| 摘要 |
PROBLEM TO BE SOLVED: To keep blowout air flow within a predetermined allowable distribution range without installing movable parts in a box, regardless of the direction of a connected duct.SOLUTION: A partition plate 13 for dividing the inside of a box-type body 10 into a duct connection port side space 10a and a blowout port side space 10b is arranged in the body, the partition plate 13 having openings 13a, 13b. Short pipes 14a and 14b having the same inside diameter as the openings 13a, 13b are inserted into the openings 13a and 13b respectively. A duct connection port 11 is formed on the side of the body 10. The total area of the openings 13a, 13b is smaller than the cross-sectional area of the duct connection port 11. The length L of the short pipes 14a, 14b is set at 0.17-0.83 times as long as the diameter D of the openings 13a, 13b. |
