WO2011001479A1 - 冷蔵庫 - Google Patents
冷蔵庫 Download PDFInfo
- Publication number
- WO2011001479A1 WO2011001479A1 PCT/JP2009/003860 JP2009003860W WO2011001479A1 WO 2011001479 A1 WO2011001479 A1 WO 2011001479A1 JP 2009003860 W JP2009003860 W JP 2009003860W WO 2011001479 A1 WO2011001479 A1 WO 2011001479A1
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- WO
- WIPO (PCT)
- Prior art keywords
- refrigerator
- room
- compartment
- defrosting
- cooler
- 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
- 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
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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
- F25D17/042—Air treating means within refrigerated spaces
- F25D17/045—Air flow control arrangements
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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
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C2400/00—Auxiliary features or devices for producing, working or handling ice
- F25C2400/10—Refrigerator units
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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
- F25D2317/067—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
- 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
- F25D2317/068—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 fans
- F25D2317/0681—Details thereof
Definitions
- the present invention relates to a refrigerator.
- Patent Documents 1 to 3 Conventionally, there are those described in Patent Documents 1 to 3 as refrigerators for adjusting the amount of cold air supplied to the freezer compartment.
- Patent Document 1 describes a freezer compartment air passage, a switching compartment air passage and an ice making air passage, and a refrigerator including a freezing compartment damper, a switching compartment damper and an ice making damper.
- Patent Document 2 describes a refrigerator provided with a cold air adjusting device at the rear of the freezer compartment.
- Patent Document 3 describes a configuration in which the cold air that has passed through the cold air fan is divided up and down, one of which flows in the direction of the freezer compartment duct damper below the cold air fan, and the other flows in the direction of the twin duct damper above the cold air fan. Has been.
- Patent Document 3 has a problem that the flow efficiency of the cold air decreases because the cold air passing through the cold air fan flows in different directions, and the energy saving efficiency cannot be improved.
- the cold air passage and the damper (cold air adjusting device) to the freezing temperature zone chamber are increased in size, and the depth dimension of the cold air passage and the like is increased. Thereby, the subject that storage rooms, such as a freezing temperature zone room, became narrow occurred.
- An object of this invention is to obtain the refrigerator which energy-saving efficiency improves, suppressing the expansion of the depth dimension of a cold air
- a refrigerator includes a refrigerator room, an ice making room, a freezer room, and a cooler storage room in which a cooler is disposed at the rear of the freezer room.
- the refrigerator having a partition plate for partitioning, the internal fan provided above the cooler, and the blower provided between the internal fan and the partition plate and facing the front of the internal fan A cover, an opening provided above the blower cover and above the internal blower, a freezer cooling damper provided at the opening for controlling the amount of cold air to the freezer, and the refrigerator
- a refrigeration chamber cooling damper that is provided rearward and above the freezer compartment cooling damper and controls the amount of cold air to the refrigeration chamber, and the ice making chamber that is provided above the freezer compartment cooling damper and on the partition plate Blow out cold air Having, and mouth out come.
- a refrigeration room provided at the top of the refrigerator body, an ice making room provided below the refrigeration room, a freezing room provided below the ice making room, and a cooler disposed behind the freezing room
- a refrigerator having a partition plate for partitioning the cooler storage chamber, an internal fan provided above the cooler, and the internal fan provided between the internal fan and the partition plate
- a blower cover that faces the front of the blower, a freezer compartment cooling damper that is provided above the blower cover and above the internal blower and controls the amount of cool air to the freezer compartment, and above the freezer compartment cooling damper and A blowout port provided in the partition plate and for blowing cold air into the ice making chamber.
- the internal fan is inclined so that the lower part is closer to the blower cover than the upper part.
- a cold air duct for blowing cold air to the ice making chamber and the freezing chamber is provided between the blower cover and the partition plate.
- the present invention can provide a refrigerator with improved energy saving efficiency while suppressing an increase in the depth of the cold air passage.
- FIG. 2 is a cross-sectional view taken along the line XX in FIG. 1 showing a configuration inside the refrigerator. It is a front view showing the structure in the store
- FIG. 3 is an enlarged explanatory view of a main part of FIG. 2. It is a figure explaining a defrost mode. It is a time chart at the time of defrosting in the defrosting mode 4.
- FIG. 1 is a front outline view of the refrigerator of the present embodiment.
- FIG. 2 is a vertical cross-sectional view taken along the line XX in FIG. 1 showing the configuration inside the refrigerator.
- FIG. 3 is a front view illustrating a configuration inside the refrigerator, and is a diagram illustrating the arrangement of the cold air duct and the outlet.
- FIG. 4 is an enlarged explanatory view of the main part of FIG.
