| 摘要 |
The invention relates to a method of and means for optimizing the operating time of a low frequency sound generator used for soot cleaning of boilers, comprising a resonator tube (2) and a positive feedback feeder unit (1) connected to supply of compressed air. The operating time should be long enough for effective soot cleaning of the heating surfaces but as short as possible for preventing disturbing noise at the surroundings of the boiler. |
