Rotary kinetic fluid motors or pumps – Plural runners supported for relative motion or on separate... – Radial flow through concentric radially spaced blade rows
Patent
1979-10-26
1981-02-24
Freeh, William L.
Rotary kinetic fluid motors or pumps
Plural runners supported for relative motion or on separate...
Radial flow through concentric radially spaced blade rows
415 66, 415 68, 415 69, F01D 120, F01D 122
Patent
active
042525004
ABSTRACT:
A steam turbine comprising a housing in which there are at least two rotors turning on a common axis in the same direction but at different speeds. The rotors are connected by gearing preferably located externally of the housing. In the preferred form, the faster rotating rotor is driven by steam from a first steam nozzle or nozzles. The adjacent slower rotating rotor is driven by steam from a second steam nozzle or nozzles. Specially arranged vanes on the slower rotor and fixed vanes on the housing enable the expanding steam to react between the first and second rotors and the second rotor and the housing to obtain the desired power output from the steam.
In a modification, the second rotor has ports therethrough which extend diagonally backward and outward from the interior side of the second rotor to the exterior side so that some of the steam from the first steam nozzle if of higher pressure can pass through the diagonal ports to engage the fixed vanes on the housing.
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patent: 3328961 (1967-07-01), Aschauer
patent: 3635576 (1972-01-01), Wieckmann
Chittick C. Yardley
Freeh William L.
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