Segmented Orifice Valve Seat Layout for Higher Flow Rate
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Solution Overview
Problem
Existing fluid control valves face limitations in increasing flow rate without enlarging the orifice or actuator, necessitating size increases to enhance stroke volume.
Innovation Solution
The fluid control valve design includes inflow and outflow ports arranged side by side in intersecting directions on the valve seat surface, with elongated boundary surfaces and internal flow paths to facilitate higher flow rates while minimizing pressure loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If annular recessed grooves are formed concentrically on the valve seat surface, then the structure is simple and manufacturing is easy, but the flow rate is limited and pressure loss is high
Solution Approach 1:
The valve seat surface is segmented into multiple rectangular inflow ports and outflow ports arranged in alternating rows, replacing the single annular recessed groove structure. This segmentation increases the total boundary surface area between inflow and outflow ports, reducing pressure loss and enabling higher flow rates without increasing the overall orifice size.
Solution Approach 2:
The patent transitions from the conventional annular (circular) recessed groove design to a rectangular port arrangement with sides extending in multiple directions. This dimensional change creates longer boundary surfaces between inflow and outflow ports, improving fluid flow efficiency and reducing pressure loss while maintaining the same orifice footprint.
2Productivity
If the size of the orifice is increased to increase flow rate, then the flow rate increases, but the size of the actuator must also be increased to maintain stroke amount
Solution Approach 1:
By segmenting the valve seat surface into multiple rectangular inflow and outflow ports arranged in alternating rows, the patent increases the effective flow area and boundary surface length within the same orifice footprint. This allows higher flow rates without increasing the overall orifice size or actuator dimensions.
Solution Approach 2:
The patent changes the geometric parameters of the flow ports from circular/annular shapes to rectangular shapes with optimized dimensions and arrangements. This parameter optimization maximizes the boundary surface area between inflow and outflow ports within the constrained orifice size, enabling increased flow rate without proportional increases in orifice or actuator size.
3Productivity
If multiple annular recessed grooves are formed on a limited size valve seat surface, then flow rate can be increased to some extent, but the structure becomes complex and manufacturing difficulty increases
Solution Approach 1:
The valve seat surface is divided into multiple rectangular inflow ports and outflow ports arranged in alternating rows, creating a segmented flow path structure. This segmentation increases flow capacity while maintaining relatively simple manufacturing, as the rectangular ports can be formed using standard machining processes without requiring complex multi-groove annular structures.
Data Source
AI summary
The present invention achieves a larger flow rate of a fluid control valve without increasing a size of an orifice or an actuator. The fluid control valve includes an orifice having a valve seat surface and a valve body having a seating surface to be seated on the valve seat surface. The orifice has a plurality of inflow ports and a plurality of outflow ports that are open along a first direction on the valve seat surface. The plurality of inflow ports and the plurality of outflow ports are arranged side by side in a second direction intersecting the first direction.