HEAT EXCHANGE PLATE AND PLATE-TYPE HEAT EXCHANGER Russian patent published in 2014 - IPC F28D9/00 

FIELD: heating.

SUBSTANCE: plate-type heat exchanger comprises several heat exchange plates (1) provided one near the other and providing for the first interplate gaps (3) and the second interplate gaps (4) alternately. Every second heat exchange plate forms a primary plate (V) and every second secondary plate (1"). Every heat exchange plate is continued in the plane (p) of extension and comprises a heat transfer zone and an extreme zone around the heat transfer zone. The heat transfer zone comprises a flute (30) consisting of ridges (30) and recesses (40) each of which is continued in the longitudinal direction. The ridges have two extreme surfaces (31, 32) and a base surface (33) between the extreme surfaces and with the first width (34) being transverse to the longitudinal direction. The recesses have two extreme surfaces (41, 42) and a base surface (43) between the extreme surfaces and with the second width (44) being transverse to the longitudinal direction. The base surface of the recesses at primary plates is inclined in respect to the extension plane and the base surface of the ridges at secondary plates is inclined in respect to the extension plane.

EFFECT: reduced size of points and areas of contact between plates.

17 cl, 10 dwg