Refrigerant circulation system and refrigeration equipment

Abstract

The utility model relates to the technical field of refrigeration equipment, and provides a refrigerant circulation system and the refrigeration equipment, the refrigerant circulation system comprises a compressor, an evaporator, a first pipeline and a variable-temperature air duct, an outlet of the evaporator communicates with an inlet of the compressor, the first pipeline communicates with an outlet of the compressor and an inlet of the evaporator, and the variable-temperature air duct communicates with a variable-temperature chamber; the variable-temperature air duct is suitable for guiding gas exchanging heat with the evaporator to flow into the variable-temperature chamber. The outlet of the compressor is communicated with the inlet of the evaporator through the first pipeline, and a high-temperature refrigerant at the outlet of the compressor is directly conveyed to the evaporator to exchange heat with the variable-temperature air duct, so that the temperature of the variable-temperature chamber is increased, the temperature of the variable-temperature chamber can be increased to a higher temperature, and the requirements of users on various use scenes are met.

Description

Technical Field

[0001] This application belongs to the field of refrigeration equipment technology, and particularly relates to a refrigerant circulation system and refrigeration equipment. Background Technology

[0002] In related technologies, the temperature variation range of the variable compartment of household refrigeration equipment such as refrigerators is limited and the temperature is relatively low, making it impossible to adjust the variable compartment to a higher temperature, thus limiting its application scenarios. Utility Model Content

[0003] This application provides a refrigerant circulation system and refrigeration equipment to solve the problem that the variable temperature compartment of existing refrigeration equipment cannot achieve a high temperature range and has limited application scenarios.

[0004] In a first aspect, embodiments of this application provide a refrigerant circulation system, including:

[0005] compressor;

[0006] An evaporator, the outlet of which is connected to the inlet of the compressor;

[0007] The first pipeline connects the outlet of the compressor and the inlet of the evaporator;

[0008] A variable temperature air duct is connected to a variable temperature chamber and is adapted to guide the gas that has exchanged heat with the evaporator into the variable temperature chamber.

[0009] In some embodiments of this application, the first pipeline is provided with a first solenoid valve, and the refrigerant circulation system further includes a second pipeline, which is connected in parallel with the first pipeline, and the second pipeline is provided with a second solenoid valve and a condenser.

[0010] In some embodiments of this application, the refrigerant circulation system is further provided with a temperature sensor, which is used to detect the current temperature of the variable temperature chamber, and the first solenoid valve is configured to close after the current temperature reaches a preset temperature.

[0011] In some embodiments of this application, the second pipeline is further provided with a drying filter and a capillary tube connected in sequence, and the drying filter is connected to the outlet of the condenser.

[0012] In some embodiments of this application, the second pipeline is further provided with a one-way valve, the inlet of which is connected to the outlet of the capillary tube, and the outlet of which is connected to the inlet of the evaporator.

[0013] In some embodiments of this application, the refrigerant circulation system further includes a refrigerated air duct, which is adapted to guide the gas after heat exchange with the evaporator into the refrigerator compartment. The refrigerated air duct is provided with a refrigerated air damper, which is configured to close when the first solenoid valve is open.

[0014] And / or, the refrigerant circulation system further includes a refrigeration duct adapted to guide gas that has exchanged heat with the evaporator into the refrigeration chamber, the refrigeration duct being provided with a refrigeration damper configured to close when the first solenoid valve is open.

[0015] In some embodiments of this application, there are multiple first pipelines, and these multiple first pipelines are connected in parallel.

[0016] In some embodiments of this application, the variable temperature air duct is equipped with a fan, which drives the gas that has exchanged heat with the evaporator to flow into the variable temperature air duct and blow air into the variable temperature chamber.

[0017] In some embodiments of this application, the diameter of the first pipeline is 4-8 mm.

[0018] Secondly, this application also provides a refrigeration device, which includes a refrigerant circulation system as described in the above embodiments.

