CN110671884A - Air supply control method for defrosting of air-cooled refrigerator and air-cooled refrigerator - Google Patents
Air supply control method for defrosting of air-cooled refrigerator and air-cooled refrigerator Download PDFInfo
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- CN110671884A CN110671884A CN201910931850.6A CN201910931850A CN110671884A CN 110671884 A CN110671884 A CN 110671884A CN 201910931850 A CN201910931850 A CN 201910931850A CN 110671884 A CN110671884 A CN 110671884A
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- air
- air supply
- defrosting
- opening
- evaporator
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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
- F25D29/00—Arrangement or mounting of control or safety devices
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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
- 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
- F25D17/067—Evaporator fan 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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
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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
Abstract
The invention provides an air supply control method for defrosting of an air-cooled refrigerator, wherein the air-cooled refrigerator is provided with an evaporator on an air supply flow path, an air supply outlet for supplying cold air to a cooling chamber and an air supply fan positioned at the air supply outlet or in the air supply flow path between the air supply outlet and an evaporator outlet are arranged at the downstream of the air supply flow path of the evaporator, and the air pressure of a reverse air supply flow path is formed by reversing the air supply fan during defrosting and/or during recovery after defrosting, so that hot air generated in the defrosting process of the evaporator is prevented from flowing into the cooling chamber through the air supply outlet and the air supply fan. The invention also provides the air-cooled refrigerator. The control method and the air-cooled refrigerator can effectively avoid the return rise of the indoor air temperature during defrosting and cooling in the recovery period.
Description
Technical Field
The invention relates to the field of refrigerators, in particular to an air supply control method for defrosting of an air-cooled refrigerator and the air-cooled refrigerator.
Background
The frostless refrigerator has an automatic defrosting function, and at present, all manufacturers commonly use a control mode that a refrigeration air door and a freezing fan are closed in a defrosting and recovery period, and electric heating is switched on until defrosting is finished. The control mode can avoid the problem that the temperature of the non-freezing chamber rises again because hot air enters the non-freezing chamber through the air suction opening of the fan during defrosting and recovery periods. However, the above control method still can not avoid the problem that the temperature of the freezing chamber rises again when hot air enters the freezing chamber through the air outlet of the freezing chamber during defrosting and recovery.
In conclusion, the hot air enters the freezing chamber through the air outlet of the freezing chamber during defrosting and recovery periods of the frost-free refrigerator, so that the temperature of the freezing chamber rises back to exceed the storage temperature limit value, and the storage temperature is unqualified. The hot gas enters the freezing chamber in the defrosting and recovery period, so that the starting time of the compressor is prolonged in the precooling period after the operation of the defrosting heater is finished, and the power consumption of the refrigerator is increased. It is therefore desirable to provide a method and refrigerator that effectively avoids the return of air temperatures in the freezer compartment and the non-freezer compartment during the defrosting and recovery periods.
Disclosure of Invention
In view of the above, the present invention provides an air supply control method for defrosting an air-cooled refrigerator and an air-cooled refrigerator, to solve the above problems, specifically:
the invention provides a first aspect discloses an air supply control method for defrosting of an air-cooled refrigerator, wherein the air-cooled refrigerator is provided with an evaporator on an air supply flow path, an air supply outlet for supplying cold air to a cooling compartment and an air supply fan of the air supply flow path positioned at the air supply outlet or between the air supply outlet and an evaporator outlet are arranged at the downstream of the air supply flow path of the evaporator,
and during defrosting and/or during recovery after defrosting, the reverse air supply fan forms air pressure of a reverse air supply flow path to prevent hot air generated in the defrosting process of the evaporator from flowing into the cooling chamber through the air supply outlet and the air supply fan.
Preferably, the method further comprises: before defrosting and/or before the recovery period after defrosting, closing an air distribution opening of the cooling chamber, wherein the air distribution opening distributes the cold air supplied by the air supply opening to the cooling chamber.
Preferably, the air distribution ports comprise a first air distribution port arranged on the wall of a non-freezing compartment in the cooling compartment and/or a second air distribution port arranged on the wall of a freezing compartment in the cooling compartment; the air distribution opening for closing the cooling chamber further comprises: and closing a first air distribution opening arranged in the non-freezing chamber of the cooling chamber and/or a second air distribution opening arranged in the freezing chamber of the cooling chamber.
Preferably, when the air supply fan is reversely rotated, the rotating speed of the air supply fan is adjusted in real time according to the temperature of an air distribution duct formed among the first air distribution opening, the second air distribution opening and the air supply opening,
when the temperature of the air distribution duct rises, the reverse rotation speed is increased; otherwise, the reverse rotation speed is reduced.
