Compressor, control method, device, controller, air conditioner and medium thereof

Abstract

The application discloses a compressor and a control method, device, controller and medium thereof, and relates to the technical field of air conditioners. The method comprises the following steps: in the case that the air conditioner operates in a refrigeration mode, determining that the air conditioner satisfies a preset frequency adjustment condition, and determining the operating frequency of the compressor according to the exhaust temperature of the compressor. The control method of the application reduces the low-frequency operation lower limit when the exhaust temperature of the compressor is sufficient, that is, allows the compressor to further reduce the operating frequency, and raises the low-frequency operation lower limit when the exhaust temperature of the compressor is insufficient, that is, raises the operating frequency of the compressor. In this way, the stable operation of the sliding vane can be ensured to the greatest extent, and the generation of the sliding vane abnormal sound can be avoided as much as possible.

Description

Technical Field

[0001] This invention relates to the field of air conditioner technology, and in particular to a compressor control method, a compressor control device, a computer-readable storage medium, a controller, a compressor, and an air conditioner. Background Technology

[0002] Once the room reaches the set temperature, the air conditioner compressor will run at a lower frequency. When the air conditioner runs at a low frequency for a long time, the compressor exhaust temperature will drop significantly, resulting in a narrowing of the pressure difference between the exhaust pressure and the return pressure. This will cause the sliding vanes inside the compressor to be unstable during low-frequency operation, causing them to float up and down and produce abnormal noise. Moreover, the noise from the sliding vanes is quite penetrating and cannot be masked by sound insulation cotton.

[0003] In related technologies, solving the noise problem by increasing the pressure difference between exhaust pressure and return pressure has certain limitations in terms of mechanism, such as mechanical design limitations, thermal constraints, energy efficiency and power consumption, system stability and reliability, etc. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, the first objective of this invention is to provide a compressor control method that, when the air conditioner is operating in cooling mode, determines that the air conditioner meets preset frequency adjustment conditions and determines the compressor's operating frequency based on the compressor's exhaust temperature. The control method of this invention lowers the low-frequency operating limit when the compressor's exhaust temperature is sufficient, allowing the compressor to further reduce its operating frequency; conversely, when the compressor's exhaust temperature is insufficient, it raises the low-frequency operating limit, increasing the compressor's operating frequency. This, to a certain extent, ensures stable operation of the sliding vanes and minimizes the generation of vane noise.

[0005] The second objective of this invention is to provide a control device for a compressor.

[0006] A third objective of this invention is to provide a computer-readable storage medium.

[0007] The fourth objective of this invention is to provide a controller.

[0008] The fifth objective of this invention is to provide a compressor.

[0009] The sixth objective of this invention is to provide an air conditioner.

[0010] To achieve the above objectives, a first aspect of the present invention provides a compressor control method, the method comprising: determining that the air conditioner meets preset frequency adjustment conditions when the air conditioner is operating in cooling mode; and determining the operating frequency of the compressor based on the compressor's exhaust temperature.

[0011] According to one embodiment of the present invention, determining that an air conditioner meets the frequency adjustment conditions includes: determining that the air conditioner meets the frequency adjustment conditions when the air conditioner operates in cooling mode for a duration of a first preset time, or when the operating frequency of the compressor reaches a first preset frequency, wherein the first preset frequency is determined based on the operating frequency of the compressor when the sliding vane makes an abnormal noise.

[0012] According to one embodiment of the present invention, determining the operating frequency of the compressor based on the compressor's exhaust temperature includes: controlling the compressor to operate at a first preset frequency and for a second preset time when the compressor's exhaust temperature is less than or equal to a first exhaust temperature threshold; wherein the first exhaust temperature threshold is determined based on the compressor's exhaust temperature when the vane produces abnormal noise.

[0013] According to one embodiment of the present invention, determining the operating frequency of the compressor based on the compressor's exhaust temperature further includes: controlling the compressor to operate at a second preset frequency when the compressor's exhaust temperature is greater than a second exhaust temperature threshold; wherein the second exhaust temperature threshold is greater than a first exhaust temperature threshold, and the second preset frequency is less than the first preset frequency.

