| 摘要 |
A fuel fired burner comprises a chamber 24 for receiving a premixture of fuel and air. A wall 50 of the chamber is in the form of a flamestrip provided with a plurality of elongate slots 66 extending through the wall. Each slot 66 has an inlet portion 84 which converges to an end 84a leading to a substantially constant dimension portion 86. The pitch of the slots 66 along the chamber wall 50 is P, the width of each slot is W, and the length of the constant dimension portion 86 is L. The dimensions of the flamestrip are arranged such that L/W >/= 10 and P/W >/= 2. A burner comprising such an arrangement reduces the likelihood of resonant combustion noise being generated when enclosed within a heating appliance. <IMAGE> |
