• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a chiller (10) operating in the Stirling cycle, of the type comprising: a compressor with a compression piston (50) movable in a compression cylinder (20); a regenerator with a regeneration piston (56) movable in a regeneration cylinder (26); a crankshaft (36) for driving, comprising a crankpin (40) rotatable relative to the compression cylinder and / or the regeneration cylinder; and a compression rod (42) comprising a head (44) mounted on the crankpin and a foot (48) hinged to the compression piston. The regeneration piston is connected to the crankshaft by a connecting element (54) comprising at least three adjacent rigid sections (70, 72, 74) connected by at least two spring type links (76, 78).
    公开号:FR3033630A1
    申请号:FR1500487
    申请日:2015-03-13
    公开日:2016-09-16
    发明作者:Bordays Julien Le
    申请人:Thales SA；
    IPC主号:
    专利说明:

    [0001] The present invention relates to a chiller operating according to the Stirling cycle, of the type comprising: a compressor with a compression piston movable in a compression cylinder, along a first axis; a regenerator with a regenerative piston movable in a regeneration cylinder, along a second axis forming an angle with the first axis; a drive crankshaft, comprising a crankpin rotatable relative to the compression cylinder and / or the regeneration cylinder, around a third axis substantially coplanar with the first axis and substantially perpendicular to the first and second axes; and a compression linkage, comprising a connecting rod head mounted on the crankpin and a small end articulated on the compression piston. Such a cooler is described in particular in US4365982. In known manner, the Stirling cycle comprises the following four phases: an isothermal compression of a fluid at a hot temperature, obtained by the displacement of a compression piston in a compression cylinder; an isochoric cooling of the fluid, from the hot temperature to a cold temperature, obtained by passing the fluid through a regeneration piston, said piston being moving in a regeneration cylinder and acting as a heat exchanger; an isothermal expansion of the fluid at the cold temperature, obtained by returning the compression piston to the compression cylinder, and an isochoric heating of the fluid, from the cold temperature to the hot temperature, obtained by returning the regeneration piston to the regeneration cylinder. Conventionally, the regeneration piston is driven by the crankshaft, via a link articulated on the one hand on the compression rod and on the other hand on the regeneration piston. This device requires to be installed with very small games in the joints of the rod, in particular to reduce shocks at each reversal of direction of movement of the piston. Constraints and realization costs are therefore high for parts. The present invention aims to provide a device ensuring the mechanical drive of the regeneration cylinder, reducing the constraints and associated costs. For this purpose, the subject of the invention is a cooler of the aforementioned type, in which the regeneration piston is connected to the crankshaft by a connecting element comprising at least three adjacent rigid sections connected by at least two spring-type links. , a first end of said connecting element being fixedly mounted on the regeneration piston, a second end of said connecting element being fixedly mounted on the head of the compression rod.
    [0002] By "spring-type connection" is meant a flexible and play-free connection. As will be detailed in the description below, other connections than springs have these characteristics. According to other advantageous aspects of the invention, the cooler comprises one or more of the following characteristics, taken individually or in any possible technical combination: the first and second ends of the connecting element are arranged on the and other of a plane formed by the first axis of the compression piston and the third axis of the crankshaft; the second axis of the regeneration piston is situated at a non-zero distance from the third axis of the crankshaft; the third axis is disposed between the second axis and the compression cylinder; the at least three sections are substantially rectilinear; the at least two sections of the connecting element closest to the regeneration piston are arranged substantially parallel to the second axis, and at least the section closest to the connecting rod head is disposed substantially parallel to the first axis; the links are formed by helical torsion springs; - The coil springs are arranged along axes parallel to each other; The helicoidal springs are arranged along axes perpendicular to each other. The invention will be better understood on reading the description which follows, given solely by way of nonlimiting example and with reference to the drawings, in which: FIG. 1 is a sectional view of a cooler according to a embodiment of the invention; FIG. 2 is a view of an element of the cooler of FIG. 1; and - Figures 3 to 6 are views of alternative embodiments of the element of Figure 2.
