Air conditioning system, cleaning method, and computer-readable storage medium

Abstract

This invention relates to the field of air conditioning technology, specifically to an air conditioning system, a cleaning method, and a computer-readable storage medium. It includes: a compressor with an exhaust pipe; a gas-liquid separator with an outlet pipe, the outlet pipe having an oil return hole and a vent on the opposite side of the oil return hole; a vent pipe connecting the exhaust pipe and the vent; and a vent valve located on the vent pipe for controlling the opening and closing of the vent pipe. The oil return hole in the outlet pipe allows for the recovery of lubricating oil and its return to the air conditioning system, ensuring sufficient lubricating oil for the compressor, preventing damage due to insufficient lubrication, and extending the compressor's service life. The vent on the opposite side of the oil return hole, connected to the exhaust pipe by the vent pipe, allows high-pressure gas generated by the compressor to be introduced into the outlet pipe through the vent pipe. Furthermore, because the vent is located opposite the oil return hole, the high-pressure gas is sprayed from the vent towards the oil return hole, effectively flushing away impurities adhering to the filter screen.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, specifically to an air conditioning system, a cleaning method, and a computer-readable storage medium. Background Technology

[0002] Air conditioning systems have gas-liquid separators. The function of the gas-liquid separator is to separate the gas and liquid components of the refrigerant to prevent liquid (lubricating oil or refrigerant) from liquid-slugging the compressor and to ensure the safe and normal operation of the compressor.

[0003] The gas-liquid separator has an oil return port, through which lubricating oil is recovered and returned to the air conditioning system, ensuring the compressor has sufficient lubricating oil. A filter screen is installed over the oil return port to filter impurities and prevent them from entering directly through the port. These impurities include metal powder generated from compressor mechanical wear, as well as oxide scale or welding slag remaining in the system due to poor welding. Impurities in the gas-liquid separator can easily flow with the gaseous refrigerant or lubricating oil, increasing the risk of filter clogging. Clogging the filter causes poor oil return from the compressor, leading to increased compressor operating temperature, increased power consumption, and increased wear. Prolonged operation can cause the compressor to be damaged due to insufficient oil, reducing its lifespan.

[0004] Therefore, how to provide an air conditioning system and its cleaning method that can prevent impurities from clogging the oil return filter and extend the service life of the compressor has become an urgent technical problem to be solved. Summary of the Invention

[0005] To address the above technical problems, the present invention provides an air conditioning system and its cleaning method, comprising: a compressor, including an exhaust pipe; a gas-liquid separator, including an exhaust pipe, the exhaust pipe having an oil return hole and a vent on the opposite side of the oil return hole; a vent pipe connecting the exhaust pipe and the vent; and a vent valve disposed on the vent pipe for controlling the opening and closing of the vent pipe.

[0006] According to the above technical solution, the exhaust pipe is equipped with an oil return hole, which can recover lubricating oil and send it back to the air conditioning system, ensuring that the compressor has sufficient lubricating oil and preventing damage due to insufficient lubrication, thus extending the compressor's service life. A vent is located on the opposite side of the oil return hole, and a vent pipe connects the exhaust pipe and the vent, allowing high-pressure gas generated by the compressor to be introduced into the exhaust pipe through the vent pipe. Because the vent is located on the opposite side of the oil return hole, the high-pressure gas is sprayed from the vent towards the oil return hole, effectively flushing away impurities adhering to the filter screen. A vent valve is installed on the vent pipe to control its opening and closing. The vent valve is opened when cleaning the oil return hole is required; it is closed when cleaning is not needed. Controlling the vent valve controls the cleaning process of the oil return hole.

[0007] Preferably, the gas-liquid separator includes a magnetic suction unit disposed at the bottom of the gas-liquid separator.

[0008] According to the above technical solution, the magnetic adsorption part can adsorb metal impurities in the gas-liquid separator, reducing the risk of lubricating oil carrying impurities and clogging the oil return hole.

[0009] Preferably, the air conditioning system further includes: a first temperature sensor for detecting the outdoor ambient temperature T4; a second temperature sensor for detecting the compressor exhaust temperature T5; both the first and second temperature sensors are electrically connected to the vent valve.

[0010] According to the above technical solution, the detection signals from the first and second temperature sensors can help determine whether the air conditioning system and compressor are in a stable state, thereby avoiding the need to clean the oil return hole when the operating conditions are unstable. Both the first and second temperature sensors are electrically connected to the vent valve, enabling the vent valve to respond to the detection signals from the first and second temperature sensors and adjust its opening and closing, which is beneficial for improving the level of automation.

