Patent ID: 7708006
Filing Date: 2010-05-04
Classification: A47J,F23H,F24B,F24C,Y02B

Abstract:
1. An apparatus for a cooktop of a gas stove, comprising: a. an inner hollow shell being a circularly concave wall having a top circumference and a bottom circumference, said inner hollow shell from said bottom circumference having a smaller size extends upwardly and outwardly to said top circumference having a larger size, a plurality of openings serving as air passages penetrate through lower and upper parts of said inner hollow shell, wherein said air passages are more densely distributed onto a lower part of said inner hollow shell, as compared with said air passages which are less densely distributed onto said upper part of said inner hollow shell; b. an outer square wall comprising four identical upward plates, each upward plate having an exterior side, an interior side, a top transverse side and a bottom transverse side, said upward plates are connected to one another to form said square wall, a plurality of openings served as air passages are evenly distributed to penetrate through said each upward plate, an extension projecting upwardly is positioned at said top transverse side of said each upward plate, said extension comprising a top side and first and second upward sides; c. said both inner hollow shell and outer square wall are positioned onto the cooktop of the gas stove, said inner hollow shell surrounds an upper section of a gas burner of the stove, wherein said upper section includes a plurality of gas ports, said outer square wall surrounds said inner hollow shell and supports a cookware; and d. whereby said apparatus increases heating efficiency of flame in cooking, and said extension projecting upwardly is served as a heat shield to prevent heating of a handle of the cookware.