| 摘要 |
PURPOSE:To enable to perform inexpensively and easily control of inner pressure of a furnace, by making a quantity of exhaust gas regulate by controlling a loading quantity of air by loading the air into a stack of a combustion furnace. CONSTITUTION:Control of inner pressure of a furnace is performed by controlling an adjusting valve 6 by a controlling prime mover 5 (such as electric type, hydraulic pressure type and air pressure type) which received a signal from a pressure setting device 3 (the device turning a difference between set pressure and the inner pressure into an electric signal) detected the inner pressure of the furnace 1 by a pipe 7 and controlling a quantity of loading air into a stack 2 from a blower 4. As for the other method, a quantity of loading blast is controlled by controlling the number of revolutions of the blowers 4 through the signal from the pressure setting device 3 without having the controlling prime mover 5 and the adjusting valve 6, or the inner pressure of the furnace is controlled by controlling the quantity of the air to be sucked by blasting force in the stack by controlling the adjusting valve 6 by the controlling prime mover 5 without having the blower 4, or power of the blower is reduced by making use of the above methods together. |
