| 摘要 |
PURPOSE:To obtain the combustion apparatus, in which the quantity of air for combustion is also adjusted automatically with the adjustment of the quantity of combustion, by setting up an element, a temperature thereof changes in response to the change of the quantity of air, into a combustion air path while detecting an output change due to the temperature change of the element and adjusting the quantity of air for combustion. CONSTITUTION:First and second solenoid valves 5, 6 fitted onto a fuel feed pipe 4 are opened by turning an operation switch ON, and a burner 2 is supplied with fuel. A suction and exhaust fan 9 is operated at the same time, the burner 2 is supplied with air through an air path 13 for combustion, and fuel is ignited by ignition plugs 7 and combustion is started. High- temperature exhaust gas generated flows into a heat exchanger 8 from a combustion chamber 3, and is discharged to the outside of a chamber by the suction and exhaust fan 9 while its temperature drops. On the other hand, a heating wire 14 in the air path 13 for combustion is conducted at the same time as operation is started, and its temperature is elevated, but its heat is robbed by air for combustion and it is kept at a fixed temperature. Accordingly, the electric resistance value changes slowly, and reaches fixed value, but a detector 15 detects the change of the resistance value, and transmits corresponding signals to a controller 16. The controller 16 compares signals from the detector 15 and set signals, controls a motor 12 and adjusts the quantity of air. |
