Refrigerating system and refrigerating equipment
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TCL HOME APPLIANCES (HEFEI) CO LTD
- Filing Date
- 2025-05-19
- Publication Date
- 2026-05-12
AI Technical Summary
In existing refrigerator refrigeration systems, the flow rate of the freezing capillary tube is fixed, which cannot meet the user's needs to change the cooling rate and refrigeration temperature in different scenarios.
Multiple parallel refrigeration throttling elements are installed between the condenser and the refrigeration evaporator. By switching the unit, the refrigerant flow can be selectively controlled to flow through one or more throttling elements, thereby achieving flexible flow adjustment to meet different needs.
This system enables flexible adjustment of cooling rate and cooling temperature in different scenarios, improving the system's energy efficiency and reliability.
Smart Images
Figure CN224230439U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electrical manufacturing technology, and in particular to a refrigeration system and refrigeration equipment. Background Technology
[0002] Refrigerators, widely used in homes and businesses, maintain a low-temperature environment to effectively inhibit microbial growth and chemical reaction rates, thus preserving and storing food. Existing refrigerator refrigeration systems mainly consist of core components such as compressors, condensers, evaporators, and capillary tubes. Their working principle is based on the cyclical phase change of refrigerant. The compressor compresses low-temperature, low-pressure refrigerant gas into high-temperature, high-pressure gas, which is then condensed into a liquid state by the condenser. The liquid refrigerant then enters the capillary tube, where it is throttled and depressurized, becoming a low-temperature, low-pressure gas-liquid mixture. This mixture then enters the evaporator, rapidly evaporating and absorbing heat, lowering the temperature inside the refrigerator. The evaporated, low-temperature, low-pressure refrigerant gas is then drawn back into the compressor, and this cycle repeats continuously, achieving the refrigeration effect.
[0003] Capillary tubes play a crucial role in refrigeration systems. As a throttling element, they utilize their slender tube structure to reduce the pressure of high-pressure liquid refrigerant, allowing it to rapidly evaporate and absorb heat upon entering the evaporator, thus achieving the refrigeration cycle. However, because the flow rate of the capillary tubes in existing refrigerators is typically fixed, the cooling rate of the refrigerator also remains constant when the compressor speed is fixed. This fails to meet users' needs in certain scenarios where they require varying cooling rates and achieving lower refrigeration temperatures. Utility Model Content
[0004] Based on this, embodiments of this application provide a refrigeration system and refrigeration equipment.
[0005] In a first aspect, embodiments of this application provide a refrigeration system, including:
[0006] compressor;
[0007] A condenser, the inlet of which is connected to the outlet of the compressor;
[0008] Multiple refrigeration throttling elements, the inlets of which are all connected to the outlet of the condenser;
[0009] The refrigeration evaporator has multiple outlets of the refrigeration throttling elements connected to the inlet of the refrigeration evaporator, and the outlet of the refrigeration evaporator is connected to the inlet of the compressor; during the operation of the refrigeration system, refrigerant can selectively enter the refrigeration evaporator via one or more of the refrigeration throttling elements.
[0010] In some embodiments, at least two of the plurality of cryogenic throttling elements have different flow rates; alternatively, the flow rates of the plurality of cryogenic throttling elements are all different.
[0011] In some embodiments, the refrigeration system further includes:
[0012] The outlets of the main pipeline and the multiple refrigeration throttling elements are all connected to the inlet of the main pipeline, and the outlet of the main pipeline is connected to the inlet of the refrigeration evaporator.
[0013] In some embodiments, the refrigeration system further includes:
[0014] A first switching unit has a first inlet and multiple first outlets. The first inlet of the first switching unit is connected to the outlet of the condenser, and the inlets of the multiple refrigeration throttling elements are respectively connected to the multiple first outlets of the first switching unit.
[0015] In some embodiments, the refrigeration system further includes:
[0016] A refrigeration throttling element, wherein the inlet of the refrigeration throttling element is connected to the outlet of the condenser;
[0017] A refrigerated evaporator, wherein the outlet of the refrigerated throttling element is connected to the inlet of the refrigerated evaporator, and the outlet of the refrigerated evaporator is connected to the inlet of the refrigerated evaporator.
[0018] In some embodiments, the refrigeration system further includes:
[0019] The second switching unit has a second inlet, a third outlet, and a fourth outlet. The second inlet of the second switching unit is connected to the outlet of the condenser, the third outlet of the second switching unit is connected to the first inlet of the first switching unit, and the fourth outlet of the second switching unit is connected to the inlet of the refrigeration throttling element.
