Liquid-cooling device

Abstract

A liquid-cooling device for an electronic component includes a heat exchanger, a fin set, a plurality of heat pipes and a fan fastened to a front side of the fin set. The heat exchanger defines a sealed chamber and has two inclined faces facing opposite to each other on a top thereof, and has heat exchanging members in the sealed chamber. An outlet and an inlet are respectively formed on the two inclined faces and in fluidic communication with the sealed chamber. The fin set includes spaced fins laminated together. Each heat pipe includes a semicircular evaporating portion embedded in a bottom surface of the heat exchanger and a round condensing portion extending upwardly and received in the fin set. The fan is located above the heat exchanger and behind the inlet and outlet of the heat exchanger.

1 . A liquid-cooling device:
 a heat exchanger defining a sealed chamber and comprising a bottom face adapted for contacting with an electronic device, and two inclined faces facing opposite to each other on a top thereof, the heat exchanger having a plurality of heat exchanging members in the sealed chamber, an outlet and an inlet respectively formed on the two inclined faces and in fluid communication with the sealed chamber, whereby cooling liquid can enter the sealed chamber via the inlet to flow through the heat exchanging members and leave the sealed chamber via the outlet; and   an aerial cooling device thermally connecting with the heat exchanger.   
   
   
       2 . The liquid-cooling device as claimed in  claim 1 , wherein the two inclined faces are tilted downwardly in respect to a middle of the top of the heat exchanger and respectively perpendicular to the inlet and outlet. 
   
   
       3 . The liquid-cooling device as claimed in  claim 1 , wherein the heat exchanger comprises a base, a housing fixed on the base and a cover fastened to a top end of the housing and wherein the two inclined faces are formed on a top of the cover. 
   
   
       4 . The liquid-cooling device as claimed in  claim 3 , wherein each of the heat exchanging members has a configuration of a pin and extends upwardly and perpendicularly from a top surface of the base. 
   
   
       5 . The liquid-cooling device as claimed in  claim 3 , wherein the housing is integrally formed by aluminum extrusion, comprises four periphery sidewalls interconnecting each other and defines four opened receiving channels respectively in four corners thereof. 
   
   
       6 . The liquid-cooling device as claimed in  claim 5 , wherein the cover has two fixing flanges respectively extending outwardly from two lower ends of the inclined faces, and wherein four fixtures are extended downwardly through corresponding fixing flanges and corresponding receiving channels of the housing in sequence to screw into the base to assemble the cover, the housing and the base of the heat exchanger together. 
   
   
       7 . The liquid-cooling device as claimed in  claim 3 , wherein the aerial cooling device comprises a fin set and a fan for generating an airflow through the fin set, the fin set being thermally connected to the base of the heat exchanger via a plurality of heat pipes, and wherein each of the heat pipes comprises an evaporating portion embedded in a bottom surface of the base and a condensing portion extending upwardly from an end of the evaporating portion and received in the fin set, the bottom surface of the base and a bottom surface of the evaporating portion cooperatively forming the bottom face of the heat exchanger adapted for contacting with the electronic device. 
   
   
       8 . The liquid-cooling device as claimed in  claim 7 , wherein the fin set comprises a plurality of spaced fins which are laminated together and parallel to the bottom surface of the base, and the condensing portions of the heat pipes spaced from each other are perpendicular to the fins and wholly received in the fin set. 
   
   
       9 . The liquid-cooling device as claimed in  claim 7 , wherein the evaporating portions of the heat pipes are received in a plurality of receiving grooves defined in the bottom surface of the base and arranged close to each other, each evaporating portion having a semicircular cross section. 
   
   
       10 . The liquid-cooling device as claimed in  claim 8 , wherein the fan is fastened to a side of the fin set by two fan holders and located above the heat exchanger and adjacent the inlet and outlet of the exchanger. 
   
   
       11 . A liquid-cooling device:
 a heat exchanger defining a sealed chamber and comprising a bottom face adapted for contacting with an electronic device and two inclined faces facing opposite to each other on a top thereof, an outlet and an inlet respectively formed on the two inclined faces and in fluid communication with the sealed chamber, whereby cooling liquid can enter the sealed chamber via the inlet and leave the sealed chamber via the outlet;   a fin set comprising a plurality of spaced fins which are laminated together;   a plurality of heat pipes thermally connecting the heat exchanger and the fin set, each heat pipe comprising an evaporating portion embedded in a bottom surface of the heat exchanger and a condensing portion extending upwardly from an end of the evaporating portion and received in the fin set; and   a fan fastened to a side of the fin set by a fan holder, the fan being located above the heat exchanger and adjacent to the inlet and outlet of the heat exchanger.   
   
   
       12 . The liquid-cooling device as claimed in  claim 11 , wherein the two inclined faces are tilted downwardly in respect to a middle of the top of the heat exchanger and respectively perpendicular to the inlet and outlet. 
   
   
       13 . The liquid-cooling device as claimed in  claim 11 , wherein the heat exchanger comprises a base, a housing fixed on the base and a cover fastened to a top end of the housing, and wherein the two inclined faces are formed on a top of the cover. 
   
   
       14 . The liquid-cooling device as claimed in  claim 13 , wherein the base of the heat exchanger comprises a base plate and a plurality of heat exchanging members extending from the base plate in the sealed chamber, and each of the heat exchanging members has a configuration of a pin. 
   
   
       15 . The liquid-cooling device as claimed in  claim 13 , wherein the housing is integrally formed by aluminum extrusion, and comprises four periphery sidewalls interconnecting each other and defines four opened receiving channels respectively in four corners thereof. 
   
   
       16 . The liquid-cooling device as claimed in  claim 15 , wherein the cover has two fixing flanges respectively extending outwardly from two lower ends of the inclined faces, and wherein four fixtures are extended downwardly through the engaging flanges and the receiving channels of the housing respectively in sequence and screwed into the base to assemble the cover, the housing and the base of heat exchanger together. 
   
   
       17 . The liquid-cooling device as claimed in  claim 11 , wherein the condensing portions of the heat pipes are spaced from each other and wholly received in the fin set. 
   
   
       18 . The liquid-cooling device as claimed in  claim 13 , wherein the evaporating portions of the heat pipes are received in a plurality of receiving grooves defined in a bottom surface of the base and arranged close to each other to form a flat face in a bottom thereof, the flat face forming a part of the bottom face of the heat exchanger adapted for contacting the electronic device. 
   
   
       19 . The liquid-cooling device as claimed in  claim 18 , wherein each of the evaporating portions have a semicircular cross section and each of the condensing portions has a circular cross section. 
   
   
       20 . A liquid-cooling device for cooling a heat-generating electronic component comprising:
 a heat exchanger having a pair of inclined faces on a top thereof, a liquid inlet and a liquid outlet being respectively provided on the inclined faces, a sealed chamber in liquid communication with the liquid inlet and liquid outlet, and a base having a plurality of heat exchanging members extending into the sealed chamber;   a plurality of heat pipes each having a semicircular evaporating portion embedded in the base and a round condensing portion extending from the evaporating portion, the evaporating portion having a flat face for contacting with the heat-generating electronic component;   a fin set in which the condensing portion extends; and   a fan secured to a front side of the fin set, wherein the fan is located above a rear portion of the heat exchanger and behind the liquid inlet and outlet.