Patent ID: 8669498

Claim:
A cooker, comprising: a cavity including a cooking chamber, the cavity having an opening; a door that selectively opens and closes the cooking chamber; a first heating source that provides heat for cooking food inside the cooking chamber; an enamel coating layer positioned on an inner surface of the cooking chamber and including a phosphorus pentoxide (P 2 O 5 ) ingredient; a cleaning apparatus that supplies cleaning water to an inside of the cooking chamber; a control unit that controls operations of the heating sources and the cleaning apparatus; and a second heating source configured to heat the cleaning water supplied to the inside of the cooking chamber, wherein the cleaning apparatus comprises: a water tank that stores cleaning water; and a supplying unit that supplies the cleaning water to the inside of the cooking chamber, the supplying unit being movable through the opening of the cavity; a conduit coupled to the supplying unit to guide the cleaning water from the water tank to the supplying unit; a first cover disposed within the cooking chamber to shield the opening when the supplying unit is positioned at an outside of the cooking chamber; and a second cover disposed at the outside of the cooking chamber to shield the opening when the supplying unit is positioned within the cooking chamber.