Frequency control method and device of compressor and air conditioner

Abstract

The application discloses a frequency control method and device of a compressor and an air conditioner, and relates to the technical field of air conditioners, the frequency control method of the compressor comprising the following steps: monitoring the vibration stress of the compressor after the compressor is started to operate; decomposing the vibration stress into three force decomposition amounts in a three-dimensional coordinate, and judging whether the vibration stress is over standard based on the three force decomposition amounts; if yes, setting the current operating frequency of the compressor when the vibration stress is detected as the frequency shielding point of the compressor. The application realizes self-adaptive detection and setting of the frequency shielding point of the compressor during the operation of the compressor, can avoid the generation of noise from the source, does not need human intervention in maintenance, reduces the maintenance and after-sales cost of the air conditioner, and improves the user experience.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and more specifically, to a compressor frequency control method, device, and air conditioner. Background Technology

[0002] With the increasing demands for comfort from end users, the trend towards inverter technology in household air conditioners has become a major development direction. Inverter air conditioners refer to the ability to change the operating frequency of the compressor, thereby achieving flexible changes in indoor temperature and reducing the surge in electricity consumption caused by frequent compressor shutdowns at reaching the set temperature. The compressor operating frequency of an inverter air conditioner corresponds to the mechanical cycle of the piston's movement inside the compressor. Influenced by the inherent frequency of the cylinder and the surrounding installation environment, under certain installation conditions, the compressor is prone to generating various noises due to resonance during operation, seriously affecting user comfort.

[0003] Existing inverter air conditioner frequency control technology typically addresses this by masking specific frequencies when the air conditioner fails noise testing before leaving the factory, based on overall performance testing. If user complaints arise due to noise affecting comfort, online upgrades are then performed to mask those frequencies. However, because each air conditioner's installation environment differs, the frequency masking points for the compressor of the same model may also vary. Furthermore, the frequency masking points for noise sources in the same air conditioner can change over time. This makes it impossible to prevent noise generation at its source, easily leading to user complaints and a reduced user experience. Summary of the Invention

[0004] To address the aforementioned issues, this invention provides a compressor frequency control method, device, and air conditioner. This method enables adaptive detection and setting of the compressor's frequency shielding point during operation, thereby preventing noise generation at the source. Furthermore, it eliminates the need for human intervention in maintenance, reducing the maintenance and after-sales costs of the air conditioner and enhancing the user experience.

[0005] According to an embodiment of the present invention, a frequency control method for a compressor is provided, comprising: monitoring the vibration stress of the compressor after the compressor starts running; decomposing the vibration stress into three force decomposition quantities in three-dimensional coordinates, and determining whether the vibration stress exceeds the standard based on the three force decomposition quantities; if so, setting the current operating frequency of the compressor when the vibration stress is detected as the frequency shielding point of the compressor.

[0006] By adopting the above technical solution, the vibration stress of the compressor is detected in real time after the compressor starts, and the vibration stress is judged to be excessive based on the three force decomposition quantities of the vibration stress. The vibration of the compressor can be accurately detected. By setting the compressor frequency corresponding to the excessive vibration stress as the frequency shielding point, the frequency shielding point of the compressor is adaptively detected and set during the operation of the compressor. This can prevent the generation of noise from the source, and no human intervention is required for maintenance, which reduces the maintenance and after-sales cost of the air conditioner and improves the user experience.

[0007] Preferably, the step of decomposing the vibration stress into three force decomposition quantities in three-dimensional coordinates includes: decomposing the vibration stress into F X =Fcosβ,F Y =Fcosα and F Z =Fcosγ; where F X Let F be the first force decomposition of the vibration stress in the X-axis direction of the three-dimensional coordinate system, β be the vibration stress, and β be the angle between the vibration stress and the X-axis direction. Y The second force decomposition of the vibration stress in the Y-axis direction under the three-dimensional coordinate system is given by F, where α is the angle between the vibration stress and the Y-axis direction. Z γ is the third force decomposition of the vibration stress in the Z-axis direction under the three-dimensional coordinate system, and γ is the angle between the vibration stress and the Z-axis direction.

