Centrifugal refrigeration compressor motor

Claim 1

A REFRIGERANT VAPORIZING DEVICE, COMPRISING: A HOLLOW CYLINDRICAL OUTER HOUSING ADAPTED TO BE VERTICALLY DISPOSED, AND HAVING CLOSED UPPER AND LOWER ENDS; A COMPRESSOR UNIT INCLUDING A ROTATABLE IMPELLER CENTRALLY DISPOSED UPON SAID HOUSING UPPER END, AND HAVING A VAPOR INLET OPENING; A CYLINDRICAL MOTOR HOUSING HAVING A MOTOR DISPOSED THEREIN WITH THE MOTOR SHAFT PROTRUDING FROM ONE END THEREOF, SAID MOTOR HOUSING BEING OF SUBSTANTIALLY LESSER DIAMETER THAN SAID OUTER HOUSING AND CONCENTRICALLY DISPOSED THEREIN WITH SAID MOTOR SHAFT EXTENDING THROUGH AN OPENING IN SAID UPPER END OF SAID OUTER HOUSING AND DRIVINGLY ENGAGING SAID IMPELLER; A VAPOR INLET TUBE COUPLED TO AN OPENING IN THE CIRCUMFERENTIAL SURFACE NEAR THE LOWER END OF SAID OUTER HOUSING FOR DELIVERING VAPOR INTO THE ANNULAR SPACE BETWEEN SAID HOUSING IN A DIRECTION SUBSTANTIALLY TANGENTIAL THERETO; A VAPOR OUTLET TUBE COUPLED BETWEEN AN OPENING NEAR THE UPPER END OF SAID OUTER HOUSING AND SAID VAPOR INLET OPENING OF SAID COMPRESSOR; AND A FLAT STRIP OF MATERIAL DISPOSED PERPENDICULAR TO THE LONGITUDINAL WALL OF SAID OUTER HOUSING AND WOULD ABOUT SAID MOTOR HOUSING IN A PLURALITY OF HELICAL TURNS SO AS TO DEFINE WITHIN SAID ANNULAR SPACE A VAPOR CHANNEL EXTENDING HELICALLY FROM SAID VAPOR INLET TUBE TO SAID VAPOR OUTLET TUBE.