    [0003] Figure 1 shows a sectional view of a device 10 according to a first embodiment of the invention. The device 10 is a cooler operating according to the Stirling Cycle 3033630. The device 10 comprises a housing 12. Said housing 12 comprises in particular a body 14 and a cryostat well 16, assembled to one another and defining a volume 18 internal to the housing. The internal volume 18 is preferably filled with a high purity gas such as helium.
    [0004] In the remainder of the description, an orthonormal basis (X, Y, Z) is considered. The body 14 of the housing defines in particular a first internal wall 20 of cylindrical shape, disposed along a first axis 22 parallel to Z. Said internal wall 20 is said compression cylinder. The housing 12 further comprises a flange 24 assembled to the body 14. The flange 24 closes an orifice located at a first axial end of the compression cylinder 20. The cryostat well 16 defines a second internal wall 26, of cylindrical shape, arranged along a second axis 28 inclined relative to the first axis 22. In the example of Figure 1, the second axis 28 is parallel to X, perpendicular to the first axis 22. The second axis 28 is substantially coplanar with the first axis 22.
    [0005] The second inner wall 26 is called the regeneration cylinder. A first axial end 30 of the regeneration cylinder 26, called the cold end, is closed. In a conventional manner, the cold end 30 is in contact with an element 31 to be cooled by means of the device 10, for example an electronic component. The second axial ends of the compression cylinder 20 and the regeneration cylinder 26 communicate with a central space 32 of the housing 12. The central space 32 is substantially cylindrical, arranged parallel to Y. The central space 32 houses a crankshaft system 36, connected to a motor (not shown). The crankshaft 36 has a motor shaft disposed along a third axis 34, parallel to Y. The third axis 34 is substantially coplanar with the first axis 22. Preferably, as shown in Figure 1, the third axis 34 is disposed between the second axis 34 28 and the compression cylinder 20 at a non-zero distance 38 of the second axis 28. On the crankshaft drive shaft 36 is fixedly mounted an eccentric pin 40. The crank pin 40 is coupled to a rod 42 substantially disposed in the plane (X, Z) 30 containing the first and second pins 22, 28. The rod 42 is a rigid piece, comprising a head 44 mounted on the crankpin 40 via a bearing 46. The rod 42 further comprises a foot 48 hinged to a first piston 50, said compression piston. The compression piston 50 is movable in translation along the first axis 22 in the compression cylinder 20, which guides the piston 50 during its displacement.
    [0006] The compression piston 50 defines a compression chamber 52 situated in the compression cylinder 20 between the flange 24 and said compression piston 50. The compression chamber 52 has a variable volume as a function of the displacement of the piston 50.
    [0007] Through a connecting element 54, which will be described hereinafter, the eccentric pin 40 is also connected to a second piston 56, called the regeneration piston. The regeneration piston 56 is movable in translation along the second axis 28 in the regeneration cylinder 26, which guides the piston 56 during its displacement. The regeneration piston 56 includes a base 58, as well as a tube 60 which extends from the base 58 into the regeneration cylinder 26, towards the cold end 30. Typically, the inside of the tube 60 is lined with a porous material (not shown) capable of heat exchange with a fluid contained in the regeneration cylinder 26. The porous material is for example formed of a stack of metal grids.
    [0008] The regeneration piston 56 defines a regeneration chamber 62 situated in the regeneration cylinder 26 between the cold end 30 and said regeneration piston 56. The regeneration chamber 62 has a variable volume as a function of the displacement of the piston 56. A pneumatic connection between the compression chamber 52 and the regeneration chamber 62 is provided, for example, by a duct of which a first portion 64 passes through the casing 12 and a second portion 66 passes through the base 58 of the regeneration piston 56. FIG. 2 shows a detail view of the connecting element 54 which connects the crank pin to the second piston 56.
    [0009] The connecting element 54 comprises three adjacent sections 70, 72, 74, said sections being rigid and substantially rectilinear. A first end 75 of a first section 70 is fixedly mounted on the base 58 of the regeneration piston 56. The first section 70 is substantially aligned with the axis 28 of movement of the piston 56, parallel to X.
    [0010] A second end of the first section 70 corresponds to a first spring-type link 76, which connects the first section 70 to a second segment 72. Like the first section 70, the second section 72 is substantially parallel to X. One end of the second segment 70 section 72, opposite the first link 76, corresponds to a second link 78 of the spring type. The second link 78 connects the second section 72 to a third section 74. The third section 74 is substantially parallel to Z, ie perpendicular to the second section 72.
