Filter screen cleaning device for air conditioner, control method and device and air conditioner

The invention relates to the technical field of intelligent household appliances, and discloses a filter screen cleaning device for an air conditioner, a control method and device and the air conditioner. An indoor unit of the air conditioner comprises a shell, an evaporator is arranged in the shell, an air inlet is formed in the upper portion of the shell, and a filter screen is arranged at the air inlet. The electrostatic film winding and unwinding assembly is arranged on the shell and used for covering the upper portion of the filter screen with an electrostatic film when the filter screen is cleaned and recycling the electrostatic film from the upper portion of the filter screen after the filter screen is cleaned; and the ultrasonic transmitting assembly is arranged in the shell, faces the evaporator and is used for transmitting cleaning ultrasonic waves to the evaporator when the filter screen is cleaned. According to the filter screen cleaning device, the filter screen can be cleaned only by controlling