CN220235948U - Thawing device and refrigerator comprising same - Google Patents

Abstract

The utility model discloses a thawing device and a refrigerator comprising the thawing device, wherein the thawing device comprises a shell and a thawing chamber, and the thawing chamber is positioned in the shell; the thawing chamber is provided with a first side wall, a first vent hole and a second vent hole are formed in the first side wall, a cavity is formed between the first side wall and the shell, a heating device and a fan are arranged in the cavity, the fan is used for driving air in the cavity to flow into the thawing chamber through the first vent hole, and then flows back into the cavity through the second vent hole to form circulation. According to the utility model, air in the cavity of the defrosting device is heated by the heating device, is driven by the fan to pass through the first vent hole and enter the defrosting chamber, and is subjected to thermal convection with an object to be defrosted in the defrosting chamber so as to accelerate defrosting, and then the air is pumped back to the cavity through the second vent hole, so that air circulation in the cavity and the defrosting chamber is realized; the refrigerator condenser disclosed by the utility model utilizes the discharged waste heat as a heat source of the thawing device, so that the thawing device does not need external heat supply, the energy consumption is greatly reduced, and the thawing speed is increased.

Description

Thawing device and refrigerator comprising same

Technical Field

The utility model relates to a thawing device and a refrigerator comprising the thawing device.

Background

The frozen storage is the most widely used storage fresh-keeping mode at present, frozen foods can be processed in the next step generally after being thawed, and the commonly used thawing methods at present comprise natural air thawing, refrigeration thawing, water thawing, micro-freezing thawing, radio frequency thawing, high-voltage electrostatic field thawing and the like.

However, these methods are slow or thawing and are subject to contamination, or are prone to loss of food nutrients, or are costly and energy intensive, and do not meet the user's needs well.

Disclosure of Invention

The utility model aims to overcome the defects of low defrosting speed, high energy consumption and the like of a defrosting device in the prior art, and provides the defrosting device and a refrigerator comprising the same.

The utility model solves the technical problems by the following technical proposal:

the utility model provides a thawing device, which comprises a shell and a thawing chamber, wherein the thawing chamber is positioned in the shell; the thawing chamber is provided with a first side wall, a first vent hole and a second vent hole are formed in the first side wall, a cavity is formed between the first side wall and the shell, a heating device and a fan are arranged in the cavity, the fan is used for driving air in the cavity to flow into the thawing chamber through the first vent hole, and then flows back into the cavity through the second vent hole to form circulation.

In this technical scheme, the air in the cavity is heated by heating device, is driven by the fan and passes first ventilation hole and get into the thawing chamber, thereby takes place thermal convection and play the effect of thawing with waiting to unfreeze between the thing in the thawing chamber, and the air is taken out the thawing chamber by the fan through the second ventilation hole and is got back to the cavity afterwards to realized the inside air cycle of cavity and thawing chamber.

Preferably, the first side wall is a heat conducting plate, and the heating device and the fan are mounted on the first side wall.

In this technical scheme, heating device's heat conduction to the heat-conducting plate, again conduct to the defrosting indoor to the defrosting is accelerated, the improvement heat utilization efficiency.

Preferably, a defrosting plate is arranged at the bottom of the defrosting chamber and is used for placing objects to be defrosted; one side of the first side wall is abutted with one side of the defrosting plate and conducts heat to the defrosting plate.

In this technical scheme, the heat conduction board is from heating device absorbing heat conduction to defrosting board, by defrosting board conduction to the thing of waiting to unfreezing again, makes the thing of waiting to unfreezing by heat conduction and heat convection mode quilt heating simultaneously to it is comparatively close to make the everywhere temperature of waiting to unfreeze the thing surface simultaneously, and everywhere on the surface unfreezes all accelerates, and it is more even to unfreeze, and the quality of unfreezing is high.

Preferably, the first ventilation hole is formed in the circumferential edge of the first side wall, the second ventilation hole is formed in the middle of the first side wall, and the fan is used for pumping out and conveying air in the defrosting chamber into the cavity through the second ventilation hole.

