Compressor control method and device, air conditioning equipment and storage medium

Abstract

The invention discloses a compressor control method and device, air conditioning equipment and a storage medium, and the method comprises the steps that in the variable-frequency operation process of a compressor, the target operation frequency of the compressor is obtained; when the target operation frequency of the compressor is lower than the set frequency, the carrier frequency of the compressor is controlled to be within the first frequency range; the frequency point in the first frequency range is larger than the hearing frequency range of the user, the motion noise generated when the compressor operates at the frequency lower than the set frequency is smaller than the electromagnetic noise generated when the carrier frequency of the compressor is in the second frequency range, and the frequency point in the second frequency range is smaller than the frequency point in the first frequency range. The compressor is used for solving the technical problem that electromagnetic noise is obvious when the compressor operates at low frequency.

Description

Technical Field

[0001] The present invention belongs to the field of low-frequency technology, and in particular relates to a compressor control method, device, air-conditioning equipment and storage medium. Background Art

[0002] The compressor of the variable frequency air conditioner uses pulse width modulation technology to control the motor, so it will generate electromagnetic noise, which is high-frequency noise of the carrier frequency and integer multiples of the frequency. The electromagnetic noise will be transmitted through the motor housing and transmitted to the human ear, making the user feel annoyed. Electromagnetic noise is an important factor affecting the noise value of the whole machine, and it is also one of the main reasons for the poor hearing of users.

[0003] When the compressor of the variable frequency air conditioner is running at high frequency, the movement noise of the compressor (movement noise includes airflow noise and mechanical noise) is relatively large, which can cover up the electromagnetic noise. However, when the compressor is running at low frequency, due to the low speed, the movement noise of the compressor is relatively small, resulting in obvious electromagnetic noise felt by the user, and high-frequency electromagnetic noise makes the user's hearing worse. Summary of the invention

[0004] The present invention provides a compressor control method, device, air conditioning equipment and storage medium, which are used to solve the technical problem that the electromagnetic noise of the compressor is obvious when it runs at a low frequency.

[0005] In a first aspect of the present invention, a compressor control method is provided, comprising: during the variable frequency operation of the compressor, obtaining the target operating frequency of the compressor; in a time period when the target operating frequency of the compressor is lower than a set frequency, controlling the carrier frequency of the compressor to be within a first frequency range; wherein the frequency points within the first frequency range are greater than the frequency range of a user's hearing, the motion noise generated by the compressor operating below the set frequency is smaller than the electromagnetic noise generated by the carrier frequency of the compressor within a second frequency range, and the frequency points within the second frequency range are smaller than the frequency points within the first frequency range.

[0006] In combination with the first aspect, in some embodiments, after obtaining the operating frequency of the compressor, it also includes: in a time period when the target operating frequency of the compressor is not lower than the set frequency, controlling the carrier frequency of the compressor to be within the second frequency range.

[0007] In combination with the first aspect, in some embodiments, the controlling the carrier frequency of the compressor to be within a first frequency range includes: when the target operating frequency of the compressor changes from a state not lower than the set frequency to a state lower than the set frequency, gradually increasing the carrier frequency of the compressor to a first target frequency point within the first frequency range according to a first preset step size.

[0008] In combination with the first aspect, in some embodiments, controlling the carrier frequency of the compressor to be within a first frequency range further includes: after the carrier frequency of the compressor increases to the first target frequency point, controlling the carrier frequency of the compressor to dynamically change within the first frequency range.

[0009] In combination with the first aspect, in some embodiments, controlling the carrier frequency of the compressor to dynamically change within the first frequency range includes: injecting a white noise sequence into the carrier frequency of the compressor so that the carrier frequency of the compressor changes randomly within the first frequency range.

[0010] In combination with the first aspect, in some embodiments, the controlling the carrier frequency of the compressor to be within the second frequency range includes: when the target operating frequency of the compressor changes from a state lower than the set frequency to a state not lower than the set frequency, gradually reducing the carrier frequency of the compressor to a second target frequency point within the second frequency range according to a second preset step size.

