A ventilation fan includes a shaft, a rotor, a motor housing, a bearing housing, and an air bearing. The shaft has a shaft body that extends between a first shaft end and a second shaft end. The shaft body defines a first port and a bore. The rotor is disposed about the shaft. The motor housing is disposed about the shaft and is axially spaced apart from the rotor. The bearing housing is disposed about the shaft. The air bearing is disposed proximate the second shaft end and is disposed between the bearing arm and the second shaft end.

The present embodiment comprises: a rotary shaft; a rotor mounted on the rotary shaft; a stator for encompassing the outer circumference of the rotor; an impeller mounted on the rotary shaft so as to be spaced from the rotor; a bearing housing having a through-hole through which the rotary shaft passes; a rolling bearing disposed in the bearing housing and coupled to the rotary shaft; and a gas bearing disposed in the bearing housing so as to be spaced from the rolling bearing in an axial direction, and facing the outer circumference of the rotary shaft.

The present embodiment comprises: a rotary shaft; a rotor mounted on the rotary shaft; a stator for encompassing the outer circumference of the rotor; an impeller mounted on the rotary shaft so as to be spaced from the rotor; a bearing housing having a through-hole through which the rotary shaft passes; a rolling bearing disposed in the bearing housing and coupled to the rotary shaft; and a gas bearing disposed in the bearing housing so as to be spaced from the rolling bearing in an axial direction, and facing the outer circumference of the rotary shaft.

The present disclosure relates to a centrifugal compressor and air conditioning equipment. The centrifugal compressor includes: a main shaft; a diffuser, provided with a first thrust bearing at one end away from a diffusion surface; a supporting assembly, provided with a second thrust bearing at one end facing towards the diffuser; and a thrust disk, configured to rotate together with the main shaft, located between the diffuser and the supporting assembly along an axial direction and provided with a thrust portion, a clearance between one side of the thrust portion and the first thrust bearing and a clearance between the other side of the thrust portion and the second thrust bearing being limited through mutual abutting of the diffuser and the supporting assembly.

An integrated bearing assembly includes a thrust bearing disposed along a face of a turbocharger casing in a turbocharger and extending circumferentially around an axis of rotation of a rotor of the turbocharger, and a dual film journal bearing radially disposed between the rotor and the turbocharger casing which can be semi-floating or fully floating. The journal bearing includes a shoulder step radially extending away from the rotor. The shoulder step of the journal bearing engages one or more of the thrust bearing or the turbocharger casing to prevent axial movement of the dual film journal bearing relative to the turbocharger casing.

An integrated bearing assembly includes a thrust bearing disposed along a face of a turbocharger casing in a turbocharger and extending circumferentially around an axis of rotation of a rotor of the turbocharger, and a dual film journal bearing radially disposed between the rotor and the turbocharger casing which can be semi-floating or fully floating. The journal bearing includes a shoulder step radially extending away from the rotor. The shoulder step of the journal bearing engages one or more of the thrust bearing or the turbocharger casing to prevent axial movement of the dual film journal bearing relative to the turbocharger casing.

The invention relates to a turbo compressor (10), in particular for a fuel cell system (1). The turbo compressor (10) has a first compressor unit (101) and a second compressor unit (102). The first compressor unit (101) comprises a first compressor (11) arranged on a first shaft (14) drivable by a drive unit (20). The second compressor unit (102) comprises a second compressor (12) and an exhaust gas turbine (13). The second compressor (12) and the exhaust gas turbine (13) are arranged on a second shaft (24).

The invention relates to a turbo compressor (10), in particular for a fuel cell system (1). The turbo compressor (10) has a first compressor unit (101) and a second compressor unit (102). The first compressor unit (101) comprises a first compressor (11) arranged on a first shaft (14) drivable by a drive unit (20). The second compressor unit (102) comprises a second compressor (12) and an exhaust gas turbine (13). The second compressor (12) and the exhaust gas turbine (13) are arranged on a second shaft (24).

A fan blade assembly using air bearing features to reduce frictional losses, reduce physical wear and tear, and allow for faster acceleration of the fan blade within the assembly is disclosed. A fan blade housing incorporates inlets for pressurized air which create a pressurized area between the fan blade and the housing. The pressurized area functions as an air bearing interface and the fan blade is kept at a controlled distance from the fan blade housing as it spins. In an alternate embodiment, the fan blade assembly has pass-through inlets which use air pressure generated by the fan itself as it spins to provide the pressurized air for the pressurized area.

A fan blade assembly using air bearing features to reduce frictional losses, reduce physical wear and tear, and allow for faster acceleration of the fan blade within the assembly is disclosed. A fan blade housing incorporates inlets for pressurized air which create a pressurized area between the fan blade and the housing. The pressurized area functions as an air bearing interface and the fan blade is kept at a controlled distance from the fan blade housing as it spins. In an alternate embodiment, the fan blade assembly has pass-through inlets which use air pressure generated by the fan itself as it spins to provide the pressurized air for the pressurized area.