CN108866967A - A kind of denoising structure for washing machine - Google Patents
A kind of denoising structure for washing machine Download PDFInfo
- Publication number
- CN108866967A CN108866967A CN201810872893.7A CN201810872893A CN108866967A CN 108866967 A CN108866967 A CN 108866967A CN 201810872893 A CN201810872893 A CN 201810872893A CN 108866967 A CN108866967 A CN 108866967A
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- CN
- China
- Prior art keywords
- washing machine
- operatic tunes
- noise reduction
- noise
- back shroud
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- D06F39/12—Casings; Tubs
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
The invention discloses a kind of denoising structures for washing machine, are related to washing machine technology field, and the noise to solve the problems, such as washing machine in the prior art is larger and invents.A kind of denoising structure for washing machine of the present invention, including shell of the washing machine back shroud towards washing tub side is arranged in, the shell on washing machine back shroud for forming at least two noise reduction operatic tunes, the at least two noise reductions operatic tunes is respectively positioned in a plane parallel with the washing machine back shroud, side on the shell far from the washing machine back shroud offers multiple through-holes, multiple through-holes are connected to the described at least two noise reduction operatic tunes respectively, and the volume of at least two noise reductions operatic tunes differs.The noise that a kind of denoising structure for washing machine of the present invention generates for reducing washing machine operation.
Description
Technical field
The present invention relates to washing machine technology field more particularly to a kind of denoising structures for washing machine.
Background technique
Washing machine is a kind of common household electrical appliance, as the improvement of people's living standards, to the noise size of washing machine
It is required that also increasingly tending to stringent.The noise source of washing machine is more, wherein motor is one of main noise source.Motor is made an uproar
Sound can generally be solved by improving motor, but improve the higher cost of motor.
Referring to Fig.1, the cabinet of the washing machine of the prior art includes the first cabinet 01 and the second cabinet 02, the second cabinet 02
Inside in the first cabinet 01 and interval setting, as double-layer box body structure in inward-outward direction, in the first cabinet 01 and second
Helmholtz resonance chamber 03 is set between cabinet 02, and the second cabinet 02 is equipped with and offers through-hole 021.
Helmholtz resonance chamber 03 between casing of washing machine can be directed to the fixation highest list of noise source (such as motor operation sound)
Frequency carries out noise reduction, but poor for the noise reduction effect of other higher harmonics of noise source, and the noise reduction of helmholtz resonance chamber 03
Frequency domain is relatively narrow, so that the matching between the resonant frequency of helmholtz resonance chamber 03 and noise source frequency is poor, causes to do washing
The noise of machine is still larger.
Summary of the invention
The embodiment of the present invention provides a kind of denoising structure for washing machine, can improve making an uproar for washing machine in the prior art
The larger problem of sound.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that：
A kind of denoising structure for washing machine, including shell of the washing machine back shroud towards washing tub side is arranged in,
The shell for forming at least two noise reduction operatic tunes on washing machine back shroud, at least two noise reductions operatic tunes be respectively positioned on
In a parallel plane of the washing machine back shroud, the side on the shell far from the washing machine back shroud offers more
A through-hole, multiple through-holes are connected to the described at least two noise reduction operatic tunes respectively, at least two noise reductions operatic tunes
Volume etc..
