| 摘要 |
PURPOSE:To enable accurate temp. control by controlling of burning amount of catalytic burner electrically. CONSTITUTION:A solenoid valve mechanism 5 is connected to a fuel supply passage 10 leading to a catalytic burner 16 and also a sensor 18 comprising temp. resistance variable element is placed at a heating area of the catalytic burner 16. A exciting coil 8 of the solenoid valve mechanism 5 is connected to an output terminal of a bridge circuit 22 having two fixed resistances 19, 20, one variable resistance, and the sensor 18 connected each other. Therefore, as burning control of the catalytic burner is exactly made by electric means, the most suitable heating is easily accomplished corresponding to the condition of heated object. This device has little uneven factors in performance as compared to the prior mechanical means and easy handling property and also adjustment of setting temp. are selectively obtained.
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