WO2023273710A1

WO2023273710A1 - Refrigerating and freezing device

Info

Publication number: WO2023273710A1
Application number: PCT/CN2022/094983
Authority: WO
Inventors: 赵弇锋; 姬立胜; 陈建全; 崔展鹏; 赵向辉; 金文佳
Original assignee: 青岛海尔电冰箱有限公司; 海尔智家股份有限公司
Priority date: 2021-06-29
Filing date: 2022-05-25
Publication date: 2023-01-05
Also published as: CN115540442A

Abstract

A refrigerating and freezing device (10), comprising: a box body (100) having a first storage compartment (110a) and a second storage compartment (110b) formed thereinside; a refrigerating system (200) having a first evaporator (212a) and a second evaporator (212b); and an air channel assembly (500) disposed in the box body (100), and configured to deliver a cooling capacity provided by the second evaporator (212b) to the first storage compartment (110a) and the second storage compartment (110b) when the first evaporator (212a) stops cold supply and to deliver a cooling capacity provided by the first evaporator (212a) to the first storage compartment (110a) and the second storage compartment (110b) when the second evaporator (212b) stops cold supply, to prevent temperature fluctuation of the first storage compartment (110a) and the second storage compartment (110b). The refrigerating and freezing device (10) can achieve cooling capacity sharing between two storage compartments, which is beneficial to improving the fresh preservation effects of the storage compartments and preventing temperature fluctuation caused by the evaporator stopping cold supply.

Description

Freezer

technical field

The present invention relates to refrigeration, and in particular to refrigeration and freezing devices.

Background technique

The fresh-keeping conditions of some items are relatively strict. For example, the fresh-keeping temperature of some items needs to be kept constant, otherwise the fresh-keeping effect of the items will be affected and the items will deteriorate.

Some traditional refrigerating and freezing devices, such as refrigerators, freezers, and freezers, use the evaporators of the refrigeration system to provide cold energy to the storage compartments, and each storage compartment is correspondingly equipped with an evaporator. When the refrigeration system is cooling, due to the low surface temperature of the evaporator, it is easy to frost, which will lead to a decrease in the cooling efficiency of the evaporator. Therefore, it is necessary to stop the cooling of the evaporator in a timely manner to allow it to adjust the cooling efficiency.

However, the inventors have realized that when the evaporator stops supplying cooling, it will cause significant temperature fluctuations in the storage compartments due to the inability to provide cold energy to the corresponding storage compartments, which will reduce the freshness preservation effect of the storage compartments .

Contents of the invention

An object of the present invention is to overcome at least one technical defect in the prior art, and provide a refrigerating and freezing device.

A further object of the present invention is to improve the freshness preservation effect of the storage compartment and prevent temperature fluctuations due to the evaporator stopping cooling.

Another further object of the present invention is to improve the flexibility of air duct adjustment of the refrigerating and freezing device.

A further object of the present invention is to improve the defrosting method of the evaporator, so that the evaporator can effectively prevent obvious temperature fluctuations in the storage compartment while increasing the defrosting rate, and improve the energy efficiency of the refrigerating and freezing device.

In particular, the present invention provides a refrigerating and freezing device, comprising: a box body with a first storage compartment and a second storage compartment formed therein; a refrigeration system having a first evaporator and a second evaporator and the air duct assembly, which is arranged in the box and is used to transport the cooling capacity provided by the second evaporator to the first storage compartment and the second storage compartment when the first evaporator stops cooling, and is also used for When the second evaporator stops cooling, the cooling provided by the first evaporator is delivered to the first storage compartment and the second storage compartment, so as to prevent the first storage compartment and the second storage compartment from collapsing. temperature fluctuations.

Optionally, the first evaporator corresponds to the first storage compartment, and is used to provide cold energy to the first storage compartment; the second evaporator corresponds to the second storage compartment, and is used to supply cold energy to the second storage compartment. The compartment provides cold energy; and the air duct assembly includes a cold energy distribution part, which is arranged on the delivery path for delivering cold energy from the first evaporator to the first storage compartment, or on the delivery path from the second evaporator to the second storage room It is used to distribute the cold energy provided by the first evaporator to the second storage compartment, and also used to distribute the cold energy provided by the second evaporator to the first storage room. room.

Optionally, the air duct assembly includes: a first air duct, corresponding to the first storage compartment, for delivering the cooling provided by the first evaporator to the first storage compartment; and a second air duct, Corresponding to the second storage compartment, it is used to transport the cold energy provided by the second evaporator to the second storage compartment; and the cold energy distribution part communicates with the first air duct and the second air duct, so that each air The duct is also used to transport the cold delivered by another air duct to the corresponding storage compartment.

Optionally, the air duct assembly further includes: a first damper, arranged at the cooling inlet of the first air duct, for allowing the cooling provided by the first evaporator to enter the first air duct, and the first damper and the second damper is set at the cooling inlet of the second air duct to allow the cooling provided by the second evaporator to enter the second air duct, and the second damper stops when the second evaporator It is closed during cooling; and the cold distribution part is a third damper, which is used to open when the first damper or the second damper is closed, so as to communicate with the first air duct and the second air duct.

