COMBUSTION APPARATUS HAVING AIR SUPPLY AND EXHAUST GAS HEAT EXCHANGER

摘要

The purpose of the present invention is to provide a combustion apparatus with a supply and exhaust gas heat exchanger capable of preventing loss of heat energy and increasing heat efficiency as the temperature of supplied air is increased by heating the supplied air with waste heat of hot exhaust gas passed through a heat exchanger, and reducing installation costs by using an exhaust duct made of a synthetic resin by decreasing the temperature of the exhaust gas discharged to the outside. To this end, the combustion apparatus comprises: a burner generating exhaust gas; a blower supplying external air to the burner; a main heat exchanger absorbing the heat of the exhaust gas generated in the burner; an exhaust gas duct discharging the exhaust gas passed through the main heat exchanger to the outside; an air supplying duct allowing the external air to flow into the blower; the supply and exhaust gas heat exchanger which performs heat-exchange on the external air flowing into the blower and the exhaust gas discharged through the exhaust gas duct around a thin film plate interposed between the external air and the exhaust air; and an exhaust air flue discharging the exhaust air passed through the supply and exhaust gas heat exchanger to the outside.