Using this cooling method is mainly used in well shielded submersible motor stator. The motor is an independent sealing cavity, the stator core and winding is encapsulated, filled with epoxy resin or plastic filler, the rotor cavity filled with water. The stator iron loss and stator winding resistance of the heat generated by the direct loss through the stator core or cavity filling, the shell pass through the surface of the casing wells away. The rotor winding resistance loss and the heat generated by the rotor iron loss, in part through the air gap and water shield directly to the stator, the stator to the motor outside the water away, another part to the rotor filled with water, this part of the heat and mechanical loss of heat generated by cavity filling water together, pass to the stator core, the casing and the bearing seat, and finally through the motor casing and bearing seat And other parts of the surface designed to take away the water outside the motor.
