FILM-TYPE HEAT EXCHANGER Russian patent published in 2001 - IPC

FIELD: refrigerating engineering. SUBSTANCE: the film-type heat exchanger has a body, accommodating heat-exchange pipes for the working medium changing its phase state, connected to the distributing devices positioned in the headers; a tank, tray and a heat-transfer agent pump, the heat-exchange pipes for the working medium changing its phase state are installed vertically, grouped in heat-exchange sections, each provided with inlet and outlet horizontal headers, and the pipes for supply of the heat-transfer agent are positioned coaxially outside the heat-exchange pipes for the working medium changing the phase state and provided with distributors of the heat-transfer agent flow, connected with its upper part to the heat- transfer agent tank, and with the lower part communicated with the tray; the distributors of the heat-transfer agent flow are installed in an annular gap between the pipes and made in the form of cylindrical inserts, the inner surface of each insert in the upper part is made in the form of a confuser changing into a cylindrical bush, and a round thread is formed on the inner surface. EFFECT: enhanced thermal capacity of the heat exchanger. 2 cl, 6 dwg