CN110894669A - Silencing structure of washing machine drying air duct and washing machine - Google Patents
Silencing structure of washing machine drying air duct and washing machine Download PDFInfo
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- CN110894669A CN110894669A CN201911149749.1A CN201911149749A CN110894669A CN 110894669 A CN110894669 A CN 110894669A CN 201911149749 A CN201911149749 A CN 201911149749A CN 110894669 A CN110894669 A CN 110894669A
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- air duct
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- perforated plate
- washing machine
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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
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
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- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
The invention provides a silencing structure suitable for a drying air duct of a washing machine, which is arranged on the drying air duct positioned at the downstream of a fan, wherein an air inlet of the drying air duct is connected with an air outlet of the fan, an air outlet of the drying air duct is connected with a drying barrel, and the silencing structure comprises: the drying air duct is characterized in that an outward convex cavity formed in the upper wall surface of the drying air duct is sealed and arranged on a micro-perforated plate at the cavity opening of the cavity, is positioned on the rear side of the micro-perforated plate and is paved on the inner wall of the cavity at a preset interval with the micro-perforated plate. The invention also provides a washing machine with the silencing structure.
Description
Technical Field
The invention relates to a noise reduction technology for an air duct of a washing machine, in particular to a noise reduction structure for a drying air duct of a washing machine and the washing machine.
Background
With the continuous development of washing machine technology, the current washing machine has more and more functions. The problems of noise, vibration and the like also come with the convenience of users. For example, when the washing machine enters a drying stage after completing a dehydration process, the drum is in a low rotation speed state, and noise generated by the drying system is a main noise source of the whole machine.
The resonant cavity noise reduction is a common and effective noise reduction measure in engineering, and has been widely applied to large-scale air pipes, exhaust pipes and other pipeline devices, the resonant cavity and a sound absorption material are combined to form a cavity sound absorption structure, and airflow pulsation noise, motor high-frequency sound and the like in a drying system pipeline can be effectively reduced. In order to effectively solve the problem that the noise of the whole washing machine is larger in the drying process, a new noise reduction structure and the washing machine are needed to be provided.
Disclosure of Invention
In view of the above, the present invention provides a silencing structure for a drying air duct of a washing machine and a washing machine, to solve the above problems, specifically:
the invention provides a silencing structure suitable for a drying air duct of a washing machine, which is arranged on the drying air duct positioned at the downstream of a fan, wherein an air inlet of the drying air duct is connected with an air outlet of the fan, and an air outlet of the drying air duct is connected with a drying barrel, and is characterized in that the silencing structure comprises: the drying air duct is characterized in that an outward convex cavity formed in the upper wall surface of the drying air duct is sealed and arranged on a micro-perforated plate at the cavity opening of the cavity, is positioned on the rear side of the micro-perforated plate and is paved on the inner wall of the cavity at a preset interval with the micro-perforated plate.
Preferably, the micro-perforated plate is parallel to the air flow direction of the air duct, the sound insulation layer is positioned right behind the micro-perforated plate, and the cavity is of a regular structure.
Preferably, the cavity is a rectangular protruding structure, wherein the long side of the rectangular protruding structure is consistent with the trend of the air supply duct.
Preferably, the micro-perforated plate, the distance between the micro-perforated plate and the sound insulation layer behind the micro-perforated plate can be adjusted according to different noise reduction frequencies.
Preferably, the sound insulation layer is made of EVA materials.
Preferably, the distance between the sound insulation layer and the micro-perforated plate is 2.5cm-3 cm.
Preferably, the micro-perforated plate is provided with a plurality of through holes, wherein the thickness of the micro-perforated plate is less than or equal to 1mm, the aperture of each through hole is less than or equal to 1mm, and the perforation rate ranges from 4% to 6%.
Preferably, the cavity protrusion height is 3cm-4 cm.
Preferably, the cavity is arranged above the drying air duct.
Preferably, the silencing structure is arranged at one end of the drying air duct close to the fan.
Preferably, the edges of the acoustic insulation layer are fixed to the inner side walls of the cavity.
A second aspect of the present invention provides a washing machine having a noise reduction function, the washing machine including: the air-conditioning system comprises a drying air channel, a fan and a drying cylinder, wherein the drying air channel is communicated with the drying fan and the drying cylinder, and the drying air channel adopts any one of the noise reduction structures.
