Refrigeration equipment and regulation methods

Abstract

This application discloses a refrigeration device and a regulating method. A liquid storage device is used to store or discharge a cooling medium. A detection device is used to detect the state information of the cooling medium in the refrigeration device, and discharge the cooling medium from the liquid storage device or discharge the cooling medium from the refrigeration device to the liquid storage device according to the state information. In the refrigeration device and regulating method of this application, since the detection device can detect the state information of the cooling medium in the refrigeration device to know the subcooling degree of the cooling medium, it can determine whether there is a lack of cooling medium in the refrigeration device. When there is a lack of cooling medium in the refrigeration device, i.e., the cooling medium is subcooled, cooling medium is discharged from the liquid storage device to replenish it. When there is no lack of cooling medium in the refrigeration device, excess cooling medium can be discharged from the refrigeration device to the liquid storage device, thereby ensuring that the refrigeration device is in optimal operating condition.

Description

Technical Field

[0001] This application relates to the field of refrigeration technology, and more specifically, to a refrigeration device and a regulating method. Background Technology

[0002] Currently, conventional air source heat pump units require different amounts of refrigerant for cooling and heating operation. Generally, a larger amount of refrigerant is needed for cooling operation and a smaller amount for heating operation. Since the refrigerant charge in the system is a fixed value, a liquid receiver is needed to store the excess refrigerant during heating.

[0003] However, since conventional receivers are usually located on the high-pressure side, when the unit is running in cooling mode, the receiver typically only stores about 20% of the refrigerant. This causes the subcooled refrigerant coming down from the air-side condenser to exchange heat with the saturated refrigerant in the receiver, resulting in an increase in the economizer outlet temperature, a reduction in the subcooling before throttling, and a loss of cooling capacity and performance of the unit. Summary of the Invention

[0004] This application provides a refrigeration device and a regulating method.

[0005] The refrigeration device provided in this application includes a liquid storage device and a detection device. The liquid storage device is used to store or discharge a cooling medium. The device detects the state information of the cooling medium in the refrigeration device and discharges the cooling medium from the liquid storage device or discharges the cooling medium from the refrigeration device into the liquid storage device according to the state information.

[0006] The adjustment method provided in this application includes detecting the state information of the cooling medium in the refrigeration equipment; and discharging the cooling medium from the liquid storage device of the refrigeration equipment or discharging the cooling medium from the refrigeration equipment to the liquid storage device according to the state information.

[0007] In the refrigeration equipment and regulation method of this application, since the detection device can detect the state information of the cooling medium in the refrigeration equipment to know the subcooling degree of the cooling medium in the refrigeration equipment, it can determine whether there is a lack of cooling medium in the refrigeration equipment. When there is a lack of cooling medium in the refrigeration equipment, that is, when the cooling medium is subcooled, the cooling medium is discharged from the liquid storage device to replenish it. When there is no lack of cooling medium in the refrigeration equipment, the excess cooling medium can be discharged from the refrigeration equipment to the liquid storage device, thereby ensuring that the refrigeration equipment is in the optimal operating state.

[0008] Additional aspects and advantages of embodiments 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 embodiments of this application. Attached Figure Description

[0009] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0010] Figure 1 This is a schematic diagram of the structure of the refrigeration device in some embodiments of this application;

[0011] Figure 2 yes Figure 1 The diagram shows the structure of the liquid storage device in the refrigeration equipment.

[0012] Figure 3 This is a schematic diagram of the structure of the refrigeration equipment in the embodiments of this application;

[0013] Figure 4 This is a schematic diagram of the structure of the refrigeration equipment in the embodiments of this application;

[0014] Figure 5 yes Figure 4 The diagram shows the structure of the four-way valve in the refrigeration equipment shown.

[0015] Figure 6 This is a flowchart illustrating the adjustment method in some embodiments of this application;

[0016] Figure 7 This is a flowchart illustrating the adjustment method in some embodiments of this application.

[0017] Description of main component symbols:

[0018] Refrigeration equipment 100; liquid storage device 10, cylinder 11, air outlet 101, liquid storage pipeline 12, liquid discharge pipeline 13, liquid level switch 14; detection device 20; compressor 30, first air intake port 31, first air exhaust port 32, air supply port 33; first heat exchanger 40; economizer 50, first air port 51, second air port 52, third air port 53, fourth air port 54; second heat exchanger 60, second air intake port 61, second air exhaust port 62; first solenoid valve 71, second solenoid valve 72, third solenoid valve 73; First electronic expansion valve 81, second electronic expansion valve 82; separator 90; four-way valve 110, first opening 111, second opening 112, third opening 113, fourth opening 114; first dryer filter 120; second dryer filter 130; ball valve 140; first check valve 151, second check valve 152, third check valve 153, fourth check valve 154, fifth check valve 155, sixth check valve 156; first orifice plate 160; second orifice plate 170. Detailed Implementation

[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of this application, and should not be construed as limiting the embodiments of this application.

[0020] In the description of the embodiments of this application, it is worth mentioning that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are 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. Features defined with "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0021] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" 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, an electrical connection, or a connection that allows for communication; 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0022] In embodiments of this application, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] The following disclosure provides numerous different embodiments or examples for implementing various structures of the embodiments of this application. To simplify the disclosure of the embodiments of this application, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Reference numerals and / or reference letters may be repeated in different examples of the embodiments of this application; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. Examples of various specific processes and materials are provided in the embodiments of this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0024] Please see Figure 1 and Figure 2 The refrigeration device 100 provided in this application includes a liquid storage device 10 and a detection device 20. The liquid storage device 10 is used to store or discharge cooling medium. The detection device 20 is used to detect the state information of the cooling medium in the refrigeration device 100, and discharge the cooling medium from the liquid storage device 10 or discharge the cooling medium from the refrigeration device 100 to the liquid storage device 10 according to the state information.

[0025] In the refrigeration equipment 100 of this application, since the detection device 20 can detect the state information of the cooling medium in the refrigeration equipment 100 and know the subcooling degree of the cooling medium in the refrigeration equipment 100, it can determine whether the refrigeration equipment 100 is lacking in cooling medium. When the refrigeration equipment 100 is lacking in cooling medium, that is, when the cooling medium is subcooled, the cooling medium is discharged from the liquid storage device 10 to replenish it. When the refrigeration equipment 100 is not lacking in cooling medium, the excess cooling medium can be discharged from the refrigeration equipment 100 to the liquid storage device 10, thereby ensuring that the refrigeration equipment 100 is in the optimal operating state.

[0026] The present application will now be described in further detail with reference to the accompanying drawings.

[0027] Please see Figure 1 The refrigeration equipment 100 includes a liquid storage device 10 and a detection device 20. The liquid storage device 10 is used to store or discharge cooling medium. The detection device 20 is used to detect the state information of the cooling medium in the refrigeration equipment 100, and discharge cooling medium from the liquid storage device 10 or discharge cooling medium from the refrigeration equipment 100 to the liquid storage device 10 according to the state information.

