Freezer Defrost Door Frame Heater Cable

The freezer door frame heater is a specially designed heating element, widely used in refrigerators, freezers and other refrigeration equipment. The defrost door frame heater wire main function is to melt the frost layer formed on the surface of the evaporator through heating, thus ensuring the continuous and efficient operation of the refrigeration equipment. This braided door heating wire is usually made of nickel-chromium alloy, a material widely adopted due to its excellent corrosion resistance and electrical conductivity.

During the actual operation of a refrigerator, the evaporator, due to its extremely low temperature, causes water vapor in the air to condense on its surface and gradually form a frost layer. As time goes by, the thickness of the frost layer will continuously increase, which not only affects the heat exchange efficiency of the evaporator but may also lead to a decline in the cooling effect or even equipment failure. To address this issue, modern refrigerators are generally equipped with an automatic defrosting system. When the built-in sensor detects that the thickness of the frost layer exceeds the set threshold, the system will activate the aluminum braided defrost heating wire to perform a heating operation. At this point, the defrost door frame heater wire will generate sufficient heat to melt the frost layer into water, which is then drained out of the device through the drainage system. Once the frost layer is completely melted, the door frame heating wire will stop working, and the refrigerator will immediately return to its normal cooling state, continuing to provide users with a stable refrigeration or freezing environment.