Heat transport device
A heat transport device in a container having an internal space filled with a working fluid, includes an evaporator which causes the working fluid to evaporate, a condenser separated from the evaporator and which causes the working fluid to condense, and an intermediate part arranged between the evaporator and the condenser and having at least one main groove which extends continuously from the condenser to the evaporator through the intermediate part. A part or entirety of main grooves among the at least one main groove is a sloped groove having a sloped groove bottom that, when viewing a cross section along an extending direction of the main groove, slopes from a groove bottom position of a groove portion positioned at the condenser towards a groove bottom position of the groove portion positioned at the evaporator, so as to approach a bottom surface of the heat transport device.
1. A heat transport device having a container with an internal space in which a working fluid is filled, comprising:
an evaporator;
a condenser which is arranged at a position separated from the evaporator; and
an intermediate part arranged between the evaporator and the condenser,
wherein the evaporator causes the working fluid to evaporate,
wherein the condenser causes the working fluid to condense,
wherein at least one main groove which extends continuously from the condenser to the evaporator through the intermediate part is formed in the container,
wherein a part or entirety of main grooves among the at least one main groove is a sloped groove having a sloped groove bottom that, when viewing a cross section along an extending direction of the main groove, slopes from a groove bottom position of a groove portion positioned at the condenser towards a groove bottom position of the groove portion positioned at the evaporator, so as to approach a bottom surface of the heat transport device, and
wherein a portion linking a center position of the condenser and a center position of the evaporator when viewing a cross section along the extending direction of the sloped groove, has an average sloping angle relative to a heat input surface of the container in a range of at least 1 degree and no more than 30 degrees.
2. The heat transport device according to claim 1 , wherein the sloped groove is formed so that a plate thickness of the container positioned directly below the sloped groove bottom becomes thinner from the groove portion positioned at the condenser toward the groove portion positioned at the evaporator.
3. The heat transport device according to claim 1 , wherein the sloped groove bottom of the sloped groove is formed at the groove portion position at the condenser and extends at least to the groove portion positioned at the intermediate part.
4. The heat transport device according to claim 1 , wherein the sloped groove bottom is formed over an entire length of the sloped groove.
5. The heat transport device according to claim 1 , wherein an opening groove width of the sloped groove is in a range of at least 1 μm and no more than 1,000 μm.
6. The heat transport device according to claim 1 , wherein the at least one main groove formed in the container is two or more of the sloped grooves,
wherein the sloped grooves are arranged in parallel with an interval from each other, and
wherein the internal space is formed by a groove internal space parts divided by the sloped groove, and a groove external space part formed above an opening end of the sloped groove.
7. The heat transport device according to claim 6 , wherein the container further includes at least one auxiliary groove extending in a direction crossing the main groove, at the evaporator.
8. The heat transport device according to claim 1 , wherein the container further includes a porous material at an inner surface portion of the evaporator facing the internal space, and
wherein the porous material is configured by a sintered compact which is sintered to include metal or alloy of powder, fiber, flake, porous or fragment form.
9. The heat transport device according to claim 1 , wherein the container comprises copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, steel alloy, titanium or titanium alloy.
10. The heat transport device according to claim 1 , wherein the container is formed from a plurality of metal sheets, and is used as a vapor chamber.
11. The heat transport device according to claim 1 , wherein the container is used as a heat pipe formed by a tubular container having a rectangular cross-sectional shape.
12. The heat transport device according to claim 2 , wherein the sloped groove bottom of the sloped groove is formed at the groove portion positioned at the condenser and extends at least to the groove portion positioned at the intermediate part.
13. The heat transport device according to claim 2 , wherein the sloped groove bottom is formed over an entire length of the sloped groove.
14. The heat transport device according to claim 2 , wherein an opening groove width of the sloped groove is in a range of at least 1 μm and no more than 1,000 μm.
15. The heat transport device according to claim 2 , wherein the at least one main groove formed in the container is two or more of the sloped grooves,
wherein the sloped grooves are arranged in parallel with an interval from each other, and
wherein the internal space is formed by a groove internal space parts divided by the sloped groove, and a groove external space part formed above an opening end of the sloped groove.
16. The heat transport device according to claim 2 , wherein the container further includes a porous material at an inner surface portion of the evaporator facing the internal space, and
wherein the porous material is configured by a sintered compact which is sintered to include metal or alloy of powder, fiber, flake, porous or fragment form.
17. The heat transport device according to claim 2 , wherein the container comprises copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, steel alloy, titanium or titanium alloy.
18. The heat transport device according to claim 2 , wherein the container is formed from a plurality of metal sheets, and is used as a vapor chamber.
19. A heat transport device having a container in which a working fluid is filled in an internal space, comprising:
an evaporator which causes the working fluid to evaporate;
a condenser which is arranged at a position separated from the evaporator and causes the working fluid to condense; and
an intermediate part arranged between the evaporator and the condenser,
wherein the evaporator causes the working fluid to evaporate,
wherein the condenser causes the working fluid to condense,
wherein at least one main groove which extends continuously from the condenser to the evaporator through the intermediate part is formed in the container,
wherein a part or entirety of main grooves among the at least one main groove is a sloped groove having a sloped groove bottom that, when viewing a cross section along an extending direction of the main groove, slopes from a groove bottom position of a groove portion positioned at the condenser towards a groove bottom position of the groove portion positioned at the evaporator, so as to approach a bottom surface of the heat transport device,
wherein the at least one main groove formed in the container is two or more of the sloped grooves,
wherein the sloped grooves are arranged in parallel with an interval from each other, and
wherein the internal space is formed by a groove internal space parts divided by the sloped groove, and a groove external space part formed above an opening end of the sloped groove.
20. A heat transport device having a container in which a working fluid is filled in an internal space, comprising:
an evaporator which causes the working fluid to evaporate;
a condenser which is arranged at a position separated from the evaporator and causes the working fluid to condense; and
an intermediate part arranged between the evaporator and the condenser,
wherein the evaporator causes the working fluid to evaporate,
wherein the condenser causes the working fluid to condense,
wherein at least one main groove which extends continuously from the condenser to the evaporator through the intermediate part is formed in the container,
wherein a part or entirety of main grooves among the at least one main groove is a sloped groove having a sloped groove bottom that, when viewing a cross section along an extending direction of the main groove, slopes from a groove bottom position of a groove portion positioned at the condenser towards a groove bottom position of the groove portion positioned at the evaporator, so as to approach a bottom surface of the heat transport device, and
wherein the container further includes at least one auxiliary groove extending in a direction crossing the main groove, at the evaporator.