Air conditioning system control method, device, storage medium and system

Abstract

The invention relates to an air conditioner system control method and device, a storage medium and a system. The air conditioner system control method comprises the steps that the current operation frequency and the current outdoor environment temperature of an air conditioner system are obtained; and under the condition that the current operation frequency is determined to be smaller than or equal to a first preset frequency threshold value, according to the current operation frequency and the current outdoor environment temperature, the pressure difference between an exhaust cavity and an air suction cavity in the air conditioning system is reduced, so that the impact between a sliding piece and a sliding piece groove is relieved. Under the condition that the air conditioning system is determined to be in the low-frequency operation state according to the current operation frequency, according to the current operation frequency and the current outdoor environment temperature, the pressure difference between an exhaust cavity and an air suction cavity in the air conditioning system can be effectively reduced, and the air conditioning efficiency is improved under the condition that the pressure difference between the exhaust cavity and the air suction cavity is reduced. And the impact between the slip sheet and the slip sheet groove can be effectively reduced, so that the noise generated by the impact between the slip sheet and the slip sheet groove is reduced, and the service life of the slip sheet can be effectively prolonged.

Description

Technical Field

[0001] The present disclosure relates to the technical field of air conditioners, and particularly to an air conditioner system control method, device, storage medium, and system. Background Art

[0002] Under normal circumstances, when the indoor temperature reaches a certain range, the fixed-frequency air conditioner stops working. When the indoor temperature changes, it restarts. This working method causes a large amount of energy waste in the fixed-frequency air conditioner. Compared with the fixed-frequency air conditioner, when it is determined that the indoor temperature is the temperature set by the user, the variable-frequency air conditioner operates at a low frequency. When the indoor temperature changes, the operating frequency of the air conditioner is increased to enable the variable-frequency air conditioner to refrigerate or heat. However, when the variable-frequency air conditioner is operating at a low frequency, the sliding vane of the compressor in the variable-frequency air conditioner will impact the compressor pump body, such as the sliding vane groove and roller, causing the variable-frequency air conditioner to generate a certain noise and shortening the service life of the sliding vane, which is not conducive to improving the experience of variable-frequency air conditioner users. Summary of the Invention

[0003] To overcome the problems existing in the related art, the present disclosure provides an air conditioner system control method, device, storage medium, and system.

[0004] According to a first aspect of an embodiment of the present disclosure, there is provided an air conditioner system control method. The air conditioner system includes a compressor, and the compressor includes an exhaust chamber, a suction chamber, a sliding vane, and a sliding vane groove. The method includes:

[0005] Obtain the current operating frequency and the current outdoor ambient temperature of the air conditioner system;

[0006] When it is determined that the current operating frequency is less than or equal to a first preset frequency threshold, reduce the pressure difference between the exhaust chamber and the suction chamber in the air conditioner system according to the current operating frequency and the current outdoor ambient temperature to reduce the impact between the sliding vane and the sliding vane groove.

[0007] Optionally, the air conditioner system includes an expansion valve, and the expansion valve is used to adjust the flow rate of the refrigerant in the air conditioner system to adjust the first pressure in the exhaust chamber and the second pressure in the suction chamber to change the pressure difference between the exhaust chamber and the suction chamber. The reducing the pressure difference between the exhaust chamber and the suction chamber in the air conditioner system according to the current operating frequency and the current outdoor ambient temperature includes:

[0008] Determine the target opening degree of the expansion valve according to the current outdoor ambient temperature and the current operating frequency;

[0009] By adjusting the current opening degree of the expansion valve to the target opening degree, the pressure difference between the exhaust chamber and the suction chamber in the air conditioning system is regulated. Wherein, when the opening degree of the expansion valve increases, the first pressure decreases, the second pressure increases, and the pressure difference between the exhaust chamber and the suction chamber decreases; when the opening degree of the expansion valve decreases, the first pressure increases, the second pressure decreases, and the pressure difference between the exhaust chamber and the suction chamber increases.

[0010] Optionally, the determining the target opening degree of the expansion valve according to the current outdoor ambient temperature and the current operating frequency includes:

[0011] When it is determined that the current outdoor ambient temperature is greater than a preset temperature threshold, the target opening degree is determined according to the current operating frequency and a first functional relationship. The first functional relationship includes a first preset opening degree, a second preset opening degree, a first preset frequency threshold, and a second preset frequency threshold. The first functional relationship is used to characterize the functional relationship between the target opening degree and the current operating frequency, the first preset opening degree, the second preset opening degree, the first preset frequency threshold, and the second preset frequency threshold.

[0012] Optionally, the determining the target opening degree according to the current operating frequency and the first functional relationship includes:

[0013] Determine a target standby opening degree according to the current operating frequency, the first preset opening degree, the second preset opening degree, the first preset frequency threshold, and the second preset frequency threshold;

[0014] Take the sum value of the target standby opening degree and the first preset opening degree as the target opening degree.

