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WO2024151104A1 - Climatiseur - Google Patents

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Publication number
WO2024151104A1
WO2024151104A1 PCT/KR2024/000542 KR2024000542W WO2024151104A1 WO 2024151104 A1 WO2024151104 A1 WO 2024151104A1 KR 2024000542 W KR2024000542 W KR 2024000542W WO 2024151104 A1 WO2024151104 A1 WO 2024151104A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat exchanger
refrigerant
indoor
outdoor
module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2024/000542
Other languages
English (en)
Korean (ko)
Inventor
류병진
차우호
양홍주
정청우
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Priority to EP24741725.6A priority Critical patent/EP4650678A1/fr
Publication of WO2024151104A1 publication Critical patent/WO2024151104A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
    • F24F3/1423—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant with a moving bed of solid desiccants, e.g. a rotary wheel supporting solid desiccants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • F24F12/002—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an intermediate heat-transfer fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/006—Accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F2003/1458—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification using regenerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • F24F2110/65—Concentration of specific substances or contaminants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2120/00—Control inputs relating to users or occupants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00
    • F24F2130/30—Artificial light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00—Devices or apparatus used for air treatment
    • F24F2203/02—System or Device comprising a heat pump as a subsystem, e.g. combined with humidification/dehumidification, heating, natural energy or with hybrid system
    • F24F2203/021—Compression cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/06—Several compression cycles arranged in parallel

Definitions

  • the present invention relates to air conditioners.
  • An air conditioner is a device for controlling the temperature, humidity, cleanliness, and/or airflow distribution of air, and may include an indoor unit and an outdoor unit, and a controller that controls their air conditioning.
  • air conditioners with a dehumidifying function are being used to maintain constant humidity inside a building or factory.
  • an air conditioner that performs a dehumidifying function through several stages can be used.
  • first cooling and dehumidification is performed using a refrigerant heat exchanger (or cold water heat exchanger), and second dehumidification is performed using a dehumidifying rotor, and then again using a refrigerant heat exchanger (or cold water heat exchanger).
  • a technology for tertiary cooling and dehumidification using a cold water heat exchanger (or cold water heat exchanger) has been disclosed.
  • prior art 1 has a problem in that the condensation temperature of the refrigerant varies depending on the outside temperature, lowering the operating efficiency of the cooling cycle. In other words, prior art 1 cannot actively respond to conditions that vary depending on the season (for example, temperature conditions or humidity conditions). In addition, prior art 1 has the disadvantage that if the air is supercooled during the third cooling, a heat source must be added to reheat it, and a heat source must also be added to prevent freezing of the cold water heat exchanger.
  • Republic of Korea Patent Registration No. 10-1061944 discloses an air conditioning system that can implement all cooling, heating, dehumidifying, and humidifying functions and operates differently depending on the season.
  • Prior art 2 above dehumidifies indoor air using only a desiccant rotor, it has limitations in lowering the humidity of the indoor space below a certain level and is not suitable for dehumidifying a large space.
  • Prior art 2 also has the problem of lowering operating efficiency because the condensation temperature of the refrigerant varies depending on the outside temperature.
  • high-temperature regenerative dehumidification rotors need to be regenerated by providing high temperatures.
  • a high temperature environment must be created using a regenerative heater, and thus there is a problem of increased power consumption and reduced energy efficiency.
  • the present invention is intended to solve the problems of the prior art as described above.
  • the purpose of the present invention is to increase dehumidification performance by including three or more dehumidification steps and to recycle the waste heat generated in each dehumidification step.
  • Another purpose of the present invention is to enable the air conditioner to actively respond to environmental conditions that vary depending on the season by varying the operating conditions of the air conditioner.
  • Another object of the present invention is to reduce the use of regenerative heaters by regenerating the dehumidification rotor using a regenerative heat exchanger disposed in the indoor unit.
  • Another object of the present invention is to regenerate a dehumidifying rotor in a high temperature environment using a regenerative refrigerant that operates independently of the main refrigerant.
  • Another object of the present invention is to add a heat exchange unit using regenerated refrigerant that is independent of the air conditioning unit using the main refrigerant, and to enable the heat exchange unit to utilize waste heat by exchanging heat between the main refrigerant and the regenerated refrigerant.
  • Another object of the present invention is to vary the refrigerant pressure loss of the refrigerant passing through each path by setting different paths of low-pressure pipes connected to a plurality of indoor heat exchangers.
  • Another object of the present invention is to enable heat exchange between the refrigerant in the low-pressure pipe and the refrigerant in the liquid pipe through a refrigerant heat exchanger disposed between the indoor unit and the outdoor unit.
  • the present invention may include an outdoor unit including a plurality of outdoor units that are independent from each other, and the outdoor unit.
  • the outdoor unit is connected to the plurality of outdoor units and forms an indoor duct that supplies outside air or indoor air to the indoor space, and a dehumidification rotor that dehumidifies the air inside the indoor duct may be disposed inside.
  • a transfer unit is disposed between the outdoor unit and the indoor unit to transfer the main refrigerant between the outdoor unit and the indoor unit.
  • a heat exchange unit may be disposed between the transfer unit and the indoor unit.
  • the heat exchange unit may include a module compressor that compresses regenerated refrigerant that flows independently of the main refrigerant, and a module heat exchanger in which the main refrigerant and the regenerated refrigerant are circulated, respectively.
  • the module heat exchanger can condense the main refrigerant and evaporate the regenerated refrigerant.
  • the module heat exchanger can exchange heat between the main refrigerant and the regenerated refrigerant.
  • the module heat exchanger can further increase the heat dissipation energy of the regenerative heat exchanger by exchanging heat between the regenerative refrigerant and the main refrigerant.
  • a first regenerative heat exchanger that forms a regenerative refrigerant cycle together with the heat exchange unit may be disposed in the indoor unit.
  • the first regenerative heat exchanger may condense the regenerative refrigerant compressed in the module compressor.
  • the first regenerative heat exchanger may condense the regenerated refrigerant and radiate heat to the air flowing into the dehumidifying rotor. Since the first regenerative heat exchanger can regenerate the dehumidification rotor, energy efficiency can be increased by reducing the amount of regenerative heater usage.
  • the indoor unit may include a plurality of indoor heat exchangers that exchange heat with the air inside the indoor duct and the main refrigerant.
  • a first recovery heat exchanger may be disposed at a first exhaust port through which air inside the indoor duct is discharged to the outside.
  • the first recovery heat exchanger may form a main refrigerant cycle together with one of the plurality of outdoor units and the indoor heat exchangers.
  • the first recovery heat exchanger can exchange heat between the main refrigerant and the exhaust discharged to the outside through the first exhaust port. Accordingly, dehumidification in several stages is possible using a plurality of indoor heat exchangers and the dehumidification rotor, and energy efficiency can be increased by recycling waste heat through the first recovery heat exchanger.
  • the module heat exchanger may be configured as a plate-type heat exchanger. Through a plate heat exchanger, refrigerant-to-refrigerant heat exchange between the main refrigerant and the regenerated refrigerant may be possible.
  • the outdoor unit may include a first outdoor unit, a second outdoor unit, and a third outdoor unit that are independent from each other.
  • the main refrigerant may include a first main refrigerant compressed in the first outdoor unit, a second main refrigerant compressed in the second outdoor unit, and a third main refrigerant compressed in the third outdoor unit.
  • the third main refrigerant can implement additional dehumidification/cooling functions.
  • the indoor unit may include a first indoor heat exchanger, a second indoor heat exchanger, and a first recovery heat exchanger that together with the first outdoor unit constitute a first main refrigerant cycle.
  • the indoor unit may include a second recovery heat exchanger that forms a second main refrigerant cycle together with the second outdoor unit, and a third indoor heat exchanger and a fourth heat exchanger that form a third main refrigerant cycle together with the third outdoor unit. It may include an indoor heat exchanger. Since the second recovery heat exchanger is driven by an evaporator, the refrigerant can effectively absorb heat from the air inside the indoor unit.
  • the transfer unit may be disposed between the first outdoor unit and the indoor unit and may include a first transfer module that transfers the first main refrigerant between the first outdoor unit and the indoor unit.
  • the transfer unit may be disposed between the second outdoor unit and the indoor unit and may include a second transfer module that transfers a second main refrigerant between the second outdoor unit and the indoor unit.
  • the transfer unit may be disposed between the third outdoor unit and the indoor unit and may include a third transfer module that transfers a third main refrigerant between the third outdoor unit and the indoor unit.
  • This connection structure can allow a plurality of heat exchangers to be driven as a condenser or as an evaporator.
  • the heat exchange unit may include a first heat exchange module that is disposed between the second transfer module and the indoor unit and operates a first regenerated refrigerant.
  • the heat exchange unit may further include a second heat exchange module that is disposed between the third transfer module and the indoor unit and operates a second regenerated refrigerant.
  • the first heat exchange module may include a first module compressor that compresses the first regenerated refrigerant.
  • the first heat exchange module may further include a first module expansion valve that is connected to the first regenerative heat exchanger and expands the condensed first regenerative refrigerant.
  • the first heat exchange module may include a first module heat exchanger that evaporates the first regenerated refrigerant and condenses the first main refrigerant.
  • the second heat exchange module may include a second module compressor that compresses the second regenerative refrigerant.
  • the second heat exchange module is connected to the second regenerative heat exchanger and may include a two-module expansion valve that expands the condensed second regenerative refrigerant.
  • the second heat exchange module may include a second module heat exchanger that evaporates the second regenerated refrigerant and condenses the second main refrigerant.
  • the plurality of indoor heat exchangers may include a first indoor heat exchanger and a second indoor heat exchanger connected to the first transfer module, and a third indoor heat exchanger and a fourth indoor heat exchanger connected to the third transfer module.
  • the first indoor heat exchanger and the second indoor heat exchanger may be continuously arranged along the path of the indoor duct.
  • the first indoor heat exchanger arranged in this way can remove the sensible heat load that changes the indoor temperature of the air
  • the second indoor heat exchanger can remove the latent heat load that changes the indoor humidity. It can be removed.
  • the third indoor heat exchanger and the fourth indoor heat exchanger may be continuously arranged along the path of the indoor duct, and the third indoor heat exchanger is located on the opposite side of the second indoor heat exchanger with the dehumidification rotor interposed therebetween. can be placed.
  • first recovery heat exchanger may be connected to the first transfer module, the first indoor heat exchanger, and the second indoor heat exchanger through refrigerant pipes, respectively.
  • the first transfer module may include a first refrigerant distribution valve that controls the flow of refrigerant between the first outdoor unit and the indoor unit, and a first refrigerant heat exchanger.
  • the first refrigerant heat exchanger connects the first main refrigerant flowing through the first low-pressure pipe connected between the first indoor heat exchanger and the first outdoor compressor, and the second indoor heat exchanger and the first outdoor heat exchanger. Heat can be exchanged between the first main refrigerant flowing through the first liquid pipe.
  • the first delivery module may transfer the first main refrigerant compressed by the first outdoor compressor to at least one of some of the plurality of indoor heat exchangers or the first recovery heat exchanger.
  • first indoor heat exchanger may be directly connected to the first refrigerant heat exchanger, and the second indoor heat exchanger may be connected to the first refrigerant heat exchanger through the first refrigerant distribution valve.
  • the second delivery module may transfer the second main refrigerant compressed by the second outdoor compressor to the heat exchange unit.
  • a regenerative heater that regenerates the dehumidifying rotor may be disposed between the dehumidifying rotor and the first regenerative heat exchanger.
  • the indoor unit may include the first exhaust port that exhausts air inside the indoor duct to the outside and where the first recovery heat exchanger is disposed.
  • the indoor unit is provided with a second recovery heat exchanger that is independent of the first exhaust port, discharges air inside the indoor duct to the outside, and exchanges heat between the exhaust exhaust discharged to the outside and the second main refrigerant. Additional exhaust ports may be included.
  • the dehumidification rotor may be disposed between the first regenerative heat exchanger and the second recovery heat exchanger.
  • the second transfer module may include a second refrigerant distribution valve that controls the flow of the second main refrigerant between the second outdoor unit and the first heat exchange module, and a second refrigerant heat exchanger.
  • the second refrigerant heat exchanger includes a second main refrigerant flowing through a second low-pressure pipe connected between the second recovery heat exchanger and the second outdoor compressor, and a second main refrigerant connected between the second outdoor heat exchanger and the heat exchange unit. Heat can be exchanged between the second main refrigerant flowing through the liquid pipe.
  • the third indoor heat exchanger may be disposed on the opposite side of the first indoor heat exchanger and the second indoor heat exchanger with the dehumidification rotor interposed therebetween.
  • the first outdoor unit and the first transmission module may be connected through a refrigerant pipe.
  • the refrigerant pipe is a first low pressure pipe connecting between the suction part of the first outdoor compressor and the first delivery module, and a first high pressure pipe connecting between the discharge part of the first outdoor compressor and the first delivery module. It may include a pipe and a first liquid pipe connecting the first outdoor heat exchanger and the first transfer module.
  • the first outdoor unit may include a first main outdoor valve respectively connected to the discharge part of the first outdoor compressor, the recovery part of the first accumulator, and the first outdoor heat exchanger.
  • the first outdoor unit may further include a first sub-outdoor valve connected to the first main outdoor valve and connected to the first delivery module and a recovery unit of the first accumulator, respectively.
  • first outdoor unit, the first transfer module, the first indoor heat exchanger, the second indoor heat exchanger, and the first recovery heat exchanger may constitute a first air conditioning unit.
  • the second outdoor unit, the second transfer module, the first heat exchange module, the first regenerative heat exchanger, and the second recovery heat exchanger may constitute a second air conditioning unit.
  • the third outdoor unit, the third transfer module, the third indoor heat exchanger, the fourth indoor heat exchanger, the second heat exchange module, and the second regenerative heat exchanger may constitute a third air conditioning unit.
  • first indoor heat exchanger, the second indoor heat exchanger, and the first recovery heat exchanger included in the first air conditioning unit may each be composed of a plurality of heat exchangers connected in parallel.
  • the outdoor unit, the indoor unit, the transfer unit, and the heat exchange unit are operated in a first air conditioning mode, a second air conditioning mode, or a third air conditioning mode depending on the outdoor temperature or outdoor humidity conditions, and the first air conditioning mode mode, the second air conditioning mode, or the third air conditioning mode can be controlled by the main control unit.
  • the air conditioner according to the present invention as seen above has the following effects.
  • the air conditioner of the present invention may include a first air conditioning unit to a third air conditioning unit.
  • the first air conditioning unit can cool/heat/dehumidify the air
  • the second air conditioning unit can dehumidify the air and regenerate the dehumidification rotor at the same time.
  • the third air conditioning unit can additionally cool/heat/dehumidify the air and regenerate the dehumidification rotor.
  • a plurality of air conditioning units can dehumidify the air in several stages using a cooling cycle. Therefore, there is an effect of improving the dehumidification performance of the air conditioner.
  • a plurality of indoor heat exchangers may be arranged in series in the indoor unit. If the air passing through the indoor unit passes through these indoor heat exchangers and the dehumidification rotor in that order, dehumidification in five or more stages can be achieved. Therefore, the air conditioner of the present invention can implement an ultra-low dehumidification function.
  • a recovery heat exchanger is disposed in the indoor unit of the air conditioner of the present invention, and the refrigerant in the recovery heat exchanger can radiate heat to the exhaust discharged to the outside or absorb heat from the exhaust.
  • the efficiency of the refrigeration cycle can be increased by using the waste heat of the exhaust, and as a result, the power consumption of the air conditioner can be reduced to increase energy efficiency.
  • each air conditioning unit of the present invention can be configured as an independent heat pump, and the recovery heat exchanger can be operated as a condenser or evaporator.
  • the recovery heat exchanger operates as a condenser
  • the refrigerant can dissipate heat into the exhaust, and when it operates as an evaporator, the refrigerant can absorb heat from the exhaust. Since the heat dissipation and heat absorption of this refrigerant uses indoor air (ventilation), which has better conditions than outdoor air, the air conditioner can actively respond to various seasons and environmental conditions.
  • the regenerative heat exchanger disposed in the indoor unit of the present invention can be driven by a condenser and simultaneously regenerate the dehumidification rotor through heat dissipation of the refrigerant. Accordingly, the regeneration efficiency of the dehumidification rotor can be increased, and the operation of the regeneration heater for regenerating the dehumidification rotor can be reduced. Through this, the energy efficiency of the air conditioner can be increased.
  • the heat exchange unit of the present invention can form an independent regenerative refrigerant cycle using a different type of refrigerant (regenerated refrigerant) within the air conditioning unit.
  • the regenerative heat exchanger that constitutes the regenerative refrigerant cycle radiates heat during the condensation process of the regenerated refrigerant, allowing the dehumidifying rotor to be regenerated in a high temperature environment. Therefore, a high-temperature regenerative dehumidification rotor can be applied to the indoor unit, and an indoor environment of ultra-low humidity can be established.
  • the heat exchange unit can circulate an independent regenerative refrigerant to form a cascade cycle.
  • the module heat exchanger included in the heat exchange unit can further increase the heat dissipation energy of the regenerative heat exchanger by exchanging heat between the regenerative refrigerant and the main refrigerant. Through this, the regeneration efficiency of the dehumidification rotor can be further increased.
  • the second recovery heat exchanger constituting the second air conditioning unit of the present invention may be driven by an evaporator, and the second recovery heat exchanger may be placed on the outlet side of the high temperature dehumidification rotor. Therefore, the refrigerant in the second recovery heat exchanger can be effectively evaporated by absorbing heat from the high-temperature air that is thrown to the outside after passing through the dehumidification rotor, and the waste heat can be recycled, thereby improving energy efficiency.
  • the evaporation efficiency of the second recovery heat exchanger can be greatly increased.
  • the endothermic energy used at this time can be used to drive another heat exchanger (regenerative heat exchanger). Accordingly, the energy efficiency of the second air conditioning unit can be further improved.
  • the refrigerant discharged from the plurality of indoor heat exchangers provided in the indoor unit of the present invention may be delivered to the first outdoor unit through the first transfer module.
  • the low-pressure pipes connected to each of the plurality of indoor heat exchangers have different movement paths, so the refrigerant pressure loss of the refrigerant discharged from the indoor heat exchangers may be different.
  • the control unit has the effect of controlling the cooling/dehumidification function of the air conditioner more precisely by using the temperature difference due to the difference in refrigerant pressure loss.
  • first transfer module, second transfer module, and third transfer module disposed between the indoor unit and the outdoor unit of the present invention may each be provided with a refrigerant heat exchanger.
  • the refrigerant in the low-pressure pipe and the refrigerant in the liquid pipe passing through the refrigerant heat exchanger can exchange heat with each other. Therefore, if the refrigerant passing through the liquid pipe is (i) in a liquid state, it can be additionally supercooled and stabilized, and (ii) if it is in a two-phase state, it can be liquefied.
  • the operational reliability of the air conditioner can be improved through cooling of this refrigerant.
