Sound attenuation and noise reduction device

A muffler cover and horn-shaped technology, which is applied in the field of muffler and noise reduction device, can solve the problem of unsatisfactory noise elimination effect, and achieve the effect of noise elimination and enhanced heat dissipation.

Pending Publication Date: 2017-07-21
SHANGHAI SAIFEI ENVIRONMENTAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a noise reduction and noise reduction device, which solves the problem that the noise elimination effect of the current simple noise reduction hole structure is not ideal.

Method used

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Embodiment Construction

[0013] In order to easily understand the technical means, creative features, purpose and effect of the present invention, the present invention will be further explained in conjunction with specific drawings below.

[0014] Such as Figure 1-Figure 2 As shown, a noise reduction device includes a noise reduction cover 1 and a substrate 2. The noise reduction cover 1 includes a horn-shaped cover 11, a diaphragm 12, a permanent magnet 13, and a coil 14. A layer is fixed inside the opening of the horn-shaped cover 11 The diaphragm 12 is fixed with a permanent magnet 13 in the middle of the inner side of the diaphragm 12. The coil 14 surrounds the permanent magnet 13 and is fixed on the inner wall of the horn-shaped cover 11. When the diaphragm 12 vibrates, the permanent magnet 13 is inside the coil 14. To cut magnetic lines, the tail of the horn-shaped cover 11 is provided with fixed earrings 15, and the horn-shaped cover 11 is provided with heat dissipation holes 16, and the base pl...

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Abstract

The invention discloses a sound attenuation and noise reduction device, which belongs to the technical field of sound attenuation. It includes a sound-absorbing cover and a base plate. The sound-absorbing cover includes a horn-shaped cover, a diaphragm, a permanent magnet, and a coil. A diaphragm is fixed inside the opening of the horn-shaped cover. A permanent magnet is fixed in the middle of the inner side of the diaphragm. The coil surrounds the permanent magnet. The magnet is surrounded and fixed on the inner wall of the horn-shaped cover. When the diaphragm vibrates, the permanent magnet moves to cut the magnetic induction line in the coil. There are multiple rows of sound-absorbing covers closely arranged on the base plate, and the sound-absorbing covers are fixed to the base plate through fixing earrings. It not only has the noise reduction function of the sound-absorbing hole, but also can absorb more noise than the simple sound-absorbing hole; there are cooling holes on the horn-shaped cover to enhance the heat dissipation of the coil; the diaphragm is fixed inside the horn-shaped cover, which can better Collect noise for greater noise cancellation.

Description

Technical field [0001] The invention relates to a noise reduction and noise reduction device, which belongs to the technical field of noise reduction. Background technique [0002] The sound-absorbing board is a kind of plate-shaped material with the function of noise reduction and noise reduction. It is mainly used in places that need to eliminate noise and echo, such as factories, theaters, concert halls, etc. The existing sound-absorbing panels are mainly realized in two ways, one It is to use sound-absorbing materials to silence the sound; the other is to use sound-absorbing holes on the sound-absorbing plate to achieve sound cancellation. The first way, the sound-absorbing effect of sound-absorbing materials is related to the cost. Good sound-absorbing materials are very expensive, and the cost is too high, which is not conducive to large-scale promotion and application; the second way, through the sound-absorbing structure of the sound-absorbing hole, although part of the n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/82
CPCE04B1/8218
Inventor 蔡佳张毅郝毅徐晓峰
Owner SHANGHAI SAIFEI ENVIRONMENTAL TECH
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