CN110440346A - A kind of noise processing method and device of air-conditioner outdoor unit - Google Patents
A kind of noise processing method and device of air-conditioner outdoor unit Download PDFInfo
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- CN110440346A CN110440346A CN201910782278.1A CN201910782278A CN110440346A CN 110440346 A CN110440346 A CN 110440346A CN 201910782278 A CN201910782278 A CN 201910782278A CN 110440346 A CN110440346 A CN 110440346A
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- noise
- fan blade
- blower
- fan
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/40—Vibration or noise prevention at outdoor units
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
Abstract
The present invention provides a kind of noise processing method of air-conditioner outdoor unit and device, the noise processing method of the air-conditioner outdoor unit includes: the fan noise for obtaining outdoor unit blower and generating；Fan noise frequency spectrum is generated according to fan noise；Acquire the corresponding noise peak frequency f of electromagnetic noise that blower generates in noise spectrum；According to the corresponding noise decibel value of noise peak frequency f, the weight gain mode of the fan blade of blower is determined.Beneficial effects of the present invention: after the noise gathering of blower obtains in air-conditioner outdoor unit, by generating noise pattern, so as to acquire the corresponding noise peak frequency f of electromagnetic noise in noise pattern, with this when handling noise, the weight gain mode of the fan blade of blower is determined according to noise decibel value, by this operator can according to weight gain in a manner of increase weight to fan blade, to reduce the axial shake of fan blade, and then reduce the electromagnetic noise that blower generates.
Description
Technical field
The present invention relates to technical field of noise treatment, in particular to a kind of noise treatment side of air-conditioner outdoor unit
Method and device.
Background technique
With popularizing for air conditioner, air conditioner noises complain problem also more and more prominent.Therefore, how fast accurate identification is made an uproar
Source of sound, and noise problem is effectively solved rapidly, it has also become one of the hot spot of each Air-conditioning Enterprise research.
When air-conditioner outdoor unit is run, during fan operation, blade is generated along motor shaft axial direction when due to fan blade operation
Shake, and drive the axial play back and forth of motor shaft, constantly changing so as to cause Electromagnetic Field causes electromagnetic noise, this
Kind situation is usually by the production defect of fan blade in air-conditioner outdoor unit production process or after the permanent operation of air conditioner, fan blade
Structure change causes, currently, the electromagnetic noise for being temporarily capable of handling the shake of fan blade without preferable processing mode and generating.
Summary of the invention
Problems solved by the invention is the electromagnetic noise for how reducing outdoor unit fan operation and generating in the process, to promote work
The quality of production of factory solves the noise problem that user encounters in air conditioner use process.
To solve the above problems, the present invention provides a kind of noise processing method of air-conditioner outdoor unit, comprising:
Obtain the fan noise that outdoor unit blower generates；
Fan noise frequency spectrum is generated according to the fan noise；
Obtain the corresponding noise peak frequency f of electromagnetic noise of the generation of blower described in the noise spectrum；
According to the corresponding noise decibel value of the noise peak frequency f, the weight gain mode of the fan blade of the blower is determined.
In the technical scheme, after the noise of blower obtains in air-conditioner outdoor unit, by generating noise pattern,
So as to acquire the corresponding noise peak frequency f of electromagnetic noise described in noise pattern, handled with this to noise
When, the weight gain mode of the fan blade of the blower is determined according to noise decibel value, by this operator can according to weight gain in a manner of to institute
It states fan blade to increase weight, to reduce the axial shake of fan blade, and then reduces the electromagnetic noise that blower generates.
Optionally, it is described obtain in the noise spectrum the corresponding noise peak frequency f step of motor electromagnetic noise it
Before, further includes:
Judge in fan noise frequency spectrum, whether the corresponding noise of noise peak frequency f is that the electromagnetism that the blower generates is made an uproar
Sound；
If noise peak frequency f=(n ± 1) fd, then the corresponding noise of noise peak frequency f is blower production
Raw electromagnetic noise, wherein n=1,3,5 ..., fdFor electric network source frequency.
It in the technical program, can prevent to the meaningless modification of blower fan structure, and then the fan blade after weight gain can be prevented
Noise reduction effect is unobvious, is handled with more targeted noise.
Optionally, described according to the corresponding noise decibel value of the noise peak frequency f, determine the fan blade of the blower
Weight gain mode includes:
The corresponding noise decibel value of the noise peak frequency f is obtained, and obtains the noise decibel of the fan noise
Total value；
The noise decibel value and the noise decibel total value are compared, the blower is determined according to comparative situation
The weight gain mode of fan blade.
