Refrigeration assembly and refrigerator

Abstract

The utility model provides a refrigeration assembly and a refrigerator, the refrigeration assembly comprises a switching valve, the switching valve is provided with a first port, a second port and a third port, the first port can communicate with the second port, and the first port can communicate with the third port; the compressor is communicated with the second port; the condenser is communicated with the compressor; the first evaporator is provided with a first connecting end and a second connecting end, the first connecting end is connected with the condenser, and the second connecting end is communicated with the first port; the second evaporator is provided with a third connecting end and a fourth connecting end, the third connecting end is communicated with the first connecting end of the first evaporator, and the fourth connecting end is communicated with the third port. The refrigeration assembly can improve the refrigeration efficiency and reduce energy consumption.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerator refrigeration, in particular to a refrigeration component and a refrigerator. Background Art

[0002] The refrigerant cycle in refrigerators and air conditioners follows a cycle: compressor, condenser, evaporator, and compressor. After the compressor shuts down, the pressure differential between the low pressure on the evaporator and the high pressure on the condenser causes the refrigerant to flow back toward the condenser until the pressure stabilizes. This process causes the evaporator temperature to rise. In refrigerators, for example, this elevated evaporator temperature may exceed the internal temperature, causing the evaporator to dissipate heat into the refrigerator, raising the internal temperature. This not only reduces cooling efficiency but also requires higher energy consumption to reduce the refrigerator's cooling temperature to the target when the compressor is restarted. Utility Model Content

[0003] The embodiments of the present application provide a refrigeration assembly and a refrigerator, which can improve refrigeration efficiency and reduce energy consumption.

[0004] An embodiment of the present application provides a refrigeration assembly, comprising:

[0005] a switching valve having a first port, a second port, and a third port, wherein the first port is communicable with the second port, and the first port is communicable with the third port;

[0006] a compressor, the compressor being in communication with the second port;

[0007] a condenser, the condenser being in communication with the compressor;

[0008] a first evaporator, the first evaporator having a first connection end and a second connection end, the first connection end being connected to the condenser, and the second connection end being in communication with the first port;

[0009] The second evaporator has a third connection end and a fourth connection end. The third connection end is communicated with the first connection end of the first evaporator, and the fourth connection end is communicated with the third port.

[0010] An embodiment of the present application further provides a refrigerator, comprising a refrigeration assembly, wherein the refrigeration assembly is the above-mentioned refrigeration assembly.

[0011] The refrigeration assembly and refrigerator provided in the embodiments of the present application include a switching valve, a compressor, a condenser, a first evaporator, and a second evaporator. Through the switching action of the switching valve, when the compressor is working, the refrigeration assembly can form a first circulating refrigeration flow path consisting of the switching valve, the compressor, the condenser, and the first evaporator; when the compressor is not working, the refrigeration assembly can form a second circulating refrigeration flow path consisting of the first evaporator and the second evaporator. The switching action of the switching valve can prevent the refrigerant from flowing back to the condenser and allow the refrigerant to flow to the second evaporator, thereby increasing the cooling area of ​​the refrigerant, improving the refrigeration efficiency, and reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0013] Figure 1 The schematic diagram of the structure of the refrigerator provided by the prior art.

[0014] Figure 2 A schematic diagram of the structure of a refrigeration component provided by the prior art.

[0015] Figure 3 This is a schematic diagram of the first structure of the refrigeration component provided in an embodiment of the present application.

[0016] Figure 4 This is a second structural schematic diagram of the refrigeration component provided in an embodiment of the present application.

[0017] Figure 5 A schematic structural diagram of a refrigerator provided in an embodiment of the present application. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0019] See also Figure 1 as well as Figure 2 , Figure 1 A schematic diagram of the structure of a refrigerator provided by the prior art. Figure 2 A schematic diagram of the structure of a refrigeration component provided by the prior art.

[0020] In the prior art, the refrigeration assembly 10 in the refrigerator 100 consists solely of a compressor 101, a condenser 102, a throttle element 103, and an evaporator 104. The evaporator 104 is located within the storage space 30 of the refrigerator 100. When the compressor 101 is turned on, the temperature of the evaporator 104 drops. The hot air within the storage space 30, under the action of the fan 105, exchanges heat with the evaporator 104 through the return air vent 106 and is converted into low-temperature gas. This low-temperature gas then passes through the air duct 107 and is delivered to the storage space 30 through the air outlet 108, completing a forced convection air circulation cycle and thereby cooling the storage space 30. When the compressor 101 stops, there is a certain pressure difference between the evaporator 104 and the condenser 102. The refrigerant will migrate to the condenser 102 through the throttling device 103 and exchange heat with the compressor 101, causing the temperature of the evaporator 104 to rise. After the compressor 101 is started again, more energy is required to compensate for the refrigerant loss in the evaporator 104, resulting in energy waste and increased energy consumption of the refrigerator 100.

