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WO2023287029A1 - Réfrigérateur et procédé de commande de fonctionnement associé - Google Patents

Réfrigérateur et procédé de commande de fonctionnement associé Download PDF

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Publication number
WO2023287029A1
WO2023287029A1 PCT/KR2022/008416 KR2022008416W WO2023287029A1 WO 2023287029 A1 WO2023287029 A1 WO 2023287029A1 KR 2022008416 W KR2022008416 W KR 2022008416W WO 2023287029 A1 WO2023287029 A1 WO 2023287029A1
Authority
WO
WIPO (PCT)
Prior art keywords
evaporator
temperature
refrigerant
heat
flow path
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/KR2022/008416
Other languages
English (en)
Korean (ko)
Inventor
김호산
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
Publication of WO2023287029A1 publication Critical patent/WO2023287029A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/002—Defroster control
    • F25D21/004—Control mechanisms
    • 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
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • F25B47/022—Defrosting cycles hot gas defrosting
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/002—Defroster control
    • F25D21/008—Defroster control by timer
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost
    • F25D21/08—Removing frost by electric heating
    • 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
    • F25B2400/04—Refrigeration circuit bypassing means
    • F25B2400/0409—Refrigeration circuit bypassing means for the evaporator
    • 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
    • F25B2400/19—Pumping down refrigerant from one part of the cycle to another part of the cycle, e.g. when the cycle is changed from cooling to heating, or before a defrost cycle is started
    • 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
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F25B2600/0251—Compressor control by controlling speed with on-off operation
    • 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
    • F25B2600/00—Control issues
    • F25B2600/11—Fan speed control
    • F25B2600/112—Fan speed control of evaporator fans
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2104—Temperatures of an indoor room or compartment
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2117—Temperatures of an evaporator

Definitions

  • the present invention relates to a refrigerator provided with a heating heat source and a hot gas flow path and an operation control method thereof.
  • a refrigerator is a home appliance provided to store various foods for a long time with cool air generated by using circulation of a refrigerant according to a refrigerating cycle.
  • one or a plurality of storage compartments for storing storage objects are partitioned from each other and provided.
  • the storage chamber receives cold air generated by a refrigeration system including a compressor, a condenser, an expander, and an evaporator, and is maintained within a set temperature range.
  • each storage compartment passes through an evaporator, and in the process, moisture contained in the cold air is deposited on the surface of the evaporator to form frost.
  • frost formed on the surface of the evaporator gradually accumulates and affects the flow of cold air passing through the evaporator. That is, as the flow of cold air passing through the evaporator worsens in proportion to the amount of frost, the heat exchange efficiency decreases.
  • the evaporator is operated for defrosting (defrosting operation) when a predetermined time elapses after operating the refrigerator or when conditions for the defrosting operation are satisfied.
  • the defrosting operation is performed using one or a plurality of defrost heaters installed in the evaporator, and when the defrosting operation is performed by the heat generated by these defrost heaters, the cooling operation for each storage compartment is stopped.
  • a defrost method using a defrost heater does not perform uniform defrost and requires more heating than necessary, which causes an increase in the temperature in the refrigerator, which adversely affects food stored in the storage compartment.
  • the present invention was made to solve various problems according to the prior art described above.
  • An object of the present invention is to improve defrosting performance by performing a heat supply operation using a heating heat source and hot gas (high temperature refrigerant) together.
  • An object of the present invention is to minimize power consumption by reducing the heating time of a heating heat source during heat supply operation, thereby improving power consumption.
  • An object of the present invention is to reduce the heat generation time of the heating heat source during the heat supply operation, thereby reducing the increase in temperature inside the furnace due to the heat generated by the heating heat source.
  • the heating heat source may generate heat after the second storage compartment having a relatively high temperature is sufficiently cooled through the flow control of the high-temperature refrigerant (hot gas) during the heat supply operation. Accordingly, power consumption generated by the heating heat source may be reduced.
  • the heating heat source may be configured to generate heat after supplying a refrigerant (hot gas) for providing heat to the first evaporator when an operating condition for providing heat of the first evaporator is satisfied. there is.
  • a refrigerant hot gas
  • the operation of the compressor may be stopped for a set time before refrigerant is supplied to the first evaporator through the hot gas flow path.
  • the cooling fan can be maintained in a stopped state even when the compressor is operated until the heat supply operation is completed.
  • the first blowing fan may be operated until the first evaporator temperature (FD) is higher than or equal to the temperature in the first storage compartment.
  • the first evaporator temperature FD may be the temperature at the outlet side of the refrigerant or the temperature at the outlet side of the cold air of the first evaporator.
  • the first blowing fan may be operated at a speed lower than the rotational speed during the cooling operation of the first storage compartment.
  • the second blowing fan can be operated when refrigerant is supplied to the first evaporator through the hot gas flow path.
  • the operation of the second blower fan may be stopped when an operation condition for providing heat to the second evaporator is satisfied.
  • operating conditions for providing heat to the second evaporator may include a condition in which refrigerant supply to the first evaporator through the hot gas flow path is stopped.
  • the operation of the second blower fan may be maintained in a stopped state until the second evaporator temperature RD is higher than or equal to the preset first end temperature.
  • the second evaporator temperature RD may be the temperature at the outlet side of the refrigerant or the temperature at the outlet side of the cold air of the second evaporator.
  • the flow path switching valve may be operated to close all flow paths until refrigerant is supplied to the first evaporator through the hot gas flow path.
  • the heating heat source may generate heat when the internal temperature of the second storage chamber satisfies the preset first temperature condition.
  • the first temperature condition for heat generation of the heating heat source may be lower than or equal to the second set reference temperature NT2.
  • the first temperature condition for heat generation of the heating heat source may be a temperature higher than the lower limit reference temperature (NT2-Diff).
  • the heating heat source may stop generating heat when the first evaporator temperature (FD) is higher than the preset first end temperature.
  • the supply of refrigerant through the hot gas flow path may be stopped when the internal temperature of the second storage chamber is lower than the lower limit reference temperature (NT2-diff).
