A control method of a compressor oil supply system and a related device

Abstract

The application relates to a control method of a compressor oil supply system and a related device, the compressor oil supply system comprising an oil storage tank with multiple oil storage spaces and multiple electromagnetic valves, the multiple oil storage spaces corresponding to the multiple electromagnetic valves one by one, and the outlet of each oil storage space being connected to the compressor through the corresponding electromagnetic valve, the method comprising: when the compressor is started, controlling a first electromagnetic valve in the multiple electromagnetic valves to be opened, so that a first oil storage space corresponding to the first electromagnetic valve in the multiple oil storage spaces supplies oil to the compressor; after the compressor is started, acquiring an operating parameter of the compressor; and according to the operating parameter, controlling each electromagnetic valve except the first electromagnetic valve in the multiple electromagnetic valves. The application realizes dynamic adjustment of the oil supply amount of the compressor, so that the oil supply amount of the dynamically adjusted compressor can meet the refrigeration oil demand of the compressor, thereby reducing the influence on the performance of the air conditioning unit.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and in particular to a control method for a compressor oil supply system and related equipment. Background Technology

[0002] Refrigerant oil plays a crucial role in the performance of water-cooled screw air conditioning units. During operation, ensuring a sufficient supply of refrigerant oil reduces friction and wear on the compressor, lowers operating noise, and provides lubrication throughout the compressor's operation. Furthermore, it seals the piston and cylinder surfaces, as well as the rotating bearings within the compressor. In addition, it enables volumetric regulation and control of the compression, and reduces bearing temperature within the compressor. Therefore, ensuring a sufficient supply of refrigerant oil to the compressor is essential for the long-term, efficient operation of the air conditioning unit under various conditions.

[0003] However, because the refrigerant oil and refrigerant mix and participate in the refrigeration cycle of a water-cooled screw air conditioning unit, a large refrigerant oil charge can negatively impact the heat exchange efficiency, leading to reduced cooling capacity and energy efficiency. This is especially true for air conditioning units with multiple operating conditions, such as ice storage and high-temperature heat pumps. Under conditions of high chilled water temperature and low cooling water temperature, the pressure difference is small, requiring a larger supply of refrigerant oil to meet the compressor's needs. Conversely, under conditions of low chilled water temperature and high cooling water temperature, the pressure difference is large, and less refrigerant oil is needed. Excessive refrigerant oil can actually decrease the unit's heat exchange performance. Currently, for most water-cooled screw air conditioning units, the refrigerant oil circulation volume is fixed. To ensure normal operation under low pressure differences, a larger refrigerant oil charge is typically used to guarantee reliable operation. In this situation, when the air conditioning unit is running under normal operating conditions, the performance of the air conditioning unit is likely to decrease due to the excessive amount of refrigerant oil. Summary of the Invention

[0004] This application provides a control method for a compressor oil supply system and related equipment to solve the problem that the supply of refrigerant oil to the compressor in a water-cooled screw air conditioning unit cannot be adjusted, which affects the performance of the air conditioning unit.

[0005] In a first aspect, this application provides a control method for a compressor oil supply system. The compressor oil supply system includes an oil storage tank with multiple oil storage spaces and multiple solenoid valves. Each of the multiple oil storage spaces corresponds one-to-one with one of the multiple solenoid valves. The outlet of each oil storage space is connected to the compressor through the corresponding solenoid valve. The method includes:

[0006] When the compressor is turned on, the first solenoid valve among the plurality of solenoid valves is opened, so that the first oil storage space corresponding to the first solenoid valve among the plurality of oil storage spaces supplies oil to the compressor.

[0007] After the compressor is turned on, the operating parameters of the compressor are obtained;

[0008] Based on the operating parameters, each of the multiple solenoid valves, excluding the first solenoid valve, is controlled.

[0009] In an optional embodiment, the plurality of oil storage spaces further includes a second oil storage space in addition to the first oil storage space, and the plurality of solenoid valves further includes a second solenoid valve in addition to the first solenoid valve, the second solenoid valve corresponding to the second oil storage space, and the operating parameters include the actual exhaust temperature.

[0010] The step of controlling each of the plurality of solenoid valves, excluding the first solenoid valve, according to the operating parameters includes:

[0011] Determine the target temperature range to which the actual exhaust temperature belongs;

[0012] The on / off state of the second solenoid valve is controlled according to the target temperature range.

[0013] In an optional implementation, controlling the on / off state of the second solenoid valve according to the target temperature range includes:

[0014] When the actual exhaust temperature is greater than or equal to the first preset temperature in the target temperature range, the second solenoid valve is controlled to be in the open state so that the second oil storage space supplies oil to the compressor.

[0015] When the actual exhaust temperature is less than or equal to the second preset temperature in the target temperature range, the switching state of the second solenoid valve is controlled to be closed so that the second oil storage space does not supply oil to the compressor and the second preset temperature is less than the first preset temperature.

[0016] When the actual exhaust temperature is greater than the second preset temperature but less than the first preset temperature within the target temperature range, the switching state of the second solenoid valve remains unchanged.

[0017] In an optional embodiment, the oil storage tank among the plurality of oil storage spaces further includes a third oil storage space in addition to the first oil storage space and the second oil storage space, and the plurality of solenoid valves further includes a third solenoid valve in addition to the first solenoid valve and the second solenoid valve, the third solenoid valve corresponding to the third oil storage space, and the operating parameters include actual exhaust temperature, actual intake pressure and actual exhaust pressure.

[0018] The step of controlling each of the plurality of solenoid valves, excluding the first solenoid valve, according to the operating parameters includes:

[0019] Determine the actual intake and exhaust pressure difference between the actual intake pressure and the actual exhaust pressure;

[0020] The actual opening degree of the third solenoid valve is determined based on the actual intake and exhaust pressure difference and the actual exhaust temperature.

[0021] Control the opening degree of the third solenoid valve to the actual opening degree.

[0022] In an optional implementation, determining the actual opening degree of the third solenoid valve based on the actual intake and exhaust pressure difference and the actual exhaust temperature includes:

[0023] The preset suction and discharge pressure difference corresponding to the compressor, the preset discharge temperature corresponding to the compressor, and the preset opening degree corresponding to the third solenoid valve are determined. The preset suction and discharge pressure difference is used to characterize the suction and discharge pressure difference when the compressor is running stably. The preset discharge temperature is used to characterize the discharge temperature when the compressor is running stably. The preset opening degree is used to characterize the opening degree of the third solenoid valve when the compressor is running stably.