In the technical scheme, as air is pumped out to form negative pressure in the defrosting chamber, air in the cavity flows into the defrosting chamber through the first vent hole at the edge of the first side wall, and after thermal convection occurs between the air and an object to be defrosted, the air is pumped out of the defrosting chamber again through the second vent hole in the middle of the first side wall, and returns to the cavity to form air flow circulation, so that the object to be defrosted is quickened.

Preferably, the first ventilation holes are multiple;

and/or the number of the second ventilation holes is multiple.

In this technical scheme, set up a plurality of first ventilation holes and second ventilation holes for the airflow distributes evenly.

Preferably, the thawing device further comprises a cooling mechanism for reducing the air temperature in the cavity.

In this technical scheme, when the air temperature in the cavity is too high, cooling mechanism starts the cooling, avoids the air temperature in the cavity to be too high, prevents simultaneously to wait to unfreeze the thing too fast.

Preferably, the cooling mechanism is a cooling fan, and is used for exhausting air in the cavity to the outside of the shell;

or, the cooling mechanism comprises a cold source pipeline and a control valve, wherein the cold source pipeline is connected with an external cold source, and the control valve is used for controlling the on-off of the cold source pipeline.

In the technical scheme, when the temperature in the cavity is too high, the heat radiation fan extracts hot air in the cavity, the temperature of the heating device is reduced through convection, and when the temperature returns to a normal value, the heat radiation fan stops working; by controlling the cooling fan, the temperature in the cavity is prevented from being too high;

or when the temperature in the cavity is too high, the control valve is opened, the cold source flows into the cold source pipeline to reduce the air temperature in the cavity, and when the temperature returns to the normal range, the control valve closes the cold source pipeline, and no cold source exists in the cold source pipeline; through the cooperation of cold source pipeline and control valve, prevent that the temperature is too high in the cavity.

Preferably, the first side wall is provided with an air guide mechanism at the first ventilation hole and/or the second ventilation hole.

In the technical scheme, the air guide mechanism adjusts the air inlet and outlet angles, so that the flow field distribution in the defrosting chamber is more uniform.

The utility model also provides a refrigerator, which comprises a freezing chamber, a compressor, an evaporator, a condenser and the thawing device; the heating device is a condenser.

In the technical scheme, a compressor, an evaporator and a condenser are sequentially connected to form refrigeration circulation, and a refrigeration working medium absorbs heat after refrigerating a freezing chamber in the evaporator, flows into the condenser to release heat and returns to the compressor again; the thawing and refrigerating functions are not in conflict, gains are generated when the thawing and refrigerating functions are operated at the same time, and the condenser utilizes the discharged waste heat as a heat source of the thawing device, so that the thawing device does not need external heat supply, the energy consumption is greatly reduced, the thawing speed is increased, the temperature of the condenser is reduced, and the refrigerating efficiency of the refrigerator is improved; when the defrosting device does not operate, the cooling mechanism can also operate independently, so that the temperature of the condenser is reduced, and the normal operation of the refrigeration function is ensured; when the compressor is not in operation, the double functions of heat conduction and heat convection at the ambient temperature can also defrost the object to be defrosted better and faster, and the defrosting function is not affected. Preferably, the condenser comprises condenser tubes arranged around the fan.

In the technical scheme, the condenser pipeline surrounds the fan, so that air heated by the condenser pipeline in all directions is driven by the fan to enter circulation, and the heat utilization efficiency is improved.

On the basis of conforming to the common knowledge in the field, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the utility model.

The utility model has the positive progress effects that:

according to the utility model, air in the cavity of the thawing device is heated by the heating device, is driven by the fan to pass through the first vent hole and enter the thawing chamber, and is thermally convection between the thawing chamber and an object to be thawed, so that the thawing effect is accelerated, and then the air is pumped out of the thawing chamber by the fan through the second vent hole and returned to the cavity, so that air circulation in the cavity and the thawing chamber is realized; the refrigerator condenser disclosed by the utility model utilizes the discharged waste heat as a heat source of the thawing device, so that the thawing device does not need external heat supply, the energy consumption is greatly reduced, the thawing speed is increased, and the refrigerator condenser has better practicability.

