Optimal Design of a Large Opening Suppressor for Tunnel Microwave Thawing Equipment
Tunnel microwave thawing equipment can thaw frozen meat packaged as a whole.Due to the relatively large packaging size of frozen meat(about 600 mm×400 mm×200 mm),the opening height of the suppressor is required to be≥210 mm to ensure smooth passage of frozen meat through the equip-ment.Reactive suppressors(hybrid suppressors,pin suppressors,etc.)cannot meet the microwave leak-age requirements(≤5 mW/cm2)in terms of size and suppression effect,so resistive suppressors(full wa-ter jacket type)are usually used.A combination of resistive and shielding suppressor is used as the sup-pressor for 915 MHz large opening tunnel microwave thawing equipment.Through electromagnetic simula-tion and structural design,the maximum microwave leakage at the outer port of the water jacket suppres-sor is measured to be 0.5 mW/cm2 under no-load conditions when the opening height is≥210 mm,which meets the requirements of the microwave leakage standard(GB 5959.6 2008)(≤5 mW/cm2).
Large opening suppressorMicrowave leakageFull water jacket
万方数据
维普