[0014] According to one embodiment of the present invention, determining the operating frequency of the compressor based on the compressor's exhaust temperature further includes: maintaining the operating frequency of the compressor unchanged when the compressor's exhaust temperature is greater than a first exhaust temperature threshold and less than or equal to a second exhaust temperature threshold.

[0015] According to one embodiment of the present invention, the control method further includes: adjusting the opening degree of the electronic expansion valve of the outdoor unit, and / or adjusting the speed of the outdoor fan.

[0016] According to one embodiment of the present invention, adjusting the opening degree of the electronic expansion valve of the outdoor unit includes: reducing the opening degree of the electronic expansion valve and limiting the upper limit of the opening degree of the electronic expansion valve.

[0017] According to one embodiment of the present invention, adjusting the speed of an outdoor fan includes: controlling the outdoor fan to operate at a preset minimum speed.

[0018] To achieve the above objectives, a second aspect of the present invention provides a compressor control device, comprising: a first determining module, configured to determine that the air conditioner meets preset frequency adjustment conditions when the air conditioner is operating in cooling mode; and a second determining module, configured to determine the operating frequency of the compressor based on the compressor's exhaust temperature.

[0019] To achieve the above objectives, a third aspect of the present invention provides a computer-readable storage medium storing a compressor control program thereon, which, when executed by a processor, implements the aforementioned compressor control method.

[0020] To achieve the above objectives, a fourth aspect of the present invention provides a controller, including a memory, a processor, and a compressor control program stored in the memory and executable on the processor. When the processor executes the compressor control program, it implements the aforementioned compressor control method.

[0021] To achieve the above objectives, a fifth aspect of the present invention provides a compressor, including a memory, a processor, and a compressor control program stored in the memory and executable on the processor. When the processor executes the compressor control program, it implements the aforementioned compressor control method.

[0022] To achieve the above objectives, a sixth aspect of the present invention provides an air conditioner, including the aforementioned controller, or the aforementioned compressor, or the aforementioned compressor control device.

[0023] According to embodiments of the present invention, a compressor, control method, device, controller, air conditioner, and medium are used to determine that the air conditioner meets preset frequency adjustment conditions when operating in cooling mode, and the operating frequency of the compressor is determined based on the compressor's discharge temperature. The control method of the present invention lowers the low-frequency operating limit when the compressor's discharge temperature is sufficient, allowing the compressor to further reduce its operating frequency; conversely, it raises the low-frequency operating limit when the compressor's discharge temperature is insufficient, thus increasing the compressor's operating frequency. This, to a certain extent, ensures stable operation of the sliding vanes and minimizes the generation of vane noise. Attached Figure Description

[0024] Figure 1 A flowchart of a compressor control method according to some embodiments of the present invention;

[0025] Figure 2 A flowchart of a compressor control method according to other embodiments of the present invention;

[0026] Figure 3 This is a block diagram of a compressor control device according to some embodiments of the present invention;

[0027] Figure 4 This is a block diagram of a controller according to some embodiments of the present invention;

[0028] Figure 5 This is a block diagram of a compressor according to some embodiments of the present invention. Detailed Implementation

[0029] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0030] The following describes in detail, with reference to the accompanying drawings, the compressor and its control method, device, controller, air conditioner and medium of the present invention.

[0031] Figure 1 This is a flowchart of a compressor control method according to some embodiments of the present invention. (Refer to...) Figure 1 The compressor control method of this application embodiment may include the following steps:

[0032] S110, when the air conditioner is operating in cooling mode, determine that the air conditioner meets the preset frequency adjustment conditions.

[0033] Specifically, after an air conditioner has been running in cooling mode for a period of time, the compressor will operate at a relatively low frequency, resulting in a significant drop in compressor exhaust temperature. This causes the compressor's internal sliding vanes to become unstable during low-frequency operation, leading to abnormal noise from the vanes. Therefore, when the air conditioner is running in cooling mode, it is necessary to determine whether the air conditioner meets the preset frequency adjustment conditions. If the air conditioner meets the preset frequency adjustment conditions, the compressor frequency should be adjusted, for example, by controlling the compressor to operate at a frequency that does not produce sliding vane noise, thereby avoiding the noise to some extent. If the air conditioner does not meet the preset frequency adjustment conditions, there is no need to adjust the compressor frequency.

