Evaporator and defrosting device thereof

Abstract

The invention discloses an evaporator and a defrosting device thereof. The defrosting device of the evaporator comprises an electromagnetic heating module and a metal heating unit matched with the electromagnetic heating module. Through arrangement of the electromagnetic heating module and the metal heating unit matched with the electromagnetic heating module, by virtue of an electromagnetic induction principle, when the electromagnetic heating module works, an alternating magnetic field is generated around the electromagnetic heating module, and when magnetic lines of the alternating magnetic field pass through the metal heating unit, large eddy current is generated inside the metal heating unit to enable the metal heating unit to generate heat so as to heat and defrost; the metal heating unit can be set into a proper form in a matching way according to the size and the shape of the evaporator, so that overall heating of the evaporator is achieved, the defrosting efficiency is improved and the energy consumption is reduced.

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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