Burner device

Claim 1

A burner device comprising: a burner body having a cylindrical connecting portion at a lower side thereof, a nozzle device threaded into a front portion of said burner body, a rear portion of said burner body having a valve device therein, and a piezoelectric ignition device provided at a side of said burner body; said nozzle device including a nozzle tube having a flow passage formed therethrough and having a burner at an exit end of said nozzle tube; said burner including: a pipe-shaped nozzle head which forms separately a main passage interior to a sub-passage from said flow passage of said nozzle tube, each providing a flow of a fuel-air mixture therethrough; an insulating cylinder mounted on said nozzle tube and serving as an electrode stand which surrounds said sub-passage; and a discharge electrode at a side of said insulating cylinder, said discharge electrode communicating with the sub-passage fuel-air mixture and being connected with a lead wire of said piezoelectric ignition device; and wherein; said valve device includes: a cylindrical opening in a rear portion of said burner body; a valve needle inserted into said cylindrical opening; a valve seat disposed within said burner body, wherein; an end of said valve needle mates with said valve seat when inserted into said burner body, and; a valve operating device connected to said valve needle.