Fan system monitoring method, medium and extractor hood

Abstract

The application relates to a fan system monitoring method, medium and extractor hood. When the deviation values of the motor shaft end points relative to the center point of the whole extractor hood in the axial direction, the radial direction and the tangential direction are all less than a first preset displacement deviation threshold value, and the current running speed value of the motor when the motor runs stably is greater than a preset running speed value, the total voltage value of the motor in each direction within a preset running time period at the current running speed is calculated, the displacement deviation values of the motor shaft end points relative to the center of the front cover opening of the volute and the center of the rear cover opening of the volute in each direction when the motor runs stably are detected, and when each displacement deviation value does not satisfy the condition of being less than a second preset displacement deviation threshold value, if the average displacement deviation value of the front cover of the volute is greater than or equal to the average displacement deviation value of the rear cover of the volute, the front air inlet area is adjusted; otherwise, the front air inlet area and the rear air inlet area are respectively adjusted, so that the air inlet area of the fan is not affected by the three-direction vibration of the motor, and the oil fume suction effect is improved.

Description

Technical Field

[0001] This invention relates to the field of range hoods, and more particularly to a method for monitoring a fan system, a medium, and a range hood. Background Technology

[0002] The fan system is the core power component of the entire range hood. It includes components such as the volute, impeller, and motor. The motor is the power source for the fan system. The impeller is mounted on the motor shaft, and the motor is connected to the rear cover of the volute via a motor mounting bracket, which is welded to the rear plate of the volute. The center of the air intake area of ​​the fan system usually coincides with or is located at the exact center of the range hood. The size of the air intake area directly affects the smoke extraction efficiency.

[0003] During the actual operation of a range hood, the fan system is fixed to the top and rear panel via a volute mounting bracket, and the motor is connected to the volute rear cover via a motor mounting bracket. Therefore, during motor rotation, the motor excitation body will experience displacement deviations in three directions: axial (i.e., the extension direction of the motor shaft), radial (i.e., the rotation direction of the motor), and tangential (i.e., the direction perpendicular to the axial direction). These displacement deviations are transmitted to the volute front and rear covers, causing them to vibrate in the aforementioned three directions, affecting the air intake area and resulting in unstable airflow in the air intake area, thus reducing the fume extraction effect. Summary of the Invention

[0004] The first technical problem to be solved by this invention is to provide a fan system monitoring method that addresses the aforementioned prior art. This fan system monitoring method can adjust the size of the air intake area of ​​the operating fan system to improve the fume extraction effect of the range hood.

[0005] The second technical problem to be solved by the present invention is to provide a readable storage medium for implementing the above-described wind turbine system monitoring method.

[0006] The third technical problem to be solved by the present invention is to provide a range hood that applies the above-mentioned fan system monitoring method.

[0007] The technical solution adopted by this invention to solve the first technical problem is: a wind turbine system monitoring method, characterized in that it includes:

[0008] Step 1: Detect the displacement deviation values ​​of the motor shaft end point of the fan system relative to the center point of the range hood in the axial, radial, and tangential directions, respectively; where the extension direction of the motor shaft is the axial direction, the rotation direction of the motor is the radial direction, and the direction perpendicular to the axial direction is the tangential direction.

[0009] Step 2: Compare the detected displacement deviation values ​​with the first preset displacement deviation threshold to make a judgment.

[0010] When all displacement deviation values ​​are less than the first preset displacement deviation threshold, proceed to step 3; otherwise, determine that the motor shaft assembly is abnormally misaligned.

[0011] Step 3: Detect the current operating speed of the motor when it is running smoothly;

[0012] Step 4: Compare the detected current operating speed value with the preset operating speed value.

[0013] If the current operating speed is equal to the preset operating speed, proceed to step 5; otherwise, let the motor continue running and proceed to step 3.

[0014] Step 5: Obtain the three-phase voltage values ​​of the motor during the preset operating time period at the current operating speed, and calculate the total value of each phase voltage of the motor during the preset operating time period; wherein, the three-phase voltage values ​​of the motor are the three terminal voltages of the motor.

[0015] Step 6: Detect the displacement deviation values ​​in the axial, radial and tangential directions of the motor shaft end point relative to the center of the opening of the front cover of the volute and the motor shaft end point relative to the center of the opening of the rear cover of the volute when the motor is running stably during the preset operating time period.

[0016] Step 7: Perform a judgment process on the detected displacement deviation values ​​and compare them with the second preset displacement deviation threshold.