Drawings

Fig. 1 is a schematic cross-sectional view of a thawing device and a refrigerator of the present utility model.

Fig. 2 is a perspective view of a thawing device and a refrigerator of the present utility model.

Fig. 3 is a rear view of the refrigerator of the present utility model.

Description of the reference numerals

A shell 1, a cavity 11, a heat insulation layer 12, a box door 13 and a freezing chamber 14;

a thawing chamber 2, a first sidewall 21, a first vent 22, a second vent 23, and a thawing plate 24;

heating means/condenser 3, condenser tubing 31;

a fan 4;

a cooling mechanism 5;

a compressor 6, a compressor heat dissipation mechanism 61;

evaporator 7, dry filter 71, capillary tube 72.

Detailed Description

The utility model is further illustrated by means of examples which follow, without thereby restricting the scope of the utility model thereto.

As shown in fig. 1 to 3, an embodiment of a thawing device and a refrigerator including the same according to an embodiment of the present utility model are shown. The thawing device comprises a shell 1 and a thawing chamber 2, wherein the thawing chamber 2 is positioned in the shell 1; the thawing chamber 2 is provided with a first side wall 21, a first vent hole 22 and a second vent hole 23 are formed in the first side wall 21, a cavity 11 is formed between the first side wall 21 and the shell 1, a heating device 3 and a fan 4 are arranged in the cavity 11, the fan 4 is used for driving air in the cavity 11 to flow into the thawing chamber 2 through the first vent hole 22, and then the air flows back into the cavity 11 through the second vent hole 23 to form circulation. The air in the cavity 11 is heated by the heating device 3, is driven by the fan 4 to pass through the first ventilation hole 22 and enter the thawing chamber 2, and thermal convection occurs between the thawing chamber 2 and the object to be thawed so as to play a role in accelerating thawing, and then the air is pumped out of the thawing chamber 2 by the fan 4 through the second ventilation hole 23 and returned to the cavity 11, so that air circulation in the cavity 11 and the thawing chamber 2 is realized.

In the present embodiment, the fan 4 is a centrifugal fan. The centrifugal fan discharges air drawn from the inside of the thawing chamber 2 in the circumferential direction thereof, and circulates the air uniformly. The fan 4 may be a fan with similar effects.

In some embodiments, a wind guiding mechanism is provided on the first side wall 21 at the first ventilation hole 22 and the second ventilation hole 23. The wind guiding mechanism adjusts the air inlet and outlet angles, so that the distribution of the flow field in the thawing chamber 2 is more uniform.

In other embodiments, the first ventilation hole 22 and the second ventilation hole 23 may be provided with a wind guiding mechanism at only one location.

In the present embodiment, the first side wall 21 is an aluminum alloy heat conductive plate, and the heating device 3 and the fan 4 are mounted on the first side wall 21. The aluminum alloy has high heat conductivity coefficient, and the thawing of the object to be thawed is quickened through heat conduction; the heat of the heating device 3 is conducted to the heat conducting plate and then conducted into the thawing chamber 2, so that thawing is accelerated, and the heat utilization efficiency is improved.

In other embodiments, the material of the heat conductive plate may be other materials with high thermal conductivity.

In the embodiment, an aluminum alloy thawing plate 24 is arranged at the bottom of the thawing chamber and is used for placing objects to be thawed; one side of the first side wall 21 abuts against one side of the defrosting plate 24, and conducts heat to the defrosting plate 24. The heat absorbed by the first side wall 21 from the heating device 3 is conducted to the thawing plate 24, and then is conducted to the object to be thawed by the thawing plate 24, so that the object to be thawed is heated by two modes of heat conduction and heat convection, and the thawing speed is increased; the aluminum alloy has high heat conductivity, the thawing of the object to be thawed is quickened through heat conduction, meanwhile, the temperature of the surface of the object to be thawed is close, the thawing of the surface of the object is quickened, the thawing is uniform, and the thawing quality is high.

In other embodiments, the thawing plate 24 may be made of other materials with high thermal conductivity; alternatively, the thawing plate 24 and the first sidewall 21 may be integrally formed.