[0008] By adopting the above technical solution, the vibration stress of the compressor is decomposed into force decomposition in three coordinate axes, which can reflect the force on the compressor in different directions. This allows for the selection of the compressor's frequency shielding point under different conditions, thus improving the accuracy of selecting the compressor's frequency shielding point.

[0009] Preferably, the step of determining whether the vibration stress exceeds the standard based on the three force decomposition quantities includes: determining whether any one of the three force decomposition quantities exceeds the corresponding force threshold; if so, determining that the vibration stress exceeds the standard.

[0010] By adopting the above technical solution, when any one of the three force decomposition quantities exceeds the corresponding force threshold, it is determined that the vibration stress exceeds the standard. This allows the compressor to shield all frequency shielding points in the three axial directions, effectively reducing compressor noise and improving the user experience.

[0011] Preferably, the step of determining whether the vibration stress exceeds the standard based on the three force decomposition quantities includes: When the first force decomposition amount is greater than or equal to the first X-axis force threshold, it is determined that the vibration stress exceeds the standard; When the second force decomposition amount is greater than or equal to the first Y-axis force threshold, it is determined that the vibration stress exceeds the standard; When the third force decomposition quantity is greater than or equal to the first Z-axis force threshold, it is determined that the vibration stress exceeds the standard.

[0012] By adopting the above technical solution and setting corresponding force thresholds for the three axial directions, it is possible to accurately determine whether the vibration stress in the three axial directions exceeds the standard, thereby realizing the automatic screening of compressor frequency shielding points. This method is highly efficient and versatile.

[0013] Preferably, the step of determining whether the vibration stress exceeds the standard based on the three force decomposition quantities includes: When the first force decomposition amount is greater than or equal to the second X-axis force threshold and less than the first X-axis force threshold, the third force decomposition amount is greater than or equal to the second Z-axis force threshold and less than the first Z-axis force threshold, and the second force decomposition amount is less than the second Y-axis force threshold, the vibration stress is determined to be excessive; wherein, the second Y-axis force threshold is less than the first Y-axis force threshold.

[0014] By adopting the above technical solution, when the force decomposition amount in all three axes is less than the corresponding force threshold, the vibration stress of the compressor is still judged based on the comprehensive force decomposition amount in the three axes. It can be determined whether the comprehensive force on the compressor in two of the directions exceeds the standard, thus improving the accuracy of compressor vibration judgment.

[0015] Preferably, the step of determining whether the vibration stress exceeds the standard based on the three force decomposition quantities includes: When the first force decomposition amount is greater than or equal to the third X-axis force threshold and less than the second X-axis force threshold, or the second force decomposition amount is greater than or equal to the third Y-axis force threshold and less than the second Y-axis force threshold, and the third force decomposition amount is greater than the second Z-axis force threshold and less than the third Z-axis force threshold, the vibration stress is determined to be excessive; wherein the third Z-axis force threshold is greater than the second Z-axis force threshold and less than the first Z-axis force threshold.

[0016] Preferably, the frequency control method further includes: The frequency shielding point is added to the frequency shielding point parameter table of the compressor so that the compressor avoids the frequency shielding points in the frequency shielding point parameter table during operation.

[0017] By adopting the above technical solution, storing the compressor's frequency shielding point parameter table in the air conditioner can allow the compressor to avoid all frequency shielding points, thus preventing excessive noise and improving the user experience.

[0018] According to an embodiment of the present invention, another aspect provides a frequency control device for a compressor, comprising: a monitoring module for monitoring the vibration stress of the compressor after the compressor starts running; a judgment module for decomposing the vibration stress into three force decomposition quantities in three-dimensional coordinates and judging whether the vibration stress exceeds the standard based on the three force decomposition quantities; and a setting module for setting the current operating frequency of the compressor when the vibration stress is detected as the frequency shielding point of the compressor when it is determined that the vibration stress exceeds the standard.

