CN217467982U - Wall-mounted household appliance and noise reduction device thereof - Google Patents
Wall-mounted household appliance and noise reduction device thereof Download PDFInfo
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- CN217467982U CN217467982U CN202221067339.XU CN202221067339U CN217467982U CN 217467982 U CN217467982 U CN 217467982U CN 202221067339 U CN202221067339 U CN 202221067339U CN 217467982 U CN217467982 U CN 217467982U
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Abstract
The utility model relates to a household electrical appliances field provides a device and wall-hanging domestic appliance of making an uproar falls of wall-hanging domestic appliance, the device of making an uproar falls of wall-hanging domestic appliance includes: the noise reduction device comprises a main shell, a noise reduction cavity is arranged in the main shell, a back plate of the main shell is used for being mounted on a wall, and one end, away from the back plate, of the noise reduction cavity is open; the panel is arranged at the open end of the main shell and is provided with a silencing hole communicated to the silencing cavity; the thickness of the noise reduction device is A, and the requirements are as follows: a is less than or equal to 20 mm. The utility model discloses a device of making an uproar falls in wall-hanging domestic appliance, through the structure in porous amortization chamber, can realize the multiple reflection of noise to the energy of low frequency noise provides quieter operational environment in consuming, and should fall the device direct mount of making an uproar and do not have the influence in wall-hanging domestic appliance's thickness basically.
Description
Technical Field
The utility model relates to a household electrical appliances technical field especially relates to a device and wall-hanging domestic appliance of making an uproar falls of wall-hanging domestic appliance.
Background
Because the wall-mounted household appliance does not occupy the indoor floor space, the wall-mounted household appliance is applied to a plurality of products, such as a wall-mounted gas water heater, a wall-mounted dehumidifier, a wall-mounted closestool and the like. Because of factors such as pleasing to the eye, wall-hanging domestic appliance sets up air intake or other openings at the back usually for wall-hanging domestic appliance's noise at work can outwards propagate from this department, and through the reflection of wall again, can produce great noise, brings not good experience to the activity near wall-hanging domestic appliance people.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a device of making an uproar falls in wall-hanging domestic appliance can realize the multiple reflection of noise, consumes the reflection energy that low frequency noise passes through the wall.
The utility model discloses still provide a wall-hanging electrical apparatus.
According to the utility model discloses wall-hanging domestic appliance's the device of making an uproar that falls of first aspect embodiment, include:
the noise reduction device comprises a main shell, a noise reduction cavity is arranged in the main shell, a back plate of the main shell is used for being mounted on a wall, and one end, away from the back plate, of the noise reduction cavity is open;
the panel is arranged at the open end of the main shell and is provided with a silencing hole communicated to the silencing cavity;
the thickness of the noise reduction device is A, and the requirements are as follows: a is less than or equal to 20 mm.
According to the utility model discloses wall-hanging domestic appliance's the device of making an uproar of falling through the structure in porous amortization chamber, can realize the multiple reflection of noise to the energy of low frequency noise in the consumption provides quieter operational environment, and should fall the device direct mount of making an uproar and do not have the influence to wall-hanging domestic appliance's thickness basically.
According to the utility model discloses an embodiment, the amortization chamber is followed the degree of depth of the direction of panel normal is D, the panel thickness is H, the flow cross-sectional area of amortization hole is S, the porosity of panel is P, satisfies:
5mm≤D＜20mm，0.5mm≤H≤5mm，0.3mm 2 ≤S≤10mm 2 ，0.1％≤P≤2％。
according to the utility model discloses an embodiment, the amortization chamber is a plurality of, and is a plurality of along the perpendicular to the amortization chamber the direction of panel normal distributes, every the amortization chamber all corresponds and is linked together the amortization hole.
According to the utility model discloses an embodiment, the panel includes in order around a plurality of regions of distribution, at least two the region corresponds the noise damping chamber the flow cross-sectional area of noise damping hole with at least one kind is different in the porosity of region.
