Refrigerating system and refrigerator
By introducing a pressure balancing valve in parallel with the second refrigerant pipeline in the refrigeration system, the problem of delayed compressor startup during refrigerator inspection was solved, the pressure difference on both sides of the compressor was quickly reduced, and the inspection efficiency was improved.
Patent Information
- Application Number
- CN202422839326.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-20
AI Technical Summary
During the inspection process, the refrigerator starts up late because the pressure difference on both sides of the compressor is not reduced, which reduces the inspection efficiency.
A pressure balancing valve is introduced into the refrigeration system. By connecting the second refrigerant pipeline in parallel with the first refrigerant pipeline, the pressure balancing valve is opened during detection to quickly reduce the refrigerant pressure and ensure that the pressure difference on both sides of the compressor meets the starting conditions.
Through the design of the pressure balancing valve, the refrigerant pressure can be quickly reduced, the compressor startup waiting time is shortened, and the detection efficiency is improved.
Smart Images
Figure CN223484635U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of refrigeration technology, and in particular to a refrigeration system and a refrigerator. Background Technology
[0002] When a refrigerator is running normally, the side of the compressor closer to the condenser is the high-pressure side, while the side closer to the throttling device is the low-pressure side. In other words, there is a large pressure difference on both sides of the compressor, which provides power for the refrigerant inside.
[0003] When a refrigerator stops cooling, the pressure difference across the compressor gradually decreases until it reaches equilibrium. If the pressure difference is close to equilibrium or the refrigerator is turned on again after equilibrium, the compressor will start immediately. However, during the refrigerator's testing process, if the refrigerator is turned on immediately after it stops cooling, the compressor will not start immediately because the pressure difference has not yet decreased. A period of time needs to be allowed for the pressure difference across the compressor to decrease before the compressor can start, which greatly reduces testing efficiency. Utility Model Content
[0004] This application provides a refrigeration system and a refrigerator that can improve detection efficiency.
[0005] This application provides a refrigeration system, including:
[0006] A first refrigerant line and a compressor, a condenser, a first throttling device, and a first evaporator connected in sequence by the first refrigerant line;
[0007] A second refrigerant line and a pressure balancing valve, wherein the pressure balancing valve is connected in parallel with the first refrigerant line via the second refrigerant line.
[0008] This application also provides a refrigerator, including a first refrigeration chamber and a refrigeration system, wherein the refrigeration system is the aforementioned refrigeration system, and the first evaporator is used to refrigerate the first refrigeration chamber.
[0009] The refrigeration system and refrigerator provided in this application embodiment include a first refrigerant pipeline, a second refrigerant pipeline, a compressor, a condenser, a first throttling device, a first evaporator, and a pressure balancing valve. The first refrigerant pipeline, along with the compressor, condenser, first throttling device, first evaporator, and pressure balancing valve, forms a first refrigeration circuit. The pressure balancing valve is connected in parallel with the first refrigerant pipeline via the second refrigerant pipeline. It is understood that when the refrigeration system is working normally, the pressure balancing valve is closed, and the first refrigeration circuit operates normally. When the refrigeration system is being tested, after the compressor in the refrigeration system is de-energized and stops working, the pressure balancing valve opens, allowing refrigerant to flow in the first refrigeration circuit and the second refrigerant pipeline. This rapidly reduces the refrigerant pressure in the refrigeration system, naturally reducing the pressure across the compressor to quickly meet the compressor's starting conditions, thus improving testing efficiency. Attached Figure Description
[0010] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0011] Figure 1 This is a schematic diagram of a first structure of a refrigeration system provided in an embodiment of this application.
[0012] Figure 2 This is a schematic diagram of a second structure of a refrigeration system provided in an embodiment of this application. Detailed Implementation
[0013] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0014] This application provides a refrigeration system and a refrigerator, which can improve detection efficiency. The following is a detailed description in conjunction with the accompanying drawings.
[0015] See also Figure 1 , Figure 1 This is a schematic diagram of a first structure of a refrigeration system provided in an embodiment of this application.
[0016] This application provides a refrigeration system 100. The refrigeration system 100 includes a first refrigerant line 101, a second refrigerant line 106, a compressor 102, a condenser 103, a first throttling device 104, a first evaporator 105, and a pressure balancing valve 107.
