EP3290836B1 - Dispositif de congélation et de réfrigération et procédé de commande de dégivrage associé - Google Patents

Dispositif de congélation et de réfrigération et procédé de commande de dégivrage associé Download PDF

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Publication number
EP3290836B1
EP3290836B1 EP15890601.6A EP15890601A EP3290836B1 EP 3290836 B1 EP3290836 B1 EP 3290836B1 EP 15890601 A EP15890601 A EP 15890601A EP 3290836 B1 EP3290836 B1 EP 3290836B1
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EP
European Patent Office
Prior art keywords
air
freezing
refrigerating
path
defrosting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP15890601.6A
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German (de)
English (en)
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EP3290836A1 (fr
EP3290836A4 (fr
Inventor
Jian Ma
Haibo TAO
Jianru Liu
Feifei QI
Lisheng JI
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Qingdao Haier Co Ltd
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Qingdao Haier Co Ltd
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Publication date
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Publication of EP3290836A1 publication Critical patent/EP3290836A1/fr
Publication of EP3290836A4 publication Critical patent/EP3290836A4/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/002—Defroster control
    • F25D21/004—Control mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost
    • F25D21/08—Removing frost by electric heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • 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
    • F25D17/065—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 with compartments at different temperatures
    • 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
    • F25D21/02—Detecting the presence of frost or condensate
    • 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
    • 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
    • F25D21/12—Removing frost by hot-fluid circulating system separate from the refrigerant system
    • 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
    • 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
    • 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
    • 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
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/10—Sensors measuring the temperature of the evaporator

Definitions

  • the present invention is related to defrosting technologies of evaporators, and more particularly, to a freezing and refrigerating device and a defrosting control method thereof.
  • a freezing and refrigerating device such as a fridge or the like
  • the surface of its evaporator frosts.
  • the frost affects the heat exchange between the evaporator and the air inside the fridge and reduces the refrigerating efficiency of the evaporator. Therefore, defrosting must be performed after the fridge operates for a certain period.
  • a first aspect of this invention aims to overcome at least one defect of existing freezing and refrigerating devices, and provides a freezing and refrigerating device.
  • the freezing and refrigerating device of this invention can discharge the hot air generated by defrosting out of the freezing and refrigerating device, so that temperature rise in the storage compartment due to the defrosting hot air can be avoided, preservation time of food is extended and the energy consumption of the freezing and refrigerating device is reduced.
  • a further object of the first aspect of this invention is to shorten the defrosting time of the freezing and refrigerating device to improve the defrosting effect.
  • Another object of the first aspect of this invention is to automatically stop the defrosting for the evaporator.
  • One object of a second aspect of this invention is to provide a defrosting control method of a freezing and refrigerating device.
  • this invention provides a freezing and refrigerating device, comprising a box body and a door body pivotably connected to the box body, wherein inside the box body are defined: at least one storage compartment for storing articles; an air supply path configured to supply cooling air flow to the at least one storage compartment; an air return path configured to allow the air flow from the at least one storage compartment to pass; a cooling chamber which communicates with the air supply path and the air return path, and contains an evaporator for cooling the air entering the cooling chamber from the air return path, a blower for driving the air inside the cooling chamber to flow towards the air supply path and a defrosting heater provided on the evaporator; and an air discharging path communicating with the cooling chamber and an ambient space so that the air in the cooling chamber is directly discharged to the ambient space, wherein the air supply path and the air return path are respectively provided with an air supply door and an air discharging door for selectively connecting or blocking the air supply path and the air return path.
  • the at least one storage compartment comprises a refrigerating compartment and a freezing compartment that are provided in a vertical direction relative to each other, and the cooling chamber is located behind the freezing compartment and is separated therefrom by a rear cover plate of the freezing compartment.
  • the air supply path comprises a refrigerating air feeding passage located behind the refrigerating compartment and a freezing air inlet provided at the rear cover plate of the freezing compartment
  • the air supply door comprises a refrigerating air feeding door provided inside the refrigerating air feeding passage and a freezing air feeding door provided at the freezing air inlet.