- the refrigerator 1 includes a refrigerator compartment 2, an ice making compartment 3, an upper freezer compartment 4, a lower freezer compartment 5, and a vegetable compartment 6 from above.
- the front opening of the refrigerating room 2 is provided with double-folded refrigerating room doors 2a and 2b (French doors) divided into left and right.
- the ice making room 3, the upper freezing room 4, the lower freezing room 5, and the vegetable room 6 include a drawer type ice making room door 3a, an upper freezing room door 4a, a lower freezing room door 5a, and a vegetable room door 6a.
- the ice making room 3, the upper freezing room 4 and the lower freezing room 5 are each provided with an ice making room door 3a, an upper freezing room door 4a, and a lower freezing room door 5a, but are not partitioned in a heat-insulating manner, and a freezing temperature zone room.
- the ice making unit may be provided in a part of the freezing temperature zone.
- the refrigerator 1 also includes door sensors (not shown) that detect the open / closed state of each door.
- an alarm (not shown) is provided to notify the user when the state determined as “door open” continues for a predetermined time, for example, 1 minute or more.
- a temperature setter (not shown) for setting the temperature of the refrigerator compartment 2, the upper freezer compartment 4, the lower freezer compartment 5, and the like is provided.
- the outside of the refrigerator 1 and the inside of the refrigerator are separated by a heat insulating box 10 formed by filling a foam heat insulating material (foamed polyurethane).
- the heat insulation box 10 of the refrigerator 1 mounts the several vacuum heat insulating material 25, and has aimed at thinning.
- the refrigerator compartment 2 is separated from the upper freezer compartment 4 and the ice making room 3 (see FIG. 1, the ice making room 3 is not shown in FIG. 2) by a heat insulating partition wall 28. Further, the lower freezer compartment 5 and the vegetable compartment 6 are separated by a heat insulating partition wall 29.
- a plurality of door pockets 32 are provided on the inner side of the doors 2a and 2b (see FIG. 1).
- the refrigerator compartment 2 is partitioned into a plurality of storage spaces in the vertical direction by a plurality of shelves 36.
- the upper freezer compartment 4, the lower freezer compartment 5, and the vegetable compartment 6 are respectively moved back and forth integrally with the upper freezer compartment door 4a, the lower freezer compartment door 5a, and the vegetable compartment door 6a.
- 5b, 6b are provided. That is, the storage containers 4b, 5b, and 6b can be pulled out by placing the hands on the handle portions (not shown) of the upper freezer compartment door 4a, the lower freezer compartment door 5a, and the vegetable compartment door 6a and pulling them out to the front side.
- the ice making chamber 3 is also provided with an unillustrated storage container (indicated by (3b) in FIG. 2) integrally with the ice making chamber door 3a, and pulls the handle 3 (not shown) of the door 3a to the front side.
- the storage container 3b can be pulled out.
- the cooler 7 is provided in a cooler storage chamber 8 provided behind the lower freezing chamber 5.
- Air cooled by heat exchange with the cooler 7 (hereinafter referred to as “cold air”) by an internal fan 9 (blower) provided above the cooler 7 is a refrigerator compartment fan duct 11, a vegetable room whose code is omitted.
- the amount of air blown to each storage room is controlled by opening and closing the refrigerator compartment cooling damper 20 and the freezer compartment cooling damper 50.
- the air ducts to the refrigerator compartment 2, the ice making chamber 3, the upper freezer compartment 4, the lower freezer compartment 5 and the vegetable compartment 6 are provided behind the respective storage compartments of the refrigerator 1, as indicated by broken lines in FIG. ing.
- the cold air is sent to the refrigerating room 2 through the refrigerating room air duct 11 through the outlets 2c provided in multiple stages. And it sends to the vegetable compartment 6 from the blower outlet 6c through the vegetable compartment ventilation duct (refer FIG. 3) branched from the refrigerator compartment ventilation duct 11 (1st structure).
- the structure which sends cold air to the vegetable compartment 6 may be sufficient because the refrigerator compartment return duct 16 communicates with the vegetable compartment 6 without branching from the refrigerator compartment ventilation duct 11 (2nd structure).
- the structure which combined said 1st structure and 2nd structure may be sufficient. This is because the vegetable compartment 6 is controlled to be hot and humid as compared to other storage compartments.
- the cold air that has cooled the refrigerator compartment 2 is, for example, from the refrigerator compartment return port 2 d provided on the lower surface of the refrigerator compartment 2, through the refrigerator compartment return duct 16, and the cooler storage compartment 8. Seen from the front, go back to the bottom right. The return air from the vegetable compartment 6 returns to the lower part of the cooler storage compartment 8 through the return opening 6d.