The invention has the technical effects that: the noise reduction structure of the drying air duct is utilized to reduce noise, so that the problems of airflow pulsation noise and high motor noise in the duct can be effectively solved, and the influence on other performances such as air output, drying efficiency and the like is small. The air duct with the silencing structure is arranged on the washing machine, so that the problem that the washing machine generates large noise in the working process can be effectively solved, and the user experience is improved.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely some embodiments of the present disclosure, and other drawings may be derived from those drawings by those of ordinary skill in the art without inventive effort.
FIG. 1 is a schematic view of a silencing structure for an air duct according to an embodiment of the present invention.
1-a microperforated plate; 2-sound insulation layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and "a" and "an" generally include at least two, but do not exclude at least one, unless the context clearly dictates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
The invention aims at silencing noise generated by a drying air duct and a fan connected with the drying air duct, and a silencing structure of the drying air duct is arranged near the air duct close to an air outlet of the fan. The structure comprises a cavity structure, and a novel sound absorption material, namely a micro-perforated plate, is matched to form a resonance sound absorption structure. The micro-perforated plate is used as a clean sound absorption structure with low sound quality and high sound resistance, and compared with the traditional porous sound absorption material, the micro-perforated plate has the characteristics of high temperature resistance, high-speed airflow impact resistance and environmental protection. Aiming at different noise reduction frequencies, the method can be realized by adjusting the parameters (the aperture, the plate thickness and the perforation rate) of the micro-perforated plate and the depth of a cavity at the back of the micro-perforated plate. The micro-perforated plate is used for absorbing noise, the noise reduction frequency section of the micro-perforated plate is medium-high frequency, and meanwhile, the micro-perforated plate further adopts EVA sound absorption materials as auxiliary sound insulation for enhancing the noise reduction effect of the high frequency section. The connection position relation between the micro-perforated plate and the cavity, between the EVA sound-absorbing material and the micro-perforated plate, and between the micro-perforated plate and the cavity is improved, so that the high-efficiency noise reduction is realized.
Example 1
As shown in fig. 1, in this embodiment, a noise reduction structure suitable for a drying air duct of a washing machine is disclosed, and the noise reduction structure can be disposed on the drying air duct located at the downstream of a fan, and since an air inlet of the drying air duct is connected to an air outlet of the fan, and an air outlet of the drying air duct is connected to a drying barrel, the noise in the air duct and the noise of the fan can be eliminated. Specifically, this amortization structure includes: the drying air duct comprises a cavity which is formed by the upper wall surface of the drying air duct and is outwards convex, a micro-perforated plate 1 which is sealed at the cavity opening of the cavity, and a sound insulation layer 2 which is positioned at the rear side of the micro-perforated plate (one side in the cavity) and is laid on the inner wall of the cavity at a preset interval with the micro-perforated plate.
In this embodiment, the direction of paving the microperforated panel is parallel with wind channel airflow direction of flow, and the puigging is located the microperforated panel directly behind, and the cavity is regular structure. The structure can be a square structure, a rectangular structure or a round structure, etc. The setting of regular structure has reduced or has avoided the influence of cavity self to the noise behind the microperforated panel, does benefit to simultaneously to arrange the puigging and carries out the amortization to the noise that propagates to this department.
Preferably, the cavity is a rectangular protruding structure, wherein the long side of the rectangular protruding structure is consistent with the trend of the air supply duct. Because wind channel upper portion space is limited, the cuboid cavity can be with the space maximize, if adopt other shapes such as cylinder, the space can reduce, influences the sound absorption effect, adopts rectangle protruding structure also can reduce the degree of difficulty of laying of microperforated panel in addition. Furthermore, the height of the rectangular cavity is about 3-4cm, and the space set by the height can ensure a better sound absorption effect and does not occupy too much space. In addition, the width and the length of the air duct can be further adjusted according to the specific structure of the air duct.
Further, the cavity is arranged above the drying air duct, so that the phenomenon that a large amount of moisture in the air flow is absorbed to reduce the sound absorption performance can be avoided.
Preferably, the distance between the sound-insulating layer and the microperforated plate is 2.5cm-3 cm. This interval can match with intracavity actual height and adjust, can guarantee to reserve the space that is equipped with the puigging promptly.
