Air conditioner with chassis defrosting device

The utility model discloses an air conditioner with a chassis defrosting device, which relates to the technical field of air conditioners and comprises an air conditioner, an external unit of the air conditioner and a connecting pipe component. The connecting pipe assembly is composed of a tee joint, a first connecting pipe, an electromagnetic valve, a second connecting pipe, a third connecting pipe, an electronic expansion valve and a one-way valve, and the assembly is connected to the electromagnetic valve, the second connecting pipe and the third connecting pipe on the exhaust pipe through the tee joint and the first connecting pipe and is fixed to the outdoor unit chassis. The chassis is deiced through a high-temperature refrigerant, freezing on the chassis is avoided, the heating effect of the air conditioner in the heating season of a user is improved, the refrigerant connecting pipe on the chassis is effectively fixed through a structural part, potential safety hazards caused by an electric heating dev