Multi-frequency noise filtering range hood with through holes distributed according to arrangement region

A technology of noise filtering and regional distribution, applied in the field of range hoods, can solve the problems such as the inability to reduce the noise reduction effect of range hoods and the inability to reduce noise in multiple frequency bands. high effect

Inactive Publication Date: 2018-12-07
FOSHAN VIOMI ELECTRICAL TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The active noise reduction method can only act on the noise with a frequency within 1000Hz, and the noise above 1000Hz can only be processed by passive noise reduction technology
However, the passive noise reduction device in the prior art can only deal with the noise of a single frequency band, and cannot perform noise reduction on the noise of multiple frequency bands.
Since the frequency range of the noise generated by the range hood can be 100Hz to 8000Hz, it is obvious that the passive noise reduction device for a single frequency band in the prior art cannot produce a good noise reduction effect on the range hood

Method used

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  • Multi-frequency noise filtering range hood with through holes distributed according to arrangement region
  • Multi-frequency noise filtering range hood with through holes distributed according to arrangement region
  • Multi-frequency noise filtering range hood with through holes distributed according to arrangement region

Examples

Experimental program
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Effect test

Embodiment 1

[0042] A multi-frequency noise filter range hood with through holes distributed according to the arrangement area, such as Figure 1-3 As shown, a hood main body 2 and a noise filtering device 1 capable of reducing multi-frequency noise are provided, and the noise filtering device 1 is assembled on the hood main body 2 . The noise filtering device 1 is arranged as a panel 11 distributing through holes 111 for canceling multi-frequency noise. The through holes 111 are distributed in the noise filtering device 1 according to the arrangement area 13 .

[0043] The arrangement area 13 of the present invention is a triangular arrangement, a square arrangement, a rhombus arrangement or a polygonal arrangement other than the above three arrangements. Specifically, the arrangement area 13 in this embodiment is arranged in a triangle.

[0044] The triangular arrangement of this embodiment, such as image 3 shown in . It should be noted that the triangular arrangement in the presen...

Embodiment 2

[0060] A multi-frequency noise filter range hood with through holes distributed according to the arrangement area, such as Figure 5 As shown, other features are the same as in Embodiment 1, the difference is that the arrangement area 13 of this embodiment is arranged in a square, such as Figure 5 shown in .

[0061] It should be noted that the square arrangement in the present invention is not limited to Figure 5 middle, Figure 4 Middle A and Figure 4 As shown in middle B, other arrangement regions 13 arranged in any square shape also meet the requirements of the square arrangement in the present invention, and are also within the protection scope of the present invention.

[0062] Both d and b of this embodiment have a plurality of values. This embodiment is a range hood for multi-frequency noise reduction.

[0063] It has been verified by experiments that the arrangement area 13 of this embodiment is arranged in a square, so that the noise reduction effect is bette...

Embodiment 3

[0065] A multi-frequency noise filter range hood with through holes distributed according to the arrangement area, such as Figure 6 As shown, other features are the same as in Embodiment 1, the difference is that there is a gap between the panel 11 and the wall closest to the hood main body 2, and the distance of the gap is defined as H 1 . The noise filtering device 1 is also provided with a sound-absorbing part 12, and the sound-absorbing part is assembled with the main body 2 of the cigarette machine. The thickness of the sound-absorbing part 12 is defined as H 2 , and H 2 ≤0.6H 1 .

[0066] The sound absorbing part 12 of this embodiment is fixed on the outer surface of the panel 11 . It should be noted that the sound-absorbing part 12 of the present invention can also be fixed on the surface of the wall closest to the panel 11 and the main body 2 of the hood or the sound-absorbing part 12 can be fixed between the wall gap between the panel 11 and the main body 2 of t...

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Abstract

The invention discloses a multi-frequency noise filtering range hood with through holes distributed according to an arrangement region. The range hood is provided with a range hood main body and a noise filtering device capable of reducing multi-frequency noise, wherein the noise filtering device is assembled on the range hood main body; the noise filtering device is arranged as a panel on which the through holes are distributed and the through holes are used for counteracting the multi-frequency noise, and the through holes are distributed on the noise filtering device according to the arrangement region; the noise filtering device can keep a good noise reduction effect for a long time, the noise filtering device is easy to maintain, and dust, grease and the like on the surface can be cleared in a detached mode; the noise filtering device has the advantages of being low in cost and high in reliability; the noise filtering device is made of a material which has the advantages of corrosion resistant, chemical resistant, and not prone to be damaged, so that narrowband noise and broadband noise can be effectively reduced, the frequency range is wide, and the multi-frequency noise canbe reduced.

Description

technical field [0001] The invention relates to the field of range hoods, in particular to a multi-frequency noise filter range hood in which through holes are distributed according to the arrangement area. Background technique [0002] Being in a high-noise environment for a long time will often damage people's hearing, and it will also cause emotional problems for users in a noisy environment for a long time. With the improvement of people's quality of life, people's tolerance to noise is getting lower and lower. Therefore, the noise reduction of range hoods has also received more and more attention. [0003] The range hood noise reduction in the prior art mostly realizes the reduction of noise by means of active noise reduction and passive noise reduction. The active noise reduction method can only be used for noise with a frequency within 1000Hz, and the noise above 1000Hz can only be processed by passive noise reduction technology. However, the passive noise reductio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24C15/20
CPCF24C15/2021
Inventor 陈小平林勇进李健鹏李思成
Owner FOSHAN VIOMI ELECTRICAL TECH
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