HEATING POWER CONTROLLING DEVICE
Document Type and Number:
Japanese Patent JP3659344
PROBLEM TO BE SOLVED: To solve problems that a heating power controlling device which always detects the opening of a flow control valve 3 opened by a stepping motor 34 by using a position sensor such as a rotary encoder and improves the accuracy of opening control becomes complex, and the accuracy is not required when the opening of the flow control valve 3 which controls the volume of gas supplied to a burner is controlled.
SOLUTION: The opening of the flow control valve 3 is controlled by the pulse number supplied to the stepping motor 34. When a microswitch 5 for operating an ignition device is turned on, the gap between the pulse number and an actual opening is corrected.
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