Compressor scroll and centrifugal compressor
AssigneeMitsubishi Heavy Industries Engine & Turbocharger, Ltd.
InventorsKenichiro IWAKIRI, Isao TOMITA
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Abstract
A compressor scroll (1A) is provided with: a scroll-flow-path formation part (8A) that forms a scroll flow path; and an outlet-flow-path formation part (9) that is connected to a winding-end section (11) of a scroll flow path (8a) and that forms an outlet flow path (9a) extending in a direction tangential to a circle around an axis (O), wherein, at least at the winding-end section (11) in an area where a winding-start section (10) intersects with the winding-end section (11), the scroll-flow-path formation part (8A) is provided with a bulging part (15A) that bulges the scroll flow path in the radial direction toward the side where the winding-start section (10) is present.
Claims20
A compressor scroll comprising:
- a scroll flow path forming portion that forms a scroll flow path extending in a circumferential direction about an axis, having a spiral starting portion and a spiral ending portion intersecting and communicating with each other, and allowing a fluid to flow therein from a diffuser outlet formed on a first side of an axis direction and in a radially inward direction about the axis;
- and
- an outlet flow path forming portion that forms an outlet flow path communicating with the spiral ending portion of the scroll flow path and extending in a tangential direction of a circle about the axis,
- wherein the scroll flow path forming portion includes an expanded portion, which causes the scroll flow path to expand toward the spiral starting portion in the radial direction, at least in the spiral ending portion in a portion where the spiral starting portion and the spiral ending portion intersect each other.
Dependencies are inferred from the claim text.