Cartwheel Valve Domed Plug for Multi-Directional Flow Control
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Solution Overview
Problem
Current flow-control valves, such as duckbill, umbrella, and cartwheel types, face issues like waste accumulation, turbulence, flow restrictions, and limited directional functionality, particularly in medical applications where multi-path fluid control is necessary, and existing solutions are not fully automated or safe for patient use.
Innovation Solution
A cartwheel-type flow-control valve with an arch-shaped central plug and flexible elastomeric material design that allows for bidirectional operation, providing improved sealing and fluid passage capabilities, enabling fully automatic and safe operation without manual handling, suitable for multi-way applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a central plug plan format is used in cartwheel valves, then the valve structure is simple, but waste accumulates in inner corners and causes turbulence
Solution Approach 1:
The patent replaces the plan (flat) central plug format with a domed (curved/spheroidal) format. This curvature eliminates the inner corners where waste accumulates in flat designs, thereby reducing turbulence and waste accumulation while maintaining structural simplicity.
2Ease of manufacture
If a central plug plan format is used, then manufacturing is easier, but the valve deforms under high suction pressure allowing flow passage
Solution Approach 1:
The domed format of the central plug provides structural strength to resist high suction pressures without deforming, while remaining manufacturable. The curved geometry distributes stress more effectively than a flat plan format, preventing unwanted flow passage under pressure.
3Ease of manufacture
If a central plug plan format is used, then the valve is simple to manufacture, but it can only control flow in one direction
Solution Approach 1:
The patent designs the cartwheel valve with a domed central plug that enables multi-directional flow control capability. The valve can function as a two-way, three-way, or four-way valve depending on configuration, making it versatile for different applications while maintaining ease of manufacture through the elastomeric material construction.
4Volume of moving object
If the liquid passage area is smaller than the inlet connector area, then the valve structure is compact, but flow restriction occurs
Solution Approach 1:
The patent employs a three-dimensional domed central plug design that optimizes fluid passage geometry. This dimensional approach allows the valve to maintain a compact overall size while providing adequate flow passage area, eliminating flow restriction without increasing valve volume.
5Device complexity
If manual handling of taps and manifolds is used for flow control, then the system structure is simple, but the operation is not automated and requires gauntlet handling
Solution Approach 1:
The cartwheel valve is designed to provide automatic flow control through its inherent mechanical design. The valve automatically responds to pressure differentials and opens/closes flow paths without requiring manual operation of taps or manifolds, eliminating the need for gauntlet handling while maintaining simple system structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The valve achieves enhanced sealing and fluid control with reduced size and cost, ensuring reliable and safe automatic operation for complex fluid handling processes, particularly in medical settings, by allowing fluid flow in both directions and accommodating various flow configurations.
Implementation Method 1
made of silicone, rubber, flexible PVC or other elastomeric material that meets the necessary flexibility specifications and resistance to valve operation
Implementation Method 2
enhanced sealing and fluid control with reduced size and cost, ensuring reliable and safe automatic operation
Data Source
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AI summary
The present invention relates to improvements of valves of the cartwheel type, with receptive arrangements incorporating said valves, which comprise a component of elastomeric material in the form of a cartwheel fastened by means of the external ring to the valve case. The invention comprises a central plug connected by rods to the external ring and, normally, when used in two-way casings (with only one inlet and one outlet), said valve acts as a unidirectional valve. When used in a three-way casing, or a casing with more than three thereof, said valve can act to seal off and let through a flow of fluid on either side of the valve, alternately, depending on the fluid-circulation design choice.