Heat-dissipating device with high heat-dissipating efficiency

Abstract

A heat-dissipating device includes a planar plate, a cap-like cover, a finned structure, and a discharge pipe. The cap-like cover includes a base wall, and a surrounding wall that interconnects the planar plate and the base wall, that cooperates with the planar plate and the base wall to define an inner space thereamong, and that defines an inlet. The finned structure includes a plurality of partitioning plates that form a continuous meandering fluid path, and a plurality of heat-dissipating fins that are disposed in the meandering fluid path. The discharge pipe is connected to the surrounding wall of the cap-like cover, is in fluid communication with the second compartment, and has an open end disposed adjacent to the base wall of the cap-like cover.

1 . A heat-dissipating device, comprising:
 a planar plate;   a cap-like cover including
 a base wall spaced apart from said planar plate, and 
 a surrounding wall that interconnects said planar plate and said base wall, that cooperates with said planar plate and said base wall to define an inner space thereamong, and that defines an inlet, said inner space being divided into first and second compartments; 
   a finned structure including
 a plurality of partitioning plates disposed in said first compartment so as to divide said first compartment into a plurality of partitioned sections that are connected to form a continuous meandering fluid path for permitting fluid communication between said first and second compartments, said meandering fluid path having first and second ends that are respectively connected to said inlet and said second compartment, and 
 a plurality of heat-dissipating fins disposed in each of said partitioned sections; and 
   a discharge pipe connected to said surrounding wall of said cap-like cover, in fluid communication with said second compartment, and having an open end disposed adjacent to said base wall of said cap-like cover.   
   
   
       2 . The heat-dissipating device as claimed in  claim 1 , wherein said base wall of said cap-like cover has a wall portion that is convex and that defines a recess, and the remainder of said base wall is flat, said discharge pipe being disposed at least partially adjacent to said recess. 
   
   
       3 . The heat-dissipating device as claimed in  claim 1 , further comprising a partitioning member disposed in said inner space so as to cooperate with a portion of said finned structure to divide said inner space into said first and second compartments. 
   
   
       4 . The heat-dissipating device as claimed in  claim 3 , wherein said partitioning member extends parallel to said planar plate, is disposed between and spaced apart from said planar plate and said base wall of said cap-like cover, is connected to said surrounding wall of said cap-like cover, and has an end that is spaced apart from said surrounding wall of said cap-like cover,
 said partitioning plates of said finned structure being formed on said bottom surface of said planar plate and abutting against said partitioning member.   
   
   
       5 . The heat-dissipating device as claimed in  claim 1 , wherein said discharge pipe is disposed externally of said inner space, said open end of said discharge pipe being connected to an exterior of said surrounding wall of said cap-like cover. 
   
   
       6 . The heat-dissipating device as claimed in  claim 1 , wherein said discharge pipe extends through said surrounding wall of said cap-like cover and into said second compartment. 
   
   
       7 . The heat-dissipating device as claimed in  claim 6 , wherein said discharge pipe is generally L-shaped, and has a first leg that extends through said surrounding wall of said cap-like cover and into said second compartment, and a second leg that is disposed in said second compartment and that has said open end. 
   
   
       8 . The heat-dissipating device as claimed in  claim 6 , wherein said discharge pipe extends along a straight line, through said surrounding wall of said cap-like cover, and into said second compartment. 
   
   
       9 . The heat-dissipating device as claimed in  claim 1 , wherein said partitioning plates of said finned structure are formed on said bottom surface of said planar plate and abut against said base wall of said cap-like cover. 
   
   
       10 . The heat-dissipating device as claimed in  claim 3 , wherein said partitioning member extends parallel to said planar plate, is disposed between and spaced apart from said planar plate and said base wall of said cap-like cover, is connected to said surrounding wall of said cap-like cover, and defines a hole therethrough,
 said partitioning plates of said finned structure being formed on said bottom surface of said planar plate and abutting against said partitioning member,   said second end of said meandering fluid path being connected to and in fluid communication with said second compartment through said hole in said partitioning member.