Plate-type heat pipe

Abstract

A plate-type heat pipe includes a condensing plate, an evaporating plate and a first wick member. The evaporating plate cooperates with the condensing plate to define a hermetic container. Working fluid is contained in the container. The first wick member is formed on an inner surface of the condensing plate. The first wick member defines a plurality of through holes therein.

1 . A plate-type heat pipe comprising:
 a condensing plate;   an evaporating plate cooperating with the condensing plate to define a hermetic container, working fluid contained in the container; and   a first wick member formed on an inner surface of the condensing plate, the first wick member defining a plurality of through holes therein.   
     
     
         2 . The plate-type heat pipe of  claim 1 , wherein the first wick member is made of sintered metallic powder. 
     
     
         3 . The plate-type heat pipe of  claim 1 , wherein a plurality of second wick members fill top ends of the through holes, respectively, and contact the inner surface of the condensing plate. 
     
     
         4 . The plate-type heat pipe of  claim 3 , wherein each of the second wick members is thinner than the first wick member. 
     
     
         5 . The plate-type heat pipe of  claim 4 , wherein a cross-section of each of the second wick members is a rectangle. 
     
     
         6 . The plate-type heat pipe of  claim 4 , wherein a cross-section of each of the second wick members is a trapezoid. 
     
     
         7 . The plate-type heat pipe of  claim 6 , wherein each of the second wick members has a smaller end, and the smaller ends of the second wick members are all oriented toward the same direction. 
     
     
         8 . The plate-type heat pipe of  claim 4 , wherein a cross-section of each of the second wick members is concave. 
     
     
         9 . The plate-type heat pipe of  claim 8 , wherein a thickness of each of the second wick members gradually increases from a central portion thereof to each of opposite ends thereof. 
     
     
         10 . The plate-type heat pipe of  claim 1 , wherein the evaporating plate comprises a central heat absorbing portion and two sidewalls extending upwardly at opposite sides of the heat absorbing portion and abutting against the condensing plate, a second wick member comprises a first wick portion adhered on an inner surface of the heat absorbing portion and two second wick portions adhered on inner surfaces of the sidewalls. 
     
     
         11 . The plate-type heat pipe of  claim 10 , wherein the evaporating plate further comprises two transition portions extend outwardly and upwardly from opposite ends of the heat absorbing portion, and the second wick member further comprises two third wick portions adhered on inner surfaces of the transition portions. 
     
     
         12 . The plate-type heat pipe of  claim 11 , wherein the evaporating plate further comprises two extending portions extending outwardly from opposite ends of the transition portions, respectively, and connecting with the two sidewalls, respectively, and the second wick member further comprises two fourth wick portions adhered on inner surfaces of the extending portions. 
     
     
         13 . The plate-type heat pipe of  claim 12 , wherein each of the fourth wick portions fills a corner formed by the corresponding sidewall and the corresponding extending portion. 
     
     
         14 . The plate-type heat pipe of  claim 10 , wherein a cross-section of each of the second wick portions is generally triangular. 
     
     
         15 . The plate-type heat pipe of  claim 10 , wherein the evaporating plate and the condensing plate are a single body of the same material without any seams. 
     
     
         16 . The plate-type heat pipe of  claim 13 , wherein a plurality of third wick members fill top ends of the through holes, respectively, and contact the inner surface of the condensing plate. 
     
     
         17 . The plate-type heat pipe of  claim 16 , wherein each of the third wick members is thinner than the first wick member. 
     
     
         18 . The plate-type heat pipe of  claim 17 , wherein a cross-section of each of the third wick members is a rectangle. 
     
     
         19 . The plate-type heat pipe of  claim 17 , wherein a cross-section of each of the third wick members is a trapezoid. 
     
     
         20 . The plate-type heat pipe of  claim 19 , wherein each of the third wick members has a smaller end, and the smaller ends of the second wick members are all oriented toward the same direction.