Curved Mounting Protrusion for Low-Friction Filter Detachment
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Solution Overview
Problem
In filtration systems, attaching and detaching filter containers by translation operation results in high friction at the fluid inlet/outlet joining portions, making the process difficult, especially when detachment is required, due to constant distance between flow path ends on the manifold side.
Innovation Solution
A filter container attachment and detachment apparatus featuring a first mounting protrusion with a rotation center axis and curved surfaces, and a holding part with a notch wider than the chord of the arcs, allowing for easy translation and rotation-based attachment and detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a filter container is attached to a manifold by translation operation with constant distance between flow path ends, then the flow path connection is simplified, but friction at the joining portions becomes large making attachment and detachment difficult
Solution Approach 1:
The invention introduces curved surfaces (arc-shaped surfaces) on the mounting protrusion that engage with corresponding curved surfaces on the holding part. This curved surface geometry allows the filter container to rotate smoothly during attachment and detachment operations, significantly reducing friction between the joining portions compared to flat-surface translation operations.
2Device complexity
If the distance between flow path ends on manifold side is kept constant, then the manifold structure is simplified, but the filter container cannot be easily detached due to high friction
Solution Approach 1:
By forming arc-shaped curved surfaces on the mounting protrusion that match the curvature radius of the holding part, the invention enables low-friction rotational movement during detachment while keeping the manifold structure relatively simple with constant distance between flow path ends.
3Ease of operation
If curved surfaces with arc shape are formed on mounting protrusion, then friction during rotation is reduced, but manufacturing complexity of the mounting protrusion increases
Solution Approach 1:
The curved surfaces are designed with a specific curvature radius relationship (R1 ≥ R2) that optimizes both the reduction of friction during rotation and the manufacturability of the mounting protrusion. This geometric relationship allows for practical manufacturing while achieving the desired low-friction rotational attachment and detachment.
Data Source
AI summary
A attachment and detachment apparatus removably attaches a filter container containing a filter, as a part of a filtration apparatus that filters fluid with the filter. The filter container includes a first mounting protrusion having a filter container flow path in fluid communication with the filter. An outer periphery surface of the first mounting protrusion includes at least two curved surfaces respectively formed to be at least a part of an arc surface. The attachment and detachment apparatus includes a first mounting protrusion holding part that holds the first mounting protrusion. The first mounting protrusion holding part having a holding part flow path for the fluid and a notch communicating between an area surrounded by the inner periphery surface and an outer side of the first mounting protrusion holding part.