Aiming at the problem of noise pollution generated during the operation of the negative pressure adsorption and disinfection equipment in the dental treatment environment,this paper analyzed the sources of noise by studying the structur-al components and operational principles of existing negative pressure adsorption and disinfection equipment.Furthermore,the pneumatic noise in the adsorption pipeline was analyzed by using the non-equilibrium wall RNG k-ε turbulence model with the SIMPLEC algorithm based on Ansys Fluent fluid dynamics finite element analysis software.According to the analysis results,a structural optimization scheme was proposed.The feasibility of the scheme was validated through comparison of the flow field pressure,velocity cloud diagram,and average noise intensity of the adsorption pipeline before and after optimiza-tion.The experimental results indicated that,by adopting a smooth transition structure in the adsorption pipeline,the pneu-matic noise was effectively reduced,thereby enhancing the comfort degree of patients.
关键词
负压吸附消杀设备/气动噪声/吸附管道/Fluent/平滑过渡
Key words
negative pressure adsorption and disinfection equipment/pneumatic noise/adsorption pipeline/Fluent/smooth transition
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