[0028] Please combine Figure 2 The liquid storage device 10 includes a cylinder 11, a liquid storage line 12, a liquid drain line 13, and a level switch 14. The liquid storage line 12, the liquid drain line 13, and the level switch 14 are all at least partially located inside the cylinder 11. It can be understood that at least a portion of the liquid storage line 12, the liquid drain line 13, and the level switch 14 are located outside the cylinder 11.

[0029] The cylinder 11 is used to store the cooling medium. It can be understood that the cooling medium in the piping of the refrigeration equipment 100 can be discharged to the oil collection tank 102 of the cylinder 11 through the liquid storage pipe 12; the cooling medium stored in the cylinder 11 can also be discharged into the piping of the refrigeration equipment 100 through the drain pipe 13 to replenish the cooling medium of the refrigeration equipment 100. In this way, the cooling medium in the refrigeration equipment 100 can be kept within the optimal subcooling range, thereby ensuring that the refrigeration equipment 100 can operate in its optimal state and guarantee its performance.

[0030] The cylinder 11 has an air outlet 101 that extends away from the cylinder 11. The air outlet 101 is connected to the compressor 30 of the refrigeration equipment 100, thereby enabling the compressor 30 to absorb the gaseous cooling medium inside the liquid storage device 10, change the pressure inside the liquid storage device 10, and replenish the cooling medium inside the compressor 30.

[0031] The liquid storage pipeline 12 includes two opposite ends, one end of which extends into the cylinder 11 and is located in the oil collection tank of the cylinder 11, and the other end extends out of the cylinder 11 and is connected to the pipeline of the refrigeration equipment 100, so as to store the cooling medium in the refrigeration equipment 100 into the cylinder 11.

[0032] Similarly, the drain pipe 13 includes two opposing ends, one end of which extends into the cylinder 11 and the other end extends out of the cylinder 11 and is connected to the piping of the refrigeration equipment 100, so as to discharge the cooling medium inside the cylinder 11 to the refrigeration equipment 100. It should be noted that the connection position between the liquid storage pipe 12 and the refrigeration equipment 100 is different from the connection position between the drain pipe 13 and the refrigeration equipment 100.

[0033] The level switch 14 also includes a corresponding light source, one end of which extends into the cylinder 11 and the other end extends out of the cylinder 11. The level switch 14 can be used to detect the volume of the cooling medium inside the cylinder 11.

[0034] Specifically, the liquid level switch 14 can obtain the height of the cooling medium inside the cylinder 11 by extending one end into the cylinder 11, thereby determining the capacity of the cooling medium inside the cylinder 11. When the capacity of the cooling medium inside the cylinder 11 reaches a predetermined height, the passage between the liquid storage device 10 and the compressor 30 of the refrigeration equipment 100 is blocked, which can prevent the liquid cooling medium from being sucked into the compressor 30 and avoid the problem of wet compression.

[0035] Please continue reading. Figure 1 The refrigeration equipment 100 may include a compressor 30, a first heat exchanger 40, an economizer 50, and a second heat exchanger 60.

[0036] The compressor 30 is used to compress the cooling medium. The compressor 30 includes a first intake port 31, a first exhaust port 32, and a make-up port 33. The first intake port 31 is connected to the second heat exchanger 60, and the first exhaust port 32 is connected to the first heat exchanger 40. The make-up port 33 is connected to the economizer 50.

[0037] The first air intake port 31 is used to collect the cooling medium after it has undergone heat exchange through the first heat exchanger 40 or the second heat exchanger 60, so as to circulate and compress the cooling medium. The first exhaust port 32 is used to discharge the compressed cooling medium to the first heat exchanger 40 or the second heat exchanger 60. The air supply port 33 is used to receive the gaseous cooling medium after it has been subcooled and evaporated by the economizer 50.

[0038] The first heat exchanger 40 is used to receive the cooling medium discharged through the first exhaust port 32 and to exchange heat with the external environment. For example, when the refrigeration equipment 100 is in cooling mode, the first heat exchanger 40 can act as a condenser to release the heat of the cooling medium into the environment. As another example, when the refrigeration equipment 100 is in heating mode, the first heat exchanger 40 can act as an evaporator to absorb heat from the environment, thereby exchanging heat with the cooling medium.

[0039] Economizer 50 is used to subcool the cooling medium. Detection device 20 is located between economizer 50 and the first heat exchanger 40. It is used to detect the state information (pressure and temperature) of the cooling medium before it enters economizer 50, thereby calculating the current subcooling degree of the cooling medium. Based on the subcooling degree, it determines whether the refrigeration equipment lacks cooling medium or has excess cooling medium, thus determining whether the liquid storage device 10 should discharge or store cooling medium.

[0040] The second heat exchanger 60 contains pipes that store water. The second heat exchanger 60 can condense or evaporate the cooling medium to achieve heat exchange with water, thereby cooling or heating the water, that is, realizing the cooling or heating function of the refrigeration equipment 100.

[0041] The second heat exchanger 60 includes a second air intake port 61 and a second exhaust port 62. The second air intake port 61 is connected to the economizer 50 and is used to receive the cooling medium after it has been subcooled by the economizer 50, or to discharge the cooling medium to the economizer 50. The second exhaust port 62 is connected to the first air intake port 31 and is used to discharge the cooling medium that has undergone heat exchange with water to the first air intake port 31, or to receive the cooling medium after it has been compressed by the compressor 30.

[0042] The liquid storage line 12 connects the first heat exchanger 40 and the second heat exchanger 60 to store the cooling medium discharged from the first heat exchanger 40 or the second heat exchanger 60. The drain line 13 connects the economizer 50 and the second heat exchanger 60 to further replenish the cooling medium after passing through the economizer 50.

[0043] The working process of the refrigeration equipment 100 is explained in further detail below:

[0044] When the refrigeration equipment 100 is in refrigeration mode, the first heat exchanger 40 acts as a condenser to release the heat of the cooling medium, and the second heat exchanger 60 acts as an evaporator to evaporate the cooling medium entering the second heat exchanger 60, thereby cooling the water.

[0045] Specifically, please refer to Figure 1 , Figure 1 The flow direction of the cooling medium in the cooling mode is indicated. After the compressor 30 compresses the cooling medium, it is first discharged into the first heat exchanger 40 through the first exhaust port 32 to release heat, then subcooled by the economizer 50, and then enters the second heat exchanger 60 through the second air intake port 61 to evaporate and absorb heat, thereby cooling the water. Finally, the cooling medium is discharged into the compressor 30 through the second exhaust port 62 and the first air intake port 31 for compression, thus realizing the circulation of the cooling medium.

[0046] When the refrigeration equipment 100 is in heating mode, the first heat exchanger 40 acts as an evaporator to absorb heat, and the second heat exchanger 60 acts as a condenser to condense the cooling medium, thereby heating the water.

