CN112900035A - Air duct structure with noise reduction function, drying system and washing and drying machine - Google Patents
Air duct structure with noise reduction function, drying system and washing and drying machine Download PDFInfo
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- CN112900035A CN112900035A CN202110053928.6A CN202110053928A CN112900035A CN 112900035 A CN112900035 A CN 112900035A CN 202110053928 A CN202110053928 A CN 202110053928A CN 112900035 A CN112900035 A CN 112900035A
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- air duct
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- 238000001035 drying Methods 0.000 title claims abstract description 54
- 230000009467 reduction Effects 0.000 title claims abstract description 34
- 238000005406 washing Methods 0.000 title abstract description 21
- 230000030279 gene silencing Effects 0.000 claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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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
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Abstract
The invention discloses an air duct structure with a noise reduction function, a drying system and a washing and drying machine, wherein the air duct structure comprises: the air duct wall surrounds an air supply channel, and the local part of the air duct wall protrudes outwards to form a concave cavity on one side of the air duct wall facing the inside of the air supply channel; a sound-absorbing panel, the sound-absorbing panel comprising: the first silencing plates and the second silencing plates are alternately connected at the concave cavity to form silencing layers with different heights in the depth direction of the concave cavity, and a plurality of first silencing plates form the first silencing layers at the cavity openings of the concave cavity; a plurality of the second acoustical panels form a second acoustical layer within the cavity. The washing and drying machine adopts the air duct structure, and effectively solves the problem that the drying noise of the washing and drying machine is large in the drying process.
Description
Technical Field
The invention relates to the technical field of noise reduction of washing and drying machines, in particular to an air duct structure with a noise reduction function, a drying system and a washing and drying machine.
Background
With the continuous development of the washing machine technology, the washing machine has more and more functions at present. If the drying function is added, the clothes can be dried at the same time, but the problems of noise, vibration and the like are also brought while convenience is brought to a user. 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 user may experience a poor experience.
Disclosure of Invention
In view of the above, the invention discloses an air duct structure with a noise reduction function, a drying system and a washing and drying machine, which are used for at least solving the problem that the air duct generates high noise when the existing washing and drying machine dries clothes.
In order to achieve the above object, the invention adopts the following technical scheme:
the invention discloses an air duct structure with a noise reduction function in a first aspect, which comprises:
the air duct wall surrounds an air supply channel, and the local part of the air duct wall protrudes outwards to form a concave cavity on one side of the air duct wall facing the inside of the air supply channel;
a sound-absorbing panel, the sound-absorbing panel comprising: the first silencing plates and the second silencing plates are alternately connected at the concave cavity to form silencing layers with different heights in the depth direction of the concave cavity, and a plurality of first silencing plates form the first silencing layers at the cavity openings of the concave cavity; a plurality of the second acoustical panels form a second acoustical layer within the cavity.
Further optionally, the acoustical panel is a microperforated panel, wherein
The first sound reduction layer is flush with the cavity opening; the second silencing layer is located in the concave cavity and keeps a first preset distance with the top wall of the cavity.
Further optionally, the plate bodies of the sound-absorbing plates are continuously bent to form a plurality of groups of sound-absorbing units, and each sound-absorbing unit comprises the first sound-absorbing plate, the connecting plate and the second sound-absorbing plate which are sequentially connected.
Further optionally, a plurality of said first sound-deadening plates are provided at the cavity opening at intervals of a plate width distance of said second sound-deadening plate; accordingly, a plurality of the second sound-absorbing plates are arranged in the concave cavity at intervals of the plate width of the first sound-absorbing plate.
Further optionally, the first sound-absorbing plate has a plate thickness of not more than 1mm, a perforation rate of 3% -6% and a hole diameter of not more than 1 mm; the second sound-absorbing plate is not more than 1mm in plate thickness, 3% -6% in perforation rate and not more than 1mm in hole diameter.
In a further alternative,
the number of the concave cavities is multiple, and the concave cavities are formed on the air duct wall along the trend of the air supply channel; correspondingly, the silencing plates are multiple and correspond to the concave cavities one by one;
or,
the number of the concave cavities is multiple, and the concave cavities are formed on the air duct wall around the circumferential direction of the air supply channel; correspondingly, the silencing plates are multiple and correspond to the concave cavities one by one;
or,
the number of the concave cavities is multiple, and the concave cavities are formed on the upper wall and/or the side wall of the air duct wall along the direction perpendicular to the trend of the air supply channel; correspondingly, the silencing plates are multiple and correspond to the concave cavities one by one.
Further optionally, the number of the concave cavities is two, and the two concave cavities are formed in the upper wall of the air duct wall along a direction perpendicular to the trend of the air supply channel.