[0034] S120 determines the compressor's operating frequency based on the compressor's discharge temperature.

[0035] Specifically, fin noise is more likely to occur at lower exhaust temperatures, but not at higher exhaust temperatures. Therefore, assuming the air conditioner meets the preset frequency adjustment conditions, the compressor's exhaust temperature is obtained. For example, the compressor's exhaust temperature can be detected by a temperature sensor installed at the compressor's exhaust port or on the pipeline. The compressor's operating frequency is then determined based on the compressor's exhaust temperature.

[0036] For example, if the compressor's exhaust temperature is detected to be low, it indicates that the air conditioner may produce abnormal noise from the sliding fins. In this case, the compressor is controlled to operate at a frequency that will not produce abnormal noise from the sliding fins. If the compressor's exhaust temperature is detected to be high, it indicates that the probability of the air conditioner producing abnormal noise from the sliding fins is low. In this case, the operating frequency of the compressor can be further reduced according to the control requirements.

[0037] The control method of this invention lowers the low-frequency operating limit when the compressor's exhaust temperature is sufficient, allowing the compressor to further reduce its operating frequency; conversely, it raises the low-frequency operating limit when the compressor's exhaust temperature is insufficient, increasing the compressor's operating frequency. This, to a certain extent, ensures stable operation of the sliding vanes and minimizes the generation of abnormal vane noise.

[0038] In some embodiments, determining that the air conditioner meets the frequency adjustment conditions includes: determining that the air conditioner meets the frequency adjustment conditions when the air conditioner operates in cooling mode for a duration of a first preset time, or when the compressor operates at a frequency of a first preset frequency, wherein the first preset frequency is determined based on the compressor operating frequency when the sliding vane makes an abnormal noise.

[0039] Specifically, whether the air conditioner meets the preset frequency adjustment conditions can be determined by judging whether the air conditioner has been running in cooling mode for a certain period of time or whether the compressor's operating frequency has reached a certain preset frequency. The first preset frequency refers to the operating frequency at which the air conditioner does not produce abnormal noise from the fins, and can be determined based on the compressor's operating frequency when abnormal noise occurs from the fins. The first preset time is determined based on actual conditions and is not specifically limited here.

[0040] For example, if the air conditioner operates in cooling mode for a duration of a first preset time, or the compressor's operating frequency reaches a first preset frequency, it indicates that the air conditioner compressor's operating frequency is already low, which may cause abnormal noise from the sliding fins. In this case, the air conditioner is determined to meet the frequency adjustment conditions, and the compressor's operating frequency needs to be determined based on the compressor's exhaust temperature. Otherwise, the air conditioner is determined not to meet the frequency adjustment conditions, and it is not necessary to determine the compressor's operating frequency based on the compressor's exhaust temperature.

[0041] In some embodiments, determining the compressor's operating frequency based on the compressor's discharge temperature includes: controlling the compressor to operate at a first preset frequency for a second preset time when the compressor's discharge temperature is less than or equal to a first discharge temperature threshold; wherein the first discharge temperature threshold is determined based on the compressor's discharge temperature when abnormal noise occurs in the vane. The first preset frequency is greater than the compressor's minimum permissible operating frequency, and the second preset time is determined based on actual conditions and is not specifically limited here.

[0042] For example, if the compressor's exhaust temperature is less than or equal to the first exhaust temperature threshold, it means that the air conditioner compressor's exhaust temperature is low at this time, and it is very likely to produce sliding fin noise. Then, the compressor is controlled to run at the first preset frequency, that is, the compressor is controlled to run at a frequency that will not produce sliding fin noise, and this continues for the second preset time.

[0043] In some embodiments, determining the operating frequency of the compressor based on the compressor's exhaust temperature further includes: controlling the compressor to operate at a second preset frequency when the compressor's exhaust temperature is greater than a second exhaust temperature threshold; wherein the second exhaust temperature threshold is greater than a first exhaust temperature threshold, and the second preset frequency is less than the first preset frequency.