In the technical scheme, noise decibel value and noise decibel total value are compared, with this according to comparative situation, is sentenced
Break in the overall noise of blower, the influence degree of electromagnetic noise, when entire effect of the electromagnetic noise to fan noise is larger,
It can determine that the fan blade increases weight, can play preferable noise reduction effect after corresponding increased weight with this, be based on
This, can more accurately be determined the weight gain mode of the fan blade of the blower, be handled with more targeted noise.
Optionally, described to compare the noise decibel value and the noise decibel total value, it is true according to comparative situation
The weight gain mode step of the fan blade of the blower includes: calmly
Calculate the ratio △ of the noise decibel value Yu noise decibel total value；
When ratio △ is less than or equal to the first default ratio, determine that the fan blade does not need to increase weight；
When ratio △ is greater than the first default ratio, determine that the fan blade increases weight.
In the technical scheme, when ratio △ is less than or equal to the first default ratio, indicate that fan blade is shaken and led at this time
The electromagnetic noise for sending a telegraph machine generation is smaller to fan noise entire effect, and increasing weight at this time to fan blade, it is preferable to be not achieved
Noise treatment noise reduction effect should be avoided meaningless structural adjustment with this, save production cost.
Optionally, after determining that the fan blade is increased weight, further includes:
When the ratio △ is greater than the first default ratio, and the ratio △ is less than or equal to the second default ratio, really
The predeterminated position of the fixed fan blade increases the weight gain mode of the first preset weight；
When the ratio △ is greater than the second default ratio, and the ratio △ presets ratio less than or equal to third, really
The predeterminated position of the fixed fan blade increases the weight gain mode of the second preset weight.
In the technical scheme, according to the size of ratio △, confirmed in a manner of the weight gain to fan blade, thus to fan blade
Weight gain controlled, avoid weight gain weight it is excessive or it is too small caused by operation of air conditioner exception or noise reduction it is unobvious.
Optionally, the described first default ratio is 80%, and the second default ratio is 90%, and the third presets ratio
It is 99%.
In the technical scheme, under the ratio, can more reasonably the noise decibel value to electromagnetic noise and noise divide
Shellfish total value compares, and can reach preferable noise reduction effect when increasing weight to fan blade based on comparative situation, corresponding also to keep away
Exempt from scheduling and planning cost caused by meaningless weight gain raising, meanwhile, when ratio △ is in different ratio ranges from it is different
Weight gain weight is corresponded to, and can play preferable noise reduction effect, and weight gain is avoided excessively to cause the weight of fan blade excessive,
And it is abnormal to cause fan blade and motor to operate.
Optionally, the value range of first preset weight is 0.5-4g, the value range of second preset weight
For 2-5g.
In the technical program, the weight gain of blade is preferably controlled, more accurately to control noise reduction.
Optionally, the predeterminated position are as follows: on the fan blade, the position of the blade tip 15-45mm apart from the fan blade.
In the technical program, increase the first preset weight or the second default weight in the closer position of blade tip close to fan blade
Amount, to improve the operation stability of blade, preferably can prevent blade from shaking, to reduce motor electromagnetic noise with this.
A kind of noise treatment device of air-conditioner outdoor unit, comprising:
Acquiring unit, the acquiring unit are used to obtain the fan noise of outdoor unit blower generation；
Noise analysis unit, the noise analysis unit are used to generate fan noise frequency spectrum according to the fan noise；
The acquiring unit is also used to acquire the corresponding noise of electromagnetic noise of the generation of blower described in the noise spectrum
Crest frequency f；
Control unit, described control unit are used to determine institute according to the corresponding noise decibel value of the noise peak frequency f
State the weight gain mode of the fan blade of blower.
The noise processing method phase of the noise treatment device of air-conditioner outdoor unit of the invention and above-mentioned air-conditioner outdoor unit
Identical for advantage possessed by the prior art, details are not described herein.
A kind of computer readable storage medium, the computer-readable recording medium storage have computer program, the meter
When calculation machine program is read out by the processor and runs, method described above is realized.
The noise processing method of computer readable storage medium of the invention and above-mentioned air-conditioner outdoor unit is relative to existing
Advantage possessed by technology is identical, and details are not described herein.