[0015] Optionally, the determining the target opening degree of the expansion valve according to the current outdoor ambient temperature and the current operating frequency further includes:

[0016] When it is determined that the current outdoor ambient temperature is less than or equal to the preset temperature threshold, the target opening degree is determined according to the current operating frequency and a second functional relationship. Wherein, the second functional relationship includes a compensation opening degree, the first preset frequency threshold, the second preset frequency threshold, the first preset opening degree, and the second preset opening degree. The second functional relationship is used to characterize the functional relationship between the target opening degree and the current operating frequency, the compensation opening degree, the first preset opening degree, the second preset opening degree, the first preset frequency threshold, and the second preset frequency threshold.

[0017] Optionally, the determining the target opening degree according to the current operating frequency and the second functional relationship includes:

[0018] Determine a target standby opening degree according to the current operating frequency, the first preset opening degree, the second preset opening degree, the first preset frequency threshold, and the second preset frequency threshold;

[0019] Use the target difference between the sum of the target standby opening degree and the first preset opening degree and the compensation opening degree as the target opening degree.

[0020] Optionally, the determining the target standby opening degree according to the current operating frequency, the first preset opening degree, the second preset opening degree, the first preset frequency threshold, and the second preset frequency threshold includes:

[0021] Determine a first difference between the first preset frequency threshold and the current operating frequency, a second difference between the first preset frequency threshold and the second preset frequency threshold, and a third difference between the first preset opening degree and the second preset opening degree;

[0022] Determine a first ratio of the first difference to the second difference, and determine the product of the first ratio and the third difference to obtain the target standby opening degree.

[0023] According to a second aspect of the embodiments of the present disclosure, there is provided an air-conditioning system control device. The air-conditioning system includes a compressor. The compressor includes an exhaust cavity, a suction cavity, a sliding vane, and a sliding vane groove. The device includes:

[0024] An acquisition module configured to acquire the current operating frequency and the current outdoor ambient temperature of the air-conditioning system;

[0025] An adjustment module configured to, when determining that the current operating frequency is less than or equal to the first preset frequency threshold, reduce the pressure difference between the exhaust cavity and the suction cavity in the air-conditioning system according to the current operating frequency and the current outdoor ambient temperature, so as to reduce the impact between the sliding vane and the sliding vane groove.

[0026] Optionally, the air-conditioning system includes an expansion valve. The expansion valve is used to adjust the flow rate of the refrigerant in the air-conditioning system to adjust the first pressure in the exhaust cavity and the second pressure in the suction cavity, so as to change the pressure difference between the exhaust cavity and the suction cavity. The adjustment device is configured to:

[0027] Determine the target opening degree of the expansion valve according to the current outdoor ambient temperature and the current operating frequency;

[0028] By adjusting the current opening degree of the expansion valve to the target opening degree, the pressure difference between the exhaust chamber and the suction chamber in the air conditioning system is reduced. Wherein, when the opening degree of the expansion valve increases, the first pressure decreases, the second pressure increases, and the pressure difference between the exhaust chamber and the suction chamber decreases; when the opening degree of the expansion valve decreases, the first pressure increases, the second pressure decreases, and the pressure difference between the exhaust chamber and the suction chamber increases.

[0029] Optionally, the adjusting device is configured to:

[0030] When it is determined that the current outdoor ambient temperature is greater than the preset temperature threshold, determine the target opening degree according to the current operating frequency and the first function relationship. The first function relationship includes a first preset opening degree, a second preset opening degree, a first preset frequency threshold, and a second preset frequency threshold. The first function relationship is used to characterize the functional relationship between the target opening degree and the current operating frequency, the first preset opening degree, the second preset opening degree, the first preset frequency threshold, and the second preset frequency threshold.

[0031] Optionally, the adjusting device is configured to:

[0032] Determine a target standby opening degree according to the current operating frequency, the first preset opening degree, the second preset opening degree, the first preset frequency threshold, and the second preset frequency threshold;

[0033] Use the sum value of the target standby opening degree and the first preset opening degree as the target opening degree.

[0034] Optionally, the adjusting device is configured to:

[0035] When it is determined that the current outdoor ambient temperature is less than or equal to the preset temperature threshold, determine the target opening degree according to the current operating frequency and the second function relationship. Wherein, the second function relationship includes a compensation opening degree, the first preset frequency threshold, the second preset frequency threshold, the first preset opening degree, and the second preset opening degree. The second function relationship is used to characterize the functional relationship between the target opening degree and the current operating frequency, the compensation opening degree, the first preset opening degree, the second preset opening degree, the first preset frequency threshold, and the second preset frequency threshold.

[0036] Optionally, the adjusting device is configured to:

[0037] Determine a target standby opening degree according to the current operating frequency, the first preset opening degree, the second preset opening degree, the first preset frequency threshold, and the second preset frequency threshold;

[0038] Use the target difference value between the sum of the target standby opening and the first preset opening and the compensation opening as the target opening.

