-
公开(公告)号：US10322368B2
公开(公告)日：2019-06-18
申请号：US15051382
申请日：2016-02-23
申请人： The Boeing Company
发明人： Paul F. Thieben, Jr. , Robert French , John Suarez
摘要： Tightly-coiled helical ducts for centrifugal air separators may be formed with the tools and methods disclosed herein. A helical coil toolset includes a helically grooved mandrel and an entry block. The helical groove of the mandrel has a small helix inside diameter relative to a width of the helical groove. The entry block has a guide channel to guide a tube to the helical groove and a mandrel channel to receive the mandrel. Methods include forming tubing into a tightly-coiled helical duct by filling a tube with fine particles, positioning the tube in the helical groove of a helically grooved mandrel, fixing the tube relative to the mandrel, assembling an entry block around the tube and around the mandrel, and bending the filled tube around the helically grooved mandrel into the tightly-coiled helical duct by rotating the mandrel relative to the entry block.
-
公开(公告)号：US11235279B2
公开(公告)日：2022-02-01
申请号：US16395637
申请日：2019-04-26
申请人： The Boeing Company
发明人： Paul F. Thieben, Jr. , Robert French , John Suarez
摘要： Methods for forming thin wall tubing into a tightly-coiled helical duct comprise selecting a thin wall tube with an outside tube diameter and a wall thickness that is less than 15% of the outside tube diameter; and bending the thin wall tube to form the tightly-coiled helical duct so that an outside duct diameter of the tightly-coiled helical duct is less than four times the outside tube diameter.
-
搜索结果
2 条记录 (耗时 0.012 秒)