[0044] For example, if the compressor's exhaust temperature is greater than the second exhaust temperature threshold, it means that the compressor's exhaust temperature is high at this time, and the probability of generating abnormal noise from the sliding vanes is low. Therefore, the operating frequency of the compressor can be further reduced according to the control requirements, that is, the compressor can be controlled to operate at a frequency lower than the first preset frequency, such as controlling the compressor to operate at the second preset frequency.

[0045] In summary, if the compressor's discharge temperature is less than or equal to the first discharge temperature threshold, the compressor needs to be controlled to run at a first preset frequency (a frequency that will not produce fin noise) for a second preset time. Further reduction in the compressor's operating frequency is not permitted. This not only improves the fin noise but also helps increase the discharge temperature. The compressor's operating frequency can only be further reduced if the discharge temperature is greater than the second discharge temperature threshold. If the compressor is controlled to run at the first preset frequency when its discharge temperature is less than or equal to the first discharge temperature threshold, but a further reduction in the compressor's operating frequency is required based on control needs, the compressor's discharge temperature must be increased until it exceeds the second discharge temperature threshold before a further reduction in the compressor's operating frequency is permitted.

[0046] In some embodiments, determining the operating frequency of the compressor based on the compressor's discharge temperature further includes: maintaining the compressor's operating frequency unchanged when the compressor's discharge temperature is greater than a first discharge temperature threshold and less than or equal to a second discharge temperature threshold.

[0047] For example, if the compressor is controlled to run at a first preset frequency for a period of time, and the discharge temperature of the compressor is detected to be greater than a first discharge temperature threshold and less than or equal to a second discharge temperature threshold, then the compressor is controlled to continue running at the first preset frequency. If the compressor is controlled to run at a second preset frequency for a period of time, and the discharge temperature of the compressor is detected to be greater than the first discharge temperature threshold and less than or equal to the second discharge temperature threshold, then the compressor is controlled to continue running at the second preset frequency.

[0048] In some embodiments, the control method further includes: adjusting the opening of the electronic expansion valve of the outdoor unit, and / or adjusting the speed of the outdoor fan.

[0049] Specifically, after determining that the air conditioner meets the preset frequency adjustment conditions, the opening of the electronic expansion valve of the outdoor unit can be adjusted, or the speed of the outdoor fan can be adjusted, or the opening of the electronic expansion valve and the speed of the outdoor fan can be adjusted simultaneously, after the compressor is controlled to run at the first preset frequency or the compressor is controlled to run at the second preset frequency, so as to increase the exhaust temperature of the compressor.

[0050] In some embodiments, adjusting the opening of the electronic expansion valve of the outdoor unit includes: reducing the opening of the electronic expansion valve and limiting the upper limit of the opening of the electronic expansion valve.

[0051] Specifically, the smaller the opening of the electronic expansion valve in the outdoor unit, the less refrigerant flows through it, and the higher the compressor's discharge temperature. Therefore, reducing the opening of the electronic expansion valve can increase the compressor's discharge temperature.

[0052] In addition, the upper limit of the opening of the electronic expansion valve should be limited, which can, to some extent, prevent the compressor's exhaust temperature from dropping due to excessive opening of the electronic expansion valve, thus avoiding abnormal noise from the sliding vanes.

[0053] In some embodiments, adjusting the speed of the outdoor fan includes controlling the outdoor fan to operate at a preset minimum speed.

[0054] Specifically, the lower the rotational speed of the outdoor fan, the lower the fan speed, the higher the refrigerant temperature, and the higher the compressor's exhaust temperature. Therefore, controlling the outdoor fan to operate at a preset minimum speed can increase the compressor's exhaust temperature.

[0055] In this way, by adjusting the opening of the electronic expansion valve of the outdoor unit and / or adjusting the speed of the outdoor fan, the exhaust temperature of the compressor can be increased, which is beneficial to controlling the stable operation of the vane and improving the vane noise when the compressor is running at a lower frequency.

