WO2020175832A1 - 냉장고 - Google Patents
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- WO2020175832A1 WO2020175832A1 PCT/KR2020/002078 KR2020002078W WO2020175832A1 WO 2020175832 A1 WO2020175832 A1 WO 2020175832A1 KR 2020002078 W KR2020002078 W KR 2020002078W WO 2020175832 A1 WO2020175832 A1 WO 2020175832A1
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- WIPO (PCT)
- Prior art keywords
- temperature
- freezing
- defrost
- chamber
- heater
- Prior art date
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Classifications
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- 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
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
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- 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
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
- F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
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- 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
- F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
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- 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
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/04—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in series
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- 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
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
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- 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
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
- F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
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- 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
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
- F25D11/025—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures using primary and secondary refrigeration systems
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- 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
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
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- 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
- F25D21/006—Defroster control with electronic control circuits
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- 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
- F25D21/14—Collecting or removing condensed and defrost water; Drip trays
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- 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
- F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
- F25B2321/02—Details of machines, plants or systems, using electric or magnetic effects using Peltier effects; using Nernst-Ettinghausen effects
- F25B2321/021—Control thereof
- F25B2321/0212—Control thereof of electric power, current or voltage
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- 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
- F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
- F25B2321/02—Details of machines, plants or systems, using electric or magnetic effects using Peltier effects; using Nernst-Ettinghausen effects
- F25B2321/023—Mounting details thereof
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- 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
- F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
- F25B2321/02—Details of machines, plants or systems, using electric or magnetic effects using Peltier effects; using Nernst-Ettinghausen effects
- F25B2321/025—Removal of heat
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- 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
- F25B2600/25—Control of valves
- F25B2600/2511—Evaporator distribution valves
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- 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
- F25B2700/2107—Temperatures of a Peltier element
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- 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
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- 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/061—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation through special compartments
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- 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/063—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation with air guides
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- 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/066—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply
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- 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/067—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by air ducts
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- 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
- F25D2321/00—Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
- F25D2321/14—Collecting condense or defrost water; Removing condense or defrost water
- F25D2321/144—Collecting condense or defrost water; Removing condense or defrost water characterised by the construction of drip water collection pans
Definitions
- the present invention relates to a refrigerator.
- a refrigerator is a household appliance that stores food at low temperatures, a refrigerator for storing food in a refrigerated state in the range of 3°0 Celsius, and a freezer for storing food in a frozen state in the range of -20°C. Includes.
- the cryogenic temperature can be understood as referring to a temperature in the range of -45°0 to -50°0.
- thermoelectric element TEM: 13 ⁇ 4 1110£1 furnace module
- Korean Patent Laid-Open Patent No. 10-2018-0105572 (September 28, 2018) discloses a refrigerator in the form of a cooperative that stores the storage room at a temperature lower than the indoor temperature using a thermoelectric module. .
- thermoelectric module disclosed in the preceding technology 1
- thermoelectric module is configured to cool by exchanging heat with indoor air.
- thermoelectric modules As the supply current increases, the temperature difference between the heat absorbing surface and the heating surface tends to increase to a certain level.
- the semiconductor resistance becomes As a result, the amount of heat generated by itself increases. Then, there is a problem that the heat absorbed from the heat absorbing surface cannot be quickly transferred to the heating surface.
- thermoelectric element if the heating surface of the thermoelectric element is not sufficiently cooled, a phenomenon in which the heat transferred to the heating surface flows backward toward the heat absorption surface occurs, and the temperature of the heat absorption surface increases as well.
- thermoelectric module In the case of the thermoelectric module disclosed in the preceding technology 1, since the heating surface is cooled by indoor air, there is a limit that the temperature of the heating surface cannot be lower than the indoor temperature.
- thermoelectric module In order to do so, it is necessary to increase the supply current, which causes a problem of lowering the efficiency of the thermoelectric module.
- thermoelectric module when the supply current is increased, the temperature difference between the heat absorbing surface and the heating surface increases, resulting in a decrease in the cooling power of the thermoelectric module.
- thermoelectric module since the storage chamber cooled by the thermoelectric module exists independently, the power supply to the thermoelectric module is cut off when the temperature of the storage chamber reaches a satisfactory temperature. do.
- the storage compartment has a different temperature range such as a refrigerator compartment or a freezer compartment.
- thermoelectric module In order to control the core greenhouse temperature in a structure accommodated in the refrigerating chamber, the output of the thermoelectric module and the output of the core greenhouse cooling fan cannot be controlled.
- thermoelectric module Many experiments and studies have been conducted to overcome the limitations of these thermoelectric modules and to lower the temperature of the storage chamber to a temperature lower than that of the freezer by using the thermoelectric module. As a result, there has been an attempt to attach an evaporator through which the refrigerant flows to the heating surface in order to cool the heating surface of the thermoelectric module to a low temperature.
- prior art 2 discloses only the structural content of employing an evaporator through which the refrigerant flows through the freezer expansion valve as a heat dissipation means or heat sink for cooling the heating surface of the thermoelectric element. There is no disclosure of how to control the output of the thermoelectric module according to the operating conditions.
- thermoelectric module For example, in the case of prior art 2, the refrigeration chamber evaporator and the heat sink of the thermoelectric module
- the control method of the preceding technology 2 has a disadvantage that it is difficult to apply to a system in which the freezing chamber evaporator and the heat sink are connected in series.
- prior art 2 does not disclose a specific method of how to solve the problem caused by the water vapor generated in the process of defrosting the heart greenhouse and freezer.
- the present invention aims to provide a refrigerator having a refrigerant circulation system in which a core greenhouse is accommodated in a freezer and a heat sink and a freezer evaporator are connected in series.
- a refrigerator equipped with a means to prevent the phenomenon that the moisture vapor generated during the defrosting process of the core greenhouse is deposited on the surface of the defrost water outlet connecting the core greenhouse and the freezing evaporation chamber, It aims to provide.
- a refrigerator for achieving the above object includes: a refrigerator compartment; A freezing chamber partitioned from the refrigerating chamber; A core greenhouse accommodated in the freezing chamber and partitioned from the freezing chamber; and a freezing evaporation chamber formed at a rear side of the core greenhouse.
- the refrigerator according to an embodiment of the present invention comprises the freezing evaporation chamber and the freezing chamber
- It may further include a partition wall including a grill pan for partitioning, and a shroud coupled to the rear surface of the grill fan to form a passage for supplying the freezing evaporation chamber cool to the freezing chamber.
- a refrigerator is a freezing chamber evaporator accommodated in the freezing chamber to generate cold air for cooling the freezing chamber; mounted on the shroud to supply the freezing chamber cold to the freezing chamber Freezer fan may be included.
- the refrigerator according to an embodiment of the present invention may further include a thermoelectric module, wherein the thermoelectric module includes a heat absorbing surface facing the heart greenhouse and a heat generating surface defined as a surface opposite to the heat absorbing surface. And, a cold sink in contact with the heat absorbing surface and placed at the rear of the heart greenhouse, a heat sink in contact with the heating surface and connected in series with the freezing chamber evaporator, and the heat sink, and the rear surface of the freezing evaporation chamber 2020/175832 1»(:1 ⁇ 1 ⁇ 2020/002078 Housing exposed to cold may be included.
- the refrigerator according to an embodiment of the present invention may further include a core greenhouse fan disposed in front of the heat absorbing surface to forcibly flow air inside the core greenhouse.
- the refrigerator according to an embodiment of the present invention may further include a cold sink heater disposed under the cold sink.
- the refrigerator according to an embodiment of the present invention may further include a back heater disposed on one side of the rear surface of the shroud.
- the heat sink and the freezer evaporator are connected in series, and the core greenhouse is housed inside the freezer, so that the defrost of the thermoelectric module and the freezer evaporator can be effectively performed.
- FIG. 1 is a view showing a refrigerant circulation system of a refrigerator according to an embodiment of the present invention.
- FIG. 2 is a perspective view showing the structure of a freezer chamber and a core greenhouse of a refrigerator according to an embodiment of the present invention.
- FIG. 3 is a longitudinal sectional view taken along 3-3 of FIG. 2;
- 5 is a graph showing an efficiency relationship between an input voltage and a Fourier effect.
- 6 is a graph showing a correlation between cooling power and efficiency according to voltage.
- FIG. 7 is a diagram showing a reference temperature line for controlling a refrigerator according to a fluctuation in an internal load of a warehouse.
- thermoelectric module 8 is a perspective view of a thermoelectric module according to an embodiment of the present invention.
- thermoelectric module 9 is an exploded perspective view of the thermoelectric module.
- thermoelectric module accommodation space viewed from the refrigeration evaporation chamber side.
- FIG. 11 is an enlarged sectional view showing the structure of the rear end of the core greenhouse equipped with a thermoelectric module.
- FIG. 12 is a partition portion equipped with a defrost water discharge hole clogging means according to an embodiment of the present invention 2020/175832 1»(:1/10 ⁇ 020/002078 Rear perspective view.
- FIG. 13 is an exploded perspective view of a compartment provided with the defrost water discharge hole clogging means.
- Fig. 14 shows a structure of a back heater connected to a cold sink according to another embodiment of the present invention.
- 15 is a flowchart showing a method of controlling an actual refrigeration phase operation according to an embodiment of the present invention.
- FIG. 16 is a diagram showing the operating states of components constituting the refrigeration cycle over time when the heart greenhouse and the refrigeration chamber defrost are performed.
- FIG. 17 is a flowchart showing a method of controlling a defrost operation of a freezer chamber and a core greenhouse of a refrigerator according to an embodiment of the present invention.
- thermoelectric module 18 is a graph showing the temperature change of the thermoelectric module that changes with time while the core greenhouse defrost operation is performed.
- 19 is a flowchart showing a control method for a core greenhouse defrost operation according to an embodiment of the present invention.
- Fig. 20 is a flowchart showing a control method of a refrigerator for preventing frost build-up on the inner wall of the core greenhouse during a core greenhouse defrosting operation.
- Fig. 21 is a flowchart showing a method of controlling an actual freezing phase operation according to an embodiment of the present invention.
- a storage chamber that can be cooled by a first cooling device and controlled to a predetermined temperature may be defined as the first storage chamber.
- 24724790353588 to be cooled by the second cooler and controlled to a lower temperature than the first storage room.
- a storage chamber that is cooled by a third cooler and can be controlled to a lower temperature than the second storage chamber may be defined as a third storage chamber.
- the first cooler for cooling the first storage chamber may include at least one of a first evaporator and a first thermoelectric module including a thermoelectric element.
- the first evaporator may include a refrigerating chamber evaporator to be described later.
- the second cooler for cooling the second storage chamber, a second evaporator,
- At least one of the second thermoelectric modules including a thermoelectric element may be included.
- the second evaporator may include a freezing chamber evaporator to be described later.
- the third cooler for cooling the third storage chamber may include at least one of a third thermoelectric module including a third evaporator and a thermoelectric element.
- thermoelectric module is used as a cooling means in the present specification
- it can be applied by replacing the thermoelectric module with an evaporator, for example, as follows. 2020/175832 1»(:1 ⁇ 1 ⁇ 2020/002078
- thermoelectric module or "heat absorbing surface of thermoelectric element” or “heat absorbing side of thermoelectric module” can be interpreted as “a side of evaporator or evaporator”.
