| 摘要 |
PURPOSE:To obtain a pulse burner of low noise without beat noise, by juxtaposing pulse burners into which input power is equally divided to that the sum total of input power is to become a required input power. CONSTITUTION:When the rate of combustion and the pulsating frequency in the primary pulse burner 1 are larger than those in the secondary pulse burner 2, the velocity of combustion waste gas 27 in the part where tail pipes 5 and 6 are connected by a connecting pipe 29 is faster than the velocity of combustion waste gas 28. Part of combustion waste gas 28 joins a connecting flow 30, passing through the connecting pipe 29 by the ejector effect of a faster flow 27. While the degree of negative pressure in combustion chambers 3 and 4 is increased to get into a suction cycle, part of combustion waste gas 28 is sucked again toward the pulse burner 1, passing through the connecting pipe 29. As a result, the rate of mixed gas flowing into the combustion chamber 4 passing through a gas valve 18 and air valve 16 is increased. Thus pulsating frequency is increased, both burners are synchronized with each other, and least noise in both burners during cumbustion can be prevented. |
