Casing of a turbocharger and turbocharger

Patent metadata

Field	Value
Publication number	US-10876428-B2
Application number	US-201916249228-A
Country	US
Kind code	B2
Filing date	Jan 16, 2019
Priority date	Jan 17, 2018
Publication date	Dec 29, 2020
Grant date	Dec 29, 2020

Abstract

A casing of a turbocharger surrounds a housing to be encased at least in sections, with axial casing segments, which follow the housing to be encased axially outside, and with radial casing segments, which follow the housing to be encased radially outside. In the radial casing segments slot-like material recesses are introduced. Two adjacent slot-like material recesses delimit a strap of a respective radial casing segment. In a region of the respective strap, the radial casing segments are exclusively connected to the housing to be encased. Outside the respective strap, the radial casing segments are exclusively connected to the axial casing segments.

First claim

What is claimed is:

1. A casing of a turbocharger, which at least in sections surrounds a housing to be encased, comprising:
axial casing segments that axially follow an outside the housing to be encased;
radial casing segments that radially follow the outside the housing to be encased; and
a strap of a respective radial casing segment delimited by two adjacent slot-like material recesses introduced into the radial casing segments,
wherein the radial casing segments in a region of the respective strap are exclusively connected to the housing to be encased, and
wherein the radial casing segments outside the respective strap are exclusively connected to the axial casing segments.

2. The casing according to claim 1 , wherein each radial casing segment comprise:
a first section extending between the axial casing segments; and
a second section extending adjacent to a respective axial casing segment,
wherein the slot-like material recesses, emanating from the second section, extend into the first section of the respective radial casing segment.

3. The casing according to claim 2 , wherein first fasteners extend through the second section of the respective radial casing segment and connect the radial casing segments to the housing to be encased in the region of the respective strap.

4. The casing according to claim 2 , wherein second fasteners extend through the second section of the respective radial casing segment and connect the radial casing segments outside the respective strap to the respective axial casing segment.

5. The casing according to claim 3 , wherein the respective axial casing segment in a projection of the first fasteners comprises a material recess that is open radially outside.

6. The casing according to claim 2 , wherein the slot-like material recesses have a widened portion in a region of the first section of the respective radial casing segment.

7. The casing according to claim 6 , wherein the widened portion is formed at an end of the slot-like material recess in the region of the first section of the respective radial casing segment.

8. The casing according to claim 6 , wherein the widened portions of such slot-like material recesses, which each delimit a strap, face away from one another.

9. The casing according to claim 7 , wherein the widened portions of such slot-like material recesses, which each delimit a strap, face away from one another.

10. The casing according to claim 1 , wherein the housing to be encased is at least one of a turbine housing, a compressor housing, and a bearing housing of the turbocharger.

11. A connecting element for a casing having:
slot-like material recesses are defined in the connecting element;
wherein two adjacent slot-like material recesses delimit a strap,
wherein the connecting element in a region of a respective strap is exclusively connected to a housing to be encased.

12. A turbocharger, comprising:
a turbine for expanding a first medium;
a compressor for compressing a second medium utilising energy extracted in the turbine during expansion of the first medium;
a turbine housing of the turbine;
a compressor housing of the compressor
a bearing housing arranged between and connected to the turbine housing and the compressor housing; and
a casing surrounding a housing to be encased, which is at least one of the turbine housing, the compressor housing, and the bearing housing, comprising:
axial casing segments that axially follow an outside the housing to be encased;
radial casing segments that radially follow the outside the housing to be encased; and
a strap of a respective radial casing segment delimited by two adjacent slot-like material recesses introduced into the radial casing segments,
wherein the radial casing segments in a region of the respective strap are exclusively connected to the housing to be encased, and

wherein the radial casing segments outside the respective strap are exclusively connected to the axial casing segments.

Assignees

• Man Energy Solutions Se

Inventors

• Weisbrod Tobias
• Uhlenbrock Santiago
• Braun Steffen
• Spatz Urban
• Schmidt Heiko

Classifications

• F04D29/403

  especially adapted for elastic fluid pumps · CPC title

• F02C6/12

  Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure · CPC title

• F01D25/24 Primary

  Casings (modified for heating or cooling F01D25/14); Casing parts, e.g. diaphragms, casing fastenings (casings for rotary machines or engines in general F16M {; special arrangements in stators dealing with breaking-off of part of rotor F01D21/045}) · CPC title

• F05D2260/31

  Retaining bolts or nuts · CPC title

• F05D2220/40

  in turbochargers · CPC title