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US 2022/0018364 A1Published application
Centrifugal compressor
AssigneeKabushiki Kaisha Toyota Jidoshokki
InventorsRyo UMEYAMA, Yoshiyuki NAKANE
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Abstract
A centrifugal compressor comprises a rotation shaft, an impeller, and a casing. The impeller has a hub and a plurality of blades. The casing has an opposite surface facing a back surface of the hub, and a projection projecting from the opposite surface toward the impeller. The hub is provided with an accommodation space that accommodates the projection. The accommodation space includes a through hole penetrating the hub from the back surface toward an external radial surface. The through hole opens while avoiding the blades.
Claims9
A centrifugal compressor comprising:
- a rotation shaft;
- an impeller fixed to the rotation shaft and rotating together with the rotation shaft;
- and
- a casing that accommodates the rotation shaft and the impeller,
- the impeller including
- a hub having an external radial surface having a shape gradually increasing in diameter from one side of the rotation shaft toward the other side of the rotation shaft, and a back surface formed on the other side of the rotation shaft, and
- a plurality of blades provided on the external radial surface of the hub,
- the casing having
- an opposite surface facing the back surface of the hub, and
- a projection projecting from the opposite surface toward the impeller,
- the hub having formed therein an accommodation space overlapping with the projection in a radial direction of the rotation shaft, extending annularly about an axis of the rotation shaft, and accommodating the projection,
- the accommodation space including a through hole (h) penetrating the hub from the back surface toward the external radial surface,
- the through hole opening while avoiding the blades.
10 more elements
Dependencies are inferred from the claim text.