Denoising structure provided in an embodiment of the present invention for washing machine, because motor for washer operation sound mainly passes through laundry
The shell towards washing tub side is arranged in the outflow of machine back shroud on washing machine back shroud, forms at least two drops by shell
Noise chamber, when motor for washer operation generate noise through on shell far from washing machine back shroud side multiple through-holes respectively into
When entering above-mentioned two or more than two noise reduction operatic tunes, the noise can noise reducing it is intracavitary by reflection, refraction, friction, it is viscous and
Vortex etc., so that acoustic wave energy is converted into thermal energy, the noise of washing machine back shroud outflow is reduced, so that the noise of washing machine is obvious
Reduce；And the volume of the above-mentioned at least two noise reductions operatic tunes is unequal, i.e., two or more noise reductions in denoising structure
The operatic tunes can carry out noise reduction for multiple higher peak values, imitate to the noise source with multiple higher harmonics with preferable noise reduction
Fruit；Compared to the prior art, after the noise reduction frequency domain superposition of multiple noise reduction operatic tunes, the noise reduction frequency band of denoising structure has been widened, it can be into
One step improves noise reduction effect, reduces the matching deviation between the resonant frequency of denoising structure and the noise frequency of motor for washer.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the cabinet of washing machine in the prior art；
Fig. 2 is the three dimensional structure diagram in the embodiment of the present invention for the denoising structure of washing machine；
Fig. 3 is the schematic cross-section in the embodiment of the present invention for the denoising structure of washing machine.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " center ", "upper", "lower", "front", "rear", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on the figure
Orientation or positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
Washing machine is a kind of common household electrical appliance, and washing machine includes cabinet, is equipped with washing tub and driving motor in cabinet,
Driving motor is for driving washing tub to rotate, to clean the clothing in washing tub.
Referring to Fig. 2~3, the denoising structure in the embodiment of the present invention for washing machine includes being arranged in washing machine back shroud
100 towards washing tub side shell 1, the shell 1 for forming at least two noise reduction operatic tunes on washing machine back shroud 100,
At least two above-mentioned noise reduction operatic tunes are respectively positioned in a plane parallel with washing machine back shroud 100, far from laundry on shell 1
The side of machine back shroud 100 offers multiple through-holes 12, and multiple through-holes 12 are connected to at least two noise reduction operatic tunes respectively, above-mentioned
The volume of at least two noise reduction operatic tunes differs.
Denoising structure provided in an embodiment of the present invention for washing machine, because motor for washer operation sound mainly passes through laundry
Machine back shroud 100 is spread out of, and the shell 1 towards washing tub side is arranged on washing machine back shroud 100, is formed extremely by shell 1
Few two noise reduction operatic tunes, when the noise that motor for washer operation generates is through more far from 100 side of washing machine back shroud on shell 1
When a through-hole 12 respectively enters above-mentioned two or more than two noise reduction operatic tunes, which can be reflected, rolled over noise reducing is intracavitary
It penetrates, rub, viscous and vortex etc., so that acoustic wave energy is converted into thermal energy, the noise that washing machine back shroud 100 is spread out of is reduced, from
And the noise of washing machine is obviously reduced；And the volume of the above-mentioned at least two noise reductions operatic tunes is unequal, i.e., two in denoising structure
A or more than two noise reduction operatic tunes can carry out noise reduction for multiple higher peak values, to the noise source with multiple higher harmonics
With preferable noise reduction effect；Compared to the prior art, after the noise reduction frequency domain superposition of multiple noise reduction operatic tunes, denoising structure has been widened
Noise reduction frequency band, can further improve noise reduction effect, reduce the resonant frequency of denoising structure and the noise frequency of motor for washer
Between matching deviation.
Further, at least two above-mentioned noise reduction operatic tunes include the first noise reduction operatic tunes 101, form the portion of the noise reduction operatic tunes
Side in housing parts 1 far from washing machine back shroud 100 is the first perforated plate 11, is laid with first in the inner wall of the first perforated plate 11
Sound-absorbing material 2 carries out noise reduction by the noise reduction operatic tunes and the combination of the first sound-absorbing material 2, so that the first noise reduction operatic tunes 101 is corresponding total
Peak shake with wideband effect, i.e., there is preferable noise reduction effect to the wider frequency domain of motor operation sound.
Optionally, at least two above-mentioned noise reduction operatic tunes can be the first noise reduction acoustical cavity, can also be different structure.Such as
The above-mentioned at least two noise reductions operatic tunes further includes the second noise reduction operatic tunes 102, and the partial shell 1 for forming the second noise reduction operatic tunes 102 is separate
The side of washing machine back shroud is the second perforated plate 13, is equipped with intubation 3 in the through-hole 12 on the second perforated plate 13.In intubation 3
Air column is considered as mass body, under the acoustic pressure of noise as piston back and forth movement, in the second noise reduction operatic tunes 102
Therefore air does expansion compression variation, form mass-spring vibration systems；It is hindered due to existing in above-mentioned mass-spring vibration systems
Buddhist nun enables a part of sound to be converted into thermal energy consumption and dissipates, when frequency of sound wave is identical as the intrinsic frequency of the second noise reduction operatic tunes 102
When, vibrational system resonates, at this time air column in through-hole 12 back and forth movement, friction and so that sound is dissipated, to reach drop
The purpose of low noise, the excellent noise reduction effect of the second noise reduction operatic tunes 102；And the first noise reduction operatic tunes 101 and the second noise reduction operatic tunes 102
Structure it is different so that noise reduction frequency domain is different, after the superposition of noise reduction frequency domain, so that denoising structure frequency domain is wider, noise reduction effect is also more
It is good.
