CN113686059B - JT/GM refrigerator precooled by planar seal valve and heat regenerator and refrigeration method - Google Patents
JT/GM refrigerator precooled by planar seal valve and heat regenerator and refrigeration method Download PDFInfo
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- CN113686059B CN113686059B CN202110875079.2A CN202110875079A CN113686059B CN 113686059 B CN113686059 B CN 113686059B CN 202110875079 A CN202110875079 A CN 202110875079A CN 113686059 B CN113686059 B CN 113686059B
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- 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
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/06—Superheaters
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- 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
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- 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
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- 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
- F25B41/40—Fluid line arrangements
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- Mechanical Engineering (AREA)
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- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a JT/GM refrigerator precooled by a plane sealing valve and a heat regenerator and a refrigeration method, the JT/GM refrigerator precools by using the plane sealing valve and the heat regenerator, the JT/GM refrigerator comprises a compressor, a pipeline, a gas storage cavity, a primary heat regenerator and a throttling refrigerator, wherein the compressor is communicated with the gas storage cavity through the pipeline, a valve group is arranged in an inner cavity of the gas storage cavity, the valve group comprises a fixed valve and a rotary valve, three exhaust holes are distributed in the circumference of the inner cavity of the fixed valve and are communicated with the rotary valve, second air inlet holes corresponding to the exhaust holes are formed in the surface phase angles of the rotary valve, the valve group is communicated with the primary heat regenerator through the pipeline, the lower end of the primary heat regenerator is communicated with the secondary heat regenerator through the pipeline, and the lower end of the secondary heat regenerator is communicated with the throttling refrigerator through the pipeline, so that the refrigeration efficiency is effectively improved, the effective refrigeration quantity is improved, the practicability of the device is greatly improved, an external precooling component is omitted, and a set of equipment is structurally integrated into a more compact structure.
Description
Technical Field
The invention relates to the field of refrigeration equipment, in particular to a JT/GM refrigerator precooled by a planar sealing valve and a regenerator and a refrigeration method.
Background
The refrigerating machine is a machine which transfers heat of a cooled object with a lower temperature to an environment medium to obtain cold, and the main performance indexes include working temperature (evaporation temperature and condensation temperature for a vapor compression refrigerating machine, temperature of the cooled object and temperature of a cooling medium for a gas compression refrigerating machine and a semiconductor refrigerating machine), refrigerating capacity (heat removed from the cooled object in a unit time of the refrigerating machine), power or heat consumption, refrigerating coefficient (index for measuring the economy of the compression refrigerating machine, namely cold obtained by consuming a unit function), thermodynamic coefficient (index for measuring the economy of the absorption type refrigerating machine and the steam injection type refrigerating machine, namely cold obtained by consuming a unit heat) and the like.
Most of the existing refrigerators adopt JT/GM refrigerators which need an external throttle valve and an external precooling unit, and the system structure is complex and cannot be produced in a production mode.
Chinese patent 105783319B discloses a low-temperature J-T throttling refrigerator precooled by a regenerative refrigerator, which is formed by a precooling compressor C1, a heat regenerator hot end heat exchanger HX1, a first stage heat regenerator RG1, a first stage cold end heat exchanger HX2, a first stage pulse tube PT1, a first stage pulse tube hot end heat exchanger HX3, a first stage inertia tube I1, a first stage gas reservoir R1, a first stage charging valve V1, a flow-blocking acoustic power transmission component MIAT1, a second stage heat regenerator RG2 and the like.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: a refrigerator requiring no external precooling member and no external throttle valve and a method for refrigerating the refrigerator are provided.
The invention solves the technical problems through the following technical means: the utility model provides an adopt JT GM refrigerator and refrigeration method of plane seal valve and regenerator precooling, includes compressor, pipeline, gas storage chamber, one-level regenerator, throttle refrigerator, the compressor is linked together through pipeline and gas storage chamber, the valves is installed to the inner chamber in gas storage chamber, the valves includes standing valve, rotary valve, three exhaust hole has been seted up in the inner chamber circumference distribution of standing valve, just the exhaust hole all is linked together with the rotary valve, the surperficial phase angle of rotary valve all seted up with the corresponding second inlet port in exhaust hole, form six passageways between standing valve and the rotary valve, just the passageway is the series connection setting, the valves is linked together through pipeline and one-level regenerator, the lower extreme of one-level regenerator has second grade regenerator through pipeline through connection, the lower extreme of second grade regenerator is linked together through pipeline and throttle refrigerator.
