WO2023088607A1 - Cryogenic pumping system and innovative integration for sub-kelvin cryogenics below 1.5k - Google Patents
Cryogenic pumping system and innovative integration for sub-kelvin cryogenics below 1.5k Download PDFInfo
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- WO2023088607A1 WO2023088607A1 PCT/EP2022/077908 EP2022077908W WO2023088607A1 WO 2023088607 A1 WO2023088607 A1 WO 2023088607A1 EP 2022077908 W EP2022077908 W EP 2022077908W WO 2023088607 A1 WO2023088607 A1 WO 2023088607A1
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- Prior art keywords
- inlet
- outlet
- fluid
- circuit
- working fluid
- Prior art date
Links
- 238000005086 pumping Methods 0.000 title claims abstract description 15
- 230000010354 integration Effects 0.000 title 1
- 239000012530 fluid Substances 0.000 claims abstract description 136
- 238000001816 cooling Methods 0.000 claims abstract description 31
- 238000005057 refrigeration Methods 0.000 claims abstract description 27
- 238000004891 communication Methods 0.000 claims description 39
- 239000007791 liquid phase Substances 0.000 claims description 13
- 238000000926 separation method Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 7
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 239000007792 gaseous phase Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- SWQJXJOGLNCZEY-BJUDXGSMSA-N helium-3 atom Chemical compound [3He] SWQJXJOGLNCZEY-BJUDXGSMSA-N 0.000 claims description 3
- 235000021183 entrée Nutrition 0.000 description 25
- 239000012636 effector Substances 0.000 description 7
- 238000005191 phase separation Methods 0.000 description 4
- 239000001307 helium Substances 0.000 description 3
- 229910052734 helium Inorganic materials 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000012808 vapor phase Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229940082150 encore Drugs 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000013529 heat transfer fluid Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
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
- F25B9/12—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using 3He-4He dilution
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/39—Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator
-
- 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
Definitions
- the present invention relates to the field of refrigeration at very low temperatures and more particularly to the field of refrigeration devices at temperatures approaching the Kelvin.
- a refrigeration device comprising a working fluid circulation circuit comprising a working fluid compressor, a first heat exchanger comprising a first hot channel in which circulates a first flow of working fluid to be cooled and a first cold channel in which circulates a second flow of working fluid to cool the first flow, a first pressure reducer of the Joule-Thompson type and a first separation tank.
- the refrigeration device also comprises a first network of ducts connecting the elements to put in fluid communication a first outlet of the compressor from which the first working fluid is discharged with a first inlet of the first hot channel, a second outlet of the first hot channel with a second inlet of the first expander, a third outlet of the first expander with a third inlet of the first reservoir, a fourth outlet of the first reservoir with a fourth inlet of the first cold channel, a fifth outlet of the first cold channel with a fifth inlet of the first compressor through which the first working fluid is sucked.
- the refrigeration device also includes a second heat exchanger that includes a second hot channel in heat exchange with the first tank. Such a circuit supplies cold temperatures to the second cold channel of the second exchanger.
- the aim of the invention is in particular to increase the cooling capacity of a refrigeration device incorporating a Joule-Thompson type expansion valve.
- the device also comprises a thermally insulated enclosure inside which there is at least some of the elements, the first transfer member being located outside the enclosure.
- the first working circuit also comprises a first pumping member located inside the enclosure and connected to the first network of pipes.
- a device capable of circulating a larger quantity of working fluid in the second heat exchanger without modifying the first transfer member is thus obtained, thus allowing improved performance for a given device volume and/or miniaturization of the refrigeration device .
- the first pumping member being located between the sixth outlet and the eighth inlet.
- the first pumping member is directly connected to the eighth inlet.
- the first pumping member is located downstream of the seventh outlet.
- the coldest temperature produced by the device is improved when the device comprises a second Joule-Thompson type regulator and a second reservoir, the second regulator comprising a tenth inlet in fluid communication with the first circuit downstream of the third outlet and a tenth outlet in fluid communication with an eleventh inlet of the second reservoir, the second reservoir comprising an eleventh outlet in fluid communication with the eighth inlet, the second reservoir also comprising a first withdrawal of working fluid in liquid phase in fluid communication with the first circuit upstream of the third entry.
- the coldest temperature produced by the device is further improved when the device comprises a third Joule-Thompson type expander, a third reservoir and a fifth heat exchanger comprising a fifth hot channel and a fifth cold channel,
- the third expander comprising a twelfth inlet in fluid communication with the first circuit downstream of the third outlet and a twelfth outlet in fluid communication with a thirteenth inlet of the third tank, the third tank comprising a thirteenth outlet in fluid communication with the eighth inlet, the third separation tank also comprising a second withdrawal of working fluid in the liquid phase in fluid communication with a fourteenth inlet of the fifth hot runner, a fourteenth outlet of the fifth hot runner being in fluid communication with the first circuit upstream of the third inlet, a fifteenth inlet and a fifteenth output of the third cold channel being in fluid communication with the first circuit downstream of the seventh output.
- the refrigeration device comprises a sixth heat exchanger comprising a sixth hot channel and a sixth cold channel, a fourth Joule-Thompson type expander and a fourth tank, the sixth hot channel comprising a sixteenth inlet in fluid communication with the first work circuit between the first output and the third input and the sixth cold channel includes a sixteenth output in fluid communication with the first work circuit downstream of the fifth output.
- the first working fluid comprises a volume proportion of Helium 4 greater than 99.9%.
- the device comprises a second working circuit for circulating a second working fluid by means of a second transfer member and a second cryogenic pump, the second working circuit comprising at least a first pipe portion in heat exchange with the first tank.
- the second transfer member is located outside the enclosure.
- the second circuit comprises at least a second pipe portion in heat exchange with the second reservoir and/or when the second working circuit also comprises a fifth Joule Thompson type regulator.
- the second working fluid may comprise a volume proportion of Helium 3 greater than 99.9%.
- the invention also relates to a refrigeration method using a device as described above, the method comprising the following steps:
- the step of isenthalpic expansion of the first working fluid is carried out so as to bring the first working fluid to a temperature between five hundred millikelvins and 4.5 Kelvins before the separation step.
