Method for controlling pulsation noise of air conditioner, air conditioner and medium

Abstract

The present application relates to air conditioner noise control technical field, specifically provide a kind of air conditioner pulsation noise control method, air conditioner and medium, to solve the problem of noise in air conditioner due to refrigerant pulsation.For this purpose, the control method of the present application includes, start heating mode and detect the high pressure value V1 and low pressure value V2 of the two sides of compressor, V1 and V2 are transmitted to controller, the ratio of V1 and V2 is calculated, and compared with the preset high pressure value u1, preset low pressure value u2 and preset pressure ratio w stored in controller, when V1>u1, V2<u2 and V1 / V2>w, the basic opening N of electronic expansion valve is increased by preset value N1, and the opening of electronic expansion valve is increased by N1 every t0 seconds, when V1<u1, V2>u2 and V1 / V2<x, any condition is satisfied, the opening of electronic expansion valve restores to basic opening N, wherein V1>V2, u1>u2, w>x.The control scheme of the present application can change the high and low pressure of the two sides of compressor by adjusting the opening of electronic expansion valve to solve the noise caused by refrigerant pulsation.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioner noise control, and specifically provides a method for controlling the pulsating noise of an air conditioner, an air conditioner and a medium. Background Art

[0002] In daily life, people's dependence on air conditioners is increasing. An oil-gas separator is provided in an air conditioner, and its function is to separate the lubricating oil in the high-pressure refrigerant discharged by the compressor to ensure the safe and efficient operation of the air conditioner. In order to efficiently separate the lubricating oil, an additional oil return capillary tube is currently used.

[0003] The refrigerant pressure in an air conditioning system is greatly affected by the ambient temperature. When the air conditioner operates in heating mode, noise may occur in the indoor unit under some working conditions, which is caused by the pulsation of the refrigerant.

[0004] Therefore, there is an urgent need in the art for a new control solution for the pulsating noise of an air conditioner to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve the above technical problems, that is, to solve the problem of noise generated by refrigerant pulsation in an air conditioner.

[0006] In a first aspect, the present invention provides a method for controlling the pulsating noise of an air conditioner. The air conditioner includes a compressor, an oil separator, an oil return capillary tube, an electronic expansion valve and a controller. The oil return capillary tube is connected between the oil outlet of the oil separator and the suction side of the compressor. The electronic expansion valve is installed on the oil return capillary tube. The controller is connected to the compressor and the electronic expansion valve. The control method includes turning on the heating mode and detecting the high-pressure value V1 and the low-pressure value V2 on both sides of the compressor; transmitting V1 and V2 to the controller, calculating the ratio of V1 to V2, and comparing it with the preset high-pressure value u1, the preset low-pressure value u2 and the preset pressure ratio w stored in the controller; when V1>u1, V2<u2 and V1 / V2>w, the basic opening degree N of the electronic expansion valve is increased by a preset value N1, and the opening degree of the electronic expansion valve is increased by N1 every t0 seconds; when any one of the conditions V1<u1, V2>u2 and V1 / V2<x is satisfied, the opening degree of the electronic expansion valve is restored to the basic opening degree N, where V1>V2, u1>u2, w>x.

[0007] In the preferred technical solution of the above control method for the pulsation noise of the air conditioner, the air conditioner further includes a high-pressure detection sensor and a low-pressure detection sensor connected to the controller. The high-pressure detection sensor is installed on the exhaust side of the compressor, and the low-pressure detection sensor is installed on the suction side of the compressor. The step of "starting the heating mode and detecting the high-pressure value V1 and the low-pressure value V2 on both sides of the compressor" specifically includes starting the high-pressure detection sensor and the low-pressure detection sensor after the air conditioner starts the heating mode; detecting the high-pressure value V1 on the exhaust side of the compressor through the high-pressure detection sensor; and detecting the low-pressure value V2 on the suction side of the compressor through the low-pressure detection sensor.

[0008] In the preferred technical solution of the above control method for the pulsation noise of the air conditioner, the step of "transmitting V1 and V2 to the controller" specifically includes that both the high-pressure detection sensor and the low-pressure detection sensor transmit the corresponding high-pressure value V1 and low-pressure value V2 to the controller every t1 seconds.

