CN110440346A - A kind of noise processing method and device of air-conditioner outdoor unit - Google Patents

Abstract

The present invention provides a noise processing method and device for an outdoor unit of an air conditioner. The noise processing method for an outdoor unit of an air conditioner includes: obtaining the fan noise generated by the fan of the outdoor unit; generating a fan noise spectrum according to the fan noise; collecting noise in the noise spectrum The noise peak frequency f corresponding to the electromagnetic noise generated by the fan; according to the noise decibel value corresponding to the noise peak frequency f, determine the method of increasing the weight of the fan blades of the fan. Beneficial effects of the present invention: After collecting and acquiring the noise of the fan in the outdoor unit of the air conditioner, by generating the noise spectrum diagram, the noise peak frequency f corresponding to the electromagnetic noise in the noise spectrum diagram can be collected, so that when the noise is processed According to the decibel value of the noise, the method of increasing the weight of the fan blades of the fan can be determined, so that the operator can increase the weight of the fan blades according to the weight gain method, thereby reducing the axial vibration of the fan blades, and then reducing the electromagnetic noise generated by the fan.

Description

Noise treatment method and device for outdoor unit of air conditioner

technical field

The invention relates to the technical field of noise treatment, in particular to a noise treatment method and device for an outdoor unit of an air conditioner.

Background technique

With the popularization of air conditioners, the problem of air conditioner noise complaints has become more and more prominent. Therefore, how to quickly and accurately identify the noise source and quickly and effectively solve the noise problem has become one of the research hotspots of various air-conditioning companies.

When the outdoor unit of the air conditioner is running, during the operation of the fan, the blades vibrate along the axial direction of the motor shaft when the fan blades are running, which drives the motor shaft to move back and forth in the axial direction, which causes the electromagnetic field of the motor to continuously change and cause electromagnetic noise. The situation is usually caused by the production defect of the fan blade during the production process of the outdoor unit of the air conditioner or the structure change of the fan blade after the long-term operation of the air conditioner. At present, there is no good treatment method to deal with the electromagnetic noise generated by the vibration of the fan blade .

Contents of the invention

The problem solved by the invention is how to reduce the electromagnetic noise generated during the operation of the fan of the outdoor unit, so as to improve the production quality of the factory or solve the noise problem encountered by the user during the use of the air conditioner.

In order to solve the above problems, the present invention provides a noise processing method for an outdoor unit of an air conditioner, comprising:

Obtain the fan noise generated by the fan of the outdoor unit;

generating a fan noise spectrum based on the fan noise;

Obtaining the noise peak frequency f corresponding to the electromagnetic noise generated by the fan in the noise spectrum;

According to the noise decibel value corresponding to the noise peak frequency f, the weight increase mode of the fan blades of the fan is determined.

In this technical solution, after the noise of the fan in the outdoor unit of the air conditioner is obtained, the noise spectrum diagram is generated to collect the noise peak frequency f corresponding to the electromagnetic noise in the noise spectrum diagram, so as to process the noise , according to the noise decibel value to determine the method of increasing the weight of the blades of the fan, so that the operator can increase the weight of the blades according to the method of weight gain, thereby reducing the axial vibration of the blades and further reducing the noise generated by the fan. Electromagnetic noise.

Optionally, before the step of obtaining the noise peak frequency f corresponding to the electromagnetic noise of the motor in the noise spectrum, it also includes:

Judging in the fan noise spectrum, whether the noise corresponding to the noise peak frequency f is electromagnetic noise generated by the fan;

If the noise peak frequency f=(n±1)f _d , the noise corresponding to the noise peak frequency f is the electromagnetic noise generated by the fan, where n=1, 3, 5..., f _d is the grid power frequency.

In the technical solution, meaningless modification to the fan structure can be prevented, and the noise reduction effect of the fan blade after weight gain is not obvious, so that the noise can be dealt with in a more targeted manner.

Optionally, the determining the weight gain method of the blades of the fan according to the noise decibel value corresponding to the noise peak frequency f includes:

Obtain the noise decibel value corresponding to the noise peak frequency f, and obtain the total noise decibel value of the fan noise;

The noise decibel value is compared with the total noise decibel value, and the weight increase mode of the fan blades of the fan is determined according to the comparison.