[0019] According to an embodiment of the present invention, another aspect provides an air conditioner, including: a compressor, a pressure sensor and a controller, wherein the pressure sensor is disposed inside the compressor and is used to monitor the vibration stress of the compressor; The controller includes a computer-readable storage medium storing a computer program, which is read and executed by the processor to implement the method as described in any of the first aspects.

[0020] According to an embodiment of the present invention, another aspect provides a computer-readable storage medium storing a computer program that, when read and executed by a processor, implements the method as described in any of the first aspects.

[0021] The present invention has the following beneficial effects: by detecting the vibration stress of the compressor in real time after the compressor starts, and judging whether the vibration stress exceeds the standard based on the three force decomposition quantities of the vibration stress, the vibration of the compressor can be accurately detected. By setting the compressor frequency corresponding to the excessive vibration stress as the frequency shielding point, the frequency shielding point of the compressor can be adaptively detected and set during the operation of the compressor, which can avoid the generation of noise from the source, and no human intervention is required for maintenance, thereby reducing the maintenance and after-sales cost of the air conditioner and improving the user experience. Attached Figure Description

[0022] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0023] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0024] Figure 1 A flowchart of a compressor frequency control method provided by the present invention; Figure 2 A schematic diagram of signal transmission provided by the present invention; Figure 3 This is a schematic diagram of a frequency control device for a compressor provided by the present invention. Detailed Implementation

[0025] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] This embodiment provides a frequency control method for a compressor, which can be applied to air conditioners, see below. Figure 1 The flowchart of the compressor frequency control method shown here mainly includes the following steps S102 to S106: Step S102: After the compressor starts running, monitor the vibration stress of the compressor; The air conditioner mentioned above is an inverter air conditioner. A pressure sensor is installed inside the compressor cavity. When the compressor starts running, in order to detect the frequency shielding point of the compressor, the vibration stress of the compressor is detected in real time or periodically based on the pressure sensor.

[0028] In one embodiment, the controller of the air conditioner includes a detection module and a central processing unit (CPU), see below. Figure 2The signal transmission diagram shown illustrates that the pressure sensor in the compressor transmits the detected pressure signal to the pressure detection module. The pressure detection module converts the pressure signal from an analog signal to a digital signal and transmits the digital pressure signal to the CPU of the controller, so that the controller can filter out the frequency shielding point of the compressor based on the pressure signal.

[0029] Step S104: Decompose the vibration stress into three force decomposition quantities in three-dimensional coordinates, and determine whether the vibration stress exceeds the standard based on the three force decomposition quantities; The controller decomposes the vibration stress detected by the pressure sensor into three-dimensional force decomposition quantities. A three-dimensional coordinate system is established with the pressure sensor position as the origin, the vertically upward direction as the Y-axis, the horizontal direction perpendicular to the Y-axis as the X-axis, and the outward direction perpendicular to the Y-axis as the Z-axis. The vibration stress is decomposed into three force decomposition quantities on these three axes. The controller then determines whether each of the three force decomposition quantities exceeds the limit. If any force decomposition quantity exceeds the limit, it indicates that the compressor's vibration stress is excessive and will generate significant noise.

[0030] Step S106: If so, set the compressor's current operating frequency when vibration stress is detected to the compressor's frequency shielding point.

[0031] When it is determined that the detected vibration stress exceeds the standard, the current operating frequency of the compressor at the time of detection of vibration stress is used as a frequency shielding point of the compressor, so that the compressor runs away from the frequency shielding point, thereby avoiding the generation of large noise.

