隧道式微波解冻设备大开口抑制器的优化设计  

Optimal Design of a Large Opening Suppressor forTunnel Microwave Thawing Equipment

作　　者：周玲君 张慧 谭延君 施亚玲 ZHOU Ling-jun;TAN Yan-jun;ZHANG Hui;SHI Ya-ling(Nanjing Sanle Electronics Group Co.Ltd.,Nanjing 211800,China)

机构地区：[1]南京三乐集团有限公司,江苏南京211800

出　　处：《真空电子技术》2024年第4期86-90,共5页Vacuum Electronics

摘　　要：隧道式微波解冻设备,可以对整体包装的冻肉进行解冻。由于冻肉的包装尺寸比较大(约600 mm×400 mm×200 mm),要求抑制器开口≥210 mm才能保证冻肉顺畅通过设备,电抗式抑制器(混合式抑制器、销钉式抑制器等)在尺寸和抑制效果上不能满足微波泄漏要求(≤5 mW/cm^(2)),所以通常采用电阻性抑制器(全水套式)进行抑制。本文以电阻性和屏蔽式相结合的抑制器作为915 MHz大开口隧道式微波解冻设备的抑制器,通过仿真模拟和结构设计,实现开口高度≥210 mm时,空载状态下,测得水套抑制器外侧端口的微波泄漏最大为0.5 mW/cm^(2),符合微波泄漏标准(GB 5959.62008)的规定(≤5 mW/cm^(2))。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 equipment.Reactive suppressors(hybrid suppressors,pin suppressors,etc.)cannot meet the microwave leakage requirements(≤5 mW/cm^(2))in terms of size and suppression effect,so resistive suppressors(full water jacket type)are usually used.A combination of resistive and shielding suppressor is used as the suppressor for 915MHz large opening tunnel microwave thawing equipment.Through electromagnetic simulation and structural design,the maximum microwave leakage at the outer port of the water jacket suppressor is measured to be 0.5 mW/cm^(2) under no-load conditions when the opening height is≥210 mm,which meets the requirements of the microwave leakage standard(GB 5959.62008)(≤5 mW/cm^(2)).

关 键 词：大开口抑制器 微波泄漏 全水套 

分 类 号：TN015[电子电信—物理电子学]