In this technical solution, the noise decibel value is compared with the total noise decibel value, so as to judge the influence degree of electromagnetic noise in the overall noise of the fan according to the comparison. When the electromagnetic noise has a greater impact on the overall noise of the fan , it can be determined that the fan blade needs to be increased in weight, so that after the corresponding weight increase, it can achieve a better noise reduction effect. Based on this, the weight increase method of the fan blade of the fan can be more accurately determined , to deal with the noise in a more targeted manner.

Optionally, the step of comparing the noise decibel value with the total noise decibel value, and determining the weight gain method of the fan blades of the fan according to the comparison includes:

Calculate the ratio △ of the noise decibel value to the total noise decibel value;

When the ratio Δ is less than or equal to the first preset ratio, it is determined that the fan blade does not need to be increased in weight;

When the ratio Δ is greater than the first preset ratio, it is determined that the fan blade needs to be increased in weight.

In this technical solution, when the ratio △ is less than or equal to the first preset ratio, it means that the electromagnetic noise generated by the motor caused by the vibration of the fan blades has little influence on the overall noise of the fan. At this time, increasing the weight of the fan blades may reach There is no better noise reduction effect of noise treatment, so meaningless structural adjustments should be avoided to save production costs.

Optionally, after it is determined that the fan blade needs to be increased in weight, it also includes:

When the ratio △ is greater than the first preset ratio and the ratio △ is less than or equal to the second preset ratio, determine the weight increase method of increasing the first preset weight from the preset position of the fan blade;

When the ratio Δ is greater than the second preset ratio, and the ratio Δ is less than or equal to the third preset ratio, determine a weight increase method in which the preset position of the blade is increased by a second preset weight.

In this technical solution, according to the size of the ratio △, the weight gain of the fan blades is confirmed, so as to control the weight gain of the fan blades, and avoid the abnormal operation or drop of the air conditioner caused by the weight gain being too large or too small. The noise is not obvious.

Optionally, the first preset ratio is 80%, the second preset ratio is 90%, and the third preset ratio is 99%.

In this technical solution, under this ratio, the noise decibel value of the electromagnetic noise can be compared with the total value of the noise decibel. Based on the comparison, when the fan blades are increased in weight, a better noise reduction effect can be achieved. , and correspondingly avoid the increase in production debugging cost caused by meaningless weight gain. At the same time, when the ratio △ is in different ratio ranges, it corresponds to different weight gain weights, so as to achieve a better noise reduction effect and avoid Excessive weight gain leads to excessive weight of the fan blades, resulting in abnormal operation of the fan blades and the motor.

Optionally, the value range of the first preset weight is 0.5-4g, and the value range of the second preset weight is 2-5g.

In the technical solution, the weight gain of the blades is better controlled so as to control the noise reduction more accurately.

Optionally, the preset position is: on the wind blade, a position 15-45 mm away from the blade tip of the wind blade.

In this technical solution, the first preset weight or the second preset weight is added at a position close to the tip of the blade to improve the running stability of the blade, so as to better prevent the blade from shaking, thereby reducing the weight of the motor. Electromagnetic noise.

A noise treatment device for an outdoor unit of an air conditioner, comprising:

an acquisition unit, the acquisition unit is used to acquire the fan noise generated by the fan of the outdoor unit;

a noise analysis unit configured to generate a fan noise spectrum according to the fan noise;

The acquisition unit is also used to acquire the noise peak frequency f corresponding to the electromagnetic noise generated by the fan in the noise spectrum;

A control unit, the control unit is used to determine the weight increase mode of the fan blades of the fan according to the noise decibel value corresponding to the noise peak frequency f.

The noise processing device for the outdoor unit of the air conditioner of the present invention has the same advantages as the above noise processing method for the outdoor unit of the air conditioner relative to the prior art, and will not be repeated here.

A computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is read and executed by a processor, the above-mentioned method is realized.

Compared with the prior art, the computer-readable storage medium of the present invention has the same advantages as the above-mentioned noise processing method for an outdoor unit of an air conditioner, and will not be repeated here.