[0056] Furthermore, when outdoor temperatures are low, exhaust temperatures are often low due to the influence of outdoor temperatures. In this case, adding multiple control strategies to increase exhaust temperature cannot solve the low-frequency sliding vane noise problem. Therefore, under low outdoor temperature conditions, if the compressor's exhaust temperature is detected to be less than or equal to a first exhaust temperature threshold, the compressor is controlled to operate at a first preset frequency. The sliding vane of the compressor can operate more stably at this frequency, which can avoid sliding vane noise to a certain extent.

[0057] As a specific example, the compressor control method of this application embodiment may further include the following steps:

[0058] S201, the air conditioner is operating in cooling mode.

[0059] S202, determine whether the air conditioner meets the preset frequency adjustment conditions. If yes, proceed to S204; otherwise, proceed to S203.

[0060] For example, it can be determined whether the air conditioner meets the preset frequency adjustment conditions by judging whether the duration of the air conditioner's operation in cooling mode reaches the first preset time, or by judging whether the compressor's operating frequency reaches the first preset frequency.

[0061] S203, keep the original control algorithm running.

[0062] S204, reduce the opening of the electronic expansion valve of the outdoor unit, and / or control the outdoor fan to operate at a preset minimum speed.

[0063] S205, determine whether the compressor's exhaust temperature is less than or equal to the first exhaust temperature threshold. If yes, proceed to S206; otherwise, proceed to S203.

[0064] S206, control the compressor to run at a first preset frequency for a second preset time.

[0065] S207, determine whether the compressor's exhaust temperature is greater than the second exhaust temperature threshold. If yes, proceed to S208; otherwise, proceed to S206.

[0066] S208 controls the compressor to operate at a second preset frequency.

[0067] In summary, the control method of this invention lowers the low-frequency operating limit when the compressor's exhaust temperature is sufficient, allowing the compressor to further reduce its operating frequency. Conversely, it raises the low-frequency operating limit when the compressor's exhaust temperature is insufficient, thus increasing the compressor's operating frequency. This ensures stable operation of the sliding vanes to a certain extent and minimizes the generation of abnormal vane noise. Since the temperature difference between the bottom of the compressor and the middle of the condenser is directly proportional to the compressor's exhaust temperature, and the lower the frequency, the slower the rate of decrease in the temperature difference between the bottom of the compressor and the middle of the condenser, this invention determines the low-frequency operating limit of the compressor based on the compressor's exhaust temperature. This ensures a relatively large temperature difference between the bottom of the compressor and the middle of the condenser at low frequencies, thereby improving the reliability of the air conditioner.

[0068] In addition, adjusting the opening of the electronic expansion valve of the outdoor unit and / or adjusting the speed of the outdoor fan can increase the compressor's exhaust temperature, which helps to control the stable operation of the sliding vanes and improve the sliding vane noise when the compressor operates at a lower frequency. However, when the outdoor temperature is low, the exhaust temperature is often low due to the influence of the outdoor temperature. In this case, adding multiple exhaust temperature boosting control strategies cannot solve the low-frequency sliding vane noise problem. Therefore, under low outdoor temperature conditions, if the compressor's exhaust temperature is detected to be less than or equal to a first exhaust temperature threshold, the compressor is controlled to operate at a first preset frequency. At this frequency, the compressor's sliding vanes can operate more stably, minimizing sliding vane noise.

[0069] Corresponding to the above embodiments, this application also proposes a compressor control device.

[0070] Reference Figure 3 The compressor control device 300 includes: a first determining module 310 and a second determining module 320.

[0071] The first determining module 310 is used to determine whether the air conditioner meets the preset frequency adjustment conditions when the air conditioner is operating in cooling mode. The second determining module 320 is used to determine the operating frequency of the compressor based on the compressor's exhaust temperature.

[0072] According to one embodiment of the present invention, the first determining module 310 is specifically used to determine that the air conditioner meets the frequency adjustment conditions when the air conditioner operates in cooling mode for a duration of a first preset time or the compressor operating frequency reaches a first preset frequency. The first preset frequency is determined based on the compressor operating frequency when the sliding vane makes an abnormal noise.