  • the air discharging path is provided with an air discharging pump therein for driving the air in the cooling chamber to flow towards the ambient space.
  • one end of the air discharging path communicating with the cooling chamber is located downstream of the blower in the air flowing direction.
  • the air return path comprises a refrigerating air return passage, which extends from the bottom of the refrigerating compartment to an air return opening part of the cooling chamber and intersects with the air discharging path; and the air discharging door is provided at an intersection of the refrigerating air return passage and the air discharging path, such that when the air discharging door is in a first state, the refrigerating air return passage is connected and the air discharging path is blocked, and when the air discharging door is in a second state, the refrigerating air return passage is blocked and the air discharging path is connected.
  • a top of the evaporator is provided with a first temperature sensor to detect a temperature of the top of the evaporator.
  • the defrosting heater is provided on the bottom of the evaporator and faces a groove provided in the bottom of the cooling chamber, such that defrosting water generated during defrosting flows into a water collecting box provided at the bottom of the box body via a water discharging pipe communicating with the groove.
  • this invention also provides a defrosting control method of a freezing and refrigerating device, the method comprising: step A: receiving a defrosting signal instructing the evaporator of the freezing and refrigerating device to perform defrosting; step B: starting the defrosting heater located on the evaporator; step C: closing the air supply door located in the air supply path of the freezing and refrigerating device to block the air supply path; and step D: opening the air discharging door located in the air discharging path of the freezing and refrigerating device to connect the air discharging path, such that hot air generated by the defrosting heater when performing heating and defrosting is directly discharged to the ambient space via the air discharging path.
  • the method further comprises step E: starting the air discharging pump in the air discharging path to drive the hot air in the cooling chamber to be discharged to the ambient space via the air discharging path.
  • the method further comprises step F: when the temperature of the top of the evaporator reaches a first predetermined temperature, stopping the defrosting heater.
  • the method further comprises step G: when the defrosting heater is stopped for a predetermined time period, closing the air discharging pump and the air discharging door.
  • the air supply door can block the air supply path, preventing the hot air generated when the defrosting heater heats and defrosts from flowing into the storage compartment via the air supply path.
  • the air discharging path can be opened by the air discharging door, so that hot air generated by defrosting is directly discharged to the ambient space via the air discharging path.
  • the freezing and refrigerating device of this invention can prevent the temperature in the storage compartment from increasing due to the defrosting hot air, and extend the preservation time of food.
  • the defrosting operations of the evaporator hardly affect the temperature in the storage compartment. After the defrosting for the evaporator ends, if refrigerating is performed to the storage compartment again, the temperature in the storage compartment can be restored to the temperature before the defrosting is performed in a short period, thereby reducing the energy consumption of the freezing and refrigerating device.
  • the air discharging path is provided with an air discharging pump therein for driving the air in the cooling chamber to flow towards the ambient space
  • the hot air generated by defrosting can be discharged in time, improving the air flow, shortening the defrosting time of the freezing and refrigerating device and improving the defrosting effect.
  • the defrosting condition can be determined.
  • the defrosting heater is stopped, thereby automatically stopping the defrosting operations for the evaporator.
  • Fig. 1 is a schematic view of a freezing and refrigerating device according to an embodiment of this invention.
  • the freezing and refrigerating device 1 comprises a box body 100 and a door body 200 pivotably connected to the box body 100.
  • Inside the box body 100 are defined: at least one storage compartment for storing articles, an air supply path, an air return path and a cooling chamber 40.
  • the air supply path is configured to supply cooling air flow to the at least one storage compartment.
  • the air return path is configured to allow the air flow from the at least one storage compartment to pass.
  • the cooling chamber 40 communicates with the air supply path and the air return path, and contains an evaporator 41 for cooling the air entering the cooling chamber 40 from the air return path, a blower 42 for driving the air inside the cooling chamber 40 to flow towards the air supply path and a defrosting heater 43 provided on the evaporator.
