Air conditioner fan

Abstract

A fan of an air conditioner is provided. A discharge portion of a hub of the fan increases in outer diameter toward a discharge end of the hub such that air can diverge from the hub. The hub accommodates a portion of a motor such that the fan can vibrate less when the motor operates.

1 . A fan of an air conditioner, comprising:
 a hub divided into an intake portion and a discharge portion, the discharge portion gradually increasing in outer diameter; and   a plurality of blades provided on an outer circumferential surface of the hub.   
     
     
         2 . The fan according to  claim 1 , wherein the intake portion has a constant outer diameter. 
     
     
         3 . The fan according to  claim 1 , wherein the discharge portion has a conical shape. 
     
     
         4 . The fan according to  claim 1 , wherein the discharge portion is rounded along a centerline of the hub. 
     
     
         5 . The fan according to  claim 1 , wherein the hub has an intake end into which a motor is partially inserted. 
     
     
         6 . A fan of an air conditioner, comprising:
 a hub divided into an intake portion and a discharge portion, the discharge portion being tapered from a discharge end of the hub to the intake portion; and   a plurality of blades provided on an outer circumferential surface of the hub.   
     
     
         7 . The fan according to  claim 6 , wherein the intake portion is tapered from the discharge portion to an intake end of the hub. 
     
     
         8 . The fan according to  claim 6 , wherein the hub accommodates a portion of a motor. 
     
     
         9 . The fan according to  claim 6 , wherein the intake portion and the discharge portion have different tapered angles. 
     
     
         10 . The fan according to  claim 9 , wherein the tapered angle of the discharge portion is larger than the tapered angle of the intake portion. 
     
     
         11 . The fan according to  claim 9 , wherein the hub accommodates a portion of a motor. 
     
     
         12 . A fan of an air conditioner, comprising:
 a hub divided into an intake portion and a discharge portion, the discharge portion gradually increasing in outer diameter;   a plurality of blades provided on an outer circumferential surface of the hub; and   a motor partially inserted into the hub.   
     
     
         13 . The fan according to  claim 12 , wherein the intake portion has a constant outer diameter. 
     
     
         14 . The fan according to  claim 12 , wherein the discharge portion has a conical shape. 
     
     
         15 . The fan according to  claim 12 , wherein the discharge portion is tapered. 
     
     
         16 . The fan according to  claim 12 , wherein the discharge portion is rounded along a centerline of the hub. 
     
     
         17 . The fan according to  claim 12 , wherein the intake portion has an inclined outer surface. 
     
     
         18 . The fan according to  claim 12 , wherein the discharge portion of the hub is streamlined along a centerline of the hub. 
     
     
         19 . The fan according to  claim 1 , wherein an outer surface of the discharge portion forms an inclination angle with the centerline of the hub, the inclination angle having a value in the range of 10 to 80 degrees. 
     
     
         20 . The fan according to  claim 6 , wherein an outer surface of the discharge portion forms an inclination angle with the centerline of the hub, the inclination angle having a value in the range of 20 to 80 degrees.