Wall structure and burner as well as system

A burner for a fuel cell system, the burner comprising:

• a wall structure comprising:
• a first wall having elevations, each of said elevations comprising anon-porous first wall portion, said non-porous first wall portion extending continuously, without interruption, said first wall defining a first supply chamber in an installed state on a rear side of the wall structure;
• a second wall having recesses covered or closed with end sections of said elevations, said second wall defining a reaction chamber on a front side of the wall structure in an installed state, wherein:
• a second supply chamber is formed between said first wall and said non-porous portion first wall portion of each of said elevations,
• said non-porous first wall portion of each of said elevations define at least a portion of said first supply chamber,
• communication between said first supply chamber and said second supply chamber is blocked via at least said non-porous first wall portion of each of said elevations,
• said second wall and said first wall has, in said end sections and in an area of said recesses, first openings connecting said first supply chamber to said reaction chamber in the installed state,
• said second wall has second openings connecting said second supply chamber to said reaction chamber in the installed state,
• said first openings are arranged in a plurality of linear first rows, which extend in parallel to a longitudinal direction,
• said second openings are arranged in a plurality of linear second rows, which extend in parallel to the longitudinal direction and which are arranged in a transverse direction, between two adjacent first rows, and
• at least one of said elevations and said end sections is designed such that at least one second opening is arranged within the respective first row between two adjacent first openings.

A motor vehicle burner system, comprising:

• a burner with a wall structure comprising:
• a first wall having elevations, each of said elevations extending continuously, without interruption, said first wall defining a first supply chamber in an installed state on a rear side of the wall structure, at least one of said elevations defining at least a portion of said first supply chamber;
• a second wall having recesses covered or closed with end sections of said elevations, said second wall defining a reaction chamber on a front side of the wall structure in an installed state, wherein:
• a second supply chamber is defined between said first wall and at least one of said elevations,
• said at least one of said elevations defines a non-porous barrier structure,
• communication between said first supply chamber and said second supply chamber is prevented via at least said non-porous barrier structure;
• said second wall and said first wall has, in said end sections and in an area of said recesses, first openings connecting said first supply chamber to said reaction chamber in the installed state,
• said second wall has second openings connecting said second supply chamber to said reaction chamber in the installed state,
• said first openings are arranged in a plurality of linear first rows, which extend in parallel to a longitudinal direction,
• said second openings are arranged in a plurality of linear second rows, which extend in parallel to the longitudinal direction and which are arranged in a transverse direction, between two adjacent first rows, and
• at least one of said elevations and said end sections is designed such that at least one second opening is arranged within the respective first row between two adjacent first openings;
• and
• a device connected to said burner, said device including at least one of:
• a fuel cell for generating electric current from anode gas and cathode gas,
• a reformer for generating anode gas from fuel and oxidant;
• and
• a hydrogen tank, especially of a vehicle operated with hydrogen, for providing anode gas.