[go: up one dir, main page]

EP3228951A1 - Appareil à cycle de réfrigération - Google Patents

Appareil à cycle de réfrigération Download PDF

Info

Publication number
EP3228951A1
EP3228951A1 EP14907314.0A EP14907314A EP3228951A1 EP 3228951 A1 EP3228951 A1 EP 3228951A1 EP 14907314 A EP14907314 A EP 14907314A EP 3228951 A1 EP3228951 A1 EP 3228951A1
Authority
EP
European Patent Office
Prior art keywords
water
side heat
heat exchanger
heat medium
refrigerant
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.)
Granted
Application number
EP14907314.0A
Other languages
German (de)
English (en)
Other versions
EP3228951B1 (fr
EP3228951A4 (fr
Inventor
Takuya Ito
Kazuyuki Ishida
Yasushi Ookoshi
Takahito HIKONE
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP3228951A1 publication Critical patent/EP3228951A1/fr
Publication of EP3228951A4 publication Critical patent/EP3228951A4/fr
Application granted granted Critical
Publication of EP3228951B1 publication Critical patent/EP3228951B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • F25B13/00—Compression machines, plants or systems, with reversible 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
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • 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
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/004—Outdoor unit with water as a heat sink or heat source
    • 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 a refrigeration cycle apparatus.
  • One such apparatus of this technique is configured as follows, for example. Temperatures of a medium to be cooled, such as water refrigerant, circulating in a plate heat exchanger detected at the entry and exit and operation capacities of individual refrigeration circuits are used as data inputs. By being provided with a temperature estimating unit that calculates the temperature of water refrigerant at the exit of a water refrigerant passage in each use-side heat exchanging unit connected to the refrigerant circuit, the refrigeration apparatus prevents freezing of water refrigerant (see Patent Literature 1).
  • Patent Literature 1 Japanese Unexamined Patent Application Publication No. 2007-187353 (Claim 1)
  • Patent Literature 1 that includes the multiple refrigerant circuits connected to the single plate heat exchanger, failure of any refrigerant circuit causes stop of operation of the other normal refrigerant circuits.
  • An object of the invention is to overcome the above problem, and is to provide a refrigeration cycle apparatus that can continue the operation regardless of failure of any of multiple refrigerant circuits.
  • a refrigeration cycle apparatus includes: a plurality of refrigeration cycles allowing refrigerant to circulate therein, each of the refrigeration cycles comprising a compressor, a refrigerant flow switching device, an air-side heat exchanger, a pressure reducing device, and a heat medium-side heat exchanger connected in sequence with refrigerant pipes, the heat medium-side heat exchangers allowing a heat medium and the refrigerant to exchange heat with each other; a first heat medium passage to which the heat medium-side heat exchanger of one or more of the refrigeration cycles is connected; and a second heat medium passage to which the heat medium-side heat exchangers of two or more of the refrigeration cycles are connected in series along a flow of the heat medium, the first heat medium passage and the second heat medium passage being connected in parallel.
  • the refrigeration cycle apparatus includes multiple refrigeration cycles connected in series and in parallel and thus can continue the operation regardless of failure of any of the refrigerant circuits.
  • Fig. 1 is a schematic diagram illustrating an example partial configuration of a refrigeration cycle apparatus according to Embodiment 1 of the invention.
  • a heat source device 1 which constitutes a part of the refrigeration cycle apparatus, includes refrigeration cycles 2a, 2b, 2c, and 2d having a same circuit configuration and a same specification and a heat source controller 11.
  • the refrigeration cycles 2a, 2b, 2c, and 2d having an identical configuration may be collectively referred to as "refrigeration cycles 2."
  • the refrigeration cycle 2a includes a compressor 3a, a refrigerant flow switching device 4a (e.g., a four-way valve), an air-side heat exchanger 5a, a main expansion valve 7a, and a water-side heat exchanger 8a, which are connected in an annular manner with refrigerant pipes.
  • the refrigeration cycle 2a is further provided with an air-side heat exchanger fan 6a (air-sending device 6a for the air-side heat exchanger 5a) in the vicinity of the air-side heat exchanger 5a.
  • the refrigeration cycles 2b, 2c, and 2d each have the same configuration as that of the refrigeration cycle 2a.
  • the compressors 3a, 3b, 3c, and 3d suck low-temperature low-pressure refrigerant and generate high-temperature high-pressure refrigerant through compression.
  • a typical example of the compressors 3a, 3b, 3c, and 3d is an inverter compressor having a controllable capacity.
  • the compressors 3a, 3b, 3c, and 3d having an identical configuration may be collectively referred to as "compressors 3."
  • the refrigerant flow switching devices 4a, 4b, 4c, and 4d switch the flow of refrigerant upon the switching between a cooling mode and a heating mode.
