CN111041796B - Drying air duct noise reduction structure, heat pump washing and drying integrated machine and dryer - Google Patents
Drying air duct noise reduction structure, heat pump washing and drying integrated machine and dryer Download PDFInfo
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- CN111041796B CN111041796B CN201911396125.XA CN201911396125A CN111041796B CN 111041796 B CN111041796 B CN 111041796B CN 201911396125 A CN201911396125 A CN 201911396125A CN 111041796 B CN111041796 B CN 111041796B
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- drying
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- air duct
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- 238000001035 drying Methods 0.000 title claims abstract description 142
- 238000005406 washing Methods 0.000 title claims abstract description 32
- 230000030279 gene silencing Effects 0.000 claims abstract description 75
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 230000018044 dehydration Effects 0.000 abstract description 3
- 238000006297 dehydration reaction Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000001743 silencing effect Effects 0.000 description 1
Classifications
-
- 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
- D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
-
- 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
- D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
- D06F58/04—Details
-
- 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
- D06F58/206—Heat pump arrangements
-
- 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
- D06F58/26—Heating arrangements, e.g. gas heating equipment
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
The invention relates to a noise reduction structure of a drying air duct, a heat pump washing and drying integrated machine and a dryer; the noise reduction structure comprises a noise reduction structure, a drying box body and an air duct; a drying cavity is formed in the drying box body, and a silencing structure is arranged at the front end of the drying box body and is positioned at an air inlet of the drying cavity; the silencing structure reduces the wind noise of the gas flowing through the silencing structure and entering the drying cavity; the air duct is arranged at the air outlet of the drying box body; the noise reduction structure of the drying air duct can effectively reduce the wind noise of the heat pump washing and drying integrated machine or the dryer during drying or dehydration, reduce the sound power of the whole machine, improve the user experience feel and enable the product to have better competitiveness.
Description
Technical Field
The invention relates to the technical field of air duct noise reduction of washing and drying integrated machines, in particular to a drying air duct noise reduction structure, a heat pump washing and drying integrated machine and a dryer.
Background
The existing heat pump washing and drying integrated machine comprises a washing machine roller, a fan and a drying box body module; when the heat pump washing and drying integrated machine is used for drying, a fan is started at first, and wind generated by starting the fan blows into a roller through an air duct; the wind in the roller is discharged into a combined box for accommodating the compressor through an air outlet of the roller, and hot air is generated through a compression mechanism; the hot air returns to the roller through the fan and the air duct to dry clothes; in the whole process, noise is generated when the fan is started to operate, noise is generated when wind enters the roller from the air duct, wind noise is also generated when wind enters the drying box body from the roller, and air noise is also possibly generated when wind enters the assembly box; therefore, in order to improve the user experience, reducing the wind noise of the heat pump washing and drying integrated machine is also a technical problem which needs to be overcome urgently.
In the prior art, most of the existing schemes are researched aiming at inlets and outlets of fans, air channels and air channels, but noise is generated when the air in a washing machine or a clothes dryer enters a drying box body, and the researches are not yet found; for example: the Chinese patent number CN207892898U discloses a low-noise fan, and the scheme disclosed by the invention is that a sound-absorbing cotton structure is additionally arranged at an air inlet of the fan, so that the invention can absorb the gas sound of the air inlet of the fan; the method cannot be directly applied to a heat pump washing and drying integrated machine and a dryer.
Disclosure of Invention
The invention aims to solve the problem of large wind noise of a heat pump washing and drying integrated machine and a dryer.
The invention mainly aims to provide a noise reduction structure of a drying air duct, which specifically comprises the following schemes:
The noise reduction structure comprises a noise reduction structure, a drying box body and an air duct; a drying cavity is formed in the drying box body, and a silencing structure is arranged at the front end of the drying box body and is positioned at an air inlet of the drying cavity; the silencing structure reduces the wind noise of the gas flowing through the silencing structure and entering the drying cavity; the air duct is arranged at the air outlet of the drying box body.
Further, the noise reduction structure also comprises a fan, and the fan is arranged at the rear end of the drying box body and is positioned in the drying cavity; the air inlet of the fan is provided with a noise reduction plate which is transversely arranged in the drying cavity, so that the wind noise of the air flowing through the noise reduction plate and entering the fan is reduced; one end of the air duct is connected with an air outlet of the fan.