- thermoelectric module [7 is (2)""
- the heat absorption side of the thermoelectric module means "cold sink of the thermoelectric module” or
- thermoelectric module means "supplying or shutting off the refrigerant with an evaporator", “controlled to open or close the switching valve", or “compressor It can be interpreted in the same sense as being controlled to be turned on or off.
- thermoelectric module Controlling the constant voltage applied to the thermoelectric module to increase or decrease means “controlling to increase or decrease the amount or flow rate of the refrigerant flowing through the evaporator”, “The opening degree of the switching valve It can be interpreted in the same meaning as “controlling to increase or decrease” and “controlling to increase or decrease the compressor output”.
- thermoelectric module Controlling the reverse voltage applied to the thermoelectric module to increase or decrease is interpreted as the same meaning as “controlling the voltage applied to the defrost heater adjacent to the evaporator to increase or decrease” Can be
- the storage room cooled by the thermoelectric module is defined as a storage room show, and the air inside the storage room show exchanges heat with the heat absorbing surface of the thermoelectric module by being located in a place adjacent to the thermoelectric module.
- Storage Room Show Pan is defined as “Storage Fan”.
- the storage compartment cooled by the cooler while configuring the refrigerator together with the storage compartment show can be defined as a “storage compartment”.
- the "cooler chamber” is defined as a space in which the cooler is located, and in the structure in which a fan for blowing cool air generated by the cooler is added, it is defined as including a space in which the fan is accommodated, and is blown by the fan.
- a structure mainly with a flow path that guides cold air to the storage room or a flow path through which defrost water is distributed it can be defined as including the above flow paths.
- a defrost heater located on one side of the cold sink can be defined as a cold sink defrost heater in order to remove frost and ice accumulated in the cold sink or its surroundings.
- a defrost heater located on one side of the heat sink can be defined as a heat sink defrost heater in order to remove frost and ice accumulated in the heat sink or its surroundings.
- a defrost heater located on one side of the cooler can be defined as a defrost heater in the cooler to remove frost or ice that has accumulated in the cooler or its surroundings.
- a defrost heater located on one side of a wall surface forming the cooler chamber may be defined as a defrost heater in the cooler chamber.
- a heater disposed on one side of the cold sink can be defined as a cold sink drain heater in order to minimize re-icing or re-frosting during the process of discharging the melted defrost water or steam from the cold sink or its surroundings.
- a heater disposed on one side of the heat sink can be defined as a heat sink drain heater in order to minimize re-icing or re-frosting during the process of discharging the melted defrost water or steam from the heat sink or its surroundings.
- a heater disposed on one side of the cooler can be defined as a cooler drain heater in order to minimize re-icing or re-freezing during the process of discharging the melted defrost water or steam from the cooler or its surroundings.
- a heater disposed on one side of the wall forming the cooler chamber is placed on one side of the wall forming the cooler chamber in order to minimize re-icing or re-frosting in the process of discharging the melted defrost water or steam from or around the wall surface forming the cooler chamber. It can be defined as a drain heater.
- the "cold sink heater” to be described below can be defined as a heater that performs at least one of the functions of the cold sink defrost heater and the cold sink drain heater.
- heat sink heater can be defined as a heater that performs at least one of the functions of the heat sink defrost heater and the heat sink drain heater.
- the “cooler heater” can be defined as a heater that performs at least one of the functions of the cooler defrost heater and the cooler drain heater.
- the "back heater” to be described below can be defined as a heater that performs at least one of the functions of the heat sink heater and the defrost heater in the cooler chamber. That is, the back heater.
- the heater can be defined as a heater that performs at least one of the functions of a heat sink defrost heater, a heater sink drain heater, and a cooler chamber defrost heater.
- the first storage chamber may include a refrigerating chamber that can be controlled by the temperature of the image by the first cooler.
- the second storage chamber may include a freezing chamber that can be controlled to a temperature below zero by the second cooler.
- the third storage chamber is cryogenic by the third cooler.
- the "operation" of the refrigerator is the operation start condition or operation input condition.
- Step (I) of judging whether or not it is satisfied step (II) in which a predetermined operation is performed when the driving input condition is satisfied, step (III) of determining whether the operation completion condition is satisfied, and operation completion If the conditions are satisfied, it can be defined as including the four operating stages, stage (IV), where the operation ends. 2020/175832 1»(:1 ⁇ 1 ⁇ 2020/002078
- control unit allows the cooling air to be supplied from the cooler of the storage compartment to cool the storage compartment. It is defined as controlling.
- the general operation may include a refrigerator compartment cooling operation, a freezer cooling operation, and a deep greenhouse cooling operation.
- the special operation may mean an operation other than an operation defined as the general operation.
- the special operation may include a defrost operation controlled to supply heat to the cooler in order to melt frost or ice deposited on the cooler due to the elapsed defrost cycle of the storage compartment.
- the above special operation corresponds to at least one of the cases in which the set time has elapsed from the point when the door of the storage room is opened and closed, or the temperature of the storage room has risen to the set temperature before the set time has elapsed. If this is satisfied, a load response operation may be further included in which cold air is supplied from the cooler to the storage compartment in order to remove the heat load penetrating the storage compartment.
- the above load response operation is a door load response operation performed to remove a load that has penetrated into the storage room after opening and closing operation of the storage room door, and the load inside the storage room when power is first applied after installing the refrigerator. It may include an initial cold start operation performed to remove the
- the defrost operation may include at least one of a refrigeration actual defrost operation, a freezing actual defrost operation, and a deep green room defrost operation.
- the upper door load response operation may include at least one of a refrigerating compartment door load response operation, a freezing compartment door load response operation, and a core greenhouse load response operation.
- the core greenhouse load response operation is performed when the load increases according to the opening of the core greenhouse door, the input conditions for the core greenhouse door load response, and when the core greenhouse is switched from the off state to the on state.
- the removal of the heart greenhouse load is performed when at least one of the initial cold start operation input conditions performed to remove the load and the post-defrost operation input conditions that begin for the first time after the core greenhouse defrost operation is completed. It can be interpreted as meaning driving for.
- WO 2020/175832 PCT/KR2020/002078 It may include judging whether at least one of the conditions for rising to a set temperature is satisfied.
- the determination of whether the conditions for inputting the initial cold start operation of the core greenhouse are satisfied is to turn on the refrigerator and turn the core greenhouse mode from off to on.
- This may include determining whether or not it has been converted.
- the judgment of whether the conditions for inputting the operation after the core temperature room defrost are satisfied is to stop the cold sink heater off, the back heater off, the reverse voltage applied to the thermoelectric module for cold sink defrost, and the reverse voltage for cold sink defrost.
- This may include stopping the constant voltage applied to the thermoelectric module for defrosting the heat sink after it is applied, raising the temperature of the housing containing the heat sink to the set temperature, and determining at least one during the actual shutdown of the freezing operation.
- the storage room including at least one of the refrigerating chamber and the freezing chamber and
- the operation can be categorized into a storage room general operation and a storage room special operation.
- the control unit can control one operation (operation is performed with priority and the other operation (pause)).
- the collision of operation is: i) when the input condition of operation A and the input condition of operation B are satisfied at the same time, and ii) operation while operation A is being performed because the input condition of operation A is satisfied.
- iii) the input condition of operation A is satisfied and a collision occurs while the input condition of operation B is satisfied and operation B is being performed.
- control unit determines the execution priority of the driving in conflict, and causes the so-called “collision control algorithm” to be executed to control the execution of the corresponding operation.
- the stopped operation B can be controlled to follow at least one of the three cases in the example below after completion of operation A.
- operation B is an operation in which the fan is driven for 10 minutes, and the operation is stopped at the point 3 minutes has elapsed after the start of operation due to a collision with operation A, whether the operation simulation input conditions are satisfied at the time operation A is completed. Judge again whether or not,
- operation B is an operation in which the fan is driven for 10 minutes, and the operation is stopped at the point 3 minutes after the start of operation due to a collision with operation A, the compressor for a remaining time of 7 minutes immediately from the time operation A is completed. Let it drive more.
- the priority of driving can be determined as follows.
- the cooling operation of the refrigerating chamber (or freezing chamber) can be prioritized.
- the cooling power lower than the maximum cooling power of the heart greenhouse cooler can be supplied from the heart greenhouse cooler to the heart greenhouse. have.
- the above cooling power may mean at least one of the cooling capacity of the cooler itself and the amount of air blown by the cooling fan located adjacent to the cooler.
- the control unit, the refrigerator compartment If the (or freezer) cooling operation and the core greenhouse cooling operation collide, the refrigeration chamber (or freezer) cooling operation is prioritized, but a voltage lower than the maximum voltage that can be applied to the thermoelectric module is input to the thermoelectric module.
- the control unit can control the refrigerating chamber door load response operation to be performed with priority.
- the control unit can control the core greenhouse door load response operation to be performed with priority.
- the control unit controls the refrigeration chamber operation and the core greenhouse door load response operation to be performed at the same time, and when the refrigerator chamber temperature reaches a specific temperature a, the core greenhouse door load It can be controlled so that the response operation is performed independently.
- 2020/175832 1» (:1 ⁇ 1 ⁇ 2020/002078
- the control unit can control to run again at the same time as the refrigeration chamber operation and the core greenhouse door load response operation move. After that, depending on the temperature of the refrigerating chamber, the operation switching process between the simultaneous trial operation of the core greenhouse and the refrigeration chamber and the single operation of the core greenhouse can be controlled to be repeatedly performed.
- control unit can control the operation to be performed in the same manner as when the refrigerating chamber operation and the core greenhouse door load response operation collide when the operation input condition of the core greenhouse load response operation is satisfied.
- the first storage chamber is a refrigerating chamber
- the second storage chamber is a freezing chamber
- the third storage chamber is limited to the case where the core greenhouse is described.
- FIG. 1 is a diagram showing a refrigerant circulation system in a refrigerator according to an embodiment of the present invention
- a refrigerant circulation system 10 includes a compressor 11 for compressing a refrigerant into a high temperature and high pressure gas refrigerant, and a refrigerant discharged from the compressor 11
- a condenser 12 that condenses into a high-temperature and high-pressure liquid refrigerant, an expansion valve that expands the refrigerant discharged from the condenser 12 into a two-phase refrigerant of low temperature and low pressure, and the refrigerant that has passed through the expansion valve is evaporated into a gas refrigerant of low temperature and low pressure.
- the refrigerant discharged from the evaporator flows into the compressor 11.
- the above components are connected to each other by a refrigerant pipe to form a closed circuit.
- the expansion valve may include a refrigerator compartment expansion valve 14 and a freezing compartment expansion valve 15.
- the refrigerant pipe is divided into two, and a refrigerant pipe divided into two.
- the refrigerating chamber expansion valve 14 and the freezer compartment expansion valve 15 are respectively connected. That is, the refrigerator compartment expansion valve 14 and the freezer expansion valve 15 are connected in parallel at the outlet of the condenser 12.
