| 摘要 |
<p>The device regulates the boiler output rating by controlling the number of burner jets which are supplied with fuel. A gas distribution pipe (4) extends beneath the burner jets and contains a sliding stop, dividing it into two sections (a, b) separately coupled to the gas supply line. Pref. one of these sections (a) is directly coupled to the gas supply line, while the other supply section (b) is coupled to it via a branch line (21) of lesser dia, the flow through the branch line being controlled via a magnetic valve (22).</p> |
