Laufradrotordichtungsläufer mit Divergierender Leitoberfläche

Details

Veröffentlichungs-Nr.

EP4736981

Anmeldetag

3. November 2025

Veröffentlichung

6. Mai 2026

Rechtsraum

EP

IPC

B01D19/00, F01D11/00

Abstract

An apparatus (20) for an aircraft powerplant includes an impeller rotor (30) and a seal runner (118). The impeller rotor (30) includes a plurality of fluid circuits (106). Each of the fluid circuits (106) includes a first outlet passage (110), a second outlet passage (112) and an inlet passage (108) fluidly coupled to the first outlet passage (110) and the second outlet passage (112) in parallel. The seal runner (118) includes a bore (132), an inner guide surface (144) and an outer land surface (156). The seal runner (118) extends circumferentially about the axis (44) and radially between the inner guide surface (144) and the outer land surface (156). The bore (132) is fluidly coupled to the first outlet passage (110) of each fluid circuit (106). The inner guide surface (144) forms a radial outer peripheral boundary of the bore (132). The inner guide surface (144) radially diverges away from the axis (44) as the inner guide surface (144) extends axially away from the impeller rotor (30) and to a distal end (136) of the seal runner (118).

Anmelder

Firma

PRATT & WHITNEY CANADA CORP.

Land

🇨🇦 Kanada