Refrigerating system and refrigerator
By using solenoid valves to control the flow of refrigerant in the refrigerator refrigeration system, the problem of high energy consumption in multi-compartment computer-controlled refrigerators is solved, achieving faster cooling speed and lower energy consumption.
Patent Information
- Application Number
- CN202422461375.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-10-11
AI Technical Summary
The existing multi-compartment computer-controlled refrigerator has the problems of high refrigeration energy consumption, slow refrigeration speed and increased power.
A solenoid valve is used to control the flow direction of the refrigerant. The refrigerant first passes through the freezing evaporator, enters the solenoid valve through the inlet, and then flows to the temperature-variable evaporator through the first outlet and/or flows to the refrigeration evaporator through the second outlet, thereby improving the dryness of the refrigerant, increasing the heat transfer coefficient between the evaporation tube and the outside of the tube, increasing the total heat exchange capacity of the system, and reducing power consumption.
The cooling speed is improved, the energy consumption is reduced, and a more efficient cooling effect is achieved.
Smart Images
Figure CN223319370U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of refrigerators, and in particular to a refrigeration system and a refrigerator. Background Art
[0002] Refrigeration includes mechanical control refrigeration and computer control refrigeration. Computer control refrigerators can not only independently control the temperature of each compartment, but also have more precise temperature control, which is why they are favored by users. In computer control refrigerators, the refrigerant first passes through the refrigeration evaporator (or variable temperature evaporator) and then through the freezing evaporator; however, the refrigerant first passes through the refrigeration evaporator (or variable temperature evaporator), the refrigerant dryness is too low, and the heat transfer coefficient K of the evaporator tube is too low. 管 And the heat transfer coefficient of the air outside the tube K 外 If both remain unchanged, the heat transfer coefficient K of the refrigerant inside the tube 内 becomes smaller, resulting in the total heat transfer coefficient K of the entire system 总 When the heat load is constant, the heat exchange capacity of the system decreases, the cooling speed slows down, the power increases, and the energy consumption of the entire system increases. Therefore, the existing multi-compartment computer-controlled refrigerator has the technical problem of high cooling energy consumption. Utility Model Content
[0003] The main purpose of this application is to provide a refrigeration system and a refrigerator to solve the technical problem of high refrigeration energy consumption of multi-compartment computer-controlled refrigerators in the prior art.
[0004] In a first aspect, the present application provides a refrigeration system for a refrigerator, comprising:
[0005] Refrigerated evaporator;
[0006] a solenoid valve, wherein the inlet of the solenoid valve is connected to the outlet of the refrigeration evaporator;
[0007] a temperature-variable evaporator, the temperature-variable evaporator being connected to the first outlet of the solenoid valve;
[0008] A refrigerated evaporator is connected to the second outlet of the solenoid valve.
[0009] Optionally, the solenoid valve has a first state and a second state;
[0010] When the solenoid valve is in the first state, the inlet of the solenoid valve is connected to the first outlet and disconnected from the second outlet;
[0011] When the solenoid valve is in the second state, the inlet of the solenoid valve is connected to the second outlet and disconnected from the first outlet.
[0012] Optionally, the refrigeration system further includes a throttling device, and the outlet of the throttling device and the inlet of the freezing evaporator are connected through the throttling device.
[0013] Optionally, the throttling device includes a capillary tube.
[0014] Optionally, the refrigeration system further includes a condenser, and the outlet of the condenser is connected to the inlet of the throttling device.
[0015] Optionally, the refrigeration system further includes a compressor, the outlet of the compressor is connected to the inlet of the condenser; the outlet of the temperature variable evaporator is connected to the inlet of the compressor; the outlet of the refrigeration evaporator is connected to the inlet of the compressor.
[0016] Optionally, the refrigeration system further includes a return pipeline, and the inlet of the compressor is connected to the return pipeline; the outlet of the temperature variable evaporator and the outlet of the refrigeration evaporator are connected to the return pipeline.
[0017] Optionally, the third outlet of the solenoid valve is connected to the inlet of the compressor.
[0018] Optionally, the refrigeration system further includes a controller, and the controller is used to control the switching of the working state of the solenoid valve.
[0019] An embodiment of the present application further provides a refrigerator comprising the refrigeration system as described above.
[0020] In the technical solution of the embodiment of the present application, the refrigerant first passes through the refrigeration evaporator, enters the solenoid valve through the inlet of the solenoid valve, and then flows to the temperature variable evaporator through the first outlet and / or flows to the refrigeration evaporator through the second outlet. Since the refrigerant first passes through the refrigeration evaporator in this refrigeration system, the dryness of the refrigerant is higher, and the heat transfer coefficient K of the evaporator tube is 管 And the heat transfer coefficient of the air outside the tube K 外 If both remain unchanged, the heat transfer coefficient K of the refrigerant inside the tube 内 Improve the total heat transfer coefficient K of the entire system 总 When the heat load is constant, the system heat exchange capacity becomes larger, the cooling speed is faster, the power is reduced, and the energy consumption of the entire system is reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.