- the freezer cooling damper 50 is omitted, but when the freezer cooling damper 50 is in an open state, the cool air passes through the ice making chamber air duct and the upper freezer room air duct 12 not shown by the internal fan 9. Air is blown from the blowout ports 3c and 4c to the ice making chamber 3 and the upper freezing chamber 4, respectively. Further, the air is blown from the outlet 5 c to the upper freezer compartment 4 through the cold air duct 13.
- the cold air that has cooled the upper freezer room 4, the lower freezer room 5, and the ice making room 3 returns to the cooler storage room 8 via the freezer return port 17 provided in the lower part of the lower freezer room 5.
- the outlets 3c, 4c, 5c are provided in the partition plate 54.
- the partition plate 54 divides the upper freezer compartment 4, the lower freezer compartment 5, the ice making chamber 3, and the cooler storage compartment 8.
- the blower fixing unit 55 partitions the cooler storage chamber 8 and the freezing temperature zone chamber. That is, it is provided between the cooler 7 and the partition plate 54. And the internal fan 9 is attached to this air blower fixing
- the front of the internal fan 9 is covered with a fan cover 56.
- the opening 56a is provided in the upper part of the air blower cover 56, and the freezer compartment cooling damper 50 is provided in this opening 56a.
- the outlet 3 c to the ice making chamber 3 is provided above the freezing chamber cooling damper 50. That is, it arrange
- the cooler 7, the internal fan 9, the freezer compartment cooling damper 50, and the outlet 3 c to the ice making room 3 are arranged so as not to overlap when viewed from the front of the refrigerator 1. Yes. Thereby, it is possible to smoothly flow into the ice making chamber 3 and to suppress a decrease in the internal volume of the storage chamber.
- the internal blower 9 is provided with an inclination so that the cold air flow to the ice making chamber 3 is smooth. Specifically, it is provided such that the upper part of the internal fan 9 is located on the back side as viewed from the front of the refrigerator 1 and the lower part is located on the near side. That is, the internal fan 9 is provided so as to be inclined so that the lower part is closer to the blower cover 56 than the upper part. Then, the cool air heat-exchanged by the cooler 7 is blown into the space between the blower cover 56 and the blower fixing portion 55 by the internal blower 9. Then, the cold air flows upward through this space, and then easily flows through the freezing chamber cooling damper 50 to the outlet 3c to the ice making chamber 3.
- the cold air when the freezer cooling damper 50 is closed, or a part of the cold air when the freezer cooling damper 50 is open does not pass through the freezer cooling damper 50 and is directly placed in the upper freezer cooling damper. 20 is sent to the refrigerated temperature zone.
- an ice making room air duct (not shown), an upper freezer room air duct 12 and a cold air duct 13 are formed between the blower cover 56 and the partition plate 54.
- the ice making room air duct, the upper freezer room air duct 12 and the cold air duct 13 are ducts for sending cold air to the ice making room 3, the upper freezer room 4 and the lower freezer room 5, respectively.
- the cold air that has passed through the freezer cooling damper 50 passes through the ice making fan air duct, the upper freezer air fan duct 12, and the cold air duct 13, and then through the outlets 3c, 4c, and 5c provided in the partition plate 54. They are sent to the ice making chamber 3, the upper freezing chamber 4 and the lower freezing chamber 5, respectively.
- the ice making chamber air duct, the upper freezer compartment air duct 12 and the cold air duct 13 are provided between the ice making room 3, the upper freezer room 4, the lower freezer room 5 and the cooler storage room 8 which are freezing temperature zones. It is the structure provided.
- the ice making chamber air duct, the upper freezer chamber air duct 12, and the cool air duct 13 serve as an air insulation layer. Thereby, even if it is during a defrost operation etc., it can suppress receiving the influence of the high temperature from the defrost heater 22, and can suppress that the temperature of a freezing temperature zone room falls.
- the blower cover 56 has a rectifying unit 56b below the freezer cooling damper 50 and in front of the internal blower 9.
- the rectifying unit 56 b has a conical shape that is recessed toward the center of the internal fan 9 in order to prevent a vortex that is likely to occur at the center of the internal fan 9.
- the rectifying unit 56 b rectifies the turbulent flow caused by the cool air blown out by the internal fan 9 hitting the fan cover 56. That is, the flow swirls around the rectifying unit 56b, and then flows upward (in the direction in which the freezer compartment cooling damper 50 and the refrigerator compartment cooling damper 20 are provided). Thereby, a cool air flow becomes smooth and generation
- the cold air that does not pass through the freezer cooling damper 50 flows to the refrigerating room cooling damper 20 side via the refrigerating room duct 15.
- the cold air toward either the refrigeration temperature zone chamber or the freezing temperature zone chamber is in the same direction immediately after being sent by the internal fan 9.
