Axial Fan Motor Supporter With Deflection Parts for Lower Noise
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Solution Overview
Problem
The existing outdoor units of air conditioners suffer from reduced fan performance and increased noise due to flow resistance caused by interference between the air current and the motor supporter, which affects the efficiency of the axial fan.
Innovation Solution
The outdoor unit incorporates a motor supporter with deflection parts that deflect the air current to include a rotating direction component, reducing flow resistance and noise by guiding the air current with acute-angle deflection surfaces on the support legs, eliminating the need for separate guide units like vanes or orifices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a motor supporter is provided to support the motor, then the motor is stably supported, but flow resistance increases and noise increases due to interference with air current
Solution Approach 1:
The motor supporter's support legs, which originally caused harmful flow resistance, are equipped with deflection parts that convert the harmful air current interference into beneficial flow guidance. The deflection parts redirect the air current to have a rotating direction component, transforming the obstacle into a flow control element that reduces overall resistance and noise while maintaining motor support stability.
2Ease of manufacture
If the motor supporter structure is simplified, then manufacturing is easier, but air current guidance capability is reduced
Solution Approach 1:
The deflection parts are integrated directly onto the support legs of the motor supporter, merging the motor support function with the air current guidance function into a single unified structure. This eliminates the need for separate guide vanes or orifices, maintaining ease of manufacture while providing effective air current guidance that enhances axial fan performance.
3Productivity
If deflection parts are added to the motor supporter, then axial fan performance is improved, but device complexity increases
Solution Approach 1:
The deflection parts are integrated directly onto the support legs of the motor supporter, merging the motor support function with the air current guidance function into a single unified structure. This eliminates the need for separate guide vanes or orifices, maintaining ease of manufacture while providing effective air current guidance that enhances axial fan performance.
Solution Approach 2:
The motor supporter is designed to perform multiple functions simultaneously: supporting the motor mechanically and guiding the air current aerodynamically. The support legs with integrated deflection parts serve dual purposes, reducing the need for additional components and maintaining structural simplicity while improving fan performance.
4Object-affected harmful factors
If air current is deflected with acute angle deflection surfaces, then flow resistance is reduced and noise is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The deflection parts are designed with specific acute angle deflection surfaces at critical locations where air current guidance is most needed. Rather than requiring high precision throughout the entire motor supporter structure, only the deflection surfaces need precise angular configuration, allowing standard manufacturing tolerances for the support leg structure while achieving effective flow control.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enhances the axial fan's performance by increasing static pressure and reducing power consumption and noise levels, allowing the unit to operate efficiently with improved air blowing performance without significant structural changes.
Implementation Method 1
the motor supporter includes deflection parts deflecting an air current sucked into the axial fan so as to have a rotating direction component of the axial fan
Data Source
Figure 1
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Figure 3(a)~3(b)
AI summary
Disclosed herein is an outdoor unit of an air conditioner. The outdoor unit includes an axial fan, a motor rotating the axial fan and a motor supporter supporting the motor, and the motor supporter includes deflection parts deflecting an air current sucked into the axial fan so as to have a rotating direction component of the axial fan.