According to the utility model discloses an embodiment, it is a plurality of the amortization chamber is the array and arranges, every the amortization chamber correspondence has a plurality of that are the array and arrange the amortization hole.
According to an embodiment of the invention, at least one surface of the panel is provided with a sound absorbing layer.
According to an embodiment of the invention, the main housing and at least one of the panels are provided with a reinforcing rib.
According to the utility model discloses wall-hanging domestic appliance of second aspect embodiment includes:
the back of the main machine is provided with an air port;
the noise reduction device as in any one of the above, wherein the air opening faces the panel.
According to the utility model discloses wall-hanging domestic appliance, the noise at work of host computer can be absorbed by the device of making an uproar of falling when outwards propagating through the wind gap, prevents wall reflection noise, provides quieter operational environment.
According to an embodiment of the present invention, the number of the silencing chambers is plural, the plural silencing chambers are distributed along a direction perpendicular to the normal line of the panel, and each silencing chamber corresponds to the silencing hole communicated with each other; the panel comprises a plurality of areas which are sequentially distributed in a surrounding way, and at least one of the volume of the sound-deadening cavity, the flow cross section of the sound-deadening hole and the porosity of the areas which correspond to at least two of the areas is different; the tuyere is directed toward a central region among the plurality of regions.
According to the utility model discloses an embodiment, the panel is including encircleing a plurality of regions that distribute in order, at least two the noise cancelling frequency that the region corresponds is different, the wind gap orientation central zone in a plurality of regions.
According to the utility model discloses an embodiment, the host computer is in the projected area of wall is S1, the panel is in the projected area of wall is S2, the host computer is in the projection of wall with the panel is in the projected area of coincidence region of wall is S3, satisfies:
50％≤S2/S1≤200％，S3/S1≥50％。
the embodiment of the utility model provides an in above-mentioned one or more technical scheme, one of following technological effect has at least:
through the structure of the porous sound-deadening cavity, the multiple reflection of noise can be realized, so that the energy of low-frequency and medium-frequency noise is consumed, a quieter working environment is provided, and the noise reduction device is directly arranged on a wall and basically has no influence on the thickness of a wall-mounted household appliance.
Furthermore, by designing a surrounding type multi-partition silencing structure, the noise of each frequency needs to pass through each partition, so that the noise of each frequency can be attenuated.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a noise reduction device for a wall-mounted household appliance according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a wall-mounted household appliance according to an embodiment of the present invention;
fig. 3 is a schematic view illustrating noise transmission when a wall-mounted household appliance is mounted on a wall according to an embodiment of the present invention;
fig. 4 is a schematic sectional view of a panel in a wall-mounted household appliance according to an embodiment of the present invention;
fig. 5 is a schematic projection diagram of a host and a noise reduction device in a wall-mounted household appliance according to an embodiment of the present invention.
Reference numerals:
the noise reduction device 100, a main shell 110, a silencing cavity 111, a panel 120, a silencing hole 121, a host 200, an air port projection 201 and a wall 300.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only used for convenience of description and simplification of the description of the embodiments of the present invention, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the embodiments of the present invention can be understood in specific cases by those skilled in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
A noise reduction device 100 for a wall-mounted household appliance according to an embodiment of the present invention is described below with reference to fig. 1 to 5.
As shown in fig. 2 and 3, the noise reduction device 100 of the embodiment of the present invention is suitable for being installed at the rear of the main unit 200 of the wall-mounted household appliance, for absorbing the backward-propagating operating noise of the main unit 200, and reducing the operating noise to be reflected everywhere indoors through the wall 300.
As shown in fig. 1 and 2, the noise reduction apparatus 100 of a wall-mounted home appliance includes: a main housing 110 and a face plate 120.
The main housing 110 is provided with a sound damping cavity 111 therein, the back plate of the main housing 110 is used for being mounted on a wall 300, for example, the back plate of the main housing 110 can be fixed on the wall 300 by gluing, screw connection, rivets, etc., one end of the sound damping cavity 111 departing from the back plate is open, and one end of the sound damping cavity 111 departing from the back plate is the front end of the main housing 110.
