A Low-NOx combustor capable of internal recirculation of flue gas by using venturi effect through improvement of burner structure

摘要

The present invention relates to a combustion apparatus capable of recirculating exhaust gas generated inside a combustion furnace by using a venturi effect through improvement of a burner structure, comprising: a combustion furnace; And a burner whose tip portion is inserted into the combustion furnace and positioned therein, wherein the burner includes a primary air supply pipe disposed in a central portion and configured to mix fuel and primary air to be supplied into the combustion furnace; A secondary air supply pipe positioned to surround the primary air supply pipe and configured to supply secondary air into the combustion furnace; A tertiary air supply pipe positioned to surround the secondary air supply pipe and configured to supply tertiary air into the combustion furnace; And a plurality of exhaust gas recirculation pipes formed along the periphery of the inside of the combustion furnace of the tertiary air supply pipe.