Cooling Module

Abstract

A cooling module is presented, which includes a heat sink and a fan unit. The heat sink provides a base plate and a plurality of fins, with an outlet extending through the base plate and the fins formed on a first surface of the base plate, and with a second surface of the base plate attached to a heat generating unit. The fan unit is rotatably mounted on the heat sink and aligned with the outlet. With the above-mentioned structure, an air-guiding channel is formed between any adjacent two of the fins and communicates with the outlet for a part of air outputted by the fan unit to be guided through the air guiding channels and exhausted by the outlet. Consequently, disturbed flows and wind noise are decreased while cooling efficiency is improved.

1 . A cooling module, comprising:
 a heat sink having a base plate and a plurality of fins, wherein the base plate has a first surface, a second surface and an outlet extending from the first surface to the second surface, and the fins are arranged on the first surface of the base plate; and   a fan unit mounted on the fins, aligned with the outlet, and having a fan wheel with a hub and a plurality of blades,   wherein a bottom edge of each of the fins connecting with the first surface extends along the first surface with a curve-pattern while an air-guiding channel is formed between any adjacent two of the fins, extends in a curved manner, and communicates with the outlet of the base plate.   
     
     
         2 . The cooling module as defined in  claim 1 , wherein the outlet is formed on a center of the base plate and the fins are arranged on the first surface and radially extend relative to the outlet. 
     
     
         3 . The cooling module as defined in  claim 1 , wherein the fan unit is mounted on top edges of the fins, with the top edges being opposite to the bottom edges of the fins, and a round projection range defined by projecting the hub onto a plane whereon the base plate is disposed is located within a range of the outlet. 
     
     
         4 . The cooling module as defined in  claim 1 , wherein an auxiliary outlet section is formed on an outer periphery of the base plate, while the base plate is sandwiched between the outlet and the auxiliary outlet section. 
     
     
         5 . The cooling module as defined in  claim 4 , wherein a radial width of the base plate between the outlet and the auxiliary outlet section is smaller than a radial length of each blade, and the base plate is located within a ring projection range defined by projecting a rotation range of the blades onto a plane whereon the base plate is disposed. 
     
     
         6 . The cooling module as defined in  claim 1 , wherein extending directions of the curve-patterns of the bottom edges are arranged corresponding to a rotational direction of the fan wheel, while the curve-patterns are identical. 
     
     
         7 . The cooling module as defined in  claim 6 , wherein each of the fins has a convex surface faces in a direction identical to the rotational direction of the fan wheel at said convex surface. 
     
     
         8 . The cooling module as defined in  claim 6 , wherein each of the fins has a convex surface faces in a direction opposite to the rotational direction of the fan wheel at said convex surface. 
     
     
         9 . The cooling module as defined in  claim 1 , wherein each of the fins has a narrow section and a wide section connecting with each other, and a height between a top edge of the narrow section and the first surface is smaller than another height between a top edge of the wide section and the first surface. 
     
     
         10 . A cooling module, comprising:
 a heat sink having a base plate and a plurality of fins, wherein an outlet and an auxiliary outlet section extend through the base plate, the outlet separates the base plate into a core portion on a center of the base plate and an outer portion and is sandwiched between the core and outer portions, the auxiliary outlet section is formed on an outer periphery of the outer portion, and the fins are arranged on a surface of the base plate and connect with the core and outer portions; and   a fan unit mounted on the fins, aligned with the core portion of the base plate, and having a fan wheel with a hub and a plurality of blades,   wherein an air-guiding channel is formed between any adjacent two of the fins and communicates with the outlet and the auxiliary outlet section by two ends thereof.   
     
     
         11 . The cooling module as defined in  claim 10 , wherein both of the outlet and auxiliary outlet section are in ring shapes, with the outlet annularly formed along an outer periphery of the core portion and the auxiliary outlet section annularly formed along the outer periphery of the outer portion. 
     
     
         12 . The cooling module as defined in  claim 10 , wherein the fins radially extend relative to the core portion. 
     
     
         13 . The cooling module as defined in  claim 10 , wherein a radial width of the outer portion between the outlet and the auxiliary outlet section is smaller than a radial length of each blade, and the outer portion is located within a ring projection range defined by projecting a rotation range of the blades onto a plane whereon the base plate is disposed. 
     
     
         14 . The cooling module as defined in  claim 10 , wherein a bottom edge of each of the fins connecting with the base plate extends along the base plate with a curve-pattern while the air-guiding channel formed between any adjacent two of the fins extends in a curved manner. 
     
     
         15 . The cooling module as defined in  claim 14 , wherein extending directions of the curve-patterns of the bottom edges are arranged corresponding to a rotational direction of the fan wheel, while the curve-patterns are identical. 
     
     
         16 . The cooling module as defined in  claim 15 , wherein each of the fins has a convex surface faces in a direction identical to the rotational direction of the fan wheel at said convex surface. 
     
     
         17 . The cooling module as defined in  claim 15 , wherein each of the fins has a convex surface faces in a direction opposite to the rotational direction of the fan wheel at said convex surface. 
     
     
         18 . The cooling module as defined in  claim 10 , wherein each of the fins has a narrow section and a wide section connecting with each other, and a height between a top edge of the narrow section and the base plate is smaller than another height between a top edge of the wide section and the base plate.