| 摘要 |
PROBLEM TO BE SOLVED: To obtain cleaning/circulating effects by cleaning and suppling outdoor air and circulating indoor air. SOLUTION: A multi-functional air supply system comprises an air supply fan 15 attached to a duct 5 formed in a wall 3 separating an indoor space 1 and an outdoor space 2 for force-feeding outdoor air (a), a circulating fan 16 for circulating indoor air (b), an outdoor air cleaning filter 17 for cleaning the outdoor air (a) and an indoor air cleaning filter 18 for cleaning the indoor air (b).
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