- a switching valve 13 is mounted at a point where the refrigerant pipe is divided into two at the outlet side of the condenser 12.
- the condenser 12 passes through the condenser 12 by the opening degree control operation of the switching valve 13.
- One refrigerant may flow through only one of the refrigerating compartment expansion valve (14) and the freezer compartment expansion valve (15), or divided into both sides.
- the switching valve 13 may be a three-way valve, and the flow direction of the refrigerant is determined according to the operation mode.
- one switching valve such as the three-way valve, is mounted at the outlet of the condenser 12 to It is also possible to control the flow direction of, and alternatively, a structure in which an opening/closing valve is mounted at the inlet side of the refrigerating compartment expansion valve 14 and the freezer compartment expansion valve 15 may be possible.
- the evaporator As a first example of the evaporator arrangement method, the evaporator, a refrigerating chamber evaporator 16 connected to the outlet side of the refrigerating chamber expansion valve 14, and the freezing chamber
- It may include a heat sink 24 and a freezer evaporator 17 connected in series connected to the outlet side of the expansion valve 15.
- the heat sink 24 and the freezer evaporator 17 are connected in series, and the freezer expansion valve is connected in series. After passing through the heat sink (24) 2020/175832 1»(:1 ⁇ 1 ⁇ 2020/002078 It flows into the freezing chamber evaporator (17).
- the heat sink 24 is disposed at the outlet side of the freezing chamber evaporator 17, and a structure in which the refrigerant passed through the freezing chamber evaporator 17 flows into the heat sink 24 is also possible. Put.
- the heat sink 24 is an evaporator, it is provided for the purpose of cooling the heating surface of the thermoelectric module, which will be described later, not for heat exchange with the core greenhouse cooler.
- a second refrigerant circulation system consisting of an expansion valve for cooling the refrigerator compartment, a condenser for cooling the refrigerator compartment, and a compressor for cooling the refrigerator compartment.
- the condenser and the second refrigerant circulation system constituting the first refrigerant circulation system are possible.
- the condensers constituting the condensers may be provided independently, or a condensers consisting of a single unit, but a complex condenser may be provided in which the refrigerant is not mixed.
- the refrigerant circulation system of a refrigerator having two storage chambers including a core greenhouse may be configured only with the first refrigerant circulation system.
- a condensing fan 121 is mounted in a location adjacent to the condenser 12
- a refrigerating compartment fan 161 is mounted in a location adjacent to the refrigerating compartment evaporator 16, and adjacent to the freezing compartment evaporator 17
- a freezer fan (1 unit) is installed at the location.
- a refrigerating chamber maintained at a refrigerating temperature by the cold air generated by the refrigerating chamber evaporator 16
- a freezing chamber maintained at a refrigerating temperature by the cold air generated by the freezing chamber evaporator 16
- thermoelectric module to be described later.
- a heart greenhouse maintained at a temperature of cryogenic (( ⁇ / *:) or cryogenic (111(; &62113 ⁇ 4))
- the refrigerating chamber and the freezing chamber may be disposed adjacent to each other in the vertical direction or left and right directions, and are partitioned from each other by a partition wall.
- the heart greenhouse is provided on one side of the freezing chamber.
- the present invention includes that the core greenhouse is provided on the outer side of the freezing chamber.
- the core thermal case 201 with high thermal insulation performance is used.
- the core greenhouse 202 may be partitioned from the freezing chamber.
- thermoelectric module when power is supplied, a thermoelectric element 21 showing a characteristic of absorbing heat on one side and dissipating heat on the other side, and mounted on the heat absorbing surface of the thermoelectric element 21 Cold sink ⁇ ( ⁇ ⁇ ) (22), and mounted on the heating surface of the thermoelectric element (21) 2020/175832 1»(:1 ⁇ 1 ⁇ 2020/002078 A heat sink (1 ! ⁇ ) and an insulator 23 to block heat exchange between the cold sink 22 and the heat sink may be included.
- the heat sink 24 is in contact with the heating surface of the thermoelectric element 21
- thermoelectric element 21 exchanges heat with the refrigerant flowing inside the heat sink 24. As it flows along the inside of the heat sink 24, the heat generated by the thermoelectric element 21 The refrigerant absorbing heat from the surface flows into the freezing chamber evaporator 17.
- a cooling fan may be provided in front of the cold sink 22, and since the cooling fan is disposed behind the inside of the core greenhouse, it can be defined as the core greenhouse fan 25.
- the cold sink 22 is disposed behind the inside of the heart greenhouse 202
- the cold sink 22 exchanges heat with the core greenhouse cooler. It absorbs heat through the heat absorbing surface and then functions to transfer it to the heat absorbing surface of the thermoelectric element 21. The heat transferred to the heat absorbing surface is transferred to the heating surface of the thermoelectric element 21.
- the heat sink 24 has a function of re-absorbing heat that is absorbed from the heat absorbing surface of the thermoelectric element 21 and transferred to the heating surface of the thermoelectric element 21 to release it to the outside of the thermoelectric module 20 do.
- FIG. 2 is a perspective view showing a structure of a freezing chamber and a core greenhouse of a refrigerator according to an embodiment of the present invention
- FIG. 3 is a longitudinal sectional view taken along 3-3 of FIG. 2.
- a refrigerator according to an embodiment of the present invention includes an inner case 101 defining a freezing chamber 102, and a core-temperature refrigeration unit mounted on an inner side of the freezing chamber 102 ( 200).
- the inside of the refrigerating chamber is maintained at about 3°C (: is maintained inside and outside the freezing chamber 102, the inside of the freezing chamber 102 is maintained at about -18° (: is maintained inside and outside, while the temperature inside the deep-temperature freezing unit 200), that is,
- the internal temperature of the core greenhouse 202 should be maintained at about -50°0. Therefore, to maintain the internal temperature of the core greenhouse 202 at a cryogenic temperature of -50°, the same as the thermoelectric module 20 in addition to the freezer evaporator. Additional refrigeration means are required.
- the core temperature and refrigeration unit 200 includes a core temperature case 201 forming an inner core greenhouse 202, and a core greenhouse drawer 203 that is slidingly inserted into the core temperature case 201, And a thermoelectric module 20 mounted on the rear surface of the shim-on case 201.
- the shim-on case 201 is connected to one side of the front side of the shim-on case 201, and the entire interior of the shim-on case 201 is configured as a food storage space.
- a refrigeration evaporation chamber 104 in which the evaporator 17 is accommodated is formed.
- the internal space of the inner case 101 is transferred to the refrigeration evaporation chamber 104 by the partition wall 103. It is divided into a freezing chamber 102.
- the thermoelectric module 20 is fixedly mounted on the front surface of the upper planning wall 103, and partially is accommodated in the core greenhouse 202 through the core temperature case 201.
- the heat sink 24 constituting the thermoelectric module 20 may be an evaporator connected to the freezing chamber expansion valve 15, as described above.
- a space in which the heat sink 24 is accommodated may be formed in the partition wall 103.
- thermoelectric element 21 When the rear surface of the thermoelectric element 21 is in contact with the front surface of the heat sink 24 and power is applied to the thermoelectric element 21, the rear surface of the thermoelectric element 21 becomes a heating surface.
- thermoelectric element [163] The cold sink 22 is in contact with the front surface of the thermoelectric element, and the thermoelectric
- thermoelectric element 21 When power is applied to the element 21, the front surface of the thermoelectric element 21 becomes a heat absorbing surface.
- the cold sink 22 is a heat conduction plate made of an aluminum material, and the
- a plurality of heat exchange fins extending from the front surface of the heat conduction plate may be included, and the plurality of heat exchange fins may be vertically extended and spaced apart in a horizontal direction.
- the cold sink 22 is interpreted as a heat transfer member including the housing as well as the heat conductor. This applies equally to the heat sink 22, so that the heat sink 22 should be interpreted as a heat transfer member including a housing when a housing is provided, as well as a heat conductor consisting of a heat conduction plate and heat exchange fins. do.
- the core greenhouse fan 25 is disposed in front of the cold sink 22, the
- thermoelectric element [167] Hereinafter, the efficiency and cooling power of the thermoelectric element will be described.
- thermoelectric module 20 can be defined as a coefficient of performance (C0P), and the efficiency equation is as follows.
- thermoelectric module 20 can be defined as follows.
- L thickness of thermoelectric element: distance between heat absorbing surface and heating surface
- thermoelectric element [181] A :Area of thermoelectric element
- Tc temperature of the heat absorbing surface of the thermoelectric element
- the first term on the right can be defined as the Peltier Effect, and the amount of heat transferred between both ends of the heat absorbing surface and the heating surface due to the voltage difference.
- the Peltier effect is a current function and increases in proportion to the supply current.
- thermoelectric element acts as a resistance
- the resistance can be regarded as a constant, it can be said that voltage and current are in a proportional relationship, that is, if the voltage applied to the thermoelectric element 21 increases, the current also increases. Therefore, the Peltier effect can be seen as a current function. It can also be seen as a function of voltage.
- the cooling power can also be seen as a function of current or voltage.
- the effect acts as a plus effect that increases the cooling power; that is, when the supply voltage increases, the Peltier effect increases and the cooling power increases.
- the Joule effect means the effect of generating heat when current is applied to the resistor. In other words, since heat is generated when power is supplied to the thermoelectric element, this acts as a negative effect of reducing the cooling power. Therefore, as the voltage supplied to the thermoelectric element increases, the Joule effect increases, resulting in lowering the cooling power of the thermoelectric element. Bring it.
- the Fourier effect means an effect of heat transfer due to heat conduction when a temperature difference occurs on both sides of a thermoelectric element.
- the thermoelectric element includes a heat absorbing surface and a heating surface made of a ceramic substrate, and a semiconductor disposed between the heat absorbing surface and the heating surface.
- a voltage is applied to the thermoelectric element, a temperature difference occurs between the heat absorbing surface and the heating surface.
- the heat absorbed through the heat absorbing surface passes through the semiconductor and is transferred to the heating surface.
- heat flows back from the heating surface to the heat absorbing surface due to heat conduction. Occurs, and this is called the Fourier effect.
- the Fourier effect is a negative effect that lowers the cooling power.
- 2020/175832 1»(:1 ⁇ 1 ⁇ 2020/002078 works.
- the temperature difference between the heating surface and the heat absorbing surface of the thermoelectric element (13 ⁇ 4- ⁇ ) that is, the value increases and the cooling power is reduced. It has a degrading effect.
- the Fourier effect can be defined as a function of the temperature difference between the heat absorbing surface and the heat generating surface, i.e.
- thermoelectric element As the supply voltage (or current) increases, the cooling power increases, which can be explained by the above cooling power equation. Since the value is fixed, it becomes a constant. Since the above value for each standard of the thermoelectric element is determined, it is possible to set an appropriate standard for the thermoelectric element according to the required value.
- Peltier effect can be seen as a first-order function of voltage (or current) and a Joule effect, that can be seen as a second-order function of voltage (or current).
- the increase is greater than the increase of the Joule effect, which is the second function of voltage, and consequently, the cooling power increases.
- the function of the Joule effect is close to a constant, so that the cooling power approaches the linear function of the voltage. It shows the form of doing.
