Copper porous body for vaporization members, evaporative cooler and heat pipe

Abstract

This copper porous body for vaporization members is a copper porous body for vaporization members used as a vaporization member which vaporizes a liquid phase medium that comes into contact with the vaporization member, the copper body is composed of a sintered body of a plurality of copper fibers, and has a stem having a three-dimensional network structure. A porosity is in a range of 65% or more and 95% or less, an opening diameter is in a range of 100 μm or more and 2,000 μm or less, and a standardized specific surface area S D =S×R defined as a product of a specific surface area S (m 2 /g) and a diameter R (m) of the copper fiber is in a range of 0.001 or more and 0.25 or less.

1 . A copper porous body for vaporization members used as a vaporization member which vaporizes a liquid phase medium that comes into contact with the vaporization member,
 wherein the copper body is composed of a sintered body of a plurality of copper fibers, and has a stem having a three-dimensional network structure, a porosity of in a range of 65% or more and 95% or less, an opening diameter of in a range of 100 μm or more and 2,000 μm or less, and   a standardized specific surface area S D =S×R defined as a product of a specific surface area S (m 2 /g) and a diameter R (m) of the copper fiber is in a range of 0.001 or more and 0.25 or less.   
     
     
         2 . The copper porous body for vaporization members according to  claim 1 ,
 wherein the diameter R of the copper fiber is in a range of 0.02 mm or more and 1 mm or less, and   a ratio L/R of a length L to the diameter R of the copper fiber is in a range of 4 or more and 2,500 or less.   
     
     
         3 . An evaporative cooler comprising:
 a boiling unit which receives heat from a heating element to vaporize a liquid phase medium,   wherein the copper porous body for vaporization members according to  claim 1  is disposed in the boiling unit.   
     
     
         4 . A heat pipe comprising:
 an evaporation unit which receives heat from a heating element to vaporize a liquid phase medium; and   a condensation unit which liquefies the gas phase medium generated by the evaporation unit,   wherein the copper porous body for vaporization members according to  claim 1  is disposed as an evaporation unit wick disposed in the evaporation unit.   
     
     
         5 . An evaporative cooler comprising:
 a boiling unit which receives heat from a heating element to vaporize a liquid phase medium,   wherein the copper porous body for vaporization members according to  claim 2  is disposed in the boiling unit.   
     
     
         6 . A heat pipe comprising:
 an evaporation unit which receives heat from a heating element to vaporize a liquid phase medium; and   a condensation unit which liquefies the gas phase medium generated by the evaporation unit,   wherein the copper porous body for vaporization members according to  claim 2  is disposed as an evaporation unit wick disposed in the evaporation unit.