Temperature-controlled injector for a chemical analysis unit
US6907796B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2002 |
| Grant date | Jun 21, 2005 |
| Priority date | — |
| Expiry date | Jun 11, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/3061
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a temperature-controlled injector for a chemical analysis unit, in particular a gas chromatograph, comprising an injector tube, which can be received by a receiving tube, having a cooling system, which surrounds the receiving tube, through which coolant can flow, which has coolant connections and which is designed as a metallic tube coil, and a resistance heating system for the injector tube, in which injector the receiving tube consists of a material of good thermal conductivity, is electrically insulating towards the outside, and the tube coil rests on the receiving tube, has an electrical resistance which is sufficient to rapidly heat the injector tube and can be acted on by current via electrical connection pieces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.