CN218763561U - Range hood decorative plate with vibration and sound absorption functions and range hood thereof - Google Patents
Range hood decorative plate with vibration and sound absorption functions and range hood thereof Download PDFInfo
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- CN218763561U CN218763561U CN202222637385.5U CN202222637385U CN218763561U CN 218763561 U CN218763561 U CN 218763561U CN 202222637385 U CN202222637385 U CN 202222637385U CN 218763561 U CN218763561 U CN 218763561U
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Abstract
A kitchen ventilator decorative plate with vibration and sound absorption functions and a kitchen ventilator thereof comprise a decorative plate main body, a sound absorption layer and a damping layer; the decorative plate main body at least comprises a left side plate, a front side plate and a right side plate which are connected, and the left side plate, the front side plate and the right side plate which are connected form a concave structure; the sound absorption layer is arranged on the inner surface of the concave structure, and the damping layer is arranged at the bottom of the concave structure; compared with the prior art, the sound absorption coating is arranged on the inner surface of the decorative plate main body, the composite material is adopted to have good sound insulation performance under the condition of having sound absorption performance, so that the whole sound absorption/insulation performance of the decorative plate main body is improved, the damping coating is arranged at the bottom of the decorative plate main body, so that the smoke collection plate is flexibly connected with the decorative plate main body, the vibration reduction performance of the decorative plate main body is improved, and meanwhile, the phenomenon of sound bridge generation and the influence on the sound absorption/insulation performance are avoided.
Description
Technical Field
The utility model relates to a lampblack absorber technical field, concretely relates to lampblack absorber decorative board and range hood with damping sound absorption function.
Background
The range hood is an essential kitchen appliance for a household kitchen, can quickly pump away waste burnt by a stove and oil smoke harmful to human bodies generated in the cooking process, discharge the oil smoke out of a room, condense and collect the oil smoke, reduce pollution and purify air; the conventional range hood forms negative pressure in an empty oil smoke region in a mechanical impeller forced exhaust mode, and is filtered, separated and exhausted outdoors through the range hood; the range hood generates an aerodynamic flow field in the operation process, meanwhile, aerodynamic noise and motor noise are generated, the larger the air quantity is, the larger the generated noise is, and negative emotions such as dysphoria and palpitation can occur to kitchen operators when the range hood is operated in a kitchen for a long time.
In the actual operation process of the range hood, a sound source can radiate noise outwards through the volute and the decorative plate, noise reduction measures such as sound absorption cotton are generally adopted at the inner side position of the volute to achieve the noise reduction effect, but the space of the volute and the actual operation need are limited, and the adopted noise reduction measures are limited, so that the sound absorption material is added on the decorative plate, the overall sound absorption and insulation performance of the volute and the decorative plate is enhanced, and the noise radiated outwards through the volute and the decorative plate is reduced.
For reducing the vibration that the motor operation produced in the spiral case passes through the decorative board in the external radiation noise of rigid connection of collection petticoat pipe, avoid producing the acoustic bridge phenomenon simultaneously, arrange the damping layer in the decorative board bottom, the acoustic bridge phenomenon is when two-layer plate of bilayer structure if there is rigid connection thing, the vibration that first layer board produced will pass to the second plywood through this rigid connection thing under the acoustic excitation, make the vibration of second plywood and external radiation sound wave, make the sound insulation performance of bilayer structure decline.
In the prior art, sound absorption cotton can be arranged on the inner side of the volute; meanwhile, other noise reduction measures are proposed in some patents, such as 'a range hood volute and range hood with a noise interference device' CN201821968928.9 'and' a range hood with a multi-layer flow guide noise filter device 'CN 201810772844.6'.
However, the measures adopted in the above two patents are to install sound-absorbing cotton on the inner side of the volute, so as to ensure that the sound-absorbing cotton does not affect the normal operation of the motor in the volute, and simultaneously ensure the flow space of the air flow field in the volute, and avoid disturbing the air flow field in the volute, the noise reduction measures adopted in the volute are limited.
