| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure of a merging section of ventilation ducts of small ventilation resistance, and further to provide a structure of the merging section of the ventilation ducts capable of adjusting distribution of airflow flowing in the merging ventilation duct.SOLUTION: In a structure of a merging section of a ventilation duct, a second ventilation duct is connected on the way of a first ventilation duct to merge airflow flowing in the ventilation duct. The merging section of the first ventilation duct is provided with a through hole penetrating through a duct wall, and the merging section of the second ventilation duct 2 is provided with a cylindrical inserting portion 21 inserted and disposed inside of the first ventilation duct through the through hole. A shield plate 22 for blocking the airflow flowing along the cylindrical shape of the inserting portion, is disposed on a tip of the inserting portion, and the inserting portion 21 of the second ventilation duct 2 is provided with an opening 23 at least on a region facing a downstream side of the first ventilation duct to be adjacent to the shield plate 22, so that the airflow flowing in the second ventilation duct is merged into the first ventilation duct through the opening 23. |
