Experimental analysis and optimization of structural parameters of cylindrical smoke detectors with covers based on the response surface method

The time for smoke gas to reach a smoke detector would depend on its structural characteristics. However, previous studies have neglected to explore this issue. In this paper, three structural variables of a cylindrical smoke detector with a cover are chosen, and the response surface method is used to carry out the experimental design. Furthermore, the incidence point velocity and center point velocity are calculated using the computational fluid dynamics simulation, and the alarm time is obtained using a homemade device. The three parameters that influence the outcomes are then examined to obtain empirical formulas and the best solutions. Comparatively, we observe that the smoke ingress effect is most significantly influenced by the top cover height. After optimization, the incidence point velocity is increased by 115.94 %, the center point velocity is increased by 119.64 %, the alarm time is reduced by 68.57 %, and the gas flowability performance is noticeably improved.