| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress the heat accumulated not only in a connection part (tongue) of a turbine housing but also in the entire circumference of a shroud by increasing an ambient air exposure surface area of an outer part of the connection part (tongue) to increase heat dissipation from the part, and to thereby achieve cost reduction by reducing the heat resistance grade of a material to be used in the part. <P>SOLUTION: In a scroll structure for a radial turbine configured to rotate and drive a turbine rotor 31 by causing exhaust gas to flow in a radial direction from a spiral scroll part 4 formed in a turbine housing 1 toward a rotor blade 3 of the scroll part 4, and to flow out in an axial direction after acting on the rotor blade 3, a heat dissipating space part is formed in a shroud part 11 between the turbine housing 1 and a turbine chamber in which the rotor blade 3 is disposed. <P>COPYRIGHT: (C)2012,JPO&INPIT |
