CN106988085B - Noise reduction system and noise reduction method of washing machine and washing machine - Google Patents
Noise reduction system and noise reduction method of washing machine and washing machine Download PDFInfo
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- CN106988085B CN106988085B CN201710278830.4A CN201710278830A CN106988085B CN 106988085 B CN106988085 B CN 106988085B CN 201710278830 A CN201710278830 A CN 201710278830A CN 106988085 B CN106988085 B CN 106988085B
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- 238000005406 washing Methods 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000012545 processing Methods 0.000 claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims description 38
- 230000008030 elimination Effects 0.000 claims description 29
- 238000003379 elimination reaction Methods 0.000 claims description 29
- 230000001105 regulatory effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
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- 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
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
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- Detail Structures Of Washing Machines And Dryers (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
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Abstract
The invention discloses a noise reduction system and a noise reduction method of a washing machine and the washing machine, wherein the noise reduction system of the washing machine comprises a noise acquisition module; and a noise processing module: processing the collected noise signals to obtain at least one frequency of major noise contributions; noise cancellation module: comprises at least one long tube with adjustable length, which eliminates the noise of main noise contribution; and a control module: the length of the long tube is adjusted. The noise reduction system accurately eliminates the noise with different frequencies playing a main role, and has obvious noise reduction effect particularly in the dewatering stage of the washing machine; noise is reduced without changing the existing operation of the washing machine; the noise reduction system is not easy to be blocked, so that the noise reduction effect is reduced, and the noise reduction effect is obvious; the whole structure is simple, the reliability is high, and the operation and maintenance are convenient.
Description
Technical Field
The present invention relates to a noise reduction system and a noise reduction method for a washing machine, and more particularly, to a noise reduction system and a noise reduction method for eliminating noise generated when a washing machine is operated, and a washing machine having the same.
Background
Most of the bottoms of the washing machines are open, noise generated in the washing machines can be transmitted outwards in the dewatering operation process of the washing machines, the noise is formed by superposition of noise with different frequencies, noise with certain frequencies plays a major role in the noise of the washing machines, and after the contribution of the noise with certain frequencies is reduced, the noise in the dewatering stage of the washing machines can be effectively reduced, and the product quality and the user experience are effectively improved.
The chinese patent application No. 201410395520.7 discloses a pulsator washing machine with a noise sensor and a noise monitoring method thereof, which performs a deceleration or eccentricity adjustment process on the washing machine by comparing a monitored value with a preset limit value. Although the method can effectively reduce noise, the method also has influence on the self operation of the washing machine, and can cause incomplete washing and incomplete dehydration or prolonged washing, rinsing and dehydration time, so that the user experience is poor.
Chinese patent application No. 2016610494839. X discloses a cabinet for a washing machine and a washing machine having the same, a washing machine having a special cabinet, the cabinet for a washing machine comprising: the first box and the second box, the second box is established the inboard of first box, the second box with inject the helmholtz resonance chamber between the first box, be formed with on the second box with a plurality of helmholtz through-holes that the helmholtz resonance chamber communicates with each other. The second box body with the Helmholtz through holes and the Helmholtz resonant cavity can form a Helmholtz resonant sound absorption structure, so that the purposes of sound absorption and noise reduction are achieved. The structure is more complicated, the requirement on the product is also very high, the size precision requirement of the Helmholtz Huo Citong hole is high, the effects of sound absorption and noise reduction are not easy to achieve and are easily blocked by sundries, the maintenance is very inconvenient, meanwhile, the noise frequencies generated by different washing machines are different, the corresponding Helmholtz resonance sound absorption structures are also different, and the adaptability is poor.
At present, no simple and effective noise reduction device is available for noise generated during the operation of the washing machine, particularly for noise generated during the dehydration.
The present invention has been made in view of this.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing a noise reduction system and a noise reduction method for eliminating noise generated during the operation of a washing machine and the washing machine with the system.
