METHOD OF MANUFACTURING INDIRECT HEATING WATER HEATER Russian patent published in 2019 - IPC F24H1/00 

FIELD: heating.

SUBSTANCE: invention relates to indirect heating water heaters and can be used in heating boilers for residential, public and industrial buildings and facilities using indirect water heating for hot water supply system. Method of making a water heater includes making a closed heating spiral element from annealed stainless steel tube by winding its coils inside the housing, for this purpose tube is passed through fixed in space tubular template with curvilinear end in form of section of coil turn. Curved portion of the template is placed at the bottom of the inner cavity of the housing, the free end of the tubular heating element is fixed outside the housing, after which the housing is rotated about its longitudinal axis with simultaneous linear displacement thereof along its longitudinal axis in direction from the fixed end of the tubular heating element with simultaneous linear supply of tubular heating element along the template. Corrugated tube is used as a heater. Free ends of tubular heating element are fixed near mounting neck.

EFFECT: higher corrosion resistance.

3 cl, 2 dwg