Connecting structure of semiconductor microwave generator

Abstract

The invention discloses a connecting structure of a semiconductor microwave generator. The connecting structure comprises a resonant cavity, a resonant cavity antenna, a waveguide tube, an antenna, the semiconductor microwave generator and a power interface. Compared with a traditional resonant cavity, a shaft bracket is arranged in the center of the resonant cavity, the thickness of a coupling coil is large, the internal diameter of the resonant cavity is small, high-stability plasma is provided for the coupling coil and a coaxial wire designed through the cavity, the signal-to-noise ratio ofmicrowaves is larger than 2,000, it is shown that fluctuation noise from a microwave source barely exists, the tolerance of the plasma for the change of operating conditions is greatly improved, andthe resonant frequency is improved; and a quartz discharge tube in the resonant cavity is connected with a cooling water inlet and a cooling water outlet, the discharge tube is slightly corroded afterbeing used for 30 d, the peak trailing degree of a sulfur channel is also reduced, thus, the discharge tube does not need to be frequently replaced, the discharge tube only needs to be replaced onceevery month commonly after running continuously, and the service life is effectively prolonged while equipment running is not affected.

Description

technical field [0001] The invention relates to a connection structure of a semiconductor microwave generator, which belongs to the field of microwave ovens for household appliances. Background technique [0002] A microwave oven is a modern cooking stove that heats food with microwaves, which are electromagnetic waves. A microwave oven is composed of a power supply, a magnetron, a control circuit, and a cooking cavity. The power supply provides a high voltage of about 4000 volts to the magnetron. Under the excitation of the power supply, the magnetron continuously generates microwaves, and then couples into the cooking cavity through a waveguide system. , near the entrance of the cooking cavity, there is a rotatable stirrer, because the stirrer is a fan-shaped metal, which can reflect the microwave in all directions after rotating, so it can evenly distribute the microwave energy in the cooking cavity, To heat food, the power range of microwave ovens is generally 500-1000 ...

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Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a semiconductor microwave generator connection structure to solve the problem of the traditional resonant cavity design in the transmission of coupling coils and coaxial wires in the process of microwave signal transmission in the prior art. The plasma in the medium is too unstable, which makes the fluctuation noise of the microwave source large and the resonance frequency is low, which seriously affects the operation of the equipment. When the equipment is used for too long, the discharge tube inside the resonant cavity is easily corroded, which reduces the life of the discharge tube by 20- 30. Therefore, the efficiency of semiconductor microwave generators is also severely reduced, leading to the problem of increased cost of use

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