[0024] Determine a first difference between the preset intake and exhaust pressure difference and the actual intake and exhaust pressure difference, and a second difference between the actual exhaust temperature and the preset exhaust temperature;

[0025] The actual opening degree of the third solenoid valve is determined based on the first difference, the second difference, and the preset opening degree.

[0026] In an optional implementation, determining the actual opening degree of the third solenoid valve based on the first difference, the second difference, and the preset opening degree includes:

[0027] The first difference, the second difference, and the preset opening degree are input into the opening degree calculation formula to obtain the actual opening degree of the third solenoid valve. The opening degree calculation formula includes:

[0028] D = a*(ΔP0 - ΔP) + b*(T) 排 -T0)+D0

[0029] In the above formula, D represents the actual opening degree of the third solenoid valve, a represents the first preset coefficient, ΔP0-ΔP represents the first difference, ΔP0 represents the preset intake and exhaust pressure difference, ΔP represents the actual intake and exhaust pressure difference, b represents the second preset coefficient, and T 排 -T0 represents the second difference, T 排 T0 represents the actual exhaust temperature, D0 represents the preset exhaust temperature, and D0 represents the preset opening degree.

[0030] In one optional embodiment, a first ball valve is provided at the outlet of each of the oil storage spaces, and a second ball valve is provided at the inlet of each of the oil storage spaces.

[0031] The method further includes:

[0032] After the compressor is turned on, abnormal fault detection is performed on each of the oil storage spaces in the compressor oil supply system;

[0033] When an abnormal fault occurs in the oil storage space of the compressor oil supply system, the first ball valve at the outlet of the oil storage space controlling the abnormal fault is closed, and the second ball valve at the inlet of the oil storage space controlling the abnormal fault is closed.

[0034] After the first ball valve and the second ball valve are closed, an abnormal fault prompt message corresponding to the oil storage space is generated;

[0035] The abnormal fault message is pushed to the target terminal.

[0036] Secondly, this application provides a control device for a compressor oil supply system. The compressor oil supply system includes an oil storage tank with multiple oil storage spaces and multiple solenoid valves. Each of the multiple oil storage spaces corresponds one-to-one with a single solenoid valve. The outlet of each oil storage space is connected to the compressor through a corresponding solenoid valve. The device includes:

[0037] The control module is used to control the first solenoid valve among the plurality of solenoid valves to open when the compressor is turned on, so that the first oil storage space corresponding to the first solenoid valve among the plurality of oil storage spaces supplies oil to the compressor.

[0038] The acquisition module is used to acquire the operating parameters of the compressor after the compressor is turned on;

[0039] The control module is also used to control each of the multiple solenoid valves, excluding the first solenoid valve, according to the operating parameters.

[0040] Thirdly, this application provides a compressor oil supply system, including: an oil storage tank with multiple oil storage spaces, multiple solenoid valves, a processor, and a memory. The multiple oil storage spaces correspond one-to-one with the multiple solenoid valves. The outlet of each oil storage space is connected to the compressor through the corresponding solenoid valve. The processor is connected to the multiple solenoid valves and the memory. The processor is used to execute the control program of the compressor oil supply system stored in the memory to realize the control method of the compressor oil supply system as described above.

[0041] Fourthly, this application also provides an air conditioning unit, including the compressor oil supply system described above.

[0042] Fifthly, this application also provides a storage medium storing computer-executable instructions for executing the control method of the compressor oil supply system described above.

[0043] Compared with the prior art, the technical solution provided in this application has the following advantages. The method provided in this application is applied to a compressor oil supply system. The compressor oil supply system includes an oil storage tank with multiple oil storage spaces and multiple solenoid valves. The multiple oil storage spaces correspond one-to-one with the multiple solenoid valves. The outlet of each oil storage space is connected to the compressor through the corresponding solenoid valve. The method includes: when the compressor is turned on, controlling the first solenoid valve among the multiple solenoid valves to open, so that the first oil storage space corresponding to the first solenoid valve among the multiple oil storage spaces supplies oil to the compressor; after the compressor is turned on, acquiring the operating parameters of the compressor; and controlling each solenoid valve among the multiple solenoid valves except for the first solenoid valve according to the operating parameters. In this embodiment, by dividing the oil storage tank into multiple oil storage spaces and setting a corresponding solenoid valve for each oil storage space, the first solenoid valve is opened simultaneously with the compressor, so that the first oil storage space corresponding to the first solenoid valve supplies oil to the compressor, thereby ensuring the basic oil supply during compressor operation. Furthermore, during compressor operation, the operating parameters of the compressor are detected to control each of the multiple solenoid valves except for the first solenoid valve, thereby achieving dynamic adjustment of the compressor's oil supply. This ensures that the dynamically adjusted oil supply of the compressor meets the compressor's refrigerant oil requirements, thus reducing the impact on the performance of the air conditioning unit. Attached Figure Description

[0044] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0045] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0047] Figure 1 A schematic flowchart illustrating a control method for a compressor oil supply system provided in an embodiment of this application;

[0048] Figure 2 A flowchart illustrating another control method for a compressor oil supply system provided in an embodiment of this application;

[0049] Figure 3 A schematic diagram of a compressor oil supply system provided in an embodiment of this application;

[0050] Figure 4 This is a schematic diagram of the structure of an oil storage tank provided in an embodiment of this application;

[0051] Figure 5 A schematic diagram of the structure of a control device for a compressor oil supply system provided in an embodiment of this application;

[0052] Figure 6 This is a schematic diagram of another compressor oil supply system provided in an embodiment of this application;

[0053] Figure 7 This is a schematic diagram of the structure of an air conditioning unit provided in an embodiment of this application;

[0054] In the attached diagrams above:

[0055] 10. Oil storage tank; 11. First oil storage space; 12. Second oil storage space; 13. Third oil storage space; 20. First solenoid valve; 21. Second solenoid valve; 22. Third solenoid valve; 30. Outlet; 31. Inlet; 40. First ball valve; 41. Second ball valve; 50. Sight glass; 60. Oil inlet pipeline; 61. Oil outlet pipeline;

[0056] 501. Control module; 502. Acquisition module;

