Control Valve Bypass Channel for Minimum Cooling Flow
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Solution Overview
Problem
Conventional control valves in cooling systems are complicated in structure and inconvenient for assembly due to the need for disassembly of the valve body to accommodate a spherical valve gate, which is larger than the valve body's through hole.
Innovation Solution
A control valve design featuring a valve body and gate with a main channel and bypass channel, allowing the cylindrical valve gate to be directly installed, enabling the valve body to be made in a single piece, with a lower flow rate limit greater than zero to ensure fluid flow to lower temperature heat sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spherical valve gate is used to ensure low leakage, then sealing performance is improved, but the valve body must be disassembled into many pieces for installation, making the configuration complicated and assembly inconvenient
Solution Approach 1:
The spherical valve gate is segmented into multiple sections that can be assembled separately and then combined within the valve body through the through-hole, allowing the valve body to remain as a single integrated piece while still accommodating the spherical gate structure
Solution Approach 2:
The segmented valve gate sections are designed to nest within each other or within the valve body during assembly, allowing the spherical gate to be installed through the through-hole without requiring the valve body to be disassembled into multiple pieces
2Reliability
If a spherical valve gate is used to ensure low leakage, then sealing performance is improved, but assembly and manufacturing become inconvenient
Solution Approach 1:
The spherical valve gate is divided into multiple segments that can be manufactured separately using standard machining processes and then assembled together, simplifying the manufacturing of each individual component while maintaining the spherical geometry needed for low leakage
Solution Approach 2:
The valve gate segments are pre-assembled into the spherical configuration outside the valve body, and then the complete spherical gate is installed as a single unit through the through-hole, making the final assembly process convenient and straightforward
3Ease of manufacture
If the valve gate is made cylindrical with diameter smaller than the opening, then the valve body can be made in a single piece, but the lower flow rate limit becomes greater than zero, ensuring minimal cooling effect
Solution Approach 1:
A bypass channel is introduced as an intermediary flow path that allows a portion of the fluid to flow around the valve gate, ensuring that even when the main channel is closed, a minimal cooling flow can still reach the lower temperature heat sources
Data Source
AI summary
The disclosure provides a control valve which includes a valve body having an inner space and a valve gate. The valve gate is movably located inside the inner space of the valve body and the valve gate has at least one main channel having two valve ports opposite to each other, and each of the valve ports of the main channel has a plurality of circular holes and a curved hole, where the circular holes are arranged in a line and the curved hole is connected to one of the circular holes that is located at an end of the line. The control valve has a lower flow rate limit which is greater than zero.