[0011] In combination with the first aspect, in some implementations, the first frequency range is 17KHz to 19KHz; and the second frequency range is 3KHz to 10KHz.

[0012] In a second aspect of the present invention, a compressor control device is provided, comprising: a frequency acquisition unit, for acquiring a target operating frequency of the compressor during the variable frequency operation of the compressor; a first carrier frequency control unit, for controlling the carrier frequency of the compressor to be within a first frequency range during a time period when the target operating frequency of the compressor is lower than a set frequency; wherein the frequency points within the first frequency range are greater than the frequency range of a user's hearing, the motion noise generated by the compressor operating below the set frequency is smaller than the electromagnetic noise generated by the carrier frequency of the compressor within the second frequency range, and the frequency points within the second frequency range are smaller than the frequency points within the first frequency range.

[0013] In a third aspect of the present invention, an air conditioning device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the compressor control method described in any embodiment of the first aspect is implemented.

[0014] In a fourth aspect of the present invention, a computer-readable storage medium is provided, on which a computer program is stored, and when the program is executed by a processor, the compressor control method described in any embodiment of the first aspect is implemented.

[0015] According to one or more embodiments provided by the present invention, at least the following technical effects or advantages are achieved:

[0016] The target operating frequency of the compressor is obtained during the variable frequency operation of the compressor; in the time period when the target operating frequency of the compressor is lower than the set frequency, the carrier frequency of the compressor is controlled to be within the first frequency range; the frequency point in the first frequency range is greater than the frequency range of the user's hearing, and the motion noise generated by the compressor running below the set frequency is less than the electromagnetic noise generated by the carrier frequency of the compressor within the second frequency range, and the frequency point in the second frequency range is less than the frequency point in the first frequency range. The target operating frequency of the compressor is lower than the set frequency, which means that the compressor is running at a low frequency. The main noise when the compressor is running at a low frequency is electromagnetic noise. At this time, by controlling the carrier frequency of the compressor to be within the first frequency range that is greater than the user's hearing frequency range, the user cannot hear the electromagnetic noise. Thereby, the electromagnetic sound hazard of the compressor when running at a low frequency is improved, and the user experience is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 is a flow chart of a compressor control method according to an embodiment of the present invention;

[0019] Figure 2 is a schematic diagram of a carrier frequency of a compressor randomly changing within a first frequency range in an embodiment of the present invention;

[0020] Figure 3 An execution logic of the compressor control method in an embodiment of the present invention is shown;

[0021] Figure 4 Schematic diagram of the structure of a compressor control device in an embodiment of the present invention;

[0022] Figure 5 Schematic diagram of the structure of the air conditioning device in the embodiment of the present invention. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0025] The present invention provides a compressor control method, which is applied to an electrical device having a compressor, wherein the electrical device may be a variable frequency air conditioner, a variable frequency refrigerator or a heat pump water heater. Figure 1 FIG. 1 is a flow chart of a compressor control method according to an embodiment of the present invention. Figure 1 As shown, the compressor control method includes the following steps S101 to S103:

[0026] S101: During the variable frequency operation of the compressor, the target operating frequency of the compressor is obtained.

[0027] It should be understood that as the temperature of the area where the electrical equipment works changes, the temperature difference between the temperature of the area where the electrical equipment works and the temperature set by the user changes accordingly, and the target operating frequency of the compressor changes dynamically within a certain frequency range following the temperature difference change. Taking the variable frequency air conditioner as an example, the indoor temperature is obtained, and the target operating frequency of the compressor is determined based on the indoor temperature and the user-set temperature. It should be noted that in the relevant technology, the target operating frequency will be used to adjust the operating frequency of the compressor so that the indoor temperature reaches the user-set temperature.

[0028] As the target operating frequency of the compressor changes dynamically, it may be lower than the set frequency at times and greater than or equal to the set frequency at times. Therefore, in some embodiments of the present invention, the carrier frequency of the compressor may be different according to the magnitude relationship between the target operating frequency of the compressor and the set frequency, as shown in the following steps S102 and S103.