  • the refrigerator and operation control method of the present invention when the temperature FD of the first evaporator is higher than the preset first end temperature, supply of refrigerant to the first evaporator through the hot gas flow path may be stopped.
  • the refrigerator and operation control method of the present invention configured as described above provide each of the following effects.
  • the time required for the defrosting operation is shortened because the heat supply operation is performed while the heating heat source and the hot gas (high-temperature refrigerant) are used together. In addition, power consumption for defrosting operation is reduced.
  • heat is provided using hot gas (high-temperature refrigerant) first, and then additional heat is provided as a heating heat source.
  • hot gas high-temperature refrigerant
  • additional heat is provided as a heating heat source.
  • the heating heat source when the temperature of the second storage compartment is lowered to a set temperature or less, the heating heat source generates heat. As a result, the heating time of the heating heat source is minimized.
  • heat generated by the heating source minimizes the phenomenon that affects the temperature change in the refrigerator.
  • FIG. 1 is a state diagram showing the front appearance of a refrigerator according to an embodiment of the present invention.
  • Figure 2 is a state diagram showing the appearance of the rear side of the refrigerator according to an embodiment of the present invention
  • FIG. 3 is a state diagram showing the internal structure of a refrigerator according to an embodiment of the present invention.
  • FIG. 4 is a state diagram showing a refrigeration system including a hot gas flow path of a refrigerator according to an embodiment of the present invention.
  • FIG. 5 is a perspective view illustrating a state in which a hot gas flow path and a heating source are installed in a first evaporator of a refrigerator according to an embodiment of the present invention
  • FIG. 6 is a side view illustrating a state in which a hot gas flow path and a heating source are installed in a first evaporator of a refrigerator according to an embodiment of the present invention
  • FIG. 7 is a state diagram showing an operating state of each component related to a heat supply operation of a refrigerator according to an embodiment of the present invention.
  • FIGS. 8 to 10 are state diagrams illustrating the flow of refrigerant during a cooling operation for each storage compartment of a refrigerator according to an embodiment of the present invention.
  • FIG. 11 is a flowchart illustrating a process of heat transfer operation of a refrigerator according to an embodiment of the present invention.
  • FIG. 12 is a flowchart illustrating a process of heat supply operation of a refrigerator according to an embodiment of the present invention.
  • FIG. 13 is a state diagram illustrating a flow of refrigerant in a heat supply operation of a refrigerator according to an embodiment of the present invention
  • FIG. 14 is a flow chart illustrating a process of operating a refrigerator after providing heat according to an embodiment of the present invention.
  • 15 is a graph for explaining the temperature change of the first evaporator and each storage compartment by the heat supply operation of the refrigerator according to an embodiment of the present invention.
  • FIGS. 1 to 15 a preferred embodiment of a refrigerator and an operation control method of the present invention will be described with reference to FIGS. 1 to 15 attached.
  • each direction mentioned in the description of the installation position of each component takes an installation state in actual use (the same state as in the illustrated embodiment) as an example.
  • FIG. 1 is a state diagram showing a front appearance of a refrigerator according to an embodiment of the present invention
  • FIG. 2 is a state diagram showing a rear appearance of a refrigerator according to an embodiment of the present invention
  • FIG. 3 is an embodiment of the present invention. It is a state diagram showing the internal structure of the refrigerator according to
  • the refrigerator according to the embodiment of the present invention is capable of providing heat to the first evaporator 250 using a heating heat source 310 and a high-temperature refrigerant (hot gas). .
  • the refrigerator provides heat through the hot gas flow path 320 during operation by providing heat to the first evaporator 250 so as to minimize power consumption according to the operation of the heating heat source 310. After this is performed first, the provision of heat by the heating heat source 310 is performed subsequently.
  • heat is preferentially provided to the first evaporator 250 by supplying a refrigerant (hot gas) to the hot gas flow path 320, and then removed by heat generated by the heating heat source 310. 1 This is to provide additional heat to the evaporator 250.
  • a refrigerant hot gas
  • a refrigerator according to an embodiment of the present invention includes a refrigerator body 100 .
  • the refrigerator body 100 forms the exterior of the refrigerator and is formed to provide a storage compartment inside.
  • the storage compartment is a storage space for storing stored goods
  • the refrigerator body 100 may provide a plurality of storage compartments.
  • the refrigerator body 100 may be formed to provide a first storage compartment 101 and a second storage compartment 102 .
  • the first storage compartment 101 and the second storage compartment 102 can be opened and closed by the first door 110 and the second door 120, respectively. Although not shown, the first storage compartment 101 and the second storage compartment 102 may be simultaneously opened and closed with one door, or partially opened and closed with two or more doors.
  • the first storage compartment 101 is operated to maintain the first set reference temperature NT1.
  • the first set reference temperature NT1 may be a temperature at which stored objects may be frozen.
  • the first set reference temperature NT1 may be set to a temperature of 0°C or less and -24°C or more.
  • the first set reference temperature NT1 may be set by a user. When the user does not set the first set reference temperature NT1, an arbitrarily designated temperature is used as the first set reference temperature NT1.
  • the second storage compartment 102 may be operated to maintain a temperature range different from that of the first storage compartment 101 .
  • the second storage chamber 102 may be operated to be maintained at the second set reference temperature NT2, and at this time, the second set reference temperature NT2 may be a temperature at which stored objects do not freeze. That is, the second set reference temperature NT2 may be in a higher temperature range than the first set reference temperature NT1.
  • the second set reference temperature NT2 may be set to a temperature below 32°C and above 0°C.
  • the second set reference temperature NT2 may be set higher than 32°C or equal to or lower than 0°C as needed (eg, depending on room temperature or type of storage).
  • the first storage compartment 101 is a freezing compartment and the second storage compartment 102 is a refrigerating compartment.
  • each storage chamber 101 or 102 described above is continued or stopped according to the upper or lower limit temperature of each set reference temperature NT1 or NT2.
  • the temperatures of the storage compartments 101 and 102 exceed the upper limit reference temperatures (NT1 + Diff and NT2 + Diff)
  • cold air is supplied to the corresponding storage compartments 101 and 102 .
