In-refrigerator blower and refrigerator including the same

Abstract

An in-refrigerator blower configured to drive cold air to refrigerator storage rooms with reduced vibration and reduced noise. The in-refrigerator blower includes a drive device, a drive device accommodation portion, and a support portion coupled to the drive device accommodation portion and configured to extend in a radial direction. A plurality of blades extend in a direction different from an extension direction of the support portion. Each of the blades has an entrance angle in the range of 39°-49°, an exit angle in the range of 29.5° to 34.5° in one example. The number of the blades is greater than seven and smaller than nine.

What is claimed is: 
     
         1 . An in-refrigerator blower comprising:
 a drive device configured to generate a rotational force;   a body comprising: a drive device accommodation portion configured to accommodate the drive device; and a support portion coupled to the drive device accommodation portion and configured to extend in a radial direction; and   blades coupled to the body and configured to extend in a direction different from an extension direction of the support portion,   wherein each of the blades has an entrance angle substantially within a range of 39°-49°.   
     
     
         2 . The in-refrigerator blower of  claim 1 , wherein each of the blades has an exit angle substantially within a range of 29.5° to 34.5°. 
     
     
         3 . The in-refrigerator blower of  claim 2 , wherein the body and the drive device accommodation portion are both circular, and a ratio of a diameter of the drive device accommodation portion to a diameter of the body is within a range of substantially 0.45 to 0.65. 
     
     
         4 . The in-refrigerator blower of  claim 3 , wherein a number of the blades is greater than seven and smaller than nine. 
     
     
         5 . The in-refrigerator blower of  claim 4  further comprising:
 an auxiliary member disposed at a radial outer side of the blades, 
 wherein the blades are coupled to the body at a first side thereof and coupled to the auxiliary member at the second side thereof. 
 
     
     
         6 . An in-refrigerator blower comprising:
 a drive device configured to generate a rotational force;   a body comprising a drive device accommodation portion configured to accommodate the drive device;   blades coupled to the body and extending in a direction differing from an extension direction of the body; and   a housing configured to accommodate the blades,   wherein the body and the drive device accommodation portion are formed in a circular shape, and wherein further a ratio of a diameter of the drive device accommodation portion to a diameter of the body is substantially within a range of 0.45 to 0.65.   
     
     
         7 . The in-refrigerator blower of  claim 6 , wherein each of the blades has an entrance angle in a range of 39° to 49° substantially. 
     
     
         8 . The in-refrigerator blower of  claim 6 , wherein each of the blades has an exit angle substantially within a range of 29.5° to 34.5°. 
     
     
         9 . The in-refrigerator blower of  claim 6 , wherein a number of the blades is greater than seven and smaller than nine. 
     
     
         10 . The in-refrigerator blower of  claim 6  further comprising:
 an auxiliary member disposed at a radial outer side of the blades, and 
 wherein the blades are coupled to the body at a first side thereof and coupled to the auxiliary member at the second side thereof. 
 
     
     
         11 . A refrigerator comprising:
 an evaporator configured to cool air by absorbing heat with a refrigerant;   a compressor configured to compress the refrigerant supplied from the evaporator;   a condenser configured to liquefying at least a part of a compressed refrigerant; and   an in-refrigerator blower configured to supply air cooled by the evaporator to a refrigerator room, wherein the in-refrigerator blower comprises:
 a drive device configured to generate a rotational force; 
 a body comprising: a drive device accommodation portion configured to accommodate the drive device; and a support portion coupled to the drive device accommodation portion and configured to extend in a radial direction; and 
 blades coupled to the body and configured to extend in a direction different from an extension direction of the support portion, 
 wherein each of the blades has an entrance angle substantially within a range of 39°-49°. 
   
     
     
         12 . The refrigerator  claim 11 , wherein each of the blades has an exit angle substantially within a range of 29.5° to 34.5°. 
     
     
         13 . The refrigerator of  claim 12 , wherein the body and the drive device accommodation portion are both circular, and wherein a ratio of a diameter of the drive device accommodation portion to a diameter of the body is substantially within a range of 0.45 to 0.65. 
     
     
         14 . The refrigerator of  claim 13 , wherein a number of the blades is greater than seven and smaller than nine. 
     
     
         15 . The refrigerator of  claim 14 , wherein the in-refrigerator blower further comprises:
 an auxiliary member disposed at a radial outer side of the blades,   wherein the blades are coupled to the body at a first side thereof and coupled to the auxiliary member at the second side thereof.