초록 ▼

A more uniform heating of a griddle surface of a gas-fired cooking device is provided by a plurality of heating chambers disposed below the griddle surface, with each of the heating chambers heated by at least one naturally fed gas burner. A portion of the hot combustion gases rise into upper zones

A more uniform heating of a griddle surface of a gas-fired cooking device is provided by a plurality of heating chambers disposed below the griddle surface, with each of the heating chambers heated by at least one naturally fed gas burner. A portion of the hot combustion gases rise into upper zones associated with each heating chamber that have relatively low average front-to-back air flow therein. The upper zones have sidewalls and downwardly extending dam walls that cooperate to create the low flow zones beneath the griddle surface. The relatively low flow rates within the low flow zones allow a more uniform layer of hot combustion gases to be formed along the underside of the griddle surface, thereby more evenly delivering heat to the griddle surface. There may be two or more such heating chambers.

대표청구항 ▼

1. A gas-fired cooking device, comprising:a generally planar griddle surface to be heated; a plurality of generally front-to-back heating chambers disposed below said griddle surface, each having a lower zone and an upper zone, said upper zone disposed below said griddle surface and above said lower

1. A gas-fired cooking device, comprising:a generally planar griddle surface to be heated; a plurality of generally front-to-back heating chambers disposed below said griddle surface, each having a lower zone and an upper zone, said upper zone disposed below said griddle surface and above said lower zone; each of said heating chambers heated by at least one respective gas burner, fed by natural draft, generating hot combustion gases in said lower zone, at least a portion of said hot combustion gases flowing from said lower zone to said upper zone; each of said heating chambers having sidewalls and downwardly extending flow-restricting walls that cooperate with said sidewalls to create said upper zone for transiently retaining therein hot combustion gases from said lower zone; said upper zone having relatively slow average front-to-back flow rate therein and said lower zone having relatively faster average front-to-back flow rate therein.