Bearing arrangement for a drive shaft of a turbo-machine, and a turbo-machine including such a bearing arrangement
AssigneesRobert Bosch GmbH, Danfoss Commercial Compressors
InventorsClement Martignago, Patrice Bonnefoi, Stan Vandesteene, Yves Rosson
Life of this patent
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Abstract
The bearing arrangement includes a one-piece gas bearing sleeve (32) configured to rotatably support the drive shaft (4) and made in molybdenum or in a molybdenum alloy, the one-piece gas bearing sleeve (32) including a radial bearing surface (33) configured to Surround the drive shaft (4).
Claims16
A bearing arrangement for a drive shaft (4) of a turbo-machine (2), the bearing arrangement including a radial gas bearing (32) configured to rotatably support the drive shaft (4), the radial gas bearing (32) including a gas bearing sleeve (32.1) having a radial bearing surface (33) configured to surround the drive shaft (4), characterized in that the gas bearing sleeve (32.1) is made of molybdenum or of a molybdenum alloy,
- wherein the radial gas bearing (32) includes a cooling part (35) configured to dissipate heat from the radial gas bearing (32), and
- wherein the bearing arrangement further includes:
- an axial bearing surface (34) extending substantially perpendicularly to the radial bearing surface (33) and being configured to cooperate with a radial thrust bearing member (8) of the drive shaft (4), and
- an axial bearing plate (39) having an annular disc shape, the axial bearing plate (39) including the axial bearing surface (34) and having an abutment surface (41) opposite to the axial bearing surface (34) and abutting against the radial gas bearing (32).
A bearing arrangement for a drive shaft (4) of a turbo-machine (2), the bearing arrangement including a radial gas bearing (32) configured to rotatably support the drive shaft (4), the radial gas bearing (32) including a gas bearing sleeve (32.1) having a radial bearing surface (33) configured to surround the drive shaft (4), characterized in that the gas bearing sleeve (32.1) is made of molybdenum or of a molybdenum alloy,
- wherein the radial gas bearing (32) includes a cooling part (35) having a plurality of annular cooling ribs (36) on an outer circumference of the radial gas bearing (32), the plurality of annular cooling ribs (36) configured to dissipate heat from the radial gas bearing (32),
- wherein an axial bearing plate (39) having an annular disc shape forms an axial bearing surface (34), and
- wherein the axial bearing plate (39) includes an abutment surface (41) opposite to the axial bearing surface (34), the abutment surface (41) abutting against a first end of the radial gas bearing (32).
Dependencies are inferred from the claim text.