- the flow of cold air becomes smooth.
- the freezer cooling damper 50 is closed and the refrigerating room cooling damper 20 is opened
- the freezing room cooling damper 50 is opened and the refrigerating room cooling damper 20 is closed
- the freezer cooling damper 50 and the refrigerating room cooling damper are provided.
- the flow of cold air immediately after being sent by the internal fan 9 is in the same direction, so the flow of cold air can be made smooth.
- the amount of cold air is configured to be sent to the freezer compartment cooling damper 50 side.
- the amount of cold air distributed is controlled by adjusting the opening degree of the freezer cooling damper 50 or increasing the opening of the freezer cooling damper 50.
- refrigerator compartment cooling damper 20 is attached to the rear part of the refrigerator compartment 2 as shown in FIG.
- a defrost heater 22 is installed below the cooler 7, and an upper cover 53 is disposed above the defrost heater 22 in order to prevent defrost water from dripping onto the defrost heater 22. Is provided.
- the defrosting heater 22 can vary its output by duty control by the control board 31 described later.
- the defrost water generated by melting the frost adhering to the wall of the cooler 7 and the cooler storage chamber 8 therearound flows into the trough 23 provided at the lower part of the cooler storage chamber 8. Then, it reaches the evaporating dish 21 arranged in the machine room 19 through the drain pipe 27 and evaporates by the heat of the condenser (not shown).
- a cooler temperature sensor 35 attached to the cooler is located in the upper right portion when viewed from the front of the cooler 7, a refrigerator temperature sensor 33 is provided in the refrigerator compartment 2, and a freezer compartment temperature sensor 34 is provided in the lower freezer compartment 5.
- each is provided.
- the temperature of the cooler 7 hereinafter referred to as “cooler temperature”
- the temperature of the refrigerator compartment 2 hereinafter referred to as “refrigerator compartment temperature”
- the temperature of the lower freezer compartment 5 hereinafter referred to as “freezer compartment”. Temperature)).
- the refrigerator 1 is provided with an outside air temperature sensor and an outside air humidity sensor (not shown) that detect a temperature and humidity environment (outside temperature, outside air humidity) outside the refrigerator.
- the vegetable room temperature sensor 33 a may be arranged in the vegetable room 6.
- a machine room 19 is provided on the lower back side of the heat insulation box 10.
- the machine room 19 houses a compressor 24 and a condenser (not shown), and the heat of the condenser is removed by an outside fan (not shown).
- isobutane is used as a refrigerant, and the amount of refrigerant enclosed is as small as about 80 g.
- a control board 31 having a CPU, a memory such as ROM and RAM, an interface circuit, and the like is disposed.
- the control board 31 includes the above-described outside air temperature sensor, outside air humidity sensor, cooler temperature sensor 35, refrigerating room temperature sensor 33, freezing room temperature sensor 34, refrigerating room doors 2a and 2b, ice making room door 3a, and upper freezing room door 4a.
- the width of the freezer compartment return port 17 is substantially equal to the width of the cooler 7.
- the refrigerating room cooling damper 20 when the refrigerating room cooling damper 20 is open and the freezing room cooling damper 50 is closed and only the refrigerating temperature zone room (the refrigerating room 2 and the vegetable room 6) is cooled, the return cold air from the refrigerating room 2 3 flows into the cooler storage chamber 8 from the lower side of the cooler storage chamber 8 via the refrigerating chamber return duct 16 and exchanges heat with the cooler 7 as indicated by an arrow d in FIG.
- the cold air which cooled the vegetable compartment 6 flows into the lower part of the cooler storage chamber 8 through the vegetable compartment return port 6d (refer FIG. 4), as shown in FIG.
- the amount of air from the vegetable room return port 6d is smaller than the amount of air circulating through the freezing temperature zone and the amount of air circulating through the refrigerator compartment 2. Therefore, since the influence on the flow field (hereinafter referred to as “flow field”) indicating the state of the cold air flow in the cooler storage chamber 8 is relatively small, the description thereof is omitted here.
- the cooler storage chamber of each return cold air 8 the inflow direction (angle) to the cooler storage chamber 8, the air volume, and the like are different. Therefore, the flow field formed by the return cold air from the freezing temperature zone chamber and the return cold air from the freezing temperature zone chamber cools only the freezing temperature zone chamber when cooling only the freezing temperature zone chamber. In general, there is a difference between the case where the refrigeration temperature zone chamber and the freezing temperature zone chamber are simultaneously cooled.
- FIG. 5 is a diagram illustrating the defrosting mode.
- FIG. 6 is a time chart at the time of defrosting in the defrosting mode 4.
- the state where the compressor 24 is operating is referred to as “compressor ON”, and the state where the compressor 24 is stopped is referred to as “compressor OFF”.