[0073] According to one embodiment of the present invention, the second determining module 320 is specifically used to control the compressor to operate at a first preset frequency and continue for a second preset time when the compressor's exhaust temperature is less than or equal to a first exhaust temperature threshold; wherein the first exhaust temperature threshold is determined based on the compressor's exhaust temperature when the vane produces abnormal noise.

[0074] According to one embodiment of the present invention, the second determining module 320 is further configured to control the compressor to operate at a second preset frequency when the exhaust temperature of the compressor is greater than a second exhaust temperature threshold; wherein the second exhaust temperature threshold is greater than a first exhaust temperature threshold, and the second preset frequency is less than a first preset frequency.

[0075] According to one embodiment of the present invention, the second determining module 320 is further configured to maintain the operating frequency of the compressor unchanged when the exhaust temperature of the compressor is greater than the first exhaust temperature threshold and less than or equal to the second exhaust temperature threshold.

[0076] According to one embodiment of the present invention, the opening degree of the electronic expansion valve of the outdoor unit is adjusted, and / or the speed of the outdoor fan is adjusted.

[0077] According to one embodiment of the present invention, the opening degree of the electronic expansion valve is reduced and the upper limit of the opening degree of the electronic expansion valve is limited.

[0078] According to one embodiment of the present invention, the outdoor fan is controlled to operate at a preset minimum speed.

[0079] It should be noted that the above explanation of the embodiments and beneficial effects of the compressor control method also applies to the compressor control device of the present invention. To avoid redundancy, it will not be elaborated in detail here.

[0080] The control device of this invention lowers the low-frequency operating limit when the compressor's exhaust temperature is sufficient, allowing the compressor to further reduce its operating frequency; conversely, it raises the low-frequency operating limit when the compressor's exhaust temperature is insufficient, thus increasing the compressor's operating frequency. This, to a certain extent, ensures stable operation of the sliding vanes and minimizes the generation of abnormal vane noise.

[0081] Corresponding to the above embodiments, this application also proposes a computer-readable storage medium.

[0082] The computer-readable storage medium of this application stores a compressor control program thereon, which, when executed by a processor, implements the aforementioned compressor control method.

[0083] It should be noted that the above explanation of the embodiments and beneficial effects of the compressor control method is also applicable to the computer-readable storage medium of the embodiments of the present invention. To avoid redundancy, it will not be elaborated in detail here.

[0084] Corresponding to the above embodiments, this application also proposes a controller.

[0085] See Figure 4 As shown, the controller 400 of this application includes a memory 410, a processor 420, and a compressor control program stored in the memory 410 and executable on the processor 420. When the processor 420 executes the compressor control program, it implements the aforementioned compressor control method.

[0086] It should be noted that the above explanation of the embodiments and beneficial effects of the compressor control method also applies to the controller of the embodiments of the present invention. To avoid redundancy, it will not be elaborated in detail here.

[0087] Corresponding to the above embodiments, this application also proposes a compressor.

[0088] See Figure 5As shown, the compressor 500 of this application includes a memory 510, a processor 520, and a compressor control program stored in the memory 510 and executable on the processor 520. When the processor 520 executes the compressor control program, it implements the aforementioned compressor control method.

[0089] It should be noted that the above explanation of the embodiments and beneficial effects of the compressor control method also applies to the compressors in the embodiments of the present invention. To avoid redundancy, they will not be elaborated in detail here.

[0090] Corresponding to the above embodiments, this application also proposes an air conditioner.

[0091] The air conditioner of this application includes the aforementioned controller 400, or the aforementioned compressor 500, or the aforementioned compressor control device 300.

[0092] It should be noted that the above explanation of the embodiments and beneficial effects of the compressor control method also applies to the controller of the embodiments of the present invention. To avoid redundancy, it will not be elaborated in detail here.

