A cooking appliance is provided. The cooking appliance that may include a catalyst device having a catalyst that allows carbon monoxide to react with oxygen.

A gas cooker and a valve assembly for a gas cooker are provided. The gas cooker may include a case; a top plate that shields an upper surface of the case and on which items to be cooked are seated; a plurality of burners provided inside of the case; an electric valve assembly that controls a gas supply to the plurality of burners; a main pipe connected to the electric valve assembly and that supplies gas; and a plurality of branched pipes, respectively, connected to the electric valve assembly and the plurality of burners. The electric valve assembly may include a main valve connected to the main pipe; a plurality of sub-valves respectively connected to the plurality of branched pipes; and a manifold that connects the main valve and the plurality of sub-valves in parallel and enabling the main valve and the plurality of sub-valves to be consecutively provided and configured in a single assembly form.

A stove core structure of an infrared gas stove is provided, including a bottom cover having a receiving groove, a bottom portion of the receiving groove having a gas through hole for guiding gas into the receiving groove, a guiding plate received in the receiving groove, being elevated, the bottom portion and the guiding plate having a space therebetween, a gap which is arranged around a circumferential side of the guiding plate and for the gas to pass therethrough serves as a main gas flow line. The gas flows through the circumferential and out from the infrared ceramic piece assembled on an opening of the receiving groove so that the gas contacts the air around the infrared ceramic piece fully and is combusted completely so as to prevent monoxide poisoning and waste of gas and to elevate a thermal efficiency.