# US 10,371,169 B2 · Noise reflector for a compressor of a turbomachine

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- Number: US 10,371,169 B2
- Document ID: US10371169B2
- Status: Granted
- Kind: B2
- Application number: 15/105,610
- Filed: 2014-09-30
- Published: 2016-10-27
- Granted: 2019-08-06
- Earliest claimed: 2013-12-17
- Assignees: Daimler AG
- Applicants: Daimler AG
- Inventors: Elias Chebli; Andreas Kliewer; Guillaume Heitz; Simon Sauter; Derek Burny; Paul Loeffler; Helmut Traiser
- Web page: https://patentgrep.com/patent/US10371169B2

## CPC

- F04D 29/663: {Sound attenuation}
- F02B 33/40: of non-positive-displacement type
- F04D 29/4206: {especially adapted for elastic fluid pumps}
- F04D 29/4213: {suction ports}
- F04D 29/624: {especially adapted for elastic fluid pumps}
- F04D 29/665: {by means of resonance chambers or interference}
- F04D 25/024: {the driving means being assisted by a power recovery turbine}
- F05D 2260/36: by a form fit connection, e.g. by interlocking
- F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02)
- F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)
- F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS

## Abstract

A noise reflector for a compressor of a turbomachine, in particular an exhaust gas turbocharger, is provided. The noise reflector includes at least one form-locking element with a direction of longitudinal extension, by way of which the noise reflector can be fastened to a housing part of the compressor such that a form-locking connection is produced, and the direction of longitudinal extension of the form-locking element goes in the axial direction.

## Claims

### Claim 1

A noise reflector for a compressor of a turbomachine comprising:
at least one form-locking element with a direction of longitudinal extension, by way of which the noise reflector can be fastened to a housing part of the compressor such that a form-locking connection is produced, wherein
the direction of longitudinal extension of the form-locking element goes in an axial direction of the noise reflector,
the form-locking element has a longer length in the direction of longitudinal extension of the form-locking element than in a direction of circumferential extension of the form-locking element,
the form-locking element has a convex shape and can be brought into interaction with a corresponding concavely shaped recess of the housing part when producing the form-locking connection,
the noise reflector has at least one further form-locking element with a further direction of longitudinal extension, by way of which the noise reflector can be fastened to the housing part of the compressor such that a further form-locking connection is produced, the further direction of longitudinal extension of the further form-locking element going in a circumferential direction of the noise reflector, and
the further form-locking element has a convex shape and can be brought into interaction with a corresponding concavely shaped further recess of the housing part when producing the further form-locking connection.

### Claim 2 (depends on 1)

The noise reflector according to claim 1, wherein the turbomachine is an exhaust gas turbocharger.

### Claim 3 (depends on 1)

A compressor for a turbomachine comprising a noise reflector according to claim 1.

### Claim 4 (depends on 3)

The compressor according to claim 3, wherein the turbomachine is an exhaust gas turbocharger.