Pumps – One fluid pumped by contact or entrainment with another – Jet
Patent
1983-10-03
1985-10-08
Husar, Stephen F.
Pumps
One fluid pumped by contact or entrainment with another
Jet
417151, F04F 900
Patent
active
045457395
ABSTRACT:
Several expedients can start-up a hydrokinetic amplifier powered by operating vapor at subatmospheric pressure. One expedient connects an evacuated region to the discharge region of suction chamber 13 so that subatmospheric pressure vapor flows through vapor input nozzle 12 and into the suction chamber. At this time, liquid admitted through nozzle 11 forms a free liquid jet 20 so that vapor impinges on and condenses in jet 20. Once the collapse of condensing vapor produces a suction in chamber 13, the amplifier starts and the evacuated region disconnects from chamber 13. By another expedient, super atmospheric pressure vapor is condensed in jet 20 to establish a suction, whereupon the vapor supply is switched to subatmospheric pressure operating vapor that is drawn in by the suction produced by collapse of the start-up vapor. Another expedient uses high pressure liquid to produce a low pressure entrainment jet for drawing subatmospheric pressure operating vapor into suction chamber 13. As the vapor condenses in jet 20, its collapse lowers the suction pressure within chamber 13, whereupon a valve 41 switches from start-up liquid to lower pressure operating liquid.
REFERENCES:
patent: 118734 (1871-09-01), Mack
patent: 129491 (1872-07-01), O'Rorke
patent: 697770 (1902-04-01), Allen
patent: 929674 (1909-08-01), Koerting
patent: 944455 (1909-12-01), Metcalfe et al.
patent: 2046887 (1936-07-01), Walch
patent: 2369692 (1945-02-01), Tinker
patent: 3625820 (1971-12-01), Gluntz et al.
Marks' Standard Handbook for Mechanical Engineers, 8th Edition, McGraw-Hill Book Company, pp. 14-14, 14-15.
"Operating Guide for Sellers Hydraulic Jet Cleaners Models B, BX and BZ", Bulletin 420-E.
"Low Level Condensers-Eductor and Multi-Jet Type", Bulletin 5AB, Ametek, Schutte & Koerting Division, 1980.
Helios Research Corp.
Husar Stephen F.
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