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Range hood with multi-frequency plane noise filtering device

A noise filtering and multi-frequency technology, which is applied in the field of range hoods with multi-frequency planar noise filtering devices, can solve the problems of not being able to reduce the noise of range hoods, and not being able to reduce noise in multiple frequency bands, and achieve easy maintenance and noise reduction The effect of wide frequency range and low cost

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 100 Hz to 8000 Hz, 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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  • Range hood with multi-frequency plane noise filtering device
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  • Range hood with multi-frequency plane noise filtering device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A range hood with multi-frequency plane noise filtering device, such as Figure 1-5 As shown, a hood main body 2 and a planar noise filter device 1 capable of reducing multi-frequency noise are provided, and the planar noise filter device 1 is assembled on the hood body 2.

[0059] The planar noise filtering device 1 is configured with a plurality of planar panels 11 distributed with through holes 111 for canceling noise of different frequencies.

[0060] The aperture of the through hole 111 of the present invention is defined as d, and d≤30mm; wherein the value of d is multiple.

[0061] The minimum distance between the edge of the through hole 111 and the edge of the adjacent through hole 111 of the present invention is b, and b is any value greater than 0, and the value of b is multiple.

[0062] When the aperture d remains unchanged, the smaller the value of the minimum distance b between the edge of the through hole 111 and the edge of the adjacent through hole 111, the gre...

Embodiment 2

[0075] A range hood with multi-frequency plane noise filtering device, such as Figure 6 to 7 As shown, the other features are the same as those of the first embodiment, the difference is that there are a plurality of planar panels 11, specifically two. The two flat panels 11 are staggered and assembled inside the main body 2 of the hood. The through holes 111 of each flat panel 11 and the through holes 111 of the adjacent flat panel 11 are all staggered.

[0076] It should be noted that there are two flat panels 11 in the present invention, and it can also be any positive integer greater than 2, and the specific number depends on actual conditions.

[0077] Compared with the first embodiment, the multiple planar panels 11 in this embodiment are more conducive to noise reduction.

Embodiment 3

[0079] A range hood with multi-frequency plane noise filtering device, such as Figure 8 to 9 As shown, the other features are the same as those of the first embodiment, the difference is that there are a plurality of planar panels 11, specifically two. Specifically two. The two flat panels 11 are aligned and assembled inside the main body 2 of the hood. The through holes 111 of each planar panel 11 and the through holes 111 of adjacent planar panels 11 are all aligned with each other.

[0080] Compared with the first embodiment, the multiple planar panels 11 in this embodiment are more conducive to noise reduction. At the same time, compared with Embodiment 2, the through holes 111 of the different planar panels 11 are all aligned with each other, which is more conducive to noise elimination.

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PUM

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Abstract

The invention relates to a range hood with a multi-frequency plane noise filtering device. The range hood comprises a range hood body and the plane noise filtering device capable of reducing multi-frequency noises and arranged on the range hood body. Multi-frequency noise reducing can be achieved by the range hood with the multi-frequency plane noise filtering device by means of adjusting the diameters of different through holes, the minimum distance between the edge of each through hole and the edge of an adjacent through hole, the distribution of the through holes of a panel or the distancebetween the plane noise filtering device and the range hood body. The plane noise filtering device can keep the good noise reducing effect for a long time and has the advantage of being easy to maintain. Dust and grease on the surface of the plane noise filtering device can be cleaned after dismantling the plane noise filtering device. The plane noise filtering device has the advantages of being low in cost and high in reliability.

Description

Technical field [0001] The invention relates to the field of range hoods, in particular to a range hood with a multi-frequency plane noise filtering device. Background technique [0002] Long-term exposure to a high-noise environment often results in human hearing loss, and long-term exposure to a noisy environment can also cause emotional problems for users. As people's quality of life improves, people's tolerance for noise is getting lower and lower. Therefore, the noise reduction of range hoods is getting more and more attention. [0003] The noise reduction of the range hood 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 1000 Hz, and the noise above 1000 Hz can only be processed by passive noise reduction technology. However, the passive noise reduction device of the prior art can only process noise in a single frequency band, and ...

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