Microwave oven

Abstract

A microwave oven is adapted to radiating mutual reverse-phase wave to make wave guide tube impedance change reach to minimum in response to food loading variation, so then it can keep microwave outputting in constant value regardless of food loading quantity much or less, simultaneously it makes electric field in cavity to keep constant.

Description

[0001] This application is a divisional application of an invention patent application whose title is "microwave oven", application number is 99101257.7, the application date is January 26, 1999, and the applicant is Samsung Electronics Co., Ltd. technical field [0002] The present invention relates to a microwave oven, and more particularly to a microwave oven adapted to radiate microwaves in opposite phases to each other to minimize the change in impedance of a waveguide in response to changes in food load, thereby maintaining the microwave at a constant rate regardless of the amount of food load. value output while keeping the distribution of the electric field in the cavity constant. Background technique [0003] Generally, a microwave oven is used to radiate microwaves generated by magnetron vibration into the cavity through a waveguide, so as to heat and cook food placed in a predetermined position in the cavity through dielectric heating. [0004] figure 1 is a sche...

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Problems solved by technology

[0031] However, there is a problem in the conventional two-way microwave oven thus constructed that the output waveguide is long and thick, making it difficult to accommodate electronic components, and the impedance of the waveguide 19 is often changed according to the cavity 17, so once the size of the cavity 17 changes , the size and position of the upper and lower radiation holes 21a and 21b are adjusted and redesigned

[0032] In addition, there is another problem that the microwaves in the cavity 17 radiate into the cavity in different phases, and the electric field distribution pattern in the cavity 17 is not integrally formed through the upper and lower radiation holes 21a and 21b, but mainly in the upper and lower parts. form

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