Refrigerator and refrigeration control method for refrigerator compartment thereof

Abstract

The present invention relates to a refrigerator and a method for controlling refrigeration of a refrigerator compartment thereof, wherein the refrigerator comprises a cabinet, a refrigerator compartment and a freezer compartment formed therein, a refrigeration system disposed therein, the refrigeration system comprising an evaporator disposed at the rear side of the freezer compartment, and the refrigerator compartment is characterized in that: a cold storage tank is disposed at the rear side of the freezer compartment, directly bonded to the evaporator or connected via a cool-conducting material; a cold storage tank is disposed at the rear side of the refrigerator compartment, and the refrigerator compartment is cooled by the cold storage tank; an electric damper is disposed between the rear sides of the freezer compartment and the rear side of the refrigerator compartment, the cold storage tank being connected to a movable drive mechanism; when the electric damper is opened, the cold storage tank can, under the action of the movable drive mechanism, pass through the electric damper and move into the cold storage tank to absorb cold air. Compared with the prior art, the present invention has the advantages of preventing cross-talk between the freezer compartment and the refrigerator compartment, and preventing the compressor in the refrigeration system from being frequently started up to cool the refrigerator compartment alone, consuming electricity.

Description

Technical Field

[0001] The invention relates to a refrigerator and a refrigeration control method for a refrigeration compartment thereof. Background Art

[0002] There are two main ways to achieve refrigeration in existing air-cooled refrigerators that include a refrigerator compartment and a freezer compartment:

[0003] The first type: the refrigeration system is only equipped with a single evaporator. The evaporator of the refrigeration system is set at the back of the freezer compartment. The evaporator directly cools the freezer compartment. The refrigerator compartment and the freezer compartment are connected by a cooling air duct. An electric damper is set in the cooling air duct. When the electric damper is opened, cold air flows from the freezer compartment to the refrigerator compartment to cool the refrigerator compartment. The disadvantages of this refrigeration method are: ① The cold air for cooling the refrigerator compartment comes from the freezer compartment. The cold air in the freezer compartment can reach about -25℃. The cold air with very low temperature directly blown into the refrigerator compartment can easily freeze the refrigerated food; ② The humidity of the air coming from the freezer compartment is low, which can easily dry out the food in the refrigerator compartment, making it difficult to store fruits and vegetables in the refrigerator compartment; ③ The freezer compartment and the refrigerator compartment can easily cross-flavor each other.

[0004] The second type: The refrigeration system is equipped with two evaporators. The freezing evaporator is set at the back of the freezer compartment, and the refrigerating evaporator is set at the back of the refrigerator compartment. The refrigeration system uses a solenoid valve to alternately switch the freezing evaporator and the refrigerating evaporator for refrigeration. In this way, the refrigeration of the freezer and the refrigerator compartment will occupy each other's refrigeration channels. When the freezer compartment is refrigerated, the refrigerator compartment cannot be refrigerated. When the refrigerator compartment is refrigerated, the freezer compartment cannot be refrigerated, resulting in inaccurate temperature control. In addition, the compressor will be started regardless of whether the refrigerator or the freezer compartment is refrigerated, which easily causes a waste of electricity. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to provide a refrigerator suitable for storing refrigerated food with a refrigeration chamber and a freezer chamber that are completely separated from each other to prevent odor from mixing and food from being frozen and dried.

[0006] The second technical problem to be solved by the present invention is to provide a refrigerator refrigeration control method for a refrigerator in which the refrigeration chamber and the freezer chamber are completely separated, so that there is no odor mixing and the compressor in the refrigeration system does not frequently start up and consume electricity for the cooling needs of the refrigeration chamber alone.

[0007] The technical solution adopted by the present invention to solve the first technical problem mentioned above is: a refrigerator, including a box body, a refrigerator compartment and a freezer compartment formed in the box body, a refrigeration system is provided in the box body, the refrigeration system includes an evaporator arranged at the rear side of the freezer compartment, and is characterized in that: a cold storage tank is provided on the rear side of the freezer compartment, which is directly attached to the evaporator or connected by a cold conductive material, and a cold storage is provided on the rear side of the refrigerator compartment, and the refrigerator compartment is cooled by the cold storage; an electric damper is provided between the rear side of the freezer compartment and the rear side of the refrigerator compartment, and the cold storage is connected to a movable drive mechanism. When the electric damper is opened, the cold storage can pass through the electric damper under the action of the movable drive mechanism and move to the cold storage tank to absorb cold air.

