| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a header structure that is adjustable in figuration with ease depending on its installation space and is capable of controlling or evening out branch pressure in branch pipes. SOLUTION: A header 1 made of a metallic rectangular parallelepiped box is provided on its bottom with a main pipe 2 and a plurality of branch pipes 3 so that the fluid supplied from the main pipe 2 is distributed among the branch pipes 3. The body thickness (t) of the header 1 is set in advance depending on the thickness and the like of the wall where it is installed. The main pipe 2 and the branch pipes 3 are formed at their connection to the header 1 to have an elliptic shape in conformance to the body thickness (t) of the header 1, and the branch pipes 3 are additionally formed to have different opening cross sections at their connection to the header 1 so that their branch pressure is controlled individually.</p> |