[0029] S102: In the time period when the target operating frequency of the compressor is lower than the set frequency, the carrier frequency of the compressor is controlled to be within a first frequency range, wherein the frequency points within the first frequency range are greater than the frequency range of the user's hearing, the motion noise generated by the compressor operating below the set frequency is smaller than the electromagnetic noise generated by the carrier frequency of the compressor within the second frequency range, and the frequency points within the second frequency range are smaller than the frequency points within the first frequency range.

[0030] It should be noted that the frequency range of hearing of the vast majority of people is 20Hz to 13kHz, of which 1kHz to 13kHz is a sharp sound felt by the human ear, which is seriously damaging to the human ear. Therefore, the lower limit frequency point of the first frequency range is greater than 13kHz. For people of lower age groups such as children, higher frequency noises can be heard. Therefore, the lower limit frequency point of the first frequency range can be appropriately increased to prevent people of lower age groups from being disturbed by electromagnetic noise. For example, the lower limit frequency point of the first frequency range can be set to 17kHz. On this basis, the upper limit frequency point of the first frequency range can also be limited to avoid the carrier frequency being too large and affecting the energy efficiency of the compressor's drive system. Based on the above purpose, in some embodiments, the first frequency range can be set to 17kHz to 19kHz. Such a first frequency range not only improves the electromagnetic noise of the compressor when it is running at a low frequency, but also minimizes the impact on the energy efficiency of the compressor's drive system.

[0031] According to one or more embodiments of the present invention, during the low-frequency operation stage of the compressor, the carrier frequency of the compressor is controlled within a first frequency range greater than the user's auditory frequency range, so that the user cannot hear the electromagnetic noise. Thus, the electromagnetic sound hazard of the compressor during low-frequency operation is improved, and the user experience is improved.

[0032] It is understandable that, since the target operating frequency of the compressor is dynamically changing, therefore, in some embodiments, step S103 may also be included: in the time period when the target operating frequency of the compressor is not lower than the set frequency, the carrier frequency of the compressor is controlled to be within the second frequency range. In some embodiments, the second frequency range is 3KHz to 10KHz. Although the second frequency range is within the frequency range of human hearing, since the motion noise generated by the compressor running at a frequency not lower than the set frequency is greater than the electromagnetic noise of the compressor, the main noise is no longer electromagnetic noise, and the user will basically not feel the electromagnetic noise. By reducing the carrier frequency of the compressor to the second frequency range, rather than continuing in the first frequency range, the energy efficiency of the compressor drive system can be developed to the best.

[0033] It is understandable that, in the time period when the target operating frequency is not lower than the set frequency, the carrier frequency of the compressor can be controlled to be fixed at the second target frequency point within the second frequency range to improve the stability of the compressor operation. In the specific implementation process, a suitable second target frequency point is selected within the second frequency range according to actual needs. It should be noted that, for the same compressor, the second target frequency point is a pre-set fixed frequency point, such as any one of 3KHz, 6KHz or 10KHz. In each time period when the target operating frequency of the compressor is not lower than the set frequency, the second target frequency point uses the same fixed frequency point. For example, each time in the time period when the target operating frequency is not lower than the set frequency, the carrier frequency of the compressor can be controlled to be fixed at 6KHz.

[0034] In some embodiments, controlling the carrier frequency of the compressor to be within the first frequency range may include: when the target operating frequency of the compressor changes from a state not lower than the set frequency to a state lower than the set frequency, gradually increasing the carrier frequency of the compressor to a first target frequency point within the first frequency range according to a first preset step length. By gradually increasing the carrier frequency of the compressor, a smooth adjustment of the carrier frequency is achieved, and the stability of the compressor operation is improved. It is understandable that during the variable frequency operation of the compressor, the target operating frequency of the compressor can be continuously obtained at preset time intervals; based on the target operating frequencies obtained twice adjacently, it is determined whether the target operating frequency of the compressor has changed from a state not lower than the set frequency to a state lower than the set frequency; if so, triggering the step of gradually increasing the carrier frequency of the compressor to the first target frequency point within the first frequency range according to the first preset step length, so that the carrier frequency of the compressor gradually increases from the second target frequency point to the first target frequency point.

