Integral Eyewash and Faucet with Independent Water Supply
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Solution Overview
Problem
Conventional emergency eyewash stations integrated with faucets often face issues such as reduced or zero water flow when the faucet's water supply is reduced, requiring multiple hand movements to activate, and costly installation procedures, especially in laboratory settings with difficult-to-penetrate decks.
Innovation Solution
An integral eyewash and faucet system with a single deck penetration, utilizing internal porting for independent water supply, where the eyewash is directly connected to a separate cold water source, preventing hot water from reaching the eyewash and allowing for a single force activation, with optional integration of a water fountain, reducing installation costs and ensuring consistent water flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If eyewash is coupled to existing sink faucet, then installation is simpler, but water flow to eyewash may be reduced or shut off
Solution Approach 1:
The patent divides the water supply system into separate independent lines: one for the faucet and another dedicated line for the eyewash. This segmentation ensures that the eyewash has its own reliable water source independent of the faucet supply, resolving the contradiction between installation simplicity and water flow reliability.
Solution Approach 2:
The patent introduces an intermediary mechanism (separate valve and piping system) between the main water supply and the eyewash, allowing independent control and flow assurance. This intermediary structure enables the eyewash to maintain reliable water flow while still being integrated with the faucet system.
2Measurement precision
If eyewash requires multiple hand movements to activate, then control precision is improved, but response time in emergency is worsened
Solution Approach 1:
The patent merges the activation control of the eyewash with the faucet handle operation. A single handle controls both functions, allowing users to activate the eyewash with one motion while maintaining precise control over both water flows. This resolves the contradiction by combining controls rather than requiring separate activations.
3Adaptability or versatility
If separate faucet handles are mounted on columnar posts, then functional independence is improved, but installation cost and complexity increase
Solution Approach 1:
The patent designs the faucet assembly with multi-functional capability where a single integrated structure provides both faucet and eyewash functions. The columnar post and handle assembly serves multiple purposes: supporting the faucet, providing eyewash activation, and controlling both water flows. This universality maintains functional independence while reducing installation complexity.
4Ease of manufacture
If single deck penetration is used, then installation cost is reduced, but structural support for both functions must be integrated
Solution Approach 1:
The patent merges the structural support functions into a single integrated columnar assembly that penetrates the deck once. This combined structure supports both the faucet and eyewash mechanisms, providing structural integrity for both functions while requiring only one deck penetration, thereby reducing installation cost and complexity.
Data Source
AI summary
An integrated columnar structure is connected to hot and cold water supplies. On the structure is separately mounted on eyewash and faucet. In an alternative embodiment a water bubbler can be substituted for the eyewash. Water passageways within the columnar structure separately supply the appropriate temperature water to the faucet and eyewash/bubbler. Valving mounted on the columnar structure, preferably with an angle oriented at an acute angle to the axis of the column, controls the temperature of water supplied to the faucet. Cold, or slightly tempered, water is supplied to the eyewash.