[0039] Optionally, an adjustment device is configured to:

[0040] Determine a first difference between the first preset frequency threshold and the current operating frequency, a second difference between the first preset frequency threshold and the second preset frequency threshold, and a third difference between the first preset opening and the second preset opening;

[0041] Determine a first ratio of the first difference to the second difference, and determine the product of the first ratio and the third difference to obtain a target standby opening.

[0042] According to a third aspect of the embodiments of the present disclosure, there is provided a computer-readable storage medium having computer program instructions stored thereon, and when the program instructions are executed by a processor, the steps of the air-conditioning system control method provided in the first aspect of the present disclosure are implemented.

[0043] According to a fourth aspect of the embodiments of the present disclosure, there is provided an air-conditioning system, and the air-conditioning system includes: the device provided in the second aspect of the present disclosure.

[0044] In the above technical solution, by obtaining the current operating frequency and the current outdoor ambient temperature of the air-conditioning system; when it is determined that the current operating frequency is less than or equal to the first preset frequency threshold, according to the current operating frequency and the current outdoor ambient temperature, reduce the pressure difference between the exhaust chamber and the suction chamber in the air-conditioning system to reduce the impact between the sliding vane and the sliding vane groove. In this way, when it is determined that the current operating frequency is less than or equal to the first preset frequency threshold, according to the current operating frequency and the current outdoor ambient temperature, the pressure difference between the exhaust chamber and the suction chamber in the air-conditioning system can be effectively reduced. Since the pressure difference between the exhaust chamber and the suction chamber is greater than the friction force between the top of the sliding vane and the body of the compressor, causing the sliding vane to impact the sliding vane groove, therefore, when reducing the pressure difference between the exhaust chamber and the suction chamber, the impact between the sliding vane and the sliding vane groove can be effectively reduced, thereby reducing the noise generated by the impact between the sliding vane and the sliding vane groove, and also effectively extending the service life of the sliding vane.

[0045] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present disclosure and used together with the specification to explain the principles of the present disclosure.

[0047] Figure 1Schematic diagram of a compressor shown according to an exemplary embodiment;

[0048] Figure 2 Schematic diagram of the sliding of a sliding vane shown according to an exemplary embodiment of the present disclosure;

[0049] Figure 3 Flowchart of a method for controlling an air-conditioning system shown according to an exemplary embodiment;

[0050] Figure 4 is according to Figure 3 shown embodiment shows a flowchart of a method for controlling an air-conditioning system;

[0051] Figure 5 is according to Figure 4 shown embodiment shows a flowchart of a method for controlling an air-conditioning system;

[0052] Figure 6 Block diagram of an air-conditioning system control device shown according to an exemplary embodiment. Detailed implementation

[0053] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0054] Before detailing the specific implementation of the present disclosure, the application scenarios of the present disclosure are described as follows. The present disclosure can be applied to an air-conditioning system, which can include a compressor, an expansion valve, an evaporator, and a condenser, as Figure 1 shown, Figure 1A schematic diagram of a compressor shown according to an exemplary embodiment. The compressor may include a suction port 1, a suction chamber 2, a discharge chamber 3, a discharge port 4, a sliding vane 5, a sliding vane groove 6, and an eccentric wheel 7. The sliding vane 5 is movably connected to the eccentric wheel 7 through the sliding vane groove 6. The top end of the sliding vane 5 touches the housing of the compressor, so that when the eccentric wheel 7 rotates, the sliding vane 5 can expand and contract in the sliding vane groove 6. The discharge chamber 3 is connected to the condenser in the air-conditioning system through the discharge port 4, and the suction chamber 2 is connected to the evaporator in the air-conditioning system through the suction port 1. An expansion valve is usually connected between the evaporator and the condenser in the air-conditioning system. The discharge chamber can be used to store the high-pressure gas converted from the low-pressure gas by the compressor and deliver the high-pressure gas to the condenser through the discharge port 4. The suction chamber stores the low-pressure gas input through the suction port. If the variable-frequency air-conditioning system is in a low-frequency operation state, the rotation speed of the eccentric wheel 7 is relatively low, and the gas pressure in the suction chamber 2 is much smaller than the gas pressure in the discharge chamber 3, so that the sliding vane 5 changes its inclination direction because the frictional force it receives is much smaller than the pressure difference between the suction chamber 2 and the discharge chamber 3, and then the sliding vane 5 will impact the sliding vane groove 6, resulting in noise in the air-conditioning system and seriously shortening the service life of the sliding vane 5. Among them, the process of the change in the inclination direction of the sliding vane 5 can be referred to Figure 2 , Figure 2 A schematic diagram of the sliding of a sliding vane shown according to an exemplary embodiment of the present disclosure. As Figure 2 shown, the rotation angle of the eccentric wheel 7 can be from 0 to 360 degrees, including four states: less than 90° (i.e., the first state), greater than 90° and less than 130° (i.e., the second state), less than 180° and greater than or equal to 130° (i.e., the third state), and less than 360° and greater than 180° (i.e., the fourth state). When the rotation angle of the eccentric wheel 7 is less than 90°, the top end of the sliding vane 5 biases to the left. When the rotation angle of the eccentric wheel 7 is 90°, the frictional force received by the top end of the sliding vane 5 is much smaller than the pressure difference between the suction chamber 2 and the discharge chamber 3, and the top end of the sliding vane 5 quickly biases to the right, so that the sliding vane 5 impacts the sliding vane groove 6; when the rotation angle of the eccentric wheel 7 is less than 130° and greater than 90°, the top end of the sliding vane 5 biases to the right. When the rotation angle of the eccentric wheel 7 is less than 180° and greater than or equal to 130°, the top end of the sliding vane 5 biases to the right; when the rotation angle of the eccentric wheel 7 is 180°, the frictional force received by the top end of the sliding vane 5 is much smaller than the pressure difference between the suction chamber 2 and the discharge chamber 3, and the top end of the sliding vane 5 quickly biases to the left, so that the sliding vane 5 impacts the sliding vane groove 6 again; when the rotation angle of the eccentric wheel 7 is less than 360° and greater than 180°, the top end of the sliding vane 5 biases to the left. Among them, when the rotation angle of the eccentric wheel 7 is 90° and 180°, the sliding vane 5 will impact the sliding vane groove 6, and the sound generated by the impact will become the noise during the operation of the air-conditioning system, and the impact will seriously shorten the service life of the sliding vane 5, which is not conducive to the extension of the service life of the entire air conditioner.

