High-pressure fan silencer

A high-pressure fan and muffler technology, which is applied in the direction of machines/engines, mechanical equipment, liquid fuel engines, etc., can solve the problems that affect normal work and study, the noise reduction effect is not obvious, and the dust is easy to block, so as to achieve obvious noise reduction effect and small resistance , the effect of not being blocked

Inactive Publication Date: 2017-02-08
姚均甫
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, fan noise seriously affects people's normal work and study. The existing fan mufflers are single, resistive, resistive, and impedance compound, but the

Method used

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Embodiment Construction

[0014] Fan muffler structure of the present invention is as figure 1 and figure 2 As shown, a high-pressure fan muffler, the inner center of the first-level sound-absorbing outer cylinder 4 is provided with a first-level sound-absorbing perforated plate inner cylinder 3, and between the first-level sound-absorbing outer cylinder 4 and the first-level sound-absorbing porous plate inner cylinder 3 is provided with sound-absorbing cotton 5 , the lower end of the first-level silencer outer cylinder 4 and the first-level silencer porous plate inner cylinder 3 is connected to the air inlet 15, and the air inlet 15 is connected to the first-level silencer outer cylinder 4 and the first-level through the inlet flange 1 and the air inlet rib plate 2 The inner cylinder 3 of the sound-absorbing porous plate; the upper part of the first-level sound-absorbing outer cylinder 4 is connected to the outer cylinder 9 of the diffuser cone, and the outer cylinder 9 of the diffuser cone is provid...

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Abstract

The invention provides a high-pressure fan silencer. A primary silencing porous plate inner cylinder is arranged in the center in a primary silencing outer cylinder, and the lower ends of the primary silencing outer cylinder and the primary silencing porous plate inner cylinder are connected with an air inlet. The upper part of the primary silencing outer cylinder is connected with a diffusion cone outer cylinder, and a diffusion cone inner porous plate is arranged in the diffusion cone outer cylinder. The upper part of the diffusion cone outer cylinder is connected with a diffusion cylinder, a diffusion cylinder inner porous cylinder is arranged in the diffusion cylinder, and the upper parts of the diffusion cylinder and the diffusion cylinder inner porous cylinder are connected with an air outlet. A secondary silencing zone porous cylinder is arranged at the central part in the diffusion cylinder inner porous cylinder and the diffusion cone inner porous plate, and the lower end of the secondary silencing zone porous cylinder is connected with the upper end of the primary silencing porous plate inner cylinder. According to the invention, the combination of more than three silencers is adopted, and ascending air flow is raised by the cone; by arranging upper silencing cotton on an outlet of the secondary silencing zone porous cylinder, dissipative and reactive combination silencing is formed; and by arranging the open type air outlet, the flow rate of the ascending air flow is low, the resistance is small, and a great denoising effect can be realized. The high-pressure fan silencer is not prone to damage and blockage and is convenient to mount and disassemble.

Description

technical field [0001] The invention relates to the technical field of sound-absorbing equipment, in particular to a fan silencer. Background technique [0002] At present, fan noise seriously affects people's normal work and study. The existing fan mufflers are single, resistive, resistive, and impedance compound, but the noise reduction effect is not obvious, or it is easy to break, and the maintenance cost is high. There is a lot of dust and it is easy to block, and the use effect is poor. Contents of the invention [0003] In order to solve the above-mentioned problems existing in the existing fan muffler, the present invention provides a high-pressure fan muffler adopting impedance compound multiple mufflers. [0004] The technical solution adopted by the present invention to achieve the above purpose is: a high-pressure fan silencer, the inner center of the first-level sound-absorbing outer cylinder 4 is provided with a first-level sound-absorbing perforated plate i...

Claims

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Application Information

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IPC IPC(8): F04D25/08F04D29/66
CPCF04D25/08F04D29/663
Inventor 姚均甫柏长辉
Owner 姚均甫
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