北京生物醫(yī)學工程

嬰兒輻射保暖臺床面溫度場仿真研究

Simulation study of temperature distribution on mattress for infant radiant warmer

作者：何棟王琪林定余楊海仕胡燕海

單位：寧波大學機械工程與力學學院（浙江寧波315211）<p>寧波戴維醫(yī)療器械股份有限公司（浙江寧波 315712）</p>

關(guān)鍵詞：嬰兒輻射保暖臺；熱輻射；溫度均勻性；數(shù)值模擬；有限元方法；仿真

分類號：R318.01

出版年·卷·期（頁碼）：2019·38·1（22-27）

摘要：

目的通過數(shù)值模擬（numerical simulation）得到床面溫度場結(jié)果，并與試驗比較，探討有限元方法（finite element methods，F(xiàn)EM)應(yīng)用于保暖臺溫度場分析的可行性，從而為使用數(shù)值模擬方法輔助該類產(chǎn)品結(jié)構(gòu)的優(yōu)化設(shè)計提供參考價值。方法本文使用三維軟件SOLIDWORKS建立了當前D公司某型號輻射保暖臺的相關(guān)模型，然后導(dǎo)入ANSYS中，對保暖臺在20℃環(huán)境以及全功率工作狀態(tài)下的床面溫度場進行有限元仿真，獲得了主要測試點的溫度數(shù)值及均勻性的仿真結(jié)果。與此同時，實際采用多通道溫度記錄儀和紅外熱像儀對床面的主要測試點及整體溫度場進行記錄，最后對仿真與試驗數(shù)據(jù)進行誤差分析。結(jié)果使用合理的計算方法得到仿真與試驗測試點的誤差率均在10%以內(nèi)，且溫度場的分布趨勢也基本一致，驗證了該有限元仿真方法有效。結(jié)論該有限元仿真方法所得數(shù)值比較準確，能夠提前預(yù)測輻射溫度場，輔助保暖臺產(chǎn)品結(jié)構(gòu)的優(yōu)化設(shè)計。

Objective To discuss the feasibility of finite element methods(FEM) in thermal analysis of radiant warmer, and to provide reference value for using numerical simulation to assist in optimization and design of products, the simulation of temperature distribution on mattress is compared with experiment.Methods Using three-dimension software SOLIDWORKS a radiation warmer heating device model of D company was built, which was then imported into ANSYS to simulate the mattress distribution under the conditions of 20℃ and full power operation. Thetemperature values and uniformity of main test points were obtained in simulation. Meanwhile, muti-channel temperature recorder and infrared camera were used for experiment to record the values of test points and temperature field. The deviation of simulation and experiment was analyzed at last. Results Error rates of test points in simulation and experimentwere all within 10% and the distribution of temperature field was consistent, which proved that FEM analysis was valid. Conclusions FEM obtains accurate numerical values, which can be used to predict the temperature distribution and assist the optimal design of radiant warmer products.

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