  • the box body 100 further defines an air discharging path 50 communicating with the cooling chamber 40 and an ambient space, so that the air in the cooling chamber 40 can be directly discharged to the ambient space.
  • the air supply path and the air discharging path 50 are respectively provided therein with an air supply door and an air discharging door 51 respectively to selectively connect or block the air supply path and the air discharging path 50.
  • the air supply path communicating with the cooling chamber 40 and the storage compartment is provided with an air supply door
  • the air discharging path 50 communicating with the cooling chamber 40 and the ambient space is provided with an air discharging door 51
  • the air supply door can block the air supply path, preventing the hot air generated when the defrosting heater 43 heats and defrosts from flowing into the storage compartment via the air supply path.
  • the air discharging path 50 can be opened by the air discharging door 51, so that hot air generated by defrosting is directly discharged to the ambient space via the air discharging path 50.
  • the freezing and refrigerating device 1 of this invention can prevent the temperature in the storage compartment from increasing due to the defrosting hot air, and extend the preservation time of food.
  • the defrosting operations of the evaporator 41 hardly affect the temperature in the storage compartment. After the defrosting for the evaporator 41 ends, if refrigerating is performed to the storage compartment again, the temperature in the storage compartment can be restored to the temperature before the defrosting is performed in a short period, thereby reducing the energy consumption of the freezing and refrigerating device 1.
  • one end of the air discharging path 50 communicating with the cooling chamber 40 is located downstream of the blower 42 in the air flowing direction.
  • the blower 42 may continue working at a low power to drive the hot air generated by defrosting to be discharged to the ambient space via the air discharging path 50 located downstream of the blower 42, saving an additional driving member and simplifying the structure of the freezing and refrigerating device 1.
  • the at least one storage compartment comprises a refrigerating compartment 11 and a freezing compartment 12 that are provided in a vertical direction relative to each other, and the cooling chamber 40 is located behind the freezing compartment 12 and is separated therefrom by a rear cover plate 121 of the freezing compartment 12.
  • the air supply path comprises a refrigerating air feeding passage 211 located behind the refrigerating compartment 11 and a freezing air inlet 212 provided at the rear cover plate 121 of the freezing compartment 12, and the air supply door comprises a refrigerating air feeding door 221 provided inside the refrigerating air feeding passage 211 and a freezing air feeding door 222 provided at the freezing air inlet 212. That is, in the embodiments of this invention, the cooling chamber 40 communicates with the refrigerating compartment 11 and the freezing compartment 12 via the refrigerating air feeding passage 211 and the freezing air inlet 212 respectively.
  • the cooling chamber 40 comprises an air feeding opening part communicating with the air supply path to supply cooling air flow to the at least one storage compartment via the air feeding opening part.
  • the air feeding opening part comprises a refrigerating air feeding opening communicating with an air inlet end of the refrigerating air feeding passage 211 and a freezing air feeding opening communicating with the freezing air inlet 212.
  • the refrigerating air feeding opening and the freezing air feeding opening are located downstream of the evaporator 41 in the air flowing direction to allow the air cooled by the evaporator 41 to pass.
  • the refrigerating air feeding door 221 may be provided at the air inlet end of the refrigerating air feeding passage 211. Those skilled in the art shall understand that in other embodiments of this invention, the refrigerating air feeding door 221 may be provided at any position in the refrigerating air feeding passage 211, or at an air inlet of the refrigerating compartment 11.
  • the air return passage may comprise a refrigerating air return passage 31 and a freezing air return passage 32.
  • the air return opening part of the cooling chamber 40 may comprise a refrigerating air return opening communicating with the refrigerating air return passage 31 and a freezing air return opening communicating with the freezing air return passage 32.
  • the air return opening part is located upstream of the evaporator 41 in the air flowing direction, or the refrigerating air return opening and the freezing air return opening are located upstream of the evaporator 41 in the air flowing direction, to guide the air from the refrigerating compartment 11 and the freezing compartment 12 to the evaporator 41 for cooling.
