METHOD OF MANUFACTURING COOLING ELEMENT FOR ROTATING ELECTRICAL MACHINE

Title:

METHOD OF MANUFACTURING COOLING ELEMENT FOR ROTATING ELECTRICAL MACHINE

Document Type and Number:

WIPO Patent Application WO/2022/044647

Kind Code:

A1

Abstract:

Disclosed is a method of manufacturing a cooling element utilized in rotating electrical machines, the manufacturing method comprising: a preparatory step of preparing a plurality of annular collapsible cores each having diametrical crenelations; a stacking step of concentrically stacking the plurality of collapsible cores along the rotational-shaft extension direction of the rotating electrical machine; a casting step of hot-pouring a material for the cooling element into a mold, in a state in which the plurality of collapsible cores are stacked within the mold, so that the material covers the outer peripheral surfaces and the inner peripheral surfaces of each of the plurality of collapsible cores; and a removal step, after the casting step, of removing the plurality of collapsible cores.

Inventors:

IKEDA MASAKI (JP)
OKAZAWA TOSHIHIKO (JP)
MURAKAMI SATOSHI (JP)

Application Number:

PCT/JP2021/027539

Publication Date:

March 03, 2022

Filing Date:

July 26, 2021

Export Citation:

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Assignee:

AISIN CORP (JP)
ART METAL MFG CO LTD (JP)

International Classes:

H02K15/14; B22C9/10; B22C9/24; B22D25/02; H02K1/32; H02K5/06; H02K5/20; H02K9/19

Foreign References:

JP2019115177A	2019-07-11
JP2017135844A	2017-08-03
JP2017108579A	2017-06-15
DE102009047215A1	2011-06-01
DE102009047215A1	2011-06-01

Other References: