ROTATING ELECTRIC MACHINE AND MOTOR UNIT
A rotating electric machine includes: a cylindrical stator core which includes a plurality of slots; a coil which includes a first coil end inserted into the slot and protruding toward one side of the stator core in an axial direction and a second coil end protruding toward the other side in the axial direction; a rotor which is disposed coaxially with the stator core; a shaft which is disposed coaxially with the rotor; and an end wall which is provided at an end side of the shaft and faces the first coil end in the axial direction. The end wall includes a refrigerant outlet which opens in the axial direction so that a refrigerant supplied from the outside is ejected toward the first coil end.
1 . A rotating electric machine comprising:
a cylindrical stator core which includes a plurality of slots;
a coil which includes a first coil end inserted into the slot and protruding toward one side of the stator core in an axial direction and a second coil end protruding toward the other side in the axial direction;
a rotor which is disposed coaxially with the stator core;
a shaft which is disposed coaxially with the rotor; and
an end wall which is provided at an end side of the shaft and faces the first coil end in the axial direction,
wherein the end wall includes a refrigerant outlet which opens in the axial direction so that a refrigerant supplied from the outside is ejected toward the first coil end.
2 . The rotating electric machine according to claim 1 ,
wherein the first coil end protrudes in a convex bent shape toward one side of the stator core in the axial direction.
3 . A motor unit comprising:
two rotating electric machines according to claim 1 , the two rotating electric machines being a first rotating electric machine and a second rotating electric machine disposed coaxially with the first rotating electric machine;
a contact surface in which the end wall of the first rotating electric machine comes into contact with the end wall of the second rotating electric machine in the axial direction; and
a refrigerant supply path which is provided in the contact surface and is connected to the refrigerant outlet so that the refrigerant supplied from the outside circulates.
4 . The motor unit according to claim 3 ,
wherein the refrigerant supply path includes a groove which is formed in a surface of the end wall of at least one of the first rotating electric machine and the second rotating electric machine.
5 . The motor unit according to claim 4 ,
wherein the motor unit is disposed so that the shaft follows a horizontal direction,
wherein the refrigerant outlet is disposed in an upper portion of the motor unit, and
wherein the motor unit comprises a refrigerant storage section which has an accommodation space accommodating the first coil end and is able to store the refrigerant ejected from the refrigerant outlet at a lower portion of the motor unit.