Optionally, the air duct assembly further includes: a first fan, arranged in the first air duct, and located at the lower air outlet of the first damper and the third damper, for causing the cooling provided by the first evaporator to flow through the The first air door and the first air channel enter the first storage compartment, and are also used to promote the cold energy flowing through the second air channel to flow through the third air door and the first air channel in turn to enter the first storage compartment; and the second fan, arranged in the second air duct, and located at the lower air outlet of the second air door and the third air door, are used to promote the cooling provided by the second evaporator to flow through the second air door and the second air duct in turn Entering the second storage compartment is also used to promote the cold energy flowing through the first air channel to flow through the third damper and the second air channel in sequence before entering the second storage compartment.

Optionally, the cooling distribution part communicates with the first storage compartment and the second storage compartment, so that the cold delivered to the first storage compartment flows to the second storage compartment through the cooling distribution part, It also allows the cooling delivered to the second storage compartment to flow to the first storage compartment through the cooling distribution portion.

Optionally, the cooling distribution part includes: an air supply damper, used to allow the cooling delivered to the first storage compartment to be sent into the second storage compartment, or to allow the cooling delivered to the second storage compartment sent into the first storage compartment; and a return air damper for allowing the cold air sent into the second storage compartment through the supply damper to flow back to the first storage compartment, or to allow the cooling air sent into the second storage compartment through the supply damper The cooling capacity of one storage compartment is returned to the second storage compartment.

Optionally, the air duct assembly further includes a third blower, which is arranged in the first storage compartment or the second storage compartment, and is used to promote the formation of an interactive air flow passing through the air supply damper and the return air damper.

Optionally, the refrigerating system further includes: a compressor, which forms a refrigerating circuit with the first evaporator and the second evaporator; and a bypass defrosting pipeline, which has a second circuit for circulating the refrigerant from the compressor to generate heat. A bypass defrosting pipeline and a second bypass defrosting pipeline, the first bypass defrosting pipeline is thermally connected to the first evaporator, and the second bypass defrosting pipeline is thermally connected to the second evaporator.

Optionally, the refrigeration system further includes a bypass cooling pipeline, which has a first bypass cooling pipeline and a second bypass cooling pipeline; wherein the first bypass cooling pipeline is connected to the first bypass cooling pipeline The frost pipe is used to guide the refrigerant flowing through the first bypass defrosting pipeline to the second evaporator so that the second evaporator can generate cooling capacity; the second bypass cooling supply pipeline is connected to the second bypass defrosting pipeline The frost pipe is used to guide the refrigerant flowing through the second bypass defrosting pipeline to the first evaporator, so that the first evaporator generates cooling capacity.

In the refrigerating and freezing device of the present invention, since the refrigerating system has a first evaporator and a second evaporator, and the air duct assembly can deliver the cooling capacity provided by the other evaporator to the first storage when the cooling of one evaporator stops compartment and the second storage compartment, so that the two storage compartments share the cooling capacity, which is beneficial to improve the freshness preservation effect of the storage compartment and prevent temperature fluctuations due to the evaporator stopping cooling.

Furthermore, in the refrigeration and freezing device of the present invention, by adjusting the cooling distribution part, each evaporator can provide cooling capacity to the corresponding storage compartment, and the cooling capacity provided by the first evaporator can be distributed. For the second storage compartment, the cooling capacity provided by the second evaporator can also be distributed to the first storage compartment. Utilizing the cold energy distributing part to adjust the flow path of the cold energy is beneficial to improving the flexibility of the air duct adjustment of the refrigerating and freezing device.

Further, in the refrigeration and freezing device of the present invention, when one evaporator defrosts, since the refrigerant flowing through the bypass defrosting pipe that heats the evaporator can be guided and throttled, it can be supplied to another evaporator, so that the other evaporator One evaporator provides cooling, and the two evaporators complement each other, realizing the organic combination of defrosting and cooling functions. The present invention improves the defrosting mode of the evaporator, so that the evaporator can effectively prevent obvious temperature fluctuations in the storage compartment while increasing the defrosting rate, and at the same time enable the refrigeration system to effectively use the mechanical work of the compressor. It is beneficial to improve the energy efficiency of the refrigerating and freezing device.

Those skilled in the art will be more aware of the above and other objects, advantages and features of the present invention according to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

Hereinafter, some specific embodiments of the present invention will be described in detail by way of illustration and not limitation with reference to the accompanying drawings. The same reference numerals in the drawings designate the same or similar parts or parts. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the attached picture:

Fig. 1 is a schematic block diagram of a refrigerator-freezer according to one embodiment of the present invention;

Fig. 2 is a schematic structural diagram of a refrigerating and freezing device according to an embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a refrigerating and freezing device according to another embodiment of the present invention;

Fig. 4 is the schematic diagram of the refrigerating system of the refrigerating and freezing device according to one embodiment of the present invention;

Fig. 5 is a schematic diagram of a refrigeration system of a refrigerator-freezer according to another embodiment of the present invention.

detailed description

Fig. 1 is a schematic block diagram of a refrigerating and freezing device 10 according to an embodiment of the present invention. The refrigerating and freezing device 10 may generally include a cabinet 100 , a refrigeration system 200 and an air duct assembly 500 .

Fig. 2 is a schematic structural diagram of a refrigerating and freezing device 10 according to an embodiment of the present invention. The inside of the case body 100 is formed with a first storage compartment 110a and a second storage compartment 110b. That is, two storage compartments may be formed inside the case body 100 . The first storage compartment 110a and the second storage compartment 110b may be any one of a refrigerated compartment, a freezer compartment, a cryogenic compartment or a variable temperature compartment, respectively. For example, the first storage compartment 110a and the second storage compartment 110b may be arranged side by side or stacked up and down. In some embodiments, other storage compartments can also be formed inside the box body 100, and the cooling capacity supplied to the first storage compartment 110a and the second storage compartment 110b can also be transported to other storage compartments through the air supply duct. storage room to realize cooling sharing between multiple storage rooms.

