▎ 摘　　要

NOVELTY - The utility model claims a refrigerating device such as large refrigerator, freezer, heat pump water heater and air conditioner for defrosting the evaporator electric heating device. it comprises an evaporator, a graphene composite material electric heating body, graphene composite material electric heating body set around the evaporator, the graphene composite material electric heating body is provided with a leading-out wire, graphene composite material electric heating body outer surface is provided with an insulating layer, a lead-out conductor passes through the insulating layer. The utility model is simple and reasonable structure design, fully using graphene composite material of low resistance, good heating effect, light weight, easy deformation, good waterproof performance and so on, it is applied to defrosting the evaporator, that is, it improves the defrosting effect and reduces the power of the auxiliary heating body and largely improve the energy efficiency ratio of the refrigeration device. especially the second technical solution, the graphene composite material electric heating body is set in the evaporator, the defrosting effect is better, because the radiation distance is short, the graphene composite material electric heating power can be set lower.