| 摘要 |
Disclosed are an automatic pump and an operation control method for the same. With the automatic pump and the operation control method for the same, the number of turns in the stator coil of a motor is determined by optionally switching in accordance with changes in the pressure inside the housing of an automatic pump forming a flow pathway for fluid, and thus the rotational speed of the motor is varied to whichever rotational speed is appropriate among pre-set stepped rotational speeds, or is stopped. Consequently costs are curbed and volume is reduced as there is no need for an inverter as is used in automatic pumps of the prior art. |
