Double flow turbine housing turbocharger

Patent metadata

Field	Value
Publication number	US-9932843-B2
Application number	US-201214119246-A
Country	US
Kind code	B2
Filing date	Jun 8, 2012
Priority date	Jun 10, 2011
Publication date	Apr 3, 2018
Grant date	Apr 3, 2018

Abstract

Implementations of the present disclosure are directed to turbine assemblies for turbocharger systems. In some implementations, turbine housings include a body that defines an inlet for fluid communication with a fluid source, and a wall, the wall dividing the inlet into an inner inlet and an outer inlet, and a fluid guide assembly disposed within the housing, the fluid guide assembly including a plurality of vanes that demarcate an inner volute and an outer volute within the housing, the inner volute being in fluid communication with the inner inlet and the outer volute being in fluid communication with the outer inlet, each vane of the plurality of vanes being fixed at a respective angle relative to a radial direction, the plurality of vanes guiding fluid flow from the outer volute to the inner volute.

First claim

What is claimed is:

1. A turbine housing for a turbocharger, the housing comprising:
a body that defines an inlet for fluid communication with a fluid source, and a wall, the wall dividing the inlet into an inner inlet and an outer inlet; and
a fluid guide assembly disposed within the housing, the fluid guide assembly comprising a plurality of vanes that demarcate an inner volute and an outer volute within the housing, the inner volute being in fluid communication with the inner inlet and the outer volute being in fluid communication with the outer inlet, each vane of the plurality of vanes being radially fixed at a respective angle relative to a turbine wheel within the housing to form respective overlap areas between adjacent vanes, each of the respective overlap areas defining a throat having a length sufficient to inhibit crosstalk between the inner and outer volutes as the plurality of vanes guide fluid flow from the outer volute to the inner volute, respective effective lengths of the plurality of vanes progressively decreasing proportional with a decrease in throat radii such that at least one of the respective overlap areas defining a first throat, corresponding to a first vane, is larger than at least one other overlap area defining a second throat corresponding to a second vane that is smaller than the first vane.

2. The turbine housing of claim 1 , wherein the fluid guide assembly further comprises a guide plate that is secured to the body, the plurality of vanes being secured to the guide plate.

3. The turbine housing of claim 1 , wherein at least one of the vanes is radially fixed at an angle between approximately 30° and approximately 80°.

4. The turbine housing of claim 1 , wherein at least one of the vanes is radially fixed at an angle between approximately 40° and approximately 70°.

5. The turbine housing of claim 1 , wherein at least one of the vanes is radially fixed at an angle between approximately 50° and 60°.

6. The turbine housing of claim 1 , wherein each of the vanes is radially fixed at the same angle.

7. The turbine housing of claim 1 , wherein a first of the vanes is radially fixed at a first angle, and wherein at least one other vane is radially fixed at a second angle that is different from the first angle.

8. The turbine housing of claim 1 , wherein the respective angle of each vane is measured from a radial line that runs through a center point of the turbine wheel and a center point of the vane, and a line that runs through the center point of the vane and a trailing edge of the vane.

9. The turbine housing of claim 1 , wherein the vanes are positioned to provide an angle of incidence of fluid flow relative to the turbine wheel.

10. The turbine housing of claim 9 , wherein the angle of incidence is at most approximately 10°.

11. The turbine housing of claim 1 , further comprising a valve assembly for regulating fluid communication between the outer inlet and the outer volute, the valve assembly comprising a gate that is movable between a fully closed position to inhibit fluid flow through the outer inlet, and a fully opened position to enable fluid flow through the outer inlet.

12. A turbocharger, comprising:
a turbine housing comprising:
a body that defines an inlet for fluid communication with a fluid source, and a wall, the wall dividing the inlet into an inner inlet and an outer inlet; and
a fluid guide assembly disposed within the housing, the fluid guide assembly comprising a plurality of vanes that demarcate an inner volute and an outer volute within the housing, the inner volute being in fluid communication with the inner inlet and the outer volute being in fluid communication with the outer inlet, each vane of the plurality of vanes being radially fixed at a respective angle relative to a turbine wheel within the housing to form respective overlap areas between adjacent vanes, each of the respective overlap areas defining a throat having a length sufficient to inhibit crosstalk between the inner and outer volutes as the plurality of vanes guide fluid flow from the outer volute to the inner volute, respective effective lengths of the plurality of vanes progressively decreasing proportional with a decrease in throat radii such that at least one of the respective overlap areas defining a first throat, corresponding to a first vane, is larger than at least one other overlap area defining a second throat corresponding to a second vane that is smaller than the first vane.

13. The turbocharger of claim 12 , wherein the fluid guide assembly further comprises a guide plate that is secured to the body, the plurality of vanes being secured to the guide plate.

14. The turbocharger of claim 12 , wherein at least one of the vanes is radially fixed at an angle between approximately 30° and approximately 80°.

15. The turbocharger of claim 12 , wherein at least one of the vanes is radially fixed at an angle between approximately 40° and approximately 70°.

16. The turbocharger of claim 12 , wherein at least one of the vanes is radially fixed at an angle between approximately 50° and 60°.

17. The turbocharger of claim 12 , wherein each of the vanes is radially fixed at the same angle.

18. A method of manufacturing a turbine housing for a turbocharger, the method comprising:
forming a body, the body defining an inlet for fluid communication with a fluid source, and a wall, the wall dividing the inlet into an inner inlet and an outer inlet;
assembling a fluid guide assembly, the fluid guide assembly comprising a plurality of vanes; and
securing the fluid guide assembly within the body such that the plurality of vanes demarcate an inner volute and an outer volute within the housing, the inner volute being in fluid communication with the inner inlet, and the outer volute being in fluid communication with the outer inlet, each vane of the plurality of vanes being radially fixed at a respective angle relative to a turbine wheel within the housing to form respective overlap areas between adjacent vanes, each of the respective overlap areas defining a throat having a length sufficient to inhibit crosstalk between the inner and outer volutes as the plurality of vanes guide fluid flow from the outer volute to the inner volute, respective effective lengths of the plurality of vanes progressively decreasing proportional with a decrease in throat radii such that at least one of the respective overlap areas defining a first throat, corresponding to a first vane, is larger than at least one other overlap area defining a second throat corresponding to a second vane that is smaller than the first vane.

Assignees

• Narehood Abraham C
• Alajbegovic Vahidin
• Watson John P
• Borgwarner Inc

Inventors

• Narehood Abraham C
• Alajbegovic Vahidin
• Watson John P

Classifications

• F02B37/025

  Multiple scrolls or multiple gas passages guiding the gas to the pump drive · CPC title

• Y10T29/4932

  Turbomachine making · CPC title

• F01D9/041 Primary

  using blades (F01D5/148 takes precedence) · CPC title

• F02B37/24

  by using pumps or turbines with adjustable guide vanes · CPC title

• F01D9/026 Primary

  Scrolls for radial machines or engines · CPC title