- the state where the internal fan 9 is operating is referred to as “internal fan ON”, and the state where the internal fan 9 is stopped is referred to as “internal fan OFF”.
- a state where the defrost heater 22 is energized is referred to as “defrost heater ON”, and a state where the defrost heater 22 is not energized is referred to as “defrost heater OFF”.
- the state where the refrigerating room cooling damper 20 is in the open state and the air can be sent to the refrigerating temperature zone is “open refrigerating room cooling damper”, and the refrigerating room cooling damper 20 is in the closed state and the air is sent to the refrigerating temperature zone.
- the blocked state is referred to as “refrigeration chamber cooling damper closed”.
- the state where the freezer cooling damper 50 is open and air can be sent to the freezing temperature zone chamber is “open freezing room cooling damper”, and the freezing chamber cooling damper 50 is closed and air is sent to the freezing temperature zone chamber.
- the blocked state is referred to as “freezer compartment cooling damper closed”.
- a plurality of cooling operation modes are prepared as modes of the normal cooling operation of the refrigerator 1, such as “compressor ON, internal fan ON, refrigerator compartment cooling damper open, freezer compartment cooling damper closed, defrost heater OFF”. This state is referred to as a “refrigeration room cooling operation” mode.
- the normal cooling operation is a control (ON / OFF control) of the compressor 24, the internal fan 9, and the external fan based on the temperatures detected by the refrigerator temperature sensor, the freezer temperature sensor, and the outside air temperature sensor.
- the rotation speed control of the refrigerator compartment 20 and the open / close state of the freezer compartment damper 50 are set to a predetermined temperature (for example, the refrigerator compartment is about 3 ° C., the vegetable compartment is about 5 ° C., the freezer compartment is The operation is maintained at about -18 ° C.
- the vegetable room 6 is treated as a part of the refrigerated room 2, and the description about the vegetable room 6 is omitted.
- the refrigerator 1 of the present embodiment includes six modes of defrost modes 1 to 6 as modes in the defrost operation.
- defrosting modes as shown below the table in FIG. 5, “compressor OFF, internal fan ON, refrigerator cooling fan open, freezer cooling damper closed, defrost heater OFF”
- the defrost mode 1 for performing “defrosting by the internal blower” is referred to as “first defrosting means”.
- defrosting mode 3 for performing “defrosting with an internal fan + defrost heater” of “compressor OFF, internal fan ON, refrigerator cooling fan open, freezer cooling damper closed, defrost heater ON” This is referred to as “second defrosting means”.
- defrosting mode 6 for performing “defrosting by the defrosting heater” of “compressor OFF, internal fan OFF, refrigerator cooling cooler close, freezer cooling damper close, defrost heater ON” is described in the claims. Is referred to as “third defrosting means”.
- the “fourth defrosting means” is a means for performing a defrosting operation by combining one or more of the first defrosting means, the second defrosting means, and the third defrosting means. .
- the defrost mode 2 is a mode which performs the defrost operation by the defrost mode 3 (2nd defrost means) continuously after the defrost operation by the defrost mode 1 (1st defrost means). is there.
- the defrosting mode 4 is performed after the defrosting operation in the defrosting mode 1 (first defrosting means), followed by the defrosting mode 3 (second defrosting means) and the defrosting mode 6 (third defrosting means). In this mode, the defrosting operation is performed by the defrosting means.
- the defrost mode 5 is a mode which performs the defrost operation by the defrost mode 6 (3rd defrost means) continuously after the defrost operation by the defrost mode 3 (2nd defrost means). .
- the mode of the defrosting operation in the refrigerator 1 of the present embodiment is set to the defrosting mode by combining all or a part of the first to third defrosting means.
- the “Combination of defrosting means” column in the table of FIG. 5 combinations of the first to third defrosting means are described so that each defrosting mode can be easily understood.
- the defrosting modes 1 to 6 are under any defrosting completion determination temperature conditions such as the freezer temperature, the refrigerator temperature, and the cooler temperature. Indicates whether each defrost mode is complete.
- the temperature numerical value applied in each mode differs.
- the condition of the cooler temperature shown in the “defrost completion determination condition” column of the table of FIG. 5 corresponds to the defrost completion determination temperature.
- the normal cooling operation has the three types of cooling operation modes described above. Therefore, when continuing the normal cooling operation, in addition to continuing the “freezer compartment cooling operation” mode, two other kinds of cooling operations other than the “freezer compartment cooling operation” mode based on the refrigerator compartment temperature and the freezer compartment temperature. There are also cases where the mode is switched ("refrigeration room cooling operation” mode, "refrigeration room / freezing room simultaneous cooling operation” mode).