- the method comprises the following steps:
- the step of isenthalpic expansion of the second working fluid is carried out so as to bring the second working fluid to a temperature of between three hundred and seven hundred millikelvin before the separation step.
- the refrigeration device comprises a first working circuit 10 for circulating a first working fluid 11 - here a fluid comprising a volume proportion of helium 4 isotope equal to 99, 9%.
- the circuit 10 also comprises the following thermodynamic effectors: a first compressor 20 of the fluid 11, a first cooling unit 300 comprising a first heat exchanger 310- here a counter-current exchanger comprising a first hot channel 311 and a first cold channel 312
- the cooling unit 300 also comprises a second heat exchanger 320 comprising a second hot channel 321 and a second cold channel 322.
- the circuit 10 also comprises a third heat exchanger 30, here a counter-current exchanger comprising a third hot channel 31 and a third cold channel 32, a first pressure reducer 40 of the Joule-Thompson type and a first reservoir 50 for phase separation.
- the device 1 also comprises a fourth heat exchanger 60 which comprises a fourth hot channel 61 in heat exchange with the first tank 50.
- the cold channel 322 is connected to an external cold source 330 according to known methods.
- the external cold source cools a working fluid to the desired temperature and this cooled fluid then flows through channel 322.
- the device 1 also comprises a first cryogenic pump 80 located in the circuit 10 between the sixth output 52 and the eighth input 22. More specifically, the ninth input 81 of the pump 80 is connected to the output 36 and the ninth output 82 of the Pump 80 is connected to the seventh inlet 315. Pump 80 is then downstream from outlet 36 and upstream from inlet 22.
- the device 1 comprises a thermally insulated enclosure 5 and inside which are located the circuit 10 and all the effectors listed above of the device 1 with the exception of the compressor 20.
- the compressor 20 draws in the fluid 11 through the eighth inlet 22 and discharges it through the first outlet 21 after having subjected it to a preferably isothermal compression (the compressed fluid 11 is at the same temperature as the fluid 11 before compression) .
- the fluid 11 therefore enters through the eighth inlet 22 at a temperature close to ambient temperature (i.e. approximately three hundred Kelvins) and a pressure close to atmospheric pressure (i.e. approximately one bar).
- the fluid 11 leaves the compressor 20 at a pressure of between ten and twenty-five bars, preferably between fifteen and twenty bars, and a temperature close to ambient temperature (that is to say about three hundred Kelvins).
- the compressed fluid 11 then enters the cooling unit 300 and comes out at a temperature of about fifteen Kelvins.
- the fluid 11 then enters the hot channel 31 in which it is cooled by heat exchange with the flow circulating in the cold channel 32.
- the fluid 11 then undergoes isenthalpic expansion in the expander 40 before entering the reservoir 50.
- the tank 50 then comprises two phases at very low temperature of the fluid 11: a first liquid phase 12 and a second gaseous phase 13.
- the temperature of the fluid 11 present in the tank 50 is between 1.8 and 4.5 Kelvins for a pressure suction of the pump 80 of between fifteen millibars and one bar respectively.
- Reservoir 50 constitutes the fourth cold channel of fourth exchanger 60 which can be used for direct or indirect cooling, for example, of a quantum computer or superconducting electronic components.
- the fluid 11 After having yielded cold temperatures to the hot channel 61 of the exchanger 60, the fluid 11 exits from the tank 50 to enter the cold channel 32. On leaving the cold channel 32, the fluid 11 is pumped by the cryogenic pump 80 before be sucked up by the compressor 20. The cryogenic pump 80 then acts on the fluid 11 when the latter has a high volumetric density of Helium isotope 4 (corresponding to the working temperatures and pressures) and thus considerably increases the total flow rate of Helium isotope 4 in the circuit 10 which makes it possible to provide significant cooling power to cool the hot channel 61.
- the pump 80 is called "cryogenic" because it operates at temperatures below fifty Kelvins.
- the thermally insulated enclosure 5 is configured to contain all the elements of the device at a temperature below ambient temperature when the device is in operation.
- the device 1 comprises, in addition to the elements previously described in relation to the first embodiment, a second regulator 90 of the Joule-Thompson type and a second phase separation reservoir 100 which are both connected to the circuit 10 by the network 70.
- the two reservoirs 100, 50 are arranged in series in the circuit.
- the two regulators 90, 40 are arranged in series in the circuit.
- the regulator 90 comprises a tenth inlet 91 in fluid communication with the circuit 10 downstream of the first outlet 21 and a tenth outlet 92 in fluid communication with an eleventh inlet 101 of the second reservoir 100.
- An eleventh outlet 102 of the second reservoir 100 is in fluid communication with the eighth inlet 22.
- the second reservoir 100 comprises, here, a first withdrawal 103 of fluid 11 in the liquid phase which is in fluid communication with the first circuit 10 upstream of the inlet 33 of the exchanger 30.
- the regulator 90 and the second tank 100 are both located inside the enclosure 5.
- the assembly formed by the second regulator 90 and the second reservoir 100 allows the device 1 to achieve a first drop in temperature of the fluid 11 which will then, after passing through the regulator 40, be at a temperature of the order of 1.8 Kelvins in the first tank 50. That is to say that, compared to the previous embodiment, the example of the provides two separation tanks 100, 50 in series, the cryogenic pump 80 being configured to maintain a pressure of between 10 mbar and 20 mbar, typically 15 mbar, in the vapor phase of the first tank 50 in order to obtain a temperature of the phase liquid in the first reservoir 50 which is lower than the temperature of the second reservoir 100 and typically this temperature of the liquid phase in the first reservoir 50 is between 1.6 K and 3 K, typically 1.8 K.
- the device 1 comprises a third Joule-Thompson type expansion valve 110, a third tank 120 and a fifth heat exchanger 130 (comprising a fifth hot channel 131 and a fifth cold channel 132) which are both connected to the circuit 10 by the network 70.
