Heat-activated pump with integrated evaporator for electronic chip heat removal

A heat-activated pump for removal of waste heat from an electronic chip, comprising:

• the electronic chip generating the waste heat;
• an evaporator containing a working fluid, the evaporator built into and integrated with a packaging of the electronic chip to receive the waste heat from the electronic chip to convert a liquid phase of the working fluid into a vapor of the working fluid;
• a pressure-control safety valve coupled to an exit port of the evaporator and maintaining the working fluid in the evaporator at a set target pressure and allowing the vaporized working fluid to escape through the exit port whenever the set target pressure is exceeded;
• a liquid-piston chamber coupled to the pressure-control valve to receive the vaporized working fluid from the evaporator at the set target pressure, the vaporized working fluid expanding adiabatically and displacing a liquid within the liquid-piston chamber, the liquid comprising the liquid phase of the working fluid, expelling the liquid from the liquid-piston chamber in a pumping stage of a thermodynamic cycle;
• a unidirectional pump-exit check valve coupled to a first exit port of the liquid-piston chamber to allow the working fluid and/or the displaced liquid to exit the liquid-piston chamber;
• a unidirectional liquid suction-entry check valve coupled to a return port of the liquid-piston chamber to allow the displaced liquid to enter the liquid-piston chamber;
• a heat exchanger with a heatsink, the heat exchanger coupled to the unidirectional pump-exit check valve to receive the displaced liquid into the heat exchanger, and the unidirectional liquid suction-entry check valve to allow the displaced liquid to return to the liquid-piston chamber in a suction stage of the thermodynamic cycle, the heatsink radiating the waste heat away to a flow of cooler fluid;
• and
• a unidirectional injector return check valve coupled to both a second exit port of the liquid-piston chamber and an input port of the evaporator, wherein periodic pressure pulses of the liquid phase of the working fluid from the liquid-piston chamber that temporarily exceed the set target pressure in the evaporator facilitate jets of the liquid phase of the working fluid to replenish the evaporator in successive brief spurts.