Protective structure in microwave oven solid-state source and magnetron common heating system
A technology of heating system and protective structure, applied in microwave heating, lighting and heating equipment, electric/magnetic/electromagnetic heating and other directions, can solve the problems of solid-state source damage, insufficient heating depth, inability to apply, etc., to reduce energy loss, Increased safety and efficiency, improved penetration and lack of uniformity
Pending Publication Date: 2019-10-22
SHENZHEN BRAVO RADIO FREQUENCY TECH CO LTD
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Problems solved by technology
[0002] Traditional microwave heating adopts 2.45GHz magnetic control technology, which is mature and low in cost, but has shortcomings such as insufficient heating depth, poor uniformity, and uncontrollable output power; 900MHz frequency is relatively low and has good penetration, but the traditional 900MHz magnetic control design is bulky , the design size of the waveguide transmission port cannot be applied to a miniaturized cavity, and in recent years, the 900MHz microwave source designed with a solid-state source is small in size, and the resonant antenna feed-in method makes it possible for dual-frequency coexistence to be heated in a small cavity
[0003] However, when dual frequencies coexist in the same cavity, there will be a problem of mutual coupling of microwave energy. Because of the waveguide transmission characteristics of 2.45GHz, the low-frequency 900MHz microwave will be inhibited from entering the waveguide port, but it is difficult for the 900MHz antenna to completely isolate the high-frequency 2.45GHz. There is a great risk that high-frequency 2.45GHz microwaves return through the antenna and cause damage to 900MHz solid-state sources
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[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0024] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.
[0025] In addition, if there are descriptions involving "first", "second" and ...
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The invention discloses a protective structure in a microwave oven solid-state source and magnetron common heating system. A microwave oven comprises a double-source microwave heating cavity body, oneend of the double-source microwave heating cavity body is provided with a microwave waveguide exciter, a magnetron microwave source connected with the microwave waveguide exciter and a waveguide feedback inlet, and the other end of the double-source microwave heating cavity body is provided with a solid-state microwave source power amplifier and an electrically-modulated radio frequency coaxial antenna connected with the solid-state microwave source power amplifier. Compared with the prior art, the 900-MHz solid-state source power amplifier can be effectively protected, 2.45-GHz microwave energy loss is reduced, and the safety and the efficiency of the double-source microwave heating system are greatly improved.
Description
technical field [0001] The invention relates to the technical field of microwave oven heating, in particular to a protective structure in a common heating system of a solid-state source of a microwave oven and a magnetron. Background technique [0002] Traditional microwave heating adopts 2.45GHz magnetic control technology, which is mature and low in cost, but has shortcomings such as insufficient heating depth, poor uniformity, and uncontrollable output power; 900MHz frequency is relatively low and has good penetration, but the traditional 900MHz magnetic control design is bulky , The design size of the waveguide transmission port cannot be applied to a miniaturized cavity. In recent years, the 900MHz microwave source designed with a solid-state source is small in size, and the resonant antenna feed-in method makes it possible for dual-frequency coexistence to be heated in a small cavity. [0003] However, when dual frequencies coexist in the same cavity, there will be a p...
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Patent Timeline
Login to View More IPC IPC(8): F24C7/02F24C7/06F24C15/00H05B6/72H05B6/70H05B6/66
CPCH05B6/72H05B6/707H05B6/666H05B2206/04
Inventor 彭高
Owner SHENZHEN BRAVO RADIO FREQUENCY TECH CO LTD