Cooking apparatus utilizing gaseous fuel

A cooking apparatus comprising:

• a plurality of chamber walls defining a chamber, the chamber including a plurality of chamber corners, a chamber bottom end, and a chamber top end;
• and
• a gas burner including a burner tube located nearer the chamber bottom end than the chamber top end, the burner tube including:
• a plurality of tube runs, each tube run including a run length extending substantially parallel with a respective chamber wall, a majority of the run length including a closed wall section of the burner tube;
• and
• a plurality of tube bends, each tube bend disposed between two respective tube runs and including a porous wall section of the burner tube;
• and
• a plurality of outer heat shields, each outer heat shield disposed between a tube bend and a respective chamber corner.

A cooking apparatus comprising:

• a plurality of chamber walls defining a chamber, the chamber including a plurality of chamber corners, a chamber bottom end, and a chamber top end;
• a gas burner including a burner tube located nearer the chamber bottom end than the chamber top end, the burner tube including:
• a plurality of tube runs, each tube run including a run length extending substantially parallel with a respective chamber wall;
• and
• a plurality of tube bends, each tube bend disposed between two respective tube runs;
• a blocking plate disposed in the chamber nearer the chamber bottom end than the chamber top end, the blocking plate covering a majority of the run length of each tube run, the blocking plate and the chamber walls defining a plurality of corner openings, each corner opening defining a corner flow passageway for heat emitted from the burner tube;
• a grease collector disposed in the chamber nearer the chamber bottom end than the chamber top end, the grease collector defining the blocking plate;
• and
• a plurality of flame director plates, each flame director plate disposed over a respective corner opening.