IMPELLER, PUMP HAVING THE IMPELLER, AND METHOD OF PRODUCING THE IMPELLER
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United States of America
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Dec 9, 2021
app pub date -
Nov 14, 2019
filing date -
Nov 14, 2019
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Abstract
The impeller (1) includes a main plate (3) formed from a metal plate; and vanes (5) each formed from a metal plate. Each of the vanes (5) has a three-dimensional portion (5A) having a surface inclined with respect to a rotation axis (CA) of the impeller (1) and a two-dimensional portion (5B) having a surface parallel to the rotation axis (CA) of the impeller (1), and the two-dimensional portion (5B) is fixed to the main plate (3) by a first weld (10) formed by projection welding.
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