[0020] In some embodiments, the refrigeration system further includes:
[0021] The filter has an inlet connected to the outlet of the condenser and an outlet connected to the second inlet of the second switching unit.
[0022] In some embodiments, the first switching unit is a solenoid valve or an electrically operated switching valve; and / or,
[0023] The second switching unit is a solenoid valve or an electrically operated switching valve; and / or,
[0024] The refrigeration throttling element is a capillary tube, a thermal expansion valve, an electronic expansion valve, or a float throttling valve; and / or,
[0025] The refrigeration throttling element is a capillary tube, a thermal expansion valve, an electronic expansion valve, or a float throttling valve.
[0026] In some embodiments, the refrigeration system further includes:
[0027] The return pipe has its inlet connected to the outlet of the refrigeration evaporator and its outlet connected to the inlet of the compressor. The return pipe is in direct contact with the refrigeration throttling element, or the return pipe and the refrigeration throttling element exchange heat through a heat conductor.
[0028] Secondly, embodiments of this application provide a refrigeration device, including the refrigeration system described above.
[0029] The refrigeration system provided in this application embodiment uses multiple parallel-connected refrigeration throttling elements between the condenser and the refrigeration evaporator. The inlets of these multiple refrigeration throttling elements are all connected to the outlets of the condenser, and the outlets of these multiple refrigeration throttling elements are all connected to the inlets of the refrigeration evaporator. Since the refrigerant can selectively enter the refrigeration evaporator through one or more refrigeration throttling elements during the operation of the refrigeration system, when the user needs a lower cooling temperature, the refrigerant can be made to pass through a refrigeration throttling element with a smaller flow rate; when the user needs a faster cooling rate, the refrigerant can be made to pass through a refrigeration throttling element with a larger flow rate, or the refrigerant can pass through multiple parallel refrigeration throttling elements simultaneously to obtain a larger flow rate. This can meet the user's needs to change the cooling rate and achieve a lower cooling temperature in certain scenarios. Attached Figure Description
[0030] 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.
[0031] Figure 1 This is a schematic diagram of a refrigeration system provided in an embodiment of this application.
[0032] Component symbol explanation:
[0033] 100. Refrigeration system; 20. Compressor; 30. Condenser; 41. Refrigeration throttling element; 42. Refrigeration evaporator; 51. First switching unit; 61. Main piping; 71. Refrigeration throttling element; 72. Refrigeration evaporator; 62. Return gas pipe; 52. Second switching unit; 80. Filter. Detailed Implementation
[0034] 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.
[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0036] 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0037] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0039] Please see Figure 1 This application provides a refrigeration system 100, including a compressor 20, a condenser 30, a plurality of refrigeration throttling elements 41, and a refrigeration evaporator 42. The inlet of the condenser 30 is connected to the outlet of the compressor 20. The plurality of refrigeration throttling elements 41 are arranged in parallel, and the inlets of the plurality of refrigeration throttling elements 41 are all connected to the outlet of the condenser 30. The outlets of the plurality of refrigeration throttling elements 41 are all connected to the inlet of the refrigeration evaporator 42, and the outlet of the refrigeration evaporator 42 is connected to the inlet of the compressor 20. During the operation of the refrigeration system 100, refrigerant can selectively enter the refrigeration evaporator 42 via one or more of the refrigeration throttling elements 41.
[0040] In the embodiments of this application, "multiple" refers to two or more, such as three, four, five, six, seven, eight, nine, ten, etc.
[0041] For example, the flow rates of the plurality of cryogenic throttling elements 41 may be the same or different; in some embodiments, at least two of the plurality of cryogenic throttling elements 41 have different flow rates; in other embodiments, the flow rates of the plurality of cryogenic throttling elements 41 are all different.
[0042] For example, the refrigeration throttling element 41 is a capillary tube, a thermostatic expansion valve, an electronic expansion valve, or a float throttling valve.
[0043] The refrigeration system 100 provided in this application embodiment has multiple parallel-connected refrigeration throttling elements 41 between the condenser 30 and the refrigeration evaporator 42. The inlets of the multiple refrigeration throttling elements 41 are all connected to the outlets of the condenser 30, and the outlets of the multiple refrigeration throttling elements 41 are all connected to the inlets of the refrigeration evaporator 42. Since the refrigerant can selectively enter the refrigeration evaporator 42 through one or more refrigeration throttling elements 41 during the operation of the refrigeration system 100, when the user needs a lower cooling temperature, the refrigerant can be made to pass through the refrigeration throttling element 41 with a smaller flow rate; when the user needs a faster cooling rate, the refrigerant can be made to pass through the refrigeration throttling element 41 with a larger flow rate, or the refrigerant can pass through multiple parallel refrigeration throttling elements 41 simultaneously to obtain a larger flow rate. This can meet the user's needs to change the cooling rate and achieve a lower cooling temperature in certain scenarios.