  • elements having an identical configuration may be collectively referred to as, in this case, "refrigerant flow switching devices 4.”
  • the air-side heat exchangers 5a, 5b, 5c, and 5d function as condensers in the cooling mode and as evaporators in the heating mode.
  • the air-side heat exchangers 5a, 5b, 5c, and 5d allow the refrigerant and the air supplied by the air-side heat exchanger fans 6a, 6b, 6c, and 6d to exchange heat with each other, for example.
  • air-side heat exchangers 5 elements having an identical configuration may be collectively referred to as "air-side heat exchangers 5.”
  • air-side heat exchanger fans 6a, 6b, 6c, and 6d elements having an identical configuration may be collectively referred to as "air-side heat exchanger fans 6.”
  • the main expansion valves 7a, 7b, 7c, and 7d serve as pressure reducing valves or expansion valves, and decompress to expand the refrigerant.
  • a typical example of the main expansion valves 7a, 7b, 7c, and 7d is an electronic expansion valve having a controllable opening degree.
  • the main expansion valves 7a, 7b, 7c, and 7d having an identical configuration may be collectively referred to as "main expansion valves 7."
  • the heat source controller 11 receives data on the pressures and temperatures of refrigerant in the refrigeration cycles 2 and the temperatures of water (heat medium) from various sensors (not shown). The heat source controller 11 then controls individual actuators based on operational information on the heat source device 1 and instructions about an operation from a user of the refrigeration cycle apparatus, i.e., activates or inactivates the compressors 3 or controls the rotation speeds of the compressors 3, controls the opening degrees of the main expansion valves 7, and controls the rotation of the air-side heat exchanger fans 6.
  • the water-side heat exchangers 8a, 8b, 8c, and 8d allow the refrigerant flowing in the respective refrigeration cycles 2 and the water (heat medium) to exchange heat with each other.
  • the water inlets of the water-side heat exchanger 8a and the water-side heat exchanger 8b are connected in parallel with a water pipe 9a.
  • the water outlets of the water-side heat exchanger 8c and the water-side heat exchanger 8d are connected in parallel with a water pipe 9b.
  • the water outlet of the water-side heat exchanger 8a and the water inlet of the water-side heat exchanger 8c are connected in series with a water pipe 9c.
  • the water outlet of the water-side heat exchanger 8b and the water inlet of the water-side heat exchanger 8d are connected in series with a water pipe 9d.
  • the water-side heat exchangers 8a, 8b, 8c, and 8d correspond to the "heat medium-side heat exchangers" in the present invention.
  • the water pipes 9c and 9d correspond to the "first heat medium passage” and "second heat medium passage,” respectively, in the present invention.
  • elements having an same configuration may be collectively referred to as "water-side heat exchangers 8.”
  • the flow of water (heat medium) will now be described.
  • the part of the water pipe 9a outside the heat source device 1 is provided with a cold water pump 10.
  • the cold water pump 10 transfers water (heat medium) such that the water flows through the water pipe 9a and branches into the water-side heat exchanger 8a and the water-side heat exchanger 8b.
  • the water introduced in the water-side heat exchanger 8a flows through the water pipe 9c and enters the water-side heat exchanger 8c.
  • the water introduced in the water-side heat exchanger 8b flows through the water pipe 9d and enters the water-side heat exchanger 8d.
  • Embodiment 1 The water from the water-side heat exchanger 8c and the water from the water-side heat exchanger 8d join each other in the water pipe 9b and the joined water is discharged from the heat source device 1.
  • the cold water pump 10 may also be disposed inside the heat source device 1.
  • the high-temperature high-pressure gas refrigerant generated through compression in the compressor 3a exits the compressor 3a, enters the air-side heat exchanger 5a, and then exchanges heat with the air supplied by the air-side heat exchanger fan 6a to condense into liquid.
  • This high-pressure liquid refrigerant exits the air-side heat exchanger 5a, and is then decompressed in the main expansion valve 7a into two-phase gas-liquid refrigerant.
  • the refrigerant then evaporates in the water-side heat exchanger 8a serving as an evaporator and thus removes heat from water (heat medium) to generate cooled water.
  • the low-temperature low-pressure refrigerant exits the water-side heat exchanger 8a and then enters the compressor 3a.
  • the refrigeration cycles 2b, 2c, and 2d perform the cooling operation same as that of the refrigeration cycle 2a. The same holds for a defrosting operation and a heating operation described below.
  • the refrigerant flow switching device 4a switches the flow of the refrigerant from that in the cooling mode.
  • the high-temperature high-pressure gas refrigerant generated through compression in the compressor 3a exits the compressor 3a, enters the water-side heat exchanger 8a, and then exchanges heat with water (heat medium) to condense into liquid.
