Speed increaser and centrifugal compressor
AssigneeKabushiki Kaisha Toyota Jidoshokki
InventorsRyosuke Fukuyama, Kaho Takeuchi
Life of this patent
Estimating the term…
Abstract
A speed increaser includes a high-speed shaft, an annular peripheral wall surrounding the high-speed shaft and rotatable with a rotation of a low-speed shaft, the peripheral wall having an inner peripheral surface and a projection extending inwardly from the inner peripheral surface in a radial direction of the high-speed shaft, and a roller disposed between the high-speed shaft and the peripheral wall and having an outer peripheral surface that is in contact with both the projection and an outer peripheral surface of the high-speed shaft. A centrifugal compressor includes the speed increaser, an electric motor driving to rotate the low-speed shaft, and an impeller mounted to the high-speed shaft.
Claims7
A speed increaser comprising:
- a high-speed shaft;
- an annular peripheral wall surrounding the high-speed shaft and rotatable with a rotation of a low-speed shaft, the peripheral wall having an inner peripheral surface and a projection extending inwardly from the inner peripheral surface in a radial direction of the high-speed shaft;
- and
- a roller disposed between the high-speed shaft and the peripheral wall and having an outer peripheral surface that is in contact with both the projection and an outer peripheral surface of the high-speed shaft,
- wherein the projection has an arc shape on opposite ends in an axial direction in a contact area where the projection is in contact with the roller when a cross-section of the projection is taken in a plane perpendicular to the circumferential direction of the peripheral wall,
- wherein the projection has an annular shape extending in a circumferential direction of the peripheral wall, and
- wherein the projection has a semicircular shape when the projection is taken in a plane perpendicular to the circumferential direction of the peripheral wall.
A centrifugal compressor comprising:
- a low-speed shaft;
- an electric motor driving to rotate the low-speed shaft;
- a speed increaser including a high-speed shaft, and an annular peripheral wall surrounding the high-speed shaft and rotatable with a rotation of the low-speed shaft, the peripheral wall having an inner peripheral surface and a projection extending inwardly from the inner peripheral surface in a radial direction of the high-speed shaft, and a roller disposed between the high-speed shaft and the peripheral wall and having an outer peripheral surface that is in contact with both the projection and an outer peripheral surface of the high-speed shaft, wherein
- the projection has an arc shape on opposite ends in an axial direction in a contact area where the projection is in contact with the roller when a cross-section of the projection is taken in a plane perpendicular to the circumferential direction of the peripheral wall;
- an impeller mounted to the high-speed shaft,
- the projection has an annular shape extending in a circumferential direction of the peripheral wall, and
- the projection has a semicircular shape when the projection is taken in a plane perpendicular to the circumferential direction of the peripheral wall.
Dependencies are inferred from the claim text.