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1.发明公开公开(公告)号：US20240230168A1
公开(公告)日：2024-07-11
申请号：US18096010
申请日：2023-01-11
申请人： CRYO TECH LTD.
发明人： Alexander Veprik
CPC分类号： F25B9/14 , F25B31/023 , F25B2309/001 , F25B2400/073 , F25B2700/21 , G01J5/061
摘要： A Stirling type cryogenic refrigerator device includes a dual-piston compressor and a pneumatic expander, wherein some of the pneumatic expander is concealed within the body of the dual-piston compressor.
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公开(公告)号：US20230118157A1
公开(公告)日：2023-04-20
申请号：US17503264
申请日：2021-10-16
申请人： CRYO TECH LTD.
发明人： Alexander VEPRIK
摘要： A compressor unit of a refrigeration device includes a compression chamber. A piston is configured to be moved back and forth along an axis to alternately compress and decompress a gas in the chamber. An electromagnetic actuator is configured to drive the piston and includes a stator assembly with a driving coil that is coaxial with the axis and two permanent ring magnets that are radially magnetized identically to one another in a plane that is perpendicular to the axis. The ring magnets are located on opposite sides of the driving coil along the axis. A ferromagnetic shaft is elongated parallel to the axis and connected to the piston. When an alternating electrical current flows through the coil, the shaft is magnetized such that the shaft is alternately attracted to one of the ring magnets and repelled by the other to drive the piston back and forth.
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公开(公告)号：US20230017414A1
公开(公告)日：2023-01-19
申请号：US17374996
申请日：2021-07-14
申请人： CRYO TECH LTD.
发明人： Alexander VEPRIK
摘要： A compressor unit of a cryogenic refrigeration device includes a compression chamber that is connectable via a transfer line to an expander unit. A piston is configured to alternately compress and decompress a gaseous working agent in the compression chamber. An electromagnetic actuator includes a stator assembly with a driving coil that is wound about the longitudinal axis and that is enclosed within a toroidal back iron except for a coaxial cylindrical gap in a radially outward facing surface. A movable assembly connected to the piston includes two movable permanent magnets separated by a ferromagnetic spacer radially exterior to the stator assembly. The movable magnets are magnetized parallel to the longitudinal axis and opposite to one another such that an alternating electrical current in the driving coil causes the movable assembly to parallel to the longitudinal axis to periodically drive the piston into and out of the compression chamber.
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公开(公告)号：US11209192B2
公开(公告)日：2021-12-28
申请号：US16525535
申请日：2019-07-29
申请人： CRYO TECH LTD.
发明人： Alexander Veprik
摘要： A split Stirling cryogenic refrigerator device may include a resonant pneumatic expander comprising a resonant displacer assembly supported by a spring and configured to slide back and forth along a longitudinal axis within a housing of the resonant pneumatic expander, the resonant displacer assembly comprising a tubular displacer containing a regenerator and coupled to a sealing piston, and a driving piston coupled to the sealing piston by an elongated radially compliant and axially rigid connecting member.
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公开(公告)号：US20210033313A1
公开(公告)日：2021-02-04
申请号：US16525535
申请日：2019-07-29
申请人： CRYO TECH LTD.
发明人： Alexander VEPRIK
摘要： A split Stirling cryogenic refrigerator device may include a resonant pneumatic expander comprising a resonant displacer assembly supported by a spring and configured to slide back and forth along a longitudinal axis within a housing of the resonant pneumatic expander, the resonant displacer assembly comprising a tubular displacer containing a regenerator and coupled to a sealing piston, and a driving piston coupled to the sealing piston by an elongated radially compliant and axially rigid connecting member.
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6.发明公开公开(公告)号：US20240128118A1
公开(公告)日：2024-04-18
申请号：US18534711
申请日：2023-12-10
申请人： CRYO TECH LTD.
