Patent ID: 7721727
Filing Date: 2010-05-25
Classification: F23D,F24C,Y02B

Abstract:
1. A cooking stove comprising: a burner that heats a cooking container from below; and a ring plate being a trivet ring arranged around the burner, said trivet ring having a front plate and an opposed back plate spaced from said front plate, wherein respective edges of said plates are joined to one another to form a space for reducing heat transfer from said front plate to said back plate; wherein the respective edges of said front plate and said back plate are sealed to one another to form a vacuum heat insulation space, a plurality of trivet claws arranged on an upper surface of the trivet ring, each of the trivet claws being formed in a spiral shape extending from an inner circumferential end thereof to an outer circumferential end thereof when viewed from above and being formed of an arcuate plate-like wall arranged on the upper surface of the trivet ring from the inner circumferential end to the outer circumferential end; and a current plate arranged on the trivet ring, the current plate circumscribing the trivet claws such that each of the trivet claws is arranged on an inner circumferential surface of the current plate, and such that each of the trivet claws extends higher above the trivet ring than the entirety of the current plate, wherein a ring shaped combustion gas route is formed between the upper surface of the ring plate and a bottom surface of the cooking container, wherein an exhaust guide is arranged in the combustion gas route that makes the combustion gas of the burner flow along the bottom surface of the cooking container in a spiral circulation shape toward the outer circumferential direction, wherein an upper surface of each trivet claw is for supporting the bottom surface of the cooking container as well as for functioning as the exhaust guide, and wherein when the cooking container is placed thereon, the upper surface of each trivet claw spirally contacts with the bottom surface of the cooking container, and the ring shaped combustion gas route is sectionally formed in a spiral gas route surrounded by the upper surface of the trivet ring, the trivet claws, the current plate, and the bottom surface of the cooking container.