Turbines

Details Turbines Turbines

1987-06-25

1987-12-22

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between runner portion and static part

415175, 415DIG1, F01D 1108

Patent

active

047144068

ABSTRACT:
A turbine provided with at least an annular array of rotary aerofoil blades has a casing, the radially inwardly facing surface of which is provided with a plurality of grooves. The grooves are adjacent the radially outer tips of the aerofoil blades and are so arranged that they direct the gas flow between the blade tips and the casing along the absolute ideal flow path in the region of the blade tips. This ensures that at least some of the momentum of the gases flowing between the blade tips and the casing is transformed into rotating energy as vortices form in the grooves. This energy is subsequently imparted to the tips of the aerofoil blades.

REFERENCES:
patent: 3365172 (1968-01-01), McDonough et al.
patent: 4466772 (1984-08-01), Okapuu et al.

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