Patent ID: 8637793

Claim:
An electric oven, comprising: an outer case having an external air inlet, the external air inlet formed at a side portion of the outer case; a cavity enclosed by the outer case and defining a cooking chamber therein, the cavity including: an inner cavity comprising an upper plate, a bottom plate, side plates and a back plate to define top, bottom, both side and rear surfaces of the cooking chamber; and an outer cavity enclosing the inner cavity and spaced apart from the inner cavity, the outer cavity comprising an upper plate, a bottom plate, side plates and a back plate to define top, bottom, both side and rear surfaces thereof; a supporting plate horizontally disposed between the upper plate of the outer cavity and the outer case, such that a first passage is established below the supporting plate in a front-to-rear direction of the oven and a second passage is established above the supporting plate, wherein a communication opening is formed at a side edge portion of the supporting plate; a door for opening or closing a frontal opening of the cavity, the door including a front glass, an inner glass and a door cooling passage between the front glass and the inner glass, the door cooling passage having an air inlet formed in a bottom end of the door and an air outlet formed in an upper end of the door, the door cooling passage configured to communicate with the first passage; at least one electrical component placed on an upper surface of the supporting plate; a control panel mounted on front end portions of the cavity and the outer case; and a dividing member for isolating the second passage from the first passage, wherein the dividing member is configured to extend upwardly from a rear end of the supporting plate, such that the second passage extends in a lateral direction of the oven, wherein the communication opening is formed on an opposite side to the external air inlet of the outer case, such that external air flows in the lateral direction from the external air inlet to the communication opening along the second passage, and wherein a third passage is formed between the back plate of the outer cavity and the back plate of the inner cavity.