[0017] The first refrigerant line 101, compressor 102, condenser 103, first throttling device 104, and first evaporator 105 form a first refrigeration circuit. The refrigerant circulates within this circuit, undergoing phase change at different pressures to achieve refrigeration. For example, the compressor 102 first draws in a low-temperature, low-pressure gaseous refrigerant, converting it into a high-temperature, high-pressure gaseous refrigerant. Then, the high-temperature, high-pressure gaseous refrigerant is condensed by the condenser 103 into a high-pressure, low-temperature liquid refrigerant. Next, the high-pressure, low-temperature liquid refrigerant passes through the first throttling device 104 to become a low-temperature, low-pressure liquid refrigerant. Following this, the low-temperature, low-pressure liquid refrigerant is converted back into a low-temperature, low-pressure gas by the evaporator, and finally re-enters the compressor 102. Thus, the compressor 102 primarily provides power, the condenser 103 is essentially a radiator, and the first evaporator 105 is essentially a heat exchanger. When the refrigeration system 100 is applied to a refrigerator, the first evaporator 105 allows the low-temperature, low-pressure liquid refrigerant to absorb heat from inside the refrigerator, thereby lowering the internal temperature.
[0018] Therefore, when the refrigeration system 100 is operating, the refrigerant pressure in the first refrigerant line 101 on both sides of the compressor 102 is different. If the refrigeration system 100 is de-energized and stops operating, the refrigerant pressure at various points in the first refrigeration circuit will tend to be uniform, so that the pressure difference of the refrigerant on both sides of the compressor 102 tends to be close to or equal to 0. However, it takes time for the refrigerant pressure to change. If the compressor 102 or the restart status of the refrigeration system 100 needs to be detected during the detection process, a certain amount of time needs to be waited for the pressure difference of the refrigerant on both sides of the compressor 102 to decrease. This undoubtedly reduces the detection efficiency.
[0019] In order to shorten the waiting time for the pressure difference on both sides of the compressor 102 to decrease, the refrigeration system 100 in this application also includes a second refrigerant line 106 and a pressure balancing valve 107, which can be connected in parallel with the first refrigerant line 101 through the second refrigerant line 106.
[0020] When the pressure balancing valve 107 is open, the first refrigerant line 101 is connected to the second refrigerant line 106. Refrigerant in the first refrigerant line 101 can then enter the second refrigerant line 106, which undoubtedly increases the volume of the refrigerant and helps to quickly reduce its pressure. More specifically, the pressure balancing valve 107 can be connected in parallel with the second refrigerant line 106 at any point in the refrigeration cycle loop, as long as it can increase the volume of the refrigerant when necessary, thus facilitating a rapid reduction in refrigerant pressure.
[0021] Understandably, when the refrigeration system 100 is operating normally, the pressure balancing valve 107 is closed, and the first refrigeration circuit operates normally. When the refrigeration system 100 is being tested, after the compressor 102 in the refrigeration system 100 is de-energized and stops working, the pressure balancing valve 107 opens, allowing refrigerant to flow in the first refrigeration circuit and the second refrigerant line 106. This rapidly reduces the refrigerant pressure in the refrigeration system 100, naturally reducing the pressure across the compressor 102 to quickly meet the compressor 102's starting conditions, thus improving testing efficiency. If the compressor 102 is powered on and operating normally, the pressure balancing valve 107 closes.
[0022] In some cases, the pressure balancing valve 107 is equipped with a power failure sensor, which is electrically connected to the compressor 102 and is used to sense the power supply status of the compressor 102. When the compressor 102 in the refrigeration system 100 is de-energized and stops working, the power failure sensor in the pressure balancing valve 107 detects this and controls the pressure balancing valve 107 to open, thereby balancing the pressure across the compressor 102. If the compressor 102 is powered on and operating normally, the power failure sensor detects this and controls the pressure balancing valve 107 to close.
[0023] In some cases, the pressure balancing valve 107 is connected in parallel to the first refrigerant line 101 between the compressor 102 and the first evaporator 105. That is, the pressure balancing valve 107 is located at the low-pressure end of the compressor 102. In this case, when the pressure balancing valve 107 is open, the refrigerant with lower pressure can enter the second refrigerant line 106 more smoothly, which can avoid noise caused by the refrigerant with higher pressure hitting the inner wall of the second refrigerant line 106.
