Heat pipe

Abstract

A heat pipe comprises a housing that has a heating section that is made of metal and is contacted by a heating element, a cooling section that is made of metal and is cooled by a cooling element, and a plurality of refrigerant flow channels formed inside the housing from the heating section to the cooling section; refrigerant that is enclosed inside the plurality of refrigerant flow channels; and heat-insulating layers that are disposed between the plurality of refrigerant flow channels located at least at the heating section in the housing.

1 . A heat pipe comprising:
 a housing that has
 a heating section that is made of metal and is contacted by a heating element, 
 a cooling section that is made of metal and is cooled by a cooling element, and a plurality of refrigerant flow channels formed inside the housing from the heating section to the cooling section; 
   refrigerant that is enclosed inside the plurality of refrigerant flow channels; and   heat-insulating layers that are disposed between the plurality refrigerant flow channels located at least at the heating section in the housing.   
     
     
         2 . The heat pipe according to claim I, wherein
 in the housing, groove portions are formed in partition walls between the plurality of refrigerant flow channels, and   the heat-insulating layers are formed by a heat-insulating material filling the groove portions.   
     
     
         3 . The heat pipe according to  claim 1 , wherein
 in the housing, a plurality of hole portions are formed from the heating section to the cooling section,   any hole portions of the plurality of hole portions are made to serve as the plurality of refrigerant flow channels, and   the heat-insulating layers are formed as a result of the insides of remaining hole portions of the plurality of hole portions being filled with a heat-insulating material.   
     
     
         4 . The heat pipe according to  claim 1 , wherein
 the housing has
 a main body portion that has a plate-like base portion and a plurality of fins that extend in a normal direction from the base portion and are formed in parallel to each other and 
 a cover portion that opposes the base portion and is fixed to distal ends of the plurality of fins, 
 any groove portions of groove portions between the plurality of fins are made to serve as the plurality of refrigerant flow channels, and 
   the heat-insulating layers are formed as a result of the insides of remaining groove portions of the groove portions between the plurality of fins being filled with a heat-insulating material.   
     
     
         5 . The heat pipe according to  claim 1 , wherein the housing further has a heat-insulating section between the heating section and the cooling section. 
     
     
         6 . The heat pipe according to  claim 5 , wherein
 both lengthwise direction sides of the plurality of refrigerant flow channels open to an end face of the housing on the heating section side and to an end face of the housing on the cooling section side, and   the heat pipe further comprises a pair of closing portions that are disposed on the end face of the housing on the heating section side and the end face of the housing on the cooling section side and that close openings on both lengthwise direction sides of the plurality of refrigerant flow channels.   
     
     
         7 . The heat pipe according to  claim 6 , wherein the pair of closing portions, the heat-insulating section, and the heat-insulating layers are formed integrally from a resin.