Compressor

Details Compressor Compressor

F - Mech Eng,Light,Heat,Weapons

04

D

F04D 29/04 (2006.01) F04D 17/12 (2006.01) F04D 25/06 (2006.01) F04D 29/58 (2006.01)

Patent

CA 2144181

A compressor (1) comprises a rotatable shaft (2) driven by an electric motor (7, 23) having a rotor (7) mounted on the shaft (2). The shaft (2) carries at least two impeller rotor stages (4, 5, 6) arranged with the motor positioned intermediately between the impeller rotor stages. An intercooler (15) is connected intermediate the impeller rotor stages (4, 5, 6), and the shaft (2) is support- ed by bearing means (8, 9, 10) comprising at least one tilting pad journal bearing arranged to be self generating and air or gas lubricated, and having bearing pads provided with a ceramics bearing surface. The compressor (1) is extremely efficient and par- ticularly suitable for use in "dry air" applications where it is important to avoid contamination of the working gas, because the bearings are not lubricated with oil. Image

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