Feeding arrangement for a microwave oven

Details Feeding arrangement for a microwave oven Feeding arrangement for a microwave oven

1988-02-01

1989-07-18

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

H05B 672

Patent

active

048495921

ABSTRACT:
An arrangement for feeding microwave energy from a microwave source (14) to the oven cavity (10) of a microwave oven comprises an elongated groove-shaped recess (16) in one of the conductive cavity walls (17), into which recess (16) microwave energy is fed at a centrally located feeding point (15). At its open side the recess (16) is covered by a rotatable conductive plate (22) arranged very close to the cavity wall (17) so that the recess (16) together with the plate (22) will form a waveguide-like structure. The plate (22) is shaped so that during its rotation time-varying feeding passages between the recess (16) and the oven cavity (10) are formed at both opposite ends of the recess, the passages allowing the transfer of microwave energy from the recess (16) to the cavity (10). These measures result in a very simple and space-saving arrangement of the "dual feed" type.

REFERENCES:
patent: 3746823 (1973-07-01), Whiteley
patent: 4342896 (1982-08-01), Teich
patent: 4343976 (1982-08-01), Nasretdin et al.
patent: 4430539 (1984-02-01), Suzuki
patent: 4496814 (1985-01-01), Fitzmayer
patent: 4580023 (1986-04-01), Simpson
patent: 4695693 (1987-09-01), Staats et al.

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