Description of drawings

Fig. 1 is the flow chart of the noise processing method of the outdoor unit of the air conditioner according to the embodiment of the present invention;

Fig. 2 is the 1/3 octave band noise spectrogram generated by the noise analysis equipment when the fan of an outdoor unit of an air conditioner according to an embodiment of the present invention is performing noise detection;

Fig. 3 is a schematic structural view of the wind blades after weight gain in the outdoor unit according to the embodiment of the present invention;

Fig. 4 is a structural block diagram of a noise treatment device for an outdoor unit of an air conditioner according to an embodiment of the present invention.

1- blade; 2- weight gain.

Detailed ways

In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

At the same time, it should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and not necessarily used to describe a specific order or sequence order. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein.

Referring to Figures 1-3, the present invention proposes a noise processing method for an outdoor unit of an air conditioner, including:

S1 obtains the fan noise generated by the fan of the outdoor unit;

S2 generates a fan noise spectrum according to the fan noise;

S3 acquires the noise peak frequency f corresponding to the electromagnetic noise generated by the fan in the noise spectrum;

S4 , according to the noise decibel value corresponding to the noise peak frequency f, determine the weight increase mode of the fan blades of the fan.

In the related technology, when the outdoor unit of the air conditioner is running and the fan is running, the blades shake along the axial direction of the motor shaft when the fan blades are running, which drives the motor shaft to move back and forth in the axial direction, resulting in continuous changes in the electromagnetic field of the motor. Electromagnetic noise, this situation is usually caused by the production defect of the fan blade during the production process of the outdoor unit of the air conditioner or the structure change of the fan blade after the long-term operation of the air conditioner.

Based on this, in the present invention, a noise processing method for the outdoor unit of an air conditioner is proposed, wherein the fan noise of the outdoor unit can be detected and acquired by a detection device such as a noise ball, and at the same time, a noise spectrum can be generated according to the fan noise Figure, referring to Figure 2, it is a 1/3 octave band noise spectrum diagram generated by a noise analysis device when the fan of an air conditioner outdoor unit is performing noise detection, where the abscissa is the frequency value, and the ordinate is the noise decibel value, so that the noise peak frequency f corresponding to the electromagnetic noise generated by the fan in the noise spectrum is collected according to the noise spectrum diagram, wherein the frequency 100Hz corresponds to the noise peak frequency f corresponding to the electromagnetic noise generated by the fan, where The decibel value corresponding to 100Hz, 39.7dB, is the noise decibel value before the noise processing of the outdoor unit of the air conditioner. In this way, after collecting and acquiring the noise of the fan in the outdoor unit of the air conditioner, the noise spectrum diagram can be generated to obtain The noise peak frequency f corresponding to the electromagnetic noise described in the noise spectrum diagram, so that when the noise is processed, the weight gain method of the fan blades of the fan can be determined according to the noise decibel value, so that the operator can adjust the weight according to the weight gain method The fan blades are increased in weight, so as to reduce the axial vibration of the fan blades, thereby reducing the electromagnetic noise generated by the fan.

Wherein, according to the noise decibel value corresponding to the noise peak frequency f, when determining the weight gain mode of the fan blade of the fan, the corresponding weight gain mode can be determined by the noise decibel value, such as when the noise decibel value is small , you can issue a method that does not need to increase the weight. When the noise decibel value is average, determine the weight increase method of the corresponding general weight. The weight of the blade to prevent the blade from shaking.

Referring to Figure 2, the noise peak frequency f of 100Hz is weighted on the fan blades to process the noise and the re-detected noise decibel is 8.3dB, so that the electromagnetic noise of the fan in the outdoor unit is reduced by 31.4dB. At the same time, the noise The decibel value corresponding to the peak frequency f.

Before the step of obtaining the noise peak frequency f corresponding to the electromagnetic noise of the motor in the noise spectrum, it also includes:

Judging in the fan noise spectrum, whether the noise corresponding to the noise peak frequency f is electromagnetic noise generated by the fan;

If the noise peak frequency f=(n±1)f _d , the noise corresponding to the noise peak frequency f is the electromagnetic noise generated by the fan, where n=1, 3, 5..., f _d is the grid power frequency.

Wherein, it should be noted that the electromagnetic noise referred to in the present invention refers to the electromagnetic noise generated by the motor due to the shaking of the fan blades when the fan is running.

