Heat-Resistant Rubber Ventilation Valve for High-Temperature Housing
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Solution Overview
Problem
Existing pressure compensating devices lack detailed studies on the material of their elastic bodies, particularly in terms of heat resistance, which is crucial for high-temperature environments and explosion prevention.
Innovation Solution
A ventilation component with a gas-permeable membrane and a ventilation valve formed from a rubber with a specific heat-resistant material, where the elastic body's breaking strength is maintained across temperature changes, ensuring reliable operation in high-temperature environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional elastic materials are used in the pressure release valve, then the device can be manufactured with standard materials, but the heat resistance and reliability in high-temperature environments deteriorates
Solution Approach 1:
The patent applies parameter changes by specifying precise material properties - the elastic body must have a breaking strength of 5-10 MPa and a specific rate of change in breaking strength (90-110%) when heated according to JIS K 6257:2010 Method A. These parameter specifications ensure the rubber material maintains reliable sealing and valve operation in high-temperature environments up to 150°C or higher, resolving the heat resistance issue while maintaining manufacturability
Solution Approach 2:
The patent employs composite material strategy by selecting specific rubber compositions that combine heat resistance with elastic properties. The elastic body is formulated as a rubber material with controlled breaking strength characteristics, creating a composite solution that integrates sealing functionality with high-temperature stability, thereby improving reliability without sacrificing ease of manufacture
2Strength
If the elastic body material is not optimized, then manufacturing is simpler, but the breaking strength consistency and valve performance under thermal stress worsens
Solution Approach 1:
The patent resolves the manufacturing complexity issue by establishing clear parameter specifications for the elastic body material. The breaking strength must be 5-10 MPa with a rate of change of 90-110% under heating conditions. These quantified parameters provide manufacturers with precise material selection criteria, balancing strength requirements with manufacturing feasibility
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 ventilation component effectively discharges gas from a housing to prevent explosions by maintaining the pressure valve's operational integrity and reliability in high-temperature conditions, enhancing the overall safety and performance of the system.
Implementation Method 1
a gas-permeable membrane; ventilation between an inside of the housing and an outside of the housing is carried out via the gas-permeable membrane
Implementation Method 2
a ventilation valve that includes an elastic body, and that is opened and closed by elastic deformation of the elastic body
Data Source
AI summary
A ventilation component (1) includes a gas-permeable membrane (10), a ventilation valve (20), and a structural member (30). The ventilation component (1) is to be attached to a housing (2) having a ventilation opening (5). The ventilation valve (20) includes an elastic body, and is opened and closed by elastic deformation of the elastic body. The structural member (30) supports the gas-permeable membrane (10) and the ventilation valve (20). In an attached state where the ventilation component (1) is attached to the housing (2), ventilation between an inside of the housing (2) and an outside of the housing (2) is carried out via the gas-permeable membrane (10), and the ventilation valve (20) is opened to discharge a gas inside the housing 2 to the outside of the housing 2 when a difference between a pressure inside the housing (2) and a pressure outside the housing (2) is equal to or higher than a predetermined value. The elastic body included in the ventilation valve (20) is formed of a rubber whose rate of change in breaking strength is 95% to 120%.