  • the temperatures of the storage chambers 101 and 102 are lower than the lower limit reference temperatures (NT1-Diff and NT2-Diff)
  • the supply of cold air is stopped.
  • each of the storage chambers 101 and 102 can be maintained at the respective set reference temperatures NT1 and NT2.
  • a refrigerator according to an embodiment of the present invention is configured to include a refrigeration system as shown in FIG. 4 attached.
  • the cold air that can be maintained at the set reference temperatures NT1 and NT2 is supplied to each of the storage compartments 101 and 102 by the refrigeration system.
  • the refrigeration system may include a compressor 210.
  • the refrigerant is compressed by the compressor 210 .
  • the compressor 210 may be located in the machine room 103 in the refrigerator body 100 .
  • the compressor 210 is operated when the operating conditions of the respective storage chambers 101 and 102 are satisfied. For example, when the internal temperature of a storage compartment falls within the dissatisfied region (temperature exceeding NT1+Diff and NT2+Difff), it is determined that the operating condition is satisfied and the compressor 210 is operated.
  • the compressor 210 may be operated before the heat supply operation or after the heat supply operation is performed even if the operating conditions of the storage chambers 101 and 102 are not satisfied. For example, considering that the temperature of each storage compartment 101 or 102 rises rapidly when the heat supply operation is performed, the compressor 210 is operated before the heat supply operation is performed or after the heat supply operation is performed to cool the storage compartments 101 and 102. This is to keep the temperature as low as possible.
  • the compressor 210 may be configured to stop its operation for a set time until refrigerant is supplied to the first evaporator 250 through the hot gas flow path 320 when an operating condition for providing heat is satisfied. . That is, the compressor 210 provides an idle time during which the refrigerant is not supplied for a predetermined time (eg, 5 minutes) before heat is supplied using the high-temperature refrigerant (hot gas). Through this, a problem in which the heat supply operation (eg, defrosting operation) may not be performed smoothly because the compressor 210 is continuously operated for a long time is prevented.
  • a predetermined time eg, 5 minutes
  • the compressor 210 may be configured to operate during heat supply operation for the first evaporator 250 . That is, during the heat supply operation, the high-temperature refrigerant (hot gas) is supplied to the first evaporator 250 by the operation of the compressor 210 so as to provide heat to the first evaporator 250 .
  • the operation of the compressor 210 may be stopped or temporarily stopped during the heat supply operation.
  • the refrigeration system may include a condenser 220.
  • the refrigerant compressed in the compressor 210 may be condensed by the condenser 220 .
  • the condenser 220 may be located in the machine room 103 in the refrigerator body 100 .
  • the condenser 220 may be configured to have a cooling fan 221 .
  • the cooling fan 221 is operated to cool the refrigerant passing through the condenser 220 .
  • the cooling fan 221 may be interlocked with the operation of the compressor 210 during a cooling operation of at least one of the storage compartments 101 and 102 . That is, when the compressor 210 is operated, the cooling fan 221 is also operated together.
  • the operation of the cooling fan 221 may be controlled to stop during the heat supply operation for the first evaporator 250 . That is, during the heat supply operation, the operation of the cooling fan 221 is stopped so that the temperature drop of the refrigerant (hot gas) passing through the condenser 220 is prevented.
  • the cooling fan 221 may remain stopped even when the compressor 210 operates from when an operating condition for providing heat is satisfied until the heat supply operation ends.
  • the refrigeration system may include a first expander 230 and a second expander 240 .
  • the refrigerant condensed in the condenser 220 may be reduced in pressure by the first expander 230 and the second expander 240 .
  • the first expander 230 depressurizes the refrigerant flowing into the first evaporator 250 after passing through the condenser 220 .
  • the second expander 240 depressurizes the refrigerant passing through the condenser 220 and flowing into the second evaporator 260 .
  • the refrigeration system may include a first evaporator 250 and a second evaporator 260 .
  • the refrigerant reduced in pressure in the first expander 230 is evaporated by the first evaporator 250 .
  • Air (cold air) flowing through the first storage chamber 101 by the driving of the first blowing fan 281 exchanges heat with the first evaporator 250 .
  • At least a part of the first evaporator 250 may be located in the first storage chamber 101 .
  • the refrigerant reduced in pressure in the second expander 240 is evaporated by the second evaporator 260 .
  • Air (cold air) flowing through the second storage compartment 102 by the driving of the second blowing fan 291 exchanges heat with the second evaporator 260 .
  • At least a part of the second evaporator 260 may be located in the second storage chamber 102 .
  • each of the evaporators 250 and 260 may not be entirely located in each of the storage compartments 101 and 102, but may be located above or below each storage compartment, or in another storage compartment.
  • the first blowing fan 281 may be located in the first grill assembly 280 guiding the supply of cold air into the first storage compartment 101 . That is, by the operation of the first blowing fan 281, the air (cold air) in the first storage chamber 101 passes through the first evaporator 250, exchanges heat with the refrigerant passing through the first evaporator 250, and then removes it again. It can be supplied into one storage compartment 101. As a result, the temperature of the first storage chamber 101 may gradually decrease.
  • the first blowing fan 281 may be positioned above the first evaporator 250 and operated to discharge cold air cooled by passing through the first evaporator 250 toward the inside of the first storage compartment 101 .
  • the first blowing fan 281 may be positioned to face the lower side of the first evaporator 250 or the front of the first evaporator 250 .
  • the first blower fan 281 performs sequential deep cooling of each storage compartment 101 and 102 when the operating conditions for supplying heat to the first evaporator 250 are satisfied (until the internal temperature reaches the lower limit reference temperature). operation for supplying cold air).
  • the first blowing fan 281 may be operated so that cold air in the first storage compartment 101 passes through the first evaporator 250 .
  • the cold air passing through the first evaporator 250 is again supplied into the first storage chamber 101 by the blowing force of the first blowing fan 281 .
  • the operation of the first blowing fan 281 may be stopped when the first evaporator temperature FD is higher than or equal to the temperature in the first storage compartment 101 after the deep cooling.
  • the first blowing fan 281 can be operated until heat is supplied to the first evaporator 250 by a high-temperature refrigerant (hot gas) or a heating heat source. .