  • FIG. 1 is a structural diagram showing the schematic configuration of an example of an air conditioner of the present invention.
  • Figure 2 is a block diagram showing the configuration of a control unit and structures controlled by the control unit according to an embodiment of the present invention.
  • Figure 3 is a flow chart sequentially showing the process in which the air conditioner is controlled for each mode by the control unit constituting an embodiment of the present invention.
  • Figure 4 is a structural diagram showing the refrigerant flow in one embodiment of the present invention in the first air conditioning mode.
  • Figure 5 is a flow chart showing the refrigerant flow and air flow of the first air conditioning unit constituting an embodiment of the present invention in the first air conditioning mode.
  • Figure 6 is a flow chart showing the refrigerant flow and air flow of the second air conditioning unit constituting an embodiment of the present invention in the first air conditioning mode.
  • Figure 7 is a flow chart showing the refrigerant flow and air flow of the third air conditioning unit constituting an embodiment of the present invention in the first air conditioning mode.
  • Figure 8 is a structural diagram showing the refrigerant flow in one embodiment of the present invention in the second air conditioning mode.
  • Figure 9 is a flow chart showing the refrigerant flow and air flow of the first air conditioning unit constituting an embodiment of the present invention in the second air conditioning mode.
  • Figure 10 is a flow chart showing the refrigerant flow and air flow of the second air conditioning unit constituting an embodiment of the present invention in the second air conditioning mode.
  • Figure 11 is a flow chart showing the refrigerant flow and air flow of the third air conditioning unit constituting an embodiment of the present invention in the second air conditioning mode.
  • Figure 12 is a structural diagram showing the refrigerant flow in one embodiment of the present invention in the third air conditioning mode.
  • Figure 13 is a flowchart showing the refrigerant flow and air flow of the first air conditioning unit constituting an embodiment of the present invention in the third air conditioning mode.
  • Figure 14 is a flow chart showing the refrigerant flow and air flow of the second air conditioning unit constituting an embodiment of the present invention in the third air conditioning mode.
  • Figure 15 is a flow chart showing the refrigerant flow and air flow of the third air conditioning unit constituting an embodiment of the present invention in the third air conditioning mode.
  • Figure 16 is a structural diagram showing the schematic configuration of a second embodiment of the air conditioner of the present invention.
  • Figure 17 is a structural diagram showing the schematic configuration of a third embodiment of the air conditioner of the present invention.
  • FIG. 18 is a structural diagram showing a first embodiment of the first recovery heat exchanger applied to the third embodiment of FIG. 17.
  • FIG. 19 is a structural diagram showing a second embodiment of the first recovery heat exchanger applied to the third embodiment of FIG. 17.
  • Figure 20 is a structural diagram showing a third embodiment of the first recovery heat exchanger applied to the third embodiment of Figure 17.
  • the present invention relates to an air conditioner, particularly an air conditioner capable of dehumidifying an indoor space.
  • the air conditioner can suck in air and discharge it, and control the temperature and humidity of the air in the process.
  • the flow of air into and out of the air conditioner can be divided as follows. First, the air controlled inside the air conditioner is discharged to the outside of the air conditioner by (i) air supplied to the indoor space (hereinafter referred to as “supply air”, SA) and air discharged to the outdoors (hereinafter referred to as “exhaust air”, EA).
  • the outside air that is sucked into the air conditioner is (i) air flowing into the inside of the air conditioner from the outside (hereinafter referred to as "outside air”, OA), and air flowing into the inside of the air conditioner from indoors. It can be divided into air (hereinafter “ventilation”, RA).
  • the waste heat of the exhaust (EA) can be recycled. More specifically, heat from the refrigerant of the indoor heat exchanger may be dissipated toward the exhaust EA, or heat may be absorbed from the exhaust EA toward the refrigerant of the indoor heat exchanger.
  • the energy of the air conditioner can be saved by dissipating or absorbing heat from the main refrigerant by using the exhaust air (EA) discarded after controlling the temperature/humidity of the indoor space.
  • “recovery” means energy recovery.
  • the air conditioner may configure a refrigerant cycle in which the main refrigerant (first refrigerant) and the regenerated refrigerant (second refrigerant) are independent.
  • the main refrigerant and the regenerative refrigerant may exchange heat with each other.
  • waste heat generated in the main refrigerant cycle by the main refrigerant may be absorbed by the regenerative refrigerant toward the regenerative refrigerant cycle.
  • the regenerative refrigerant cycle can save energy in the air conditioner by using waste heat to regenerate the dehumidifying rotor 460 in a higher temperature environment.
  • “regeneration” refers to regeneration of the dehumidification rotor 460.
  • the air conditioner of this embodiment may largely include a first air conditioning unit (U1), a second air conditioning unit (U2), and a third air conditioning unit (U3).
  • the first air conditioning unit (U1), the second air conditioning unit (U2), and the third air conditioning unit (U3) may have independent refrigerant cycles.
  • the first air conditioning unit (U1), the second air conditioning unit (U2), and the third air conditioning unit (U3) may share an indoor duct (S) that supplies outside air or indoor air to the indoor space.
  • Independent main refrigerant may flow in the first air conditioning unit (U1), the second air conditioning unit (U2), and the third air conditioning unit (U3).
  • the refrigerant of the first air conditioning unit (U1) is the first main refrigerant
  • the refrigerant of the second air conditioning unit (U2) is the second main refrigerant
  • the refrigerant of the third air conditioning unit (U3) is the third main refrigerant. It will be referred to as the main refrigerant.
  • a refrigerant different from the main refrigerant may flow in the heat exchange units 700 and 900 independent of the air conditioning units.
  • Regenerated refrigerant may flow in the heat exchange units 700 and 900.
  • the first regenerated refrigerant flows in the first heat exchange module 700 constituting the heat exchange units 700 and 900, and the second refrigerant flows in the second heat exchange module 900.
  • Regenerated refrigerant can flow.
  • the first air conditioning unit (U1) can cool/heat/dehumidify air and recycle waste heat of exhausted (EA) air.
  • the second air conditioning unit (U2) can recycle waste heat of exhausted (EA) air and regenerate the dehumidification rotor (460).
  • the third air conditioning unit (U3) can cool/dehumidify the air and regenerate the dehumidifying rotor (460).
  • the first air conditioning unit (U1) may include a first outdoor unit (100) and a portion of an indoor unit (400).
  • the second air conditioning unit (U2) may include another part of the second outdoor unit 200 and the indoor unit 400.
  • the third air conditioning unit (U3) may include the remaining part of the third outdoor unit 300 and the indoor unit 400.
  • the first air conditioning unit (U1) may include a first transmission module 500
  • the second air conditioning unit (U2) may include a second transmission module 600
  • the third air conditioning unit (U3) may include ) may include a third transmission module 800.
  • the first transfer module 500 can transfer the first main refrigerant between the first outdoor unit 100 and the indoor unit 400
  • the second transfer module 600 can transfer the first main refrigerant between the second outdoor unit 200 and the indoor unit 400.
  • the second main refrigerant can be transferred between the indoor units 400
  • the third transfer module 800 can transfer the third main refrigerant between the third outdoor unit 300 and the indoor unit 400.
  • the control unit 1000 controls the first outdoor unit 100, the second outdoor unit 200, the third outdoor unit 300, the indoor unit 400, the first transmission module 500, and the third outdoor unit 300.
  • the second transfer module 600, the third transfer module 800, the first heat exchange module 700, and the second heat exchange module 900 can be controlled.
  • the control unit 1000 is configured to control the first outdoor unit 100, the second outdoor unit 200, the third outdoor unit 300, the indoor unit 400, the first transmission module 500, and the second transmission module ( 600), the third transfer module 800, the first heat exchange module 700, and the second heat exchange module 900 are controlled to control both the flow direction and flow amount of the refrigerant.
  • a plurality of heat exchangers included in the first air conditioning unit (U1), the second air conditioning unit (U2), and the third air conditioning unit (U3) operate as a condenser or as an evaporator. It can work. This control may be implemented differently depending on the first to third air conditioning modes, which will be described below.
  • the heat exchangers include the first and second outdoor heat exchangers (130,230), the first and fourth indoor heat exchangers (421,422,430,435), the first and second recovery heat exchangers (410,440), and the first and second regenerative heat exchangers (450,470).
  • 1 and 2 module heat exchangers (730, 930) may be included.
  • the first transfer module 500, the second transfer module 600, and the third transfer module 800 include a first refrigerant heat exchanger 530, a second refrigerant heat exchanger 630, and a third refrigerant heat exchanger, respectively. (830) may be included.
  • the first refrigerant heat exchanger 530, the second refrigerant heat exchanger 630, and the third refrigerant heat exchanger 830 do not operate as condensers or evaporators, and the first refrigerant heat exchanger 530 and the second refrigerant heat exchanger 830 do not operate as condensers or evaporators. It helps heat exchange between refrigerants flowing inside the refrigerant heat exchanger (630).
  • the medium temperature/high pressure first main refrigerant condensed by the first indoor heat exchanger 421 in the first air conditioning mode is transferred to the first refrigerant heat exchanger 530 of the first transfer module 500.
  • the low-temperature/low-pressure first main refrigerant evaporated from the first and second indoor heat exchangers (421, 425) is flowing through the first refrigerant heat exchanger (530). Therefore, the medium-temperature/high-pressure first main refrigerant previously condensed by the first indoor heat exchanger 421 radiates heat (heat exchange) to the low-temperature/low-pressure first main refrigerant when passing through the first refrigerant heat exchanger 530. After being converted into liquid refrigerant, it can flow into the first and second indoor heat exchangers (421, 425).
  • the refrigerant pipe may consist of a total of three.
  • the three refrigerant pipes can be divided into low-pressure pipes, high-pressure pipes, and liquid pipes.
  • the low-pressure pipe, the high-pressure pipe, and the liquid pipe may each have a plurality of organs connected to each other to form one continuous low-pressure pipe, one high-pressure pipe, and one liquid pipe.
  • the low-pressure pipe can be seen as referring to institutions through which low-pressure refrigerant flows
  • the high-pressure pipe can be seen as referring to institutions through which high-pressure refrigerant flows.
  • the low-pressure pipe and the high-pressure pipe may be configured differently depending on the operation mode of the air conditioner.
  • the engine used as a high pressure pipe may be used as a low pressure pipe when operated in the second air conditioning mode.
  • This three-pipe structure can allow the flow direction of the refrigerant to vary. The specific structure of the refrigerant pipe will be described again below.
  • first outdoor unit 100, the second outdoor unit 200, and the third outdoor unit 300 may form one outdoor unit (100, 200, and 300).
  • the outdoor units 100, 200, and 300 may be placed outside the building.
  • the indoor unit 400 may be viewed as a corresponding indoor unit 400.
  • the indoor unit 400 may be placed inside a building.
  • the first transfer module, second transfer module, third transfer module 800, first heat exchange module 700, and second heat exchange module 900 may be placed inside or outside the building.
  • the inside of the first outdoor unit 100 includes a first outdoor compressor 110, a first outdoor heat exchanger 130, and a first outdoor expansion valve 135. , a first main outdoor valve 150, a first sub-outdoor valve 160, and a first accumulator 120 may be included. Additionally, the interior of the first outdoor unit 100 may include a plurality of refrigerant pipes through which the first main refrigerant flows.
  • the first outdoor compressor 110 and the first main outdoor valve 150 may be connected by a first compressor discharge pipe (L101).
  • the first compressor discharge pipe (L101) may basically form a part of the first high pressure pipe.
  • the first outdoor heat exchanger 130 and the first main outdoor valve 150 may be connected through a 1-1 outdoor heat exchange connector (L102).
  • the first outdoor unit 100 may include a first main outdoor valve 150 and a first sub-outdoor valve 160.
  • the first main outdoor valve 150 and the first sub-outdoor valve 160 are connected to each other, and the flow direction of the first main refrigerant can be controlled.
  • the first main outdoor valve 150 and the first sub outdoor valve 160 are each configured as a four-way valve.
  • the first main outdoor valve 150 can selectively connect the first compressor discharge pipe (L101) and the 1-1 outdoor heat exchange connection pipe (L102).
  • first main outdoor valve (150) When the first compressor discharge pipe (L101) and the 1-1 outdoor heat exchange connection pipe (L102) are connected to each other by the first main outdoor valve (150), the first outdoor compressor (110) A portion of the discharged high-temperature/high-pressure first main refrigerant may be transferred to the first outdoor heat exchanger 130 (first air conditioning mode and third air conditioning mode)
  • the first main outdoor valve ( 150) when the first compressor discharge pipe (L101) and the 1-1 outdoor heat exchange connection pipe (L102) are blocked from each other, the high temperature/high pressure first main refrigerant discharged from the first outdoor compressor (110) All of the can be transmitted to the second indoor heat exchanger 425, which will be described later, through the first sub-outdoor valve 160. (second air conditioning mode)
  • the first sub-outdoor valve 160 may deliver low-temperature/low-pressure refrigerant delivered from the outside of the first outdoor unit 100 to the first accumulator 120.
  • the first sub-outdoor valve 160 may be connected to the first outdoor compressor 110 through the first compressor discharge pipe (L101), and the first transmission may be transmitted through the 1-1 outdoor unit connection pipe (L103). It can be connected to the module 500. Accordingly, the first sub-outdoor valve 160 can transfer all or part of the high-temperature/high-pressure first main refrigerant discharged from the first outdoor compressor 110 to the first delivery module 500.
  • the first outdoor heat exchanger 130 may operate as a condenser or evaporator.
  • the first outdoor heat exchanger 130 when the air conditioner operates in the first air conditioning mode and the third air conditioning mode, the first outdoor heat exchanger 130 may be a condenser, and when the air conditioner is operated in the second air conditioning mode, the first outdoor heat exchanger 130 may be a condenser. (130) can be an evaporator.
  • the first outdoor expansion valve 135 may be connected to the first outdoor heat exchanger 130 through the 1-2 outdoor heat exchange connector L121. Additionally, the first outdoor expansion valve 135 may be connected to the first transmission module 500 through a first-second outdoor unit connection pipe L122.
  • the second outdoor unit 200 may have a structure similar to the first outdoor unit 100. That is, the second outdoor unit 200 includes a second outdoor compressor 210, a second outdoor heat exchanger 230, a second outdoor expansion valve 235, a second main outdoor valve 250, and a second sub-outdoor valve ( 260) and a second accumulator 220 may be included. Also, the interior of the second outdoor unit 200 may include a plurality of refrigerant pipes through which the second main refrigerant flows.
  • the second outdoor compressor 210 and the second main outdoor valve 250 may be connected by the second compressor discharge pipe L201.
  • the second compressor discharge pipe (L201) may basically form a part of the second high pressure pipe.
  • the second outdoor heat exchanger 230 and the second main outdoor valve 250 may be connected through a 2-1 outdoor heat exchange connector (L202).
  • the second outdoor unit 200 may include a second main outdoor valve 250 and a second sub-outdoor valve 260.
  • the second main outdoor valve 250 and the second sub-outdoor valve 260 are connected to each other, and the flow direction of the second main refrigerant can be controlled.
  • the second main outdoor valve 250 and the second sub outdoor valve 260 are each configured as a four-way valve.
  • the second main outdoor valve 250 can selectively connect the second compressor discharge pipe (L201) and the 2-1 outdoor heat exchange connection pipe (L202). (i) When the second compressor discharge pipe (L201) and the 2-1 outdoor heat exchange connector (L202) are connected to each other by the second main outdoor valve (250), the second outdoor compressor (210) A portion of the discharged high-temperature/high-pressure refrigerant may be transferred to the second outdoor heat exchanger 230.
  • first air conditioning mode If the second main outdoor valve 250 is used, the second compressor When the discharge pipe (L201) and the 2-1 outdoor heat exchange connection pipe (L202) are blocked from each other, all of the high-temperature/high-pressure refrigerant discharged from the second outdoor compressor (210) is transferred to the second sub-outdoor valve (260). ) can be transmitted to the first heat exchange module 700, which will be described later (second air conditioning mode and third air conditioning mode).
  • the second sub-outdoor valve 260 may transmit the low-temperature/low-pressure second main refrigerant delivered from the outside of the second outdoor unit 200 to the second accumulator 220.
  • the second sub-outdoor valve 260 may be connected to the second outdoor compressor 210 through the second compressor discharge pipe (L201), and the second transmission may be transmitted through the 2-1 outdoor unit connection pipe (L203). It can be connected to the module 600. Accordingly, the second sub-outdoor valve 260 can transfer all or part of the high-temperature/high-pressure second main refrigerant discharged from the second outdoor compressor 210 to the second delivery module 600.
  • the second outdoor heat exchanger 230 may operate as a condenser or evaporator.
  • the second outdoor heat exchanger 230 when the air conditioner operates in the first air conditioning mode, the second outdoor heat exchanger 230 may be a condenser, and when the air conditioner operates in the second or third air conditioning mode, the second outdoor heat exchanger 230 may be a condenser. (230) can be an evaporator.
  • the second outdoor expansion valve 235 may be connected to the second outdoor heat exchanger 230 through the 2-2 outdoor heat exchange connector L221.
  • the second outdoor expansion valve 235 may be connected to the second transmission module 600 through a 2-2 outdoor unit connection pipe (L222).
  • the third outdoor unit 300 may have a similar structure to the first outdoor unit 100 and the second outdoor unit 200. That is, the third outdoor unit 300 includes a third outdoor compressor 310, a third outdoor heat exchanger 330, a third outdoor expansion valve 335, a third main outdoor valve 350, and a third sub-outdoor valve ( 360) and a third accumulator 420 may be included. Additionally, the third outdoor unit 300 may include a plurality of refrigerant pipes through which the third main refrigerant flows.
  • the third outdoor compressor 310 and the third main outdoor valve 350 may be connected by a third compressor discharge pipe (L301).
  • the third compressor discharge pipe (L301) may basically form a part of the third high pressure pipe.
  • the third outdoor heat exchanger 330 and the third main outdoor valve 350 may be connected through a 3-1 outdoor heat exchange connector (L302).
  • the third outdoor unit 300 may include a third main outdoor valve 350 and a third sub outdoor valve 360.
  • the third main outdoor valve 350 and the third sub-outdoor valve 360 are connected to each other, and the flow direction of the third main refrigerant can be controlled.
  • the third main outdoor valve 350 and the third sub outdoor valve 360 are each configured as a four-way valve.
  • the third main outdoor valve 350 can selectively connect the third compressor discharge pipe (L301) and the 3-1 outdoor heat exchange connection pipe (L302).
  • the third outdoor compressor (310) A portion of the discharged high-temperature/high-pressure third main refrigerant may be transferred to the third outdoor heat exchanger 330 (first air conditioning mode and third air conditioning mode)
  • the third main outdoor valve When the third compressor discharge pipe (L301) and the 3-1 outdoor heat exchange connection pipe (L302) are blocked from each other by 350), the high temperature/high pressure third main refrigerant discharged from the third outdoor compressor (310) All of the can be transmitted to the second heat exchange module 900, which will be described later, through the third sub-outdoor valve 360. (second air conditioning mode)
  • the third sub-outdoor valve 360 may deliver the low-temperature/low-pressure third main refrigerant delivered from the outside of the third outdoor unit 300 to the third accumulator 420.