[0011] Preferably, the vent valve is a solenoid valve or an electronic expansion valve.

[0012] According to the above technical solutions, both solenoid valves and electronic expansion valves are controlled by electrical signals, facilitating remote operation, adjustment, and automated control. Simultaneously, both solenoid valves and electronic expansion valves provide precise flow and pressure control, allowing for accurate adjustment as needed. Furthermore, solenoid valves and electronic expansion valves offer the advantages of fast response speed, enabling real-time flow and pressure regulation, and also boast a long service life and high reliability.

[0013] This invention also provides a cleaning method for an air conditioning system, applied to the air conditioning system in the above-mentioned technical solution, comprising: step S10, selecting a manual cleaning mode or an automatic cleaning mode; if the automatic cleaning mode is selected, proceeding to step S20; if the manual cleaning mode is selected, proceeding to step S21; step S20, if the cumulative running time of the compressor is ≥ a first predetermined time t1, proceeding to step S21; step S21, detecting and calculating the temperature difference ΔT4 between the outdoor ambient temperature T4 and the temperature difference ΔT5 between the compressor exhaust temperature T5; step S30, e is the first predetermined temperature; if ΔT4 ≤ e℃, proceeding to step S40; step S40, a is the second predetermined temperature; if ΔT5 ≤ a℃, controlling the vent valve to open.

[0014] According to the above technical solution, when the compressor's cumulative running time reaches the first specified time t1, it indicates that the filter screen of the gas-liquid separator has accumulated a certain amount of impurities and needs to be cleaned to achieve the effect of periodic cleaning. △T4>e℃ indicates that the outdoor ambient temperature T4 varies significantly, and the operating conditions are unstable. Since cleaning the oil return hole will affect the oil return, in order to ensure stable operating conditions and reduce the impact on the compressor, the oil return hole is not cleaned when △T4>e℃, which helps extend the compressor's service life. If △T5>a℃, it indicates that the compressor's discharge temperature T5 is unstable, further indicating that the compressor has not yet stabilized. Therefore, when △T5>a℃, not opening the vent valve to flush the filter screen helps ensure the oil return effect, thereby extending the compressor's service life.

[0015] Preferably, the method further includes step S50, whereby the vent valve is closed when the opening time of the vent valve reaches a second predetermined time t2.

[0016] According to the above technical solution, the cleaning time of the oil return hole can be controlled to avoid over-cleaning.

[0017] Preferably, the method further includes: step S60, after step S50 is completed, the cumulative running time of the compressor is reset to zero, and the cumulative running time of the compressor is recorded again.

[0018] According to the above technical solution, after the oil return hole is cleaned, the compressor's cumulative running time is reset to zero, and the compressor's cumulative running time is recorded again to calculate the start time of the next automatic cleaning mode, thereby realizing the cycle of the automatic cleaning mode.

[0019] Preferably, the method further includes: step S70, detecting whether the continuous time for which the outdoor ambient temperature T4 is lower than the third specified temperature m is greater than or equal to the third specified time t3; if so, proceeding to step S80; step S80, opening the vent valve and starting the heating gas-liquid separator mode; step S90, if the opening time of the vent valve is greater than or equal to the fourth specified time t4, proceeding to step S100; step S100, exiting the heating gas-liquid separator mode and closing the vent valve; step S110, detecting whether the continuous time for which the outdoor ambient temperature T4 is lower than the third specified temperature m is greater than or equal to the fifth specified time t5; if so, returning to step S80; otherwise, proceeding to step S120; step S120, detecting whether the outdoor ambient temperature T4 is higher than the fourth specified temperature p; if so, proceeding to step S130; step S130, keeping the vent valve closed and exiting the heating gas-liquid separator mode.

[0020] Preferably, the air conditioning system also has a dial switch, in which the user selects to enter manual cleaning mode or automatic cleaning mode by operating the dial switch in step S10.

[0021] Based on the above technical solution, the DIP switch design is simple, easy to understand, and convenient to operate. By tossing the switches on the DIP switch, manual or automatic cleaning modes can be easily selected without cumbersome menu navigation or complex operations. Furthermore, compared to some electronic touchscreens or remote controls, operation via the DIP switch is more stable and reliable.