In order to solve the technical problems, the invention adopts the basic conception of the technical scheme that: a noise reduction system of a washing machine includes
A noise acquisition module;
and a noise processing module: processing the collected noise signals to obtain at least one frequency of major noise contributions;
noise cancellation module: comprises at least one long tube with adjustable length, which eliminates the noise of main noise contribution;
and a control module: the length of the long tube is adjusted.
Further, the long tube of the noise elimination module is of a tubular structure with one end closed, and the other end of the long tube is open and connected with the noise treatment module.
The control module adjusts the length of the long tube to be one quarter of the wavelength of a main noise sound wave, the main noise sound wave enters the long tube from one end of the opening of the long tube, and is reflected back to the closed end of the long tube to be counteracted in the long tube.
The long tube at least comprises two sleeved tubes with different sizes and matched shapes, and the length of the whole tube is adjusted by adjusting the position of at least one tube; or the long tube is a tube which can be elastically stretched in length.
Further, the control module comprises a control motor and a transmission device, the transmission device is connected with the long tube, the control motor controls the transmission device to adjust the length of the long tube, and preferably, the transmission device is a gear transmission device.
The noise elimination module and the control module are arranged on the inner side of the box body of the washing machine, and preferably, the noise elimination module and the control module are arranged on the inner side of the box body right in front of the washing machine.
At least two groups of noise elimination modules are arranged at different positions on the inner side of the washing machine box body, and each group of noise elimination modules comprises at least one long tube.
The noise acquisition module is arranged in the box body of the washing machine and close to the noise source, and preferably, the noise acquisition module is arranged on the bottom table of the washing machine.
The noise reduction method of the noise reduction system comprises the following steps:
(1) The noise acquisition module acquires noise generated in the running process of the washing machine;
(2) The noise processing module is used for processing the noise signals acquired by the noise acquisition module to obtain at least one frequency of main noise contribution and obtain the wavelength of the frequency;
(3) The control module controls the length of each long pipe of the noise elimination module to be adjusted to be one quarter of the wavelength of each main noise according to the information acquired by the noise processing module, and eliminates the main noise.
The invention also provides a washing machine, which comprises a noise reduction system of the washing machine. The noise reduction system of the washing machine includes: a noise acquisition module; and a noise processing module: processing the collected noise signals to obtain at least one frequency of major noise contributions; noise cancellation module: comprises at least one long tube with adjustable length, which eliminates the noise of main noise contribution; and a control module: the length of the long tube is adjusted.
The long tube of the noise elimination module is of a tubular structure with one end closed, and the other end of the long tube is open and connected with the noise treatment module. The control module adjusts the length of the long tube to be one quarter of the wavelength of a main noise sound wave, the main noise sound wave enters the long tube from one end of the opening of the long tube, and is reflected back to the closed end of the long tube to be counteracted in the long tube. The long tube at least comprises two sleeved tubes with different sizes and matched shapes, and the length of the whole tube is adjusted by adjusting the position of at least one tube; or the long tube is a tube which can be elastically stretched in length. The control module comprises a control motor and a transmission device, wherein the transmission device is connected with the long tube, the control motor controls the transmission device to adjust the length of the long tube, and preferably, the transmission device is a gear transmission device. The noise elimination module and the control module are arranged on the inner side of the box body of the washing machine. At least two groups of noise elimination modules are arranged at different positions on the inner side of the washing machine box body, and each group of noise elimination modules comprises at least one long tube. The noise acquisition module is arranged in the box body of the washing machine and close to the noise source, and preferably, the noise acquisition module is arranged on the bottom table of the washing machine.
By adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects.
1. The noise with different frequencies which play a main role is accurately eliminated, and the noise reduction effect is obvious particularly in the dewatering stage of the washing machine;
2. the noise is reduced without changing the existing operation of the washing machine, the effects of washing, dewatering and the like are ensured while the noise is reduced, and the time of the operations of washing, dewatering and the like is not increased;
3. the noise reduction system is not easy to be blocked, so that the noise reduction effect is reduced, and the noise reduction effect is obvious;
4. the whole structure is simple, the reliability is high, and the operation and maintenance are convenient.