  • the water (heat medium) is thereby heated to a higher temperature.
  • the high-pressure liquid refrigerant exiting the water-side heat exchanger 8a is then decompressed in the main expansion valve 7a into two-phase gas-liquid refrigerant.
  • the refrigerant then evaporates in the air-side heat exchanger 5a serving as an evaporator and thus removes heat from the surrounding air to be turned into low-temperature low-pressure refrigerant.
  • the low-temperature low-pressure refrigerant exiting the air-side heat exchanger 5a then enters the compressor 3a.
  • a high humidity of the air and a low temperature equal to or lower than 0 degrees C at the heat transferring surfaces of the air-side heat exchangers 5 cause the water vapor in the air to condense and freeze and thus generate frost on the heat transferring surfaces.
  • the frost on the air-side heat exchangers 5 increases the wind resistance thereof, resulting in insufficient performance of the air-side heat exchangers 5. This problem requires a defrosting operation for melting the frost on the air-side heat exchangers 5, which needs a heat source for melting the frost.
  • a typical defrosting technique involves switching of the flow of refrigerant to the direction in the cooling mode with the refrigerant flow switching devices 4, operating the compressors 3, and then removing the frost from the air-side heat exchangers 5 by the heat of the water flowing through the water-side heat exchangers 8.
  • the water (heat medium) heated by the heating operation is cooled again by the defrosting operation.
  • such a decrease in the temperature of water (heat medium) can be reduced by the following measure.
  • the defrosting operation of the refrigeration cycle apparatus differs from the cooling operation in that the operation of the air-side heat exchanger fan 6a is halted in the defrosting mode.
  • the high-temperature high-pressure gas refrigerant generated through compression in the compressor 3a exits the compressor 3a, enters the air-side heat exchanger 5a, and then transfers its heat to the frost on the air-side heat exchanger 5a to condense into liquid.
  • This high-pressure liquid refrigerant exiting the air-side heat exchanger 5a is then decompressed in the main expansion valve 7a into two-phase gas-liquid refrigerant.
  • the refrigerant then evaporates in the water-side heat exchanger 8a serving as an evaporator and thus removes heat from water (heat medium) to generate cooled water.
  • the low-temperature low-pressure refrigerant exiting the water-side heat exchanger 8a then enters the compressor 3a.
  • the heat source device 1 is equipped with the four refrigeration cycles 2a, 2b, 2c, and 2d.
  • the heat source controller 11 can suppress a decrease in water temperature by controlling these independent four refrigeration cycles 2a, 2b, 2c, and 2d so as not to simultaneously perform defrosting operations.
  • the heat source controller 11 can reduce the decreasing time of the temperature of water (heat medium), rather than suppression of a decrease in the temperature of the water (heat medium), by conducting simultaneous defrosting operations of the four refrigeration cycles 2a, 2b, 2c, and 2d.
  • the heat source controller 11 can select either of these controls preset in the heat source controller 11.
  • Fig. 2 is a flowchart illustrating an operation of the heat source controller 11 in the defrosting mode according to Embodiment 1 of the invention. The steps of control of the heat source controller 11 illustrated in Fig. 2 will now be explained with reference to Fig. 1 .
  • the heat source controller 11 determines whether simultaneous defrosting operations of the four refrigeration cycles 2a, 2b, 2c, and 2d are available in the preliminary setting. If the simultaneous defrosting operations of the four refrigeration cycles 2a, 2b, 2c, and 2d are available; then the process goes to Step S2; otherwise the process goes to Step S4.
  • the heat source controller 11 determines whether any one or more of the four refrigeration cycles 2a, 2b, 2c, and 2d is to conduct the defrosting operation. If any one or more of the refrigeration cycles are to conduct the defrosting operation; then the process goes to Step S3; otherwise the process goes to Step S1.
  • the heat source controller 11 conducts the simultaneous defrosting operations of the four refrigeration cycles 2a, 2b, 2c, and 2d. The process then goes to Step S1.
  • the heat source controller 11 determines whether any one of the four refrigeration cycles 2a, 2b, 2c, and 2d is to conduct the defrosting operation. If any one of the refrigeration cycles is to conduct the defrosting operation; then the process goes to Step S5; otherwise the process goes to Step S1.
  • the heat source controller 11 determines whether only at least one refrigeration cycle 2 is in the defrosting mode. If only the at least one refrigeration cycle 2 is in the defrosting mode; then the process goes to Step S6; otherwise the process goes to Step S1.
  • the heat source controller 11 conducts the defrosting operation of the refrigeration cycle 2 being a target. The process then goes to Step S1.
  • the defrosting operation of one of the refrigeration cycles 2 varies the water temperature in the water-side heat exchanger 8. This variation affects the operational state of the other refrigeration cycle 2 performing the heating mode, resulting in an unstable water temperature.