Detailed description of the invention
Fig. 1 is the noise processing method flow chart of air-conditioner outdoor unit described in the embodiment of the present invention；
Fig. 2 is that the blower of a certain air-conditioner outdoor unit described in the embodiment of the present invention passes through noise when carrying out noise measuring
The noise pattern for the third-octave that analytical equipment generates；
Fig. 3 is the structural schematic diagram of the fan blade after being increased weight in outdoor unit described in the embodiment of the present invention；
Fig. 4 is the structural block diagram of the noise treatment device of air-conditioner outdoor unit described in the embodiment of the present invention.
1- blade；2- weight gain object.
Specific embodiment
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
Simultaneously, it is to be noted that, description and claims of this specification and term " first " in above-mentioned attached drawing,
" second " etc. is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that in this way
The data used are interchangeable under appropriate circumstances, so that the embodiment of the present invention described herein can be in addition to scheming herein
Sequence other than those of showing or describe is implemented.
Referring to Fig.1 shown in -3, the invention proposes a kind of noise processing methods of air-conditioner outdoor unit, comprising:
S1 obtains the fan noise that outdoor unit blower generates；
S2 generates fan noise frequency spectrum according to the fan noise；
S3 obtains the corresponding noise peak frequency f of electromagnetic noise of the generation of blower described in the noise spectrum；
S4 determines the weight gain mode of the fan blade of the blower according to the corresponding noise decibel value of the noise peak frequency f.
In the related art, when air-conditioner outdoor unit is run, during fan operation, blade is generated when due to fan blade operation
Along the shake of motor shaft axial direction, and the axial play back and forth of motor shaft is driven, constantly changes and draw so as to cause Electromagnetic Field
Electromagnetic noise is played, such case is usually by the production defect of fan blade in air-conditioner outdoor unit production process or in the length of air conditioner
Long after operation, blade structure variation causes.
Based on this, in the present invention, a kind of noise processing method of air-conditioner outdoor unit is proposed, wherein can be by making an uproar
The fan noise of outdoor unit is carried out detection acquisition by the detection devices such as sound ball, meanwhile, noise frequency is produced according to the fan noise
Spectrogram is that the blower of a certain air-conditioner outdoor unit generated when noise measuring by noise analysis equipment referring to Fig. 2
The noise pattern of third-octave, wherein abscissa is frequency values, and ordinate is the decibel value of noise, with this, according to the noise
Spectrogram acquires the corresponding noise peak frequency f of electromagnetic noise of the generation of blower described in the noise spectrum, wherein frequency
100Hz is corresponding to generate noise peak frequency f corresponding to electromagnetic noise for blower, wherein the corresponding decibel value of 100Hz
39.7dB is the noise decibel value before the noise treatment to the air-conditioner outdoor unit, with this, to air-conditioner outdoor unit apoplexy
After the noise gathering of machine obtains, by generating noise pattern, so as to obtain electromagnetic noise pair described in noise pattern
The noise peak frequency f answered determines the increasing of the fan blade of the blower according to noise decibel value with this when handling noise
Double recipe formula, by this operator can according to weight gain in a manner of increase weight to the fan blade, to reduce the axial shake of fan blade, into
And reduce the electromagnetic noise of blower generation.
Wherein, according to the corresponding noise decibel value of the noise peak frequency f, the weight gain side of the fan blade of the blower is determined
When formula, it can determine that corresponding weight gain mode can be assigned such as when noise decibel value is smaller by the size of noise decibel value
The mode to increase weight is not needed, when noise decibel value is general, the weight gain mode for the general weight answered is determined, when noise decibel
When being worth larger, greater weight weight gain mode is assigned, larger to improve the weight of fan blade, to prevent fan blade from shaking.
Referring in Fig. 2, the noise peak frequency f of 100Hz increases weight in fan blade, examined after handling noise again
The noise decibel measured is 8.3dB, so that the electromagnetic noise of blower has dropped the noise peak simultaneously 31.4dB in outdoor unit
It is worth the corresponding decibel value of frequency f.
In the acquisition noise spectrum before the corresponding noise peak frequency f step of motor electromagnetic noise, also wrap
It includes:
Judge in fan noise frequency spectrum, whether the corresponding noise of noise peak frequency f is that the electromagnetism that the blower generates is made an uproar
Sound；
If noise peak frequency f=(n ± 1) fd, then the corresponding noise of noise peak frequency f is blower production
Raw electromagnetic noise, wherein n=1,3,5 ..., fdFor electric network source frequency.
Wherein, it should be noted that the signified electromagnetic noise of the present invention is and to lead in fan operation since fan blade is shaken
Send a telegraph the electromagnetic noise of machine generation.
