| 摘要 |
PROBLEM TO BE SOLVED: To provide an exhaust device capable of discharging air by a simple structure without causing reduction in air-conditioning efficiency due to ventilation inside a room. SOLUTION: This local exhaust device is provided with an exhaust passage 1 arranged above an exhaust objective space S and led to the outside, an exhaust fan 2 arranged in the exhaust passage 1, an air discharge means 3 discharging air from the lower side of the exhaust objective space S to the hood 1a side of the exhaust passage 1 toward the exhaust objective space S, and an air supply passage 4 extending from a non-air conditioned space B in the outdoors to the air discharge means 3. Gas generated in the exhaust objective space S is discharged to the outdoors from the exhaust passage 1 by a push/pull effect based on driving of the exhaust fan 2 and the air discharge means 3, while the air in the peripheral air-conditioned space O is not discharged. COPYRIGHT: (C)2004,JPO
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