[0022] The present invention also provides a computer-readable storage medium storing processor-readable instructions, wherein one or more processors execute the cleaning method of any of the above-described technical solutions of the air conditioning system by running the processor-readable instructions. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the air conditioning system according to the first embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the gas-liquid separator according to the first embodiment of the present invention;

[0025] Figure 3 This is a flowchart of the cleaning method for an air conditioning system according to the second embodiment of the present invention;

[0026] Figure 4 This is a dial switch according to the second embodiment of the present invention;

[0027] Figure 5 This is a flowchart of a cleaning method for an air conditioning system according to a third embodiment of the present invention.

[0028] Reference numerals: 1 Compressor; 2 Gas-liquid separator; 3 Outlet pipe; 4 Oil return hole; 5 Vent port; 6 Vent pipe; 7 Vent valve; 8 Magnetic suction unit; 9 Exhaust pipe; 10 Filter screen; 11 Four-way valve; 12 Dial switch plate. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] First Implementation Method

[0031] Figure 1 This is a schematic diagram of the air conditioning system according to the first embodiment of the present invention. Figure 1 As shown, this embodiment provides an air conditioning system including a compressor 1, which has an exhaust pipe 9. During the operation of the air conditioning system, high-pressure gaseous refrigerant generated by the compressor 1 is discharged from the exhaust pipe 9.

[0032] Figure 2 This is a schematic diagram of the gas-liquid separator 2 according to the first embodiment of the present invention. Figure 1 , Figure 2 As shown, the air conditioning system also includes a gas-liquid separator 2, which has an outlet pipe 3. The outlet pipe 3 has an oil return hole 4 located at the bottom of the gas-liquid separator 2. This oil return hole 4 recovers lubricating oil and returns it to the air conditioning system, ensuring that the compressor 1 has sufficient lubricating oil. This prevents damage to the compressor 1 due to insufficient lubricating oil and helps extend the service life of the compressor 1. The oil return hole 4 is covered with a filter screen 10, which prevents impurities in the gas-liquid separator 2 from entering the outlet pipe 3 through the oil return hole 4.

[0033] In this embodiment, the exhaust pipe 9 of the compressor 1 is connected to the four-way valve 11. A bypass pipe, namely the vent pipe 6, is led out from the main pipe connecting the exhaust pipe 9 and the four-way valve 11. A vent port 5 is provided on the opposite side of the oil return hole 4. The vent pipe 6 connects the exhaust pipe 9 and the vent port 5, allowing the high-pressure gas generated by the compressor 1 to be introduced into the outlet pipe 3 through the vent pipe 6. Since the vent port 5 is located on the opposite side of the oil return hole 4, the high-pressure gas is sprayed from the vent port 5 towards the oil return hole 4, effectively removing impurities attached to the oil return hole 4. Removing the impurities attached to the oil return hole 4 reduces oil return resistance, ensuring smooth oil return and thus extending the service life of the compressor 1.

[0034] In this embodiment, the vent pipe 6 is equipped with a vent valve 7 to control the opening and closing of the vent pipe 6. When cleaning of the oil return hole 4 is required, the vent valve 7 is opened; when cleaning is not required, the vent valve 7 is closed. By controlling the vent valve 7, the cleaning process of the oil return hole 4 is controlled.

[0035] In addition to using the vent valve 7 to control the opening and closing of the vent pipe 6, different cleaning intensities can also be achieved for the oil return hole 4 by adjusting the opening degree of the vent valve 7.

[0036] Furthermore, in this embodiment, the gas-liquid separator 2 includes a magnetic suction part 8, which is disposed at the bottom of the gas-liquid separator 2. The magnetic suction part 8 can adsorb metallic impurities inside the gas-liquid separator 2, reducing the risk of lubricating oil carrying impurities and clogging the oil return hole 4.

[0037] In this embodiment, the magnetic attraction part 8 is a magnet. In other embodiments of the present invention, the magnetic attraction part 8 is not limited to a magnet, and may also be an electromagnet, for example, without specific limitation here.

[0038] Furthermore, in this embodiment, the air conditioning system also includes a first temperature sensor (not shown) and a second temperature sensor (not shown). The first temperature sensor is used to detect the outdoor ambient temperature T4, and the second temperature sensor is used to detect the compressor discharge temperature T5. The detection signals from the first and second temperature sensors can help determine whether the air conditioning system and compressor 1 are in a stable state, thereby avoiding the need to clean the oil return hole 4 when the operating conditions are unstable. Both the first and second temperature sensors are electrically connected to the vent valve 7, enabling the vent valve 7 to respond to the detection signals from the first and second temperature sensors and adjust its opening and closing, which is beneficial for improving the degree of automation.

