2results about How to "Avoid pivoting" patented technology

The invention relates to a side-channel compressor for a fuel cell system for compressing a fluid, comprising a housing having a housing upper part and a housing lower part, the housing upper part having a bearing journal extending along a rotational axis, the bearing journal having a housing lower part, and the housing lower part having a bearing journal extending along a rotational axis. The bearing journal has a journal root section and a journal main section, a first bearing and a second bearing are arranged on the journal main section, a compressor wheel assembly having a compressor wheel is arranged in the housing on the bearing outer ring in a rotatable manner about the axis of rotation, and the compressor wheel assembly is arranged in the housing on the bearing outer ring in a rotatable manner about the axis of rotation. According to the invention, the side channel compressor has a journal tensioning section, the journal main section being arranged between the journal root section and the journal tensioning section, and the housing upper part being at least indirectly tensioned with the bearing via a central screw.

The present invention relates to a side-channel compressor (1) for compressing a gaseous medium for a fuel cell system (2), the side-channel compressor having a housing having a first housing component (3) and a second housing component (4), wherein the first housing component (3) has a bearing journal (5) extending along a rotation axis (R), the bearing journal having a journal root section (6) and a journal main section (7), wherein a bearing inner ring (8) of a bearing device (9) is arranged on the journal main section (7), wherein the bearing device (9) has a first bearing (19) and a second bearing (20), wherein a compressor wheel structure assembly (10) is arranged on the bearing outer ring (11) of the bearing device (9) in a manner rotatable about the rotation axis (R). According to the invention, the compressor wheel assembly (10) has an additional cap-shaped sealing element (13) on its end side facing the second housing component (4), particularly on the first end face (30), which at least almost completely covers the bearings (19, 20) and / or the bearing assembly (9) in a manner orthogonal to the axis of rotation (R), wherein the cap-shaped sealing element (13) is at least indirectly connected to the hub (16), thereby enabling fluid encapsulation of the internal space (27) of the hub (16) relative to the environment (29) of the compressor wheel assembly (10). Furthermore, the invention relates to a fuel cell system (2) having a side-channel compressor (1) according to the invention.