EXAMPLE way "Micro Cooling Fan" DETAILED DESCRIPTION OF THE DRAWINGS embodiment of the invention is further described below. Embodiment of the invention shown in Example reference, a new microwave oven brush-less cooling fan motor, the support member includes a motor housing and oil bearing. Supporting the entire motor is used, the connection, further comprising a stator assembly and a rotor assembly, the novel microwave brush-less motor further comprising a cooling fan 3, the stator assembly includes a stator core, the clamp circuit board, and the clamp line package offline , the stator core, the clamp and clamp fixedly mounted down-line center column I of the motor housing, the magnetic energy from the power conversion effect, there are two sets of said line package mounted on and surrounding the stator core, said rotor assembly includes a magnet ring, plastic magnetic stripe and the rotor shaft, complete received by the stator assembly to the rotating magnetic energy into rotational kinetic energy task.