Modular Explosion-Proof Assembly with Dissipation Walls
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Solution Overview
Problem
Existing electrical devices lack a versatile, cost-effective, and universally applicable explosion-proof enclosure that can safely operate in various hazardous environments, including those with flammable vapors and ignitable dusts, without being permanently coupled to the device, and must meet stringent international safety standards.
Innovation Solution
A modular explosion-proof assembly comprising a releasably coupled enclosure with a touchscreen interface, designed to house mobile devices like tablets or phones, which includes a dissipation wall configuration to extinguish flames and meet Class I Division 2, Class II Division 2, Zone 2, and other hazardous area classifications, ensuring safe operation and adaptability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional explosion-proof enclosure is used, then safety in hazardous areas is improved, but cost and device complexity increase
Solution Approach 1:
The enclosure is divided into a first portion and a second portion that can be separately assembled and disassembled. The first portion includes a rear face, outer edge, inner edge, dissipation wall, and window, while the second portion includes an inner surface with dissipation wall features. This segmentation allows for simplified manufacturing, easier certification for specific hazard classes, and the ability to reuse portions across different device configurations.
2Reliability
If an explosion-proof enclosure is permanently coupled to the electrical device, then safety is improved, but adaptability and ease of repair worsen
Solution Approach 1:
The coupling between the first and second portions is made dynamic rather than permanent. The portions can be releasably coupled together to form the complete enclosure, allowing the enclosure to be disassembled for device replacement, repair, or adaptation to different electrical devices while maintaining explosion-proof integrity when properly assembled.
3Reliability
If a custom explosion-proof enclosure is designed for each electrical device, then safety and precision are improved, but manufacturing cost and complexity increase
Solution Approach 1:
The first and second portions of the enclosure are designed as universal components that can accommodate multiple different electrical devices. The standardized interface and dissipation wall configuration allow the same enclosure portions to be used across different device types and manufacturers, reducing manufacturing costs and simplifying production while maintaining safety certification for various hazard classes.
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 allows for safe use of mobile devices in hazardous areas by preventing the release of sparks or thermal energy, meeting stringent safety standards, and enabling operation in multiple hazardous environments without the need for permanent attachment, enhancing operational efficiency and safety.
Implementation Method 1
a dissipation wall configuration to extinguish flames
Data Source
AI summary
An explosion proof assembly that includes a first portion with a window; an outer touchscreen adhesively sealed around a perimeter of the first portion rear face; and a second portion releasably coupled to the first portion. The second portion has a second portion inner surface defined by a second portion inner edge that transitions into a first dissipation wall. The first portion has a second dissipation wall. The assembly includes a mobile device operable via a mobile device touchscreen. Upon assembly, the outer touchscreen is transmissive to the mobile device touchscreen.