Filtering device
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Solution Overview
Problem
Conventional fan filtering devices in clean rooms suffer from structural weaknesses, leading to vibration, noise, and inefficiencies due to thin plate bodies, which can result in poor air filtration and backflow of waste gas.
Innovation Solution
A filtering device with an integrally formed channel-shaped housing and closure plate made of aluminum alloy, featuring ribs for increased strength, a wind guiding plate for vortex airflow, and a fan assembly that reduces vibration and noise, while ensuring secure mounting to prevent gaps and backflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional fan filtering device uses thin plate bodies for housing, then ease of manufacture is improved, but structural strength and vibration resistance deteriorate
Solution Approach 1:
The patent employs composite material construction by combining metal plates with reinforcing ribs and support structures. The housing comprises metal plates fastened together with reinforcing ribs welded or fastened to the inner surfaces, creating a composite structure that maintains manufacturability while significantly enhancing structural strength and vibration resistance.
2Ease of manufacture
If conventional fan filtering device uses thin plate bodies, then ease of manufacture is improved, but noise generation increases due to vibration
Solution Approach 1:
The composite structure of metal plates with reinforcing ribs and support members creates a more rigid assembly that resists vibration during fan operation. This directly reduces the harmful operation noise generated by thin plate bodies while maintaining ease of manufacture through standardized fastening and welding processes.
3Ease of operation
If fan filtering device is disposed over ceiling frame, then installation ease is improved, but reliability deteriorates due to squashing and loosening
Solution Approach 1:
The housing is segmented into multiple metal plate components that can be assembled and fastened to the ceiling frame in a modular fashion. This segmentation allows for easier installation while the distributed fastening points across multiple plates provide more reliable mounting that resists squashing and loosening compared to a single monolithic structure.
Solution Approach 2:
The housing and closure plate are pre-assembled with filters and fan components before being mounted to the ceiling frame. This preliminary assembly ensures proper alignment and secure fastening of all components, preventing loosening and maintaining reliability while simplifying the final installation process.
4Device complexity
If plate bodies are used for housing, then device complexity is reduced, but air filtering efficiency deteriorates due to gaps and backflow
Solution Approach 1:
The housing is divided into multiple metal plate segments that can be precisely fastened together with minimal gaps. The segmentation allows for better sealing between components while maintaining structural integrity, preventing air backflow and improving filtering efficiency without significantly increasing device complexity.
Data Source
AI summary
A filtering device is provided and has an integrally formed housing, a filtering assembly disposed on one side of the housing and a fan disposed on the other side of the housing through a closure plate. The housing and the closure plate are fabricated separately, thereby allowing the filtering device to be formed with great weight and volume. Further, during operation of the fan, the housing is prevented from vibration, and operation noise of the filtering device is reduced.