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Self-blocking interference silencing equipment

A noise reduction equipment and self-resistance technology, which is applied in the direction of sound-emitting devices and instruments, can solve the problems of material, volume limitation, and poor noise reduction effect, and achieve the effects of controllable size, meeting high cleanliness requirements, and convenient installation

Pending Publication Date: 2022-06-24
SHENZHEN KEDE ACOUSTIC TECH
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  • Description
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Problems solved by technology

[0005] However, the above-mentioned muffler achieves the noise reduction effect through the air sound insulation method, and the noise reduction effect is limited by the material and volume, and the noise reduction effect is not very good.

Method used

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Embodiment Construction

[0029] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0030] The applicant found through research that: sound wave is a kind of mechanical wave, which is generated by the vibration of the sound source. A bypass branch pipe is set on the straight pipe, and the incident wave is equally divided into two channels at point A, and the lengths of the two channels are respectively It is L1 and L2, and turns at point B. If the difference between the acoustic wave propagation distances of the two channels (L2-L1) is an odd multiple of the half wavelength of the acoustic wave to be eliminated, then the phase of the two acoustic waves at point B at the ju...

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Abstract

The invention discloses a self-resistance type interference silencing device which comprises a silencer shell plate, an interference inner container assembly and an interface flange, the interference inner container assembly is formed by coaxially assembling a plurality of interference inner containers, the interference inner containers are arranged in the silencer shell plate, and the interference inner containers are arranged side by side and connected to the interface flange in parallel; each interference inner container is provided with at least two arc-shaped bent pipe parts and a straight pipe part connected with the arc-shaped bent pipe parts, and the arc-shaped bent pipe parts are connected together through the straight pipe parts and connected with the connector flange through the straight pipe parts. An original sound source is used for decomposition, two sound sources with opposite phases are generated in different path sections according to the sound path difference principle, then sound energy is mutually counteracted, the effect of noise elimination and reduction is achieved, airflow basically belongs to the straight-through process, resistance is small, and energy conservation and environmental protection are achieved.

Description

technical field [0001] The invention belongs to the technical field of noise reduction equipment, and particularly relates to a self-resistance interference noise reduction equipment. Background technique [0002] Conventional mufflers on the market are mainly resistive mufflers or impedance composite mufflers. Traditional mufflers mainly rely on internal filling of sound-absorbing materials to convert sound energy into heat energy, thereby achieving the effect of noise reduction. Some places that require clean areas will use air conditioning purification systems. , In the case of ventilation, the noise of the equipment should also be eliminated, but due to the requirements of cleanliness, it is not allowed to use mufflers filled with sound-absorbing materials to avoid small and fine particles affecting the cleanliness, such as the food industry, medical industry, electronics industry, especially Some research and development of drugs, vaccines, chips and other industries. ...

Claims

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Application Information

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IPC IPC(8): G10K11/175G10K11/178G10K11/34
CPCG10K11/175G10K11/17861G10K11/346
Inventor 王少云吴瑜媛冯奕伟刘俊成谭志华高宏俊
Owner SHENZHEN KEDE ACOUSTIC TECH
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