Impeller assembly of fluid rotary machine and manufacturing method thereof
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United States of America Patent
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Dec 5, 2017
Issued Date -
N/A
app pub date -
May 13, 2014
filing date -
Aug 7, 2013
priority date (Note) -
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Abstract
Provided is a method of manufacturing an impeller assembly, the method including providing an impeller including: a rotary shaft; a base portion radially extending outward from the rotary shaft; and a plurality of blades extending radially outward from the rotary shaft and disposed on the base portion, each of the plurality of blades provided apart from one another in a circumferential direction around the rotary shaft; providing a mold in an area between the plurality of blades; and forming a shroud covering upper portions of the plurality of blades and an upper portion of the mold, wherein the forming the shroud comprises applying a melted metal on the upper portions of the plurality of blades and the upper portion of the mold.
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