Centrifugal fan air outlet structure, fan and combined fan applying same

By introducing a guide vane and a volute into the centrifugal fan's outlet structure and adjusting the shape and direction of the outlet, the problems of surge and noise caused by unbalanced outlet pressure were solved, resulting in more efficient fan outlet operation.

CN116857227BActive Publication Date: 2026-06-16FANS TECH ELECTRIC CO LTD
3 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
FANS TECH ELECTRIC CO LTD
Filing Date
2023-07-04
Publication Date
2026-06-16

AI Technical Summary

⚠Technical Problem

The existing centrifugal fans suffer from problems such as unbalanced outlet pressure, resulting in fan surge, high noise, and low air output efficiency.

⚗Method used

By incorporating a guide vane and a volute in the air outlet structure, the cross-section and direction of the air outlet are adjusted. The tilt angle and combined structure of the guide vane are used to balance the airflow pressure, thereby reducing turbulence and noise.

🎯Benefits of technology

It effectively eliminates fan surge, reduces noise, and improves air output efficiency and overall fan performance.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The application discloses a centrifugal fan air outlet structure, a fan applying the same and a combined fan, and belongs to the technical field of centrifugal fans. The centrifugal fan air outlet structure comprises an outer shell plate, an air outlet and an air inlet. The air inlet is arranged on one side wall of the outer shell plate. The other side of the outer shell plate is open to form an opening. The air outlet is arranged on one end of the outer shell plate. The centrifugal fan air outlet structure further comprises a wind guide part. The wind guide part is arranged on the upper edge of the outer shell plate connected with the air outlet. When viewed along the air outlet direction of the air outlet, the included angle between the inner side of the wind guide part facing the inner cavity and the horizontal plane is B, and 0° < B ≤ 15°. The flow rate difference of the air inlet is adjusted through the inclination angle of the wind guide part, so that the airflow turbulence at the outlet is reduced, the noise of the fan is reduced, and low-pressure surge is eliminated.
Need to check novelty before this filing date? Find Prior Art