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:
FIG. 1 is a schematic view of a noise reduction system of a washing machine according to the present invention;
FIG. 2 is a schematic diagram of a noise cancellation module and a control module of the present invention.
In the figure: 1. a washing machine; 11. a washing machine box body; 12. a washing machine bottom table; 2. a noise acquisition module; 3. a noise cancellation module; 31. a long tube; 4. a control module; 41. controlling a motor; 42. a transmission device.
It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings. As shown in fig. 1-2, the present invention provides a noise reduction system and a noise reduction method for a washing machine 1, and the noise reduction system for the washing machine 1 includes:
a noise acquisition module 2;
and a noise processing module: processing the collected noise signals to obtain at least one frequency of major noise contributions;
noise cancellation module 3: comprising at least one long tube 31 of adjustable length, eliminating the noise contribution of the main noise;
and a control module 4: the length of the long tube 31 is adjusted.
The noise reduction system of the washing machine 1 adopted by the invention is applicable to most washing machines 1, and pulsator washing machines or drum washing machines are applicable. But also to other machines or applications where noise reduction is desired. Most of the washing machines 1 are open at the bottom, and during the operation of the washing machine 1, particularly during the dewatering operation, noises generated inside the washing machine 1 are transmitted outwards therefrom, and these noises are superimposed by noises of different frequencies, some of which have a major influence on the noises of the washing machine 1. The noise of the washing machine 1 with the bottom not being open is also overlapped by the noise with different frequencies, and the noise reduction system can also be used for effectively reducing the noise.
In the above scheme, the noise collecting module 2 collects noise and is arranged near a source generating noise; the noise processing module analyzes and processes the noise acquired by the noise acquisition module 2 to obtain one or more frequencies with main noise contribution, and obtains the noise wavelength with the main noise contribution through the frequencies; the noise cancellation module 3 comprises at least one long tube 31 of adjustable length, with which long tube 31 the noise of the main noise contribution is cancelled; the control module 4 adjusts the length of the long tube 31 to eliminate the noise according to the wavelength of the main noise contribution.
The long tube 31 of the noise elimination module 3 has a tubular structure with one end closed, and the other end is open and connected with the noise treatment module.
In the above-mentioned scheme, the open end of long tube 31 links to each other with noise processing module, and the noise is collected by noise acquisition module 2 and is got into long tube 31 from the open end of long tube 31 after noise processing module handles, and the blind end to long tube 31 is reflected, and the sound wave after the reflection can offset each other with former sound wave under certain condition.
The control module 4 adjusts the length of the long tube 31 to be one quarter of the wavelength of a primary noise sound wave that enters the long tube from the open end of the long tube 31 to reflect back to the closed end of the long tube 31 to cancel out in the long tube 31.
The long tube 31 comprises at least two sleeved tubes with different sizes and matched shapes, and the integral tube length is adjusted by adjusting the position of at least one tube; or the long tube 31 is a tube elastically stretchable in length.
In the above scheme, the small-size pipe is sleeved in the large-size pipe, the control module 4 directly moves the position of the large/small-size pipe to adjust the pipe length, or threads are arranged between the large-size pipe and the small-size pipe, and the control module 4 adjusts the pipe length by rotating the large/small-size pipe. Or the long tube 31 is a corrugated tube; or the long tube 31 is a tube made of an elastic material and having a variable length and other dimensions.
The noise collecting module 2 obtains the wavelength of the noise according to the collected noise frequency of the main noise contribution, and the control module 4 adjusts the tube length of the long tube 31 of the noise eliminating module 3 according to the wavelength so that the tube length is equal to one fourth of the noise wavelength of the main noise contribution to eliminate the noise.
The control module 4 comprises a control motor 41 and a transmission device 42, wherein the transmission device 42 is connected with the long tube 31, the control motor 41 controls the transmission device 42 to adjust the length of the long tube 31, and preferably, the transmission device 42 is a gear transmission device 42.