[0019] The refrigerant circulation system provided in this application includes a compressor, an evaporator, a first pipeline, and a variable-temperature duct. The outlet of the evaporator is connected to the inlet of the compressor. The first pipeline connects the outlet of the compressor and the inlet of the evaporator. The variable-temperature duct is connected to a variable-temperature chamber and is adapted to guide the gas that has exchanged heat with the evaporator into the variable-temperature chamber. By connecting the outlet of the compressor and the inlet of the evaporator through the first pipeline, the high-temperature refrigerant from the compressor outlet is directly delivered to the evaporator and the variable-temperature duct for heat exchange, thereby raising the temperature of the variable-temperature chamber to a higher level to meet the needs of various user scenarios.

[0020] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0021] 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, and those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0022] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0023] Figure 1 This is a schematic diagram of the refrigerant circulation system provided in an embodiment of this application.

[0024] Figure 2 A schematic diagram of the flow of refrigerant in a first pipeline provided in an embodiment of this application.

[0025] Figure 3 A schematic diagram of the flow of refrigerant in a second pipeline provided in an embodiment of this application.

[0026] Figure 4 This is a schematic diagram of the structure of a refrigeration device provided in an embodiment of this application.

[0027] Figure 5 This is a schematic diagram of the refrigerant circulation system in related technologies.

[0028] Figure label:

[0029] 100. Compressor; 200. Condenser; 300. Dryer filter; 400. Capillary tube; 500. Evaporator; 110. First pipeline; 111. First solenoid valve; 120. Second pipeline; 121. Second solenoid valve; 122. Check valve. Detailed Implementation

[0030] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0031] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0033] In the embodiments of 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.

[0034] 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 the embodiments 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.

[0035] A schematic diagram of the refrigerant circulation system in related technologies is shown below. Figure 5 As shown, the liquid refrigerant absorbs heat from the object being cooled in the evaporator 500 and vaporizes into low-temperature, low-pressure vapor. Then, it is drawn into the compressor 100 through the return pipe and compressed into high-temperature, high-pressure vapor, which is discharged into the condenser. It then releases heat to the air being cooled and condenses into a high-pressure, room-temperature liquid. After being throttled and depressurized by the capillary tube 400, it becomes a low-pressure, low-temperature liquid and re-enters the evaporator 500 to absorb heat from the object being cooled and vaporize, thus achieving the effect of cyclic refrigeration.

[0036] Taking refrigerators as an example, the temperature range of the variable temperature compartment is usually +5 to -30℃, which cannot reach a higher temperature range. When users need to keep cooked food or baby water warm, the existing temperature range of the variable temperature compartment cannot meet the user's needs, affecting the user experience.

[0037] This application provides a refrigerant circulation system and refrigeration equipment to solve the problem that the variable temperature compartment of existing refrigeration equipment cannot achieve a high temperature range and has limited application scenarios. The following will be described in conjunction with the appendix... Figure 1-4 Please provide an explanation.

[0038] According to the refrigerant circulation system of the embodiments of this application, refer to... Figure 1 As shown, the system includes a compressor 100, an evaporator 500, a first pipeline 110, and a variable temperature air duct. The outlet of the evaporator 500 is connected to the inlet of the compressor 100. The first pipeline 110 connects the outlet of the compressor 100 and the inlet of the evaporator 500. The variable temperature air duct (not shown in the figure) is connected to the variable temperature chamber and is adapted to guide the gas after heat exchange with the evaporator 500 into the variable temperature chamber.

[0039] Understandably, during normal refrigeration in the refrigerant circulation system, the outlet temperature of the compressor 100 can generally reach as high as 60°C. By setting a first pipe 110 between the outlet of the compressor 100 and the inlet of the evaporator 500 to transport high-temperature and high-pressure refrigerant gas, the high-temperature and high-pressure gas compressed by the compressor 100 can be directly delivered to the evaporator 500. The evaporator 500 then exchanges heat with the variable temperature air duct, thereby regulating the temperature inside the variable temperature air duct and raising the air temperature inside the duct. At the same time, since the variable temperature air duct is connected to the variable temperature compartment, the temperature inside the variable temperature compartment can be increased, allowing the temperature inside the variable temperature compartment to reach a higher level, thus meeting the user's needs for keeping cooked food warm.

