Centrifugal Wind Wheel Hub Layout for Higher Airflow and Low Noise
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Solution Overview
Problem
Centrifugal wind wheels in the related art provide low air volumes and have low air exchange efficiency, along with potential structural weaknesses and noise issues.
Innovation Solution
A centrifugal wind wheel design with air inlet holes arranged radially and corresponding to the blades, ensuring a stable flow field and structural strength, enhancing air exchange volume and efficiency while maintaining good sound quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If air inlet holes are added to the hub to increase air volume, then air exchange efficiency is improved, but structural strength of the hub deteriorates
Solution Approach 1:
The patent applies local quality by varying the distribution and dimensions of air inlet holes across different regions of the hub. The air inlet holes are arranged with different sizes at different locations, allowing optimal air intake while maintaining structural integrity in critical areas. This localized optimization resolves the contradiction between maximizing air exchange efficiency and preserving hub strength.
Solution Approach 2:
The patent changes geometric parameters of the air inlet holes, including their dimensions, distribution patterns, and angular positions. By optimizing these parameters within specific ranges (e.g., certain hole diameters, spacing intervals, and angular distributions), the patent achieves both high air exchange efficiency and adequate structural strength, resolving the technical contradiction.
2Productivity
If the number of air inlet holes is increased to improve air volume, then air exchange volume is improved, but flow field stability deteriorates causing noise
Solution Approach 1:
The patent employs asymmetric arrangement of air inlet holes, where holes are not uniformly distributed but positioned at specific asymmetric locations around the hub. This asymmetric configuration optimizes flow patterns, maintains flow field stability even with multiple holes, and reduces turbulence-induced noise while preserving high air exchange volume.
Solution Approach 2:
The patent uses a systematic copying approach where a standardized air inlet hole pattern is replicated at multiple locations around the hub. By copying an optimized single-hole configuration multiple times with proper spacing and angular distribution, the patent achieves high air volume while maintaining flow stability and minimizing noise through consistent, predictable flow patterns.
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 design significantly improves air exchange volume by up to 10% and ensures structural integrity and noise-free operation, providing reliable performance at high rotational speeds.
Implementation Method 1
Centrifugal wind wheels are rotatable by means of inputted mechanical energy to increase a gas pressure and discharge a gas
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A centrifugal wind wheel (100) and an air treatment device having same. The centrifugal wind wheel (100) comprises a hub (1) and blades (2), wherein a plurality of air input holes (10) are formed in the hub (1), the plurality of air input holes (10) are arranged at intervals in the circumferential direction of the hub (1), and each air input hole (10) penetrates the hub (1); and a plurality of blades (2) are provided, the plurality of blades (2) are all arranged on the hub (1), the plurality of blades (2) are arranged at intervals in the circumferential direction of the hub (1) and are arranged at intervals on the radial outer side of the plurality of air input holes (10), the number of blades (2) is equal to the number of air input holes (10), and each blade (2) is arranged opposite a corresponding air input hole (10) in the radial direction of the hub (1).