WO1992001894A1 - Regulateur de debit de gaz pour refroidisseur a effet joule-thomson - Google Patents
Regulateur de debit de gaz pour refroidisseur a effet joule-thomson Download PDFInfo
- Publication number
- WO1992001894A1 WO1992001894A1 PCT/FR1990/000551 FR9000551W WO9201894A1 WO 1992001894 A1 WO1992001894 A1 WO 1992001894A1 FR 9000551 W FR9000551 W FR 9000551W WO 9201894 A1 WO9201894 A1 WO 9201894A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- needle
- 4bis
- cryostat
- flow rate
- tubular
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/02—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using Joule-Thompson effect; using vortex effect
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/02—Gas cycle refrigeration machines using the Joule-Thompson effect
- F25B2309/022—Gas cycle refrigeration machines using the Joule-Thompson effect characterised by the expansion element
Definitions
- the invention relates to a miniaturized cooler with Joule-Thomson effect, the flow of gas at high pressure is regulated after a determined time.
- the goal is to obtain very low temperatures in very short times after expansion of the refrigerant.
- the invention consists in taking advantage of the physical properties which metals have in their behavior, having regard to the temperatures to which they are subjected.
- Figure 1 shows a cooler with its flow regulator, mounted in a cryostat equipped with an infrared detector.
- a heat exchanger tube 2 On the envelope tube 1 is wound a heat exchanger tube 2 having a hot end and a cold end.
- This exchanger consists of a capillary tube in which the high pressure gas circulates. On this same tube is wound and welded a metallic element of a determined pitch and whose function is to increase the heat exchange surface. In the inter-turns take place the frets 6 and 8.
- a cylindrical intermediate piece 7 provided with a groove in the longitudinal direction and intended to receive the cold end of the high pressure tube.
- the part 7 receives a cylindrical nozzle 3 pierced in its center with an orifice 10 and providing a chamber 9 for recovering the high pressure gas.
- Parts 3-7, the cold end of the tube 1 are interconnected by the sealed weld 21.
- the fixing flange 5 is drilled in its axial extension of a hole 11 into which the tube 1 is inserted, providing a space of freedom 12 between the hot end of the tube 1 and the bottom of the hole 11.
- the hole 11 is extended by a bore 13 opening out with a smaller diameter.
- the axial extension of the collar 5 and the tube 1 are joined by the sealed weld 14.
- the hot end of the high pressure tube is joined by a connector 18 to a source of pressurized gas.
- the needle 4 and 4bis of revolution is made up of two materials each having a different coefficient of expansion.
- the parts 4 and 4bis are joined together by the weld 22 in order to form a single element.
- the end 4bis ends in a cylindrical-conical part comprising three grooves 23 arranged at 120 °, oriented longitudinally and of determined dimensions.
- the needle 4 and 4bis slides inside the tube 1.
- the cylindroconical end of the needle is disposed concentrically with the orifice 10 of the nozzle 3; the other end of the needle is centered by the hole 13 and joined by sealed welding 19 to the flange.
- part 4 of the needle will be made of the same material as the tube 1 while part 4bis of the same needle will be made of a metal having a lower coefficient of expansion.
- the junction of the tube 1 with the axial extension of the flange 5 at the weld 14 allows the initial adjustment of a gas flow rate by moving the nozzle 3 away or closer to the needle cone 4 when the tube 2 is supplied by gas under constant pressure.
- the low pressure gas is evacuated against -current inside the internal body 20 of the cryostat and cools the high pressure fluid from the power source, as well as the various elements constituting the cooler; and in the first place those closest to the expansion orifice.