[0039] In this embodiment, the vent valve 7 is either a solenoid valve or an electronic expansion valve. Both solenoid valves and electronic expansion valves are controlled by electrical signals, facilitating remote operation, adjustment, and automated control. Furthermore, both solenoid valves and electronic expansion valves provide precise flow and pressure control, allowing for accurate adjustment as needed. In addition, solenoid valves and electronic expansion valves offer the advantages of fast response speed, enabling real-time flow and pressure regulation, and also have a long service life and high reliability.

[0040] Second Implementation Method

[0041] Figure 3 This is a flowchart of a cleaning method for an air conditioning system according to a second embodiment of the present invention. Figure 3 As shown, this embodiment provides a cleaning method for an air conditioning system, applied to the air conditioning system provided in the first embodiment, including:

[0042] Step S10: Select manual cleaning mode or automatic cleaning mode. If automatic cleaning mode is selected, proceed to step S20; if manual cleaning mode is selected, proceed to step S21.

[0043] Step S20: If the cumulative running time of compressor 1 is greater than or equal to the first predetermined time t1, then proceed to step S21. When the cumulative running time of compressor 1 reaches the first predetermined time t1, it indicates that the filter screen 10 of gas-liquid separator 2 has accumulated a certain amount of impurities and needs to be cleaned, thereby achieving the effect of periodic cleaning.

[0044] In step S21, within a specified time interval Δt, the temperature difference between the outdoor ambient temperature T4 and the compressor exhaust temperature T5 is ΔT4, where e is the first specified temperature and a is the second specified temperature. Here, ΔT4 and ΔT5 refer to the absolute values ​​of the maximum temperature difference changes between the outdoor ambient temperature T4 and the compressor exhaust temperature T5 within the specified time interval Δt after determining in step S20 that the cumulative operating time of compressor 1 is ≥ the first specified time t1, and after continuously monitoring the outdoor ambient temperature T4 and the compressor exhaust temperature T5 within the specified time interval Δt.

[0045] In step S30, if △T4≤e℃, proceed to step S40 for further judgment; if △T4>e℃, return to step S21 to continue judgment.

[0046] △T4>e℃ indicates that the outdoor ambient temperature T4 varies significantly, resulting in unstable operating conditions. Since cleaning the oil return hole 4 will affect the oil return, in order to ensure stable operating conditions and reduce the impact on compressor 1, the oil return hole 4 will not be cleaned when △T4>e℃, which will help extend the service life of compressor 1.

[0047] In step S40, if △T5≤a℃, control the vent valve 7 to open; if △T5>a℃, return to step S40 to continue the judgment.

[0048] If ΔT5 > a℃, it indicates that the compressor discharge temperature T5 is unstable, suggesting that compressor 1 has not yet stabilized. For example, during initial startup of compressor 1, when the outdoor ambient temperature T4 is low, the piping is long, or there is a significant height difference between the indoor and outdoor units, oil return may be difficult. Simultaneously, the lubricating oil has a relatively high viscosity, and a large amount of lubricating oil in compressor 1 is carried away with the refrigerant during startup, affecting the normal operation of compressor 1. Therefore, when ΔT5 > a℃, not opening the vent valve 7 to flush the filter helps ensure effective oil return, thereby extending the service life of compressor 1.

[0049] The air conditioning system cleaning method also includes step S50, which determines whether the opening time of the vent valve 7 has reached a second predetermined time t2. If the opening time of the vent valve 7 reaches the second predetermined time t2, the process proceeds to step S51, and the vent valve 7 is closed; if the opening time of the vent valve 7 has not reached the second predetermined time t2, the process returns to step S50 to continue the determination. This allows control over the cleaning time of the oil return hole 4, preventing over-cleaning.

[0050] In this embodiment, the air conditioning system cleaning method further includes step S60, where the air vent valve 7 is closed before proceeding to step S60. In step S60, the cumulative running time of compressor 1 is reset to zero, and the cumulative running time of compressor 1 is recorded again. The newly recorded cumulative running time of compressor 1 is used to calculate the start time of the next automatic cleaning mode, thereby realizing the cycle of the automatic cleaning mode.

