Humidifier Blower Diffuser Blade Geometry to Reduce Air Flow Noise
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Solution Overview
Problem
Existing humidification and air cleaning apparatuses generate excessive noise when the air blower unit operates at high speeds due to increased air volume, which is not effectively addressed by existing technologies.
Innovation Solution
The apparatus incorporates a blower fan with a centrifugal fan design that discharges air upward and features diffuser blades with dual sweep angles, forming a phase difference in the air flow to reduce noise and power consumption, while also including a separable air humidification module for efficient water supply and easy maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the air blower unit operates at high speed to increase air volume, then the humidification and air cleaning efficiency is improved, but noise level increases significantly
Solution Approach 1:
The patent applies parameter changes by modifying the geometric parameters of the diffuser blades, specifically implementing dual sweep angles (first sweep angle and second sweep angle) instead of a single angle. This geometric parameter modification optimizes air flow characteristics, allowing the blower to operate at high speeds with reduced noise by improving airflow smoothness and reducing turbulence-induced noise
Solution Approach 2:
The patent utilizes curvature principles through the dual sweep angle design of the diffuser blades. The curved surface geometry with varying sweep angles creates a more gradual and smooth air flow path, reducing sudden directional changes and turbulence. This curved geometric approach minimizes noise generation while maintaining high air volume output
2Productivity
If the air blower unit operates at high speed, then air circulation efficiency is improved, but power consumption increases
Solution Approach 1:
The patent modifies the geometric parameters of the diffuser blades by implementing dual sweep angles, which optimizes the air flow characteristics. This parameter optimization reduces resistance and improves airflow efficiency, allowing the system to achieve high air circulation efficiency at lower power consumption levels by reducing the energy required to move air through the housing
3Adaptability or versatility
If the humidification module is integrated into the air cleaner, then device functionality is improved, but cleaning and maintenance difficulty increases
Solution Approach 1:
The patent applies segmentation by dividing the integrated device into separable modules - the humidification module can be detached from the air cleaner housing. This modular design allows users to easily remove, clean, and maintain the humidification components without disassembling the entire device, thus maintaining high functionality while improving ease of maintenance
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
The solution significantly reduces operating noise and power consumption while maintaining high air volume, and allows for easy cleaning and maintenance of the humidification and air cleaning modules.
Implementation Method 1
a blower fan with a centrifugal fan design that discharges air upward
Implementation Method 2
features diffuser blades with dual sweep angles, forming a phase difference in the air flow to reduce noise and power consumption
Implementation Method 3
a separable air humidification module for efficient water supply
Data Source
AI summary
A humidification and air cleaning apparatus is provided, in which a first sweep angle and a second sweep angle are formed at diffuser blades, and an included angle is formed between the first sweep angle and the second sweep angle, such that a phase difference is formed in air passing through the diffuser blades, and thus, air flow noise may be reduced.