In the present embodiment, the first ventilation hole 22 is provided at the circumferential edge of the first side wall 21, the second ventilation hole 23 is provided at the middle of the first side wall 21, and the fan 4 is configured to pump out air in the thawing chamber 2 through the second ventilation hole 23 and deliver the air into the cavity 11. The air in the thawing chamber 2 is pumped out to form negative pressure, the air in the cavity 11 flows into the thawing chamber 2 through the first vent holes 22 at the edge of the first side wall 21, and after thermal convection occurs between the air and the object to be thawed, the air is pumped out of the thawing chamber 2 again through the second vent holes 23 in the middle of the first side wall 21 by the fan 4 and returns to the cavity 11 to form air flow circulation, so that the thawing of the object to be thawed is quickened.

The first ventilation holes 22 and the second ventilation holes 23 are all multiple, so that the air flow is uniformly distributed.

In other embodiments, for ease of processing, only one of the first vent hole 22 and the second vent hole 23 may be provided, or only one of both may be provided.

The defrosting device further comprises a cooling mechanism 5 for reducing the air temperature in the cavity 11. When the temperature in the cavity 11 is too high, the cooling mechanism 5 is started to cool, so that the temperature in the cavity 11 is prevented from being too high, and the object to be thawed is prevented from being thawed too fast.

In some embodiments, the cooling mechanism 5 is a cooling fan, for exhausting the air in the cavity 11 to the outside of the housing 1; when the temperature in the cavity 11 is too high, the heat radiation fan extracts hot air in the cavity 11, the temperature of the heating device 3 is reduced by convection, and when the temperature returns to a normal value, the heat radiation fan stops working; by controlling the cooling fan, the temperature in the cavity 11 is prevented from being excessively high.

In other embodiments, the cooling mechanism 5 includes a cold source pipeline and a control valve, the cold source pipeline is connected with an external cold source, and the control valve is used for controlling on-off of the cold source pipeline. When the temperature in the cavity 11 is too high, the control valve is opened, the cold source flows into the cold source pipeline to reduce the air temperature in the cavity 11, and when the temperature returns to the normal range, the control valve closes the cold source pipeline; by the cooperation of the cold source pipeline and the control valve, the temperature in the cavity 11 is prevented from being too high.

Embodiments of the present utility model also provide a refrigerator including a freezing chamber 14, a compressor 6, an evaporator 7, a condenser, and a defrosting apparatus as described above; in this embodiment, the heating device 3 is a condenser. The compressor 6, the evaporator 7 and the condenser 3 are sequentially connected to form refrigeration cycle, and the refrigeration working medium absorbs heat after refrigerating the freezing chamber 14 in the evaporator 7, flows into the condenser 3 to release heat and returns to the compressor 6 again; the thawing and refrigerating functions are not conflicting, gains are mutually achieved when the thawing and refrigerating functions are operated at the same time, the condenser 3 utilizes the discharged waste heat as a heat source of the thawing device, so that the thawing device does not need external heat supply, the energy consumption is greatly reduced, the thawing speed is increased, the temperature of the condenser 3 is reduced, and the refrigerating efficiency of the refrigerator is improved; when the defrosting device does not operate, the cooling mechanism 5 can also operate independently, so that the temperature of the condenser 3 is reduced, and the normal operation of the refrigeration function is ensured; when the compressor 6 is not in operation, the double functions of heat conduction and heat convection at the ambient temperature can also defrost the object to be defrosted better and faster, and the defrosting function is not affected.

The refrigerator is provided with a compressor heat dissipation mechanism 61, and the compressor heat dissipation mechanism 61 is a fan. The evaporator 7 is connected to the condenser 3 via a capillary tube 72 and a drier-filter 71 in turn.

In some embodiments, the compressor 6 is mounted after the condenser 3. The compressor 6 is installed near the condenser 3, so that the stroke of the refrigerating medium flowing from the compressor 6 to the condenser 3 is shortened to avoid the temperature drop, the thawing effect is improved, the fan 4 can be utilized to cool the compressor 6 at the same time, the compressor heat dissipation mechanism 61 is omitted, the structure is simplified, and the cost is reduced.