- the third regulator 110 comprises a twelfth inlet 111 which is in fluid communication with the circuit 10 downstream of the first outlet 21 and a twelfth outlet 112 which is in fluid communication with a thirteenth inlet 121 of the third tank 120.
- the third reservoir 120 comprises a thirteenth outlet 122 in fluid communication with the eighth inlet 22.
- the third reservoir 120 also comprises a second withdrawal 123 of fluid 11 in liquid phase in fluid communication with a fourteenth inlet 133 of the hot channel 131.
- the fourteenth outlet 134 of the hot runner 131 is in fluid communication with the first circuit 10 upstream of the third inlet 33. More precisely, and in this particular embodiment comprising three expanders in series and three reservoirs in series, the outlet 134 of the hot runner 131 is connected at the inlet 91 of the second regulator 90.
- the fifteenth input 135 and the fifteenth output 136 of the cold channel 132 are in fluid communication with the circuit 10 downstream of the output 36.
- the inlet 135 of the cold channel 132 is connected to the outlet 82 of the pump 80.
- the third regulator 110, the third tank 120 and the fifth exchanger 130 are located inside of enclosure 5.
- the assembly formed by the third regulator 110 and the third tank 120 allows the device 1 to achieve an additional drop in temperature of the fluid 11 which will then, after passing through the regulator 90, then the second tank 100 and then in the regulator 40 at a temperature of the order of 0.8 to 1 Kelvin in the tank 50.
- a second cryogenic pump 140 is connected to the circuit 10 between the output 82 and the input 22 (in series with the first pump 80). More precisely, the pump 140 is connected to the outlet 136 of the exchanger 130. That is to say that, compared to the previous embodiments, the example of the provides three separation tanks in series, the cryogenic pump 80 being configured to maintain a pressure of between 0.015 millibar and 0.15 millibar in the vapor phase of the first tank 50 in order to obtain a temperature of the liquid phase lower than the temperature of the other tanks 120 and 100, this temperature in the first tank 50 being for example between 0.8 Kelvin and 1 Kelvin.
- the device 1 comprises a sixth heat exchanger 150 comprising a sixth hot channel 151 and a sixth cold channel 152, a fourth expansion valve 160 of the Joule-Thompson type and a fourth reservoir 170.
- Hot runner 151 includes a sixteenth inlet 153 in fluid communication with first circuit 10 between outlet 21 and inlet 33.
- the inlet 153 is connected to the circuit 10 by a connection made between the withdrawal 103 and the inlet 33.
- the cold channel 152 comprises a sixteenth outlet 156 in fluid communication with the circuit 10 downstream of the outlet 36.
- the outlet 154 of the hot runner 151 is connected to a seventeenth inlet 161 of the expander 160.
- the eighteenth outlet 162 of the expander 160 is connected to the eighteenth inlet 171 of the fourth reservoir 170 and the nineteenth outlet 172 of the fourth reservoir 170 is connected to the nineteenth inlet 155 of the cold channel 152.
- the fourth tank 170 serves as a cold source to cool the hot channel 61.1 of a fourth additional exchanger 60.1.
- Other exchangers, expanders and additional reservoirs can also be installed in parallel with the exchanger 150, the expander 160, the reservoir 170 and the additional exchanger 60.1 as shown in broken lines on the .
- the example of the provides several sets each comprising a heat exchanger 60, 60.1, a phase separation tank 50, 170, an expansion valve 40, 160, and a heat exchanger 30, 150. These sets being supplied in parallel with working fluid by a same outlet 103 of tank 100 and being connected in parallel to the same cryogenic pump 80.
- the device 1 comprises a second working circuit 180 for circulating a second working fluid 181—here a fluid comprising a volume proportion of helium 3 isotope greater than or equal to 99.9%.
- the circuit 180 also comprises, in addition to the effectors of the second embodiment, the following thermodynamic effectors: a second compressor 190 of the fluid 181, a fifth expansion valve 200 of the Joule-Thompson type, a fifth tank 210 for phase separation, a third cryogenic pump 220, a seventh heat exchanger 230 and an eighth heat exchanger 240.
- the second compressor 190 is connected to a second cooling unit 250, identical to the cooling unit 300 and which is connected to the cold source 330.
- circuit 180 All the effectors of circuit 180 except for the second compressor 190 are located inside enclosure 5.
- the network 260 comprises a first portion 261 of conduit which extends into the first reservoir 50, a second portion 262 of conduit which extends into the second reservoir 100 and a third portion 263 of conduit which extends into the third reservoir 120.
- the portions 261, 262 and 263 can be provided with radial fins in order to improve the heat exchanges respectively with the fluid contained in the first reservoir 50, the second reservoir 100 and the third reservoir 120.
- the portions 261, 262 and 263 are located between the outlet 191 of the second compressor 190 and the inlet 201 of the fifth regulator 200 and contribute to cooling the fluid 181 before its expansion in the fifth regulator 200.
- the cooling, using the circuit 10, of the fluid 181 present in the circuit 180 and which itself undergoes an isenthalpic expansion in the fifth regulator 200 makes it possible to further lower the temperature of the cold channel in connection with the hot channel 61
- the assembly formed by the fifth regulator 200 and the fifth tank 210 achieves an additional drop in temperature of the fluid 181 which will then, after passing through the fifth regulator 200, be at a temperature of the order of 0.3 Kelvin or lower in the fifth tank 210.
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- Engineering & Computer Science (AREA)
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- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
Description
- un premier organe de transfert du fluide de travail ;
- une unité de refroidissement comprenant un premier échangeur thermique comportant un premier canal chaud et un premier canal froid reliés au premier circuit de travail, l’unité de refroidissement comportant également un deuxième échangeur thermique comprenant un deuxième canal chaud relié au premier circuit de travail et un deuxième canal froid relié à une première source froide;
- un troisième échangeur thermique comprenant un troisième canal chaud et un troisième canal froid;
- un premier détendeur de type Joule-Thompson ;
- un premier réservoir configuré pour être en échange thermique avec un objet à refroidir .
