Hydrodynamic Retarder

Patent metadata

Field	Value
Publication number	US-2016356328-A1
Application number	US-201515117831-A
Country	US
Kind code	A1
Filing date	Jan 29, 2015
Priority date	Feb 10, 2014
Publication date	Dec 8, 2016
Grant date	—

Abstract

A hydrodynamic machine has a vaned primary wheel and a vaned secondary wheel, which together form a toroidal working chamber filled with a working medium to form a hydrodynamic circuit flow for transmission of a drive moment. One of the two vaned wheels is driven by a drive shaft of the hydrodynamic machine via a rotary axis. The machine further has a side channel pump having a pump impeller with a plurality of pump vanes and a channel running in the circumferential direction of the pump impeller. The pump vanes are arranged in the channel such that when the pump impeller rotates, a delivery effect is generated in the channel such that at an inlet end a suction effect and at an outlet end a pressure effect is generated. The pump impeller is radially mounted, axially moveably and/or angularly tilt ably, rotationally fixedly on the drive shaft.

First claim

1 - 10 . (canceled)

11 . A hydrodynamic machine, comprising:
two vaned wheels including a vaned primary wheel and a vaned secondary wheel which together form a toroidal working chamber being filled with a working medium to form therein a hydrodynamic circuit flow for transmission of a drive moment; a drive shaft having a rotary axis for driving at least one of said two vaned wheels; a side channel pump having a pump impeller with a plurality of pump vanes and a channel running in a circumferential direction of said pump impeller, said channel having an inlet end and an outlet end, said pump vanes are disposed in or relative to said channel such that on rotation of said pump impeller, a delivery effect is generated in said channel such that at said inlet end a suction effect and at said outlet end a pressure effect is generated, said inlet end or said outlet end is in working-medium-conductive connection with said toroidal working chamber; and said pump impeller is radially mounted, axially moveably and/or angularly tiltably, rotationally fixedly on said drive shaft.

12 . The hydrodynamic machine according to claim 11 , further comprising a stationary housing surrounding at least said vaned wheel driven by means of said drive shaft, and said pump impeller is axially mounted in said stationary housing.

13 . The hydrodynamic machine according to claim 11 , further comprising a curved-tooth coupling, said pump impeller is mounted on said drive shaft via said curved-tooth coupling.

14 . The hydrodynamic machine according to claim 13 , wherein said curved-tooth coupling has a first gear ring with external toothing and a second gear ring with internal toothing which surround each other in a radial direction so that said internal toothing meshes with said external toothing in a plane running perpendicular to or angled to the rotary axis, wherein one of said first and second gear rings is mounted on or configured integrally with said drive shaft and the other of said first and second gear rings is mounted on or configured integrally with said pump impeller.

15 . The hydrodynamic machine according to claim 14 , wherein said external toothing has teeth with a crowned tooth head.

16 . The hydrodynamic machine according to claim 15 , wherein said internal toothing has tooth gaps with a tooth base which is flat or rectilinear in a direction of the rotary axis.

17 . The hydrodynamic machine according to claim 12 , further comprising at least one slip ring, said pump impeller is sealed against said stationary housing by means of said at least one slip ring in an axial direction.

18 . The hydrodynamic machine according to claim 17 , wherein said slip ring is carried moveably in the axial direction by said pump impeller or said stationary housing.

19 . The hydrodynamic machine according claim 18 , wherein said slip ring is connected rotationally fixedly to said pump impeller or said stationary housing.

20 . The hydrodynamic machine according to claim 18 , wherein at least one of said slip ring or said pump impeller is made of plastic.

21 . The hydrodynamic machine according to claim 11 , wherein the hydrodynamic machine is a hydrodynamic retarder.

22 . The hydrodynamic machine according to claim 13 , wherein said curved-tooth coupling has a first gear ring with external toothing and a second gear ring with internal toothing which surround each other in a radial direction so that said internal toothing meshes with said external toothing in a plane running perpendicular to or angled to the rotary axis, wherein said first gear ring is mounted on or configured integrally with said drive shaft and said second gear ring is mounted on or configured integrally with said pump impeller.

23 . The hydrodynamic machine according claim 18 , wherein said slip ring is connected rotationally fixedly to said pump impeller or said stationary housing by form fit by means of at least one undercut.

Assignees

• Voith Patent Gmbh

Inventors

• Laukemann Dieter

Classifications

• F16H41/24 Primary

  Details · CPC title

• F16D57/04 Primary

  with blades causing a directed flow, e.g. Föttinger type · CPC title

• B60T17/02

  Arrangements of pumps or compressors, or control devices therefor · CPC title

• B60T10/02 Primary

  with hydrodynamic brake · CPC title

• F04D29/24

  Vanes · CPC title