| 摘要 |
<p>PURPOSE:To provide a centrifugal pump which discharges dehumidified water for an air conditioner and which is constituted to reduce the generation of noise, reduce the generation of vibration, and increase a lift. CONSTITUTION:A drainage pump is formed so that a DC brushless motor 1 is disposed at a central part, the center of the rotary shaft 2 of a blade 5 is made to coincide with the gravity center position of a motor 1, and noncontact casings 4a and 4b are arranged to the outer periphery of the blade 5. Further, the drainage pump is formed so that the rotor part of the DC brushless motor 1 is incorporated so as to be incorporated in the casing chamber and formed integrally with a blade. Further, the drainage pump is formed so that a suction port 6 part is positioned in parallel to a blade inlet and a shape of a continuous line of a plurality of arcs of circle starting from a parallel terminal point is provided. This constitution causes reduction of size and weight, reduction of the generation of noise and vibration, the increase of a lift, and provision of an increased life for the drainage pump, and easy and wide regulation of the delivery lift of the pump through the number of revolutions of a blade according to a target delivery lift.</p> |