In the above-described scheme, the transmission means 42 adjusts the length of the long tube 31 under the control of the control motor 41 so that the length of the long tube 31 is equal to one-fourth of the wavelength of noise to be eliminated to effectively eliminate the noise. The transmission 42 may be a gear transmission 42, a belt transmission 42 or a chain transmission 42, and in the present invention, the gear transmission 42 is preferable in view of space, accuracy, maintenance, and the like.
The noise elimination module 3 and the control module 4 are disposed inside the cabinet of the washing machine 1.
In the above-described scheme, in order to more effectively eliminate noise to be eliminated, and at the same time, for the aesthetic appearance of the whole product, the noise elimination module 3 and the control module 4 are disposed inside the cabinet of the washing machine 1, preferably, the noise elimination module 3 and the control module 4 are disposed inside the cabinet right in front of the washing machine 1.
At least two sets of noise cancellation modules 3 are arranged in different orientations inside the washing machine housing 11, each set of noise cancellation modules 3 comprising at least one long tube 31.
In the above-mentioned scheme, in order to more effectively and thoroughly eliminate the noise contributed by the main noise, at least two groups of noise elimination modules 3 are arranged at different orientations inside the washing machine box 11, and each group of noise elimination modules 3 comprises at least one long tube 31; each group of noise canceling modules 3 is connected with the control module 4 to cancel the noise thereof by the control module 4, or each group of noise canceling modules 3 is connected with one group of control modules 4 to cancel the noise thereof by the control module 4 itself.
The noise collection module 2 is arranged in the washing machine box 11 and is close to a noise source, and preferably, the noise collection module 2 is arranged on the washing machine base 12.
In the above-mentioned scheme, in order to more effectively eliminate noise, the noise collection module 2 is disposed in the washing machine box 11 and is disposed close to the noise source. In general, the engine, etc. of the washing machine 1 are disposed at the position of the cabinet, that is, the noise source is close to the cabinet 12, so that the noise collection module 2 is preferably disposed at the cabinet 12.
Preferably, the noise pickup module 2 includes a microphone disposed on the washing machine base 12 near the noise source for better noise pickup.
The noise reduction method of the noise reduction system comprises the following steps:
(1) The noise acquisition module 2 acquires noise generated in the running process of the washing machine 1;
(2) The noise processing module processes the noise signals acquired by the noise acquisition module 2 to obtain at least one frequency of main noise contribution and obtain the wavelength of the frequency;
(3) The control module 4 controls the length of each long tube 31 of the noise elimination module 3 to be one-to-one corresponding to one fourth of the wavelength of each main noise according to the information collected by the noise processing module, and eliminates the main noise.
The invention also proposes a washing machine 1 comprising a noise reduction system of a washing machine 1 as described above.
Example 1
As shown in fig. 1-2, in the present embodiment, there is provided a noise reduction system of a washing machine 1, comprising
A noise acquisition module 2;
and a noise processing module: processing the collected noise signals to obtain at least one frequency of major noise contributions;
noise cancellation module 3: comprising at least one long tube 31 of adjustable length, eliminating the noise contribution of the main noise;
and a control module 4: the length of the long tube 31 is adjusted.
The noise elimination module 3 includes five long pipes 31, and noise contributed by the main noise is eliminated by the long pipes 31.
The long tube 31 is a tubular structure with one end closed, and the other end is open and connected with the noise processing module; the long tube 31 may be varied in length in its length direction.
The control module 4 adjusts the length of the long tube 31 to be one quarter of the wavelength of a primary noise sound wave that enters the long tube from the open end of the long tube 31 to reflect back to the closed end of the long tube 31 to cancel out in the long tube 31.
The long tube 31 at least comprises two sleeved tubes with different sizes and matched shapes, the small-size tube is sleeved in the large-size tube, the control module 4 directly moves the position of the large/small-size tube to adjust the tube length, or threads are arranged between the large-size tube and the small-size tube, and the control module 4 adjusts the tube length in a mode of rotating the large/small-size tube.
