| 摘要 |
PROBLEM TO BE SOLVED: To surely supply air ions of a prescribed concentration or more. SOLUTION: This air ion supply device 1 disposed in a central air supply device 11, having an air ion generator 21 for including negative ions, positive ions or both ions in the air taken from the external of the central air supply device 11, and distributing the air ion generated by the air ion generator 21 to an air ion supply destination through an air duct 31, includes an ion counter 41 disposed in the air duct 31 disposed at the downstream of the air ion generator 21 and detecting the concentration of air ions passing in the air duct 31, and a control means 61 for controlling the generation of air ions by the air ion generator 21 so that the concentration of the air ion detected by the ion counter 41 keeps a prescribed value or more. COPYRIGHT: (C)2011,JPO&INPIT
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