| 摘要 |
FIELD: heating. ^ SUBSTANCE: invention concerns heat exchange aggregates and lamellar heat exchangers and can be applied in pipeless domestic convectors, heat exchangers of heat boilers and electric transformers, car radiators, water and oil coolers and cooling machines. Lamellar heat exchanger includes a stack of plates positioned over clearance between them. Each plate featuring at least one ledge, and ledges of adjoining plates are inserted into each other and fixated to form heat carrier flow channel. Each ledge is made in the form of tapered cone along its whole height, with tilt angle of the cone generatrix selected by tg=S/A condition, where S is wall width of respective plate, A is distance between similar surfaces of adjoining plates. Plates and ledges are basically of the same wall width, and wall width of heat carrier flow channel along its whole length is at least equal to double width of ledge wall for ledges of the height, at which walls of heat carrier flow channel have sites formed by the walls of three ledges inserted into each other. Plates with ledges are made out of steel, and all plate and ledge surfaces are coated with copper partially diffused into steel. ^ EFFECT: process reliability of heat exchanger manufacturing, high heat conductivity properties and long operational life. ^ 2 cl, 3 dwg |