[0024] In some embodiments, please refer to Figure 2 , Figure 2This is a schematic diagram of a second structure of the refrigeration system provided in this application embodiment. The refrigeration system 100 further includes a third refrigerant pipeline 108 and a second throttling device 109 and a second evaporator 110 connected sequentially to the third refrigerant pipeline 108. The third refrigerant pipeline 108 is connected to the inlet end of the first throttling device 104 and the outlet end of the first evaporator 105, respectively. The first throttling device 104 and the first refrigerant pipeline 101 are connected in parallel with the second throttling device 109 and the second refrigerant pipeline 106. The first refrigerant pipeline 101, the second refrigerant pipeline 106, and the third refrigerant pipeline 108 can be interconnected. Therefore, the first evaporator 105 and the second evaporator 110 can operate independently, thus avoiding mutual interference between them. When this refrigeration system 100 is applied in a refrigerator, the first evaporator 105 and the second evaporator 110 can correspond to different refrigeration chambers of the refrigerator.
[0025] The third refrigerant line 108, compressor 102, condenser 103, second throttling device 109, and second evaporator 110 form a second refrigeration circuit. The first refrigeration circuit and the second refrigeration circuit can share the compressor 102, condenser 103, and part of the first refrigerant line 101, so that the refrigeration system 100 occupies a smaller volume.
[0026] The refrigeration system 100 also includes a switching valve 111, which has an inlet end, a first outlet end, and a second outlet end. The inlet end of the switching valve 111 is connected to the outlet end of the compressor 102, the first outlet end of the switching valve 111 is connected to a first throttling device 104, and the second outlet end of the switching valve 111 is connected to a second throttling device 109. Through the switching action of the switching valve 111, the inlet end is connected only to the first outlet end, the inlet end is connected only to the second outlet end, or the inlet end is connected to both the first and second outlet ends, further controlling the first and second refrigeration circuits to start individually or simultaneously.
[0027] The compressor 102 can be a fixed-frequency compressor, which has advantages such as high stability and low cost.
[0028] The condenser 103 is either a forced convection heat exchange condenser or a natural convection heat exchange condenser. The refrigeration system 100 may also include a condensing fan; when the condenser 103 is a forced convection heat exchange condenser, the condensing fan is positioned opposite to the condenser 103. Forced convection heat exchange condensers offer superior heat dissipation.
[0029] The refrigeration system 100 also includes a first fan, which is arranged opposite to the first evaporator 105 to improve the refrigeration effect of the first evaporator 105.
[0030] The refrigeration system 100 also includes a second fan, which is arranged opposite to the second evaporator 110 to improve the refrigeration effect of the second evaporator 110.
[0031] The first throttling device 104 can be a capillary tube or an electronic expansion valve. The first throttling device 104 can also be a capillary tube or an electronic expansion valve. Capillary tubes are less expensive and easier to manufacture. The valve opening of the electronic expansion valve is adjustable, thereby controlling the refrigerant flow rate.
[0032] This application also provides a refrigerator, which includes a first cooling chamber and a cooling system 100. The cooling system 100 is the same as the cooling system 100 in the above embodiments, and the first evaporator 105 is used to cool the first cooling chamber. Since this refrigerator adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here. It should be noted that the multi-cycle cooling system 100 proposed in this embodiment is not only applicable to refrigerators, but also to air conditioners and other refrigeration devices.
[0033] In some cases, the refrigerator also includes a second refrigeration chamber, meaning the refrigerator includes a first refrigeration chamber and a second refrigeration chamber, which are independent of each other. The refrigeration system 100 also includes a third refrigerant line 108 and a second throttling device 109 and a second evaporator 110 connected in sequence by the third refrigerant line 108. The third refrigerant line 108 is connected to the inlet end of the first throttling device 104 and the outlet end of the first evaporator 105, respectively. The first throttling device 104 and the first refrigerant line 101 are connected in parallel with the second throttling device 109 and the second refrigerant line 106.
[0034] Furthermore, the first refrigeration chamber can be a refrigerator compartment, and the second refrigeration chamber can be a freezer compartment.
