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Kitchen ventilator with flow guide component having noise filtration function

A technology for noise filtering and range hood, which is applied in the direction of removing oil fume, parts of pumping device for elastic fluid, pump element, etc. Reduce, reduce specific single frequency noise and broadband noise, low cost 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
In the prior art, for passive noise reduction, it is necessary to add an additional passive noise reduction device inside the range hood, which leads to an increase in the size of the range hood, and increases the production cost and the overall weight of the range hood

Method used

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  • Kitchen ventilator with flow guide component having noise filtration function
  • Kitchen ventilator with flow guide component having noise filtration function
  • Kitchen ventilator with flow guide component having noise filtration function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A range hood with a noise filtering function guide assembly, such as figure 1 As shown, the main body of the hood and the air guide assembly 1 capable of eliminating noise are provided, and the air guide assembly 1 is assembled inside the main body of the hood. The flow guiding component 1 is distributed with a plurality of through holes 2 for eliminating noise.

[0043] The present invention achieves specific single-frequency or specific multi-frequency noise reduction by adjusting the apertures of different through holes 2 , the minimum distance between the edge of a through hole 2 and the edge of an adjacent through hole 2 , or the area distribution of the through holes 2 .

[0044] The diameter of the through hole 2 of the present invention is defined as d, and d≤30mm; wherein d is a plurality of numerical values. The minimum distance between the edge of the through hole 2 and the edge of the adjacent through hole 2 of the present invention is b, where b is any val...

Embodiment 2

[0055] A range hood with a noise filtering function guide assembly, such as figure 2 and 3 As shown, the other features are the same as those in Embodiment 1, except that: the main body of the range hood is provided with an exhaust assembly, the exhaust assembly is assembled inside the main body of the range hood, and the flow guide assembly 1 is assembled under the exhaust assembly.

[0056] The exhaust assembly is provided with a volute 3 , and the guide assembly 1 is assembled under the volute 3 . The volute 3 is also distributed with a plurality of through holes 2 for eliminating noise.

[0057] The principle of the noise reduction device in this embodiment is as follows: in a limited enclosed space, when the noise source propagates to the flow guide assembly 1 or the volute 3, noise reduction is performed. The sound wave usually travels in the opposite direction when it touches the guide assembly 1 or the volute 3 , so most of the incident wave will interfere with the ...

Embodiment 3

[0062] A range hood with a noise filtering function guide assembly, such as Figure 4 and 5 As shown, other features are the same as those in Embodiment 1, except that the flow guide assembly 1 of this embodiment is specifically a metal flow guide assembly 1 . The volute 3 is specifically a metal volute 3 .

[0063] The noise elimination frequency range of the volute 3 and the guide assembly 1 is 100Hz-8000Hz.

[0064] It should be noted that the flow guide assembly 1 of the present invention can also be a plastic flow guide assembly 1 or an alloy flow guide assembly 1 . The volute 3 can also be a plastic volute 3 or an alloy volute 3, and the specific implementation depends on the actual situation.

[0065] The thickness of the guide assembly 1 and the volute 3 of the present invention is less than 20mm, because too thick will increase the overall weight of the range hood.

[0066] Both the guide assembly 1 and the volute 3 in this embodiment are integrally connected with...

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Abstract

A kitchen ventilator with a flow guide component having a noise filtration function comprises a kitchen ventilator body and the flow guide component capable of eliminating noise. The flow guide component is assembled into the kitchen ventilator body. A plurality of through holes for eliminating the noise are distributed in the flow guide component. The kitchen ventilator has the advantages that internal space of the kitchen ventilator can be utilized effectively, minimized dimensional design can be realized, and overall weight can be reduced; the noise can be reduced at or near a noise source,namely a fan; the specific single-frequency or wide-band 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 regional distribution of the through holes of a volute; the kitchen ventilator has the advantages of low cost and high reliability; the specific single-frequency noiseor 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 noise filtering function guide assembly. 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. In the prior art, for passive noise reduction, it is necessary to add an additional passive noise reductio...

Claims

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Application Information

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IPC IPC(8): F24C15/20F04D29/66
CPCF04D29/66F24C15/20
Inventor 陈小平林勇进李健鹏李思成
Owner FOSHAN VIOMI ELECTRICAL TECH
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