Corrugated plate counter flow heat exchanger

Claim 1

A CORRUGATED PLATE HEAT EXCHANGER MADE UP OF A SERIES OF STACKED CORRUGATED PLATES HAVING SUBSTANTIALLY PARALLEL WAVE FORMATIONS WITH OPPOSITELY DISPOSED INWARDLY AND OUTWARDLY PROJECTING ALTERNATE CRESTS ON ADJACENT WAVE FORMS; A PLURALITY OF PAIRS OF SAID STACKED PLATES, EACH PAIR OF SAID PLATES POSITIONED TOGETHER WITH INWARDLY PROJECTING WAVE CRESTS CONTACTING, EACH PLATE OF A PAIR HAVING A WAVE FORMATION DISTINGUISHED FROM THE OTHER PLATE, THEREBY TO FORM LONGITUDINALLY EXTENDING PRIMARY FLOW PASSAGES BETWEEN SUCH PLATES OF EACH EXTENDING FROM AN INLET AT ONE END TO AN OUTLET AT THE OPPOSITE END OF SAID STACKED SERIES OF PLATES; SUCH PAIRS OF PLATES EACH HAVING THEIR OUTWARDLY PROJECTING CRESTS OMMITED IN A DESIRED SECONDARY FLOW INLET REGION AND IN A DESIRED SECONDARY FLOW OUTLET REGION SPACED THEREFROM ON THE OPPOSITE LONGITUDINAL SIDE AND ADJACENT THE OPPOSITE END OF SAID STACKED PLATES BUT SUCH CRESTS NOT OMITTED IN SAID PRIMARY FLOW REGION, THEREBY LEAVING A CENTRAL REGION BETWEEN SAID INLET AND SAID OUTLET REGIONS WITH PROJECTIONS OF CRESTS OUTWARD FROM BOTH SIDES OF EACH PLATE OF SAID PAIR OF PLATES; SAID REGIONS OF OMITTED CRESTS IN SAID SECONDARY FLOW REGIONS OF INLET AND OUTLET LOCATED FOR HEAT EXCHANGE WITH SAID PARIMARY FLOW PASSAGES THROUGH A SINGLE PLATE THICKNESS AND RECEIVING SUPPORT, CONTINUING IN SAID REGIONS, AFFORDED BY SAID CONTACTING OPPOSITELY PROJECTING CONTINUING WAVE CRESTS ON THE OPPOSITE SIDE OF SAID PLATES FORMING SAID PRIMARY FLOW PASSAGES THEREBY TO MAINTAIN SPACING OF SAID PLATES AGAINST HIGH PRESSURE OF SECONDARY FLOW; MEANS FOR STACKING SAID PAIRS OF PLATES WITH SAID PROJECTING CREST REGIONS CONTACTING EACH OTHER, THEREBY TO FORM COUNTER LONGITUDINALLY SECONDARY FLOW OF PASSAGES LONGITUDINALLY COUNTER TO SAID PRIMARY FLOW PASSAGES AND WITH A TRANSVERSE FLOW INLET AND A TRANSVERSE FLOW OUTLET FORMED FOR SAID SECONDARY FLOW BY SAID SPACED INLET AND OUTLET REGIONS POSITIONED FOR UNIFORMITY OF POSITIVE HEAT TRANSFER FROM PRIMARY TO SECONDARY FLOW PASSAGES THROUGH A SINGLE PLATE THICKNESS.