The main housing 110 may be a box-shaped structure with an open front end, and the specific shape of the main housing 110 may be determined according to the shape of the host 200, for example, the main housing 110 in fig. 1-2 is a rectangular box-shaped structure adapted to the host 200 with a rectangular back surface, or when the host 200 is circular, the main housing 110 may be a cylindrical box-shaped structure.
For example, for a gas water heater, the main housing 110 is a generally rectangular parallelepiped box-shaped structure; for a circular wall-mounted dryer, the main housing 110 has a cylindrical box-like structure.
The main housing 110 may be made of plastic, resin, metal plate, or ceramic, or the main housing 110 may be made of a composite material, the inner surface of the main housing 110 may be a non-smooth surface to enhance the sound absorption effect, and the inner surface of the main housing 110 may be coated with a sound attenuation coating.
As shown in fig. 1 to 2, the panel 120 is installed at the open end of the main housing 110, the panel 120 is installed at the front end of the main housing 110, and the panel 120 can be connected to the main housing 110 by various means, such as glue, screw connectors, rivets, and snaps, and thus the installation is simple and has no influence on the house structure.
An acoustic insulating pad may be interposed between the panel 120 and the main case 110 to prevent noise from being transmitted outward from a gap between the panel 120 and the main case 110.
When the noise reducer 100 is mounted in a mated state with the main unit 200, the panel 120 faces the back surface of the main unit 200.
As shown in fig. 1, the panel 120 is provided with a plurality of sound-deadening holes 121, the sound-deadening holes 121 are communicated to the sound-deadening chamber 111, and the sound-deadening chamber 111 is communicated with the outside through the sound-deadening holes 121.
The muffling hole 121 may be circular, triangular, or square.
The panel 120 may be made of plastic, resin, or sheet metal, or the panel 120 may be made of a composite material.
The thickness of the noise reducer 100 is A, and satisfies the following conditions: a is less than or equal to 20 mm. For example, the noise reducer 100 has a thickness of 15 mm.
It can be understood that, in the actual use process, the noise reduction device 100 is installed between the wall 300 and the main body 200, and the thickness of the whole wall-mounted household appliance protruding from the wall 300 is less affected by the thickness of the noise reduction device 100.
When the wall-mounted household appliance works, the host 200 can generate working noise, particularly, air openings are formed in the rear ends of the host 200, the working noise inside the host 200 can be outwards transmitted through the air openings, when the working noise is transmitted backwards, the silencing cavity 111 can be transmitted through the silencing holes 121, and the energy of the noise is consumed through multiple reflection in the silencing cavity 111.
For example to the low frequency noise that gas heater during operation produced, sound absorbing material such as soundproof cotton in the correlation technique all is difficult to effectively, the utility model discloses the device 100 of making an uproar falls through the cooperation bloop 121 in bloop chamber 111, can absorb low frequency noise, if other structures of recombination absorb medium-high frequency noise, then can realize making an uproar well relatively.
According to the utility model discloses wall-hanging domestic appliance's the device of making an uproar 100 falls, through the structure in porous amortization chamber 111, can realize the multiple reflection of noise to the energy of low frequency noise in the consumption provides quieter operational environment, and should fall the device of making an uproar 100 direct mount in wall 300, basically has no influence to wall-hanging domestic appliance's thickness.
In some embodiments, the depth of the muffling cavity 111 along the normal of the panel 120 is D, the thickness of the panel 120 is H, the flow cross-sectional area of the muffling hole 121 is S, and the porosity of the panel 120 is P, which satisfy:
5mm≤D＜20mm，0.5mm≤H≤5mm，0.3mm 2 ≤S≤10mm 2 ，0.1％≤P≤2％。
the specific values of the above parameters can be determined by combining the noise frequency characteristics of the host 200, for example, D is 15mm, H is 2mm, and S is 3mm 2 And P is 0.3%, and the noise reduction device 100 has a good absorption effect on medium and low frequency noise near 400 Hz.