SUMMERY OF THE UTILITY MODEL
The utility model relates to an overcome the defect among the above-mentioned prior art, provide one kind and reduce the vibration influence, avoid producing the lampblack absorber decorative board and the range hood that have the damping sound absorption function of sound bridge phenomenon.
In order to realize the purpose of the utility model, the utility model adopts the following technical scheme: a range hood decorative plate with vibration and sound absorption functions comprises a decorative plate main body, a sound absorption layer and a damping layer; the decorative plate main body at least comprises a left side plate, a front side plate and a right side plate which are connected, and the left side plate, the front side plate and the right side plate which are connected form a concave structure; the sound absorption layer is arranged on the inner surface of the concave structure, and the damping layer is arranged at the bottom of the concave structure.
As an optimized scheme of the utility model, the acoustic absorption layer evenly sets up in left side board, preceding curb plate and right side inboard surface.
As an optimized proposal of the utility model, the thickness of the sound absorption layer is 3mm-5mm.
As a preferred scheme of the utility model, the sound-absorbing coating that the acoustic absorption layer was spouted in proper order by a plurality of layers forms.
As an optimized proposal of the utility model, the thickness of the sound absorption coating is 0.8mm-1.2mm.
As an optimal scheme of the utility model, adopt the mode of spraying to be connected between the curb plate of sound absorption coating and decorative board main part.
As an optimized scheme of the utility model, the even cladding of damping layer is in left side board, preceding curb plate and right side board bottom.
As an optimized proposal of the utility model, the damping layer is formed by combining a plurality of layers of damping coatings which are sprayed in sequence.
As a preferred scheme of the utility model, the damping layer is sprayed outside the sound absorption layer of decorative board main part internal surface bottom.
A range hood comprises a range hood decorative plate.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the sound absorption coating is arranged on the inner surface of the decorative plate main body, and the composite material has good sound insulation performance under the condition of sound absorption performance, so that the whole sound absorption/sound insulation performance of the decorative plate main body is improved;
2. the damping coating is arranged at the bottom of the decorative plate main body, so that the smoke collecting plate is flexibly connected with the decorative plate main body, the vibration damping performance of the decorative plate main body is improved, and meanwhile, the phenomenon that an acoustic bridge is generated to influence the sound absorption/insulation performance is avoided.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a diagram illustrating the usage status of the present invention;
reference numerals: decorative board main part 1, left side board 11, preceding curb plate 12, right side board 13, acoustic absorber layer 2, damping layer 3, range hood 4, smoke-collecting plate 5.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the accompanying drawings.
As shown in fig. 1-2:
example 1: a lampblack absorber decorative plate with vibration and sound absorption functions comprises a decorative plate main body 1, a sound absorption layer 2 and a damping layer 3; the decorative plate main body 1 at least comprises a left side plate 11, a front side plate 12 and a right side plate 13 which are connected, and the left side plate 11, the front side plate 12 and the right side plate 13 which are connected enclose a concave structure; the sound absorption layer 2 is arranged on the inner surface of the concave structure, and the damping layer 3 is arranged at the bottom of the concave structure.
The sound absorption layer 2 is uniformly arranged on the inner surfaces of the left side plate 11, the front side plate 12 and the right side plate 13, and the area of the sound absorption layer 2 is consistent with the inner surface area of the left side plate 11, the front side plate 12 and the right side plate 13, so that the inner surfaces of the left side plate 11, the front side plate 12 and the right side plate 13 are completely and uniformly covered.
The thickness of the sound absorption layer 2 is 3mm-5mm, the thickness of the sound absorption layer 2 is designed according to the size of the actual range hood 4, and the range hood 4 with larger size is correspondingly suitable for the thicker sound absorption layer 2.
The sound absorption layer 2 is formed by combining a plurality of layers of sound absorption coatings which are sprayed in sequence, the thickness of a single layer of sound absorption coating is 0.8mm-1.2mm, and the sound absorption coating is connected with the side plate of the decorative plate main body 1 in a spraying mode.
