Heat exchange device

Claim 1

AN AIR COOLED CONDENSER FOR A REFRIGERATION SYSTEM COMPRISING, AN IMPERVIOUS BASE MEMBER HAVING A DISCSHAPED CENTRAL PORTION AND A FRUSTO-CONICAL DEPENDING SKIRT FORMING THE PERIPHERY OF THE BASE MEMBER, A VERTICALLY DISPOSED INLET HEADER FOR RECEIVING A REFRIGERANT IN A GASEOUS STATE, A PLURALITY OF TUBES CONNECTED TO SAID INLET HEADER AT VERTICALLY SPACED POINTS, EACH TUBE HAVING A PLURALITY OF CONVOLUTIONS WHICH SLOPE DOWNWARDLY IN PROCEEDING OUTWARDLY TO THE LARGER DIAMETER CONVOLUTIONS THEREOF FORMING AN ANNULAR ASSEMBLY WITH THE CONVOLUTIONS OF THE LOWERMOST TUBE LYING ALONG AND SUPPORTED ON SAID SKIRT, A VERTICALLY DISPOSED OUTLET HEADER CONNECTED TO EACH OF SAID TUBES AT THE OUTER PERIPHERY OF THE ANNULAR ASSEMBLY FOR GUIDING CONDENSATE DOWNWARDLY FROM OUTER ENDS OF SAID TUBES, SAID ANNULAR ASSEMBLY HAVING AN OPEN UNOBSTRUCTED CENTRAL AREA DEFINED BY THE INNER CONVOLUTIONS OF SAID TUBE, AN IMPERVIOUS ANNULAR MEMBER OVERLYING THE UPPER PORTION OF SAID ANNULAR ASSEMBLY AND CLOSING AREAS BETWEEN THE CONVOLUTIONS OF THE TUBES AND HAVING AN OPEN CENTRAL PORTION IN REGISTRATION WITH SAID OPEN CENTRAL AREA, AND A FAN HAVING BLADES ROTATABLE ADJACENT THE UPPER END OF SAID ANNULAR ASSEMBLY FOR DRAWING AIR RADIALLY INWARD OVER ALL CIRCUMFERENTIAL PORTIONS OF THE TUBES FROM THE OUTER PERIPHERY OF THE ANNULAR ASSEMBLY AND DISCHARGING THE AIR AXIALLY UPWARD FROM THE CENTRAL AREA OF THE ANNULAR ASSEMBLY.