Appliance Safety Sensor with Exhaust Monitoring Relay
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Solution Overview
Problem
Existing safety devices for appliances do not effectively detect burning conditions and automatically shut off power to prevent fires, especially in kitchen appliances where smoke detection is critical but often requires user intervention.
Innovation Solution
A safety sensor device comprising a sensor unit positioned near the exhaust area of an appliance to monitor air for burning conditions, linked to a relay unit that electrically connects and disconnects the appliance's power supply, transitioning to an OFF state if burning conditions are detected, thereby preventing further heating and potential fires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a safety sensor device is integrated into the appliance to automatically detect burning conditions and shut off power, then fire prevention capability is improved, but device complexity increases
Solution Approach 1:
The patent combines the smoke detection function and power control function into a single integrated safety sensor device. The sensor unit detects smoke particles in the air, and the relay unit automatically interrupts power supply based on sensor output, merging multiple safety functions into one compact device that can be easily installed in kitchen appliances.
2Measurement precision
If the sensor unit is positioned close to the exhaust area for effective smoke detection, then detection sensitivity is improved, but the device becomes more difficult to install
Solution Approach 1:
The safety sensor device is divided into separate functional modules: a sensor unit for smoke detection and a relay unit for power control. This segmentation allows the sensor unit to be positioned optimally near the exhaust area for high detection sensitivity, while the relay unit can be installed elsewhere in the electrical circuit, making overall installation more flexible and easier.
3Reliability
If the device automatically shuts off power without user intervention, then safety effectiveness is improved, but loss of user control increases
Solution Approach 1:
The safety sensor device incorporates automatic feedback control where the sensor continuously monitors air quality and the relay unit automatically responds by interrupting power supply when smoke is detected. This closed-loop feedback system provides effective automatic safety protection without requiring user intervention, while the automatic reset capability allows users to easily restore power after addressing the issue.
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 device effectively prevents appliance fires by automatically shutting off power when burning conditions are detected, reducing the risk of smoke spreading and fire, while being easy to install and requiring no change in cooking behavior.
Implementation Method 1
a sensor configured to monitor air emanating from the exhaust area of the appliance
Implementation Method 2
a sensor unit comprising a sensor configured to monitor exhaust air from an appliance
Data Source
AI summary
A safety sensor device for an appliance detects burning conditions and shuts off power to the appliance. The device includes a sensor unit positioned near an exhaust of the appliance, and a relay unit connected along a power supply path to the appliance. The relay and sensor units are linked. The sensor unit includes a sensor for monitoring exhaust air from the appliance. The relay unit includes a circuit that electrically connects the appliance with a power source while in an ON state and electrically disconnects the appliance from the power source while in an OFF state, the circuit being responsive to the sensor unit to transition from the ON state to the OFF state if the sensor detects burning conditions.