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