CN214223195U

CN214223195U - Noise reduction assembly and range hood using same

Info

Publication number: CN214223195U
Application number: CN202022672209.6U
Authority: CN
Inventors: 罗家胜; 潘叶江
Original assignee: Vatti Co Ltd
Current assignee: Vatti Co Ltd
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-09-17
Anticipated expiration: 2030-11-18

Abstract

The utility model discloses a fall subassembly of making an uproar and use its range hood, wherein, fall the subassembly of making an uproar and include that first micropore wears the board, the board is worn to the second micropore, first micropore wears the board and the board is worn to the second micropore from the inside to stacking in proper order outside and set up on the inner wall of the wind cabinet casing in range hood, first micropore wears to form the first cavity of making an uproar that falls between board and the board is worn to the second micropore, the second micropore is worn to form the second between board and the wind cabinet casing and is fallen the cavity of making an uproar for fall the wind range hood and make an uproar. The utility model discloses a set up first micropore and wear the board with the second micropore on the inner wall of range hood medium wind cabinet casing, and wear between board and the second micropore at first micropore and wear to form respectively between board and the wind cabinet casing first fall the cavity of making an uproar and fall the cavity of making an uproar with the second, make like this whole subassembly of making an uproar be double-deck resonance sound-absorbing structure, can obtain wideer sound absorption frequency band, make the effect of making an uproar is better to the sound absorption.

Description

Noise reduction assembly and range hood using same

Technical Field

The utility model belongs to the technical field of range hood, concretely relates to subassembly of making an uproar and use its range hood falls.

Background

In order to reach the purpose of noise reduction among the current range hood, mostly adopt the panel setting that combines together perforated plate and porous sound absorbing material on the wind cabinet shell, fall the noise processing to range hood, but this kind of noise reduction subassembly inhale the sound frequency band narrower, noise reduction effect is very unsatisfactory.

SUMMERY OF THE UTILITY MODEL

In view of this, the main object of the present invention is to provide a noise reduction assembly, which solves the problems of narrow sound absorption band and unsatisfactory noise reduction effect of the noise reduction assembly in the prior art.

The utility model aims at providing a range hood of using above-mentioned subassembly of making an uproar falls is still provided.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this: the utility model provides a subassembly of making an uproar falls for range hood, wears the board including first micropore, second micropore, first micropore is worn the board and the board is worn to the second micropore and is piled up the inner wall of setting up the wind cabinet casing in range hood from inside to outside in proper order on, first micropore is worn to form the first cavity of making an uproar that falls between board and the second micropore is worn to form the second between board and the wind cabinet casing and is fallen the cavity of making an uproar for fall the noise to wind range hood.

Preferably, the first and second microperforation plates are both profiled microperforation plates.

Preferably, the thickness of the first micropore threading plate and the thickness of the second micropore threading plate are both 0.7-0.9 mm.

Preferably, micropores are arranged on the first micropore threading plate and the second micropore threading plate, and the diameters of the micropores are both 0.6-0.8 mm.

Preferably, the perforation rate of the first microporous perforated plate is 2-3%.

Preferably, the perforation rate of the second microporous perforated plate is 1.5-2%.

Preferably, the height of the first noise reduction cavity is less than the height of the second noise reduction cavity.

Preferably, the height of the first noise reduction cavity is 7-9 mm.

Preferably, the height of the second noise reduction cavity is 11-13 mm.

The utility model discloses a another technical scheme is realized like this: the oil fume suction device comprises a range hood body and the noise reduction assembly, wherein the noise reduction assembly is installed in the range hood body.

Compared with the prior art, the utility model discloses a set up first micropore wear board and second micropore wear board on the inner wall of range hood wind cabinet casing, and form first noise reduction cavity and second noise reduction cavity respectively between first micropore wear board and second micropore wear board and between second micropore wear board and wind cabinet casing, make the whole noise reduction subassembly present double-deck resonance sound absorption structure like this, can obtain the acoustic absorption frequency band of wideer, and then when using the product of this kind of noise reduction subassembly of application, make the effect of sound absorption noise reduction better, the quality and the user experience sense of using the noise reduction subassembly product have also been improved simultaneously; furthermore, the utility model discloses simple structure, cost of manufacture are low, application range is wide, are worth wideling popularize the use.