Further, the silencing structure comprises a shell structure and a plurality of silencing boxes; a silencing cavity is formed in the shell structure; the upper end face and the lower end face of the silencing box are respectively sealing surfaces, and a plurality of silencing holes are formed in the side face of the silencing box; the plurality of silencing boxes are arranged in the silencing cavity side by side along the vertical direction, and dislocation spaces are formed between the adjacent silencing boxes at the air inlet and the air outlet along the vertical direction, so that gas can enter the silencing boxes through the silencing holes on the dislocation spaces at the air inlet and flow out of the silencing boxes through the silencing holes at the air outlet.
Further, the front end of the silencing box is fixedly arranged at the air inlet of the silencing cavity through a fixing plate; the rear end of the silencing box is fixedly arranged at the air outlet of the silencing cavity through a fixing plate; one end of the shell structure is fixedly connected with the drying box body through a bolt, and the other end of the shell structure can be connected with a rear air duct of the washing and drying integrated machine or the dryer through a corrugated hose.
Further, the noise reduction plate is a perforated plate, and the perforated plate comprises a first perforated plate and a second perforated plate; the first perforated plate and the second perforated plate are arranged in the drying cavity side by side perpendicular to the flowing direction of the gas and are positioned at the air inlet of the fan.
Further, the first perforated plate and the second perforated plate are clamped in the U-shaped groove on the inner wall of the drying box body; the first perforated plate and the second perforated plate reduce wind noise of the gas by resonance sound absorption.
Further, a plurality of perforations are formed in the perforated plate, and the diameters of the perforations are smaller than 1mm; and/or the perforation rate is less than 5% of the whole perforation plate.
Further, a heating component is arranged in the drying cavity, and the other end of the air duct is communicated with a drum of the washing and drying integrated machine or the dryer; the air enters the drying cavity through the silencing structure to heat, and enters the air duct through the fan to enter the roller to dry.
The invention further aims to provide a heat pump washing and drying integrated machine, which specifically comprises the following scheme:
The heat pump washing and drying integrated machine comprises a drying air duct noise reduction structure, wherein the drying air duct noise reduction structure is the drying air duct noise reduction structure.
Another object of the present invention is to provide a dryer, which specifically includes the following schemes:
The dryer comprises a drying air duct noise reduction structure, wherein the drying air duct noise reduction structure is the drying air duct noise reduction structure.
The invention provides a noise reduction structure for a drying air duct, which aims at noise at the positions of a rear air duct of an existing heat pump washing and drying integrated machine or a rear air duct of a dryer and an air inlet of a fan, can effectively reduce wind noise of the heat pump washing and drying integrated machine or the dryer during drying or dehydration, reduce the sound power of the whole machine, improve the user experience, and enable products to have better competitiveness.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a front view of a noise reduction structure of a drying duct according to embodiment 1 of the present invention;
Fig. 2 is a top view of a noise reduction structure of a drying duct according to embodiment 1 of the present invention;
fig. 3 is a partial cross-sectional view of a noise reduction structure of a drying duct according to embodiment 1 of the present invention;
FIG. 4 is an enlarged schematic view of portion A of FIG. 3;
fig. 5 is a partial cross-sectional view of a noise reduction structure of a drying duct according to embodiment 1 of the present invention;
fig. 6 is a front view of a silencing structure provided in embodiment 1 of the present invention;
fig. 7 is a bottom view of the silencing structure according to embodiment 1 of the present invention;
fig. 8 is a cross-sectional view of a sound deadening structure provided in embodiment 1 of the present invention;
Fig. 9 is a schematic structural diagram of a silencing box according to embodiment 1 of the present invention.
In the figure: 1. a sound deadening structure; 11. screw holes; 12. a sound deadening box; 121. a sound deadening hole; 122. a lower end surface; 13. an air inlet; 14. an air outlet; 15. a housing structure; 16. a fixing plate; 17. a fixing plate; 2. drying the box body; 3. a blower; 4. an air duct; 5. a first perforated plate; 6. a second perforated plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or quantity or position.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Example 1
As shown in fig. 1 to 9, the present invention provides a noise reduction structure for a drying air duct, which can be applied to an existing heat pump washing and drying integrated machine or dryer, for reducing noise in a drying box or air duct; the noise reduction structure specifically comprises a noise reduction structure 1, a drying box body 2 and an air duct 4; wherein, a drying cavity is formed in the drying box body 2, a heating component is arranged in the drying cavity and is used for providing heat exchange energy for the drying cavity so as to heat the gas flowing through the drying cavity; further, the air duct 4 is arranged at the air outlet of the drying box body 2, one end of the air duct 4 is communicated with the drying cavity, and the other end of the air duct 4 can be communicated with the roller; further, the silencing structure 1 is arranged at the front end of the drying box body 2 and is positioned at the air inlet of the drying cavity, so that the wind noise of the air entering the drying cavity through the silencing structure 1 can be effectively reduced; in the scheme, the silencing structure is additionally arranged at the air inlet of the drying box body, so that noise in the drying cavity is effectively reduced, and noise at the air outlet of the roller is further reduced.
