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 leaks, which can damage the valve or deteriorate its function, while attempting to prevent water ingress, leading to a compromise in waterproof performance.
Innovation Solution
A pressure regulator valve design featuring a housing with a base, tubular body, and cover, utilizing a first sealing member between the base and body, and a second sealing member made of synthetic rubber or porous material between the base and cover, allowing gas release to the atmosphere while preventing liquid ingress, thus maintaining waterproof performance without 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 rain water ingress, then waterproof performance is improved, but gas leaking from the gas seal accumulates between the waterproof seal and gas seal causing pressure increase
Solution Approach 1:
The patent extracts the harmful accumulated gas from the sealed space by providing a pressure equalization hole that communicates the space between the gas seal and waterproof seal with the atmosphere. This allows the gas to escape and prevents pressure buildup while maintaining the waterproof seal's integrity.
Solution Approach 2:
The pressure equalization hole acts as an intermediary pathway that allows gas to pass from the sealed space to the atmosphere without compromising the waterproof seal. It mediates between the need for waterproofing and the need to release accumulated gas.
2Reliability
If the second sealing member is arranged close to the body to seal the gap between base and cover, then waterproof performance is improved, but gas leaks are blocked causing pressure increase
Solution Approach 1:
The patent extracts the harmful effect of gas accumulation by providing a pressure equalization hole that allows gas to escape from the space between the gas seal and the second sealing member, preventing pressure buildup while maintaining effective sealing.
Solution Approach 2:
The patent applies different sealing qualities at different locations: the first sealing member (gas seal) provides gas tight sealing, while the second sealing member provides waterproofing with intentional gap allowance, and the pressure equalization hole provides localized gas release capability.
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 ensuring waterproof performance by allowing gas leaks to be released to the atmosphere, thereby maintaining the integrity and functionality of the pressure regulator valve.
Implementation Method 1
a second sealing member provided between the base and the cover and made of synthetic rubber, wherein the second sealing member is arranged away from the body
Data Source
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.