| 摘要 |
PROBLEM TO BE SOLVED: To reduce weight and size of a pump having a rotor for carrying out pumping action. SOLUTION: The pump is provided with permanent magnets 4, etc., arranged away in a rotating direction from the rotor 3 on an end face crossing a rotation center of the rotor 3 having a plurality of vanes 32, etc., in a circumferential face, a plurality of coils 5, etc., arranged away from the rotor 3 in the rotating direction, position detectors H1 and H2 detecting a rotating position of the rotor 3, a plurality of transistors Tr1-Tr6 connected with the coils 5, etc., and a microprocessor 6 operating the transistors Tr1-Tr6 on the basis of the rotating position detected by the position detectors H1 and H2. The rotor 3 is rotated by controlling an energizing order to the coils 5, etc., and generating a rotating magnetic field for rotating the rotor 3. |
