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US 2022/0090866 A1Published application
Heat transport system and transportation machine
AssigneeKawasaki Jukogyo Kabushiki Kaisha
InventorsYu HARUKI, Keiji SAKAGAWA, Kazuhide HAKAMADA, Ryosuke MITANI
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Abstract
A heat transport system includes: a two-phase closed loop heat pipe; a pump disposed in a liquid conduit or a vapor conduit of the loop heat pipe to exert a circulation drive force on a working fluid; a tilt sensor that detects a tilt of the loop heat pipe; and a controller configured to run the pump if the tilt is greater than a predetermined tilt threshold and stop the pump if the tilt is equal to or smaller than the tilt threshold.
Claims10
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;
- and
- a controller that controls operation of the pump based on the tilt, wherein
- the working fluid in the liquid conduit flows from the condenser to the evaporator without being subjected to the 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, and
- the controller is configured to run the pump if the tilt is greater than a predetermined tilt threshold and stop the pump if the tilt is equal to or smaller than the tilt threshold.
8 more elements
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 the 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, and
- 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 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 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 tilt threshold and the temperature of the heat source is equal to or lower than the second temperature threshold.
14 more elements
Dependencies are inferred from the claim text.