- a first working fluid transfer member;
- a cooling unit comprising a first heat exchanger comprising a first hot channel and a first cold channel connected to the first working circuit, the cooling unit also comprising a second heat exchanger comprising a second hot channel connected to the first working circuit and a second cold channel connected to a first cold source;
- a third heat exchanger comprising a third hot channel and a third cold channel;
- a first Joule-Thompson type regulator;
- a first reservoir configured to be in heat exchange with an object to be cooled .
- une première sortie de l’organe de transfert de laquelle est refoulé le premier fluide de travail avec une première entrée du premier canal chaud ;
- une deuxième sortie du premier canal chaud avec une deuxième entrée du deuxième canal chaud;
- une troisième sortie du canal chaud à une troisième entrée du troisième canal chaud;
- une quatrième sortie du troisième canal chaud (31) avec une quatrième entrée du premier détendeur;
- une cinquième sortie du premier détendeur avec une cinquième entrée du premier réservoir ;
- une sixième sortie du premier réservoir avec une sixième entrée du troisième canal froid ;
- une septième sortie du troisième canal froid avec une huitième entrée du premier organe de transfert par laquelle le premier fluide de travail est aspiré ;
- a first outlet of the transfer member from which the first working fluid is discharged with a first inlet of the first hot runner;
- a second hot runner second output with a second hot runner second input;
- a third hot runner output to a third hot runner third input;
- a fourth output of the third hot runner (31) with a fourth input of the first expander;
- a fifth outlet from the first regulator with a fifth inlet from the first tank;
- a sixth outlet from the first reservoir with a sixth inlet from the third cold channel;
- a seventh outlet of the third cold channel with an eighth inlet of the first transfer member through which the first working fluid is sucked;
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une première sortie 21 du compresseur 20, de laquelle est refoulé le fluide 11, avec une première entrée 313 du canal chaud 311 ; - une deuxième sortie 314 du canal chaud 311 avec une deuxième entrée 323 du canal chaud 321 ;
- une troisième sortie 324 du canal chaud 321 à une troisième entrée 33 du canal chaud 31 ;
- une quatrième sortie 34 du canal chaud 31 avec une quatrième entrée 41 du détendeur 40 ;
-
une cinquième sortie 42 du détendeur 40 avec une cinquième entrée 51 du réservoir 50 ; -
une sixième sortie 52 du réservoir 50 avec une sixième entrée 35 du canal froid 32; -
une septième sortie 36 du canal froid 32 avec une septième entrée 315 du canal froid 312 ; -
une huitième sortie 316 du canal froid 312 avec une huitième entrée 22 du compresseur 20.
- a
first outlet 21 of thecompressor 20, from which the fluid 11 is discharged, with afirst inlet 313 of thehot channel 311; - a
second output 314 of thehot runner 311 with asecond input 323 of thehot runner 321; - a
third output 324 of thehot runner 321 to athird input 33 of thehot runner 31; - a
fourth outlet 34 of thehot channel 31 with afourth inlet 41 of theexpander 40; - a
fifth outlet 42 from theregulator 40 with afifth inlet 51 from thereservoir 50; - a
sixth outlet 52 fromreservoir 50 with asixth inlet 35 fromcold channel 32; - a
seventh output 36 of thecold channel 32 with aseventh input 315 of thecold channel 312; - an
eighth output 316 of thecold channel 312 with aneighth input 22 of thecompressor 20.
-
une vingtième sortie 191 du deuxième compresseur 190 de laquelle est refoulé le fluide 181 avec une vingtième entrée 251 de l’unité de refroidissement 250 ; - une vingt-et-
unième sortie 252 de l’unité de refroidissement 250 avec une vingt-et-unième entrée 231 d’un canal chaud 232 de l’échangeur 230; - une vingt-
deuxième sortie 233 du canal chaud 232 avec une vingt-deuxième entrée 241 d’un canal chaud 242 de l’échangeur 240; - une vingt-
troisième sortie 243 du canal chaud 242 avec une vingt-troisième entrée 201 du cinquième détendeur 200; - une vingt-
quatrième sortie 202 du cinquième détendeur 200 avec une vingt-quatrième entrée 211 du cinquième réservoir 210; - une vingt-
cinquième sortie 212 du cinquième réservoir 210 avec une vingt-cinquième entrée 244 d’un canal froid 245 de l’échangeur 240 ; - une vingt-
sixième sortie 246 du canal froid 245 avec une vingt-septième entrée 221 de la troisième pompe 220; - une vingt-
septième sortie 222 de la troisième pompe 220 avec une vingt-septième entrée 234 d’un canal froid 235 de l’échangeur 230 ; - une vingt-
huitième sortie 236 du canal froid 235 avec une vingt-huitième entrée 253 de l’unité de refroidissement 250; - une vingt-
neuvième sortie 254 de l’unité de refroidissement 250 avec une vingt-neuvième entrée 192 du deuxième compresseur 190.
- a
twentieth outlet 191 of thesecond compressor 190 from which thefluid 181 is discharged with atwentieth inlet 251 of thecooling unit 250; - a twenty-
first outlet 252 of thecooling unit 250 with a twenty-first inlet 231 of a hot runner 232 of theexchanger 230; - a twenty-
second outlet 233 of the hot runner 232 with a twenty-second inlet 241 of ahot runner 242 of theexchanger 240; - a twenty-
third outlet 243 of thehot runner 242 with a twenty-third inlet 201 of thefifth expander 200; - a twenty-
fourth outlet 202 of thefifth regulator 200 with a twenty-fourth inlet 211 of thefifth reservoir 210; - a twenty-
fifth outlet 212 of thefifth tank 210 with a twenty-fifth inlet 244 of acold channel 245 of theexchanger 240; - a twenty-
sixth outlet 246 of thecold channel 245 with a twenty-seventh inlet 221 of thethird pump 220; - a twenty-
seventh outlet 222 of thethird pump 220 with a twenty-seventh inlet 234 of a cold channel 235 of theexchanger 230; - a twenty-
eighth outlet 236 from the cold channel 235 with a twenty-eighth inlet 253 from thecooling unit 250; - a twenty-
ninth outlet 254 of thecooling unit 250 with a twenty-ninth inlet 192 of thesecond compressor 190.