  • the refrigerating air return passage 31 extends from the bottom of the refrigerating compartment 11 to the air return opening part of the cooling chamber 40.
  • the refrigerating air return passage 31 is located behind the cooling chamber 40, and intersects with the air discharging path 50 communicating with the cooling chamber 40 and the ambient space.
  • the air discharging door 51 is provided at an intersection of the refrigerating air return passage 31 and the air discharging path 50, such that when the air discharging door 51 is in a first state (a closed state), the refrigerating air return passage 31 is connected and the air discharging path 50 is blocked, and when the air discharging door 51 is in a second state (an opened state), the refrigerating air return passage 31 is blocked and the air discharging path 50 is connected.
  • the air discharging door 51 can simultaneously control the connecting or blocking of the refrigerating air return passage 31 and the air discharging path 50, reducing the number of air doors and simplifying the structure of the freezing and refrigerating device 1 to some extent.
  • a top of the evaporator 41 is provided with a first temperature sensor 411 to detect a temperature of the top of the evaporator 41.
  • a first temperature sensor 411 to detect a temperature of the top of the evaporator 41.
  • the defrosting heater 43 can be controlled automatically to stop heating the evaporator 41 based on the temperature data detected by the first temperature sensor 411 to realize smart control.
  • rear cover plates of the refrigerating compartment 11 and the freezing compartment 12 may be provided with second and third temperature sensors 111, 122 to detect the temperatures in the refrigerating compartment 11 and the freezing compartment 12 respectively.
  • the defrosting heater 43 may be provided on the bottom of the evaporator 41 and faces a groove 44 provided in the bottom of the cooling chamber 40, such that defrosting water generated during defrosting flows into a water collecting box 80 provided at the bottom of the box body 100 via a water discharging pipe 70 communicating with the groove 44.
  • the water collecting box 80 is provided on a compressor 90. When the compressor 90 works, water in the water collecting box 80 is evaporated by the heat generated by the compressor.
  • Fig. 2 is a schematic view of a freezing and refrigerating device in a refrigerating state according to an embodiment of this invention.
  • the arrows in this figure represent the air flowing directions.
  • the compressor 90, the evaporator 41 and the blower 42 are in operation states.
  • the refrigerating air feeding door 221 and the freezing air feeding door 222 are opened to connect the refrigerating air feeding passage 211 and the freezing air inlet 212 respectively.
  • the air flow cooled by the evaporator 41 sequentially passes the freezing air feeding opening, the air supply door and the air supply path of the cooling chamber 40, and flows into the storage compartment.
  • the cooling air flow sequentially passes the refrigerating air feeding opening, the refrigerating air feeding door 221, the refrigerating air feeding passage 211 and the air inlet of the refrigerating compartment, and flows into the refrigerating compartment 11.
  • the cooling air flow sequentially passes the freezing air feeding opening, the freezing air feeding door 222, the freezing air feeding inlet 212, and flows into the freezing compartment 12.
  • the air in the storage compartment passes the air return path to return to the cooling chamber, is cooled by the evaporator 41 and flows into the storage compartment again. Thus, the air circulation path is formed.
  • the air in the refrigerating compartment 11 passes the refrigerating air return passage 31 to return to the air return opening part of the cooling chamber 40, is cooled by the evaporator 41 and flows into the refrigerating compartment 11 again.
  • the air circulation path in the refrigerating compartment 11 is formed.
  • the air in the freezing compartment 12 passes the freezing air return passage 32 to return to the air return opening part of the cooling chamber 40, is cooled by the evaporator 41 and flows into the freezing compartment 12 again.
  • the air circulation path in the freezing compartment 12 is formed.
  • the air discharging door 51 is closed to block the air discharging path 50 and prevent the air flow cooled by the evaporator 41 from flowing to the ambient space.
