| 摘要 |
The cooling medium is received by the mouthpiece via an outer coaxial cover tube (12). The free end of the mouthpiece directed into the hearth incorporates a cooling chamber (15) which is connected via channels (1) with the outer cover tube on either side of separating walls. These walls divide the cover tube into two halves for inward and outward flow of cooling medium. A central mixing chamber (18) for fuel and air is provided axially inside the cooling chamber. The mixture obtained in the mixing chamber is delivered to the mouthpiece through at least two holes (17) radially directed between the cooling channels (16). |