[0009] In the preferred technical solution of the above control method for the pulsation noise of the air conditioner, the step of "calculating the ratio of V1 to V2 and comparing it with the preset high-pressure value u1, preset low-pressure value u2, and preset pressure ratio w stored in the controller" specifically includes that the controller calculates the ratio of V1 to V2 and compares V1, V2, and the ratio of V1 to V2 with the stored preset high-pressure value u1, preset low-pressure value u2, and preset pressure ratio w every t0 seconds, where 2t1 > t0 > t1.

[0010] In the preferred technical solution of the above control method for the pulsation noise of the air conditioner, the step of "when V1 > u1, V2 < u2, and V1 / V2 > w, the basic opening N of the electronic expansion valve is increased by a preset value N1, and the opening of the electronic expansion valve is increased by N1 every t0 seconds" specifically includes that when the controller compares and obtains V1 > u1, V2 < u2, and V1 / V2 > w, the basic opening N of the electronic expansion valve is increased for the first time, and the adjustment amplitude is the preset value N1; the controller makes a comparison every t0 seconds. If V1 > u1, V2 < u2, and V1 / V2 > w are maintained, the opening of the electronic expansion valve is increased by N1.

[0011] In the preferred technical solution of the above control method for the pulsation noise of the air conditioner, the step of "when any one of the conditions V1 < u1, V2 > u2, and V1 / V2 < x is satisfied, the opening of the electronic expansion valve is restored to the basic opening N" specifically includes that the controller makes a comparison every t0 seconds. If V1 < u1 or V2 > u2 or V1 / V2 < x appears, the opening of the electronic expansion valve is restored to the basic opening N.

[0012] In the preferred technical solution of the above control method for the pulsation noise of the air conditioner, the control method further includes: when V1 > u1, V2 < u2, and w ≥ V1 / V2 ≥ x, keeping the opening degree of the electronic expansion valve unchanged.

[0013] In the preferred technical solution of the above control method for the pulsation noise of the air conditioner, the control method further includes: if during the entire detection process, the controller never obtains the comparison values of V1 > u1, V2 < u2, and V1 / V2 > w, then the basic opening degree N of the electronic expansion valve remains unchanged.

[0014] In a second aspect, the present invention provides an air conditioner, which includes a processor and a memory. The memory is adapted to store multiple program codes, and the program codes are adapted to be loaded and run by the processor to execute the foregoing control method for the pulsation noise of the air conditioner.

[0015] In a third aspect, the present invention provides a computer-readable storage medium, in which multiple program codes are stored. The program codes are characterized in that they are adapted to be loaded and run by a processor to execute the foregoing control method for the pulsation noise of the air conditioner.

[0016] In the case of adopting the above technical solution, in the control method for the pulsation noise of the air conditioner of the present invention, a refrigerant return capillary is connected between the oil outlet of the oil separator of the air conditioner and the suction side of the compressor, and the electronic expansion valve is installed on the refrigerant return capillary. The high-pressure value V1 on the discharge side of the compressor and the low-pressure value V2 on the suction side of the compressor are detected by a high-pressure detection sensor and a low-pressure detection sensor. Through comparison by the controller, the opening degree of the electronic expansion valve is adjusted accordingly to adjust the high-pressure value V1, the low-pressure value V2, and the ratio between the two, thereby preventing refrigerant pulsation from generating noise.

[0017] In the control method for the pulsation noise of the air conditioner of the present invention, when the air conditioner is turned on in the heating mode, the high-pressure value V1 on the discharge side of the compressor and the low-pressure value V2 on the suction side of the compressor are detected. The detected values of the two are output to the controller, the ratio between the two is calculated in the controller, and these three values are compared with the preset high-pressure value u1, the preset low-pressure value u2, and the preset pressure ratio w pre-stored in the controller. When V1 > u1, V2 < u2, and V1 / V2 > w, the basic opening degree N of the electronic expansion valve is increased by a preset value N1 and the opening degree is increased by N1 every once in a while. And once any situation that does not meet the above conditions occurs, the opening degree of the electronic expansion valve is restored to the basic opening degree N. By this method, the high-pressure value V1, the low-pressure value V2, and the ratio between the two are adjusted, thereby preventing refrigerant pulsation from generating noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following describes the preferred embodiments of the present invention in conjunction with the drawings, in which:

[0019] Figure 1 This is a flowchart illustrating an embodiment of the air conditioner pulsating noise control method of the present invention;

[0020] Figure 2 This is a schematic diagram illustrating an embodiment of the connection relationship of some components in the air conditioner of the present invention.

