Patent ID: 11898578
Assignee: HAMFOP TECHNOLOGIES LLC
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC H  F  Y | IPC F

Claim 18:
19. A method of operating a heat-activated multiphase fluid-operated pump, comprising:
applying external heat to a hot chamber convert a working fluid therein to vapor;
allowing, whenever a set target pressure in the hot chamber is exceeded, the vaporized working fluid to escape into a liquid-piston chamber through a pressure-control safety valve coupled to an exit port of the hot chamber, the vaporized working fluid expanding adiabatically and displacing liquid within the liquid-piston chamber to expel the liquid from the liquid-piston chamber through an exit port with a unidirectional pump-exit check valve in a pumping stage of a thermodynamic cycle;
returning jets of condensed fluid to the hot chamber through an input port coupled to a unidirectional vapor-injector return check valve in periodic pressure pulses from the liquid-piston chamber that temporarily exceed the pressure in the hot chamber;
receiving the displaced liquid from the liquid-piston chamber in a condenser coupled to the pump-exit check valve;
allowing condensed liquid in the condenser to return through a unidirectional liquid suction-entry check valve coupled to a return port of the liquid-piston chamber in suction stage of the thermodynamic cycle; and
repeating the foregoing steps in multiple pump cycles.