Bearing device, compressor and method for producing such a bearing device

Patent metadata

Field	Value
Publication number	US-11187264-B2
Application number	US-201716326550-A
Country	US
Kind code	B2
Filing date	Jul 27, 2017
Priority date	Aug 19, 2016
Publication date	Nov 30, 2021
Grant date	Nov 30, 2021

Abstract

A bearing device, a compressor and a method, in which a first radial bearing element is measured in at least the radial direction, an axial distance of the first axial bearing element from the first radial bearing element being measured, the second radial bearing element being measured in at least the radial direction, the first radial bearing element being positioned with respect to the second radial bearing element as a function of the predefined first width of the radial gap, the adjustment arrangement being situated in such a way that the axial gap has the predefined second width.

First claim

What is claimed is:

1. A bearing device for a compressor system having a compressor, comprising:
a fluid-dynamic radial bearing;
a fluid-dynamic axial bearing; and
an adjustment arrangement;
wherein the radial bearing includes a first radial bearing element and a second radial bearing element,
wherein the axial bearing includes at least a first axial bearing element and a second axial bearing element,
wherein the adjustment arrangement is connected to the second axial bearing element,
wherein the first radial bearing element and the first axial bearing element are coupled to each other in a torque-locked manner and are rotatable about an axis of rotation,
wherein the second radial bearing element and the second axial bearing element are connected to each other in a torque-locked manner and are rotatably fixed,
wherein an axial gap extends in the axial direction between the first axial bearing element and the adjustment arrangement,
wherein a radial gap has a predefined width in the radial direction being situated between the first radial bearing element and the second radial bearing element,
wherein the first radial bearing element and the second radial bearing element are configured at least in sections in a conically corresponding manner with respect to each other,
wherein a gap width of the axial gap is adjustable to a predefined value using the adjustment arrangement,
wherein the bearing device is configured to support a shaft of the compressor,
wherein the adjustment arrangement is configured in a disk-shaped manner, and has a stack of spacers, wherein the adjustment arrangement has a thickness in an axial direction and is connected to the second axial bearing element, and
wherein an eccentric position, with respect to a bearing axis of second radial bearing element, of the first radial bearing element with respect to the axis of rotation is limited by the predefined width of the radial gap.

2. The bearing device of claim 1 , wherein the second axial bearing element is situated on a side facing the radial bearing.

3. The bearing device of claim 1 , wherein the first axial bearing element and/or the second axial bearing element is situated to run perpendicularly to the axis of rotation.

4. The bearing device of claim 1 , wherein the first radial bearing element has a first radial bearing surface and/or the second radial bearing element has a second radial bearing surface, wherein the first and/or the second radial bearing surface encloses an angle having a value with respect to the axis of rotation, and wherein the value lies in a range from 0.1° to 0.3°.

5. The bearing device of claim 1 , wherein the axial bearing includes a third axial bearing element, wherein:
the third axial bearing element is rotatably fixed,
the third axial bearing element is situated on a side of the first axial bearing element facing away from the radial bearing,
another adjustment arrangement is situated between the third axial bearing element and the first axial bearing element,
a second axial gap is between the additional adjustment arrangement and the first axial bearing element, and
the additional adjustment arrangement is configured so that a further gap width of the additional axial gap is adjustable to a predefined further value.

6. The bearing device of claim 5 , wherein the value of the gap width and the value of the additional gap width are the same.

7. The bearing device of claim 5 , wherein the value of the gap width is greater than the value of the additional gap width.

8. The bearing device of claim 5 , wherein the value of the gap width is smaller than the value of the additional gap width.

9. The bearing device of claim 1 , wherein the first radial bearing element has a first radial bearing surface and/or the second radial bearing element has a second radial bearing surface, wherein the first and/or the second radial bearing surface encloses an angle having a value with respect to the axis of rotation, and wherein the value lies in a range from 0.1° to 0.15°.

Assignees

• Bosch Gmbh Robert

Inventors

• Giesselmann Nils

Classifications

• F16C17/10 Primary

  for both radial and axial load · CPC title

• F16C17/105

  with at least one bearing surface providing angular contact, e.g. conical or spherical bearing surfaces · CPC title

• F04D29/624

  especially adapted for elastic fluid pumps · CPC title

• F04D29/057

  hydrostatic; hydrodynamic · CPC title

• F04D29/0513

  hydrostatic; hydrodynamic thrust bearings · CPC title