- bien qu’ici le premier fluide comprenne une proportion d’isotope 4 d’Hélium supérieure à 99,9 %, l’invention s’applique également à d’autres types de premier fluide comme par exemple un premier fluide comprenant une proportion de l’isotope 3 d’hélium supérieure à 99,9% et avec une température adaptée de pré-refroidissement par
la source 330 ; - bien qu’ici les échangeurs soient des échangeurs à tubes à contre-courant, l’invention s’applique également à d’autres types d’échangeurs thermiques, comme par exemple un échangeur à plaques, ou à tubes, les flux chaud et froid pouvant être à contre-courant ou non ;
- la pompe cryogénique peut être une pompe de type turbo moléculaire, « Holweck », à roue centrifuge ou toute combinaison de ces technologies;
- bien qu’ici la troisième pompe ait été représentée entre deux réservoirs de séparation, l’invention s’applique également à d’autres implantations de la deuxième pompe en aval de la vingtième sortie ;
- bien qu’ici on ait décrit un troisième détendeur, un troisième réservoir et un troisième échangeur thermique dans le cadre d’un troisième mode de réalisation qui comprend un deuxième détendeur et un deuxième réservoir, l’invention s’applique également à un troisième détendeur, un troisième réservoir et un troisième échangeur thermique couplés à un circuit dépourvu de deuxième détendeur et de deuxième réservoir ;
- le deuxième échangeur thermique peut être du type échangeur à fluide ou à conduction, par exemple un réservoir comprenant au moins une paroi thermiquement conductrice sur laquelle est rapporté un élément à refroidir, ou sur laquelle est fixée une tresse thermiquement conductrice ;
- bien qu’ici le dispositif comprenne un deuxième échangeur thermique, l’invention s’applique également à d’autres types d’objets à refroidir, comme par exemple une puce électronique directement en échange thermique avec le premier réservoir par conduction ou bien encore indirectement en échange thermique avec le premier réservoir à l’aide d’un fluide caloporteur ou d’un milieu caloporteur solide pouvant être métallique ;
- bien qu’ici l’unité de refroidissement comprenne un unique premier échangeur pour transférer des calories depuis un premier canal chaud vers un premier canal froid qui sont reliés au circuit de travail ainsi qu’un unique deuxième échangeur thermique comprenant un deuxième canal chaud relié au premier circuit de travail et un deuxième canal froid relié à une source froide externe, l’invention s’applique également à une unité de refroidissement comprenant deux ou plus premiers échangeurs pour échanger des calories entre deux portions du premier circuit et/ou deux ou plus deuxièmes échangeurs reliés à une ou plusieurs sources froides externes ;
- La source froide 330 peut être comprise en tout ou partie dans l’enceinte 5.
- La source froide 330 peut être un réfrigérateur à gaz de cycle, un tube à gaz pulsé, ou toute autre source froide appropriée ;
- le canal froid 322 peut être remplacé par un bain de liquide cryogénique, à la température d'évaporation souhaitée, dans lequel baigne le
canal chaud 321. - le canal froid 322 peut être remplacé par un lien thermique souple (cuivre ou autre métal conducteur thermique) pour connecter mécaniquement la source froide au canal chaud 321 et le refroidir par conduction.
- les compresseurs 20
et 190 peuvent être des organes de transfert quelconque, tel qu’une conduite, une pompe, un échangeur de chaleur, ou une autre machine adaptée ; - bien qu’ici, un compresseur assure la circulation du fluide de travail dans le circuit, l’invention s’applique également à d’autres types d’organes de transfert comme par exemple un simple tuyau ou un échangeur de chaleur. En effet, la pompe cryogénique 80 peut être suffisante pour pomper le fluide dans l’ensemble des conduites du circuit. Cette configuration peut être obtenue après un démarrage du dispositif qui comporte un organe de transfert chaud tel qu’un compresseur. C’est à dire que le dispositif est démarré grâce au compresseur 20 ( ou 190) puis le compresseur est mis hors circuit ou by-passé par un échangeur froid qui peut être configuré pour échanger thermiquement avec une source froide en vue d’un pré-refroidissement ;
- bien qu’ici la première et la deuxième unités de refroidissement utilisent une unique source froide , l’invention s’applique également à des unités de refroidissement utilisant des sources froides dédiées ;
- bien qu’ici le fluide 11 ressorte de l’unité de refroidissement 300 à une température d’environ 15 K, l’invention s’applique également à une température de sortie du fluide 11 de 10 K, ou comprise entre 5 K et 10 K, notamment entre 6 K et 7 K.