Preferably, as shown in fig. 1 to 9, the noise reduction structure further includes a fan 3, where the fan 3 is disposed at the rear end of the drying box 2 and is located in the drying cavity; the main function of the fan 3 is to increase the pressure difference in the drying cavity, so that the gas in the drying cavity can enter the air duct 4 through the rotation of the fan 3; further, a noise reduction plate is arranged at the air inlet of the fan 3, and is arranged in the drying cavity along the transverse direction (the transverse direction can be understood as being perpendicular to the flowing direction of the air in the drying cavity), so that the wind noise of the air flowing through the noise reduction plate and entering the fan 3 is reduced, and the flowing direction of the air is shown as an arrow p in fig. 1; one end of the air duct 4 is connected with an air outlet of the fan 3; in the scheme, the noise reduction plate is added at the air inlet of the fan 3 to reduce noise, so that wind noise entering the air duct is effectively reduced.
In the scheme, according to the noise reduction structure scheme of the drying air duct, the noise reduction structure is designed at the joint of the rear air duct of the heat pump washing and drying integrated machine or the dryer, so that when the existing heat pump washing and drying integrated machine or the dryer dehydrates at a high speed, the wind noise in the rear air duct is reduced when the wind noise is transmitted to the drying box body, the wind noise can be effectively reduced, and the experience of products is improved; according to the scheme provided by the invention, the noise reduction plate is added at the air inlet of the fan, so that the noise at the air inlet of the fan is reduced.
Preferably, as shown in fig. 1 to 9, the sound deadening structure employs a honeycomb type multi-channel sound deadening chamber; specifically, the sound deadening structure 1 includes a casing structure 15 and a plurality of sound deadening boxes 12; wherein, a silencing cavity is formed in the shell structure 15 and is used for accommodating the silencing box 12; specifically, as shown in fig. 9, the upper end face and the lower end face 122 of the silencing box 12 are sealing faces, and a plurality of silencing holes 121 are respectively formed in the side faces around the silencing box 12; further, as shown in fig. 8, a plurality of sound-deadening boxes 12 are arranged side by side in the sound-deadening chamber in the vertical direction (this vertical direction can be understood as the direction in which gas enters the sound-deadening chamber), and a dislocation space is formed between adjacent sound-deadening boxes 12 in the vertical direction at both the gas inlet 13 and the gas outlet 14, which dislocation space allows gas to enter the sound-deadening chamber through the gas inlet 13, to enter the sound-deadening boxes 12 through sound-deadening holes 121 on the dislocation space surface of the sound-deadening boxes 12, and to enter the adjacent sound-deadening boxes 12 along both sides in the sound-deadening boxes 12; at the same time, the offset distance allows the gas to flow out of the sound deadening holes 121 on the offset distance surface of the sound deadening box 12 at the gas outlet 14 after the gas is mutually impacted and offset by the sound deadening box 12.
In the scheme, through designing the silencing box with the multiple silencing boxes, the silencing boxes are arranged in the silencing cavity at intervals, the single silencing box is sealed front and back, gas and sound waves are transmitted through the silencing holes on the side edges of the silencing boxes, so that the gas enters the silencing boxes at the same time, and mutual impact counteraction is carried out among the gas, so that the silencing effect is achieved; the silencing structure is used for a rear air duct part of the heat pump washing and drying integrated machine or the dryer, and can solve the problem that gas in a roller directly and rapidly enters a compressor placement box through a corrugated pipe.
Preferably, as shown in fig. 1 to 9, the front end of the silencing box 12 is fixedly arranged at the air inlet 13 of the silencing cavity through a fixing plate 16, and the rear end of the silencing box 12 is fixedly arranged at the air outlet 14 of the silencing cavity through a fixing plate 17; screw holes 11 are arranged on the outer side of the port of the shell structure 15, so that one end of the shell structure 15 can be fixedly connected with the drying box body 2 through bolts; the other end of the shell structure 15 can be connected with a rear air duct of the washing and drying integrated machine or dryer through a corrugated hose; further, the silencing box 12 is a hollow cavity structure with two closed ends, the periphery of the silencing box is of a cuboid structure with small holes, the two ends of the silencing box 12 are respectively fixed on the fixing plates 16 and 17, the fixing plates 16 and 17 are fixed in the silencing cavity, wind in the rear air duct enters the silencing box 12 from the small holes on the periphery surface of the silencing box 12 at the air inlet end 13, and the purpose of noise reduction is achieved through gas diversion and mutual impact, and the flow direction of the gas is shown by an arrow in fig. 8.
