Pressure Regulator Valve Sealing Layout for Gas Venting
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Solution Overview
Problem
The existing pressure regulator valves face issues with pressure increase due to gas leakage, which can lead to damage and deterioration of the valve's functionality, as the waterproof seals also prevent gas leakage, causing accumulated gas to lift the supporting portion.
Innovation Solution
A pressure regulator valve design that includes a housing with a base, tubular body, and cover, featuring a valve element, biasing unit, first and second sealing members, where the second sealing member, made of synthetic rubber or porous material, is positioned to prevent liquid ingress while allowing gas release to the atmosphere, thereby preventing pressure increase.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a waterproof seal is provided between the cover and the housing block to prevent liquid ingress, then waterproof performance is improved, but gas leakage is also prevented causing pressure increase that may damage the valve
Solution Approach 1:
The patent divides the sealing function into two separate sealing members: a first sealing member (gas seal) positioned between the base and body to seal the valve passage, and a second sealing member (waterproof seal) positioned between the base and cover to prevent liquid ingress. This segmentation allows each sealing member to perform its specific function independently, enabling gas to pass through the first seal while blocking liquid at the second seal, thus resolving the contradiction between waterproof performance and pressure relief.
Solution Approach 2:
The patent introduces an atmosphere communication hole as an intermediary pathway that allows gas to escape to the atmosphere. This intermediary channel provides a controlled path for gas release that does not compromise the waterproof sealing, as the communication hole is specifically designed to allow gas passage while maintaining liquid barrier functionality through the second sealing member.
2Reliability
If the second sealing member is positioned to contact the body for effective sealing, then waterproof performance is improved, but gas flow path is blocked causing pressure accumulation
Solution Approach 1:
The patent segments the sealing and gas release functions by positioning the second sealing member away from the body, creating a gap between them. This spatial segmentation allows the second sealing member to maintain waterproof sealing at the cover-base interface while simultaneously permitting gas to flow through the gap to the atmosphere communication hole, thus resolving the contradiction between effective sealing and gas release functionality.
3Object-affected harmful factors
If the waterproof seal contacts the outer peripheral surface of the flange to seal the gap, then liquid ingress is prevented, but gas leakage is also prevented causing the supporting portion to be lifted
Solution Approach 1:
The patent segments the sealing function into two distinct locations: the first sealing member seals the valve passage between base and body, while the second sealing member prevents liquid ingress between base and cover. This segmentation allows gas to potentially leak from the first seal but be directed to the atmosphere communication hole, while the second seal maintains liquid barrier without blocking gas escape paths, thus preventing supporting portion lift and maintaining structural integrity.
Solution Approach 2:
The patent extracts the gas release function from the sealing system by introducing a separate atmosphere communication hole that is independent of the waterproof sealing mechanism. This extraction allows the second sealing member to focus solely on liquid ingress prevention without the constraint of blocking gas escape, as gas can freely exit through the separately provided communication hole, thereby preventing supporting portion lift.
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 solution effectively prevents pressure increase while maintaining waterproof performance by allowing gas to be released to the atmosphere and preventing liquid ingress, thus ensuring the valve's functionality and durability.
Implementation Method 1
the second sealing member, made of synthetic rubber or porous material, is positioned to prevent liquid ingress while allowing gas release to the atmosphere
Data Source
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AI summary
A pressure regulator valve includes: a housing including a base, a cover, and a body; a valve element configured to open and close a valve passage by moving between a closed position and an open position, the valve element being further configured to reduce a primary pressure to a secondary pressure and receive the secondary pressure by which the valve element moves toward the closed position; a biasing unit accommodated in an accommodating space formed between the body and the cover, the biasing unit being configured to bias the valve element such that the valve element moves toward the open position; a first sealing member provided at a gap between the base and the body; and a second sealing member provided a gap between the base and the cover and made of synthetic rubber. The second sealing member is arranged away from the body.