| 摘要 |
PROBLEM TO BE SOLVED: To provide a low-cost pipe fan having superior workability and maintenance to other types of ventilation fans, having a high static pressure and low noise, adopting a thin-type panel and a wind-pressure type shutter, and exchangeable of strong/weak notches. SOLUTION: This pipe fan is so constituted that the axial direction of a motor 17 is installed approximately vertically to the penetration direction of a wind tunnel pipe 4. The fan is constituted of a multiblade fan responding to the high static pressure and a scroll 24 to become a channel is inserted and disposed inside a body frame 26.
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