Faucet Filter Sight Glass Microprocessor Gallon Counter
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Solution Overview
Problem
Faucet-mounted water filters are limited to using filter cartridges with specific capacity ratings, requiring separate devices for different contaminant types and capacities, leading to inefficiency and increased costs for consumers.
Innovation Solution
A faucet-mounted filter device with a programmable microprocessor that counts gallons of water treated, allowing for the use of filter cartridges with different capacity ratings and enabling users to visualize remaining capacity through a transparent window, facilitating the use of various contaminant-specific cartridges in a single device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the microprocessor is programmed to recognize only one capacity rating and resets to that one capacity rating, then the device can be simplified and manufactured more easily, but the device cannot accommodate filter cartridges with different capacity ratings
Solution Approach 1:
The microprocessor programming is made dynamic by allowing users to input different capacity ratings through a user interface. The system adapts its counting behavior based on user input rather than being fixed to a single predetermined rating, enabling compatibility with various filter cartridge types while maintaining a relatively simple hardware architecture.
Solution Approach 2:
The system allows users to change the capacity rating parameter through an input interface. By enabling users to program different capacity values into the microprocessor, the device can accommodate filter cartridges with different ratings without requiring hardware modifications or complex multi-programming scenarios.
2Reliability
If a flow-reactive sensor and electronic indicator system are used to track filter usage, then users can be alerted when the filter cartridge should be changed, but the device complexity increases
Solution Approach 1:
The filter cartridge itself serves as the monitoring element. As water flows through the cartridge, it physically moves or changes position in proportion to the volume of water treated. This self-measuring mechanism eliminates the need for separate flow sensors and electronic counters, providing reliable usage tracking through simple mechanical means.
Solution Approach 2:
The patent replaces complex electronic flow sensing and digital counting systems with a simple mechanical indicator system. The filter cartridge's physical movement directly drives a visual indicator that shows usage progress, substituting electronic complexity with straightforward mechanical functionality while maintaining reliability.
3Reliability
If multiple indicators are used to provide early warning and complete exhaustion alerts, then users receive timely notifications, but the device complexity and cost increase
Solution Approach 1:
The indicator system uses color changes to communicate different filter usage states. A single visual element changes color or displays different colored segments to indicate both early warning and complete exhaustion conditions, eliminating the need for multiple separate indicators while providing comprehensive notification functionality.
Solution Approach 2:
The notification system transitions from using multiple discrete indicators to a single indicator that provides information across different visual dimensions. By encoding multiple states (early warning, complete exhaustion) within one multi-state visual element, the system reduces component count while maintaining reliable notification accuracy.
Data Source
AI summary
A faucet mounted filter device includes a horizontally disposed cylindrical part for housing a replaceable filter cartridge and a horizontally disposed arm part extending radially from the cylindrical part which has a connector on its upper side for releasable connection to a downwardly discharging water faucet. A window is provided in the cylindrical part through which the water filtration capacity gallonage is visible. A built in microprocessor with a counter delivers data to a read-out at the front end of the cylindrical part which displays the gallonage of water filtered by the filter cartridge. A sensor connected to the microprocessor senses flow of filter water and installation and removal of the cartridge causes the counter to start counting and to return to zero, respectively.