| 摘要 |
<p>A fuel-fired burner of the gas-fired fully premixed type comprises a plenum chamber 2 formed by walls, 5,7,8,9,10 and 11, the wall 11 having an inlet port 4 to enable the plenum chamber 2 to receive a mixture of gas and air from a mixing chamber 3 and the wall 5 comprising a plate having therein several through-going rectangular slots 6 which communicate with the chamber 2. The mixing chamber 3 has an inlet end 15 for connection to a source of pressurised air and a further inlet opening 17 in a wall 13 formed with a stub pipe 18 by means of which the chamber 3 can be connected to a source of fuel gas.</p> |
