Colin Bates rooftop air conditioning unit is a large and medium-sized integrated air conditioning equipment with built-in cooling source and air cooling. The unit structure and body are designed to be sun proof and rainstorm proof, and can be installed on the roof or outdoor platform. According to the specific requirements of the usage environment, explosion-proof, anti-corrosion and other treatment measures can be selected. The unit comes with a built-in cold source, which is an air conditioning unit composed of a compressed air-cooled condenser and a refrigerant expansion direct evaporator. It does not require a cooling water and cooling water system, saving cooling towers, cooling water pumps, refrigeration water pumps, corresponding pipelines, and some electronic control devices. It is widely used in large and medium-sized factories and workshops where it is inconvenient to install water systems and water resources are scarce. It can effectively adjust indoor environment parameters such as temperature, humidity, and cleanliness.