Patent US5339649A successfully refreshed from Google Patents.
US5339649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cryogenic refrigerator
Assignee: Equos Research Co Ltd
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Filing: 1992-12-07
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Granted: 1994-08-23
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Expires: 2012-12-07
Abstract
Abstract First and second refrigerating circuits respectively cause first and second adsorbing bodies to alternately adsorb and release first and second coolants. In the first refrigerating circuit, when the first adsorbing body is heated, it releases the first coolant. The released first coolant is cooled, and discharged through an expansion valve so that a part of the first coolant is liquefied. The resultant latent heat of vaporization can be utilized to cool an object to be cooled. Thereafter, the first coolant is adsorbed when the first adsorbing body is cooled. In the second refrigerating circuit, when the second adsorbing body is heated, it releases the second coolant. The released second coolant is cooled by a liquefied-gas-type cooler, and discharged through an expansion valve so that a part of the second coolant is liquefied. The resultant latent heat of vaporization is utilized to cool the first adsorbing body of the first refrigerating circuit. Thereafter, the second coolant is adsorbed by the second adsorbing body. The liquefied-gas-type cooler cools the second coolant by utilizing the latent heat of vaporization of a liquefied gas. Thus, the amount of the second coolant liquefied after being discharged through the expansion valve in the second refrigerating circuit is increased.
Inventors
- 👤 Masao Kawai
- 👤 Yoshihiro Kyotani
- 👤 Hideki Aruga
- 👤 Toshihiro Shiimado
- 👤 Yoshihisa Ito
- 👤 Koji Hori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:12
CPC Classifications
F; F25; F25B; F25B17/00; F25B17/12; F25B17/08; F25B17/086; F25B21/00; F25B21/02; F25B21/04; F25B9/00; F25B9/10; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02B; Y02B30/00; Y02B30/62
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
110 words
A cryogenic refrigerator comprising: (a) an adsorbent body; (b) heating means for heating said adsorbent body; (c) an inner vessel containing said adsorbent body and means for heating said adsorbent body and forming a first coolant chamber; (d) an outer vessel containing said inner vessel with a second coolant chamber formed between said inner vessel and said outer vessel; (e) a one-way valve for discharging a first coolant from said first coolant chamber; (f) a one-way valve for feeding the first coolant back to said first coolant chamber; (g) means for continuously circulating a second coolant through said second coolant chamber; and (h) means for intermittently actuating said heating means.
Claim 2
Dependent Claim
110 words
A cryogenic refrigerator comprising: (a) an adsorbent body; (b) heating means for heating said adsorbent body; (c) an inner vessel containing said adsorbent body and means for heating said adsorbent body and forming a first coolant chamber; (d) an outer vessel containing said inner vessel with a second coolant chamber formed between said inner vessel and said outer vessel; (e) a one-way valve for discharging a first coolant from said first coolant chamber; (f) a one-way valve for feeding the first coolant back to said first coolant chamber; (g) means for continuously circulating a second coolant through said second coolant chamber; and (h) means for intermittently actuating said heating means.
Claim 3
Dependent Claim
185 words
A cryogenic refrigerator comprising: (a) a plurality of bodies of adsorbent; (b) a plurality of heating means, each of said heating means being mounted in association with one of said plurality of bodies of adsorbent, for independently heating the associated body of adsorbent; (c) a plurality of inner vessels, each independently accommodating one of said bodies of adsorbent and one of said heating means and forming therein first coolant chambers; (d) a single outer vessel containing said plurality of inner vessels with a common second coolant chamber formed between said inner vessels and said outer vessel; (e) a plurality of one-way valves, each communicating with one of said first coolant chambers, through which a first coolant can be independently discharged from each of said first coolant chambers; (f) a plurality of one-way valves, each communicating with one of said first coolant chambers, through which the first coolant can be independently fed back to each of said first coolant chambers; (g) means for continuously circulating a second coolant through said second coolant chamber; and (h) means for alternately and intermittently actuating said plurality of heating means.
Claim 4
Dependent Claim
185 words
A cryogenic refrigerator comprising: (a) a plurality of bodies of adsorbent; (b) a plurality of heating means, each of said heating means being mounted in association with one of said plurality of bodies of adsorbent, for independently heating the associated body of adsorbent; (c) a plurality of inner vessels, each independently accommodating one of said bodies of adsorbent and one of said heating means and forming therein first coolant chambers; (d) a single outer vessel containing said plurality of inner vessels with a common second coolant chamber formed between said inner vessels and said outer vessel; (e) a plurality of one-way valves, each communicating with one of said first coolant chambers, through which a first coolant can be independently discharged from each of said first coolant chambers; (f) a plurality of one-way valves, each communicating with one of said first coolant chambers, through which the first coolant can be independently fed back to each of said first coolant chambers; (g) means for continuously circulating a second coolant through said second coolant chamber; and (h) means for alternately and intermittently actuating said plurality of heating means.
Claim 5
Dependent Claim
31 words
A cryogenic refrigerator according to claim 1, wherein said heating means comprises a heater disposed adjacent to said adsorbent body, and a power circuit for supplying electric current to said heater.