The gas conveying channel is integrated by adopting the valve bank, and is in a serial form by being provided with six channels, and the delay channel is arranged in the process of connecting the channels in series; the delay channel has self-closing function, and can reduce pressure of gas, so that refrigeration effect is generated, and the practicability of the equipment is effectively improved.
Preferably: the valve bank is connected with a buffer tank through a pipeline in a through mode, and the lower end of the buffer tank is communicated with the compressor through a pipeline.
Preferably, the following components: when the valve group is opened, the primary heat regenerator, the throttling refrigerator and the buffer tank are communicated with the gas storage cavity, and when the valve group is closed, the primary heat regenerator, the throttling refrigerator and the buffer tank are separated from the gas storage cavity.
Preferably, the following components: and a first air inlet is formed in the rear end of the fixed valve and communicated with the rotary valve.
Preferably, the following components: at least one through hole is respectively formed in the two sides of the fixed valve, and the through holes are communicated with the exhaust holes.
Preferably: and the inner cavity of the rotary valve is positioned among the plurality of second air inlet holes and is provided with an oblong valve hole corresponding to the first air inlet hole.
Preferably: the valve group further comprises a driving connecting hole, a driving mechanism is fixedly connected to the outer side of the pipeline, and the output end of the driving mechanism is connected with the driving connecting hole.
Preferably, the following components: and delay channels are arranged between channels formed between the exhaust holes and the second air inlet holes.
Preferably: the primary heat regenerator performs reciprocating motion through an external driving mechanism, and the secondary heat regenerator is connected with the primary heat regenerator and driven to perform reciprocating motion together.
The invention also provides a JT/GM refrigerator precooled by a planar seal valve and a regenerator and a refrigeration method, which are characterized by comprising the following steps: high-pressure helium gas provided by a compressor enters an inner cavity of a pipeline and is controlled by a valve bank, when the valve bank is opened, the high-pressure helium gas enters an inner cavity of a primary heat regenerator to carry out adiabatic expansion, a first refrigeration effect is generated, the temperature of gas after the adiabatic expansion is reduced, and the generated refrigerating capacity is reserved; the gas with the reduced temperature enters the inner cavity of the secondary heat regenerator, and the secondary heat regenerator and the primary heat regenerator are connected together through a pipeline and synchronously perform reciprocating motion, so that the gas entering the inner cavity of the secondary heat regenerator can perform adiabatic expansion again to generate a secondary refrigeration effect; and a part of low-temperature gas passing through the secondary refrigeration effect is conveyed from the inner cavity of the secondary regenerator to the primary regenerator through a pipeline and then returns to the inner cavity of the valve bank, the other part of helium gas with lower temperature enters the inner cavity of the throttling refrigerator, a third-level refrigeration effect is generated in the inner cavity of the throttling refrigerator, the gas coming out of the inner cavity of the throttling refrigerator is conveyed to the inner cavity of the buffer tank through the valve bank, and the gas returns to the inner cavity of the compressor after being buffered in the inner cavity of the buffer tank.
The invention has the advantages that: the gas is directly precooled by the refrigerating capacity generated by the refrigeration of the heat regenerator, an external precooling component is eliminated, and the structure is integrated into a set of equipment, so that the equipment is more compact;
the gas conveying channels are integrated by the valve group, six channels are arranged to form a serial connection mode, and a delay channel is arranged in the process of serial connection of the channels; the delay channel has self-closing function, and effectively generates pressure reduction effect on gas, thereby generating refrigeration effect; the gas precooled by the heat regenerator is subjected to JT refrigeration cycle, so that lower temperature can be obtained, and the practicability of the device is effectively improved.
Drawings
FIG. 1 is a schematic plane view of a JT/GM refrigerator with a planar sealing valve and a regenerator for precooling according to an embodiment of the present invention;
FIG. 2 is a perspective view of a partial structure of a JT/GM refrigerator employing a planar sealing valve and a regenerator for precooling in accordance with an embodiment of the present invention;
FIG. 3 is a perspective view of a partial structure of a JT/GM refrigerator employing a planar sealing valve and a regenerator for precooling in accordance with an embodiment of the present invention;
FIG. 4 is a partial front view of a JT/GM refrigerator employing a planar sealing valve and a regenerator for precooling in accordance with an embodiment of the present invention;
FIG. 5 isbase:Sub>A cross-sectional view A-A of FIG. 4 ofbase:Sub>A JT/GM refrigerator employingbase:Sub>A planar sealing valve and regenerator for precooling in accordance with an embodiment of the present invention;
FIG. 6 is a cross-sectional view B-B of FIG. 4 of a JT/GM refrigerator employing a planar sealing valve and regenerator for precooling in accordance with an embodiment of the present invention;
fig. 7 is a schematic diagram of the operation of a JT/GM refrigerator using a planar sealing valve and regenerator pre-cooling in accordance with an embodiment of the present invention.