[0055] To solve the above technical problems, the present disclosure provides an air-conditioning system control method, device, storage medium, and system. The air-conditioning system control method obtains the current operating frequency and the current outdoor ambient temperature of the air-conditioning system. When it is determined that the current operating frequency is less than or equal to the first preset frequency threshold, the pressure difference between the exhaust chamber and the suction chamber in the air-conditioning system is reduced according to the current operating frequency and the current outdoor ambient temperature, so as to reduce the impact between the sliding vane and the sliding vane groove. In this way, when it is determined that the current operating frequency is less than or equal to the first preset frequency threshold, the pressure difference between the exhaust chamber and the suction chamber in the air-conditioning system can be effectively reduced according to the current operating frequency and the current outdoor ambient temperature. Since the pressure difference between the exhaust chamber and the suction chamber is greater than the friction force between the top of the sliding vane and the body of the compressor, causing the sliding vane to impact the sliding vane groove, therefore, when the pressure difference between the exhaust chamber and the suction chamber is reduced, the impact between the sliding vane and the sliding vane groove can be effectively reduced, thereby reducing the noise generated by the impact between the sliding vane and the sliding vane groove, and also effectively extending the service life of the sliding vane.

[0056] The following elaborates on the embodiments of the present disclosure in conjunction with specific drawings.

[0057] Figure 3 is a flowchart of an air-conditioning system control method shown according to an exemplary embodiment. The air-conditioning system includes a compressor, and the compressor includes an exhaust chamber, a suction chamber, a sliding vane, and a sliding vane groove. As Figure 3 shown, the air-conditioning system control method may include the following steps:

[0058] In step 201, the current operating frequency and the current outdoor ambient temperature of the air-conditioning system are obtained.

[0059] Among them, the current operating frequency can be collected by sensors set in the air-conditioning system, such as a rotational speed sensor, a Hall sensor, or a current sensor, etc. The current outdoor ambient temperature can be collected by a temperature sensor set in the outdoor unit of the air-conditioning system.

[0060] In step 202, when it is determined that the current operating frequency is less than or equal to the first preset frequency threshold, the pressure difference between the exhaust chamber and the suction chamber in the air-conditioning system is reduced according to the current operating frequency and the current outdoor ambient temperature, so as to reduce the impact between the sliding vane and the sliding vane groove.

[0061] Among them, the first preset frequency threshold can be determined according to the low-frequency operating range of the air-conditioning system. For example, if the low-frequency operating range of the air-conditioning system is 12Hz - 20Hz, the first preset frequency threshold can be 12Hz, 15Hz, 18Hz, or 20Hz, etc. When the current operating frequency of the air-conditioning system is less than or equal to the first preset frequency threshold, it can be determined that the air-conditioning system is in a low-frequency operating state.

[0062] As shown in Figure 4 the figure, the air conditioning system includes an expansion valve, which is used to adjust the first pressure in the exhaust chamber and the second pressure in the suction chamber by regulating the flow rate of the refrigerant in the air conditioning system, so as to change the pressure difference between the exhaust chamber and the suction chamber. Figure 4 It is a flowchart of a control method for an air conditioning system shown according to Figure 3 the embodiment shown in the figure. The implementation of this step may include the following steps:

[0063] In step 2021, the target opening of the expansion valve is determined according to the current outdoor ambient temperature and the current operating frequency.