In some embodiments, the sound-deadening chamber 111 is provided in a plurality, the plurality of sound-deadening chambers 111 are distributed along a direction perpendicular to the normal line of the panel 120, and each sound-deadening chamber 111 corresponds to a sound-deadening hole 121 communicated with each other.
The sound-deadening chambers 111 may be spaced apart from each other, and adjacent sound-deadening chambers 111 are physically partitioned by a wall in the main housing 110.
Each of the muffling cavities 111 may have a rectangular parallelepiped shape, or a spherical shape, or a hexagonal prism, or a triangular pyramid, or other shapes, and the area of the main housing 110 where the muffling cavities 111 are not located may have a thin-walled structure, so as to reduce the weight of the noise reduction apparatus 100.
Thus, under the condition that the volume of the noise reduction device 100 is fixed, the volume of the sound attenuation cavity 111 is smaller, noise can be reflected on the inner wall of the sound attenuation cavity 111 more times, and noise in each area can be transmitted into the sound attenuation cavity 111 through the corresponding sound attenuation holes 121, so that the noise reduction effect is better.
In some embodiments, the plurality of sound-deadening chambers 111 are arranged in an array, for example, the plurality of sound-deadening chambers 111 are arranged in an array along a direction perpendicular to a normal of the panel 120, and each sound-deadening chamber 111 corresponds to a plurality of sound-deadening holes 121 arranged in an array. Thus, a relatively large number of sound-deadening chambers 111 and sound-deadening holes 121 are present in each region, and multi-region sound deadening can be realized.
In some embodiments, the panel 120 includes a plurality of regions sequentially distributed around the panel, at least two regions corresponding to different at least one of the volume of the muffling chamber 111, the flow cross-section of the muffling orifice 121, and the porosity of the regions.
When the noise reduction device 100 is assembled with the main body 200, the noise of each frequency of the tuyere of the main body 200 facing the central area of the plurality of areas needs to pass through each partition, so that the noise of each frequency can be attenuated.
As shown in fig. 4, the panel 120 includes a first section U1, a second section U2, and a third section U3, the first section U1 may be circular, oval, rectangular, etc., the second section U2 surrounds the first section U1, and the third section U3 surrounds the second section U2.
At least two of the three partitions have different silencing frequencies, for example, the silencing frequencies corresponding to the three partitions are different pairwise.
In other words, there are at least two sound-deadening chambers 111 which differ in at least one of the parameters of the three following: the volume of the sound-deadening chamber 111, the flow cross-sectional area of the sound-deadening holes 121, and the density of the sound-deadening holes 121 corresponding to the sound-deadening chamber 111.
It is understood that the first section U1 is opposite to the air outlet of the wall-mounted household appliance, and as shown in fig. 4, the air outlet projection 201 is located in the first section U1.
Like this from wind gap outside noise of propagating pass through first subregion U1, second subregion U2 and third subregion U3 in order, first subregion U1, second subregion U2 and third subregion U3 are to the different grade type resonance subcavities of wall-hanging domestic appliance different noise peak value frequency channel design for radiation noise passes through all kinds of units absorption in proper order in the outside transmission process, realizes the noise attenuation of each frequency channel, reaches the effect of sound absorption and noise reduction.
Taking a wall-mounted household appliance as an example of a gas water heater, the noise sources of the normal work of the gas water heater include: combustion noise, fan noise, gas injection noise, mechanical vibration noise, water flow noise, and the like. The combustion noise has obvious low frequency characteristic, and the penetrability is strong, and fan and water pump noise have obvious high frequency characteristic, and sharp-pointed harsh, the sense of hearing is felt poorly. Through the many subregion amortization structures of design surrounding type for the noise of each frequency all need pass through each subregion, and the noise homoenergetic of each frequency is attenuated like this.