The second aspect of the present invention discloses a drying system, wherein the drying system includes any one of the above air duct structures as an air supply duct, and the drying system further includes:
an air return duct;
the outlet of the fan is connected with the air supply duct; the inlet of the fan is connected with the air return duct; and
and the heating device is arranged in the air supply duct and used for heating the air in the air supply duct.
In a third aspect, the invention discloses a washing and drying machine, which adopts the drying system to dry clothes.
Further optionally, the washing and drying machine further comprises:
a housing having a mounting cavity;
a laundry treating tub disposed within the mounting chamber;
wherein the outlet of the air supply duct is communicated with the laundry treating tub; the inlet of the air return duct is communicated with the clothes processing barrel.
Has the advantages that: the invention improves the air duct structure, and the noise reduction structure is arranged on the air duct wall, so that the problems of larger air flow pulsation noise and motor noise in the duct are effectively solved, and the influence of the additional noise reduction structure on other performances such as air output, drying efficiency and the like is smaller.
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 exemplary embodiments of the present disclosure, and other drawings may be derived by those skilled in the art without inventive effort.
FIG. 1 is a schematic cross-sectional view of an embodiment of a duct configuration;
FIG. 2 illustrates a schematic diagram of a muffler plate structure according to an embodiment.
In the figure: 1. an air duct wall; 2. a concave cavity; 3. a sound-absorbing panel; 31. a first acoustical panel; 32. a second acoustical panel.
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 existing washing machine can dry clothes after a drying function is added, but larger noise is generated in the drying process. The invention improves the air duct structure, and the noise reduction structure is arranged on the air duct structure, so that the air duct structure can be used as a drying air duct in a drying system. The noise reduction structure is mainly characterized in that concave cavities are formed in the air duct wall, and noise reduction plates with different heights are arranged to be matched with the concave cavities for noise reduction, so that noise can be effectively reduced.
To further illustrate the technical solution of the present invention, the following specific examples are provided as shown in fig. 1-2.
Example 1
In this embodiment, an air duct structure with a noise reduction function is provided, and the air duct structure includes: a duct wall 1 and a sound-damping panel 3. The air duct wall 1 encloses an air supply channel, and the local part of the air duct wall 1 protrudes outwards to form a concave cavity 2 at one side of the air duct wall 1 facing the inside of the air supply channel; the sound-deadening plate 3 includes: the first sound-absorbing plates 31 and the second sound-absorbing plates 32 are alternately connected at the concave cavities 2 to form sound-absorbing layers with different heights in the depth direction of the concave cavities, wherein the first sound-absorbing layers are formed at the openings of the concave cavities 2 by the plurality of first sound-absorbing plates 31; a plurality of second sound-deadening plates 32 form a second sound-deadening layer in the cavity 2.
Preferably, the acoustic panel 3 is a microperforated panel, in which the first acoustic layer is flush with the orifice; the second silencing layer is positioned in the concave cavity 2 and keeps a first preset distance with the top wall in the cavity of the concave cavity 2. Preferably: the first preset distance is 2 cm-3 cm. In this embodiment, the microperforated panel is compared in traditional porous sound absorbing material as a low sound quality, clean sound absorbing structure of high sound resistance, has high temperature resistant, resistant high velocity air impact, the characteristic of environmental protection. The air duct structure realizes the noise reduction in a wide frequency band by arranging the concave cavity 2 and then matching with a novel sound absorption material, namely a micro-perforated plate. It should be noted that, for different noise reduction frequencies, the parameters (aperture, plate thickness, perforation rate) of the micro-perforated plate and the depth of the cavity behind the micro-perforated plate can be adjusted to achieve the purpose. The noise reduction frequency section of the micro-perforated plate is medium-high frequency, in order to further improve the noise reduction effect of the broadband in the embodiment, the micro-perforated plates with different heights are formed after the variable cross section is adopted and are installed on the concave cavity 2, so that the purpose of broadband noise reduction is achieved by different depths of the cavity behind the micro-perforated plates.
In some alternative forms, the sound-absorbing plate 3 is an integral structure, and the plate body of the sound-absorbing plate 3 may be bent into several sections of different heights, so that multiple sets of sound-absorbing units may be formed after the plate body of the sound-absorbing plate 3 is continuously bent. At this time, each sound-deadening unit includes a first sound-deadening plate 31, a connecting plate, and a second sound-deadening plate 32, which are connected in this order. A plurality of first sound-deadening plates 31 are provided at the cavity opening at intervals of the plate width of the second sound-deadening plate 32; accordingly, a plurality of second sound-deadening plates 32 are disposed at intervals of the plate width of the first sound-deadening plate 31 in the recess cavity 2.
