| 摘要 |
PURPOSE: An automatic pump is provided to reduce the volume of the pump by inserting a pressure tank into the inside a housing. CONSTITUTION: An automatic pump comprises a motor(120), an impeller(130), and a pressure tank(140). The motor comprises a case(121) installed inside a housing(110). The impeller is installed on one inner surface of the housing and is rotated by the rotary shaft(124) of the motor. The impeller forcefully sends liquid flowing to one surface of the housing to a gap between the housing and the case and discharges the liquid to the other surface of the housing. The pressure tank is installed between the housing and the case and absorbs or corrects the pressure of the liquid between the housing and the case.
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