[0057] 600. Compressor oil supply system; 601. Processor; 602. Memory; 6021. Operating system; 6022. Application program; 603. User interface; 604. Network interface; 605. Bus system; 606. Solenoid valve;

[0058] 700. Air conditioning unit. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0060] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0061] refer to Figure 3 and Figure 4 This application provides a compressor oil supply system, including an oil tank 10 with multiple oil storage spaces and multiple solenoid valves, with each oil storage space corresponding to one of the multiple solenoid valves. Each oil storage space has an outlet 30 and an inlet 31. The outlet 30 of each oil storage space is connected to the compressor through a corresponding solenoid valve, and the inlet 31 of each oil storage space is connected to an oil inlet pipe 60. The oil storage spaces store refrigerant oil and are used to supply oil to the compressor. Each oil storage space is connected to the compressor by an oil outlet pipe 61, and a solenoid valve is installed on the oil outlet pipe. By controlling each solenoid valve, the oil storage space corresponding to each solenoid valve supplies oil to the compressor. The various oil storage spaces are not interconnected.

[0062] In this embodiment, there are three oil storage spaces: a first oil storage space 11, a second oil storage space 12, and a third oil storage space 13. Correspondingly, there are three solenoid valves: a first solenoid valve 20 corresponding to the first oil storage space 11, a second solenoid valve 21 corresponding to the second oil storage space 12, and a third solenoid valve 22 corresponding to the third oil storage space 13. When supplying oil to the compressor in the air conditioning unit, the first solenoid valve 20, the second solenoid valve 21, and the third solenoid valve 22 can be controlled to control the first oil storage space 11, the second oil storage space 12, and the third oil storage space 13, thereby achieving dynamic adjustment of the compressor's oil supply and preventing the inability to adjust the compressor's oil supply from affecting the performance of the air conditioning unit.

[0063] In the above description, the first solenoid valve 20 corresponding to the first oil storage space 11 opens and closes simultaneously with the compressor to ensure a basic oil supply during compressor operation. That is, when the compressor starts, the first solenoid valve 20 corresponding to the first oil storage space 11 opens, and when the compressor stops, the first solenoid valve 20 corresponding to the first oil storage space 11 closes. The first solenoid valve 20 corresponding to the first oil storage space 11 has two states: open and closed. During compressor operation, the opening degree of the first solenoid valve 20 corresponding to the first oil storage space 11 cannot be dynamically adjusted.

[0064] The control of the second solenoid valve 21 corresponding to the second oil storage space 12 can be achieved by real-time monitoring of the compressor's operating parameters after the compressor is turned on. The second solenoid valve 21 corresponding to the second oil storage space 12 has two states: an open state and a closed state. Similarly, during compressor operation, the opening degree of the second solenoid valve 21 corresponding to the second oil storage space 12 cannot be dynamically adjusted.

[0065] The control of the third solenoid valve 22 corresponding to the third oil storage space 13 can be achieved by real-time monitoring of the compressor's operating parameters after the compressor is turned on. During compressor operation, the opening degree of the third solenoid valve 22 corresponding to the third oil storage space 13 can be dynamically adjusted.

[0066] The specific control methods for the first solenoid valve 20, the second solenoid valve 21, and the third solenoid valve 22 in this embodiment will be described below, and will not be repeated here. In this embodiment, by dividing the oil storage tank 10 into three oil storage spaces and setting solenoid valves with different functions for each oil storage space, the oil supply of the compressor can be dynamically adjusted while ensuring the basic oil supply of the compressor during operation. This ensures that the dynamically adjusted oil supply of the compressor can meet the compressor's refrigerant oil requirements, thereby reducing the impact on the performance of the air conditioning unit.

[0067] In this embodiment, to ensure that each oil storage space in the oil storage tank 10 supplies oil to the compressor, the oil storage tank 10 can be a cuboid. Along its height, the oil storage tank 10 is divided into multiple oil storage spaces: a first oil storage space 11, a second oil storage space 12, and a third oil storage space 13. The volumes of these three spaces can be the same or different; this embodiment does not impose a specific limitation and can be set according to actual needs. The arrangement order of the first oil storage space 11, the second oil storage space 12, and the third oil storage space 13 can be arranged according to actual needs. In this embodiment, the first oil storage space 11 is located at the top of the oil storage tank 10, the second oil storage space 12 is located at the bottom of the oil storage tank 10, and the third oil storage space 13 is located between the first oil storage space 11 and the second oil storage space 12 within the oil storage tank 10. Each oil storage space in the oil storage tank 10 is equipped with a sight glass 50 to observe the internal conditions of each oil storage space, enabling relevant personnel to make timely judgments based on the observed conditions. Specifically, sight glasses 50 are installed on the first oil storage space 11, the second oil storage space 12, and the third oil storage space 13.

[0068] In this embodiment, a first ball valve 40 is installed at the outlet 30 of each oil storage space in the oil storage tank 10, and a second ball valve 41 is installed at the inlet 31 of each oil storage space. Specifically, the first ball valve 40 is installed on the oil outlet pipe 61 near the outlet 30 of the oil storage space, and the second ball valve 41 is installed on the oil inlet pipe 60 near the inlet 31 of the oil storage space. The first ball valve 40 and the second ball valve 41 are normally open. During compressor operation, abnormal conditions in each oil storage space can be detected. When an abnormality occurs in an oil storage space or maintenance is required, the first ball valve 40 and the second ball valve 41 corresponding to that oil storage space can be closed, and relevant personnel can be notified for maintenance without the need to recover and recharge the refrigerant oil for the entire air conditioning unit. Specifically, a first ball valve 40 is installed at the outlet 30 of the first oil storage space 11, and a second ball valve 41 is installed at the inlet 31 of the first oil storage space 11; a first ball valve 40 is installed at the outlet 30 of the second oil storage space 12, and a second ball valve 41 is installed at the inlet 31 of the second oil storage space 12; a first ball valve 40 is installed at the outlet 30 of the third oil storage space 13, and a second ball valve 41 is installed at the inlet 31 of the third oil storage space 13.

[0069] refer to Figure 1 , Figure 1 This is a flowchart illustrating a control method for a compressor oil supply system provided in an embodiment of this application. The control method for a compressor oil supply system provided in this application includes the following steps:

[0070] S101: When the compressor is turned on, the first solenoid valve among the multiple solenoid valves is opened so that the first oil storage space corresponding to the first solenoid valve among the multiple oil storage spaces supplies oil to the compressor.

