Rotary kinetic fluid motors or pumps – With changing state confined heat exchange mass
Patent
1977-06-03
1980-02-26
Garrett, Robert E.
Rotary kinetic fluid motors or pumps
With changing state confined heat exchange mass
60 3908, 60 3975, 416 96A, F01D 508, F02C 712
Patent
active
041903986
ABSTRACT:
The turbine blades of a gas turbine engine are individually cooled through the internal circulation of a fluid coolant by the thermosiphon principle. Each turbine blade has associated therewith a closed-loop coolant passageway which is rotatable with the turbine rotor disk and which, in one embodiment, passes through a heat exchanger borne by, and rotatable with, a rotatable lubrication duct. The blade internal coolant is placed in heat exchange relationship with engine lubrication oil within the heat exchanger. The heated lubrication oil is then placed in heat exchange relationship with the engine fuel and the fuel thus heated is burned in the combustor, thereby returning at least a portion of the heat removed from the turbine blades to the engine power cycle. The cooling system is designed for simplified blade removal and replacement and the entire turbine can be removed from the engine as a sealed unit. A secondary cooling system is provided as a backup in the unlikely event that cooling effectiveness of one or more of the blade coolant loop passageways is lost.
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TFE-731 Turbofan Engine Pamphlet, Garrett Airesearch, Jan. 31, 1974.
Corsmeier Robert J.
Rauf James P.
Garrett Robert E.
General Electric Company
Lampe, Jr. Robert C.
Lawrence Derek P.
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