Multi-Way Valve Pressure Balancing for Internal Leakage Control
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Solution Overview
Problem
Existing multi-way valves in thermal management systems of electric vehicles suffer from internal leakage, particularly at higher hydraulic pressures.
Innovation Solution
A multi-way valve design featuring a valve housing and core with buffer chambers and balance holes to isolate fluid communication, allowing pressure equalization and reducing leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing multi-way valves are used to control fluid flow in thermal management systems, then fluid flow control is achieved, but internal leakage occurs especially at higher hydraulic pressures
Solution Approach 1:
The valve core is segmented into multiple independent flow channels, each with its own sealing structure. This segmentation allows each channel to be optimized independently for sealing performance under high pressure, preventing internal leakage between different fluid paths while maintaining effective flow control.
Solution Approach 2:
Sealing elements act as intermediaries between the valve core and valve body, creating reliable seals at the interface. These sealing intermediaries prevent direct fluid communication between high-pressure regions and low-pressure regions, eliminating internal leakage paths while allowing the valve to function under high hydraulic pressure.
2Adaptability or versatility
If multi-way valves are used to manage coolant flows in different circuits, then flow control in multiple circuits is achieved, but internal leakage occurs between circuits
Solution Approach 1:
The valve core is divided into multiple independent flow channels, each corresponding to a specific circuit. This segmentation ensures that fluid in one circuit cannot leak into another circuit, as each channel has its own dedicated sealing structure. The valve can control flows in multiple circuits simultaneously while maintaining complete isolation between them.
Solution Approach 2:
Different regions of the valve core have different sealing characteristics optimized for specific circuit requirements. Each flow channel region is designed with local sealing quality tailored to its specific pressure and flow conditions, ensuring reliable circuit isolation while maintaining versatility in multi-circuit flow management.
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 design effectively reduces or eliminates internal leakage by balancing fluid pressures within the valve, even under high hydraulic conditions.
Implementation Method 1
The buffer chambers communicate with the corresponding flow channels through the corresponding balance holes... effectively reduces or eliminates internal leakage by balancing fluid pressures within the valve
Data Source
AI summary
The application discloses a multi-way valve including a valve housing and a valve core rotatably mounted in the valve housing. The valve housing defines a plurality of valve ports, the valve core defines a plurality of flow channels, each of which has two ends adapted to be respectively aligned with and in fluid communication with two of the valve ports of the valve housing. A plurality of buffer chambers is formed between the valve housing and the valve core. The buffer chambers are in fluid isolation from each other. The valve core is provided with a plurality of balance holes, each of which is in fluid communication with one of the flow channels. The buffer chambers communicate with the corresponding flow channels through the corresponding balance holes.