The refrigeration system 200 includes refrigeration components for forming a refrigeration circuit. The cooling assembly has a first evaporator 212a and a second evaporator 212b. That is, refrigeration system 200 may have two evaporators. The refrigeration system 200 in this embodiment may be a compression refrigeration system 200 . For example, the refrigeration system 200 may further include a compressor 211 , a condenser 213 and a refrigeration throttling device 214 . When the refrigeration system 200 uses a refrigeration circuit for cooling, the refrigerant flowing out of the compressor 211 may flow through the condenser 213 and the refrigeration throttling device 214 in sequence, and then flow into the evaporator. This embodiment only uses the case that the refrigeration system 200 has two evaporators as an example for the structure of the refrigerating and freezing device 10. Those skilled in the art should be fully capable of understanding the number of evaporators, connection relationship and The corresponding relationship of cooling supply is expanded, and will not be shown here one by one.

The air duct assembly 500 is disposed in the box body 100, and is used for delivering the cooling provided by the second evaporator 212b to the first storage compartment 110a and the second storage compartment when the first evaporator 212a stops supplying cooling. 110b, which is also used to transfer the cold energy provided by the first evaporator 212a to the first storage compartment 110a and the second storage compartment 110b when the second evaporator 212b stops cooling, so as to prevent the first storage compartment from The temperature of the compartment 110a and the second storage compartment 110b fluctuates. That is to say, the air duct assembly 500 can play the role of transporting cold energy, and can transport the cold energy provided by the first evaporator 212a or the second evaporator 212b to the two storage compartments, realizing the difference between the two storage compartments. Cooling sharing between rooms.

In the refrigerating and freezing device 10 of this embodiment, since the refrigeration system 200 has the first evaporator 212a and the second evaporator 212b, and the air duct assembly 500 can use the cooling capacity provided by the other evaporator when one evaporator stops cooling It is sent to the first storage compartment 110a and the second storage compartment 110b, so that the two storage compartments can share the cooling capacity, which is beneficial to improve the freshness preservation effect of the storage compartment and prevent the Temperature fluctuations occur.

The first evaporator 212a corresponds to the first storage compartment 110a, and is used for providing cold energy to the first storage compartment 110a. The first evaporator 212a may be disposed on one side of the first storage compartment 110a, such as the rear side or the lower side. The second evaporator 212b corresponds to the second storage compartment 110b, and is used for providing cold energy to the second storage compartment 110b. The second evaporator 212b may be disposed on one side of the second storage compartment 110b, such as the rear side or the lower side. The above-mentioned "corresponding" means that when no evaporator stops cooling, each evaporator only provides cooling capacity to the corresponding storage compartment.

The air duct assembly 500 includes a cooling distribution part, which is arranged on the conveying path of the first evaporator 212a to convey the cold to the first storage compartment 110a, or arranged on the second evaporator 212b to convey the cold to the second storage compartment 110b. on the cold delivery path. Since the cooling required by the storage compartment comes from the evaporator and flows to the interior of the storage compartment, the delivery path for the first evaporator 212a to deliver the cooling capacity to the first storage compartment 110a may refer to the first evaporator 212a to the airflow path inside the first storage compartment 110a, and the delivery path for the second evaporator 212b to deliver cold energy to the second storage compartment 110b may refer to the airflow path from the second evaporator 212b to the inside of the second storage compartment 110b airflow path.

The cooling distribution part is used to distribute the cooling provided by the first evaporator 212a to the second storage compartment 110b, and is also used to distribute the cooling provided by the second evaporator 212b to the first storage compartment 110a . That is to say, the cold distribution part acts as a diversion or drainage. A cooling distribution unit is provided on the delivery path of cooling delivered by the first evaporator 212a or the second evaporator 212b. By adjusting the cooling distribution unit, the cooling flow path can be adjusted to realize cooling sharing.

By adjusting the cooling distribution part, each evaporator can provide cooling capacity to the corresponding storage compartment, and can distribute the cooling capacity provided by the first evaporator 212a to the second storage compartment 110b, The cold energy provided by the second evaporator 212b can also be distributed to the first storage compartment 110a. Utilizing the cold energy distributing part to adjust the flow path of the cold energy is beneficial to improve the flexibility of the air duct adjustment of the refrigerating and freezing device 10 .

The air duct assembly 500 includes a first air duct 510a and a second air duct 510b.

Wherein, the first air duct 510a corresponds to the first storage compartment 110a, and is used for transporting the cold energy provided by the first evaporator 212a to the first storage compartment 110a. That is, when no evaporator stops cooling, the first air channel 510a is only used to deliver the cooling capacity provided by the first evaporator 212a to the first storage compartment 110a. The first air duct 510a can communicate with the space where the first evaporator 212a is located and the inner space of the first storage compartment 110a. The second air duct 510b corresponds to the second storage compartment 110b, and is used for delivering the cold energy provided by the second evaporator 212b to the second storage compartment 110b. That is, when no evaporator stops cooling, the second air channel 510b is only used to deliver the cooling capacity provided by the second evaporator 212b to the second storage compartment 110b. The second air duct 510b can communicate with the space where the second evaporator 212b is located and the inner space of the second storage compartment 110b.

