The invention discloses a staggered
system of an air conditioner of a subway vehicle with UVC sterilization, which comprises at least two heat exchange systems which are mutually staggered. The heat exchange systems comprise condensers, dry filters, throttling devices, evaporators, compressors, axial flow fans and ventilators, which are sequentially connected end to end and form a
closed loop. The air inlet sides or the air outlet sides of the evaporators are provided with UVC sterilization devices. By adopting the mutually staggered structure of the systems, the problem of overlarge
temperature difference of an outlet of each ventilator when a
machine set runs in a half cold (half warm) mode is solved; and the UVC sterilization devices are installed at the air inlet sides or the air outlet sides of the evaporators, which kills microorganisms, such as
bacteria and the like, on the evaporators and in ventilation air effectively, decreases the air resistance and ensures the heat exchange effect. The UVC sterilization devices do not generate a
pollution source and is unlike to other detergents which cause the condition that passengers contact with dangerous chemical substances or toxic smog to cause the injury of a
human body. The invention can be suitable for the
air conditioning units of various subway vehicles and has very extensive market prospect.