[0093] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0094] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0095] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0096] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0097] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0098] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A method for controlling a compressor, characterized in that, The method includes: When the air conditioner is operating in cooling mode, it is determined that the air conditioner meets the preset frequency adjustment conditions; The operating frequency of the compressor is determined based on the discharge temperature of the compressor; Determining that the air conditioner meets the frequency regulation conditions includes: When the air conditioner operates in cooling mode for a duration of a first preset time, or when the compressor operates at a frequency of a first preset frequency, it is determined that the air conditioner meets the frequency adjustment conditions. The first preset frequency is determined based on the operating frequency of the compressor when the sliding vane makes an abnormal noise. Determining the operating frequency of the compressor based on its discharge temperature includes: When the exhaust temperature of the compressor is less than or equal to a first exhaust temperature threshold, the compressor is controlled to operate at a first preset frequency for a second preset time; wherein, the first exhaust temperature threshold is determined based on the exhaust temperature of the compressor when the vane makes an abnormal noise; Determining the operating frequency of the compressor based on the compressor's discharge temperature also includes: When the exhaust temperature of the compressor is greater than the second exhaust temperature threshold, the compressor is controlled to operate at a second preset frequency; wherein the second exhaust temperature threshold is greater than the first exhaust temperature threshold, and the second preset frequency is less than the first preset frequency. Determining the operating frequency of the compressor based on the compressor's discharge temperature also includes: When the exhaust temperature of the compressor is greater than the first exhaust temperature threshold and less than or equal to the second exhaust temperature threshold, the operating frequency of the compressor is kept constant.

2. The control method according to claim 1, characterized in that, The method further includes: Adjust the opening of the electronic expansion valve of the outdoor unit, and / or adjust the speed of the outdoor fan.

3. The control method according to claim 2, characterized in that, Adjusting the opening of the electronic expansion valve of the outdoor unit includes: The opening degree of the electronic expansion valve is reduced, and the upper limit of the opening degree of the electronic expansion valve is limited.

4. The control method according to claim 2, characterized in that, Adjusting the speed of the outdoor fan, including: Control the outdoor fan to operate at a preset minimum speed.

5. A control device for a compressor, characterized in that, include: The first determining module is used to determine that the air conditioner meets the preset frequency adjustment conditions when the air conditioner is operating in cooling mode. The second determining module is used to determine the operating frequency of the compressor based on the exhaust temperature of the compressor; Determining that the air conditioner meets the frequency regulation conditions includes: When the air conditioner operates in cooling mode for a duration of a first preset time, or when the compressor operates at a frequency of a first preset frequency, it is determined that the air conditioner meets the frequency adjustment conditions. The first preset frequency is determined based on the operating frequency of the compressor when the sliding vane makes an abnormal noise. Determining the operating frequency of the compressor based on its discharge temperature includes: When the exhaust temperature of the compressor is less than or equal to a first exhaust temperature threshold, the compressor is controlled to operate at a first preset frequency for a second preset time; wherein, the first exhaust temperature threshold is determined based on the exhaust temperature of the compressor when the vane makes an abnormal noise; Determining the operating frequency of the compressor based on the compressor's discharge temperature also includes: When the exhaust temperature of the compressor is greater than the second exhaust temperature threshold, the compressor is controlled to operate at a second preset frequency; wherein the second exhaust temperature threshold is greater than the first exhaust temperature threshold, and the second preset frequency is less than the first preset frequency. Determining the operating frequency of the compressor based on the compressor's discharge temperature also includes: When the exhaust temperature of the compressor is greater than the first exhaust temperature threshold and less than or equal to the second exhaust temperature threshold, the operating frequency of the compressor is kept constant.

6. A computer-readable storage medium, characterized in that, It stores a compressor control program, which, when executed by a processor, implements the compressor control method according to any one of claims 1-4.

7. A controller, characterized in that, The system includes a memory, a processor, and a compressor control program stored in the memory and executable on the processor. When the processor executes the compressor control program, it implements the compressor control method according to any one of claims 1-4.

8. A compressor, characterized in that, The system includes a memory, a processor, and a compressor control program stored in the memory and executable on the processor. When the processor executes the compressor control program, it implements the compressor control method according to any one of claims 1-4.

9. An air conditioner, characterized in that, This includes the controller as described in claim 7, or the compressor as described in claim 8, or the control device for the compressor as described in claim 5.

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