Pressure-Release Sealing Cap with Ramp Guide Stud
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Solution Overview
Problem
Existing pressure-release sealing caps for radiators and surge tanks often lead to accidental discharge of hot coolant due to rapid pressure release, posing safety risks, and require significant user effort to manage pressure, especially when removing the cap from a hot and pressurized system.
Innovation Solution
A pressure-release sealing cap with a vertically movable and rotatable pressure-release member that is actuated indirectly, utilizing a ramp and guide stud mechanism to gradually equalize internal pressure with atmospheric pressure before cap removal, reducing manual effort and exposure to hot surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the sealing cap is removed rapidly from the radiator, then the cap removal process is quick and efficient, but the excessive pressure inside the reservoir causes sudden discharge of hot coolant leading to burns and projectile ejection
Solution Approach 1:
The patent applies preliminary action by incorporating a pressure-release valve that automatically opens before the cap is fully removed. This valve equalizes the pressure inside the reservoir with atmospheric pressure in advance, preventing sudden coolant discharge when the cap is finally removed. The pressure-release mechanism activates prior to the main cap removal action, eliminating the harmful effect of pressurized hot coolant ejection.
2Reliability
If a non-rotatable lever is provided on the cap to release excess pressure, then pressure can be released before cap removal, but the limited surface area requires considerable user effort and exposes user to hot surfaces
Solution Approach 1:
The patent applies self-service by designing an automatic pressure-release valve that operates without direct user intervention. The valve automatically detects and releases excess pressure through a spring-loaded mechanism or weighted valve system, eliminating the need for users to manually lift levers or apply force to hot surfaces. The system serves itself by using the pressure differential to activate the release mechanism.
Solution Approach 2:
The patent uses an intermediary mechanism in the form of a pressure-release valve positioned between the user and the hot pressurized coolant. This intermediary automatically mediates the pressure release process, preventing direct user contact with hot surfaces while maintaining reliable pressure control. The valve acts as a buffer that translates pressure conditions into automatic release actions without requiring user effort.
3Stability of the object's composition
If a tab is provided to lock the cap and prevent accidental rotation, then cap stability is improved, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by separating the cap into functional segments: a main cap body for sealing and a distinct pressure-release valve mechanism. The stability function is achieved through the cap's threaded engagement and sealing surfaces, while the pressure-release function is handled by the separate valve component. This segmentation allows each part to perform its specific function without adding unnecessary complexity to the overall structure.
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 cap ensures a controlled and gradual release of excess pressure, preventing accidental ejection and spillage of hot coolant, while minimizing user effort and ensuring safety during cap removal.
Implementation Method 1
The ramp is a circular gradient with substantially flat first reference portion and a second reference portion with a highest gradient. The guide stud is arranged to rotate on the ramp on rotation of the enclosure to lift the valve means and to release the excess pressure
Data Source
AI summary
A pressure-release sealing cap for a reservoir includes a rotatable platform with a ramp connected to a rotatable enclosure. A movable plunger is connected to a movable pressure-release member with a guide stud and a valve. The guide stud disposed is on the ramp between first and second reference portions of the ramp, while the sealing cap is installed on the reservoir and the guide stud disposed to rotate on the ramp on rotation of the enclosure to lift the valve, to release the excess pressure while concurrently removing the sealing cap from the reservoir. The pressure-releasing member is actuated indirectly to release excess pressure from the reservoir, in a controlled and gradual manner.