[0071] In this embodiment, the control method for the compressor oil supply system provided is applied to the compressor oil supply system described above. The compressor oil supply system also includes a processor to execute the specific steps of the control method provided in this embodiment. When a user needs to use the air conditioning unit, they can trigger the power button on a remote control that matches the air conditioning unit. The air conditioning unit responds to the power button's trigger operation, controlling the compressor to start and simultaneously sending a compressor start command to the processor in the compressor oil supply system. This causes the processor to control the first solenoid valve among multiple solenoid valves to open, thereby supplying oil to the compressor from the first oil storage space corresponding to the first solenoid valve among multiple oil storage spaces. Furthermore, when a user needs to use the air conditioning unit, they can also trigger the power-on control on a control panel that matches the air conditioning unit, causing the air conditioning unit to respond to the power-on control's trigger operation. By setting a first solenoid valve that starts and stops simultaneously with the compressor, the basic oil supply during compressor operation can be guaranteed.

[0072] S102: After the compressor is turned on, obtain the compressor's operating parameters.

[0073] S103: Control each of the multiple solenoid valves except for the first solenoid valve according to the operating parameters.

[0074] Regarding steps S102 and S103, after the compressor is started, and on the basis of ensuring the basic oil supply of the compressor, in order to reduce the impact on the performance of the air conditioning unit caused by the inability to dynamically adjust the oil supply of the compressor, the operating parameters of the compressor during operation are acquired after the compressor is started. Based on the acquired operating parameters of the compressor, the current operating condition of the compressor is determined. Then, based on the current operating condition of the compressor, each of the multiple solenoid valves except the first solenoid valve is controlled, thereby realizing the dynamic adjustment of the oil supply of the compressor to reduce the impact on the performance of the air conditioning unit.

[0075] The compressor's operating parameters, as described above, include the actual discharge temperature, actual suction pressure, and actual discharge pressure. Specifically, a temperature sensor is installed at the compressor's discharge port to collect the actual discharge temperature in real time during operation and send it to a processor in the compressor's oil supply system. The processor then performs logic control based on the actual discharge temperature. A first pressure sensor is also installed at the compressor's discharge port to collect the actual discharge pressure in real time during operation and send it to the processor in the compressor's oil supply system. A second pressure sensor is installed at the compressor's suction port to collect the actual suction pressure in real time during operation and send it to the processor in the compressor's oil supply system. The processor then performs logic control based on the actual suction pressure. In this embodiment, the actual discharge temperature, actual discharge pressure, and actual suction pressure of the compressor are detected during compressor operation to determine the compressor's current operating condition. Based on this current operating condition, all solenoid valves except the first solenoid valve are controlled, thereby dynamically adjusting the compressor's oil supply to reduce the impact on the air conditioning unit's performance. The compressor's current operating condition mentioned above includes both the compressor's current temperature and current pressure conditions.

[0076] This embodiment provides a control method for a compressor oil supply system. By dividing the oil storage tank into multiple oil storage spaces and setting a corresponding solenoid valve for each oil storage space, the first solenoid valve is controlled to open simultaneously with the compressor, so that the first oil storage space corresponding to the first solenoid valve supplies oil to the compressor, thereby ensuring the basic oil supply during compressor operation. Furthermore, during compressor operation, the operating parameters of the compressor are detected to control each of the multiple solenoid valves except for the first solenoid valve, thereby realizing the dynamic adjustment of the compressor's oil supply. This ensures that the dynamically adjusted oil supply of the compressor can meet the compressor's refrigerant oil requirements, thereby reducing the impact on the performance of the air conditioning unit.

[0077] refer to Figure 2 , Figure 2 This is a flowchart illustrating another control method for a compressor oil supply system provided in an embodiment of this application. This application provides a control method for a compressor oil supply system, comprising the following steps:

[0078] S201: When the compressor is turned on, the first solenoid valve among the multiple solenoid valves is opened so that the first oil storage space corresponding to the first solenoid valve among the multiple oil storage spaces supplies oil to the compressor.

[0079] S202: After the compressor is turned on, obtain the compressor's operating parameters.

[0080] In this embodiment, step S201 is the same as step S101 above, and step S202 is the same as step S102 above. For details, please refer to steps S101 and S102 above. In this embodiment, they will not be described in detail.

[0081] S203: Determine the target temperature range to which the actual exhaust temperature belongs.

[0082] S204: Based on the target temperature range, control the on / off state of the second solenoid valve (excluding the first solenoid valve) among multiple solenoid valves. The second solenoid valve corresponds to the second oil storage space (excluding the first oil storage space) among multiple oil storage spaces.

[0083] Regarding steps S203 and S204 above, after obtaining the actual discharge temperature of the compressor, the current temperature operating condition of the compressor is determined based on the actual discharge temperature. Based on the current temperature operating condition of the compressor, the on / off state of the second solenoid valve among multiple solenoid valves is controlled to achieve dynamic adjustment of the compressor's oil supply, thereby reducing the impact on air conditioning performance. Multiple temperature ranges corresponding to the compressor's discharge temperature can be preset. Each temperature range characterizes the current discharge temperature of the compressor, and each temperature range corresponds to a preset on / off state of the second solenoid valve. Multiple temperature ranges can be set according to actual needs. For example, there can be three temperature ranges: a first temperature range, a second temperature range, and a third temperature range. Specifically, the first temperature range is where the actual discharge temperature is greater than or equal to a first preset temperature T1; the second temperature range is where the actual discharge temperature is less than or equal to a second preset temperature T2; and the third temperature range is where the actual discharge temperature is greater than the second preset temperature T2 and less than the first preset temperature T1. The second solenoid valve corresponding to the first temperature range is in the open state, the second solenoid valve corresponding to the second temperature range is in the closed state, and the third solenoid valve corresponding to the third temperature range maintains the same open state as the previous moment. That is, if the open state was at the previous moment, the second solenoid valve is in the open state at the current moment, and if the closed state was at the previous moment, the second solenoid valve is in the closed state at the current moment.

[0084] In the above process, after obtaining the actual discharge temperature of the compressor, the temperature range into which the actual discharge temperature falls is determined, and this temperature range is defined as the target temperature range. For example, when there are multiple temperature ranges, including the first, second, and third temperature ranges mentioned above, if the actual discharge temperature falls within the first temperature range, then the first temperature range is defined as the target temperature range.

