초록

A burner for a gas/air mixture with an inlet (2) for the gas/air mixture, wherein a jet tube (7) is located downstream of the inlet (2). The jet tube (7) has a jacket surface with a plurality of breakthroughs (8) and is surrounded radially a flame stabilizing device.

대표청구항 ▼

What is claimed is: 1. A burner for a gas/air mixture with an inlet (2, 6) for a gas/air mixture, wherein a jet tube (7) is located downstream of the inlet (2, 6), the jet tube (7) having a jacket surface with a plurality of breakthroughs (8), wherein a zone A created by the jet tube (7) has a P챕c

What is claimed is: 1. A burner for a gas/air mixture with an inlet (2, 6) for a gas/air mixture, wherein a jet tube (7) is located downstream of the inlet (2, 6), the jet tube (7) having a jacket surface with a plurality of breakthroughs (8), wherein a zone A created by the jet tube (7) has a P챕clet number that prevents flames from backfiring in the jet tube (7), and wherein the jet tube (7) is surrounded radially by means (9, 16, 17) for stabilizing the flame consisting of a plurality of ring disks (9, 16, 17) arranged radially from the jet tube (7) and spaced at an axial distance from each other. 2. The burner as defined in claim 1, wherein combustion of gas takes place primarily in the flame-stabilizing means (9, 16, 17). 3. The burner as defined in claim 1, wherein a blower to transport the gas/air mixture into the jet tube (7) is located after the inlet (2). 4. The burner as defined in claim 1, wherein the jet tube ( 7) is made from a fireproof ceramic material. 5. The burner as defined in claim 4, wherein the fireproof ceramic material has a porosity of 75 to 95 vol. %. 6. The burner as defined in claim 1, wherein the flame stabilizing means is created from foam ceramic material. 7. The burner as defined in claim 1, wherein the ring disks (9, 16, 17) are created from first (16) and second ring disks (17), and wherein a ring radius (R1) of the first ring disks (16) is smaller than a ring radius (R2) of the second ring disks (17). 8. The burner as defined in claim 7, wherein the ring radius (R1) of the second ring disks (17) is at least twice as large as the ring radius (R1) of the first ring disks (16). 9. The burner as defined in claim 7, wherein the first ( 16) and the second ring disks (17) are placed alternately on the jet tube (7) in the axial direction. 10. The burner as defined in claim 9, wherein the alternating succession of the first (16) and the second ring disks (17) creates a first flame-stabilisation zone (B1) located radially inside as well as a second flame-stabilisation zone (B2) located radially outside without first ring disks (16) in between. 11. The burner as defined in claim 10, wherein the P챕clet number of the first flame-stabilisation zone (B1) is less than the P챕clet number of the second flame-stabilisation zone (B2). 12. The burner as defined in claim 7, wherein a surface of the ring disks (9, 16, 17) is rippled so that current flow canals (19) are created between two adjacent ring disks (9, 16, 17) from the jet tube (7) to an outside circumference edge (14) of the ring disks (9, 16, 17). 13. The burner as defined in claim 12, wherein wave crest lines (13) of the ripples (18) run from a center to the outside circumference edge (14) of the ring disks (9, 16, 17) so that continuous current flow canals (10) are created between two adjacent ring disks (9, 16, 17) from the jet tube (7) to the outside circumference edge (14) . 14. The burner as defined in claim 13, wherein a cross section of the current flow canals (10) increases radially from an inside to the outside. 15. The burner as defined in claim 13, wherein the P챕clet number in the flame stabilizing means increases radially towards the outside. 16. The burner as defined in claim 12, wherein the surface of the ring disks (9, 16, 17) has a plurality of additional breakthroughs (15). 17. The burner as defined in claim 7, wherein the ring disks (9, 16, 17) are made from a fireproof ceramic material. 18. The burner as defined in claim 16, wherein the ceramic material is created from mullite fibers on an aluminium oxide matrix. 19. The burner as defined in claim 7, wherein the ring disks (9, 16, 17) are arranged between two additional, fireproof ceramic ring disks (11) located in a vicinity of ends of the jet tube (7). 20. The burner as defined in claim 1, wherein the jet tube (7) has a P챕clet number of <65 and the flame stabilizing means (9, 16, 17) has a P챕clet number of >65. 21. The burner as defined in claim 1, wherein the flame stabilizing means (9, 16, 17) is surrounded by a heat exchanger (12).