Based on the principle of high pressure jet burner jet, using high speed air gas nozzle will be required for combustion air proportion inhalation. Its characteristics are: air. The gas can be scaled, still can be absorbed into the amount of air required for combustion proportional gas pressure changes; air coefficient is small, the general a is equal to 1.03-1.05; the combustion temperature is high, easy to obtain the high temperature combustion region, burning low heat value of gas is the most favorable; simple operation, need not set the blower and air duct system (with the exception of the preheater and the resistance of the system is more than 300Pa)