[0008] As an improvement, a temperature sensor for measuring the temperature of the cold storage device is provided in the cold storage device, and the electric damper and the mobile drive mechanism are configured as follows: when the cold storage chamber does not need to be refrigerated and the temperature of the cold storage device is higher than a first preset temperature, the electric damper opens, and the cold storage device moves to the cold storage tank under the action of the mobile drive mechanism to absorb cold air.

[0009] As a further improvement, the electric damper and the mobile drive mechanism are also configured so that when the cold storage device absorbs enough cold air in the cold storage tank so that the temperature of the cold storage device is lower than a second preset temperature, the cold storage device moves back to the rear side of the cold storage chamber under the action of the mobile drive mechanism, and the electric damper is closed.

[0010] Preferably, the first preset temperature is -2°C to -5°C, and the second preset temperature is -10°C to -15°C.

[0011] Preferably, the cold storage tank is made of a superconducting aluminum alloy plate, and the rear portion of the evaporator and the cold storage tank are connected by a cooling aluminum plate.

[0012] Preferably, the cold storage device includes a cold conduction shell with a hollow interior, and the cold conduction shell is filled with cold storage phase change material.

[0013] As a further improvement, a refrigeration fan is provided at the rear side of the freezer compartment to blow the cold energy generated by the evaporator into the interior of the freezer compartment.

[0014] As a further improvement, the mobile driving mechanism includes a driving motor, a winding wheel connected to the driving motor and driven by the driving motor, and a rope with one end wound around the winding wheel and the other end connected to the cold storage device.

[0015] The mobile driving mechanism may also be a push rod motor with a telescopic rod.

[0016] The technical solution adopted by the present invention to solve the above-mentioned second technical problem is: a refrigerator refrigerator compartment refrigeration control method with the above-mentioned structure is characterized in that: the refrigerator compartment is cooled by the cold capacity of the cold storage device; when the cold capacity of the cold storage device is insufficient, the electric damper opens, and the cold storage device passes through the electric damper under the action of the mobile drive mechanism and moves to the cold storage tank to absorb cold capacity.

[0017] As a more specific control method, a refrigeration fan is provided at the rear side of the refrigeration chamber to blow the cold energy of the cold storage device into the interior of the refrigeration chamber. When the refrigeration chamber needs to be cooled, it is first determined whether the cold storage device is located at the rear side of the refrigeration chamber. If so, the refrigeration fan is started to blow the cold energy released by the cold storage device into the refrigeration chamber. When the temperature in the refrigeration chamber reaches the set temperature, the refrigeration fan is turned off; if the cold storage device is not at the rear side of the refrigeration chamber, the refrigeration fan is started after the cold storage device finishes storing cold energy and returns to the rear side of the refrigeration chamber; when there is no refrigeration demand for refrigeration and the temperature of the cold storage device is higher than the first preset temperature, the electric damper is opened, and the cold storage device is sent to the cold storage tank by the mobile driving mechanism to absorb cold energy. When the cold storage device absorbs enough cold energy and the temperature of the cold storage device is rapidly reduced to the second preset temperature, the cold storage is ended, the cold storage device is moved to the rear side of the refrigeration chamber by the mobile driving mechanism, and the electric damper is closed.

[0018] The first preset temperature is -2°C to -5°C, and the second preset temperature is -10°C to -15°C.

[0019] Compared with the prior art, the advantages of the present invention are: the evaporator is independently arranged at the rear side of the freezer compartment, and a cold storage device is provided at the rear side of the refrigerator compartment. The rear part of the evaporator is attached to or connected to the cold storage tank. The cold storage device passes through the electric damper and moves to the cold storage tank to absorb cold energy under the action of a mobile driving mechanism only when cold energy is needed. After the cold storage device stores enough cold energy, it returns to the rear side of the refrigerator compartment, and the electric damper is closed. The refrigerator compartment is cooled by the cold storage device, and the air outlet temperature is higher than that of the air drawn from the freezer, which will not cause the fruits and vegetables to be frozen. The freezer compartment and the refrigerator compartment do not mix air with each other, and the compressor in the refrigeration system will not be frequently started to consume electricity for the cooling needs of the refrigerator compartment alone. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the refrigerator structure in an embodiment of the present invention (normal cooling state).