- the mode is switched from the "refrigeration compartment cooling operation” mode to the “refrigeration compartment cooling operation” mode, and the refrigerator compartment 2 is quickly cooled to a predetermined temperature. After that, it shifts to the “freezer cooling operation” mode again.
- the control shown in FIG. 6 is as follows. That is, the defrosting mode 4 is selected, the section of “freezing room cooling operation”, the section of the defrosting operation by “first defrosting means”, and the section of the defrosting operation by “second defrosting means” TB , The section TC of the defrosting operation by the “third defrosting means”, the sections TD and TE after the completion of the defrosting operation, and the section of the “normal cooling operation”.
- ON state (160 W) / ON state (80 W) / OFF state of the defrost heater 22 ON / OFF state of the internal fan 9, open / closed state of the cold room cooling damper 20, warehouse
- the ON / OFF state of the inner blower 9, the open / closed state of the freezer cooling damper 50, and the ON / OFF state of the compressor 24 are shown.
- the freezer cooling operation is performed until the refrigerator temperature exceeds 5 ° C.
- the defrosting operation by the first defrosting means (“compressor OFF, internal fan ON, refrigerator compartment cooling damper open, freezer compartment cooling damper closed, defrost heater OFF”) is performed.
- the refrigerator compartment temperature is cooled by the cold heat of the frost,
- the cooler temperature rises due to the heat load of the refrigerator compartment, and the difference between the refrigerator compartment and the condenser temperature gradually decreases.
- the temperature difference between the refrigerator temperature and the cooler temperature becomes small, heat exchange becomes difficult, and therefore, when the defrosting operation by the first defrosting means is continued as it is, the defrosting time becomes long.
- the temperature of the freezer compartment continues to rise during defrosting.
- the defrost heater 22 is turned on so that the defrost heater 22 is turned on so that the return air from the refrigerator compartment 2 is heated and defrosted easily.
- the state of “compressor OFF, internal fan ON, refrigerator freezer cooling damper open, freezer cooler damper closed, defrost heater ON” is the defrosting operation by the second defrosting means in the section TB in FIG.
- the output of the defrost heater 22 in the second defrosting means is 80 W. If this output is in a state where frost remains in the cooler 7, the air after passing through the cooler 7 cools the refrigerator compartment 2.
- the output is a temperature of about 0 to 4 ° C.
- the temperature of the cooler 7 itself at this time is about ⁇ 10 ° C. or less due to evaporation of the liquid refrigerant in the cooler 7.
- the section TB in FIG. 6 is a temperature including frost attached to the fin surface constituting the cooler 7.
- the end of the section TB is performed by the previous cooler temperature sensor 35.
- the rotation speed of the internal fan 9 during the normal cooling operation is about 1600 min ⁇ 1 , and is about 1400 min ⁇ 1 during the defrosting operation by the second defrosting means in the section TB.
- the rotational speed of the internal fan 9 during the defrosting operation by the second defrosting means is changed from that during the normal cooling operation because the air temperature at which the refrigerator compartment 2 can be cooled is about 0 to 4 ° C. It is for adjusting so that it may be obtained.
- the defrosting operation by the second defrosting means of the refrigerator 1 of the present embodiment is adjusted so that an air temperature of about 0 to 4 ° C. that can cool the refrigerator compartment 2 is obtained.
- humidification disclosed in Patent Document 2 and Patent Document 3, it occurred in the case of “compressor OFF, internal fan ON, refrigerator cooling fan open, freezer cooling damper closed, defrost heater ON”.
- the output of the defrost heater 22 in the defrosting operation of “defrosting by the internal fan + defrost heater” is excessive, the air temperature after passing through the cooler higher than the temperature to be kept in the refrigerator compartment 2 is obtained. This is not preferable because the refrigerator compartment 2 is heated.
- the defrosting operation by the second defrosting means is intended to suppress an increase in freezer temperature by shortening the defrosting time, this purpose is achieved if the output of the defrosting heater 22 is too small. Not. Therefore, the output of the defrost heater 22 in the second defrosting means must be appropriate.
- the defrost heater 22 is turned on as well as suppressing the rise in the freezer temperature, the frost is defrosted while cooling the refrigerator room 2 (using the heat load of the refrigerator room 2). Therefore, the amount of energy input from the outside for defrosting can be reduced by the amount using the heat load of the refrigerator compartment 2, and an energy saving effect can be obtained. Furthermore, since the return air from the refrigerator is forced to convection in the cooler 7 by blowing air, the heat transfer efficiency between the air and the frost is good, and there is also an energy saving effect due to the fact that the frost is easily dissolved.
- the internal fan is turned off and the refrigerating room cooling damper is closed, and the output of the defrost heater 22 is changed from 80 W to 160 W.