In related technologies, when generating the noise spectrum of motor noise, the noise corresponding to the noise peak in the noise spectrum may not be the electromagnetic noise caused by the vibration of the fan blades referred to in the present invention, such as the noise generated by motor resonance or the motor itself Electromagnetic noise may also produce a noise peak with a large noise decibel value. In this case, increasing the weight of the fan blade may not have a good effect on reducing electromagnetic noise.

Based on this, in the present invention, the noise peak frequency f is identified and judged to determine whether the noise corresponding to the noise peak frequency f is the vibration of the fan blade in the present invention, which causes the electromagnetic noise generated by the motor. During the vibration of the fan blade, Because the vibration of the fan blade drives the axial movement of the motor shaft, the frequency of the noise in the electromagnetic noise produced by the motor is an even multiple of the frequency of the grid power supply. Based on this, in the present invention, the specific judgment method is the peak frequency of the noise f=( n±1)f _d , then the noise corresponding to the noise peak frequency f is the electromagnetic noise generated by the fan. By comparing the noise peak frequency f in the noise spectrogram with the grid power frequency, it can be more accurately identified whether it is The electromagnetic noise generated by the motor caused by the vibration of the fan blades. In this way, when the noise corresponding to the peak frequency f of the noise is the electromagnetic noise generated by the motor caused by the vibration of the fan blades, the peak frequency f of the noise is collected, so that it can be more accurately based on The noise peak frequency f and its corresponding noise decibel value determine the way of increasing the weight of the fan blades of the fan, thereby preventing meaningless modification of the fan structure, thereby preventing the noise reduction effect of the fan blades after weight gain from being insignificant, To deal with the noise in a more targeted manner.

In an optional embodiment of the present invention, the determining the weight gain method of the fan blades of the fan according to the noise decibel value corresponding to the noise peak frequency f includes:

Obtain the noise decibel value corresponding to the noise peak frequency f, and obtain the total noise decibel value of the fan noise;

The noise decibel value is compared with the total noise decibel value, and the weight increase mode of the fan blades of the fan is determined according to the comparison.

In this embodiment, according to the noise decibel value corresponding to the noise peak frequency f, determining the weight gain method of the blades of the fan is specifically, while obtaining the fan noise, detecting and obtaining the overall decibel value of the fan noise, that is, the Described noise decibel total value, simultaneously according to described noise spectrogram, obtains the noise decibel value corresponding to described noise peak frequency f, based on this, noise decibel value and noise decibel total value are compared, with this according to contrasting situation, judge In the overall noise of the fan, the degree of influence of electromagnetic noise, when the electromagnetic noise has a greater impact on the overall noise of the fan, it can be determined that the fan blade needs to be increased in weight, so that after the corresponding increase in weight, it can play a role Better noise reduction effect, based on this, it is possible to more accurately determine the way of increasing the weight of the fan blades of the fan, so as to deal with the noise in a more targeted manner.

In an optional embodiment of the present invention, the step of comparing the noise decibel value with the total noise decibel value, and determining the weight gain method of the blades of the fan according to the comparison includes:

Calculate the ratio △ of the noise decibel value to the total noise decibel value;

When the ratio Δ is less than or equal to the first preset ratio, it is determined that the fan blade does not need to be increased in weight;

When the ratio Δ is greater than the first preset ratio, it is determined that the fan blade needs to be increased in weight.

In this embodiment, the comparison between the total noise decibel value and the noise decibel value is specifically to calculate the ratio △ of the noise decibel value to the total noise decibel value, and the ratio △ is expressed in the form of a percentage. When comparing, specifically set a first Compared with the preset ratio, when the ratio △ is less than or equal to the first preset ratio, it means that the electromagnetic noise generated by the motor caused by the vibration of the fan blade has little influence on the overall noise of the fan. At this time, the weight increase of the fan blade may reach There is no good noise reduction effect of noise treatment, so as to avoid meaningless structural adjustments and save production costs. Correspondingly, when the ratio △ is greater than the first preset ratio, it means that the vibration of the fan blades at this time causes the motor to generate noise. Electromagnetic noise has a great impact on the overall noise of the fan. At this time, increasing the weight of the fan blades may have a better noise reduction effect. Based on this, the specific method of increasing the weight of the fan blades of the fan can be determined later. The operator can increase the weight of the fan blade structure, so as to deal with the noise, so as to reduce the electromagnetic noise of the fan, thereby reducing the noise of the fan.