- the supply voltage is in the range of about 30 to 40 ⁇ , more
- the cooling power is maximum when it is about 35 ⁇ . Therefore, if only the cooling power is considered, it can be said that it is good to have a voltage difference within the range of 30 to 40 ⁇ in the thermoelectric element.
- 5 is a graph showing an efficiency relationship for an input voltage and a Fourier effect.
- the efficiency C0P is a function of not only the cooling power but also the input power, and the input Pe becomes a function of V 2 when the resistance of the thermoelectric element 21 is considered as a constant.
- the cooling power is V 2 When divided, the efficiency can eventually be expressed as the Peltier effect-Fourier effect.
- 6 is a graph showing a correlation between cooling power and efficiency according to voltage.
- thermoelectric device with an AT of 30 O C
- the efficiency of the thermoelectric device is the highest within the range of approximately 12V to 17V in the voltage difference applied to the thermoelectric device.
- the cooling power continues to increase within the range of. Therefore, considering the cooling power together, a voltage difference of at least 12V or more is required, and when the voltage difference is 14V, it can be seen that the efficiency is maximum.
- FIG. 7 is a diagram showing a reference temperature line for controlling a refrigerator according to a fluctuation in an internal load of a warehouse.
- the set temperature of each storage room is defined as a notch temperature.
- the reference temperature line may be expressed as a critical temperature line.
- the lower reference temperature line is the reference temperature line that separates the satisfaction and dissatisfaction temperature regions. Therefore, the region below the lower reference temperature line (which is defined as a satisfaction region or a satisfaction region, and Priority area (satisfied with blood and silver) It can be defined as a section or an area of dissatisfaction.
- the upper reference temperature line is a reference temperature line that divides the dissatisfied temperature region and the upper limit temperature region. Therefore, the upper reference temperature line region (C) can be defined as an upper limit region or an upper limit section, and special operation It can be seen as an area.
- the lower reference temperature line can be defined as either a case to be included in a satisfaction temperature range or a case to be included in a dissatisfaction temperature range.
- the upper reference temperature line can be defined as one of a case to be included in the unsatisfactory temperature range and a case to be included in the upper limit temperature range.
- Figure 7 (a) shows the reference temperature line for the refrigerator control according to the temperature change of the refrigerator compartment
- the notch temperature (N1) of the refrigerator compartment is set to the temperature of the image.
- the first temperature difference (dl) is a temperature value that is increased or decreased from the notch temperature (N1) of the refrigerating chamber, and defines a temperature section in which the refrigerating chamber temperature is considered to be maintained at the notch temperature (N1), which is a set temperature. It can be defined as a control differential or a control diffetial temperature, which can be approximately 1.5 days.
- d2 may be 4.5 O C.
- the first dissatisfaction critical temperature may be defined as the upper input temperature.
- the internal temperature of the chamber is the first dissatisfaction threshold
- the second dissatisfaction temperature (N14) is lower than the first dissatisfaction temperature (N13),
- the third temperature difference d3 may be 3.0 O C.
- the second unsatisfactory threshold temperature N14 may be defined as an upper limit release temperature.
- the compressor is operated after adjusting the cooling power of the compressor so that the inside temperature reaches the second satisfactory critical temperature (N12). 2020/175832 1»(:1 ⁇ 1 ⁇ 2020/002078 stops.
- the shape of the reference temperature line for freezer temperature control is the same as the shape of the reference temperature line for refrigerator room temperature control, but the amount of temperature change increasing or decreasing from the notch temperature word2) and the notch temperature word2) ⁇ 1 ⁇ 2 ⁇ 3 )To the notch temperature of this refrigerator compartment) and temperature
- the freezing chamber notch temperature word 2) may be -18°0 as described above, but
- control differential temperature (1) which defines the temperature range that is considered to be maintained at the set temperature, the notch temperature word2), can be 2 days.
- the special operation algorithm is terminated when the freezer temperature drops to the second dissatisfaction threshold temperature (upper limit release temperature) 24), which is lower than the first dissatisfaction temperature word 23) by the third temperature difference 3). Adjust the compressor cooling power so that the temperature of the freezer is lowered to the second satisfaction critical temperature 22).
- the reason the temperature line is applied is because the core greenhouse is inside the freezing chamber.
- the first and second satisfaction critical temperatures and the first and second unsatisfactory critical temperatures are also critical for freezer temperature control.
- the temperature is set equal to 21 22 23 24).
- FIG. 7 is a diagram showing a reference temperature line for controlling a refrigerator according to a change in the heart greenhouse temperature in a state where the heart greenhouse mode is turned on.
- the core greenhouse notch temperature word 3) corresponds to the heat absorbing surface temperature of the thermoelectric element (21)
- the freezing chamber notch temperature word 2) corresponds to the heating surface temperature of the thermoelectric element (21). have.
- the temperature of the heating surface of the thermoelectric element (21) in contact with the sink (24) is maintained at least at a temperature corresponding to the temperature of the refrigerant that has passed through the freezer expansion valve. Therefore, the temperature difference between the heat absorbing surface and the heating surface of the thermoelectric element, i.e.! Becomes 32 ⁇ (:.
- control differential temperature (B) which defines the temperature range in which the core greenhouse is considered to be maintained at the set temperature, which is the notch temperature 3), is higher than the freezer freezer control differential temperature: 1). It can be set, for example, it can be 3 ⁇ (:.
- the second temperature difference ⁇ 12) can be 5 (:).
- the second temperature difference in the core greenhouse is higher than 12) the second temperature difference in the freezing chamber is 2).
- the gap between the first dissatisfaction critical temperature word 33) for the deep greenhouse temperature control and the deep greenhouse notch temperature word 3) is the first dissatisfaction critical temperature word 23) and the freezing chamber notch temperature word for freezer temperature control. 2) It is set larger than the interval.
- thermoelectric module 8 is a perspective view of a thermoelectric module according to an embodiment of the present invention
- FIG. 9 is an exploded perspective view of the thermoelectric module.
- thermoelectric module 20 according to the embodiment of the present invention, as described above, the thermoelectric element 21, the cold contacting the heat absorbing surface of the thermoelectric element 21
- a sink 22, a heat sink 24 in contact with the heating surface of the thermoelectric element 21, and an insulating material 23 for blocking heat transfer between the cold sink 22 and the heat sink 24 may be included.
- thermoelectric module 20 may further include a core greenhouse fan 25 disposed in front of the cold sink 22.
- thermoelectric module 20 may further include a defrost sensor 26 mounted on a heat exchange fin of the cold sink 22 to sense the temperature of the cold sink 22.
- the defrost sensor ( 26) detects the surface temperature of the cold sink 22 during the defrosting process and transmits it to the control unit, so that the control unit can determine when the defrost is completed.
- the control unit functions based on the temperature value transmitted from the defrost sensor 26. It is also possible to judge whether the defrost is defective.
- thermoelectric module 20 may further include a housing 27 accommodating the heat sink 24.
- the housing 27 may be made of a material having lower thermal insulation performance than the core-on case 201. have.
- a heat conductor consisting of a heat conduction plate and a heat exchange pin
- the heat sink 24 may be interpreted as having a structure including the heat conductor and the housing 27.
- a heat sink receiving portion (2 units) having a size corresponding to the thickness and area of the heat sink 245 may be recessed.
- the left and right sides of the heat sink receiving portion (2 units) may be formed.
- a number of fastening bosses 272 may protrude from the edge.
- the member 272 passes through both sides of the cold sink 22 and is inserted into the fastening boss 272, so that the components constituting the thermoelectric module 20 are assembled in a single body.
- the inlet pipe 241 through which the refrigerant flows and the refrigerant flows out to the side edge of the heat sink 24 The outlet pipe 242 may be extended.
- a pipe passage hole 273 through which the inlet pipe 241 and the outlet pipe 242 pass may be formed.
- thermoelectric element receiving hole 231 corresponding to the size of the thermoelectric element 21 is formed in the center of the insulation material 23.
- the thickness of the insulation material 23 is the thickness of the thermoelectric element 21. It is formed thicker than the thickness, and a portion of the rear surface of the cold sink 22 may be inserted into the thermoelectric element receiving hole 231.
- the cold sink 22 and the heat sink 24 constituting the thermoelectric module 20 are Since it is maintained at a temperature, frost or ice may grow on the surface, causing a problem of deteriorating heat exchange performance.
- the heat sink 24 functions as a radiator that cools the heating surface of the thermoelectric element 21, but the refrigerant flowing inside Since the temperature is maintained at around -20 O C, freezing occurs on the surface of the heat sink 24 as well.
- thermoelectric module the operation of melting ice or frost generated in the thermoelectric module is defined as the core greenhouse defrost operation, and the defrost operation in the deep greenhouse is performed by cold sink defrost and heat sink defrost. It is defined as including.
- FIG. 10 is an enlarged perspective view showing the appearance of the thermoelectric module accommodation space viewed from the refrigeration evaporation chamber side
- FIG. 11 is an enlarged sectional view showing the structure of the rear end of the heart greenhouse equipped with the thermoelectric module.
- the freezing chamber 102 and the freezing evaporation chamber 104 are partitioned by a partition wall 103, and the core temperature refrigeration unit 200 The rear surface is in close contact with the front surface of the planar wall 103.
- the above plan wall 103 includes a grill pan 51 exposed to the freezer cooler and a shroud 56 attached to the rear surface of the grill pan 51 can do.
- a module sleeve 53 is formed protruding apart from each other, and a module sleeve 53 is protruded on the front surface of the grill fan 51 corresponding to between the freezer compartment side discharge grills 511 and 512.
- the thermoelectric module is formed inside the module sleeve 53. (20)
- a thermoelectric module receiving portion 531 is formed.
- a flow guide 532 may be provided in a cylindrical shape or a polygonal shape inside the module sleeve 53, and the inside of the flow guide 532 is a fan grille part ( 536) can be divided into a front space and a rear space. A number of air passage holes may be formed in the fan grill part 536.
- the core greenhouse side discharge grills 533 and 534 may be formed respectively.
- the core greenhouse fan 25 may be accommodated inside the flow guide 532 corresponding to the rear of the fan grill part 536.
- the flow corresponding to the space in front of the fan grill part 536 may be accommodated.
- the guide 532 serves to guide the flow of cool air so that the core greenhouse coolant is sucked into the core greenhouse fan 25. That is, the fan grill unit 536 is introduced into the inner space of the flow guide 532 and is drawn into the inner space of the flow guide 532.
- the cold air that has passed through is discharged in the radial direction of the core greenhouse fan 25 to exchange heat with the cold sink 22.
- the cold air that is cooled while exchanging heat with the cold sink 22 and flows in the vertical direction is at the core greenhouse side. It is discharged back to the core greenhouse through discharge grills (533, 534).
- thermoelectric module receiving part 531 is at the rear end of the flow guide 532 (or
- the housing 27 accommodating the heat sink 24 protrudes from the rear surface of the upper planning wall 103 to be placed in the freezing and evaporation chamber 104. Accordingly, the housing 27 has The rear surface is exposed to the cold air of the refrigeration evaporation chamber 104, so that the surface temperature of the housing 27 is substantially maintained at a temperature equal to or similar to that of the cold air in the refrigeration evaporation chamber.
