CONDENSING HEAT EXCHANGER WITH TWO COILS FOR HEATING WATER AND/OR PRODUCING HOT WATER FOR HOUSEHOLD NEEDS Russian patent published in 2019 - IPC F24H1/43 

FIELD: heat exchange.

SUBSTANCE: invention relates to a condensation heat exchanger (1) for heating water and/or for producing hot water for sanitary purposes, comprising, in parallel connection, a first inner coil (2) with a smooth surface and a second external coil (3), where said second coil (3) is spirally wound around said first coil (2), and inside said first (2) and second (3) coils fluid medium, heat carrier, circulates independently, said first coil (2) performing heat exchange with flue gases mainly by radiation and convection, and said second coil (3) performs heat exchange with flue gases mainly due to condensation, and wherein said heat exchanger is characterized by that said second coil has a smooth surface, said heat exchanger (1) is divided by insulating partition (4) into first, upper, (1'), or combustion zone, and to second, lower, (1''), or condensation zone; wherein said insulating partition (4) divides said heat exchanger (1) into said two regions (1', 1'') in ratio, given by following formula: 45 % ≤ H₁/L ≤ 60 %, where L is the heat exchanger height, and H₁ - height of first zone (1').

EFFECT: heating water and/or producing hot water for sanitary purposes.

6 cl, 16 dwg