Preferably, the first sound-absorbing plate 31 has a plate thickness of not more than 1mm, a perforation rate of 3% to 6%, and a hole diameter of not more than 1 mm; the second sound-absorbing board 32 has a board thickness of not more than 1mm, a perforation rate of 3-6% and a hole diameter of not more than 1 mm. The thickness, the perforation rate, the hole diameter, and the like of the first sound-deadening plate 31 may be the same as or different from those of the second sound-deadening plate 32.
In some alternatives, the cavity 2 is plural; accordingly, the acoustic panel is plural and corresponds to the cavity 2 one by one. Furthermore, a plurality of concave cavities 2 can be formed on the air duct wall 1 along the trend of the air supply channel; or, a plurality of concave cavities 2 can be formed on the air duct wall 1 around the circumferential direction of the air supply channel; alternatively, a plurality of concave cavities 2 are formed on the upper wall and/or the side wall of the air duct wall 1 in a direction perpendicular to the direction of the air supply passage.
When there are two cavities 2, it is preferable that: two concave cavities 2 are formed on the upper wall of the air duct wall 1 along the direction vertical to the trend of the air supply channel. The cavity 2 may form a square recess for the depression. It should be noted that the groove may not be square, and may be replaced by other regular geometric cavities, and the regular cavities are easy to implement, and the size of the regular cavities is only required to be not interfered.
It should be noted that, in the present embodiment, the cavity 2 is designed to be located at a position downstream of the air supply passage, i.e., at a side close to the air outlet, near the air duct wall 1. The concave cavity 2 is arranged at the position and matched with the silencing plate 3 to achieve the best effect of silencing and reducing the noise of the air duct.
Example 2
In this embodiment, a drying system is provided, where the drying system includes the air duct structure in embodiment 1 as an air supply duct, and the drying system further includes: an air return duct; the outlet of the fan is connected with the air supply duct; the inlet of the fan is connected with the air return duct; and the heating device is arranged in the air supply duct and used for heating the air in the air supply duct. In the embodiment, the cavity 2 in the air duct structure is matched with the sound absorption plate 3 to form a cavity sound absorption structure so as to reduce the noise of the resonant cavity, and the airflow pulsation noise, the high-frequency sound of the motor and the like in the pipeline of the drying system can be effectively reduced.
Example 3
In the present embodiment, a washing and drying machine is provided, which uses the air duct structure of embodiment 1 as a drying air duct, or uses the drying system of embodiment 2 to dry clothes.
Specifically, the washing and drying machine further comprises: a housing having a mounting cavity; the clothes processing barrel is arranged in the mounting cavity; wherein the outlet of the air supply duct is communicated with the clothes treatment barrel; the inlet of the air return channel is communicated with the clothes processing barrel.
In the drying process of the washing and drying machine, a fan of a drying system is always in a high-speed running state, and the noise of a fan motor and the noise of air flow of an air duct are particularly obvious. The embodiment sets out the structure of the air outlet of the air supply duct of the drying system, adopts novel sound absorption materials and improves, reduces the noise of the drying system on the transmission path, and improves the silence comfort of the whole machine.
As shown in fig. 1-2, in order to reduce the loud noise generated during the drying process of the washing machine, in this embodiment, the air duct of the washing and drying machine is improved, and a noise reduction structure is designed at the air outlet to eliminate the noise. Specifically, form two bellied regular square cavities near the upper wall of air outlet, bond the micropunch plate of variable cross section in the cavity bottom, it is parallel with wind channel airflow flow direction, the aperture and the thick 1mm that all are less than of micropunch plate, the perforation rate is about 5%, the material is aluminium, to the frequency of making an uproar that falls of difference, generally can realize through the parameter (aperture, thick, perforation rate), the micropunch plate cavity degree of depth behind the back of adjustment micropunch plate. In the air duct structure in the embodiment, the micro-perforated plate is bent into two sections with different heights, and the distance between the micro-perforated plate and the wall surface of the cavity is different, so that the depth of the cavity behind the micro-perforated plate is indirectly changed, the noise reduction frequency is changed accordingly, and the purpose of broadband noise reduction is achieved.
In conclusion, the resonance type sound absorption structure is combined with the novel sound absorption material, the noise reduction of the drying air duct of the washing and drying machine is realized after the air duct structure is improved, the device is simple in structure and convenient to install, and under the condition that the influence on other performances such as drying efficiency is small, the noise and high-speed airflow sound generated by the fan motor in the drying process can be reduced to the greatest extent, so that the noise of the whole machine is greatly improved.
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 (10)
1. An air duct structure with a noise reduction function, characterized in that the air duct structure includes:
the air duct wall surrounds an air supply channel, and the local part of the air duct wall protrudes outwards to form a concave cavity on one side of the air duct wall facing the inside of the air supply channel;
a sound-absorbing panel, the sound-absorbing panel comprising: the first silencing plates and the second silencing plates are alternately connected at the concave cavity to form silencing layers with different heights in the depth direction of the concave cavity, and a plurality of first silencing plates form the first silencing layers at the cavity openings of the concave cavity; a plurality of the second acoustical panels form a second acoustical layer within the cavity.