Optionally, 3 one end of intubation are located at outside the second noise reduction operatic tunes 102, and the other end is concordant with the plate face of the second perforated plate 13,
Or the middle part of intubation 3 is connect with the second perforated plate 13, or 3 one end of intubation are located in the second noise reduction operatic tunes 102, the other end and second
The plate face of perforated plate 13 is concordant.Because usual motor is installed close to washing machine back shroud, 3 one end of intubation are located at the second noise reduction operatic tunes
Outside 102, the other end scheme concordant with the plate face of the second perforated plate 13, so that intubation 3 is easy to generate interference with motor, limitation drop
The application for structure of making an uproar.Therefore, latter two scheme is preferentially used.
Further, another embodiment of the present invention is arranged the second sound-absorbing material 4 in the second noise reduction operatic tunes 102, and second
Sound-absorbing material 4 is arranged in shell 1 close to the side of washing machine back shroud 100 or is set up directly on washing machine back shroud 100, the
The two noise reduction operatic tunes 102 have both 4 two kinds of denoising structures of the noise reduction operatic tunes and the second sound-absorbing material, and the second sound-absorbing material 4 can be mentioned further
The noise reduction effect of the high second noise reduction operatic tunes 102, noise reduction frequency domain are wider.
Based on the above embodiment, it is additionally provided with third perforated plate 5 in the above-mentioned second noise reduction operatic tunes 102, the third perforated plate 5
Between intubation 3 and the second sound-absorbing material 4, third perforated plate 5 has certain noise reduction effect, makes the drop of the second noise reduction operatic tunes 102
Effect of making an uproar is more preferable.
Preferably, the through-hole diameter on third perforated plate 5 is different from 3 diameter of intubation on the second perforated plate 13, increase sound
Wave the second noise reduction operatic tunes refraction, reflection and diffraction etc. so that the noise reduction effect of third perforated plate 5 is preferable.
Optionally, third perforated plate 5 can have certain gap with the second sound-absorbing material 4, form another noise reduction operatic tunes；
Or the surface of third perforated plate 5 is contacted with the surface of the second sound-absorbing material 4, third perforated plate 5 can be used for fixing the second sound absorption
Material 4.
According to the noise frequency domain that the motor that existing washing machine uses generates, the one of 3 is intubated in one embodiment of the present of invention
The 1/2 or 1/4 of the depth H of the second noise reduction operatic tunes 102 of end insertion, as shown in figure 3, the crest frequency that can be directed to motor operation sound is equal
With preferable noise reduction effect.Certainly, for other different type motors, the noise spectrum that can be obtained according to test determines laundry
After the main noise frequency range of machine, then determine the depth bounds of the second noise reduction of insertion operatic tunes 102 of intubation 3.
Optionally, above-mentioned shell 1 can be the cavity with certain stereochemical structure, such as cuboid；Or after washing machine
Cover board 100 is equipped with protrusion towards the side far from washing tub, and above-mentioned shell 1 includes cover board, and cover plate lid is located in protrusion to be formed
The above-mentioned noise reduction operatic tunes.The area of the scheme of the latter, shell 1 is small, and required material is less, and cost is relatively low.
