Diverter Valve Dynamic Retraction for Debris Binding
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Solution Overview
Problem
Diverter valves in bathing installations are susceptible to malfunction due to foreign matter like dirt particles, which can prevent proper operation by getting caught between surfaces and causing binding or leakage issues.
Innovation Solution
The diverter valve system incorporates a valve shaft structure with cam surfaces and a bias mechanism, allowing the diverter to be rotated away from the valve body, reducing the risk of dirt accumulation and enabling self-cleaning during operation, along with unionized connections for easy servicing and reduced noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the diverter valve maintains constant contact between the diverter and valve body, then sealing reliability is improved, but foreign matter accumulation and binding increase
Solution Approach 1:
The patent applies the dynamics principle by making the diverter movable rather than fixed. The diverter is configured to move between a first position (contacting the valve body for sealing) and a second position (retracted from the valve body). This dynamic positioning allows the system to alternate between sealing mode and cleaning mode, preventing foreign matter accumulation while maintaining sealing reliability when needed.
2Reliability
If the diverter is designed with tight clearance to the valve body, then sealing performance is improved, but susceptibility to binding with debris increases
Solution Approach 1:
The diverter is designed to dynamically change its position relative to the valve body. During sealing operations, the diverter maintains tight clearance for optimal sealing performance. During retraction, the diverter moves away from the valve body, creating clearance that prevents binding with debris. This dynamic adjustment resolves the contradiction between tight clearance for sealing and clearance for preventing binding.
3Device complexity
If the diverter valve uses fixed connection types, then structural simplicity is improved, but adaptability to different applications decreases
Solution Approach 1:
The patent applies the universality principle by designing the diverter valve with multiple connection type options (threaded, flanged, welded, or other suitable connections) that can be selected based on specific application requirements. This multi-functional design allows the same basic diverter valve structure to adapt to different installation environments and system configurations, enhancing versatility without significantly increasing structural complexity.
Data Source
AI summary
An exemplary embodiment of a diverter valve system includes a valve body defining an internal chamber having at least first, second and third ports, and a first valve seat associated with the first port and a second valve seat associated with the second port. A valve shaft structure includes an internal shaft portion positioned within the internal chamber, the valve shaft structure configured for rotation about a valve axis through a range of motion. A diverter structure includes a diverter face portion configured to seat against the first valve seat when in a first rotational position and against the second valve seat when in a second position, and a mounting portion configured to mount on the internal shaft portion of the valve shaft structure.