| 摘要 |
PROBLEM TO BE SOLVED: To provide a simply-constituted electric pump provided with the function of preventing a loss of synchronization with reliability and provide a fluid-feeding device provided with the electric pump. SOLUTION: The electric pump drives a rotor 4 housed in a pump body 1 by a sensorless-brushless motor in order to discharge a fluid, which is drawn in from a suction port 2 provided to the pump body 1, from a discharge port 3. Then the electric pump is provided with the function D of preventing the loss of synchronization of the sensorless-brushless motor. The sensorless-brushless motor refluxes part of the fluid discharged from the discharge port 3 to the suction port 2, or discharges part of the fluid outside of the pump body 1 so that the fluid pressure of the discharge port 3 does not exceed a preset pressure. Then the fluid-feeding device is provided with the electric pump. COPYRIGHT: (C)2006,JPO&NCIPI
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