OIL CIRCULATION STRUCTURE OF EXTERNAL PUMP

摘要

An oil circulation structure of an external pump motor is provided to prevent generation of cavitations by circulating oil by a circulation line formed in a rotor so as to improve cooling performance. An oil circulation structure of an external pump motor comprises a motor unit, a transfer chamber, a first circulation line(R10) and a thermoelectric element. The motor unit transfers rotation force through a rotation shaft(121) mounted on the rotor(R) rotated inside a stator. The transfer chamber receives the rotation force from the rotation shaft of the motor, and transfers LPG fuel. The first circulation line is pierced into the inside of a rotator in straight line shape, and maintains equal radius direction distance in inclined shape. The thermoelectric element is installed in a surface of the motor unit.