The cooling distribution part communicates with the first air passage 510a and the second air passage 510b, so that each air passage is also used to deliver the cooling delivered by the other air passage to the corresponding storage compartment. Since each air duct communicates with the corresponding storage compartment, the cold energy can enter the second air duct 510a from the first air duct 510a through the cold energy distribution unit by connecting the first air duct 510a and the second air duct 510b through the cooling distribution part. The second air passage 510b, or the cold energy can enter the first air passage 510a from the second air passage 510b through the cold distribution part, which can skillfully connect the first air passage 510a and the second storage compartment 110b, or communicate with the second storage compartment 110b. The second air duct 510b is connected to the first storage compartment 110a, so that the cooling provided by the first evaporator 212a can be delivered to the second storage via the first air duct 510a, the cooling distribution part, and the second air duct 510b In the compartment 110b, the cold energy provided by the second evaporator 212b can also be delivered to the first storage compartment 110a via the second air channel 510b, the cooling energy distribution part, and the first air channel 510a.

The air duct assembly 500 also includes a first damper 540a and a second damper 540b. Wherein, the first damper 540a is disposed at the cooling inlet of the first air duct 510a, for allowing the cooling provided by the first evaporator 212a to enter the first air duct 510a. The first damper 540a is closed when the first evaporator 212a stops cooling, and is opened when the first evaporator 212a is cooling. The second damper 540b is disposed at the cooling inlet of the second air passage 510b, and is used for allowing the cooling provided by the second evaporator 212b to enter the second air passage 510b. The second damper 540b is closed when the second evaporator 212b stops cooling, and is opened when the second evaporator 212b is cooling.

In this embodiment, the state where the evaporator stops cooling may include the defrosting state of the evaporator. When an evaporator stops cooling, by controlling the closing of the damper corresponding to the evaporator, the heat generated by the defrosting of the evaporator can be prevented from entering the storage compartment through the corresponding air duct, thereby reducing or avoiding the storage compartment temperature fluctuates.

For example, the first air duct 510a and the second air duct 510b may be separated by a first partition 510c. The cooling distribution part in this embodiment may be the third damper 530 . The third damper 530 may be disposed on the first partition 510c. And the third damper 530 is used to open when the first damper 540a or the second damper 540b is closed, so as to communicate with the first air duct 510a and the second air duct 510b. That is, when any one of the first damper 540a and the second damper 540b is closed, the third damper 530 can be controlled to open. That is to say, once the first evaporator 212a or the second evaporator 212b stops cooling, the third damper 530 can be controlled to open, so that the air duct assembly 500 can deliver cooling capacity to the two storage compartments at the same time to prevent Temperature fluctuations in the two storage compartments.

The refrigerating and freezing device 10 of this embodiment uses the third damper 530 to communicate with the first air duct 510a and the second air duct 510b, has a simple structure, low manufacturing cost, and has good application prospects.

The air duct assembly 500 may further include a first fan 560a and a second fan 560b.

Wherein the first blower 560a is arranged in the first air channel 510a, and is used to make the cooling provided by the first evaporator 212a flow through the first damper 540a and the first air channel 510a in sequence, and then enter the first storage compartment 110a, It is also used to promote the cooling energy flowing through the second air passage 510b to flow through the third damper 530 and the first air passage 510a in sequence, and then enter the first storage compartment 110a. For example, the first fan 560a may be disposed at the downwind of the first damper 540a and the third damper 530 .

The second blower 560b is arranged in the second air passage 510b, and is used to make the cooling provided by the second evaporator 212b flow through the second damper 540b and the second air passage 510b in sequence, and then enter the second storage compartment 110b, It is also used to promote the cooling energy flowing through the first air passage 510a to flow through the third damper 530 and the second air passage 510b in sequence, and then enter the second storage compartment 110b. For example, the second fan 560b may be disposed at the downwind of the second damper 540b and the third damper 530 .

It is worth noting that those skilled in the art should easily know that the above-mentioned "downwind port" is relative to the flow path of the airflow, and the downwind port refers to the place blown by the airflow. The first fan 560a and the second fan 560b may be centrifugal fans respectively.

Through the special design of the installation positions of the first fan 560a and the second fan 560b, it is possible to adjust the conveying path of cooling capacity without adding other airflow actuating mechanisms, and the structure is compact.

In some optional embodiments, the structure of the cooling distribution part can also be changed. Fig. 3 is a schematic structural diagram of a refrigerating and freezing device 10 according to another embodiment of the present invention.

The cooling distribution part of this embodiment communicates with the first storage compartment 110a and the second storage compartment 110b, so that the cooling delivered to the first storage compartment 110a flows to the second storage through the cooling distribution part. The compartment 110b also allows the cold energy delivered to the second storage compartment 110b to flow to the first storage compartment 110a through the cold energy distribution part. The cold energy provided by the first evaporator 212a can be transported to the second storage room through the first air channel 510a, the first storage room 110a and the cold energy supply unit by connecting the two storage compartments with the cold energy distribution part. In the compartment 110b, the cold energy provided by the second generator can also be delivered to the first storage compartment 110a via the second air duct 510b, the second storage compartment 110b and the cooling supply part.

Since the cooling distribution part is directly connected to the two storage compartments, there is no need to modify the first air duct 510a and the second air duct 510b, which can simplify the process flow and reduce the processing difficulty of the refrigerating and freezing device 10 .