The second aspect of the invention discloses an air-cooled refrigerator, wherein an evaporator is arranged on an air supply flow path, an air supply outlet for supplying cold air to a cooling compartment and an air supply fan which is arranged at the air supply outlet or is arranged in the air supply flow path between the air supply outlet and an outlet of the evaporator are arranged at the lower part of the air supply flow path of the evaporator,
the air supply fan is also used for reversely forming air pressure to prevent air pressure of the reverse air supply flow path when the air pressure is prevented from being defrosted during defrosting and/or during recovery after defrosting so as to prevent hot air generated in the defrosting process of the evaporator from flowing into the cooling chamber through the air supply opening and the air supply fan;
and the control unit is used for controlling the reverse rotation of the air supply fan and adjusting the rotating speed during defrosting and/or during recovery after defrosting.
Preferably, the air-cooled refrigerator further comprises:
the air distribution port distributes the cold air supplied by the air supply port to the cooling chamber and comprises a first air distribution port arranged on the wall of a non-freezing chamber in the cooling chamber and/or a second air distribution port arranged on the wall of a freezing chamber in the cooling chamber;
a temperature monitoring unit for monitoring the temperature in an air distribution duct formed between an air distribution opening and an air supply opening of the cooling chamber and sending the temperature to the control unit,
when the freezing fan rotates reversely, the control unit controls the rotating speed of the freezing fan according to the temperature in the air distribution duct.
Preferably, the cooling compartment comprises: a non-freezing compartment and a freezing compartment,
wherein the non-freezing chamber is positioned above the freezing chamber, a first air distribution port is arranged on the wall of the non-freezing chamber, a second air distribution port is arranged on the wall of the freezing chamber, and an air distribution air duct is formed between the first air distribution port and the air supply port and between the second air distribution port and the air supply port.
Preferably, the first air distribution port and the second air distribution port are respectively provided with an air door.
Preferably, the bottom of the wall of the freezing chamber is provided with a second air return opening, the top of the wall of the non-freezing chamber is provided with a first air return opening, the first air return opening is connected with the inlet of an air return duct, the outlet of the air return duct and the second air return opening of the freezing chamber are connected with the inlet of an air supply duct, the outlet of the air supply duct is connected with an air supply opening and an air supply fan, and the evaporator is arranged in the air supply duct and is positioned below the air supply opening.
Preferably, the defrosting refrigerator further comprises: the defrosting heater is arranged in the air supply duct and is positioned below the evaporator, and the defrosting heater adopts an electric heating mode.
The invention adopts the control mode of reverse rotation of the fan in the defrosting and recovery period, thereby avoiding the problem that the temperature of the freezing chamber rises back to exceed the national standard limit value because hot air enters the air supply duct through the air suction port of the fan and then enters the freezing chamber in the defrosting and recovery period. And relatively, only the refrigerating air door is closed until defrosting is finished, the temperature rise of the room is smaller, the storage temperature requirement is more easily met, and the power consumption of the refrigerator is smaller. In addition, a damper can be arranged in the freezing chamber for further optimization.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely some embodiments of the present disclosure, and other drawings may be derived from those drawings by those of ordinary skill in the art without inventive effort.
Fig. 1 is a schematic structural diagram of a defrosting and recovery period of a refrigerator according to an embodiment of the present invention.
In the figure: 1-an air supply fan; 2-an air supply outlet; 3-a first air distribution opening; 4-a second air distribution opening; 5-a second air return inlet; 6-a first air return opening; 7-inlet of return air duct; 8-outlet of return air duct; 9-an evaporator; 10-a defrosting heater 10; 11-inlet of air supply duct; 12-non-refrigerated compartment; 13-freezer compartment.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and "a" and "an" generally include at least two, but do not exclude at least one, unless the context clearly dictates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
During defrosting and recovery periods of the frostless refrigerator, hot air enters the freezing chamber through the air supply outlet of the freezing chamber, so that the temperature of the freezing chamber rises back to exceed the storage temperature limit value, and the storage temperature is unqualified.
Aiming at the problem that the temperature of a cooling chamber rises again in the defrosting and recovery periods of a frostless refrigerator, the invention discloses an air-cooled refrigerator, wherein an evaporator is arranged on an air supply flow path, an air supply outlet for supplying cold air to the cooling chamber and an air supply fan arranged at the air supply outlet are arranged at the downstream of the air supply flow path of the evaporator, and the invention effectively avoids the temperature rise of the cooling chamber of the refrigerator caused by defrosting and/or recovery by controlling the reverse rotation speed and the reverse rotation speed of the air supply fan and combining the opening and closing of an air door in combination with the figure 1. In other embodiments, the air supply fan can be arranged in an air supply flow path between the air supply outlet and the evaporator outlet, and the rotation speed of the reverse air supply fan and the rotation speed of the fan can be controlled by the mode.
