Four-Way Binary Valve Layout Without Radial Sealing Force
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Solution Overview
Problem
Existing four-way fluid control valves require multiple sealing elements and high-cost materials to maintain a fluid-tight seal, necessitating radial sealing forces that increase torque requirements and limit actuator selection, making them costly and complex.
Innovation Solution
A four-way binary mode switching valve design featuring a main body with a shaft guide and four flow chambers, utilizing rotatable discs with communication openings to switch flow configurations without radial sealing forces, reducing component count and material costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple sealing elements are used to maintain fluid-tight seal between rotating core and main body, then sealing reliability is improved, but device complexity and cost increase
Solution Approach 1:
The patent removes the sealing elements entirely from the rotating valve core design. Instead of using multiple sealing elements to prevent leakage, the invention creates a sealing-free interface between the rotating core and main body, thereby reducing device complexity while maintaining fluid-tight operation through the specific geometric configuration of the flow paths
Solution Approach 2:
The valve core is segmented into distinct flow paths (first flow path and second flow path) that are spatially separated and do not require sealing interfaces. Each flow path is independently configured to connect specific ports, eliminating the need for sealing elements between rotating and stationary components
2Reliability
If radial sealing force is applied to engage sealing elements, then sealing reliability is improved, but torque requirement increases
Solution Approach 1:
The patent eliminates the radial sealing force requirement by removing sealing elements from the design. The rotating valve core operates without any sealing components that would require radial engagement forces, thereby significantly reducing the torque needed to rotate the core between different valve positions
3Reliability
If high-cost sealing materials are used to provide fluid-tight seal, then sealing reliability is improved, but product cost increases
Solution Approach 1:
The invention removes sealing materials from the valve design entirely. By creating a sealing-free rotating interface through clever flow path configuration, the patent eliminates the need for expensive sealing materials while maintaining fluid-tight operation, thereby reducing manufacturing cost
4Reliability
If multiple sealing elements are used in rotating core, then fluid-tight seal is maintained, but actuator selection is limited
Solution Approach 1:
By removing sealing elements from the rotating valve core, the patent eliminates the constraints that sealing requirements impose on actuator selection. This allows for greater versatility in choosing actuators based on application requirements rather than being limited by sealing compatibility
Data Source
AI summary
A valve includes a main body defining four flow chambers, a first end cap coupled to a first end of the main body, and a second end cap coupled to a second end of the main body. A first rotatable disc is coupled to a rotatable shaft adjacent the first end of the main body and a second rotatable disc is coupled to the rotatable shaft adjacent the second end of the main body. The first rotatable disc includes first and second communication openings and the second rotatable disc includes a third and fourth communication openings. The first communication opening, the first end cap, and the second communication opening cooperate to provide fluid communication between a first pair of the flow chambers while the third communication opening, the second end cap, and the fourth communication opening cooperate to provide fluid communication between a second pair of the flow chambers.