Silencing axial flow fan

By employing a multi-level noise reduction design in the silencing axial flow fan, combined with the use of sound-absorbing cotton, the problems of high noise reduction costs and airflow obstruction associated with traditional axial flow fans are solved, achieving high efficiency, quiet operation, and convenient maintenance, thus meeting noise control requirements.

CN224453129UActive Publication Date: 2026-07-03YINGFEI TONGREN (JIANGSU) FAN CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YINGFEI TONGREN (JIANGSU) FAN CO LTD
Filing Date
2025-06-26
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Traditional axial flow fans rely on silencers for noise reduction, which results in high manufacturing, installation and maintenance costs, increased equipment size, airflow obstruction and reduced ventilation efficiency.

Method used

A silencer-type axial flow fan is adopted, including a silencer axial flow cylinder, silencer blocks, and silencer space to construct a multi-level silencer system. The silencer blocks are detachably connected to the silencer axial flow cylinder and the mounting box. By utilizing the synergistic design of the silencer axial flow cylinder, silencer blocks, and silencer space, combined with the use of sound-absorbing cotton, multi-level silencer is achieved.

Benefits of technology

It effectively reduces operating noise, meeting the needs of places with high noise control requirements. The equipment has a compact structure, saving installation space. The sound-absorbing blocks are easy to install and remove, reducing maintenance costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

This application relates to the field of axial flow fan technology, and in particular to a silencer-type axial flow fan, which includes a mounting housing, a fan body, a silencer axial flow cylinder for initial silencing of the fan body, and silencer blocks for further silencing. The fan body is installed inside the silencer axial flow cylinder. Multiple silencer blocks are arranged in a circumferential array. One side of any of the silencer blocks is detachably mounted on the outer wall of the silencer axial flow cylinder, and the other side of any of the silencer blocks is detachably connected to the mounting housing, facilitating the installation, maintenance, and repair of the equipment. A silencing space is formed between adjacent silencer blocks, the silencer axial flow cylinder, and the mounting housing to guide airflow diffusion and induce sound wave interference attenuation. By utilizing the synergistic design of the silencer axial flow cylinder, silencer blocks, and silencing space, a multi-level silencing system is constructed, which significantly improves the silencing performance of the axial flow fan, effectively reduces operating noise, and meets the requirements of places with high noise control requirements.
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