  • the third sub-outdoor valve 360 may be connected to the third outdoor compressor 310 through a third compressor discharge pipe (L301), and may be transmitted to the third outdoor compressor through a 3-1 outdoor unit connection pipe (L303). It can be connected to the module 800. Accordingly, the third sub-outdoor valve 360 can transfer all or part of the high-temperature/high-pressure third main refrigerant discharged from the third outdoor compressor 310 to the third delivery module 800.
  • the third outdoor heat exchanger 330 may operate as a condenser or evaporator.
  • the third outdoor heat exchanger 330 when the air conditioner operates in the first air conditioning mode and the third air conditioning mode, the third outdoor heat exchanger 330 may be a condenser, and when the air conditioner is operated in the second air conditioning mode, the third outdoor heat exchanger 330 may be a condenser. (330) may be an evaporator.
  • the third outdoor expansion valve 335 may be connected to the third outdoor heat exchanger 330 through the 3-2 outdoor heat exchange connector L321.
  • the third outdoor expansion valve 335 may be connected to the third transmission module 800 through a 3-2 outdoor unit connection pipe (L322).
  • the indoor unit 400 may form an indoor duct (S). Outside air (OA) or ventilation (RA) may be introduced into the indoor duct (S), and the air inside the indoor duct (S) may be discharged as supply air (SA) or exhaust air (EA).
  • SA supply air
  • EA exhaust air
  • the indoor duct S can be said to be a type of air passage formed by the indoor unit 400.
  • a plurality of air intakes and air outlets may be disposed in the indoor duct (S).
  • a first outdoor device (G1) and a second outdoor device (G2) through which outdoor air (OA), which is external air, flows into the indoor duct (S) are arranged independently of each other.
  • Outdoor air (OA) may flow into the indoor duct (S) through the first external device (G1) and the second external device (G2), respectively.
  • the indoor duct (S) may be provided with a supply opening (G3) through which air controlled within the indoor duct (S) is supplied to the indoor space. Dehumidified, heated, or cooled air can be supplied to the indoor space through the air supply opening G3.
  • the air supply port (G3) may face a direction opposite to the first external device (G1).
  • the indoor duct (S) may be provided with a ventilation port (G4) through which air (ventilation (RA)) from the indoor space flows back into the indoor duct (S). Ventilation (RA) flows into the indoor duct (S) through the ventilation hole (G4) and can be controlled again.
  • ventilation port (G4) through which air (ventilation (RA)) from the indoor space flows back into the indoor duct (S). Ventilation (RA) flows into the indoor duct (S) through the ventilation hole (G4) and can be controlled again.
  • One or more exhaust ports may be disposed in the indoor duct (S).
  • the exhaust port is for discharging air (exhaust air (EA)) that is discarded from the inside of the indoor duct (S) to the external space.
  • the exhaust port includes a first exhaust port (G5) and a second exhaust port (G6).
  • the exhaust port may consist of one exhaust port, or it may consist of three or more exhaust ports.
  • a first recovery heat exchanger 410 and a second recovery heat exchanger 440 may be disposed adjacent to the first exhaust port G5 and the second exhaust port G6, respectively.
  • the refrigerant of the first recovery heat exchanger 410 and the second recovery heat exchanger 440 radiates heat to the outside air (OA) discharged through the first exhaust port (G5) and the second exhaust port (G6), respectively, or It can absorb heat from outside air (OA).
  • the outdoor air (OA) has a lower temperature (summer season) or a higher temperature (winter season or inter-seasonal season) than the air in the outside space.
  • heat dissipation efficiency can be increased if the refrigerant radiates heat to the outside air (OA) with a temperature lower than the outside air temperature
  • the heat absorption efficiency can be increased. It can get higher.
  • the cooling cycle of the air conditioner is performed through the first recovery heat exchanger 410 and the second recovery heat exchanger 440 located adjacent to the first exhaust port (G5) and the second exhaust port (G6). This can increase efficiency.
  • Recovery of the first recovery heat exchanger 410 and the second recovery heat exchanger 440 may mean energy recovery.
  • a plurality of air conditioning fans may be disposed in the indoor duct (S).
  • the air conditioning fan is used to smooth airflow inside the indoor duct (S).
  • the air conditioning fan includes a first air conditioning fan (F1), a second air conditioning fan (F2), and a third air conditioning fan (F3).
  • the first air conditioning fan (F1) is disposed inside the ventilation hole (G4).
  • the second air conditioning fan (F2) is disposed inside the air supply opening (G3).
  • the third air conditioning fan (F3) is disposed inside the second exhaust port (G6).
  • a first indoor heat exchanger 421, a second indoor heat exchanger 425, a third indoor heat exchanger 430, a fourth indoor heat exchanger 435, and a first recovery heat exchanger ( 410), a second recovery heat exchanger 440, a first regenerative heat exchanger 450, a second regenerative heat exchanger 470, a dehumidifying rotor 460, a regenerative heater 465, etc. may be disposed.
  • the internal components of the indoor unit 400 can control outdoor air (OA) or ventilation (RA) together with the first outdoor unit 100 and the second outdoor unit 200. Control here may include heating, cooling, or dehumidifying the air.
  • the first recovery heat exchanger 410 may be operated as a condenser (first and third air conditioning modes) or an evaporator (second air conditioning mode).
  • first and third air conditioning modes first and third air conditioning modes
  • second air conditioning mode second air conditioning mode
  • the refrigerant in the first recovery heat exchanger 410 may dissipate heat into the exhaust EA discharged from the indoor unit 400 to the outside G5.
  • the exhaust air (EA) has a lower temperature than the external air
  • the amount of heat dissipation of the refrigerant may increase. Accordingly, the operating high pressure of the refrigeration cycle by the first air conditioning unit (U1) is lowered, thereby reducing power consumption.
  • the refrigerant of the first recovery heat exchanger 410 can absorb heat from the exhaust EA discharged from the indoor unit 400 to the outside G5. there is. At this time, since the temperature of the exhaust EA is higher than that of the external air, the amount of heat absorption may increase. Accordingly, the low operating pressure of the refrigeration cycle by the first air conditioning unit (U1) increases, thereby reducing power consumption.
  • the first recovery heat exchanger 410 utilizes exhaust (EA) when operating as a condenser or as an evaporator, thus consuming the power required to operate the refrigeration cycle of the first air conditioning unit (U1). It can function to reduce .
  • EA exhaust
  • the first recovery heat exchanger 410 may be placed adjacent to the first exhaust port G5 through which the exhaust gas EA is discharged.
  • the first recovery heat exchanger 410 may be disposed inside the indoor duct (S) such that the surface of the first recovery heat exchanger 410 faces the first exhaust port (G5).
  • the exhaust EA that has passed through the first recovery heat exchanger 410 may be discharged to the external space through the first exhaust port G5.
  • a first bypass (B1) may be disposed in the indoor duct (S).
  • the first bypass (B1) may be disposed on the side of the first air conditioning unit (U1).
  • the first bypass (B1) can be viewed as part of a path formed inside the indoor duct (S).
  • the first bypass B1 may include a blowing fan for air flow.
  • the first bypass (B1) is (i) ventilation (RA) introduced through the ventilation port (G4) becomes exhaust (EA) through the first recovery heat exchanger (410) and flows to the first exhaust port (G5).
  • the moving path and (ii) the path of the outside air (OA) introduced through the first outside device (G1) toward the first indoor heat exchanger (421) and the second indoor heat exchanger (425) are connected to each other. You can. Accordingly, part of the ventilation (RA) flowing into the ventilation opening (G4) becomes exhaust (EA) discharged to the outside through the first recovery heat exchanger (410), and the remaining part becomes the first bypass (B1). You can move through.
  • the air moving through the first bypass (B1) is mixed with the outside air (OA) introduced through the first outside device (G1) to form the first indoor heat exchanger (421) and the second indoor heat exchanger (425). ) can flow.
  • all of the ventilation (RA) becomes exhaust (EA) and is not discharged to the first exhaust port (G5), and part of it can be reused through the first bypass (B1).
  • the temperature of ventilation (RA) introduced from an indoor space is lower than the temperature of outdoor air (OA) supplied from outside. Accordingly, the air moving through the first bypass (B1) mixes with the outside air (OA), thereby lowering the temperature of the air and increasing the driving efficiency of the first air conditioning unit (U1).
  • the first indoor heat exchanger 421 and the second indoor heat exchanger 425 may be disposed on the opposite side of the first recovery heat exchanger 410.
  • the first indoor heat exchanger 421 and the second indoor heat exchanger 425 may form one primary indoor heat exchanger 420.
  • the primary indoor heat exchanger 420 can cool, heat, or dehumidify outside air (OA) or ventilation (RA).
  • OA outside air
  • RA ventilation
  • the first indoor heat exchanger 420 is composed of a first indoor heat exchanger 421 and a second indoor heat exchanger 425, but the first indoor heat exchanger 421 and the second indoor heat exchanger ( 425), any one of them may be omitted.
  • the first indoor heat exchanger 420 is composed of two heat exchangers (the first indoor heat exchanger 421 and the second indoor heat exchanger 425), so various heat exchangers depending on load conditions or environmental conditions. Control may be possible. For example, (i) cooling/dehumidification performance can be increased by driving both the first indoor heat exchanger 421 and the second indoor heat exchanger 425 (high load environment, first air conditioning mode, or third air conditioning mode) mode), (ii) cooling/dehumidifying performance may be implemented by operating only one of the first indoor heat exchanger 421 and the second indoor heat exchanger 425 (heavy load environment), (iii) the first indoor heat exchanger 425
  • the heat exchanger 421 may be driven as an evaporator and the second indoor heat exchanger 425 may be driven as a condenser to implement dehumidification and heating functions (low load environment, second air conditioning mode). In this way, by controlling the primary indoor heat exchanger 420 differently depending on load conditions or environmental conditions, the power consumption required to drive
  • the first indoor heat exchanger 421 and the second indoor heat exchanger 425 may be arranged in series side by side along the air flow direction inside the indoor duct (S). In this way, the first indoor heat exchanger 421 and the second indoor heat exchanger 425 can continuously control air.
  • the first indoor heat exchanger 421 and the second indoor heat exchanger 425 each operate as an evaporator (first air conditioning mode and third air conditioning mode)
  • the first indoor heat exchanger 421 The air that is first cooled/dehumidified as it passes through can be cooled/dehumidified secondarily as it passes through the second indoor heat exchanger (425).
  • the first indoor heat exchanger 421 can remove the sensible heat load that changes the indoor temperature of the air
  • the second indoor heat exchanger 425 can remove the latent heat load that changes the indoor humidity. Latent heat load can be removed.
  • the first indoor heat exchanger 421 operates as an evaporator and the second indoor heat exchanger 425 operates as a condenser (second air conditioning mode)
  • the first indoor heat exchanger 421 operates as an evaporator and the second indoor heat exchanger 425 operates as a condenser (second air conditioning mode)
  • the initially cooled/dehumidified air may be heated while passing through the second indoor heat exchanger 425, thereby increasing its temperature.
  • the first indoor heat exchanger 421 may be connected to the first recovery heat exchanger 410 through the first indoor unit connection pipe (L128) and the 1-1 indoor heat exchange connection pipe (L124). Additionally, a first indoor expansion valve 423 may be disposed on the 1-1 indoor heat exchange connection pipe (L124). The first indoor unit connection pipe (L128) and the 1-1 indoor heat exchange connection pipe (L124) may form a liquid pipe. The first indoor heat exchanger 421 may be connected to the first refrigerant heat exchanger 530 of the first transfer module 500 through a first heat exchange guide pipe (L117). The first heat exchange guide pipe (L117) may be a first low pressure pipe.
  • the first indoor heat exchanger 421 operates as an evaporator (first air conditioning mode, second air conditioning mode, and third air conditioning mode)
  • the first main refrigerant condensed in the first recovery heat exchanger 410 is 1
  • the first indoor expansion valve 423 After being transferred to the first indoor expansion valve 423 through the indoor unit connection pipe (L128) and expanded, it is transferred to the first indoor heat exchanger 421 and evaporated, and the evaporated first main refrigerant is used in the first heat exchanger. It can be delivered to the first refrigerant heat exchanger (530) through the induction pipe (L117).
  • the second indoor heat exchanger (425) is connected to the first recovery heat exchanger (410) through the first indoor unit connection pipe (L128), the first indoor branch pipe (L125), and the 1-2 indoor heat exchange connection pipe (L126). can be connected with Additionally, a second indoor expansion valve 427 may be disposed on the first-second indoor heat exchange connection pipe L126.
  • the second indoor heat exchanger 425 is connected to the first refrigerant heat exchanger 530 of the first transfer module 500 through the first-2 heat exchange connector L123, and is connected to the first outdoor heat exchanger 530 of the first transfer module 500. It may also be connected to the heat exchanger 130.
  • the second indoor heat exchanger 425 may be connected to the first refrigerant distribution valve 510 of the first transfer module 500 through a first-2 distribution connector L119.
  • the first main refrigerant condensed in the first recovery heat exchanger 410 flows into the first indoor unit connection pipe ( L128) and the first indoor branch pipe (L125) are transferred to the second indoor expansion valve 427 and expanded, then transferred to the second indoor heat exchanger 425 and evaporated.
  • the evaporated first main refrigerant is It can be delivered to the first refrigerant distribution valve 510 through the 1-2 distribution connection pipe (L119).
  • the first main refrigerant condensed in the first outdoor heat exchanger 130 may also be transferred to the second indoor heat exchanger 425 through the first-2 heat exchange connection pipe (L123) and evaporated.
  • the 1-2 heat exchange connector (L123), the first indoor unit connector (L128), and the first indoor branch pipe (L125) may constitute a first liquid pipe, and the 1-2 distribution connector (L119) can be the first low pressure pipe.
  • the high-temperature/high-pressure first main refrigerant delivered to the first outdoor compressor 110 is supplied to the first delivery module ( 500) and may be transmitted to the second indoor heat exchanger 425 through the first-second distribution connector (L119).
  • (i) part is 1-2 indoor heat exchange connection pipe (L126) - 1st indoor branch pipe (L125) - 1-1 indoor heat exchange connection pipe (L124) ) can be transferred to the first indoor heat exchanger (421) and evaporated
  • (ii) another part is 1-2 indoor heat exchange connection pipe (L126) - 1st indoor branch pipe (L125) - 1 It can be delivered to the first recovery heat exchanger (410) through the indoor unit connector (L128) and evaporated
  • (iii) the remainder is 1-2 indoor heat exchange connector (L126) - 1-2 heat exchange connector ( L123) - first refrigerant distribution valve (510) - 1-2 outdoor unit connection pipe (L122) - 1-2 outdoor heat exchange connection pipe (L121) to be delivered to the first outdoor heat exchanger (130) and evaporated.
  • the distribution valve 510, the 1st-2nd outdoor unit connection pipe (L122), and the 1st-2nd outdoor heat exchange connection pipe (L121) may each form a first liquid pipe.
  • the first indoor heat exchanger 421 is directly connected to the first refrigerant heat exchanger 530 of the first transfer module 500, but the second indoor heat exchanger 425 is connected to the first refrigerant heat exchanger 530 of the first transfer module 500. After passing through the first refrigerant distribution valve 510 of the module 500, it joins the first refrigerant heat exchanger 530.
  • the refrigerant pressure drop through the first indoor heat exchanger (421) may be smaller than the refrigerant pressure drop through the second indoor heat exchanger (425).
  • the control unit 1000 can more precisely control the cooling/dehumidifying function of the air conditioner using this temperature difference.
  • the first indoor heat exchanger 421 and the second indoor heat exchanger 425 which are the primary indoor heat exchanger 420, include the first outdoor unit 100, the first transfer module 500, and the first recovery unit.
  • the first air conditioning unit (U1) can be formed together with the heat exchanger 410. Additionally, the plurality of indoor heat exchangers 420, 430, and 435 and the first recovery heat exchanger 410 disposed at the first exhaust port G5 of the indoor duct S may be viewed as one first heat exchange unit.
  • a second recovery heat exchanger 440 may be disposed in the indoor unit 400.
  • the second recovery heat exchanger 440 may be disposed in the indoor unit 400 and operate as an evaporator (first air conditioning mode, second air conditioning mode, and third air conditioning mode).
  • the second main refrigerant of the second recovery heat exchanger 440 can absorb heat from the exhaust EA discharged to the outside from the indoor unit 400.
  • the amount of heat absorption may increase. Accordingly, the low operating pressure of the refrigeration cycle by the second air conditioning unit (U2) increases, thereby reducing power consumption.
  • the second recovery heat exchanger (440) utilizes the temperature of the exhaust (EA) when operating as an evaporator, thereby reducing the power consumption required to operate the refrigeration cycle of the second air conditioning unit (U2). can do.
  • the second recovery heat exchanger 440 may be placed adjacent to the second exhaust port G6 through which the exhaust gas EA is discharged.
  • the second recovery heat exchanger 440 may be disposed inside the indoor duct (S) such that the surface of the second recovery heat exchanger (440) faces the second exhaust port (G6). Referring to FIG. 1, the exhaust EA that has passed through the second recovery heat exchanger 440 may be discharged to the external space through the second exhaust port G6.
  • a first regenerative heat exchanger 450 may be placed in the indoor duct (S).
  • the first regenerative heat exchanger 450 may operate as a condenser.
  • the first regenerative heat exchanger 450, together with the first heat exchange module 700, may form a first regenerative refrigerant cycle that flows the first regenerative refrigerant. That is, the first heat exchange module 700 and the first regenerative heat exchanger 450 operate an independent first regenerative refrigerant inside the second air conditioning unit (U2), so that the second air conditioning unit (U2) operates under high pressure.
  • It can be a type of cascade cycle that connects a cycle and a low-pressure cycle in parallel.
  • the second outdoor unit 200, the second recovery heat exchanger 440, and the first module heat exchanger 730 of the first heat exchange module 700 may constitute a second main refrigerant cycle.
  • a second main refrigerant may flow in the second main refrigerant cycle.
  • the second main refrigerant may be a different type of refrigerant from the first regenerated refrigerant.
  • the second main refrigerant may include R410A refrigerant
  • the first regenerated refrigerant may include R134A refrigerant.
  • the first module heat exchanger 730 of the first heat exchange module 700 may operate as a condenser for the second main refrigerant and an evaporator for the first regenerated refrigerant.
  • the first module heat exchanger 730 is composed of plate heat exchangers and can exchange heat between two different refrigerants while passing them through independent paths. That is, the first module heat exchanger 730 can enable heat exchange between refrigerants.
  • the first heat exchange module 700 may be disposed between the second transfer module 600 and the indoor unit 400.
  • the first heat exchange module 700 may form part of the heat exchange units 700 and 900 together with the second heat exchange module 900, which will be described below.
  • the heat exchange units 700 and 900 can be viewed as a type of outdoor unit and can be placed outdoors.
