| 摘要 |
PURPOSE:To improve stability in combustion state with a proper air-fuel ratio by providing a control section which corrects by increase and decrease for a specified time the quantity of primary air supply corresponding to the change in the flow rate characteristics of an electro-magnetic pump when the combustion amount of a vaporization burner is increased or decreased. CONSTITUTION:In the judgement of whether the hot air temperature should be lowered, if NO is indicated, the controller is returned to the starting of hot air temperature control, and for YES the control to lower the hot air temperature is executed. Namely, when the hot air temperature is lowered, the pulse width for an electro-magnetic pump is decreased to a smaller width, and next the rotational speed N of ACF is lowered to Nn-1, and at the same time the rotational speed Nn-1 is further lowered by DELTANn-1. Then after a specified time DELTAt has elapsed, the rotational speed of ACF is controlled to return to Nn-1. In other words, when the combustion amount is changed by controlling the air supply amount to increase or decrease corresponding to the increase and decrease of flow rate according to the pump characteristics, it is made possible to match the change in the fuel supply amount according to the electro-magnetic pump to the air supply amount and improve the stability in the state of combustion. |