In this embodiment, the refrigerator is provided with a movable door 13, a heat-insulating layer 12 is arranged outside a freezing chamber 14, and the heat-insulating layer 12 is not arranged outside a thawing device. The heat preservation layer 12 is arranged outside the freezing chamber 14, so that the temperature in the freezing chamber 14 is prevented from being increased due to the influence of the defrosting device, and the heat preservation layer 12 is not arranged outside the defrosting device, so that the defrosting can be realized by heat conduction of ambient air in the defrosting chamber 2 even when the condenser 3 does not work.

In other embodiments, the thawing device may also be provided with a heat-insulating layer 12 to prevent the freezing chamber 14 from interfering with the thawing effect.

In some embodiments, a cold source pipe is connected to the evaporator 7, and the refrigerant in the evaporator 7 is led out, and circulates in the cold source pipe, so as to reduce the air temperature in the cavity 11 when the condenser 3 is overheated.

In other embodiments, the air conditioner may be connected to the freezing chamber 14 through a pipe, and used to draw out the cold air in the freezing chamber 14, and control whether the cold air enters the cavity 11 through opening and closing a control valve; when the temperature in the cavity 11 is too high, the control valve is opened, cold air in the freezing chamber 14 flows into the cavity 11 through the pipeline to reduce the air temperature, and when the temperature returns to the normal range, the control valve closes the pipeline, and at the moment, the cold air in the freezing chamber 14 cannot flow into the pipeline; through the cooperation of pipeline and control valve, prevent that condenser 3 from overheated unable normal work, prevent simultaneously that the temperature in the cavity 11 from being too high from leading to the thing that unfreezes soon.

In the present embodiment, the condenser 3 includes a condenser tube 31, and the condenser tube 31 is disposed around the fan 4. The condenser pipe 31 surrounds the fan 4, so that the air heated by the condenser pipe 31 in all directions is driven by the fan 4 to enter circulation, and the heat utilization efficiency is improved.

While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the utility model, but such changes and modifications fall within the scope of the utility model.

Claims (10)

1. A defrosting device, characterized in that the defrosting device comprises a shell and a defrosting chamber, wherein the defrosting chamber is positioned in the shell; the thawing chamber is provided with a first side wall, a first vent hole and a second vent hole are formed in the first side wall, a cavity is formed between the first side wall and the shell, a heating device and a fan are arranged in the cavity, the fan is used for driving air in the cavity to flow into the thawing chamber through the first vent hole, and then flows back into the cavity through the second vent hole to form circulation.

2. The defrosting apparatus of claim 1 wherein the first side wall is a thermally conductive plate, the heating means and the fan being mounted on the first side wall.

3. The thawing device as defined in claim 2, wherein a thawing plate is arranged at the bottom of the thawing chamber for placing the objects to be thawed; one side of the first side wall is abutted with one side of the defrosting plate and conducts heat to the defrosting plate.

4. The defrosting apparatus of claim 1, wherein the first vent is provided at a circumferential edge of the first side wall, the second vent is provided at a center portion of the first side wall, and the fan is configured to draw out and convey air in the defrosting chamber into the cavity through the second vent.

5. The defrosting apparatus of claim 4, wherein the first vent is a plurality of vent holes;

and/or the number of the second ventilation holes is multiple.

6. The defrosting apparatus of claim 1 further comprising a cooling mechanism for reducing the air temperature within the cavity.

7. The defrosting apparatus of claim 6, wherein the cooling mechanism is a radiator fan for exhausting air in the cavity to outside the housing;

or, the cooling mechanism comprises a cold source pipeline and a control valve, wherein the cold source pipeline is connected with an external cold source, and the control valve is used for controlling the on-off of the cold source pipeline.

8. The defrosting apparatus of claim 1, wherein an air guide mechanism is provided on the first side wall at the first vent hole and/or the second vent hole.

9. A refrigerator comprising a freezer compartment, a compressor, an evaporator, a condenser, and a defrosting apparatus according to any one of claims 1 to 8; the heating device is a condenser.

10. The refrigerator of claim 9, wherein the condenser includes a condenser tube disposed around the fan.