Patent ID: 11933867
Assignee: BRUKER SWITZERLAND AG
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 9:
10. A temperature control device for an NMR sample tube, comprising:
around an interior delimited in a radially outward direction by a cylindrical wall, a plurality of flow channels for a temperature-controlling fluid running radially around the interior and formed for receiving the NMR sample tube, of which a radially outermost one of the flow channels, which is delimited by axial walls, comprises an outer compartment and an inner compartment, in which the temperature-controlling fluid flows in a single direction,
wherein the temperature control device is formed in a first axial end region to be closed to the interior and in an opposite, second axial end region to be open to the interior, for introducing the NMR sample tube into the interior, wherein adjacent flow channels in a counterflow area are each connected to one another with a first fluid passage at one axial end such that a flow direction of a fluid flow in the radially outermost flow channel to an adjacent, radially innermost one of the flow channels reverses in a countercurrent area, wherein the radially outermost flow channel comprises a fluid inlet at one axial end,
wherein the radially innermost flow channel, which is delimited by the axial walls, comprises a second fluid passage to the interior at an axial end which faces the closed first axial end region, wherein the outer compartment of the radially outermost flow channel is geometrically designed to be in full thermal contact with both the radially inner axial wall and the radially outer axial wall,
wherein the outer compartment surrounds the inner compartment of the radially outermost flow channel such that the inner compartment is in thermal contact neither with the radially inner axial wall nor with the radially outer axial wall, and
wherein the inner compartment of the radially outermost flow channel is delimited by an axial partition which, starting from the closed first axial end region, extends in the axial direction only so far as to be spaced apart from the second axial end region.