Motor control method, air conditioner and computer storage medium

Abstract

The present invention discloses a motor control method, air conditioner, and computer storage medium, including: entering a noise self-test mode; obtaining a motor speed point corresponding to each motor gear position; selecting multiple motor speed points close to each gear position according to a preset speed selection rule for speed noise testing; and selecting a replacement speed value for each gear position that meets environmental noise requirements based on the speed noise test results. The present invention adds a noise self-test mode for user selection. When the fan motor of the indoor unit of the air conditioner produces noise, the user can select the noise self-test mode, automatically detecting and adjusting the motor gear position to avoid noise from the indoor unit, thereby improving user comfort.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to a motor control method, an air conditioner and a computer storage medium. Background Art

[0002] Most air conditioner indoor units adjust the air volume through gears, and the motor speed corresponding to the gears is also set at the factory and cannot be changed by users at will. However, as the service life of the air conditioner indoor unit increases, the indoor unit ages, becomes damaged, dust accumulates on the fan blades, and the evaporator becomes dirty and clogged, which causes noise problems in the factory default speed gear of the air conditioner motor. When this problem occurs, it can only be solved through maintenance. Summary of the Invention

[0003] In order to solve the technical problem in the prior art that the default speed of the fan motor causes noise and cannot be adjusted, the present invention provides a motor control method, an air conditioner and a computer storage medium.

[0004] The technical solution adopted in the present invention is:

[0005] The present invention provides a method for controlling a motor, comprising the steps of:

[0006] Enter the noise self-test mode;

[0007] Get the current motor speed point for each gear of the motor;

[0008] According to the preset speed selection rules, multiple motor speed points close to the current motor speed point of each gear are selected for speed noise testing, and the replacement speed value that meets the environmental noise requirements for each gear is selected based on the speed noise test results.

[0009] The above-mentioned preset gear speed selection rules specifically include:

[0010] The motor speed point of the gear is determined, a deviation range of the motor speed point of the gear is set, and a plurality of motor speed points are selected within the deviation range according to preset intervals.

[0011] The speed noise test specifically includes: adjusting the speed of the motor to the plurality of motor speed points one by one, and obtaining the noise coefficient of the motor when it runs at each of the motor speed points.

[0012] The above-mentioned replacement speed values ​​for each gear that meet the environmental noise requirements based on the speed noise test results specifically include:

[0013] The noise coefficients of multiple motor speed points selected by the preset speed selection rule for each gear are obtained, and the motor speed point corresponding to the environmental noise requirement in the noise coefficient is selected as the replacement speed value for the gear to meet the preset environmental noise requirement.

[0014] The above-mentioned method of screening the replacement speed value for each gear that meets the environmental noise requirements based on the speed noise test results also includes: when the noise coefficients of multiple motor speed points selected by the gear through the preset speed selection rules do not meet the environmental noise requirements, the gear continues to use the original motor speed point and prompts a fault.

[0015] The above-mentioned method of screening the replacement speed value for each gear that meets the environmental noise requirements based on the speed noise test results also includes: when there are multiple motor speed points corresponding to the environmental noise requirements in the selected noise coefficient, selecting the motor speed point with the smallest speed point as the replacement speed value for the gear that meets the preset environmental noise requirements.

[0016] Furthermore, obtaining the noise coefficient of the motor when it is running at each of the motor speed points is specifically as follows: obtaining the total noise value and the peak noise value of the motor when it is running at the motor speed point, subtracting the peak noise value from the total noise value to obtain the noise difference at the motor speed point, and comparing the noise difference with the preset standard value to obtain the noise coefficient at the motor speed point.

[0017] Specifically, when the noise coefficient at the motor speed point is greater than 1, it is determined that the environmental noise requirement is not met; when the noise coefficient at the motor speed point is less than or equal to 1, it is determined that the environmental noise requirement is met.

[0018] The present invention also provides an air conditioner, which uses the above-mentioned motor control method to adjust the motor speed to reduce noise.

[0019] The present invention also provides a computer storage medium for storing a computer program, wherein the computer program executes the above-mentioned motor control method when running.

[0020] Compared with the prior art, the present invention adds a noise self-detection mode for users to choose. When the fan motor of the air conditioner indoor unit makes noise, the user can select the noise self-detection mode, automatically detect and adjust the gear of the motor to avoid the motor noise of the indoor unit, thereby improving the comfort of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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 embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 is a flow chart in an embodiment of the present invention;

[0023] Figure 2 Flowchart of a specific embodiment of the present invention. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] The principle and structure of the present invention are described in detail below with reference to the accompanying drawings and embodiments.

[0026] Most air conditioner indoor units adjust air volume using gears. The motor speeds corresponding to these gears are factory-set and cannot be changed by the user. However, as air conditioner indoor units age, they can experience noise issues with the factory-set motor speeds due to factors such as aging, damage, dust accumulation on the fan blades, and clogging of the evaporator. This issue can only be resolved through repair. To address this issue, the present invention proposes a motor control method that adds a user-selectable noise self-check mode. When noise is detected in the indoor unit's fan motor, the user can select this mode to improve noise levels and enhance user comfort.

