November 24, 2021
The utility model relates to an auxiliary defrosting system for an air-conditioning heat pump unit under extremely cold working conditions, which comprises a water receiving plate and a heating element, wherein the water receiving plate receives defrosting water when the air-conditioning heat pump unit is in defrosting mode, and the heating element is used for providing heat for the water receiving plate. The system can discharge the defrosting water in time and completely by arranging the heating elements at the receiving plate. The invention also discloses an air-conditioning heat pump unit having the defrosting auxiliary system and a defrosting method using the defrosting auxiliary system.