Research on the Improvement of Air Conditioning Filter Function Based on TRIZ Method

Abstract

As the COVID-19 pandemic gradually comes under control, railway transportation in various regions is showing signs of recovery. However, new challenges have emerged, such as frequent cases of in-carriage transmission. At the same time, the filtration capacity of the air conditioning systems in China's high-speed rail carriages is insufficient to meet epidemic prevention requirements. Enhancing the filtration capacity of these systems and optimizing the layout of related facilities that affect both filtration efficiency and passenger experience have become critical priorities. This paper focuses on the air conditioning filtration systems of high-speed trains in operation in China, conducting an in-depth investigation into the phenomenon of in-carriage transmission during the COVID-19 pandemic. Based on the function-oriented search in TRIZ theory and the microclimate theory in human factors engineering, the study proposes a feasible design scheme for the mechanism and the layout of air supply and return vents. Using the fishbone diagram tool, the initial scheme is analyzed to identify optimization directions, ultimately resulting in a design and vent layout scheme that largely meets current environmental needs.