摘要 |
<p>The burner crown has discharge holes on different planes, and borehole rings lying along a wall of the cap, where each of the rings is aligned parallel with the other three rings. Output holes (3) are aligned on corresponding horizontal planes, where each of the output holes is not aligned perpendicular to the holes of the contiguous rings. Number of holes of each of the rings is adjusted under retention of size by changing power output of a gas burner.</p> |