Pumps – Motor driven – Fluid motor
Patent
1982-01-11
1984-01-24
Smith, Leonard E.
Pumps
Motor driven
Fluid motor
F04B 1700, F04B 4306
Patent
active
044273509
ABSTRACT:
The expansions and contractions of a diaphragm into and out of a pumping chamber for the purpose of pumping fluid from the chamber are provided by pressurizations and depressurizations against the diaphragm, produced by alternate vaporization and condensation of a volatile liquid which is moved to a vaporization chamber through two separate feed lines, one line carrying cooled liquid for condensing expanded vapor and the other line carrying liquid that is vaporized by a heat source immediately before entry to the chamber. The liquid flow through one feed line alternates with the flow through the other to provide first vaporization and pressure and then condensation and depressurization, and the heat application to the one liquid flow produces vaporization and pressure from the liquid as it enters the chamber in order to remove the requirement of a boiler or pressure storage tank. Since both the inlet and outlet of the small exciter pump that moves the streams of liquid to and from the chamber are always at approximately the same pressure as that in the chamber, the exciter pump energy requirement is very small.
REFERENCES:
patent: 116025 (1871-06-01), Clow et al.l
patent: 3937599 (1976-02-01), Thureau et al.
patent: 4033118 (1977-07-01), Powell
patent: 4068476 (1978-01-01), Kelsey
patent: 4177019 (1979-12-01), Chadwick
patent: 4309148 (1982-01-01), O'Hare
patent: 4347045 (1982-08-01), Burnham
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