Indoor unit of air-conditioning apparatus

Abstract

A cross-flow fan, a heat exchanger provided so as to surround an upper side and a front side of the cross-flow fan, and a nozzle which is located at a lower side of the front heat exchanger located at the front side of the cross-flow fan and is provided to face the cross-flow fan, are included. The nozzle includes a drain pan which receives dew condensation water generated at the heat exchanger and a drain groove into which the dew condensation water flows.

1 . An indoor unit of an air-conditioning apparatus comprising:
 a fan;   a heat exchanger provided so as to surround an upper side and a front side of the fan; and   a nozzle located below the heat exchanger located at the front side of the fan, the nozzle being provided to face the fan, wherein   the nozzle includes
 a drain pan configured to receive dew condensation water generated at the heat exchanger; and 
 a drain groove into which the dew condensation water flows. 
   
     
     
         2 . The indoor unit of an air-conditioning apparatus of  claim 1 , wherein
 the drain pan and the drain groove are continuously formed by an upper surface of the nozzle, and   the drain pan is located at the fan side with respect to the drain groove.   
     
     
         3 . The indoor unit of an air-conditioning apparatus of  claim 1 , wherein the drain pan is inclined downward toward the drain groove. 
     
     
         4 . The indoor unit of an air-conditioning apparatus of  claim 3 , wherein the drain pan has an inclination angle equal to or greater than 2 degrees. 
     
     
         5 . The indoor unit of an air-conditioning apparatus of  claim 1 , wherein the drain groove has a depth equal to or larger than 2% of a horizontal width dimension of the indoor unit. 
     
     
         6 . The indoor unit of an air-conditioning apparatus of  claim 1 , wherein a boundary between the drain groove and the drain pan has a shape curved so as to be convex toward the heat exchanger. 
     
     
         7 . The indoor unit of an air-conditioning apparatus of  claim 1 , wherein the boundary between the drain groove and the drain pan is located at a side opposite to the fan with respect to a position directly below the heat exchanger. 
     
     
         8 . The indoor unit of an air-conditioning apparatus of  claim 1 , wherein a heat transfer tube of the heat exchanger is formed of aluminum. 
     
     
         9 . The indoor unit of an air-conditioning apparatus of  claim 2 , wherein the drain pan is inclined downward toward the drain groove 
     
     
         10 . The indoor unit of an air-conditioning apparatus of  claim 9 , wherein the drain pan has an inclination angle equal to or greater than 2 degrees.