Chemical oxygen-iodine laser (coil)/cryosorption vacuum pump system
US6154478A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1998 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | Jun 30, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/036
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A high-capacity cryosorption vacuum pump system for a light-weight and compact chemical oxygen-iodine laser. The cryosorption vacuum pump system included a gas chiller and a bed of zeolite or other suitable sorption material. Gas exhausted from the chemical oxygeniodine laser is first chilled to about 100 degrees Kelvin and the condensable gases are removed. Cold and dry gas is then adsorbed onto a bed zeolite cooled to a temperature of approximately 80 degrees Kelvin. The zeolite bed uses a suitable zeolite material preferably in a granulated form and configured in layers several millimeters to several centimeters thick to provide an exposed surface of suitable size. The zeolite is enclosed in a suitable vacuum vessel and thermally insulated. Chilling of the zeolite is accomplished by a contact with suitable cryocooled surfaces or by exposing the zeolite to a cold light noble gas. When the sorption capacity of the zeolite is exhausted, the cryosorption vacuum pump can be regenerated by allowing the zeolite and the gas chiller to warm up and liberate gas. Regeneration can be expedited by heating the zeolite and the gas chiller with electric heaters, by flowing warm dry gas through …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.