An embodiment of the invention discloses a centrifugal device, which comprises a motor, an impeller and a spiral volute, wherein the impeller is driven by the motor, the spiral volute is contained in the impeller, and a spiral line wrap angle of the spiral volute ranges from 360 degrees to 460 degrees. The centrifugal device in the embodiment has the advantages of high efficiency, low noise, low cost and the like.