  • the water-side heat exchangers 8 according to Embodiment 1 are independent from each other disposed in the respective refrigeration cycles 2a, 2b, 2c, and 2d. This configuration can reduce the effects of the refrigeration cycle 2 in the defrosting mode on the other refrigeration cycles 2 performing the heating mode, and thus can stabilize the heating operations.
  • Embodiment 1 that includes the heat source device 1 equipped with the four refrigeration cycles 2 should not be construed to limit the present invention.
  • the configuration only requires at least three refrigeration cycles 2. The same holds for Embodiments 3 and 4 described below.
  • Fig. 3 is a schematic diagram illustrating an example variation in the circuit configuration of the refrigeration cycle apparatus according to Embodiment 1 of the present invention.
  • the water pipes 9 can be rearranged. The following description focuses on an example configuration of the water pipes 9 after rearrangement in the refrigeration cycle apparatus.
  • the water inlet of the water-side heat exchanger 8a is connected with a water pipe 9h.
  • the water outlet of the water-side heat exchanger 8a and the water inlet of the water-side heat exchanger 8b are connected in series with a water pipe 9i.
  • the water outlet of the water-side heat exchanger 8b and the water inlet of the water-side heat exchanger 8d are connected in series with a water pipe 9j.
  • the water outlet of the water-side heat exchanger 8d and the water inlet of the water-side heat exchanger 8c are connected in series with a water pipe 9k.
  • the water outlet of the water-side heat exchanger 8c is connected with a water pipe 91.
  • the water-side heat exchangers 8a, 8b, 8c, and 8d are thus sequentially connected in series.
  • the cold water pump 10 transfers water (heat medium) such that the water flows through the water pipe 9h into the water-side heat exchanger 8a.
  • the water from the water-side heat exchanger 8a flows through the water pipe 9i and enters the water-side heat exchanger 8b.
  • the water from the water-side heat exchanger 8b flows through the water pipe 9j and enters the water-side heat exchanger 8d.
  • the water from the water-side heat exchanger 8d flows through the water pipe 9k and enters the water-side heat exchanger 8c.
  • the water from the water-side heat exchanger 8c flows through the water pipe 91 and is discharged from the heat source device 1.
  • the range of the flow rate of water in the heat source device 1 is defined by the conditions such as the freezing, a decrease in performance, or the restriction of oscillation due to pulsation in the water-side heat exchangers 8.
  • the heat source device 1 according to Embodiment 1 has higher maximum and minimum flow rates of water because of the bifurcation in the water pipe 9a (see Fig. 1 )
  • the heat source device 1 according to Embodiment 3 has lower maximum and minimum flow rates of water because of no bifurcation in the water pipe 9h (see Fig. 3 ).
  • the work of refrigerant pipes after the installation of a heat source device 1 accompanies the reconstruction of the high-pressure gas circuits, and thus requires large tasks, such as collection of refrigerant and other reconstructing works and procedures.
  • the water-side heat exchangers 8 are individually disposed in the respective refrigeration cycles 2. Accordingly, the configuration of the water pipes 9 in the heat source device 1 according to Embodiment 1 can be changed into the configuration of the water pipes 9 in the heat source device 1 according to Embodiment 3 and vice versa, for example, by only the rearrangement of the water pipes 9. That is, only the rearrangement of the water pipes 9 can vary the maximum and minimum flow rates of water in the water pipes 9.
  • the maximum and minimum flow rates of water in the water pipes 9 can be readily varied by only the rearrangement of the water pipes 9 without work of the refrigerant pipes in the heat source device 1.
  • Fig. 4 is a schematic diagram illustrating the configuration of the refrigeration cycle apparatus according to Embodiment 2 of the invention.
  • the basic configuration of the heat source device 1 according to Embodiment 2 is same as that of the heat source device 1 according to Embodiment 1.
  • the following description of Embodiment 2 thus focuses on the difference from Embodiment 1, i.e., the configuration of the water pipes 9.
  • the water inlets of the water-side heat exchanger 8a and the water-side heat exchanger 8b are connected in parallel with a water pipe 9e.
  • the water outlets of the water-side heat exchanger 8c and the water-side heat exchanger 8d are connected in parallel with a water pipe 9f.
  • the water outlets of the water-side heat exchanger 8a and the water-side heat exchanger 8b are connected in parallel with a water pipe 9g.
  • the water outlets of the water-side heat exchanger 8c and the water-side heat exchanger 8d are connected in parallel with the water pipe 9g.
  • the water-side heat exchanger 8a and the water-side heat exchanger 8b, which are connected in parallel, are connected in series to the water-side heat exchanger 8c and the water-side heat exchanger 8d, which are connected in parallel, with the water pipe 9g.
