Self-cleaning device of heating ventilation air conditioner

The utility model discloses a heating ventilation air conditioner self-cleaning device which comprises a filter plate, side plates are arranged on the outer surfaces of the two sides of the filter plate, a storage assembly is arranged at the upper end between the two side plates, a cleaning assembly is arranged at the lower end of the storage assembly, and the storage assembly comprises a spray head, a liquid storage box and a material injection pipe. The spray head is located on the outer surface of the lower end of the liquid storage tank, the material injection pipe is located on one side of the outer surface of the upper end of the liquid storage tank, the spray head and the liquid storage tank are detachably connected, the cleaning assembly comprises a base, the base is arranged at the bottom end of a side plate, and moving grooves are formed in the two ends of the outer side of the side plate. Lifting grooves are formed in the front ends of the outer surfaces of the two sides of the moving groove, and a