Centrifugal fan for vacuum cleaner

The present invention relates to a centrifugal blower for a vacuum cleaner to form inclined flow path between the diffuser and the rear vanes to reduce the flow resistance of the air blown out from the impeller, and the delivery air at the impeller passes through a passage formed in the diffuser and the rear vane so that the direction of flow abruptly changed by an object to be reduced as well as the noise provided a centrifugal blower for a vacuum cleaner is reduced and the flow path resistance of the air suction force and the operating efficiency of the centrifugal blower is improved. Centrifugal blower for a vacuum cleaner according to the invention to achieve the above object is a separator which is linked to the motor isolated and equipped with a impeller for blowing air impeller housing, the impeller casing to the upper and lower and the separator guiding and formed on the upper side and a diffuser for diffusing the air to be blown consists of a plurality of collars disposed on the radially outer periphery of the impeller, is formed in the lower portion of the separator of the diffused air from the diffuser into the motor-side flow path It comprises a rear vane, and that should the separator includes a slope inclined to the passage of air to the axis of rotation of the impeller. Vacuum cleaners, centrifugal blower, impeller, blade, diffusers, rear vanes