Filter Assembly Adaptor for Round Cylindrical Air Filters
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Solution Overview
Problem
Existing air filter assemblies are designed to accommodate only oval filter elements, limiting their adaptability to accept filter elements of varying shapes, such as round and oval, due to the unavailability of oval filters.
Innovation Solution
A modular adaptor system comprising a plate with a radially inner convex guide, a radially outer convex guide, and a concave receiver, along with a tightening member and catch, allows existing oval covers to seal cylindrical filter elements with a round cross-sectional shape by using an adaptor disk made of polymeric material, which can be attached via adhesive, ensuring a secure and adjustable seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing air filter assemblies are designed to accommodate only oval filter elements, then the sealing mechanism is optimized for oval shapes, but the adaptability to accept filter elements of varying shapes is limited
Solution Approach 1:
The adaptor disk is designed with a universal sealing surface that can accommodate both oval and round filter elements. The disk includes a recessed portion that conforms to the cover plate's sealing surface and an opposing sealing surface that can seal against either oval or round filter element ends, making the same cover assembly adaptable to multiple filter shapes without requiring different covers for each shape
Solution Approach 2:
The adaptor disk serves as an intermediary component between the existing oval-shaped cover assembly and round filter elements. It interfaces with the cover plate through its recessed sealing surface and simultaneously seals against the round filter element through its opposing sealing surface, enabling compatibility without modifying the original cover design
2Adaptability or versatility
If a modular adaptor system is introduced to enable shape adaptability, then versatility is enhanced, but device complexity increases
Solution Approach 1:
The adaptor disk is designed as a separate, modular segment that can be independently attached to the existing cover plate. This segmentation allows the adaptor to be added without replacing the entire cover assembly, maintaining the original cover components while adding adaptability through a discrete, attachable component
Solution Approach 2:
The adaptor disk is made from polymeric material, which provides both structural integrity and sealing capability. This material choice allows the disk to function as a composite solution that bridges the mechanical interface between the metal cover plate and the filter element, providing both structural support and sealing in a single component
3Adaptability or versatility
If the entire filter assembly is replaced to accommodate different filter shapes, then adaptability is achieved, but cost and complexity increase significantly
Solution Approach 1:
The sealing function is extracted from the entire cover assembly and concentrated into the adaptor disk component. By isolating the shape-adaptation requirement to a single removable component rather than redesigning the entire cover assembly, the solution achieves shape compatibility while minimizing manufacturing cost and complexity
Solution Approach 2:
The adaptor disk is designed as a relatively simple, low-cost polymeric component that can be manufactured economically and replaced if needed. This approach is more cost-effective than replacing entire metal cover assemblies, allowing adaptability to be achieved through a cheaper, simpler component
Data Source
AI summary
A device for adapting a cover for an existing air filter assembly to seal an end portion of a replacement cylindrical air filter having a round cross-sectional shape is disclosed. The cover has a plate with a radially inner convex guide separated from a radially outer convex guide by a concave receiver, a tightening member connected to the plate, and a catch having a first end movably connected to the tightening member, and the catch having a second end configured to engage a keeper, the tightening member adjustable to vary a distance between the catch and the plate. An adaptor is attachable to the plate of the cover. The adaptor has a first side for engagement with the plate and an opposing second side for engagement with an end portion of a cylindrical filter. The first side has a sealing surface extending radially inwardly from a peripheral edge. The sealing surface has a sufficient area to overlap a portion of the radially inner guide of the plate and a portion of the receiver when the adaptor is attached to the plate.