| 摘要 |
PURPOSE: A gas pressure controller of hot air blower is provided to sense changed amount of gas pressure and to enable optimal combustion condition by controlling ratio of gas and air amount corresponding to changed amount of gas pressure supplied. CONSTITUTION: A gas pressure sensing unit(140) senses pressure changed amount of supplied gas. A proportional valve drive unit(150) outputting a drive signal for turning on/off proportionally a proportional valve(160) depending on a control signal. The proportional valve(160) turned on/off proportionally by drive signal of the proportional valve drive unit(150) and a burner motor(170) controlling inflow amount of air outside according to the control signal. A control unit(110) outputs a signal for controlling gas amount depending on pressure change amount of the gas pressure sensing unit(140) and outputs a signal for controlling air amount to the burner motor. Herein, gas amount and air amount delivered to a burner unit(180) preestablished to the control unit(110) for controlling the ratio between gas and air amount by experiment value dependent upon standard gas pressure, low pressure gas and high pressure gas to an optimal combustion condition.
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