In the related art, when generating the noise spectrum of motor noise, noise peak in noise spectrum is corresponding to make an uproar
Sound may be not for electromagnetic noise caused by fan blade shake signified in the present invention, the noise or motor generated such as motor resonance
The electromagnetic noise of itself, it is also possible to the biggish noise peak of noise decibel value is generated, in this case to raising fan blade
Weight may can not play the effect for reducing electromagnetic noise well.
Based on this, in the present invention, noise peak frequency f carries out identification judgement, to determine that the noise peak frequency f is corresponding
Noise whether be in the present invention fan blade shake, and cause motor generate electromagnetic noise, fan blade shake during, due to
Fan blade shake drives the axial float of motor shaft, and the frequency of noise is the idol of electric network source frequency in the electromagnetic noise that motor generates
Several times are based on this, and in the present invention, specific judgment mode is noise peak frequency f=(n ± 1) fd, then the noise peak
The corresponding noise of frequency f is the electromagnetic noise that the blower generates, by by noise peak frequency f and power grid in noise pattern
Supply frequency compares, so as to more accurately identify whether to shake the electromagnetic noise for causing motor to generate for fan blade, with
This, when the corresponding noise of noise peak frequency f is the electromagnetic noise that fan blade shake causes motor to generate, to the noise peak
Frequency f is acquired acquisition, so as to more accurately foundation noise peak frequency f and its corresponding noise decibel value, really
The weight gain mode of the fan blade of the fixed blower, so as to prevent to the meaningless modification of blower fan structure, and then can prevent from increasing
Fan blade noise reduction effect after weight is unobvious, is handled with more targeted noise.
It is described according to the corresponding noise decibel of the noise peak frequency f in of the invention one optionally embodiment
Value, determines that the weight gain mode of the fan blade of the blower includes:
The corresponding noise decibel value of the noise peak frequency f is obtained, and obtains the noise decibel of the fan noise
Total value；
The noise decibel value and the noise decibel total value are compared, the blower is determined according to comparative situation
The weight gain mode of fan blade.
In the present embodiment, according to the corresponding noise decibel value of noise peak frequency f, the increasing of the fan blade of the blower is determined
For double recipe formula specifically, while obtaining fan noise, detection obtains the whole decibel value of the fan noise, i.e., the described noise point
Shellfish total value, while according to the noise pattern, noise decibel value corresponding to the noise peak frequency f is obtained, this is based on,
Noise decibel value and noise decibel total value are compared, with this according to comparative situation, judged in the overall noise of blower, electricity
The influence degree of magnetic noise sound can determine that the fan blade needs to carry out when entire effect of the electromagnetic noise to fan noise is larger
Weight gain can play preferable noise reduction effect after corresponding increased weight with this, be based on this, can more accurately determine described in
The weight gain mode of the fan blade of blower, is handled noise with more targeted.
In of the invention one optionally embodiment, it is described by the noise decibel value and the noise decibel total value into
Row comparison, the weight gain mode step for determining the fan blade of the blower according to comparative situation include:
Calculate the ratio △ of the noise decibel value Yu noise decibel total value；
When ratio △ is less than or equal to the first default ratio, determine that the fan blade does not need to increase weight；
When ratio △ is greater than the first default ratio, determine that the fan blade increases weight.
In the present embodiment, noise decibel total value and noise decibel value are compared specifically, calculating noise decibel value
It is embodied with the ratio △ of noise decibel total value, ratio △ with percents, in comparison, the default ratio of specific setting one first
Value compares, and when ratio △ is less than or equal to the first default ratio, indicates that fan blade is shaken and motor is caused to generate at this time
Electromagnetic noise is smaller to fan noise entire effect, and preferable noise treatment noise abatement may be not achieved at this time by increasing weight to fan blade
Meaningless structural adjustment should be avoided with this in effect, saves production cost, corresponding, when ratio △ is greater than the first default ratio
When, the electromagnetic noise for indicating that fan blade is shaken and motor is caused to generate at this time is larger to fan noise entire effect, at this time to fan blade
Preferable noise reduction effect may be played by carrying out weight gain, be based on this, the subsequent increasing that can determine the specifically fan blade to the blower
Double recipe formula can be increased weight blade structure with this operator, to handle noise, to reduce the electromagnetism of blower
Noise, to reduce fan noise.