- FIG. 1 represents a section of the various elements of the invention and shows the advantages of such a system:
- the three grooves made on the cylindrical-conical part of the needle provide an additional advantage in regulating the flow rate because the sum of the three leakage surfaces which they represent, compared to a single groove of equivalent surface, introduce a side effect in regulation, due to the increase in the Reynolds number, this in the case of an operation resulting from an ambient temperature, very low and which would lead the cylindro-conical part of the needle 4 to come to bear on the seat of the orifice 10.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Radiation Pyrometers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8901360A FR2642510B1 (fr) | 1989-02-02 | 1989-02-02 | Regulateur de debit de gaz pour refroidisseur a effet joule-thomson |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1992001894A1 true WO1992001894A1 (fr) | 1992-02-06 |
Family
ID=9378417
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1990/000551 WO1992001894A1 (fr) | 1989-02-02 | 1990-07-20 | Regulateur de debit de gaz pour refroidisseur a effet joule-thomson |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0491716A1 (fr) |
FR (1) | FR2642510B1 (fr) |
WO (1) | WO1992001894A1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5638818A (en) * | 1991-03-21 | 1997-06-17 | Masimo Corporation | Low noise optical probe |
US9560998B2 (en) | 2006-10-12 | 2017-02-07 | Masimo Corporation | System and method for monitoring the life of a physiological sensor |
US9795739B2 (en) | 2009-05-20 | 2017-10-24 | Masimo Corporation | Hemoglobin display and patient treatment |
US11191485B2 (en) | 2006-06-05 | 2021-12-07 | Masimo Corporation | Parameter upgrade system |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2642510B1 (fr) * | 1989-02-02 | 1995-06-16 | Albagnac Rene | Regulateur de debit de gaz pour refroidisseur a effet joule-thomson |
DE4235752A1 (de) * | 1992-10-23 | 1994-04-28 | Licentia Gmbh | Kryogene Kühlvorrichtung |
AU5238396A (en) * | 1995-06-06 | 1996-12-19 | Hughes Missile Systems Company | Adaptive orifice Joule-Thomson cryostat with servo-control |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2150722A (en) * | 1931-01-29 | 1939-03-14 | Robertshaw Thermostat Co | Thermostat |
US3320755A (en) * | 1965-11-08 | 1967-05-23 | Air Prod & Chem | Cryogenic refrigeration system |
US3340893A (en) * | 1964-11-20 | 1967-09-12 | Heald Machine Co | Throttle |
FR1594598A (fr) * | 1967-10-02 | 1970-06-08 | ||
EP0005048A1 (fr) * | 1978-04-13 | 1979-10-31 | Air Products And Chemicals, Inc. | Cryostat |
GB2112114A (en) * | 1981-12-21 | 1983-07-13 | British Aerospace | Valve for cooling apparatus |
EP0170948A1 (fr) * | 1984-07-30 | 1986-02-12 | Societe Anonyme De Telecommunications (S.A.T.) | Régulateur de refroidisseur à effet Joule-Thomson |
US4631928A (en) * | 1985-10-31 | 1986-12-30 | General Pneumatics Corporation | Joule-Thomson apparatus with temperature sensitive annular expansion passageway |
DE3619580A1 (de) * | 1986-06-11 | 1987-12-17 | Licentia Gmbh | Kryogene kuehlvorrichtung |
FR2642510A1 (fr) * | 1989-02-02 | 1990-08-03 | Albagnac Rene | Regulateur de debit de gaz pour refroidisseur a effet joule-thomson |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1468862A (fr) * | 1965-10-21 | 1967-02-10 | Air Liquide | Réfrigérateur miniature; notamment pour détecteur quantique |
US3613689A (en) * | 1970-01-13 | 1971-10-19 | Frigitronics Of Conn Inc | Cryosurgical apparatus |
GB1557922A (en) * | 1977-01-13 | 1979-12-19 | Hymatic Eng Co Ltd | Cryogenic cooling apparatus |
FR2598206B1 (fr) * | 1986-05-05 | 1988-07-08 | Air Liquide | Refroidisseur joule-thomson. |
-
1989
- 1989-02-02 FR FR8901360A patent/FR2642510B1/fr not_active Expired - Fee Related
-
1990
- 1990-07-20 EP EP19900912011 patent/EP0491716A1/fr not_active Ceased
