Rotary kinetic fluid motors or pumps – Runner or blade selectively adjustable relative to casing – Axially adjusted
Patent
1983-12-08
1989-05-09
Garrett, Robert E.
Rotary kinetic fluid motors or pumps
Runner or blade selectively adjustable relative to casing
Axially adjusted
415 48, 415157, 123 4144, F01P 716, F01D 700
Patent
active
048284556
ABSTRACT:
A variable-capacity water pump includes a pump impelled fixed to a rotatable shaft for forcibly feeding cooling water from a cooling water passage, a mechanical seal disposed behind the pump impeller, a temperature sensor such as a thermostat mounted on the rotatable shaft and disposed in the cooling water passage for detecting the temperature of the cooling water, a thrust shaft disposed coaxially with the rotatable shaft and axially movable by the temperature sensor, and a disk secured to the thrust shaft for axial movement therewith, the disk being axially movable by the temperature sensor for varying a range of operation of the pump impeller. In response to a variation in the temperature of the cooling water, the temperature sensor axially moves the thrust shaft and hence the disk to vary the range of operation of the impeller, thereby changing the quantity of the cooling water flowing through the water pump. The water pump of the present invention can supply a quantity of cooling water necessary and sufficient to cope with the detected temperature of the cooling water without any unwanted power loss and with an increased degree of efficiency.
REFERENCES:
patent: 17246 (1857-05-01), Wright
patent: 2047028 (1936-07-01), Metcalfe
patent: 2075498 (1937-03-01), Bondurant
patent: 2114567 (1938-04-01), Mercur
patent: 2927536 (1960-03-01), Rhoades
patent: 2957424 (1960-10-01), Brundage
patent: 4417849 (1983-11-01), Morris
Kinbara Minoru
Toyoda Hiroaki
Aisin Seiki Kabushiki Kaisha
Garrett Robert E.
Kapsalas George
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