[0044] Please see Figure 1 The refrigeration system 100 also includes a main pipe 61, the outlets of the plurality of refrigeration throttling elements 41 are all connected to the inlet of the main pipe 61, and the outlet of the main pipe 61 is connected to the inlet of the refrigeration evaporator 42.
[0045] It is understandable that by designing the outlets of multiple refrigeration throttling elements 41 to be connected to the inlet of the main pipe 61, and the outlet of the main pipe 61 to be connected to the inlet of the refrigeration evaporator 42, the refrigerant flowing through multiple refrigeration throttling elements 41 converges into a main pipe 61 and enters the refrigeration evaporator 42 through the main pipe 61.
[0046] Please see Figure 1 The refrigeration system 100 further includes a first switching unit 51, which has a first inlet and a plurality of first outlets. The first inlet of the first switching unit 51 is connected to the outlet of the condenser 30, and the inlets of the plurality of refrigeration throttling elements 41 are respectively connected to the plurality of first outlets of the first switching unit 51.
[0047] It is understood that by setting a first switching unit 51 in the refrigeration system 100, and setting multiple first outlets of the first switching unit 51 to be connected to the inlets of multiple refrigeration throttling elements 41 respectively, the first switching unit 51 can be used to selectively control the refrigerant flow through one or more refrigeration throttling elements 41, thereby controlling the refrigerant flow rate and thus controlling the cooling rate and refrigeration temperature of the refrigeration system 100.
[0048] For example, the first switching unit 51 is a solenoid valve or an electric switching valve.
[0049] Please see Figure 1 The refrigeration system 100 further includes a refrigeration throttling element 71 and a refrigeration evaporator 72. The inlet of the refrigeration throttling element 71 is connected to the outlet of the condenser 30; the outlet of the refrigeration throttling element 71 is connected to the inlet of the refrigeration evaporator 72; and the outlet of the refrigeration evaporator 72 is connected to the inlet of the freezer evaporator 42.
[0050] Understandably, in the dual-evaporator refrigeration system 100, the refrigerator evaporator 72 is primarily responsible for cooling the refrigerator compartment, while the freezer evaporator 42 provides cooling to the freezer compartment. By connecting the outlet of the refrigerator evaporator 72 to the inlet of the freezer evaporator 42, the refrigerant circulation path within the refrigeration system 100 is optimized: in addition to the refrigerant throttled by the freezer throttling element 41, the refrigerant flowing out of the refrigerator evaporator 72 also enters the freezer evaporator 42. Since the refrigeration load required by the refrigerator compartment is relatively low, the refrigerant flowing through the refrigerator evaporator 72 retains a certain degree of subcooling after completing the heat absorption process, and its temperature remains at a low level. Introducing this low-temperature refrigerant into the freezer evaporator 42 allows it to continue evaporating and absorbing heat within the freezer evaporator 42, fully releasing its cooling capacity for freezing the freezer compartment. This design fully utilizes the refrigerant's cooling capacity, avoids wasting cooling capacity, reduces unnecessary operating time and energy consumption of the compressor 20, thereby improving the overall energy efficiency of the refrigeration system 100 and reducing system operating power consumption.
[0051] For example, the refrigeration throttling element 71 is a capillary tube, a thermostatic expansion valve, an electronic expansion valve, or a float throttling valve.
[0052] Please see Figure 1 The refrigeration system 100 further includes a second switching unit 52, which has a second inlet, a third outlet and a fourth outlet. The second inlet of the second switching unit 52 is connected to the outlet of the condenser 30, the third outlet of the second switching unit 52 is connected to the first inlet of the first switching unit 51, and the fourth outlet of the second switching unit 52 is connected to the inlet of the refrigeration throttling element 71.
