Fan Guard and Static Blade Integration for Axial Flow Efficiency
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Solution Overview
Problem
Existing axial fan devices with static blades face complexity in assembly structure, increased motor base thickness, and subsequent higher volume and cost, while also generating noise during operation.
Innovation Solution
A combination structure of a fan guard and static blades, where the static blades are arranged radially on the fan guard using radial and circumferential ribs, allowing for easy attachment and detachment, and featuring inner and outer coupling plates for secure fixation, reducing noise and enhancing air pressure and volume efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If static blades are fixed on the motor base, then air pressure and air volume are increased, but the assembly structure becomes complicated and motor base thickness increases
Solution Approach 1:
The patent combines the static blades with the fan guard into a single integrated component. The fan guard includes a mounting plate with mounting holes that directly receive the static blades, eliminating the need for separate fixation structures on the motor base. This merging reduces assembly complexity while maintaining the air pressure and air volume benefits of static blades.
Solution Approach 2:
The patent segments the fan guard into functional components: a mounting plate for attachment to the motor base, radial ribs for structural support, and mounting holes for securing static blades. This segmentation allows the static blades to be independently installed and removed without affecting the motor base structure, simplifying the overall assembly.
2Power
If static blades are fixed on the motor base, then air pressure and air volume are increased, but the overall volume and cost of the fan device increase
Solution Approach 1:
By merging the static blades with the fan guard, the patent eliminates the need for additional motor base thickness and separate fixation structures. The fan guard serves dual purposes: protecting the fan assembly and providing mounting points for static blades, thereby reducing the overall volume while maintaining performance benefits.
3Productivity
If rotation speed is increased to improve efficiency, then air pressure and air volume increase, but noise is generated
Solution Approach 1:
The patent converts the harmful noise generated by high-speed rotation into a beneficial effect by introducing static blades that guide and straighten the airflow. The static blades reduce turbulence and vortex formation, thereby reducing noise while maintaining or improving air pressure and air volume at high rotation speeds.
Data Source
AI summary
A combination structure of a fan guard and static blades is disclosed. The fan guard includes an annular plate, multiple radial ribs, and multiple circumferential ribs. The annular plate is fixed on a motor base. The radial ribs arranged around the annular plate extend radially. The circumferential ribs are arranged concentrically and spacedly and connected with radial ribs in series. Each of the static blades includes a blade body, an inner and an outer coupling plate. The inner coupling plate and the outer coupling plate are arranged on two ends of the blade body respectively. The blade body is fixed on one side of the fan guard through the inner coupling plate being combined with one end of the radial rib and through the outer coupling plate being combined with another end of the radial rib to make the static blades be combined on the fan guard.