The cooling distribution part includes an air supply damper 570 and a return air damper 580 . The air supply damper 570 is used to allow the cold energy delivered to the first storage compartment 110a to be sent to the second storage compartment 110b, or to allow the cold energy delivered to the second storage compartment 110b to be sent to the first storage compartment. Compartment 110a. The return air damper 580 is used to allow the cold air sent into the second storage compartment 110b through the air supply damper 570 to flow back to the first storage compartment 110a, or to allow the cold to be sent into the first storage compartment 110a through the air supply damper 570 The cooling capacity is returned to the second storage compartment 110b. That is, when the air supply damper 570 and the return air damper 580 are opened synchronously, an air circulation is formed between the first storage compartment 110a and the second storage compartment 110b. The air supply damper 570 and the return air damper 580 can be controlled to open when any one of the first evaporator 212a and the second evaporator 212b stops cooling, so as to communicate with the first storage compartment 110a and the second storage compartment Room 110b.

For example, the first storage compartment 110a and the second storage compartment 110b may be separated by a second partition 110c. The air supply damper 570 and the return air damper 580 of this embodiment may be respectively disposed on the second partition 110c.

The air duct assembly 500 of this embodiment may further include a third fan 590, which is arranged in the first storage compartment 110a or the second storage compartment 110b, and is used to promote the formation of air flow through the air supply door 570 and return air. The interactive airflow of wind damper 580. The third fan 590 may be a centrifugal fan. When the third fan 590 is turned on, the air exchange rate between the first storage compartment 110a and the second storage compartment 110b can be accelerated.

In some optional embodiments, the number and installation position of the third fan 590 can be changed, and a third fan 590 can be respectively set in the first storage compartment 110a and the second storage compartment 110b, each The storage compartments can use the internal third fan 590 to force the cold energy in another storage compartment to enter through the air supply damper 570 and flow out through the return air damper 580, which can improve the cooling capacity distribution efficiency.

Fig. 4 is a schematic structural diagram of the refrigeration system 200 of the refrigeration and freezing device 10 according to one embodiment of the present invention.

The refrigeration system 200 of this embodiment may further include a compressor 211, a bypass defrosting pipe, and a bypass cooling supply pipeline.

The compressor 211 forms a refrigeration circuit with the first evaporator 212a and the second evaporator 212b. A condenser 213 and a refrigeration throttling device 214 may be provided in the refrigeration circuit of this embodiment. The condenser 213 and the refrigeration throttling device 214 may be sequentially connected to the exhaust port of the compressor 211 . The first evaporator 212 a and the second evaporator 212 b may be sequentially connected in series between the refrigeration throttling device 214 and the suction port of the compressor 211 . This embodiment takes the case where two evaporators are connected in series as an example to further explain the structure of the refrigeration system 200. Those skilled in the art should be fully capable of determining the number and connection of evaporators on the basis of understanding this embodiment. The method is transformed, and no more examples are given here.

The bypass defrost pipe has a first bypass defrost pipe 220a and a second bypass defrost pipe 220b for circulating the refrigerant from the compressor 211 to generate heat, and the first bypass defrost pipe 220a is thermally connected with the first evaporator 212a , the second bypass defrost pipe 220b is thermally connected with the second evaporator 212b. That is to say, the first bypass defrost pipe 220a corresponds to the first evaporator 212a and is used to heat the first evaporator 212a, and the second bypass defrost pipe 220b corresponds to the second evaporator 212b and is used to heat the second evaporator 212b. Each evaporator can use the heat generated by its corresponding bypass defrosting tube to defrost. The refrigerating system 200 is configured to use the other evaporator to provide cooling when the bypass defrosting tube is used to heat one evaporator, so as to prevent the temperature fluctuation of the storage compartment.

For example, the inlet of each bypass defrosting pipe can be connected to the discharge port of compressor 211 through a connecting pipeline, or can be connected with a certain section downstream of the discharge port of compressor 211 through a connecting pipeline, as long as it can lead in and out High-pressure or high-temperature refrigerant for the compressor 211 is sufficient. When the refrigerant flows through the bypass defrosting tube, it can release heat and condense to generate heat.

The above-mentioned connecting pipeline may have the same structure as the connecting pipeline between various components in the refrigeration circuit, as long as the function of guiding the refrigerant can be realized. The structure of the bypass defrosting pipe may be roughly the same as that of the condenser pipe of the condenser 213, as long as the high-pressure or high-temperature refrigerant flowing through it can condense and release heat.

The first bypass defrost pipe 220a is wound around the first evaporator 212a, or is arranged adjacent to the first evaporator 212a to achieve thermal connection. The second bypass defrosting pipe 220b is wound around the second evaporator 212b, or is arranged adjacent to the second evaporator 212b to achieve thermal connection. Winding the bypass defrosting tube around the evaporator can increase the contact area between the bypass defrosting tube and the evaporator, improve heat transfer efficiency, and thus facilitate rapid defrosting of the evaporator. Arranging the bypass defrosting pipe close to the evaporator can simplify the connection process of the thermal connection and reduce the manufacturing cost.

The refrigeration system 200 may further include a bypass cooling pipeline, which has a first bypass cooling pipeline 230a and a second bypass cooling pipeline 230b, the first bypass cooling pipeline 230a is connected to the first The bypass defrost pipe 220a is used to guide the refrigerant flowing through the first bypass defrost pipe 220a to the second evaporator 212b, so that the second evaporator 212b generates cooling capacity, and the second bypass cooling pipeline 230b It is connected to the second bypass defrosting pipe 220b, and is used to guide the refrigerant flowing through the second bypass defrosting pipe 220b to the first evaporator 212a, so that the first evaporator 212a generates cooling capacity.

