초록 ▼

A burner for burning a combustible gas comprising fuel gas and air that has been mixed before being supplied to the burner. The burner has a flame holder .[.concavely.]. .Iadd.axially and radially .Iaddend.recessed into a flame outlet. The .[.concave.]. configuration of the flame holder focuses the

A burner for burning a combustible gas comprising fuel gas and air that has been mixed before being supplied to the burner. The burner has a flame holder .[.concavely.]. .Iadd.axially and radially .Iaddend.recessed into a flame outlet. The .[.concave.]. configuration of the flame holder focuses the individual flames on the combustion surface toward a central location where the individual flames interact with and reinforce one another in a direction axial to the burner. Thus very little heat is transmitted directly from the burner in a direction normal to the burner axis. This characteristic of the burner allows it to be used to fire a flue type heat exchangers where the walls of the heat exchanger are very close to the burner without excessive temperatures being produced in the heat exchanger walls adjacent the burner.

대표청구항 ▼

[ I claim:] [1.] A flame type burner (510, 610, 710) for burning a combustible gas comprising:a burner body (511, 611, 711);a combustible gas inlet means for mixing a fuel gas and air and conveying it (512, 612, 712) into said burner body;a flame outlet (513, 613, 713) from said burner body; anda pe

[ I claim:] [1.] A flame type burner (510, 610, 710) for burning a combustible gas comprising:a burner body (511, 611, 711);a combustible gas inlet means for mixing a fuel gas and air and conveying it (512, 612, 712) into said burner body;a flame outlet (513, 613, 713) from said burner body; anda perforated flame holder (514, 614, 714) having a combustion surface that is .[.concavely.]. .Iadd.axially and radially .Iaddend.recessed into said flame outlet and that directs flames toward a central focus.