Umkreisungsgehäusebehandlung für Gasturbinenmotoren

Details

Veröffentlichungs-Nr.

EP4717887

Anmeldetag

26. September 2025

Veröffentlichung

1. April 2026

Rechtsraum

EP

Abstract

Centrifugal compressors (300; 400; 500; 600; 700) for gas turbine engines include a casing (402; 506; 604; 702) and a rotor arranged within the casing (402). The rotor includes a hub (306; 402) and blades (304; 504; 602). Each blade (304; 504) extends from an inlet (308; 412; 512) to an outlet (310; 514) of the compressor (300...700). A casing treatment (318; 404; 502; 610; 704; 800) is applied to the casing (402) that includes a set of recirculators (318a,b; 408a,b; 522; 612, 614; 706; 802, 804; 902) that each define a recirculator passage (414a,b; 524; 618; 710) that extends from a passage inlet (416a,b; 526; 616, 622; 708; 806; 904, 906) to a passage outlet (418a,b; 528; 620, 626; 712; 808; 908). A recirculation flow through the recirculators (318a,b...902) is in a recirculation flow direction counter to a main flow direction. An inlet of each recirculator (318a,b...902) is at a position downstream relative to a respective outlet of the same recirculator (318a,b...902) and each inlet and outlet has a dimension in a main flow direction defined based on a relationship relative to a leading edge span of the blades (304; 504; 602).

Anmelder

Firma

PRATT & WHITNEY CANADA CORP.

Land

🇨🇦 Kanada