2. The structure of an air duct with noise reduction function according to claim 1, wherein the noise reduction plate is a micro-perforated plate, wherein
The first sound reduction layer is flush with the cavity opening; the second silencing layer is located in the concave cavity and keeps a first preset distance with the top wall of the cavity.
3. The air duct structure with noise reduction function according to claim 2, wherein the plate bodies of the sound-absorbing plates are continuously bent to form a plurality of groups of sound-absorbing units, and each sound-absorbing unit comprises the first sound-absorbing plate, the connecting plate and the second sound-absorbing plate which are connected in sequence.
4. The air duct structure with noise reduction function according to claim 3, wherein a plurality of the first muffling plates are provided at the cavity opening at intervals of a plate width distance of the second muffling plate; accordingly, a plurality of the second sound-absorbing plates are arranged in the concave cavity at intervals of the plate width of the first sound-absorbing plate.
5. The air duct structure with the noise reduction function according to claim 1, wherein the first noise reduction plate has a plate thickness of not more than 1mm, a perforation rate of 3% to 6%, and a hole diameter of not more than 1 mm; the second sound-absorbing plate is not more than 1mm in plate thickness, 3% -6% in perforation rate and not more than 1mm in hole diameter.
6. The structure of an air duct with a noise reduction function according to any one of claims 1 to 5,
the number of the concave cavities is multiple, and the concave cavities are formed on the air duct wall along the trend of the air supply channel; correspondingly, the silencing plates are multiple and correspond to the concave cavities one by one;
or,
the number of the concave cavities is multiple, and the concave cavities are formed on the air duct wall around the circumferential direction of the air supply channel; correspondingly, the silencing plates are multiple and correspond to the concave cavities one by one;
or,
the number of the concave cavities is multiple, and the concave cavities are formed on the upper wall and/or the side wall of the air duct wall along the direction perpendicular to the trend of the air supply channel; correspondingly, the silencing plates are multiple and correspond to the concave cavities one by one.
7. The structure of an air duct with a noise reduction function according to claim 6, wherein the number of the cavities is two, and two cavities are formed in the upper wall of the air duct wall in a direction perpendicular to the direction of the air supply passage.
8. A drying system, characterized in that the drying system includes the air duct structure of any one of claims 1 to 7 as an air supply duct, and the drying system further includes:
an air return duct;
the outlet of the fan is connected with the air supply duct; the inlet of the fan is connected with the air return duct; and
and the heating device is arranged in the air supply duct and used for heating the air in the air supply duct.
9. A washer dryer characterized in that said washer dryer employs the drying system of claim 8 for drying laundry.
10. The washer dryer as recited in claim 9, further comprising:
a housing having a mounting cavity;
a laundry treating tub disposed within the mounting chamber;
wherein the outlet of the air supply duct is communicated with the laundry treating tub; the inlet of the air return duct is communicated with the clothes processing barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110053928.6A CN112900035A (en) | 2021-01-15 | 2021-01-15 | Air duct structure with noise reduction function, drying system and washing and drying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110053928.6A CN112900035A (en) | 2021-01-15 | 2021-01-15 | Air duct structure with noise reduction function, drying system and washing and drying machine |
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| Publication Number | Publication Date |
|---|---|
| CN112900035A true CN112900035A (en) | 2021-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110053928.6A Pending CN112900035A (en) | 2021-01-15 | 2021-01-15 | Air duct structure with noise reduction function, drying system and washing and drying machine |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009077782A (en) * | 2007-09-25 | 2009-04-16 | Hitachi Appliances Inc | Drying machine, and washing and drying machine |
| CN107039028A (en) * | 2017-06-02 | 2017-08-11 | 郭辰曦 | A kind of performance test methods of wideband perforated plate |
| CN110894669A (en) * | 2019-11-21 | 2020-03-20 | 珠海格力电器股份有限公司 | Silencing structure of washing machine drying air duct and washing machine |
-
2021
- 2021-01-15 CN CN202110053928.6A patent/CN112900035A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009077782A (en) * | 2007-09-25 | 2009-04-16 | Hitachi Appliances Inc | Drying machine, and washing and drying machine |
| CN107039028A (en) * | 2017-06-02 | 2017-08-11 | 郭辰曦 | A kind of performance test methods of wideband perforated plate |
| CN110894669A (en) * | 2019-11-21 | 2020-03-20 | 珠海格力电器股份有限公司 | Silencing structure of washing machine drying air duct and washing machine |
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Application publication date: 20210604 |