High frequency cooking device having electromagnetic induction h

Details High frequency cooking device having electromagnetic induction h High frequency cooking device having electromagnetic induction h

1991-06-11

1993-01-05

Reynolds, Bruce A.

Electric heating

Metal heating

Of cylinders

219 1055B, 219 1055M, 219 1055R, 219 10493, 219 1075, 219 1079, H05B 664

Patent

active

051773333

ABSTRACT:
A cooking heater comprises a housing provided thereon with an operation control panel including a plurality of function keys, a cooking room disposed in the housing, the cooking room having a bottom formed by a non-magnetic metal mesh having a size in a range from 10 mesh to 25 mesh, a turntable disposed within the heating room for containing food to be cooked, magnetron for generating microwaves, a wave guide for guiding said microwaves into the cooking room, an electromagnetic induction coil disposed below the non-magnetic metal mesh, and means for selectively coupling electric power to the magnetron or the induction coil. The non-magnetic metal mesh may be sandwiched between two layers of dielectric material to form a laminated structure to thereby absorb any thermal deformation of the mesh. The turntable is preferbly formed of dielectric material. The cooking heater may further comprise a warning means for setting a preheating time and producing an audible warning signal when the preheating time elapses, and the funtion keys may include a preheating key such that the warning means is actuated by depression of the preheating key.

REFERENCES:
patent: 2648514 (1953-08-01), Rosier et al.
patent: 3808391 (1974-04-01), Graff et al.
patent: 4481396 (1984-11-01), Matsubayashi et al.
patent: 4984512 (1991-01-01), Takahashi et al.
patent: 5045659 (1991-09-01), Wolfe et al.

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