Composite filter and air purifier including same
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Solution Overview
Problem
Conventional foldable air filters require complex hinge structures and additional sealing members, leading to increased manufacturing costs and complexity, especially when combining dust collection and deodorization filters.
Innovation Solution
A composite filter design featuring rotatable filtering parts connected by a flexible bracket system that minimizes volume during transportation and simplifies manufacturing, using a laminated base material and integrated attachment portions to seal gaps between filter modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a conventional hinge structure is used for folding the filter, then the filter can reduce volume during transportation, but the manufacturing cost and structural complexity increase
Solution Approach 1:
The sealing member and bracket are merged into a single integrated component. The bracket includes sealing portions that directly extend to seal gaps between filtering parts, eliminating the need for separate hinge structures and separate sealing members, thus reducing both structural complexity and manufacturing cost while maintaining the volume reduction capability
Solution Approach 2:
The bracket serves multiple functions simultaneously: it connects adjacent filtering parts, enables folding motion for volume reduction, and provides sealing functionality through integrated sealing portions. This multi-functionality replaces what would traditionally require multiple separate components including hinges and separate sealing members
2Reliability
If a separate sealing member is added to prevent air leakage between stacked filters, then sealing performance improves, but the manufacturing process becomes more complicated and cost increases
Solution Approach 1:
The sealing function is merged into the bracket structure itself. The bracket includes sealing portions that extend to contact and seal gaps between filtering parts and filter modules, eliminating the need for separate sealing members and simplifying the manufacturing process to a single integrated component
3Adaptability or versatility
If a complicated hinge structure is applied to composite filter, then folding capability is achieved, but additional sealing members are required and manufacturing cost increases
Solution Approach 1:
The sealing portions are integrated directly into the bracket structure, combining the support function and sealing function in one component. This eliminates the need for separate sealing members and complicated hinge structures, achieving folding capability with simplified overall structure
Solution Approach 2:
The bracket is designed as a multi-functional component that provides structural support, enables folding motion, and provides sealing functionality simultaneously, reducing the overall number of components and simplifying the composite filter structure
Data Source
AI summary
A composite filter includes a filter unit including a filter member having filtering parts, at least one filter module arranged in parallel with at least one of the filtering parts, and a bracket supporting the filtering parts disposed adjacent to each other and the filter module so that the filtering parts disposed adjacent to each other are rotatable. The bracket includes a folded portion that is selectively folded according to the relative rotation of the filtering parts, and attachment portions connected to the folded portion with the folded portion interposed therebetween, and attached to the side surfaces of the filtering parts disposed adjacent to each other. The folded portion and the attachment portions are provided integrally and are formed of a flexible material, and the attachment portion extend to the side surface of the filter module adjacent thereto to seal a gap between the filtering part and the filter module.