The sound absorption coating is uniformly covered on the inner surface of the whole decorative plate main body 1 through a compressor spray gun, a plurality of layers of sound absorption coating are sprayed layer by layer in the spraying process, and the next layer of sound absorption coating can be sprayed after one layer of sound absorption coating is sprayed.
The sound absorption coating comprises the following components: the sound absorption coating mainly comprises two parts of fiber and water, and also comprises additives such as a flame retardant, a mildew preventive, a moisture preventive and the like, wherein the fiber is mainly plant fiber, and mineral fiber is not recommended.
The damping layer 3 is evenly coated at the bottom of the left side plate 11, the front side plate 12 and the right side plate 13, the damping layer 3 is formed by combining a plurality of layers of damping paint which are sprayed in sequence, and the damping layer 3 is sprayed outside the sound absorption layer 2 at the bottom of the inner surface of the decorative plate main body 1.
The damping coating is uniformly covered at the bottom of the whole decorative board main body 1 through a compressor spray gun, a plurality of layers of damping coating are sprayed layer by layer in the spraying process, the next layer of damping coating can be sprayed after one layer of damping coating is sprayed, and the number of layers of the damping coating is set as required.
The damping paint is sprayed on the inner surface, the outer surface and the lower surface of the bottom of the decorative board main body 1 at the same time, so that the bottom of the decorative board main body 1 is sprayed in a coating manner under the action of the damping paint.
The damping coating comprises the following components: the damping paint consists of base material, stuffing and solvent as well as fire retardant. Wherein the base material takes damping paint as a main component, and the base material suitable for the patent comprises chloroprene rubber, olefine acid ester and the like; the filler is used for increasing the internal loss capacity of the damping material, and the filler suitable for the damping material comprises expanded perlite powder, expanded vermiculite, asbestos wool, calcium carbonate, copper disulfide and the like; the solvent is used for dissolving the base material, and preferably adopts nontoxic and harmless solvents, and commonly comprises ethyl acetate, butyl acetate and the like.
In the actual use process, when sound meets an obstacle in a transmission path, the sound can have the phenomena of reflection, transmission, diffraction and the like, wherein the transmission and the reflection of the sound are reduced according to the characteristics of materials in the reflection and the transmission, so that the acoustic transmission and the blocking effect are realized on a sensitive point behind the obstacle; the stiffness, the areal density and the internal resistance of the material determine the sound insulation performance of the barrier, namely the transmission of sound is influenced; the structural characteristics of the material (such as the surface roughness of the material and the size and distribution of pores in the material) determine the sound absorption performance of the barrier, namely, the reflectivity of sound is influenced; the geometrical dimensions of the material determine the shielding properties of the obstacles, i.e. influence the diffraction properties of the sound.
When the medium is the sound absorption coating, when sound waves are transmitted in the sound absorption coating, the sound waves are gradually attenuated along with the increase of the transmission distance due to the friction generated by the vibration of particles of the sound absorption coating and the loss of the sound energy converted into heat energy.
The damping coating is combined to form a flexible material, so that the smoke collecting plate 5 is flexibly connected with the shell of the range hood 4, and the external force is buffered through the damping coating under the condition that the smoke collecting plate 5 is subjected to the external force, so that the force transmitted to the shell of the range hood 4 is reduced, the generation of a sound bridge phenomenon is avoided, and the damping coating can also be made of corresponding rubber and silica gel materials.
Example 2: the sound absorption coating can also be replaced by sound absorption materials with porous structures and resonance sound absorption structures.
The sound absorption material with the porous structure can be sound absorption cotton or other sound absorption materials with the porous structure, and in the actual use process, the more complex the porous structure of the sound absorption material is (namely, the more the types of the hole intervals are, the more the pore sizes are, and the more irregular the arrangement is), the better the sound absorption performance is, and meanwhile, the thicker the thickness of the sound absorption material is, the better the sound absorption performance of the low-frequency band is.
