Heat transport apparatus and heat transport apparatus manufacturing method

A heat transport device comprising:

• a vaporization unit including;
• a first base plate having a liquid suction and retention unit for sucking and retaining a liquid-phase working fluid by capillary force;
• a second base plate facing the first base plate, having a face provided with a concavity functioning as a vaporization chamber for vaporizing the liquid-phase working fluid retained in the liquid suction and retention unit to a gas-phase working fluid, and comprising a material having a thermal conductivity lower than that of silicon;
• and
• a thermoplastic or thermosetting resin material for bonding the first and second base plates;
• a liquefaction unit including;
• a third base plate;
• a fourth base plate facing the third base plate, having a face provided with a concavity functioning as a liquefaction chamber for liquefying the gas-phase working fluid to the liquid-phase working fluid, and comprising a material having a thermal conductivity lower than that of silicon;
• and
• a thermoplastic or thermosetting resin material for bonding the third and fourth base plates;
• a channel for transporting the gas-phase working fluid from the vaporization unit to the liquefaction unit;
• and
• a channel for transporting the liquid-phase working fluid from the liquefaction unit to the vaporization unit.

A method for manufacturing a heat transport device, comprising:

• a step of forming a first base plate including a liquid suction and retention unit for sucking and retaining a liquid-phase working fluid by capillary force;
• a step of forming a second base having a face provided with a first concavity functioning as a vaporization chamber for vaporizing the liquid-phase working fluid retained in the liquid suction and retention unit to a gas-phase working fluid, a second concavity functioning as a liquefaction chamber for liquefying the gas-phase working fluid vaporized at the vaporization chamber to the liquid-phase working fluid, a first ditch functioning as a channel for transporting the gas-phase working fluid from the vaporization chamber to the liquefaction chamber, and a second ditch functioning as a channel for transporting the liquid-phase working fluid from the liquefaction chamber to the liquid suction and retention unit;
• a step of laminating the first base plate, a thermoplastic or thermosetting resin material, and the second base plate;
• and
• a step of bonding the first and the second base plates with the thermoplastic or thermosetting resin material by heating the composite of the first base plate, the thermoplastic or thermosetting resin material, and the second base plate under a pressurized condition.