Centrifugal compressor
AssigneeKabushiki Kaisha Toyota Jidoshokki
InventorsRyo UMEYAMA, Yoshiyuki NAKANE
Life of this patent
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Abstract
A centrifugal compressor comprises an impeller including a hub and a plurality of blades. The hub is provided with a through hole. The hub has an external radial surface having an inner external radial surface and an outer external radial surface. The outer external radial surface is formed closer to a back surface than an imaginary curved surface having as a radius a radius of curvature of the inner external radial surface at a radially outer edge thereof.
Claims6
A centrifugal compressor comprising a rotation shaft and an impeller fixed to the rotation shaft and rotating together with the rotation shaft,
- 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 hub being provided with a through hole formed therethrough between the external radial surface and the back surface,
- the external radial surface having
- an inner external radial surface located inwardly of the through hole in a radial direction of the hub and
- an outer external radial surface located outwardly of the through hole in the radial direction of the hub,
- the outer external radial surface being formed closer to the back surface than an imaginary curved surface having as a radius a radius of curvature of the inner external radial surface at an edge thereof outer in the radial direction.
Dependencies are inferred from the claim text.