[0085] In step S204, based on the target temperature range, the on / off state of the second solenoid valve (excluding the first solenoid valve) among multiple solenoid valves is controlled, specifically including:

[0086] When the actual exhaust temperature is greater than or equal to the first preset temperature in the target temperature range, the second solenoid valve is controlled to be in the open state so that the second oil storage space supplies oil to the compressor.

[0087] When the actual exhaust temperature is less than or equal to the second preset temperature in the target temperature range, the second solenoid valve is controlled to be closed so that the second oil storage space does not supply oil to the compressor and the second preset temperature is less than the first preset temperature.

[0088] When the actual exhaust temperature is greater than the second preset temperature but less than the first preset temperature within the target temperature range, the switching state of the second solenoid valve remains unchanged.

[0089] In this embodiment, the first preset temperature and the second preset temperature can be set according to actual needs, and the specific values ​​of the first preset temperature and the second preset temperature are not limited in this embodiment. When the target temperature range is such that the actual exhaust temperature is greater than or equal to the first preset temperature, it indicates that the current temperature condition of the compressor is a condition with a high exhaust temperature. At this time, it is necessary to increase the supply of refrigerant oil to absorb the heat of the bearings in the compressor through the refrigerant oil, thereby reducing the bearing temperature. Therefore, the second solenoid valve needs to be controlled to be in the open state. When the target temperature range is such that the actual exhaust temperature is less than or equal to the second preset temperature, it indicates that the current temperature condition of the compressor is a condition with a low exhaust temperature. At this time, the compressor does not require a large supply of refrigerant oil, so the second solenoid valve needs to be controlled to be in the closed state. When the target temperature range is such that the actual exhaust temperature is greater than the second preset temperature but less than the first preset temperature, it is only necessary to keep the opening and closing state of the second solenoid valve at the current moment consistent with the opening and closing state of the second solenoid valve at the previous moment, without changing the opening and closing state of the second solenoid valve.

[0090] S205: Determine the actual intake and exhaust pressure difference between the actual intake pressure and the actual exhaust pressure.

[0091] S206: Based on the actual intake and exhaust pressure difference and the actual exhaust temperature, determine the actual opening degree of the third solenoid valve among the multiple solenoid valves, excluding the first and second solenoid valves. The third solenoid valve corresponds to the third oil storage space among the multiple oil storage spaces, excluding the first and second oil storage spaces.

[0092] S207: Controls the opening degree of the third solenoid valve to the actual opening degree.

[0093] Regarding steps S205 to S207 above, during the control of the compressor oil supply system, after step S202 is executed, steps S203 and S201 are executed simultaneously to dynamically adjust the compressor's refrigerant oil supply. By setting an adjustable third solenoid valve, when the actual discharge temperature, actual suction pressure, and actual discharge pressure of the compressor are detected, the refrigerant oil supply to the compressor is further dynamically adjusted based on the compressor's current temperature and differential pressure conditions, to more accurately supply refrigerant oil to the compressor. The actual suction and discharge pressure difference mentioned above is equal to the difference between the actual suction pressure and the actual discharge pressure.

[0094] In step S206, based on the actual intake and exhaust pressure difference and the actual exhaust temperature, the actual opening degree of the third solenoid valve (excluding the first and second solenoid valves) among multiple solenoid valves is determined, specifically including:

[0095] Determine the preset suction and discharge pressure difference corresponding to the compressor, the preset discharge temperature corresponding to the compressor, and the preset opening degree corresponding to the third solenoid valve. The preset suction and discharge pressure difference is used to characterize the suction and discharge pressure difference when the compressor is running stably. The preset discharge temperature is used to characterize the discharge temperature when the compressor is running at high temperature. The preset opening degree is used to characterize the opening degree of the third solenoid valve when the compressor is running stably.

[0096] Determine the first difference between the preset intake and exhaust pressure difference and the actual intake and exhaust pressure difference, and the second difference between the actual exhaust temperature and the preset exhaust temperature;

[0097] Based on the first difference, the second difference, and the preset opening degree, the actual opening degree of the third solenoid valve among multiple solenoid valves, excluding the first and second solenoid valves, is determined.

[0098] In this embodiment, the preset intake and exhaust pressure difference, preset exhaust temperature, and preset opening degree were all determined by relevant personnel through extensive experiments on the stable operation of the compressor. The preset intake and exhaust pressure difference is equal to the difference between the preset intake pressure and the preset exhaust pressure. The first difference is equal to the difference between the preset intake and exhaust pressure difference and the actual intake and exhaust pressure difference. The second difference is equal to the difference between the actual exhaust temperature and the preset exhaust temperature.

[0099] Specifically, determining the actual opening degree of the third solenoid valve (excluding the first and second solenoid valves) among multiple solenoid valves based on the first difference, the second difference, and the preset opening degree includes:

[0100] The first difference, the second difference, and the preset opening degree are input into the opening degree calculation formula to obtain the actual opening degree of the third solenoid valve. The opening degree calculation formula includes:

[0101] D = a*(ΔP0 - ΔP) + b*(T) 排 -T0)+D0

[0102] In the above formula, D represents the actual opening degree of the third solenoid valve, a represents the first preset coefficient, ΔP0-ΔP represents the first difference, ΔP0 represents the preset intake and exhaust pressure difference, ΔP represents the actual intake and exhaust pressure difference, b represents the second preset coefficient, and T 排 -T0 represents the second difference, T 排 T0 represents the actual exhaust temperature, D0 represents the preset exhaust temperature, and D0 represents the preset opening degree.

[0103] The control method for a compressor oil supply system provided in this embodiment further includes the following steps:

[0104] After the compressor is started, perform anomaly detection on each oil storage space in the compressor oil supply system;

[0105] When there is an abnormal oil storage space in the compressor oil supply system, the first ball valve at the outlet of the abnormal oil storage space is closed, and the second ball valve at the inlet of the abnormal oil storage space is also closed.

[0106] After the first ball valve and the second ball valve are closed, an abnormal prompt message corresponding to the abnormal oil storage space is generated;

[0107] An error message will be pushed to the target terminal.