[0032] The compressor frequency control method provided in this embodiment can accurately detect the compressor's vibration stress by detecting the compressor's vibration stress in real time after the compressor starts and judging whether the vibration stress exceeds the standard based on the three force decomposition quantities of the vibration stress. By setting the compressor frequency corresponding to the excessive vibration stress as the frequency shielding point, the method can achieve adaptive detection and setting of the compressor's frequency shielding point during compressor operation, which can avoid noise generation from the source and eliminate the need for human intervention in maintenance, thereby reducing the maintenance and after-sales costs of the air conditioner and improving the user experience.

[0033] In one embodiment, this embodiment provides a specific implementation method for decomposing vibration stress into three force decomposition quantities in three-dimensional coordinates: Decompose the vibration stress into F X =Fcosβ,F Y =Fcosα and F Z =Fcosγ; Among them, F X Let F be the first force decomposition of the vibration stress in the X-axis direction in three-dimensional coordinates, and β be the angle between the vibration stress and the X-axis direction. YF is the second force decomposition of vibration stress in the Y-axis direction in three-dimensional coordinates, where α is the angle between the vibration stress and the Y-axis direction. Z α is the third force decomposition of vibration stress in the Z-axis direction in three-dimensional coordinates, and γ is the angle between vibration stress and the Z-axis direction. The range of the above angle is: 0<α<90°, 0<β<90°, 0<γ<90°.

[0034] By decomposing the vibration stress of the compressor into force decomposition quantities in three coordinate axes, the forces acting on the compressor in different directions can be reflected, thereby enabling the selection of frequency shielding points of the compressor under different conditions and improving the accuracy of selecting compressor frequency shielding points.

[0035] In one embodiment, this embodiment provides a specific implementation method for determining whether vibration stress exceeds the standard based on three force decomposition quantities: determine whether any one of the three force decomposition quantities exceeds the corresponding force threshold, and if so, determine that the vibration stress exceeds the standard.

[0036] When any one of the three stress decomposition quantities exceeds the corresponding stress threshold, it indicates that the compressor's vibration stress in that axial direction is excessive and will generate significant noise. The stress thresholds corresponding to the three stress decomposition quantities can be the critical values ​​for the preset decibel noise generated in that direction. By determining that the vibration stress exceeds the limit when any one of the three stress decomposition quantities exceeds the corresponding stress threshold, the compressor can shield all frequency shielding points in the three axial directions, effectively reducing compressor noise and improving the user experience.

[0037] In one embodiment, this embodiment provides an implementation method for determining whether vibration stress exceeds the standard based on three force decomposition quantities, which can be performed by referring to the following steps: Step (1): When the first force decomposition quantity F X Greater than or equal to the first X-axis force threshold f x At that time, it was determined that the vibration stress exceeded the standard; The aforementioned first X-axis force threshold f x It can be the critical force value that will generate a preset decibel of noise in the X-axis direction, when F X ≥f x When the vibration stress in the X-axis direction exceeds the standard, it will generate a lot of noise. Obtain the current compressor operating frequency f1 and set f1 as the frequency shielding point.

[0038] Step (2): When the second force decomposition quantity F Y When the stress is greater than or equal to the first Y-axis stress threshold, the vibration stress is determined to be excessive. The aforementioned first Y-axis force threshold f y It can be the critical force value that will generate a preset decibel of noise in the Y-axis direction, when FY ≥f y When the vibration stress in the Y-axis direction exceeds the standard, it will generate a lot of noise. Obtain the current compressor operating frequency f2 and set f2 as the frequency shielding point.

[0039] Step (3): When the third force decomposition quantity is greater than or equal to the first Z-axis force threshold, it is determined that the vibration stress exceeds the standard.

[0040] The aforementioned first Z-axis force threshold f z It can be the critical force value that will generate a preset decibel of noise in the Z-axis direction, when F Z ≥f z When the vibration stress in the Z-axis direction exceeds the standard, it will generate a lot of noise. Obtain the current compressor operating frequency f3 and set f3 as the frequency shielding point.

