A compressor system includes: a first compressor including a first casing having a cylindrical shape, and a first bundle capable of being inserted into and pulled out from the first casing in an axial direction of the first casing; and a second compressor including a second casing having a cylindrical shape, and a second bundle capable of being inserted into and pulled out from the second casing in an axial direction of the second casing. The first and second compressors are arranged to face each other to cause pullout directions of the respective bundles to be opposite to each other. A maintenance space shareable for insertion and pullout operations of the first bundle and insertion and pullout operations of the second bundle is interposed between the first bundle and the second bundle, and is available for the bundle under the insertion and pullout operations.

Disclosed is a two-piece shaft assembly for a driven turbocharger with a traction drive. The turbo shaft is attached to a turbine and compressor, and is inserted into a traction barrel that has traction surfaces to mate to the traction drive. In this way, the traction drive can be assembled with only the traction barrel, and the turbo shaft can be inserted through the barrel at the end to simplify assembly.

A bundle guiding device includes an inner roller mounted on a front portion of a bundle in an insertion direction where the bundle is to be inserted into a casing and configured to roll on an inner peripheral surface of the casing, an outer roller mounted on a rear portion of the bundle in the insertion direction where the bundle is to be inserted into the casing and configured to travel on a rail member, and a position adjusting mechanism configured to adjust a position of the bundle in a horizontal direction orthogonal to the insertion direction by applying an adjusting force to a receiving portion, one of the position adjusting mechanism and the receiving portion being on the bundle, and the other of the position adjusting mechanism and the receiving portion being on one of a base surface and the rail member.

The centrifugal compressor can have a shroud engaged to a case via a plurality of circumferentially interspaced slots and lugs, the slots extending in at least one of a radial direction and an axial direction relative to a rotation axis of the compressor, the lugs slidingly received in a corresponding slot and configured for sliding in the slot in response to thermal growth of the case relative to the shroud.

A compressor that includes an impeller, a diffuser and a shroud. The diffuser includes vanes and one or more projections, each of which extends from a top of a vane. The shroud includes one or more holes. The shroud covers the impeller and the diffuser such that each projection protrudes through one of the holes. The shroud is then secured to the projections by an adhesive.

A housing for a turbocharger includes a first outer surface, a second outer surface opposite the first outer surface, and a mounting hole extending between the first outer surface and the second outer surface. The mounting hole includes a first end opposite a second end and a counterbore formed at the first end. The counterbore includes threads that are configured to engage with threads on a shank of a lifting device. The mounting hole also includes a throughbore extending from the counterbore to the second end and configured to receive a fastener for mounting the turbocharger housing. The counterbore forms a first opening through the first outer surface of the turbocharger housing, and the throughbore forms a second opening through the second outer surface of the turbocharger housing. The mounting hole is configured to receive only one fastener or shank at a time.

A vehicle seat comprises a seat bottom having a bottom cushion and a seat back coupled to the seat bottom with the seat back having a back cushion. At least one of the bottom cushion and the back cushion defines a passage. The vehicle seat further comprises a blower assembly coupled to one of the seat bottom and the seat back. The blower assembly comprises a housing and a stator, which is coupled to the housing and comprises a plurality of driving coils. The blower assembly further comprises a rotor rotatably coupled to the housing about a rotational axis, with the rotor comprising a plurality of permanent magnets arranged to generate a flux concentrated on the driving coils. The blower assembly further comprises an impeller coupled to the rotor to rotate about the rotational axis to generate a flow of air through the passage.

The centrifugal turbo-compressor (2) includes a hermetic casing; a drive shaft (6); a first and a second compression stage (12, 13) configured to compress a refrigerant and respectively including a first and a second impeller (18, 19) connected to the drive shaft (6) and being arranged in a back-to-back configuration; an interstage sealing device provided between the first and second impellers (18, 19). The hermetic casing includes a main casing portion (4) in which are arranged the first and second compression stages (12, 13) and the inter-stage sealing device. The first and second compression stage (12, 13) respectively includes a first and a second aerodynamic member (29, 31) each having an annular disc shape and respectively facing front-sides (21, 22) of the first and second impellers (18, 19).

An aspect includes a compressor diffuser and shroud for a motor driven compressor assembly. The motor driven compressor assembly includes a first stage compressor and a second stage compressor. The compressor diffuser and shroud of the second stage compressor includes a diffuser portion and a shroud portion. The diffuser portion includes a diffuser portion outer lip having a first sealing lip outer diameter to provide a first sealing interface to a second stage compressor housing. The shroud portion includes a curvature between the diffuser portion outer lip and a compressor inlet to align with a second stage compressor rotor, where a ratio of the first sealing lip outer diameter to an innermost diameter of the compressor diffuser and shroud is between 2.698 and 2.711.

The turbomachine assembly includes a first turbomachine having an inlet, an outlet and a rotary shaft, a second turbomachine having an inlet, an outlet and a rotary shaft, a transfer duct fluidly connecting the outlet of the first turbomachine to the inlet of the second turbomachine, and a casing housing the turbomachines and the transfer duct; the turbomachines are located adjacent to each other so that the outlet of the second turbomachine is close to the outlet of the first turbomachine and the inlet of the second turbomachine is remote from the outlet of the first turbomachine; the outlet of the second turbomachine has an end portion shaped like a cochlea (i.e. a spiral duct); the transfer duct has an annular shape, and surrounds the end portion of the outlet of the second turbomachine.