Wherein the selection of the first preset ratio can be set according to actual production or user experience. In this embodiment, the selection of the first preset ratio is 80%. Under this ratio, the noise of electromagnetic noise can be more reasonably The decibel value is compared with the total noise decibel value. Based on the comparison, when the fan blade is increased in weight, it can achieve a better noise reduction effect, and correspondingly avoid the increase in production and debugging costs caused by meaningless weight gain.

In an optional embodiment of the present invention, after it is determined that the fan blade needs to be increased in weight, it also includes:

When the ratio △ is greater than the first preset ratio and the ratio △ is less than or equal to the second preset ratio, determine the weight increase method of increasing the first preset weight from the preset position of the fan blade;

When the ratio Δ is greater than the second preset ratio, and the ratio Δ is less than or equal to the third preset ratio, determine a weight increase method in which the preset position of the blade is increased by a second preset weight.

In the above embodiment, when the ratio Δ is greater than the first preset ratio, it is determined that the fan blade needs to be increased in weight, and in the process of increasing the weight of the fan blade, different weight increases may affect the weight of the fan blade. In actual operation, for example, when the weight gain is small, it may not be able to prevent the vibration of the fan blades, and it will not be able to reduce the electromagnetic noise well, so that the ratio △ is adjusted to be less than the first preset ratio, and the corresponding , if the weight of the fan blade is increased, the weight gain will be relatively large. Although the larger weight gain can basically meet the stability of the fan blade operation, when the fan blade is running, the excessive weight of the fan blade may cause the motor to The operation of the air conditioner is abnormal, which eventually leads to abnormal operation of the air conditioner.

Based on this, in this embodiment, after determining that the fan blade needs to be increased in weight, it also includes judging the ratio range of the ratio Δ, wherein, when the ratio Δ is greater than the first preset ratio, and the When the ratio △ is less than or equal to the second preset ratio, determine the method of increasing the weight of the first preset weight from the preset position of the fan blade, so that when the ratio △ is within the range of the ratio, the increased weight The weight size corresponds to the ratio △.

Wherein the selection of the second preset ratio is measured according to actual simulation. In this embodiment, the selection of the second preset ratio is 90%, and the selection of the third preset ratio is 99%. When the ratio is within the range, it corresponds to different weight gain, so as to achieve a better noise reduction effect, and avoid excessive weight gain resulting in excessive weight of the fan blades, resulting in abnormal operation of the fan blades and the motor.

In an optional embodiment of the present invention, the value range of the first preset weight is 0.5-4g, and the value range of the second preset weight is 2-5g, wherein the first preset weight The preferred value range of the second preset weight is 1.5-2.5g, and the preferred value range of the second preset weight is 3-4g, so as to better control the weight gain of the blades and control the noise reduction more accurately .

In an optional embodiment of the present invention, the preset position is: on the blade, a position 15-45mm away from the blade tip of the blade, as shown in FIG. 3 , where the blade Each blade 1 is provided with a counterweight, and the distance between the corresponding preset position and the tip of each blade 1 is a, and the value range can be selected as 15-45mm, preferably 25-30mm. The tip is the free part of the fan blade. After long-term operation, the deformation of the fan blade or the vibration of the blade 1 usually starts from the tip of the blade. Based on this, the first preset weight or The second preset weight is used to improve the running stability of the blade 1, so as to better prevent the blade 1 from vibrating, thereby reducing the electromagnetic noise of the motor.

Wherein, a weight-increasing object 2 such as a counterweight clip or a counterweight block can be set at a preset position to increase the weight of the fan blade.

Referring to Fig. 4, a noise treatment device for an outdoor unit of an air conditioner includes:

an acquisition unit, the acquisition unit is used to acquire the fan noise generated by the fan of the outdoor unit;

a noise analysis unit configured to generate a fan noise spectrum according to the fan noise;

The acquiring unit is also used to acquire the noise peak frequency f corresponding to the electromagnetic noise generated by the fan in the noise spectrum;

A control unit, the control unit is used to determine the weight increase mode of the fan blades of the fan according to the noise decibel value corresponding to the noise peak frequency f.