The first bypass cooling pipeline 230a is connected to the inlet of the second evaporator 212b, and the first bypass cooling pipeline 230a is provided with a first bypass throttling device 270a for convective flow to the second evaporator 212b The refrigerant is throttling. The first bypass cooling pipeline 230a is used to use the first bypass throttling device 270a to control the flow out of the first bypass defrosting pipe when the first evaporator 212a uses the heat generated by the first bypass defrosting pipe 220a to defrost. 220a and the refrigerant flowing to the second evaporator 212b is throttled. That is to say, the first bypass cooling pipeline 230a can also use the first bypass throttling device 270a to throttle the refrigerant while guiding the refrigerant, so that the throttled refrigerant flows through the second evaporator The second evaporator 212b can evaporate and absorb heat, so that the second evaporator 212b provides cooling.

The second bypass cooling pipeline 230b is connected to the inlet of the first evaporator 212a, and the second bypass cooling pipeline 230b is provided with a second bypass throttling device 270b for convective flow to the first evaporator 212a The refrigerant is throttling. The second bypass cooling pipeline 230b is used for defrosting the second evaporator 212b using the heat generated by the second bypass defrosting pipe 220b, using the second bypass throttling device 270b to control the flow out of the second bypass defrosting pipe. 220b and the refrigerant flowing to the first evaporator 212a is throttled. That is to say, the second bypass cooling pipeline 230b can also use the second bypass throttling device 270b to throttle the refrigerant while guiding the refrigerant, so that the throttled refrigerant flows through the first evaporator The first evaporator 212a can evaporate and absorb heat, so that the first evaporator 212a provides cooling.

With the refrigerating and freezing device 10 of this embodiment, when an evaporator defrosts, the refrigerant flowing through the bypass defrosting pipe that heats the evaporator can be guided and throttled and then supplied to another evaporator, so that the other evaporator One evaporator provides cooling, and the two evaporators complement each other, realizing the organic combination of defrosting and cooling functions. The present invention improves the defrosting method of the evaporator, so that the evaporator can effectively prevent obvious temperature fluctuations in the storage compartment while increasing the defrosting rate, and also enables the refrigeration system 200 to effectively utilize the mechanical work of the compressor 211. , which is conducive to improving the energy efficiency of the refrigerating and freezing device 10 .

The refrigeration system 200 may further include a bypass air return pipeline 280, which communicates with the outlet of the first evaporator 212a and the suction port of the compressor 211, and is used to turn the The refrigerant flowing sequentially through the second bypass cooling pipeline 230b and the first evaporator 212a is led to the suction port of the compressor 211 . That is, the bypass return air line 280 can be used as a connecting channel between the outlet of the first evaporator 212a and the suction port of the compressor 211, and the refrigerant flowing out of the first evaporator 212a can directly pass through the bypass return air line 280 Return to compressor 211. When the second evaporator 212b defrosts, the first evaporator 212a uses the refrigerant flowing through the second bypass defrosting pipe 220b and flowing to the first evaporator 212a through the second bypass cooling pipeline 230b to provide cooling capacity. The bypass return line 280 can guide the refrigerant flowing out of the first evaporator 212a to the suction port of the compressor 211 when the second evaporator 212b defrosts, thereby completing a refrigeration-defrosting cycle.

The refrigeration system 200 may further include a first switching valve 240 connected to the outlet of the first evaporator 212a, that is, the inlet of the first switching valve 240 is connected to the outlet of the first evaporator 212a. The first switching valve 240 has a valve port communicating with the second evaporator 212b (that is, the refrigerant flowing out of the valve port can flow to the inlet of the second evaporator 212b), and a valve port communicating with the bypass return line 280 (that is, , the refrigerant flowing out of the valve port can flow to the bypass return line 280). The first switching valve 240 may be a three-way valve, such as a three-way solenoid valve. The first switching valve 240 may be disposed in the storage compartment. The valve port in this embodiment and the following embodiments refers to the outlet of the switching valve.

The two valve ports of the first switching valve 240 are not opened simultaneously. The first switching valve 240 is used to open the valve port communicating with the bypass return air line 280 when the second bypass defrosting pipe 220b utilizes the generated heat to heat the second evaporator 212b, so that the refrigerant returns to the suction of the compressor 211 When the first evaporator 212a and the second evaporator 212b provide cold energy at the same time, the valve port connected to the second evaporator 212b is opened, so that the refrigerant flows through the second evaporator 212b and absorbs heat to evaporate.

The refrigeration system 200 may further include a second switching valve 260 connected to the discharge port of the compressor 211 , that is, the inlet of the second switching valve 260 is connected to the discharge port of the compressor 211 . The second switching valve 260 has a valve port communicating with the condenser 213 (that is, the refrigerant flowing out from the valve port can flow to the condenser 213), a valve port communicating with the first bypass defrosting pipe 220a (that is, the refrigerant flowing out from the valve port The refrigerant can flow to the first bypass defrosting pipe 220a) and communicate with the valve port of the second bypass defrosting pipe 220b (that is, the refrigerant flowing out of the valve port can flow to the second bypass defrosting pipe 220b). The second switching valve 260 may be a four-way valve, such as a four-way solenoid valve. The second switching valve 260 may be disposed in the press chamber.

