Modular external air cooling air conditioner

The present invention provides a modular external air cooling air conditioner which is composed of a box body and provides a data center with a cooling air source. The modular external air cooling airconditioner includes an external air intake damper, a primary filter, an intermediate filter, a return air damper, a mixing chamber, an auxiliary cooling coil, a windmill group, an evaporative cooling device, a bypass damper, a cold air damper, a return hot air damper, a hot air chamber, an exhaust windmill, an exhaust damper and the like. The modular external air cooling air conditioner is provided with open all-external air cooling, closed indirect external air cooling and hybrid cooling functions, and takes external air natural cooling as the principal thing. An cold water machine providescold water to cool the auxiliary cooling coil, which is a subsidary thing, thereby reducing the operation opportunities of the ice water machine to achieve a purpose of saving energy. 本发明提供种模块式外气冷却空调装置，是由箱体组成，提供数据中心冷却风来源，其中包括