| 摘要 |
PURPOSE: A drain pump is provided to install a differential pressure sensor inside a cover, thereby reducing an installation space. CONSTITUTION: A drain pump comprises a case, a motor, an impeller, a control unit(130), a cover(120), and a differential pressure sensor(140). The motor is installed inside the case. The impeller is installed inside the case and rotated by the motor. The control unit is installed on one side of the case, thereby controlling the motor. The cover is joined to the case while surrounding the control unit. The differential pressure sensor is arranged inside the cover and connected to the control unit. The differential pressure sensor senses a water level of a spot where the case is installed, thereby transmitting a measured water level value to the control unit. |