[0035] In some embodiments, the first target frequency point can be preset to any fixed frequency point in the first frequency range, for example, taking the first frequency range of 17kHz to 19kHz as an example, the first target frequency point can be preset to 18KHz. Then, when the target operating frequency of the compressor changes to a state lower than the set frequency, the carrier frequency of the compressor is triggered to gradually increase to 18KHz.

[0036] It is understandable that the first preset step size can be set as the amount of increase in the carrier frequency per unit time length according to actual needs. For example, the first preset step size can be to increase the carrier frequency by 0.15KHz every 100 milliseconds or to increase the carrier frequency by 0.2KHz every 200 milliseconds. However, this document does not limit the specific value of the first preset step size.

[0037] It is understandable that the set frequency is the frequency point at which the compressor runs at a low frequency, which can be determined and written in advance. The variable frequency operation of the compressor can be tested when the carrier frequency of the compressor is at the second target frequency point. As the operating frequency of the compressor decreases, the motion noise of the compressor will decrease accordingly. The operating frequency of the compressor when the operating noise of the compressor is equivalent to the electromagnetic noise can be used as the set frequency.

[0038] In some embodiments, after the carrier frequency of the compressor is increased to the first target frequency point, the first target frequency point may be maintained fixed. Taking the first target frequency point as 18KHz as an example, after the carrier frequency of the compressor is gradually increased to 18KHz, it no longer continues to increase, but remains constant at 18KHz and does not change.

[0039] In other embodiments, after the carrier frequency of the compressor is increased to the first target frequency point, the carrier frequency of the compressor can be controlled to change dynamically within the first frequency range. It is understandable that the carrier frequency of the compressor can be randomly changed within the first frequency range by injecting a white noise sequence into the carrier frequency of the compressor, thereby evenly distributing the energy and improving the noise peak. Figure 2 FIG. 1 is a schematic diagram showing that the carrier frequency of the compressor in the embodiment of the present invention randomly changes within the first frequency range. Figure 2 As shown in FIG. 1 , the white noise sequence can be a random number sequence that conforms to a normal distribution and has a random number value between 0 and 2 KHz. At each moment, the random number of the random number sequence at that moment is added to the base frequency to obtain the carrier frequency of the compressor at that moment. The random number is represented by Xi, and the base frequency is 17 KHz. The carrier frequency at any moment is 17+X i , so that the carrier frequency of the compressor changes randomly within the frequency range of 17KHz to 19KHz after reaching 18KHz, thereby improving the noise peak.

[0040] In some embodiments, controlling the carrier frequency of the compressor to be within the second frequency range may include: when the target operating frequency of the compressor changes to a state not lower than the set frequency, gradually reducing the carrier frequency of the compressor to a second target frequency point within the second frequency range according to a second preset step. By gradually reducing the carrier frequency, smooth adjustment of the carrier frequency is achieved, and the stability of the compressor operation is improved. It is understandable that the second preset step can use the same or different step value as the first preset step. It is understandable that during the variable frequency operation of the compressor, based on the target operating frequencies obtained twice adjacently, it is determined whether the target operating frequency of the compressor changes from a state not lower than the set frequency to a state lower than the set frequency; if so, triggering the execution of the step of gradually reducing the carrier frequency of the compressor to a second target frequency point within the second frequency range according to the second preset step, so that the carrier frequency of the compressor gradually increases from the current frequency point within the first frequency range to the second target frequency point, and remains at the second target frequency point after increasing to the second target frequency point.

[0041] Taking the first target frequency point as 18KHz and the second target frequency point as 6KHz as an example, if the target operating frequency of the compressor changes to a state not lower than the set frequency when the carrier frequency of the compressor randomly changes to 17.5KHz, the carrier frequency of the compressor is triggered to gradually decrease from 17.5KHz to 6KHz, and after decreasing to 6KHz, it is maintained at 6KHz and no longer changes until the target operating frequency of the compressor changes to a state lower than the set frequency, triggering the carrier frequency of the compressor to gradually increase from 6KHz to 18kHz.