Drawings

Fig. 1 is a cross-sectional view of a noise reduction assembly provided in embodiment 1 of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

fig. 3 is an exploded view of a noise reduction assembly provided in embodiment 1 of the present invention;

fig. 4 is a schematic structural view of a first micropore penetration plate in a noise reduction assembly provided in embodiment 1 of the present invention;

fig. 5 is a schematic structural view of a second micropore penetration plate in a noise reduction assembly provided in embodiment 1 of the present invention.

In the figure, 1 is a first micropore penetration plate, 2 is a second micropore penetration plate, 3 is a wind cabinet shell, 4 is a first noise reduction cavity, and 5 is a second noise reduction cavity.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it should be clear that the terms "vertical", "horizontal", "longitudinal", "front", "rear", "left", "right", "up", "down", "horizontal", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description of the present invention, and do not mean that the device or element referred to must have a specific orientation or position, and thus, cannot be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed 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 present invention can be understood in specific cases to those skilled in the art.

Example 1

The embodiment 1 provides a noise reduction assembly, as shown in fig. 1-3 for range hood, wear board 1 including first micropore, board 2 is worn to the second micropore, and first micropore is worn board 1 and second micropore and is worn board 2 and from the lining to pile up in proper order on the inner wall of the wind cabinet casing 3 of setting in range hood, and first micropore is worn to form the first cavity 4 of making an uproar that falls between board 2 and the second micropore, and the second micropore is worn to form the second between board 2 and the wind cabinet casing 3 and is fallen cavity 5 of making an uproar for fall the noise to wind range hood.

After adopting above-mentioned scheme, wear board 1 and second micropore to wear board 2 through setting up first micropore on range hood wind cabinet casing 3's the inner wall, and wear to form first noise reduction cavity 4 and the second noise reduction cavity 5 between board 2 and second micropore wear to wear between board 2 and wind cabinet casing 3 at first micropore respectively, make whole noise reduction subassembly be double-deck resonance sound absorption structure like this, can obtain wideer sound absorption frequency band, and then when using the product of this kind of noise reduction subassembly, make the effect of making an uproar better.

Further, as shown in fig. 4 and 5, the first and second

microperforated plates

1, 2 are both stamped microperforated plates.

In this way, the first and second

perforated plates

1 and 2 are provided as a profiled perforated plate, which facilitates the formation of the first and second

noise reducing cavities

4 and 5.

Furthermore, the thickness of the first micropore penetrating plate 1 and the thickness of the second micropore penetrating plate 2 are both 0.7-0.9 mm.

Like this, when being greater than 1mm of first micropore wearing board 1 and second micropore wearing board 2's thickness, the acoustic absorptivity diminishes, and the sound absorption effect is worse, otherwise, the acoustic absorptivity grow, and the sound absorption effect is better.

Furthermore, micropores are arranged on the first micropore threading plate 1 and the second micropore threading plate 2, and the diameters of the micropores are both 0.6-0.8 mm.

Like this, wear board 1 and second micropore to wear the diameter of 2 last micropores of board and set up to 0.6 ~ 0.8mm through wearing first micropore, make the acoustic absorption coefficient grow like this, the sound absorption effect is better.

Furthermore, the perforation rate of the first microporous perforated plate 1 is 2-3%.

Furthermore, the perforation rate of the second microporous perforated plate 2 is 1.5-2%.

In this way, the first microporous perforated plate 1 and the second microporous perforated plate 2 are provided with a perforation rate of 3% or less, so that a resonance sound absorption structure is formed with an air layer behind the noise reduction assembly, and a sound absorption frequency band is widened.

