SINGLE-STAGE, MULTIPLE OUTLET CENTRIFUGAL BLOWERABSTRACT OF THE DISCLOSUREThe rotatable impeller of a single-stage centrifugalblower is housed in a casing one side of which comprisesa spiral plenum having an opening which extends alonga predetermined limited portion of the perimeter of theimpeller and the other side of which includes aport located near the periphery of the impeller butdisplaced from the opening of the plenum so that it isout of register with that opening. The spiral plenumincludes an exit section that provides a first fluidoutlet from the casing, and the port serves as asecond, independent fluid outlet.
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