Turbocharger turbine wheel and shaft assembly

Details Turbocharger turbine wheel and shaft assembly Turbocharger turbine wheel and shaft assembly

1994-10-13

1996-07-16

Koczo, Michael

Fluid reaction surfaces (i.e., impellers)

Multiple axially spaced working members

416244A, F01D 502

Patent

active

055361447

ABSTRACT:
A turbine wheel for a turbocharger or the like is mounted to an impeller shaft and optionally an additional drive shaft by annular rows of coupling teeth preferably of the CURVIC.TM. coupling type having radially and rotationally locking convex sided and concave sided interlocking teeth. Flexible webs connecting coupling rings on the turbine allow thermo and mechanical growth of the turbine wheel without excessive deflection of the coupling rings and the associated shaft flanges. A single central stud threaded into one of the shafts and retained by a bolt against the other maintains the components in assembly with the coupling teeth fully engaged. A radial slot formed in the coupling flange for one of the shafts prevents thermal distortion of the flange from substantially affecting an adjacent thrust bearing portion of the flange. The arrangement simplifies rotor assembly and avoids the need for rebalancing after disassembly and reassembly. The full width of the coupling teeth are available for the transmission of torque and radial alignment forces.

REFERENCES:
patent: 2801070 (1957-07-01), Purvis et al.
patent: 3356339 (1967-12-01), Thomas et al.
patent: 4123199 (1978-10-01), Shimizu et al.
patent: 5163816 (1992-11-01), Goetzke
Abstract of Turbine Apparatus, Albert S. Thompson, Westinghouse Electric Corporation, published Jan. 30, 1951 at 642 O.G. 1479.

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