Switching valve device
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Solution Overview
Problem
Existing switching valve devices for fluid circuits, such as those in heat pumps, require complex control mechanisms and structures to switch between operation modes, leading to complications in control and increased structural complexity.
Innovation Solution
A switching valve device that utilizes a first valve to switch a flow path and a second differential pressure-driven poppet valve to easily switch an intermediate flow path, leveraging differential pressure generated by depressurization in an external flow path to simplify the switching process, with a poppet valve design that includes pressure receiving contact portions and an urging device to stabilize the valve body and prevent rattling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple solenoid valves are used to switch flow paths, then flow path switching functionality is achieved, but control complexity and structural complexity increase
Solution Approach 1:
The patent combines multiple valve functions into a single integrated valve body with multiple ports. Instead of using separate solenoid valves for different flow path switching operations, the invention integrates multiple flow control functions into one valve assembly, reducing the number of components and simplifying the overall structure while maintaining the ability to switch between multiple flow paths
Solution Approach 2:
The valve body is designed to perform multiple functions simultaneously - it can switch between different flow paths, control fluid direction, and regulate flow distribution all through a single component. This multi-functional design eliminates the need for multiple specialized valves, thereby reducing control complexity and structural complexity
2Adaptability or versatility
If multiple solenoid valves are used to switch flow paths, then flow path switching functionality is achieved, but the structure becomes complicated
Solution Approach 1:
The patent combines multiple valve functions into a single integrated valve body with multiple ports. Instead of using separate solenoid valves for different flow path switching operations, the invention integrates multiple flow control functions into one valve assembly, reducing the number of components and simplifying the overall structure while maintaining the ability to switch between multiple flow paths
Solution Approach 2:
The valve body is segmented into multiple functional zones with different port configurations, allowing each section to handle specific flow paths independently. This segmentation enables complex flow switching functionality within a single unified structure, avoiding the need for multiple separate valves while maintaining operational independence of different flow paths
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
Enables simple and stable switching between flow paths with reduced structural complexity, effectively managing the flow of fluids in fluid circuits like heat pumps by using differential pressure to operate the second valve, thus improving operational efficiency and ease of control.
Implementation Method 1
a second valve which is provided on a downstream side of the first valve and switches the intermediate flow path by a differential pressure generated by depressurization in an external flow path connected to the intermediate flow path
Data Source
AI summary
A switching valve device for switching an intermediate flow path through which a fluid flows from an inlet to an outlet includes: a first valve which switches a flow path extending from the inlet to one of two flow paths; and a second valve which is provided on a downstream side of the first valve and switches the intermediate flow path by a differential pressure generated by depressurization in an external flow path Lout connected to the intermediate flow path connected to one of the two flow paths.