US 12,000,658 B2
Heat transport system and transportation machine
Yu Haruki, Kobe (JP); Keiji Sakagawa, Kobe (JP); Kazuhide Hakamada, Kobe (JP); and Ryosuke Mitani, Kobe (JP)
Assigned to KAWASAKI JUKOGYO KABUSHIKI KAISHA, Kobe (JP)
Appl. No. 17/418,248
Filed by Kawasaki Jukogyo Kabushiki Kaisha, Kobe (JP)
PCT Filed Dec. 24, 2019, PCT No. PCT/JP2019/050595
§ 371(c)(1), (2) Date Jun. 25, 2021,
PCT Pub. No. WO2020/138077, PCT Pub. Date Jul. 2, 2020.
Claims priority of application No. 2018-245270 (JP), filed on Dec. 27, 2018.
Prior Publication US 2022/0090866 A1, Mar. 24, 2022
Int. Cl. F28D 15/02 (2006.01); B64C 1/00 (2006.01); F28D 15/06 (2006.01); F28D 15/04 (2006.01); F28D 21/00 (2006.01)
CPC F28D 15/0266 (2013.01) [B64C 1/00 (2013.01); F28D 15/06 (2013.01); F28D 2015/0216 (2013.01); F28D 15/043 (2013.01); F28D 2021/0021 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A heat transport system incorporated into a transportation machine, comprising:
a loop heat pipe charged with a working fluid, the loop heat pipe including:
an evaporator that changes at least a part of the working fluid from a liquid phase into a gas phase by heat absorbed from a heat source,
a condenser located above the evaporator to change the working fluid from the gas phase into the liquid phase,
a vapor conduit connecting an outlet of the evaporator and an inlet of the condenser, and
a liquid conduit connecting an outlet of the condenser and an inlet of the evaporator;
a pump disposed in the liquid conduit or the vapor conduit to exert a circulation drive force on the working fluid;
a tilt sensor that detects a tilt of the loop heat pipe;
a temperature sensor that detects a temperature of the heat source; and
a controller that controls operation of the pump, wherein:
the working fluid in the liquid conduit flows from the condenser to the evaporator without being subjected to an action of the pump when the pump is at rest, and is forced to flow from the condenser to the evaporator under the action of the pump when the pump is running,
the controller is configured to:
run the pump if the tilt is greater than a predetermined tilt threshold and the temperature of the heat source is higher than a predetermined first temperature threshold;
stop the pump if the tilt is greater than the predetermine tilt threshold and the temperature of the heat source is equal to or lower than the first temperature threshold;
run the pump if the tilt is equal to or smaller than the predetermined tilt threshold and the temperature of the heat source is higher than a predetermined second temperature threshold; and
stop the pump if the tilt is equal to or smaller than the predetermined tilt threshold and the temperature of the heat source is equal to or lower than the second temperature threshold, and
the first temperature threshold is lower than the second temperature threshold.