초록 ▼

A turbomachine having variable angle diffuser vanes wed with a centrifugal pump. The performance of a diffuser is greatly enhanced by the use of adjustable angle diffuser vanes which can be set to a wide range of vane angles to provide a variable size of an opening between adjacent vanes. The demons

A turbomachine having variable angle diffuser vanes wed with a centrifugal pump. The performance of a diffuser is greatly enhanced by the use of adjustable angle diffuser vanes which can be set to a wide range of vane angles to provide a variable size of an opening between adjacent vanes. The demonstrated pumping system has a significantly wider operating range than that in conventional pumping systems over a wide flow rate, and is particularly effective in the low flow rate range in which known diffuser vane arrangements would lead to surge in the entire system and other serious operational problems.

대표청구항 ▼

[ We claim:] [1.] A fluid handling pump having a plurality of variable angle diffuser vanes, each of said diffuser vanes being rotatably disposed on a pivoting shaft so as to adjust an angle of said plurality of variable angle diffuser vanes, wherein a length dimension of a diffuser vane is equal to

[ We claim:] [1.] A fluid handling pump having a plurality of variable angle diffuser vanes, each of said diffuser vanes being rotatably disposed on a pivoting shaft so as to adjust an angle of said plurality of variable angle diffuser vanes, wherein a length dimension of a diffuser vane is equal to or not less than a value obtained by dividing a peripheral dimension, determined by a radius at a vane attachment location, by a number of diffuser vanes provided in said pump, and said plurality of variable angle diffuser vanes are arrangeable tangentially around said peripheral length dimension so that a leading edge of one vane overlaps a trailing edge of an adjacent vane.