Dual Valve Plate Flow Control for Leak-Resistant Heat Exchange
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional flow rate control devices in thermal management systems for electric vehicles suffer from internal leakage due to deformation or damage of rubber sealing rings, leading to degraded sealing performance over time.
Innovation Solution
A flow rate control device with a housing and valve body assembly featuring a first valve plate and a second valve plate, where the second valve plate is movable relative to the first valve plate, allowing for proportional flow rate regulation and improved sealing through surface contact and a position-limiting protrusion, enhancing internal sealing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rubber sealing ring is used in the piston valve, then the device can be manufactured with simpler materials and processes, but the sealing performance degrades over time due to excessive deformation or damage when pressed by the movable valve body
Solution Approach 1:
The patent changes the material parameter of the sealing ring from rubber to PTFE (polytetrafluoroethylene). PTFE has superior chemical stability, lower compression set, and better resistance to deformation under pressure compared to rubber. This material substitution resolves the contradiction by maintaining sealing performance throughout the service life without the degradation issues of rubber materials.
Solution Approach 2:
The patent employs PTFE, an advanced fluoropolymer material, which combines multiple desirable properties including low friction, high chemical resistance, and excellent sealing characteristics. This composite material approach allows the sealing ring to withstand prolonged compression from the movable valve body without deforming or damaging, thereby maintaining reliable sealing over extended periods.
2Ease of operation
If the second valve plate is made movable relative to the first valve plate, then proportional flow rate regulation can be achieved, but the device complexity increases
Solution Approach 1:
The patent divides the valve body into two separate movable valve plates (first valve plate and second valve plate) that can move independently relative to each other. This segmentation allows each plate to control different aspects of flow regulation, enabling proportional flow rate control through their relative movements while keeping each individual plate's structure simple and manageable.
Solution Approach 2:
The patent introduces dynamic movement capability between the two valve plates, where the second valve plate can move relative to the first valve plate. This dynamic configuration enables continuous adjustment of flow rates by varying the relative position of the plates, providing proportional regulation functionality without requiring complex mechanical mechanisms.
Data Source
AI summary
A flow control device used in a vehicle heat exchange system and a method for manufacturing the same are provided. The flow control device includes a housing and a valve body assembly. The valve body assembly comprises a first valve plate, a second valve plate, and a transmission n part. The housing has an accommodating portion and a protruding limiter, in which the protruding limiter circumferentially limits the first valve plate, a lower side surface of the second valve plate (22) is disposed opposite to the protruding limiter, and at least a part of the lower side surface of the second valve plate is in contact with the first valve plate. The transmission part drives the second valve plate to open or close the circulating valve port of the first valve plate and/or adjust the opening degree of the circulating valve port, such that the product sealing performance can be improved.