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Variable inlet for a radial turbine

  • US 4,729,715 A
  • Filed: 07/16/1986
  • Issued: 03/08/1988
  • Est. Priority Date: 07/17/1985
  • Status: Expired due to Fees
First Claim
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1. A turbine apparatus comprising a volute casing having an internal flow passage for receiving and passing a driving medium to a turbine rotor connected to said passage, said passage having at least one inlet and one outlet, said passage being partly defined by at least one movable wall member, the wall member being movable to vary the area of the inlet between a first position in which the inlet area is at a maximum and further positions in which the inlet area is less than the maximum to allow the driving medium to flow over both surfaces of the wall member and to flow onto the surface of a turbine rotor at, at least, two locations angularly displaced with respect to one another when the movable wall member is located at any one of said further positions, said movable wall member having at least one opening defining a fixed area nozzle to allow the passage therethrough of a portion of the driving medium.

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