The invention relates to a range hood system comprising a sensor module and a fan for ventilating cooking fumes. The sensor module comprises sensors for measuring air qualities. These sensors might include temperature, humidity, and TVOC/VOC (Total Volatile Organic Compounds/ Volatile Organic Compounds) sensors. The sensor module includes a microcontroller, which receives signals from those sensors. In such a system, the microcontroller executes a program to perform a set of operating modes to analyze the signals. Therein the microcontroller determines whether to switch ON/OFF state of the fan and its speed based on the analysis of the signals, e.g., comparing the real-time measured data and the previous stored data. To be more specific, the program based on an autosensing algorithm performs automatically controlling the sensors, collecting the measuring data in real-time, and automatically driving the fan in response to different cooking scenarios or cooking states according to the analyzing results. The range hood system also provides with a user interface unit, which allows the user to obtain current environmental conditions and choose their preference modes from the program.
By automatically reducing fan speed when needed and turning the fan OFF in a timely manner, energy savings are achieved. Furthermore, the optimized and automatic response of the fan ensures proper ventilation and preserves safe ambient conditions.
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Mohr, Christian, "Autosense hood_ID-05789", Technical Disclosure Commons, (October 20, 2021)