  • the first heat exchange module 700 may include a first module compressor 710, a first module accumulator 720, a first module heat exchanger 730, and a first module expansion valve 740.
  • the first module expansion valve 740 and the first module compressor 710 may each be connected to the first regenerative heat exchanger 450.
  • the first module heat exchanger 730 can be a condenser for the second main refrigerant and an evaporator for the first regenerated refrigerant at the same time. As described above, this may be possible because the first module heat exchanger 730 has a plate heat exchanger structure.
  • the first module heat exchanger 730 may be a double-tube type heat exchanger rather than a plate-type heat exchanger.
  • the first regenerative refrigerant of the first regenerative heat exchanger 450 can radiate heat to the air delivered toward the dehumidification rotor 460. Air heated by heat dissipation of the first regenerative refrigerant of the first regenerative heat exchanger 450 can be used for regeneration of the dehumidification rotor 460, and thus the regeneration efficiency of the dehumidification rotor 460 can be increased. . Since the first regenerative heat exchanger 450 can regenerate the dehumidifying rotor 460, power consumption for operating the regenerative heater 465 for regenerating the dehumidifying rotor 460 can be reduced.
  • the first regenerated refrigerant may include a refrigerant with a high extraction temperature, for example, R134A refrigerant.
  • the first regenerative heat exchanger 450 can generate a high temperature of 80°C or more during the condensation process and regenerate the high-temperature regenerative dehumidification rotor 460. Since the efficiency of the regenerative heater 465 is very low, the energy efficiency of the entire air conditioner can be greatly increased by regenerating the dehumidification rotor 460 using the first regenerative heat exchanger 450.
  • a dehumidifying rotor 460 and a regenerative heater 465 may be disposed in the indoor duct (S).
  • the dehumidifying rotor 460 dehumidifies air independently of the first indoor heat exchanger 421, the second indoor heat exchanger 425, the third indoor heat exchanger 430, and the fourth indoor heat exchanger 435. You can.
  • the dehumidifying rotor 460 may be configured as a commonly used adsorption dehumidifier (desiccant dehumidifier). More precisely, the dehumidifying rotor 460 and the regenerative heater 465 may be viewed as one dehumidifying device. In this case, the dehumidifying rotor 460 becomes a processing unit, and the regeneration heater 465 becomes a regeneration unit.
  • the dehumidifying rotor 460 may have a ring-shaped structure.
  • the dehumidifying rotor 460 may be arranged to surround the indoor duct (S) in a circle.
  • the dehumidification rotor 460 is shown as crossing the indoor unit 400, but the dehumidification rotor 460 surrounds the inside of the indoor unit 400, that is, the inside of the indoor duct (S) in a circle. It can be deployed.
  • the dehumidification rotor 460 may be disposed between the first regenerative heat exchanger 450 and the second recovery heat exchanger 440.
  • the first regenerative heat exchanger 450 is used as a condenser, and the refrigerant in the first regenerative heat exchanger 450 radiates heat in the direction of the dehumidification rotor 460 to regenerate the dehumidification rotor 460.
  • the refrigerant in the second recovery heat exchanger 440 can absorb heat from the very high temperature exhaust air (EA) heated by the dehumidification rotor 460. Accordingly, the evaporation efficiency of the second recovery heat exchanger 440 is increased, and the cooling efficiency of the entire second air conditioning unit (U2) is improved.
  • EA very high temperature exhaust air
  • the second recovery heat exchanger 440 may be disposed between the dehumidification rotor 460 and the second exhaust port (G6).
  • the air heated through the dehumidifying rotor 460 becomes exhaust gas (EA) discharged to the second exhaust port (G6), and this exhaust gas (EA) is used to heat the second recovery heat exchanger (440). Evaporation efficiency can be increased.
  • a plurality of temperature/humidity sensors may be disposed in the air conditioner.
  • a temperature/humidity sensor may be placed respectively.
  • the control unit 1000 can control each component based on temperature and humidity information obtained through the temperature/humidity sensor.
  • a second bypass (B2) may be disposed in the indoor duct (S).
  • the second bypass (B2) may be disposed on the third air conditioning unit (U3).
  • the second bypass (B2) can be viewed as part of a path formed inside the indoor duct (S).
  • the second bypass B2 may include a blowing fan for air flow.
  • the second bypass (B2) (i) allows air that has passed through the first indoor heat exchanger (421), the second indoor heat exchanger (425), and the dehumidifying rotor (460) to be transferred to the third indoor heat exchanger (430).
  • the outside air (OA) flowing in through the second external device (G2) is connected to the second outside air (OA);
  • the paths toward the regenerative heat exchanger 470 can be connected to each other.
  • a part of the air that has passed through the dehumidifying rotor 460 becomes supply air (SA) while passing through the fourth indoor heat exchanger 435 and is supplied to the indoor space through the air supply opening G3, and the remaining part is supplied to the indoor space through the air supply opening G3. It can be moved through the second bypass (B2).
  • the air moving through the second bypass (B2) may be mixed with the outside air (OA) introduced through the second outside mechanism (G2) and flow into the second regenerative heat exchanger (470).
  • all of the air that has passed through the dehumidifying rotor 460 becomes supply air (SA) and is not supplied to the supply opening (G3), and some of it can be reused through the second bypass (B2).
  • SA supply air
  • G3 supply opening
  • B2 second bypass
  • the temperature of the air passing through the dehumidifying rotor 460 is lower than the temperature of external air (OA) supplied from the outside. Accordingly, the air moving through the second bypass (B2) mixes with the outside air (OA), thereby lowering the temperature of the air and increasing the driving efficiency of the third air conditioning unit (U3).
  • the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435 may be disposed on the opposite side of the second regenerative heat exchanger 470.
  • the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435 can cool and dehumidify the air that has passed through the dehumidification rotor 460.
  • the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435 may be spaced apart from the primary indoor heat exchanger 420 to form a secondary indoor heat exchanger.
  • the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435 include the third outdoor unit 300, the third transfer module 800, the second heat exchange module 900, and the second regenerative heat exchanger ( Together with 470), a third air conditioning unit (U3) can be formed.
  • the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435 may be operated as evaporators.
  • the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435 can cool/dehumidify outdoor air (OA) or ventilation (RA) while operating as an evaporator.
  • OA outdoor air
  • RA ventilation
  • the air previously cooled/dehumidified by the first indoor heat exchanger (421) and the second indoor heat exchanger (425) is further cooled/dehumidified by the third indoor heat exchanger (430) and the fourth indoor heat exchanger (435).
  • the humidity in indoor space can be greatly reduced.
  • the dehumidifying rotor 460 which will be described below, is also used together with the first indoor heat exchanger 421, the second indoor heat exchanger 425, the third indoor heat exchanger 430, and the fourth indoor heat exchanger 435.
  • OA outside air
  • RA ventilation
  • the third indoor heat exchanger 430 may be connected to the third transfer module 800 through a third heat exchange transfer pipe (L317).
  • the fourth indoor heat exchanger 435 may be connected to the third transfer module 800 through a fourth heat exchange transfer pipe (L324).
  • the third indoor heat exchanger (430) is the third refrigerant heat exchanger (830) of the third transfer module (800) through the third heat exchange transfer pipe (L317) and the third heat exchange connector (L316). can be connected to At this time, the third heat exchange transmission pipe (L317) and the third heat exchange connection pipe (L316) may be the third low pressure pipe. That is, when the third indoor heat exchanger (430) is operated as an evaporator, the low-temperature/low-pressure third main refrigerant discharged from the third indoor heat exchanger (430) is transferred to the third heat exchange transfer pipe (L317) and the third heat exchanger (L317). It flows to the third refrigerant heat exchanger 830 through the third heat exchange connection pipe L316, and the third refrigerant heat exchanger 830 can guide the third main refrigerant to the third outdoor unit 300.
  • the fourth indoor heat exchanger 435 may be connected to the third refrigerant heat exchanger 830 of the third transfer module 800 through the 3-2 distribution connector L319.
  • the fourth indoor heat exchanger 435 may be connected to the second module heat exchanger 930 through the fourth heat exchange transfer pipe L324.
  • the fourth heat exchange transfer pipe (L324) transfers the medium-temperature/high-pressure third main refrigerant condensed in the third outdoor heat exchanger (330) to the fourth heat exchanger (L324). It can be evaporated by passing it to the indoor heat exchanger (435).
  • the low-temperature/low-pressure third main refrigerant discharged from the fourth indoor heat exchanger (435) passes through the third refrigerant distribution valve (810) through the 3-2 distribution connector (L319) to the third refrigerant heat exchanger. It flows to (830), and the third main refrigerant may be guided to the third outdoor unit (300) through the third refrigerant heat exchanger (830).
  • the fourth heat exchange transfer pipe (L324) may constitute a third liquid pipe
  • the 3-2 distribution connection pipe (L319) may constitute a third low pressure pipe.
  • the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435 become additional indoor heat exchangers, and the additional indoor heat exchanger forms a second heat exchange unit together with the second regenerative heat exchanger 470. It can be seen that it does.
  • the second regenerative heat exchanger 470 may operate as a condenser, and the second regenerative heat exchanger 470 may flow the second regenerative refrigerant together with the second heat exchange module 900.
  • the second regenerative heat exchanger 470 may be connected to the second module heat exchanger 930 of the second heat exchange module 900 through a second regenerative heat exchange connector 347.
  • the second regenerative heat exchanger 470 may form a second regenerative refrigerant cycle that flows the second regenerative refrigerant. That is, the second heat exchange module 900 and the second regenerative heat exchanger 470 operate an independent second regenerative refrigerant inside the third air conditioning unit (U3), so that the third air conditioning unit (U3) operates under high pressure. It can be a type of cascade cycle that connects a cycle and a low-pressure cycle in parallel.
  • the third outdoor unit 300, the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435, and the second module heat exchanger 930 of the second heat exchange module 900 are A third main refrigerant cycle can be configured.
  • a third main refrigerant may flow in the third main refrigerant cycle.
  • the third main refrigerant may be a different type of refrigerant from the second regenerated refrigerant.
  • the third main refrigerant may include R410A refrigerant
  • the second regenerative refrigerant may include R134A refrigerant.
  • the second module heat exchanger 930 of the second heat exchange module 900 may operate as a condenser for the third main refrigerant and an evaporator for the second regenerated refrigerant.
  • the second module heat exchanger 930 is composed of plate heat exchangers and can exchange heat between two different refrigerants while passing them through independent paths. That is, the second module heat exchanger 930 can enable heat exchange between refrigerants.
  • the second heat exchange module 900 may be disposed between the third transfer module 800 and the indoor unit 400.
  • the second heat exchange module 900 may form part of the heat exchange units 700 and 900 together with the first heat exchange module 700.
  • the heat exchange units 700 and 900 can be viewed as a type of outdoor unit and can be placed outdoors.
  • the second heat exchange module 900 may include a second module compressor 910, a second module accumulator 920, a second module heat exchanger 930, and a second module expansion valve 940.
  • the second module expansion valve 940 and the second module compressor 910 may each be connected to the second regenerative heat exchanger 470.
  • the second module heat exchanger 930 can be a condenser for the third main refrigerant and at the same time an evaporator for the second regenerated refrigerant. As described above, this may be possible because the second module heat exchanger 930 has a plate heat exchanger structure.
  • the second module heat exchanger 930 may be a double pipe type heat exchanger rather than a plate heat exchanger.
  • the second regenerative heat exchanger 470 operates as a condenser, and the second regenerative refrigerant of the second regenerative heat exchanger 470 is supplied to the air delivered in the direction of the dehumidification rotor 460 (direction K3 in FIG. 1). Can dissipate heat. Air heated by heat dissipation of the second regenerative refrigerant flowing through the second regenerative heat exchanger 470 can be used for regeneration of the dehumidification rotor 460, thereby increasing the regeneration efficiency of the dehumidification rotor 460. You can. Since the second regenerative heat exchanger 470 can regenerate the dehumidifying rotor 460, power consumption for operating the regenerative heater 465 for regenerating the dehumidifying rotor 460 can be reduced.
  • an operation mode can be selected (S200).
  • the operating mode may vary depending on the conditions of the location where the air conditioner is installed.
  • the operation mode may be selected depending on conditions such as temperature, humidity, and internal volume of the installation location.
  • the operation mode may be comprised of a first air conditioning mode (S310), a second air conditioning mode (S320), and a third air conditioning mode (S330).
  • the first air conditioning mode, second air conditioning mode, or third air conditioning mode can be automatically selected under different conditions.
  • the first air conditioning mode, the second air conditioning mode, or the third air conditioning mode may be selected depending on the external temperature.
  • the first air conditioning mode can be selected at 27°C or higher (T1)
  • the second air conditioning mode can be selected at 15°C or lower (T2)
  • the third air conditioning mode can be selected at 15°C-27°C (T3).
  • T1 27°C or higher
  • T2 the second air conditioning mode
  • T3 15°C-27°C
  • the temperature conditions may vary depending on the user's choice or environment.
  • humidity conditions may be used as a standard for selecting the operation mode instead of the temperature conditions.
  • the operation of the components constituting the first air conditioning unit (U1), the second air conditioning unit (U2), and the third air conditioning unit (U3) can be controlled.
  • S410 the first outdoor compressor 110, the second outdoor compressor 210, and the third outdoor compressor 310 are operated.
  • the first module heat exchanger 730 and the second module heat exchanger 930 may each be operated as a condenser.
  • the first module heat exchanger 730 and the second module heat exchanger 930 may each be operated as an evaporator.
  • the control unit 1000 includes the first main outdoor valve 150, the first sub-outdoor valve 160, the second main outdoor valve 250, the second sub-outdoor valve 260, and the third main valve.
  • the control unit 1000 includes the first main outdoor valve 150, the first sub-outdoor valve 160, the second main outdoor valve 250, the second sub-outdoor valve 260, and the third main valve.
  • the outdoor valve 350, the third sub-outdoor valve 360, the first transmission module 500, the second transmission module 600, and the third transmission module 800 the first air conditioning
  • the refrigerant flow in the unit (U1), the second air conditioning unit (U2), and the third air conditioning unit (U3) can be controlled.
  • each component can be operated as a condenser or evaporator.
  • control unit 1000 controls (i) the first main outdoor valve 150, the first sub-outdoor valve 160, the second main outdoor valve 250, and the second sub-outdoor valve. (260), the third main outdoor valve 350, the third sub-outdoor valve 360, the first delivery module 500, the second delivery module 600, and the third delivery module 800.
  • the flows of the first main refrigerant, the second main refrigerant, and the third main refrigerant can be controlled by controlling (ii) the first heat exchange module 700 and the second heat exchange module 900, respectively.
  • the flow of the first regenerated refrigerant and the second regenerated refrigerant can be controlled.
  • the first air conditioning mode can perform a dehumidifying and air cooling function to lower the indoor temperature.
  • FIG 4 when in the first air conditioning mode, the main refrigerant flow and the regenerative refrigerant flow are indicated by arrows.
  • the first main refrigerant flow in the first air conditioning unit (U1) is shown in the form of a flowchart
  • Figure 6 the second regenerative refrigerant flow and the first regenerative refrigerant flow in the second air conditioning unit (U2) are shown in the form of a flowchart
  • 7 the third refrigerant flow and the second regenerated refrigerant flow in the third air conditioning unit (U3) are shown in the form of a flowchart.
  • the first outdoor compressor 110 compresses the first main refrigerant, High-temperature/high-pressure refrigerant is discharged through the first compressor discharge pipe (L101). Some of the discharged high-temperature/high-pressure first main refrigerant is transferred to the first recovery heat exchanger (410), and the remaining part is transferred to the first outdoor heat exchanger (130). That is, the first recovery heat exchanger 410 and the first outdoor heat exchanger 130 can each be used as a condenser.
  • the path through which the first main refrigerant flows to the first recovery heat exchanger 410 may be the first high pressure pipe.
  • the first high pressure pipe may be the first compressor discharge pipe (L101), the 1-1 outdoor unit connection pipe (L103), and the 1-1 distribution connection pipe (L105).
  • the first refrigerant distribution valve 510 of the first delivery module 500 is disposed between the 1-1 outdoor unit connection pipe (L103) and the 1-1 distribution connection pipe (L105), The first refrigerant distribution valve 510 can connect them.
  • the path through which the first main refrigerant flows to the first outdoor heat exchanger 130 may also be the first high pressure pipe.
  • the first high pressure pipe may be the first compressor discharge pipe (L101)-1-1 outdoor heat exchange connection pipe (L102).
  • L101 first compressor discharge pipe
  • L102 first outdoor heat exchange connection pipe
  • the first main refrigerant may be supplied to the first recovery heat exchanger 410 at a flow rate greater than that of the first outdoor heat exchanger 130. For example, about 70% of the first main refrigerant may be supplied to the first recovery heat exchanger 410, and about 30% of the first main refrigerant may be supplied to the first outdoor heat exchanger 130.
  • the first main refrigerant condensed in the first recovery heat exchanger 410 is in a medium temperature/high pressure state and can be transferred to the first indoor heat exchanger 421 and the second indoor heat exchanger 425.
  • the path of the first main refrigerant flowing to the first indoor heat exchanger 421 and the second indoor heat exchanger 425 may be the first liquid pipe.
  • the first indoor unit connection pipe (L128) becomes the first liquid pipe through which the refrigerant flows to the first indoor heat exchanger 421, and the first indoor unit connection pipe (L128) - first indoor branch pipe ( L125) becomes the first liquid pipe through which the refrigerant flows to the second indoor heat exchanger (425).
  • the first indoor expansion valve 423 is disposed on the 1-1 indoor heat exchange connection pipe (L124), and the refrigerant is expanded in the first indoor expansion valve 423 in the first indoor heat exchanger 421, which is an evaporator. ) can flow.
  • the second indoor expansion valve 427 is disposed in the first-second indoor heat exchange connection pipe (L126), and the first main refrigerant is expanded in the second indoor expansion valve 427 and is used in the second indoor heat exchanger, which is an evaporator. It can flow into the group 425.
  • first indoor heat exchanger 421 and the second indoor heat exchanger 425 each function as an evaporator, they can cool/dehumidify the air inside the indoor duct (S).
  • Outdoor air (OA) that is primarily cooled/dehumidified while passing through the first indoor heat exchanger 421 may be secondarily cooled/dehumidified while passing through the second indoor heat exchanger 425.
  • the direction K1 in which the outside air (OA) passes through the first indoor heat exchanger 421 and the second indoor heat exchanger 425 and is discharged is indicated by a thick arrow.
  • the first main refrigerant may be supplied to the first indoor heat exchanger 421 and the second indoor heat exchanger 425 at different ratios.
  • a larger amount of first main refrigerant may be supplied to the first indoor heat exchanger 421, which is close to the first recovery heat exchanger 410, than to the second indoor heat exchanger 425. This is because a larger amount of first main refrigerant was supplied to the first recovery heat exchanger 410 than to the first outdoor heat exchanger 130 under the control of the control unit 1000.