- although here the first fluid comprises a proportion of Helium 4 isotope greater than 99.9%, the invention also applies to other types of first fluid such as for example a first fluid comprising a proportion of isotope 3 of helium greater than 99.9% and with an adapted temperature of pre-cooling by the
source 330; - although here the exchangers are counter-current tube exchangers, the invention also applies to other types of heat exchangers, such as for example a plate or tube exchanger, the hot and cold flows may or may not be countercurrent;
- the cryogenic pump can be a pump of the turbomolecular, “Holweck” or centrifugal impeller type or any combination of these technologies;
- although here the third pump has been represented between two separation tanks, the invention also applies to other locations of the second pump downstream of the twentieth outlet;
- although here a third expansion valve, a third reservoir and a third heat exchanger have been described in the context of a third embodiment which comprises a second expansion valve and a second reservoir, the invention also applies to a third expansion valve , a third reservoir and a third heat exchanger coupled to a circuit devoid of a second expansion valve and a second reservoir;
- the second heat exchanger can be of the fluid or conduction exchanger type, for example a tank comprising at least one thermally conductive wall on which is attached an element to be cooled, or on which is fixed a thermally conductive braid;
- although here the device comprises a second heat exchanger, the invention also applies to other types of objects to be cooled, such as for example an electronic chip directly in heat exchange with the first reservoir by conduction or even indirectly in heat exchange with the first reservoir using a heat transfer fluid or a solid heat transfer medium which may be metallic;
- although here the cooling unit comprises a single first heat exchanger for transferring calories from a first hot channel to a first cold channel which are connected to the working circuit as well as a single second heat exchanger comprising a second hot channel connected to the first working circuit and a second cold channel connected to an external cold source, the invention also applies to a cooling unit comprising two or more first exchangers for exchanging calories between two portions of the first circuit and/or two or more second exchangers connected to one or more external cold sources;
- The
cold source 330 can be included in whole or in part in theenclosure 5. - The
cold source 330 can be a cycle gas refrigerator, a pulsed gas tube, or any other suitable cold source; - the
cold channel 322 can be replaced by a bath of cryogenic liquid, at the desired evaporation temperature, in which thehot channel 321 bathes. - the
cold channel 322 can be replaced by a flexible thermal link (copper or other thermally conductive metal) to mechanically connect the cold source to thehot channel 321 and cool it by conduction. - the
compressors - although here, a compressor ensures the circulation of the working fluid in the circuit, the invention also applies to other types of transfer members such as for example a simple pipe or a heat exchanger. Indeed, the
cryogenic pump 80 may be sufficient to pump the fluid in all the conduits of the circuit. This configuration can be obtained after starting the device which comprises a hot transfer member such as a compressor. That is to say that the device is started thanks to the compressor 20 (or 190) then the compressor is switched off or bypassed by a cold exchanger which can be configured to exchange heat with a cold source for a pre - cooling; - although here the first and second cooling units use a single cold source, the invention also applies to cooling units using dedicated cold sources;
- although here the fluid 11 leaves the
cooling unit 300 at a temperature of approximately 15 K, the invention also applies to an outlet temperature of thefluid 11 of 10 K, or between 5 K and 10 K, especially between 6 K and 7 K.
Claims (17)
- Dispositif de réfrigération (1) comprenant un premier circuit de travail (10) pour faire circuler un premier fluide de travail (11), le premier circuit de travail (10) comprenant les éléments suivants reliés en série par un premier réseau de conduites (70) :
- un premier organe de transfert (20) du fluide de travail (11) ;
- une unité de refroidissement (300) comprenant un premier échangeur thermique (310) comportant un premier canal chaud (311) et un premier canal froid (312) reliés au premier circuit de travail (10), l’unité de refroidissement (300) comportant également un deuxième échangeur thermique (320) comprenant un deuxième canal chaud (321) relié au premier circuit de travail (10) et un deuxième canal froid (322) relié à une première source froide (330);
- un troisième échangeur thermique (30) comprenant un troisième canal chaud (31) et un troisième canal froid (32) ;
- un premier détendeur (40) de type Joule-Thompson ;
- un premier réservoir (50) configuré pour être en échange thermique avec un objet à refroidir ;
- a first transfer member (20) of the working fluid (11);
- a cooling unit (300) comprising a first heat exchanger (310) comprising a first hot channel (311) and a first cold channel (312) connected to the first working circuit (10), the cooling unit (300) comprising also a second heat exchanger (320) comprising a second hot channel (321) connected to the first working circuit (10) and a second cold channel (322) connected to a first cold source (330);
- a third heat exchanger (30) comprising a third hot channel (31) and a third cold channel (32);
- a first regulator (40) of the Joule-Thompson type;
- a first tank (50) configured to be in heat exchange with an object to be cooled ;
- Dispositif selon la revendication 1, dans lequel
le premier réseau de conduites (70) est agencé pour relier :- une première sortie (21) de l’organe de transfert (20) de laquelle est refoulé le premier fluide de travail (11) avec une première entrée (313) du premier canal chaud (311) ;
- une deuxième sortie (314) du premier canal chaud (311) avec une deuxième entrée (323) du deuxième canal chaud (321) ;
- une troisième sortie (324) du canal chaud (321) à une troisième entrée (33) du troisième canal chaud (31) ;
- une quatrième sortie (34) du troisième canal chaud (31) avec une quatrième entrée (41) du premier détendeur (40) ;
- une cinquième sortie (42) du premier détendeur (40) avec une cinquième entrée (51) du premier réservoir (50) ;
- une sixième sortie (52) du premier réservoir (50) avec une sixième entrée (35) du troisième canal froid (32) ;
- une septième sortie (36) du troisième canal froid (32) avec une huitième entrée (22) du premier compresseur (20) par laquelle le premier fluide de travail (11) est aspiré ;
the first pipe network (70) is arranged to connect:- a first outlet (21) of the transfer member (20) from which the first working fluid (11) is discharged with a first inlet (313) of the first hot runner (311);
- a second output (314) of the first hot runner (311) with a second input (323) of the second hot runner (321);
- a third outlet (324) of the hot runner (321) to a third inlet (33) of the third hot runner (31);
- a fourth outlet (34) of the third hot runner (31) with a fourth inlet (41) of the first expander (40);
- a fifth outlet (42) from the first regulator (40) with a fifth inlet (51) from the first tank (50);
- a sixth outlet (52) from the first reservoir (50) with a sixth inlet (35) from the third cold channel (32);
- a seventh outlet (36) of the third cold channel (32) with an eighth inlet (22) of the first compressor (20) through which the first working fluid (11) is sucked;
- Dispositif de réfrigération (1) selon la revendication 2, dans lequel le premier organe de pompage (80) est directement relié à la huitième entrée (22). A refrigeration device (1) according to claim 2, wherein the first pumping member (80) is directly connected to the eighth inlet (22).
- Dispositif de réfrigération (1) selon la revendication 2 ou 3, dans lequel le premier organe de pompage (80) est situé en aval de la septième sortie (36).A refrigeration device (1) according to claim 2 or 3, wherein the first pumping member (80) is located downstream of the seventh outlet (36).