[0047] Specifically, please refer to Figure 3 , Figure 3 The flow direction of the cooling medium in heating mode is indicated. After the compressor 30 compresses the cooling medium, it is first discharged into the second heat exchanger 60 through the first exhaust port 32 and the second exhaust port 62 for condensation, thereby heating the water. Then, it enters the economizer 50 through the second air intake port 61 for subcooling, then enters the first heat exchanger 40 to absorb heat, and finally enters the compressor 30 through the first air intake port 31 for compression, thus circulating the cooling medium.

[0048] Among them, when the refrigeration equipment 100 is in heating mode, there is also a defrosting mode. When the refrigeration equipment 100 is in defrosting mode, it means that the frost layer on the first heat exchanger 40 needs to be melted first. At this time, the first heat exchanger 40 acts as a condenser, and the second heat exchanger 60 acts as an evaporator.

[0049] Specifically, please refer to Figure 4 , Figure 4The flow direction of the cooling medium in defrosting mode is indicated. After the compressor 30 compresses the cooling medium, it first enters the first heat exchanger 40 through the first exhaust port 32 for cooling and condensation to melt the frost layer on the first heat exchanger 40. The condensed cooling medium then enters the economizer 50 for subcooling, and then enters the second heat exchanger 60 through the second air intake port 61 for evaporation to heat the water. Finally, it enters the compressor 30 through the second exhaust port 62 and the first air intake port 31 for compression, thus realizing the circulation of the cooling medium.

[0050] Please also refer to Figures 1 to 4 The refrigeration equipment 100 also includes a first solenoid valve 71, a second solenoid valve 72, and a third solenoid valve 73. The first solenoid valve 71, the second solenoid valve 72, and the third solenoid valve 73 are located at different positions in the refrigeration equipment 100.

[0051] Specifically, the first solenoid valve 71 is connected to the first heat exchanger 40, the liquid storage pipeline 12, and the second air inlet 61. It controls whether the cooling medium discharged from the first heat exchanger 40 can flow to the liquid storage pipeline 12 and finally enter the liquid storage device 10, and controls whether the cooling medium discharged from the second air inlet 61 can flow to the liquid storage pipeline 12 and finally enter the liquid storage device 10.

[0052] The second solenoid valve 72 is connected to the drain pipe 13 and the second air inlet 61. It controls whether the liquid storage device 10 can converge with the cooling medium after it has been subcooled by the economizer 50 and finally enter the second heat exchanger 60. It also controls whether the cooling medium discharged from the drain pipe 13 can converge with the cooling medium discharged from the second heat exchanger 60.

[0053] The third solenoid valve 73 connects the air outlet 101 of the cylinder 11 and the first air inlet 31 to control whether the compressor 30 can draw in the gaseous cooling medium inside the liquid storage device 10 and finally enter the compressor 30.

[0054] Specifically, the refrigeration equipment 100 includes a refrigeration mode, a heating mode, a defrosting mode, and a stop state.

[0055] Please see Figure 1 When the refrigeration equipment 100 is in refrigeration mode, the detection device 20 can detect the subcooling of the cooling medium before it enters the economizer 50, i.e., the status information (the subcooling is determined by pressure and temperature), and if the status information is less than or equal to a first preset threshold, it is determined that the refrigeration equipment 100 lacks cooling medium.

[0056] Thus, the refrigeration equipment 100 can replenish the cooling medium by opening the second solenoid valve 72, allowing the liquid storage device 10 to discharge the cooling medium through the drain pipe 13 and mix it with the cooling medium subcooled by the economizer 50. The refrigeration equipment 100 can also replenish the cooling medium by opening the third solenoid valve 73, allowing the compressor 30 to draw in the cooling medium from inside the liquid storage device 10 through the outlet 101 and the first inlet 31. Furthermore, the refrigeration equipment 100 can simultaneously open the second solenoid valve 72 and the third solenoid valve 73, allowing the liquid storage device 10 to replenish the cooling medium simultaneously through the drain pipe 13 and the outlet 101, thereby ensuring that the refrigeration equipment 100 is in optimal operating condition.

[0057] Preferably, when the refrigeration device 100 is in refrigeration mode and the status information is less than or equal to the first preset threshold, such as when the subcooling degree is less than the preset temperature, such as less than or equal to 5°C, the refrigeration device 100 can first open the second solenoid valve 72 to replenish the cooling medium of the refrigeration device 100 through the drain device, and continuously detect whether the status information is less than or equal to the first preset threshold. If the status information is still less than or equal to the first preset threshold after running for a period of time (such as after 10 minutes), the refrigeration device 100 can then open the third solenoid valve 73 so that the compressor 30 can draw the gaseous cooling medium in the liquid storage device 10 into the compressor 30 through the outlet 101 and the first inlet 31 to further replenish the cooling medium.

[0058] When the refrigeration equipment 100 is in refrigeration mode, if the detection device 20 detects that the status information is greater than the second preset threshold, such as greater than 6°C, it can be determined that the refrigeration equipment 100 has excess cooling medium.

[0059] In this way, the refrigeration equipment 100 can open the first solenoid valve 71, allowing part of the cooling medium discharged from the first heat exchanger 40 to enter the cylinder 11 through the liquid storage pipe 12, thereby discharging the excess cooling medium in the refrigeration equipment 100 into the liquid storage device 10, thus ensuring that the refrigeration equipment 100 is in the best operating condition.

[0060] Please see Figure 3 When the refrigeration equipment 100 is in heating mode, the detection device 20 can detect the subcooling of the cooling medium before it enters the economizer 50, i.e., the status information (the subcooling is determined by pressure and temperature), and if the status information is less than or equal to the third preset threshold, it is determined that the refrigeration equipment 100 lacks cooling medium.

[0061] Thus, the refrigeration equipment 100 can open the second solenoid valve 72, allowing the liquid storage device 10 to discharge the cooling medium through the drain pipe 13, which then mixes with the cooling medium discharged from the second heat exchanger 60 to replenish the cooling medium. The refrigeration equipment 100 can also open the third solenoid valve 73, allowing the compressor 30 to draw in the cooling medium from inside the liquid storage device 10 through the outlet 101 and the first inlet 31 to replenish the cooling medium. Furthermore, the refrigeration equipment 100 can simultaneously open both the second and third solenoid valves 72 and 73, allowing the liquid storage device 10 to replenish the cooling medium simultaneously through the drain pipe 13 and the outlet 101, thereby ensuring that the refrigeration equipment 100 is in optimal operating condition.

[0062] Preferably, when the refrigeration equipment 100 is in heating mode and the status information is less than or equal to the third preset threshold, such as when the subcooling degree is less than the preset temperature, such as less than or equal to 3°C, the refrigeration equipment 100 can first open the second solenoid valve 72 to replenish the cooling medium of the refrigeration equipment 100 through the drain device, and continuously detect whether the status information is less than or equal to the third preset threshold. If the status information is still less than or equal to the third preset threshold after running for a period of time (such as after 10 minutes), the refrigeration equipment 100 can then open the third solenoid valve 73, so that the compressor 30 can draw the gaseous cooling medium in the liquid storage device 10 into the compressor 30 through the outlet 101 and the first inlet 31 to further replenish the cooling medium.