[0108] The above-mentioned abnormal detection of each oil storage space in the compressor oil supply system specifically refers to detecting whether there is any blockage in each oil storage space of the compressor oil supply system. If all oil supply spaces in the compressor are normal, the oil supply to the compressor can continue to be dynamically adjusted. If an abnormal oil storage space exists in the compressor oil supply system, in order to ensure accurate and safe supply of refrigerant oil to the compressor, the second ball valve at the inlet and the first ball valve at the outlet of the abnormal oil storage space are first closed to cut off the flow of refrigerant oil to that abnormal oil storage space. After cutting off the flow of refrigerant oil to the abnormal oil storage space, an abnormality alert message for that abnormal oil storage space is pushed to the corresponding target terminal so that the relevant personnel at the target terminal can eliminate the abnormality. After the abnormality is eliminated, the process returns to the step of performing abnormal detection of each oil storage space in the compressor oil supply system after the compressor is started.

[0109] This embodiment provides a control method for a compressor oil supply system. By dividing the oil storage tank into multiple oil storage spaces and setting a corresponding solenoid valve for each oil storage space, the first solenoid valve is controlled to open simultaneously with the compressor, so that the first oil storage space corresponding to the first solenoid valve supplies oil to the compressor, thereby ensuring the basic oil supply during compressor operation. Furthermore, during compressor operation, the operating parameters of the compressor are detected to control each of the multiple solenoid valves except for the first solenoid valve, thereby realizing the dynamic adjustment of the compressor's oil supply. This ensures that the dynamically adjusted oil supply of the compressor can meet the compressor's refrigerant oil requirements, thereby reducing the impact on the performance of the air conditioning unit.

[0110] refer to Figure 5 , Figure 5 This is a schematic diagram of a control device for a compressor oil supply system provided in an embodiment of this application. The control device for a compressor oil supply system provided in this embodiment is applied to the compressor oil supply system described above. The compressor oil supply system includes an oil storage tank with multiple oil storage spaces and multiple solenoid valves. Each oil storage space corresponds one-to-one with a solenoid valve, and the outlet of each oil storage space is connected to the compressor through a corresponding solenoid valve. The control device for the compressor oil supply system includes a control module 501 and an acquisition module 502. The control module 501 is used to control the opening of a first solenoid valve among the multiple solenoid valves when the compressor is turned on, so that the first oil storage space corresponding to the first solenoid valve among the multiple oil storage spaces supplies oil to the compressor. The acquisition module 502 is used to acquire the operating parameters of the compressor after the compressor is turned on. The control module 501 is also used to control each of the multiple solenoid valves other than the first solenoid valve according to the operating parameters.

[0111] In this embodiment, the plurality of oil storage spaces also include a second oil storage space in addition to the first oil storage space, and the plurality of solenoid valves also include a second solenoid valve in addition to the first solenoid valve. The second solenoid valve corresponds to the second oil storage space, and the operating parameters include the actual exhaust temperature.

[0112] In this embodiment, the control module 501 is further configured to:

[0113] Determine the target temperature range to which the actual exhaust temperature belongs;

[0114] The on / off state of the second solenoid valve is controlled according to the target temperature range.

[0115] In this embodiment, the control module 501 is further configured to:

[0116] When the actual exhaust temperature is greater than or equal to the first preset temperature in the target temperature range, the second solenoid valve is controlled to be in the open state so that the second oil storage space supplies oil to the compressor.

[0117] When the actual exhaust temperature is less than or equal to the second preset temperature in the target temperature range, the switching state of the second solenoid valve is controlled to be closed so that the second oil storage space does not supply oil to the compressor and the second preset temperature is less than the first preset temperature.

[0118] When the target temperature range is defined as the actual exhaust temperature being greater than the second preset temperature and less than the first preset temperature, the on / off state of the second solenoid valve remains unchanged. In this embodiment, the oil storage tank among the plurality of oil storage spaces also includes a third oil storage space in addition to the first and second oil storage spaces, and the plurality of solenoid valves also includes a third solenoid valve in addition to the first and second solenoid valves. The third solenoid valve corresponds to the third oil storage space, and the operating parameters include the actual exhaust temperature, the actual intake pressure, and the actual exhaust pressure. In this embodiment, the control module is further used for:

[0119] Determine the actual intake and exhaust pressure difference between the actual intake pressure and the actual exhaust pressure;

[0120] The actual opening degree of the third solenoid valve is determined based on the actual intake and exhaust pressure difference and the actual exhaust temperature.

[0121] Control the opening degree of the third solenoid valve to the actual opening degree.

[0122] In this embodiment, the control module 501 is further configured to:

[0123] The preset suction and discharge pressure difference corresponding to the compressor, the preset discharge temperature corresponding to the compressor, and the preset opening degree corresponding to the third solenoid valve are determined. The preset suction and discharge pressure difference is used to characterize the suction and discharge pressure difference when the compressor is running stably. The preset discharge temperature is used to characterize the discharge temperature when the compressor is running stably. The preset opening degree is used to characterize the opening degree of the third solenoid valve when the compressor is running stably.

[0124] Determine a first difference between the preset intake and exhaust pressure difference and the actual intake and exhaust pressure difference, and a second difference between the actual exhaust temperature and the preset exhaust temperature;

[0125] The actual opening degree of the third solenoid valve is determined based on the first difference, the second difference, and the preset opening degree.

[0126] In this embodiment, the control module 501 is further configured to:

[0127] The first difference, the second difference, and the preset opening degree are input into the opening degree calculation formula to obtain the actual opening degree of the third solenoid valve. The opening degree calculation formula includes:

[0128] D = a*(ΔP0 - ΔP) + b*(T) 排 -T0)+D0

[0129] In the above formula, D represents the actual opening degree of the third solenoid valve, a represents the first preset coefficient, ΔP0-ΔP represents the first difference, ΔP0 represents the preset intake and exhaust pressure difference, ΔP represents the actual intake and exhaust pressure difference, b represents the second preset coefficient, and T 排 -T0 represents the second difference, T 排 T0 represents the actual exhaust temperature, D0 represents the preset exhaust temperature, and D0 represents the preset opening degree.

[0130] In this embodiment, a first ball valve is provided at the outlet of each oil storage space, and a second ball valve is provided at the inlet of each oil storage space.

[0131] This embodiment provides a control device for a compressor oil supply system, which further includes a detection module, a generation module, and a push module. The detection module is used to perform anomaly detection on each of the oil storage spaces in the compressor oil supply system after the compressor is started.