- Dispositif de réfrigération (1) selon l’une quelconque des revendications 2 à 4, comprenant un deuxième détendeur (90) de type Joule-Thompson et un deuxième réservoir (100), le deuxième détendeur (90) comprenant une dixième entrée (91) en communication fluidique avec le premier circuit (10) en aval de la troisième sortie (324) et une dixième sortie (92) en communication fluidique avec une onzième entrée (101) du deuxième réservoir (100), le deuxième réservoir (100) comprenant une onzième sortie (102) en communication fluidique avec la huitième entrée (22), le deuxième réservoir (100) comprenant également un premier soutirage (103) de fluide de travail (11) en phase liquide en communication fluidique avec le premier circuit (10) en amont de la troisième entrée (33).Refrigeration device (1) according to any one of Claims 2 to 4, comprising a second expansion valve (90) of the Joule-Thompson type and a second reservoir (100), the second expansion valve (90) comprising a tenth inlet (91) in fluid communication with the first circuit (10) downstream of the third outlet (324) and a tenth outlet (92) in fluid communication with an eleventh inlet (101) of the second reservoir (100), the second reservoir (100) comprising an eleventh outlet (102) in fluid communication with the eighth inlet (22), the second reservoir (100) also comprising a first withdrawal (103) of working fluid (11) in liquid phase in fluid communication with the first circuit (10 ) upstream of the third inlet (33).
- Dispositif de réfrigération selon l’une quelconque des revendications 2 à 5, comprenant un troisième détendeur (110) de type Joule-Thompson, un troisième réservoir (120) et un cinquième échangeur de chaleur (130) comportant un cinquième canal chaud (131) et un cinquième canal froid (132), le troisième détendeur (110) comprenant une douzième entrée (111) en communication fluidique avec le premier circuit (10) en aval de la troisième sortie (324) et une douzième sortie (112) en communication fluidique avec une treizième entrée (121) du troisième réservoir (120), le troisième réservoir (120) comprenant une treizième sortie (122) en communication fluidique avec la huitième entrée (22), le troisième réservoir (120) comprenant également un deuxième soutirage (123) de fluide de travail (11) en phase liquide en communication fluidique avec une quatorzième entrée (133) du cinquième canal chaud (131), une quatorzième sortie (134) du cinquième canal chaud (131) étant en communication fluidique avec le premier circuit (10) en amont de la troisième entrée (33), une quinzième entrée (135) et une quinzième sortie (136) du cinquième canal froid (132) étant en communication fluidique avec le premier circuit (10) en aval de la septième sortie (36).Refrigeration device according to any one of Claims 2 to 5, comprising a third expansion valve (110) of the Joule-Thompson type, a third tank (120) and a fifth heat exchanger (130) comprising a fifth hot channel (131) and a fifth cold channel (132), the third expander (110) comprising a twelfth inlet (111) in fluid communication with the first circuit (10) downstream of the third outlet (324) and a twelfth outlet (112) in communication with a thirteenth inlet (121) of the third reservoir (120), the third reservoir (120) comprising a thirteenth outlet (122) in fluid communication with the eighth inlet (22), the third reservoir (120) also comprising a second draw-off (123) of working fluid (11) in the liquid phase in fluid communication with a fourteenth inlet (133) of the fifth hot runner (131), a fourteenth outlet (134) of the fifth hot runner (131) being in fluid communication with the first circuit (10) upstream of the third inlet (33), a fifteenth inlet (135) and a fifteenth outlet (136) of the fifth cold channel (132) being in fluid communication with the first circuit (10) downstream of the seventh exit (36).
- Dispositif de réfrigération (1) selon l’une quelconque des revendications 2 à 6, comprenant un sixième échangeur de chaleur (150) comportant un sixième canal chaud (151) et un sixième canal froid (152), un quatrième détendeur (160) de type Joule-Thompson et un quatrième réservoir (170), le sixième canal chaud (151) comprenant une seizième entrée (153) en communication fluidique avec le premier circuit de travail (10) entre la première sortie (21) et la troisième entrée (33) et le sixième canal froid (152) comprend une seizième sortie (156) en communication fluidique avec le premier circuit de travail (10) en aval de la cinquième sortie (42).Refrigeration device (1) according to any one of Claims 2 to 6, comprising a sixth heat exchanger (150) comprising a sixth hot channel (151) and a sixth cold channel (152), a fourth expansion valve (160) of Joule-Thompson type and a fourth reservoir (170), the sixth hot runner (151) comprising a sixteenth inlet (153) in fluid communication with the first working circuit (10) between the first outlet (21) and the third inlet ( 33) and the sixth cold channel (152) includes a sixteenth outlet (156) in fluid communication with the first working circuit (10) downstream of the fifth outlet (42).
- Dispositif de réfrigération (1) selon l’une quelconque des revendications précédentes, dans lequel le premier fluide de travail (11) comprend une proportion volumique d’Hélium 4 supérieure ou égale à 99,9%.Refrigeration device (1) according to any one of the preceding claims, in which the first working fluid (11) comprises a volume proportion of Helium 4 greater than or equal to 99.9%.
- Dispositif de réfrigération (1) selon l’une quelconque des revendications précédentes, comprenant un deuxième circuit de travail (180) pour faire circuler un deuxième fluide de travail (181) au moyen d’un deuxième organe de transfert (190) et d’une deuxième pompe cryogénique (220), le deuxième circuit de travail (180) comprenant au moins une première portion (261) de conduite en échange thermique avec le premier réservoir (50). Refrigeration device (1) according to any one of the preceding claims, comprising a second working circuit (180) for circulating a second working fluid (181) by means of a second transfer member (190) and a second cryogenic pump (220), the second working circuit (180) comprising at least a first portion ( 261 ) of pipe in heat exchange with the first tank (50).
- Dispositif de réfrigération (1) selon la revendication 9, dans lequel le deuxième organe de transfert (190) est situé à l’extérieur de l’enceinte (5). Refrigeration device (1) according to Claim 9, in which the second transfer member (190) is located outside the enclosure (5).
- Dispositif de réfrigération (1) selon les revendications 9 et 5, dans lequel le deuxième circuit de travail (180) comprend au moins une deuxième portion (262) de conduite en échange thermique avec le deuxième réservoir (100).Refrigeration device (1) according to Claims 9 and 5, in which the second working circuit (180) comprises at least a second portion (2 6 2) of pipe in heat exchange with the second tank (100).
- Dispositif de réfrigération (1) selon l’une quelconque des revendications 9 à 11, dans lequel le deuxième circuit de travail (180) comprend également un cinquième détendeur (200) de type Joule Thompson.Refrigeration device (1) according to any one of Claims 9 to 11, in which the second working circuit (180) also comprises a fifth expansion valve (200) of the Joule Thompson type.
