Defrosting device of refrigerator evaporator

Abstract

This invention provides a defrost device of refrigerator evaporator, which comprises cold air pipe providing cold air inlet and outlet and making the cold air cycling, an evaporator setting in the cold air pipe, a fan setting in the cold air pipe which can be rotated right and reverse, and a motor driving the fan. The device has an open and close device in the cold air pipe driving by the fan, when opening the fan to defrost, it makes the high-heat air circulating only in the closed cold air pipe, so the heat from the defrost heater can be totally transported to the evaporator surface, by which can decrease the defrosting time and electric consumption.

Description

technical field [0001] The invention relates to a defrosting device for a refrigerator evaporator, in particular to a defrosting device capable of effectively removing frost on the surface of the evaporator. Background technique [0002] Generally speaking, the refrigerator maintains the low temperature inside the refrigerator through the repeated cycles of the compression of the refrigerant—condensation—expansion—evaporation. As a device for refrigerating and freezing food, refrigerators are indispensable in daily life. [0003] The refrigerating cycle system of the above-mentioned refrigerator includes: a compressor that changes the low-temperature / low-pressure refrigerant into a high-temperature / high-pressure refrigerant to increase the temperature / pressure of the refrigerant; a condenser that condenses the refrigerant supplied by the compressor by using external air; The refrigerant is decompressed to deal with the expansion valve whose diameter is smaller than that of ...

AI Technical Summary

Problems solved by technology

At this time, the temperature may rise above the required temperature due to the long power supply time.

Such high temperatures are unsafe

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