[0035] Therefore, the first evaporator 105 and the second evaporator 110 can operate independently, thus avoiding mutual interference between them. When this refrigeration system 100 is applied in a refrigerator, the first evaporator 105 and the second evaporator 110 can correspond to the first and second refrigeration chambers of the refrigerator.
[0036] The third refrigerant line 108, compressor 102, condenser 103, second throttling device 109, and second evaporator 110 form a second refrigeration circuit. The first refrigeration circuit and the second refrigeration circuit can share the compressor 102, condenser 103, and part of the first refrigerant line 101, so that the refrigeration system 100 occupies a smaller volume.
[0037] The refrigeration system 100 and refrigerator provided in this application embodiment include a first refrigerant line 101, a second refrigerant line 106, a compressor 102, a condenser 103, a first throttling device 104, a first evaporator 105, and a pressure balancing valve 107. The first refrigerant line 101, compressor 102, condenser 103, first throttling device 104, first evaporator 105, and pressure balancing valve 107 form a first refrigeration circuit. The pressure balancing valve 107 is connected in parallel with the first refrigerant line 101 through the second refrigerant line 106. It is understood that when the refrigeration system 100 is working normally, the pressure balancing valve 107 is closed, and the first refrigeration circuit works normally. When the refrigeration system 100 is being tested, after the compressor 102 in the refrigeration system 100 stops working, the pressure balancing valve 107 opens, and the refrigerant can flow in the first refrigeration circuit and the second refrigerant pipeline 106, thereby quickly reducing the pressure of the refrigerant in the refrigeration system 100, and naturally reducing the pressure at both ends of the compressor 102, so as to quickly meet the starting conditions of the compressor 102, which is beneficial to improving the testing efficiency.
[0038] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.
[0039] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.
[0040] The refrigeration system and refrigerator provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. A refrigeration system, characterized in that, include: A first refrigerant line and a compressor, a condenser, a first throttling device, and a first evaporator connected in sequence by the first refrigerant line; A second refrigerant line and a pressure balancing valve, wherein the pressure balancing valve is connected in parallel with the first refrigerant line via the second refrigerant line.
2. The refrigeration system according to claim 1, characterized in that, The pressure balancing valve is connected in parallel to the first refrigerant line between the compressor and the first evaporator.
3. The refrigeration system according to claim 1, characterized in that, The pressure balancing valve is equipped with a power failure sensor, which is electrically connected to the compressor.
4. The refrigeration system according to any one of claims 1 to 3, characterized in that, It also includes a third refrigerant line and a second throttling device and a second evaporator connected in sequence by the third refrigerant line. The third refrigerant line is connected to the inlet end of the first throttling device and the outlet end of the first evaporator, respectively. The first throttling device and the first refrigerant line are connected in parallel with the second throttling device and the second refrigerant line.
5. The refrigeration system according to claim 4, characterized in that, It also includes a switching valve having an inlet end, a first outlet end and a second outlet end. The inlet end of the switching valve is connected to the outlet end of the compressor, the first outlet end of the switching valve is connected to the first throttling device, and the second outlet end of the switching valve is connected to the second throttling device.
6. The refrigeration system according to any one of claims 1 to 3, characterized in that, The condenser is either a forced convection heat exchange condenser or a natural convection heat exchange condenser.
7. The refrigeration system according to any one of claims 1 to 3, characterized in that, The first throttling device is a capillary tube or an electronic expansion valve.
8. A refrigerator, characterized in that, It includes a first refrigeration chamber and a refrigeration system, wherein the refrigeration system is the refrigeration system according to any one of claims 1 to 7, and the first evaporator is used to refrigerate the first refrigeration chamber.
9. The refrigerator according to claim 8, characterized in that, The refrigeration system further includes a third refrigerant pipeline and a second throttling device and a second evaporator connected in sequence by the third refrigerant pipeline. The third refrigerant pipeline is connected to the inlet end of the first throttling device and the outlet end of the first evaporator, respectively. The first throttling device and the first refrigerant pipeline are connected in parallel with the second throttling device and the second refrigerant pipeline. The refrigerator further includes a second refrigeration chamber, and the second evaporator is used to refrigerate the second refrigeration chamber.
10. The refrigerator according to claim 9, characterized in that, The first refrigeration chamber is a refrigerator compartment, and the second refrigeration chamber is a freezer compartment.