Rotatable Shaft Bypass Flow Path for Filter Replacement Water Supply
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Solution Overview
Problem
Existing water purifying apparatuses with bypass structures have complex designs that decrease productivity and assembling workability, and deteriorate water flow performance due to reliance on elastic members, which can fail or malfunction.
Innovation Solution
A water purifying apparatus with a simplified bypass flow path switching structure using a rotatable shaft that connects water inlet and outlet portions, allowing for smooth water flow and easy filter attachment/detachment, eliminating the need for complex elastic members and separate valve structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a flow path switching plunger supported by an elastic member is used to enable bypass flow path switching, then the bypass function can be achieved, but the structure becomes complicated and productivity decreases
Solution Approach 1:
The invention extracts and eliminates the elastic member and flow path switching plunger from the system. Instead of using these separate components, the filter cartridge itself performs the flow path switching function through its position during attachment and detachment, thereby simplifying the overall structure while maintaining bypass functionality.
Solution Approach 2:
The filter cartridge is given multiple functions: it serves both as the filtering element and as the flow path switching mechanism. When detached, it allows bypass flow; when attached, it directs flow through the filter. This eliminates the need for dedicated switching components.
2Reliability
If a flow path switching plunger with sliding structure is used, then bypass flow path can be switched, but the bypass path becomes complicated and water flow performance deteriorates
Solution Approach 1:
The flow paths are clearly segmented into two distinct routes: the bypass flow path that passes around the filter cartridge when detached, and the filtering flow path that passes through the filter when attached. This segmentation creates simple, direct paths for water flow without complicated switching mechanisms.
3Ease of operation
If elastic members are used for flow path switching, then bypass function can be achieved, but the flow path cannot be switched when the elastic member performance deteriorates or becomes abnormal
Solution Approach 1:
The filter cartridge automatically performs the flow path switching function through its own position and movement during attachment and detachment. No separate switching mechanism or elastic member is needed, eliminating the reliability issues associated with elastic member degradation.
4Reliability
If a complex flow path switching plunger structure is used, then bypass flow path can be switched, but assembling workability decreases
Solution Approach 1:
The invention removes the complex flow path switching plunger assembly entirely, eliminating multiple parts that require precise assembly. The simplified structure with direct bypass passages improves assembling workability significantly.
Data Source
AI summary
A water purifying apparatus including a head having a water inlet portion and a water outlet portion; a shaft provided in the head and rotatably mounted between the water inlet portion and the water outlet portion; a bypass flow path passing through a circumference of the shaft, and communicating the water inlet portion with the water outlet portion according to rotation of the shaft; a filter detachably mounted to the head, and having a filter inserting portion in which the shaft is inserted when being mounted on the head; and a filtering flow path in which an inlet port and an outlet port are formed on the circumference of the shaft in a direction intersecting the bypass flow path, and communicated between the filter, the water inlet portion and the water outlet portion with each other according to the rotation of the shaft.