Flat loop Heat pipe

Abstract

A flat loop heat pipe is formed of a first capillary core, a second capillary core, a first support member, and a second support member. The first capillary core and the first support member constitute an evaporation room. The second capillary core and the second support member constitute a compensation room. In light of this structure, it is not difficult to activate circulation of thermal dissipation under low-watt heat source and the first capillary core can avoid dry-out phenomenon.

1 . A flat LHP comprising:
 a container having a case, a cover, and a chamber formed therein between the case and the cover, the chamber having two opening, one of which is a vapor outlet and the other is a liquid inlet, the distance between a center of the vapor outlet and a bottom side of the case being smaller than the distance between a center of the liquid inlet and the bottom side of the case, the cover being in airtight connection with the case;   at least one sleeve-shaped capillary core having a plurality of pores and located at a bottom side of the container and in airtight connection with the vapor outlet;   a circulatory pipeline having a vapor line, a condensation line, and a liquid reflux line, the vapor line connected with the vapor outlet in airtight for guiding flowage of vapors, the condensation line having an end in airtight connection with the vapor line, the liquid reflux line having two ends, one of which is in airtight connection with the other end of the condensation line and the other of which is in airtight connection with the liquid inlet; and   a working fluid infused into the circulatory pipeline to become a medium of heat absorption and release.   
   
   
       2 . The flat LHP as defined in  claim 1 , wherein the at least one capillary core comprises a close end and an open end, the open end being in airtight connection with the vapor outlet. 
   
   
       3 . The flat LHP as defined in  claim 2  further comprising at least one sleeve-shaped support member, wherein the at least one support member has a close end, an open end, and a plurality of pores, the at least one support member being sleeved into the at least one capillary core by their two close ends stopped against each other to become an evaporation module. 
   
   
       4 . The flat LHP as defined in  claim 1 , wherein the at least one capillary core is two in number, one of which is a first capillary core and the other is a second capillary core, the first capillary core being located at a bottom side of the container and in airtight connection with the vapor outlet, the second capillary core being located at a top side of the container and in airtight connection with the liquid inlet. 
   
   
       5 . The flat LHP as defined in  claim 4  further comprising two sleeve-shaped support members, one of which is a first support member and the other is a second support member, wherein each of the support members has a close end, an open end, and a plurality of pores disposed thereon, the first support member being sleeved into the first capillary core by that their close ends are stopped against each other in such a way that an evaporation module is formed, the second support member being sleeved into the second capillary core by that their close ends are stopped against each other in such a way that a compensation module is formed. 
   
   
       6 . The flat LHP as defined in  claim 4 , wherein the sum of height of the first and second capillary cores is larger than that of the container. 
   
   
       7 . The flat LHP as defined in  claim 5 , wherein the sum of the height of the evaporation and compensation modules is larger than that of the container. 
   
   
       8 . The flat LHP as defined in  claim 1 , wherein the condensation line comprises a heat sink mounted to an external periphery thereof. 
   
   
       9 . The flat LHP as defined in  claim 1  further comprising an injection port, which is formed between the evaporation line and the liquid reflux line. 
   
   
       10 . The flat LHP as defined in  claim 1 , wherein the vapor outlet and the liquid inlet are located at a left side and a right side of the container respectively. 
   
   
       11 . The flat LHP as defined in  claim 4 , wherein each of the first and second capillary cores is a metallic net having at least 100 meshes. 
   
   
       12 . The flat LHP as defined in  claim 5 , wherein each of the first and second support members is a metallic net having at least 20 meshes. 
   
   
       13 . A flat LHP comprising:
 a container having a chamber defining two openings, one of which is a vapor outlet and the other is a liquid inlet;   a sleeve-shaped evaporation module having a plurality of pores and an evaporation room formed therein, the evaporation room being located at a bottom side of the container and in airtight connection with the vapor outlet;   a circulatory pipeline having an end in airtight connection with the vapor outlet and the other end in airtight connection with the liquid inlet; and   a working fluid infused into the circulatory pipeline to become a medium of heat absorption and release.   
   
   
       14 . The flat LHP as defined in  claim 13  further comprising a sleeve-shaped compensation module, wherein the compensation module has a plurality of pores disposed thereon and a compensation room formed therein, the compensation room being located at a top side of the container and in airtight connection with the liquid inlet.