HEAT EXCHANGER Russian patent published in 1994 - IPC

FIELD: heat power engineering. SUBSTANCE: heat exchanger has stack of profiled plates 1 with holes for passage of media. Projections of each plate 2 are received by groove in adjacent plate forming finned passage. Stack is located between coupling slabs 3 provided with holes. Bush 4 fitted between the slab and upper plate corresponds by its external surface to the groove in the plate. Arranged in between the slab last plate is bush 5 whose inner surface corresponds to projection of plate. Surfaces of bushes directed towards slabs are flat in shape. Diameter of bushes is more than that of the hole in the slab by 10 to 20% . EFFECT: enhanced efficiency. 2 cl, 1 dwg