Water heater with automatic cleaning function and ultrasonic cleaning device thereof

The invention discloses a water heater with an automatic cleaning function and an ultrasonic cleaning device of the water heater, and relates to the technical field of water heaters, in particular to the water heater with the automatic cleaning function and the ultrasonic cleaning device of the water heater. A supporting plate is fixedly arranged in the air bag in a sleeved mode. According to the water heater with the automatic cleaning function and the ultrasonic cleaning device of the water heater, limiting strips are fixedly installed at the four corners of an inner cavity of the water tank, air bags are movably sleeved with the four limiting strips, meanwhile, a supporting plate is fixedly installed in the air bags, and a control module, a power supply wire and an ultrasonic transmitting end are installed above the supporting plate; during use, the air bag and the supporting plate can conveniently drive the ultrasonic transmitting end to remove scale on the inner wall of the water tank in real time along