Optionally, above-mentioned two or more than two noise reduction operatic tunes space sets, can also be continuously arranged.For continuously setting
The two or more noise reduction operatic tunes set, specific embodiment scheme can further include one or more partitions 6 for shell 1, every
The chamber that above-mentioned cover board and washing machine back shroud 100 surround is separated into at least two noise reduction operatic tunes by plate 6, multiple noise reduction operatic tunes
Structure is simpler.By taking two noise reduction operatic tunes as an example, if the shape of two noise reduction operatic tunes is identical, because two noise reduction operatic tunes volume not
Together, partition 6 need to be placed on to the upper middle or position on the lower side of the chamber that shell and washing machine back shroud 100 surround.
Optionally, the through-hole 12 on above-mentioned the first perforated plate 11 and third perforated plate 5 can for different pore size (or perforation
Rate), can also be same apertures (or punching rate).
Similarly, above-mentioned first sound-absorbing material 2 and the second sound-absorbing material 4 can also use identical sound-absorbing material, can also be used not
Same sound-absorbing material.Optionally, the first sound-absorbing material 2 and the second sound-absorbing material 4 are any in fibrous material or porous material
Kind.Specifically, fibrous material can be felt, alumina silicate rock wool, glass fiber rock wool or polyester fiber, and porous material can be foam
Aluminium, resin foam or plastic foam.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of denoising structure for washing machine, which is characterized in that including setting in washing machine back shroud towards washing tub one
The shell of side, the shell on washing machine back shroud for forming at least two noise reduction operatic tunes, at least two noise reducing
Chamber is respectively positioned in a plane parallel with the washing machine back shroud, the one of the separate washing machine back shroud on the shell
Side offers multiple through-holes, and multiple through-holes are connected to the described at least two noise reduction operatic tunes respectively, and described at least two
The volume of the noise reduction operatic tunes differs.
2. the denoising structure according to claim 1 for washing machine, which is characterized in that at least two noise reductions operatic tunes
Including the first noise reduction operatic tunes, forming the side in the partial shell of the first noise reduction operatic tunes far from the washing machine back shroud is
The inner wall of first perforated plate, first perforated plate is equipped with the first sound-absorbing material.
3. the denoising structure according to claim 2 for washing machine, which is characterized in that at least two noise reductions operatic tunes
It further include the second noise reduction operatic tunes, the partial shell for forming the second noise reduction operatic tunes is far from the side of the washing machine back shroud
Second perforated plate is equipped with intubation in the through-hole on second perforated plate.
4. the denoising structure according to claim 3 for washing machine, which is characterized in that second noise reducing is intracavitary to be set
There is the second sound-absorbing material, second sound-absorbing material is laid with the side close to the washing machine back shroud or institute on the housing
It states on washing machine back shroud.
5. the denoising structure according to claim 4 for washing machine, which is characterized in that second noise reducing is intracavitary also
Equipped with third perforated plate, the third perforated plate is located between the intubation and second sound-absorbing material.
6. the denoising structure according to claim 5 for washing machine, which is characterized in that the surface of third perforated plate and institute
State the surface contact of the second sound-absorbing material.
7. the denoising structure according to claim 3 for washing machine, which is characterized in that institute is inserted into one end of the intubation
At state the depth of the second noise reduction operatic tunes 1/2 or 1/4.
8. the denoising structure according to claim 1 for washing machine, which is characterized in that the washing machine back shroud is towards remote
Side from the washing tub is equipped with protrusion, and the shell includes cover board, and the cover plate lid is located in the protrusion to be formed
State the noise reduction operatic tunes.
9. the denoising structure according to claim 8 for washing machine, which is characterized in that the shell further includes at least one
The chamber that the cover board and the washing machine back shroud surround can be separated at least two noise reductions by a partition, the partition
The operatic tunes.
