Double-Walled Safety Workbench Trough for Leak Containment
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Solution Overview
Problem
Existing safety workbenches with single-walled floor troughs are prone to leaks, posing a risk of contamination to the surroundings, even after model testing, as leaks may go undetected during use, posing a hazard to operating personnel and the environment.
Innovation Solution
A double-walled floor trough with an internal and external wall enclosing an intermediate chamber, where at least one wall has an opening connected to means for generating a partial vacuum, capturing contaminants and preventing their escape, and using existing ventilation system fans or pumps to maintain the vacuum, with optional filtration and alarm systems for damage detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single-walled floor trough is used, then the device complexity is reduced and manufacturing is easier, but the reliability and contamination protection are insufficient
Solution Approach 1:
The patent implements a double-walled floor trough where an inner wall is nested within an outer wall, creating an intermediate chamber between them. This nested structure provides redundant protection against contamination while maintaining a relatively compact overall design.
Solution Approach 2:
The floor trough is segmented into distinct functional layers: an inner wall for primary containment, an intermediate chamber for vacuum sealing and contamination capture, and an outer wall for structural support and external sealing. This segmentation allows each layer to perform its specific function optimally.
2Reliability
If a double-walled floor trough with partial vacuum is implemented, then the reliability and contamination protection are improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The nested double-walled structure allows the inner wall to be fabricated and tested separately before assembly into the final configuration with the outer wall, simplifying the manufacturing process while maintaining the enhanced reliability benefits.
Solution Approach 2:
The intermediate chamber acts as an intermediary space that provides vacuum sealing between the inner and outer walls. This intermediary layer simplifies the manufacturing process by allowing independent fabrication of wall components that are then assembled with sealing elements, rather than requiring a single complex monolithic structure.
3Reliability
If model testing is performed to ensure no leaks, then the initial reliability is improved, but leaks may still occur during use and go unrecognized
Solution Approach 1:
The patent incorporates monitoring means that provide continuous feedback on the integrity of the floor trough sealing. This feedback mechanism allows for the detection of leaks during operation, enabling timely response to maintain reliability.
Solution Approach 2:
The double-walled structure with vacuum sealing provides a beforehand protective layer that cushions against potential leaks. If a leak occurs in the inner wall, the intermediate chamber and vacuum system prevent immediate contamination, providing a buffer for detection and response.
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 double-walled design significantly reduces the risk of contamination by requiring two walls to be compromised before external leakage occurs, and the partial vacuum effectively captures and removes contaminants, preventing environmental contamination and alerting users to potential damage through monitoring systems.
Implementation Method 1
at least one of the walls having at least one opening which is connected to means for generating the partial vacuum
Implementation Method 2
The partial vacuum ends at the surface of the floor trough, which forms the lower terminus of the working inner chamber, facing toward the working chamber
Data Source
AI summary
The present invention relates to a safety workbench having a working inner chamber enclosed by a housing, whose bottom terminus is formed by a floor trough and which is accessible on a housing front side via a work opening closable using an adjustable front pane. The floor trough is implemented as double-walled and has an internal and an external wall, which enclose an intermediate chamber, which may be placed under vacuum, between them, at least one of the walls having at least one opening which is connected to means for generating the partial vacuum.