[0017] If all displacement deviation values ​​are less than the second preset displacement deviation threshold, proceed to step 1; otherwise, proceed to step 8.

[0018] Step 8: Calculate the average displacement deviation of the front cover of the volute and the average displacement deviation of the rear cover of the volute based on the detected displacement deviation values.

[0019] Step 9: Perform a judgment process on the calculated average displacement deviation of the front cover and the average displacement deviation of the rear cover of the volute:

[0020] When the average displacement deviation of the front cover of the volute is greater than or equal to the average displacement deviation of the rear cover of the volute, the forward airflow area is adjusted; otherwise, both the forward airflow area and the rear airflow area are adjusted separately.

[0021] Improved, in the wind turbine system monitoring method, the adjustment process of the forward airflow area includes the following steps a1 to a3:

[0022] Step a1: Obtain the maximum and minimum displacement deviation values ​​of the opening center of the volute front cover relative to the motor shaft end point in the axial direction, the maximum and minimum displacement deviation values ​​in the radial direction, and the maximum and minimum displacement deviation values ​​in the tangential direction, and calculate the average displacement deviation values ​​in the axial direction, the average displacement deviation values ​​in the radial direction, and the average displacement deviation values ​​in the tangential direction respectively.

[0023] Step a2: Calculate the difference between the maximum displacement deviation value in each direction and the average displacement deviation value in the corresponding direction, as well as the difference between the minimum displacement deviation value in each direction and the average displacement deviation value in the corresponding direction, and select the maximum difference in the same direction; wherein, each direction includes axial, radial and tangential directions;

[0024] Step a3: Adjust the motor's operating voltage and run the motor at the adjusted operating voltage until the maximum difference in each selected direction is the preset difference.

[0025] Furthermore, in the fan system monitoring method, the adjustment process for the rear air intake area includes the following steps b1 to b3:

[0026] Step b1: Obtain the maximum and minimum displacement deviation values ​​of the center of the opening of the volute back cover relative to the end point of the motor shaft in the axial direction, the maximum and minimum displacement deviation values ​​in the radial direction, and the maximum and minimum displacement deviation values ​​in the tangential direction, and calculate the average displacement deviation values ​​in the axial direction, the average displacement deviation values ​​in the radial direction, and the average displacement deviation values ​​in the tangential direction respectively.

[0027] Step b2: Calculate the difference between the maximum displacement deviation value in each direction and the average displacement deviation value in the corresponding direction, as well as the difference between the minimum displacement deviation value in each direction and the average displacement deviation value in the corresponding direction, and select the maximum difference in the same direction; wherein, each direction includes axial, radial and tangential directions;

[0028] Step b3: Adjust the motor's operating voltage and run the motor at the adjusted operating voltage until the maximum difference in each selected direction is the preset difference.

[0029] In a further improvement, the operating voltage adjustment method for the motor in the aforementioned fan system monitoring method is as follows:

[0030] U' x,y,z = (1 + β%·T) s )·U x,y,z ;

[0031] Among them, U' x,y,z U is the adjusted motor operating voltage. x,y,zT represents the motor operating voltage before adjustment, β represents the regulation rate of the motor operating voltage, 0 < β ≤ 100%, and T represents the operating voltage of the motor. s This refers to the number of times the motor's operating voltage is adjusted.

[0032] Further improvements are made to the wind turbine system monitoring method, where the average displacement deviation of the front cover of the volute and the average displacement deviation of the rear cover of the volute are calculated as follows:

[0033]

[0034]

[0035] Among them, l f The average displacement deviation of the front cover of the volute, l f,x l is the axial displacement deviation of the motor shaft end point relative to the center of the opening in the front cover of the volute. f,y l is the radial displacement deviation of the motor shaft end point relative to the center of the opening in the volute front cover. f,z l0 is the displacement deviation value of the motor shaft end point relative to the center of the opening of the front cover of the volute in the tangential direction, l0 is the displacement deviation reference value, and l0≠0;

[0036] l b The average displacement deviation of the rear cover of the volute, l b,x l is the axial displacement deviation of the motor shaft end point relative to the center of the opening in the volute rear cover. b,y l is the radial displacement deviation of the motor shaft end point relative to the center of the opening in the volute rear cover. b,z This is the tangential displacement deviation of the motor shaft end point relative to the center of the opening in the volute rear cover.

