| 摘要 |
PURPOSE: An automatic pump for drainage is provided to reduce the volume and installation space of the pump by installing a pressure sensor inside a controller. CONSTITUTION: An automatic pump for drainage comprises a housing(110), a motor(125), a controller(130), and a pressure sensor(140). The housing is connected to a liquid tank and has an impeller(121). The impeller discharges liquid stored in the liquid tank to the outside. The motor rotates or stops the impeller. The controller is installed in one side of the housing and controls the motor. The pressure sensor is installed inside the controller and is connected to the controller. The pressure sensor senses the liquid level of the liquid tank and transmits the sensed signal to the controller.
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