[0022] Figure 1 Schematic diagram of the structure of the refrigeration system provided in the embodiment of the present application Figure 1 ;
[0023] Figure 2 A schematic diagram of the refrigerant flow direction when the solenoid valve in the refrigeration system provided by an embodiment of the present application is in the first state;
[0024] Figure 3 A schematic diagram of the refrigerant flow direction when the solenoid valve in the refrigeration system provided by an embodiment of the present application is in the second state;
[0025] Figure 4 Schematic diagram of the structure of the refrigeration system provided in the embodiment of the present application Figure 2 ;
[0026] Figure 5 Schematic diagram of the structure of the refrigeration system provided in the embodiment of the present application Figure 3 ;
[0027] Figure 6 The figure is a schematic diagram of the structure of a multi-compartment computer-controlled refrigeration system in the prior art.
[0028] Reference Signs List
[0029] 101 Refrigeration evaporator 105 Condenser 102 solenoid valve 106 Throttling device 103 variable temperature evaporator 107 compressor 104 Refrigeration evaporator DETAILED DESCRIPTION
[0030] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.
[0031] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0032] In this application, unless otherwise specified or limited, the terms "connected" and "fixed" should be understood in a broad sense. For example, "fixed" can mean fixed connection, detachable connection, or integration; it can mean mechanical connection or electrical connection; it can mean direct connection or indirect connection through an intermediate medium; it can mean internal connection between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.
[0034] Figure 6 A computer-controlled refrigeration system for a multi-compartment refrigerator in the prior art is shown. The system includes a compressor 107', a condenser 105', a solenoid valve 102', a refrigeration throttling capillary tube 108', a temperature-variable throttling capillary tube 109', a freezing throttling capillary tube 106', a refrigeration evaporator 104', a temperature-variable evaporator 103', and a freezing evaporator 101'. The outlet of the compressor 107' is connected to the condenser 105', and the outlet of the condenser 105' is connected to the inlet of the solenoid valve 102'. The first outlet of the solenoid valve 102' is connected to the inlet of the refrigeration evaporator 104' via the refrigeration throttling capillary tube 108'. The second outlet of the solenoid valve 102' is connected to the inlet of the temperature-variable evaporator 103' via the temperature-variable throttling capillary tube 109'. The third outlet of the solenoid valve 102', the outlet of the variable temperature evaporator 103', and the outlet of the refrigerated evaporator 104' are connected to the inlet of the freezing evaporator 101' through the freezing throttling capillary 106'. The outlet of the freezing evaporator 101' is connected to the inlet of the compressor 107'. By controlling the connection relationship between the inlet of the solenoid valve 102' and the first outlet, the second outlet and the third outlet respectively, the temperature of the refrigerated room, the frozen room and the variable temperature room can be adjusted. In this refrigeration system, the refrigerant first goes through the refrigerated evaporator (or variable temperature evaporator), the dryness of the refrigerant is too low, and the heat transfer coefficient K of the evaporator tube is too low. 管 And the heat transfer coefficient of the air outside the tube K 外 If both remain unchanged, the heat transfer coefficient K of the refrigerant inside the tube 内 becomes smaller, resulting in the total heat transfer coefficient K of the entire system 总 When the heat load is constant, the heat exchange capacity of the system becomes smaller, the cooling speed is slow, and the power increases, resulting in an increase in the energy consumption of the entire system.
[0035] To this end, the present application embodiment proposes a refrigeration system for a refrigerator. Figure 1As shown, the refrigeration system includes:
[0036] Refrigeration evaporator 101;
[0037] A solenoid valve 102 , wherein the inlet of the solenoid valve 102 is connected to the outlet of the refrigeration evaporator 101 ;
[0038] a variable temperature evaporator 103 , the variable temperature evaporator 103 being connected to the first outlet of the solenoid valve 102 ;
[0039] The refrigeration evaporator 104 is connected to the second outlet of the solenoid valve 102 .
[0040] In the technical solution of the embodiment of the present application, the refrigerant first passes through the freezing evaporator 101, enters the solenoid valve 102 through the inlet of the solenoid valve 102, and then flows to the temperature variable evaporator 103 through the first outlet and / or flows to the refrigeration evaporator 104 through the second outlet. Since in this refrigeration system, the refrigerant first passes through the freezing evaporator 101, the dryness of the refrigerant is higher, and the heat transfer coefficient K of the evaporator tube is 管 And the heat transfer coefficient of the air outside the tube K 外 If both remain unchanged, the heat transfer coefficient K of the refrigerant inside the tube 内 Improve the total heat transfer coefficient K of the entire system 总 When the heat load is constant, the system heat exchange capacity becomes larger, the cooling speed is faster, the power is reduced, and the energy consumption of the entire system is reduced.
