Sheet-Metal Clamping Ring Filter for Easy Sealed Replacement
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Solution Overview
Problem
Existing air supply systems for living spaces with wood-burning stoves face issues with costly and complex manufacturing processes, inadequate sealing, and difficult filter replacement due to clamping rings and filter baskets, which complicate handling and incur additional costs.
Innovation Solution
A filter arrangement using a clamping ring made of sheet metal with radial projections, a sealing ring, and a pocket filter, allowing for easy assembly and disassembly with self-adhesive sealing and handle parts for simplified maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If clamping rings or filter baskets are used to secure filter material, then the filter is held in place, but the manufacturing process becomes complex and expensive
Solution Approach 1:
The clamping ring is segmented with radial projections that can be bent independently to clamp the filter material, replacing complex filter baskets with a simpler segmented ring structure
Solution Approach 2:
Instead of using complex filter baskets to hold the filter, the invention inverts the approach by using a simple clamping ring with bent projections that clamp the filter material from the outside, simplifying the overall structure
2Reliability
If double clamping rings are used to secure the filter, then the filter is held firmly, but handling and assembly become time-consuming
Solution Approach 1:
The single clamping ring is segmented with multiple radial projections that can be bent independently, allowing quick adjustment and assembly without the complexity of double rings
Solution Approach 2:
The radial projections are designed to be bendable dynamically, allowing the clamping ring to be easily adjusted and assembled by hand without requiring complex tools or multiple components
3Reliability
If seals are attached to clamping rings, then sealing is improved, but the seal must be removed when replacing the filter, complicating maintenance
Solution Approach 1:
The sealing function is segmented from the clamping ring structure, with the seal integrated into the radial projections that can be independently manipulated
Solution Approach 2:
The radial projections with integrated seals are designed to be dynamically bendable, allowing the seal to maintain contact during operation while enabling easy filter replacement by simply bending the projections outward
Data Source
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AI summary
A filter arrangement (2) for an air supply device (5) is described, comprising: a clamping ring (1') made of sheet metal; a sealing ring (2); and a filter part (4) made of a filter material; in which the clamping ring (1') has a base body (1a) and, distributed over the outer circumference thereof, a plurality of first radial projections (1b') which protrude from the base body (1a), are bent back radially inward so that they extend parallel to a plane of the base body (1a) and are each arranged at a finite distance from the base body (1a); in which the sealing ring (3) is fastened concentrically to the base body (1a); and in which the filter part (4) has a pocket or bag shape with an opening (4a) and is held in a clamped manner by an edge region of the opening (4a) between the base body (1a) and the bent-back first radial projections (1b').