- 1990-07-20 WO PCT/FR1990/000551 patent/WO1992001894A1/fr not_active Application Discontinuation
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2150722A (en) * | 1931-01-29 | 1939-03-14 | Robertshaw Thermostat Co | Thermostat |
US3340893A (en) * | 1964-11-20 | 1967-09-12 | Heald Machine Co | Throttle |
US3320755A (en) * | 1965-11-08 | 1967-05-23 | Air Prod & Chem | Cryogenic refrigeration system |
FR1594598A (fr) * | 1967-10-02 | 1970-06-08 | ||
EP0005048A1 (fr) * | 1978-04-13 | 1979-10-31 | Air Products And Chemicals, Inc. | Cryostat |
GB2112114A (en) * | 1981-12-21 | 1983-07-13 | British Aerospace | Valve for cooling apparatus |
EP0170948A1 (fr) * | 1984-07-30 | 1986-02-12 | Societe Anonyme De Telecommunications (S.A.T.) | Régulateur de refroidisseur à effet Joule-Thomson |
US4631928A (en) * | 1985-10-31 | 1986-12-30 | General Pneumatics Corporation | Joule-Thomson apparatus with temperature sensitive annular expansion passageway |
DE3619580A1 (de) * | 1986-06-11 | 1987-12-17 | Licentia Gmbh | Kryogene kuehlvorrichtung |
FR2642510A1 (fr) * | 1989-02-02 | 1990-08-03 | Albagnac Rene | Regulateur de debit de gaz pour refroidisseur a effet joule-thomson |
Non-Patent Citations (2)
Title |
---|
Soviet Inventions Illustrated, Section P/Q, semaine A20, 27 juin 1978, Derwent Publications Ltd., (Londres, GB); & SU-A-559078 (LANDA) 29 juillet 1977 * |
Soviet Inventions Illustrated, Section P/Q, semaine E21, 7 juillet 1982, Derwent Publications Ltd., (Londres, GB); & SU-A-851021 (LANDA), 30 juillet 1981 * |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5638818A (en) * | 1991-03-21 | 1997-06-17 | Masimo Corporation | Low noise optical probe |
US5782757A (en) * | 1991-03-21 | 1998-07-21 | Masimo Corporation | Low-noise optical probes |
US6088607A (en) * | 1991-03-21 | 2000-07-11 | Masimo Corporation | Low noise optical probe |
US6256523B1 (en) | 1991-03-21 | 2001-07-03 | Masimo Corporation | Low-noise optical probes |
US6792300B1 (en) | 1991-03-21 | 2004-09-14 | Masimo Corporation | Low-noise optical probes for reducing light piping |
US11191485B2 (en) | 2006-06-05 | 2021-12-07 | Masimo Corporation | Parameter upgrade system |
US12109048B2 (en) | 2006-06-05 | 2024-10-08 | Masimo Corporation | Parameter upgrade system |
US10039482B2 (en) | 2006-10-12 | 2018-08-07 | Masimo Corporation | System and method for monitoring the life of a physiological sensor |
US10342470B2 (en) | 2006-10-12 | 2019-07-09 | Masimo Corporation | System and method for monitoring the life of a physiological sensor |
US10863938B2 (en) | 2006-10-12 | 2020-12-15 | Masimo Corporation | System and method for monitoring the life of a physiological sensor |
US9560998B2 (en) | 2006-10-12 | 2017-02-07 | Masimo Corporation | System and method for monitoring the life of a physiological sensor |
US11317837B2 (en) | 2006-10-12 | 2022-05-03 | Masimo Corporation | System and method for monitoring the life of a physiological sensor |
US11857319B2 (en) | 2006-10-12 | 2024-01-02 | Masimo Corporation | System and method for monitoring the life of a physiological sensor |
US12127835B2 (en) | 2006-10-12 | 2024-10-29 | Masimo Corporation | System and method for monitoring the life of a physiological sensor |
US9795739B2 (en) | 2009-05-20 | 2017-10-24 | Masimo Corporation | Hemoglobin display and patient treatment |
US10413666B2 (en) | 2009-05-20 | 2019-09-17 | Masimo Corporation | Hemoglobin display and patient treatment |
US10953156B2 (en) | 2009-05-20 | 2021-03-23 | Masimo Corporation | Hemoglobin display and patient treatment |
US11752262B2 (en) | 2009-05-20 | 2023-09-12 | Masimo Corporation | Hemoglobin display and patient treatment |
Also Published As
Publication number | Publication date |
---|---|
EP0491716A1 (fr) | 1992-07-01 |
FR2642510B1 (fr) | 1995-06-16 |
FR2642510A1 (fr) | 1990-08-03 |
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