| 摘要 |
A ventilating system is provided to prevent air supply ducts and an exhaust duct from crossing each other to form a space between a slab wall of a ceiling and ducts and to reduce space height of a room ceiling. A split chamber(50) is communicated with an upper part of a ventilation unit(40). A partition wall is extended in the split chamber from an upper part to a lower part to divide the split chamber into an air supply chamber and an exhaust chamber. At least two or more air supply ducts(20,25) are connected with the air supply chamber. At least one or more exhaust duct(30) is connected with the exhaust chamber. A plurality of air supply ports are connected with the air supply ducts to supply external air into a room. A plurality of exhaust ports are connected with the exhaust chamber to exhaust polluted air of the room to the outside. The air supply ducts and the exhaust duct are formed not to cross each other in a ceiling to prevent generation of an overlapped part.
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