| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ventilation fan attached to a window of simultaneous air supply and exhaust type capable of mitigating reduction of a window area and the occurrence of noise. <P>SOLUTION: This ventilation fan is provided with a main body 5 in which an indoor side air supply port 1, an indoor side air exhaust port 2, an outdoor side air supply port 3, and an outdoor side air exhaust port 4 are provided and an air blowing means 7 for air supply and an air blowing means 9 for air exhaust are provided inside it and which is installed outdoors 17 and a window frame 12 which is provided with an air supply port 10 for window and an air exhaust port 11 for window and is attached to a window frame 13. The air supply port 10 for window and the indoor side air supply port 1 are mutually connected by an air supply duct 15, and the air exhaust port 11 for window and the indoor side air exhaust port 2 are mutually connected by an air exhaust duct 16 to constitute the ventilation fan for window of simultaneous air supply and exhaust type capable of preventing reduction of window area and the occurrence of noise. <P>COPYRIGHT: (C)2004,JPO |