[0041] By setting corresponding force thresholds for the three axial directions, it is possible to accurately determine whether the vibration stress in the three axial directions exceeds the standard, thus realizing the automatic screening of compressor frequency shielding points. This method is highly efficient and versatile.

[0042] Step (4): When the first force decomposition amount is greater than or equal to the second X-axis force threshold and less than the first X-axis force threshold, the third force decomposition amount is greater than or equal to the second Z-axis force threshold and less than the first Z-axis force threshold, and the second force decomposition amount is less than the second Y-axis force threshold, it is determined that the vibration stress exceeds the standard. The aforementioned second X-axis force threshold is less than the first X-axis force threshold f. x The force threshold of the second Y-axis is less than the force threshold of the first Y-axis f. y The force threshold of the second Z-axis is less than the force threshold of the first Z-axis f. z .

[0043] The aforementioned second X-axis force threshold can be 2 / 3*f x The second Y-axis force threshold can be 1 / 2*f y The second Z-axis force threshold can be 2 / 3*f z .

[0044] When f x >F X ≥2 / 3f x And f z >F z ≥2 / 3f z And F Y <1 / 2f yWhen the frequency is specified, it indicates that the compressor is experiencing significant longitudinal and lateral vibrations. The current compressor operating frequency f4 is detected and set as the frequency shielding point. By considering the force decomposition values ​​in all three axes as less than the corresponding force thresholds, the compressor's vibration stress is comprehensively assessed based on the force decomposition values ​​in the three axes to determine whether it still exceeds the standard. This improves the accuracy of compressor vibration assessment by determining whether the overall force on the compressor in two of the directions exceeds the standard.

[0045] Step (5): When the first force decomposition amount is greater than or equal to the third X-axis force threshold and less than the second X-axis force threshold, or the second force decomposition amount is greater than or equal to the third Y-axis force threshold and less than the second Y-axis force threshold, and the third force decomposition amount is greater than the second Z-axis force threshold and less than the third Z-axis force threshold, it is determined that the vibration stress exceeds the standard. The third Z-axis force threshold is greater than the second Z-axis force threshold but less than the first Z-axis force threshold. The aforementioned third X-axis force threshold can be 1 / 2*f. x The force threshold on the third Y-axis can be 4 / 5*f y The force threshold of the third Z-axis can be 1 / 2*f z .

[0046] When 2 / 3f x >F X ≥1 / 2f x Or 2 / 3f z >F z ≥1 / 2f z That is, one of these two conditions must be met, and 1 / 2f y <F Y <4 / 5f y When the vibration is low, it indicates that the compressor has relatively small horizontal vibration but large Y-axis vibration, which is an abnormal situation. This is usually more common when the compressor is running at low frequency. Detect the current compressor operating frequency f5 and set f5 as the frequency shielding point.

[0047] In one embodiment, the method provided in this embodiment further includes: adding frequency shielding points to the frequency shielding point parameter table of the compressor, so that the compressor avoids each frequency shielding point in the frequency shielding point parameter table during operation.

[0048] The aforementioned frequency shielding point parameter table is the compressor's EE parameter table. This table stores all the compressor's frequency shielding points. Each frequency shielding point corresponding to excessive vibration stress is added to the frequency shielding point parameter table to update it. By storing the compressor's frequency shielding point parameter table in the air conditioner, the compressor can avoid all frequency shielding points, preventing excessive noise and improving the user experience.