[0132] The control module 501 is further configured to: when there is an abnormal oil storage space in the compressor oil supply system, control the first ball valve at the outlet of the abnormal oil storage space to close, and control the second ball valve at the inlet of the abnormal oil storage space to close.

[0133] The generation module is used to generate abnormal fault prompt information corresponding to the oil storage space after the first ball valve and the second ball valve are closed.

[0134] The push module is used to push the abnormal fault prompt information to the target terminal.

[0135] This embodiment provides a control device for a compressor oil supply system. By dividing the oil storage tank into multiple oil storage spaces and setting a corresponding solenoid valve for each oil storage space, the device controls the opening of the first solenoid valve when the compressor is turned on, so that the first oil storage space corresponding to the first solenoid valve supplies oil to the compressor, thereby ensuring the basic oil supply during compressor operation. Furthermore, during compressor operation, the device detects the compressor's operating parameters to control each of the multiple solenoid valves except for the first solenoid valve, thereby achieving dynamic adjustment of the compressor's oil supply. This ensures that the dynamically adjusted oil supply of the compressor meets the compressor's refrigerant oil requirements, thus reducing the impact on the performance of the air conditioning unit.

[0136] Figure 6 This is a schematic diagram of another compressor oil supply system provided in an embodiment of the present invention. Figure 6 The compressor oil supply system 600 shown includes: at least one processor 601, a memory 602, at least one network interface 604, other user interfaces 603, an oil storage tank with multiple oil storage spaces, and multiple solenoid valves. Each oil storage space corresponds one-to-one with a solenoid valve, and the outlet of each oil storage space is connected to the compressor via a corresponding solenoid valve. The processor 601 is connected to the multiple solenoid valves and the memory 602. The various components in the compressor oil supply system 600 are coupled together via a bus system 605. It is understood that the bus system 605 is used to realize communication between these components. In addition to a data bus, the bus system 605 also includes a power bus, a control bus, and a status signal bus. However, for clarity, ... Figure 6 The general designated all buses as Bus System 605.

[0137] The user interface 603 may include a display, keyboard, or clicking device (e.g., mouse, trackball, touchpad, or touchscreen).

[0138] It is understood that the memory 602 in this embodiment of the invention can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced Synchronous DRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 602 described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0139] In some implementations, memory 602 stores elements, executable units or data structures, or subsets thereof, or extended sets thereof: operating system 6021 and application program 6022.

[0140] The operating system 6021 includes various system programs, such as the framework layer, core library layer, and driver layer, used to implement various basic business functions and handle hardware-based tasks. The application program 6022 includes various applications, such as a media player and a browser, used to implement various application functions. The program implementing the method of this embodiment can be included in the application program 6022.

[0141] In this embodiment of the invention, by calling the program or instructions stored in the memory 602, specifically the program or instructions stored in the application program 6022, the processor 601 is used to execute the method steps provided in each method embodiment, such as: when the compressor is turned on, controlling the first solenoid valve among the multiple solenoid valves to open, so that the first oil storage space corresponding to the first solenoid valve among the multiple oil storage spaces supplies oil to the compressor; after the compressor is turned on, acquiring the operating parameters of the compressor; and controlling each solenoid valve among the multiple solenoid valves except the first solenoid valve according to the operating parameters.

[0142] The methods disclosed in the above embodiments of the present invention can be applied to processor 601, or implemented by processor 601. Processor 601 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware in processor 601 or by instructions in the form of software. The processor 601 may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present invention. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of the present invention can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software units in the decoding processor. The software units may be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory 602. Processor 601 reads the information in memory 602 and, in conjunction with its hardware, completes the steps of the above method.

[0143] It is understood that the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described herein, or combinations thereof.

[0144] For software implementation, the techniques described herein can be implemented by units that perform the functions described herein. The software code can be stored in memory and executed by a processor. The memory can be implemented in the processor or external to the processor.

[0145] The compressor oil supply system provided in this embodiment can be as follows: Figure 6 The compressor oil supply system shown can perform the following functions: Figure 1 and Figure 2 All steps of the control method for the oil supply system of the compressor are then implemented to achieve... Figure 1 and Figure 2 For details on the technical effects of the control method for the compressor oil supply system shown, please refer to [link / reference needed]. Figure 1 and Figure 2 The relevant descriptions are presented concisely and will not be elaborated upon here.

[0146] refer to Figure 7 This application embodiment also provides an air conditioning unit 700, which includes the compressor oil supply system 600 as described above.

[0147] This application also provides a storage medium (computer-readable storage medium). This storage medium stores one or more programs. The storage medium may include volatile memory, such as random access memory; it may also include non-volatile memory, such as read-only memory, flash memory, hard disk, or solid-state drive; and it may also include combinations of the above types of memory.

[0148] When one or more programs in the storage medium can be executed by one or more processors to implement the control method of the compressor oil supply system executed on the control device side of the compressor oil supply system.

[0149] The processor is used to execute the control program of the compressor oil supply system stored in the memory to implement the following steps of the compressor oil supply system control method executed on the control device side of the compressor oil supply system: when the compressor is turned on, the first solenoid valve among the multiple solenoid valves is controlled to open, so that the first oil storage space corresponding to the first solenoid valve among the multiple oil storage spaces supplies oil to the compressor; after the compressor is turned on, the operating parameters of the compressor are acquired; according to the operating parameters, each of the multiple solenoid valves except the first solenoid valve is controlled.

[0150] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0151] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented in hardware, a software module executed by a processor, or a combination of both. The software module can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0152] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A control method of an oil supply system of a compressor, characterized by, The compressor oil supply system includes an oil storage tank with multiple oil storage spaces and multiple solenoid valves. Each oil storage space corresponds one-to-one with a solenoid valve. The outlet of each oil storage space is connected to the compressor via the corresponding solenoid valve. The oil storage spaces are not interconnected. The method includes: When the compressor is turned on, the first solenoid valve among the plurality of solenoid valves is opened, so that the first oil storage space corresponding to the first solenoid valve among the plurality of oil storage spaces supplies oil to the compressor. After the compressor is turned on, the operating parameters of the compressor are obtained, including the actual discharge temperature, actual discharge pressure and actual suction pressure of the compressor. According to the operating parameters, each of the multiple solenoid valves, except for the first solenoid valve, is controlled; The step of controlling each of the multiple solenoid valves, excluding the first solenoid valve, according to the operating parameters includes: Based on the actual exhaust temperature, actual exhaust pressure, and actual intake pressure, determine the current temperature operating condition and the current pressure operating condition of the compressor. Based on the current temperature and pressure conditions, control is applied to each of the multiple solenoid valves except for the first solenoid valve.