发明人： Alexander VEPRIK
IPC分类号： H01L21/683 , B23B31/30 , F25B9/14
CPC分类号： H01L21/6838 , B23B31/307 , F25B9/145 , F25B9/14 , F25B2309/003
摘要： An expander unit of a cryogenic refrigerator device includes a moving assembly with a porous regenerative heat exchanger configured to move back and forth along a longitudinal axis. A magnetic spring assembly includes a stationary magnetic assembly fixed to the cold finger base that includes one or more magnetic rings fixedly arranged about a bore. A movable magnetic assembly includes one or more movable magnetic rings fixed to the moving assembly, An outer lateral dimension of each of the movable magnetic rings is less than an inner lateral dimension of the bore. The stationary magnetic assembly and the movable magnetic assembly are configured such that, when the moving assembly is displaced along the longitudinal axis from an equilibrium position, attractive and repulsive forces between the movable magnetic assembly and the stationary magnetic assembly yield a restoring force that is directed to restore the moving assembly to the equilibrium position.
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公开(公告)号：US11384964B2
公开(公告)日：2022-07-12
申请号：US16504365
申请日：2019-07-08
申请人： CRYO TECH LTD.
发明人： Alexander Veprik
IPC分类号： F25B9/14
摘要： Integral linear cryogenic Stirling refrigerator comprised of the free piston positive displacement pressure wave generator, the moving assembly of which is connected to the free piston displacer by the dynamic “spring-mass-spring” mechanical phase shifter the mechanical properties of which (spring rates and weight) are selected to provide a predetermined phase lag of motion of the displacer piston relative to the moving assembly of pressure wave generator.
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公开(公告)号：US20220250169A1
公开(公告)日：2022-08-11
申请号：US17325334
申请日：2021-05-20
申请人： CRYO TECH LTD.
发明人： Alexander VEPRIK
摘要： An expander unit of a cryogenic refrigerator device includes a moving assembly with a porous regenerative heat exchanger configured to move back and forth along a longitudinal axis. A magnetic spring assembly includes a stationary magnetic assembly fixed to the cold finger base that includes one or more magnetic rings fixedly arranged about a bore. A movable magnetic assembly includes one or more movable magnetic rings fixed to the moving assembly. An outer lateral dimension of each of the movable magnetic rings is less than an inner lateral dimension of the bore. The stationary magnetic assembly and the movable magnetic assembly are configured such that, when the moving assembly is displaced along the longitudinal axis from an equilibrium position, attractive and repulsive forces between the movable magnetic assembly and the stationary magnetic assembly yield a restoring force that is directed to restore the moving assembly to the equilibrium position.
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公开(公告)号：US20240280298A1
公开(公告)日：2024-08-22
申请号：US18112503
申请日：2023-02-22
申请人： CRYO TECH LTD.
发明人： Alexander VEPRIK
IPC分类号： F25B9/14
CPC分类号： F25B9/14 , F25B2309/001
摘要： An integral cryocooler includes a cold finger within an elongated space defined inside an elongated housing. A tip of the cold finger freely protrudes outside an opening at an exterior end of the housing, and a root of the cold finger is supported in a cantilevered manner at an interior end of the housing. A cryocooler cover sealingly connected to the housing forms a pressure vessel. A ferromagnetic mover is coaxially fixed to a movable capped cylinder that is located within the pressure vessel and surrounds the interior end of the housing to form a compression space. A stator is located outside the pressure vessel and includes two cylindrical permanent magnets with opposite and axial magnetization that surround a driving coil. When an alternating electrical current flows through the driving coil, the movable capped cylinder is moved axially back and forth to alternately compress and expand the compression space.
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公开(公告)号：US11854858B2
公开(公告)日：2023-12-26
申请号：US17325334
申请日：2021-05-20
申请人： CRYO TECH LTD.
发明人： Alexander Veprik
IPC分类号： F25B9/14 , H01L21/683 , B23B31/30
CPC分类号： H01L21/6838 , B23B31/307 , F25B9/145 , F25B9/14 , F25B2309/003
摘要： An expander unit of a cryogenic refrigerator device includes a moving assembly with a porous regenerative heat exchanger configured to move back and forth along a longitudinal axis. A magnetic spring assembly includes a stationary magnetic assembly fixed to the cold finger base that includes one or more magnetic rings fixedly arranged about a bore. A movable magnetic assembly includes one or more movable magnetic rings fixed to the moving assembly. An outer lateral dimension of each of the movable magnetic rings is less than an inner lateral dimension of the bore. The stationary magnetic assembly and the movable magnetic assembly are configured such that, when the moving assembly is displaced along the longitudinal axis from an equilibrium position, attractive and repulsive forces between the movable magnetic assembly and the stationary magnetic assembly yield a restoring force that is directed to restore the moving assembly to the equilibrium position.
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