[0021] In order to solve the technical problems existing in the above-mentioned prior art, an embodiment of the present application provides a refrigeration component, which can reduce the heat loss caused by refrigerant reflux and heat exchange when the compressor is shut down, improve the heat exchange efficiency of the evaporator, and thus reduce energy consumption.

[0022] See also Figure 3 , Figure 3 This is a schematic diagram of the first structure of the refrigeration component provided in an embodiment of the present application.

[0023] The embodiment of the present application provides a refrigeration assembly 20, which includes a switching valve 21, a compressor 22, a condenser 23, a first evaporator 24, and a second evaporator 25. The switching valve 21 has a first port a, a second port b, and a third port c. Through switching, the first port a can be connected not only to the second port b, but also to the third port c. The compressor 22 is connected to the second port b. The condenser 23 is connected to the compressor 22. The first evaporator 24 has a first connecting end and a second connecting end, the first connecting end being connected to the condenser 23, and the second connecting end being connected to the first port a. The second evaporator 25 has a third connecting end and a fourth connecting end, the third connecting end being connected to the first connecting end of the first evaporator 24, and the fourth connecting end being connected to the third port c.

[0024] When the compressor 22 is working, the switching valve 21 is connected to the first port a and the second port b. The refrigeration assembly 20 can form a first circulating refrigeration flow path including the switching valve 21 , the compressor 22 , the condenser 23 and the first evaporator 24 .

[0025] When the compressor 22 is not operating, the switching valve 21 connects the first port a and the third port c, and the refrigeration assembly 20 forms a second circulating refrigeration flow path between the first evaporator 24 and the second evaporator 25. The switching action of the switching valve 21 prevents the refrigerant from flowing back to the condenser 23 and causing the evaporator temperature to rise, and allows the refrigerant to flow to the second evaporator 25, thereby increasing the cooling area of ​​the refrigerant, improving cooling efficiency, and reducing energy consumption.

[0026] Specifically, when refrigerator 200 is operating normally, first port a of switching valve 21 is connected to second port b, and third port c is closed. Normal cooling is achieved through compressor 22, condenser 23, and first evaporator 24. When compressor 22 is shut down, second port b of switching valve 21 is connected to third port c, and first port a is closed, forming a closed circuit between first evaporator 24 and second evaporator 25. Due to the pressure differential between the first and second evaporators 24, refrigerant in the first evaporator 24 flows into the second evaporator 25, causing the temperature in the second evaporator 25 to drop and heat exchange with the outside world. This is until compressor 22 restarts, and switching valve 21 switches back to connecting first port a to second port b.

[0027] The refrigeration assembly 20 provided in the embodiment of the present application can reduce the migration of refrigerant to the condenser 23 when the compressor 22 is stopped, and migrate part of the refrigerant in the first evaporator 24 to the second evaporator 25 through the gravity effect of the refrigerant. When a new cooling cycle begins, the second evaporator 25 can be pre-cooled, thereby reducing the load on the compressor 22 and reducing energy consumption.

[0028] See also Figure 4 , Figure 4 This is a second structural schematic diagram of the refrigeration component provided in an embodiment of the present application.

[0029] The refrigeration assembly 20 further includes a cold storage structure 26, which is disposed on the second evaporator 25. The cold storage structure 26 can store cold energy and absorb a large amount of cold energy. Thus, when the compressor 22 is not operating, a large amount of cold energy can be released to the storage space 41 of the refrigerator. This slows down the rate of temperature rise in the storage space of the refrigerator, thereby extending the interval between two startups of the compressor 22, reducing the number of startups and the on-off rate of the compressor 22, and achieving energy conservation.

[0030] The cold storage structure 26 is a cold storage plate, which is attached to the surface of the second evaporator 25 to increase the contact area between the cold storage structure and the second evaporator 25, thereby improving heat exchange efficiency.

[0031] The cold storage structure 26 can directly engage in close heat exchange with the second evaporator 25, or it can be spaced apart from the second evaporator 25 and provided with a heat exchange fan for air-cooling heat exchange, i.e., the airflow blown by the heat exchange fan sequentially passes through the second evaporator 25 and the cold storage structure 26. When the cold storage structure 26 engages in close heat exchange with the second evaporator 25, the connection structure between the cold storage structure 26 and the second evaporator 25 can be attached to the inner or outer surface of the second evaporator 25. The second evaporator 25 includes multiple layers of heat exchange plates, and the inner and outer surfaces of each layer of heat exchange plates are attached to the cold storage structure 26.

[0032] The refrigeration assembly 20 provided in this embodiment of the present application further includes a throttle member 27, which is connected to the condenser 23 and the first evaporator 24, respectively. This throttle member 27 is used to regulate the flow of the refrigerant in the first circulating refrigeration circuit. The throttle member 27 is a capillary tube or a throttle valve. In other embodiments of the present application, the throttle member 27 may be other types of throttling and pressure-reducing elements, which are not specifically listed here.

