Air conditioning device

Abstract

An air conditioning device capable of preventing drainage water dropped down from a heat exchange portion on the upper side for which a defrosting operation is performed from being frozen again in a heat exchange portion used for a heating operation, so that a decrease in a heating ability can be suppressed is provided. In an air conditioning device including a heat source side heat exchanger formed by providing a plurality of heat exchange portions, to which a refrigerant is supplied through different paths from each other, side by side in the up and down direction, and partial defrosting means for, while the heating operation is performed by using a part of the heat exchange portions, performing the defrosting operation for the other heat exchange portions, a drainage mechanism for draining drainage water generated in each of the heat exchange portions is provided for each of the heat exchange portions.

1 . An air conditioning device comprising:
 a heat source side heat exchanger formed by providing a plurality of heat exchange portions, to which a refrigerant is supplied through different paths from each other, side by side in the up and down direction; and   partial defrosting means for, while a heating operation is performed by using a part of the heat exchange portions, performing a defrosting operation for the other heat exchange portions, wherein   a drainage mechanism for draining drainage water generated in each of the heat exchange portions is provided for each of the heat exchange portions.   
     
     
         2 . The air conditioning device according to  claim 1 , wherein
 the drainage mechanism is provided between the heat exchange portions adjacent to each other in the up and down direction, and includes a drain pan for receiving the drainage water dropped down from the heat exchange portion on the upper side.   
     
     
         3 . The air conditioning device according to  claim 2 , wherein
 the drain pan includes discharge portions for discharging the received drainage water to an exterior.   
     
     
         4 . The air conditioning device according to  claim 3 , wherein
 the drain pan is divided into a plurality of water collection regions and includes the discharge portions respectively for the water collection regions.   
     
     
         5 . The air conditioning device according to  claim 3 , comprising:
 a water guiding structure in which the discharge portions in the plurality of drain pans are connected to each other and the drainage water discharged from the discharge portions are integrated and guided to the lower side.   
     
     
         6 . The air conditioning device according to claim  2 , wherein
 the drain pan forms a heat insulating layer between the upper and lower heat exchange portions.   
     
     
         7 . The air conditioning device according to  claim 1 , wherein
 the partial defrosting means has a defrosting circuit in which a part of the heat exchange portions used for the heating operation and the other heat exchange portions for which the defrosting operation is performed are connected in series, the refrigerant flows from the other heat exchange portions to the part of the heat exchange portions, and after the refrigerant is condensed and supercooled in the other heat exchange portions, the refrigerant is evaporated in the part of the heat exchange portions.