Patent ID: 6705834
Filing Date: 2004-03-16
Classification: F01D,F05D

Abstract:
An axial flow turbine type rotor machine for elastic fluid operation, comprising:a rotor having at least one axially spaced section, wherein each rotor section comprises a circumferential array of radially extending drive blades, a stator having at least two axially spaced sections, wherein each stator section comprises a circumferential array of radially extending guide vanes, and each one of said stator sections is located on opposite sides of a respective one of said at least one rotor section, wherein a rotor section flow path is formed between every two adjacent drive blades in each rotor section, and said each rotor flow path has a certain length, a rotor section entrance region, and a rotor section exit region, wherein a stator section flow path is formed between every two adjacent guide vanes in each said stator section, and said each stator flow path has a certain length, a stator section entrance region, and a stator section exit region, wherein in each said rotor section flow path said rotor section entrance region has a larger cross sectional area than said rotor section exit region, and in each said stator section flow path said stator section entrance region has a larger cross sectional area than said stator section exit region, wherein each said stator section flow path has a substantially constant cross sectional area downstream from said rotor section entrance region over at least 60% of said stator section flow path length, and wherein each said rotor section flow path has a substantially constant cross sectional area downstream from said rotor section entrance region over at least 60% of said rotor section flow path length.