| 摘要 |
PURPOSE:To enable to obtain stable and fine oil drop atomization by constituting a tip of a nozzle part in such a manner that an injection nozzle for atomizing medium is placed at an outer tube and an injection nozzle for liquid fuel is installed at an inner tube and thermal expansion difference between the outer and inner tubes is absorbed by an inner mechanism at the tip of the nozzle. CONSTITUTION:Nozzles for atomizing medium and liquid fuel are independently installed and an atomizing medium nozzle 15 which has the least temp. difference from outside heat conduction is connected to an outer tube 6 and an inner tube 7 and the liquid fuel injection nozzle 3 is inserted into the atomizing medium nozzle 15. Therefore, thermal expansion difference at the guide tubes composed of the outer tube 6 and the inner tube 7 is absorbed by the fitting part between the atomizing medium nozzle 15 and liquid fuel injection nozzle 3. And when gas fuel is utilized as atomizing medium, there is no such a problem as leaking from an absorbing part for thermal expansion difference experienced in the past. Therefore, stable flow rate of atomizing medium is obtained and fine oil drop atomization is achieved by atomizing medium of small quantity and low pressure.
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