[0064] One implementation of this step may be: when it is determined that the current outdoor ambient temperature is greater than the preset temperature threshold, obtain the first preset correspondence, and determine the first standby target opening of the expansion valve corresponding to the current operating frequency according to the first preset correspondence. When it is determined that the current outdoor ambient temperature is less than or equal to the preset temperature threshold, obtain the second preset correspondence, and determine the second standby target opening of the expansion valve corresponding to the current operating frequency according to the first preset correspondence. Take the first standby target opening or the second standby target opening as the target opening.

[0065] Among them, the first preset correspondence and the second preset correspondence are used to represent the correspondence between the current operating frequency of the air conditioning system and the opening of the expansion valve, and the first standby target opening is greater than the second standby target opening.

[0066] It should be noted that when it is determined that the current outdoor ambient temperature is less than or equal to the preset temperature threshold, the gas pressure difference between the exhaust chamber and the suction chamber in the air conditioning system is small, and the opening of the expansion valve can be appropriately reduced.

[0067] In step 2022, the pressure difference between the exhaust chamber and the suction chamber in the air conditioning system is adjusted by adjusting the current opening of the expansion valve to the target opening.

[0068] Among them, when the opening of the expansion valve increases, the first pressure decreases, the second pressure increases, and the pressure difference between the exhaust chamber and the suction chamber decreases; when the opening of the expansion valve decreases, the first pressure increases, the second pressure decreases, and the pressure difference between the exhaust chamber and the suction chamber increases.

[0069] It should be noted that when the air-conditioning system is operating at a low frequency, during the rotation of the eccentric wheel 7, both sides of the offset sliding vane 5 can be simultaneously affected by the first pressure and the second pressure acting on the sliding vane 5. Usually, the first pressure is much greater than the second pressure, causing the sliding vane 5 to receive a driving force in the same direction as the action direction of the first pressure on the sliding vane 5. The action direction of this driving force on the sliding vane 5 is opposite to the action direction of the frictional force received by the sliding vane 5. And when the first pressure is much greater than the second pressure, this driving force is also much greater than the frictional force received by the sliding vane 5, resulting in a change in the inclination direction of the sliding vane 5, causing the sliding vane 5 to hit the sliding vane groove 6, which can generate an impact sound and seriously shorten the service life of the sliding vane 5. By increasing the opening degree of the expansion valve, the first pressure can be reduced and the second pressure can be increased, so as to reduce the pressure difference between the exhaust chamber and the suction chamber in the air-conditioning system, reduce the impact between the sliding vane and the sliding vane groove 6, thereby reducing the impact sound generated by the impact between the sliding vane 5 and the sliding vane groove 6, and effectively extending the service life of the sliding vane 5.

[0070] The above technical solution can effectively reduce the pressure difference between the exhaust chamber and the suction chamber in the air-conditioning system according to the current operating frequency and the current outdoor ambient temperature when it is determined that the current operating frequency is less than or equal to the first preset frequency threshold. Since the pressure difference between the exhaust chamber and the suction chamber is greater than the frictional force between the top of the sliding vane and the body of the compressor, causing the sliding vane to hit the sliding vane groove, therefore, when reducing the pressure difference between the exhaust chamber and the suction chamber, it can effectively reduce the impact between the sliding vane and the sliding vane groove, and further reduce the noise generated by the impact between the sliding vane and the sliding vane groove, and can also effectively extend the service life of the sliding vane.

[0071] Figure 5 is based on Figure 4 The flowchart of a control method for an air-conditioning system shown in the illustrated embodiment is as Figure 5 shown, the above Figure 4 Another implementation manner in step 1021 shown can include the following steps:

[0072] S1. When it is determined that the current outdoor ambient temperature is greater than the preset temperature threshold, determine the target opening degree according to the current operating frequency and the first functional relationship.

[0073] Among them, the first function relationship includes a first preset opening degree, a second preset opening degree, a first preset frequency threshold, and a second preset frequency threshold. The first function relationship is used to represent the functional relationship between the target opening degree, the current operating frequency, the first preset opening degree, the second preset opening degree, the first preset frequency threshold, and the second preset frequency threshold. The preset temperature threshold can be obtained according to the optimal outdoor temperature range set in the air conditioning system. For example, when the air conditioning system is operating, the optimal outdoor temperature range is 25°C - 35°C, and the preset temperature threshold can be 26°C, 29°C, 32°C, 35°C, etc. The second preset frequency threshold can be the lowest operating frequency of the air conditioning system and can be obtained according to the operating frequency range of the air conditioning system. For example, the operating frequency range of the air conditioning system is 10Hz - 120Hz, and the second preset frequency threshold can be 10Hz. Generally, the value range of the second preset frequency threshold is 1Hz - 10Hz. The first preset opening degree can be obtained by detecting the opening degree of the expansion valve when the current frequency of the air conditioning system is at the first preset frequency threshold. Generally, the value range of the first preset opening degree is 260 steps - 360 steps. The second preset opening degree can be obtained by detecting the opening degree of the expansion valve when the current frequency of the air conditioning system is at the second preset frequency threshold. Generally, the value range of the second preset opening degree is 360 steps - 500 steps.