[0053] It is understandable that by setting a second switching unit 52 in the refrigeration system 100, and setting the third outlet and the fourth outlet of the second switching unit 52 to be connected to the first inlet of the first switching unit 51 and the inlet of the refrigeration throttling element 71 respectively, the second switching unit 52 can be used to distribute the refrigerant to two branches. In one branch, the refrigerant flows sequentially through the refrigeration throttling element 41 and the refrigeration evaporator 42 and finally enters the inlet of the compressor 20. In the other branch, the refrigerant flows sequentially through the refrigeration throttling element 71, the refrigeration evaporator 72, and the refrigeration evaporator 42 and finally enters the inlet of the compressor 20.
[0054] For example, the second switching unit 52 is a solenoid valve or an electric switching valve.
[0055] For example, the number of the refrigeration throttling elements 71 can be one or more. When the number of the refrigeration throttling elements 71 is multiple, the multiple refrigeration throttling elements 71 can be arranged in parallel. At this time, the second switching unit 52 can be provided with multiple fourth outlets. The multiple fourth outlets are respectively connected to the inlets of the multiple refrigeration throttling elements 71, and the outlets of the multiple refrigeration throttling elements 71 are all connected to the inlet of the refrigeration evaporator 72.
[0056] For example, the flow rates of the plurality of refrigeration throttling elements 71 may be the same or different; in some embodiments, at least two of the plurality of refrigeration throttling elements 71 have different flow rates; in other embodiments, the flow rates of the plurality of refrigeration throttling elements 71 are all different.
[0057] It is understood that when multiple refrigeration throttling elements 71 are connected in parallel, the cooling speed of the refrigerator compartment can be adjusted more flexibly and a lower temperature can be achieved by adjusting the number of refrigeration throttling elements 71 through which the refrigerant flows and / or selecting refrigeration throttling elements 71 with different flow rates.
[0058] Please see Figure 1 The refrigeration system 100 further includes a filter 80, the inlet of which is connected to the outlet of the condenser 30, and the outlet of which is connected to the second inlet of the second switching unit 52.
[0059] It is understandable that by setting a filter 80 between the condenser 30 and the second switching unit 52, the following functions can be achieved: (1) Filtering impurities: Impurities in the refrigeration system 100 may come from metal shavings, dust left over from the system assembly process, or deposits generated by the refrigerant after long-term use. The filter 80 can prevent these impurities from entering the capillary tube, prevent the capillary tube from becoming blocked, and ensure that the refrigerant can flow smoothly in the system; (2) Drying moisture: A small amount of moisture in the refrigeration system 100 may freeze at low temperatures, block the capillary tube, affect the refrigeration effect, or even cause system failure; The desiccant (such as silica gel, molecular sieve, etc.) in the filter 80 can adsorb the moisture in the refrigerant, keep the refrigerant dry, and avoid the occurrence of ice blockage; (3) Protecting components: By filtering impurities and drying moisture, the filter 80 can protect the capillary tube and other key components in the refrigeration system 100, such as the compressor 20, the refrigeration throttling element 71, and the freezing throttling element 41. By reducing wear and corrosion, the service life of these components can be extended, thereby improving the reliability and stability of the entire refrigeration system 100.
[0060] Please see Figure 1The refrigeration system 100 further includes a return pipe 62, the inlet of which is connected to the outlet of the refrigeration evaporator 42, and the outlet of which is connected to the inlet of the compressor 20. The return pipe 62 is in direct contact with the refrigeration throttling element 71, or the return pipe 62 and the refrigeration throttling element 71 exchange heat through a heat conductor. Exemplarily, the heat conductor is metal, thermally conductive silicone, or thermally conductive rubber.
[0061] It should be noted that designing the return pipe 62 between the refrigeration evaporator 42 and the compressor 20 to directly contact the refrigeration throttling element 71 or to exchange heat through a heat conductor has the following technical effects: (1) Achieving heat exchange: The low-temperature refrigerant vapor in the return pipe 62 can cool the high-pressure refrigerant liquid in the refrigeration throttling element 71, increasing its subcooling. The increase in subcooling means that the refrigerant can absorb more heat in the evaporator, thereby improving the refrigeration efficiency; at the same time, the high-temperature refrigerant liquid in the refrigeration throttling element 71 will also cool the low-temperature refrigerant liquid in the return pipe 62. (1) Preheating the refrigerant vapor to prevent the return gas from being too cold, avoid frost or liquid slugging at the suction port of compressor 20, and protect the normal operation of compressor 20; (2) Improve system energy efficiency: Through the above heat exchange process, the state of the refrigerant in the system is optimized: On the one hand, the overcooled refrigerant evaporates more fully in the evaporator and can extract heat more effectively; on the other hand, the preheated return gas enters compressor 20, which can reduce the compression ratio of compressor 20, reduce the power consumption of compressor 20, and thus improve the energy efficiency ratio of the entire refrigeration system 100 and reduce energy consumption.
