Microwave oven equipped with a microwave generating apparatus de

Details Microwave oven equipped with a microwave generating apparatus de Microwave oven equipped with a microwave generating apparatus de

1998-06-30

1998-12-15

Leung, Philip H.

Electric heating

Microwave heating

With specific generator

315 511, 315 537, 315 3963, 313299, 331184, H05B 664, H01J 2502

Patent

active

058500740

ABSTRACT:
A microwave oven includes a microwave generating apparatus having a cathode, a first grid for controlling the flow of electrons from the cathode. The first grid has holes for converting electrons from the cathode to the electron beams and a metal film for reducing emission of secondary electron from the first grid. The cathode, the first grid and the choke structure define an input cavity functioning as a resonant circuit. The microwave generating apparatus further includes a resistor for inducing a bias voltage on the first grid, a second grid having holes through which the electron beams passing through holes of the first grid pass, an anode for receiving the electrons passing through the holes of the second grid, and a driving voltage source for providing a driving voltage to the cathode and the anode. The anode is provided with a plurality of protuberances for reducing emission of secondary electron from the anode. The second grid and the anode define an output cavity for generating a microwave. The output cavity is electrically insulated from the input cavity.

REFERENCES:
patent: 2529668 (1950-11-01), Wang
patent: 3805111 (1974-04-01), Ryabinin et al.
patent: 5233269 (1993-08-01), Lien
patent: 5541391 (1996-07-01), Seong

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