[0074] It should be noted that the first function relationship can be the following function expression:

[0075] P=(H 1 -H) / H 1 -H 2 ×(P 2 -P 1 )+P 1

[0076] Among them, P can be the target opening degree of the expansion valve, P 1 can be the first preset opening degree, P 2 can be the second preset opening degree, H can be the current operating frequency, H 1 can be the first preset frequency threshold, H 2 can be the second preset frequency threshold.

[0077] The implementation manner of this step can be: determining the target standby opening degree according to the current operating frequency, the first preset opening degree, the second preset opening degree, the first preset frequency threshold, and the second preset frequency threshold; taking the sum value of the target standby opening degree and the first preset opening degree as the target opening degree.

[0078] Among them, the implementation manner of determining the target standby opening according to the current operating frequency, the first preset opening, the second preset opening, the first preset frequency threshold, and the second preset frequency threshold may be: determining a first difference between the first preset frequency threshold and the current operating frequency, a second difference between the first preset frequency threshold and the second preset frequency threshold, and a third difference between the first preset opening and the second preset opening; determining a first ratio of the first difference to the second difference, and determining a product of the first ratio and the third difference to obtain the target standby opening.

[0079] S2. When it is determined that the current outdoor ambient temperature is less than or equal to the preset temperature threshold, determine the target opening according to the current operating frequency and the second functional relationship.

[0080] Among them, the second functional relationship includes a compensation opening, the first preset frequency threshold, the second preset frequency threshold, the first preset opening, and the second preset opening. The second functional relationship is used to characterize the functional relationship between the target opening and the current operating frequency, the compensation opening, the first preset opening, the second preset opening, the first preset frequency threshold, and the second preset frequency threshold. The compensation opening is used to reduce the target opening of the expansion valve when it is determined that the current outdoor ambient temperature is less than or equal to the preset temperature threshold. Generally, the value range of the compensation opening can be 0Hz - 60Hz.

[0081] It should be noted that the second functional relationship may be the following functional expression:

[0082] P=(H 1 -H) / H 1 -H 2 ×(P 2 -P 1 )+P 1 -P 0

[0083] Among them, P may be the target opening of the expansion valve, P 0 may be the compensation opening, P 1 may be the first preset opening, P 2 may be the second preset opening, H may be the current operating frequency, H 1 may be the first preset frequency threshold, H 2 may be the second preset frequency threshold.

[0084] The implementation of this step can be: determining a target standby opening degree according to the current operating frequency, the first preset opening degree, the second preset opening degree, the first preset frequency threshold, and the second preset frequency threshold; using the target difference between the sum of the target standby opening degree and the first preset opening degree and the compensation opening degree as the target opening degree.

[0085] Among them, the implementation of determining the target standby opening degree according to the current operating frequency, the first preset opening degree, the second preset opening degree, the first preset frequency threshold, and the second preset frequency threshold can be: determining a first difference between the first preset frequency threshold and the current operating frequency, a second difference between the first preset frequency threshold and the second preset frequency threshold, and a third difference between the first preset opening degree and the second preset opening degree; determining a first ratio of the first difference to the second difference, and determining the product of the first ratio and the third difference to obtain the target standby opening degree.

[0086] It should be noted that when it is determined that the current outdoor ambient temperature is less than or equal to the preset temperature threshold, the gas pressure difference between the exhaust chamber and the suction chamber in the air-conditioning system is small, and the opening degree of the expansion valve can be appropriately reduced through the compensation opening degree.

[0087] The above technical solution can effectively reduce the pressure difference between the exhaust chamber and the suction chamber in the air-conditioning system according to the current operating frequency and the current outdoor ambient temperature when it is determined that the current operating frequency is less than or equal to the first preset frequency threshold. Since the pressure difference between the exhaust chamber and the suction chamber is greater than the friction force between the top of the sliding vane and the body of the compressor, causing the sliding vane to impact the sliding vane groove, therefore, when reducing the pressure difference between the exhaust chamber and the suction chamber, it can effectively reduce the impact of the sliding vane on the sliding vane groove, thereby reducing the noise generated by the impact of the sliding vane on the sliding vane groove, and can also effectively extend the service life of the sliding vane.