[0063] When the refrigeration equipment 100 is in heating mode, if the detection device 20 detects that the status information is greater than the fourth preset threshold, such as greater than 4°C, it can be determined that the refrigeration equipment 100 has excess cooling medium.

[0064] In this way, the refrigeration equipment 100 can open the first solenoid valve 71 so that part of the cooling medium discharged from the second heat exchanger 60 can enter the cylinder 11 through the liquid storage pipe 12, thereby discharging the excess cooling medium in the refrigeration equipment 100 into the liquid storage device 10, thus ensuring that the refrigeration equipment 100 is in the best operating condition.

[0065] Please see Figure 3 When the refrigeration equipment 100 is in defrosting mode, the detection device 20 can detect the pressure of the cooling medium before it enters the economizer 50, i.e., the status information. If the status information is greater than or equal to the fifth preset threshold, it determines that there is too much cooling medium in the first heat exchanger 40 and that drainage is required.

[0066] The refrigeration equipment 100 can open the first solenoid valve 71, allowing the liquid storage device 10 to discharge excess cooling medium into the liquid storage device 10 through the liquid storage pipeline 12. The refrigeration equipment 100 can also open the third solenoid valve 73, allowing the compressor 30 to absorb gaseous cooling medium from the liquid storage device 10 into the compressor 30 through the first intake port 31 and the exhaust port 101, so that the liquid storage device 10 can store more liquid cooling medium.

[0067] Preferably, when the refrigeration equipment 100 is in defrost mode and the status information is greater than or equal to a fifth preset threshold (e.g., pressure is greater than or equal to a preset pressure), the refrigeration equipment 100 simultaneously opens the first solenoid valve 71 and the third solenoid valve 73. This allows the liquid storage device 10 to pass through the liquid storage pipe 12 and the air outlet 101, simultaneously discharging excess cooling medium from the first heat exchanger 40 into the liquid storage device 10. This prevents excess liquid cooling medium inside the first heat exchanger 40 from entering the compressor 30 through the first air inlet 31 after the defrost mode ends and the system switches to heating mode, thus preventing liquid slugging and ensuring the stability of the refrigeration equipment 100. The first, second, third, fourth, and fifth preset thresholds are different.

[0068] Furthermore, when the refrigeration equipment 100 is in defrosting mode, if the liquid level switch 14 detects that the capacity of the cooling medium in the liquid storage device 10 has reached the predetermined capacity, the refrigeration equipment 100 needs to close the third solenoid valve 73 to prevent the compressor 30 from drawing in liquid cooling medium through the first air intake port 31 and the air outlet 101, causing wet compression, thereby ensuring the stability of the refrigeration equipment 100.

[0069] When the refrigeration equipment 100 is in a stopped state, the refrigeration equipment 100 can open the first solenoid valve 71 to collect the cooling medium in the refrigeration equipment 100 into the liquid storage device 10. The refrigeration equipment 100 can also open the third solenoid valve 73 to collect the gaseous cooling medium in the liquid storage device 10 into the compressor 30. The refrigeration equipment 100 can also open the first solenoid valve 71 and the third solenoid valve 73 at the same time to collect the gaseous cooling medium in the refrigeration equipment 100 into the compressor 30 and collect the liquid cooling medium into the liquid storage device 10. This completes the centralized collection of the cooling medium when the refrigeration equipment 100 is stopped, thereby preventing the cooling medium from causing the first heat exchanger 40 and the second heat exchanger 60 to freeze, and ensuring the stability of the refrigeration equipment 100.

[0070] Furthermore, when the refrigeration equipment 100 is in a stopped state, if the level switch 14 detects that the capacity of the cooling medium in the liquid storage device 10 has reached the predetermined capacity, the refrigeration equipment 100 needs to close the third solenoid valve 73 to prevent the liquid cooling medium in the liquid storage device 10 from entering the compressor 30, causing the internal pressure of the liquid storage device 10 to be low, resulting in a low pressure alarm when the refrigeration equipment 100 is working, thereby ensuring the stability of the refrigeration equipment 100.

[0071] Please also refer to Figures 1 to 4 The refrigeration equipment 100 also includes a first electronic expansion valve 81 and a second electronic expansion valve 82.

[0072] Specifically, the economizer 50 includes a first air inlet 51, a second air inlet 52, a third air inlet 53, and a fourth air inlet 54.

[0073] The first air inlet 51 is connected to the first heat exchanger 40 and the second air outlet 61. In cooling mode, the first air inlet 51 is used to receive the cooling medium discharged from the first heat exchanger 40; in heating mode, the first air inlet 51 is used to receive the cooling medium discharged from the second heat exchanger 60.

[0074] The second gas port 52 is connected to the gas supply port 33 of the compressor 30. The first electronic expansion valve 81 is connected to the third gas port 53 and the fourth gas port 54. The second electronic expansion valve 82 connects the fourth gas port 54, the second gas receiving port 61, and the first heat exchanger 40. In cooling mode, the cooling medium is subcooled by the economizer 50 and then discharged through the fourth gas port 54 and the second electronic expansion valve 82 into the second gas receiving port 61 to enter the second heat exchanger 60. In heating mode, the cooling medium is subcooled by the economizer 50 and then discharged through the fourth gas port 54 and the second electronic expansion valve 82 into the first heat exchanger 40.

[0075] More specifically, after the cooling medium enters the economizer 50 through the first port 51 and is subcooled, a portion of the subcooled cooling medium can enter the first electronic expansion valve 81 through the third port 53, and then re-enter the economizer 50 through the fourth port 54 for evaporation and heat absorption. The completely evaporated cooling medium then enters the compressor 30's make-up port 33 through the second port 52. Additionally, the majority of the subcooled cooling medium can be discharged through the fourth port 54 into the second electronic expansion valve 82 for pressure reduction and throttling.

[0076] In cooling mode, the cooling medium after pressure reduction and throttling can enter the second heat exchanger 60 through the second air intake port 61 to evaporate, thereby cooling the water. Finally, the completely evaporated cooling medium enters the compressor 30 through the first air intake port 31 for compression, completing the refrigeration cycle.

[0077] In heating mode, the depressurized and throttled cooling medium can be discharged into the first heat exchanger 40 for evaporation and heat absorption, so as to dissipate the cooling energy into the environment. Finally, the completely evaporated cooling medium enters the compressor 30 through the first air intake port 31 for compression to complete the heating cycle.

[0078] In defrost mode, the depressurized and throttled cooling medium can be discharged into the second heat exchanger 60 for evaporation and heat absorption. Finally, the completely evaporated cooling medium enters the compressor 30 through the first air intake port 31 for compression to complete the defrost cycle.

[0079] Please also refer to Figures 1 to 5 The refrigeration equipment 100 may also include a separator 90, a four-way valve 110, a first dryer filter 120, a second dryer filter 130, a ball valve 140, a first one-way valve 151, a second one-way valve 152, a third one-way valve 153, a fourth one-way valve 154, a fifth one-way valve 155 and a sixth one-way valve 156, a first orifice plate 160 and a second orifice plate 170.