[0049] The frequency control method provided in this embodiment uses a pressure sensor mounted on the compressor cavity to detect the magnitude of vibration stress in three dimensions during compressor operation, thereby selecting the appropriate frequency point for shielding under different conditions. By processing information on the compressor vibration state during operation, the program intelligently identifies the compressor frequency to be shielded, enabling the air conditioning unit to adaptively handle the situation, avoiding post-maintenance and reducing unnecessary cost investment. The software algorithm is used for accurate identification, and the modular software design facilitates portability and reuse for different units, making it more versatile than hardware solutions. Corresponding to the compressor frequency control method provided in the above embodiments, this embodiment of the invention provides an example of applying the above compressor frequency control method, which can be specifically performed according to the following steps: Step 1: When the pressure sensor in the compressor detects vibration, it automatically converts and decomposes the vibration stress into a three-dimensional force decomposition quantity F. X =Fcosβ,F Y =Fcosα and F Z =Fcosγ; F X Let F be the first force decomposition of the vibration stress in the X-axis direction in three-dimensional coordinates, and β be the angle between the vibration stress and the X-axis direction. Y F is the second force decomposition of vibration stress in the Y-axis direction in three-dimensional coordinates, where α is the angle between the vibration stress and the Y-axis direction. Z α is the third force decomposition of vibration stress in the Z-axis direction in three-dimensional coordinates, and γ is the angle between vibration stress and the Z-axis direction, 0<α<90°, 0<β<90°, 0<γ<90°.

[0050] Step 2: Determine the frequency shielding point of the compressor based on the force decomposition amount; When F X ≥f x When the vibration stress in the X-axis direction exceeds the standard, it will generate a lot of noise. Obtain the current compressor operating frequency f1, set f1 as the frequency shielding point, and update the EE parameter table.

[0051] When F Y ≥f y When the vibration stress in the Y-axis direction exceeds the standard, it will generate a lot of noise. Obtain the current compressor operating frequency f2, set f2 as the frequency shielding point, and update the EE parameter table.

[0052] When F Z ≥f z When the vibration stress in the Z-axis direction exceeds the standard, it will generate a lot of noise. Obtain the current compressor operating frequency f3, set f3 as the frequency shielding point, and update the EE parameter table.

[0053] When f x>F X ≥2 / 3f x And f z >F z ≥2 / 3f z And F Y <1 / 2f y When the compressor operates at this frequency, it indicates that both longitudinal and lateral vibrations are significant. The current compressor operating frequency f4 is detected, f4 is set as the frequency shielding point, and the EE parameter table is updated.

[0054] When 2 / 3f x >F X ≥1 / 2f x Or 2 / 3f z >F z ≥1 / 2f z And 1 / 2f y <F Y <4 / 5f y When the vibration is low, it indicates that the compressor has relatively small horizontal vibration but large Y-axis vibration, which is an abnormal situation. This is usually more common when the compressor is running at low frequency. Detect the current compressor operating frequency f5, set f5 as the frequency shielding point, and update the EE parameter table.

[0055] Since the actual installation location and environment of the air conditioning unit are different, vibration stress conversion can be used to represent excessive noise. The above EE parameter table can be designed with a readable and writable memory chip based on hardware circuit design.

[0056] The method provided in this embodiment solves the problems of high cost and low efficiency in point-to-point "patchwork" solutions to compressor noise issues. At the same time, it can adjust in a timely manner according to changes in the air conditioner's status, always maintaining the most comfortable operating frequency for end consumers, reducing design and after-sales maintenance costs, and improving consumer comfort.

[0057] Corresponding to the compressor frequency control method provided in the above embodiments, this invention provides a compressor frequency control device, which can be applied to air conditioners, see below. Figure 3 The diagram shows the structure of the compressor's frequency control device, which includes the following modules: Monitoring module 31 is used to monitor the vibration stress of the compressor after the compressor starts running; The judgment module 32 is used to decompose the vibration stress into three force decomposition quantities in three-dimensional coordinates, and to judge whether the vibration stress exceeds the standard based on the three force decomposition quantities. Setting module 33 is used to set the current operating frequency of the compressor when vibration stress is detected as the frequency shielding point of the compressor when it is determined that the vibration stress exceeds the standard.

