초록 ▼

A plate (1) for a plate heat exchanger is provided with a corrugation pattern of ridges (4) and grooves (3) intended to rest against the corrugation pattern on an adjacent plate so that a great number of supporting points (2) are formed. On at least one of its sides, the plate has ridges provided wi

A plate (1) for a plate heat exchanger is provided with a corrugation pattern of ridges (4) and grooves (3) intended to rest against the corrugation pattern on an adjacent plate so that a great number of supporting points (2) are formed. On at least one of its sides, the plate has ridges provided with recessed parts (5) positioned in the areas of the supporting points (2). Thus, the number of turbulence-generating supporting points and consequently the flow resistance are reduced in an adjacent heat exchanging passage (7).

대표청구항 ▼

In a plate heat exchanger, the combination comprising two adjacent plates defining a passage for flow of a heat exchanging medium, each of said two plates having a central plane and a corrugation pattern forming ridges projecting in opposite directions from said central plane, the ridges on each fac

In a plate heat exchanger, the combination comprising two adjacent plates defining a passage for flow of a heat exchanging medium, each of said two plates having a central plane and a corrugation pattern forming ridges projecting in opposite directions from said central plane, the ridges on each face of the plate being parallel to the ridges on the opposite face of the plate and forming parallel grooves in said opposite face of the plate, the ridges and grooves of each plate crossing ridges and grooves of the other plate, each plate having first regions where a plurality of ridges of the plate engage a plurality of crossing ridges of the adjacent plate to form a substantial number of supporting points in said passage, ridges of at least one plate having recesses at selected second regions where a plurality of ridges of said one plate would engage a plurality of crossing ridges of the adjacent plate except for said recesses, whereby said number of supporting points in said passage is less than it would have been without said recesses.