- thermoelectric module receiving part 531 the thermoelectric module receiving part 531
- thermoelectric element 21 and the heat sink 24 are inside the housing 27 It consists of a structure that is accommodated in
- thermoelectric module receiving portion 531 faces downward toward one side
- a depression for mounting the defrost water guide 30 may be formed at the lowest point of the bottom part 535.
- the defrost water guide 30 is fitted in the recessed portion and performs a drainage hole function to guide the defrost water generated during the core temperature room defrost operation to flow down to the bottom of the refrigeration evaporation chamber 104.
- thermoelectric module receiving part 531 It should be discharged to the outside of the thermoelectric module receiving part 531 along the guide 30.
- the cold sink heater 40 is bent many times on the bottom portion 535
- the main heater 41 and the guide heater 42 may have one heater. Although it may be formed by bending multiple diffractions, it is not excluded that a separate heater is provided separately.
- the heart greenhouse temperature and the cryo-evaporation chamber temperature increase from the normal heart greenhouse temperature and the freezing evaporation chamber temperature.
- the heart greenhouse temperature and the inside temperature and the freezing chamber temperature increase.
- the freezing evaporation chamber temperature is still maintained at a temperature significantly lower than the freezing temperature.
- the temperature inside the core greenhouse is lower than the temperature of the freezing and evaporation chamber.
- the moisture vapor floating in the heart-temperature room may flow into the freezer evaporation room through the defrost guide.
- FIG. 12 is a rear perspective view of a compartment provided with a defrost water discharge hole clogging means according to an embodiment of the present invention
- FIG. 13 is an exploded perspective view of a compartment provided with the defrost water discharge hole clogging means.
- the partition wall according to the embodiment of the present invention may include a grill pan 51 and a shroud 52, as described above.
- the shroud 52 is coupled to the rear surface of the grill pan 51, approximately
- a freezer fan mounting hole 522 may be formed in the center.
- a freezing chamber fan (1 unit: see Fig. 1) is mounted in the mounting hole 522 to suck in cold air in the freezing evaporation chamber 104.
- the shroud 52 may include an upper discharge guide 523 and a lower discharge guide 524.
- the shroud 52 When the shroud 52 is coupled to the rear surface of the grill pan 51, it is connected to the freezer compartment side discharge grills 511 and 512 formed on the grill pan 51, respectively. Therefore, the freezing compartment
- the cold air discharged from the fan (1 unit) is supplied to the freezing chamber 102 while flowing along the upper discharge guide 523 and the lower discharge guide 524.
- thermoelectric module 20 On the other hand, on one side of the shroud 52, constituting the thermoelectric module 20
- a housing receiving hole 521 into which the housing 27 is inserted may be formed.
- the housing receiving hole 521 may be understood as a cutout for preventing interference with the thermoelectric module 20.
- thermoelectric in a state in which the shroud 52 is coupled to the grill pan 51, the thermoelectric
- a back heater seating portion 525 may be formed in a portion of the shroud 52 corresponding to a bottom portion 535 of the module receiving portion 531 and an area shielding the defrost guide 30.
- the back heater seating part 525 may be formed at a lower end of the housing receiving hole 521.
- the back heater seating portion 525 may be defined as a surface protruding rearward than the lower discharge guide 524. The back heater seating portion 525 and the lower portion discharged.
- a guide through hole 526 may be formed in a step portion formed between the rear surfaces of the guide 525.
- the back heater 43 may be seated in the back heater seating portion 525.
- the back heater seating portion 525 When power is applied to the back heater 43, the back heater seating portion 525 is heated. When the back heater seating portion 525 is heated, the back heater seating portion 525 and its surroundings 2020/175832 1»(:1 ⁇ 1 ⁇ 2020/002078 There is an effect of not being conceived on the back of the shroud 52.
- the back heater 43 and the cold sink heater 40 may be independent heaters different from each other, and may be designed to enable independent on-off control by a control unit. However, although they are independent heaters, they can be controlled to be turned on or off at the same time.
- Fig. 14 shows a structure of a back heater connected to a cold sink according to another embodiment of the present invention.
- the bag heater 43 may have a structure combined with the defrost heater 40, a connected structure, or a single body structure.
- the back heater 43 combined with the cold sink heater 40 is divided into a main heater 41, a guide heater 42 and a back heater 43 by bending a single heater many times.
- the cold sink heater 40 may be divided into a main heater, a guide heater, and a back heater.
- the cold sink heater 40 and the back heater 43 having this structure can be controlled to be turned on at the same time and turned off at the same time. However, it is not limited thereto and may be independently controlled to be turned on or off.
- the refrigerant chamber valve When the refrigeration chamber starts operation, the refrigerant chamber valve is closed and the refrigerant supply to the refrigerant chamber evaporator is stopped.
- supply interruption through the opening degree of the refrigerant valve control or the compressor operation is performed. This is how the cooling cycle itself enters the rest period by stopping.
- FIG. 15 is a diagram showing a method of controlling a refrigeration actual phase operation according to an embodiment of the present invention.
- control unit determines whether or not the first refrigeration actual phase operation condition is satisfied ( ⁇ 20).
- the first refrigeration actual defrost operation condition (or the first natural defrost mode) may be defined as a condition for determining whether a general defrost operation condition has occurred.
- the refrigerating compartment fan In the first stage of the defrost operation, the refrigerating compartment fan is driven at low speed, and the speed of the refrigerating compartment fan can be set to a lower speed than the speed of the refrigerating compartment fan applied in the refrigerating compartment general cooling operation mode.
- the control unit judges whether the conditions for completion of the first stage of the defrost operation are satisfied ( ⁇ 40).
- the temperature detected by the cold storage defrost sensor attached to the refrigerating chamber evaporator is the set temperature. (1 ! )In case of abnormality, when the conditions for completion of the defrost operation in the freezer are satisfied, and the set time from the time when the first stage of the defrost operation starts )If at least one of the above cases is satisfied, the condition for completion of the first stage of the defrost operation above can be set to be satisfied.
- the above setting temperature (1 ⁇ ) is 3 degrees, and the above setting time (,) can be 8 hours, but it is not limited thereto.
- the control unit makes the second stage of the defrost operation immediately executed ( ⁇ 50).
- the operation of the refrigerator compartment fan stops and the natural defrost box body Enter the rest period and allow normal operation for cooling the refrigerator compartment to be performed.
- control unit checks whether the conditions for completion of step 2 of the defrost operation are satisfied.
- Judgment 160 In detail, if it is judged that the temperature of the refrigerator compartment has entered the satisfactory temperature range shown in Fig. 7 during the normal operation (as shown in Fig. 7), it can be set to satisfy the conditions for completing the second stage of the defrost operation.
- control unit allows the third step of the defrost operation to be performed immediately 170).
- the refrigerating compartment fan is controlled to run at low speed.
- the control unit checks whether the conditions for completing the third stage of the defrost operation are satisfied.
- the condition of completion of the defrost operation in the freezer is satisfied, and the set time elapsed from the point when the third stage of defrost operation started. If satisfied, it can be set to satisfy the conditions for completing step 3 of the defrost operation.
- the set temperature ⁇ is 5 ⁇ (:, and the set time 3 ⁇ 4 ) may be 8 hours, but is not limited thereto.
- the cold storage room is finished.
- the operating conditions can be defined as conditions for determining whether defrost is not normally performed due to a defrost sensor failure, etc. In this case, the defrost operation is forced to be performed. 2020/175832 1»(:1 ⁇ 1 ⁇ 2020/002078
- the refrigeration actual phase sensor attached to the refrigeration chamber evaporator during general cooling operation may be set to satisfy the second refrigeration actual phase operation condition.
- the above set time ()) Is 4 hours, and the set temperature (I ⁇ ) above may be -5 ⁇ (:, but is not limited thereto.
- the control unit of the refrigerator is the “storage room show defrosting operation” for defrosting the thermoelectric module of the storage room show and the storage room: “storage room B defrosting” It features control so that “operation” is performed so that it is superimposed in at least some sections.
- thermoelectric module and storage room of the storage room show:
- the control unit “storage room show defrost operation” and “storage room ⁇ defrost operation” are at least some sections. It can be controlled to be nested in.
- thermoelectric module The reason is that, while the temperature of the cold sink of the thermoelectric module is increased by applying a reverse voltage to the thermoelectric module for "defrost operation in the storage room show," the storage compartment shows when refrigerant flows into the cooler of the storage compartment. This is because heat loss may occur in the cooler chamber of the storage chamber: 8, which may lower the defrost efficiency of the thermoelectric module.
- the cold sink (including the heat conductor itself or the heat transfer member in which the heat conductor and the housing are combined) and the defrost water guide of the storage chamber show: 6 It communicates with the cooler chamber (eg, freezer evaporation chamber) of, or the storage chamber: refers to a structure exposed to cold in the cooler chamber of 8.
- the cooler chamber eg, freezer evaporation chamber
- the "cold sink non-communicative structure” refers to a structure that is adjacent to the wall forming the cooler chamber of the storage chamber: 8, but not sufficiently insulated from the wall forming the cooler chamber of the storage chamber: 8.
- thermoelectric module The reason is that in the cold sink communication type or non-communication type structure, the cold sink and the cold sink of the thermoelectric module increase in temperature by applying a reverse voltage to the thermoelectric module for "defrost operation in storage room" This is because if refrigerant flows into the cooler of the storage compartment: 8 that is not sufficiently insulated, heat loss may occur in the cooler chamber of the storage compartment: 8 in the storage compartment show, and the defrosting efficiency of the thermoelectric module may decrease. 2020/175832 1»(:1 ⁇ 1 ⁇ 2020/002078
- the defrost water guide may freeze and block.
- the present invention is the above “serial system", the above “cold sink communication structure” and the above “cold
- thermoelectric module and the freezer chamber for defrosting the core greenhouse and the freezing chamber
- thermoelectric module provided for cooling the deep green house, a cold sink 22 and a heat
- the heat sink 24 in the form of an evaporator and the freezing chamber evaporator 17 are connected in series by a refrigerant pipe.
- the refrigerant flowing through the heat sink (24) and the freezer chamber evaporator (17) is a two-phase low-temperature and low-pressure state in the range of -30°0 to -20°0 ⁇ 0!
- the temperature of the cold sink 22 drops to -50°0 or less, and the heat sink 23 is set by the standard of the thermoelectric element as much as ⁇ ! Maintain a temperature difference with the sink 22. For example, if the heat of the thermoelectric element used is 30° (:, the heat sink 23 is maintained at a temperature of about -20°0).
- the heat sink 23 functions as a radiator that receives heat from the heating surface of the thermoelectric element and transfers it to the refrigerant, but is maintained at a temperature significantly lower than the freezing temperature.
- thermoelectric module As the operating time of the thermoelectric module increases, frost and ice may be formed not only in the cold sink but also in the heat sink, resulting in deterioration of the performance of the thermoelectric module.
- thermoelectric element It should be discharged to the outside so that the temperature difference between the heat absorbing surface and the heating surface of the thermoelectric element (the switch is maintained below a certain level. To do this, the compressor is driven and the heat transferred to the heating surface of the thermoelectric element is transferred through the refrigerant of the heat sink) It must be released quickly.
