风扇框湍流结构
By setting up densely fragmented units on the air inlet side of the fan frame to form a turbulent structure, the problem of increased noise at high speeds of axial fans is solved, and the effects of reducing broadband noise and blade tip vortex noise are achieved.
CN114837999BActive Publication Date: 2026-07-17ASIA VITAL COMPONENTS (CHINA) CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ASIA VITAL COMPONENTS (CHINA) CO LTD
- Filing Date
- 2022-04-07
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing axial fans generate more noise at high speeds, especially the wideband noise and blade tip vortex noise, which are difficult to reduce effectively. Furthermore, existing noise reduction methods are costly or pose risks of manufacturing precision issues and stalling.
Method used
Densely distributed fragmentation units are set on the air intake side of the fan frame to form a complex gap turbulent structure, which breaks up the intake airflow, reduces the vortex noise at the blade tail end, and lowers the broadband noise.
Benefits of technology
It effectively reduces fan broadband noise, reduces blade tip vortex noise, and lowers the noise level to 50.36 dB (SPL), while avoiding manufacturing precision and stall risks.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN114837999B_ABST
Abstract
本发明涉及一种风扇框湍流结构，包括一框体具有一进风侧及一出风侧分别设在该框体的两侧，且在该框体中间处具有一气流通道由该进风侧贯穿至该出风侧，且该气流通道具有一通道内壁连接该进风侧及该出风侧，该进风侧具有一入口连通该气流通道，该入口具有一碎化区位于该进风侧与该通道内壁之间，该碎化区包括复数密集分布的细碎化单元，该复数细碎化单元之间形成复数间隙连通该气流通道，借由该复数细碎化单元打碎从该进风侧吸入的一气流，使该气流的一部分通过该复数细碎化单元之间的间隙碎化分散成间隙湍流进入该气流通道中，借以实现降低宽带带噪音的效果。
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