Patent ID: 6742989
Filing Date: 2004-06-01
Classification: F01D,F05D

Abstract:
A structure of a turbine scroll used in a radial turbine in which operating gas flows through a vortex-shaped scroll formed inside a turbine casing to turbine blades of a turbine rotor positioned inside said turbine scroll, flowing into said blades in a radial direction to rotate the turbine rotor before flowing out, in the axial direction, wherein said turbine scroll has a scroll width ratio &Dgr;R/B between the width in the radial direction (&Dgr;R) and the width in the direction of the rotation (B) which ranges between 0.3 and 0.7, and wherein said width in the direction of the rotation (B) expands at a fixed rate from the outside circumference of the scroll in the radial direction toward the inside circumference of the scroll.