The three valve ports of the second switching valve 260 are not opened simultaneously. The second switching valve 260 is used to open the valve port communicating with the condenser 213 when the first evaporator 212a and the second evaporator 212b provide cooling capacity at the same time, so as to allow the refrigerant flowing out of the compressor 211 to flow through the condenser 213, refrigeration Throttling device 214, the first evaporator 212a and the second evaporator 212b; when the first evaporator 212a is heated by the heat generated by the first bypass defrosting pipe 220a, the valve opening communicating with the first bypass defrosting pipe 220a is opened to The refrigerant flowing out of the compressor 211 is allowed to directly flow into the first bypass defrosting pipe 220a, so that the first evaporator 212a defrosts using the heat generated by the first bypass defrosting pipe 220a; When the heat of the second evaporator 212b is heated, the valve port communicating with the second bypass defrosting pipe 220b is opened to allow the refrigerant flowing out of the compressor 211 to directly flow into the second bypass defrosting pipe 220b, so that the second evaporator 212b can utilize The heat generated by the second bypass defrosting pipe 220b defrosts.

By adding a bypass defrost pipe in the refrigeration system 200 and arranging a bypass cooling pipeline at the outlet of each evaporator, the first switching valve 240 and the second switching valve 260 are used to regulate the flow of refrigerant between the refrigeration circuit and the bypass branch. The flow path of the circuit can realize "both defrosting and cooling", and at the same time, the mechanical power of the compressor 211 can be effectively used, which has the advantage of a compact structure.

In this embodiment, the refrigeration assembly can further include a liquid storage bag 215, which is arranged in the refrigeration circuit, for example, it can be arranged between the outlet of the second evaporator 212b and the suction port of the compressor 211, and is used to adjust the cooling capacity. The amount of refrigerant required by each part of the assembly.

The refrigerating assembly may further include a refrigerating air return pipe 219, which is arranged in the refrigerating circuit, for example, may be arranged between the outlet of the second evaporator 212b and the liquid storage bag 215, and is used to reduce the flow back to the suction port of the compressor 211. The superheat of the refrigerant.

In some other optional embodiments, the structure of the refrigeration assembly, and the structure and connection mode of the bypass cooling pipeline can be changed. Fig. 5 is a schematic structural diagram of a refrigeration system 200 for a refrigeration-freezing device 10 according to yet another embodiment of the present invention. In this embodiment, neither the first bypass cooling pipeline 230a nor the first bypass cooling pipeline 230a may be provided with a bypass throttling device. In the refrigeration assembly, the original refrigeration throttling device 214 can be used as the refrigeration throttling device 214 corresponding to the first evaporator 212a, and the refrigeration throttling device 214 is connected in series with the first evaporator 212a to form a first refrigeration branch circuit. The refrigerating assembly may further include a refrigerating throttling device 214 corresponding to the second evaporator 212b. The refrigerating throttling device 214 is arranged in parallel with the first refrigerating branch and corresponds to the second evaporator 212b.

The outlet of the first bypass cooling pipeline 230a can be converted into an inlet connected to the refrigeration throttling device 214 corresponding to the second evaporator 212b. The outlet of the second bypass cooling pipeline 230b can be converted into an inlet communicating with the refrigeration throttling device 214 corresponding to the first evaporator 212a. Correspondingly, the refrigeration system 200 may further include a third switching valve 250, which may be a double-input and double-outlet electromagnetic valve, that is, having two inlets and two outlets. For example, the third switching valve 250 may have an inlet connected to the outlet of the condenser 213, and an inlet connected to the outlet of the second bypass cooling pipeline 230b. The two outlets of the third switching valve 250 communicate with the two cooling throttling devices 214 respectively. The third switching valve 250 may be disposed in the storage compartment.

When the first evaporator 212a and the second evaporator 212b provide cooling capacity at the same time, the third switching valve 250 opens the inlet connected to the outlet of the condenser 213, and the second switching valve 260 opens to communicate with at least one of the at least one refrigeration throttling device 214. Outlet; the first switching valve 240 opens the valve port communicating with the second evaporator 212b. When the first evaporator 212a defrosts, the second switching valve 260 opens the valve port connected to the first bypass defrosting pipe 220a, and closes other valve ports, all the inlets and all outlets of the third switching valve 250 are closed, the first The switching valve 240 opens a valve port communicating with the second evaporator 212b. When the second evaporator 212b defrosts, the second switching valve 260 opens the valve port connected to the second bypass defrosting pipe 220b, and closes other valve ports, and the third switching valve 250 opens and connects to the second bypass cooling pipeline 230b, and open to communicate with the outlet of the refrigeration throttling device 214 corresponding to the first evaporator 212a, the first switch valve 240 opens the valve port to communicate with the bypass return line 280, and closes other valve ports.

By improving the structure of the refrigeration circuit and the bypass branch, and using the third switching valve 250 to adjust the flow path of the refrigerant, it is possible to flexibly adjust the refrigeration effect of the first evaporator 212a and the second evaporator 212b, and to The structure of the bypass cooling pipeline is simplified, so that each bypass cooling pipeline can omit the bypass throttling device.

In the refrigerating and freezing device 10 of the present invention, since the refrigeration system 200 has the first evaporator 212a and the second evaporator 212b, and the air duct assembly 500 can transfer the cooling capacity provided by the other evaporator when one evaporator stops cooling To the first storage compartment 110a and the second storage compartment 110b, so that the two storage compartments share the cooling capacity, which is beneficial to improve the freshness preservation effect of the storage compartment and prevent the evaporator from stopping Temperature fluctuations due to cooling.

