Thermalization of a cryogenic flex cable using a thermally conductive cladding
AssigneeInternational Business Machines Corporation
InventorsCharles Thomas Rettner, Jen-Hao Yeh, Daniel Rugar
Life of this patent
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Abstract
A system includes a cable passing from a first plate to a second plate via an intermediate plate, an attachment coupling the cable to the intermediate plate, and a conductive cladding connected to an outer surface of the cable and extended a first length from the attachment toward the second plate. The total length of the thermally conductive cladding is larger than the total length of the attachment, and the cable is thermally connected to the first plate, the second plate, and the intermediate plate.
Claims19
A system comprising:
- a cable passing from a first plate to a second plate via an intermediate plate, wherein the cable is thermally connected to the first plate, the second plate, and the intermediate plate;
- an attachment coupling the cable to the intermediate plate;
- and
- a thermally conductive cladding connected to an outer surface of the cable and extended a first length from the attachment toward the second plate, wherein a total length of the thermally conductive cladding is larger than a total length of the attachment.
A system comprising:
- a cable connecting a first plate and a second plate via an intermediate plate, wherein the first plate is at a first temperature and the second plate is at a second temperature, the second temperature being lower than the first temperature;
- an attachment connecting the cable to the intermediate plate;
- and
- a thermally conductive cladding connected to the cable, wherein the thermally conductive cladding is extended a first length from the attachment toward the first plate and a second length from the attachment toward the second plate.
A method of fabricating a flex cable, the method comprising:
- determining a length of a thermally conducting cladding to minimize heat flow within the flex cable;
- and;
- forming the flex cable with the thermally conductive cladding, wherein forming the flex cable comprises:
- forming the flex cable passing from a first plate to a second plate via an intermediate plate;
- thermally connecting the flex cable to the first plate, the second plate, and the intermediate plate;
- attaching the flex cable to the intermediate plate via an attachment, wherein the flex cable comprises an inner layer, and an outer layer separated by an intermediate layer, and wherein determining a length of the thermally conductive cladding is performed based on Lc=ALt and
- L
- t
- =
- (
- K
- w
- K
- i
-
- t
- w
-
- t
- i
- n
- sides
- )
- 1
- /
- 2
- wherein:
- Kw and Ki are thermal conductivities of the inner layer and the intermediate layer, respectively;
- tw and ti are thicknesses of the inner layer and the intermediate layer, respectively;
- nsides is 1 when the thermally conductive cladding is applied on one side of the flex cable, and 2, when the thermally conductive cladding is applied on two sides of the flex cable;
- and
- A is a multiplier between 2 and 6.
Dependencies are inferred from the claim text.