초록 ▼

An air bleed system for a compressor, particularly for gas turbine engines is provided with an air bleed from a portion of the compressor to an annular chamber through an annular opening in the casing; an annular passage is connected to the opening and terminates in the annular chamber surrounding t

An air bleed system for a compressor, particularly for gas turbine engines is provided with an air bleed from a portion of the compressor to an annular chamber through an annular opening in the casing; an annular passage is connected to the opening and terminates in the annular chamber surrounding the casing; a plurality of turning vanes change the direction of flow of the bleed air by 90°to induce a circulating flow of air in the chamber; flush openings and ducts angle circumferentially in the direction of the circulating flow in the annular chambers supply air to the engine and aircraft accessories.

대표청구항 ▼

An axial flow compressor comprising a rotor and a casing, the rotor having at least one stage of rotor blades, the rotor blades being arranged circumferentially on and extending radially outward from the rotor, the casing surrounding and being spaced from the rotor, the casing having an opening for

An axial flow compressor comprising a rotor and a casing, the rotor having at least one stage of rotor blades, the rotor blades being arranged circumferentially on and extending radially outward from the rotor, the casing surrounding and being spaced from the rotor, the casing having an opening for bleeding air from the radially outermost region of the axial flow compressor in an axial direction, an annular chamber extending circumferentially completely around the casing and defining an unobstructed annular passage, an axially extending passage supplying the bleed air from the opening in the casing to the annular chamber, air turning means being arrange in the axially extending passage, the air turning means being arranged to change the direction of flow of the bleed air, the air turning means being arranged to each direct the bleed in the same circumferential direction whereby a circulating flow of air is formed in the annular chamber to reduce pressure losses in the bleed air, the annular chamber having at least one outlet opening for supplying bleed air through ducting to accessories, the ducting being angled in the direction of flow of the circulating air in the annular chamber.