Evaporator defrosting device and evaporator having the same

Abstract

Disclosed is an evaporator defrosting device and an evaporator (100) having the same. The evaporator defrosting device comprises an electromagnetic heating module (12) and a metal heating member matching with the electromagnetic heating module. This evaporator defrosting device uses an electromagnetic sensing principle. When the electromagnetic heating module (12) operates, an alternating magnetic field is generated therearound; when a magnetic line of force of the alternating magnetic field passes through the metal heating member, a large number of eddy currents are generated inside the metal heating member, so that the metal heating member is made to give out heat per se, and then the heating and defrosting are performed. The metal heating member can be set into an appropriate form on the basis of the cooperation between the size and the shape of the evaporator (100), thereby achieving the result the evaporator (100) is heated fully, improving the defrosting efficiency, and reducing the energy consumption.

Description

technical field [0001] The invention belongs to the technical field of household appliance manufacturing, and in particular relates to an evaporator defrosting device and an evaporator with the evaporator defrosting device. Background technique [0002] In the prior art, the automatic defrosting function of the refrigerator mostly uses a resistance heating device to heat the evaporator, and utilizes the heat conduction of the evaporator to defrost completely. Since a single heating device is generally used and the heating position is fixed, when the heating device works, it will first melt the frost in the lower part of the evaporator, and then melt the frost in the upper part of the evaporator through heat conduction. Therefore, it is inevitable that the part near the heating device at the bottom of the evaporator will be heated all the time. When the defrosting is over, the refrigerant in the evaporator and the refrigerant pipe will be overheated, which will inevitably cau...

AI Technical Summary

Problems solved by technology

Therefore, it is inevitable that the part near the heating device at the bottom of the evaporator will be heated all the time. When the defrosting is over, the refrigerant in the evaporator and the refrigerant pipe will be overheated, which will inevitably cause the temperature of the freezing room to rise, which will increase the temperature of the freezer. Refrigerator cooling capacity demand, which in turn increases energy consumption

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