Compressed-air central air conditioning device

The utility model discloses a compressed-air central air conditioning device. The central air conditioning device comprises an absorptive refrigerator, and is characterized in that the device also includes an air compressor, a cooler, an air-water separator, a filter and a relief valve, wherein the air outlet of the air compressor is connected with the cooler through the generator of the absorptive refrigerator via a pipe; the air outlet of the cooler is connected with the air inlet of the air-water separator via a pipe; and the air outlet of the air-water separator is connected with the filter and the relief valve sequentially through the evaporator of the absorptive refrigerator via pipes. The central air conditioning device has the advantages of compact structure, small assembly space, low construction cost and energy loss, and can supply fresh air without generating bacteria and hiding insects and mice.