A cooling jacket for external rotor generator

The utility model discloses a cooling jacket for external rotor generator belongs to the electric machine cooling device field of sending out, including a coaxial bowl form water jacket inner circle that is fixed in in the generator stator, together the outer water jacket outer lane of generator rotor is located to the axle sleeve, and one is close to the open end setting of water jacket inner circle and connects the water jacket plug on the terminal surface of water jacket outer lane, one along water jacket inner circle open end outer fringe radial outside extend and with the water jacket outer lane in the connecting plate of wall connection, form notch cuttype cooling cavity between water jacket inner circle, water jacket outer lane, connecting plate and the water jacket plug, wherein, be provided with on the water jacket outer lane all with the inlet tube and the outlet pipe of cooling cavity intercommunication. The utility model discloses a set up a water jacket inner circle and a water jacket outer lane and connect cooling cavity of formation with the two, and then cool off through the stator and the rotor of water -cooling to the generator, because between stator and rotor setting and water jacket inner circle and the outer lane, its cooling effect is good, and need not increase the engine generator volume.