The present invention relates to a heat exchanger for recovering the waste heat of the combustion exhaust heat exchanged with the outside air for the waste heat of the exhaust combustion air generated during the combustion of the boiler through the integral heat pipe having a spiral corrugated structure.;Generally, for convenience of life, heating is artificially generated in a living space by using a boiler or a combustion heating device according to conditions, and the boiler or the combustion heating device uses the energy through the combustion heat of the used fuel. In this process, combustion air and gas are discharged to the outside through the flue. The thermal energy remaining in the gas and air discharged after the combustion is discharged to the outside through the combustion exhaust waste heat recovery heat exchanger, and the thermal energy is released to the outside. It recovers bay and transfers heat energy to the air of daily space and reuses it in the composition of space heating.;According to the present invention, the rapid heat transfer of the heat pipe quickly recovers the combustion heat energy remaining in the gas and air that is discharged, and allows the air of the daily space to pass through a separate inflow passage for efficient heat exchange. A spiral heat pipe heat dissipation tube (condensation tube) is placed in the inflow passage, and the exhaust waste heat transferred through the heat pipe is installed in a spiral heat pipe with a metal mesh or metal thread having excellent heat conduction around the heat dissipation tube. It is absorbed by the heat dissipation pipe and surrounding metal yarns so that the heat exchange with the inlet air is performed efficiently.
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