For further explanation, the following examples are disclosed.
Example 1
In the present embodiment, a method for controlling air supply during defrosting of an air-cooled refrigerator is to form air pressure of a counter air supply flow path by a counter air supply fan 1 during defrosting and/or during recovery after defrosting to prevent hot air generated during defrosting of an evaporator 9 from flowing into a cooling compartment through an air supply outlet and the air supply fan 1. The hot air can not enter the air distribution air channel (the air distribution air channel refers to the air channel for forward air supply to the cooling chamber) due to the air pressure of the reverse air supply flow path generated by the reverse rotation of the fan, so that the diffusion of the hot air generated for defrosting is avoided or reduced, the temperature rise of the chamber is smaller, the storage temperature requirement is more easily met, and the power consumption of the box is smaller.
In order to maintain the temperature of the cooling compartment and avoid the temperature from rising due to the inflow of hot air, the air supply control method may further include: and before the defrosting and/or the recovery period after the defrosting is carried out, closing an air distribution opening of the cooling chamber, wherein the air distribution opening is an inlet which is matched with the air supply opening to supply air to the cooling chamber. Preferably, the air distribution openings provided in the cooling compartment are closed, including the first air distribution opening 3 of the non-freezing compartment 12 and/or the second air distribution opening 4 of the freezing compartment provided in the cooling compartment 13. Air doors are respectively arranged at the first air distribution opening 3 and the second air distribution opening 4 correspondingly. The cooling compartment is isolated from the air distribution duct by opening and closing the air door, and hot air flowing into the air distribution duct is further reduced or avoided.
When the air supply fan 1 is reversely rotated, the rotating speed of the air supply fan 1 can be adjusted in real time according to the temperature of an air distribution duct formed among the first air distribution opening 3, the second air distribution opening 4 and the air supply opening 2. When the temperature of the air distribution duct rises, the reverse rotation speed is increased; otherwise, the reverse rotation speed is reduced.
For the wind pressure generated by the reverse rotation of the fan, a basic wind pressure can be set according to the actual situation so as to balance the thermal buoyancy of the hot air. And the temperature difference change in the air distribution duct is measured in real time, if the temperature in the air duct rises again when hot air is more, the rotating speed of the air supply fan 1 is adjusted through frequency conversion, and the air pressure is increased properly. Or, multiple gears are set, the difference range is divided according to the temperature difference in the air duct, and the reverse rotation is carried out at a corresponding fixed rotating speed.
Example 2
The invention also discloses an air-cooled refrigerator, wherein an evaporator 9 is arranged on the air supply flow path, an air supply outlet 2 for supplying cold air to the cooling compartment and an air supply fan 1 positioned at the air supply outlet 2 are arranged at the downstream of the air supply flow path of the evaporator 9, and the air supply fan 1 can also be used for reversely forming air pressure to prevent the air pressure of the reverse air supply flow path when the air pressure is formed to prevent defrosting during defrosting and/or during the recovery period after defrosting so as to prevent hot air generated in the defrosting process of the evaporator 9 from flowing into the cooling compartment through the air supply outlet 2 and the air supply fan 1. The control unit in the air-cooled refrigerator controls the reverse rotation and the rotation speed of the air supply fan 1 during defrosting and/or during recovery after defrosting.
Further, the air-cooled refrigerator also comprises a temperature monitoring unit, and the temperature monitoring unit is used for monitoring the temperature in an air distribution duct formed between an air distribution opening and the air supply opening 2 of the cooling chamber and sending the temperature to the control unit of the refrigerator. When the freezing fan rotates reversely, the control unit can control the rotating speed of the freezing fan according to the measured temperature in the air distribution duct.
Specifically, when the air supply fan 1 is reversely rotated, the rotation speed of the air supply fan 1 can be adjusted in real time according to the temperature of an air distribution duct formed between the first air distribution opening 3, the second air distribution opening 4 and the air supply opening 2. When the temperature of the air distribution duct rises, the reverse rotation speed is increased; otherwise, the reverse rotation speed is reduced. For example, for the wind pressure generated by the reverse rotation of the fan, a basic wind pressure can be set according to the actual situation to balance the thermal buoyancy of the hot air. And the temperature difference change in the air distribution duct is measured in real time, if the temperature in the air duct rises again when hot air is more, the rotating speed of the air supply fan 1 is adjusted through frequency conversion, and the air pressure is increased properly. Or, multiple gears are set, the difference range is divided according to the temperature difference in the air duct, and the reverse rotation is carried out at a corresponding fixed rotating speed.
