Twin flow turbine housing

Abstract

A twin flow turbine housing for two intake channels ( 13 a , 14 a ) separated from one another in terms of fluid technology and intended for a fluid which is to be fed under pressure to a turbine, for example of a turbocharger, consists of two substantially symmetrical half-shells ( 13, 14 ) which between them enclose a substantially flat partition ( 18 ). The two half-shells ( 13, 14 ) and the partition ( 18 ) consist of sheet metal and are welded to one another. The outer contours of the half-shells have bent-over edges ( 20, 20 ′) and notches ( 30 ′) which are engaged by extensions ( 30 ) of the partition ( 18 ), the extensions ( 30 ) projecting outwards through the notches ( 30 ′) to enable them, after assembly of the half-shells, to be welded to the edges thereof. This manufacturing technology can be used for uncontrolled turbochargers and also for turbochargers controlled by a bypass.

1 . A twin flow turbine housing ( 1 ) comprising two intake channels ( 13   a ,  14   a ) separated in terms of fluid technology and adapted for a fluid under pressure which is to be fed to a turbine wheel, wherein the twin flow turbine housing ( 1 ) is formed from two half-shells ( 13 ,  14 ) which are substantially symmetrical relative to one another and between them enclose a partition ( 18 ).  
   
   
       2 . The twin flow turbine housing according to  claim 1 , wherein the two half-shells ( 13 ,  24 ) comprise sheet metal.  
   
   
       3 . The twin flow turbine housing according to  claim 1 , wherein the partition ( 18 ) comprises sheet metal.  
   
   
       4 . The twin flow turbine housing according to  claim 1 , wherein the two half-shells ( 13 ,  14 ) and optionally the partition ( 18 ) are welded to one another.  
   
   
       5 . The twin flow turbine housing according to  claim 1 , wherein the partition ( 18 ) and the half-shells ( 13 ,  14 ) have outer contours ( 13 ′,  14 ′,  18 ′) adapted to one another.  
   
   
       6 . The twin flow turbine housing according to  claim 5 , wherein the outer contours ( 13 ′,  14 ′) of the half-shells have notches ( 30 ′), and the outer contour ( 18 ′) of the partition ( 18 ) has extensions ( 30 ) which, on assembly of the half-shells with the partition, come to rest in the notches ( 30 ′) and are welded to one another in this state.  
   
   
       7 . The twin flow turbine housing according to  claim 1 , wherein the outer contours ( 13 ′,  14 ′) of the half-shells have bent-over edges ( 20 ,  20 ′) which lie in the separation plane (A) and are welded to one another.  
   
   
       8 . The twin flow turbine housing according to  claim 1 , wherein the half-shells have circular inner contours on which bent-over edges ( 31 ) lying in the separation plane (A) are formed, which edges can be connected in the same way as the outer contours by means of notches ( 30 ) and extensions ( 30 ) and welding.  
   
   
       9 . The twin flow turbine housing according to  claim 1 , wherein the two intake channels ( 13   a ,  14   a ) have bypass orifices ( 17 ,  17 ′) leading to a bypass line ( 22 ), and in that this bypass line ( 22 ) is divided into two part-bypasses by an extension ( 18 ′) of the partition ( 18 ).