10. the denoising structure according to claim 4 for washing machine, which is characterized in that first sound-absorbing material and
Second sound-absorbing material is any one of fibrous material or porous material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810872893.7A CN108866967A (en) | 2018-08-02 | 2018-08-02 | A kind of denoising structure for washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810872893.7A CN108866967A (en) | 2018-08-02 | 2018-08-02 | A kind of denoising structure for washing machine |
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| Publication Number | Publication Date |
|---|---|
| CN108866967A true CN108866967A (en) | 2018-11-23 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810872893.7A Pending CN108866967A (en) | 2018-08-02 | 2018-08-02 | A kind of denoising structure for washing machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN108866967A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111503410A (en) * | 2020-04-01 | 2020-08-07 | 西安交通大学 | Helmholtz type silencer |
| CN113862969A (en) * | 2021-08-12 | 2021-12-31 | 中国电器科学研究院股份有限公司 | Noise reduction method for washing machine |
| WO2022217867A1 (en) * | 2021-04-13 | 2022-10-20 | 无锡小天鹅电器有限公司 | Rear cover apparatus and clothing treatment device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2051253U (en) * | 1989-06-14 | 1990-01-17 | 马鞍山钢铁公司 | Control device for noise of wide-frequency-spectrum and large acoustic level |
| CN1173937A (en) * | 1995-01-27 | 1998-02-18 | 里特汽车国际有限公司 | Lambda/4 sound absorber |
| CN1397688A (en) * | 2001-07-13 | 2003-02-19 | 四川省交通厅公路规划勘察设计研究院 | Sound-absorbing barrier for highway |
| CN1947170A (en) * | 2004-04-30 | 2007-04-11 | 株式会社神户制钢所 | Porous sound absorbing structure |
| CN101666029A (en) * | 2008-09-03 | 2010-03-10 | 博西华电器（江苏）有限公司 | Household electric appliance |
| CN103256258A (en) * | 2013-05-10 | 2013-08-21 | 同济大学 | Silencer for fuel cell car air auxiliary system |
| CN203230511U (en) * | 2013-04-25 | 2013-10-09 | 西南大学 | Serial-parallel combined resonant silencer |
| CN203910263U (en) * | 2014-05-16 | 2014-10-29 | 四川正升声学科技有限公司 | A low frequency sound absorption structure |
| CN205013165U (en) * | 2015-10-13 | 2016-02-03 | 长春乐石科技有限公司 | Engine and silencer thereof |
| CN207241953U (en) * | 2017-10-10 | 2018-04-17 | 哈尔滨工程大学船舶装备科技有限公司 | Loading board in a kind of sound absorption of convenient dismounting |
-
2018
- 2018-08-02 CN CN201810872893.7A patent/CN108866967A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2051253U (en) * | 1989-06-14 | 1990-01-17 | 马鞍山钢铁公司 | Control device for noise of wide-frequency-spectrum and large acoustic level |
| CN1173937A (en) * | 1995-01-27 | 1998-02-18 | 里特汽车国际有限公司 | Lambda/4 sound absorber |
| CN1397688A (en) * | 2001-07-13 | 2003-02-19 | 四川省交通厅公路规划勘察设计研究院 | Sound-absorbing barrier for highway |
| CN1947170A (en) * | 2004-04-30 | 2007-04-11 | 株式会社神户制钢所 | Porous sound absorbing structure |
| CN101666029A (en) * | 2008-09-03 | 2010-03-10 | 博西华电器（江苏）有限公司 | Household electric appliance |
| CN203230511U (en) * | 2013-04-25 | 2013-10-09 | 西南大学 | Serial-parallel combined resonant silencer |
| CN103256258A (en) * | 2013-05-10 | 2013-08-21 | 同济大学 | Silencer for fuel cell car air auxiliary system |
| CN203910263U (en) * | 2014-05-16 | 2014-10-29 | 四川正升声学科技有限公司 | A low frequency sound absorption structure |
| CN205013165U (en) * | 2015-10-13 | 2016-02-03 | 长春乐石科技有限公司 | Engine and silencer thereof |
| CN207241953U (en) * | 2017-10-10 | 2018-04-17 | 哈尔滨工程大学船舶装备科技有限公司 | Loading board in a kind of sound absorption of convenient dismounting |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111503410A (en) * | 2020-04-01 | 2020-08-07 | 西安交通大学 | Helmholtz type silencer |
| WO2022217867A1 (en) * | 2021-04-13 | 2022-10-20 | 无锡小天鹅电器有限公司 | Rear cover apparatus and clothing treatment device |
| CN113862969A (en) * | 2021-08-12 | 2021-12-31 | 中国电器科学研究院股份有限公司 | Noise reduction method for washing machine |
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Application publication date: 20181123 |
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