PLATE-TUBE HEAT EXCHANGER Russian patent published in 2000 - IPC

FIELD: heat-exchange apparatus. SUBSTANCE: heat exchanger has stack of coupled plates. Edge of beading over their perimeter is made in the form of lugs bent at an angle exceeding acute angle between generating line of beading and longitudinal axis of internal channel. Surface of bent lugs in internal channel is made flat or oval. Surface of bent lugs is made helical in clockwise or counter-clockwise direction, with lugs alternating along longitudinal axis of internal channel. Front edge of plates is made as broken line with hollows between holes and projections which configuration is analogous to that of near side of adjacent hole. EFFECT: higher efficiency of heat exchange. 5 cl, 2 dwg