[0040] Meanwhile, the evaporator 500 directly uses the high-temperature and high-pressure refrigerant gas in the refrigeration cycle of the compressor 100 to heat the variable temperature air duct and variable temperature chamber, without the need for additional heating devices and energy consumption, thereby improving the system's energy efficiency ratio and saving energy.

[0041] In one alternative implementation, refer to Figure 1 As shown, the first pipeline 110 is equipped with a first solenoid valve 111, and the refrigerant circulation system also includes a second pipeline 120, which is connected in parallel with the first pipeline 110, and the second pipeline 120 is equipped with a second solenoid valve 121 and a condenser.

[0042] It is understood that in this embodiment, the refrigeration system is also provided with a second pipe 120, which is connected in parallel with the first pipe 110. Both the first pipe 110 and the second pipe 120 are provided with corresponding solenoid valves. By opening and closing the corresponding solenoid valves, the refrigeration function and the heating function of the refrigerant circulation system can be switched to meet the user's refrigeration and heating needs.

[0043] Specifically, a first solenoid valve 111 is installed on the first pipeline 110, and a second solenoid valve 121 is installed on the second pipeline 120. (See reference) Figure 3As shown, when the variable temperature compartment needs cooling, the second solenoid valve 121 opens and the first solenoid valve 111 closes. The compressor 100 compresses the low-temperature, low-pressure refrigerant gas into a high-temperature, high-pressure gas, which then enters the condenser of the second pipeline 120 through the open second solenoid valve 121. The high-temperature, high-pressure refrigerant gas releases heat and condenses into a liquid in the condenser. After being throttled and depressurized, it enters the evaporator 500. In the evaporator 500, the refrigerant liquid absorbs heat from inside the refrigerator and vaporizes. By exchanging heat with the variable temperature air duct, it lowers the temperature inside the variable temperature compartment, achieving a cooling effect.

[0044] refer to Figure 2 As shown, when it is necessary to increase the temperature of the variable temperature chamber, the first solenoid valve 111 opens and the second solenoid valve 121 closes. The compressor 100 compresses the low-temperature, low-pressure refrigerant gas into a high-temperature, high-pressure gas, which then enters the evaporator 500 through the first pipe 110 via the opened first solenoid valve 111. The refrigerant then exchanges heat with the variable temperature air duct in the evaporator 500, transferring heat to the variable temperature chamber and thus increasing its temperature. The refrigerant after heat exchange can then re-enter the compressor 100 for further circulation.

[0045] In an optional embodiment, the refrigerant circulation system is further provided with a temperature sensor (not shown in the figure) for detecting the current temperature of the variable temperature chamber, and the first solenoid valve 111 is configured to close after the current temperature reaches a preset temperature.

[0046] The temperature sensor continuously monitors the temperature of the variable temperature chamber and feeds the detected data back to the system's control unit in real time. The control unit compares the received temperature data with the preset temperature value (the temperature set by the user). When the detected temperature reaches or exceeds the preset temperature, the control unit issues a command to close the first solenoid valve 111, cutting off the flow of refrigerant in the first pipe 110, thereby stopping further heating of the variable temperature chamber.

[0047] Furthermore, after the first solenoid valve 111 is closed, the system can continue to operate to maintain the temperature stability of the variable temperature compartment. For example, if the temperature of the variable temperature compartment is detected to begin to drop and the drop exceeds a certain temperature threshold, the refrigerant circulation system can reopen the first solenoid valve 111 to restore the flow of refrigerant and adjust the temperature of the variable temperature compartment, maintaining the temperature of the variable temperature compartment near the set temperature, thereby achieving precise control of the temperature of the variable temperature compartment.

[0048] In one alternative implementation, refer to Figure 1As shown, the second pipeline 120 is also equipped with a dryer filter 300 and a capillary tube 400 connected in sequence. The dryer filter 300 is connected to the outlet of the condenser, that is, the outlet of the condenser is equipped with a dryer filter 300, and a capillary tube 400 is installed between the dryer filter 300 and the evaporator 500. The high-pressure room-temperature liquid in the condenser is reduced in pressure and becomes a low-pressure low-temperature liquid after being throttled by the capillary tube 400. Then it enters the evaporator 500 to absorb the heat of the object being cooled and vaporizes. Then it returns to the compressor 100 for the next cycle, thereby playing the role of cyclic refrigeration.

