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Range hood with honeycomb noise filtering device and with specific single frequency reducing function

A noise filtering and specific frequency technology, which is applied in the field of range hoods, can solve the problems of reducing noise frequency, different frequencies of maximum noise, noise reduction, etc.

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 cannot be set to reduce a specific noise frequency. For different range hoods, the frequency of the maximum noise that may be mainly generated is not the same. The range hoods in the prior art have not targeted the main frequency noise reduction

Method used

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  • Range hood with honeycomb noise filtering device and with specific single frequency reducing function
  • Range hood with honeycomb noise filtering device and with specific single frequency reducing function
  • Range hood with honeycomb noise filtering device and with specific single frequency reducing function

Examples

Experimental program
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Effect test

Embodiment 1

[0035] A cooker hood with a honeycomb noise filter capable of reducing specific single frequencies, such as Figures 1 to 3 As shown, a hood main body 2 and a honeycomb noise filter device 1 capable of reducing specific frequency noise are provided, and the honeycomb noise filter device 1 is assembled on the hood main body 2 . The honeycomb noise filtering device 1 is distributed with a plurality of through holes 11 for canceling specific single-frequency noise. The honeycomb noise filtering device 1 is a three-dimensional structure, and the through hole 11 runs through the three-dimensional structure.

[0036] The present invention achieves noise reduction of specific frequency noise by adjusting the apertures of different through holes 11, the minimum distance between the edge of the through hole 11 and the edge of the adjacent through hole 11, or the distance between the honeycomb noise filter device 1 and the main body of the hood 2. .

[0037] The diameter of the throug...

Embodiment 2

[0048] A range hood with a honeycomb noise filter device capable of reducing a specific single frequency, such as Figure 4 As shown, other features are the same as in Embodiment 1, except that the shape of the through hole 11 in this embodiment is circular.

[0049] Compared with Example 1, the circular shape is relatively easy to manufacture, and because there is no interference from edges and corners, the noise reduction effect is the best.

[0050] There is a gap between the closest wall of the honeycomb noise filter device 1 and the main body of the hood 2, and the distance of the gap is defined as H 1 .

[0051] The principle of the noise reduction device of the present invention: the honeycomb noise filter device 1 can reduce noise when the noise source propagates to the honeycomb noise filter device 1 in a limited enclosed space. Sound waves usually travel in the opposite direction when they touch the honeycomb noise filter device 1 , so most of the incident waves will...

Embodiment 3

[0057] A range hood with a honeycomb noise filter capable of reducing a specific single frequency, other features are the same as in Embodiment 1, except that the honeycomb noise filter 1 of this embodiment is a ceramic honeycomb noise filter 1 . The surface of the honeycomb noise filter device 1 is provided with an oleophobic nano-coating.

[0058] It should be noted that the honeycomb noise filter device 1 of the present invention is preferably a ceramic honeycomb noise filter device 1 , and may also be a carbon honeycomb noise filter device 1 , and the specific implementation method depends on the actual situation.

[0059] The noise elimination frequency range of the honeycomb noise filtering device 1 of the present invention is 100Hz-8000Hz.

[0060] The honeycomb noise filtering device 1 of this embodiment has the advantages of being durable, oleophobic and having a wide frequency range of noise elimination.

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PUM

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Abstract

The invention discloses a range hood with a honeycomb noise filtering device and with a specific single frequency reducing function. The range hood is provided with a range hood main body and a honeycomb type noise filtering device capable of reducing specific frequency noise, wherein the honeycomb type noise filtering device is assembled on the range hood main body; according to the range hood, by adjusting the hole diameters of different through holes, the edges of the through holes and the edge minimum distance of the adjacent through holes or the combination arrangement of the honeycomb type noise filtering device and the range hood main body, the noise reduction of the specific frequency noise is achieved; the honeycomb noise filtering device can keep a good noise reduction effect fora long time, the honeycomb type noise filtering device is easy to maintain, and dust, grease and the like on the surface can be cleared in a detached mode; the honeycomb noise filtering device has the advantages of being low in cost and high in reliability; the honeycomb type noise filtering device is made of a material which has the advantages of corrosion resistant, chemical resistant, not prone to be damaged, and easy to clean; and meanwhile the specific noise frequency which is aim can be reduced.

Description

technical field [0001] The invention relates to the field of range hoods, in particular to a range hood with a honeycomb noise filtering device capable of reducing a specific single frequency. Background technique [0002] Long-term exposure to high-noise environments can damage people's hearing, and long-term exposure to high-noise environments can also cause emotional problems for users. 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 noise reduction of range hoods in the prior art mostly achieves noise reduction through active noise reduction and passive noise reduction. 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 of the prior art cann...

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