[0021] Figure label:

[0022] 1. Compressor;

[0023] 2. Oil separator;

[0024] 3. Oil return capillary;

[0025] 4. Electronic expansion valve;

[0026] 5. High-voltage detection sensor;

[0027] 6. Low-pressure detection sensor. Detailed Implementation

[0028] Some embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0029] In the description of this invention, "module" and "processor" can include hardware, software, or a combination of both. A module may include hardware circuitry, various suitable sensors, communication ports, and memory, and may also include software components, such as program code, or a combination of software and hardware. A processor may be a central processing unit, microprocessor, image processor, digital signal processor, or any other suitable processor. The processor has data and / or signal processing capabilities. The processor may be implemented in software, in hardware, or a combination of both. Non-transitory computer-readable storage media include any suitable medium capable of storing program code, such as magnetic disks, hard disks, optical disks, flash memory, read-only memory, random access memory, etc. The term "A and / or B" means all possible combinations of A and B, such as only A, only B, or A and B. The singular terms "a" or "this" may also include plural forms.

[0030] Reference Figures 1 to 2 , Figure 1 This is a flowchart of an embodiment of the air conditioner pulsating noise control method of the present invention. Figure 2 This is a schematic diagram illustrating an embodiment of the connection relationship of some components in the air conditioner of the present invention.

[0031] like Figure 2As shown, in the method for controlling the pulsating noise of an air conditioner, the air conditioner includes a compressor 1, an oil separator 2, an oil return capillary tube 3, an electronic expansion valve 4, and a controller. The oil return capillary tube 3 is connected between the oil outlet of the oil separator 2 and the suction side of the compressor 1. The electronic expansion valve 4 is installed on the oil return capillary tube 3. The controller is connected to the compressor 1 and the electronic expansion valve 4.

[0032] like Figure 1 As shown, the control method includes the following steps S101-S104:

[0033] S101: Turn on the heating mode and detect the high pressure value V1 and low pressure value V2 on both sides of compressor 1.

[0034] Specifically, after the air conditioner is turned on and the heating mode is selected, the high pressure value on the exhaust side and the low pressure value on the suction side of the compressor 1 in the air conditioner are detected.

[0035] In a preferred embodiment of the present invention, the air conditioner further includes a high-pressure detection sensor 5 and a low-pressure detection sensor 6 connected to the controller. The high-pressure detection sensor 5 is installed on the exhaust side of the compressor 1, and the low-pressure detection sensor 6 is installed on the suction side of the compressor 1. The step of “starting the heating mode and detecting the high pressure value V1 and the low pressure value V2 on both sides of the compressor 1” specifically includes activating the high-pressure detection sensor 5 and the low-pressure detection sensor 6 after the air conditioner starts the heating mode. The high-pressure detection sensor 5 detects the high pressure value V1 on the exhaust side of the compressor 1, and the low-pressure detection sensor 6 detects the low pressure value V2 on the suction side of the compressor 1.

[0036] Specifically, the high-pressure sensor 5 detects the pressure between the discharge side of the compressor 1 and the condenser. The low-pressure sensor 6 detects the pressure between the evaporator and the suction side of the compressor 1. Preferably, the high-pressure sensor 5 and the low-pressure sensor 6 detect the pressure values ​​of the discharge side and the suction side of the compressor 1 in real time. Alternatively, the high-pressure sensor 5 and the low-pressure sensor 6 can be set to detect at certain intervals to reduce the detection frequency and save costs.

[0037] S102: Transmit V1 and V2 to the controller, calculate the ratio of V1 to V2, and compare it with the preset high pressure value u1, preset low pressure value u2, and preset pressure ratio w stored in the controller.

[0038] Specifically, the high-pressure detection sensor 5 and the low-pressure detection sensor 6 transmit the detected high-pressure value V1 and low-pressure value V2 to the controller for later use. The controller stores preset high-pressure value u1 and preset low-pressure value u2 for comparison with the measured high-pressure value V1 and low-pressure value V2. In addition, the controller can also calculate the ratio of high-pressure value V1 to low-pressure value V2 and compare it with a preset pressure ratio w stored in its internal memory, and make the following judgment based on the comparison result.

[0039] In a preferred technical solution of the present invention, the step of "transmitting V1 and V2 to the controller" specifically includes that the high-pressure detection sensor 5 and the low-pressure detection sensor 6 transmit the corresponding high-pressure value V1 and low-pressure value V2 to the controller every t1 seconds.