[0088] Figure 6 is a block diagram of an air-conditioning system control device shown according to an exemplary embodiment. The air-conditioning system includes a compressor, and the compressor includes an exhaust chamber, a suction chamber, a sliding vane, and a sliding vane groove, as Figure 6 shown, the device includes:

[0089] An acquisition module 601, configured to acquire the current operating frequency and the current outdoor ambient temperature of the air-conditioning system;

[0090] An adjustment module 602, configured to reduce the pressure difference between the exhaust chamber and the suction chamber in the air-conditioning system according to the current operating frequency and the current outdoor ambient temperature when it is determined that the current operating frequency is less than or equal to the first preset frequency threshold, so as to reduce the impact between the sliding vane and the sliding vane groove.

[0091] Optionally, the air conditioning system includes an expansion valve configured to adjust the first pressure in the exhaust chamber and the second pressure in the suction chamber by regulating the flow rate of the refrigerant in the air conditioning system, so as to change the pressure difference between the exhaust chamber and the suction chamber; the adjustment module 602 is configured to:

[0092] Determine the target opening degree of the expansion valve according to the current outdoor ambient temperature and the current operating frequency;

[0093] Adjust the pressure difference between the exhaust chamber and the suction chamber in the air conditioning system by adjusting the current opening degree of the expansion valve to the target opening degree. Wherein, when the opening degree of the expansion valve increases, the first pressure decreases, the second pressure increases, and the pressure difference between the exhaust chamber and the suction chamber decreases; when the opening degree of the expansion valve decreases, the first pressure increases, the second pressure decreases, and the pressure difference between the exhaust chamber and the suction chamber increases.

[0094] Optionally, the adjustment module 602 is configured to:

[0095] When it is determined that the current outdoor ambient temperature is greater than a preset temperature threshold, determine the target opening degree according to the current operating frequency and a first functional relationship. The first functional relationship includes a first preset opening degree, a second preset opening degree, a first preset frequency threshold, and a second preset frequency threshold, and the first functional relationship is used to characterize the functional relationship between the target opening degree and the current operating frequency, the first preset opening degree, the second preset opening degree, the first preset frequency threshold, and the second preset frequency threshold.

[0096] Optionally, the adjustment module 602 is configured to:

[0097] Determine a target standby opening degree according to the current operating frequency, the first preset opening degree, the second preset opening degree, the first preset frequency threshold, and the second preset frequency threshold;

[0098] Use the sum value of the target standby opening degree and the first preset opening degree as the target opening degree.

[0099] Optionally, the adjustment module 602 is configured to:

[0100] When it is determined that the current outdoor ambient temperature is less than or equal to the preset temperature threshold, determine the target opening degree according to the current operating frequency and the second functional relationship, where the second functional relationship includes a compensation opening degree, the first preset frequency threshold, the second preset frequency threshold, the first preset opening degree, and the second preset opening degree, and the second functional relationship is used to characterize the functional relationship between the target opening degree and the current operating frequency, the compensation opening degree, the first preset opening degree, the second preset opening degree, the first preset frequency threshold, and the second preset frequency threshold.

[0101] Optionally, the adjustment module 602 is configured to:

[0102] Determine a target standby opening degree according to the current operating frequency, the first preset opening degree, the second preset opening degree, the first preset frequency threshold, and the second preset frequency threshold;

[0103] Use the sum of the target standby opening degree and the first preset opening degree minus the target difference of the compensation opening degree as the target opening degree.

[0104] Optionally, the adjustment module 602 is configured to:

[0105] Determine a first difference between the first preset frequency threshold and the current operating frequency, a second difference between the first preset frequency threshold and the second preset frequency threshold, and a third difference between the first preset opening degree and the second preset opening degree;

[0106] Determine a first ratio of the first difference to the second difference, and determine the product of the first ratio and the third difference to obtain the target standby opening degree.

[0107] The above technical solution can effectively reduce the pressure difference between the exhaust chamber and the suction chamber in the air-conditioning system according to the current operating frequency and the current outdoor ambient temperature when it is determined that the current operating frequency is less than or equal to the first preset frequency threshold. Since the pressure difference between the exhaust chamber and the suction chamber is greater than the friction force between the top of the sliding vane and the body of the compressor, causing the sliding vane to impact the sliding vane groove, therefore, when reducing the pressure difference between the exhaust chamber and the suction chamber, it can effectively reduce the impact of the sliding vane on the sliding vane groove, thereby reducing the noise generated by the impact of the sliding vane on the sliding vane groove, and can also effectively extend the service life of the sliding vane.

[0108] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment related to the method, and will not be elaborated here.

[0109] The present disclosure also provides a computer-readable storage medium, on which computer program instructions are stored, and when the program instructions are executed by a processor, the steps of the air-conditioning system control method provided by the present disclosure are implemented.

[0110] The present disclosure also provides an air-conditioning system, and the air-conditioning system includes: the present disclosure Figure 4 the steps of the air-conditioning system control method provided.