In the figure: 1-a compressor; 2-a pipeline; 3-gas storage cavity; 4-a valve bank; 41-a fixed valve; 411-a first intake hole; 412-a via; 413-vent hole; 42-rotary valve; 421-a second air inlet hole; 422-valve hole; 43-drive connection hole; 5-a drive mechanism; 6-first-stage heat regenerator; 7-a secondary heat regenerator; 8-throttling the refrigerator; 9-buffer tank.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the embodiment discloses a JT/GM refrigerator using a planar seal valve and a regenerator for precooling, which includes a compressor 1, a pipeline 2, a gas storage cavity 3, a valve bank 4, a driving mechanism 5, a primary regenerator 6, a secondary regenerator 7, a throttling refrigerator 8, and a buffer tank 9.
Referring to fig. 1, a compressor 1 is communicated with a gas storage cavity 3 through a pipeline 2, and a valve bank 4 is installed in the inner cavity of the gas storage cavity 3.
Referring to fig. 2 to 6, the valve set 4 includes a fixed valve 41 and a rotary valve 42, the fixed valve 41 and the rotary valve 42 are both circular structures and are of an integrated structure, a first air inlet 411 is formed at the rear end of the fixed valve 41, the first air inlet 411 is communicated with the rotary valve 42, at least one through hole 412 is formed at each of two sides of the fixed valve 41, three exhaust holes 413 are distributed on the circumference of the inner cavity of the fixed valve 41, and the through holes 412 are communicated with the exhaust holes 413;
the inner cavity of the rotary valve 42 is provided with oblong valve holes 422 corresponding to the first air inlet holes 411 between the plurality of second air inlet holes 421, and the surface phase angles of the rotary valve 42 are provided with the second air inlet holes 421 corresponding to the air outlet holes 413.
In this embodiment, the oblong valve hole 422 in the inner cavity of the rotary valve 42 and the three through holes 412 distributed on the circumference of the rotary valve 42 are combined into three air inlet channels, and then three second air inlet holes 421 at the surface phase angle of the rotary valve 42 and the three through holes 412 are combined into three exhaust channels, so that six channels are formed by integration and are connected in series;
in this embodiment, the fixed valve 41 is kept stationary, the rotary valve 42 performs rotation movement, six different passages are sequentially opened and closed to form a delay passage, and the air inlet passage is opened and closed in a set time according to different designed angle directions, so that the delay passage provides a self-closing function, the pressure reduction effect on the gas is effectively achieved, and the practicability of the device is greatly improved.
In this embodiment, the valve set 4 further includes a driving connection hole 43, the outer side of the air distribution chamber 3 is connected to a driving mechanism 5, and the output end of the driving mechanism 5 is connected to a driving connection hole 46, so as to drive the valve to move periodically.
Referring to fig. 1, the valve set 4 is communicated with a primary heat regenerator 6 through a pipeline 2, and a secondary heat regenerator 7 is connected to the lower end of the primary heat regenerator 6 through the pipeline 2.
In this embodiment, the primary heat regenerator 6 performs reciprocating motion by an external driving mechanism, and the secondary heat regenerator 7 is connected to the primary heat regenerator 6 and driven to perform reciprocating motion, thereby effectively improving the refrigeration effect of the device.
Referring to fig. 1, the lower end of a secondary heat regenerator 7 is communicated with a throttling refrigerator 8 through a pipeline 2, a valve group 4 is connected with a buffer tank 9 through the pipeline 2, and the lower end of the buffer tank 9 is communicated with a compressor 1 through the pipeline 2.
