Centrifugal impeller units

Claim 1

A CENTRIFUGAL AIR IMPELLER INCLUDING FIRST AND SECOND SIMILAR CONICALLY-SHAPED PARTS HAVING THEIR ENLARGED ENDS CONNECTED TOGETHER TO FORM A SUBSTANTIALLY SPHERICALLYSHAPED CENTRAL PORTION AND THE FIRST CONICALLY-SHAPED PART OF THE OUTER CASING HAVING A REDUCED OPEN END SHAPED TO BE CONNECTED TO AN OUTLET DUCT MEANS AND THE SECOND CONICALLY-SHAPED PART OF THE OUTER CASING HAVING A REDUCED OPEN END SHAPED TO BE CONNECTED TO AN INLET DUCT MEANS, AN INNER CASING ARRANGED WITHIN AND SPACED FROM THE OUTER CASING TO FORM A CIRCUMFERENTIAL PASSAGE FOR AIR AND INCLUDING A STATIONARY SUBSTANTIALLY SEMISPHERICALLY-SHAPED PART HAVING A CONVEX END ARRANGED IN ALIGNMENT WITH THE AXIS OF THE OUTLET DUCT MEANS AND A SECOND ROTATABLE SEMISPHERICALLY-SHAPED PART HAVING A CONVEX END ARRANGED IN ALIGNMENT WITH THE AXIS OF THE INLET DUCT MEANS, MEANS FOR DRIVING THE ROTATABLE PART OF THE INNER CASING AND MAINTAINING IT IN SPACED RELATION TO THE SECOND PART OF THE OUTER CASING, A PLURALITY OF SPACED DRIVING BLADES, EACH HAVING ITS ROOT PORTION SECURED TO THE OUTER PERIPHERY OF THE ROTATABLE PART OF THE INNER CASING AND ITS TIP ARRANGED IN CLOSE PROXIMITY TO THE INNER SURFACE OF THE SECOND PART OF THE OUTER CASING, EACH OF WHICH BLADES ORIGINATES AT A SPACED DISTANCE FROM THE CONVEX END PART OF THE INNER CASING AND TERMINATES AT A SUBSTANTIAL DISTANCE FROM THE ENLARGED END THEREOF AND EACH OF SAID BLADES BEING ARRANGED TO EXTEND SUBSTANTIALLY DIAGONALLY ON THE ROTATABLE PART OF THE INNER CASING IN SUCH RELATION TO EACH OTHER THAT DURING THE ROTATION OF THE SECOND PART OF THE INNER CASING, AIR STRIKING EACH BLADE WILL FLOW BETWEEN THAT BLADE AND THE NEXT SUCCEEDING BLADE IN THE ORDER OF REVOLUTION AND WILL BE DIRECTED IN A SUBSTANTIALLY AXIAL DIRECTION THROUGH THE CIRCUMFERENTIAL SPACE BETWEEN THE INNER AND OUTER CASINGS, AND A PLURALITY OF AIR TURNING VANES, EACH HAVING AN ARCUATE-SHAPED PORTION ARRANGED BETWEEN AND CONNECTED TO THE SEMISPHERICALLY-SHAPED FIRST PORTION OF THE OUTER CASING AND THE SEMISPHERICAL PART OF THE INNER CASING, SAID AIR TURNING VANES EACH BEING CONNECTED TO THE FIRST PART OF THE OUTER CASING AND THE STATIONARY PART OF THE INNER CASING AT A SUBSTANTIAL DISTANCE FROM THE AIR DRIVING BLADES TO THEREBY PROVIDE A PLENUM CHAMBER BETWEEN THE INNER AND OUTER CASINGS AND THE AIR DRIVING BLADES AND THE AIR TURNING VANES.