[0042] Figure 3 An execution logic of the compressor control method in the embodiment of the present invention is shown. In order to facilitate understanding of the compressor control method provided by the present invention, the following reference Figure 3 , taking a variable frequency air conditioner as an example, a control logic of the compressor control method provided by the present invention is given:

[0043] Step S1: During the variable frequency operation of the variable frequency air conditioner, the target operating frequency of the compressor of the variable frequency air conditioner is continuously obtained at preset time intervals.

[0044] Step S2: After obtaining the target operating frequency of the compressor twice in a row, compare the target operating frequency of the compressor obtained for the current time with the set frequency; if the target operating frequency obtained for the current time is lower than the set frequency, and the target operating frequency obtained for the last time is not lower than the set frequency, proceed to step S3; if the target operating frequency obtained for the current time is greater than or equal to the set frequency, and the target operating frequency obtained for the last time is lower than the set frequency, proceed to step S4.

[0045] Step S3: increasing the carrier frequency of the compressor from the second target frequency point to the first target frequency point according to a first preset step size; and after the carrier frequency of the compressor is increased to the first target frequency point, injecting a white noise sequence into the carrier frequency of the compressor, so that during the time period when the target operating frequency of the compressor is lower than the set frequency, the carrier frequency of the compressor changes randomly within the first frequency range.

[0046] Step S4: gradually reduce the carrier frequency of the compressor from the current frequency point within the first frequency range to the second target frequency point according to the second preset step size; and during the time period when the target operating frequency of the compressor is not lower than the set frequency, the carrier frequency of the compressor is maintained fixed at the second target frequency point.

[0047] Based on the same inventive concept, the present invention also provides a compressor control device. Figure 4 Schematic diagram of the structure of the compressor control device in an embodiment of the present invention. Figure 4 FIG. 1 is a schematic diagram of the structure of a compressor control device according to an embodiment of the present invention. Figure 4 As shown, the compressor control device includes: a frequency acquisition unit 401, used to acquire the target operating frequency of the compressor during the variable frequency operation of the compressor; a first carrier frequency control unit 402, used to control the carrier frequency of the compressor to be within a first frequency range during a time period when the target operating frequency of the compressor is lower than the set frequency; wherein the frequency points within the first frequency range are greater than the frequency range of the user's hearing, the motion noise generated by the compressor operating below the set frequency is smaller than the electromagnetic noise generated by the carrier frequency of the compressor within the second frequency range, and the frequency points within the second frequency range are smaller than the frequency points within the first frequency range.

[0048] In some embodiments, the compressor control device further includes: a second carrier frequency control unit, which controls the carrier frequency of the compressor to be within the second frequency range during a time period when the target operating frequency of the compressor is not lower than the set frequency.

[0049] In some embodiments, the first carrier frequency control unit 402 may include: a frequency increase subunit, which is used to gradually increase the carrier frequency of the compressor to a first target frequency point within the first frequency range according to a first preset step size when the target operating frequency of the compressor changes from a state not lower than the set frequency to a state lower than the set frequency.

[0050] In some implementations, the first carrier frequency control unit 402 may further include: a dynamic control subunit, configured to control the carrier frequency of the compressor to dynamically change within the first frequency range after the carrier frequency of the compressor increases to the first target frequency point.

[0051] In some implementations, the dynamic control subunit is specifically configured to: inject a white noise sequence into the carrier frequency of the compressor so that the carrier frequency of the compressor varies randomly within the first frequency range.

[0052] In some embodiments, the second carrier frequency control unit 403 may include: a frequency reduction unit, used to gradually reduce the carrier frequency of the compressor to a second target frequency point within the second frequency range according to a second preset step size when the target operating frequency of the compressor changes from a state lower than the set frequency to a state not lower than the set frequency.

[0053] In some embodiments, the first frequency range may be 17 KHz to 19 KHz; and the second frequency range may be 3 KHz to 10 KHz.

[0054] The aforementioned compressor control device can be used to implement the aforementioned compressor control method. More implementation details of the compressor control device can refer to the aforementioned compressor control method, and for the sake of brevity of the specification, they will not be repeated here.