For different noise sources, in this embodiment, the microperforated panel and the sound insulation interlayer spacing behind them can be adjusted according to different noise reduction frequencies, such as the parameters of aperture, plate thickness, perforation rate, etc. of the microperforated panel. Specifically, these parameters of the microperforated panel can be calculated by substituting them into a theoretical formula to match the frequency to be eliminated. For example, after the fan is selected, in order to eliminate some medium-high frequency noise (mainly above 2000 Hz) of the fan, the fan can be realized by adjusting the parameters of the micro-perforated plate. Therefore, when sound absorption is carried out on high-frequency noise, the sound absorption characteristic of the micro-perforated plate is utilized, and the corresponding hole number, the hole diameter, the plate thickness and the perforation rate are set to obtain specific size parameter values, wherein the perforation rate is the proportion of the perforated area to the whole plate area.
According to a specific implementation mode, the micro-perforated plates with different parameters can be directly replaced according to actual needs.
When the high-frequency noise is silenced, preferably, the micro-perforated plate is provided with a plurality of through holes, wherein the thickness of the micro-perforated plate is less than or equal to 1mm, the aperture of each through hole is less than or equal to 1mm, and the perforation rate ranges from 4% to 6%.
Preferably, the sound insulation layer is made of EVA material, and can also be made of other sound insulation materials with better sound insulation property. The edges of the acoustical layer are secured to the inside walls of the cavity. The sound insulation material and the micro-perforated plate are matched to realize sound insulation of high-frequency noise.
In this embodiment, the microperforated panel size is a bit bigger than the accent of cavity, and this size need satisfy can fix the microperforated panel in the accent can, and a fixed mode is at the marginal rubber coating of microperforated panel periphery, bonds with the accent edge of cavity, can also select other modes to fix, such as bolt fastening etc.. The silencing structure that adopts this microperforated panel and EVA material to set up can set up the one end that is close to the fan in the stoving wind channel. The noise that the fan produced can furthest be kept apart to this department.
In addition, the cavity required by the silencing structure can be integrally formed with the air duct or independently arranged, and an opening with a corresponding size is matched on the air duct and is connected with the opening in a matching manner so as to be used for silencing the air duct.
Example 2
Disclosed in the present embodiment is a washing machine having a noise reduction function, the washing machine including: including stoving wind channel, fan and drying cylinder, wherein through stoving wind channel intercommunication drying fan and drying cylinder, the amortization structure in embodiment 1 is adopted in the stoving wind channel.
In the drying process of the washing machine, a fan of the drying system is always in a high-speed running state, and the noise of a fan motor and the noise of air flow in an air duct are particularly prominent. The technical scheme of the invention starts to improve the structure of the drying air channel, and adopts a novel sound absorption material to reduce the noise of the drying system from a transmission path and improve the silencing comfort of the whole machine.
The present invention will be described in further detail with reference to specific embodiments.
As shown in fig. 1, a drying duct in a washing machine includes: a micro-perforated plate 1 and an EVA sound absorption material 2. The invention aims to reduce the larger noise generated in the drying process of the washing machine, and improves the design of the air duct structure, a raised regular cuboid cavity is formed on the upper wall surface near the inlet (close to the air outlet of the fan) of the drying air duct, a micro-perforated plate 1 is laid at the bottom of the cavity and is parallel to the air flow direction of the air duct, the aperture and the plate thickness of the micro-perforated plate are both smaller than or equal to 1mm, the perforation rate is 5 +/-1%, the air duct is mainly used for sound absorption of high frequency bands in the air duct, and the air duct is mainly used for absorbing harmonic noise generated by the fan. The cavity is arranged on the upper wall surface of the air channel, the EVA material layer is tightly attached to the upper wall surface (cavity bottom) in the cavity and is parallel to the micro-perforated plate, and the peripheral edge of the EVA material layer is fixed on the inner wall surface in a bonding mode to improve the high-frequency sound insulation capability of the air channel and reduce the high-frequency electromagnetic sound of the motor and the high-speed airflow sound of the air channel. The EVA sound insulation layer is positioned right above the micro-perforated plate and keeps a certain distance with the micro-perforated plate. The distance from the EVA sound insulation layer to the micro-perforated plate can be any distance between 2.5 and 3cm by combining the height of the cavity and the thickness of the EVA sound insulation layer, because resonant sound absorption needs to form a cavity with a certain depth behind the micro-perforated plate, and the arrangement mode can also avoid absorbing a large amount of moisture in air flow to reduce the sound absorption performance.
