An outer rotor fan with adjustable wind wheel angle and a wind wheel angle adjusting mode thereof
By designing various impeller angle adjustment structures and forced heat dissipation methods, the problems of non-adjustable impeller angle and insufficient motor heat dissipation in external rotor fans have been solved, realizing flexible adjustment of impeller angle and efficient heat dissipation of motor, thereby improving the applicability and operating efficiency of the fan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HANGZHOU DUNLI ELECTRIC APPLIANCES
- Filing Date
- 2026-04-24
- Publication Date
- 2026-07-17
AI Technical Summary
Existing external rotor axial flow fans cannot flexibly adjust the working angle of the impeller, which limits their application range. In addition, the motor's heat dissipation capacity is insufficient, affecting the overall performance optimization.
The design incorporates various impeller angle adjustment structures, employing toothed engagement, pin slot insertion, rib slot engagement, and combination methods to achieve flexible adjustment and fixation of the impeller angle. A forward-facing impeller is also installed at the impeller hub to form a forced heat dissipation structure.
It achieves high precision, rapid adjustment and high stability of the fan blade angle, expands the application range of the fan, improves operating efficiency and significantly enhances the heat dissipation capacity of the motor.
Smart Images
Figure CN122407584A_ABST