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US4745760A
Expired / Lapsed
US
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Cryogenic fluid transfer conduit
Assignee: NCR Voyix Corp
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Filing: 1987-07-21
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Granted: 1988-05-24
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Expires: 2007-07-21
Abstract
Abstract A non-conducting, plastic type of cryogenic fluid transfer conduit is presented which is suitable for transferring the cryogenic fluid from a standard reservoir into the midst of an electronics cabinet, such as a mini-computer, to cryogenically cool electronic components. When connected to a suitable enclosure, in which the electronic components to be cooled are mounted, the conduit transfers the cryogenic fluid from the reservoir to the enclosure with an acceptably low heat loss. The conduit subsequently transports the "warmed" cryogenic fluid, which picked up heat by cooling the electronic components, to the region of the reservoir where most or all of this "warmed" cryogenic fluid is vented either to the external environment, or back to the reservoir where it is subsequently cooled by a cryogenic refrigeration unit for re-use. A thermally insulating and moisture preventing outer covering allows the transition of the temperature from the cryogenic level to room temperature level to occur almost completely within the outer covering and, thereby, prevents the moisture condensation problems incurred if the surface temperature of the cryogenic conduit drops below the dew point of the operating environment.
Inventors
- 👤 Warren W. Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:27
CPC Classifications
F; F17; F17C; F17C9/00; F17C3/00; F17C3/02; F17C3/08; F17C3/085; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0352; F17C2205/0358
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
159 words
A cryogenic fluid transfer apparatus used for transferring a cryogenic fluid from a cryogenic reservoir to an enclosure for cooling an integrated circuit comprising: coupling means, having a venting passage therein, connected to the cryogenic reservoir; a first conduit means connected to said coupling means at one end and to said enclosure at the other end for transferring the cryogenic fluid from said cryogenic reservoir in a first direction to said enclosure at a first temperature; a second conduit means connected to said enclosure and said coupling means, and circumferentially located around said first conduit means for transferring the cryogenic fluid from said enclosure at a higher temperature in a direction opposite to said first direction; said second conduit means communicating with said venting passage for venting said fluid at said higher temperature; and insulating means connected to said coupling means and said enclosure around said second conduit means for preventing the condensation of moisture from the operating environment.
Claim 2
Dependent Claim
159 words
A cryogenic fluid transfer apparatus used for transferring a cryogenic fluid from a cryogenic reservoir to an enclosure for cooling an integrated circuit comprising: coupling means, having a venting passage therein, connected to the cryogenic reservoir; a first conduit means connected to said coupling means at one end and to said enclosure at the other end for transferring the cryogenic fluid from said cryogenic reservoir in a first direction to said enclosure at a first temperature; a second conduit means connected to said enclosure and said coupling means, and circumferentially located around said first conduit means for transferring the cryogenic fluid from said enclosure at a higher temperature in a direction opposite to said first direction; said second conduit means communicating with said venting passage for venting said fluid at said higher temperature; and insulating means connected to said coupling means and said enclosure around said second conduit means for preventing the condensation of moisture from the operating environment.
Claim 3
Dependent Claim
47 words
The cryogenic fluid transfer apparatus, according to claim 1, wherein: said insulating means includes a third conduit sealably connected to said coupling means at one end and to said enclosure at the other end thereof; and said third conduit is circumferentially located around said second conduit means.
Claim 4
Dependent Claim
17 words
The cryogenic fluid transfer apparatus, according to claim 2, wherein said third conduit has a corrugated wall.
Claim 5
Dependent Claim
33 words
The cryogenic fluid transfer apparatus, according to claim 3, wherein said first conduit means, said second conduit means and said third conduit are made of a plastic material which is an electrical insulator.
Claim 6
Dependent Claim
18 words
The cryogenic fluid transfer apparatus, according to claim 4, wherein said plastic material remains flexible at cryogenic temperatures.
Claim 7
Dependent Claim
17 words
The cryogenic fluid transfer apparatus, according to claim 5, wherein said plastic material is a fluro-carbon polymer.
Claim 8
Dependent Claim
20 words
The cryogenic fluid transfer apparatus, according to claim 6, further comprising a helical spring circumferentially located around said third conduit.
