Cooling device for vehicle

Abstract

A cooling device for a vehicle may include a heat exchanger provided to cool an engine of the vehicle, a radiator provided near a side of and in parallel with the heat exchanger to cool an inside of the vehicle, and a cooling fan provided near a side of the radiator to coercively introduce external air into the heat exchanger and the radiator, wherein the cooling fan includes a hub connected to a driving shaft, and a plurality of blades radially arranged on an outer circumferential surface of the hub, wherein the plurality of blades are arranged so that a spaced area between two neighboring blades is different from a spaced area between other two neighboring blades, and wherein a sum of all vectors for the plurality of blades is not zero, the vector being reached from the center of the hub to a reference point of each blade.

1 . A cooling device for a vehicle, comprising:
 a heat exchanger provided to cool an engine of the vehicle;   a radiator provided near a side of and in parallel with the heat exchanger to cool an inside of the vehicle; and   a cooling fan provided near a side of the radiator to coercively introduce external air into the heat exchanger and the radiator,   wherein the cooling fan includes a hub connected to a driving shaft, and a plurality of blades radially arranged on an outer circumferential surface of the hub,   wherein the plurality of blades are arranged so that a spaced area between two neighboring blades is different from a spaced area between other two neighboring blades, and   wherein a sum of all vectors for the plurality of blades is not zero, the vector being reached from the center of the hub to a reference point of each blade.   
     
     
         2 . The cooling device for a vehicle of  claim 1 , wherein the cooling fan further includes a band that holds distal ends of the each blade to prevent the plurality of blades from vibrating upon rotation. 
     
     
         3 . The cooling device for a vehicle of  claim 1 , wherein the plurality of blades are arranged so that an air flow generated when the external air passes through the plurality of blades is distributed. 
     
     
         4 . The cooling device for a vehicle of  claim 1 , wherein a spaced area between two neighboring blades has a size to form the plurality of blades. 
     
     
         5 . The cooling device for a vehicle of  claim 1 , wherein the plurality of blades are arranged so that a spaced area between two neighboring blades increases or decreases two consecutive times or more. 
     
     
         6 . The cooling device for a vehicle of  claim 1 , wherein an angle between vectors of two neighboring blades is different from an angle between vectors of other two neighboring blades. 
     
     
         7 . The cooling device for a vehicle of  claim 1 , wherein an angle between two neighboring vectors for the plurality of blades is adapted to allow for forming the cooling fan. 
     
     
         8 . The cooling device for a vehicle of  claim 1 , wherein the plurality of blades are odd-numbered. 
     
     
         9 . The cooling device for a vehicle of  claim 8 , wherein the number of the plurality of blades is 7. 
     
     
         10 . The cooling device for a vehicle of  claim 9 , wherein vectors of any two neighboring blades is not less than approximately 37°. 
     
     
         11 . The cooling device for a vehicle of  claim 10 , wherein one of the seven blades is selected as a first blade which is a reference blade, and wherein in terms of the vectors for the plurality of blades, an angle between the first blade and a second blade is approximately 43.4°, an angle between the second blade and a third blade is approximately 69.5°, an angle between the third blade and a fourth blade is approximately 48.4°, an angle between the fourth blade and a fifth blade is approximately 37.4°, an angle between the fifth blade and a sixth blade is approximately 58.7°, an angle between the sixth blade and a seventh blade is approximately 63.3°, and an angle between the seventh blade and the first blade is approximately 39.3°. 
     
     
         12 . The cooling device for a vehicle of  claim 1 , wherein the reference point is positioned at the center of gravity of the each blade.