[0055] Based on the same inventive concept, the present invention also provides an air conditioning device. Figure 5 FIG. 2 shows a schematic diagram of the structure of an air conditioning device in an embodiment of the present invention. Figure 5 As shown, the air conditioning device may include: a memory 504, a processor 502, and a computer program stored in the memory 504 and executable on the processor 502. When the processor 502 executes the program, the compressor control method of any of the aforementioned embodiments is implemented.

[0056] Among them, Figure 5 In the embodiment of the present invention, a bus architecture (represented by bus 500) is shown, which may include any number of interconnected buses and bridges, and bus 500 links various circuits including one or more processors represented by processor 502 and memory represented by memory 504. Bus 500 may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. Bus interface 505 provides an interface between bus 500 and receiver 501 and transmitter 503. Receiver 501 and transmitter 503 may be the same element, namely a transceiver, providing a unit for communicating with various other devices over a transmission medium. Processor 502 is responsible for managing bus 500 and general processing, while memory 504 may be used to store data used by processor 502 when performing operations.

[0057] Based on the same inventive concept, the present invention further provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the compressor control method described in any of the aforementioned embodiments is implemented.

[0058] Although some embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the present invention.

[0059] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A compressor control method, characterized in that: include: During the variable frequency operation of the compressor, obtaining a target operating frequency of the compressor; During a time period when the target operating frequency of the compressor is lower than a set frequency, controlling the carrier frequency of the compressor to be within a first frequency range; Among them, the frequency points in the first frequency range are greater than the frequency range of user hearing, the motion noise generated by the compressor running below the set frequency is smaller than the electromagnetic noise generated by the carrier frequency of the compressor within the second frequency range, and the frequency points in the second frequency range are smaller than the frequency points in the first frequency range.

2. The method according to claim 1, characterized in that After obtaining the operating frequency of the compressor, it also includes: During a time period when the target operating frequency of the compressor is not lower than the set frequency, the carrier frequency of the compressor is controlled to be within the second frequency range.

3. The method according to claim 2, characterized in that The controlling the carrier frequency of the compressor to be within a first frequency range comprises: When the target operating frequency of the compressor changes from a state not lower than the set frequency to a state lower than the set frequency, the carrier frequency of the compressor is gradually increased to a first target frequency point within the first frequency range according to a first preset step.

4. The method according to claim 3, characterized in that The controlling the carrier frequency of the compressor to be within a first frequency range further comprises: After the carrier frequency of the compressor increases to the first target frequency point, the carrier frequency of the compressor is controlled to dynamically change within the first frequency range.

5. The method according to claim 4, characterized in that The controlling the carrier frequency of the compressor to dynamically change within the first frequency range comprises: A white noise sequence is injected into the carrier frequency of the compressor so that the carrier frequency of the compressor varies randomly within the first frequency range.

6. The method according to claim 2, characterized in that The step of controlling the carrier frequency of the compressor to be within the second frequency range comprises: When the target operating frequency of the compressor changes from a state lower than the set frequency to a state not lower than the set frequency, the carrier frequency of the compressor is gradually reduced to a second target frequency point within the second frequency range according to a second preset step.

7. The method according to any one of claims 1 to 6, characterized in that: The first frequency range is 17KHz to 19KHz; and The second frequency range is 3KHz to 10KHz.

8. A compressor control device, characterized in that: include: A frequency acquisition unit, used to acquire a target operating frequency of the compressor during the variable frequency operation of the compressor; a first carrier frequency control unit, configured to control the carrier frequency of the compressor to be within a first frequency range during a time period when the target operating frequency of the compressor is lower than a set frequency; Among them, the frequency points in the first frequency range are greater than the frequency range of user hearing, the motion noise generated by the compressor running below the set frequency is smaller than the electromagnetic noise generated by the carrier frequency of the compressor within the second frequency range, and the frequency points in the second frequency range are smaller than the frequency points in the first frequency range.

9. An air conditioning device, characterized in that: The method comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the compressor control method according to any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the compressor control method described in any one of claims 1 to 7 is implemented.

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