Defrosting heater, evaporator assembly of refrigerating equipment and refrigerator with same

Abstract

The invention discloses a defrosting heater. The defrosting heater is suitable for being arranged at an evaporator of refrigerating equipment and between water collecting disks under the evaporator. The defrosting heater comprises a first heating pipe, a second heating pipe and a connecting pipe, wherein the first heating pipe is suitable for being close to the bottom surface of the evaporator and parallel to the bottom of the evaporator; both ends of the second heating pipe are respectively inclined to the middle along the direction from the bottom surface of the evaporator to drainage openings of the water collecting disks; and the connecting pipe is in a U shape and is used for connecting the first ends of the first heating pipe and the second heating pipe. The defrosting heater of the embodiment of the invention prevents the secondary freezing of defrosted residual ice at the water collecting disks and the drainage openings so as to solve the problem of drainage opening blockage or defrosting water overflow. The invention also discloses an evaporator assembly of refrigerating equipment with the defrosting heater and a refrigerator with same.

Description

technical field [0001] The invention relates to the field of refrigeration equipment, in particular to a defrosting heater, an evaporator assembly of the refrigeration equipment having the defrosting heater and a refrigerator having the same. Background technique [0002] When the air-cooled refrigerator is cooling, the fan is used to make the cold air forced convection cycle to indirectly refrigerate and freeze the food. The water evaporated from the food in the refrigerator is taken away by the cold air and freezes on the fins and pipe surface of the evaporator when it passes through the evaporator. Form a layer of frost. The existence of the frost layer will affect the heat exchange of the evaporator, make the refrigeration performance of the air-cooled refrigerator worse, and even block the circulation of the air, resulting in failure. In order to ensure the normal operation of the air-cooled refrigerator, the surface of the finned evaporator needs to be defrosted regul...

AI Technical Summary

Problems solved by technology

In the existing L-shaped double-pipe structure defrosting heater, its pipeline is parallel to the bottom surface of the evaporator. Since the drain of the water receiving pan is far away from the heater, the heat received during defrosting is less, which may easily cause the residual ice in the defrosting period. Secondary freezing of the water receiving tray and the drain outlet will block the drain outlet or cause defrosting water to overflow

[0004] In addition, in order to facilitate the bending and fixing of the heating tube, the right-angled bending part of the above-mentioned L-shaped double-tube heater usually protrudes upwards for a section. Since the heating wire is arranged in the heating tube, the temperature rise on the side of the evaporator is likely to be too fast and too high during defrosting. High, causing adverse effects on wiring harnesses and tanks, etc.

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