[0049] In one alternative implementation, refer to Figure 1 As shown, the second pipeline 120 is also equipped with a one-way valve 122. The inlet of the one-way valve 122 is connected to the outlet of the capillary tube 400, and the outlet of the one-way valve 122 is connected to the inlet of the evaporator 500.

[0050] In this embodiment, by setting a one-way valve 122 between the outlet of the capillary tube 400 and the inlet of the evaporator 500, and with the one-way valve 122 located in the second pipeline 120, when the high-temperature and high-pressure refrigerant gas enters the evaporator 500 through the first pipeline 110 after the first solenoid valve 111 is opened, the refrigerant gas can be prevented from flowing back into the capillary tube 400, thereby reducing refrigerant loss and energy consumption.

[0051] In one optional embodiment, the refrigerant circulation system further includes a refrigeration duct (not shown in the figure), which is used for heat exchange with the evaporator 500 and is connected to the refrigerator compartment. The refrigeration duct is adapted to guide the gas after heat exchange with the evaporator 500 into the refrigerator compartment. The refrigeration duct is provided with a refrigeration damper, which is configured to close when the first solenoid valve 111 is open. In another optional embodiment, the refrigerant circulation system further includes a freezing duct (not shown in the figure), which is used for heat exchange with the evaporator 500 and is connected to the freezer compartment. The freezing duct is adapted to guide the gas after heat exchange with the evaporator 500 into the freezer compartment. The freezing duct is provided with a freezing damper, which is configured to close when the first solenoid valve 111 is open.

[0052] It is understandable that, in addition to the variable temperature compartment, the refrigeration equipment may also include a refrigerator compartment and a freezer compartment. To avoid affecting the temperature of the refrigerator compartment and freezer compartment when the variable temperature compartment is heated, a refrigerator damper can be installed in the refrigerator air duct and a freezer damper can be installed in the freezer air duct. When the first solenoid valve 111 is open and the refrigerant circulation system is heating the variable temperature compartment, the refrigerator damper and freezer damper are controlled to be closed. This prevents the high-temperature and high-pressure refrigerant gas from the compressor 100 outlet from flowing into the evaporator 500 through the first pipe 110 and exchanging heat with the refrigerator air duct and freezer air duct, thereby affecting the temperature of the refrigerator compartment and freezer compartment. This ensures that the temperature of the refrigerator compartment and freezer compartment remains stable, reduces unnecessary energy consumption, and avoids temperature fluctuations and energy waste.

[0053] In one optional embodiment, there are multiple first pipes 110, which are connected in parallel. Each first pipe 110 can be equipped with a corresponding first solenoid valve 111 to control the opening or closing of that first pipe 110. Multiple first pipes 110 can improve the cooling efficiency of the variable temperature compartment. By independently controlling the solenoid valve on each first pipe 110, the system can flexibly adjust the heating capacity according to actual needs to achieve more precise temperature control. Even when some first pipes 110 fail, the system can continue to heat the variable temperature compartment, improving the stability and reliability of the refrigerant circulation system.

[0054] In an optional embodiment, the variable temperature duct is provided with a fan (not shown in the figure) for driving the gas that has exchanged heat with the evaporator 500 into the variable temperature duct and blowing air into the variable temperature chamber.

[0055] In this embodiment, both cooling and heating of the variable temperature chamber can be achieved through heat exchange between the evaporator 500 and the variable temperature air duct. By setting up a fan, the fan can be turned on when cooling or heating the variable temperature chamber, which improves the cooling and heating efficiency of the system and helps to distribute hot or cold air evenly in the variable temperature chamber, ensuring that the temperature of the variable temperature chamber is uniform.

[0056] In one optional embodiment, the diameter of the first conduit 110 is 4-8 mm. Optionally, the diameter of the first conduit 110 can be 4 mm, 5 mm, 6 mm, 7 mm, or 8 mm, etc., and this embodiment does not specifically limit it.