[0021] Figure 2 Schematic diagram of the refrigerator structure in an embodiment of the present invention (cold storage device in cold storage state). DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0023] like Figure 1 、 2The refrigerator shown in the figure includes a box body 1, in which a refrigerating chamber 11 and a freezing chamber 12 are formed. The refrigerating chamber 11 is located at the upper part of the box body 1, and the freezing chamber 12 is located at the lower part of the box body 1. A refrigerating door body 21 is provided at a position corresponding to the refrigerating chamber 11 on the front side of the box body 1, and a freezing door body 22 is provided at a position corresponding to the freezing chamber 12 on the front side of the box body 1. A refrigeration system is provided in the box body, and the refrigeration system includes a compressor (not shown in the figure), a condenser (not shown in the figure) and an evaporator 3, wherein the evaporator 3 is provided in the freezing chamber 1. 2 rear side, the rear side of the freezing chamber 12 is provided with a cold storage tank 4 which is directly attached to the evaporator 3 or connected through a high cold conductive material, and the rear side of the refrigerating chamber 11 is provided with a cold storage device 5, and the refrigerating chamber 11 is cooled by the cold storage device 5; an electric damper 6 is provided between the rear side of the freezing chamber 12 and the rear side of the refrigerating chamber 11, and the cold storage device 5 is connected to a mobile drive mechanism. When the electric damper 6 is opened, the cold storage device 5 can pass through the electric damper 6 under the action of the mobile drive mechanism and move to the cold storage tank 4 to absorb cold air.

[0024] In this embodiment, the cold storage tank 4 is made of a superconducting aluminum alloy plate, and the rear part of the evaporator 3 and the cold storage tank 4 are connected by a superconducting cold aluminum plate. The cold storage tank 5 includes an internal hollow cold-conducting shell filled with a cold-conducting phase change material; a temperature sensor 10 for measuring the temperature of the cold storage tank 5 is provided in the cold storage tank 5, and a refrigeration fan 8 for blowing the cold energy of the cold storage tank 5 into the refrigeration chamber 11 is provided at the rear side of the cold storage chamber, and a freezing fan 9 for blowing the cold energy generated by the evaporator 3 into the freezing chamber 12 is provided at the rear side of the freezing chamber. The mobile driving mechanism includes a driving motor 7, a winding wheel (not shown in the figure) driven by the driving motor and connected to the driving motor 7, and a rope 71 with one end wound around the winding wheel and the other end connected to the cold storage tank 5. The electric damper 6 and the movable drive mechanism are configured such that when the refrigeration chamber 11 does not require refrigeration and the temperature of the cold storage device 5 is higher than a first preset temperature, the electric damper 6 opens, and the cold storage device 5 is transported by the movable drive mechanism to the cold storage tank 4 to absorb cold energy. When the cold storage device 5 has absorbed enough cold energy in the cold storage tank 4, causing the temperature of the cold storage device 5 to be lower than a second preset temperature, the cold storage device 5 is moved back to the rear side of the refrigeration chamber 11 by the movable drive mechanism, and the electric damper 6 closes. The first preset temperature is -2°C to -5°C, preferably -3°C, and the second preset temperature is -10°C to -15°C, preferably -13°C.

[0025] The mobile driving mechanism in this embodiment can be replaced by the push rod motor with a telescopic rod.

[0026] The refrigeration control method of the refrigerator compartment of the above-mentioned refrigerator is as follows: when the refrigeration chamber 11 needs to be refrigerated, it is first determined whether the cold storage device 5 is located at the rear side of the refrigeration chamber 11. If so, the refrigeration fan 8 is started to blow the cold released by the cold storage device 5 into the refrigeration chamber 11. When the temperature in the refrigeration chamber 11 reaches the set temperature, the refrigeration fan 8 is turned off; if the cold storage device 5 is not at the rear side of the refrigeration chamber 11, the refrigeration fan 8 is started again after the cold storage device 5 finishes storing cold and returns to the rear side of the refrigeration chamber 11; when there is no refrigeration demand for refrigeration and the temperature of the cold storage device 5 is higher than the first preset temperature, the electric damper 6 is opened, and the cold storage device 5 is moved to the cold storage tank 4 under the action of the mobile drive mechanism to absorb cold. When the cold storage device 5 absorbs enough cold and the temperature of the cold storage device 5 is rapidly reduced to the second preset temperature, the cold storage is ended, the cold storage device 5 is moved to the rear side of the refrigeration chamber by the mobile drive mechanism, and the electric damper 6 is closed.