[0080] The separator 90 is located between the compressor 30 and the four-way valve 110 and is used to separate the cooling medium discharged through the first exhaust port 32 in order to filter the lubricating oil contained in the gaseous cooling medium.

[0081] The four-way valve 110 includes a first opening 111, a second opening 112, a third opening 113, and a fourth opening 114 that are interconnected. The four-way valve 110 can change the flow direction of the cooling medium by being energized or de-energized.

[0082] Specifically, the first opening 111 is connected to the separator 90, the second opening 112 is connected to the first heat exchanger 40, the third opening 113 is connected to the first gas inlet 31, and the fourth opening 114 is connected to the second exhaust outlet 62.

[0083] In refrigeration mode, after the compressor 30 compresses the cooling medium, it is discharged into the separator 90 through the first exhaust port 32 for separation, and then enters the four-way valve 110 through the first opening 111. Finally, it flows to the first heat exchanger 40 through the first opening 112. The cooling medium after being evaporated by the second heat exchanger 60 can enter the four-way valve 110 through the second exhaust port 62 and the fourth opening 114, and enter the compressor 30 through the third opening 113 and the first gas collection port 31 to complete the refrigeration cycle.

[0084] In heating mode, after the compressor 30 compresses the cooling medium, it is discharged into the separator 90 through the first exhaust port 32 for separation, and then enters the four-way valve 110 through the first opening 111. Finally, it flows to the second heat exchanger 60 through the fourth opening 114. The cooling medium that has absorbed heat through evaporation in the first heat exchanger 40 can enter the four-way valve 110 through the second opening 112, and then enter the compressor 30 through the third opening 113 and the first gas inlet 31 to complete the heating cycle.

[0085] In defrost mode, after the compressor 30 compresses the cooling medium, it is discharged into the separator 90 through the first exhaust port 32 for separation, and then enters the four-way valve 110 through the first opening 111. Finally, it flows to the first heat exchanger 40 through the second opening 112. The cooling medium after evaporation in the second heat exchanger 60 can enter the four-way valve 110 through the second exhaust port 62 and the fourth opening 114, and then enter the compressor 30 through the third opening 113 and the first gas inlet 31 to complete the defrost cycle.

[0086] The first dryer filter 120 is connected to the first heat exchanger 40, the second heat exchanger 60, and the first air port 51. The first dryer subcooler is used to dry the cooling medium and filter impurities in the cooling medium. It can be understood that the cooling medium discharged from the first heat exchanger 40 or the second heat exchanger 60, after passing through the first dryer filter 120, enters the economizer 50 through the first air port 51.

[0087] The second dryer subcooler connects the separator 90 and the third opening 113. The second dryer subcooler is used to dry the cooling medium and filter impurities in the cooling medium. After the compressor 30 discharges the cooling medium to the separator 90 through the first exhaust port 32, it can also first enter the second dryer filter 130 to dry and filter the cooling medium, and then enter the four-way valve 110 through the third opening 113, and then enter the first heat exchanger 40 through the second opening 112, or enter the second heat exchanger 60 through the fourth opening 114 and the second exhaust port 62.

[0088] Ball valve 140 is connected to the first heat exchanger 40, the second heat exchanger 60, and the first dryer filter 120. Ball valve 140 is a valve that can be manually closed. The cooling medium discharged from the first heat exchanger 40 or the second heat exchanger 60 first passes through ball valve 140, then through the first dryer filter 120, and finally enters economizer 50.

[0089] The first check valve 151 connects the second electronic expansion valve 82 and the first heat exchanger 40. It ensures that the cooling medium after being depressurized and throttled by the second electronic expansion valve 82 can enter the first heat exchanger 40 through the first check valve 151. However, in the cooling mode, the cooling medium discharged from the first heat exchanger 40 cannot flow through the first check valve 151 toward the second electronic expansion valve 82, so as to prevent the cooling medium from flowing directly to the second heat exchanger 60 without being subcooled by the economizer 50, thereby ensuring the performance of the refrigeration equipment 100.

[0090] The second check valve 152 connects the first heat exchanger 40 and the ball valve 140. It ensures that the cooling medium after passing through the first heat exchanger 40 can flow through the second check valve 152 to the ball valve 140, and then through the first dryer subcooler to enter the economizer 50 for subcooling. However, in heating mode, the cooling medium discharged from the second heat exchanger 60 cannot flow directly into the first heat exchanger 40 through the second check valve 152, to prevent the cooling medium from flowing directly to the first heat exchanger 40 without being subcooled by the economizer 50, thereby ensuring the performance of the refrigeration equipment 100.

[0091] The third check valve 153 connects the second air intake port 61 and the ball valve 140, ensuring that the cooling medium discharged from the second air intake port 61 can flow to the ball valve 140, and then pass through the first dryer subcooler to enter the economizer 50 for subcooling. However, in cooling mode, the cooling medium discharged from the first heat exchanger 40 cannot flow directly into the second heat exchanger 60 through the third check valve 153, to prevent the cooling medium from flowing directly to the second heat exchanger 60 without being subcooled by the economizer 50, thereby ensuring the performance of the refrigeration equipment 100.

[0092] The fourth one-way valve 154 is connected to the second electronic expansion valve 82 and the second gas inlet 61. It ensures that the cooling medium, after being depressurized and throttled by the second electronic expansion valve 82, can flow into the second heat exchanger 60 through the fourth one-way valve 154. However, in heating mode, the cooling medium discharged from the second heat exchanger 60 cannot flow directly into the second electronic expansion valve 82 through the fourth one-way valve 154. This is to prevent the cooling medium from flowing directly into the economizer 50 without being dried, filtered, and detected by the first dryer filter 120 and the detection device 20. This ensures accurate control of the flow rate of the cooling medium within the refrigeration equipment 100, thereby guaranteeing the performance of the refrigeration equipment 100.

[0093] The fifth check valve 155 connects the second opening 112 and the air inlet 33, ensuring that the cooling medium after evaporation and heat absorption by the first electronic expansion valve 81 and the economizer 50 can flow into the compressor 30 through the fifth check valve 155 and the air inlet 33, but the cooling medium in the compressor 30 is directly connected to the economizer 50 through the air inlet 33 and the second opening 112.

[0094] The sixth check valve 156 is connected to the second solenoid valve 72, which ensures that the liquid storage device 10 discharges the cooling medium through the drain pipe 13 and the second solenoid valve 72 to the space between the second electronic expansion valve 82 and the fourth check valve 154. However, it prevents the cooling medium from directly entering the liquid storage device 10 through the second solenoid valve 72 and the drain pipe 13, so as to prevent the cooling medium in the refrigeration equipment 100 from being insufficient and to ensure the performance of the refrigeration equipment 100.

[0095] The first orifice plate 160 is located between the third electronic expansion valve and the first gas inlet 31, and the second orifice plate 170 is located between the second dryer filter 130 and the third opening 113. The first orifice plate 160 and the second orifice plate 170 can reduce the pressure of the cooling medium to prevent excessive pressure in the compressor 30 and the four-way valve 110.