[0037] Improvedly, in the wind turbine system monitoring method, in step 5, the total value of the voltage in each direction of the motor during the preset operating time period is calculated as follows:

[0038] The total axial voltage of the motor during the preset operating time period is marked as U. X , f s N is the sampling frequency for voltage values. s To operate within the preset time period according to the sampling frequency f s The total number of voltage values ​​collected, U X,n This refers to the nth axial voltage value collected within the preset operating time period;

[0039] The total radial voltage of the motor during the preset operating time period is marked as U. Y , f s N is the sampling frequency for voltage values. s To operate within the preset time period according to the sampling frequency fs The total number of voltage values ​​collected, U Y,n This refers to the nth radial voltage value collected within the preset operating time period;

[0040] The total tangential voltage of the motor during the preset operating period is denoted as U. Z , f s N is the sampling frequency for voltage values. s To operate within the preset time period according to the sampling frequency f s The total number of voltage values ​​collected, U Z,n The nth tangential voltage value collected within the preset operating time period.

[0041] The technical solution adopted by the present invention to solve the second technical problem is: a readable storage medium having a computer program stored thereon, characterized in that, when the computer program is executed by a processor, it implements the wind turbine system monitoring method described in any one of the claims.

[0042] The technical solution adopted by the present invention to solve the third technical problem is: a range hood, characterized in that it applies any of the fan system monitoring methods described in the present invention.

[0043] Compared with the prior art, the advantages of the present invention are as follows: The fan system monitoring method of the present invention compares the detected displacement deviation values ​​of the motor shaft end point relative to the center point of the range hood in the axial, radial and tangential directions with a first preset displacement deviation threshold. Once the displacement deviation values ​​in each direction are less than the first preset displacement deviation threshold, the current operating speed value when the motor is running smoothly is compared with the preset operating speed value. When the current operating speed value is greater than the preset operating speed value, the total voltage value of the motor in each direction within a preset operating time period at the current operating speed is calculated. Then, the displacement deviation values ​​of the motor shaft end point relative to the center of the opening of the front cover of the volute and the motor shaft end point relative to the center of the opening of the rear cover of the volute are detected in the axial, radial and tangential directions, respectively, when the motor is running stably within the preset operating time period. When each displacement deviation value does not meet the requirement of being less than the second preset displacement deviation threshold, it is determined that the average displacement deviation value of the front cover of the volute is greater than or equal to the average displacement deviation value of the rear cover of the volute, and the front air intake area is adjusted; otherwise, both the front air intake area and the rear air intake area are adjusted separately. In this way, the adjustment of the air intake area offset caused by the unbalanced three-dimensional vibration of the motor during the operation of the fan is realized, ensuring that the air intake area of ​​the fan is not affected by the three-dimensional vibration of the motor. Attached Figure Description

[0044] Figure 1 This is a flowchart illustrating the wind turbine system monitoring method in an embodiment of the present invention. Detailed Implementation

[0045] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0046] This embodiment provides a method for monitoring the fan system of a range hood. See also: Figure 1 As shown, the wind turbine system monitoring method of this embodiment includes the following steps:

[0047] Step 1: Detect the displacement deviation values ​​of the motor shaft end point of the fan system relative to the center point of the range hood in the axial, radial, and tangential directions, respectively; where the extension direction of the motor shaft is the axial direction, the rotation direction of the motor is the radial direction, and the direction perpendicular to the axial direction is the tangential direction.

[0048] For example, in this embodiment, the axial displacement deviation of the motor shaft end point relative to the center point of the range hood is marked as l. x,o The radial displacement deviation of the motor shaft end point relative to the center point of the range hood is marked as l. y,o The displacement deviation of the motor shaft end point relative to the center point of the range hood in the tangential direction is marked as l. z,o ;

[0049] Step 2: Compare the detected displacement deviation values ​​with the first preset displacement deviation threshold to make a judgment.

[0050] When all deviation values ​​are less than the first preset displacement deviation threshold, proceed to step 3; otherwise, determine that the motor shaft assembly is abnormally eccentric.

[0051] For example, the first preset displacement deviation threshold set here is marked as l TH1 Once the detected displacement deviation value l x,o l y,o and l z,o All less than l TH1 Then proceed to step 3; once any displacement deviation value is greater than or equal to the first preset displacement deviation threshold l TH1 The motor shaft assembly is then determined to be abnormally eccentric;

[0052] Step 3: Detect the current operating speed of the motor when it is running smoothly; for example, assume that the current operating speed of the motor when it is running smoothly is marked as V;

[0053] Step 4: Compare the detected current operating speed value with the preset operating speed value.