[0058] The frequency control device for the compressor provided in this embodiment can accurately detect the vibration of the compressor by detecting the vibration stress of the compressor in real time after the compressor starts and judging whether the vibration stress exceeds the standard based on the three force decomposition quantities of the vibration stress. By setting the compressor frequency corresponding to the excessive vibration stress as the frequency shielding point, the device can adaptively detect and set the frequency shielding point of the compressor during operation, which can avoid the generation of noise from the source and eliminate the need for human intervention in maintenance, thereby reducing the maintenance and after-sales costs of the air conditioner and improving the user experience.

[0059] In one embodiment, the aforementioned determination module 32 is used to decompose the vibration stress into F. X =Fcosβ,F Y =Fcosα and F Z =Fcosγ; where F X Let F be the first force decomposition of the vibration stress in the X-axis direction in three-dimensional coordinates, and β be the angle between the vibration stress and the X-axis direction. Y F is the second force decomposition of vibration stress in the Y-axis direction in three-dimensional coordinates, where α is the angle between the vibration stress and the Y-axis direction. Z γ is the third force decomposition of vibration stress in the Z-axis direction in three-dimensional coordinates, and γ is the angle between vibration stress and the Z-axis direction.

[0060] In one embodiment, the judgment module 32 is used to determine whether any one of the three force decomposition quantities exceeds the corresponding force threshold. If so, it is determined that the vibration stress exceeds the standard.

[0061] In one embodiment, the judgment module 32 is used to determine that the vibration stress exceeds the standard when the first force decomposition amount is greater than or equal to the first X-axis force threshold; when the second force decomposition amount is greater than or equal to the first Y-axis force threshold; and when the third force decomposition amount is greater than or equal to the first Z-axis force threshold.

[0062] In one embodiment, the determination module 32 is used to determine that the vibration stress exceeds the standard when the first force decomposition amount is greater than or equal to the second X-axis force threshold and less than the first X-axis force threshold, the third force decomposition amount is greater than or equal to the second Z-axis force threshold and less than the first Z-axis force threshold, and the second force decomposition amount is less than the second Y-axis force threshold; wherein the second Y-axis force threshold is less than the first Y-axis force threshold.

[0063] In one embodiment, the aforementioned determination module 32 is used to determine that the vibration stress exceeds the standard when the first force decomposition amount is greater than or equal to the third X-axis force threshold and less than the second X-axis force threshold, or the second force decomposition amount is greater than or equal to the third Y-axis force threshold and less than the second Y-axis force threshold, and the third force decomposition amount is greater than the second Z-axis force threshold and less than the third Z-axis force threshold; wherein the third Z-axis force threshold is greater than the second Z-axis force threshold and less than the first Z-axis force threshold.

[0064] In one embodiment, the above-mentioned apparatus further includes: The update module is used to add frequency shielding points to the compressor's frequency shielding point parameter table so that the compressor can avoid the frequency shielding points in the frequency shielding point parameter table during operation.

[0065] Corresponding to the compressor frequency control method provided in the above embodiments, this embodiment provides an air conditioner, which includes: a compressor, a pressure sensor and a controller. The pressure sensor is disposed in the compressor cavity and is used to monitor the vibration stress of the compressor. The air conditioner is an inverter air conditioner.

[0066] The controller stores a computer-readable storage medium containing a computer program and a processor. The computer program is read and executed by the processor to implement the compressor frequency control method provided in the above embodiments.

[0067] This embodiment also provides a computer-readable storage medium storing a computer program. When executed by a processor, this computer program implements the various processes of the above-described compressor frequency control method embodiment and achieves the same technical effect. To avoid repetition, it will not be described again here. The computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, etc.

[0068] Of course, those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by computer-controlled devices. The program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the above method embodiments. The storage medium can be a memory, a disk, an optical disk, etc.