  • about 70% of the first main refrigerant may be supplied to the first indoor heat exchanger 421, and about 30% of the first main refrigerant may be supplied to the second indoor heat exchanger 425.
  • the first indoor heat exchanger 421 and the second indoor heat exchanger 425 may be arranged side by side along the air flow direction inside the indoor duct (S). Accordingly, the first indoor heat exchanger 421 and the second indoor heat exchanger 425 can continuously cool/dehumidify the outside air (OA).
  • the outdoor air (OA) cooled by the first indoor heat exchanger 421 and the second indoor heat exchanger 425 continues to flow and is dehumidified three times while passing through the dehumidifying rotor 460, and finally, the third indoor heat exchanger 425 It is cooled/dehumidified in the 4th and 5th stages by the indoor heat exchanger 430 and the fourth indoor heat exchanger 435 to become supply air (SA), and can be supplied to the indoor space through the supply opening (G3).
  • SA supply air
  • the first main refrigerant is supplied to the first accumulator (120) through the first accumulator connection pipe (L111) and the first accumulator suction pipe (L113), and then again to the first outdoor through the first compressor suction pipe (L115). It can be sucked into the compressor 110. Therefore, the first heat exchange induction pipe (L117) - the first heat exchange connection pipe (L116) - the first accumulator connection pipe (L111) - the first accumulator suction pipe (L113) may be the first low pressure pipe.
  • the first refrigerant heat exchanger 530 is a low-temperature/low-pressure first main refrigerant discharged from the first indoor heat exchanger 421 and the second indoor heat exchanger 425, and the first outdoor heat exchanger ( 130), the condensed medium temperature/high pressure refrigerant can be heat exchanged with each other.
  • the medium-temperature/high-pressure first main refrigerant condensed in the first outdoor heat exchanger (130) passes through the first refrigerant heat exchanger (530) to the first indoor heat exchanger (421) and the second indoor heat exchanger (425). Heat can be dissipated (heat exchanged) into the low-temperature/low-pressure first main refrigerant discharged from .
  • the first main refrigerant of medium temperature/high pressure can be supplied to the first indoor heat exchanger 421 and the second indoor heat exchanger 425 in the state of liquid refrigerant.
  • the first recovery heat exchanger 410 operates as a condenser and the first main refrigerant of the first recovery heat exchanger 410 flows toward the exhaust (EA). It can dissipate heat. That is, the first main refrigerant of the first recovery heat exchanger 410 can radiate heat to the exhaust EA while exchanging heat with the exhaust EA discharged through the first exhaust port G5.
  • the ventilation (RA) passes through the first recovery heat exchanger (410), and the first main refrigerant of the first recovery heat exchanger (410) radiates heat to the exhaust (EA), which is represented by a bold arrow. It is done.
  • some of the air supplied to the first recovery heat exchanger 410 is ventilation (RA) drawn from the indoor space and has a temperature lower than the outside air temperature.
  • RA ventilation
  • the exhaust air (EA) that exchanges heat with the first recovery heat exchanger (410) has a lower temperature than the outside air
  • heat dissipation of the first main refrigerant passing through the first recovery heat exchanger (410) can be performed more effectively.
  • the first main refrigerant of the first recovery heat exchanger 410 is more effectively dissipated by using the waste heat of the exhaust (EA). Accordingly, the high operating pressure of the refrigeration cycle of the first air conditioning unit (U1) is lowered, thereby improving efficiency and reducing power consumption.
  • the air that exchanges heat with the first main refrigerant of the first recovery heat exchanger 410 is ventilation (RA) supplied from indoors, so its temperature is lower than that of the outside air, and therefore heat can be dissipated smoothly without overload.
  • RA ventilation
  • the first heat recovery expansion valve 415 may be disposed in the first heat recovery connector L127 connected to the first recovery heat exchanger 410.
  • the control unit 1000 can control the flow rate of the high-temperature/high-pressure first main refrigerant supplied to the first recovery heat exchanger 410 by adjusting the opening rate of the first heat recovery expansion valve 415. Since the high-temperature/high-pressure first main refrigerant flow rate discharged from the first outdoor compressor 110 is determined, when the first main refrigerant flow rate supplied to the first recovery heat exchanger 410 is adjusted, the first outdoor heat exchanger 410 The flow rate of the first main refrigerant supplied to (130) can also be adjusted. By adjusting the refrigerant flow rate, the degree of recovery of waste heat through the first recovery heat exchanger 410 can be adjusted.
  • the first recovery heat exchanger (410) operates as a condenser and the first recovery heat exchanger (410) operates as a condenser. It is more effective for the first main refrigerant of the single recovery heat exchanger (410) to radiate heat to the ventilation (RA) than to radiate heat to the outside air.
  • the first recovery heat exchanger (410) operates as a condenser and the first recovery heat exchanger Dissipation of heat by the first main refrigerant of the unit 410 to the ventilation RA is less efficient than dissipation of heat to external air.
  • the opening rate of the first heat recovery expansion valve 415 is adjusted to reduce the flow rate of the first main refrigerant flowing into the first recovery heat exchanger 410, which is a condenser, and the first outdoor heat exchanger 130, which is another condenser. ), heat dissipation efficiency can be increased by increasing the flow rate of the first main refrigerant flowing into the system.
  • the second outdoor compressor (210)
  • the second main refrigerant is compressed, and the high-temperature/high-pressure second main refrigerant is discharged through the second compressor discharge pipe (L201).
  • Some of the discharged high-temperature/high-pressure second main refrigerant is transferred to the first module heat exchanger (730) through the second transfer module (600), and the remaining part is transferred to the second outdoor heat exchanger (230).
  • the first module heat exchanger 730 and the second outdoor heat exchanger 230 may each be used as a condenser.
  • the path through which the second main refrigerant flows to the first module heat exchanger 730 may be the second high pressure pipe.
  • the second high pressure pipe may be the second compressor discharge pipe (L201) - the 2-1 outdoor unit connection pipe (L203) - the 2-1 distribution connection pipe (L205).
  • the second refrigerant distribution valve 610 of the second delivery module 600 is disposed between the 2-1 outdoor unit connection pipe (L203) and the 2-1 distribution connection pipe (L205), The second refrigerant distribution valve 610 can connect them.
  • the path through which the second main refrigerant flows to the second outdoor heat exchanger 230 may also be a second high-pressure pipe.
  • the second high pressure pipe may be the second compressor discharge pipe (L201) - the 2-1 outdoor heat exchange connection pipe (L202).
  • the second main outdoor valve 250 and the second sub-outdoor valve 260 can be viewed as OFF.
  • the second main refrigerant condensed in the first module heat exchanger 730 and the second outdoor heat exchanger 230 may be mixed with each other and evaporated in the second recovery heat exchanger 440.
  • the second main refrigerant of the second recovery heat exchanger (440) may absorb heat from the exhaust (EA) discharged to the outside from the indoor unit (400). At this time, since the temperature of the exhaust EA is higher than that of the external air, the amount of heat absorption may increase. Accordingly, the low operating pressure of the refrigeration cycle by the second air conditioning unit (U2) increases, thereby reducing power consumption.
  • the second recovery heat exchanger (440) utilizes the temperature of the exhaust (EA) when operating as an evaporator, thereby reducing the power consumption required to operate the refrigeration cycle of the second air conditioning unit (U2). can do.
  • the second recovery heat exchanger 440 may be placed adjacent to the second exhaust port G6 through which the exhaust gas EA is discharged.
  • the second recovery heat exchanger 440 may be disposed inside the indoor duct (S) such that the surface of the second recovery heat exchanger (440) faces the second exhaust port (G6).
  • the exhaust EA that has passed through the second recovery heat exchanger 440 may be discharged to the external space through the second exhaust port G6.
  • the second recovery heat exchanger 440 may be disposed between the dehumidification rotor 460 and the second exhaust port G6.
  • the air heated through the dehumidifying rotor 460 becomes exhaust air (EA) discharged through the second exhaust port (G6), and the evaporation efficiency of the second recovery heat exchanger (440) is increased by using this exhaust air (EA). It can go even higher.
  • the first regenerative heat exchanger 450 together with the first heat exchange module 700, may form a separate first regenerative refrigerant cycle that flows the first regenerative refrigerant.
  • heat generated in the first regenerative heat exchanger 450 which operates as a condenser, may be transferred to the dehumidification rotor 460.
  • the air introduced into the second external mechanism (G2), the air delivered through the second bypass (B2), and the air passing through the second regenerative heat exchanger (470) are transferred to the first regenerative heat exchanger (450). ), heat exchange occurs and the temperature may rise further.
  • the heated air can be delivered to the dehumidification rotor 460 to regenerate the dehumidification rotor 460. Accordingly, the amount of use of the regeneration heater 465 for regeneration of the dehumidification rotor 460 can be reduced, and as a result, the power consumption for driving the second air conditioning unit (U2) can be reduced.
  • the air radiated from the first regenerative heat exchanger 450 passing through the dehumidifying rotor 460 is represented by a thick arrow.
  • the second main refrigerant may be supplied to the first module heat exchanger 730 at a flow rate greater than that of the second outdoor heat exchanger 230.
  • about 70% of the second main refrigerant may be supplied to the first heat exchange module 700, and about 30% of the second main refrigerant may be supplied to the second outdoor heat exchanger 230.
  • the first regenerative refrigerant may flow through the first regenerative refrigerant cycle composed of the first heat exchange module 700 and the first regenerative heat exchanger 450.
  • the first module compressor 710 discharges the compressed high-temperature/high-pressure first regenerative refrigerant to the discharge pipe L245 of the first module compressor 710.
  • the discharged high-temperature/high-pressure first regenerative refrigerant is transferred to the first regenerative heat exchanger 450, and the first regenerative heat exchanger 450 can condense the first regenerative refrigerant.
  • the first regenerative refrigerant radiates heat, and after dissipating heat, the first regenerative refrigerant can be converted into a medium-temperature and high-pressure liquid refrigerant. Then, the first regenerative refrigerant is delivered to the first module expansion valve 740 through the first regenerative heat exchange connection pipe (L247) and expanded, and then through the first module heat exchange connection pipe (L248) to the first module heat exchanger. It may be delivered to (730) and evaporated. The evaporated first regenerated refrigerant may be delivered to the first module accumulator 720 through the first module accumulator suction pipe (L241).
  • the second main refrigerant and the first regenerated refrigerant passing through the first module heat exchanger 730 may exchange heat with each other.
  • the second main refrigerant may be condensed in the first module heat exchanger 730, radiating heat to the first regenerated refrigerant, and converted into a liquid phase. Accordingly, the second main refrigerant can dissipate heat more effectively, and the operating high pressure of the second main refrigerant cycle of the second air conditioning unit (U2) is lowered, improving efficiency and reducing power consumption.
  • the first regenerated refrigerant may absorb heat from the second main refrigerant flowing through the first module heat exchanger 730. At this time, because the temperature of the second main refrigerant is high, the amount of heat absorption may increase. Accordingly, the operating low pressure of the first regenerative refrigerant cycle constituting the second air conditioning unit (U2) increases, thereby reducing power consumption.
  • the air blowing temperature of the first regenerative heat exchanger 450 which constitutes the first regenerative refrigerant cycle, can be increased to about 80°C or higher and used as regenerative energy for the high-temperature regenerative dehumidifying rotor 460. In this way, energy efficiency can be further increased by reducing the amount of use of the low-efficiency regenerative heater 465.
  • Air heated while passing through the second regenerative heat exchanger 470 constituting the third air conditioning unit U3 may be transferred in the direction K3 to the first regenerative heat exchanger 450.
  • the air flow is represented by a thick arrow.
  • the air delivered in the direction K3 of the first regenerative heat exchanger 450 may be delivered to the dehumidifying rotor 460 in a state whose temperature is raised again by the first regenerative heat exchanger 450.
  • the air regenerated to high temperature by the dehumidification rotor 460 may be delivered to the second recovery heat exchanger 440. Air that has passed through the second recovery heat exchanger 440 may be exhausted (EA).
  • the third outdoor compressor 310 is the third refrigerant flow.
  • the main refrigerant is compressed, and the high-temperature/high-pressure third main refrigerant is discharged through the third compressor discharge pipe (L301).
  • Some of the discharged high-temperature/high-pressure third main refrigerant is transferred to the second module heat exchanger (930) through the third transfer module (800), and the remaining part is transferred to the third outdoor heat exchanger (330).
  • the second module heat exchanger 930 and the third outdoor heat exchanger 330 may each be used as a condenser.
  • the path through which the third main refrigerant flows to the second module heat exchanger 930 may be the second high pressure pipe.
  • the second high pressure pipe may be the third compressor discharge pipe (L301) - the 3-1 outdoor unit connection pipe (L303) - the 3-1 distribution connection pipe (L305).
  • the third refrigerant distribution valve 810 of the third delivery module 800 is disposed between the 3-1 outdoor unit connection pipe (L303) and the 3-1 distribution connection pipe (L305), The third refrigerant distribution valve 810 can connect them.
  • the third main refrigerant condensed in the second module heat exchanger 930 is in a medium temperature/high pressure state and can be delivered to the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435.
  • the third main refrigerant condensed by the third outdoor heat exchanger 330 passes through the third refrigerant heat exchanger 830 and is mixed with the third main refrigerant condensed in the second module heat exchanger 930. You can.
  • the third main refrigerant mixed in this way can be delivered to the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435.
  • the path of the third main refrigerant flowing to the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435 may be a third liquid pipe.
  • the 3-2 outdoor unit connection pipe (L322) - the 2nd main connection pipe (L323) - the 4th heat exchange transmission pipe (L324) is connected to the 3rd indoor heat exchanger 430 and the 4th indoor heat exchanger ( 435), which becomes the third liquid pipe through which the refrigerant flows.
  • the first indoor heat exchanger 421, the second indoor heat exchanger 425, a portion of the dehumidifying rotor 460, the third indoor heat exchanger 430, and the fourth indoor heat exchanger 435 are installed in the indoor space. Inside the duct (S), they may be arranged continuously along the direction of air flow. Accordingly, the first indoor heat exchanger 421, the second indoor heat exchanger 425, a portion of the dehumidification rotor 460, the third indoor heat exchanger 430, and the fourth indoor heat exchanger 435 are The humidity of the outdoor air (OA) can be greatly reduced by continuously dehumidifying the outdoor air (OA) a total of five times.
  • the low-temperature/low-pressure third main refrigerant discharged from the third indoor heat exchanger 430 flows into the third transfer module 800 through the third heat exchange transfer pipe (L317), and the third transfer module 800 ) can be transmitted to the third refrigerant heat exchanger (830) through the third heat exchange connection pipe (L316).
  • the low-temperature/low-pressure third main refrigerant discharged from the fourth indoor heat exchanger (435) flows into the third transfer module (800) through the third-2 distribution connector (L319), and the third main refrigerant is discharged from the fourth indoor heat exchanger (435).
  • the refrigerant may be transferred to the third refrigerant heat exchanger 830 via the third refrigerant distribution valve 810.
  • the third main refrigerant that has passed through the third refrigerant heat exchanger (830) is supplied to the third accumulator (420) through the third accumulator connection pipe (L311) and the third accumulator suction pipe (L313). It can be sucked back into the third outdoor compressor (310) through the third compressor suction pipe (L315). Therefore, the 3-2 distribution connection pipe (L319) - the 3rd heat exchange connection pipe (L316) - the 3rd accumulator connection pipe (L311) - the 3rd accumulator suction pipe (L313) can be a third low pressure pipe.
  • the third refrigerant heat exchanger 830 is a low-temperature/low-pressure third main refrigerant discharged from the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435, and the third outdoor heat exchanger.
  • the medium temperature/high pressure third main refrigerant condensed at (330) can be heat exchanged with each other.
  • the medium-temperature/high-pressure third main refrigerant condensed in the third outdoor heat exchanger (330) passes through the third refrigerant heat exchanger (830) to the third indoor heat exchanger (430) and the fourth indoor heat exchanger (435). ) can radiate heat to the low-temperature/low-pressure third main refrigerant discharged from ).
  • the third main refrigerant of medium temperature/high pressure can be supplied to the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435 in the state of a liquid refrigerant.
  • the second regenerative refrigerant may flow through the second regenerative refrigerant cycle composed of the second heat exchange module 900 and the second regenerative heat exchanger 470.
  • the second module compressor 910 discharges the compressed high-temperature/high-pressure second regenerative refrigerant to the discharge pipe L345 of the second module compressor 910.
  • the discharged high-temperature/high-pressure second regenerative refrigerant is transferred to the second regenerative heat exchanger 470, and the second regenerative heat exchanger 470 can condense the second regenerative refrigerant.
  • the second regenerative refrigerant radiates heat, and after dissipating heat, the second regenerative refrigerant can be converted into a medium-temperature and high-pressure liquid refrigerant.
  • the second regenerative refrigerant may be transferred to the second module expansion valve 940 through the second regenerative heat exchange connection pipe L347 and expanded, and then transferred to the second module heat exchanger 930 to be evaporated.
  • the evaporated second regenerated refrigerant may be delivered to the second module accumulator through the second module accumulator suction pipe (L341).
  • the third main refrigerant and the second regenerative refrigerant passing through the second module heat exchanger 930 may exchange heat with each other.
  • the third main refrigerant may be condensed in the second module heat exchanger 930, radiating heat to the second regenerated refrigerant, and converted into a liquid phase. Accordingly, the third main refrigerant can dissipate heat more effectively, and the operating high pressure of the third main refrigerant cycle of the third air conditioning unit (U3) is lowered, improving efficiency and reducing power consumption.
  • the second regenerated refrigerant can absorb heat from the third main refrigerant flowing through the second module heat exchanger 930.
  • the operating low pressure of the second regenerative refrigerant cycle constituting the third air conditioning unit (U3) increases, thereby reducing power consumption.
  • the air blowing temperature of the second regenerative heat exchanger 470 which constitutes the second regenerative refrigerant cycle, can be increased to about 60°C or higher and delivered in the direction K3 to the first regenerative heat exchanger 450.
  • the air delivered in this way can be used as regenerative energy for the high-temperature regenerative dehumidifying rotor 460. Therefore, energy efficiency can be further increased by reducing the amount of use of the low-efficiency regenerative heater 465.
  • the third main refrigerant cools/dehumidifies the air while evaporating in the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435.
  • the second module heat exchanger 930 In order to evaporate the indoor heat exchanger 435, the second module heat exchanger 930 must dissipate heat while condensing the third main refrigerant.
  • the second regenerative refrigerant cycle absorbs the heat dissipation energy generated in this process, and the air discharge temperature generated when the second regenerative heat exchanger 470 radiates heat can be further increased. Accordingly, the amount of use of the dehumidification heater 365 can be further reduced.
  • outside air (OA) sucked in from the outside is heated while passing through the second regenerative heat exchanger (470) constituting the third air conditioning unit (U3), and the heated air is transferred to the first regenerative heat exchanger ( 450) can be transmitted in the direction (K3).
