| 摘要 |
PURPOSE:To get a corrosionproof closed switchboard which can remove noxious gas generated inside and cool inner electric apparatus. CONSTITUTION:An exhaust fan 6A for circulating cooling air, an functional film 4 transmitting circulation air, and a cooling adsorbing bath 3 reserving saturated phosphoric acid solution 13 are provided in a box 1. The saturated phosphoric acid solution 13 cools the cooling air, and adsorbs noxious gas. |