  • the first storage compartment 101 can be continuously cooled by the cooling power of the first evaporator 250 .
  • the first evaporator temperature (FD) is the temperature of the first evaporator 250, and may be either the temperature of the refrigerant outlet side of the first evaporator 250 or the temperature of the cold air outlet side of the first evaporator 250. .
  • the first blowing fan 281 may be controlled to additionally rotate until the heat supply operation. In this case, the rotational speed of the first blowing fan 281 may be changed more slowly.
  • the second blowing fan 291 may be located in the second grill assembly 290 guiding the supply of cold air into the second storage compartment 102 . That is, by the operation of the second blowing fan 291, the air (cold air) in the second storage chamber 102 passes through the second evaporator 260, exchanges heat with the refrigerant passing through the second evaporator 260, and then removes it again. It can be supplied into the second storage compartment 102, whereby the temperature of the second storage compartment 102 can be gradually lowered.
  • the second blowing fan 291 may be positioned above the second evaporator 260 and discharge cold air cooled by passing through the second evaporator 260 toward the inside of the second storage compartment 102 .
  • the second blowing fan 291 may be positioned below the second evaporator 260 or may be positioned opposite to the second evaporator 260 .
  • the second blowing fan 291 may be operated for sequential deep cooling of each storage compartment 101 and 102 when an operating condition for providing heat to the first evaporator 250 is satisfied. During the deep cooling, the second fan 291 may operate so that cold air from the second storage chamber 102 passes through the second evaporator 260 . The cold air passing through the second evaporator 260 is supplied back into the second storage compartment 102 by the blowing force of the second blowing fan 291 .
  • the second blower fan 291 is additionally supplied even when the operating condition for providing heat to the first evaporator 250 is satisfied and refrigerant is supplied to the first evaporator 250 through the hot gas flow path 320. can be operated. That is, even during the heat supply operation by the operation of the second blowing fan 291, the cold air in the second storage compartment 102 is passed through the second evaporator 260, the temperature is lowered, and then returned to the second storage compartment 102. can be supplied. Accordingly, the temperature of the second storage chamber 260 may decrease during the heat supply operation of the first evaporator 250 .
  • the operation of the second blowing fan 291 may be stopped when an operating condition for providing heat of the second evaporator 260 is satisfied.
  • the operating condition may include a condition in which supply of refrigerant (hot gas) to the first evaporator 250 through the hot gas flow path 320 is stopped. That is, the operation of the second blowing fan 291 may be stopped when the supply of refrigerant to the hot gas flow path 320 is stopped.
  • the condition in which the supply of refrigerant through the hot gas flow path 320 is stopped may include a case in which the first evaporator temperature FD is higher than a preset first end temperature.
  • the first end temperature may be a temperature at which sufficient heat is supplied to the first evaporator 250 even though a high-temperature refrigerant (hot gas) is no longer supplied.
  • the first end temperature may be set to a temperature higher than 5°C.
  • the condition in which the supply of refrigerant through the hot gas flow path 320 is stopped may include a case where the internal temperature R of the second storage chamber 102 reaches a satisfactory temperature.
  • the satisfactory temperature may include a temperature lower than the upper limit reference temperature (NT2+Diff).
  • the temperature may be lower than the upper limit reference temperature (NT2+Diff) and higher than the lower limit reference temperature (NT2-Diff).
  • the second blower fan 291 maintains its operation in a stopped state until the temperature RD of the second evaporator is higher than or equal to the preset second end temperature. It can be.
  • the second end temperature may be a temperature of 3° C. or higher at which defrosting of the second evaporator 260 is possible.
  • the refrigeration system may include a first flow path (F-Path) 201 .
  • the first flow path 201 is formed to guide the flow of refrigerant recovered from the condenser 220 to the compressor 210 through the first expander 230 and the first evaporator 250 . That is, the first passage 201 may be a flow path of the refrigerant for the cooling operation of the first storage chamber 101 .
  • the refrigeration system may include a second flow path (R-Path) 202 .
  • the second flow path 202 is formed to guide the flow of the refrigerant recovered from the condenser 220 to the compressor 210 through the second expander 240 and the second evaporator 260 . That is, the second passage 202 may be a flow path of the refrigerant for the cooling operation of the second storage chamber 102 .
  • the refrigeration system may include a hot gas path (H-Path) 320.
  • H-Path hot gas path
  • the hot gas passage 320 may be formed to provide high-temperature heat to a place where heat is needed.
  • the hot gas passage 320 may be formed to guide the refrigerant (hot gas) compressed by the compressor and passing through the condenser 220 . That is, the refrigerant (hot gas) guided by the hot gas passage 320 provides heat.
  • the hot gas passage 320 may be formed to guide the flow of refrigerant to the second evaporator 260 via the condenser 220 and the first evaporator 250 . That is, the hot gas passage 320 is formed so that the high-temperature refrigerant compressed by the compressor 210 passes through the condenser 220 and then passes through the first evaporator 250 to heat the first evaporator 250. It can be.
  • the hot gas passage 320 is formed so that the refrigerant (hot gas) condensed while passing through the condenser 220 is directly supplied to the first evaporator 250 without passing through the first expander 230 .
  • the hot gas passage 320 is formed such that when the refrigerant passes through the first evaporator 250 and flows into the second evaporator 260, it is supplied to the second evaporator 250 without passing through the second expander 240. .
  • the cooling fan provided in the condenser 220 may be controlled not to operate. That is, the high-temperature refrigerant passing through the compressor 210 by not operating the cooling fan can be maintained in a high-temperature state without decreasing in temperature while passing through the condenser 220 .
  • the refrigeration system may include a physical property control unit 270.
  • the physical property control unit 270 may be provided in the hot gas flow path 320 .
  • the property control unit 270 may be located between the first evaporator 250 and the second evaporator 260 in the hot gas flow path 320 .
  • the physical property control unit 270 may be formed to provide resistance to the flow of the refrigerant passing through the first evaporator 250 and flowing into the second evaporator 260 . That is, by providing resistance to the flow of the refrigerant, the physical properties of the refrigerant can be varied.