[0054] If the current operating speed is equal to the preset operating speed, proceed to step 5; otherwise, let the motor continue running and proceed to step 3.

[0055] Assume the preset operating speed value is marked as V a Once the current operating speed value V = V is detected aIf the motor continues to run, proceed to step 5; otherwise, continue running the motor and proceed to step 3.

[0056] Step 5: Obtain the three-phase voltage values ​​of the motor during the preset operating time period at the current operating speed, and calculate the total value of each phase voltage of the motor during the preset operating time period; wherein, the three-phase voltage values ​​of the motor are the three terminal voltages of the motor.

[0057] Assuming the preset operating time period is denoted as T, the total values ​​of the three end voltages of the motor within this preset operating time period T are the total axial voltage value U. X Total radial voltage U Y and the total tangential voltage U Z ;Specifically:

[0058] Total axial voltage f s N is the sampling frequency for voltage values. s To achieve the desired result within a preset running time period T according to the sampling frequency f s The total number of voltage values ​​collected, U X,n This refers to the nth axial voltage value collected within a preset operating time period T.

[0059] Total radial voltage of the motor within a preset operating time period T f s N is the sampling frequency for voltage values. s To achieve the desired result within a preset running time period T according to the sampling frequency f s The total number of voltage values ​​collected, U Y,n This refers to the nth radial voltage value collected within a preset operating time period T.

[0060] Total tangential voltage of the motor within the preset operating time period T f s N is the sampling frequency for voltage values. s To achieve the desired result within a preset running time period T according to the sampling frequency f s The total number of voltage values ​​collected, U Z,n This refers to the nth tangential voltage value collected within a preset operating time period T.

[0061] Step 6: Detect the displacement deviation values ​​in the axial, radial and tangential directions of the motor shaft end point relative to the center of the opening of the front cover of the volute and the motor shaft end point relative to the center of the opening of the rear cover of the volute when the motor is running stably during the preset operating time period.

[0062] For example, in this embodiment, when the motor is running stably within the preset operating time period T, the axial displacement deviation of the motor shaft end point relative to the center of the opening in the volute front cover is marked as l. f,xThe radial displacement deviation of the motor shaft end point relative to the center of the opening in the front cover of the volute is marked as l. f,y The displacement deviation of the motor shaft end point relative to the center of the opening in the front cover of the volute in the tangential direction is marked as l. f,z ;

[0063] l b The average displacement deviation of the volute housing rear cover is denoted as l. The axial displacement deviation of the motor shaft end point relative to the center of the opening in the volute housing rear cover is marked as l. b,x The radial displacement deviation of the motor shaft end point relative to the center of the opening in the volute rear cover is marked as l. b,y The displacement deviation of the motor shaft end point relative to the center of the opening in the volute rear cover in the tangential direction is marked as l. b,z ;

[0064] Step 7: Perform a judgment process on each displacement deviation value detected in Step 6 and its comparison with the second preset displacement deviation threshold.

[0065] If all displacement deviation values ​​are less than the second preset displacement deviation threshold, proceed to step 1; otherwise, proceed to step 8.

[0066] For example, the second preset displacement deviation threshold here is marked as l TH2 Once the detected displacement deviation value l f,x l f,y l f,z l b,x l b,y and l b,z All are less than the second preset displacement deviation threshold l TH2 If the result is positive, proceed to step 1; otherwise, proceed to step 8.

[0067] Step 8: Calculate the average displacement deviation of the front cover and the average displacement deviation of the rear cover of the volute based on the detected displacement deviation values; for example, in this embodiment, assume the average displacement deviation of the front cover of the volute is labeled as l. f The average displacement deviation of the rear cover of the volute is marked as l. b The calculation method is as follows:

[0068]

[0069]

[0070] Wherein, l0 is the displacement deviation reference value, l0≠0; for example, the displacement deviation reference value l0 ranges from 0.5mm to 0.8mm;

[0071] Step 9: Perform a judgment process on the calculated average displacement deviation of the front cover and the average displacement deviation of the rear cover of the volute:

[0072] When the average displacement deviation of the front cover of the volute is greater than or equal to the average displacement deviation of the rear cover of the volute, the forward airflow area is adjusted; otherwise, both the forward airflow area and the rear airflow area are adjusted separately.

