CONDENSATION HEAT EXCHANGER WITH A PLASTIC BODY Russian patent published in 2008 - IPC F24H1/43 

FIELD: the invention is assigned for heat exchanging and may be used for heating and hot water supply.

SUBSTANCE: the condensation heat exchanger is fulfilled with a burner and has at least one tubular element consisting of one tube or of the group of tubes located from one end to another end forming a spiral winding, moreover the wall of the tube or of the tubes is manufactured of material of high thermal conductivity and has a flattened oval transversal section whose large axis is perpendicular or approximately perpendicular to the axis (X-X') of the spiral winding. The width of the gap separating two neighboring turns is constant and less then the thickness of the transversal section. The tubular element is installed motionlessly inside the gas-proof body. In the heat exchanger hot gases pass in radial or approximately radial direction through the tubular element. The body is fulfilled of thermal resistant plastic and has means for mechanical fixation of the tubular element in its main axial sector, moreover the means are fulfilled with possibility of amortization of axial efforts, caused with inner pressure of circulating in it liquid urging to deform its walls preventing transfer of these loads on the body.

EFFECT: reduces weight and cost price of the arrangement.

19 cl, 16 dwg