Patent ID: 8955508
Filing Date: 2015-02-17
Classification: C03C,F24C,Y10T

Abstract:
1. A cooker comprising: a main body; a cavity disposed in the main body to form a cooking chamber in which food is cooked, the cavity comprising a plurality of walls; a heater disposed in the cavity to provide heat for cooking food inside the cooking chamber; a door that selectively opens and closes the cooking chamber; a ground coating layer disposed on at least one of the walls, the ground coating layer comprising ceramic components that constitute an enamel coating layer and defining a first thickness; and a cover coating layer disposed on an outer surface of the ground coating layer, the cover coating layer comprising phosphorus oxide components and defining a second thickness, wherein the first thickness is smaller than the second thickness; and wherein the cover coating layer includes 27.1-35.3 wt % P205, 14.6-28.4 wt % Al2O3, 12.8-20.3 wt % ZrO2, 18.7-28.8 wt % mother glass constitution components, and 17.2-25.4 wt % ceramic fillers; and wherein the ceramic fillers comprise at least one of ZrSiO4, ZrO2.SiO2, eucryptite, and 2MgO.2Al2O3.5SiO2.