  • the water pipes 9e, 9f, and 9g correspond to the "heat medium passages" in the present invention.
  • the cold water pump 10 transfers water (heat medium) such that the water flows through the water pipe 9e and branches into the water-side heat exchanger 8a and the water-side heat exchanger 8b.
  • the water introduced in the water-side heat exchanger 8a and the water introduced in the water-side heat exchanger 8b join each other in the water pipe 9g.
  • the joined water then branches in the downstream part of the water pipe 9g into the water-side heat exchanger 8c and the water-side heat exchanger 8d.
  • the water from the water-side heat exchanger 8c and the water from the water-side heat exchanger 8d join each other in the water pipe 9f and the joined water is discharged from the heat source device 1.
  • the water-side heat exchangers 8 according to Embodiment 2 are individually disposed in the respective refrigeration cycles 2a, 2b, 2c, and 2d. Even if any water-side heat exchanger 8 is punctured by freezing of water, for example, the other refrigeration cycles 2 can continue the operation for the moment because of the independent water-side heat exchangers 8.
  • the configuration can also reduce the effects of the refrigeration cycle 2 in the defrosting mode on the other refrigeration cycles 2 in the heating mode, and thus can stabilize the heating operations.
  • the water from the refrigeration cycle 2a and the water from the refrigeration cycle 2b join each other in the water pipe 9g.
  • This configuration can suppress a decrease in the temperature of the water entering the refrigeration cycle 2c and the refrigeration cycle 2d and thus can stabilize the heating operations of the refrigeration cycle 2c and the refrigeration cycle 2d.
  • Embodiment 2 that includes the heat source device 1 equipped with the four refrigeration cycles 2 should not be construed to limit the invention.
  • the configuration only requires at least four refrigeration cycles 2.
  • Fig. 5 is a schematic diagram illustrating the configuration of the refrigeration cycle apparatus according to Embodiment 3 of the invention.
  • the basic configuration of the heat source device 1 according to Embodiment 4 is same as that of the heat source device 1 according to Embodiment 1.
  • the following description of Embodiment 2 thus focuses on the difference from Embodiment 1, i.e., the configuration of the water pipes 9 and additional valves 12 in the water pipes 9.
  • the water inlets of the water-side heat exchanger 8a and the water-side heat exchanger 8b are connected in parallel with a water pipe 9m.
  • the water outlets of the water-side heat exchanger 8c and the water-side heat exchanger 8d are connected in parallel with a water pipe 9n.
  • the water outlet of the water-side heat exchanger 8a and the water inlet of the water-side heat exchanger 8c are connected in series with a water pipe 9o.
  • the water outlet of the water-side heat exchanger 8b and the water inlet of the water-side heat exchanger 8d are connected in series with a water pipe 9p.
  • the water outlet of the water-side heat exchanger 8a and the water inlet of the water-side heat exchanger 8b are connected in series with a water pipe 9q.
  • the water outlet of the water-side heat exchanger 8d and the water inlet of the water-side heat exchanger 8c are connected in series with a water pipe 9r.
  • the water pipe 9m has a bifurcation 13a from which the water pipe 9m branches into the water-side heat exchanger 8a and the water-side heat exchanger 8b.
  • the water pipe 9m is provided with a valve 12a between the bifurcation 13a and the refrigerant inlet of the water-side heat exchanger 8b.
  • the water pipe 9n has a bifurcation 13b from which the water pipe 9n branches into the water-side heat exchanger 8c and the water-side heat exchanger 8d.
  • the water pipe 9n is provided with a valve 12b between the bifurcation 13b and the refrigerant outlet of the water-side heat exchanger 8d.
  • the water pipes 9q, 9r, and 9o are provided with valves 12c, 12d, and 12e, respectively. Examples of each valve 12 include a solenoid valve capable of blocking the flow of water and a flow control valve having a controllable opening degree.
  • This heat source controller 11 can vary the combination of the water pipes 9 in which water flows by switching the valves 12 depending on the operational mode of the heat source device 1.
  • the heat source controller 11 can also vary the range of the flow rate of water in the heat source device 1.
  • the heat source controller 11 can vary the combination of the water pipes 9 in which water flows and also vary the range of the flow rate of water in the heat source device 1 by switching the valves 12. That is, the range of the flow rate of water in the heat source device 1 can be varied by on-site operations of the heat source controller 11 to transmit signals to the valves 12 for switching the valves 12, without reconstruction of the water pipes 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
EP14907314.0A 2014-12-05 2014-12-05 Appareil à cycle de réfrigération Active EP3228951B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2014/082295 WO2016088262A1 (fr) 2014-12-05 2014-12-05 Appareil à cycle de réfrigération

