Rotary kinetic fluid motors or pumps – With control means responsive to non-cyclic condition... – Casing – runner – or shaft position or extent of motion...
Patent
1986-12-12
1988-08-09
Schwartz, Larry I.
Rotary kinetic fluid motors or pumps
With control means responsive to non-cyclic condition...
Casing, runner, or shaft position or extent of motion...
415 26, 415118, F04D 2900
Patent
active
047624612
ABSTRACT:
A leakless pump for sucking and delivering a liquid includes a rotor having an impeller thereon and rotatably journaled by bearings, and a casing surrounding the rotor and the impeller. The pump comprises a bypath for flowing part of the liquid from a high pressure portion in the proximity of an outer circumference of the impeller to a low pressure portion on a side of an inlet of the pump, at least one pressure detecting aperture formed in the casing and having an inner end communicating with the bypath for measuring change in pressure in the bypath due to wear of at least one of the bearings, and pressure detecting means provided at an outer end of the pressure detecting aperture for detecting pressure change in the bypath, thereby detecting the change in pressure to detect wear of the bearings. The leakless pump is preferably further provided with at least one pressure detecting aperture opening in the high pressure portion to detect the pressure therein, thereby more exactly detecting the bearing wear by pressure difference between pressures in the bypath and the high pressure portion.
REFERENCES:
patent: 2839071 (1958-06-01), Rosch
patent: 2888023 (1959-05-01), Eggenberger
patent: 3002374 (1961-10-01), Jacobs
patent: 3220244 (1965-11-01), Donelly
patent: 3542494 (1970-11-01), Sato
patent: 3797451 (1974-03-01), Tiraspolsky
patent: 3861818 (1975-01-01), Eggenberger
patent: 4302963 (1981-12-01), Collins
patent: 4613289 (1986-09-01), Kotera
NGK Insulators Ltd.
Schwartz Larry I.
LandOfFree
Leakless pump does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Leakless pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Leakless pump will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-915898