| 摘要 |
PURPOSE:To contrive the improvement of combustion property and cost reduction by providing the air control apparatus equipped with two or more of opening and closing valves joining an annular space with a ventilator and a controller to control the air fed into the combustion chamber changing a rotation angle of the opening and closing valves. CONSTITUTION:At the initial state the opening and closing valve 27 of an air controller 9 closes a vent 21 and an opening and closing valve 26 opens the vent 21 in the opening area corresponding to the phase angle portion slipped off with respect to the opening and closing valve 27. When the power supply switch of a burner device 1 is switched ON at this state, the combustion amount is determined on the bases of the setting level of a combustion controller 31 by a controller 30. In case where this combustion amount is in a minimum combustion region, the combustion amount of the air corresponding to the combustion amount is fed from a ventilator 10 to the first annular space 17 through the vent 21 by control signal of the controller 30 at the initial state without driving a pulse motor 24. Then, the combustion air is jetted into a combustion chamber 2 from the first air jet vent to be blended better with a fuel sprayed into the combustion chamber 2 from a pressure spray nozzle 11 and to burn this blended air after igniting it by an electrode 12. |
