Centrifugal air separator coil manufacturing tools and methods
US10322368B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2016 |
| Grant date | Jun 18, 2019 |
| Priority date | — |
| Expiry date | Jun 25, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2259/4575
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.