Patent ID: 8715877

Claim:
A fuel cell system comprising a residual gas burner, said gas burner comprising: a combustion chamber that is bordered at the inlet end by a supply wall and is bordered at the outlet end by a heat exchanger and is enclosed laterally by a burner wall, wherein the heat exchanger is a cross-current heat exchanger having a primary and a secondary path, wherein the burner exhaust can flow as the primary medium through the primary path of said heat exchanger in a primary direction, and a secondary medium can flow through the secondary path of said heat exchanger, said secondary path linked to the primary path to allow heat transfer, in a secondary direction oriented across the primary direction, wherein the supply wall has a burner zone with oxidizer gas openings for supplying oxidizer gas to the combustion chamber and with combustion gas openings for supplying combustion gas to the combustion chamber, wherein the supply wall has a bypass zone with bypass openings for supplying bypass gas to the combustion chamber, wherein the supply wall has a first end proximate an inlet end of the secondary path of the heat exchanger, and a second end opposite the first end, wherein the bypass zone is arranged exclusively in a section of the supply wall proximate the first end which is allocated to an area of the heat exchanger that is adjacent to the primary path as well as to the secondary path at the inlet end, so that the bypass gas or a bypass gas-burner exhaust gas mixture acts upon this area on the primary end during operation of the burner.