Bubble cycling heat exchanger system

Abstract

A bubble cycling heat exchanger system includes a closed fluid cycling loop containing a working fluid therein for removing heat from a heat source thermally coupled to a longitudinally extended heat-conducting block. The closed fluid cycling loop is contacted in proximity to the beat-conducting block with only one side portion thereof near the heat source for establishing a temperature difference and a density difference of the working fluid to aid in achieving a unidirectional flow therein.

What is claimed is:  
     
         1 . A bubble cycling heat exchanger system, comprising: 
 a heat-conducting block thermally coupled to a heat source; and    at least one closed fluid cycling loop containing a working fluid therein, and having a spiral tube defining a plurality of longitudinally arranged coils and a flow-returning tube with two opposing ends respectively connected to corresponding opposing ends of said spiral tube for generating a circulating flow, wherein said coils each have two side portions, one of the two side portions thereof in contact with the heat-conducting block.    
     
     
         2 . The bubble cycling heat exchanger system as recited in  claim 1 , wherein the flow-returning tube is longitudinally disposed and contacted with an inner perimeter of each of said coils.  
     
     
         3 . The bubble cycling heat exchanger system as recited in  claim 1 , further comprising a filling block is arranged on a connected portion between the spiral tube and the flow-returning tube.  
     
     
         4 . The bubble cycling heat exchanger system as recited in  claim 1 , wherein the coils each are formed from a shape selected from the group consisting of a round shape, an ellipse shape a rectangle shape and a trapezoid shape in a cross-sectional contour.  
     
     
         5 . The bubble cycling heat exchanger system as recited in  claim 1 , further comprising a fan installed with the closed fluid cycling loop.  
     
     
         6 . A closed fluid cycling loop containing a working fluid therein for removing heat from a heat source thermally coupled to a longitudinally extended heat-conducting block, comprising: 
 a spiral tube defining a plurality of longitudinally arranged coils, each of said coils having a left-half portion and a right-half portion of an asymmetric cross-sectional contour thereof, the spiral tube being adapted for contact with said heat source at an arbitrary location; and    a flow-returning tube with two opposing ends respectively connected to corresponding opposing ends of said spiral tube for generating a circulating flow.    
     
     
         7 . The closed fluid cycling loop as recited in  claim 6 , further comprising means for generating bubbles adjacent to the heat-conducting block.  
     
     
         8 . The closed fluid cycling loop as recited in  claim 6 , further comprising means for providing an expansion space to inflating gas.  
     
     
         9 . The closed fluid cycling loop as recited in  claim 6 , further comprising means for guiding fluid to flow in a unidirectional direction.  
     
     
         10 . A closed fluid cycling loop containing a working fluid therein, comprising: 
 a plurality of spiral tubes being interlaced together in proximity one to another and each defining a plurality of longitudinally arranged coils; and    a plurality of flow-returning tubes each having two opposing ends respectively connected to corresponding opposing ends of each of said spiral tubes thereby to longitudinally pass through an inner perimeter of each of the coils each of said spiral tubes;    wherein said coils each have a left-half portion and a right-half portion of an asymmetric cross-sectional contour thereof with respect to a heat source thermally coupled to a heat-conducting block for establishing a temperature difference and a density difference of the working fluid to aid in achieving a unidirectional flow therein.    
     
     
         11 . The closed fluid cycling loop as recited in  claim 10 , wherein a left spiral tube of the plurality of spiral tubes has a substantial trapezoid shape in a cross-sectional contour, wherein flow of the working fluid at one side of the loop will be suppressed and flow of the working fluid at an opposing side of the loop will be guided to flow, and thereby to transfer heat in a first predetermined direction.  
     
     
         12 . The closed fluid cycling loop as recited in  claim 11 , wherein a right spiral tube of the plurality of spiral tubes has a substantial trapezoid shape in a cross-sectional contour, wherein flow of the working fluid at one side of the loop will be suppressed and flow of the working fluid at an opposing side of the loop will be guided to flow, and thereby to transfer heat in a second predetermined direction.  
     
     
         13 . The closed fluid cycling loop as recited in  claim 12 , wherein the first predetermined direction is opposite to the second predetermined direction.  
     
     
         14 . The closed fluid cycling loop as recited in  claim 13 , wherein a middle spiral tube of the plurality of spiral tubes has a first joint end and a second joint end connected to a first joint end of said right spiral tube, said right spiral tube has a second joint end connected to a first joint end of said left spiral tube, and said left spiral tube has a second joint end connected to said first joint end of said middle spiral tube for generating a circulating flow.