Furthermore, the purpose of the perforation by setting the perforation rate of the first microperforation plate 1 to be greater than the perforation rate of the second microperforation plate 2 is to: the larger the perforation rate is, the larger the resonance frequency is, the higher the resonance frequency is determined by the first microporous perforated plate 1, the high-frequency noise is absorbed, the lower the resonance frequency is determined by the second microporous perforated plate 2, and the low-frequency noise is absorbed, so that the perforation rate of the first microporous perforated plate 1 is set to be greater than that of the second microporous perforated plate 2, and the air permeability of the first microporous perforated plate 1 is better than that of the second microporous perforated plate 2.

Further, the height of the first noise reducing cavities 4 is smaller than the height of the second noise reducing cavities 5.

The purpose of this is to: the smaller the thickness of the first noise reduction cavity 4 is, the larger the resonance frequency is, so that the first micropore penetration plate 1 determines the higher resonance frequency to absorb high-frequency noise, and the second micropore penetration plate 2 determines the lower resonance frequency to absorb low-frequency noise, thereby improving the noise reduction effect.

Further, the height of the first noise reduction cavity 4 is 7-9 mm; the height of the second noise reduction cavity 5 is 11-13 mm.

In summary, by adopting the noise reduction assembly provided by embodiment 1 of the present invention, the whole noise reduction structure is a double-layer resonance sound absorption structure, and a wider sound absorption frequency band can be obtained, so that when a product using such noise reduction assembly is used, the sound absorption and noise reduction effects are better, and the quality and user experience of the product using the noise reduction assembly are improved; furthermore, the utility model discloses simple structure, cost of manufacture are low, application range is wide, are worth wideling popularize the use.

Example 2

The oil fume suction device provided by the embodiment 1 of the invention comprises a range hood body and the noise reduction assembly provided by the embodiment 1, wherein the noise reduction assembly is arranged in the range hood body.

Through with the range hood body of making an uproar subassembly of falling in embodiment 1 install on current range hood body, because this fall the subassembly of making an uproar and be double-deck resonance sound absorption structure, can obtain wideer sound absorption frequency band, and then when using the range hood of using this kind of subassembly of making an uproar that falls for the effect of making an uproar is better in the sound absorption, has also improved the quality and the user experience sense of the product of using this kind of subassembly of making an uproar simultaneously.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a subassembly of making an uproar falls for range hood, its characterized in that wears board (2) including first micropore, second micropore, first micropore wears board (1) and second micropore to wear board (2) from inside to outside stack up in proper order on the inner wall of setting up wind cabinet casing (3) in range hood, first micropore wears to form between board (1) and the second micropore and falls cavity (4) of making an uproar between board (2), it falls cavity (5) of making an uproar to form the second between board (2) and the wind cabinet casing (3) to fall in the second micropore for it makes an uproar to fall the range hood to wind.

2. A noise reduction assembly according to claim 1, wherein the first (1) and second (2) microperforated plates are both profiled microperforated plates.

3. A noise reduction assembly according to claim 2, wherein the first (1) and second (2) microperforated plates each have a thickness of 0.7-0.9 mm.

4. A noise reduction assembly according to claim 3, wherein the first and second perforated plates (1, 2) are provided with micropores, and the diameters of the micropores are 0.6-0.8 mm.

5. A noise reduction assembly according to claim 4, wherein the first microperforation (1) has a perforation rate of 2-3%.

6. A noise reduction assembly according to claim 5, characterized in that the perforation rate of the second perforated plate (2) is 1.5-2%.

7. A noise reduction assembly according to any of claims 1-6, characterized in that the height of the first noise reduction cavity (4) is smaller than the height of the second noise reduction cavity (5).

8. A noise reduction assembly according to claim 7, wherein the height of the first noise reduction cavity (4) is 7-9 mm; the height of the second noise reduction cavity (5) is 11-13 mm.

9. An extractor hood, comprising a body of the extractor hood and the noise reduction assembly of any one of claims 1 to 8, wherein the noise reduction assembly is installed in the body of the extractor hood.