Automatic-cleaning range hood and control method thereof

An automatic-cleaning range hood comprises a controller (1) and a cleaning device, the cleaning device comprises a spraying device and a water flow channel connected with a water source, and a water flow detecting device (2), a water pump (3) and a heater (4) are connected to the water flow channel in series and connected with the controller (1).The water flow detecting device (2) is used for detecting the water flowing into the water flow channel, the water pump (3) is an adjustable-flow water pump, he heater (4) is an adjustable-heating-power heater, and the controller (1) is used for adjusting the water pumping flow of the water pump and/or the heating power of the heater so that the cleaning device can generate complete steam.A control method includes the steps that the cleaning function is started, the water pump works under the maximum pump output, the controller controls the heater to work under heating power corresponding to the maximum pump output of the water pump, different water flows can be match