Preferably, as shown in fig. 1 to 9, the noise reduction plate is a perforated plate including a first perforated plate 5 and a second perforated plate 6; specifically, the first perforated plate 5 and the second perforated plate 6 are arranged in the drying cavity side by side perpendicular to the flow direction of the gas and are positioned at the air inlet of the fan 3; specifically, the air inlet of the fan 3 cannot be completely plugged, so that the fan is burnt out; therefore, in order to reduce noise at the air inlet, the invention adopts a double-layer microperforated panel for silencing.
Preferably, as shown in fig. 1 to 9, the first perforated plate 5 and the second perforated plate 6 are clamped in the U-shaped groove of the inner wall of the drying box 2, so that the first perforated plate 5 and the second perforated plate 6 can reduce wind noise of gas through resonance sound absorption, and are installed and removed in directions.
Preferably, as shown in fig. 1 to 9, the perforated plate is provided with a plurality of perforations, and the diameter of the perforations is smaller than 1mm; further, the perforation ratio is less than 5% of the whole perforated plate, i.e. the perforation coverage over the whole perforated plate is less than 5%, so that the noise reduction efficiency of the perforated plate can be optimized.
Preferably, as shown in fig. 1 to 9, a heating assembly is disposed in the drying chamber, and the heating assembly may include a heating system including a compressor, an evaporator and a condenser, and a specific heating process of the heating system may be understood as an existing air conditioning heating system; further, the other end of the air duct 4 is communicated with a roller of the washing and drying integrated machine or the dryer, so that hot air in the air duct 4 can enter the roller for drying; in the scheme, the air enters the drying cavity through the silencing structure 1 to be heated, and enters the air duct 4 through the fan 3 to enter the roller to be dried, so that the drying purpose is achieved; because the fan is started, noise and gas sound emitted by the fan are transmitted from the air inlet of the fan 3; in the scheme provided by the invention, two perforated plates are added at the air inlet of the fan 3, the transmission of sound energy is reduced through resonance sound absorption of the perforated plates, and the first perforated plate 5 and the second perforated plate 6 are clamped in the U-shaped groove of the drying box body; through solving current cylinder air outlet, stoving box body, fan air intake noise big problem, reduction complete machine wind noise that can be very big promotes the product quality and experiences.
Example 2
Correspondingly, by combining the scheme, the invention also provides a heat pump washing and drying integrated machine which comprises a drying air duct noise reduction structure, wherein the drying air duct noise reduction structure is the drying air duct noise reduction structure; adopt above-mentioned stoving wind channel structure of making an uproar falls for the heat pump washes the noise of doing all-in-one less, can effectively improve the experience of heat pump washing the all-in-one and feel.
Example 3
Correspondingly, in combination with the scheme, the invention also provides a dryer which comprises a drying air duct noise reduction structure, wherein the drying air duct noise reduction structure is the drying air duct noise reduction structure; adopt above-mentioned stoving wind channel structure of making an uproar falls for the noise of drying-machine is littleer, can effectively improve the experience of drying-machine and feel.
The invention provides a noise reduction structure for a drying air duct, which aims at noise at the positions of a rear air duct of an existing heat pump washing and drying integrated machine or a rear air duct of a dryer and an air inlet of a fan, can effectively reduce wind noise of the heat pump washing and drying integrated machine or the dryer during drying or dehydration, reduce the sound power of the whole machine, improve the user experience, and enable products to have better competitiveness.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations may be made in the above embodiments by those skilled in the art without departing from the spirit and principles of the invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The noise reduction structure of the drying air duct is characterized by comprising a noise reduction structure (1), a drying box body (2) and an air duct (4); a drying cavity is formed in the drying box body (2), and the silencing structure (1) is arranged at the front end of the drying box body (2) and is positioned at an air inlet of the drying cavity; the silencing structure (1) reduces wind noise of the gas flowing through the silencing structure (1) and entering the drying cavity; the air duct (4) is arranged at an air outlet of the drying box body (2);
The silencing structure (1) comprises a shell structure (15) and a plurality of silencing boxes (12); a silencing cavity is formed in the shell structure (15); the upper end face and the lower end face of the silencing box (12) are respectively sealing surfaces, and a plurality of silencing holes are formed in the side face of the silencing box (12); the silencing boxes (12) are arranged in the silencing cavity side by side along the vertical direction, and dislocation spaces are formed between adjacent silencing boxes (12) at the air inlet (13) and the air outlet (14) along the vertical direction, so that air can enter the silencing boxes (12) through silencing holes in the dislocation spaces at the air inlet (13) and flow out of the silencing boxes (12) through silencing holes at the air outlet (14).