  • the air that previously passed through the dehumidifying rotor 460 is delivered in the direction K2 of the third indoor heat exchanger 430
  • the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435 are connected to each other. It goes through in order. In this process, the air undergoes 4th and 5th dehumidification and can have very low humidity. Additionally, air with reduced humidity can be supplied to the indoor space through the air supply opening (G3).
  • the second air conditioning mode can perform a dehumidifying and air heating function to increase the indoor temperature.
  • the first air conditioning unit (U1), the second air conditioning unit (U2), and the third air conditioning unit (U1) The operation of the components constituting the air conditioning unit (U3) can be controlled (S420). Specifically, the first outdoor compressor 110, the second outdoor compressor 210, the third outdoor compressor 310, the first module compressor 710, and the second module compressor 910 are operated.
  • first regenerative heat exchanger 450, the second regenerative heat exchanger 470, the first module heat exchanger 730, and the second module heat exchanger 930 may each be operated as a condenser.
  • the indoor heat exchanger (435), the first recovery heat exchanger (410) and the second recovery heat exchanger (440) (350), and the first module heat exchanger (730) and the second module heat exchanger (930) are each used as an evaporator. It can work.
  • the first module heat exchanger 730 and the second module heat exchanger 930 may be configured as a plate-type heat exchanger, and therefore are condensers of the second main refrigerant and third main refrigerant and the first regenerative refrigerant and It can be an evaporator for the second regenerated refrigerant.
  • the refrigerant flow in the second air conditioning mode is indicated by an arrow
  • the first main refrigerant flow in the first air conditioning unit (U1) is shown in the form of a flowchart
  • the second air conditioning unit (U1) In U2), the second main refrigerant flow and the first regeneration refrigerant flow are shown in the form of a flowchart
  • the third main refrigerant flow and the second regeneration refrigerant flow in the third air conditioning unit (U3) are shown in the form of a flowchart. there is.
  • the first outdoor compressor 110 compresses the first main refrigerant
  • High-temperature/high-pressure refrigerant is discharged through the first compressor discharge pipe (L101). All of the discharged high-temperature/high-pressure first main refrigerant is transferred to the second indoor heat exchanger (425). That is, the second indoor heat exchanger 425 can be used as a condenser.
  • the first outdoor heat exchanger 130, the first recovery heat exchanger 410, and the first indoor heat exchanger 421 can each serve as an evaporator. there is.
  • the path through which the first main refrigerant flows to the second indoor heat exchanger 425 may be the first high pressure pipe.
  • the first high pressure pipe may be the first compressor discharge pipe (L101), the 1-1 outdoor unit connection pipe (L103), and the 1-2 distribution connection pipe (L119).
  • the first refrigerant distribution valve 510 of the first delivery module 500 is disposed between the 1-1 outdoor unit connection pipe (L103) and the 1-2 distribution connection pipe (L119), The first refrigerant distribution valve 510 can connect them.
  • the first main outdoor valve 150 may be in the OFF state, and the first sub-outdoor valve 160 may be in the ON state.
  • the first main refrigerant condensed in the second indoor heat exchanger (425) is in a medium temperature/high pressure state, and the first outdoor heat exchanger (130), the first recovery heat exchanger (410), and the first indoor heat exchanger It may be transmitted to each group 421.
  • the path of the first main refrigerant flowing to the first outdoor heat exchanger 130, the first recovery heat exchanger 410, and the first indoor heat exchanger 421 may be the first liquid pipe.
  • the 1-2 heat exchange connection pipe (L123) - the 1-2 outdoor heat exchange connection pipe (L121) is the first heat exchanger through which the first main refrigerant flows to the first outdoor heat exchanger (130).
  • the first indoor branch pipe (L125) - first indoor unit connection pipe (L128) becomes a first liquid pipe through which the first main refrigerant flows to the first recovery heat exchanger (410)
  • the first indoor branch pipe (L125)-1-1 indoor heat exchange connection pipe (L124) becomes the first liquid pipe through which the first main refrigerant flows to the first indoor heat exchanger (421).
  • the first outdoor expansion valve 135 is disposed in the first-second outdoor heat exchange connection pipe (L121), and the first main refrigerant is expanded in the first outdoor expansion valve 135 and the first main refrigerant is an evaporator. 1It can flow to the outdoor heat exchanger (130).
  • the first heat recovery expansion valve 415 is disposed in the first heat recovery connection pipe (L127), and the first main refrigerant is expanded in the first recovery expansion valve to the first recovery heat exchanger 410, which is an evaporator. can flow.
  • the first indoor expansion valve 423 is disposed in the 1-1 indoor heat exchange connection pipe (L124), and the first main refrigerant is expanded in the first indoor expansion valve 423 and the first main refrigerant is an evaporator. 1It can flow to the indoor heat exchanger (421).
  • the first indoor heat exchanger 421 Since the first indoor heat exchanger 421 functions as an evaporator, it can cool/dehumidify the air inside the indoor duct (S).
  • the outdoor air (OA) that is primarily cooled/dehumidified while passing through the first indoor heat exchanger 421 may be heated to some extent while passing through the second indoor heat exchanger 425.
  • the direction K1 in which the outside air (OA) passes through the first indoor heat exchanger 421 and the second indoor heat exchanger 425 is indicated by a thick arrow.
  • Refrigerant may be supplied to the first outdoor heat exchanger 130, the first recovery heat exchanger 410, and the first indoor heat exchanger 421 at different ratios.
  • the flow rate of the first main refrigerant condensed in the second indoor heat exchanger (425) is in the following order: first recovery heat exchanger (410) > first indoor heat exchanger (421) > first outdoor heat exchanger (130). can be passed on.
  • more than 50% of the first main refrigerant condensed in the second indoor heat exchanger (425) may be transferred to the first recovery heat exchanger (410).
  • the outdoor air (OA) that has been first and secondarily dehumidified by the primary indoor heat exchanger 420 continues to flow and is dehumidified thirdly while passing through the dehumidifying rotor 460, and finally, the third indoor heat exchanger ( It is dehumidified in the 4th and 5th stages by the 430) and the fourth indoor heat exchanger 435 to become supply air (SA), and can be supplied to the indoor space through the supply opening (G3).
  • SA supply air
  • the first main refrigerant is supplied to the first accumulator (120) through the first accumulator connection pipe (L111) and the first accumulator suction pipe (L113), and then again to the first outdoor through the first compressor suction pipe (L115). It can be sucked into the compressor 110. Therefore, the first heat exchange induction pipe (L117) - the first heat exchange connection pipe (L116) - the first accumulator connection pipe (L111) - the first accumulator suction pipe (L113) may be the first low pressure pipe.
  • the low-temperature/low-pressure first main refrigerant discharged from the first recovery heat exchanger 410 flows into the first transfer module 500 through the first heat recovery connector (L127), and the first transfer module ( It can be joined to the first refrigerant heat exchanger 530 through the first refrigerant distribution valve 510 inside the 500). And, the first main refrigerant is supplied to the first accumulator (120) through the first accumulator connection pipe (L111) and the first accumulator suction pipe (L113), and then again to the first outdoor through the first compressor suction pipe (L115). It can be sucked into the compressor 110.
  • the low-temperature/low-pressure first main refrigerant discharged from the first outdoor heat exchanger (130) is sent to the first accumulator (120) through the 1-1 outdoor heat exchange connection pipe (L102) and the first accumulator suction pipe (L113). After being supplied, it can be sucked back into the first outdoor compressor 110 through the first compressor suction pipe (L115).
  • the first refrigerant heat exchanger 530 is a low-temperature/low-pressure first main refrigerant discharged from the first indoor heat exchanger 421 and the first recovery heat exchanger 410, and the second indoor heat exchanger ( The medium temperature/high pressure first main refrigerant condensed in 425) can be heat exchanged with each other.
  • the medium-temperature/high-pressure first main refrigerant condensed in the second indoor heat exchanger (425) passes through the first refrigerant heat exchanger (530) and the first indoor heat exchanger (421) and the first recovery heat exchanger (410). ) can radiate heat to the low-temperature/low-pressure first main refrigerant discharged from ).
  • the first main refrigerant in the medium temperature/high pressure liquid state is additionally supercooled and stabilized by the first refrigerant heat exchanger 530, or if the first main refrigerant from the condenser is in a two-phase state, the first main refrigerant is in a two-phase state. It can be supplied to the first outdoor heat exchanger (130) in a liquefied state by the refrigerant heat exchanger (530).
  • the first main refrigerant of the first recovery heat exchanger 410 can absorb heat from the exhaust EA while evaporating. That is, the first main refrigerant of the first recovery heat exchanger 410 can absorb heat from the exhaust EA while exchanging heat with the exhaust EA discharged through the first exhaust port G5.
  • the ventilation (RA) passing through the first recovery heat exchanger (410) and the refrigerant of the first recovery heat exchanger (410) absorbing heat from the exhaust (EA) are represented by thick arrows.
  • some of the air supplied to the first recovery heat exchanger 410 is ventilation (RA) drawn from the indoor space and has a temperature higher than the outside air temperature.
  • RA ventilation
  • the first main refrigerant of the first recovery heat exchanger (410) absorbs heat from the outside air rather than the ventilation ( It is effective to absorb heat from RA).
  • the first main refrigerant of the first recovery heat exchanger 410 can absorb heat more effectively by using the waste heat of the exhaust (EA). Accordingly, the amount of evaporative heat generated by the first recovery heat exchanger 410 increases, and the low operating pressure of the refrigeration cycle of the first air conditioning unit (U1) increases, thereby improving efficiency.
  • the second outdoor compressor 210 compresses the second main refrigerant , the high-temperature/high-pressure second main refrigerant is discharged to the second compressor discharge pipe (L201).
  • the entire discharged high-temperature/high-pressure second main refrigerant is transferred to the first module heat exchanger 730 of the first heat exchange module 700 through the second transfer module 600.
  • the first module heat exchanger 730 may be a condenser of the second main refrigerant cycle.
  • the path through which the refrigerant flows to the first heat exchange module 700 may be the second high pressure pipe.
  • the second high pressure pipe may be the second compressor discharge pipe (L201) - the 2-1 outdoor unit connection pipe (L203) - the 2-1 distribution connection pipe (L205).
  • the second refrigerant distribution valve 610 of the second delivery module 600 is disposed between the 2-1 outdoor unit connection pipe (L203) and the 2-1 distribution connection pipe (L205), The second refrigerant distribution valve 610 can connect them.
  • the second main outdoor valve 250 and the second sub-outdoor valve 260 can be viewed as OFF.
  • the second main refrigerant may exchange heat with the first regenerated refrigerant flowing through the first module heat exchanger (730).
  • the first regenerative heat exchanger 450 together with the first heat exchange module 700, may form a separate first regenerative refrigerant cycle that flows the first regenerative refrigerant.
  • heat generated in the first regenerative heat exchanger 450 which operates as a condenser, may be transferred to the dehumidification rotor 460.
  • the air introduced into the second external mechanism (G2), the air delivered through the second bypass (B2), and the air passing through the second regenerative heat exchanger (470) are transferred to the first regenerative heat exchanger (450). ), heat exchange occurs and the temperature may rise further.
  • the heated air can be delivered to the dehumidification rotor 460 to regenerate the dehumidification rotor 460. Accordingly, the amount of use of the regeneration heater 465 for regeneration of the dehumidification rotor 460 can be reduced, and as a result, the power consumption for driving the second air conditioning unit (U2) can be reduced.
  • the air radiated from the first regenerative heat exchanger 450 passing through the dehumidifying rotor 460 is represented by a thick arrow.
  • the first regenerative refrigerant may flow through the first regenerative refrigerant cycle composed of the first heat exchange module 700 and the first regenerative heat exchanger 450.
  • the first module compressor 710 discharges the compressed high-temperature/high-pressure first regenerative refrigerant to the discharge pipe L245 of the first module compressor 710.
  • the discharged high-temperature/high-pressure first regenerative refrigerant is transferred to the first regenerative heat exchanger 450, and the first regenerative heat exchanger 450 can condense the first regenerative refrigerant.
  • the first regenerative refrigerant radiates heat, and after dissipating heat, the first regenerative refrigerant can be converted into a medium-temperature and high-pressure liquid refrigerant. Then, the first regenerative refrigerant is delivered to the first module expansion valve 740 through the first regenerative heat exchange connection pipe (L247) and expanded, and then through the first module heat exchange connection pipe (L248) to the first module heat exchanger. It may be delivered to (730) and evaporated. The evaporated first regenerated refrigerant may be delivered to the first module accumulator through the first module accumulator suction pipe (L241).
  • the second main refrigerant and the first regenerated refrigerant passing through the first module heat exchanger 730 may exchange heat with each other.
  • the second main refrigerant may be condensed in the first module heat exchanger 730, radiating heat to the first regenerated refrigerant, and converted into a liquid phase. Accordingly, the second main refrigerant can dissipate heat more effectively, and the operating high pressure of the second main refrigerant cycle of the second air conditioning unit (U2) is lowered, improving efficiency and reducing power consumption.
  • the first regenerated refrigerant may absorb heat from the second main refrigerant flowing through the first module heat exchanger 730.
  • the operating low pressure of the first regenerative refrigerant cycle constituting the second air conditioning unit (U2) increases, thereby reducing power consumption.
  • the air blowing temperature of the first regenerative heat exchanger 450 which constitutes the first regenerative refrigerant cycle, can be increased to about 80°C or higher and used as regenerative energy for the high-temperature regenerative dehumidifying rotor 460. In this way, energy efficiency can be further increased by reducing the amount of use of the low-efficiency regenerative heater 465.
  • the air heated while passing through the second regenerative heat exchanger 470 constituting the third air conditioning unit (U3) may be transferred in the direction K3 to the first regenerative heat exchanger 450.
  • the air flow is represented by a thick arrow.
  • the air delivered in the direction K3 of the first regenerative heat exchanger 450 may be delivered to the dehumidifying rotor 460 in a state in which its temperature is raised again by the first regenerative heat exchanger 450.
  • the air regenerated to high temperature by the dehumidification rotor 460 may be delivered to the second recovery heat exchanger 440. Air that has passed through the second recovery heat exchanger 440 may be exhausted (EA).
  • part of the second main refrigerant condensed while exchanging heat while passing through the second module heat exchanger 930 may be transferred to the second recovery heat exchanger 440 and evaporated, and the remaining part may be transferred to the second outdoor heat exchanger. It can be transmitted and evaporated.
  • the medium-temperature/high-pressure second main refrigerant condensed in the first module heat exchanger (730) may be evaporated in the second recovery heat exchanger (440) and the second outdoor heat exchanger (230).
  • the path of the refrigerant flowing to the second recovery heat exchanger 440 and the second outdoor heat exchanger 230 may be the second liquid pipe.
  • the first main connection pipe (L224) becomes a second liquid pipe through which the second main refrigerant flows to the second recovery heat exchanger (440).
  • the first module connection pipe (L223) - the 2-2 outdoor unit connection pipe (L222) becomes a second liquid pipe through which the second main refrigerant flows to the second outdoor heat exchanger (230).
  • the second main refrigerant of the second recovery heat exchanger (440) may absorb heat from the exhaust (EA) discharged to the outside from the indoor unit (400). Since the exhaust air (EA) has a higher temperature than the outside air, the amount of heat absorption may increase. Accordingly, the low operating pressure of the refrigeration cycle by the second air conditioning unit (U2) increases, thereby reducing power consumption.
  • the second recovery heat exchanger (440) utilizes the temperature of the exhaust (EA) when operating as an evaporator, thereby reducing the power consumption required to operate the refrigeration cycle of the second air conditioning unit (U2). can do.
  • the low-temperature/low-pressure second main refrigerant evaporated in the second recovery heat exchanger 440 may flow into the second transfer module 600 through the second heat exchange transfer pipe (L217).
  • the air that has passed through the second indoor heat exchanger 425 may flow in the direction K1 of the dehumidifying rotor 460 and be dehumidified while passing through the dehumidifying rotor 460.
  • the air dehumidified in this way can be delivered in the direction K2 to the third indoor heat exchanger 430.
  • the air passing through the dehumidifying rotor 460 is represented by a thick arrow.
  • a part of the dehumidifying rotor 460 may be disposed along the air flow direction inside the indoor duct (S). Accordingly, the dehumidification rotor 460 re-dehumidifies the outdoor air (OA) that previously passed through the first indoor heat exchanger 421 and the second indoor heat exchanger 425, so that continuous dehumidification is performed a total of three times to maintain the outdoor air.
  • the humidity of (OA) can be lowered to a very low level.
  • the third outdoor compressor 310 compresses the third main refrigerant.
  • the high-temperature/high-pressure third main refrigerant is discharged to the third compressor discharge pipe (L301). All of the discharged high-temperature/high-pressure third main refrigerant is transferred to the second module heat exchanger 930 through the third transfer module 800, and the second module heat exchanger 930 can be used as a condenser.
  • the path through which the third main refrigerant flows to the second module heat exchanger 930 may be the second high pressure pipe.
  • the second high pressure pipe may be the third compressor discharge pipe (L301) - the 3-1 outdoor unit connection pipe (L303) - the 3-1 distribution connection pipe (L305).
  • the third refrigerant distribution valve 810 of the third delivery module 800 is disposed between the 3-1 outdoor unit connection pipe (L303) and the 3-1 distribution connection pipe (L305), The third refrigerant distribution valve 810 can connect them.
  • the third main refrigerant condensed in the second module heat exchanger (930) is in a medium temperature/high pressure state, and the third outdoor heat exchanger (330), the third indoor heat exchanger (430), and the fourth indoor heat exchanger It can be sent to (435).
  • the low-temperature/low-pressure third main refrigerant evaporated from the third and fourth indoor heat exchangers (430, 435) is flowing through the third refrigerant heat exchanger (830). Therefore, the medium-temperature/high-pressure third main refrigerant previously condensed by the second module heat exchanger 930 radiates heat (heat exchange) to the low-temperature/low-pressure third main refrigerant when passing through the third refrigerant heat exchanger 830. ) and then converted into liquid refrigerant, it can be delivered to the third outdoor heat exchanger (330).
  • the path of the third main refrigerant flowing into the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435, and the path of the third main refrigerant flowing into the third outdoor heat exchanger 330 are the third It can be a liquid pipe.
  • the fourth heat exchange transmission pipe (L324) becomes a third liquid pipe through which refrigerant flows to the third indoor heat exchanger (430) and the fourth indoor heat exchanger (435).
  • the second main connection pipe (L323) - the 3-2 outdoor unit connection pipe (L322) becomes a third liquid pipe through which refrigerant flows to the third indoor heat exchanger (430).
  • the first indoor heat exchanger 421, the second indoor heat exchanger 425, a portion of the dehumidification rotor 460, the third indoor heat exchanger 430, and the fourth indoor heat exchanger ( 435) may be arranged continuously along the air flow direction inside the indoor duct (S). Accordingly, the first indoor heat exchanger 421, the second indoor heat exchanger 425, a portion of the dehumidification rotor 460, the third indoor heat exchanger 430, and the fourth indoor heat exchanger 435 are The humidity of the outdoor air (OA) can be greatly reduced by continuously dehumidifying the outdoor air (OA) a total of five times.