Publications (3)

Publication Number Publication Date
EP3228951A1 true EP3228951A1 (fr) 2017-10-11
EP3228951A4 EP3228951A4 (fr) 2018-07-04
EP3228951B1 EP3228951B1 (fr) 2021-01-27

Family

ID=56091233

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14907314.0A Active EP3228951B1 (fr) 2014-12-05 2014-12-05 Appareil à cycle de réfrigération

Country Status (3)

Country Link
EP (1) EP3228951B1 (fr)
JP (1) JP6410839B2 (fr)
WO (1) WO2016088262A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210048216A1 (en) * 2018-03-02 2021-02-18 Mitsubishi Electric Corporation Air-conditioning apparatus
US11181304B2 (en) 2017-05-19 2021-11-23 Mitsubishi Electric Corporation Chilling unit and temperature control system using water circulation
US11408656B2 (en) 2018-03-07 2022-08-09 Mitsubishi Electric Corporation Heat source device and refrigeration cycle device
EP4012299A4 (fr) * 2019-08-07 2022-08-10 Mitsubishi Electric Corporation Unité de refroidissement et système de climatisation

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2578533B (en) * 2017-08-03 2021-07-28 Mitsubishi Electric Corp Refrigeration cycle apparatus
CN110617644A (zh) * 2019-10-18 2019-12-27 珠海格力节能环保制冷技术研究中心有限公司 换热系统、空调器及空调器的控制方法
JP7414586B2 (ja) * 2020-02-28 2024-01-16 住友重機械工業株式会社 極低温冷凍機用圧縮機システムおよび補助冷却装置
WO2024180660A1 (fr) * 2023-02-28 2024-09-06 三菱電機株式会社 Système d'alimentation en eau chaude

