Elastic Flameproof Housing Joint for Tolerance-Tolerant Sealing
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Solution Overview
Problem
Existing explosion-proof housings allow gas or particles to escape during explosions, potentially igniting the surrounding atmosphere, and require tight manufacturing tolerances to maintain flameproof gaps, increasing costs and complexity.
Innovation Solution
The housing design features a first and second section with faces that are pressed against each other under elastic deformation, forming a geometrically closed intermediate region that meets flameproof standards without requiring precise manufacturing tolerances, allowing for deviations in shape and size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tight manufacturing tolerances are used to maintain flameproof gaps, then explosion protection reliability is improved, but manufacturing complexity and costs increase
Solution Approach 1:
The patent employs an elastic sealing element (membrane) that deforms under pressure to dynamically seal the gap between housing parts during explosions. This flexible membrane approach replaces rigid precision-gap designs, allowing larger manufacturing tolerances while maintaining flameproof protection through elastic deformation that closes gaps when pressure differential occurs.
Solution Approach 2:
The patent changes the operational parameters of the sealing system by introducing pressure-dependent gap closure. The gap dimension is not fixed but dynamically adjusted based on pressure differential across the membrane, allowing the system to tolerate varied manufacturing tolerances while ensuring flameproof conditions are met during actual explosion scenarios.
2Reliability
If tight manufacturing tolerances are used to maintain flameproof gaps, then explosion protection reliability is improved, but production costs increase
Solution Approach 1:
The elastic sealing membrane allows housing parts to be manufactured with relaxed tolerances, significantly reducing machining costs and assembly complexity compared to precision-machined flameproof gaps. The membrane compensates for dimensional variations, making the manufacturing process more economical while maintaining safety.
Solution Approach 2:
The elastic sealing element can be designed as a replaceable, cost-effective component that ensures flameproof protection without requiring expensive precision manufacturing of the entire housing assembly. This approach prioritizes safety function over permanent precision structural features.
3Ease of operation
If gaps are allowed for housing assembly, then ease of assembly is improved, but risk of ignition of surrounding atmosphere increases
Solution Approach 1:
The elastic membrane acts as a dynamic barrier that remains open during normal assembly and operation, allowing ease of housing assembly and access. During explosions, the pressure differential causes the membrane to deform and seal the gap, preventing hot gases and particles from escaping and igniting the surrounding atmosphere.
Solution Approach 2:
The elastic sealing element is pre-positioned to seal gaps automatically when pressure differential occurs during explosions. This preliminary arrangement ensures that ignition risks are counteracted dynamically without requiring active control systems or complex mechanical closure mechanisms.
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
This design ensures effective containment of explosion gases and particles, reducing the risk of ignition while minimizing manufacturing complexity and costs, enabling compact and efficient housings with optimized inner volumes.
Implementation Method 1
the first section and the second section are pressed against one another under elastic deformation of the wall section, such that the intermediate region is geometrically closed in a flameproof manner due to the elastic deformation of the wall section
Data Source
AI summary
An explosion-proof housing, which forms an interior for accommodating components that can form ignition sources. The housing has a first housing part with a first section which has a first face, and a second housing part with a second section which has a second face, the first section and/or the second section being a section of a wall, the first face and the second face delimiting an intermediate region. The first section and the second section are pressed against each other with elastic deformation of the wall section so that the intermediate region is geometrically closed in a flameproof manner by the elastic deformation of the wall section. The invention also relates to a method for producing an explosion-proof connection between a first section of a first housing part with a first face and a second section of a second housing part with a second face of a housing, at least one of the sections being a section of a wall. The invention also relates to a further method for producing an explosion-proof connection between a first section of a first housing part with a first face and a second section of a second housing part with a second face of a housing, at least one of the sections being a section of a wall.