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Turbocharger wheel with sound control

A turbocharger, impeller technology, applied in the direction of machine/engine, gas turbine installation, blade support element, etc., can solve the problem of less durable turbine impeller, weakened blade support, undesired, etc.

Inactive Publication Date: 2014-09-03
HONEYWELL INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, increasing the number of blades can lead to several undesirable consequences
For example, an increase in blades can result in a more expensive impeller to manufacture (due to increased material and due to increased tooling costs)
Also, since there is less space at the base of each blade for fillets, blade support is weakened, resulting in a less durable turbine wheel

Method used

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  • Turbocharger wheel with sound control
  • Turbocharger wheel with sound control
  • Turbocharger wheel with sound control

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no. 1 example

[0027] According to a first embodiment of the invention, the turbine blades 111 being part of the rotor set are characterized by a line defining the axis of rotation 103 (ie the axis is collinear with this line). The turbine wheel may include a rotationally symmetric hub 241 (possibly characterized by spherical symmetry about the rotor axis of rotation). A turbine hub supports a plurality of blades. The hub's center of mass ("CM") is on the axis of rotation, and the CMs of the blades are also on the axis of rotation.

[0028] Unlike prior art turbine wheels, the plurality of blades 231 are spaced circumferentially about the hub at varying angles such that the blades are rotationally asymmetric about the axis of rotation 103 . For purposes of this application, it is understood that the term "rotationally asymmetric" is defined to mean that the impellers cannot rotate about the axis of rotation (by any amount other than an integer multiple of 360 degrees) to approximately the s...

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Abstract

The present invention relates to a turbocharger wheel with sound control. The turbocharger turbine wheel includes a hub and a plurality of blades. Both the center of mass of the hub and the center of mass of the plurality of blades are on an axis of rotation. The blades are circumferentially spaced such that they are rotationally asymmetric. Each consecutive pair of blades is characterized by a spacing angle. A line that intersects with and is normal to the axis of rotation defines a plane of symmetry, and the spacing angles are symmetric across the plane of symmetry.

Description

technical field [0001] The present invention relates to a wheel for a turbocharger, and more particularly to an automotive turbocharger wheel having blades spaced at an angle that limits the generation of noise in the audible range. Background technique [0002] Radial automotive turbines are typically configured with an inlet volute in which the exhaust gas flow spirals to drive the blades of the turbine wheel. At locations around the volute where the exhaust gas flow first lets off to the turbine wheel, there are structural features in which the blades rotate from the immediately surrounding volute wall away from the volute wall. This feature is sometimes called the tongue because of its appearance in section. [0003] Automotive turbochargers often have approximately seven to eighteen turbine blades. At lower blade count ranges, and at typical turbine rotation rates, the blades can pass the tongue at frequencies within the human audible range. This produces an undesira...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D5/02F01D5/14
CPCF04D29/666F04D25/024F04D17/10F02C6/12F05D2220/40F01D5/048Y10T29/49236F05D2260/961F04D29/284F01D5/043
Inventor W.J.史密斯A.穆罕默德W.马加尔黑斯
Owner HONEYWELL INT INC
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