In this embodiment, when the valve group 4 is opened, the primary heat regenerator 6, the throttling refrigerator 8 and the buffer tank 9 are all communicated with the gas storage cavity 3, and when the valve group 4 is closed, the primary heat regenerator 6, the throttling refrigerator 8 and the buffer tank 9 are all separated from the gas storage cavity 3 and are disconnected
The method for refrigerating by using the refrigerating machine comprises the following steps: high-pressure helium gas provided by a compressor 1 enters an inner cavity of a pipeline 2 and is controlled by a valve group 4, when the valve group 4 is opened, the high-pressure helium gas enters an inner cavity of a primary heat regenerator 6 to carry out adiabatic expansion, a first refrigeration effect is generated, the temperature of gas after adiabatic expansion is reduced, and the generated refrigerating capacity is reserved; the gas with reduced temperature enters the inner cavity of the secondary heat regenerator 7, and the secondary heat regenerator 7 and the primary heat regenerator 6 are connected together through the pipeline 2 and synchronously perform reciprocating motion, so that the gas entering the inner cavity of the secondary heat regenerator 7 can perform adiabatic expansion again to generate a secondary refrigeration effect; and a part of low-temperature gas passing through the secondary refrigeration effect is conveyed from the inner cavity of the secondary regenerator 7 to the primary regenerator 6 through the pipeline 2 and then returns to the inner cavity of the valve bank 4, the other part of helium gas with lower temperature enters the inner cavity of the throttling refrigerator 8, a third-level refrigeration effect is generated in the inner cavity of the throttling refrigerator 8, the gas coming out of the inner cavity of the throttling refrigerator 8 is conveyed to the inner cavity of the buffer tank 9 through the valve bank 4, and the gas returns to the inner cavity of the compressor 1 after being buffered in the inner cavity of the buffer tank 9.
The working principle is as follows: referring to fig. 7, by starting the compressor 1, high-pressure helium enters the inner cavity of the gas storage cavity 3 through the pipeline 2, and then the valve set 4 is opened by the starting driving mechanism 5, the high-pressure helium received from the inner cavity of the compressor 1 enters the inner cavity of the primary heat regenerator 6 through the first air inlet 411, the exhaust hole 413 and the second air inlet 421 in sequence to perform adiabatic expansion, so as to generate refrigeration capacity, because the primary heat regenerator 6 is connected with the secondary heat regenerator 7, the driving mechanism outside the primary heat regenerator 6 drives the secondary heat regenerator 7 to synchronously perform reciprocating motion, so as to retain the generated refrigeration capacity, effectively enable the next incoming high-pressure normal-temperature helium to be cooled into high-pressure low-temperature helium by the refrigeration capacity retained by the heat regenerator, and after the high-pressure low-temperature helium is adiabatically expanded, the refrigeration capacity with lower temperature can be generated, meanwhile, the low-pressure low-temperature helium gas is changed into low-pressure low-temperature helium gas, a part of low-temperature gas is conveyed from the inner cavity of the secondary heat regenerator 7 to the primary heat regenerator 6 through the pipeline 2 and then returns to the inner cavity of the valve group 4, the other part of lower-temperature helium gas enters the inner cavity of the throttling refrigerator 8, a third-level refrigeration effect is generated in the inner cavity of the throttling refrigerator 8, the gas from the inner cavity of the throttling refrigerator 8 is conveyed to the inner cavity of the buffer tank 9 through the valve group 4, the gas returns to the inner cavity of the compressor 1 after being buffered in the inner cavity of the buffer tank 9, the refrigeration efficiency is effectively improved, the effective refrigeration quantity is improved, and the practicability of the device is greatly improved; can effectively reduce the pressure of the gas, thereby generating refrigeration effect and effectively improving the practicability of the equipment.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. The utility model provides an adopt JT GM refrigerator of plane seal valve and regenerator precooling, a serial communication port, including compressor (1), pipeline (2), gas storage chamber (3), one-level regenerator (6), throttle refrigerator (8), compressor (1) is linked together through pipeline (2) and gas storage chamber (3), valves (4) are installed to the inner chamber of gas storage chamber (3), valves (4) have buffer tank (9) through pipeline (2) through-connection, the lower extreme of buffer tank (9) is linked together through pipeline (2) and compressor (1), valves (4) are including fixed valve (41), rotary valve (42), three exhaust hole (413) have been seted up in the inner chamber circumference distribution of fixed valve (41), just exhaust hole (413) all are linked together with rotary valve (42), first inlet port (411) have been seted up to the rear end of fixed valve (41), first inlet port (411) are linked together with rotary valve (42), at least one through-hole (412) have all been seted up to the both sides of fixed valve (41), through-hole (412) all are linked together with exhaust hole (413), the second inlet port (421) that all set up between second inlet port (413) and second inlet port (421), second inlet port (421) are formed between second channel (413), the second inlet port (421) corresponding, the second inlet port (413) are all set up to the second inlet port (413), the second inlet port (413) and the second inlet port (413) are seted up to the second inlet port (413) and the second inlet port (413) are all set up to the second inlet port (413) and the second inlet port (413) are seted up to the second port (413) and the second port (413) are connected to be linked together There is the delay passageway, form six passageways between standing valve (41) and rotary valve (42), just the passageway is the series connection setting, valves (4) are linked together through pipeline (2) and one-level regenerator (6), the lower extreme of one-level regenerator (6) has second grade regenerator (7) through connection through pipeline (2), the lower extreme of second grade regenerator (7) is linked together through pipeline (2) and throttle refrigerator (8).
