HEAT EXCHANGE ELEMENT, METHOD FOR ITS MANUFACTURE AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2021 - IPC F28F1/40 

FIELD: heat engineering.

SUBSTANCE: inventions group is intended for use in heat engineering, relates to the design of heat exchange elements, the method and device for their manufacture and can be used in the chemical, petrochemical, engineering, heat power and other industries in order to ensure effective heat exchange between different media. The heat exchange element contains a cylindrical tubular base in the form of a tube (1) with a microrelief on the inner surface, on which a sheet heat exchange element in the form of a shell (2) with an inner relief heat exchange surface forming a tubular base wall and an adhesive layer is fixed heat exchange layer. A method for manufacturing a heat exchange element includes the formation of a relief of a heat exchange surface on a sheet material, which is carried out by surface-plastic deformation of a sheet material (2) using a sectional drum (3) acting on it with profile dies (8) on a relief-forming surface. The rotation of the drum is carried out by continuous feeding of the sheet material (2) located in the support tray (22) on its elastic base (23) with fixation by means of the sides (25). The sheet is formed on the sheet-bending equipment into a shell with an internal relief heat-exchange surface, and the shell is made with the possibility of installation and fixation in the pipe (1). Before installation, the inner surface of the pipe is processed using a device with a drive drum (26) equipped with a needle tool (29) and glue supply pipes (30), with the help of which a microrelief is formed and glue based on aluminum powder or boron nitrate is applied to it. The shell (2) is installed on an adhesive layer, with the help of which the shell is fixed in the pipe and a combined heat exchange layer is formed. To implement the method, universal machines can be used.

EFFECT: expanding the arsenal of heat exchange elements and technologies for their manufacture, in the regularization of the surface of the heat exchange element and stabilization of heat exchange processes, due to the use of a new technology of sheet surface plastic deformation and the formation of multilayer, multifunctional, adaptive, heat-contact surfaces, as well as in reducing thermal stresses due to the formation of a specific shape embossed heat exchange surface.

10 cl, 7 dwg