Gas turbine engine with hot gas recirculation pocket

Details Gas turbine engine with hot gas recirculation pocket Gas turbine engine with hot gas recirculation pocket

1994-12-23

1996-08-13

Kwon, John T.

Rotary kinetic fluid motors or pumps

With passage in blade, vane, shaft or rotary distributor...

415116, F01D 1102

Patent

active

055450040

ABSTRACT:
A hot gas recirculation pocket is provided in a gas turbine engine to capture hot gas ingested from an annular hot gas flow path into an internal cooled engine cavity, and to recirculate the ingested hot gas to the hot gas flow path. The engine includes rows of stator vanes and rotor blades mounted in an axially alternating sequence along the hot gas flow path, wherein the rotor blades are peripherally supported by rotor disks disposed within the cooled engine cavity and coupled to a main engine shaft. The recirculation pocket is defined by a contoured shroud mounted within the cooled engine cavity to form a radially outwardly open toroidal-shaped pocket for capturing and recirculating any hot gas ingested through the space between adjacent rows of stator vanes and rotor blades.

REFERENCES:
patent: 2598176 (1952-05-01), Johnstone
patent: 3318573 (1967-05-01), Matsuki et al.
patent: 3321179 (1967-05-01), Johnson et al.
patent: 3609057 (1971-09-01), Redtke
patent: 4103899 (1978-08-01), Turner
patent: 4177004 (1979-12-01), Riedmiller et al.
patent: 4582467 (1986-04-01), Kisling
patent: 5211533 (1993-05-01), Walker et al.
patent: 5215435 (1993-06-01), Webb et al.
patent: 5252026 (1993-10-01), Shepherd

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