  • the physical properties of the refrigerant may include any one of temperature, flow rate, and flow rate of the refrigerant.
  • the physical property controller 270 may be formed as a conduit for reducing and expanding the refrigerant flowing into the second evaporator 260 through the first evaporator 250 of the hot gas passage 320. That is, the refrigerant condensed and liquefied while passing through the first evaporator 250 can be provided to the second evaporator 260 in a re-expanded state while passing through the property control unit 270 . As a result, a problem affecting the operation reliability of the compressor 210 due to excessive liquefaction of the refrigerant returned to the compressor 210 after passing through the second evaporator 260 can be prevented.
  • the physical property control unit 270 may be formed to have a different diameter or a different length from that of the second expander 240 . That is, the state of the refrigerant flowing into the second evaporator 260 via the first evaporator 250 and the state of the refrigerant flowing directly from the condenser 220 into the second evaporator 260 are different from each other. Accordingly, the state of the refrigerant flowing into the second evaporator 260 via the first evaporator 250 by using the property value adjusting unit 270 will be the same as the state of the refrigerant passing through the second expander 240. that made it possible
  • the physical property controller 270 and the second expander 240 may have the same diameter but different lengths. That is, the same conduit can be used in common, but refrigerants in different states can be made in the same state.
  • the physical property adjusting unit 270 may be shorter than the second expander 240 .
  • the refrigeration system may include a flow path conversion valve 330.
  • the refrigerant passing through the condenser 220 is formed to be guided through the discharge tube 203, and the first flow path 201, the second flow path 202 and the hot gas flow path 320 are the discharge tube ( 203) may be formed to be branched from each other.
  • the flow path conversion valve 330 may be installed at a portion where each flow path 205 , 206 , 230 is branched from the discharge tube 203 . That is, the refrigerant flowing into the discharge tube 203 by the operation of the flow path switching valve 330 is directed to any one of the first flow path 201, the second flow path 202, and the hot gas flow path 320. that could be supplied.
  • the flow path conversion valve 330 may be formed as a 4-way valve.
  • the flow path switching valve 330 may be operated to block supply of refrigerant to the flow paths 201 , 202 , and 320 .
  • the flow path switching valve 330 operates for a set time until refrigerant is supplied to the first evaporator 250 through the hot gas flow path 320 when the operating conditions for providing heat of the first evaporator 250 are satisfied. It can be operated to close all flow paths. That is, during the idle time of the compressor 210, the supply of refrigerant to the passages 201, 202, and 320 may be cut off.
  • the flow path switching valve 330 When the operation of the compressor 210 is stopped due to the completion of the heat supply operation for the first evaporator 250, the flow path switching valve 330 operates in the respective flow paths 201, 202, and 320 until the return operation of the first storage chamber 102 is performed. It can be operated so that the refrigerant supply to the furnace is cut off.
  • the flow path switching valve 330 controls the heat transfer through the hot gas flow path 320 regardless of the internal temperature R of the second storage compartment 102. 1 It may be operated so that the refrigerant supply to the evaporator 250 is stopped. For example, when the temperature FD of the first evaporator is higher than or equal to 5° C., supply of the high-temperature refrigerant (hot gas) may be stopped.
  • the refrigerator according to the embodiment of the present invention may include a heating source 310 .
  • the heating heat source 310 is a heat source that provides high-temperature heat together with the hot gas flow path 320 .
  • the heat provided by the heating heat source 310 or the hot gas flow path 320 may be used in various ways.
  • heat provided by the heating heat source 310 or heat provided by the hot gas flow path 320 may be used to defrost the first evaporator 250 .
  • the heating heat source 310 may be formed of a sheath heater (Sheath HTR) that generates heat by power supply.
  • Sheath HTR sheath heater
  • the heating heat source 310 may be provided at any one adjacent part of the first evaporator 250 .
  • the heating source 310 may be located below the first evaporator 250. .
  • the heating heat source 310 may be spaced apart from the lower part of the heat exchange fin 251 of the lowermost row constituting the first evaporator 250 .
  • the heating heat source 310 may pass through an area adjacent to the hot gas flow path 320 . That is, by allowing the refrigerant (hot gas) passing through the hot gas flow path 320 to be reheated while passing through the heating heat source 310, all parts of the first evaporator 250 are affected by the high-temperature refrigerant (hot gas). that made it possible
  • the heating heat source 310 may generate heat while high-temperature refrigerant (hot gas) is supplied to the first evaporator 250 through the hot gas flow path 320 . For example, after the first evaporator 250 has been defrosted to some extent by using a high-temperature refrigerant (hot gas), the heating heat source 310 generates heat to finish the defrost of the first evaporator 250.
  • high-temperature refrigerant hot gas
  • the heating heat source 310 may be configured to generate heat when a heat generating condition is satisfied.
  • the heating condition may include a case where the internal temperature R of the second storage chamber 102 satisfies a preset first temperature condition.
  • the first temperature condition may include a temperature at which the internal temperature R of the second storage chamber 102 is lower than the second set reference temperature NT2.
  • the first temperature condition may include a temperature at which the inside temperature R of the second storage compartment 102 is equal to or higher than the second lower limit reference temperature NT2-Diff.
  • the first temperature condition is a temperature equal to or higher than the second lower limit reference temperature (NT2-Diff) while the internal temperature (R) of the second storage compartment 102 is lower than the second set reference temperature (NT2). It can be.
  • the first temperature condition may be a condition in which the internal temperature R of the second storage chamber 102 is sufficiently cooled. If the refrigerator internal temperature R is lower than the second lower limit reference temperature NT2-Diff, deterioration (eg, freezing, etc.) of stored goods stored in the second storage compartment 102 may occur.
  • the heating heat source 310 may stop generating heat when the first evaporator temperature FD is higher than the preset first end temperature.
  • the first end temperature may vary according to the heating temperature of the heating heat source 310 or the period of heat supply operation (eg, defrosting operation) or room temperature.
  • the heating heat source ( The heat supply operation may be terminated without generating heat in 310).
  • the operation for each situation is performed by a controller provided for operation of the refrigerator.