- thermoelectric element In this situation, if the power supplied to the thermoelectric element is increased to prevent an increase in the temperature of the heat absorbing surface, the cooling power of the thermoelectric element (science efficiency ⁇ is all lowered).
- thermoelectric element When the deep-temperature room defrost operation is performed, the heating surface of the thermoelectric element functions as a heat absorbing surface
- the moisture vapor that flows into the freezer evaporator from the heartbeat can lead to a defect that is attached to only one side of the freezer evaporator. You can't. Then, the defrosting operation cannot be performed despite the need for the actual freezing operation, resulting in a decrease in the heat absorption function of the freezing chamber evaporator, resulting in a delay in cooling the freezing chamber.
- thermoelectric element In addition, if a reverse voltage is applied to the thermoelectric element for the real temperature of the core, the temperature of the heat absorbing surface increases to the temperature of the image and the ice attached to the cold sink of the thermoelectric element is melted. At this time, in order to maintain the speed determined by the specifications of the thermoelectric element, the temperature of the heating surface of the thermoelectric element to which the heat sink is attached must also increase.
- FIG. 16 is a diagram showing the operating states of the components constituting the refrigeration cycle over time when the heart greenhouse and the freezing chamber defrost is performed
- FIG. 17 is a defrost operation of the freezer compartment and the heart greenhouse according to an embodiment of the present invention This is a flowchart showing the control method.
- avoidance of the defrost operation section can be further divided into a deep cooling section 61) in which deep cooling is performed and a defrost section 62) in which a full-scale defrost operation is performed.
- control unit performs the general cooling operation 210), during the defrost cycle ( ⁇ ®:
- the control unit judges whether the ventricle greenhouse mode is on or not 220). This is because the defrost cycle of the freezer compartment is set differently depending on the on/off state of the ventricle greenhouse mode.
- the control unit determines whether the first freezing chamber defrost cycle has elapsed 230), and the ventricle greenhouse mode is turned off.
- the step of judging whether the defrost cycle of storage room: 8 has elapsed can be replaced with the step of judging whether the defrost cycle of the storage room show has elapsed.
- the defrost cycle of the freezing chamber is determined as follows.
- the initial defrost cycle can mean a defrost cycle given for a situation in which the refrigerator is installed and turned on for the first time, or the ventricle greenhouse mode is turned on from an off state.
- the general defrost cycle is for situations in which the refrigerator is operated in the general cooling mode.
- variable defrost cycle is a value that can be reduced or canceled depending on the operating condition of the refrigerator.
- variable defrost cycle refers to the time to be reduced (shortened) or released according to a certain rule whenever a change occurs, such as opening or closing the freezer door or the load being put into the storage.
- variable defrost cycle When the variable defrost cycle is released, it means that the variable defrost cycle value is not applied to the defrost cycle time, i.e. the variable defrost cycle is zero.
- the condition for reducing or shortening the variable defrost cycle may be set so that the variable defrost cycle is reduced in proportion to the open holding time of the freezer door. For example, if the freezer door is kept open for a certain amount of time. , The variable defrost cycle value that is reduced per unit time (second) can be set.
- variable defrost cycle release condition can be set as follows.
- the above condition means a case where both the refrigerating chamber valve and the freezing chamber valve are open.
- the above setting time of 20 minutes does not exceed one example and can be set to a different value.
- the control temperature is at the notch temperature shown in Fig. 7), at the first satisfaction threshold 1), and at the second. It can mean any one of 2) to a satisfactory critical temperature.
- the set temperature 8o(: is not past one example, it can be set to a different value.
- Condition 4 In case the internal core temperature rises above 5o 0 within the set time value (ex: 3 minutes ' ) after the inner concentricity is low.
- condition compressor yeosok distributors sigayi island time (a).
- the setting area 7 above is not past one example, and can be set to a different value.
- the control unit includes a number of indoor temperature zones according to the indoor temperature range.
- Temperature Zone may be stored. For example, as shown in Table 1 below, it can be subdivided into 8 indoor temperature zones (RT Zones) according to the indoor temperature range, but is limited to this. It is not.
- the temperature range zone with the highest indoor temperature can be defined as RT Zone K or Z1), and the temperature range zone with the lowest indoor temperature can be defined as RT Zone 8 (or Z8). You can see it indoors, and the Z8 can be seen indoors in the middle of winter.
- the indoor temperature zone can be defined as a low-temperature zone, a medium-temperature zone (or a comfort zone), and a high-temperature zone, depending on the temperature range.
- the time point at which this is satisfied and the time point at which the defrost cycle elapses are the same time point will be described.
- the condition for inputting the operation in response to the load of the core greenhouse is a variable defrost cycle release condition and is not added to the final defrost cycle calculation. That is, the defrost cycle finally calculated is shorter than the initially set defrost cycle.
- the point at which the defrost cycle finally calculated by considering the input conditions for the core greenhouse load response operation has elapsed may coincide with the point at which the conditions for inputting the core greenhouse load response operation are satisfied.
- the above-mentioned core greenhouse load response operation can be performed with priority, and when the core greenhouse load-response operation is finished, the freezing chamber/deep greenhouse defrost operation can be continued.
- the defrost operation may be performed after the defrost cycle has elapsed.
- the initial defrost cycle included in the defrost cycle may be the same.
- the initial defrost cycle may be 4 hours, but it is not limited thereto.
- the general defrost cycle included in the first freezing actual defrost cycle may be set to be shorter than the general defrost cycle included in the second freezing chamber defrost cycle.
- the general defrost cycle included in the first freezing actual defrost cycle may be set to 5 hours.
- the general defrost cycle included in the second freezing actual defrost cycle may be set to 7 hours, but is not limited thereto.
- variable defrost cycle included in the first freezer actual phase may also be set to be shorter than the variable defrost cycle included in the second freezer actual phase.
- the variable defrost cycle included in the first freezer actual phase is time (the freezer door is approximately It can be set as the time shortened when it is opened for 85 seconds), and the variable defrost cycle included in the second freezing actual defrost cycle can be set as 36 hours (the time shortened when the freezer door is opened for about 308 seconds), but this is limited to no.
- the conditions for shortening (reducing) the fluctuating defrost cycle included in the condition task 2 actual refrigeration cycle may be set identically or differently.
- variable defrost cycle release condition included in the first refrigeration actual defrost cycle may include the above conditions 1 to 7
- the variable defrost cycle release condition included in the second refrigeration actual defrost cycle includes the conditions 1 to 4 and May contain 8.
- condition 8 is not included in the first freezing actual defrost cycle is to prevent an increase in power consumption due to too frequent defrost operation in the low temperature region.
- the first freezing actual phase period may be a maximum of 19 hours and a minimum of 9 hours
- the second freezing actual phase period may be a maximum of 47 hours and a minimum of 11 hours.
- the defrost cycle may be set by adjusting appropriately according to the situation.
- the control unit determines whether or not the conditions for inputting the deep greenhouse load response operation are satisfied (3240).
- the core greenhouse load response operation can be carried out first 250).
- step 3240 must be performed in a state where the first freezing actual phase has elapsed. In other words, even if the conditions for inputting a deep greenhouse load response operation are satisfied, this is ignored. It is also possible to cause the defrost operation to be performed immediately, i.e., a control algorithm in which steps 8240 to 3260 are omitted (or deleted) may be possible.
- a control algorithm in which steps 8240 to 3260 are omitted (or deleted) may be possible.
- the internal temperature of the freezing chamber and the core greenhouse or the execution time of the deep cooling operation may be set as a condition.
- the deep cooling operation can be terminated.
- the control temperature is the second satisfaction critical temperature (N22 or N32) shown in FIG. It should be noted that the above set temperature can be 3 O C, but is not limited thereto.
- the control unit determines whether the completion condition of the deep cooling operation is satisfied (S280), and when it is determined that the deep cooling completion condition is satisfied, the freezing chamber and the core greenhouse are defrosted.
- the driving is performed in earnest (S290).
- the back heater 43 is all turned on, and the cold sink heater 40 and the back heater 43 can be maintained in a warm state until both the defrosting operation of the freezer and the deep greenhouse are completed.
- the frost or ice melts on the surface, the surface of the cold sink of the thermoelectric module, and the rear surface of the housing that receives the heat sink of the thermoelectric module to become defrost water, and the defrost water is a drain in which the freezing evaporation chamber is installed on the floor. It is collected with a drain pan.
- the starting point of the deep-temperature room defrosting operation and the starting point of the freezing real-time phase operation may be set differently, or the same time point may be set.
- control unit is for both the freezing real defrost operation and the core greenhouse defrosting operation.
- the first freezing chamber defrost cycle is initialized, the cold sink heater 40 and the back heater 43 are turned off, and the operation after defrosting is performed (S310 ).Operation after the above defrost, 2020/175832 1»(:1 ⁇ 1 ⁇ 2020/002078 May include post-run and refrigeration actual post-run.
- the above-described core greenhouse load response operation may include the above-described core greenhouse load response operation.
- the input conditions for the core greenhouse load response operation are as follows.
- the freezer compartment fan is kept in a stopped state for a set time (eg 10 minutes) after the compressor is driven, and when the set time elapses, the freezing compartment fan is It can rotate to cool the freezer.
- the reason for making the freezer fan run after a predetermined time elapses from the compression start point in the post-refrigeration operation phase is as follows.
- the temperature of the freezing chamber evaporator is
- the compressor drives and the temperature of the refrigerant passing through the freezer expansion valve falls to the normal temperature (e.g., approximately -30 o, and the refrigerant flowing inside the freezer evaporator drops to the normal temperature (e.g. approximately -20 o). It takes some time.
- control is performed to return to step 210 in which the general cooling operation is performed at 227 while the refrigerator is powered on.
- the freezing chamber deep cooling is performed 222), and when the freezing chamber deep cooling completion condition is satisfied 223), the freezing chamber phase phase operation is performed 224 ).
- the core greenhouse phase is defined as an operation to remove frost or ice formed on the thermoelectric module provided to cool the core greenhouse, and the freezing chamber phase removes frost or ice formed in the freezing chamber evaporator provided for cooling the freezing chamber. Once again, it is clear that it is defined as an operation to perform.
- the "storage room show defrost operation" includes a cold sink defrost operation and a heat sink defrost operation of the thermoelectric module provided for cooling the storage room show.
- the "Storage room show defrost operation" may include a cold sink defrost operation and a heat sink defrost operation.
- This "sub-zero system or structure” is defined as a refrigerant circulation system or structure in which the cold sink of the storage room show and the heat sink of the storage room show are also maintained at sub-zero temperature in order to maintain the temperature of the storage room show at a temperature below zero.
- the storage room show defrost operation may include cold sink defrost operation and heat sink defrost operation.
- the "heat sink communication type structure” can be defined as a structure in which the heat sink of the storage chamber show is exposed to or communicated with the cooler chamber of the storage chamber: 8.
- the "heat sink non-communicative structure” may be defined as a structure in which the heat sink of the storage chamber show is adjacent to the wall forming the cooler chamber of the storage chamber: 8, and is not sufficiently insulated from the wall of the cooler chamber.