[0033] See also Figure 5 , Figure 5 This is a schematic diagram of the structure of a refrigerator provided in an embodiment of the present application. This embodiment of the present application also provides a refrigerator 200, which includes the refrigeration assembly 20 of the above embodiment, and the refrigeration assembly 20 can provide cold energy for the refrigerator 200 to cool the storage space 41 of the refrigerator 200.

[0034] Specifically, the refrigerator 200 includes a refrigeration compartment 40 and an air duct structure 60. The refrigeration compartment 40 can be a refrigerator compartment or a freezer compartment.

[0035] The refrigeration compartment 40 has a storage space 41. The air duct structure 60 has an air return port 61 and an air outlet 62, and the air return port 61 and the air outlet 62 are in communication with the storage space 41. The first evaporator 24 and the second evaporator 25 are disposed in the air duct structure 60.

[0036] The second evaporator 25 is disposed at the return air port 61 , and the cold storage structure 26 of the refrigeration assembly 20 can also be disposed at the return air port 61 , which can effectively pre-cool the accommodation space 41 .

[0037] The refrigerator 200 also includes a fan 80, which is arranged at the air outlet 62. The fan 80 can determine whether to run according to the temperature in the storage space 41. For example, when the compressor 22 is suspended, the temperature in the storage space 41 is higher than the preset temperature, and the fan 80 starts running; when the temperature in the storage space 41 is lower than or equal to the preset temperature, the fan 80 stops running. In an embodiment of the present application, after the compressor 22 stops, the fan stops running after reaching the shutdown condition. When the fan reaches the start-up condition and starts running again, the gas in the storage space 41 will be pre-cooled by the second evaporator 25 and the cold storage structure 26 through the return air port 61. At this time, the compressor 22 restarts, and the air in the storage space 41 formally exchanges heat with the first evaporator 24 again. In this way, by pre-cooling first and then formally exchanging heat, the time when the compressor 22 is suspended can be extended, the heat exchange efficiency can be improved, and energy consumption can be reduced.

[0038] The refrigeration assembly 20 and refrigerator 200 provided in the embodiment of the present application include a switching valve 21, a compressor 22, a condenser 23, a first evaporator 24, and a second evaporator 25. Through the switching action of the switching valve 21, when the compressor 22 is working, the refrigeration assembly 20 can form a first circulating refrigeration flow path consisting of the switching valve 21, the compressor 22, the condenser 23, and the first evaporator 24; when the compressor 22 is not working, the refrigeration assembly 20 can form a second circulating refrigeration flow path consisting of the first evaporator 24 and the second evaporator 25. The switching action of the switching valve 21 can prevent the refrigerant from flowing back to the condenser 23 and allow the refrigerant to flow to the second evaporator 25, thereby increasing the cooling area of ​​the refrigerant, improving the refrigeration efficiency, and reducing energy consumption.

[0039] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0040] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more features.

[0041] The above describes in detail the refrigeration assembly and refrigerator provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is intended only to facilitate understanding of the present application. Furthermore, those skilled in the art will appreciate that variations in the specific implementation methods and scope of application may occur based on the principles of the present application. In summary, the contents of this specification should not be construed as limiting the present application.

Claims

1. A refrigeration component, characterized in that: include: a switching valve having a first port, a second port, and a third port, wherein the first port is communicable with the second port, and the first port is communicable with the third port; a compressor, the compressor being in communication with the second port; a condenser, the condenser being in communication with the compressor; a first evaporator, the first evaporator having a first connection end and a second connection end, the first connection end being connected to the condenser, and the second connection end being in communication with the first port; The second evaporator has a third connection end and a fourth connection end. The third connection end is communicated with the first connection end of the first evaporator, and the fourth connection end is communicated with the third port.

2. The refrigeration assembly according to claim 1, characterized in that It also includes a cold storage structure, which is arranged on the second evaporator.

3. The refrigeration assembly according to claim 2, characterized in that The cold storage structure is a cold storage plate, and the cold storage plate is attached to the surface of the second evaporator.

4. The refrigeration assembly according to claim 2, wherein: The second evaporator includes multiple layers of heat exchange plates, and the inner surface and the outer surface of each layer of the heat exchange plates are covered with the cold storage structure.

5. The refrigeration assembly according to any one of claims 1 to 4, characterized in that: It also includes a throttling member, which is connected to the condenser and the first evaporator respectively.

6. The refrigeration assembly according to claim 5, characterized in that The throttling element is a capillary tube.

7. A refrigerator, characterized in that: It comprises a refrigeration assembly, wherein the refrigeration assembly is the refrigeration assembly according to any one of claims 1 to 6.

8. The refrigerator according to claim 7, characterized in that Also includes: A refrigeration compartment, wherein the refrigeration compartment has a receiving space; An air duct structure is provided, wherein the air duct structure has an air return port and an air outlet, the air return port and the air outlet are in communication with the accommodating space, and the first evaporator and the second evaporator are arranged in the air duct structure.

9. The refrigerator according to claim 8, characterized in that The second evaporator is arranged at the return air port.

10. The refrigerator according to claim 8, characterized in that It also includes a fan, which is arranged at the air outlet.

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