Wave-Shaped Diffuser Blades for Quieter Humidifier Airflow
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Solution Overview
Problem
Existing humidification and air cleaning apparatuses generate excessive noise when the blower fan operates at high speeds to increase air volume, affecting air quality and user experience.
Innovation Solution
The apparatus incorporates a centrifugal blower fan with inclined discharge direction and modified diffuser blades featuring a wave shape with ridges and valleys, which reduces noise by forming a phase difference in the air flow and improving flow distribution, while also being easily manufacturable through injection molding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the blower fan operates at high speed to increase air volume, then the air volume is improved, but the noise level increases
Solution Approach 1:
The diffuser blades are designed with a wave shape including ridges and valleys instead of straight or simple curved forms. This complex curvature creates phase differences in air flow, reducing turbulence and noise while maintaining effective air movement for high air volume operation
Solution Approach 2:
Different portions of the diffuser blades have varying wave patterns with specific ridge and valley configurations. This local variation in blade geometry optimizes air flow at different locations, reducing noise generation while preserving overall air volume performance
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 minimizes operating noise and reduces power consumption by optimizing air flow noise reduction and flow distribution, enhancing the overall performance and user experience of the humidification and air cleaning system.
Implementation Method 1
modifying diffuser blades to have a wave shape including ridges and valleys, which reduces noise by forming a phase difference in the air flow
Data Source
AI summary
A humidification and air cleaning apparatus is provided, in which a wave having a predetermined cycle is formed on a plurality of blades of a blower fan, such that operating noise caused by a flow of discharged air may be minimized, and a wave is formed at a trailing edge, such that a phase difference may be formed for air to be separated, and air flow noise of the discharged air may be reduced.