Gas heater of accurate control air -fuel ratio

TLDR: In this paper, a gas heater of accurate control air-fuel ratio, a serial communication port, include: combustor, heat exchanger, inlet tube, outlet pipe, fan, gas proportional valve, main control unit, collection petticoat pipe and oxygen sensor.

Abstract: The utility model discloses a gas heater of accurate control air -fuel ratio, a serial communication port, include: combustor, heat exchanger, inlet tube, outlet pipe, fan, gas proportional valve, main control unit, collection petticoat pipe and oxygen sensor, the combustor is installed at a burning intracavity, fan and gas proportional valve provide the burning required air and gas for the chamber of burning, the heat exchanger install one with the heat transfer intracavity of burning chamber intercommunication, inlet tube, outlet pipe are connected with the heat exchanger, the collection petticoat pipe is installed on the heat transfer chamber, oxygen sensor installs in album petticoat pipe 8, main control unit and fan, gas proportional valve and oxygen sensor are connected. The utility model discloses increase oxygen sensor in album petticoat pipe, the oxygen content that makes the flue gas remain stationary can be finely tuned gas proportional valve and fan according to the oxygen content in the flue gas of burning back, no matter can both guarantee the best air -fuel ratio under any burning operating mode, and be favorable to the further catalytic treatment of flue gas.