Blade structure for centrifugal fans

The blade structure for centrifugal fans addresses issues of pressure differences and vibration by dividing airflow and strengthening the blades, resulting in improved aerodynamic performance and reduced noise.

TWM686159UActive Publication Date: 2026-08-01VAST GLORY ELECTRONIC & HARDWARE & PLASTIC (HUI ZHOU) LTD
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Patent Information

Application Number
TW115204836
Authority / Receiving Office
TW · TW
Patent Type
Utility models
Current Assignee / Owner
Priority Date
2026-03-04
Filing Date
2026-05-27
Publication Date
2026-08-01
Estimated Expiration
2036-05-26

AI Technical Summary

Technical Problem

Centrifugal fan blades in existing technologies suffer from significant pressure differences, friction, airflow separation, vortex shedding, and vibration due to their single-piece structure, leading to reduced aerodynamic performance and broadband turbulent noise.

Method used

A blade structure for centrifugal fans is designed with a solid of revolution, comprising blade units arranged in a ring array and connected by a reinforcing member, with first and second blades extending in opposite directions and connected by a connecting part, forming a layered airflow division and enhanced structural strength.

Benefits of technology

The layered blade structure reduces airflow pressure and friction, enhances blade strength, and minimizes vibration and noise, improving fan performance and stability.

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Abstract

A blade structure for a centrifugal fan includes: a rotating body, blade units, and a reinforcing member. The blade units are arranged in a ring array around the outer wall of the rotating body. The reinforcing member is located between two adjacent blade units, and its two ends are respectively connected to the two adjacent blade units. Each blade unit includes: a first blade, a second blade, and a connecting portion. A gap is provided between the first blade and the second blade to accommodate the connecting portion. The first blade and the second blade are respectively connected to opposite sides of the connecting portion, and the first blade and the second blade extend in opposite directions along the axial direction of the rotating body. This novel design divides the blade of a traditional one-piece structure into a first blade and a second blade, creating upper and lower layers, thereby dividing the airflow into smaller parts, reducing the pressure and friction of each airflow unit, and thus improving the fan's performance.
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