Burner arrangement for a heating device, and heating device, particularly vehicle heating device

1. A burner arrangement for a heating device, comprising a combustion chamber ( 18 ) and a flame tube ( 22 ) conducting the combustion products away from the combustion chamber ( 18 ), having an inlet region ( 28 ) near the combustion chamber ( 18 ) at which combustion products enter the flame tube ( 22 ) and an outlet region ( 36 ) at which combustion products leave the flame tube ( 22 ), further comprising at least one intermediate outlet region ( 42 ) between the inlet region ( 28 ) and the outlet region ( 36 ), into which intermediate outlet region ( 42 ) a portion of the combustion products emerge from the flame tube ( 22 ).

2. The burner arrangement according to claim 1 , wherein the flame tube ( 22 ) has at least one intermediate outlet aperture ( 44 ) in at least one intermediate outlet region ( 42 ).

3. The burner arrangement according to claim 1 , wherein the flame tube ( 22 ) has at least two flame tube sections ( 24 , 26 ); and wherein the at least one intermediate outlet aperture ( 44 ) is provided in a transition region ( 38 ) between an upstream flame tube section ( 24 )—relative to the flow direction (R) of the combustion products in the flame tube ( 22 )—and a downstream flame tube section ( 26 ).

4. The burner arrangement according to claim 3 , wherein an aperture ( 40 ) in the transition region ( 38 ) between the flame tube sections ( 24 , 26 ) forms a portion of an intermediate outlet aperture ( 44 ).

5. The burner arrangement according to claim 3 , wherein the upstream flame tube section ( 24 ) has a greater cross sectional dimension than the downstream flame tube section ( 26 ).

6. The burner arrangement according to claim 5 , wherein the downstream flame tube section ( 26 ) engages in the upstream flame tube section ( 24 ), and at least a portion of an intermediate outlet aperture ( 44 ) is provided in the overlap region of the upstream flame tube section ( 24 ) with the downstream flame tube section ( 26 ).

7. The burner arrangement according to claim 3 , wherein the downstream flame tube section ( 26 ) is supported by at least one support region ( 46 ) on the upstream flame tube section ( 24 ).

8. The burner arrangement according to claim 2 , wherein the upstream flame tube section ( 24 ) and the downstream flame tube section ( 26 ) are of substantially cylindrical form.

9. The burner arrangement according to claim 2 , wherein the at least one intermediate outlet aperture ( 44 ) is formed in an outer wall of the flame tube ( 22 ).

10. A heating device, comprising a burner arrangement ( 12 ) according to claim 1 , and a heat exchanger arrangement ( 14 ) with a heat exchanger housing ( 48 ) into which a flame tube ( 22 ) projects.

11. The heating device according to claim 10 , wherein a support structure ( 60 ) for supporting at least one flame tube section ( 26 ) is provided on a side of the heat exchanger housing ( 48 ) facing the flame tube ( 22 ).

12. The heating device according to claim 11 , wherein plural ribs ( 56 ) extending in the longitudinal direction of the flame tube are provided on the heat exchanger housing ( 48 ); and wherein the support structure ( 60 ) comprises at least a portion of the plural ribs ( 56 ).

13. The heating device according to claim 12 , wherein the at least one flame tube section ( 26 ) is supported by clamping action between the plural ribs ( 56 ) distributed over its periphery.

14. The heating device according to claim 12 , wherein the at least one flame tube section ( 26 ) is retained on at least one of the plural ribs ( 56 ) by riveting, screwing, or a like retainer.