- the present invention can be applied to at least one of the "subzero system or structure", the "heat sink communication type structure” and the “heat sink non-communication type structure”.
- the heat sink should be interpreted as including a heat conductor consisting of a heat conduction plate and a heat exchange pin, or a heat transfer member consisting of a heat conductor and a housing receiving the heat conductor.
- the storage room show is limited to the case of the heart greenhouse.
- FIG. 18 is a graph showing the temperature change of the thermoelectric module that changes with time while the core greenhouse defrost operation is performed
- FIG. 19 is a flowchart showing a control method for the defrost operation of the core greenhouse according to an embodiment of the present invention.
- a first embodiment for a core greenhouse defrost operation is characterized in that the cold sink defrost operation is first performed, and then the heat sink defrost operation is performed.
- the deep cooling operation is performed due to the elapse of the freezer phase cycle in the core greenhouse mode warming state, and the freezing chamber and the core greenhouse temperature are sufficiently cooled to a temperature lower than the satisfactory temperature (supercooling). Then, the deep cooling operation is completed.
- the control unit judges whether or not the set time () has elapsed after the deep cooling operation is completed.
- the set time may be 2 minutes, but is not limited thereto.
- the reason for judging whether the set time has elapsed after the deep cooling operation is completed is that the direction of the voltage supplied to the thermoelectric element must be changed for the cold sink defrost operation. That is, the constant voltage for deep cooling The supply must be switched to reverse voltage supply for cold sink defrost.
- thermoelectric element If the polarity of the voltage supplied to both ends of the thermoelectric element changes abruptly, a thermal shock due to temperature change may occur, resulting in a problem that the thermoelectric element is damaged or its lifespan is shortened.
- thermoelectric element when supplying current (or power) to a thermoelectric element, it is better to increase the amount of supply current gradually or gradually, rather than supplying the set current at once.
- thermoelectric element when supplying power to a thermoelectric element, it is necessary to increase the supply current gradually or step by step rather than supplying the maximum current at once, so that the maximum voltage is applied to both ends of the thermoelectric element after a predetermined time has elapsed.
- the thermal shock that may occur to the thermoelectric element can be minimized. This applies equally not only to supplying a constant voltage but also when supplying a reverse voltage.
- thermoelectric element In addition, as soon as the power supplied to the thermoelectric element is cut off, the voltage applied to the thermoelectric element does not drop, but gradually decreases. Therefore, supplying a constant voltage is reduced. 2020/175832 1»(:1 ⁇ 1 ⁇ 2020/002078 If the reverse voltage is supplied immediately after stopping, the residual current remaining in the thermoelectric element and the supplied reverse current collide and the circuit in the thermoelectric element may be damaged.
- thermoelectric element For this reason, it is advisable to provide a rest period for a certain period of time when switching the polarity (or direction) of the current supplied to the thermoelectric element.
- thermoelectric element When 47 is the set time, reverse voltage is applied to the thermoelectric element to
- thermoelectric element (21) When reverse voltage is applied to the thermoelectric element (21), the cold sink (22) becomes the heating surface, and the heat sink (24) becomes the heat absorbing surface.
- the refrigerator operation section shows the general cooling operation section), avoiding the section in which the defrost operation is performed due to the elapsed defrost operation cycle, and the operation performed after the defrost operation is completed. After defrosting, the operation section can be divided by zero.
- the above defrost operation section can be further divided into a deep cooling section 61) in which deep cooling is performed and a defrost section 62) in which a full-scale defrost operation is performed.
- graph (31 is the temperature change graph of the temperature of the cold sink (the temperature of the heat absorbing surface of the thermoelectric element when a constant voltage is supplied)
- graph 02 is the temperature of the heat sink (the temperature of the heating surface of the thermoelectric element when a constant voltage is supplied)
- graph 03 is a graph of the change in power consumption of the refrigerator.
- Temperature, heat sink (24) is approximately -25o to -30o (: temperature within the range. Deep cooling operation section 61), the maximum constant voltage is applied to the thermoelectric element.
- thermoelectric element When the deep cooling operation is finished, the supply of constant voltage to the thermoelectric element is stopped. After a set time (after the rest period for a period of time has elapsed, reverse voltage is supplied to the thermoelectric element).
- thermoelectric element (21) As the reverse voltage applied to the thermoelectric element (21) increases, the temperature of the cold sink increases, and the temperature of the heat sink decreases. That is, when the reverse voltage is applied to the thermoelectric element, the cold sink is -50 (: As the temperature increases at, the temperature of the image rises rapidly to about 5 ⁇ (:), and the heat sink increases from about-30 ⁇ (: to about-35 ⁇ (:). As can be seen from the graph, it can be seen that the temperature increase rate of the cold sink is higher than the temperature decrease rate of the heat sink.
- thermoelectric element The heat absorbing surface and the heat generating surface of the thermoelectric element are
- the temperature difference between the heat absorbing surface and the heating surface of the thermoelectric element gradually increases after the temperature difference (the point at which the temperature decreases and reaches the reversing critical temperature 1) until the maximum value of the thermoelectric element is reached. Will increase.
- thermoelectric element in contact with the cold sink
- the heat absorbing surface functions as a heating surface
- the heating surface of the thermoelectric element in contact with the heat sink functions as a heat absorption surface.
- the phenomenon that the temperature of the cold sink is higher than the temperature of the heat sink is for a predetermined time from the point when the reverse voltage is applied. It occurs after this elapsed time.
- the temperature of the heat sink also increases after the point at which the above value becomes maximum 2). This means that when the value of ⁇ ! reaches the maximum value, the heating surface and the heat absorbing surface even if the supply voltage increases. This is due to the characteristic of the thermoelectric element that does not increase the temperature difference of the thermoelectric element any more; that is, if the temperature of the heating surface is further increased at the point where the heat is at its maximum, the temperature of the heat absorbing surface also increases due to the heat backflow phenomenon. This has already been explained above.
- control unit includes the back heater 43 )Can be controlled to be turned on.
- the control unit continuously judges whether the cold sink defrost completion condition is satisfied 430).
- the cold sink defrost completion condition can be set to be satisfied.
- the temperature (1 ⁇ ) can be 5o(:, and the setting time () can be 60 minutes, but it is not limited thereto.
- thermoelectric element When it is judged that the cold sink defrost completion condition is satisfied, the thermoelectric element is turned off.
- thermoelectric element stop the reverse voltage supply to the thermoelectric element.
- cold sink defrost (section When it is finished, it has a pause to stop the power supply to the thermoelectric element for the set time ( 2 ).
- 2020/175832 1» (:1 ⁇ 1 ⁇ 2020/002078 time ⁇ 2) can be 2 minutes, but is not limited thereto. The reason for having a rest period is as described above.
- thermoelectric element When [49 is the set time, 2 ) elapses, a constant voltage is supplied to the thermoelectric element so that the heat sink functions as a heating surface again to heat it.
- the heat sink 24 is accommodated in a heat sink receiving unit (2 units: see Fig. 9) formed in the housing 27, and the heat sink 24 and the heat sink receiving unit (2 units) The space between the heat sink and the heat sink is completely sealed by the sealant.
- the surface temperature of the heat sink 24 is maintained at an ultra-low temperature of -30°0. This temperature is about 10 degrees lower than the freezing evaporation chamber temperature.
- frost may build up on the surface of the housing 27. This can be said to be the same as the principle that dew forms on the surface of the kettle containing cold water in midsummer. Since the surface temperature of the housing 27 is significantly lower than the freezing temperature, the dew formed on the surface of the housing 27 is immediately frozen and converted into ice.
- the surface of the housing (27) means that of the housing (27) exposed to the freezing and evaporation chamber.
- the surface of the housing 27 in contact with the heat sink 24 can be defined as the front surface.
- a defrost operation to remove ice needs to be performed, which is defined as a heat sink defrost operation.
- the second pre-reverse critical temperature is higher than the first pre-reverse critical temperature.
- the heat sink temperature decreases from about -30 o (:, while at the time of heat sink defrost operation, the cold sink temperature begins to decrease from about 5 o (:).
- the second inversion critical temperature is higher than the first inversion critical temperature.
- thermoelectric element when a constant voltage is applied to the thermoelectric element, but the maximum constant voltage is supplied from the beginning to the end, as indicated by the dotted line in Fig. 18, the temperature of the cold sink rapidly increases from a certain point 4). Becomes visible.
- thermoelectric element which, as described above, does not increase the power value beyond the maximum value.
- the defrosting effect of removing ice adhering to the housing 27 may be improved, but as the temperature of the cold sink increases, the heat absorption capacity of the cold sink decreases, resulting in the adverse effect of reducing the cooling power and efficiency of the thermoelectric module.
- the maximum constant voltage is supplied for a certain period of time, and the intermediate constant voltage is supplied thereafter. That is, the maximum amount of blood in the heat sink defrost section is maximum.
- the constant voltage section can be divided into 2) and the intermediate constant voltage section: 82).
- thermoelectric element for a predetermined time
- the maximum constant voltage section can be set shorter than the middle constant voltage section, but it should be noted that it can be changed appropriately according to the design conditions.
- the heat sink defrost operation completion condition may be set to be satisfied.
- the heat sink defrost operation can also be completed.
- the cold sink surface temperature is the temperature of the image, but the temperature inside the core greenhouse is higher than the temperature before the defrost operation, -50 ⁇ (: but still about -30 ⁇ less than 0, specifically It is maintained at a temperature of -38°0.
- the water vapor generated during the cold sink defrosting process may land on the inner wall of the core greenhouse during the heat sink defrost operation, and may grow over time.
- the present invention needs a control to reduce the re-implantation of water vapor generated on the inner wall surface of the storage room show during the "storage room show defrost operation".
- the control unit is The fan in the storage room can be driven or a constant voltage can be applied to the thermoelectric module.
- the storage room show defrost operation on the inner wall of the storage room show, and to discharge the water vapor to the outer space, the storage room show
- the fan of the can be controlled to run.
- the "steam communication type structure” may be defined as a structure in which the heat absorbing side of the thermoelectric module of the storage room show is exposed or communicated with an external space excluding the space of the storage room show.
- thermoelectric module of the storage room show
- thermoelectric module of the storage room show It can be controlled so that a constant voltage is applied. Then, the amount of water vapor re-implanted on the heat absorbing side of the thermoelectric module of the storage room show is increased, thereby minimizing the phenomenon of re-implantation on the inner wall of the storage room show.
- thermoelectric module In the "non-steam communication type structure", it is to reduce the re-implantation of the water vapor generated during the defrost operation of the storage room show on the inner wall of the storage room show, and induce re-implantation on the heat absorbing side of the thermoelectric module of the storage room show. For this purpose, it can be controlled to apply a constant voltage to the thermoelectric module and drive the storage room show fan.
- non-steam communication type structure may be defined as a structure in which the heat absorption side of the thermoelectric module of the storage room show is not exposed to an external space other than the space of the storage room show and is not communicated.
- the external space may include a cooler chamber of 8 outside the refrigerator or storage chamber.