    [0011] One end 80 of the third section 74, opposite to the second link 78, is fixedly mounted on the head 44 of the connecting rod 42. As can be seen in FIG. 1, the ends 75 and 80 of the connecting element 54 are arranged on either side of a plane formed by the first axis 22 of the compression piston and the third axis 34 of the crankshaft. In other words, the connecting element 54 is attached to the connecting rod 42 substantially opposite to a usual zone for fixing the connecting rod of the regeneration piston in the devices of the prior art. In the example of Figures 1 and 2, the connecting member 54 is formed of a metal rod wound on itself at the links 76, 78, so as to form torsion springs at said links. Each of said springs 76, 78 is helical, disposed along an axis parallel to Y. FIG. 3 shows an alternative 154 of the element 54 of FIGS. 1 and 2. The element 154 is similar to the element 54 described above. with the exception of the first link 176 which forms a helical spring disposed along an axis parallel to Z. The second link 78 is disposed parallel to Y, as in the element 54 of FIG. 2. FIGS. and 6 show variants 254, 354 and 454 to the connecting elements 54 and 154 of Figures 1, 2 and 3. As in the previous examples, the elements 254, 354 and 454 comprise three adjacent sections 70, 72, 74 rigid and substantially rectilinear. The first two sections 70, 72 are substantially parallel to X and the third section 74 is substantially parallel to Z. The adjacent sections 70, 72 and 72, 74 are respectively connected by spring type links. In example 254 of FIG. 4, the links 276, 278 are magnetic bearings of pivot and / or ball type. In example 354 of FIG. 5, the links 376, 378 are pivotal flexes. In Example 454 of Figure 6, the links 476, 478 are flexible bearings. The elements 154, 254, 354 and 454 described above are able to replace the connecting element 54 in the device 10 of FIG. 1 for similar operation. A method of operation of the device 10 will now be described, according to the steps known per se of a Stirling cycle. The eccentric crank pin 40 is rotated by the crankshaft drive shaft 36 around the axis 34. By means of the connecting rod 42, the rotation of the crank pin 40 is converted into reciprocating rectilinear motion of the compression piston 50. according to the first axis 22.
    [0012] Furthermore, via the connecting element 54, the rotation of the crankpin 40 is converted into reciprocating rectilinear motion of the regeneration piston 56, along the second axis 28. The spring links 76, 78 enable the connecting member 54 to flexibly convert the movement of the connecting rod head 44 into straight motion of the piston 56, guided by the regeneration cylinder 26. The spring links 76, 78 eliminate the problems associated with a conventional drive system. connecting rod, in particular the shocks generated by the mechanical games. The movements of the pistons 50, 56 are of quasi-sinusoidal type. The movements of the pistons 50, 56 are out of phase with each other by about 90 °, that is to say that one of the two pistons 50, 56 is halfway when the other of said two pistons is at one end of its course. For example, it is considered that the compression piston 50 moves along the first axis 22 towards the flange 24. In the configuration shown in FIG. 1, the compression chamber 52 has almost reached its minimum volume. The helium contained in said chamber reaches a maximum pressure range and is driven into the regeneration piston 56 via the conduit 64, 66. Said regeneration piston is then substantially halfway through the regeneration cylinder 26 and moves in opposite direction to the cold end 30.
    [0013] The helium passes through the tube 60 of the piston 56 and cools in contact with the heat exchanger contained in said tube. The regeneration piston 56 continues its course in the regeneration cylinder 26 until a maximum expansion of the regeneration chamber 62. Furthermore, the compression piston 50 moves in the compression cylinder 20 so as to increase the volume of the the compression chamber 52, decreasing the pressure of the helium. The return of the regeneration piston 56, combined with the continued expansion of the volume of the compression chamber 52, causes the helium to pass through the tube 60 in opposite directions. The helium then recovers heat and warms up again. , before returning to the compression chamber 52 via the conduit 64, 66. The compression piston 50 continues its stroke until a maximum expansion of the compression chamber 52, then starts in the opposite direction to compress at again the fluid and complete the cycle. The distance 38 between the second axis 28 and the third axis 34 allows the movement of the piston 56 in the regeneration cylinder 26 through the element 54, without the crankshaft 36 generates a footprint. It is thus possible to increase the compactness of the cryostat well 16 along the second axis 28.