Claims

1. A refrigerator comprising a housing, a refrigerator compartment and a freezer compartment formed therein, a refrigeration system provided within the housing, the refrigeration system comprising an evaporator provided at the rear side of the freezer compartment, characterized in that: The rear side of the freezer compartment is provided with a cold storage tank which is directly attached to the evaporator or connected by a cold conducting material, and the rear side of the refrigerator compartment is provided with a cold storage device, and the refrigerator compartment is cooled by the cold storage device; an electric damper is provided between the rear side of the freezer compartment and the rear side of the refrigerator compartment, and the cold storage device is connected to a movable drive mechanism. When the electric damper is opened, the cold storage device can pass through the electric damper under the action of the movable drive mechanism and move to the cold storage tank to absorb cold energy; a temperature sensor for measuring the temperature of the cold storage device is provided in the cold storage device, and the electric damper and the movable drive mechanism are connected. The driving mechanism is configured as follows: when the refrigerating chamber does not need to be refrigerated and the temperature of the cold storage device is higher than a first preset temperature, the electric damper opens, and the cold storage device moves to the cold storage tank to absorb cold energy under the action of the moving driving mechanism; the electric damper and the moving driving mechanism are further configured as follows: when the cold storage device absorbs enough cold energy in the cold storage tank and the temperature of the cold storage device is lower than a second preset temperature, the cold storage device is moved back to the rear side of the refrigerating chamber by the moving driving mechanism, and the electric damper closes; a refrigeration fan is provided on the rear side of the freezer chamber to blow the cold energy generated by the evaporator into the interior of the freezer chamber.

2. The refrigerator according to claim 1, wherein: The first preset temperature is -2°C to -5°C, and the second preset temperature is -10°C to -15°C.

3. The refrigerator according to claim 1, wherein: The cold storage tank is made of a superconducting aluminum alloy plate, and the rear portion of the evaporator and the cold storage tank are connected by a cold-conducting aluminum plate.

4. The refrigerator according to claim 1, wherein: The cold storage device comprises a cold conduction shell with a hollow interior, and the cold conduction shell is filled with cold storage phase change material.

5. The refrigerator according to any one of claims 1 to 4, characterized in that: The mobile driving mechanism includes a driving motor, a winding wheel connected to the driving motor and driven by the driving motor, and a rope with one end wound around the winding wheel and the other end connected to the cold storage device.

6. The refrigerator according to any one of claims 1 to 4, characterized in that: The mobile driving mechanism is a push rod motor with a telescopic rod.

7. The method for controlling refrigeration of a refrigerator compartment according to any one of claims 1 to 4, wherein: The refrigeration chamber is cooled by the cold storage device; when the cold storage device is insufficient, the electric damper opens, and the cold storage device passes through the electric damper under the action of the moving drive mechanism and moves into the cold storage tank to absorb cold energy.

8. The method for controlling refrigeration of a refrigerator compartment according to claim 7, wherein: The rear side of the refrigerating chamber is provided with a refrigerating fan that blows the cold energy of the cold storage device into the interior of the refrigerating chamber. When the refrigerating chamber needs to be cooled, it is first determined whether the cold storage device is located at the rear side of the refrigerating chamber. If so, the refrigerating fan is started to blow the cold energy released by the cold storage device into the refrigerating chamber. When the temperature in the refrigerating chamber reaches the set temperature, the refrigerating fan is turned off; if it is determined that the cold storage device is not at the rear side of the refrigerating chamber, the refrigerating fan is started again after the cold storage device finishes storing cold energy and returns to the rear side of the refrigerating chamber; when there is no refrigeration demand for refrigeration and the temperature of the cold storage device is higher than the first preset temperature, the electric damper is opened, and the cold storage device is sent to the cold storage tank by the mobile driving mechanism to absorb cold energy. When the cold storage device absorbs enough cold energy and the temperature of the cold storage device is rapidly reduced to the second preset temperature, the cold storage is ended, the cold storage device is moved to the rear side of the refrigerating chamber by the mobile driving mechanism, and the electric damper is closed.

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