[0096] Please combine Figure 1 and Figure 6 This application provides an adjustment method, which includes:

[0097] Step 01: Detect the status information of the cooling medium in the refrigeration equipment 100;

[0098] Step 02: Based on the status information, discharge the cooling medium from the liquid storage device 10 of the refrigeration equipment 100, or discharge the cooling medium from the refrigeration equipment 100 to the liquid storage device 10.

[0099] In the adjustment method of this application embodiment, since the state information of the cooling medium in the refrigeration equipment 100 can be detected to know the subcooling degree of the cooling medium in the refrigeration equipment 100, it can be determined whether the refrigeration equipment 100 lacks cooling medium. When the refrigeration equipment 100 lacks cooling medium, that is, when the cooling medium is subcooled, the cooling medium is discharged from the liquid storage device 10 to replenish it. When the refrigeration equipment 100 does not lack cooling medium, the excess cooling medium can be discharged from the refrigeration equipment 100 to the liquid storage device 10, thereby ensuring that the refrigeration equipment 100 is in the optimal operating state.

[0100] Specifically, the refrigeration equipment 100 includes a liquid storage device 10 and a detection device 20. The detection device 20 can detect the state information of the cooling medium in the refrigeration equipment 100, and based on the state information, determine whether to discharge the cooling medium from the liquid storage device 100 to replenish the cooling medium in the pipeline of the refrigeration equipment 100, or to discharge the cooling medium from the refrigeration equipment 100 to the liquid storage device 10 to discharge excess cooling medium in the pipeline of the refrigeration equipment 100 to the liquid storage device 10 for storage, thereby ensuring that the refrigeration equipment 100 is in the optimal operating state.

[0101] Please combine Figures 1 to 7In some embodiments, the status information includes pressure and temperature. Step 02: Based on the status information, discharging cooling medium from the liquid storage device 10 of the refrigeration device 100, or discharging cooling medium from the refrigeration device 100 to the liquid storage device 10, includes:

[0102] Step 021: Calculate the subcooling of the cooling medium based on the pressure and temperature;

[0103] Step 022: When the subcooling meets the preset conditions, coolant is discharged from the liquid storage device 10 to the pipeline of the refrigeration equipment 100 and / or the compressor 30 of the refrigeration equipment 100, or coolant is discharged from the pipeline to the liquid storage device 10.

[0104] Specifically, the detection device 20 can detect the pressure and temperature of the cooling medium in the refrigeration equipment 100 to obtain the temperature at the saturation pressure of the cooling medium and the temperature at the current pressure, thereby calculating the subcooling of the cooling medium. When the subcooling is small, it indicates that there is a lack of cooling medium in the refrigeration equipment 100, and cooling medium needs to be added. When the subcooling is large, it indicates that there is too much cooling medium in the refrigeration equipment 100, and the excess cooling medium needs to be discharged to the liquid storage device 10.

[0105] Therefore, when the subcooling meets the preset conditions, such as when the subcooling is low, cooling medium can be discharged from the liquid storage device 10 into the refrigeration equipment 100 through the pipeline, and / or discharged through the outlet 101 of the liquid storage device 10 into the first inlet 31 of the compressor 30 to replenish the cooling medium. Alternatively, when the subcooling is high, cooling medium can be discharged from the pipeline into the liquid storage device 10. That is, in refrigeration mode, the cooling medium discharged from the first heat exchanger 40 passes through the second one-way valve 152 and the first solenoid valve 71, and is discharged into the liquid storage device 10 through the liquid storage pipeline 12. In heating mode, the cooling medium discharged from the second heat exchanger 60 through the second inlet 61 passes through the third one-way valve 153 and the first solenoid valve 71, and is discharged into the liquid storage device 10 through the liquid storage pipeline 12.

[0106] The refrigeration equipment 100 includes a cooling mode, a heating mode, a defrosting mode, and a stop state. Preset conditions may include a first preset condition and a second preset condition. The first preset condition includes a first preset threshold and a second preset threshold, and the first preset condition corresponds to the cooling mode. The second preset condition includes a third preset threshold and a fourth preset threshold, and the second preset condition corresponds to the heating mode.

[0107] When the refrigeration equipment 100 is in refrigeration mode and the subcooling degree is less than or equal to the first preset threshold, it is determined that the refrigeration equipment 100 lacks cooling medium.

[0108] Thus, the refrigeration equipment 100 can replenish the cooling medium by opening the second solenoid valve 72, allowing the liquid storage device 10 to discharge the cooling medium through the drain pipe 13 and mix it with the cooling medium after being depressurized and throttled by the second electronic expansion valve 82. The refrigeration equipment 100 can also replenish the cooling medium by opening the third solenoid valve 73, allowing the compressor 30 to draw in gaseous cooling medium from inside the liquid storage device 10 through the outlet 101 and the first inlet 31. The refrigeration equipment 100 can also simultaneously open the second solenoid valve 72 and the third solenoid valve 73, allowing the liquid storage device 10 to replenish the cooling medium simultaneously through the drain pipe 13 and the outlet 101, thereby ensuring that the refrigeration equipment 100 is in optimal operating condition.

[0109] Preferably, when the refrigeration equipment 100 is in refrigeration mode and the subcooling degree is less than or equal to the first preset threshold, such as when the subcooling degree is less than or equal to the preset temperature, such as when it is less than or equal to 5°C, the refrigeration equipment 100 can first open the second solenoid valve 72 to replenish the cooling medium of the refrigeration equipment 100 through the drain device, and continuously detect whether the status information is less than or equal to the first preset threshold. If the status information is still less than or equal to the first preset threshold after running for a period of time (such as after 10 minutes), the refrigeration equipment 100 can then open the third solenoid valve 73 so that the compressor 30 can draw the gaseous cooling medium in the liquid storage device 10 into the compressor 30 through the outlet 101 and the first inlet 31 to further replenish the cooling medium.

[0110] When the refrigeration equipment 100 is in refrigeration mode and the subcooling degree is greater than the second preset threshold, such as greater than 6°C, it can be determined that the refrigeration equipment 100 has excess cooling medium.

[0111] In this way, the refrigeration equipment 100 can open the first solenoid valve 71 so that part of the cooling medium discharged from the first heat exchanger 40 can enter the cylinder 11 through the liquid storage pipe 12, thereby discharging the excess cooling medium in the refrigeration equipment 100 into the liquid storage device 10, thus ensuring that the refrigeration equipment 100 is in the best operating condition.

[0112] If the refrigeration equipment 100 is in heating mode and the subcooling degree is less than or equal to the third preset threshold, it is determined that the refrigeration equipment 100 lacks cooling medium.

