Title:
ROTOR SHAFT
Document Type and Number:
WIPO Patent Application WO/2024/013982
Kind Code:
A1
Abstract:
An ebullient cooling type rotor shaft according to the present invention is inserted through the axial center of a rotor core, is supported by two bearings, and rotates integrally with the rotor core. It is also possible to provide the ebullient cooling type rotor shaft having stable and high cooling performance that has a sealed space filled with refrigerant extending from the insertion part surrounded by the rotor core to the shaft end part outside the rotor core. The inner diameter of the sealed space is larger at the insertion part than at the shaft end part, with a lattice structure formed in the entire sealed space. The refrigerant is cooled and condensed by a cooling unit formed at least at one of the shaft end parts, and it is therefore possible to separate the condensation point and the boiling point of the refrigerant.
Inventors:
HIROSE YOZO (JP)
Application Number:
PCT/JP2022/027856
Publication Date:
January 18, 2024
Filing Date:
July 15, 2022
Export Citation:
Assignee:
NISSAN MOTOR (JP)
International Classes:
H02K9/20; H02K9/22
Foreign References:
| JP2016102616A | 2016-06-02 | |||
| JPS58103573U | 1983-07-14 | |||
| US5629573A | 1997-05-13 |
Attorney, Agent or Firm:
MATOBA, Motonori (JP)
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