| 摘要 |
PURPOSE: A multi ventilation system is provided to exhaust heat and smell during cooking, improve ventilation efficiency and reduce the charge. CONSTITUTION: A multi ventilation system (10) comprises an air supply device (40), air exhausting device (30) and range hood (20). The air supply device makes outer air flow in. The air exhausting device is placed near ceiling or at one side and exhausts air of inside to the outside. The range hood comprises a case (21), connection pipe (23), and upper case (25). The connection pipe has a damper (24) for preventing reverse current.
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