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US 6,662,711 B2Granted
Cooking apparatus
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorKazunori Maeda
Life of this patent
Estimating the term…
Abstract
A protective screen (5) is provided near a peephole part (7) of a door main body (2) and has its heat resisting temperature higher than the heat resisting temperature of a window frame. Even when a material to be cooked ignites, flame hardly goes outside from the peephole part (7). A temperature switch (3) does not need to be provided in a heating chamber (1). Accordingly, the cooking apparatus can be easily designed.
Claims4
A cooking apparatus comprising:
- a heating chamber for housing a material to be cooked;
- a door main body attached to the heating chamber so as to freely open and close;
- a peephole part provided in the door main body to recognize a state of the material to be cooked in the heating chamber;
- a protective screen provided to prevent foreign materials from entering the heating chamber through the peephole part;
- and
- a window frame for fixing the protective screen to the door main body,
- wherein the protective screen has heat resisting temperature higher than that of the window frame and is provided near the peephole part.
4 more elements
A cooking apparatus comprising:
- a heating chamber for housing a material to be cooked;
- a door main body attached to the heating chamber so as to freely open and close;
- a peephole part provided in the door main body to recognize the state of the material to be cooked in the heating chamber;
- a protective screen provided to prevent foreign materials from entering the heating chamber through the peephole part;
- a window frame for fixing the protective screen to the door main body;
- a heating unit for heating the material to be cooked;
- door switches for opening and closing a circuit for supplying electric power to the heating unit;
- a door switch holding unit for holding the door switches to the heating chamber;
- a door switch operating unit attached to the door main body so as to freely slide and
- a heat sensitive part provided in the door switch holding unit,
- wherein when the material to be cooked ignites, the heat sensitive part is deformed more earlier than at least either the protective screen or the window frame to operate the door switches and stop the heating unit.
8 more elements
Dependencies are inferred from the claim text.