  • the operation for each situation is performed by a control means on a network connected by wired or wireless communication (eg, a home network, an online service server, etc.) so as to control the controller of the refrigerator instead of the corresponding refrigerator. can also be performed.
  • Operation of the refrigerator according to an embodiment of the present invention may include a cooling step (S100).
  • the upper limit reference temperature (NT1 + Diff, NT2 + Diff) and the lower limit reference temperature (NT1-Diff, NT2-Diff) is performed by supplying cold air or stopping the supply of cold air. That is, a general cooling operation may be included in the cooling step (S100).
  • the refrigerant compressed by the operation of the compressor 210 is condensed while passing through the condenser 220 .
  • the condensed refrigerant is reduced in pressure and expanded while passing through the second expander 240 . Subsequently, the refrigerant passes through the second evaporator 260, exchanges heat with air flowing around it, flows into the compressor 210, and repeats a cycle of being compressed.
  • the air in the second storage compartment 102 passes through the second evaporator 260 and is re-supplied into the second storage compartment 102 , repeating a circulation operation.
  • the air exchanges heat with the second evaporator 260 and is supplied into the second storage compartment 102 at a lower temperature to lower the temperature in the second storage compartment 102 .
  • the internal temperature (F) of the first storage compartment 101 exceeds the upper limit reference temperature (NT1 + Diff) and reaches an unsatisfactory temperature, cold air is supplied to the first storage compartment 101 (S131). Then, when the refrigerator temperature F of the first storage compartment 101 reaches the lower limit reference temperature (NT1-Diff), the supply of cold air to the first storage compartment 101 is stopped (S132).
  • the compressor 210 and the first blowing fan 281 of the refrigeration system operate as shown in FIG. 201) through which the refrigerant flows.
  • the refrigerant compressed by the operation of the compressor 210 is condensed while passing through the condenser 220, and the condensed refrigerant is reduced in pressure and expanded while passing through the first expander 230. Subsequently, the refrigerant passes through the first evaporator 250, exchanges heat with air flowing around the refrigerant, flows into the compressor 210, and repeats a circular operation in which it is compressed.
  • the air in the first storage compartment 101 passes through the first evaporator 250 and is re-supplied into the first storage compartment 101, repeating a circulation operation.
  • the air exchanges heat with the first evaporator 250 and is supplied into the first storage compartment 101 at a lower temperature to lower the temperature in the first storage compartment 101 .
  • the operation may be performed so that cold air is preferentially supplied to one storage compartment and then to supply cold air to the other storage compartment. there is.
  • the operation may be performed such that cold air is preferentially supplied to the second storage compartment 102 to achieve a satisfactory temperature, and then cold air is supplied to the first storage compartment 101 .
  • the second storage compartment 102 is a storage compartment maintained at room temperature, the stored goods stored in the corresponding storage compartment may be sensitive to temperature changes.
  • Operation of the refrigerator according to an embodiment of the present invention may include a step of providing heat.
  • the refrigerator may not simply perform an operation for cooling each of the storage compartments 101 and 102, but may also perform an operation for heating any one component.
  • a heat supply step may be performed for a defrosting operation to remove ice.
  • Whether or not the heat providing step is satisfied can be determined in various ways.
  • whether or not the heat supply step is satisfied may be determined by checking the flow rate or flow rate of air before and after the first evaporator 250 .
  • the heat supply step for the first evaporator 250 is performed.
  • the heat providing step may include at least one control operation. This will be described in more detail for each operation.
  • the heat providing step may include a heat supply operation (S210).
  • the heat transfer operation (S210) is an operation to prevent deterioration of stored food due to a temperature increase in each storage compartment (101, 102) that may be caused by the heat transfer operation (S220) before the heat transfer operation (S220) is performed.
  • the heat transfer operation (S210) may include, for example, a process of supplying cold air into the first storage compartment 101 and the second storage compartment 102, and a process of stopping for a predetermined time after supplying the cold air.
  • the supply of cold air to each of the storage compartments 101 and 102 may be sequentially performed for each storage compartment as shown in the flowchart of FIG. 11 attached. For example, after cooling the second storage compartment 102 (S211), the first storage compartment 101 may be cooled (S212).
  • the flow path switching valve 330 selectively opens the first flow path 201 or the second flow path 202, and the first blowing fan 281 and the second blowing fan 291 are selectively operated. . If refrigerant is supplied to the first evaporator 250, the first flow path 201 is opened, the second flow path 202 and the hot gas flow path 320 are closed, and the first blowing fan 281 it works On the other hand, when refrigerant is supplied to the second evaporator 260, the second flow path 202 is opened, the first flow path 201 and the hot gas flow path 320 are closed, and the second blowing fan 291 operates. do.
  • the first blower fan 281 In the case of the first blower fan 281, it operates until the first evaporator temperature (FD) is higher than or equal to (FD ⁇ F) the temperature (first storage compartment temperature) (F) in the first storage compartment 101 (S214). It can be.
  • the supply of cold air to each of the storage compartments 101 and 102 may be performed until the internal temperatures (R and F) of each of the storage compartments 101 and 102 reach the lower limit reference temperatures (NT1-Diff and NT2-Diff).
  • a stop process (S213) is performed.
  • This pause process (S213) may be performed by maintaining the operation of the compressor 210 and the cooling fan 221 for a predetermined period of time in a stopped state.
  • the predetermined time may be set differently according to the characteristics of the refrigerator.
  • the heat providing step may include a heat providing operation (S220).
  • the heat supply operation (S220) is an operation that provides heat to the first evaporator (250).
  • the heat supply operation (S220) may be performed after the pause process (S213) of the heat supply operation (S210). If confirmed as , the heat supply operation (S220) may be performed.
  • the compressor 210 is operated to provide heat to the first evaporator 250 and simultaneously cool the second storage compartment 102, and at the same time the flow path switching valve 330 opens the hot gas flow path 320. It is performed by operating (S222) to open. That is, the high-temperature refrigerant compressed by the operation of the compressor 210 is condensed while passing through the condenser 220, and is continuously guided to pass through the first evaporator 250 through the hot gas flow path 320 and return to the first evaporator. 250 to provide heat.
