▎ 摘　　要

NOVELTY - The utility model claims an indoor machine of air conditioner, comprising a shell and a PTC electric heater installed in the shell, the PTC electric heater comprises a heating pipe and several radiating fins, the radiating fin is provided with a mounting hole, the mounting hole is matched with the heating pipe, the heating pipe is inserted in the mounting hole of the radiating fin, several radiating fins are set on the heating pipe and distributed interval the length direction of the heating pipe; the radiating fin is coated with a graphene coating. The purpose of the utility model is to provide an indoor machine of air conditioner, comprising a surface provided with a graphene coating of PTC electric heater, so as to improve the radiating efficiency of the PTC electric heater.