The noise processing device of the outdoor unit of the air conditioner according to the present invention, after collecting and acquiring the noise of the fan in the outdoor unit of the air conditioner, generates a noise spectrum diagram, thereby being able to collect the noise peak frequency corresponding to the electromagnetic noise in the noise spectrum diagram f, when dealing with the noise, the method of increasing the weight of the blades of the fan is determined according to the noise decibel value, so that the operator can increase the weight of the blades according to the method of increasing the weight, thereby reducing the weight of the blades Axial vibration, thereby reducing the electromagnetic noise generated by the fan.

The present invention also proposes a computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is read and run by a processor, the above-mentioned method is implemented to achieve the embodiment of the present invention Each beneficial effect in.

Wherein, the storage medium includes: a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk, and other media capable of storing program codes.

Although the present invention is disclosed above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so the protection scope of the present invention should be based on the scope defined in the claims.

Claims (10)

1. A noise processing method for an air conditioner outdoor unit, characterized in that it comprises: Obtain the fan noise generated by the fan of the outdoor unit; generating a fan noise spectrum based on the fan noise; Obtaining the noise peak frequency f corresponding to the electromagnetic noise generated by the fan in the noise spectrum; According to the noise decibel value corresponding to the noise peak frequency f, the weight increase mode of the fan blades of the fan is determined. 2. The noise processing method of the outdoor unit of an air conditioner according to claim 1, wherein, before the step of obtaining the noise peak frequency f corresponding to the electromagnetic noise of the motor in the noise spectrum, it also includes: Judging in the fan noise spectrum, whether the noise corresponding to the noise peak frequency f is electromagnetic noise generated by the fan; If the noise peak frequency f=(n±1)f _d , the noise corresponding to the noise peak frequency f is the electromagnetic noise generated by the fan, where n=1, 3, 5..., f _d is the grid power frequency. 3. The noise processing method of the outdoor unit of an air conditioner according to claim 1, wherein the method of determining the weight gain of the blades of the fan according to the noise decibel value corresponding to the peak noise frequency f includes: Obtain the noise decibel value corresponding to the noise peak frequency f, and obtain the total noise decibel value of the fan noise; The noise decibel value is compared with the total noise decibel value, and the weight increase mode of the fan blades of the fan is determined according to the comparison. 4. The noise processing method of an outdoor unit of an air conditioner according to claim 3, wherein the noise decibel value is compared with the total noise decibel value, and the fan blade of the fan is determined according to the comparison. The weight gain method steps include: Calculate the ratio △ of the noise decibel value to the total noise decibel value; When the ratio Δ is less than or equal to the first preset ratio, it is determined that the fan blade does not need to be increased in weight; When the ratio Δ is greater than the first preset ratio, it is determined that the fan blade needs to be increased in weight. 5. The noise processing method for the outdoor unit of an air conditioner according to claim 4, characterized in that, after determining that the fan blades need to be increased in weight, further comprising: When the ratio △ is greater than the first preset ratio and the ratio △ is less than or equal to the second preset ratio, determine the weight increase method of increasing the first preset weight from the preset position of the fan blade; When the ratio Δ is greater than the second preset ratio, and the ratio Δ is less than or equal to the third preset ratio, determine a weight increase method in which the preset position of the blade is increased by a second preset weight. 6. The noise processing method for the outdoor unit of an air conditioner according to claim 5, wherein the first preset ratio is 80%, the second preset ratio is 90%, and the third preset ratio is 90%. The ratio is 99%. 7. The noise treatment method of an outdoor unit of an air conditioner according to claim 5, wherein the value range of the first preset weight is 0.5-4g, and the value range of the second preset weight is 2-5g. 8 . The noise treatment method for an outdoor unit of an air conditioner according to claim 5 , wherein the preset position is: on the fan blade, a position 15-45 mm away from the blade tip of the fan blade. 9 . 9. A noise treatment device for an outdoor unit of an air conditioner, comprising: an acquisition unit, the acquisition unit is used to acquire the fan noise generated by the fan of the outdoor unit; a noise analysis unit configured to generate a fan noise spectrum according to the fan noise; The acquiring unit is also used to acquire the noise peak frequency f corresponding to the electromagnetic noise generated by the fan in the noise spectrum; A control unit, the control unit is used to determine the weight increase mode of the fan blades of the fan according to the noise decibel value corresponding to the noise peak frequency f. 10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program, and when the computer program is read and run by a processor, the computer program according to any one of claims 1-8 is implemented. described method.