  • the cooling fan 221 When the refrigerant is controlled to flow along the hot gas flow path 320, the cooling fan 221 remains in a stopped state. As a result, the high-temperature refrigerant passing through the compressor 210 may be maintained at a high temperature without decreasing in temperature while passing through the condenser 220 . Accordingly, frost frozen in the first evaporator 250 from the portion where the hot gas flow path 320 passes is gradually melted under the influence of the high-temperature refrigerant (hot gas).
  • the refrigerant (hot gas) passing through the first evaporator 250 while flowing along the hot gas flow path 320 is depressurized and expanded while passing through the property control unit 270, and then supplied to the second evaporator 260. . Then, the reduced refrigerant passes through the second evaporator 260, exchanges heat with air (cold air) in the second storage compartment 102, flows into the compressor 210, and repeats a cycle of being compressed.
  • the second blowing fan 291 may be operated. That is, the refrigerant passing through the first evaporator 250 along the hot gas flow path 320 is decompressed and expanded while passing through the property control unit 270, and then passes through the second evaporator 260, and in the process of doing so, the refrigerant passes through the first evaporator 250. 2 Heat can be exchanged with ambient air by the operation of the blowing fan 291 . At this time, the cold air flowing by the second blowing fan 291 and heat-exchanging with the second evaporator 260 is supplied to the second storage compartment 102 to cool the second storage compartment 102 . This is as shown in the attached Figure 13.
  • the second blowing fan 291 may be controlled not to operate.
  • the second storage compartment 102 is repeatedly operated to gradually lower its temperature.
  • the supply of the high-temperature refrigerant (hot gas) through the hot gas flow path 320 continues until the first evaporator temperature FD is equal to or higher than the preset first end temperature. That is, when the first evaporator temperature (FD) reaches the first end temperature (X1 ° C), the supply of the high-temperature refrigerant (hot gas) is stopped, and the first evaporator 250 is heated and the second storage compartment 102 is cooled. This ends (S224).
  • the heating heat source 310 may generate heat (S223).
  • the heating heat source 310 may generate heat when the temperature of the second storage compartment (the internal temperature of the second storage compartment) (R) satisfies a preset first temperature condition. That is, in the case of the heating heat source 310, since power consumption is greater than defrosting using a high-temperature refrigerant (hot gas), the heat amount of the high-temperature refrigerant (hot gas) is maximized to minimize the heat amount of the heating heat source 310. .
  • the first evaporator 250 defrosts while providing radiant heat from the bottom of the first evaporator 250 . That is, the first evaporator 250 is defrosted while defrosting by the high-temperature refrigerant (hot gas) and defrosting by the heating heat source 310 are simultaneously performed.
  • the high-temperature refrigerant hot gas
  • the hot gas passage 320 adjacent to the heating heat source 310 is reheated. Accordingly, sufficient heat may be provided to the first evaporator 250 until the hot gas (high-temperature refrigerant) flowing along the hot gas flow path 320 is discharged from the first evaporator 250 .
  • the heat supply operation (S220) ends when the temperature (FD) at the outlet of the refrigerant of the first evaporator (250) reaches the first end temperature (X1°C).
  • the heating heat source 310 does not generate heat, and the test operation for providing heat may be completed.
  • the stored material in the first storage compartment 101 can be melted, so heat is provided when the first end temperature (X1 ° C) is reached. It is controlled so that the trial run is completed.
  • the heating heat source 310 stops generating heat (S225), and the hot gas flow path 320 is blocked to stop supplying high-temperature refrigerant (hot gas).
  • the second blowing fan 291 is stopped and all of the passages 201, 202, and 320 are closed.
  • the compressor 210 may be stopped after an additional operation for a certain period of time for pump down (operation in which only the compressor operates with all passages closed).
  • the supply of the high-temperature refrigerant (hot gas) or the operation of the second blowing fan 291 may be stopped before the heat supply test operation is finished. For example, when the temperature R of the second storage compartment reaches the lower limit reference temperature NT2-Diff, the second blowing fan 291 may be stopped or the supply of high-temperature refrigerant (hot gas) may be stopped.
  • the heat providing step according to the above-described embodiment of the present invention may be set differently according to the room temperature.
  • the heat exchange process of the heat supply operation (S220) constituting the heat supply step as in the above-described embodiment is performed in the high-temperature temperature range. It may take precedence over the exothermic process. That is, when the indoor temperature is in the high temperature range, the first evaporator 250 may rapidly increase in temperature under the influence of the indoor temperature, so it is preferable to perform an operation capable of reducing power consumption.
  • the reference temperature range may be set to an average indoor temperature range in spring and autumn.
  • the high-temperature temperature range may be an average indoor temperature range in summer.
  • the heat providing step may include a temperature return operation (S230).
  • the temperature return operation (S230) is an operation for cooling the first storage compartment 101 and the second storage compartment 102 to a satisfactory range after defrosting the first evaporator 250.
  • the temperature return operation (S230) sequentially supplies cold air to each storage compartment (101, 102) after a rest process (S231) for a set time (eg, 3 minutes) at the end of the heat supply operation (S220). This can be done by supplying
  • an operation for cooling the first storage compartment 101 is performed (S232). That is, the flow path switching valve 330 is operated so that cold air flows through the first flow path 201, and the compressor 210 and the cooling fan 221 are operated.
  • the refrigerant flows sequentially through the compressor 210, the condenser 220, the first expander 230, and the first evaporator 250.
  • the first blowing fan 281 may operate (S233). At this time, the first blowing fan 281 may be operated from when the first evaporator temperature (FD) becomes lower than the first storage compartment temperature (F). As a result, the temperature F of the first storage compartment may gradually decrease.
  • FD first evaporator temperature
  • F first storage compartment temperature
  • defrosting primary defrosting
  • the second blowing fan 291 is maintained in an inoperative state.
  • the second blowing fan 291 since the second blowing fan 291 is not operated, the second evaporator 260 is naturally defrosted.
  • the operation of the second blower fan 291 may be stopped until the second evaporator temperature RD is equal to or higher than the first set temperature X2°C.