[0040] Specifically, the high-pressure detection sensor 5 and the low-pressure detection sensor 6 can perform real-time detection or detect once every t1 seconds. Whether it is real-time detection or detection once every t1 seconds, data is transmitted to the controller once every t1 seconds.

[0041] In a preferred technical solution of the present invention, the step of "calculating the ratio of V1 to V2 and comparing it with the preset high-pressure value u1, preset low-pressure value u2, and preset pressure ratio w stored in the controller" specifically includes that the controller calculates the ratio of V1 to V2 and compares V1, V2, and the ratio of V1 to V2 with the stored preset high-pressure value u1, preset low-pressure value u2, and preset pressure ratio w every t0 seconds, where 2t1 > t0 > t1.

[0042] Specifically, the controller receives the data transmitted by the high-pressure detection sensor 5 and the low-pressure detection sensor 6 once every t1 seconds and makes a comparison every t0 seconds. Each comparison is made between two transmissions. By comparison, the pressure conditions on both sides of the compressor 1 can be easily obtained, thereby instructing the electronic expansion valve 4 to work. Among them, the three values of the preset high-pressure value u1, preset low-pressure value u2, and preset pressure ratio w respectively represent the values set for the high pressure, low pressure, and high-low pressure ratio to trigger the electronic expansion valve 4 to open larger.

[0043] S103: When V1 > u1, V2 < u2 and V1 / V2 > w, the basic opening N of the electronic expansion valve 4 is increased by a preset value N1, and the opening of the electronic expansion valve 4 is increased by N1 every t0 seconds, where V1 > V2 and u1 > u2.

[0044] Specifically, the electronic expansion valve 4 starts to work according to the basic opening N to transmit lubricating oil. When the high-pressure value V1, low-pressure value V2, and their ratio in the controller all meet the requirements for adjusting the opening, the basic opening N of the electronic expansion valve 4 is increased by a preset value N1.

[0045] Preferably, the preset value N1 = 5. That is to say, the basic opening N of the electronic expansion valve 4 is adjusted once every t0 seconds, and each adjustment is +5.

[0046] In a preferred technical solution of the present invention, the step of "when V1 > u1, V2 < u2 and V1 / V2 > w, the basic opening degree N of the electronic expansion valve 4 is increased by a preset value N1, and the opening degree of the electronic expansion valve 4 is increased by N1 every t0 seconds" specifically includes that when the controller compares and obtains V1 > u1, V2 < u2 and V1 / V2 > w, the basic opening degree N of the electronic expansion valve 4 is increased for the first time, and the adjustment range is the preset value N1; the controller makes a comparison every t0 seconds. If V1 > u1, V2 < u2 and V1 / V2 > w are maintained, the opening degree of the electronic expansion valve 4 is increased by N1.

[0047] Specifically, when the data value obtained by comparison in the controller satisfies V1 > u1, V2 < u2 and V1 / V2 > w, it indicates that the pressure difference on both sides of the compressor 1 is too large, and noise will occur in the indoor unit of the air conditioner. At this time, the basic opening degree N of the electronic expansion valve 4 needs to be increased until the comparison value no longer satisfies the above adjustment.

[0048] S104: When any one of the conditions V1 < u1, V2 > u2 and V1 / V2 < w is satisfied, the opening degree of the electronic expansion valve 4 is restored to the basic opening degree N, where w > x.

[0049] Specifically, when any one of the situations V1 < u1, V2 > u2 and V1 / V2 < x appears in the data value obtained by comparison in the controller, it indicates that the pressure difference on both sides of the compressor 1 is not large, and the indoor unit of the air conditioner will not generate noise due to the pulsation of the refrigerant flowing therein. At this time, the opening degree of the electronic expansion valve 4 is restored to the basic opening degree N.

[0050] In a preferred technical solution of the present invention, the control method further includes that when V1 > u1, V2 < u2 and w ≥ V1 / V2 ≥ x, the opening degree of the electronic expansion valve 4 remains unchanged.

[0051] Specifically, when the V1 / V2 ratio drops to w or even smaller than w, but is higher than or equal to x, there are uncertain factors in this case, and the opening degree of the electronic expansion valve 4 remains unchanged at the opening degree at that time.

[0052] In a preferred technical solution of the present invention, the control method further includes that if during the entire detection process, the controller never obtains the comparison value of V1 > u1, V2 < u2 and V1 / V2 > w, the basic opening degree N of the electronic expansion valve 4 remains unchanged.

