Absorber device for microwave leakage

Details Absorber device for microwave leakage Absorber device for microwave leakage

1985-12-24

1987-08-25

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

174 35GC, H05B 676

Patent

active

046894608

ABSTRACT:
A microwave absorber device for a microwave heater having a chamber for cooking with an opening, and a door for closing the opening with a small gap which is a leakage path between the door and the wall of the chamber. The door is provided with a choke cavity at the peripheral portions of the same, the choke cavity having an approximate 1/4 wavelength of length, and an entrance facing the leakage path. The choke cavity is provided with wave absorber which includes ferrite, and/or carbon, at an edge of the entrance or an edge of the cavity. The wave absorber closes also the leakage path. The entrance itself is sealed by dielectric material.

REFERENCES:
patent: 3633564 (1972-01-01), Togashi et al.
patent: 3742176 (1973-06-01), Ishino et al.
patent: 3809843 (1974-05-01), Takayama
patent: 4046983 (1977-09-01), Ishino et al.
patent: 4347420 (1982-08-01), Ikeda et al.
patent: 4475023 (1984-10-01), Iwabuchi et al.
patent: 4523069 (1985-06-01), Staats
patent: 4525614 (1985-06-01), Ishino et al.

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