So far, those skilled in the art should appreciate that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, without departing from the spirit and scope of the present invention, the disclosed embodiments of the present invention can still be used. Many other variations or modifications consistent with the principles of the invention are directly identified or derived from the content. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

A refrigerating and freezing device, comprising:

The box body has a first storage compartment and a second storage compartment formed therein;

a refrigeration system having a first evaporator and a second evaporator; and

The air duct assembly is arranged in the box and is used to transport the cooling provided by the second evaporator to the first storage compartment and the second storage compartment when the first evaporator stops cooling. The two storage compartments are also used to transfer the cooling capacity provided by the first evaporator to the first storage compartment and the second storage compartment when the second evaporator stops cooling supply , to prevent temperature fluctuations of the first storage compartment and the second storage compartment.
The refrigerator-freezer according to claim 1, wherein,

The first evaporator corresponds to the first storage compartment, and is used to provide cooling capacity to the first storage compartment; the second evaporator corresponds to the second storage compartment, and is used to providing cooling to the second storage compartment; and

The air duct assembly includes a cold energy distribution part, which is arranged on the conveying path of the first evaporator to the first storage compartment, or arranged on the second evaporator to the second storage compartment. The cold delivery path of the compartment is used to distribute the cold provided by the first evaporator to the second storage compartment, and is also used to transfer the cold provided by the second evaporator to the second storage compartment. diverted to the first storage compartment.
The refrigerator-freezer according to claim 2, wherein,

The air duct assembly includes:

a first air duct, corresponding to the first storage compartment, for transporting the cooling capacity provided by the first evaporator to the first storage compartment; and

a second air duct, corresponding to the second storage compartment, used to transport the cold energy provided by the second evaporator to the second storage compartment; and

The cooling distribution part communicates with the first air passage and the second air passage, so that each air passage is also used to deliver the cooling delivered by the other air passage to the corresponding storage compartment.
The refrigerator-freezer according to claim 3, wherein,

The air duct assembly also includes:

The first air door is arranged at the cooling inlet of the first air channel, and is used to allow the cold energy provided by the first evaporator to enter the first air channel, and the first air door evaporates in the first air channel. turn off when the appliance stops cooling; and

The second damper is arranged at the cooling inlet of the second air channel, and is used to allow the cooling provided by the second evaporator to enter the second air channel, and the second damper is evaporating in the second air channel. turn off when the unit stops cooling; and

The cooling distribution part is a third damper, which is used to open when the first damper or the second damper is closed, so as to communicate with the first air duct and the second air duct.
The refrigerator-freezer according to claim 4, wherein,

The air duct assembly also includes:

The first blower is arranged in the first air passage, and is located at the lower air outlet of the first damper and the third damper, and is used to make the cooling provided by the first evaporator flow through the The first damper and the first air duct enter the first storage compartment afterward, and are also used to make the cold energy flowing through the second air duct flow through the third damper and the first air duct in sequence. access to said first storage compartment; and

The second blower is arranged in the second air passage, and is located at the lower air outlet of the second air door and the third air door, and is used to promote the cooling provided by the second evaporator to flow through the The second damper and the second air duct enter the second storage compartment afterward, and are also used to make the cold energy flowing through the first air duct flow through the third damper and the second air duct in sequence. After entering the second storage compartment.
The refrigerator-freezer according to claim 2, wherein,

The cooling distribution part communicates with the first storage compartment and the second storage compartment, so that the cooling delivered to the first storage compartment flows to the second storage compartment through the cooling distribution part. The two storage compartments also allow the cooling delivered to the second storage compartment to flow to the first storage compartment through the cooling distribution part.
The refrigerator-freezer according to claim 6, wherein,

The cold distribution unit includes:

The air supply damper is used to allow the cold energy delivered to the first storage compartment to be sent into the second storage compartment, or to allow the cold energy delivered to the second storage compartment to be sent into the the first storage compartment; and

The air return damper is used to allow the cold energy sent into the second storage compartment through the air supply damper to flow back to the first storage compartment, or to allow the cold energy sent into the first storage compartment through the air supply damper The cooling capacity of one storage compartment is returned to the second storage compartment.
The refrigerator-freezer according to claim 7, wherein,

The air duct assembly further includes a third fan, which is arranged in the first storage compartment or the second storage compartment, and is used to form an interaction between the air supply damper and the return air damper. airflow.
The refrigerator-freezer according to any one of claims 1-8, wherein,

The refrigeration system also includes:

a compressor forming a refrigeration circuit with said first evaporator and said second evaporator; and

a bypass defrosting pipeline, which has a first bypass defrosting pipeline and a second bypass defrosting pipeline for circulating refrigerant from the compressor to generate heat, the first bypass defrosting pipeline is connected to the The first evaporator is thermally connected, and the second bypass defrosting pipeline is thermally connected with the second evaporator.
The refrigerator-freezer according to claim 9, wherein,

The refrigeration system also includes a bypass cooling pipeline, which has a first bypass cooling pipeline and a second bypass cooling pipeline; wherein

The first bypass cooling pipeline is connected to the first bypass defrosting pipe, and is used to guide the refrigerant flowing through the first bypass defrosting pipeline to the second evaporator, so that The second evaporator generates cooling capacity; the second bypass cooling pipeline is connected to the second bypass defrosting pipe for guiding the refrigerant flowing through the second bypass defrosting pipeline to the first evaporator so that the first evaporator generates cold.