Claim 6
Dependent Claim
35 words
A cryogenic refrigerator according to claim 2, wherein each of said heating means comprises a heater disposed adjacent to said associated body of adsorbent, and a power circuit for supplying electric current to said heater.
Claim 7
Dependent Claim
37 words
A cryogenic refrigerator according to claim 1, wherein said heating means comprises a pair of electrodes provided on said adsorbent body, and a power circuit connected to said electrodes for supplying electric current to said adsorbent body.
Claim 8
Dependent Claim
44 words
A cryogenic refrigerator according to claim 2, wherein each of said heating means comprises a pair of electrodes provided on the associated body of adsorbent, and a power circuit connected to said electrodes for supplying electric current to said adsorbent bodies through said electrodes.
Claim 9
Dependent Claim
73 words
A cryogenic refrigerator in accordance with claim 1, wherein said means for continuously circulating a second coolant comprises: inlet conduit means for providing fluid communication between said second coolant chamber and a point exterior to said outer vessel; outlet conduit means for providing fluid communication between said second coolant chamber and a point exterior to said outer vessel; and a first conduit loop connecting said inlet conduit means with said outlet conduit means.
Claim 10
Dependent Claim
18 words
A cryogenic refrigerator in accordance with claim 7 wherein said first conduit loop includes a Joule-Thomson expansion valve.
Claim 11
Dependent Claim
80 words
A cryogenic refrigerator in accordance with claim 7 further comprising means for circulating the first coolant through said first coolant chamber, said means for circulating said first coolant comprising: an inlet conduit providing fluid communication between said first coolant chamber and a point exterior to said outer vessel; an outlet conduit providing fluid communication between said first coolant chamber and a point exterior to said outer vessel; and a second conduit loop connecting said inlet conduit with said outlet conduit.
Claim 12
Dependent Claim
41 words
A cryogenic refrigerator in accordance with claim 9 wherein each of said first and second conduit loops contains a Joule-Thomson expansion valve and wherein said first conduit loop passes through a cooling chamber adapted to receive a substance to be cooled.
Claim 13
Dependent Claim
29 words
A cryogenic refrigerator in accordance with claim 9 wherein said adsorbent body is a hollow cylinder and wherein said inlet conduit extends into the hollow of said hollow cylinder.
Claim 14
Dependent Claim
34 words
A cryogenic refrigerator in accordance with claim 7 wherein said first conduit loop contains an adsorbent body and heating means for intermittently heating said adsorbent body to alternately adsorb and release the second coolant.
Claim 15
Dependent Claim
33 words
A cryogenic refrigerator in accordance with claim 1 further comprising hydrogen, as the second coolant, contained within said second coolant chamber and helium, as the first coolant, contained within said first coolant chamber.
Claim 16
Dependent Claim
73 words
A cryogenic refrigerator in accordance with claim 2, wherein said means for continuously circulating a second coolant comprises: inlet conduit means for providing fluid communication between said second coolant chamber and a point exterior to said outer vessel; outlet conduit means for providing fluid communication between said second coolant chamber and a point exterior to said outer vessel; and a first conduit loop connecting said inlet conduit means with said outlet conduit means.
Claim 17
Dependent Claim
18 words
A cryogenic refrigerator in accordance with claim 14 wherein said first conduit loop includes a Joule-Thomson expansion valve.
Claim 18
Dependent Claim
79 words
A cryogenic refrigerator in accordance with claim 14 further comprising means for circulating the first coolant through said first coolant chambers, said means for circulating said first coolant comprising: inlet conduits providing fluid communication between said first coolant chambers and a point exterior to said second coolant chamber; outlet conduits providing fluid communication between said first coolant chambers and a point exterior to said outer vessel; and a second conduit loop connecting said inlet conduits with said outlet conduits.
Claim 19
Dependent Claim
41 words
A cryogenic refrigerator in accordance with claim 16 wherein each of said first and second conduit loops contains a Joule-Thomson expansion valve and wherein said first conduit loop passes through a cooling chamber adapted to receive a substance to be cooled.
Claim 20
Dependent Claim
30 words
A cryogenic refrigerator in accordance with claim 16 wherein said adsorbent bodies are each a hollow cylinder and wherein an inlet conduit extends into the hollow of said hollow cylinder.
Claim 21
Dependent Claim
34 words
A cryogenic refrigerator in accordance with claim 14 wherein said first conduit loop contains an adsorbent body and heating means for intermittently heating said adsorbent body to alternately adsorb and release the second coolant.
Claim 22
Dependent Claim
33 words
A cryogenic refrigerator in accordance with claim 2 further comprising hydrogen, as the second coolant, contained within said second coolant chamber and helium, as the first coolant, contained within said first coolant chamber.
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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) | 1997-08-22 | 1998-02-21 | 1998-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-22 | 2002-02-21 | 2002-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-22 | 2006-02-21 | 2006-08-23 | $7700.00 | Window Closed / Lapsed |