[0069] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

[0070] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the compressor frequency control device and air conditioner disclosed in the embodiments, since they correspond to the compressor frequency control method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section. The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0071] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A frequency control method for a compressor, characterized in that, include: After the compressor starts running, monitor the vibration stress of the compressor; The vibration stress is decomposed into three force decomposition quantities in three-dimensional coordinates, and the vibration stress is judged to be excessive based on the three force decomposition quantities. If so, set the current operating frequency of the compressor when the vibration stress is detected as the frequency shielding point of the compressor; The step of decomposing the vibration stress into three force decomposition quantities in three-dimensional coordinates includes: decomposing the vibration stress into F X =Fcosβ,F Y =Fcosα and F Z =Fcosγ; where F X Let F be the first force decomposition of the vibration stress in the X-axis direction of the three-dimensional coordinate system, β be the vibration stress, and β be the angle between the vibration stress and the X-axis direction. Y The second force decomposition of the vibration stress in the Y-axis direction under the three-dimensional coordinate system is given by F, where α is the angle between the vibration stress and the Y-axis direction. Z The third force decomposition of the vibration stress in the Z-axis direction under the three-dimensional coordinate system is given by γ, where γ is the angle between the vibration stress and the Z-axis direction. The step of determining whether the vibration stress exceeds the standard based on the three force decomposition quantities includes: Determine whether any one of the three force decomposition quantities exceeds the corresponding force threshold; if so, determine that the vibration stress exceeds the standard. When the first force decomposition amount is greater than or equal to the first X-axis force threshold, it is determined that the vibration stress exceeds the standard; When the second force decomposition amount is greater than or equal to the first Y-axis force threshold, it is determined that the vibration stress exceeds the standard; When the third force decomposition amount is greater than or equal to the first Z-axis force threshold, it is determined that the vibration stress exceeds the standard; When the first force decomposition amount is greater than or equal to the second X-axis force threshold and less than the first X-axis force threshold, the third force decomposition amount is greater than or equal to the second Z-axis force threshold and less than the first Z-axis force threshold, and the second force decomposition amount is less than the second Y-axis force threshold, the vibration stress is determined to be excessive; wherein, the second Y-axis force threshold is less than the first Y-axis force threshold.

2. The frequency control method as described in claim 1, characterized in that, The step of determining whether the vibration stress exceeds the standard based on the three force decomposition quantities includes: When the first force decomposition amount is greater than or equal to the third X-axis force threshold and less than the second X-axis force threshold, or the second force decomposition amount is greater than or equal to the third Y-axis force threshold and less than the second Y-axis force threshold, and the third force decomposition amount is greater than the second Z-axis force threshold and less than the third Z-axis force threshold, the vibration stress is determined to be excessive; wherein the third Z-axis force threshold is greater than the second Z-axis force threshold and less than the first Z-axis force threshold.

3. The frequency control method according to any one of claims 1-2, characterized in that, Also includes: The frequency shielding point is added to the frequency shielding point parameter table of the compressor so that the compressor avoids the frequency shielding points in the frequency shielding point parameter table during operation.

4. A frequency control device for a compressor, characterized in that, The frequency control method according to any one of claims 1-3, wherein the frequency control device comprises: The monitoring module is used to monitor the vibration stress of the compressor after it starts running. The judgment module is used to decompose the vibration stress into three force decomposition quantities in three-dimensional coordinates, and to determine whether the vibration stress exceeds the standard based on the three force decomposition quantities. The setting module is used to set the current operating frequency of the compressor when the vibration stress is detected as the frequency shielding point of the compressor when it is determined that the vibration stress exceeds the standard.

5. An air conditioner, characterized in that, include: The compressor, pressure sensor, and controller are provided, wherein the pressure sensor is disposed inside the compressor and is used to monitor the vibration stress of the compressor. The controller includes a computer-readable storage medium storing a computer program and a processor, the computer program being read and executed by the processor to implement the method as described in any one of claims 1-3.

6. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that is read and executed by a processor to implement the method as described in any one of claims 1-3.

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