[0053] Specifically, compared with this control method, during the entire detection process, the controller coordinates with the high-pressure detection sensor 5 and the low-pressure detection sensor 6. When the situation of V1 > u1, V2 < u2 and V1 / V2 > w never appears from beginning to end, it is considered that the high and low pressures on both sides of the compressor 1 meet the requirements, and there is no refrigerant pulsation phenomenon in the air-conditioning system. Therefore, there is no need to adjust the opening degree of the electronic expansion valve 4 to adjust the pressure.

[0054] Based on the above steps S101 - S104 and some of their subsidiary steps, it can be seen that in the method for controlling the pulsation noise of an air conditioner, a refrigerant return capillary 3 is connected between the oil outlet of the oil separator 2 of the air conditioner and the suction side of the compressor 1, and an electronic expansion valve 4 is installed on the refrigerant return capillary 3. The high - pressure value V1 on the discharge side of the compressor 1 and the low - pressure value V2 on the suction side of the compressor 1 are detected by a high - pressure detection sensor 5 and a low - pressure detection sensor 6. Through comparison by the controller, the opening degree of the electronic expansion valve 4 is adjusted accordingly to adjust the high - pressure value V1, the low - pressure value V2, or the ratio of the two, thereby preventing noise generated by refrigerant pulsation.

[0055] In the method for controlling the pulsation noise of the air conditioner of the present invention, when the air conditioner is turned on in the heating mode, the high - pressure value V1 on the discharge side of the compressor 1 and the low - pressure value V2 on the suction side of the compressor 1 are detected. The detected values of the two are output to the controller, and the ratio of the two is calculated in the controller. Then, these three values are compared with the preset high - pressure value u1, the preset low - pressure value u2, and the preset pressure ratio w pre - stored in the controller. When V1 > u1, V2 < u2, and V1 / V2 > w, the basic opening degree N of the electronic expansion valve 4 is increased by a preset value N1, and the opening degree is increased by N1 every once in a while. And once any of the above conditions is not met, the opening degree of the electronic expansion valve 4 is restored to the basic opening degree N. By this method, the high - pressure value V1, the low - pressure value V2, or the ratio of the two is adjusted, thereby preventing noise generated by refrigerant pulsation.

[0056] The air conditioner of this embodiment includes a processor and a memory. The memory is suitable for storing multiple program codes, and the program codes are suitable for being loaded and run by the processor to execute the aforementioned method for controlling the pulsation noise of the air conditioner.

[0057] The computer - readable storage medium of this embodiment stores multiple program codes, and is characterized in that the program codes are suitable for being loaded and run by a processor to execute the aforementioned method for controlling the pulsation noise of the air conditioner.

[0058] In the description of the present invention, a "module" and a "processor" may include hardware, software, or a combination of both. A module may include a hardware circuit, various suitable sensors, communication ports, a memory, and may also include a software part, such as program code, or may be a combination of software and hardware. A processor may be a central processing unit, a microprocessor, an image processor, a digital signal processor, or any other suitable processor. The processor has data and / or signal processing functions. The processor can be implemented in a software manner, a hardware manner, or a combination of both. A non - transient computer - readable storage medium includes any suitable medium for storing program code, such as magnetic disks, hard disks, optical discs, flash memories, read - only memories, random - access memories, and so on.

[0059] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments of the present invention can also be implemented by hardware related to computer program instructions. The computer program can be stored in a computer-readable storage medium, and when the computer program is executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable file, or some intermediate form. The computer-readable storage medium can include any entity or device capable of carrying the computer program code, a medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, a read-only memory, a random access memory, an electrical carrier signal, a telecommunication signal, and a software distribution medium, etc. It should be noted that the content contained in the computer-readable storage medium can be appropriately added or removed according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable storage medium does not include electrical carrier signals and telecommunication signals.