Wherein the selection of the first default ratio can be set according to actual production or user experience, in the present embodiment, the
One default ratio is selected as 80%, under the ratio, can more reasonably the noise decibel value to electromagnetic noise and noise divide
Shellfish total value compares, and can reach preferable noise reduction effect when increasing weight to fan blade based on comparative situation, corresponding also to keep away
Exempt from the raising of scheduling and planning cost caused by meaningless weight gain.
In of the invention one optionally embodiment, after determining that the fan blade is increased weight, further includes:
When the ratio △ is greater than the first default ratio, and the ratio △ is less than or equal to the second default ratio, really
The predeterminated position of the fixed fan blade increases the weight gain mode of the first preset weight；
When the ratio △ is greater than the second default ratio, and the ratio △ presets ratio less than or equal to third, really
The predeterminated position of the fixed fan blade increases the weight gain mode of the second preset weight.
In the above-described embodiments, when ratio △ is greater than the first default ratio, determine that the fan blade increases weight, and
During increasing weight to fan blade, the increase of different weight may will affect the actual motion of fan blade, such as weight gain compared with
Hour, the effect for preventing fan blade from shaking may can not be played, and then electromagnetic noise can not also be made to carry out preferable noise reduction, so that
Ratio △ is adjusted to less than the first default ratio, and corresponding, if increase weight to fan blade, weight gain is larger, although biggish increasing
It can basically meet the stability of fan blade operation again, but in fan blade operating, may be led since the weight of fan blade is excessive
The operating for sending a telegraph machine generates exception, and eventually leads to air conditioner operating and generate exception.
It further include to the ratio △ institute after determining that the fan blade is increased weight in the present embodiment based on this
The ratio range at place is judged, wherein when ratio △ be greater than the first default ratio, and the ratio △ be less than or equal to second
When default ratio, determine that the predeterminated position of the fan blade increases the weight gain mode of the first preset weight, to exist in the ratio △
When in the ratio range, the weight size of weight gain is carried out with ratio △ corresponding.
Wherein the selection of the second default ratio is measured according to realistic simulation, and the second default ratio is selected as in the present embodiment
90%, third presets ratio and is selected as 99%, with this when the ratio △ is in different ratio ranges from different increasings
Heavy amount is corresponded to, and can play preferable noise reduction effect, and weight gain is avoided excessively to cause the weight of fan blade excessive, and
Fan blade and motor is caused to operate abnormal.
In of the invention one optionally embodiment, the value range of first preset weight is 0.5-4g, described
The value range of second preset weight is 2-5g, wherein the value range of the first preset weight is preferably 1.5-2.5g, second
The value range of preset weight is preferably 3-4g, is preferably controlled with this weight gain of blade, more accurately to control
Noise reduction processed.
In of the invention one optionally embodiment, the predeterminated position are as follows: on the fan blade, apart from the fan blade
Blade tip 15-45mm position, referring to shown in Fig. 3, wherein counterweight is arranged on each blade 1 of fan blade, corresponding default position
It sets and is divided into a between each 1 blade tip of blade, value range may be selected to be 15-45mm, preferably 25-30mm, in usual situation
The blade tip of lower fan blade is the freedom portion of fan blade, and after permanent operation, the deformation of fan blade or the shake of blade 1 are usually from blade tip
Start, be based on this, increases the first preset weight or the second preset weight in the closer position of blade tip close to fan blade, to improve leaf
The operation stability of piece 1 can preferably prevent blade 1 from shaking, to reduce motor electromagnetic noise with this.
The weight gain object 2 such as counterweight clip or clump weight wherein can be set to increase weight to fan blade in predeterminated position.
Referring to shown in Fig. 4, a kind of noise treatment device of air-conditioner outdoor unit, comprising:
Acquiring unit, the acquiring unit are used to obtain the fan noise of outdoor unit blower generation；
Noise analysis unit, the noise analysis unit are used to generate fan noise frequency spectrum according to the fan noise；
The acquiring unit is also used to obtain the corresponding noise of electromagnetic noise of the generation of blower described in the noise spectrum
Crest frequency f；
Control unit, described control unit are used to determine institute according to the corresponding noise decibel value of the noise peak frequency f
State the weight gain mode of the fan blade of blower.
The noise treatment device of air-conditioner outdoor unit of the present invention, the noise of blower is adopted in air-conditioner outdoor unit
After collection obtains, by generating noise pattern, so as to acquire the corresponding noise peak of electromagnetic noise described in noise pattern
Value frequency f determines the weight gain mode of the fan blade of the blower according to noise decibel value with this when handling noise, with
This operator can increase weight to the fan blade according to weight gain mode, to reduce the axial shake of fan blade, and then reduce wind
The electromagnetic noise that machine generates.