[0027] like Figure 1 、 2 As shown, the present invention proposes a motor control method, comprising the steps of:

[0028] The air conditioner enters the noise self-check mode; this mode can be entered through user selection control;

[0029] Get the current motor speed point for each motor gear and start collecting ambient noise. For example, a fan motor has three different speed gears: high, medium, and low. Each gear corresponds to a different air volume. The motor speed point for the high speed gear is 3000 rpm, the motor speed point for the medium speed gear is 2000 rpm, and the motor speed point for the low speed gear is 1000 rpm.

[0030] Then, according to the preset speed selection rules, multiple motor speed points close to the current speed point of each gear are selected for speed noise testing, and the replacement speed value that meets the environmental noise requirements for each gear is screened according to the speed noise test results; for example, the low-speed gear can be selected at 950 rpm and 1050 rpm for testing respectively. If the low-speed gear meets the environmental noise requirements at 950 rpm, 950 rpm can be recorded in the database for storage. The next time the user selects the low-speed gear in normal use mode, the motor runs at 950 rpm, so that the noise meets the requirements when the motor runs in this gear, thereby improving the user experience.

[0031] In a specific embodiment, the preset gear speed selection rules specifically include:

[0032] Determine the motor speed point of the gear, set a deviation range of the motor speed point including the gear, and select multiple motor speed points within the deviation range according to a preset interval; taking the low-speed gear of 1000 rpm as an example, the deviation range is 1000-n to 1000+n, and the value of n can be set according to actual needs. For example, if it is set to 50, then the deviation range is 950 to 1050. At the same time, multiple motor speed points are selected according to the preset interval N. For example, if the preset interval N is 20, then the six motor speed points of 950, 970, 990, 1010, 1030, and 1050 are selected.

[0033] The speed noise test specifically includes: adjusting the speed of the motor to multiple motor speed points one by one, and obtaining the noise coefficient of the motor when it is running at each of the motor speed points;

[0034] During the specific test, the speed gears can be arranged from low to high. First, multiple motor speed points in the low speed gear are tested, then multiple motor speed points in the medium speed gear are tested, and finally multiple speed points in the high speed gear are tested. Each time a speed point is tested, its corresponding noise coefficient is recorded, so that data of each speed point and its corresponding noise coefficient can be obtained.

[0035] In a specific embodiment, screening a replacement speed value for each gear that meets the environmental noise requirement based on the speed noise test results specifically includes:

[0036] First, obtain the noise coefficients of multiple motor speed points selected by the preset speed selection rules for each gear, and then select the motor speed point corresponding to the environmental noise requirements from the multiple noise coefficients of each gear, and use this motor speed point as the replacement speed value for the corresponding gear that meets the preset environmental noise requirements.

[0037] For example, the motor speed point is a low speed gear of 1000 rpm. Among the six motor speed points of 950, 970, 990, 1010, 1030, and 1050, 970 rpm meets the environmental noise requirements. Then 970 rpm is used as the replacement speed value for the low speed gear.

[0038] Screening the replacement speed value for each gear that meets the environmental noise requirements based on the speed noise test results also includes: when the noise coefficient of multiple motor speed points selected by the gear through the preset speed selection rules does not meet the environmental noise requirements, the gear continues to use the original motor speed point and prompts a fault.

[0039] For example, if the motor speed point is a low-speed gear of 1000 rpm, the noise coefficients of six of the selected motor speed points of 950, 970, 990, 1010, 1030, and 1050 do not meet the environmental noise requirements during operation. In this case, 1000 rpm is still used as the low-speed motor speed point, and a fault code is reported. Because the environmental noise may not be caused by the motor speed at this time, maintenance personnel or users need to choose other methods to handle it to avoid misadjusting the speed and causing a decline in user experience.

[0040] Screening the replacement speed value for each gear that meets the environmental noise requirements based on the speed noise test results also includes: when there are multiple motor speed points corresponding to the selected noise coefficient that meets the environmental noise requirements, selecting the motor speed point with the smallest speed as the replacement speed value for the gear that meets the environmental noise requirements.

[0041] For example, when the motor speed point is a low-speed gear of 1000 rpm, among the six motor speed points of 950, 970, 990, 1010, 1030, and 1050, the four motor speed points of 970, 1010, 1030, and 1050 rpm all meet the preset environmental noise requirements when running. From these four speed points, the one with the smallest speed is selected, that is, 970 rpm is used as the replacement speed value for the low-speed gear.

[0042] The specific method for obtaining the noise coefficient of the motor is as follows:

[0043] Common fan noises in air conditioners can be divided into three categories: electromagnetic noise, duct noise, and bearing noise. Duct noise is airflow noise, not generated by the motor, so its peak noise can be ignored, and data comparison with other noise peaks can be performed.

