The invention belongs to the technical field of
air conditioning devices, and particularly relates to a central
fresh air purification
system for refrigerating and heating. By arranging an air distribution device,
fresh air can be refrigerated, heated, filtered, purified and deodorized in multiple rooms, the longest air supply distance can reach 30 meters, the
air volume is not attenuated, and centralized control can be achieved. Only one layer of
glass fiber filter and one layer of multifunctional filter are arranged for
fresh air purification and peculiar smell removal, purification indexes can be achieved, the structure of a purification outdoor unit is simplified, the replacement frequency of filter materials is reduced, wind resistance is reduced, and the fresh air
throughput is increased. A wave-shaped white steel
wire mesh primary filter is adopted, so that the filtering area is increased, the filter can be cleaned, and the replacement period is prolonged. A double-layer white steel plate
turbine cover filled with the
foaming agent in the middle is arranged, the water filtering holes are formed in the bottom, and the problem that equipment breaks down due to the influence of cold and warm air is solved. In addition, the
system is rigorous in structure, reasonable in design and suitable for popularization and application to the society.