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AssigneeChiyoda Corporation
InventorsHiroshi Miyama, Tetsuhiko Ohki, Hitoshi Kaji, Yoshiyuki Yusa, Yasuo Hirose
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This invention aims to attain an industrial furnace which ensures uninterrupted operation of itself and protects accessorial devices thereof including a rotary regenerative burner against otherwise possible damage when the rotary regenerative burner suffers from a mechanical trouble, and possess high responsivity and high accuracy. This industrial furnace has an oxidizing agent passage (12) communicating with-an oxidizing agent duct (33a) of a rotary regenerative burner (30), an exhaust gas passage (13) communicating with an exhaust gas duct (33b), a bypass (15) allowing intercommunication between the oxidizing agent passage (12) and the exhaust gas passage (13), and cut-off valves (16, 17) provided respectively in the bypass (15) and the exhaust gas passage (13), whereby the cut-off valve (16) on the bypass (15) side and the cut-off valve (17) on the exhaust gas passage (13) is controlled in response to a signal from burner.
In an industrial furnace having disposed on the wall of a combustion chamber at least one rotary regenerative burner comprising a gas permeable regenerator and a duct part communicating with said regenerator of each rotary regenerative burner, and having formed therein an oxidizing agent duct, for passing an oxidizing agent and an exhaust gas duct for passing the exhaust gas from said combustion chamber and adapted to heat said oxidizing agent with the heat of said exhaust gas through said each regenerator while rotating said each regenerator, and said each duct part relative to each other, the improvement being in that said industrial furnace is provided with a bypass allowing inter communication between an oxidizing agent passage communicating with said each oxidizing agent duct, an exhaust gas passage communicating with said each exhaust gas duct, and said bypass and said exhaust gas passage having switching cut-off valves disposed therein.
Dependencies are inferred from the claim text.