正壓防護服用供氣背包設計及其數(shù)值模擬與實驗

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中圖分類號：TP202 DOI：10.3969/j.issn.1004-132X.2025.06.023 開放科學（資源服務）標識碼（OSID）：

Design and Numerical Simulation and Experiments of Gas Supply Backpacks for Positive Pressure Protective Clothing

HOU Yulei1 LI Ximeng1SUO Huai2LI YuelZENG Daxing' * 1.School of Mechanical Engineering，Yanshan University，Qinhuangdao，Hebei， 2.Qinhuangdao Gaha Medical Electronic Instrument Co.，Ltd.，Qinhuangdao，Hebei， 3.School of Mechanical Engineering，Dongguan University of Technology，Dongguan， Guangdong，

Abstract：At present，the function of positive pressure protective clothing is relatively single，the high internal temperature and difficult pressure control resulted in low safety and comfort. Therefore， a supporting device integrating supply/exhaust， filtration and cooling functions was proposed. The data required to maintain a slightly positive pressure state within the protective clothing was tested，and the structure of the air-supply backpack was designed in modules. A heat transfer analysis was conducted on the semiconductor refrigeration module，and a simulation model was established to analyze the impacts of profile dimensions on refrigeration performance based on CFD （computational fluid dynamics）. The parameters of temperature and pressure were stabilized by fuzzy PID control，the transfer function was solved，the controller was designed and verified by Simulink simulation. The FLUENT simulation model of micro positive pressure protective clothing was built to analyze the distribution law of flow field and temperature field in protective clothing and the influences of air supply temperature. The prototype of air supply backpacks was developed and the temperature and humidity of protective clothing were tested. The results show that the air supply backpacks may dehumidify to normal ambient humidity within 3O s and reduce 5°C compared with room temperature within 100s

Key words： positive pressure protective clothing； gas supply backpack； semiconductor refrigera-tion;FLUENT simulation; temperature and humidity testing

0 引言

防護服是各種污染環(huán)境中進行檢測、救援等任務的基本防護裝備，但目前傳染病防控及生化實驗室人員所用防護裝備生理舒適性較差[1]，正壓防護服若在保證用戶安全的同時能夠為其提供潔凈空氣，并持續(xù)排出身體熱量和產生的濁氣，則可有效提高穿戴的舒適性[2]。（剩余17116字）