As shown in fig. 1, the cooling compartment comprises: a non-freezing compartment 12 and a freezing compartment 13. In the air-cooled refrigerator, a non-freezing chamber is arranged above a freezing chamber, a first air distribution opening 3 is arranged on the side wall of the non-freezing chamber, a second air distribution opening 4 is arranged on the side wall of the freezing chamber, and an air distribution air channel is formed by a channel among the first air distribution opening 3, the second air distribution opening 4 and an air supply opening 2. The air distribution duct is communicated with a cooling chamber and an evaporation chamber (namely can be used for defrosting an evaporator) at the front side of the air supply fan 1. When the defrosting heater 10 disposed in the air supply duct and below the evaporator 9 is electrically heated, hot air in defrosting and recovering of the air-cooled refrigerator may flow due to thermal buoyancy, and after the air distribution opening is provided, in order to further reduce the flow rate, an air door may be provided on the basis of realizing the reverse rotation of the air supply fan 1 to further block the flow. Preferably, dampers are respectively provided at the first air distribution opening 3 and the second air distribution opening 4. The cooling compartment is isolated from the air distribution duct by opening and closing the air door, and hot air flowing into the air distribution duct is further reduced or avoided.
In this embodiment, the bottom of the wall of the freezing compartment is provided with a second air return opening 5, and the top of the wall of the non-freezing compartment is provided with a first air return opening 6. The first air return opening 6 is connected with an inlet 7 of an air return duct, an outlet 8 of the air return duct and the second air return opening 5 of the freezing chamber are connected with an inlet 11 of an air supply duct, an outlet of the air supply duct is connected with the air supply outlet 2 and the air supply fan 1, and the evaporator 9 is arranged in the air supply duct and is positioned below the air supply outlet 2.
Based on the above, the air-cooled refrigerator in this embodiment controls the blowing fan 1 to rotate reversely at a proper rotation speed, and the generated wind pressure offsets the floating force of the hot air, thereby preventing the hot air from entering the cooling compartment through the blowing port during defrosting and/or recovery. The air circulation of the refrigerator adopting the scheme is shown in figure 1, and the specific control flow comprises the following steps: the control unit executes a defrosting mode, the air door is closed, the air supply fan 1 is reversely rotated, the defrosting heater 10 heats air, the heated air floats upwards to heat a frost layer on the evaporator 9, the floating air cannot enter an air distribution air duct because the air supply fan 1 is reversely rotated, hot air circulates only in a space above the evaporator 9 and between the defrosting heater 10, and does not enter a cooling chamber through other passages. In addition, the fan can be kept to rotate reversely in the recovery period, the gear or the frequency can be set according to actual requirements, extra temperature rise caused by hot air entering the refrigerator compartment in the defrosting and recovery periods is avoided, and the lower temperature can be kept in the air distribution duct.
Compared with the control mode of closing the air door and the air supply fan of the non-freezing chamber in the defrosting and recovery period and switching on the electric heating until the defrosting is finished, the control mode can effectively avoid the problems that the chamber temperature rises too high in the defrosting and recovery period, the storage temperature cannot meet the requirement, and the power consumption of the compressor is increased due to long startup time of the compressor in the precooling period after the defrosting heater is switched off. The refrigerator adopting the control mode has more stable storage temperature, lower power consumption and more energy saving.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (10)
1. An air supply control method for defrosting of an air-cooled refrigerator, which is provided with an evaporator on an air supply flow path, an air supply outlet for supplying cold air to a cooling compartment and an air supply blower on the downstream of the air supply flow path of the evaporator or on the air supply flow path between the air supply outlet and an evaporator outlet,
and during defrosting and/or during recovery after defrosting, the reverse air supply fan forms air pressure of a reverse air supply flow path to prevent hot air generated in the defrosting process of the evaporator from flowing into the cooling chamber through the air supply outlet and the air supply fan.
2. The method for controlling air supply during defrosting of an air-cooled refrigerator according to claim 1, further comprising: before defrosting and/or before the recovery period after defrosting, closing an air distribution opening of the cooling chamber, wherein the air distribution opening distributes the cold air supplied by the air supply opening to the cooling chamber.