Claim 9
Dependent Claim
30 words
The cryogenic fluid transfer apparatus, according to claim 1, wherein said insulating means is a foam layer sealably connected to said coupling means, said enclosure, and said second conduit means.
Claim 10
Dependent Claim
27 words
The cryogenic fluid transfer apparatus, according to claim 8, further comprising sealing means for sealing the external surface of said foam layer against the entrance of moisture.
Claim 11
Dependent Claim
27 words
The cryogenic fluid transfer apparatus, according to claim 9, wherein said first and second conduit means are made of a plastic material which is an electrical insulator.
Claim 12
Dependent Claim
18 words
The cryogenic fluid transfer apparatus, according to claim 10, wherein said plastic material remains flexible at cryogenic temperatures.
Claim 13
Dependent Claim
17 words
The cryogenic fluid transfer apparatus, according to claim 11, wherein said plastic material is a fluro-carbon polymer.
Claim 14
Dependent Claim
176 words
A cryogenic fluid transfer apparatus used for transferring a cryogenic fluid from a cryogenic reservoir to an enclosure for cooling an integrated circuit and for returning the fluid to the cryogenic reservoir, comprising: coupling means, having an internal venting passage therein, connected to the cryogenic reservoir; a first conduit means connected to said coupling means at one end and to said enclosure at the other end thereof for transferring the cryogenic fluid from said cryogenic reservoir in a first direction to said enclosure at a first temperature; a second conduit means connected to said enclosure and said coupling means, and circumferentially located around said first conduit means for transferring the cryogenic fluid from said enclosure at a higher temperature in a direction opposite to said first direction; said second conduit means communicating with said internal venting passage thereby venting said fluid at said higher temperature within said cryogenic reservoir; and insulating means sealably connected to said coupling means and said enclosure around said second conduit means for preventing the condensation of moisture from the operating environment.
Claim 15
Dependent Claim
176 words
A cryogenic fluid transfer apparatus used for transferring a cryogenic fluid from a cryogenic reservoir to an enclosure for cooling an integrated circuit and for returning the fluid to the cryogenic reservoir, comprising: coupling means, having an internal venting passage therein, connected to the cryogenic reservoir; a first conduit means connected to said coupling means at one end and to said enclosure at the other end thereof for transferring the cryogenic fluid from said cryogenic reservoir in a first direction to said enclosure at a first temperature; a second conduit means connected to said enclosure and said coupling means, and circumferentially located around said first conduit means for transferring the cryogenic fluid from said enclosure at a higher temperature in a direction opposite to said first direction; said second conduit means communicating with said internal venting passage thereby venting said fluid at said higher temperature within said cryogenic reservoir; and insulating means sealably connected to said coupling means and said enclosure around said second conduit means for preventing the condensation of moisture from the operating environment.
Claim 16
Dependent Claim
47 words
The cryogenic fluid transfer apparatus, according to claim 13, wherein: said insulating means includes a third conduit sealably connected to said coupling means at one end and to said enclosure at the other end thereof; and said third conduit is circumferentially located around said second conduit means.
Claim 17
Dependent Claim
17 words
The cryogenic fluid transfer apparatus, according to claim 14, wherein said third conduit has a corrugated wall.
Claim 18
Dependent Claim
29 words
The cryogenic fluid transfer apparatus, according to claim 15, wherein said first conduit means, said second conduit means and said third conduit are made of a plastic fluro-carbon material.
Claim 19
Dependent Claim
30 words
The cryogenic fluid transfer apparatus, according to claim 13, wherein said insulating means is a foam layer sealably connected to said coupling means, said enclosure, and said second conduit means.
Claim 20
Dependent Claim
27 words
The cryogenic fluid transfer apparatus, according to claim 17, further comprising sealing means for sealing the external surface of said foam layer against the entrance of moisture.
Claim 21
Dependent Claim
23 words
The cryogenic fluid transfer apparatus, according to claim 18, wherein said first and second conduit means are made of a plastic, fluro-carbon material.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-24 | 1991-11-23 | 1992-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-24 | 1995-11-23 | 1996-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-24 | 1999-11-23 | 2000-05-24 | $7700.00 | Window Closed / Lapsed |