[0073] In other words, in step 9, once the average displacement deviation of the front cover of the volute is l f ≥ Average displacement deviation of the rear cover of the volute b If so, the forward airflow area will be adjusted; and once l f <l b Then, adjustments are made to both the forward airflow area and the rear airflow area.

[0074] It should be noted that, in this embodiment, the adjustment process for the forward airflow area includes the following steps a1 to a3:

[0075] Step a1: Obtain the maximum and minimum displacement deviation values ​​of the opening center of the volute front cover relative to the motor shaft end point in the axial direction, the maximum and minimum displacement deviation values ​​in the radial direction, and the maximum and minimum displacement deviation values ​​in the tangential direction, and calculate the average displacement deviation values ​​in the axial direction, the average displacement deviation values ​​in the radial direction, and the average displacement deviation values ​​in the tangential direction respectively.

[0076] For example, the result after processing is as follows:

[0077] The maximum and minimum axial displacement deviations of the opening center of the volute front cover relative to the motor shaft end point are respectively marked as l. max,x and l min,x The average axial displacement deviation is marked as l ave,x ,

[0078] The maximum and minimum radial displacement deviations of the opening center of the volute front cover relative to the motor shaft end point are respectively marked as l. max,y and l min,y The average radial displacement deviation is marked as l ave,y ,

[0079] The maximum and minimum displacement deviations of the opening center of the volute front cover relative to the motor shaft endpoint in the tangential direction are respectively marked as l. max,z and l min,z The average displacement deviation in the tangential direction is marked as l. ave,z ,

[0080] Step a2: Calculate the difference between the maximum displacement deviation value in each direction and the average displacement deviation value in the corresponding direction, as well as the difference between the minimum displacement deviation value in each direction and the average displacement deviation value in the corresponding direction, and select the maximum difference in the same direction; wherein, each direction includes axial, radial and tangential directions;

[0081] Specifically:

[0082] Regarding the axial direction, the maximum axial displacement deviation value l max,x The average displacement deviation l in the corresponding direction ave,x The difference between them is denoted as Δl 1,x , △l 1,x =l max,x -l ave,x Minimum axial displacement deviation value l min,x The average displacement deviation l in the corresponding direction ave,x The difference between them is denoted as Δl 2,x , Δl 2,x =l min,x -l ave,x Assuming the difference Δl 1,x and △l 2,x After comparing the magnitudes, the maximum difference along this axis is Δl. 2,x ;

[0083] Regarding the radial direction, the maximum radial displacement deviation value l max,y The average displacement deviation l in the corresponding direction ave,y The difference between them is marked as △l 1,y , △l 1,y =l max,y -l ave,y Minimum radial displacement deviation value l min,y The average displacement deviation l in the corresponding direction ave,y The difference between them is denoted as Δl 2,y , Δl 2,y =l min,y -l ave,y Assuming the difference Δl 1,y and Δl 2,y After comparing the magnitudes, the maximum difference in this radial direction is Δl. 1,y ;

[0084] For the tangential direction, the maximum displacement deviation value l in the tangential direction max,z The average displacement deviation l in the corresponding direction ave,z The difference between them is denoted as Δl 1,z , Δl 1,z =l max,z -l ave,z Minimum displacement deviation value in the tangential direction lmin,z The average displacement deviation l in the corresponding direction ave,z The difference between them is denoted as Δl 2,z , Δl 2,z =l min,z -l ave,z Assuming the difference Δl 1,z and Δl 2,z After comparing the magnitudes, the maximum difference along the tangential direction is Δl. 2,z ;

[0085] Step a3: Adjust the motor's operating voltage and run the motor at the adjusted voltage until the maximum difference in each selected direction is the preset difference. That is, adjust the motor's operating voltage again until all calculated maximum differences are the preset differences, for example, the maximum difference Δl. 2,x =Δl 1,y =Δl 2,z When the value equals Δl, where Δl is a preset difference, it is considered that the desired air intake area size adjustment effect has been achieved. The adjustment method for the motor's operating voltage is as follows:

[0086] U' x,y,z = (1 + β%·T) s )·U x,y,z ;

[0087] Among them, U' x,y,z U is the adjusted motor operating voltage. x,y,z T represents the motor operating voltage before adjustment, β represents the regulation rate of the motor operating voltage, 0 < β ≤ 100%, and T represents the operating voltage of the motor. s This refers to the number of times the motor's operating voltage is adjusted.