  • the flow path switching valve 330 is operated so that the second flow path 202 is opened (refrigerant flows through the second flow path), the second blowing fan 291 is operated, and the first blowing fan ( 281) is stopped.
  • the refrigerator of the present invention performs an operation for providing heat while the heating heat source 310 and the high-temperature refrigerant (hot gas) are used together, it is better than when only the heating heat source 310 or only the high-temperature refrigerant (hot gas) is used.
  • the time for heat supply operation is shortened.
  • heat is provided using a high-temperature refrigerant (hot gas) (for example, defrosting of the first evaporator) first, and then additional heat is provided to the heating heat source 310. It is possible to reduce power consumption by minimizing the amount of heat of the heating heat source 310 .
  • the refrigerator of the present invention is configured so that the heating heat source 310 generates heat when the temperature of the second storage compartment 102 is lowered to a set temperature or less, the heat generation time of the heating heat source 310 can be minimized.
  • the heat generation time of the heating heat source 310 is reduced during the heat supply operation, the phenomenon that affects the internal temperature change due to the heat generated by the heating heat source 310 can be minimized, and the first evaporator 250 After the heat supply operation, the internal temperature (F) of the first storage compartment 101 can be quickly normalized.
  • the temperature of the first evaporator 250 and the temperature FD of the first storage compartment gradually increase, while the temperature of the second storage compartment 102 gradually increases. It gets lower.
  • the temperature FD of the first storage compartment does not rise rapidly and may increase for a predetermined time and then quickly return to the set reference temperature NT1.
  • the refrigerator of the present invention can be implemented in various forms not shown unlike the above-described embodiments.
  • the physical property controller 270 may not exist in the hot gas flow path 320 .
  • a cooling system may include a compressor 210, a condenser 220, a first expander 230, a first evaporator 250, and a first flow path 201. That is, while having only the first storage chamber 101 , the second expander 240 , the second evaporator 260 , and the second flow path 202 may not be provided.
  • the hot gas flow path 320 guides the flow of refrigerant from the discharge tube 203 of the condenser 220 so that at least a portion passes through the first evaporator 250 without passing through the first expander 230. can be configured.
  • the flow path switching valve 330 may be operated to switch the refrigerant flow from the discharge tube 203 to one of the first flow path 201 and the hot gas flow path 320 .
  • the heating heat source 310 may provide high-temperature heat to the first evaporator 250 while generating heat by power supply.
  • a cooling system may include a compressor 210, a condenser 220, a second expander 240, a second evaporator 260, and a second flow path 202. That is, the first expander 230, the first evaporator 250, and the first flow path 201 may not be provided while having only the second storage compartment 102.
  • the hot gas flow path 320 guides the flow of refrigerant from the discharge tube 203 of the condenser 220 so that at least a portion passes through the second evaporator 260 without passing through the second expander 240. can be configured.
  • the flow path switching valve 330 may be operated to switch the refrigerant flow from the discharge tube 203 to either the second flow path 202 or the hot gas flow path 320 .
  • the heating heat source 310 may provide high-temperature heat to the second evaporator 260 while generating heat by power supply.
  • the refrigerator of the present invention may be configured such that the heating heat source 310 and the hot gas flow path 320 are used for heating the second evaporator 260 .
  • the refrigerator of the present invention may be configured such that the heating heat source 310 and the hot gas flow path 320 are used for heating components other than the first evaporator 250 . That is, it can also be applied to a structure in which the hot gas flow path 320 does not pass through the first evaporator 250 .
  • the refrigerator of the present invention may be formed such that the hot gas flow path 320 is branched from the flow path between the compressor 210 and the condenser 220 . That is, the high-temperature refrigerant passing through the compressor 210 may be formed so as to pass directly through the first evaporator 250 without passing through the condenser 220 and the first expander 230 by the hot gas flow path 320. will be.

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  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Defrosting Systems (AREA)

Abstract

Selon un réfrigérateur et un procédé de commande de fonctionnement de la présente invention, une seconde chambre de stockage ayant une température relativement élevée est suffisamment refroidie par le biais de la commande d'écoulement de gaz chaud pendant un fonctionnement en fourniture de chaleur, puis ensuite une source de chaleur de chauffage génère de la chaleur. Par conséquent, la consommation d'énergie provoquée par la source de chaleur de chauffage peut être réduite.
PCT/KR2022/008416 2021-07-12 2022-06-14 Réfrigérateur et procédé de commande de fonctionnement associé Ceased WO2023287029A1 (fr)

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Publication number Priority date Publication date Assignee Title
JP2000121233A (ja) * 1998-10-20 2000-04-28 Toshiba Corp 冷凍冷蔵庫
KR20100034442A (ko) * 2008-09-24 2010-04-01 엘지전자 주식회사 냉장고의 제어 방법
JP2014020736A (ja) * 2012-07-23 2014-02-03 Sharp Corp 冷蔵庫
CN107917562A (zh) * 2017-11-22 2018-04-17 广州芯康医疗科技有限公司 用于低温风冷制冷系统的热气和电热混合除霜系统和方法
WO2021129654A1 (fr) * 2019-12-26 2021-07-01 青岛海尔电冰箱有限公司 Réfrigérateur

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Publication number Priority date Publication date Assignee Title
KR102479532B1 (ko) 2015-07-28 2022-12-21 엘지전자 주식회사 냉장고
KR102359300B1 (ko) 2015-07-28 2022-02-08 엘지전자 주식회사 냉장고

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000121233A (ja) * 1998-10-20 2000-04-28 Toshiba Corp 冷凍冷蔵庫
KR20100034442A (ko) * 2008-09-24 2010-04-01 엘지전자 주식회사 냉장고의 제어 방법
JP2014020736A (ja) * 2012-07-23 2014-02-03 Sharp Corp 冷蔵庫
CN107917562A (zh) * 2017-11-22 2018-04-17 广州芯康医疗科技有限公司 用于低温风冷制冷系统的热气和电热混合除霜系统和方法
WO2021129654A1 (fr) * 2019-12-26 2021-07-01 青岛海尔电冰箱有限公司 Réfrigérateur

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