- the time when the constant voltage is applied to the thermoelectric module and the time when the fan is driven in the storage room show need not be the same. However, it may be advantageous to drive the storage room show fan after the constant voltage is applied to the thermoelectric module. In other words, if the fan of the storage chamber is driven after the heat absorbing side of the thermoelectric module is sufficiently cooled, water vapor can more effectively reapply on the heat absorbing side of the thermoelectric module.
- the present invention can be applied to at least one of the above “steam communication type structure” and “steam non communication type structure”.
- the storage room show is limited to the case of the heart greenhouse.
- thermoelectric module In order to reduce re-implantation on the inner wall, a constant voltage is applied to the storage room show thermoelectric module and the control is controlled to drive the fan in the storage room show as an example.
- FIG. 20 is a flowchart showing a control method of a refrigerator to prevent frost build-up on the inner wall of the core greenhouse during defrost operation.
- the control unit causes the maximum constant voltage to be supplied to the thermoelectric element for the set time, 3 ) 461).
- the set time ( 3) elapses, 462)
- the intermediate constant voltage is supplied to the thermoelectric element 463).
- the core greenhouse fan When an intermediate constant voltage is supplied to the thermoelectric element, the core greenhouse fan is driven 464).
- the core greenhouse fan may be controlled to be driven at the same time when an intermediate constant voltage is supplied to the thermoelectric element, and may be controlled to be driven with a slight time difference.
- thermoelectric element Since it is in a high state, it takes time for the temperature of the cold sink to drop to sub-zero temperatures even when a constant voltage is applied to the thermoelectric element.
- the cold sink is cooled to the lowest temperature when the voltage applied to the thermoelectric element is switched from the highest constant voltage to the medium constant voltage. Therefore, this 2020/175832 1»(:1 ⁇ 1 ⁇ 2020/002078
- the core greenhouse fan is operated, the amount of water vapor inside the core greenhouse that is deposited on the cold sink surface per unit time increases, so the implantation effect can be maximized.
- thermoelectric element is cut off and the operation of the core greenhouse fan is stopped.
- the first embodiment of the core greenhouse defrost operation according to the present invention that is, a method of allowing the cold sink defrost to be performed first, and then to perform the heat sink defrost operation has been described.
- a method of defrosting a core greenhouse according to a second embodiment of the present invention is characterized in that the defrosting of the heat sink is prioritized, and the cold sink defrosting operation is performed after that.
- thermoelectric element in which the heat sink defrost operation is performed first, there is no need to have a rest period to stop the power supply to the thermoelectric element before the heat sink defrost operation starts.
- thermoelectric element in both the deep cooling operation and the heat sink defrost operation, so electrode conversion is not required.
- the heat sink defrost operation can be performed immediately after the deep cooling operation is completed without a rest time (zero). In addition, it is also necessary to cut off the power supply to the thermal element after the deep cooling is completed. none.
- the freezing chamber valve is closed so that the refrigerant flow does not occur to the heat sink and the freezing chamber evaporator, and the freezing chamber operation is performed together.
- the control can be controlled so that the highest constant voltage is supplied to the thermoelectric element from start to finish.
- the highest constant voltage is supplied to the thermoelectric element, Since no heat dissipation occurs in the heat sink, the temperature of the heat sink gradually increases.
- the completion condition of the heat sink defrost operation can be set as a set time or heat sink surface temperature. For example, after the start of the heat sink defrost operation, the set time (eg 60 minutes) has elapsed, or the surface temperature of the heat sink is When the set temperature (e.g. 5) reaches 0, it can be judged that the heat sink defrost completion condition is satisfied.
- the set temperature e.g. 5
- a defrost sensor that senses the heat sink surface temperature It will have to be equipped separately.
- thermoelectric element When the heat sink defrost operation is completed, a reverse voltage is supplied to the thermoelectric element so that the cold sink defrost operation is performed.
- a reverse voltage is supplied to the thermoelectric element so that the cold sink defrost operation is performed.
- having a rest period before switching from the constant voltage to the reverse voltage is as described above.
- frost may accumulate on the rear surface of the housing 27 during the cold sink defrost operation. Some of the ice may melt during the defrosting operation is complete, the core greenhouse general cooling operation is performed and fall into the drain fan, and the rest may be removed during the next cycle's heat sink defrost operation.
- the present invention includes a method for controlling the back heater.
- Storage room show and storage room In the case of a refrigerator including 8, as described above, in order to remove the cold sink of the storage room show or the frost or ice that has accumulated around it, the storage room show is described above in at least some section during defrost operation.
- the control may be such that a reverse voltage is applied to the thermoelectric module of the storage room show or a voltage is applied to the cold sink defrost heater located under the cold sink.
- control unit may control voltage to be applied to the cold sink cold sink heater disposed under the cold sink in at least some section during the storage room show defrost operation.
- the storage compartment To remove frost or ice accumulated in the cooler of 8 or its surroundings, it can be controlled to apply voltage to the cooler defrost heater located under the cooler.
- the refrigerant circulation system or structure that requires heat sink defrost operation in the storage chamber show including "non-communication structure", in order to remove frost or ice from the heat sink in the storage chamber show or its surroundings, at least part of the storage chamber show defrost operation It can be controlled so that a constant voltage is applied to the thermoelectric module of the storage room show or the voltage is applied to the heat sink defrost heater during the period.
- the heat sink defrost heater is more heated than the cold sink of the thermoelectric module in the storage room show.
- It may be disposed under the heat sink at a position closer to the sink.
- the storage compartment is placed under the heat sink in at least some section during defrost operation. It can be controlled so that voltage is applied to the "heat sink drain heater".
- the water vapor generated during the above-described storage compartment show cold sink defrost operation or storage compartment show heat sink defrost operation may float in the cooler chamber of the storage compartment 6 and may accumulate on the wall forming the cooler chamber of the storage compartment 3.
- the storage chamber the wall defining 6 or the cooler chamber of the storage chamber: 8 2020/175832 1»(:1 ⁇ 1 ⁇ 2020/002078 It can be controlled so that the voltage is applied to the “cooler chamber defrost heater” located on at least one of the forming walls.
- the "cooler chamber defrost heater” may be arranged near the passage through which the water vapor generated during the cold sink in the storage room show or the heat sink in the storage room show flows into the cooler chamber in the storage room: 8. .
- the voltage can be controlled to be applied to the "cooler chamber defrost heater" located on at least one of the wall defining the storage chamber: 8 or the wall forming the cooler chamber of the storage chamber. .
- the "cooler chamber defrost heater” may be disposed near a passage through which the water vapor discharged to the outside of the storage compartment shows flows into the cooler chamber of the storage compartment: 8.
- At least one of the heat sink defrost heater, the heat sink drain heater, and the cooler chamber defrost heater may be disposed in the upper part of the cooler of the storage chamber.
- the reason is that, in the cooler lower part of the storage chamber, like a refrigeration real defrost heater, This is because a "cooler defrost heater" that defrosts the cooler of 8 can be arranged.
- At least one of the heat sink defrost heater, the heat sink drain heater, and the cooler chamber defrost heater may be disposed on a partition wall forming at least a part of a wall surface defining the cooler chamber.
- At least one of the heat sink defrost heater, the heat sink drain heater, and the cooler chamber defrost heater may be disposed on the shroud constituting the floor plan wall. The reason is that This is because at least one of the cold sink defrost heater and the cold sink drain heater may be disposed on the grill pan.
- the "back heater” of the present invention can be defined as a heater that performs at least one of the functions of a heat sink defrost heater, a heat sink drain heater, and a cooler chamber defrost heater.
- air inside the core greenhouse may flow into the freezing and evaporation chamber 104 through the defrost water guide 30.
- water vapor generated in the process of defrosting in the core temperature room when discharged to the outlet of the defrost water guide 30, it may be cooled by the refrigerating evaporation room cooler and frozen at the outlet of the defrost water guide 30.
- the back heater 43 can be turned on when the core greenhouse and the freezing chamber start operation.
- the cold sink heater 40 and the back heater 43 are mounted It can prevent freezing.
- the back heater 43 may be turned on together when the heat sink defrost starts. , When a constant voltage is supplied to the thermoelectric element, the back heater 43 may also be turned on.
- FIG. 21 is a diagram showing a method for controlling an actual freezing operation according to an embodiment of the present invention.
- the actual freezing operation according to the embodiment of the present invention regardless of whether the start of the deep cooling room defrost operation, it can be performed when a set time elapses from the time when deep cooling is completed 510) .
- the above setting time () can be 5 minutes, but it is not limited to this.
- the defrost operation can be performed immediately without waiting for the set time () to elapse.
- a heater (not shown) is heated to melt the frost and ice on the surface of the evaporator of the freezing chamber (520). This is the same as the conventional freezing chamber operation.
- the control unit judges whether the actual freezing phase completion condition is satisfied (530).
- the real freezing phase completion condition may be set to be satisfied when the temperature detected by the defrost sensor is higher than the set temperature, or the set time elapses after the start of the defrost operation, similar to the above cold sink defrost completion condition.
- the above setting time can be 5 minutes, but is not limited now.
- the reason for waiting for the set time to elapse from the point when the defrost heater is turned off is the drain fan installed on the floor of the freezing evaporation chamber for the defrosting water generated during the freezer phase operation and the core greenhouse defrost operation during the set time period ( 2 ). It is to gather together.
- the defrost water generated by melting ice separated from the cold sink surface by the cold sink heater can be made to escape through the maximum defrost water guide.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP20762539.3A EP3933314A4 (en) | 2019-02-28 | 2020-02-13 | FRIDGE |
US17/434,714 US20220235976A1 (en) | 2019-02-28 | 2020-02-13 | Refrigerator |
CN202080016541.7A CN113490824B (zh) | 2019-02-28 | 2020-02-13 | 冰箱 |
AU2020227567A AU2020227567B2 (en) | 2019-02-28 | 2020-02-13 | Refrigerator |
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KR1020190024360A KR20200105611A (ko) | 2019-02-28 | 2019-02-28 | 냉장고 |
KR10-2019-0024360 | 2019-02-28 |
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WO2020175832A1 true WO2020175832A1 (ko) | 2020-09-03 |
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PCT/KR2020/002078 WO2020175832A1 (ko) | 2019-02-28 | 2020-02-13 | 냉장고 |
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US (1) | US20220235976A1 (ko) |
EP (1) | EP3933314A4 (ko) |
KR (1) | KR20200105611A (ko) |
CN (1) | CN113490824B (ko) |
AU (1) | AU2020227567B2 (ko) |
WO (1) | WO2020175832A1 (ko) |
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WO2023146113A1 (ko) * | 2022-01-28 | 2023-08-03 | 삼성전자주식회사 | 냉장고 및 그 제어 방법 |
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EP3933314A1 (en) | 2022-01-05 |
EP3933314A4 (en) | 2022-11-02 |
CN113490824A (zh) | 2021-10-08 |
AU2020227567B2 (en) | 2023-07-13 |
KR20200105611A (ko) | 2020-09-08 |
US20220235976A1 (en) | 2022-07-28 |
CN113490824B (zh) | 2023-07-25 |
AU2020227567A1 (en) | 2021-10-28 |
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