Controllable phase separator for sealing containers filled with superfluid helium
AssigneeDornier System GmbH
InventorsJoachim R. Becker, Egon H. Siewert
Life of this patent
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Abstract
The mass flow rate of helium from a container is controlled by two disks having highly polished mating surfaces and mounted for rotation relative to one another. Each of the disks has at least one axial through passage, at least one of the disks having a through passage which is eccentric to the axis of rotation of the disk. Use of a plurality of through passages in one of the disks, one or more capillary grooves emanating from one of the through passages in one disk and terminating in the circular path described by the through passage in the other disk for controlling the flow rate is illustrated. For example a step motor in combination with a wobble plate rotates one disk in very exact steps relative to the other.
Claims17
Controllable phase separator device for regulating the mass flow of helium from a container filled with super-fluid helium to an external environment, comprising
- a first and second disk having highly polished mating surfaces and mounted for rotation relative to one another about an axis of rotation, said first and second disk having, respectively, at least a first and second axial through passage, at least one of said through passages being eccentric to said axis of rotation, whereby the rate of flow of said helium differs for different angular positions of said first disk relative to said second disk.
Dependencies are inferred from the claim text.