Multi-zone diffuser for turbomachine

Details Multi-zone diffuser for turbomachine Multi-zone diffuser for turbomachine

1993-07-29

1994-08-16

Kwon, John T.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Vane or deflector

F01D 700

Patent

active

053381556

ABSTRACT:
A multi-zone diffuser for an axial-flow turbomachine has a minimal overall length and a first zone with a minimal diameter. The kink angles of the diffuser inlet both at the hub and at the cylinder of the turbomachine are fixed exclusively for evening out the total pressure profile over the duct height at the outlet from the last rotor blade row. In the form of streamlined struts, are provided within the deceleration zone of the diffuser for the removal of swirl from the swirling flow. A first diffusion zone extends from the outlet plane of the last rotor blade row to a plane at the outlet of the streamlined struts and is configured as a single duct and as a bell shaped diffuser. A second diffusion zone is fashioned in the form of a multi-duct diffuser part, flow guide rings being arranged downstream of the streamlined struts.

REFERENCES:
patent: 3552877 (1971-01-01), Christ et al.
patent: 4013378 (1977-03-01), Herzog
patent: 4802821 (1989-02-01), Kreitmeier
patent: 5077967 (1992-01-01), Widener et al.
patent: 5102298 (1992-04-01), Kreitmeier
patent: 5203674 (1993-04-01), Vinciguerra
patent: 5221182 (1993-06-01), Arbeus

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