Patent ID: 7371047
Filing Date: 2008-05-13
Classification: F01D,F05D

Abstract:
1. An exhaust gas turbine ( 10 ) for a turbocharger comprising a spiral housing ( 11 ) consisting of sheet metal and surrounding a turbine inlet duct ( 30 ), with an adjustable guide vane structure ( 30 a ) disposed in the inlet duct ( 30 ) and also forming an inlet funnel ( 41 ) which extends tangentially, an outer shell ( 21 ) of sheet metal surrounding the spiral housing ( 11 ) in spaced relationship so as to form an air gap ( 22 ) therebetween, the spiral housing ( 11 ) and the outer shell ( 21 ) being pot-shaped and having open end sections adjacent the flow guide structure ( 13 , 17 ) which are connected to the flow guide structure ( 13 , 17 ), the end sections of the spiral housing ( 11 ) being connected to said flow guide structure ( 13 , 17 ) by means of an axially resilient element comprising one of a corrugated part ( 42 ) of the spiral housing ( 11 ) and a sliding seat ( 32 ) between a part of the flow guide structure ( 13 , 17 ,) and the spiral housing ( 11 ) so as to permit axial and radial expansion of the spiral housing ( 11 ) without exerting stresses on the. adjacent parts of the flow guide structure ( 13 , 17 ) and without detrimentally affecting the adjustable guide vane structure ( 30 a ) disposed in the turbine inlet duct ( 30 ).