Extractable Valve Seal for Coolant Pump Leakage
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Solution Overview
Problem
Existing valve groups in cooling pumps for vehicles fail to efficiently obstruct the passage of cooling liquid, leading to leakage between the valve group and the pump.
Innovation Solution
A valve group with an anti-leakage projection that minimizes or eliminates leakage by engaging with the pump housing, utilizing a cylindrical valve body with seals and an obturator that can switch between open and closed positions, and an anti-leakage projection that modifies the housing shape to create a tight seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a valve group is designed as an extractable cartridge from the pump, then ease of operation and maintenance are improved, but sealing reliability deteriorates due to leakage between the valve group and pump housing
Solution Approach 1:
An elastomeric sealing ring is introduced as an intermediary element between the valve group body and the pump housing. This sealing ring mediates the connection, providing reliable sealing while allowing the valve group to remain extractable. The elastomeric material deforms to fill gaps and prevent leakage of cooling liquid, resolving the contradiction between ease of extraction and sealing reliability.
Solution Approach 2:
The patent employs an elastomeric sealing ring - a flexible element that can deform to accommodate slight misalignments and create effective sealing. This flexible sealing solution allows the rigid valve group to be easily extracted while maintaining reliable sealing during operation, directly addressing the technical contradiction.
2Reliability
If sealing elements are added to prevent leakage, then sealing reliability is improved, but device complexity increases
Solution Approach 1:
A single elastomeric sealing ring is used to provide comprehensive sealing between the valve group body and the pump housing. This simple flexible element replaces complex multi-component sealing arrangements, improving reliability while minimizing the increase in device complexity. The elastomeric ring's ability to deform allows it to effectively seal various gap sizes and shapes.
Solution Approach 2:
The elastomeric sealing ring serves multiple sealing functions simultaneously - sealing between the valve group body and pump housing, and potentially sealing around the obturator shaft. This multi-functional approach improves overall sealing reliability without proportionally increasing device complexity, as one element performs multiple sealing tasks.
Data Source
Figure 1a~1b
Figure 2a~2b
Figure 3
AI summary
The present invention relates to a valve group (10) for a pump (1) of a cooling circuit, in particular for vehicles. Said pump comprises a pump body (2) having a housing compartment (200) defined by a wall (210) in which said valve group (10) is insertable in an extractable manner. The valve group (10) comprises a valve body (12) fitted with a through duct (14), through which the cooling liquid passes, and an obturator (30) suitable for obstructing, in a closed position, the passage of liquid through the duct (14). The valve group (10) further comprises at least one anti- leakage projection (120) projecting from the valve body (12) suitable to sealingly engage said wall (210).