New and old microwave oven check list
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Old type
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Disadvantage
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New design
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Advantage
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Transformer voltage variation
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The circuit is complex, the maintenance is inconvenient, the failure rate is high, and the microwave emission efficiency is low
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Variable pressure of oil cooled power supply
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20%The structure is simple, easy to repair, not easy to fail, and the microwave emission efficiency is increased by 20%
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Straight in waveguide
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The microwave is easily reflected back to the magnetron, causing damage to the magnetron
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A water loaded ring device is added to the waveguide
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Effectively absorbs the reflected microwave to avoid damage to the magnetron
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Waveguide tube homemade
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The size accuracy is not enough, and it has some influence on the microwave efficiency.
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Waveguide tube procurement with professional manufacturers
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more accuracy, more use of microwave conduction
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The cavity material is made of ordinary stainless steel
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Microwave absorption is easy to absorb, and it affects microwave efficiency
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The use of customized plate for the material of the cavity
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It is not easy to absorb microwave and improve the microwave efficiency
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Simple cavity structure
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Microwave can not produce effective resonance in the cavity, which causes the wave to offset each other and reduces the microwave efficiency.
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Design of the cavity according to the microwave emission law
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The geometric design size is more beneficial to increase the number of resonant modes and to ensure a good match between the furnace cavity and the magnetron
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Cavity waveguide layout
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Short circuit ring + graphite resistance microwave
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Unable to effectively stop the microwave leakage of the import and export
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Import and export by short circuit ring + multi Zubo + SiC microwave barrier
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Effectively blocking the microwave leakage of import and export
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Metal mesh bar + asbestos strip is used in door cover leakage protection device
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Microwave leakage prevention is not very ideal
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Leak proof device for door cover using high waterfall silicone strip coated wire and wave retaining device
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The effect of anti microwave leakage is obvious
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35-50%Overall microwave efficiency 35-50%
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Microwave loss too much, waste of energy
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The overall microwave efficiency is 1.5 times higher than that on the original basis
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High utilization rate, more energy saving, increase production efficiency
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