[0041] When used in a refrigerator, the freezing evaporator 101 is used to provide cooling to the freezing chamber; the refrigerating evaporator 104 is used to provide cooling to the refrigerating chamber; and the variable temperature evaporator 103 is used to provide cooling to the variable temperature chamber.
[0042] As an optional implementation of the above embodiment, Figure 2 and Figure 3 As shown, the solenoid valve 102 has a first state and a second state. When the solenoid valve 102 is in the first state, the inlet of the solenoid valve 102 is connected to the first outlet and disconnected from the second outlet. When the solenoid valve 102 is in the second state, the inlet of the solenoid valve 102 is connected to the second outlet and disconnected from the first outlet. In this embodiment, by switching the solenoid valve 102 between the first and second states, the refrigerant can flow into the temperature-variable evaporator 103 and the refrigeration evaporator 104 in a time-sharing manner, avoiding the adverse effects of simultaneous freezing and refrigeration on refrigeration efficiency and reducing energy consumption.
[0043] For example, in the embodiment, the solenoid valve 102 is a two-position three-way solenoid valve 102 .
[0044] As an optional implementation of the above embodiment, Figure 4 and Figure 5 As shown, the refrigeration system also includes a throttling device 106, and the outlet of the throttling device 106 and the inlet of the freezing evaporator 101 are connected through the throttling device 106. The low-temperature and low-pressure refrigerant after throttling and decompression by the throttling device 106 enters the freezing evaporator 101. In the technical solution of the embodiment of the present application, the throttling device 106 can be arranged only before the freezing evaporator 101; compared with the prior art, the configuration of the variable temperature throttling capillary and the refrigeration throttling capillary can be reduced, thereby reducing costs. The main reason for this is that although the temperature of the refrigerant after flowing through the freezing evaporator 101 increases, it can still meet the refrigeration demand of the refrigeration evaporator 104 or the variable temperature evaporator 103.
[0045] In some embodiments, the throttling device 106 includes a capillary tube. In other embodiments, the throttling device 106 may also include an expansion valve. Both the capillary tube and the expansion valve have good throttling and pressure reduction functions.
[0046] As an optional implementation of the above embodiment, Figure 4 and Figure 5 As shown, the refrigeration system further includes a condenser 105, and the outlet of the condenser 105 is connected to the inlet of the throttling device 106. After passing through the condenser 105, the refrigerator releases heat, and the refrigerant after heat release enters the throttling device 106 to reduce pressure and release heat.
[0047] As an optional implementation of the above embodiment, Figure 4 and Figure 5 As shown, the refrigeration system further includes a compressor 107, the outlet of which is connected to the inlet of the condenser 105; the outlet of the temperature-variable evaporator 103 is connected to the inlet of the compressor 107; and the outlet of the refrigeration evaporator 104 is connected to the inlet of the compressor 107. After passing through the temperature-variable evaporator 103 and / or the refrigeration evaporator 104, the refrigerant enters the compressor 107 through its inlet. The compressor 107 compresses the refrigerant for the next cycle, forming a high-temperature and high-pressure refrigerant.
[0048] The refrigeration system proposed in the above embodiment works as follows: the compressor 107 compresses the refrigerant after passing through the variable temperature evaporator 103 and / or the refrigerated evaporator 104, and compresses it into a high-temperature and high-pressure refrigerant; the high-temperature and high-pressure refrigerant releases heat after passing through the condenser 105, and the temperature of the refrigerant drops; then, the refrigerant is throttled, decompressed and released heat by the throttling device 106, and becomes a low-temperature and low-pressure refrigerant; the low-temperature and low-pressure refrigerant passes through the freezing evaporator 101 to provide cooling to the freezer compartment; according to the cooling demand of the refrigerated compartment and / or the variable temperature evaporator, the state of the solenoid valve 102 is controlled so that the refrigerant flowing out of the freezing evaporator 101 can flow to the refrigerated evaporator 104 and / or the variable temperature evaporator 103; the refrigerant passing through the refrigerated evaporator 104 and / or the variable temperature evaporator 103 flows to the compressor 107, and this cycle is repeated to provide cooling to multiple compartments of the refrigerator.
