Temperature-control device for samples
US5192910A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1991 |
| Grant date | Mar 9, 1993 |
| Priority date | — |
| Expiry date | Jun 10, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/31
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a temperature-control device for samples, in particular for NMR spectroscopy, comprising a vessel (20) provided with an opening (19) for receiving a measuring sample (1), an inlet opening (10) for introduction of the fluid, an outlet opening (15) for the outflow of the fluid and a flow channel (18) through which at least a partial flow of the fluid is guided past the sample (1), as direct fluid flow, from the bottom to the top, there is provided at least one by-pass channel (17) which is arranged in such a way that an additional partial fluid flow can be guided past the upper area of the said sample (1) in the form of a by-pass fluid flow (7). This enables also the upper area of the sample (1) to be temperature-controlled in an efficient way so as to minimize the temperature gradient in the sample (1). The temperature-control device may comprise, in the upper area of the sample (1), a heat-exchanger system (14) which concentrates the direct fluid flow ( 8), after it has been combined with the by-pass fluid flow (8), around the sample (1). One achieves in this manner efficient temperature control of the upper section of the sample by the fluid flow, without any disturbing thermal…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.