Coffee Machine Ion-Specific Sensor Array for Water Quality Control
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Solution Overview
Problem
Existing coffee machines face issues with water quality, leading to poor coffee taste and machine inefficiency due to high salt levels, which current water treatment systems fail to address effectively, and require frequent and costly maintenance, with existing sensors being generic and not specifically measuring individual ions affecting coffee taste.
Innovation Solution
A coffee machine design with sensors installed downstream of the filter unit in the water system, measuring specific water quality parameters like pH, TDS, alkalinity, calcium, magnesium, and chlorine, allowing for continuous monitoring and alerting when parameters exceed preset thresholds, thus enabling timely filter replacement and preventing damage to machine components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If generic sensors are used to measure total ion quantity, then the device complexity is reduced, but the measurement precision is insufficient to detect specific ions affecting coffee taste
Solution Approach 1:
The patent segments the water quality measurement function into multiple specialized sensors, each dedicated to detecting a specific ion (calcium, magnesium, potassium, sodium, chloride, sulfate, nitrate). This segmentation enables precise detection of individual ions that affect coffee taste, rather than using a single generic sensor that only measures total ion quantity.
Solution Approach 2:
The patent introduces a microprocessor as an intermediary that receives signals from multiple ion-specific sensors, processes the individual ion measurements, and determines overall water quality. This intermediary coordinates the complex sensor network and translates individual ion data into actionable quality assessments.
2Reliability
If filters and softeners are installed in the water system, then water quality is improved, but the device complexity increases and maintenance requirements increase
Solution Approach 1:
The patent replaces mechanical water treatment systems (filters and softeners) with an electronic monitoring system consisting of multiple ion-specific sensors and a microprocessor. Instead of physically removing ions through filtration, the system electronically detects and monitors individual ion concentrations to assess water quality, thereby maintaining reliability while reducing mechanical complexity.
Solution Approach 2:
The patent implements a feedback mechanism where the microprocessor continuously monitors ion concentrations through the sensor network and uses this information to determine water quality. This feedback loop enables real-time quality assessment without requiring physical filtration components, reducing system complexity while maintaining reliable quality control.
3Ease of operation
If filters are not replaced timely, then operational simplicity is maintained, but harmful factors increase due to excessive lime deposits and clogging
Solution Approach 1:
The patent implements a feedback mechanism where the microprocessor continuously monitors ion concentrations through the sensor network and uses this information to determine water quality. This feedback loop enables real-time quality assessment without requiring physical filtration components, reducing system complexity while maintaining reliable quality control.
Solution Approach 2:
The patent replaces mechanical water treatment systems (filters and softeners) with an electronic monitoring system consisting of multiple ion-specific sensors and a microprocessor. Instead of physically removing ions through filtration, the system electronically detects and monitors individual ion concentrations to assess water quality, thereby maintaining reliability while reducing mechanical complexity.
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 solution ensures the production of high-quality coffee by accurately monitoring and maintaining optimal water parameters, reducing maintenance costs and frequency, and preventing machine damage, while allowing for efficient and reliable operation over time.
Implementation Method 1
measuring at least one quality parameter of the water contained in the tank, which corresponds to at least one quality parameter of the filtered water
Implementation Method 2
measuring at least one quality parameter of the water contained in the tank, which corresponds to at least one quality parameter of the filtered water
Data Source
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AI summary
Coffee machine (100) comprising: a water system (1) intended to be connected to a water supply system (2), a filter unit (3) disposed at the inlet of the water system (1), a pump (4), a tank (10) disposed in the water system (1) between the filter unit (3) and the pump (4), a sensor unit (11) disposed in the tank (10) and suitable for measuring at least one quality parameter of the water contained in the tank (10), a monitoring unit (16) electrically connected to the sensor unit (11) to receive electrical signals that are indicative of the measured water quality parameters, transduce the electrical signals in numerical values and compare the numerical values of the measured parameters with preset threshold ranges; and a user interface (18) operatively connected to the monitoring unit (16) and comprising an alarm (19) to indicate when a water parameter is out of the preset threshold range.