Microwave oven with different phase microwave streams

Details Microwave oven with different phase microwave streams Microwave oven with different phase microwave streams

1997-09-04

1999-08-03

Leung, Philip H.

Electric heating

Microwave heating

Field modification

219748, 219750, 219747, H05B 670

Patent

active

059321318

ABSTRACT:
A microwave oven is disclosed in which the structure of the wave guiding tube is improved such that the variation of the impedance is minimized in spite of the variation of the load of the food, thereby making it possible to maintain the output of the microwave oven at a constant level regardless of the load of the food. The microwaves are divided into a plurality of wave streams, and the wave streams are made to have different phases. The microwave oven includes an input wave guiding tube coupled with a magnetron, for receiving microwaves from the magnetron. A first output wave guiding tube communicates to the input wave guiding tube, for receiving the microwaves from the input wave guiding tube to diffusely irradiate the microwaves into a cavity. A second wave guiding tube communicates to the input wave guiding tube, for converting the microwaves to a phase different from that of the first wave guiding tube to irradiate them into the cavity.

REFERENCES:
patent: 3210511 (1965-10-01), Smith
patent: 4336434 (1982-06-01), Miller
patent: 4446349 (1984-05-01), Smith
patent: 4464554 (1984-08-01), Bakanowski et al.
patent: 4621179 (1986-11-01), Kusunoki et al.
patent: 5237139 (1993-08-01), Berg et al.
patent: 5632921 (1997-05-01), Risman et al.

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