Rotorkühlstruktur einer Rotierenden Elektrischen Maschine

Details

Veröffentlichungs-Nr.

EP4815264

Anmeldetag

5. Februar 2026

Veröffentlichung

30. September 2026

Rechtsraum

EP

Abstract

[Problem] To be able to cool an entire rotor in a well-balanced manner by using rotation.[Solution] A rotor cooling structure of a rotary electric machine cools by supplying a coolant to a passage in a specific shape. A shaft has an in-shaft passage, into which the coolant flows from one end thereof. A rotor has a first cooling passage, into which the coolant is introduced from an upstream side thereof, and a second cooling passage, into which the coolant is introduced from a downstream side thereof. The first cooling passage has a first introduction passage extending radially outward from the in-shaft passage and a first main passage communicating with a downstream side thereof and extending in an axial direction. The second cooling passage has a second introduction passage extending radially outward from the in-shaft passage and a second main passage communicating with a downstream side thereof and extending in the axial direction. A first bent portion bent in an direction of forward rotation is provided in the first introduction passage, and a second bent portion bent in a reverse rotation direction is provided in the second introduction passage.

Anmelder

Firma

MAZDA MOTOR CORPORATION

Land

🇯🇵 Japan