[0062] This application also provides a refrigeration device, including the refrigeration system 100 in any of the above embodiments.
[0063] For example, the refrigeration equipment includes refrigerators, freezers, beverage coolers, wine coolers, freezers, ice cream machines, ice makers, etc.
[0064] For example, the refrigeration equipment includes a refrigerator compartment and a freezer compartment. The refrigerator evaporator 72 in the refrigeration system 100 is used to provide the cooling capacity required for the refrigerator compartment, and the freezer evaporator 42 in the refrigeration system 100 is used to provide the cooling capacity required for the freezer compartment.
[0065] For example, the temperature of the refrigerator compartment can be 0℃ to 10℃, such as 0℃, 1℃, 2℃, 3℃, 4℃, 5℃, 6℃, 7℃, 8℃, 9℃, 10℃, etc.
[0066] For example, the temperature of the freezer compartment can be -18℃ to -25℃, such as -18℃, -19℃, -20℃, -21℃, -22℃, -23℃, -24℃, -25℃, etc.
[0067] The refrigeration system and refrigeration equipment 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: compressor; A condenser, the inlet of which is connected to the outlet of the compressor; Multiple refrigeration throttling elements are arranged in parallel, and the inlet of each of the multiple refrigeration throttling elements is connected to the outlet of the condenser; The refrigeration evaporator has multiple outlets of the refrigeration throttling elements connected to the inlet of the refrigeration evaporator, and the outlet of the refrigeration evaporator is connected to the inlet of the compressor; during the operation of the refrigeration system, refrigerant can selectively enter the refrigeration evaporator via one or more of the refrigeration throttling elements.
2. The refrigeration system according to claim 1, characterized in that, At least two of the plurality of refrigeration throttling elements have different flow rates; alternatively, the flow rates of the plurality of refrigeration throttling elements are all different.
3. The refrigeration system according to claim 1, characterized in that, The refrigeration system also includes: The outlets of the main pipeline and the multiple refrigeration throttling elements are all connected to the inlet of the main pipeline, and the outlet of the main pipeline is connected to the inlet of the refrigeration evaporator.
4. The refrigeration system according to claim 1, characterized in that, The refrigeration system also includes: A first switching unit has a first inlet and multiple first outlets. The first inlet of the first switching unit is connected to the outlet of the condenser, and the inlets of the multiple refrigeration throttling elements are respectively connected to the multiple first outlets of the first switching unit.
5. The refrigeration system according to claim 4, characterized in that, The refrigeration system also includes: A refrigeration throttling element, wherein the inlet of the refrigeration throttling element is connected to the outlet of the condenser; A refrigerated evaporator, wherein the outlet of the refrigerated throttling element is connected to the inlet of the refrigerated evaporator, and the outlet of the refrigerated evaporator is connected to the inlet of the refrigerated evaporator.
6. The refrigeration system according to claim 5, characterized in that, The refrigeration system also includes: The second switching unit has a second inlet, a third outlet, and a fourth outlet. The second inlet of the second switching unit is connected to the outlet of the condenser, the third outlet of the second switching unit is connected to the first inlet of the first switching unit, and the fourth outlet of the second switching unit is connected to the inlet of the refrigeration throttling element.
7. The refrigeration system according to claim 6, characterized in that, The refrigeration system also includes: The filter has an inlet connected to the outlet of the condenser and an outlet connected to the second inlet of the second switching unit.
8. The refrigeration system according to claim 6, characterized in that, The first switching unit is a solenoid valve or an electrically operated switching valve; and / or, The second switching unit is a solenoid valve or an electrically operated switching valve; and / or, The refrigeration throttling element is a capillary tube, a thermal expansion valve, an electronic expansion valve, or a float throttling valve; and / or, The refrigeration throttling element is a capillary tube, a thermal expansion valve, an electronic expansion valve, or a float throttling valve.
9. The refrigeration system according to claim 5, characterized in that, The refrigeration system also includes: The return pipe has its inlet connected to the outlet of the refrigeration evaporator and its outlet connected to the inlet of the compressor. The return pipe is in direct contact with the refrigeration throttling element, or the return pipe and the refrigeration throttling element exchange heat through a heat conductor.
10. A refrigeration device, characterized in that, Includes the refrigeration system according to any one of claims 1-9.