In some embodiments, at least one surface of the panel 120 is provided with a sound absorbing layer. The sound absorbing layer may be made of sound attenuating materials, including but not limited to: foam, sponge, porous coating, which enhances the absorption of high frequency noise by the noise reducer 100.
For example, the front surface of the panel 120 may be provided with foam; alternatively, the rear surface of the panel 120 may be provided with foam; or the front surface and the rear surface of the panel 120 are both provided with foam; alternatively, the sides of the panel 120 may be provided with foam.
In some embodiments, the main housing 110 may be provided with a plurality of reinforcing ribs, which may be integrally formed with the main housing 110, and the plurality of reinforcing ribs may intersect with each other, for example, the plurality of reinforcing ribs may be in a grid shape, or the plurality of reinforcing ribs may be arranged in parallel and spaced apart. The reinforcing ribs may enhance the strength of the main housing 110. The reinforcing ribs may be provided on the inner wall of the main housing 110 so as not to affect the external shape, and of course, the reinforcing ribs may be provided on the outer wall.
Of course, the strength of the main housing 110 may be increased by other methods, including local thickening.
In some embodiments, the panel 120 may be provided with a plurality of ribs, the ribs may be integrally formed with the panel 120, and the plurality of ribs may intersect with each other, for example, the plurality of ribs may be in a grid shape, or the plurality of ribs may be arranged in parallel and spaced apart. The reinforcing ribs may enhance the strength of the panel 120. The reinforcing beads may be provided on the front surface or the rear surface of the panel 120.
Of course, the strength of the panel 120 may be increased by other means, including local thickening.
The embodiment of the utility model provides a wall-hanging domestic appliance is still provided.
As shown in fig. 2 and 3, the wall-mounted home appliance includes a main unit 200 and a noise reduction device 100.
The back of the main body 200 has an air opening facing the panel 120 of the noise reducer 100.
The air inlet can be an air inlet or an air outlet.
Thus, the operation noise of the main body 200 can be absorbed by the noise reduction device 100 when propagating outward through the air opening, preventing the wall 300 from reflecting the noise, and providing a quieter operation environment.
The main unit 200 of the wall-mounted home appliance may be a gas water heater, a wall-mounted dehumidifier, a wall-mounted toilet, etc.
In some embodiments, the panel 120 includes a plurality of regions sequentially distributed around the panel, at least two regions have different muffling frequencies, and the tuyere faces a central region of the plurality of regions.
The different sound attenuation frequencies corresponding to the at least two areas comprise: at least one of the volume of the sound-deadening chamber 111, the flow cross-sectional area of the sound-deadening hole 121, and the porosity of the region is different for at least two regions.
When the noise reduction device 100 is assembled with the main body 200, the noise of each frequency of the tuyere of the main body 200 facing the central area of the plurality of areas needs to pass through each partition, so that the noise of each frequency can be attenuated.
As shown in fig. 4, the panel 120 includes a first section U1, a second section U2, and a third section U3, the first section U1 may be circular, oval, rectangular, etc., the second section U2 surrounds the first section U1, and the third section U3 surrounds the second section U2.
At least two of the three partitions have different silencing frequencies, for example, the silencing frequencies corresponding to the three partitions are different pairwise.
In other words, there are at least two sound-deadening chambers 111 which differ in at least one of the parameters of the three following: the volume of the sound-deadening chamber 111, the flow cross-sectional area of the sound-deadening holes 121, and the density of the sound-deadening holes 121 corresponding to the sound-deadening chamber 111.
It is understood that the first section U1 is opposite to the air outlet of the wall-mounted household appliance, and as shown in fig. 4, the air outlet projection 201 is located in the first section U1.
Like this from wind gap outside noise of propagating pass through first subregion U1, second subregion U2 and third subregion U3 in order, first subregion U1, second subregion U2 and third subregion U3 are to the different grade type resonance subcavities of wall-hanging domestic appliance different noise peak value frequency channel design for radiation noise passes through all kinds of units absorption in proper order in the outside transmission process, realizes the noise attenuation of each frequency channel, reaches the effect of sound absorption and noise reduction.