[0044] The noise is measured by the noise detection unit on the control panel of the air conditioner. Since the frequency range of audible sound for human ears is 20~20000Hz, the total noise value D is measured within this range. n总 and peak noise value D n峰 , the noise difference D of the motor speed point n差 Compared with the standard value D 标 Compare and get the noise coefficient D at the speed point nα

[0045] D n差 =D n总 -D n峰

[0046]

[0047] When the noise factor D nα >1, the motor speed point is directly excluded, that is, it does not meet the environmental noise requirements; when the noise coefficient Dnα When ≤1, the motor speed point meets the environmental noise requirements; when the noise coefficients of multiple motor speed points meet the environmental noise requirements, energy consumption can be compared to select the optimal speed, for example, select the smallest motor speed point.

[0048] When all the motor speed ranges (i.e., deviation range) fail to meet the requirements during the test, the motor speed point of this gear will still use the qualified speed of the last test, and an alarm code will be fed back. The customer can notify the maintenance personnel to repair the unit.

[0049] The present invention also provides an air conditioner that uses the above-mentioned motor control method to adjust the motor speed and reduce the noise of the air conditioner indoor unit. The air conditioner is a conventional air conditioner, comprising an indoor unit and an outdoor unit. The indoor unit is provided with an indoor unit control panel, and the indoor unit control panel is provided with a noise detection unit for detecting noise.

[0050] The present invention also provides a computer storage medium for storing a computer program, wherein the computer program executes the above-mentioned motor control method when running.

[0051] In one or more exemplary embodiments, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software as a computer program product, the functions may be stored on or transmitted via a computer-readable medium as one or more instructions or codes. Computer-readable media include both computer storage media and communication media, including any media that facilitates the transfer of a computer program from one location to another. A storage medium may be any available medium that can be accessed by a computer. By way of example and not limitation, such computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Any connection is also properly referred to as a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwaves, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwaves are included in the definition of medium. As used herein, disk and disc include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, where disks typically reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0052] Thus far, various embodiments of the present disclosure have been described in detail. To avoid obscuring the concept of the present disclosure, some details known in the art have not been described. Based on the above description, those skilled in the art can fully understand how to implement the technical solutions disclosed herein.

[0053] It should be noted that the terms used above are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0054] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0055] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0056] Although some specific embodiments of the present disclosure have been described in detail through examples, those skilled in the art will understand that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. Those skilled in the art will understand that the above embodiments may be modified or some technical features may be replaced with equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A method for controlling a motor, characterized in that: Including steps: Enter the noise self-test mode; Get the current motor speed point for each gear of the motor; According to the preset speed selection rules, multiple motor speed points close to the current motor speed point of each gear are selected for speed noise testing, and replacement speed values ​​that meet the environmental noise requirements for each gear are selected based on the speed noise test results; The speed noise test specifically includes: adjusting the speed of the motor to the plurality of motor speed points one by one, and obtaining the noise coefficient of the motor when the motor is running at each of the motor speed points; The method of screening the replacement speed value that meets the environmental noise requirements for each gear according to the speed noise test results specifically includes: Obtaining the noise coefficients of a plurality of motor speed points selected by a preset speed selection rule for each gear, and selecting the motor speed point corresponding to the noise coefficient that meets the environmental noise requirement as a replacement speed value for the gear that meets the environmental noise requirement; The method of screening the replacement speed value for each gear that meets the environmental noise requirements based on the speed noise test results also includes: when the noise coefficients of multiple motor speed points selected by the gear through the preset speed selection rules do not meet the environmental noise requirements, the gear continues to use the original motor speed point and prompts a fault.

2. The motor control method according to claim 1, wherein: The preset speed selection rules specifically include: The motor speed point of the gear is determined, a deviation range of the motor speed point of the gear is set, and a plurality of motor speed points are selected within the deviation range according to preset intervals.

3. The motor control method according to claim 1, wherein: The method of screening the replacement speed value for each gear that meets the environmental noise requirements based on the speed noise test results also includes: when there are multiple motor speed points corresponding to the environmental noise requirements in the selected noise coefficient, selecting the motor speed point with the smallest speed point as the replacement speed value for the gear that meets the environmental noise requirements.

4. The motor control method according to claim 1, wherein: The method of obtaining the noise coefficient of the motor when it is running at each motor speed point is specifically as follows: obtaining the total noise value and the peak noise value of the motor when it is running at the motor speed point, subtracting the peak noise value from the total noise value to obtain the noise difference at the motor speed point, and comparing the noise difference with a preset standard value to obtain the noise coefficient at the motor speed point.

5. The motor control method according to claim 4, wherein: When the noise coefficient at the motor speed point is greater than 1, it is determined that the environmental noise requirement is not met; when the noise coefficient at the motor speed point is less than or equal to 1, it is determined that the environmental noise requirement is met.

6. An air conditioner, characterized in that: The motor control method according to any one of claims 1 to 5 is used to adjust the motor speed and reduce noise.

7. A computer storage medium for storing a computer program, characterized in that: When the computer program is executed, the motor control method according to any one of claims 1 to 5 is executed.

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