3. The method as claimed in claim 2, wherein the air distribution opening comprises a first air distribution opening provided on a non-freezing chamber wall of the cooling chamber and/or a second air distribution opening provided on a freezing chamber wall of the cooling chamber; the air distribution opening for closing the cooling chamber further comprises: and closing a first air distribution opening arranged in the non-freezing chamber of the cooling chamber and/or a second air distribution opening arranged in the freezing chamber of the cooling chamber.
4. The method as claimed in claim 3, wherein the rotation speed of the blower fan is adjusted in real time according to the temperature of the air distribution duct formed between the first air distribution opening, the second air distribution opening and the blower opening when the blower fan is reversed,
when the temperature of the air distribution duct rises, the reverse rotation speed is increased; otherwise, the reverse rotation speed is reduced.
5. An air-cooled refrigerator, the air-cooled refrigerator is provided with an evaporator on an air supply flow path, an air supply outlet for supplying cold air to a cooling chamber and an air supply fan positioned at the air supply outlet or positioned in the air supply flow path between the air supply outlet and an outlet of the evaporator are arranged at the lower reaches of the air supply flow path of the evaporator, and is characterized in that,
the air supply fan is also used for reversely forming air pressure to prevent air pressure of the reverse air supply flow path when the air pressure is prevented from being defrosted during defrosting and/or during recovery after defrosting so as to prevent hot air generated in the defrosting process of the evaporator from flowing into the cooling chamber through the air supply opening and the air supply fan;
and the control unit is used for controlling the reverse rotation of the air supply fan and adjusting the rotating speed during defrosting and/or during recovery after defrosting.
6. The air-cooled refrigerator of claim 5, further comprising:
the air distribution port distributes the cold air supplied by the air supply port to the cooling chamber and comprises a first air distribution port arranged on the wall of a non-freezing chamber in the cooling chamber and/or a second air distribution port arranged on the wall of a freezing chamber in the cooling chamber;
a temperature monitoring unit for monitoring the temperature in an air distribution duct formed between an air distribution opening and an air supply opening of the cooling chamber and sending the temperature to the control unit,
when the freezing fan rotates reversely, the control unit controls the rotating speed of the freezing fan according to the temperature in the air distribution duct.
7. The air-cooled refrigerator of claim 6, wherein the cooling compartment comprises: a non-freezing compartment and a freezing compartment,
wherein the non-freezing chamber is positioned above the freezing chamber, a first air distribution port is arranged on the wall of the non-freezing chamber, a second air distribution port is arranged on the wall of the freezing chamber, and an air distribution air duct is formed between the first air distribution port and the air supply port and between the second air distribution port and the air supply port.
8. The air-cooled refrigerator of claim 7, wherein dampers are provided at the first air distribution opening and the second air distribution opening, respectively.
9. The air-cooled refrigerator as claimed in claim 8, wherein the bottom of the wall of the freezing compartment is provided with a second air return opening, the top of the wall of the non-freezing compartment is provided with a first air return opening, the first air return opening is connected with the inlet of the air return duct, the outlet of the air return duct and the second air return opening of the freezing compartment are connected with the inlet of the air supply duct, the outlet of the air supply duct is connected with the air supply opening and the air supply fan, and the evaporator is arranged in the air supply duct and positioned below the air supply opening.
10. The air-cooled refrigerator of claim 9, wherein the defrosting refrigerator further comprises: the defrosting heater is arranged in the air supply duct and is positioned below the evaporator, and the defrosting heater adopts an electric heating mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910931850.6A CN110671884A (en) | 2019-09-29 | 2019-09-29 | Air supply control method for defrosting of air-cooled refrigerator and air-cooled refrigerator |
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| CN201910931850.6A CN110671884A (en) | 2019-09-29 | 2019-09-29 | Air supply control method for defrosting of air-cooled refrigerator and air-cooled refrigerator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397302A (en) * | 2020-03-25 | 2020-07-10 | 海信（山东）冰箱有限公司 | Wine cabinet and defrosting method thereof |
| CN114484910A (en) * | 2022-01-17 | 2022-05-13 | 珠海格力电器股份有限公司 | Bypass heating defrosting device, defrosting control method, refrigerating system and equipment |
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| CN114484910A (en) * | 2022-01-17 | 2022-05-13 | 珠海格力电器股份有限公司 | Bypass heating defrosting device, defrosting control method, refrigerating system and equipment |
| CN114484910B (en) * | 2022-01-17 | 2023-10-24 | 珠海格力电器股份有限公司 | Bypass heating defrosting device, defrosting control method, refrigerating system and equipment |
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