The noise collecting module 2 obtains the wavelength of the noise according to the collected noise frequency of the main noise contribution, and the control module 4 adjusts the tube length of the long tube 31 according to the wavelength so that the tube length is equal to one fourth of the noise wavelength of the main noise contribution to eliminate the noise.
The control module 4 comprises a control motor 41 and a transmission device 42, wherein the transmission device 42 is connected with the long tube 31, the control motor 41 controls the transmission device 42 to adjust the length of the long tube 31, and the transmission device 42 is a gear transmission device 42.
The noise elimination module 3 and the control module 4 are disposed inside the cabinet of the washing machine 1.
The noise pickup module 2 comprises a microphone provided on the washing machine base 12, close to the noise source.
The noise reduction method of the noise reduction system comprises the following steps:
(1) The microphone collects noise generated in the running process of the washing machine 1, particularly in the dewatering process, and transmits the collected noise signals to the noise processing module;
(2) The noise processing module is used for processing noise signals acquired by the microphone to obtain at least one frequency of main noise contribution and converting the frequency to obtain the wavelength of the frequency;
(3) According to the noise wavelength of the main noise contribution, the control motor 41 drives the gear transmission device 42 to control the length of each long tube 31 of the noise elimination module to be adjusted to be one fourth of the wavelength of each main noise, so that the noise of the main noise contribution is eliminated.
Example two
As shown in fig. 1-2, in the present embodiment, there is provided a noise reduction system of a washing machine 1, comprising
A noise acquisition module 2;
and a noise processing module: processing the collected noise signals to obtain at least one frequency of major noise contributions;
noise cancellation module 3: comprising at least one long tube 31 of adjustable length, eliminating the noise contribution of the main noise;
and a control module 4: the length of the long tube 31 is adjusted.
The long tube 31 is a tubular structure with one end closed, and the other end is open and connected with the noise processing module; the long tube 31 may be varied in length in its length direction.
The control module 4 adjusts the length of the long tube 31 to be one quarter of the wavelength of a primary noise sound wave that enters the long tube from the open end of the long tube 31 to reflect back to the closed end of the long tube 31 to cancel out in the long tube 31.
The long tube 31 at least comprises two sleeved tubes with different sizes and matched shapes, the small-size tube is sleeved in the large-size tube, the control module 4 directly moves the position of the large/small-size tube to adjust the tube length, or threads are arranged between the large-size tube and the small-size tube, and the control module 4 adjusts the tube length in a mode of rotating the large/small-size tube.
The noise collecting module 2 obtains the wavelength of the noise according to the collected noise frequency of the main noise contribution, and the control module 4 adjusts the tube length of the long tube 31 according to the wavelength so that the tube length is equal to one fourth of the noise wavelength of the main noise contribution to eliminate the noise.
The control module 4 comprises a control motor 41 and a transmission device 42, wherein the transmission device 42 is connected with the long tube 31, the control motor 41 controls the transmission device 42 to adjust the length of the long tube 31, and the transmission device 42 is a gear transmission device 42.
At least two groups of said noise cancellation modules 3 are arranged in different orientations inside the washing machine housing 11, each group of noise cancellation modules 3 comprising at least one long tube 31. Each group of noise elimination modules 3 is connected with the control module 4, and the noise elimination modules 4 control the noise elimination.
The noise collection module 2 is arranged in the washing machine box 11 and is close to a noise source, and preferably, the noise collection module 2 is arranged on the washing machine base 12.
The noise reduction method of the noise reduction system comprises the following steps:
(1) The noise acquisition module 2 acquires noise generated in the running process of the washing machine 1;
(2) The noise processing module processes the noise signals acquired by the noise acquisition module 2 to obtain at least one frequency of main noise contribution and obtain the wavelength of the frequency;
(3) The control module 4 controls the length of each long tube 31 of the noise elimination module 3 to be one-to-one corresponding to one fourth of the wavelength of each main noise according to the information collected by the noise processing module, and eliminates the main noise.