  • the low-temperature/low-pressure third main refrigerant discharged from the third indoor heat exchanger 430 flows into the third transfer module 800 through the third heat exchange transfer pipe (L317), and the third transfer module 800 ) can be transmitted to the third refrigerant heat exchanger (830) through the third heat exchange connection pipe (L316).
  • the low-temperature/low-pressure third main refrigerant discharged from the fourth indoor heat exchanger (435) flows into the third transfer module (800) through the third-2 distribution connector (L319), and the third main refrigerant is discharged from the fourth indoor heat exchanger (435).
  • the refrigerant may be transferred to the third refrigerant heat exchanger 830 via the third refrigerant distribution valve 810.
  • the third main refrigerant that has passed through the third refrigerant heat exchanger (830) is supplied to the third accumulator (420) through the third accumulator connection pipe (L311) and the third accumulator suction pipe (L313). It can be sucked back into the third outdoor compressor (310) through the third compressor suction pipe (L315). Therefore, the 3-2 distribution connection pipe (L319) - the 3rd heat exchange connection pipe (L316) - the 3rd accumulator connection pipe (L311) - the 3rd accumulator suction pipe (L313) can be a third low pressure pipe.
  • the 3-2 outdoor heat exchange connection pipe (L321) and the 3-1 outdoor heat exchange connection pipe (L302) passing through the third outdoor heat exchanger (330) may also serve as third low-pressure pipes.
  • the third refrigerant heat exchanger 830 is a low-temperature/low-pressure third main refrigerant discharged from the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435, and the second module heat exchanger.
  • the medium temperature/high pressure liquid third main refrigerant condensed in (930) can be heat exchanged with each other.
  • the medium-temperature/high-pressure third main refrigerant condensed in the second module heat exchanger 930 passes through the third refrigerant heat exchanger 830 and is transferred to the third indoor heat exchanger 430 and the fourth indoor heat exchanger ( Heat can be dissipated in the low temperature/low pressure refrigerant discharged from 435). Accordingly, the third main refrigerant of medium temperature/high pressure can be supplied to the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435 in the state of a liquid refrigerant.
  • the second regenerative refrigerant may flow through the second regenerative refrigerant cycle composed of the second heat exchange module 900 and the second regenerative heat exchanger 470.
  • the second module compressor 910 discharges the compressed high-temperature/high-pressure second regenerative refrigerant to the discharge pipe L345 of the second module compressor 910.
  • the discharged high-temperature/high-pressure second regenerative refrigerant is transferred to the second regenerative heat exchanger 470, and the second regenerative heat exchanger 470 can condense the second regenerative refrigerant.
  • the second regenerative refrigerant radiates heat, and after dissipating heat, the second regenerative refrigerant can be converted into a medium-temperature and high-pressure liquid refrigerant.
  • the second regenerative refrigerant may be transferred to the second module expansion valve 940 through the second regenerative heat exchange connection pipe L347 and expanded, and then transferred to the second module heat exchanger 930 to be evaporated.
  • the evaporated second regenerated refrigerant may be delivered to the second module accumulator through the second module accumulator suction pipe (L341).
  • the third main refrigerant and the second regenerative refrigerant passing through the second module heat exchanger 930 may exchange heat with each other.
  • the third main refrigerant may be condensed in the second module heat exchanger 930, radiating heat to the second regenerated refrigerant, and converted into a liquid phase. Accordingly, the third main refrigerant can dissipate heat more effectively, and the operating high pressure of the third main refrigerant cycle of the third air conditioning unit (U3) is lowered, improving efficiency and reducing power consumption.
  • the second regenerated refrigerant can absorb heat from the third main refrigerant flowing through the second module heat exchanger 930.
  • the operating low pressure of the second regenerative refrigerant cycle constituting the third air conditioning unit (U3) increases, thereby reducing power consumption.
  • the air blowing temperature of the second regenerative heat exchanger 470 which constitutes the second regenerative refrigerant cycle, can be increased to about 50°C or higher and delivered in the direction K3 to the first regenerative heat exchanger 450.
  • the air delivered in this way can be used as regenerative energy for the high-temperature regenerative dehumidifying rotor 460. Therefore, energy efficiency can be further increased by reducing the amount of use of the low-efficiency regenerative heater 465.
  • the third main refrigerant cools/dehumidifies the air while evaporating in the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435.
  • the second module heat exchanger 930 In order to evaporate the indoor heat exchanger 435, the second module heat exchanger 930 must dissipate heat while condensing the third main refrigerant.
  • the second regenerative refrigerant cycle absorbs the heat dissipation energy generated in this process, and the air discharge temperature generated when the second regenerative heat exchanger dissipates heat can be further increased. Accordingly, the amount of use of the dehumidification heater 365 can be further reduced.
  • outside air (OA) sucked in from the outside is heated while passing through the second regenerative heat exchanger (470) constituting the third air conditioning unit (U3), and the heated air is transferred to the first regenerative heat exchanger ( 450) can be transmitted in the direction (K3).
  • the air that previously passed through the dehumidifying rotor 460 is delivered in the direction K2 of the third indoor heat exchanger 430
  • the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435 are connected to each other. It goes through in order. In this process, the air undergoes 4th and 5th dehumidification and can have very low humidity. Additionally, air with reduced humidity can be supplied to the indoor space through the air supply opening (G3).
  • the third air conditioning mode will be described.
  • the third air conditioning mode is selected (S320)
  • the operation of the components constituting the air conditioning unit (U3) can be controlled (S420). Specifically, the first outdoor compressor 110, the second outdoor compressor 210, the third outdoor compressor 310, the first module compressor 710, and the second module compressor 910 are operated.
  • the first module heat exchanger 730 and the second module heat exchanger 930 may each be operated as a condenser.
  • the second outdoor heat exchanger (230), the first indoor heat exchanger (421), the second indoor heat exchanger (425) (322), the third indoor heat exchanger (430), and the fourth indoor heat exchanger (435) ), the second recovery heat exchanger (440) (350), and the first module heat exchanger (730) and second module heat exchanger (930) may each be operated as an evaporator.
  • the first module heat exchanger 730 and the second module heat exchanger 930 may be configured as a plate-type heat exchanger, and therefore are condensers of the second main refrigerant and the third main refrigerant and the first regenerative refrigerant, It may be an evaporator of the regenerated refrigerant of the second regenerated refrigerant.
  • the third air conditioning mode can perform a dehumidifying and air cooling function to lower the indoor temperature.
  • the main refrigerant flow and the regenerative refrigerant flow in the third air conditioning mode are indicated by arrows
  • the first main refrigerant flow in the first air conditioning unit (U1) is shown in the form of a flow chart
  • the second main refrigerant flow and the first regenerated refrigerant in the second air conditioning unit (U2) are shown in the form of a flow chart
  • the third main refrigerant flow and the second regenerative refrigerant flow in the third air conditioning unit (U3) are shown in the form of a flow chart.
  • the first outdoor compressor (110) compresses the first main refrigerant
  • the high-pressure first main refrigerant is discharged through the first compressor discharge pipe (L101).
  • Some of the discharged high-temperature/high-pressure first main refrigerant is transferred to the first recovery heat exchanger (410), and the remaining part is transferred to the first outdoor heat exchanger (130). That is, the first recovery heat exchanger 410 and the first outdoor heat exchanger 130 can each be used as a condenser.
  • the path through which the refrigerant flows into the first recovery heat exchanger 410 may be the first high pressure pipe.
  • the first high pressure pipe may be the first compressor discharge pipe (L101), the 1-1 outdoor unit connection pipe (L103), and the 1-1 distribution connection pipe (L105).
  • the first refrigerant distribution valve 510 of the first delivery module 500 is disposed between the 1-1 outdoor unit connection pipe (L103) and the 1-1 distribution connection pipe (L105), The first refrigerant distribution valve 510 can connect them.
  • the path through which the refrigerant flows into the first outdoor heat exchanger 130 may also be the first high pressure pipe.
  • the first high pressure pipe may be the first compressor discharge pipe (L101)-1-1 outdoor heat exchange connection pipe (L102).
  • L101 first compressor discharge pipe
  • L102 first outdoor heat exchange connection pipe
  • the first main refrigerant may be supplied to the first recovery heat exchanger 410 at a flow rate greater than that of the first outdoor heat exchanger 130. For example, about 70% of the first main refrigerant may be supplied to the first recovery heat exchanger 410, and about 30% of the first main refrigerant may be supplied to the first outdoor heat exchanger 130.
  • the first main refrigerant condensed in the first recovery heat exchanger 410 is in a medium temperature/high pressure state and can be transferred to the first indoor heat exchanger 421 and the second indoor heat exchanger 425.
  • the path of the first main refrigerant flowing to the first indoor heat exchanger 421 and the second indoor heat exchanger 425 may be the first liquid pipe.
  • the first indoor unit connection pipe (L128) becomes the first liquid pipe through which the refrigerant flows to the first indoor heat exchanger 421, and the first indoor unit connection pipe (L128) - first indoor branch pipe ( L125) becomes the first liquid pipe through which the refrigerant flows to the second indoor heat exchanger (425).
  • the first indoor expansion valve 423 is disposed on the 1-1 indoor heat exchange connection pipe (L124), and the refrigerant is expanded in the first indoor expansion valve 423 in the first indoor heat exchanger 421, which is an evaporator. ) can flow.
  • the second indoor expansion valve 427 is disposed in the first-second indoor heat exchange connection pipe (L126), and the first main refrigerant is expanded in the second indoor expansion valve 427 and is used in the second indoor heat exchanger, which is an evaporator. It can flow into the group 425.
  • first indoor heat exchanger 421 and the second indoor heat exchanger 425 each function as an evaporator, they can cool/dehumidify the air inside the indoor duct (S).
  • Outdoor air (OA) that is primarily cooled/dehumidified while passing through the first indoor heat exchanger 421 may be secondarily cooled/dehumidified while passing through the second indoor heat exchanger 425.
  • the outside air (OA) passing through the first indoor heat exchanger 421 and the second indoor heat exchanger 425 is represented by a thick arrow.
  • the first main refrigerant may be supplied to the first indoor heat exchanger 421 and the second indoor heat exchanger 425 at different ratios.
  • a larger amount of first main refrigerant may be supplied to the first indoor heat exchanger 421, which is close to the first recovery heat exchanger 410, than to the second indoor heat exchanger 425. This is because a larger amount of first main refrigerant was supplied to the first recovery heat exchanger 410 than to the first outdoor heat exchanger 130 under the control of the control unit 1000.
  • about 70% of the first main refrigerant may be supplied to the first indoor heat exchanger 421, and about 30% of the first main refrigerant may be supplied to the second indoor heat exchanger 425.
  • the first indoor heat exchanger 421 and the second indoor heat exchanger 425 may be arranged side by side along the air flow direction inside the indoor duct (S). Accordingly, the first indoor heat exchanger 421 and the second indoor heat exchanger 425 can continuously cool/dehumidify the outside air (OA).
  • the outdoor air (OA) cooled by the first indoor heat exchanger 421 and the second indoor heat exchanger 425 continues to flow and is dehumidified three times while passing through the dehumidifying rotor 460, and finally, the third indoor heat exchanger 425 It is cooled/dehumidified in the 4th and 5th stages by the indoor heat exchanger 430 and the fourth indoor heat exchanger 435 to become supply air (SA), and can be supplied to the indoor space through the supply opening (G3).
  • SA supply air
  • the first main refrigerant is supplied to the first accumulator (120) through the first accumulator connection pipe (L111) and the first accumulator suction pipe (L113), and then again to the first outdoor through the first compressor suction pipe (L115). It can be sucked into the compressor 110. Therefore, the first heat exchange induction pipe (L117) - the first heat exchange connection pipe (L116) - the first accumulator connection pipe (L111) - the first accumulator suction pipe (L113) may be the first low pressure pipe.
  • the first refrigerant heat exchanger 530 is a low-temperature/low-pressure first main refrigerant discharged from the first indoor heat exchanger 421 and the second indoor heat exchanger 425, and the first outdoor heat exchanger ( The medium temperature/high pressure first main refrigerant condensed in 130) can be heat exchanged with each other.
  • the medium-temperature/high-pressure first main refrigerant condensed in the first outdoor heat exchanger (130) passes through the first refrigerant heat exchanger (530) to the first indoor heat exchanger (421) and the second indoor heat exchanger (425). Heat can be dissipated (heat exchanged) into the low-temperature/low-pressure first main refrigerant discharged from .
  • the first main refrigerant of medium temperature/high pressure can be supplied to the first indoor heat exchanger 421 and the second indoor heat exchanger 425 in the state of liquid refrigerant.
  • the first recovery heat exchanger 410 operates as a condenser and the first main refrigerant of the first recovery heat exchanger 410 flows toward the exhaust (EA). It can dissipate heat. That is, the first main refrigerant of the first recovery heat exchanger 410 can radiate heat to the exhaust EA while exchanging heat with the exhaust EA discharged through the first exhaust port G5.
  • the ventilation (RA) passes through the first recovery heat exchanger (410) and the first main refrigerant of the first recovery heat exchanger (410) radiates heat to the exhaust (EA), which is represented by a bold arrow. It is done.
  • some of the air supplied to the first recovery heat exchanger 410 is ventilation (RA) drawn from the indoor space and has a temperature lower than the outside air temperature.
  • RA ventilation
  • the exhaust air (EA) that exchanges heat with the first recovery heat exchanger (410) has a lower temperature than the outside air
  • heat dissipation of the first main refrigerant passing through the first recovery heat exchanger (410) can be performed more effectively.
  • the first main refrigerant of the first recovery heat exchanger 410 is more effectively dissipated by using the waste heat of the exhaust (EA). Accordingly, the high operating pressure of the refrigeration cycle of the first air conditioning unit (U1) is lowered, thereby improving efficiency and reducing power consumption.
  • the air that exchanges heat with the first main refrigerant of the first recovery heat exchanger 410 is ventilation (RA) supplied from indoors, so its temperature is lower than that of the outside air, and therefore heat can be dissipated smoothly without overload.
  • RA ventilation
  • the first heat recovery expansion valve 415 may be disposed in the first heat recovery connector L127 connected to the first recovery heat exchanger 410.
  • the control unit 1000 can control the flow rate of the high-temperature/high-pressure first main refrigerant supplied to the first recovery heat exchanger 410 by adjusting the opening rate of the first heat recovery expansion valve 415. Since the high-temperature/high-pressure first main refrigerant flow rate discharged from the first outdoor compressor 110 is determined, when the first main refrigerant flow rate supplied to the first recovery heat exchanger 410 is adjusted, the first outdoor heat exchanger 410 The flow rate of the first main refrigerant supplied to (130) can also be adjusted. By adjusting the refrigerant flow rate, the degree of recovery of waste heat through the first recovery heat exchanger 410 can be adjusted.
  • the first recovery heat exchanger (410) operates as a condenser and the first recovery heat exchanger (410) operates as a condenser. It is more effective for the first main refrigerant of the single recovery heat exchanger (410) to radiate heat to the ventilation (RA) than to radiate heat to the outside air.
  • the first recovery heat exchanger (410) operates as a condenser and the first recovery heat exchanger Dissipation of heat by the first main refrigerant of the unit 410 to the ventilation RA is less efficient than dissipation of heat to external air.
  • the opening rate of the first heat recovery expansion valve 415 is adjusted to reduce the flow rate of the first main refrigerant flowing into the first recovery heat exchanger 410, which is a condenser, and the first outdoor heat exchanger 130, which is another condenser. ), heat dissipation efficiency can be increased by increasing the flow rate of the first main refrigerant flowing into the system.
  • the second outdoor compressor (210) compresses the second main refrigerant, /Discharge the high-pressure second main refrigerant to the second compressor discharge pipe (L201).
  • the entire discharged high-temperature/high-pressure second main refrigerant is transferred to the first heat exchange module 700 of the first heat exchange module 700 through the second transfer module 600.
  • the first module heat exchanger 730 may be a condenser of the second main refrigerant cycle.
  • the path through which the second main refrigerant flows to the first heat exchange module 700 may be the second high pressure pipe.
  • the second high pressure pipe may be the second compressor discharge pipe (L201) - the 2-1 outdoor unit connection pipe (L203) - the 2-1 distribution connection pipe (L205).
  • the second refrigerant distribution valve 610 of the second delivery module 600 is disposed between the 2-1 outdoor unit connection pipe (L203) and the 2-1 distribution connection pipe (L205), The second refrigerant distribution valve 610 can connect them.
  • the second main outdoor valve 250 and the second sub-outdoor valve 260 can be viewed as OFF.
  • the second main refrigerant may exchange heat with the first regenerated refrigerant flowing through the first module heat exchanger (730).
  • the first regenerative heat exchanger 450 together with the first heat exchange module 700, may form a separate first regenerative refrigerant cycle that flows the first regenerative refrigerant.
  • heat generated in the first regenerative heat exchanger 450 which operates as a condenser, may be transferred to the dehumidification rotor 460.
  • the air introduced into the second external mechanism (G2), the air delivered through the second bypass (B2), and the air passing through the second regenerative heat exchanger (470) are transferred to the first regenerative heat exchanger (450). ), heat exchange occurs and the temperature may rise further.
  • the heated air can be delivered to the dehumidification rotor 460 to regenerate the dehumidification rotor 460. Accordingly, the amount of use of the regeneration heater 465 for regeneration of the dehumidification rotor 460 can be reduced, and as a result, the power consumption for driving the second air conditioning unit (U2) can be reduced.
  • the air radiated from the first regenerative heat exchanger 450 passing through the dehumidifying rotor 460 is represented by a thick arrow.
  • the first regenerative refrigerant may flow through the first regenerative refrigerant cycle composed of the first heat exchange module 700 and the first regenerative heat exchanger 450.
  • the first module compressor 710 discharges the compressed high-temperature/high-pressure first regenerative refrigerant to the discharge pipe L245 of the first module compressor 710.
  • the discharged high-temperature/high-pressure first regenerative refrigerant is transferred to the first regenerative heat exchanger 450, and the first regenerative heat exchanger 450 can condense the first regenerative refrigerant.
  • the first regenerative refrigerant radiates heat, and after dissipating heat, the first regenerative refrigerant can be converted into a medium-temperature and high-pressure liquid refrigerant. Then, the first regenerative refrigerant is delivered to the first module expansion valve 740 through the first regenerative heat exchange connection pipe (L247) and expanded, and then through the first module heat exchange connection pipe (L248) to the first module heat exchanger. It may be delivered to (730) and evaporated. The evaporated first regenerated refrigerant may be delivered to the first module accumulator through the first module accumulator suction pipe (L241).
  • the second main refrigerant and the first regenerated refrigerant passing through the first module heat exchanger 730 may exchange heat with each other.
  • the second main refrigerant may be condensed in the first module heat exchanger 730, radiating heat to the first regenerated refrigerant, and converted into a liquid phase. Accordingly, the second main refrigerant can dissipate heat more effectively, and the operating high pressure of the second main refrigerant cycle of the second air conditioning unit (U2) is lowered, improving efficiency and reducing power consumption.