[0057] The refrigerant circulation system provided in this application embodiment includes a compressor 100, an evaporator 500, a first pipe 110, and a variable-temperature duct. The outlet of the evaporator 500 is connected to the inlet of the compressor 100. The first pipe 110 connects the outlet of the compressor 100 and the inlet of the evaporator 500. The variable-temperature duct is used for heat exchange with the evaporator 500 and is connected to the variable-temperature compartment. By connecting the outlet of the compressor 100 and the inlet of the evaporator 500 through the first pipe 110, the high-temperature refrigerant from the outlet of the compressor 100 is directly delivered to the evaporator 500 for heat exchange with the variable-temperature duct, thereby raising the temperature of the variable-temperature compartment to a higher level to meet the needs of various user scenarios.

[0058] Secondly, this application also provides a refrigeration device, which includes a refrigerant circulation system as described in the above embodiments.

[0059] For example, such as Figure 4 As shown, the refrigeration equipment can be household appliances such as refrigerators and freezers, but this embodiment does not specifically limit it.

[0060] It is understood that since the refrigerant circulation system has the beneficial effects of the above embodiments, the refrigeration equipment will have the corresponding beneficial effects of the above embodiments. The specific implementation methods can be referred to the above embodiments, and will not be repeated in this embodiment.

[0061] 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.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate this application and are not intended to limit this application. Although this application has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of this application do not depart from the spirit and scope of the technical solutions of this application and should all be covered within the protection scope of this application.

Claims

1. A refrigerant circulation system, characterized in that, include: Compressor (100); An evaporator (500) is provided, the outlet of which is connected to the inlet of the compressor (100); The first pipeline (110) connects the outlet of the compressor (100) and the inlet of the evaporator (500); A variable temperature air duct is connected to a variable temperature chamber and is adapted to guide the gas that has exchanged heat with the evaporator (500) into the variable temperature chamber.

2. The refrigerant circulation system according to claim 1, characterized in that, The first pipeline (110) is equipped with a first solenoid valve (111), and the refrigerant circulation system further includes a second pipeline (120), which is connected in parallel with the first pipeline (110), and the second pipeline (120) is equipped with a second solenoid valve (121) and a condenser.

3. The refrigerant circulation system according to claim 2, characterized in that, The refrigerant circulation system is also equipped with a temperature sensor, which is used to detect the current temperature of the variable temperature chamber, and the first solenoid valve (111) is configured to close after the current temperature reaches a preset temperature.

4. The refrigerant circulation system according to claim 2, characterized in that, The second pipeline (120) is also provided with a dryer filter (300) and a capillary tube (400) connected in sequence, wherein the dryer filter (300) is connected to the outlet of the condenser.

5. The refrigerant circulation system according to claim 4, characterized in that, The second pipeline (120) is also provided with a one-way valve (122), the inlet of which is connected to the outlet of the capillary tube (400), and the outlet of which is connected to the inlet of the evaporator (500).

6. The refrigerant circulation system according to claim 2, characterized in that, The refrigerant circulation system also includes a refrigerated air duct, which is adapted to guide the gas after heat exchange with the evaporator (500) into the refrigerated compartment. The refrigerated air duct is provided with a refrigerated air damper, which is configured to close when the first solenoid valve (111) is open. And / or, the refrigerant circulation system further includes a refrigeration duct adapted to guide gas that has exchanged heat with the evaporator (500) into the refrigeration chamber, the refrigeration duct being provided with a refrigeration damper configured to close when the first solenoid valve (111) is open.

7. The refrigerant circulation system according to claim 1, characterized in that, There are multiple first pipelines (110), and the multiple first pipelines (110) are connected in parallel.

8. The refrigerant circulation system according to claim 1, characterized in that, The variable temperature air duct is equipped with a fan, which drives the gas that has exchanged heat with the evaporator (500) to flow into the variable temperature air duct and blow air into the variable temperature chamber.

9. The refrigerant circulation system according to any one of claims 1-8, characterized in that, The diameter of the first pipe (110) is 4-8 mm.

10. A refrigeration device, characterized in that, The refrigeration equipment includes the refrigerant circulation system as described in any one of claims 1-9.

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