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2697376B2 (ja) * 1991-07-11 1998-01-14 ダイキン工業株式会社 二元冷凍サイクルを有する冷却装置のためのデフロスト装置
JPH05322265A (ja) * 1992-05-28 1993-12-07 Toshiba Corp 空気調和機
JPH07127954A (ja) * 1993-06-15 1995-05-19 Daikin Ind Ltd 冷凍装置
JPH07332817A (ja) * 1994-06-08 1995-12-22 Daikin Ind Ltd ヒートポンプ式冷凍装置
JP3394379B2 (ja) * 1996-01-18 2003-04-07 松下エコシステムズ株式会社 熱交ユニット及び多室型空気調和装置
JPH10267494A (ja) * 1997-03-25 1998-10-09 Mitsubishi Electric Corp 冷却装置
JP3438000B2 (ja) * 2000-08-04 2003-08-18 株式会社日立製作所 空気調和機
JP2002195609A (ja) * 2000-12-26 2002-07-10 Matsushita Electric Ind Co Ltd 冷凍装置
JP2006170505A (ja) * 2004-12-15 2006-06-29 Matsushita Electric Ind Co Ltd 空気調和機
JP5247853B2 (ja) * 2011-07-04 2013-07-24 三菱電機株式会社 空調システム
WO2013021762A1 (fr) * 2011-08-05 2013-02-14 東芝キヤリア株式会社 Système de chauffage
JP5809872B2 (ja) * 2011-08-08 2015-11-11 東芝キヤリア株式会社 加温装置
JP5931412B2 (ja) * 2011-11-22 2016-06-08 三菱重工業株式会社 ヒートポンプシステム

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11181304B2 (en) 2017-05-19 2021-11-23 Mitsubishi Electric Corporation Chilling unit and temperature control system using water circulation
US20210048216A1 (en) * 2018-03-02 2021-02-18 Mitsubishi Electric Corporation Air-conditioning apparatus
US11408656B2 (en) 2018-03-07 2022-08-09 Mitsubishi Electric Corporation Heat source device and refrigeration cycle device
EP4012299A4 (fr) * 2019-08-07 2022-08-10 Mitsubishi Electric Corporation Unité de refroidissement et système de climatisation

Also Published As

Publication number Publication date
EP3228951B1 (fr) 2021-01-27
JPWO2016088262A1 (ja) 2017-04-27
EP3228951A4 (fr) 2018-07-04
WO2016088262A1 (fr) 2016-06-09
JP6410839B2 (ja) 2018-10-24

Similar Documents

Publication Publication Date Title
EP3228951B1 (fr) Appareil à cycle de réfrigération
US9791193B2 (en) Air conditioner and method of controlling the same
US9316421B2 (en) Air-conditioning apparatus including unit for increasing heating capacity
JP6479162B2 (ja) 空気調和装置
US10006647B2 (en) Air conditioning system with distributor for a plurality of indoor units
EP3745051A1 (fr) Dispositif à cycle de réfrigération
US10852027B2 (en) Air conditioning system
AU2011357097B2 (en) Air-conditioning apparatus
EP3492839B1 (fr) Dispositif à cycle de réfrigération
US10393418B2 (en) Air-conditioning apparatus
US20120266616A1 (en) Multi-type air conditioner and method of controlling the same
EP3614070A1 (fr) Climatiseur
EP3222924B1 (fr) Dispositif de conditionnement d'air
JP2015152205A (ja) 空気調和装置
EP3379159B1 (fr) Climatiseur
JPWO2019224945A1 (ja) 冷凍サイクル装置
JP6880204B2 (ja) 空気調和装置
CN108076653B (zh) 液体调温装置及温度控制系统
US20150338120A1 (en) Air-conditioning apparatus
EP3287715B1 (fr) Appareil à cycle frigorifique
JP2014211251A (ja) 空気調和装置
US11874039B2 (en) Refrigeration cycle apparatus
EP3236168B1 (fr) Dispositif de climatisation
EP2896911B1 (fr) Appareil de climatisation
US20150211776A1 (en) Air-conditioning apparatus

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20170419

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20180604

RIC1 Information provided on ipc code assigned before grant

Ipc: F25B 49/02 20060101ALI20180528BHEP

Ipc: F25B 13/00 20060101ALI20180528BHEP

Ipc: F25B 47/02 20060101ALI20180528BHEP

Ipc: F25B 1/00 20060101AFI20180528BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20200430

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20200813

GRAJ Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTC Intention to grant announced (deleted)
INTG Intention to grant announced

Effective date: 20201022

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1358706

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210215

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602014074681

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20210127

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1358706

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210127

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210127

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210527

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210127

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210428

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210127

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210427

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210427

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210127

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210127

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210127

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210127

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210127

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210527

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602014074681

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210127

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210127

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210127

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210127

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210127

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210127

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20211028

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210127

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210127

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210127

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210127

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210527

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602014074681

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210127

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20211231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211205

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211205

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211231

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211231

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20141205

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210127

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210127

REG Reference to a national code

Ref country code: GB

Ref legal event code: 746

Effective date: 20240319

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210127

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210127

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210127

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20241104

Year of fee payment: 11