High-pressure fan silencer

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...

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 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

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