In some embodiments, as shown in fig. 5, the projection area of the host 200 on the wall 300 is S1, the projection area of the panel 120 on the wall 300 is S2, and the area of the overlapping region of the projection of the host 200 on the wall 300 and the projection of the panel 120 on the wall 300 is S3, which satisfies: S2/S1 is more than or equal to 50% and less than or equal to 200%, and S3/S1 is more than or equal to 50%. For example, S2/S1 is 100%, and S3/S1 is 100%.
In the actual production and installation process, the size of the noise reduction device 100 can be determined according to the actual situation of noise, so as to achieve better noise elimination and reduction effects.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
The above embodiments are merely illustrative, and not restrictive, of the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent substitutions may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all of the technical solutions should be covered by the scope of the claims of the present invention.
Claims (10)
1. A noise reduction device for a wall-mounted household appliance, comprising:
the noise reduction device comprises a main shell, a noise reduction cavity is arranged in the main shell, a back plate of the main shell is used for being mounted on a wall, and one end, away from the back plate, of the noise reduction cavity is open;
the panel is arranged at the open end of the main shell and is provided with a silencing hole communicated to the silencing cavity;
the thickness of the noise reduction device is A, and the requirements are met: a is less than or equal to 20 mm.
2. The wall-mounted household appliance noise reduction device according to claim 1, wherein the depth of the muffling cavity in the direction of the normal line of the panel is D, the thickness of the panel is H, the cross-sectional flow area of the muffling hole is S, and the porosity of the panel is P, so that the requirements are met:
5mm≤D＜20mm，0.5mm≤H≤5mm，0.3mm 2 ≤S≤10mm 2 ，0.1％≤P≤2％。
3. the wall-mounted household appliance noise reduction device according to claim 1, wherein the noise reduction cavities are distributed along a direction perpendicular to a normal line of the panel, and each noise reduction cavity is corresponding to the noise reduction hole communicated with the noise reduction cavity.
4. The wall-mounted household appliance noise reduction device according to claim 3, wherein the panel comprises a plurality of regions sequentially distributed around the panel, and at least one of the volume of the sound-deadening chamber, the flow cross-sectional area of the sound-deadening hole and the porosity of the regions is different for at least two of the regions.
5. The wall-mounted household appliance noise reduction device according to claim 3, wherein the plurality of sound-deadening chambers are arranged in an array, and each sound-deadening chamber corresponds to the plurality of sound-deadening holes arranged in the array.
6. A wall-mounted household appliance noise reduction apparatus according to any one of claims 1 to 5, wherein at least one surface of the panel is provided with a sound absorbing layer.
7. The wall-hung household appliance noise reduction device according to any one of claims 1 to 5, wherein at least one of the main housing and the panel is provided with a reinforcing rib.
8. A wall-mounted household appliance, comprising:
the back of the main machine is provided with an air port;
the noise reducing device of any of claims 1-7, the air opening being directed towards the panel.
9. The wall hanging type household appliance according to claim 8, wherein the panel comprises a plurality of areas sequentially distributed around the panel, at least two of the areas have different sound attenuation frequencies, and the air opening faces to a central area of the areas.
10. The wall-mounted household appliance according to claim 8, wherein the projection area of the host on the wall is S1, the projection area of the panel on the wall is S2, and the area of the overlapping area of the projection of the host on the wall and the projection of the panel on the wall is S3, so that:
50％≤S2/S1≤200％，S3/S1≥50％。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202221067339.XU CN217467982U (en) | 2022-05-06 | 2022-05-06 | Wall-mounted household appliance and noise reduction device thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221067339.XU CN217467982U (en) | 2022-05-06 | 2022-05-06 | Wall-mounted household appliance and noise reduction device thereof |
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| CN217467982U true CN217467982U (en) | 2022-09-20 |
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| CN202221067339.XU Active CN217467982U (en) | 2022-05-06 | 2022-05-06 | Wall-mounted household appliance and noise reduction device thereof |
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