Rotating Electric Machine

摘要

A rotating electric machine includes a cooling frame. The cooling frame includes a flow passage through which the first liquid coolant circulates, a flow inlet connected to one end of the flow passage so as to make the first liquid coolant flow from the outside into the flow passage, and a flow outlet connected to the other end of the flow passage so as to make the first liquid coolant having flown through the flow passage flow to the outside. The machine is configured that, when the flow passage is divided into a front half portion closer to the flow inlet and a latter half portion closer to the flow outlet, the front half portion becomes a portion where the first liquid coolant mainly cools the second liquid coolant, and the latter half portion becomes a portion where the first liquid coolant mainly cools the gas coolant.

主权项

1. A rotating electric machine comprising:
a stator; and a rotor disposed so as to oppose the stator through a gap,wherein:
the stator comprises a stator core and stator coils wound around the stator core; the stator core comprises a plurality of teeth cores projected in the radial direction from an annular yoke core and slots located between the plurality of teeth cores and accommodating the stator coils; the rotor comprises a rotor core rotatably held; the rotating electric machine further comprises a cooling frame that makes a first liquid coolant circulate therethrough and cools the inside of the rotating electric machine, and has a structure of cooling the inside of the rotating electric machine by a second liquid coolant sealed in the inside of the rotating electric machine and a gas coolant sealed in the inside of the rotating electric machine, and cooling the second liquid coolant and the gas coolant by the cooling frame; the cooling frame comprises a flow passage through which the first liquid coolant circulates, a flow inlet connected to one end of the flow passage so as to make the first liquid coolant flow from the outside into the flow passage, and a flow outlet connected to the other end of the flow passage so as to make the first liquid coolant having flown through the flow passage flow to the outside; and the rotating electric machine is configured that the entirety in the length direction of the flow passage is divided into a front half portion closer to the flow inlet and a latter half portion closer to the flow outlet, the front half portion becomes a portion where the first liquid coolant mainly cools the second liquid coolant, and the latter half portion becomes a portion where the first liquid coolant mainly cools the gas coolant.