2. The method of claim 1, wherein, The plurality of oil storage spaces also include a second oil storage space in addition to the first oil storage space, and the plurality of solenoid valves also include a second solenoid valve in addition to the first solenoid valve, the second solenoid valve corresponding to the second oil storage space; The step of controlling each of the plurality of solenoid valves, excluding the first solenoid valve, according to the operating parameters includes: Determine the target temperature range to which the actual exhaust temperature belongs; The on / off state of the second solenoid valve is controlled according to the target temperature range.

3. The method according to claim 2, characterized in that, The step of controlling the on / off state of the second solenoid valve according to the target temperature range includes: When the actual exhaust temperature is greater than or equal to the first preset temperature in the target temperature range, the second solenoid valve is controlled to be in the open state so that the second oil storage space supplies oil to the compressor. When the actual exhaust temperature is less than or equal to the second preset temperature in the target temperature range, the switching state of the second solenoid valve is controlled to be closed so that the second oil storage space does not supply oil to the compressor and the second preset temperature is less than the first preset temperature. When the actual exhaust temperature is greater than the second preset temperature but less than the first preset temperature within the target temperature range, the switching state of the second solenoid valve remains unchanged.

4. The method according to claim 2, characterized in that, The plurality of oil storage spaces also include a third oil storage space in addition to the first oil storage space and the second oil storage space, and the plurality of solenoid valves also include a third solenoid valve in addition to the first solenoid valve and the second solenoid valve, the third solenoid valve corresponding to the third oil storage space; The step of controlling each of the plurality of solenoid valves, excluding the first solenoid valve, according to the operating parameters includes: Determine the actual intake and exhaust pressure difference between the actual intake pressure and the actual exhaust pressure; The actual opening degree of the third solenoid valve is determined based on the actual intake and exhaust pressure difference and the actual exhaust temperature. Control the opening degree of the third solenoid valve to the actual opening degree.

5. The method according to claim 4, characterized in that, The step of determining the actual opening degree of the third solenoid valve based on the actual intake and exhaust pressure difference and the actual exhaust temperature includes: The preset suction and discharge pressure difference corresponding to the compressor, the preset discharge temperature corresponding to the compressor, and the preset opening degree corresponding to the third solenoid valve are determined. The preset suction and discharge pressure difference is used to characterize the suction and discharge pressure difference when the compressor is running stably. The preset discharge temperature is used to characterize the discharge temperature when the compressor is running stably. The preset opening degree is used to characterize the opening degree of the third solenoid valve when the compressor is running stably. Determine a first difference between the preset intake and exhaust pressure difference and the actual intake and exhaust pressure difference, and a second difference between the actual exhaust temperature and the preset exhaust temperature; The actual opening degree of the third solenoid valve is determined based on the first difference, the second difference, and the preset opening degree.

6. The method according to claim 5, characterized in that, Determining the actual opening degree of the third solenoid valve based on the first difference, the second difference, and the preset opening degree includes: The first difference, the second difference, and the preset opening degree are input into the opening degree calculation formula to obtain the actual opening degree of the third solenoid valve. The opening degree calculation formula includes: In the above formula, This indicates the actual opening degree of the third solenoid valve. This represents the first preset coefficient. Indicates the first difference. Indicates the preset intake and exhaust pressure difference. This indicates the actual intake and exhaust pressure difference. This represents the second preset coefficient. This represents the second difference. Indicates the actual exhaust temperature. Indicates the preset exhaust temperature. This indicates the preset opening degree.

7. The method according to claim 1, characterized in that, A first ball valve is provided at the outlet of each of the oil storage spaces, and a second ball valve is provided at the inlet of each of the oil storage spaces; The method further includes: After the compressor is turned on, anomaly detection is performed on each of the oil storage spaces in the compressor oil supply system; When an abnormal oil storage space exists in the compressor oil supply system, the first ball valve at the outlet of the abnormal oil storage space is closed, and the second ball valve at the inlet of the abnormal oil storage space is also closed. After the first ball valve and the second ball valve are closed, an abnormal prompt message corresponding to the abnormal oil storage space is generated; The error message is pushed to the target terminal.

8. A control device for a compressor oil supply system, characterized in that, The compressor oil supply system includes an oil storage tank with multiple oil storage spaces and multiple solenoid valves. Each oil storage space corresponds one-to-one with a solenoid valve. The outlet of each oil storage space is connected to the compressor via the corresponding solenoid valve. The oil storage spaces are not interconnected. The device includes: The control module is used to control the first solenoid valve among the plurality of solenoid valves to open when the compressor is turned on, so that the first oil storage space corresponding to the first solenoid valve among the plurality of oil storage spaces supplies oil to the compressor. The acquisition module is used to acquire the operating parameters of the compressor after the compressor is turned on. The operating parameters include the actual discharge temperature, actual discharge pressure and actual suction pressure of the compressor. The control module is also used to control each of the multiple solenoid valves except the first solenoid valve according to the operating parameters. The control module is further configured to determine the current temperature condition and the current pressure condition of the compressor based on the actual exhaust temperature, actual exhaust pressure and actual intake pressure. Based on the current temperature and pressure conditions, control is applied to each of the multiple solenoid valves except for the first solenoid valve.

9. A compressor oil supply system, characterized in that, include: The system comprises an oil storage tank with multiple oil storage spaces, multiple solenoid valves, a processor, and a memory. Each of the multiple oil storage spaces corresponds one-to-one with a multiple solenoid valve. The outlet of each oil storage space is connected to a compressor through the corresponding solenoid valve. The oil storage spaces are not interconnected. The processor is connected to the multiple solenoid valves and the memory. The processor is used to execute the control program of the compressor oil supply system stored in the memory to implement the control method of the compressor oil supply system according to any one of claims 1 to 7.

10. An air conditioning unit, characterized in that, Includes the compressor oil supply system as described in claim 9.

11. A storage medium, characterized in that, The storage medium stores one or more programs, which can be executed by one or more processors to implement the control method of the compressor oil supply system according to any one of claims 1 to 7.

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