[0051] In this embodiment, the first specified temperature e is 1.5℃, and the second specified temperature a is 3℃. Experimental results show that when △T4≤1.5℃ and △T5≤3℃, the impact on the oil return hole 4 can be minimized while cleaning, thus balancing the cleaning effect with the service life of the compressor 1. In other embodiments of the invention, the first and second specified temperatures are not limited to the above values ​​and are not specifically limited here.

[0052] Figure 4 This is the dial switch 12 according to the second embodiment of the present invention. For example... Figure 4 As shown, in this embodiment, the air conditioning system further includes a dial switch 12. In step S10, the user selects between manual and automatic cleaning modes by dialing the dial switch 12. For example, setting the switch marked 1 to ON activates manual cleaning mode, while OFF activates periodic cleaning mode. The dial switch 12 is simple, easy to understand, and convenient to operate. By toggling the switches on the dial switch 12, the user can easily select between manual and automatic cleaning modes without cumbersome menu navigation or complex operations. Furthermore, compared to some electronic touchscreens or remote controls, operation on the dial switch 12 is more stable and reliable.

[0053] In other embodiments of the present invention, the setting is not limited to using a dial switch on the dial switch 12, and other methods can also be used, such as setting via a small board. No specific limitation is made here.

[0054] The following are application scenarios for the air conditioning system cleaning method provided in this embodiment:

[0055] After setting the automatic cleaning mode on the dial switch 12, the air conditioning system enters the automatic cleaning mode. The first specified time is 3000 hours. When the cumulative running time of compressor 1 is ≥3000 hours, preparations begin for cleaning the oil return hole 4.

[0056] After compressor 1 has accumulated 3000 hours of operation, at a specified time interval Δt of 30 minutes, the temperature difference ΔT4 between the outdoor ambient temperature T4 and the compressor exhaust temperature T5 within these 30 minutes is detected and calculated. If ΔT4 ≤ 1.5℃, the ambient temperature change is considered small, and subsequent determination of ΔT5 is made. If ΔT5 ≤ 3℃, the solenoid valve is opened, and the high-pressure gas discharged from compressor 1 is used to continuously flush and clean the filter screen 10 for 5 minutes.

[0057] Record the opening time of the solenoid valve. After 5 minutes, the solenoid valve closes, thus stopping the flushing of the filter screen 10. After the solenoid valve closes, the cumulative running time of compressor 1 is reset to zero, and the cumulative running time of compressor 1 is recorded again to complete the cycle.

[0058] Third Implementation Method

[0059] Figure 5 This is a flowchart of a cleaning method for an air conditioning system according to a third embodiment of the present invention. Figure 5 As shown, the cleaning method for the air conditioning system includes: step S70, detecting whether the continuous time during which the outdoor ambient temperature T4 is lower than the third specified temperature m is greater than or equal to the third specified time t3, and if so, proceeding to step S80.

[0060] Step S80: Open the vent valve 7 to start the heating gas-liquid separator mode.

[0061] In the heated gas-liquid separator mode, the high-temperature exhaust gas is directed to the gas-liquid separator 2. The outlet of the vent pipe 6 of the heated gas-liquid separator 2 is located behind the filter screen 10. Due to its special location, the heated gas-liquid separator mode should only be activated after most of the lubricating oil has returned to the compressor chamber after the compressor 1 has started stably. At the same time, during the operation of the air conditioning system, intermittent heating is required; it cannot be continuously turned on, as this would affect the oil return during operation.

[0062] In step S90, if the opening time of the vent valve 7 is greater than or equal to the fourth specified time t4, then proceed to step S100.

[0063] Step S100: Exit the heating gas-liquid separator mode and close the vent valve 7.

[0064] Step S110: Detect whether the continuous time for which the outdoor ambient temperature T4 is lower than the third specified temperature m is ≥ the fifth specified time t5. If yes, return to step S80 and enter the heating gas-liquid separator mode, and open the vent valve 7; otherwise, proceed to step S120.

[0065] Step S120: When the outdoor ambient temperature T4 is detected to be higher than the fourth specified temperature p or the compressor 1 stops, proceed to step S130.

[0066] In step S130, the vent valve 7 remains closed, exiting the heating gas-liquid separator mode, thus completing one cycle.

