Air Conditioner

Abstract

A centrifugal blower is arranged in the casing so as to extend its axis of rotation along the depth direction of an air conditioner. A pair of heat exchangers are arranged on the right and left sides of the centrifugal fan so as to superimpose on the centrifugal fan when viewed from the direction perpendicularly intersecting the axis of rotation of the centrifugal fan. In other words, each heat exchanger is arranged symmetrically with respect to a vertical plane including the axis of rotation of the centrifugal fan. Accordingly, the centrifugal fan and the heat exchanger do not overlap in the depth direction of the air conditioner in the casing. Thus, the air conditioner can be made compact in the depth direction.

1 . An air conditioner comprising:
 a centrifugal blower arranged in a casing including an intake port and a discharge port for air so that a rotation axis of the centrifugal blower extends in a depthwise direction of the casing; and   a heat exchanger arranged to at least partially overlap the centrifugal blower when viewed from a direction perpendicular to the rotation axis of the centrifugal blower.   
   
   
       2 . The air conditioner according to  claim 1 , wherein a plurality of heat exchangers are arranged in the casing, the heat exchangers being arranged at an angular interval of 180 degrees or 90 degrees about the rotation axis of the centrifugal blower. 
   
   
       3 . The air conditioner according to  claim 2 , wherein the heat exchangers are arranged at an angular interval of 180 degrees about the rotation axis of the centrifugal blower so as to be in planar symmetry with respect to a vertical plane or a horizontal plane including the rotation axis of the centrifugal blower. 
   
   
       4 . The air conditioner according to  claim 2 , wherein fins of at least one of the heat exchangers are stacked in a direction diagonal to the rotation axis of the centrifugal blower. 
   
   
       5 . The air conditioner according to any one of  claims 1  to  4 , comprising:
 an air discharge passage in communication with the discharge port and arranged in the casing at a rear side of the heat exchanger when viewed from the centrifugal blower; and   a guide surface arranged on an inner surface of the air discharge passage facing towards the rear surface of the heat exchanger to smoothly guide air flow from the rear surface of the heat exchanger towards the discharge port.   
   
   
       6 . The air conditioner according to  claim 1 , wherein the centrifugal blower is arranged facing towards the intake port in the front surface of the casing, and an air guide of which diameter is reduced towards the inner side of the casing is arranged between the intake port and the centrifugal blower. 
   
   
       7 . The air conditioner according to  claim 1 , wherein the intake port is arranged in the front surface of the casing, and the discharge port is arranged in the front surface of the casing. 
   
   
       8 . The air conditioner according to  claim 1 , wherein the casing is arranged with a rear surface of the casing facing towards a wall surface of the room, and the intake port and the discharge port are each arranged in a front surface of the casing. 
   
   
       9 . The air conditioner according to  claim 8 , wherein the intake port and the discharge port are arranged in the front surface of the casing so that a discharge port is arranged at each of left and right sides of the intake port. 
   
   
       10 . The air conditioner according to  claim 9 , wherein a plurality of intake ports are arranged in the front surface of the casing, a plurality of centrifugal blowers facing the intake ports are arranged in the casing, the heat exchanger is arranged in the casing on left and right sides of the centrifugal blower, and an air discharge passage for guiding air flow from the rear surface of each heat exchanger towards each discharge port is arranged between the rear surface of each heat exchanger and each discharge port.