  • the freezing and refrigerating device 1 may control the refrigerating air feeding door 221 to close; when the third temperature sensor 122 detects that the temperature in the freezing compartment 12 reaches a third predetermined value, the freezing and refrigerating device 1 may control the freezing air feeding door 222 to close, thereby realizing automatic control of the cooling of the storage compartment.
  • Fig. 3 is a schematic view of a freezing and refrigerating device in a defrosting state according to an embodiment of this invention.
  • the arrows in this figure represent the air flowing directions.
  • the compressor 90 and the evaporator 41 are stopped.
  • the defrosting heater 43 is started to heat the evaporator 41.
  • the air discharging door 51 is opened, such that the hot air generated by defrosting is directly discharged to the ambient space via the air discharging path 50.
  • the refrigerating air feeding door 221 and the freezing air feeding door 222 are closed to block the refrigerating air feeding passage 211 and the freezing air inlet 212, preventing the hot air generated by defrosting from entering the refrigerating compartment 11 and the freezing compartment 12 and avoiding influence to food preservation due to temperature fluctuations.
  • the air in the ambient space may sequentially pass the water collecting box 80, the water discharging pipe 70 and the groove 44 to enter the cooling chamber 40, thereby forming an air circulation path when performing defrosting to the evaporator 41.
  • the blower 42 may stop, and the hot air generated during defrosting may be discharged to the ambient space via the air discharging path 50 in a natural heat radiation manner.
  • the blower 42 may work at a low power, so that the hot air generated during defrosting is discharged to the ambient space via the air discharging path 50 in a compulsory manner.
  • Fig. 4 is a schematic view of a freezing and refrigerating device in an air discharging state according to another embodiment of this invention.
  • the air discharging path 50 is provided with an air discharging pump 52 therein for driving the air in the cooling chamber 40 to flow towards the ambient space.
  • One end of the air discharging path 50 communicating with the cooling chamber 40 may be located upstream or downstream of the blower 42 in the air flowing direction.
  • the air discharging pump 52 may be started to drive the hot air generated during defrosting to be discharged to the ambient space via the air discharging path 50.
  • the blower 42 may stop.
  • Other structural features of the freezing and refrigerating device 1 in this embodiment of this invention are the same as those in the embodiment shown in Fig. 1 , and will not be repeated.
  • Fig. 5 is a schematic view of a freezing and refrigerating device according to yet another embodiment of this invention.
  • the at least one storage compartment comprises a freezing compartment 12, and the cooling chamber 40 is located behind the freezing compartment 12.
  • the air supply path comprises a freezing air inlet 212 provided at the rear cover plate 121 of the freezing compartment 12.
  • the air return path comprises a freezing air return passage 32 located at the bottom of the freezing compartment 12.
  • the air supply door comprises a freezing air feeding door 222 provided at the freezing air inlet 212.
  • Other structural features of the freezing and refrigerating device 1 in this embodiment of this invention are the same as those in the embodiment shown in Fig. 1 , and will not be repeated.
  • Fig. 6 is a flow chart of a defrosting control method of a freezing and refrigerating device according to an embodiment of this invention.
  • the defrosting control method comprises: step A: receiving a defrosting signal instructing the evaporator 41 of the freezing and refrigerating device 1 to perform defrosting; step B: starting the defrosting heater 43 located on the evaporator 41; step C: closing the air supply door located in the air supply path of the freezing and refrigerating device 1 to block the air supply path; and step D: opening the air discharging door 51 located in the air discharging path 50 of the freezing and refrigerating device 1 to connect the air discharging path 50, such that hot air generated by the defrosting heater 43 when performing heating and defrosting is directly discharged to the ambient space via the air discharging path 50.
  • the air supply door may be closed, and then the air discharging door 51 is opened; or the air discharging door 51 is opened first, and then the air supply door is closed.
  • Fig. 7 is a flow chart of a defrosting control method of a freezing and refrigerating device according to another embodiment of this invention.
  • the method further comprises step E: starting the air discharging pump 52 in the air discharging path 50 to drive the hot air in the cooling chamber 40 to be discharged to the ambient space via the air discharging path 50.