2. The drying air duct noise reduction structure according to claim 1, further comprising a fan (3), wherein the fan (3) is disposed at the rear end of the drying box body (2) and is located in the drying cavity; the air inlet of the fan (3) is provided with a noise reduction plate which is transversely arranged in the drying cavity, so that the wind noise of the air flowing through the noise reduction plate and entering the fan (3) is reduced; one end of the air duct (4) is connected with an air outlet of the fan (3).
3. The drying air duct noise reduction structure according to claim 2, wherein the front end of the noise reduction box (12) is fixedly arranged at the air inlet (13) of the noise reduction cavity through a first fixing plate (16); the rear end of the silencing box (12) is fixedly arranged at the air outlet (14) of the silencing cavity through a second fixing plate (17); one end of the shell structure (15) is fixedly connected with the drying box body (2) through a bolt, and the other end of the shell structure (15) can be connected with a rear air duct of the washing and drying integrated machine or the dryer through a corrugated hose.
4. The drying duct noise reduction structure according to claim 2, wherein the noise reduction plate is a perforated plate, the perforated plate comprising a first perforated plate (5) and a second perforated plate (6); the first perforated plate (5) and the second perforated plate (6) are arranged in the drying cavity side by side perpendicular to the flow direction of the gas and are positioned at the air inlet of the fan (3).
5. The drying air duct noise reduction structure according to claim 4, wherein the first perforated plate (5) and the second perforated plate (6) are clamped in a U-shaped groove on the inner wall of the drying box body (2); the first perforated plate (5) and the second perforated plate (6) reduce wind noise of the gas by resonance sound absorption.
6. The drying duct noise reduction structure according to claim 4 or 5, wherein the perforated plate is provided with a plurality of perforations, and the diameter of the perforations is smaller than 1mm; and/or, the perforation coverage of the plurality of perforations over the entire perforated plate is less than 5%.
7. The drying air duct noise reduction structure according to any one of claims 2 to 5, wherein a heating assembly is arranged in the drying cavity, and the other end of the air duct (4) is communicated with a drum of a washing and drying integrated machine or a dryer; the air enters the drying cavity through the silencing structure (1) to be heated, and enters the air duct (4) through the fan (3), so that the air enters the roller to be dried.
8. The heat pump washing and drying integrated machine comprises a drying air duct noise reduction structure, and is characterized in that the drying air duct noise reduction structure is the drying air duct noise reduction structure according to any one of claims 1 to 7.
9. A dryer comprising a drying duct noise reduction structure, characterized in that the drying duct noise reduction structure is the drying duct noise reduction structure according to any one of claims 1 to 7.
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| CN113106715B (en) * | 2021-04-16 | 2023-03-14 | 江苏友奥电器有限公司 | Air duct rear cover structure and heat pump dryer |
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| CN211815066U (en) * | 2019-12-30 | 2020-10-30 | 珠海格力电器股份有限公司 | Drying air duct noise reduction structure, heat pump washing and drying integrated machine and dryer |
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| KR100820151B1 (en) * | 2007-02-20 | 2008-04-08 | 엘지전자 주식회사 | Ductless dryer |
| JP2010069027A (en) * | 2008-09-19 | 2010-04-02 | Hitachi Appliances Inc | Dryer and washing-drying machine |
| CN202500832U (en) * | 2012-03-09 | 2012-10-24 | 威海鲁源科技环保设备有限公司 | Air blower silencer for stove |
| WO2014154251A1 (en) * | 2013-03-26 | 2014-10-02 | Arcelik Anonim Sirketi | Heat pump laundry dryer with noise attenuation structure |
| CN203717461U (en) * | 2013-12-24 | 2014-07-16 | 天津市永昌焊丝有限公司 | Muffler device of exhaust blower |
| CN109898308A (en) * | 2017-12-08 | 2019-06-18 | 无锡小天鹅股份有限公司 | Dryer and its cooling wind air inlet structure |
| CN109505808B (en) * | 2018-12-25 | 2024-02-20 | 广东美的白色家电技术创新中心有限公司 | Fan silencer and fan silencing system |
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