当厨房中的油烟或可燃有害气体达到一定浓度时，经过传感器进入单片机分析，

When the kitchen fumes harmful or combustible gas reaches a certain concentration, analysis through the sensor into the microcontroller, the circuit automatically when the motor starts and alerts, harmful gas hood quickly pumped.

When the kitchen smoke or flammable harmful gases reach a certain concentration, after the sensor into the microcontroller analysis, when the motor circuit automatically starts and issues an alarm, the fume machine quickly will be harmful gas to smoke away.

When the lampblack or combustible harmful gas in the kitchen reaches a certain concentration, the sensor enters the single-chip microcomputer for analysis, and the motor circuit automatically starts and gives an alarm, and the lampblack machine quickly draws out the harmful gas.