[0113] Thus, the refrigeration equipment 100 can replenish the cooling medium by opening the second solenoid valve 72, allowing the liquid storage device 10 to discharge the cooling medium through the drain pipe 13 and mix it with the cooling medium after being depressurized and throttled by the second electronic expansion valve 82. The refrigeration equipment 100 can also replenish the cooling medium by opening the third solenoid valve 73, allowing the compressor 30 to draw in the cooling medium from inside the liquid storage device 10 through the outlet 101 and the first inlet 31. Furthermore, the refrigeration equipment 100 can simultaneously open the second solenoid valve 72 and the third solenoid valve 73, allowing the liquid storage device 10 to replenish the cooling medium simultaneously through the drain pipe 13 and the outlet 101, thereby ensuring that the refrigeration equipment 100 is in optimal operating condition.

[0114] Preferably, when the refrigeration equipment 100 is in heating mode and the subcooling degree is less than or equal to the third preset threshold, such as when the subcooling degree is less than the preset temperature, such as less than or equal to 3°C, the refrigeration equipment 100 can first open the second solenoid valve 72 to replenish the cooling medium of the refrigeration equipment 100 through the drain device, and continuously detect whether the status information is less than or equal to the third preset threshold. If the status information is still less than or equal to the third preset threshold after running for a period of time (such as after 10 minutes), the refrigeration equipment 100 can then open the third solenoid valve 73 so that the compressor 30 can draw the gaseous cooling medium in the liquid storage device 10 into the compressor 30 through the outlet 101 and the first inlet 31 to further replenish the cooling medium.

[0115] When the refrigeration equipment 100 is in heating mode and the subcooling degree is greater than the fourth preset threshold, such as greater than 4°C, it can be determined that the refrigeration equipment 100 has excess cooling medium.

[0116] In this way, the refrigeration equipment 100 can open the first solenoid valve 71 so that part of the cooling medium discharged from the second heat exchanger 60 can enter the cylinder 11 through the liquid storage pipe 12, thereby discharging the excess cooling medium in the refrigeration equipment 100 into the liquid storage device 10, thus ensuring that the refrigeration equipment 100 is in the best operating condition.

[0117] When the refrigeration equipment 100 is in defrosting mode, the detection device 20 can detect the pressure of the cooling medium before it enters the economizer 50, i.e., the status information, and if the pressure is greater than or equal to the fifth preset threshold, it determines that there is too much cooling medium in the first heat exchanger 40 and that drainage is required.

[0118] The refrigeration equipment 100 can open the first solenoid valve 71, allowing the liquid storage device 10 to discharge excess cooling medium into the liquid storage device 10 through the liquid storage pipeline 12. The refrigeration equipment 100 can also open the third solenoid valve 73, allowing the compressor 30 to absorb gaseous cooling medium from the liquid storage device 10 into the compressor 30 through the first intake port 31 and the exhaust port 101, so that the liquid storage device 10 can store more liquid cooling medium.

[0119] Preferably, when the refrigeration equipment 100 is in defrosting mode and the pressure is greater than or equal to the fifth preset threshold, such as when the pressure is greater than or equal to the preset pressure, the refrigeration equipment 100 simultaneously opens the first solenoid valve 71 and the third solenoid valve 73, so that the liquid storage device 10 can pass through the liquid storage pipe 12 and the air outlet 101, and at the same time discharge the excess cooling medium in the first heat exchanger 40 into the liquid storage device 10, so as to prevent the excess liquid cooling medium inside the first heat exchanger 40 from entering the compressor 30 through the first air inlet 31 when switching to the heating mode after the defrosting mode ends, thereby causing liquid slugging and ensuring the stability of the refrigeration equipment 100.

[0120] Furthermore, when the refrigeration equipment 100 is in defrosting mode, if the liquid level switch 14 detects that the capacity of the cooling medium in the liquid storage device 10 has reached the predetermined capacity, the refrigeration equipment 100 needs to close the third solenoid valve 73, that is, stop discharging the cooling medium to the compressor 30, so as to prevent the compressor 30 from drawing in liquid cooling medium through the first air intake port 31 and the air outlet 101 and causing wet compression, thereby ensuring the stability of the refrigeration equipment 100.

[0121] When the refrigeration equipment 100 is in a stopped state, the refrigeration equipment 100 can open the first solenoid valve 71 to collect the cooling medium in the refrigeration equipment 100 into the liquid storage device 10. The refrigeration equipment 100 can also open the third solenoid valve 73 to collect the gaseous cooling medium in the liquid storage device 10 into the compressor 30. The refrigeration equipment 100 can also open the first solenoid valve 71 and the third solenoid valve 73 at the same time to collect the gaseous cooling medium in the refrigeration equipment 100 into the compressor 30 and collect the liquid cooling medium into the liquid storage device 10. This completes the centralized collection of the cooling medium when the refrigeration equipment 100 is stopped, thereby preventing the cooling medium from causing the first heat exchanger 40 and the second heat exchanger 60 to freeze, and ensuring the stability of the refrigeration equipment 100.

[0122] Furthermore, when the refrigeration equipment 100 is in a stopped state, if the level switch 14 detects that the capacity of the cooling medium in the liquid storage device 10 has reached the predetermined capacity, the refrigeration equipment 100 needs to close the third solenoid valve 73, that is, stop discharging the cooling medium to the compressor 30, so as to prevent the liquid cooling medium in the liquid storage device 10 from entering the compressor 30 and causing the internal pressure of the liquid storage device 10 to be low, resulting in a low pressure alarm when the refrigeration equipment 100 is working, thereby ensuring the stability of the refrigeration equipment 100.

[0123] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is 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.

[0124] It is worth noting that 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. Features defined as "first" or "second" may explicitly or implicitly include at least one feature. In the description of this application, "multiple" means at least two, two in one embodiment, or three, unless otherwise expressly defined.

[0125] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A refrigeration device, characterized in that, include: A liquid storage device for storing or discharging a cooling medium; A detection device is used to detect the state information of the cooling medium in the refrigeration equipment, and discharge the cooling medium from the liquid storage device or discharge the cooling medium from the refrigeration equipment to the liquid storage device according to the state information; The liquid storage device includes: A cylindrical body for storing the cooling medium; A liquid storage pipeline, at least partially located within the cylinder, is used to discharge the cooling medium into the cylinder; A drain pipe, at least partially located inside the cylinder, is used to discharge the cooling medium inside the cylinder; A level switch, at least partially located within the cylinder, is used to detect the volume of the cooling medium within the cylinder. The refrigeration equipment also includes: The compressor includes a first intake port and a first exhaust port; The first heat exchanger is connected to the first exhaust port; An economizer, wherein the first heat exchanger is connected to the economizer, and the detection device is located between the economizer and the first heat exchanger; and The second heat exchanger includes a second gas inlet and a second gas outlet. The second gas inlet is connected to the economizer, and the second gas outlet is connected to the first gas inlet. The liquid storage pipeline connects the first heat exchanger and the second heat exchanger, and the liquid discharge pipeline connects the economizer and the second heat exchanger. The cylinder has an air outlet that extends away from the cylinder. The refrigeration equipment also includes a first solenoid valve, a second solenoid valve, and a third solenoid valve. The first solenoid valve is connected to the first heat exchanger, the liquid storage pipeline, and the second air inlet. The second solenoid valve is connected to the liquid discharge pipeline and the second air inlet. The third solenoid valve is connected to the air outlet and the first air inlet.