- the defrosting operation by the third defrosting means “defrosting by the defrosting heater” is performed.
- the cooling heat of the cooler 7 does not have the ability to cool the refrigerator 2 and if the air is further blown, the refrigerator 2 will be warmed.
- “Defrosting by the defrosting heater” is performed to prevent the refrigerator compartment 2 from being warmed, and the cooler 7 is made free from unmelted frost.
- the output of the defrosting heater 22 is increased from 80 W to 160 W.
- section TC of the defrosting operation by the 3rd defrosting means can be shortened, and the rise of the refrigerator compartment temperature and freezer compartment temperature in the meantime can be suppressed small.
- the defrosting operation by the third defrosting means has a lower heat transfer efficiency due to natural convection between the air and the frost in the cooler housing chamber 8 than the defrosting in the blowing state, and the defrosting operation has low energy saving performance. It is a means. However, since the defrosting operation by the third defrosting means is performed from the state that almost all the frost has been melted, that is, the cooler temperature is higher than the refrigerator temperature maintained at the plus temperature, the defrosting operation is performed. The influence of the decrease in energy saving performance due to the defrosting operation by means is relatively small.
- the defrosting mode 4 by combining the defrosting operations by the first to third defrosting means, it is possible to perform defrosting with flexibility and energy saving effect, and shorten the defrosting time. In the meantime, the freezer temperature is prevented from rising.
- the defrosting heater 22 is turned off, and the defrosting operation in the defrosting mode 4 is finished.
- the section TD in FIG. Wait for 5 minutes in the state of “Blower OFF, refrigeration chamber cooling damper closed, freezer compartment cooling damper closed, defrost heater OFF”. Due to this elapsed section TD, the dripping time from the defrosting water cooler 7 and the upper cover 53 (see FIG. 5) to the eaves 23 is secured, the normal cooling operation is resumed in the middle of dripping, and the ice is frozen again. A situation in which a part of the storage chamber 8 is blocked becomes difficult to occur.
- section TE After 5 minutes of the elapsed section TD has elapsed, the process proceeds to section TE.
- this section TE first, only the compressor 24 is turned on (“compressor ON, internal fan OFF, defrost heater OFF, cold room cooling damper closed” , Freezer compartment cooling damper closed “), wait for 2 minutes, and then resume normal cooling operation.
- the waiting time of 2 minutes is such that the cooler 7 whose temperature is high when the defrosting operation in the defrosting mode 4 is finished and the surrounding air are sent to the respective chambers as they are, and This is to make it difficult for the problem of warming the chamber to occur, and is usually provided to cool the interior of the cooler housing chamber 8 before resuming the cooling operation.
- the present invention has the configuration as described above, a refrigerator with improved energy saving efficiency can be obtained by controlling the temperature of the freezer compartment while suppressing the expansion of the depth dimension of the cold air passage. Further, it is possible to obtain a refrigerator capable of ensuring energy saving performance while maintaining the food temperature in the refrigerator within a predetermined temperature range and maintaining the food storage temperature.
- Refrigerator 2 Refrigerated room (refrigerated temperature zone) 3 Ice making room (freezing temperature zone) 4 Upper freezer room (freezing temperature room) 5 Lower freezer compartment (freezing temperature zone) 6 Vegetable room (refrigerated temperature room) 7 Cooler 8 Cooler storage chamber 9 Blower (blower) DESCRIPTION OF SYMBOLS 11 Refrigeration room ventilation duct 12 Upper stage freezing room ventilation duct 13 Cold air duct 15 Refrigeration room duct 17 Freezing room return port 20 Refrigeration room cooling damper 50 Freezer room cooling damper 53 Upper cover 54 Partition plate 55 Blower fixing part 56 Blower cover 56a Opening 56b Rectification Department.