[0111] Those skilled in the art will readily conceive of other embodiments of the present disclosure after considering the specification and practicing the present disclosure. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common general knowledge or conventional technical means in the technical field not disclosed by the present disclosure. The specification and examples are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0112] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A method for controlling an air conditioning system, characterized in that, the air conditioning system includes a compressor, the compressor includes an exhaust chamber, a suction chamber, a sliding vane and a sliding vane groove, and the method includes: acquiring the current operating frequency and the current outdoor ambient temperature of the air conditioning system; when it is determined that the current operating frequency is less than or equal to a first preset frequency threshold, reducing the pressure difference between the exhaust chamber and the suction chamber in the air conditioning system according to the current operating frequency and the current outdoor ambient temperature, so as to reduce the impact between the sliding vane and the sliding vane groove.

2. The method according to claim 1, characterized in that, the air conditioning system includes an expansion valve, and the expansion valve is used to adjust the first pressure in the exhaust chamber and the second pressure in the suction chamber by adjusting the flow rate of the refrigerant in the air conditioning system, so as to change the pressure difference between the exhaust chamber and the suction chamber; the reducing the pressure difference between the exhaust chamber and the suction chamber in the air conditioning system according to the current operating frequency and the current outdoor ambient temperature includes: determining the target opening degree of the expansion valve according to the current outdoor ambient temperature and the current operating frequency; adjusting the current opening degree of the expansion valve to the target opening degree to adjust the pressure difference between the exhaust chamber and the suction chamber in the air conditioning system, wherein when the opening degree of the expansion valve increases, the first pressure decreases, the second pressure increases, and the pressure difference between the exhaust chamber and the suction chamber decreases.

3. The method according to claim 2, characterized in that, the determining the target opening degree of the expansion valve according to the current outdoor ambient temperature and the current operating frequency includes: when it is determined that the current outdoor ambient temperature is greater than a preset temperature threshold, determining the target opening degree according to the current operating frequency and a first functional relationship, the first functional relationship includes a first preset opening degree, a second preset opening degree, a first preset frequency threshold and a second preset frequency threshold, and the first functional relationship is used to characterize the functional relationship between the target opening degree and the current operating frequency, the first preset opening degree, the second preset opening degree, the first preset frequency threshold and the second preset frequency threshold.

4. The method according to claim 3, characterized in that, the determining the target opening degree according to the current operating frequency and the first functional relationship includes: determining a target standby opening degree according to the current operating frequency, the first preset opening degree, the second preset opening degree, the first preset frequency threshold and the second preset frequency threshold; taking the sum value of the target standby opening degree and the first preset opening degree as the target opening degree.

5. The method according to claim 3, characterized in that, the determining the target opening degree of the expansion valve according to the current outdoor ambient temperature and the current operating frequency further includes: When it is determined that the current outdoor ambient temperature is less than or equal to the preset temperature threshold, determine the target opening degree according to the current operating frequency and the second functional relationship, where the second functional relationship includes a compensation opening degree, the first preset frequency threshold, the second preset frequency threshold, the first preset opening degree, and the second preset opening degree, and the second functional relationship is used to represent the functional relationship between the target opening degree and the current operating frequency, the compensation opening degree, the first preset opening degree, the second preset opening degree, the first preset frequency threshold, and the second preset frequency threshold.

6. The method according to claim 5, wherein, the determining the target opening degree according to the current operating frequency and the second functional relationship includes: determining a target standby opening degree according to the current operating frequency, the first preset opening degree, the second preset opening degree, the first preset frequency threshold, and the second preset frequency threshold; using the sum value of the target standby opening degree and the first preset opening degree minus the target difference of the compensation opening degree as the target opening degree.

7. The method according to claim 4 or 6, wherein, the determining the target standby opening degree according to the current operating frequency, the first preset opening degree, the second preset opening degree, the first preset frequency threshold, and the second preset frequency threshold includes: determining a first difference between the first preset frequency threshold and the current operating frequency, a second difference between the first preset frequency threshold and the second preset frequency threshold, and a third difference between the first preset opening degree and the second preset opening degree; determining a first ratio of the first difference to the second difference, and determining the product of the first ratio and the third difference to obtain the target standby opening degree.

8. An air-conditioning system control device, wherein, the air-conditioning system includes a compressor, the compressor includes an exhaust chamber, a suction chamber, a sliding vane, and a sliding vane groove, and the device includes: an acquisition module configured to acquire the current operating frequency and the current outdoor ambient temperature of the air-conditioning system; an adjustment module configured to, when it is determined that the current operating frequency is less than or equal to the first preset frequency threshold, reduce the pressure difference between the exhaust chamber and the suction chamber in the air-conditioning system according to the current operating frequency and the current outdoor ambient temperature, so as to reduce the impact between the sliding vane and the sliding vane groove.

9. A computer-readable storage medium, on which computer program instructions are stored, wherein, when the program instructions are executed by a processor, the steps of the air-conditioning system control method according to any one of claims 1-7 are implemented.

10. An air-conditioning system, wherein, the air-conditioning system includes: the device according to claim 8 above.

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