[0049] As an alternative embodiment to the above embodiment, the refrigeration system further includes a return line connected to the inlet of the compressor 107; the outlets of the temperature-variable evaporator 103 and the outlet of the refrigeration evaporator 104 are also connected to the return line. That is, in this embodiment, the refrigerant flowing out of the refrigeration evaporator 104 and the temperature-variable evaporator 103 flows into the compressor 107 through the return line, reducing the number of refrigeration system pipelines.
[0050] As an optional implementation of the above embodiment, Figure 5 As shown, the third outlet of the solenoid valve 102 is connected to the inlet of the compressor 107. That is, when neither the variable temperature room nor the refrigerated room requires refrigeration, the refrigerant flowing out of the evaporator 101 can be directly discharged to the compressor 107; or, depending on the cooling capacity required by the variable temperature room or the refrigerated room, a portion of the refrigerant can be discharged through the third outlet to adjust the refrigerant flow rate.
[0051] As an optional implementation of the above embodiment, the refrigeration system further includes a controller (not shown in the example), which is used to control the switching of the working state of the solenoid valve 102. In the embodiment, the controller is electrically connected to the solenoid valve 102. The controller is used to output an execution instruction signal to the solenoid valve 102, and the solenoid valve 102 performs the corresponding action according to the execution instruction signal to switch the working state of the solenoid valve 102. For example, when the variable temperature room needs to be refrigerated, the controller sends an execution instruction signal, and the solenoid valve 102 switches from the second state to the first state; for another example, when the variable temperature room needs to be refrigerated, the controller sends an execution instruction signal, and the solenoid valve 102 switches from the first state to the second state. For another example, when both the variable temperature room and the cold storage room do not need to be refrigerated, the solenoid valve 102 cuts off the inlet and the first outlet and the second outlet, and connects the inlet and the third outlet, so that the refrigerant passing through the freezing evaporator 101 flows directly to the compressor 107.
[0052] The present application also provides a refrigerator comprising a refrigeration system. The refrigeration system adopts part or all of the technical solutions of the aforementioned embodiments, and thus possesses part or all of the technical advantages proposed in the aforementioned embodiments. The refrigerator comprises a freezer compartment, a refrigerator compartment, and a variable temperature chamber. The freezing evaporator 101 is provided corresponding to the freezer compartment and is used to provide cooling to the freezer compartment. The refrigeration evaporator 104 is provided corresponding to the refrigerator compartment and is used to provide cooling to the refrigerator compartment. The variable temperature evaporator 103 is provided corresponding to the variable temperature chamber and is used to provide cooling to the variable temperature chamber.
[0053] The above description is merely an optional embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structural transformation made by using the contents of the present application specification and drawings under the application concept of the present application, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present application.
Claims
1. A refrigeration system for a refrigerator, characterized in that: include: Refrigerated evaporator; a solenoid valve, wherein the inlet of the solenoid valve is connected to the outlet of the refrigeration evaporator; a temperature-variable evaporator, the temperature-variable evaporator being connected to the first outlet of the solenoid valve; A refrigerated evaporator is connected to the second outlet of the solenoid valve.
2. The refrigeration system according to claim 1, wherein: The solenoid valve has a first state and a second state; When the solenoid valve is in the first state, the inlet of the solenoid valve is connected to the first outlet and disconnected from the second outlet; When the solenoid valve is in the second state, the inlet of the solenoid valve is connected to the second outlet and disconnected from the first outlet.
3. The refrigeration system according to claim 1, wherein: The refrigeration system further comprises a throttling device, and the outlet of the throttling device and the inlet of the freezing evaporator are communicated with each other through the throttling device.
4. The refrigeration system according to claim 3, wherein: The throttling device includes a capillary tube.
5. The refrigeration system according to claim 3, wherein: The refrigeration system further includes a condenser, wherein the outlet of the condenser is communicated with the inlet of the throttling device.
6. The refrigeration system according to claim 5, wherein: The refrigeration system further comprises a compressor, wherein the outlet of the compressor is in communication with the inlet of the condenser; The outlet of the temperature-variable evaporator is communicated with the inlet of the compressor; the outlet of the refrigeration evaporator is communicated with the inlet of the compressor.
7. The refrigeration system according to claim 6, wherein: The refrigeration system further comprises a return pipeline, and the inlet of the compressor is connected to the return pipeline; The outlet of the temperature-variable evaporator and the outlet of the refrigeration evaporator are connected to the reflux pipeline.
8. The refrigeration system according to claim 6, wherein: The third outlet of the solenoid valve is connected to the inlet of the compressor.
9. The refrigeration system according to any one of claims 1 to 8, wherein: The refrigeration system further includes a controller, which is used to control the switching of the working state of the solenoid valve.
10. A refrigerator, characterized in that: A refrigeration system comprising the refrigeration system according to any one of claims 1 to 9.