2. The refrigeration equipment according to claim 1, characterized in that, When the refrigeration equipment is in refrigeration mode and the status information is less than or equal to a first preset threshold, the second solenoid valve and / or the third solenoid valve open. When the refrigeration device is in the refrigeration mode and the status information is greater than the second preset threshold, the first solenoid valve opens. When the refrigeration equipment is in heating mode and the status information is less than or equal to a third preset threshold, the second solenoid valve and / or the third solenoid valve open. When the refrigeration equipment is in the heating mode and the status information is greater than the fourth preset threshold, the first solenoid valve opens. When the refrigeration equipment is in defrost mode and the status information is greater than or equal to the fifth preset threshold, the first solenoid valve and / or the third solenoid valve are opened. When the refrigeration equipment is in the defrost mode and the capacity reaches the preset capacity, the third solenoid valve closes. When the refrigeration equipment is in a stopped state, the first solenoid valve and / or the third solenoid valve are opened; When the refrigeration equipment is in the stopped state and the capacity reaches the preset capacity, the third solenoid valve closes.

3. The refrigeration equipment according to claim 1, characterized in that, The compressor further includes a gas inlet, and the economizer includes a first gas inlet, a second gas inlet, a third gas inlet, and a fourth gas inlet. The first gas inlet is connected to the first heat exchanger and the second gas inlet, and the second gas inlet is connected to the gas inlet. The refrigeration equipment further includes a first electronic expansion valve and a second electronic expansion valve. The first electronic expansion valve is connected to the third gas inlet and the fourth gas inlet, and the second electronic expansion valve is connected to the fourth gas inlet and the second gas inlet. The second electronic expansion valve is also connected to the fourth gas inlet and the first heat exchanger.

4. The refrigeration equipment according to claim 3, characterized in that, The refrigeration equipment also includes a separator, a four-way valve, a first dryer filter, a second dryer filter, and a ball valve. The four-way valve includes a first opening, a second opening, a third opening, and a fourth opening that are interconnected. The first opening is connected to the separator, the second opening is connected to the first heat exchanger, the third opening is connected to the first gas inlet, and the fourth opening is connected to the second gas outlet. The first drying filter is connected to the first heat exchanger, the second heat exchanger, and the first gas outlet. The detection device is located between the first drying filter and the first gas outlet. The second drying filter is connected to the separator and the third opening. The ball valve is connected to the first heat exchanger, the second heat exchanger, and the first drying filter.

5. The refrigeration equipment according to claim 4, characterized in that, The refrigeration equipment further includes a first one-way valve, a second one-way valve, a third one-way valve, a fourth one-way valve, a fifth one-way valve, and a sixth one-way valve. The first one-way valve is connected to the second electronic expansion valve and the first heat exchanger. The second one-way valve is connected to the first heat exchanger and the ball valve. The third one-way valve is connected to the second gas inlet and the ball valve. The fourth one-way valve is connected to the second electronic expansion valve and the second gas inlet. The fifth one-way valve is connected to the second gas inlet and the gas supply inlet. The sixth one-way valve is connected to the second solenoid valve to discharge the cooling medium between the second electronic expansion valve and the fourth one-way valve.

6. The refrigeration equipment according to claim 4, characterized in that, The refrigeration equipment further includes a first orifice plate and a second orifice plate. The first orifice plate is disposed between the third electronic expansion valve and the first gas inlet, and the second orifice plate is disposed between the second dryer filter and the third opening.

7. An adjustment method, applied to the refrigeration equipment according to claims 1 to 6, characterized in that, include: Detect the status information of the cooling medium in the refrigeration equipment; Based on the status information, the cooling medium is discharged from the liquid storage device of the refrigeration equipment, or the cooling medium is discharged from the refrigeration equipment to the liquid storage device.

8. The adjustment method according to claim 7, characterized in that, The status information includes pressure and temperature. The step of discharging the cooling medium from the liquid storage device of the refrigeration equipment, or discharging the cooling medium from the refrigeration equipment to the liquid storage device, based on the status information, includes: Calculate the subcooling of the cooling medium based on the pressure and temperature. When the subcooling meets the preset conditions, the cooling medium is discharged from the liquid storage device to the pipeline of the refrigeration equipment and / or the compressor of the refrigeration equipment, or the cooling medium is discharged from the pipeline to the liquid storage device.

9. The adjustment method according to claim 8, characterized in that, The refrigeration equipment includes a refrigeration mode, and the preset conditions include a first preset condition, which includes a first preset threshold and a second preset threshold. The step of discharging the cooling medium from the liquid storage device to the pipeline of the refrigeration equipment and / or the compressor of the refrigeration equipment, or discharging the cooling medium from the pipeline to the liquid storage device, when the subcooling meets the preset conditions, includes: When the refrigeration equipment is in the refrigeration mode and the subcooling degree is less than or equal to the first preset threshold, the cooling medium is discharged from the liquid storage device to the pipeline and / or the compressor; When the refrigeration equipment is in refrigeration mode and the subcooling degree is greater than the second preset threshold, the cooling medium is discharged from the pipeline to the liquid storage device.

10. The adjustment method according to claim 8, characterized in that, The refrigeration equipment includes a heating mode. The preset conditions include a second preset condition, which includes a third preset threshold and a fourth preset threshold. The step of discharging the cooling medium from the liquid storage device to the pipeline of the refrigeration equipment and / or the compressor of the refrigeration equipment, or discharging the cooling medium from the pipeline to the liquid storage device, when the subcooling meets the preset conditions, includes: When the refrigeration equipment is in heating mode and the subcooling degree is less than or equal to the third preset threshold, the cooling medium is discharged from the liquid storage device to the pipeline and / or the compressor. When the refrigeration equipment is in heating mode and the subcooling degree is less than or equal to the fourth preset threshold, the cooling medium is discharged from the pipeline to the liquid storage device.

11. The adjustment method according to claim 8, characterized in that, The refrigeration equipment also includes a defrosting mode, and the adjustment method further includes: When the refrigeration equipment is in the defrost mode and the pressure is greater than or equal to the fifth preset threshold, the cooling medium is discharged from the liquid storage device to the pipeline and / or the compressor. When the refrigeration equipment is in the defrost mode and the capacity of the cooling medium stored in the liquid storage device is greater than or equal to a predetermined capacity, the discharge of the cooling medium to the compressor is stopped.

12. The adjustment method according to claim 8, characterized in that, The adjustment method further includes: When the refrigeration equipment is in a stopped state, the cooling medium is discharged from the liquid storage device into the pipeline and / or the compressor; When the refrigeration equipment is in the stopped state and the capacity of the cooling medium stored in the liquid storage device is greater than or equal to a predetermined capacity, the discharge of the cooling medium to the compressor shall be stopped.

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