[0088] Specifically, in this embodiment, the adjustment process for the rear air intake area includes the following steps b1 to b3:

[0089] Step b1: Obtain the maximum and minimum displacement deviation values ​​of the center of the opening of the volute back cover relative to the end point of the motor shaft in the axial direction, the maximum and minimum displacement deviation values ​​in the radial direction, and the maximum and minimum displacement deviation values ​​in the tangential direction, and calculate the average displacement deviation values ​​in the axial direction, the average displacement deviation values ​​in the radial direction, and the average displacement deviation values ​​in the tangential direction respectively.

[0090] Step b2: Calculate the difference between the maximum displacement deviation value in each direction and the average displacement deviation value in the corresponding direction, as well as the difference between the minimum displacement deviation value in each direction and the average displacement deviation value in the corresponding direction, and select the maximum difference in the same direction; wherein, each direction includes axial, radial and tangential directions;

[0091] Step b3: Adjust the motor's operating voltage and run the motor at the adjusted voltage until the maximum difference in each selected direction is the preset difference. The method for adjusting the motor's operating voltage is as follows:

[0092] U' x,y,z = (1 + β%·T) s )·U x,y,z ;

[0093] Among them, U' x,y,z U is the adjusted motor operating voltage. x,y,z T represents the motor operating voltage before adjustment, β represents the regulation rate of the motor operating voltage, 0 < β ≤ 100%, and T represents the operating voltage of the motor. s This refers to the number of times the motor's operating voltage is adjusted.

[0094] The adjustment process for the rear air intake area is the same as that for the front air intake area, and will not be repeated here.

[0095] This embodiment also provides a readable storage medium. Specifically, the readable storage medium stores a computer program, which, when executed by a processor, implements the aforementioned wind turbine system monitoring method.

[0096] This embodiment also provides a range hood. The range hood utilizes the aforementioned fan system monitoring method.

[0097] Although preferred embodiments of the present invention have been described in detail above, it should be clearly understood that various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for monitoring a wind turbine system, characterized in that, include: Step 1: Detect the displacement deviation values ​​of the motor shaft end point of the fan system relative to the center point of the range hood in the axial, radial, and tangential directions, respectively; where the extension direction of the motor shaft is the axial direction, the rotation direction of the motor is the radial direction, and the direction perpendicular to the axial direction is the tangential direction. Step 2: Compare the displacement deviation values ​​detected in Step 1 with the first preset displacement deviation threshold for judgment processing: When all deviation values ​​are less than the first preset displacement deviation threshold, proceed to step 3; otherwise, determine that the motor shaft assembly is abnormally eccentric. Step 3: Detect the current operating speed of the motor when it is running smoothly; Step 4: Compare the detected current operating speed value with the preset operating speed value. If the current operating speed is equal to the preset operating speed, proceed to step 5; otherwise, let the motor continue running and proceed to step 3. Step 5: Obtain the three-phase voltage values ​​of the motor during the preset operating time period at the current operating speed, and calculate the total value of each phase voltage of the motor during the preset operating time period; wherein, the three-phase voltage values ​​of the motor are the three terminal voltages of the motor. Step 6: Detect the displacement deviation values ​​in the axial, radial and tangential directions of the motor shaft end point relative to the center of the opening of the front cover of the volute and the motor shaft end point relative to the center of the opening of the rear cover of the volute when the motor is running stably during the preset operating time period. Step 7: Perform a judgment process on the displacement deviation values ​​detected in Step 6 and their comparison with the second preset displacement deviation threshold. If all displacement deviation values ​​are less than the second preset displacement deviation threshold, proceed to step 1; otherwise, proceed to step 8. Step 8: Based on the displacement deviation values ​​detected in Step 6, calculate the average displacement deviation of the front cover of the volute and the average displacement deviation of the rear cover of the volute. Step 9: Perform a judgment process on the calculated average displacement deviation of the front cover and the average displacement deviation of the rear cover of the volute: When the average displacement deviation of the front cover of the volute is greater than or equal to the average displacement deviation of the rear cover of the volute, the forward airflow area is adjusted; otherwise, both the forward airflow area and the rear airflow area are adjusted separately.