- Dispositif de réfrigération (1) selon l’une quelconque des revendications 9 à 12 dans lequel le deuxième fluide de travail (181) comprend une proportion volumique d’Hélium 3 supérieure ou égale à 99,9%.Refrigeration device (1) according to any one of Claims 9 to 12, in which the second working fluid (181) comprises a volume proportion of Helium 3 greater than or equal to 99.9%.
- Procédé de réfrigération à l’aide d’un dispositif selon l’une quelconque des revendications précédentes comprenant les étapes suivantes :
– compression du premier fluide de travail ;
- refroidissement du premier fluide de travail,
- détente isenthalpique du premier fluide de travail ;
- séparation du premier fluide de travail en une première phase liquide et une deuxième phase gazeuse ;
– réchauffage du premier fluide ;
- pompage du premier fluide.Refrigeration method using a device according to any one of the preceding claims comprising the following steps:
– compression of the first working fluid;
- cooling of the first working fluid,
- isenthalpic expansion of the first working fluid;
- Separation of the first working fluid into a first liquid phase and a second gaseous phase;
– heating of the first fluid;
- Pumping the first fluid. - Procédé selon la revendication 14, dans lequel l’étape de détente isenthalpique du premier fluide de travail est réalisée de manière à amener le premier fluide de travail à une température comprise entre cinq cent millikelvins et 4,5 Kelvins avant l’étape de séparation.A method according to claim 14, wherein the step of isenthalpic expansion of the first working fluid is carried out so as to bring the first working fluid to a temperature between five hundred millikelvins and 4.5 Kelvins before the separation step.
- Procédé de réfrigération à l’aide d’un dispositif selon l’une quelconque des revendications 9 à 13 comprenant les étapes suivantes :
– compression du deuxième fluide de travail ;
- refroidissement du deuxième fluide de travail,
- détente isenthalpique du deuxième fluide de travail ;
- séparation du deuxième fluide de travail en une première phase liquide et une deuxième phase gazeuse ;
– réchauffage du deuxième fluide ;
- pompage du deuxième fluide.Refrigeration method using a device according to any one of claims 9 to 13 comprising the following steps:
– compression of the second working fluid;
- cooling of the second working fluid,
- isenthalpic expansion of the second working fluid;
- Separation of the second working fluid into a first liquid phase and a second gaseous phase;
– heating of the second fluid;
- Pumping of the second fluid. - Procédé selon la revendication 16, dans lequel l’étape de détente isenthalpique du deuxième fluide de travail est réalisée de manière à amener le deuxième fluide de travail à une température comprise entre trois cents et sept cents millikelvin avant l’étape de séparation. A method according to claim 16, wherein the step of isenthalpic expansion of the second working fluid is carried out so as to bring the second working fluid to a temperature between three hundred and seven hundred millikelvin before the separation step.
Priority Applications (3)
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CN202280071511.5A CN118159788A (en) | 2021-11-16 | 2022-10-07 | Cryogenic pumping system and innovative integration for sub-kelvin cryo-temperatures below 1.5K |
AU2022393096A AU2022393096A1 (en) | 2021-11-16 | 2022-10-07 | Cryogenic pumping system and innovative integration for sub-kelvin cryogenics below 1.5k |
CA3236379A CA3236379A1 (en) | 2021-11-16 | 2022-10-07 | Cryogenic pumping system and innovative integration for sub-kelvin cryogenics below 1.5k |
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FRFR2112093 | 2021-11-16 | ||
FR2112093A FR3129201B1 (en) | 2021-11-16 | 2021-11-16 | Cryogenic pumping system and innovative integration for Sub Kelvin cryogenics below 1.5K |
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WO2023088607A1 true WO2023088607A1 (en) | 2023-05-25 |
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PCT/EP2022/077908 WO2023088607A1 (en) | 2021-11-16 | 2022-10-07 | Cryogenic pumping system and innovative integration for sub-kelvin cryogenics below 1.5k |
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CN (1) | CN118159788A (en) |
AU (1) | AU2022393096A1 (en) |
CA (1) | CA3236379A1 (en) |
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WO (1) | WO2023088607A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4672823A (en) * | 1984-12-17 | 1987-06-16 | Centre National De La Recherche Scientifique | Dilution cryostat |
JP2001304709A (en) * | 2000-04-20 | 2001-10-31 | Taiyo Toyo Sanso Co Ltd | Dilution refrigerating machine |
US20150345834A1 (en) * | 2013-01-03 | 2015-12-03 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Refrigeration and/or liquefaction device, and corresponding method |
FR3107586A1 (en) * | 2020-02-21 | 2021-08-27 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Dilution refrigeration device and method |
-
2021
- 2021-11-16 FR FR2112093A patent/FR3129201B1/en active Active
-
2022
- 2022-10-07 WO PCT/EP2022/077908 patent/WO2023088607A1/en active Application Filing
- 2022-10-07 CA CA3236379A patent/CA3236379A1/en active Pending
- 2022-10-07 CN CN202280071511.5A patent/CN118159788A/en active Pending
- 2022-10-07 AU AU2022393096A patent/AU2022393096A1/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4672823A (en) * | 1984-12-17 | 1987-06-16 | Centre National De La Recherche Scientifique | Dilution cryostat |
JP2001304709A (en) * | 2000-04-20 | 2001-10-31 | Taiyo Toyo Sanso Co Ltd | Dilution refrigerating machine |
US20150345834A1 (en) * | 2013-01-03 | 2015-12-03 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Refrigeration and/or liquefaction device, and corresponding method |
FR3107586A1 (en) * | 2020-02-21 | 2021-08-27 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Dilution refrigeration device and method |
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FR3129201A1 (en) | 2023-05-19 |
FR3129201B1 (en) | 2024-01-19 |
CN118159788A (en) | 2024-06-07 |
CA3236379A1 (en) | 2023-05-25 |
AU2022393096A1 (en) | 2024-06-06 |
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