Fujimak Corporation

Hideki Tsukamoto

Hiroshi Matsuo

Akio Ueoka

A heating apparatus of the present invention relates to a high speed oven having a turntable mechanism for heating food products by utilizing a combination of jet impingement of heated air (a jet impingement) and microwaves or either of them, the apparatus comprising a safety device and an exhaust device. This invention has the following configurations: a turntable mechanism for enabling the turntable to be preferably rotated, the turntable including openings at the central part thereof so that the heated air and microwaves can pass therethrough; a limiter mechanism for removing overload imposed on the turntable by utilizing only a mechanical operation; an apparatus provided with scarfed areas on upper and lower boards of the heating chamber so that the food products can be baked uniformly even when utilizing a jet impingement technique; a fan guard comprising a switch activation device for activating a switch for allowing a generation of the heated air, which switch is positioned at the outside of the heating chamber, only when the fan guard is fixed to the heating chamber; a heating apparatus which simplifies operations for connecting exhaust tubes upon a number of apparatuses being stacked on each other; and a turntable driving mechanism for preventing contaminants from flowing into a gap between a connecting shaft and an axis receptor.

High speed oven using a jet of heated air

A heating apparatus includes a central support axle positioned within a heating chamber of the heating apparatus. The heating apparatus provides both hot-air heating and micro-wave heating. A turntable has a central portion supported by the central support axle so that the turntable is rotated around the central support axle. A driving source is positioned at an upper side of the heating chamber for generating a rotating torque, and a connecting shaft for transmitting the rotating torque generated by the driving source to the turntable is provided in the heating chamber. The turntable has an entirely flat shaped section including a plane on which food products to be heated are mounted. A central portion of the flat shaped section is defined at a concave which is downwardly recessed into the plane and arranged to be fixed to and supported by the central support axis. The plane and the concave of said flat shaped section are provided with a plurality of openings so that hot air and micro-waves can be passed therethrough. The driving axle is engaged, at a lower end portion thereof, with an outer periphery of the flat shaped section to transmit the rotating torque to the flat shaped section.

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Tokyo, Japan

Hideki Tsukamoto