Heat exchange element

Claim 1

A HEAT EXCHANGE AND SPACER ELEMENT FOR USE IN A PASSAGEWAY BETWEEN AND IN HEAT EXCHANGE RELATIONSHIP WITH CONDUITS OF A HEAT EXCHANGE DEVICE SAID ELEMENT COMPRISING A CORRUGATED METAL STRIP HAVING A PLURALITY OF SLITTED FINS SEPARATED BY CONNECTING MEMBERS AND BEING CONSTRUCTED AND ARRANGED TO DIVIDE SAID PASSAGEWAYS INTO A PLURALITY OF SMALLER INTERCOMMUNICATING AIR PASSAGEWAYS OF SUBSTANTIALLY EQUAL DIMENSIONS, SAID FINS CONSISTING OF A SUBSTANTIALLY PLANAR BASE AND PLURALITY OF SLITS THEREIN EXTENDING THROUGH AND IN TRAVERSE RELATIONSHIP TO THE LONGITUDINAL AXIS OF SAID FINS WITH EACH END THEREOF TERMINATING WITHIN A PLANAR BASE AND A PLURALITY OF LOUVERS TURNED OUT OF BASE PLATE ADJACENT SAID SLITS IN A MANNER SUCH THAN ALTERNATE LOUVERS EXTEND FROM SAID BASE PLANE ON OPPOSITE SIDES THEREOF, THE DIRECTIONAL ALTERNATION OF THE LOUVERS OF EACH FIN BEING IN REVERSE ORDER WITH RESPECT TO THE ALTERNATION OF THE LOUVERS OF THE FINS ADJACENT THERETO THEREBY PROVIDING SAID AIR PASSAGEWAYS WITH ALTERNATELY CONVERGING AND DIVERGING SECTIONS.