IMPELLER FOR CENTRIFUGAL TURBOMACHINE AND CENTRIFUGAL TURBOMACHINE
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United States of America
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Issued Date -
Feb 20, 2020
app pub date -
Oct 11, 2017
filing date -
Oct 11, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
An impeller for a centrifugal turbomachine includes: a hub having a small-diameter portion positioned at a first end portion in an axial direction and a large-diameter portion positioned at a second end portion in the axial direction, the large-diameter portion having a greater diameter than the small-diameter portion; and a blade having a first edge positioned at an axial-directional position of the small-diameter portion and a second edge positioned at an axial-directional position of the large-diameter portion, the blade being disposed on an outer peripheral surface of the hub. The impeller is configured such that, when a first radial-directional cross section is a cross section of the impeller at an axial-directional position passing a tip of the first edge, at least a part of the first radial-directional cross section in a blade-height range of 50% or more is inclined downstream in a rotational direction of the impeller with respect to a radial direction.
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