In summary, the following steps: the noise reduction device for the drying air duct of the washing machine is facilitated by combining the resonance sound absorption structure with the novel sound absorption material. The device simple structure, the installation of being convenient for under the less condition of other performance influences such as drying efficiency, can reduce noise and high-speed air current sound that the fan motor produced in the drying process by at utmost, make the noise of complete machine obtain great improvement then.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (12)
1. The utility model provides a amortization structure suitable for washing machine stoving wind channel sets up on the stoving wind channel that is located the fan low reaches, the air intake in stoving wind channel is connected with the air outlet of fan, the air outlet in stoving wind channel is connected with the stoving bucket, its characterized in that, the amortization structure includes: the drying air duct is characterized in that an outward convex cavity formed in the upper wall surface of the drying air duct is sealed and arranged on a micro-perforated plate at the cavity opening of the cavity, is positioned on the rear side of the micro-perforated plate and is paved on the inner wall of the cavity at a preset interval with the micro-perforated plate.
2. The silencing structure of claim 1, wherein the micro-perforated plate is parallel to the airflow direction of the air duct, the sound insulation layer is located right behind the micro-perforated plate, and the cavity is a regular structure.
3. The silencing structure of claim 2, wherein the cavity is a rectangular protrusion, and the long side of the rectangular protrusion is aligned with the direction of the air supply duct.
4. The silencing structure of claim 3, wherein the micro-perforated plate, the micro-perforated plate and the sound insulation layer at the back of the micro-perforated plate can be adjusted according to different noise reduction frequencies.
5. The noise reduction structure for the drying air duct of the washing machine as claimed in claim 4, wherein the noise insulation layer is made of EVA material.
6. The noise reduction structure for the drying duct of the washing machine according to claim 5, wherein the distance between the soundproof layer and the micro perforated plate is 2.5cm-3 cm.
7. The silencing structure of claim 6, wherein the microperforated panel has a plurality of through holes, wherein the microperforated panel has a thickness of 1mm or less, a hole diameter of 1mm or less, and a perforation rate ranging from 4% to 6%.
8. The noise reduction structure for drying air duct of washing machine as claimed in claim 7, wherein the height of the cavity protrusion is 3cm-4 cm.
9. The silencing structure of any one of claims 1-8, wherein said cavity is disposed above the drying air duct.
10. The silencing structure of claim 9, wherein the silencing structure is disposed at an end of the drying air duct near the blower.
11. The noise reduction structure for drying duct of washing machine as claimed in claim 10, wherein the edge of the soundproof layer is fixed on the inner sidewall of the cavity.
12. A washing machine having a noise reduction function, the washing machine comprising: the silencer comprises a drying air duct, a fan and a drying drum, wherein the drying air duct is communicated with the drying fan and the drying drum, and the silencer is characterized in that the drying air duct adopts the silencing structure in any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911149749.1A CN110894669A (en) | 2019-11-21 | 2019-11-21 | Silencing structure of washing machine drying air duct and washing machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911149749.1A CN110894669A (en) | 2019-11-21 | 2019-11-21 | Silencing structure of washing machine drying air duct and washing machine |
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| CN110894669A true CN110894669A (en) | 2020-03-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112301627A (en) * | 2020-09-16 | 2021-02-02 | 海信（山东）冰箱有限公司 | Noise-reduction washing machine |
| CN112900035A (en) * | 2021-01-15 | 2021-06-04 | 珠海格力电器股份有限公司 | Air duct structure with noise reduction function, drying system and washing and drying 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 |
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| JPH0226598A (en) * | 1988-07-15 | 1990-01-29 | Hitachi Ltd | Automatic washer |
| CN2378416Y (en) * | 1999-04-29 | 2000-05-17 | 海尔集团公司 | Vibrat damping and noise-lowering apparatus for washing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112301627A (en) * | 2020-09-16 | 2021-02-02 | 海信（山东）冰箱有限公司 | Noise-reduction washing machine |
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| 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 |
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