[0067] The following is the application scenario: After the air conditioning system starts, if T4 is detected to be below -10℃ for 15 minutes, the heating gas-liquid separator mode is activated. High-temperature exhaust gas is directed to the gas-liquid separator, heating gas-liquid separator 2. The outlet of the vent pipe 6 is located behind the filter screen 10. Due to its specific location, the heating gas-liquid separator mode should only be activated after compressor 1 has started stably and most of the lubricating oil has returned to the compressor chamber. Simultaneously, during air conditioning system operation, intermittent heating is required; continuous operation would affect oil return. The heating gas-liquid separator mode is set for 10 minutes. After completion, the solenoid valve or electronic expansion valve closes. If T4 is detected to be below -10℃ for 20 minutes, the solenoid valve or electronic expansion valve opens. When T4 is detected to be above -5℃ or compressor 1 stops, the heating gas-liquid separator mode exits, thus completing one cycle.

[0068] This embodiment also provides a computer-readable storage medium (not shown) storing processor (not shown) readable instructions, by which one or more processors execute the above-described air conditioning system cleaning method by running the processor readable instructions.

[0069] Those skilled in the art will understand that specific technical features in various embodiments can be adaptively split or combined. Such splitting or combining of specific technical features will not cause the technical solution to deviate from the principles of the present invention; therefore, the technical solutions after splitting or combining will all fall within the protection scope of the present invention. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0070] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An air conditioning system, characterized in that, include: Compressor, including the exhaust pipe; A gas-liquid separator includes a gas outlet pipe, the gas outlet pipe having an oil return hole, and an air vent being provided on the opposite side of the oil return hole. A vent pipe connects the exhaust pipe to the vent. A vent valve is installed in the vent pipe to control the opening and closing of the vent pipe.

2. The air conditioning system as described in claim 1, characterized in that, The gas-liquid separator includes: A magnetic suction unit is located at the bottom of the gas-liquid separator.

3. The air conditioning system as described in claim 1, characterized in that, Also includes: The first temperature sensor is used to detect the outdoor ambient temperature T4; The second temperature sensor is used to detect the compressor discharge temperature T5; Both the first temperature sensor and the second temperature sensor are electrically connected to the vent valve.

4. The air conditioning system as described in any one of claims 1-3, characterized in that, The vent valve is a solenoid valve or an electronic expansion valve.

5. A cleaning method for an air conditioning system, applied to the air conditioning system as described in claim 3, characterized in that, include: Step S10: Select manual cleaning mode or automatic cleaning mode. If automatic cleaning mode is selected, proceed to step S20. If manual cleaning mode is selected, proceed to step S21. Step S20: If the cumulative running time of the compressor is ≥ the first specified time t1, then proceed to step S21; Step S21: Detect and calculate the temperature difference ΔT4 between the outdoor ambient temperature T4 and the temperature difference ΔT5 between the compressor exhaust temperature T5; In step S30, e is the first specified temperature. If ΔT4≤e℃, then proceed to step S40. Step S40, a is the second specified temperature. If △T5≤a℃, control the vent valve to open.

6. The cleaning method for an air conditioning system as described in claim 5, characterized in that, Also includes: Step S50: When the opening time of the vent valve reaches the second predetermined time t2, the vent valve is closed.

7. The cleaning method for an air conditioning system as described in claim 6, characterized in that, Also includes: After steps S60 and S50 are completed, the cumulative running time of the compressor is reset to zero, and the cumulative running time of the compressor is recorded again.

8. The cleaning method for an air conditioning system as described in claim 5, characterized in that, Also includes: Step S70: Detect whether the continuous time during which the outdoor ambient temperature T4 is lower than the third specified temperature m is greater than or equal to the third specified time t3. If so, proceed to step S80. Step S80: The vent valve is opened, and the heating gas-liquid separator mode is started; Step S90: If the opening time of the vent valve is ≥ the fourth predetermined time t4, then proceed to step S100. Step S100: Exit the heating gas-liquid separator mode and close the vent valve; Step S110: Detect whether the continuous time during which the outdoor ambient temperature T4 is lower than the third specified temperature m is greater than or equal to the fifth specified time t5. If yes, return to step S80; otherwise, proceed to step S120. Step S120: Detect whether the outdoor ambient temperature T4 is higher than the fourth specified temperature p; if so, proceed to step S130. In step S130, the vent valve remains closed, exiting the heated gas-liquid separator mode.

9. The cleaning method for an air conditioning system as described in any one of claims 5-8, characterized in that, The air conditioning system also has a dial switch, and in step S10, the user selects to enter the manual cleaning mode or the automatic cleaning mode by operating the dial switch.

10. A computer-readable storage medium, characterized in that, The system stores processor-readable instructions, and one or more processors execute the cleaning method of the air conditioning system as described in any one of claims 5-9 by running the processor-readable instructions.

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