  • the first regenerated refrigerant may absorb heat from the second main refrigerant flowing through the first module heat exchanger 730.
  • the operating low pressure of the first regenerative refrigerant cycle constituting the second air conditioning unit (U2) increases, thereby reducing power consumption.
  • the air discharge temperature of the first regenerative heat exchanger 450 which constitutes the first regenerative refrigerant cycle, can be increased to about 60°C or higher and used as regenerative energy for the high-temperature regenerative dehumidification rotor 460. In this way, energy efficiency can be further increased by reducing the amount of use of the low-efficiency regenerative heater 465.
  • air heated while passing through the second regenerative heat exchanger 470 constituting the third air conditioning unit (U3) may be transferred in the direction K3 of the first regenerative heat exchanger 450.
  • the air flow is represented by a thick arrow.
  • the air delivered in the direction K3 of the first regenerative heat exchanger 450 may be delivered to the dehumidifying rotor 460 in a state in which its temperature is raised again by the first regenerative heat exchanger 450.
  • the air regenerated to high temperature by the dehumidification rotor 460 may be delivered to the second recovery heat exchanger 440. Air that has passed through the second recovery heat exchanger 440 may be exhausted (EA).
  • part of the second main refrigerant condensed while exchanging heat while passing through the second module heat exchanger 930 may be transferred to the second recovery heat exchanger 440 and evaporated, and the remaining part may be transferred to the second outdoor heat exchanger. It can be transmitted and evaporated.
  • the medium-temperature/high-pressure second main refrigerant condensed in the first module heat exchanger (730) may be evaporated in the second recovery heat exchanger (440) and the second outdoor heat exchanger (230).
  • the path of the refrigerant flowing to the second recovery heat exchanger 440 and the second outdoor heat exchanger 230 may be the second liquid pipe.
  • first main connection pipe (L224) and the second heat recovery connection pipe (L225) become a second liquid pipe through which the second main refrigerant flows to the second recovery heat exchanger (440).
  • first module connection pipe (L223) - the 2-2 outdoor unit connection pipe (L222) becomes a second liquid pipe through which the second main refrigerant flows to the second outdoor heat exchanger (230).
  • the second main refrigerant of the second recovery heat exchanger (440) may absorb heat from the exhaust (EA) discharged to the outside from the indoor unit (400). At this time, since the temperature of the exhaust EA is higher than that of the external air, the amount of heat absorption may increase. Accordingly, the low operating pressure of the refrigeration cycle by the second air conditioning unit (U2) increases, thereby reducing power consumption.
  • the second recovery heat exchanger (440) utilizes the temperature of the exhaust (EA) when operating as an evaporator, thereby reducing the power consumption required to operate the refrigeration cycle of the second air conditioning unit (U2). can do.
  • the low-temperature/low-pressure second main refrigerant evaporated in the second recovery heat exchanger 440 may flow into the second transfer module 600 through the second heat exchange transfer pipe (L217).
  • the second main refrigerant that has passed through the second refrigerant heat exchanger 630 through the second heat exchange connector L216 can be sucked into the second outdoor compressor 210 through the second accumulator. Therefore, the second heat exchange transmission pipe (L217) - the second heat exchange connection pipe (L216) - the second accumulator connection pipe (L211) - the second accumulator suction pipe (L213) may be the second low pressure pipe.
  • the air that has passed through the second indoor heat exchanger 425 may flow in the direction K1 of the dehumidifying rotor 460 and be dehumidified while passing through the dehumidifying rotor 460.
  • the air dehumidified in this way can be delivered in the direction K2 of the third indoor heat exchanger 430. 12 and 14, the air passing through the dehumidifying rotor 460 is represented by a thick arrow.
  • a part of the dehumidifying rotor 460 may be disposed along the air flow direction inside the indoor duct (S). Accordingly, the dehumidification rotor 460 re-dehumidifies the outdoor air (OA) that previously passed through the first indoor heat exchanger 421 and the second indoor heat exchanger 425, so that continuous dehumidification is performed a total of three times to maintain the outdoor air.
  • the humidity of (OA) can be lowered to a very low level.
  • the third outdoor compressor 310 compresses the third main refrigerant.
  • the high-temperature/high-pressure third main refrigerant is discharged to the third compressor discharge pipe (L301).
  • Some of the discharged high-temperature/high-pressure third main refrigerant is transferred to the second module heat exchanger (930) through the third transfer module (800), and the remaining part is transferred to the three outdoor heat exchangers (330).
  • the second module heat exchanger 930 and the third outdoor heat exchanger 330 may each be used as a condenser.
  • the path through which the refrigerant flows into the second module heat exchanger 930 may be the second high pressure pipe.
  • the second high pressure pipe may be the third compressor discharge pipe (L301) - the 3-1 outdoor unit connection pipe (L303) - the 3-1 distribution connection pipe (L305).
  • the third refrigerant distribution valve 810 of the third delivery module 800 is disposed between the 3-1 outdoor unit connection pipe (L303) and the 3-1 distribution connection pipe (L305), The third refrigerant distribution valve 810 can connect them.
  • the third main refrigerant condensed in the second module heat exchanger 930 is in a medium temperature/high pressure state and can be delivered to the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435.
  • the third main refrigerant condensed by the third outdoor heat exchanger 330 passes through the third refrigerant heat exchanger 830 and is mixed with the third main refrigerant condensed in the second module heat exchanger 930. You can.
  • the third main refrigerant mixed in this way can be delivered to the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435.
  • the low-temperature/low-pressure third main refrigerant evaporated from the third and fourth indoor heat exchangers (430, 435) is flowing through the third refrigerant heat exchanger (830). Therefore, the medium-temperature/high-pressure third main refrigerant previously condensed by the third outdoor heat exchanger 330 radiates heat (heat exchange) to the low-temperature/low-pressure third main refrigerant when passing through the third refrigerant heat exchanger 830. After being converted to a liquid refrigerant, it can be mixed with the third main refrigerant condensed in the second module heat exchanger (930).
  • the path of the refrigerant flowing into the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435 may be a third liquid pipe.
  • the 3-2 outdoor unit connection pipe (L322) - the 2nd main connection pipe (L323) - the 4th heat exchange transmission pipe (L324) is connected to the 3rd indoor heat exchanger 430 and the 4th indoor heat exchanger ( 435), which becomes the third liquid pipe through which the refrigerant flows.
  • the first indoor heat exchanger 421, the second indoor heat exchanger 425, a portion of the dehumidifying rotor 460, the third indoor heat exchanger 430, and the fourth indoor heat exchanger 435 are installed in the indoor space. Inside the duct (S), they may be arranged continuously along the direction of air flow. Accordingly, the first indoor heat exchanger 421, the second indoor heat exchanger 425, a portion of the dehumidification rotor 460, the third indoor heat exchanger 430, and the fourth indoor heat exchanger 435 are The humidity of the outdoor air (OA) can be greatly reduced by continuously dehumidifying the outdoor air (OA) a total of five times.
  • the low-temperature/low-pressure third main refrigerant discharged from the third indoor heat exchanger 430 flows into the third transfer module 800 through the third heat exchange transfer pipe (L317), and the third transfer module 800 ) can be transmitted to the third refrigerant heat exchanger (830) through the third heat exchange connection pipe (L316).
  • the low-temperature/low-pressure third main refrigerant discharged from the fourth indoor heat exchanger (435) flows into the third transfer module (800) through the third-2 distribution connector (L319), and the third main refrigerant is discharged from the fourth indoor heat exchanger (435).
  • the refrigerant may be transferred to the third refrigerant heat exchanger 830 via the third refrigerant distribution valve 810.
  • the third main refrigerant that has passed through the third refrigerant heat exchanger (830) is supplied to the third accumulator (420) through the third accumulator connection pipe (L311) and the third accumulator suction pipe (L313). It can be sucked back into the third outdoor compressor (310) through the third compressor suction pipe (L315). Therefore, the 3-2 distribution connection pipe (L319) - the 3rd heat exchange connection pipe (L316) - the 3rd accumulator connection pipe (L311) - the 3rd accumulator suction pipe (L313) can be a third low pressure pipe.
  • the third refrigerant heat exchanger 830 is a low-temperature/low-pressure third main refrigerant discharged from the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435, and the third outdoor heat exchanger.
  • the medium temperature/high pressure refrigerant condensed in (330) can exchange heat with each other.
  • the medium-temperature/high-pressure refrigerant condensed in the third outdoor heat exchanger (330) passes through the third refrigerant heat exchanger (830) and is discharged from the third indoor heat exchanger (430) and the fourth indoor heat exchanger (435). It can dissipate heat in low temperature/low pressure refrigerant. Accordingly, the third main refrigerant of medium temperature/high pressure can be supplied to the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435 in the state of a liquid refrigerant.
  • the second regenerative refrigerant may flow through the second regenerative refrigerant cycle composed of the second heat exchange module 900 and the second regenerative heat exchanger 470.
  • the second module compressor 910 discharges the compressed high-temperature/high-pressure second regenerative refrigerant to the discharge pipe L345 of the second module compressor 910.
  • the discharged high-temperature/high-pressure second regenerative refrigerant is transferred to the second regenerative heat exchanger 470, and the second regenerative heat exchanger 470 can condense the second regenerative refrigerant.
  • the second regenerative refrigerant radiates heat, and after dissipating heat, the second regenerative refrigerant can be converted into a medium-temperature and high-pressure liquid refrigerant.
  • the second regenerative refrigerant may be transferred to the second module expansion valve 940 through the second regenerative heat exchange connection pipe L347 and expanded, and then transferred to the second module heat exchanger 930 to be evaporated.
  • the evaporated second regenerated refrigerant may be delivered to the second module accumulator through the second module accumulator suction pipe (L341).
  • the third main refrigerant and the second regenerative refrigerant passing through the second module heat exchanger 930 may exchange heat with each other.
  • the third main refrigerant may be condensed in the second module heat exchanger 930, radiating heat to the second regenerated refrigerant, and converted into a liquid phase. Accordingly, the third main refrigerant can dissipate heat more effectively, and the operating high pressure of the third main refrigerant cycle of the third air conditioning unit (U3) is lowered, improving efficiency and reducing power consumption.
  • the second regenerated refrigerant can absorb heat from the third main refrigerant flowing through the second module heat exchanger 930.
  • the operating low pressure of the second regenerative refrigerant cycle constituting the third air conditioning unit (U3) increases, thereby reducing power consumption.
  • the air blowing temperature of the second regenerative heat exchanger 470 which constitutes the second regenerative refrigerant cycle, can be increased to about 40°C or higher and delivered in the direction K3 to the first regenerative heat exchanger 450.
  • the air delivered in this way can be used as regenerative energy for the high-temperature regenerative dehumidifying rotor 460. Therefore, energy efficiency can be further increased by reducing the amount of use of the low-efficiency regenerative heater 465.
  • the third main refrigerant cools/dehumidifies the air while evaporating in the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435.
  • the second module heat exchanger 930 In order to evaporate the indoor heat exchanger 435, the second module heat exchanger 930 must dissipate heat while condensing the third main refrigerant.
  • the second regenerative refrigerant cycle absorbs the heat dissipation energy generated in this process, and the air discharge temperature generated when the second regenerative heat exchanger dissipates heat can be further increased. Accordingly, the amount of use of the dehumidification heater 365 can be further reduced.
  • outside air (OA) sucked in from the outside is heated while passing through the second regenerative heat exchanger 470 constituting the third air conditioning unit (U3), and the heated air is transferred to the first regenerative heat exchanger ( It can be transmitted in the direction (K3) of 450).
  • the air that previously passed through the dehumidifying rotor 460 is delivered in the direction K2 of the third indoor heat exchanger 430
  • the third indoor heat exchanger 430 and the fourth indoor heat exchanger 435 are connected to each other. It goes through in order. In this process, the air undergoes 4th and 5th dehumidification and can have very low humidity. Additionally, air with reduced humidity can be supplied to the indoor space through the air supply opening (G3).
  • FIG 16 shows a schematic configuration of a second embodiment of the air conditioner of the present invention.
  • the third air conditioning unit (U3) can be omitted. That is, the air conditioner of the second embodiment can be composed of only the first air conditioning unit (U1) and the second air conditioning unit (U2).
  • the outside air (OA) may be dehumidified three times as it passes through the first indoor heat exchanger 421, the second indoor heat exchanger 425, and the dehumidification rotor 460.
  • the second air conditioning unit (U2) may include the first heat exchange module 700.
  • the first heat exchange module 700 can flow the independent first regenerative refrigerant and exchange heat with the second main refrigerant discharged from the second outdoor compressor 210.
  • FIG. 17 shows a schematic configuration of a third embodiment of the air conditioner of the present invention.
  • the heat exchangers included in the indoor unit 400 may be two heat exchangers connected in parallel.
  • the first recovery heat exchanger 1410 may include a 1-1 recovery heat exchanger 1410a and a 1-2 recovery heat exchanger 1410b arranged in parallel.
  • the first indoor heat exchanger (1421) can also form one first indoor heat exchanger (1421) by arranging the 1-1 indoor heat exchanger (1421a) and the 1-2 indoor heat exchanger (1421b) in parallel. .
  • the air conditioner can be applied to larger buildings or factories.
  • FIGS. 18 to 20 The structure for configuring a plurality of heat exchangers in parallel like this is shown in FIGS. 18 to 20.
  • the first recovery heat exchanger 1410 is depicted as consisting of a 1-1 recovery heat exchanger 1410a and a 1-2 recovery heat exchanger 1410b.
  • the 1-1 recovery heat exchanger (1410a) and the 1-2 recovery heat exchanger (1410b) may have a structure in which they are alternately arranged in the vertical direction (intertwined coils).
  • the 1-1 recovery heat exchanger (1410a) and the 1-2 recovery heat exchanger (1410b) which are arranged alternately in this way, secure a larger area through parallel connection, and the cooling/heating/dehumidifying capacity of the air conditioner can increase.
  • the first recovery heat exchanger 1410 is depicted as consisting of a 1-1 recovery heat exchanger 1410a and a 1-2 recovery heat exchanger 1410b.
  • the 1-1 recovery heat exchanger (1410a) and the 1-2 recovery heat exchanger (1410b) may have a structure in which they are stacked in the vertical direction.
  • the 1-1 recovery heat exchanger (1410a) may be located relatively upward, and the 1-2 recovery heat exchanger (1410b) may be located below.
  • the 1-1st recovery heat exchanger (1410a) and the 1-2nd recovery heat exchanger (1410b) which are stacked together in this way, secure a larger area through parallel connection and increase the cooling/heating/dehumidification capacity of the air conditioner. can be increased.
  • the first recovery heat exchanger 1410 is depicted as consisting of a 1-1 recovery heat exchanger 1410a and a 1-2 recovery heat exchanger 1410b.
  • the 1-1 recovery heat exchanger (1410a) and the 1-2 recovery heat exchanger (1410b) may have a structure arranged to the left and right of each other along the side surface.
  • the 1-1 recovery heat exchanger (1410a) may be placed relatively on the left, and the 1-2 recovery heat exchanger (1410b) may be placed on the right.
  • the 1-1 recovery heat exchanger (1410a) and the 1-2 recovery heat exchanger (1410b) may be arranged left and right with respect to the front.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Central Air Conditioning (AREA)

Abstract

La présente invention concerne un climatiseur. La présente invention peut comprendre des unités extérieures (100, 200, 300) comprenant une pluralité de dispositifs extérieurs indépendants. Les unités extérieures (100, 200, 300) sont reliées à la pluralité de dispositifs extérieurs, forment un conduit intérieur servant à alimenter en air extérieur ou en air intérieur un espace intérieur, et un rotor de déshumidification (460), qui déshumidifie l'air dans le conduit intérieur, peut être disposé à l'intérieur. Une unité de transfert est disposée entre les unités extérieures (100, 200, 300) et une unité intérieure (400), et peut transférer un fluide frigorigène principal entre les unités extérieures (100, 200, 300) et l'unité intérieure (400). Des unités d'échange de chaleur (700, 900) peuvent être disposées entre l'unité de transfert et l'unité intérieure (400). Les unités d'échange de chaleur (700, 900) peuvent comprendre un compresseur modulaire qui comprime un fluide frigorigène régénéré qui circule indépendamment du fluide frigorigène principal, et un échangeur de chaleur modulaire dans lequel circulent le fluide frigorigène principal et le fluide frigorigène régénéré. Ici, l'échangeur de chaleur modulaire peut effectuer un échange de chaleur entre le fluide frigorigène principal et le fluide frigorigène régénéré.
PCT/KR2024/000542 2023-01-11 2024-01-11 Climatiseur Ceased WO2024151104A1 (fr)

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EP24741725.6A EP4650678A1 (fr) 2023-01-11 2024-01-11 Climatiseur

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KR10-2023-0004293 2023-01-11
KR1020230004293A KR20240112116A (ko) 2023-01-11 2023-01-11 공기조화기

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KR20250127354A (ko) * 2024-02-19 2025-08-26 엘지전자 주식회사 공조시스템

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KR20050065259A (ko) * 2003-12-24 2005-06-29 삼성전자주식회사 공기조화시스템
JP2006038293A (ja) * 2004-07-23 2006-02-09 Sanden Corp 空気調和装置
KR101061944B1 (ko) 2010-09-17 2011-09-05 (주)에이티이엔지 하이브리드 공기조화시스템 및 이를 이용한 제어방법
KR101528640B1 (ko) 2015-05-11 2015-06-29 주식회사 에이티이엔지 하이브리드 데시칸트 제습장치의 운전제어방법
KR20180093570A (ko) * 2017-02-14 2018-08-22 엘지전자 주식회사 공기조화기
KR20200135089A (ko) * 2019-05-24 2020-12-02 엘지전자 주식회사 공기조화 시스템
KR20220040220A (ko) * 2020-09-23 2022-03-30 엘지전자 주식회사 냉난방환기 멀티 공기조화기

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KR20050065259A (ko) * 2003-12-24 2005-06-29 삼성전자주식회사 공기조화시스템
JP2006038293A (ja) * 2004-07-23 2006-02-09 Sanden Corp 空気調和装置
KR101061944B1 (ko) 2010-09-17 2011-09-05 (주)에이티이엔지 하이브리드 공기조화시스템 및 이를 이용한 제어방법
KR101528640B1 (ko) 2015-05-11 2015-06-29 주식회사 에이티이엔지 하이브리드 데시칸트 제습장치의 운전제어방법
KR20180093570A (ko) * 2017-02-14 2018-08-22 엘지전자 주식회사 공기조화기
KR20200135089A (ko) * 2019-05-24 2020-12-02 엘지전자 주식회사 공기조화 시스템
KR20220040220A (ko) * 2020-09-23 2022-03-30 엘지전자 주식회사 냉난방환기 멀티 공기조화기

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See also references of EP4650678A1

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EP4650678A1 (fr) 2025-11-19

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