Device temperature regulator

A device temperature regulator in which a working fluid circulates and which regulates a temperature of a target device by a phase change between a liquid phase and a gas phase of the working fluid, the device temperature regulator comprising:

• a heat absorber that causes the working fluid to absorb heat from the target device, so as to evaporate the working fluid;
• a heat radiator that is arranged above the heat absorber and that causes the working fluid to radiate heat, so as to condense the working fluid;
• a forward passage in which a forward flow passage is provided, the forward flow passage causing the working fluid to flow to the heat absorber from the heat radiator;
• a backward passage in which a backward flow passage is provided, the backward flow passage causing the working fluid to flow to the heat radiator from the heat absorber;
• a bubble generator configured to generate a bubble in the working fluid collecting in the heat absorber and having the liquid phase;
• and
• a controller configured to cause the bubble generator to generate the bubble, (i) when the working fluid circulates in a fluid circulation circuit made of the heat radiator, the forward passage, the heat absorber and the backward passage, to cool the target device, and (ii) when an upstream side area of the working fluid within the heat absorber is the liquid phase and a downstream side area of the working fluid within the heat absorber is the gas phase.

A device temperature regulator for regulating a temperature of a target device by a phase change between a liquid phase and a gas phase of the working fluid, the device temperature regulator comprising:

• a heat absorber disposed in a fluid circulation circuit in which the working fluid circulates, to evaporate the working fluid by absorbing heat from the target device;
• a heat radiator disposed in the fluid circulation circuit above the heat absorber and configured to condense the working fluid by radiating heat;
• a forward passage through which the working fluid flows to the heat absorber from the heat radiator in the fluid circulation circuit;
• a backward passage through which the working fluid flows to the heat radiator from the heat absorber in the fluid circulation circuit;
• a heater disposed at the heat absorber to heat the working fluid, the heater being configured to generate a bubble in the working fluid of the liquid phase in the heat absorber by heating the working fluid;
• and
• a controller configured to cause the heater to generate the bubble, when at least one of a condition where a circulation flow rate of the working fluid circulating in the fluid circulation circuit is a specified flow rate or less, a condition where the heat absorber is inclined by a specified angle or more with respect to a reference posture, or a condition where an upstream side area of the working fluid within the heat absorber is the liquid phase and a downstream side area of the working fluid within the heat absorber is the gas phase, is satisfied, in a case where the working fluid circulates in a fluid circulation circuit made of the heat radiator, the forward passage, the heat absorber and the backward passage, to cool the target device.