Example III
As shown in fig. 1-2, in the present embodiment, there is provided a noise reduction system of a washing machine 1, comprising
A noise acquisition module 2;
and a noise processing module: processing the collected noise signals to obtain at least one frequency of major noise contributions;
noise cancellation module 3: comprising at least one long tube 31 of adjustable length, eliminating the noise contribution of the main noise;
and a control module 4: the length of the long tube 31 is adjusted.
Unlike the second embodiment, at least two sets of noise canceling modules 3 are provided in different orientations inside the washing machine housing 11, each set of noise canceling modules 3 comprising at least one long tube 31. Each group of noise cancellation modules 3 is connected to a group of control modules 4, which are controlled by their own control modules 4 to cancel noise.
The long tube 31 is a quarter corrugated tube.
The foregoing description is only illustrative of the preferred embodiment of the present invention, and is not to be construed as limiting the invention, but is to be construed as limiting the invention to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the invention, may be made by those skilled in the art without departing from the scope of the invention.
Claims (11)
1. A noise reduction system for a washing machine, comprising: comprising
A noise acquisition module;
and a noise processing module: processing the collected noise signals to obtain at least one frequency of major noise contributions;
noise cancellation module: comprises at least one long tube with adjustable length, which eliminates the noise contributed by main noise;
and a control module: the length of the long tube is regulated to be one quarter of the wavelength of sound waves of main noise, so that the main noise is eliminated;
the control module comprises a control motor and a transmission device, the transmission device is connected with the long tube, and the control motor controls the transmission device to adjust the length of the long tube.
2. A noise reduction system of a washing machine as claimed in claim 1, wherein: the long tube of the noise elimination module is of a tubular structure with one end closed, and the other end of the long tube is open and connected with the noise treatment module.
3. A noise reduction system of a washing machine as claimed in claim 2, wherein: the main noise sound wave enters the long tube from one end of the opening of the long tube, is reflected back to the closed end of the long tube, and is counteracted in the long tube.
4. A noise reduction system of a washing machine as claimed in claim 3, wherein: the long tube at least comprises two sleeved tubes with different sizes and matched shapes, and the length of the whole tube is adjusted by adjusting the position of at least one tube; or the long tube is a tube which can be elastically stretched in length.
5. A noise reduction system of a washing machine as claimed in claim 1, wherein: the transmission device is a gear transmission device.
6. A noise reduction system for a washing machine as claimed in any one of claims 2 to 5, wherein: the noise elimination module and the control module are arranged on the inner side of the box body of the washing machine.
7. The noise reduction system of a washing machine as claimed in claim 6, wherein: at least two groups of noise elimination modules are arranged at different positions on the inner side of the washing machine box body, and each group of noise elimination modules comprises at least one long tube.
8. A noise reduction system of a washing machine as claimed in claim 1, wherein: the noise acquisition module is arranged in the box body of the washing machine and is close to the noise source.
9. The noise reduction system of a washing machine as claimed in claim 8, wherein: the noise acquisition module is arranged on the bottom table of the washing machine.
10. A noise reduction method of a noise reduction system of a washing machine as claimed in any one of claims 1 to 9, characterized by: the method comprises the following steps:
(1) The noise acquisition module acquires noise generated in the running process of the washing machine;
(2) The noise processing module is used for processing the noise signals acquired by the noise acquisition module to obtain at least one frequency of main noise contribution and obtain the wavelength of the frequency;
(3) The control module controls the length of each long pipe of the noise elimination module to be adjusted to be one quarter of the wavelength of each main noise according to the information acquired by the noise processing module, and eliminates the main noise.
11. A washing machine, characterized in that: a noise reduction system comprising a washing machine as claimed in any one of claims 1-9.
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| JP7099879B2 (en) * | 2018-06-07 | 2022-07-12 | 日立グローバルライフソリューションズ株式会社 | washing machine |
| CN109087625B (en) * | 2018-08-27 | 2023-03-31 | 电子科技大学 | Variable length multi-purpose active noise control apparatus and method thereof |
| CN115050347A (en) * | 2022-07-12 | 2022-09-13 | 合肥美的电冰箱有限公司 | Noise silencer |
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