2. The JT/GM refrigerator using planar seal valve and regenerator for precooling according to claim 1, wherein when the valve set (4) is open, the primary regenerator (6), throttle refrigerator (8), and buffer tank (9) are all in communication with the reservoir chamber (3), and when the valve set (4) is closed, the primary regenerator (6), throttle refrigerator (8), and buffer tank (9) are all isolated from the reservoir chamber (3).
3. The JT/GM refrigerator using a planar sealing valve and a regenerator for precooling according to claim 1, wherein an oblong valve hole (422) corresponding to the first air inlet hole (411) is opened between the second air inlet holes (421) in the inner cavity of the rotary valve (42).
4. The JT/GM refrigerator using a flat seal valve and a regenerator for precooling according to claim 1, wherein the valve set (4) further comprises a driving connection hole (43), a driving mechanism (5) is fixedly connected to the outer side of the duct (2), and the output end of the driving mechanism (5) is connected to the driving connection hole (43).
5. The JT/GM refrigerator with planar seal valve and regenerator pre-cooling in accordance with claim 1, wherein the primary regenerator (6) is reciprocated by an external driving mechanism, and the secondary regenerator (7) is connected to the primary regenerator (6) and is driven to reciprocate.
6. A method of refrigerating using a JT/GM refrigerator with a flat seal valve and regenerator pre-cooled according to any of claims 1 to 5, comprising the steps of: high-pressure helium gas provided by the compressor (1) enters an inner cavity of the pipeline (2) and is controlled by the valve group (4), when the valve group (4) is opened, the high-pressure helium gas enters an inner cavity of the primary heat regenerator (6) to carry out adiabatic expansion, a first refrigeration effect is generated, the temperature of gas after adiabatic expansion is reduced, and the generated refrigerating capacity is reserved; the gas with the reduced temperature enters the inner cavity of the secondary heat regenerator (7), and the secondary heat regenerator (7) is connected with the primary heat regenerator (6) through the pipeline (2) and synchronously moves in a reciprocating manner, so that the gas entering the inner cavity of the secondary heat regenerator (7) can be adiabatically expanded again to generate a secondary refrigeration effect; and a part of low-temperature gas passing through the secondary refrigeration effect is conveyed from the inner cavity of the secondary regenerator (7) to the primary regenerator (6) through the pipeline (2) and then returns to the inner cavity of the valve bank (4), the other part of helium gas with lower temperature enters the inner cavity of the throttling refrigerator (8), a third-stage refrigeration effect is generated in the inner cavity of the throttling refrigerator (8), the gas coming out of the inner cavity of the throttling refrigerator (8) is conveyed to the inner cavity of the buffer tank (9) through the valve bank (4), and the gas returns to the inner cavity of the compressor (1) after being buffered in the inner cavity of the buffer tank (9).
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| CN202110875079.2A CN113686059B (en) | 2021-07-30 | 2021-07-30 | JT/GM refrigerator precooled by planar seal valve and heat regenerator and refrigeration method |
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| CN202110875079.2A CN113686059B (en) | 2021-07-30 | 2021-07-30 | JT/GM refrigerator precooled by planar seal valve and heat regenerator and refrigeration method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4346563A (en) * | 1981-05-15 | 1982-08-31 | Cvi Incorporated | Super critical helium refrigeration process and apparatus |
| CN202562125U (en) * | 2012-05-21 | 2012-11-28 | 东莞光阵显示器制品有限公司 | Two-stage-circulation copious cooling refrigerator |
| JP6147208B2 (en) * | 2014-03-05 | 2017-06-14 | 住友重機械工業株式会社 | Regenerative refrigerator |
| JP6636356B2 (en) * | 2016-02-18 | 2020-01-29 | 住友重機械工業株式会社 | Cryogenic refrigerator |
| CN105675381B (en) * | 2016-03-16 | 2018-05-22 | 安徽万瑞冷电科技有限公司 | Extremely low vibration helium cold accumulation system |
| CN112524885B (en) * | 2020-12-14 | 2025-04-01 | 中科瑞奥能源科技股份有限公司 | Helium refrigeration and liquefaction system and method |
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