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- Combustion & Propulsion (AREA)
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Abstract
Description
2 冷蔵室(冷蔵温度帯室)
3 製氷室(冷凍温度帯室)
4 上段冷凍室(冷凍温度帯室)
5 下段冷凍室(冷凍温度帯室)
6 野菜室(冷蔵温度帯室)
7 冷却器
8 冷却器収納室
9 庫内送風機(送風機)
11 冷蔵室送風ダクト
12 上段冷凍室送風ダクト
13 冷気ダクト
15 冷蔵室ダクト
17 冷凍室戻り口
20 冷蔵室冷却ダンパ
50 冷凍室冷却ダンパ
53 上部カバー
54 仕切板
55 送風機固定部
56 送風機カバー
56a 開口
56b 整流部。
Claims (8)
- 冷蔵庫本体の上部から順に設けられた冷蔵室,製氷室,冷凍室と、前記冷凍室の後方に冷却器が配置される冷却器収納室を区画する仕切板と、を有する冷蔵庫において、
前記冷却器の上方に設けられた庫内送風機と、
該庫内送風機と前記仕切板との間に設けられ且つ前記庫内送風機の前方に対向する送風機カバーと、
該送風機カバーの上部であって且つ前記庫内送風機より上方に設けられた開口と、
該開口に設けられ前記冷凍室への冷気量を制御する冷凍室冷却ダンパと、
前記冷蔵室の後方且つ該冷凍室冷却ダンパよりも上方に設けられて前記冷蔵室への冷気量を制御する冷蔵室冷却ダンパと、
前記冷凍室冷却ダンパより上方であって且つ前記仕切板に設けられ前記製氷室へ冷気を吹き出す吹き出し口と、を有する冷蔵庫。 - 請求項1において、前記送風機カバーの前記庫内送風機が対向する位置に設けられて冷気を上方に流す整流部を有する冷蔵庫。
- 請求項1において、前記庫内送風機は上部より下部が前記送風機カバーに近くなるように傾斜して設けられた冷蔵庫。
- 請求項1において、前記送風機カバーと前記仕切板との間に前記製氷室及び前記冷凍室へ夫々冷気を送風する冷気ダクトが設けられた冷蔵庫。
- 冷蔵庫本体の上部に設けられた冷蔵室と、該冷蔵室の下方に設けられた製氷室と、該製氷室の下方に設けられた冷凍室と、該冷凍室の後方に冷却器が配置される冷却器収納室を区画する仕切板と、を有する冷蔵庫において、
前記冷却器の上方に設けられた庫内送風機と、
該庫内送風機と前記仕切板との間に設けられ且つ前記庫内送風機の前方に対向する送風機カバーと、
該送風機カバーの上部且つ前記庫内送風機より上方に設けられて前記冷凍室への冷気量を制御する冷凍室冷却ダンパと、
該冷凍室冷却ダンパより上方且つ前記仕切板に設けられ前記製氷室へ冷気を吹き出す吹き出し口と、を有する冷蔵庫。 - 請求項5において、前記送風機カバーの前記庫内送風機が対向する位置に設けられて冷気を上方に流す整流部を有する冷蔵庫。
- 請求項5において、前記庫内送風機は上部より下部が前記送風機カバーに近くなるように傾斜して設けられた冷蔵庫。
- 請求項5において、前記送風機カバーと前記仕切板との間に前記製氷室及び前記冷凍室へ夫々冷気を送風する冷気ダクトが設けられた冷蔵庫。
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CN102914115A (zh) * | 2012-11-20 | 2013-02-06 | 合肥美菱股份有限公司 | 一种风冷直冷相结合的冰箱 |
WO2013143449A1 (zh) * | 2012-03-26 | 2013-10-03 | 海尔集团公司 | 电冰箱及其工作方法 |
EP2584295A3 (en) * | 2011-10-19 | 2015-06-10 | Indesit Company Beyaz Esya Sanayi ve Ticaret Anonim Sirketi | Fluid distribution system providing fluid routing by means of a transfer element |
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CN103930740B (zh) * | 2011-11-10 | 2016-08-24 | 松下电器产业株式会社 | 冷藏库 |
JP5895145B2 (ja) * | 2012-02-07 | 2016-03-30 | パナソニックIpマネジメント株式会社 | 冷蔵庫 |
JP6071427B2 (ja) * | 2012-10-30 | 2017-02-01 | シャープ株式会社 | 冷蔵庫 |
JP2015222131A (ja) * | 2014-05-22 | 2015-12-10 | ハイアールアジア株式会社 | 冷蔵庫 |
CN104990333B (zh) * | 2015-05-21 | 2018-02-02 | 青岛海尔股份有限公司 | 冰箱 |
CN104896828B (zh) * | 2015-05-21 | 2018-02-02 | 青岛海尔股份有限公司 | 冰箱 |
DE102015219326A1 (de) * | 2015-10-07 | 2017-04-13 | BSH Hausgeräte GmbH | No-Frost-Kältegerät |
CN106813440B (zh) * | 2015-11-27 | 2019-10-29 | 日立环球生活方案株式会社 | 冰箱 |
CN107816832B (zh) * | 2016-09-12 | 2021-06-11 | 松下电器产业株式会社 | 冰箱 |
MY201770A (en) * | 2017-01-10 | 2024-03-16 | Mitsubishi Electric Corp | Refrigerator |
AU2017430067B2 (en) * | 2017-09-01 | 2020-11-12 | Mitsubishi Electric Corporation | Refrigerator |
CN108413685A (zh) * | 2018-01-24 | 2018-08-17 | 青岛海尔股份有限公司 | 风冷冰箱及其化霜控制方法 |
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