The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 16, 1994
Filed:
Jul. 29, 1993
Franz Kreitmeier, Baden, CH;
Asea Brown Boveri Ltd., Baden, CH;
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.