| 摘要 |
<p>A burner security device for igniting and gas shutting-off as flameout comprises a flame ionization sensor for detecting flame ion generated by combustion in the burner, an igniter for igniting the burner, a temperature sensor for detecting combustion temperature of the burner, and a control device. Said control device is equipped with IC, compares the difference between the detected temperature from the temperature sensor and the temperature setting value in the IC, and sends signal to shut off the gas when the difference gets out of a preset range. According to such structure of the security device, the presence of combustion can be judged by comparing the difference between temperatures, and if no combustion exists, the gas will be shut off in a short time, and accident happening is prevented.</p> |
