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微波紅外振動(dòng)床協(xié)同干燥機(jī)設(shè)計(jì)與試驗(yàn)
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國(guó)家自然科學(xué)基金項(xiàng)目(31901823)和中國(guó)農(nóng)業(yè)大學(xué)基本科研業(yè)務(wù)費(fèi)專項(xiàng)資金項(xiàng)目(2021TC041)


Design and Experiment of Microwave Infrared Vibrating-bed Dryer
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    摘要:

    針對(duì)農(nóng)產(chǎn)品加工中微波干燥不均和紅外干燥穿透能力有限等技術(shù)問題,,研制了微波紅外振動(dòng)床協(xié)同干燥(MIVBD)設(shè)備,。在結(jié)構(gòu)設(shè)計(jì)上,通過COMSOL仿真分析諧振腔場(chǎng)強(qiáng)分布的均勻性,,并優(yōu)化了微波源饋波口布置,。設(shè)備通過多孔面板將紅外源與微波諧振腔隔離,在保證紅外熱量高效輻射的同時(shí),,確保微波,、紅外二者互不干擾。振動(dòng)系統(tǒng)采用聚苯硫醚等諧振腔內(nèi)部材料和鋼結(jié)構(gòu)外部材料制成,,通過振動(dòng)電機(jī)和橡膠彈簧帶動(dòng)物料振動(dòng),。以高含水率生姜片為典型物料,對(duì)MIVBD設(shè)備的干燥效率,、均勻性和色澤等相關(guān)品質(zhì)進(jìn)行試驗(yàn)研究,,當(dāng)物料溫度超過上限溫度時(shí)微波和紅外停止工作,結(jié)果發(fā)現(xiàn),,微波紅外振動(dòng)干燥比微波紅外干燥時(shí)間縮短了14.29%,,微波紅外振動(dòng)干燥時(shí)溫度不均勻系數(shù)最小(2.28%),,并且微波紅外振動(dòng)干燥顯著降低了干燥能耗,,改善了相關(guān)品質(zhì)。

    Abstract:

    In order to solve the problems of uneven drying during microwave drying and limited penetration during infrared drying for agricultural products, a microwave infrared vibrating-bed dryer (MIVBD) was developed. In the structure design, the uniformity of the microwave distribution in the resonator was analyzed by COMSOL, and the arrangement of the microwave source was optimized. The infrared source was isolated from the microwave resonator through the porous panel, which ensured the high efficiency of infrared heat radiation and the non-interference of microwave and infrared. The vibration system was made from polyphenylene sulfide (PPS) and other materials inside the resonant cavity, steel structure materials outside the resonant cavity, and agricultural products vibrate through vibration motor and rubber spring. Fresh ginger slices were selected as experimental materials. The drying efficiency, uniformity, and color of MIVBD were studied. When the material temperature exceeded 60℃, microwave and infrared stopped working. The results showed that the drying efficiency of MIVBD was improved by 14.29%. Infrared radiation and vibration can significantly improve the uniformity of material surface temperature distribution. The temperature uniformity of MIVBD was the best, and its temperature nonuniformity coefficient was 2.28%. The MIVBD significantly reduced the drying energy consumption and improved the related quality. The research result can provide theoretical basis and technical support for the application of microwave and infrared radiation in fruit and vegetable drying.

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宿佃斌,曾詩(shī)雨,呂為喬,李棟,趙丹,趙東林.微波紅外振動(dòng)床協(xié)同干燥機(jī)設(shè)計(jì)與試驗(yàn)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2022,53(8):423-434. SU Dianbin, ZENG Shiyu, Lü Weiqiao, LI Dong, ZHAO Dan, ZHAO Donglin. Design and Experiment of Microwave Infrared Vibrating-bed Dryer[J]. Transactions of the Chinese Society for Agricultural Machinery,2022,53(8):423-434.

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  • 收稿日期:2021-09-03
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  • 在線發(fā)布日期: 2021-10-26
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