The invention also provides a kind of computer readable storage medium, the computer-readable recording medium storage has calculating
Machine program when the computer program is read out by the processor and runs, realizes such as above-mentioned method, to reach the embodiment of the present invention
In each beneficial effect.
Wherein, storage medium includes: USB flash disk, mobile hard disk, read-only memory, random access memory, magnetic or disk
Etc. the various media that can store program code.
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (10)
1. a kind of noise processing method of air-conditioner outdoor unit characterized by comprising
Obtain the fan noise that outdoor unit blower generates；
Fan noise frequency spectrum is generated according to the fan noise；
Obtain the corresponding noise peak frequency f of electromagnetic noise of the generation of blower described in the noise spectrum；
According to the corresponding noise decibel value of the noise peak frequency f, the weight gain mode of the fan blade of the blower is determined.
2. the noise processing method of air-conditioner outdoor unit according to claim 1, which is characterized in that described in the acquisition
In noise spectrum before the corresponding noise peak frequency f step of motor electromagnetic noise, further includes:
Judge in fan noise frequency spectrum, whether the corresponding noise of noise peak frequency f is electromagnetic noise that the blower generates；
If noise peak frequency f=(n ± 1) fd, then the corresponding noise of noise peak frequency f is what the blower generated
Electromagnetic noise, wherein n=1,3,5 ..., fdFor electric network source frequency.
3. the noise processing method of air-conditioner outdoor unit according to claim 1, which is characterized in that described to make an uproar according to
The corresponding noise decibel value of sound crest frequency f determines that the weight gain mode of the fan blade of the blower includes:
The corresponding noise decibel value of the noise peak frequency f is obtained, and obtains the noise decibel total value of the fan noise；
The noise decibel value and the noise decibel total value are compared, the fan blade of the blower is determined according to comparative situation
Weight gain mode.
4. the noise processing method of air-conditioner outdoor unit according to claim 3, which is characterized in that described by the noise
Decibel value is compared with the noise decibel total value, and the weight gain mode step of the fan blade of the blower is determined according to comparative situation
Include:
Calculate the ratio △ of the noise decibel value Yu noise decibel total value；
When ratio △ is less than or equal to the first default ratio, determine that the fan blade does not need to increase weight；
When ratio △ is greater than the first default ratio, determine that the fan blade increases weight.
5. the noise processing method of air-conditioner outdoor unit according to claim 4, which is characterized in that when the judgement fan blade
After being increased weight, further includes:
When the ratio △ is greater than the first default ratio, and the ratio △ is less than or equal to the second default ratio, institute is determined
The predeterminated position for stating fan blade increases the weight gain mode of the first preset weight；
When the ratio △ is greater than the second default ratio, and the ratio △ presets ratio less than or equal to third, institute is determined
The predeterminated position for stating fan blade increases the weight gain mode of the second preset weight.
6. the noise processing method of air-conditioner outdoor unit according to claim 5, which is characterized in that the described first default ratio
Value is 80%, and the second default ratio is 90%, and it is 99% that the third, which presets ratio,.
7. the noise processing method of air-conditioner outdoor unit according to claim 5, which is characterized in that the described first default weight
The value range of amount is 0.5-4g, and the value range of second preset weight is 2-5g.
8. the noise processing method of air-conditioner outdoor unit according to claim 5, which is characterized in that the predeterminated position
Are as follows: on the fan blade, the position of the blade tip 15-45mm apart from the fan blade.
9. a kind of noise treatment device of air-conditioner outdoor unit characterized by comprising
Acquiring unit, the acquiring unit are used to obtain the fan noise of outdoor unit blower generation；
Noise analysis unit, the noise analysis unit are used to generate fan noise frequency spectrum according to the fan noise；
The acquiring unit is also used to obtain the corresponding noise peak of electromagnetic noise of the generation of blower described in the noise spectrum
Frequency f；
Control unit, described control unit are used to determine the wind according to the corresponding noise decibel value of the noise peak frequency f
The weight gain mode of the fan blade of machine.
10. a kind of computer readable storage medium, which is characterized in that the computer-readable recording medium storage has computer journey
Sequence when the computer program is read out by the processor and runs, realizes the method according to claim 1.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN112648765A (en) * | 2020-12-15 | 2021-04-13 | 美的威灵电机技术（上海）有限公司 | Refrigeration device |
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