Patent ID: 9084505
Filing Date: 2015-07-21
Classification: A47J

Abstract:
1. An enameled heat-cooker, comprising: a body made of steel material; and a lower enamel layer and an upper enamel layer, which are formed on the body, wherein the upper enamel layer comprises a first enamel layer and a second enamel layer which are formed in a stack manner, and wherein the second enamel layer of the upper enamel layer comprises a non-stick ceramic coating layer formed on an outer surface thereof, wherein the lower enamel layer and the first enamel layer of the upper enamel layer are coated with a glaze which consists of: 70-80 wt % of a mixture comprising 16-42 parts by weight of siliceous stone, 10-32 parts by weight of feldspar, 20-30 parts by weight of borax, 9-15 parts by weight of soda ash, 3-7 parts by weight of fluorite, 3-5 parts by weight of sodium acetate, 0.3-0.5 parts by weight of nickel oxide, and 0.4-0.6 parts by weight of cobalt oxide; and 20-30 wt % of water, and the second enamel layer of the upper enamel layer is coated with a glaze which consists of: 70-80 wt % of a mixture comprising 16-42 parts by weight of siliceous stone, 10-32 parts by weight of feldspar, 20-30 parts by weight of borax, 9-15 parts by weight of soda ash, 3-7 parts by weight of fluorite, 3-5 parts by weight of sodium acetate, 0.3-0.5 parts by weight of nickel oxide, 0.4-0.6 parts by weight of cobalt oxide, and 15-25 parts by weight of activated carbon; and 20-30 wt % of water, wherein the non-stick ceramic coating layer is coated with a ceramic coating composition which comprises 65-83 parts by weight of an inorganic binding agent consisting essentially of 50-70 wt % of a silane compound and 30-50 wt % of a silica sol, 10-19 parts by weight of a functional filler, 5-15 parts by weight of a ceramic powder in which a far infrared ray-radiating material and an anion-emitting material are mixed at a weight ratio of 1:1, and 1-2 parts by weight of a pigment, based on 100 parts by weight of the ceramic coating composition.