CBF integrated refrigerant pump free-cooling air conditioner adopts modular integrated design, is suitable for COLO data centers and medium and large data centers of Internet companies with innovative energy-saving and water-saving requirements, fully utilizes outdoor natural cold sources, adopts efficient refrigerant pump- powered heat pipe indirect natural cooling combined with the auxiliary refrigeration technology of inverter compressor. CBF achieves low PUE and zero WUE value, energy saving, no water consumption, small occupation, and cleanliness, which provides more options for medium and large data centers.