Impedance compound right-angled muffler

A technology of impedance compounding and muffler, applied in the direction of sounding equipment, instruments, etc., can solve the problems of small wind resistance, large wind resistance, and the resistance part does not have the ability to absorb high-frequency noise, etc., to achieve the effect of strong adaptability and improved aerodynamic performance

Active Publication Date: 2012-06-27
XIAMEN JIADA GREEN CONSTRUCION ENG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the disadvantages of the existing impedance composite muffler that the wind resistance is relatively large and the resistant part does not have the function of absorbing high-frequency noise, the present invention provides an impedance composite right-angle muffler, the resistant part of which has the ability to absorb mid-low frequency and high-frequency noise at the same time High-efficiency impedance composite muffler with less wind resistance

Method used

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  • Impedance compound right-angled muffler
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  • Impedance compound right-angled muffler

Examples

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Embodiment Construction

[0025] exist figure 1 , 2 , 3, 4, and 5 shown in the first embodiment, the muffler shell (1), the resistive noise reduction structure (2), the right-angle resistance noise reduction structure (3), the flange interface (4), the air outlet An impedance composite right-angle muffler composed of hundreds of sheets (5). The sheet-type sound-absorbing body (6) of the resistive noise-absorbing structure (2) is installed in the muffler shell (1) using a positioner (7), and is arranged in parallel along the airflow direction. The sheet-type sound-absorbing body is composed of (6) inner sound-absorbing material (9) covered with glass cloth (10) on both sides and the perforated face plate (11), and the face-protecting perforated plates (11) into an arc shape (8). The two sides of the resistive noise-absorbing structure (2) are right-angled resistant noise-absorbing structures (3), and the right-angled resistant noise-absorbing structures (3) are composed of cubes (13) with arc-sha...

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Abstract

The invention discloses an all-frequency sound absorption impedance compound right-angled muffler, which consists of a muffler shell, a resistive muffling structure, a right-angle resistive muffling structure, a flange port, and an air outlet louver. The invention is characterized in that the resistive muffling structure consists of plate type sound absorbers, axes of the plate type sound absorbers are arranged in parallel along an airflow direction; the right-angle resistive muffling structure consists of a cube and a cambered diversion sound absorber, wherein four sides are an inner wall of the muffler shell, one side is the resistive muffling structure, the other side is the air outlet louver or the air inlet flange port, and the cambered diversion sound absorber and the inner wall of the muffler shell together form a right-angle cavity. The inventive structure has good muffling performance and process performance; and the resistive muffling structure and the right-angled reactive muffling structures can be combined according to specific mounting conditions, and are highly adaptive.

Description

technical field [0001] The invention relates to a muffler, in particular to a muffler with impedance composite broadband. Background technique [0002] A ventilation muffler, referred to as a muffler for short, is an acoustic device that prevents sound transmission and allows airflow to pass through. In places that need to keep low background noise and block the influence of external noise, and in places with high noise to prevent the impact of noise on the surrounding environment, and at the same time, ventilation is required, mufflers are required. Mufflers are widely used in architectural acoustics and noise control engineering. There are many types of mufflers, and the muffler mechanism includes resistive muffler, resistive muffler, impedance compound muffler, etc. The common muffler adopts a resistive plate muffler, which has the characteristics of simple structure, but it has an unsatisfactory muffler effect on low-frequency noise, and the existence of the sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/16
Inventor 林嘉祥
Owner XIAMEN JIADA GREEN CONSTRUCION ENG CO LTD
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