The resonance sound absorption structure comprises a single layer, multiple layers, micro-perforated holes, a thin plate and other resonance sound absorption structures, and has good sound absorption performance on low-frequency noise.
The sound absorption material with the porous structure and the resonance sound absorption structure are combined, so that broadband noise is mainly solved, and the sound absorption effect on high-frequency and low-frequency noise is good.
The utility model provides a range hood, including the lampblack absorber decorative board, decorative board main part 1 whole cover is established in the casing outside of range hood 1, when decorative board main part 1 is installed on range hood 1's casing, the opening direction of concave structure is towards the rear of casing, the adsorbed on the casing of acoustic absorption layer 2 of concave structure internal surface this moment, and 3 bottoms on damping layer contact with smoke collection board 5, thereby the vibration of receiving decorative board main part 1 is warm towards, avoid decorative board main part 1 to produce the acoustic bridge phenomenon.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Although the reference numerals in the figures are used more here: the terms of the decorative plate main body 1, the left side plate 11, the front side plate 12, the right side plate 13, the sound absorption layer 2, the damping layer 3, the range hood 4, the smoke collecting plate 5 and the like do not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
Claims (10)
1. A range hood decorative plate with vibration and sound absorption functions is characterized by comprising a decorative plate main body (1), a sound absorption layer (2) and a damping layer (3); the decorative plate main body (1) at least comprises a left side plate (11), a front side plate (12) and a right side plate (13) which are connected, and the left side plate (11), the front side plate (12) and the right side plate (13) which are connected enclose a concave structure; the sound absorption layer (2) is arranged on the inner surface of the concave structure, and the damping layer (3) is arranged at the bottom of the concave structure.
2. The range hood decorative plate with the vibration and sound absorption functions as claimed in claim 1, wherein the sound absorption layer (2) is uniformly arranged on the inner surfaces of the left side plate (11), the front side plate (12) and the right side plate (13).
3. The range hood decorative plate with the vibration and sound absorption functions as claimed in claim 2, wherein the sound absorption layer (2) is 3mm-5mm thick.
4. The range hood decorative plate with the vibration and sound absorption functions as claimed in claim 1, wherein the sound absorption layer (2) is formed by combining a plurality of layers of sound absorption coatings sprayed in sequence.
5. The range hood decorative plate with the vibration and sound absorption functions as claimed in claim 4, wherein the thickness of the single layer of the sound absorption coating is 0.8mm-1.2mm.
6. A range hood decorative plate with vibration and sound absorption functions as claimed in claim 5, wherein the sound absorption coating is connected with the side plate of the decorative plate main body (1) in a spraying mode.
7. A range hood decorative plate with vibration and sound absorption functions as claimed in claim 1, wherein the damping layer (3) is uniformly coated at the bottom of the left side plate (11), the front side plate (12) and the right side plate (13).
8. A range hood decorative plate with vibration and sound absorption functions as claimed in claim 7, wherein the damping layer (3) is formed by combining a plurality of layers of damping paint sprayed in sequence.
9. A range hood decorative plate with vibration and sound absorption functions as claimed in claim 1, wherein the damping layer (3) is sprayed outside the sound absorption layer (2) at the bottom of the inner surface of the decorative plate body (1).
10. A range hood, characterized by comprising the range hood decorative plate of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222637385.5U CN218763561U (en) | 2022-10-09 | 2022-10-09 | Range hood decorative plate with vibration and sound absorption functions and range hood thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222637385.5U CN218763561U (en) | 2022-10-09 | 2022-10-09 | Range hood decorative plate with vibration and sound absorption functions and range hood thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218763561U true CN218763561U (en) | 2023-03-28 |
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ID=85697269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222637385.5U Active CN218763561U (en) | 2022-10-09 | 2022-10-09 | Range hood decorative plate with vibration and sound absorption functions and range hood thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218763561U (en) |
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- 2022-10-09 CN CN202222637385.5U patent/CN218763561U/en active Active
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