The existing miniaturized vehicle intelligent fragrance devices in China generally have problems such as small air volume and high noise

resulting in poor user experience.In view of the above problems

firstly

a miniaturized vehicle intelligent fragrance device based on Catia software was designed.Secondly

based on the computational fluid dynamics(CFD)method

the flow field simulation analysis of the vehicle intelligent fragrance device was carried out

and the air volume was optimized by improving the air path and the size of the air outlet.The optimized air volume is 1.2 m3/h

which is 16.7% higher than that before optimization

which verifies the feasibility of the optimization method.Finally

based on Siemens Simcenter Testlab system

the noise reduction of the vehicle intelligent fragrance devices was studied.The scheme of isolating vibration source and adjusting motor subdivision was proposed to reduce noise.The experimental results show that the noise of the whole machine is reduced by 5.61 dB(A)

which verifies the effectiveness of the noise reduction method.The structural design method

air volume optimization method and noise reduction technology scheme provide a strong reference for product development in the field of vehicle electronics.