  • the blower may stop at this time, and only the air discharging pump 52 drives the air flow.
  • the method further comprises step F: when the temperature of the top of the evaporator 41 reaches a first predetermined temperature, stopping the defrosting heater 43.
  • the first temperature sensor 411 provided at the top of the evaporator 41 may detect the temperature of the top of the evaporator 41.
  • the first predetermined temperature may be the temperature when defrosting for the evaporator 41 ends.
  • the method further comprises step G: when the defrosting heater 43 is stopped for a predetermined time period, closing the air discharging pump 52 and the air discharging door 51.
  • the hot air generated during defrosting of the evaporator 41 is basically completely discharged to the ambient space. Closing the air discharging pump 52 and the air discharging door 51 at this time can prevent excessive heat exchange between the air in the freezing and refrigerating device and the air in the ambient space, and improve the cooling performance of the freezing and refrigerating device.
  • the freezing and refrigerating device 1 of this invention may be a fridge, a refrigerating cabinet, a wine cabinet, a refrigerating tank or other devices having a freezing or refrigerating function or having a freezing or refrigerating compartment.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Defrosting Systems (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Claims (9)

  1. Dispositif de congélation et de réfrigération (1), comprenant un corps de cuve (100) et un corps de porte (200) raccordé de manière pivotante au corps de cuve, dans lequel à l'intérieur du corps de cuve sont définis :
    au moins un compartiment de stockage pour stocker des articles ;
    un trajet de fourniture d'air configuré pour fournir un flux d'air de refroidissement à l'au moins un compartiment de stockage ;
    un trajet de reprise d'air configuré pour permettre au flux d'air provenant de l'au moins un compartiment de stockage de passer ;
    une chambre de refroidissement (40) qui communique avec le trajet de fourniture d'air et le trajet de reprise d'air, et contient un évaporateur (41) pour refroidir l'air entrant dans la chambre de refroidissement (40) en provenance du trajet de reprise d'air, une soufflante (42) pour entraîner l'air à l'intérieur de la chambre de refroidissement (40) à circuler vers le trajet de fourniture d'air et un élément chauffant de dégivrage (43) prévu sur l'évaporateur ; et
    un trajet d'évacuation d'air (50) communiquant avec la chambre de refroidissement (40) et un espace ambiant de telle sorte que l'air dans la chambre de refroidissement (40) est évacué directement vers l'espace ambiant, dans lequel
    le trajet de fourniture d'air et le trajet de reprise d'air sont respectivement munis d'une porte de fourniture d'air et d'une trappe d'évacuation d'air (51) pour raccorder ou bloquer sélectivement le trajet de fourniture d'air et le trajet de reprise d'air,
    dans lequel l'au moins un compartiment de stockage comprend un compartiment de réfrigération (11) et un compartiment de congélation (12) qui sont prévus dans une direction verticale l'un par rapport à l'autre, et la chambre de refroidissement (40) est située derrière le compartiment de congélation (12) et est séparée de celui-ci par une plaque de couverture arrière (121) du compartiment de congélation (12), caractérisé en ce que
    le trajet de fourniture d'air comprend un passage d'apport d'air de réfrigération (211) situé derrière le compartiment de réfrigération (11) et une entrée d'air de congélation (212) prévue au niveau de la plaque de couverture arrière (121) du compartiment de congélation (12), et la porte de fourniture d'air comprend une porte d'apport d'air de réfrigération (221) prévue à l'intérieur du passage d'apport d'air de réfrigération (211) et une porte d'apport d'air de congélation (222) prévue au niveau de l'entrée d'air de congélation (212).
  2. Dispositif de congélation et de réfrigération selon la revendication 1, dans lequel le trajet d'évacuation d'air (50) est muni d'une pompe d'évacuation d'air (52) en son sein pour entraîner l'air dans la chambre de refroidissement (40) à circuler vers l'espace ambiant.