2. The wind turbine system monitoring method according to claim 1, characterized in that, The adjustment process for the forward airflow area includes the following steps a1 to a3: Step a1: Obtain the maximum and minimum displacement deviation values ​​of the opening center of the volute front cover relative to the motor shaft end point in the axial direction, the maximum and minimum displacement deviation values ​​in the radial direction, and the maximum and minimum displacement deviation values ​​in the tangential direction, and calculate the average displacement deviation values ​​in the axial direction, the average displacement deviation values ​​in the radial direction, and the average displacement deviation values ​​in the tangential direction respectively. Step a2: Calculate the difference between the maximum displacement deviation value in each direction and the average displacement deviation value in the corresponding direction, as well as the difference between the minimum displacement deviation value in each direction and the average displacement deviation value in the corresponding direction, and select the maximum difference in the same direction; wherein, each direction includes axial, radial and tangential directions; Step a3: Adjust the motor's operating voltage and run the motor at the adjusted operating voltage until the maximum difference in each selected direction is the preset difference.

3. The wind turbine system monitoring method according to claim 2, characterized in that, The adjustment process for the rear air intake area includes the following steps b1 to b3: Step b1: Obtain the maximum and minimum displacement deviation values ​​of the center of the opening of the volute back cover relative to the end point of the motor shaft in the axial direction, the maximum and minimum displacement deviation values ​​in the radial direction, and the maximum and minimum displacement deviation values ​​in the tangential direction, and calculate the average displacement deviation values ​​in the axial direction, the average displacement deviation values ​​in the radial direction, and the average displacement deviation values ​​in the tangential direction respectively. Step b2: Calculate the difference between the maximum displacement deviation value in each direction and the average displacement deviation value in the corresponding direction, as well as the difference between the minimum displacement deviation value in each direction and the average displacement deviation value in the corresponding direction, and select the maximum difference in the same direction; wherein, each direction includes axial, radial and tangential directions; Step b3: Adjust the motor's operating voltage and run the motor at the adjusted operating voltage until the maximum difference in each selected direction is the preset difference.

4. The wind turbine system monitoring method according to claim 2 or 3, characterized in that, The operating voltage of the motor is adjusted as follows: ； in, The adjusted motor operating voltage. The motor operating voltage before adjustment. β The regulation rate of the motor's operating voltage, 0 < β ≤100%, T s This refers to the number of times the motor's operating voltage is adjusted.

5. The wind turbine system monitoring method according to claim 2 or 3, characterized in that, The average displacement deviation of the front cover and the average displacement deviation of the rear cover of the volute are calculated as follows: ； ； in, l f This represents the average displacement deviation of the front cover of the volute. l f,x This represents the axial displacement deviation of the motor shaft end point relative to the center of the opening in the volute front cover. l f,y This is the radial displacement deviation of the motor shaft end point relative to the center of the opening in the front cover of the volute. l f,z This represents the tangential displacement deviation of the motor shaft end point relative to the center of the opening in the front cover of the volute. l 0 represents the baseline value for displacement deviation. l 0 ≠ 0; l b This represents the average displacement deviation of the rear cover of the volute. l b,x This represents the axial displacement deviation of the motor shaft end point relative to the center of the opening in the volute rear cover. l b,y This is the radial displacement deviation of the motor shaft end point relative to the center of the opening in the volute rear cover. l b,z This is the tangential displacement deviation of the motor shaft end point relative to the center of the opening in the volute rear cover.

6. The wind turbine system monitoring method according to claim 2 or 3, characterized in that, In step 5, the total voltage values ​​in each direction of the motor during the preset operating time period are calculated as follows: The total axial voltage of the motor during the preset operating time period is marked as follows: U X , ; f s The sampling frequency for voltage values, N s To operate within the preset time period according to the sampling frequency f s The total number of voltage values ​​collected. U X,n For the first time period collected within the preset running time period n One axial voltage value; The total radial voltage of the motor during the preset operating time period is marked as follows: U Y , ; f s The sampling frequency for voltage values, N s To operate within the preset time period according to the sampling frequency f s The total number of voltage values ​​collected. U Y,n For the first time period collected within the preset running time period n One radial voltage value; The total tangential voltage of the motor during the preset operating period is marked as follows: U Z , ; f s The sampling frequency for voltage values, N s To operate within the preset time period according to the sampling frequency f s The total number of voltage values ​​collected. U Z,n For the first time period collected within the preset running time period n One tangential voltage value.

7. A readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the wind turbine system monitoring method according to any one of claims 1 to 6.

8. A range hood, characterized in that, The wind turbine system monitoring method as described in any one of claims 1 to 6 is applied.

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