Nested flange joint

Patent metadata

Field	Value
Publication number	US-10612418-B2
Application number	US-201815928157-A
Country	US
Kind code	B2
Filing date	Mar 22, 2018
Priority date	Mar 22, 2018
Publication date	Apr 7, 2020
Grant date	Apr 7, 2020

Abstract

The present disclosure provides flanged joint or interface between two passageways. The flanged joint includes a first passageway, a connector, and a second passageway. The first passageway may, but not necessarily, be formed via casting process wherein an integrated flange may be defined at the opening of the first passageway such that the integrated flange defines a recess. The connector includes a support body having a fastener region at an upper end of the support body and a flange region at a lower end of the support body. The support body defines an aperture which is configured to support the second passageway. The flange region defined in connector is configured to engage with a recess defined in the first passageway.

First claim

What is claimed is:

1. A nested flanged joint comprising:
a first passageway defining a bore and a recess opened radially inward with respect to the bore, tangentially disposed to the bore, and extending linearly; and
a support body defining an aperture, and configured to support a second passageway, the support body including:
a fastener region defining an angled fastener aperture at an upper end of the support body, wherein the angled fastener aperture is angled with respect to the aperture defined by the support body, and
a flange region extending partially circumferentially with respect to the aperture defined by the support body, projecting radially outward, defined at a lower end of the support body, and disposed in the recess.

2. The nested flanged joint as defined in claim 1 further comprising a mechanical fastener disposed in the angled fastener aperture, and configured to affix the support body and the second passageway to the first passageway while also radially driving the flange region into the recess of the first passageway.

3. The nested flanged joint as defined in claim 2 wherein the recess is v-shaped.

4. The nested flanged joint as defined in claim 3 wherein the flange region has a v-shaped cross-section.

5. A turbocharger assembly for a vehicle comprising:
a turbocharger housing defining a bore, the turbocharger housing including a compressor inlet and a turbine outlet defining a recess, wherein the bore extends between and communicates through the compressor inlet and the turbine outlet, and the recess is open radially inward with respect to the bore;
a journal bearing disposed within the bore;
a rotating assembly having a shaft with a turbine wheel on a first end of the shaft and a compressor wheel on a second end of the shaft, the shaft being supported by the journal bearing for rotation within the bore about a longitudinal axis;
a connector affixed to the turbocharger housing, the connector including a flange region projecting radially outward and disposed in the recess; and
an exhaust pipe coupled to the turbocharger housing via the connector.

6. The turbocharger assembly as defined in claim 5 wherein the recess is defined at a lower region of the turbine outlet.

7. The turbocharger assembly as defined in claim 6 wherein the recess is a v-shaped groove.

8. The turbocharger assembly as defined in claim 7 wherein the flange region of the connector has a v-shaped cross section configured to be at least partially disposed in the v-shaped groove.

9. The turbocharger assembly as defined in claim 8 wherein the recess is formed at the turbine outlet via a casting process.

10. The turbocharger assembly as defined in claim 9 further comprising a gasket disposed between the connector and the turbine outlet.

11. The turbocharger assembly as defined in claim 10 further comprising a gasket and at least one mechanical fastener which is configured to compress the gasket between the connector and the turbine outlet while also driving the flange region into the recess as the at least one mechanical fastener couples the connector and exhaust pipe to the turbocharger housing.

12. The turbocharger assembly as defined in claim 11 wherein the exhaust pipe is welded to the connector.

13. A method for manufacturing a turbocharger assembly comprising the steps of:
providing a turbocharger defining a bore and a recess opened radially inward with respect to the bore;
providing an exhaust pipe and a connector defining an aperture in fluid communication with the bore, the connector having a flange region projecting radially outward with respect to the aperture and a fastener region;
radially inserting the flange region into the recess; and
affixing the connector and the exhaust pipe to the turbocharger housing via at least one mechanical fastener.

14. The method for assembling a turbocharger assembly as defined in claim 13 wherein the flange region of the connector is defined on a lower side of the connector which is opposite to the fastener region.

15. The method for assembling a turbocharger assembly as defined in claim 14 wherein the fastener region is defined at an upper end of the connector.

16. The method for assembling a turbocharger assembly as defined in claim 15 wherein the flange region is defined at a lower end of the connector.

17. The method for assembling a turbocharger assembly as defined in claim 16 wherein the turbocharger housing defines a turbine outlet and the recess is defined at a lower region of the turbine outlet.

18. The method for assembling a turbocharger assembly as defined in claim 17 wherein the at least one mechanical fastener is disposed at an angle relative to the turbine outlet.

19. The method for assembling a turbocharger assembly as defined in claim 18 wherein the recess has a v-shaped cross-section.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Karram Michael A
• Wulbrecht David A

Classifications

• F16L23/02

  the flanges being connected by members tensioned axially (F16L23/12 takes precedence) · CPC title

• F16L23/032

  characterised by the shape or composition of the flanges · CPC title

• F16L43/00

  Bends; Siphons (with cleaning apertures F16L45/00) · CPC title

• F16L23/0286

  the shoulder not being formed from the pipe · CPC title

• F05D2230/21

  by casting · CPC title