Compressor cover with integrated heat shield for an actuator

Patent metadata

Field	Value
Publication number	US-9732767-B2
Application number	US-201514854619-A
Country	US
Kind code	B2
Filing date	Sep 15, 2015
Priority date	Dec 19, 2014
Publication date	Aug 15, 2017
Grant date	Aug 15, 2017

Abstract

The disclosure describes a compressor housing for a turbocharger system. A scroll section of a collecting volute may be defined by a wall of the compressor housing. The scroll section may extend around the axis of the compressor from an inlet of the volute to a scroll discharge stage. A plate section of the compressor housing may extend from the wall in a radial direction outward from the axis and may extend in a circumferential direction around a substantial portion of the collecting volute. The plate section may be configured to shield heat and may advantageously be formed integral with the compressor housing.

First claim

What is claimed is:

1. A compressor housing for a turbocharger system, the compressor housing comprising: an axis to coincide with a rotational axis of a compressor wheel housed by the compressor housing, the axis defining an axial direction coincident with the axis, wherein a radial direction is defined as radiating from the axis and normal to the axis; a scroll section of a collecting volute defined by a wall of the compressor housing, the scroll section extending around the axis from an inlet of the volute to a scroll discharge stage; a plate section extending from the wall in a radial direction outward from the axis and extending in a circumferential direction around a portion of the collecting volute, the plate section configured to shield heat; wherein the plate section is integral with the compressor housing; an actuator mounted to the compressor housing; a link connected to the actuator; wherein the plate section extends in the radial direction a distance so as to shield an entire side of the actuator by the plate section.

2. The compressor housing according to claim 1 wherein the compressor housing and the plate section are cast together as one piece from aluminum.

3. The compressor housing according to claim 1 wherein the scroll discharge stage extends from the scroll section to a discharge port, wherein the discharge port has an edge on a turbine side of the compressor housing and wherein the plate section is located in a direction of the axis in line with the edge.

4. The compressor housing according to claim 1 wherein the compressor housing includes an outer circumference with four equidistantly spaced bosses arranged around the outer circumference, wherein the plate section is integrally formed with at least two of the bosses, and wherein the at least two of the bosses extend radially outward from the outer circumference and join with the plate section.

5. The compressor housing according to claim 1 wherein there are no gaps between the wall and the plate section.

6. The compressor housing according to claim 1 wherein the plate section includes a peripheral edge that extends around the plate section between a first juncture with the wall and a second juncture with the wall, and wherein the plate section exists entirely between the peripheral edge and the wall and wherein the plate section is flat between the peripheral edge and the wall.

7. The compressor housing according to claim 1 wherein the compressor housing includes a mounting flange for attaching the compressor housing to the turbocharger system wherein the plate section is located adjacent the mounting flange in a direction of the axis, but the plate section is separate from the mounting flange.

8. A compressor housing for a turbocharger system, the compressor housing comprising: a housing section that has a central opening to channel intake air into the housing section with a collecting volute formed by the housing section around the central opening, the collecting volute leading to a discharge stage configured to channel the intake air out of the compressor housing, with an outer circumference extending around the collecting volute; a mounting flange extending completely around the outer circumference; and a plate section for heat blocking, the plate section extending from the outer circumference in a radially outward direction, the plate section formed as one piece with the housing section, and the plate section extending only partially around the outer circumference from a first juncture with the housing section to a second juncture with the housing section, the first and second junctures spaced apart a distance that is approximately half-way around the outer circumference, to provide the heat blocking.

9. The compressor housing according to claim 8 wherein an axis extends through a center of the central opening, wherein the outer circumference has an apex that is a most distant part of the collecting volute from the axis, and wherein the plate section joins with the housing section at the apex.

10. The compressor housing according to claim 8 wherein the collecting volute is defined by a wall, and wherein the plate section includes a peripheral edge that extends around the plate section between the first juncture and the second juncture and wherein the plate section exists entirely between the peripheral edge and the wall and wherein the plate section is entirely flat between the peripheral edge and the wall.

11. The compressor housing according to claim 8 wherein the plate section joins with the housing section in a gap free continuity.

12. A turbocharger system comprising: a turbine assembly having a lever for operating a shaft, and having a turbine housing; a central housing connected to the turbine assembly; a compressor housing that has a mounting flange that is connected to the central housing; a compressor wheel in the compressor housing that is rotatable about an axis, with an axial direction defined coincident with the axis; an actuator assembly mounted on the compressor housing, the actuator assembly including an actuator linked by a link to the lever to operate the shaft; and a plate section formed as one piece with the compressor housing, the plate section spaced apart from the mounting flange in the axial direction, the plate section extending from the compressor housing away from the axis in a radial direction, the plate section extending between the actuator assembly and the turbine assembly and so that the plate section extends a distance so as to shield an entire side of the actuator to block heat from the turbine assembly from reaching the actuator assembly, and wherein the plate section joins with the compressor housing in a gap free continuity so that heat from the turbine housing cannot radiate between the plate section and the compressor housing, and the link connected between the actuator and the turbine assembly, wherein the link extends in the axial direction across the plate section.

13. The turbocharger system according to claim 12 wherein the plate section includes an open depression in which a peripheral edge dips toward the axis, the link extending through the open depression.

14. The turbocharger system according to claim 12 wherein the plate section includes a turbine side facing the turbine assembly and a compressor side facing away from the turbine assembly, the link disposed closer to the axis on the turbine side than on the compressor side.

15. The turbocharger system according to claim 12 wherein the actuator includes a profile defined by an outline of the actuator at a distance from the axis, wherein the profile, in its entirety, is positioned behind the plate section and the compressor housing from the turbine assembly.

16. The turbocharger system according to claim 12 wherein the mounting flange completely encircles the axis, and the plate section extends only partially around the axis from a first juncture with the compressor housing to a second juncture with the compressor housing, the first and second junctures spaced apart a distance that is approximately half-way around the axis so that the heat from the turbine housing cannot radiate onto the actuator.

17. The turbocharger system according to claim 16 wherein the compressor housing includes a scroll section that begins at a tongue and wherein the first juncture is disposed approximately radially outside the tongue.

18. The turbocharger system according to claim 17 wherein the plate section joins with the compressor housing in the gap free continuity completely from the first juncture to the second ju

Assignees

• Borgwarner Inc

Inventors

• Cooley Matthew
• Date Aaron

Classifications

• F05D2240/15

  Heat shield · CPC title

• F05D2260/231

  Preventing heat transfer · CPC title

• F05D2220/40

  in turbochargers · CPC title

• F04D29/4206

  especially adapted for elastic fluid pumps · CPC title

• F04D29/5853 Primary

  heat insulation or conduction · CPC title