Heat recovery type combustion apparatus

A heat recovery type combustion apparatus comprising a main body, a burner for heating a substance held inside said main body of said combustion apparatus and subjected to heating, an air conduit adapted to allow flow of combustion air in the interior thereof and laid in the proximity of said burner, an exhaust gas conduit for discharging exhaust gas arising from combustion from the main body of said combustion apparatus, and a heat-exchange member capable of utilizing the heat of said exhaust gas for heating said combustion air flowing through said air conduit, which combustion apparatus is characterized in that said heat-exchange member is formed of an air-pervious regeverative member made of a ceramic substance, said regeverative member is attached to the lateral wall of the main body of said combustion apparatus, a rotary duct is set in place inside said main body case disposed so as to communicate with said regeverative member, said air conduit and exhaust gas conduit are formed independently of each other throughout the entire length from the inlet to the outlet thereof inside said rotary duct, a fuel pipe for supplying fuel to said burner installed substantially at the central position of said regeverative member is laid as thrust through said rotary duct, and said rotary duct is rotated by rotary means and enabled to cause said combustion air to flow along said air conduit through said regeverative member into said main body of combustion apparatus and said exhaust gas to flow through the interior of said regeverative member and along said exhaust gas conduit.