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Kitchen ventilator with multi-layer honeycomb noise filtration device

A technology of noise filtering and multi-layer bee, which is applied in the direction of oil fume removal, heating methods, household heating, etc. It can solve the problems of different frequency of the maximum noise, inability to reduce the noise of the range hood, and reduce the frequency of noise, etc., to achieve a reduction Specific single-frequency noise and broadband noise, high reliability, noise reduction effect

Pending Publication Date: 2018-11-02
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
Since the frequency range of the noise generated by the range hood can range from 100Hz to 8000Hz, it is obvious that the passive noise reduction device for a single frequency band cannot produce a good noise reduction effect on the range hood

Method used

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  • Kitchen ventilator with multi-layer honeycomb noise filtration device
  • Kitchen ventilator with multi-layer honeycomb noise filtration device
  • Kitchen ventilator with multi-layer honeycomb noise filtration device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A range hood with a multi-layer honeycomb noise filtering device, such as Figures 1 to 3 As shown, a hood main body 2 and a honeycomb noise filtering device capable of eliminating noise are provided, and the honeycomb noise filtering device is assembled inside the hood main body 2 .

[0042] The honeycomb noise filtering device is distributed with a plurality of through holes 11 for eliminating noise. The honeycomb noise filtering device is provided with multi-layer honeycomb boards 1 , and the multi-layer honeycomb boards 1 are respectively assembled inside the main body 2 of the cigarette machine. Specifically, the honeycomb panel 1 of this embodiment is arranged in two layers, and the two-layer honeycomb panel 1 is assembled on the main body 2 of the hood.

[0043] It should be noted that the number of layers of the honeycomb panel of the present invention can be two layers, or any positive integer greater than 2, and the specific implementation method depends on t...

Embodiment 2

[0057] A range hood with a multi-layer honeycomb noise filtering device, such as Figures 4 to 5 As shown, other features are the same as those in Embodiment 1, except that the through holes 11 of each layer of honeycomb boards 111 and the through holes 11 of adjacent honeycomb boards 1 in this embodiment are all staggered from each other.

[0058] Compared with Embodiment 1, the honeycomb noise filtering device of this embodiment has a larger surface area, which can ensure a wider range of noise reduction.

Embodiment 3

[0060] A range hood with a multi-layer honeycomb noise filtering device, such as Figure 6 As shown, other features are the same as those in Embodiment 1, except that the number of through holes 11d and b in this embodiment is two. The range hood of this embodiment is a range hood that eliminates multi-frequency noise

[0061] Compared with Embodiment 1, the values ​​of d and b in this embodiment are two, and the combination of the two can be used to eliminate multi-frequency noise. The internal space of the through hole 11 in this embodiment is used to adjust and eliminate noise of different frequencies, thereby increasing the frequency range of the noise.

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Abstract

A kitchen ventilator with a multi-layer honeycomb noise filtration device comprises a kitchen ventilator body and the honeycomb noise filtration device capable of eliminating noise. The honeycomb noise filtration device is assembled in the kitchen ventilator body. A plurality of through holes for eliminating the noise are distributed in the honeycomb noise filtration device. The honeycomb noise filtration device is provided with a plurality of layers of honeycomb plates. The honeycomb plates are assembled in the kitchen ventilator body. The kitchen ventilator with the multi-layer honeycomb noise filtration device has the advantages that specific single-frequency noise or specific multi-frequency noise reduction is implemented by adjusting combination of the diameters of the different through holes, minimum distances between the edges of the adjacent through holes or the distance between the honeycomb noise filtration device and the kitchen ventilator body; the kitchen ventilator has the advantages of low cost and high reliability; the specific single-frequency noise or wide-band noise can be reduced effectively, the noise-reduction frequency range is wide, and the multi-frequency noise can be reduced.

Description

technical field [0001] The invention relates to the field of range hoods, in particular to a range hood with a multi-layer honeycomb noise filtering device. 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 cannot be set to reduce specific noise f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24C15/20
CPCF24C15/2035
Inventor 陈小平林勇进李健鹏李思成
Owner FOSHAN VIOMI ELECTRICAL TECH
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