  3. Dispositif de congélation et de réfrigération selon la revendication 1, dans lequel une extrémité du trajet d'évacuation d'air (50) communiquant avec la chambre de refroidissement (40) est située en aval de la soufflante (42) dans la direction de circulation d'air.
  4. Dispositif de congélation et de réfrigération selon la revendication 1, dans lequel le trajet de reprise d'air comprend un passage de reprise d'air de réfrigération (31), qui s'étend de la base du compartiment de réfrigération (11) à une partie d'ouverture de reprise d'air de la chambre de refroidissement (40) et croise le trajet d'évacuation d'air (50) ; et
    la trappe d'évacuation d'air (51) est prévue à une intersection du passage de reprise d'air de réfrigération (31) et du trajet d'évacuation d'air (50), de telle sorte que, lorsque la trappe d'évacuation d'air (51) se trouve dans un premier état, le passage de reprise d'air de réfrigération (31) est raccordé et le trajet d'évacuation d'air (50) est bloqué, et lorsque la trappe d'évacuation d'air (51) se trouve dans un second état, le passage de reprise d'air de réfrigération (31) est bloqué et le trajet d'évacuation d'air (150) est raccordé.
  5. Dispositif de congélation et de réfrigération selon la revendication 1, dans lequel un sommet de l'évaporateur (41) est muni d'un premier capteur de température (411) pour détecter une température du sommet de l'évaporateur (41).
  6. Dispositif de congélation et de réfrigération selon la revendication 1, dans lequel l'élément chauffant de dégivrage (43) est prévu sur la base de l'évaporateur (41) et fait face à une rainure (44) prévue dans la base de la chambre de refroidissement (40), de telle sorte que de l'eau de dégivrage générée au cours du dégivrage s'écoule dans la cuve de collecte d'eau (80) prévue au niveau de la base du corps de cuve (100) via un tuyau d'évacuation d'eau (70) communiquant avec la rainure (44).
  7. Procédé de commande de dégivrage d'un dispositif de congélation et de réfrigération (1) selon l'une quelconque des revendications 1 à 6, le procédé comprenant :
    étape A : la réception d'un signal de dégivrage ordonnant à l'évaporateur (41) du dispositif de congélation et de réfrigération (1) de réaliser un dégivrage ;
    étape B : le démarrage de l'élément chauffant de dégivrage (43) situé sur l'évaporateur (41) ;
    étape C : la fermeture de la porte de fourniture d'air située dans le trajet de fourniture d'air du dispositif de congélation et de réfrigération (1) pour bloquer le trajet de fourniture d'air ; et
    étape D : l'ouverture de la trappe d'évacuation d'air (51) située dans le trajet d'évacuation d'air (50) du dispositif de congélation et de réfrigération (1) pour raccorder le trajet d'évacuation d'air (50), de telle sorte que de l'air chaud généré par l'élément chauffant de dégivrage (43) lors de la réalisation d'un chauffage et d'un dégivrage est directement évacué vers l'espace ambiant via le trajet d'évacuation d'air (50), caractérisé par
    après l'étape D, une étape supplémentaire E : le démarrage de la pompe d'évacuation d'air (52) dans le trajet d'évacuation d'air pour entraîner l'air chaud dans la chambre de refroidissement (40) à être évacué vers l'espace ambiant via le trajet d'évacuation d'air (50).
  8. Procédé de commande de dégivrage selon la revendication 7, comprenant en outre, après l'étape E, l'étape F : lorsque la température du sommet de l'évaporateur (41) atteint une première température prédéterminée, l'arrêt de l'élément chauffant de dégivrage (43).
  9. Procédé de commande de dégivrage selon la revendication 8, comprenant en outre, après l'étape F, l'étape G : lors de l'arrêt de l'élément chauffant de dégivrage (43) pendant une période prédéterminée, la fermeture de la pompe d'évacuation d'air (52) et de la trappe d'évacuation d'air (51).
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CN104807279A (zh) 2015-07-29
EP3290836A4 (fr) 2018-07-25
US20170241696A1 (en) 2017-08-24

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