Air conditioner with drain passage

Abstract

A drain mechanism has a drain connector. The drain connector has a connection pipe and a protector. The connecting pipe provides a partial passage. The partial passage provides a passage cross section perpendicular to a central axis of the partial passage. The connecting pipe has a barrier plate projecting into the partial passage. The barrier plate projects from an upper portion of the partial passage. The barrier plate provides a first opening and a second opening in a passage cross section. The barrier plate functions as a barrier plate against condensed water. The barrier plate regulates a flow of condensed water in the partial passage.

What is claimed is: 
     
         1 . An air conditioner comprising:
 a cooling heat exchanger for cooling air; and   an air conditioning unit, wherein   the air conditioning unit includes:   a drain pan disposed under the cooling heat exchanger for receiving condensed water from the cooling heat exchanger;   a drain collector provided on a part of the drain pan for collecting the condensed water; and   a connecting pipe which communicates with the drain collector and provides a partial passage extending from the drain collector, wherein   the connecting pipe has a barrier plate protruding toward an inside of the partial passage and serving as a barrier to the condensed water, and wherein   in the passage cross section of the partial passage, the barrier plate defines a first opening positioned at a lower portion and a second opening positioned above the first opening, and wherein   a passage area provided by the second opening is smaller than a passage area provided by the first opening (A 2 <A 1 ).   
     
     
         2 . The air conditioner claimed in  claim 1 , wherein
 the first opening and the second opening are continuous as a series of openings.   
     
     
         3 . The air conditioner claimed in  claim 1 , wherein
 the drain collector has a first inner surface as a bottom surface and a second inner surface, which is inclined with respect to a horizontal plane , positioned above the bottom surface, and wherein   the partial passage is an inclined passage inclined with respect to a horizontal plane, and is open over both the first inner surface and the second inner surface, and wherein   the barrier plate extends from the second inner surface.   
     
     
         4 . The air conditioner claimed in  claim 1 , wherein the barrier plate extends in a partial arc shape along the inner surface of the partial passage. 
     
     
         5 . The air conditioner claimed in  claim 1 , wherein
 the barrier plate is arranged at an inlet of the partial passage.   
     
     
         6 . The air conditioner claimed in  claim 1 , wherein
 the barrier plate is arranged only above the partial passage.   
     
     
         7 . The air conditioner claimed in  claim 1 , wherein
 the barrier plate is inclined with respect to a horizontal plane.   
     
     
         8 . The air conditioner claimed in  claim 1 , wherein
 the barrier plate is arranged in a passage cross section intersecting a central axis of the partial passage.   
     
     
         9 . The air conditioner claimed in  claim 1 , wherein
 the barrier plate is integrally molded with a resin member that provides the connection pipe.   
     
     
         10 . An air conditioner comprising:
 a cooling heat exchanger for cooling air; and   an air conditioning unit, wherein   the air conditioning unit includes:   a drain pan disposed under the cooling heat exchanger for receiving condensed water from the cooling heat exchanger;   a drain collector provided on a part of the drain pan for collecting the condensed water; and   a connecting pipe which communicates with the drain collector and provides a partial passage extending from the drain collector, wherein   the connecting pipe has a barrier plate protruding toward an inside of the partial passage and serving as a barrier to the condensed water, and wherein   the drain collector has a first inner surface as a bottom surface and a second inner surface, which is inclined with respect to a horizontal plane , positioned above the bottom surface, and wherein   the partial passage is an inclined passage inclined with respect to a horizontal plane, and is open over both the first inner surface and the second inner surface, and wherein   the barrier plate extends from the second inner surface.   
     
     
         11 . The air conditioner claimed in  claim 10 , wherein
 the barrier plate extends in a partial arc shape along the inner surface of the partial passage.   
     
     
         12 . The air conditioner claimed in  claim 10 , wherein
 the barrier plate is arranged at an inlet of the partial passage.   
     
     
         13 . The air conditioner claimed in  claim 10 , wherein
 the barrier plate is arranged only above the partial passage.   
     
     
         14 . The air conditioner claimed in  claim 10 , wherein
 the barrier plate is inclined with respect to a horizontal plane.   
     
     
         15 . The air conditioner claimed in  claim 10 , wherein
 the barrier plate is arranged in a passage cross section intersecting a central axis of the partial passage.   
     
     
         16 . The air conditioner claimed in  claim 10 , wherein
 the barrier plate is integrally molded with a resin member that provides the connection pipe.