[0060] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A method for controlling pulsating noise in an air conditioner, characterized in that, The air conditioner includes a compressor, an oil separator, an oil return capillary tube, an electronic expansion valve, and a controller. The oil return capillary tube is connected between the oil outlet of the oil separator and the suction side of the compressor. The electronic expansion valve is installed on the oil return capillary tube. The controller is connected to the compressor and the electronic expansion valve. The control method includes: Turn on the heating mode and detect the high-pressure value V1 and the low-pressure value V2 on both sides of the compressor; Transmit V1 and V2 to the controller, calculate the ratio of V1 to V2, and compare it with the preset high-pressure value u1, the preset low-pressure value u2, and the preset pressure ratio w stored in the controller; When V1 > u1, V2 < u2, and V1 / V2 > w, the basic opening N of the electronic expansion valve is increased by a preset value N1, and the opening of the electronic expansion valve is increased by N1 every t0 seconds, where V1 > V2 and u1 > u2; When any one of the conditions V1 < u1, V2 > u2, and V1 / V2 < x is satisfied, the opening of the electronic expansion valve is restored to the basic opening N, where w > x.

2. The method for controlling pulsating noise in an air conditioner according to claim 1, characterized in that, The air conditioner further includes a high-pressure detection sensor and a low-pressure detection sensor connected to the controller. The high-pressure detection sensor is installed on the exhaust side of the compressor, and the low-pressure detection sensor is installed on the suction side of the compressor. The step of "turn on the heating mode and detect the high-pressure value V1 and the low-pressure value V2 on both sides of the compressor" specifically includes: After the air conditioner turns on the heating mode, start the high-pressure detection sensor and the low-pressure detection sensor; Detect the high-pressure value V1 on the exhaust side of the compressor through the high-pressure detection sensor; Detect the low-pressure value V2 on the suction side of the compressor through the low-pressure detection sensor.

3. The method for controlling pulsating noise in an air conditioner according to claim 2, characterized in that, The step of "transmit V1 and V2 to the controller" specifically includes: Both the high-pressure detection sensor and the low-pressure detection sensor transmit the corresponding high-pressure value V1 and low-pressure value V2 to the controller every t1 seconds.

4. The method for controlling pulsating noise in an air conditioner according to claim 3, characterized in that, The step of "calculate the ratio of V1 to V2 and compare it with the preset high-pressure value u1, the preset low-pressure value u2, and the preset pressure ratio w stored in the controller" specifically includes: The controller calculates the ratio of V1 to V2 and compares V1, V2, and the ratio of V1 to V2 with the stored preset high-pressure value u1, the preset low-pressure value u2, and the preset pressure ratio w every t0 seconds, where 2t1 > t0 > t1.

5. The method for controlling pulsating noise in an air conditioner according to claim 4, characterized in that, The step of "when V1 > u1, V2 < u2, and V1 / V2 > w, the basic opening N of the electronic expansion valve is increased by a preset value N1, and the opening of the electronic expansion valve is increased by N1 every t0 seconds" specifically includes: When the controller compares and obtains V1 > u1, V2 < u2, and V1 / V2 > w, the basic opening N of the electronic expansion valve is increased for the first time, and the adjustment amplitude is the preset value N1; The controller makes a comparison every t0 seconds. If V1 > u1, V2 < u2, and V1 / V2 > w are maintained, the opening of the electronic expansion valve is increased by N1.

6. The method for controlling pulsating noise in an air conditioner according to claim 5, characterized in that, The step of "when any one of the conditions V1 < u1, V2 > u2, and V1 / V2 < x is satisfied, the opening of the electronic expansion valve is restored to the basic opening N" specifically includes: The controller makes a comparison every t0 seconds. If V1 < u1, or V2 > u2, or V1 / V2 < x occurs, the opening degree of the electronic expansion valve is restored to the basic opening degree N.

7. The method for controlling pulsating noise in an air conditioner according to claim 6, characterized in that, The control method further includes: when V1 > u1, V2 < u2, and w ≥ V1 / V2 ≥ x, keeping the opening degree of the electronic expansion valve unchanged.

8. The method for controlling the pulsating noise of an air conditioner according to any one of claims 1-7, characterized in that, The control method further includes: if during the entire detection process, the controller never obtains a comparison value of V1 > u1, V2 < u2, and V1 / V2 > w, the basic opening degree N of the electronic expansion valve remains unchanged.

9. An air conditioner, characterized in that, Comprising: A processor; A memory, the memory being adapted to store multiple program codes, the program codes being adapted to be loaded and run by the processor to execute the control method for the pulsating noise of the air conditioner according to any one of claims 1 to 8.

10. A computer-readable storage medium storing a plurality of program codes, characterized in that, The program codes are adapted to be loaded and run by the processor to execute the control method for the pulsating noise of the air conditioner according to any one of claims 1 to 8.

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