초록

A compressor casing includes an axially convex inner surface for surrounding a row of rotor blades with radial gaps therebetween. The tip of the blades complement the casing contour for reducing blade tip losses and flow blockage.

대표청구항 ▼

1. A compressor casing comprising an inner surface extending axially for surrounding a row of rotor blades from leading to trailing edges thereof with radial gaps between tips of said blades and said inner surface, and said inner surface including:an axially convex aft portion for surrounding said b

1. A compressor casing comprising an inner surface extending axially for surrounding a row of rotor blades from leading to trailing edges thereof with radial gaps between tips of said blades and said inner surface, and said inner surface including:an axially convex aft portion for surrounding said blade tips at said trailing edges; a larger diameter forward portion disposed upstream of said aft portion for surrounding said blade tips at said leading edges; and said forward portion converges axially aft for surrounding mouths of passages between said blades, with each of said mouths extending axially from a pressure side at a leading edge of one of said blades generally perpendicularly to a corresponding portion on a suction side of a next adjacent blade aft from the leading edge thereof.