    [0014] Preferably, a mounting method of the device 10 is such that, without operation of the motor driving the crank pin 40, the spring links 76, 78 are substantially effortlessly installed. Thus, during operation, the forces in the links 76, 78 are only induced by the displacement of the elements of the device 10.
    [0015] According to an alternative embodiment not shown, the pneumatic connection between the compression chamber 52 and the regeneration chamber 62 is provided by a duct comprising a deformable pipe disposed in the central space 32. For example, the ends of the pipe are The hose is flexible or formed of rigid sections connected by flexible zones, so as to deform according to the movements of the pistons 50 and 56.
    权利要求:
    Claims (9)
    [0001]
    CLAIMS 1. A chiller (10) operating according to the Stirling cycle, comprising: - a compressor with a compression piston (50) movable in a compression cylinder (20), along a first axis (22); - a regenerator with a regeneration piston (56) movable in a regeneration cylinder (26), according to a second axis (28) forming an angle with the first axis; - a crankshaft (36) for driving, comprising a pin (40) rotatable relative to the compression cylinder and / or the regeneration cylinder, about a third axis (34) substantially coplanar with the first axis and substantially perpendicular to the first axis; and the second axis; and - a compression rod (42), comprising a crankshaft (44) mounted on the crankpin and a crankpin (48) hinged to the compression piston; characterized in that the regeneration piston is connected to the crankshaft by a connecting element (54) comprising at least three adjacent rigid sections (70, 72, 74) connected by at least two spring-type links (76, 78), a first end (75) of said connecting member being fixedly mounted on the regeneration piston, a second end (80) of said connecting member being fixedly mounted on the head of the compression rod.
    [0002]
    2. Cooler according to claim 1, wherein the first (75) and second (80) ends of the connecting element (54) are disposed on either side of a plane formed by the first axis (22). ) of the compression piston and the third axis (34) of the crankshaft.
    [0003]
    3. Cooler according to claim 1 or claim 2, wherein the second axis (28) of the regeneration piston is located at a distance (38) non-zero of the third axis (34) of the crankshaft.
    [0004]
    4. Cooler according to claim 3, wherein the third axis (34) is disposed between the second axis (28) and the compression cylinder (20).
    [0005]
    5. Cooler according to one of the preceding claims, wherein the at least three sections (70, 72, 74) are substantially rectilinear.
    [0006]
    6. Cooler according to claim 5, wherein: the at least two sections (70, 72) of the connecting element (54), the closest to the regeneration piston (56) are arranged substantially parallel to the second axis (28), and - at least the section (74) closest to the big end (44) is disposed substantially parallel to the first axis (22).
    [0007]
    7. Cooler according to one of the preceding claims, wherein the links (76, 78) are formed by helical torsion springs. 10
    [0008]
    8. Cooler according to claim 7, wherein the coil springs are arranged along axes parallel to each other.
    [0009]
    9. Cooler according to claim 7, wherein the coil springs are arranged along axes perpendicular to each other. 15
    类似技术:
    公开号 | 公开日 | 专利标题
    EP3268680B1|2019-01-09|Stirling cooler with flexible regenerator drive
    AU2004200585B2|2008-01-10|Folded guide link stirling engine
    EP1859135B1|2009-04-22|Very compact device for adjusting the compression ratio of an internal combustion engine
    EP2031234B1|2010-10-13|Generation of electricity in a turbomachine by means of a stirling engine
    EP0462874B1|1993-09-01|Aircraft shock absorber
    EP2281107B1|2012-07-11|Engine with a variable volume chamber
    EP2434135A1|2012-03-28|Rotary expansion engine
    WO2014202885A1|2014-12-24|Device for thermal compression of a gaseous fluid
    JPH06235350A|1994-08-23|Sterling cycle system driving device
    CN108138694A|2018-06-08|Double-acting expansion cylinder with adaptive support element
    EP3268679B1|2019-02-20|Stirling cooler with fluid transfer by deformable conduit
    EP0778452A1|1997-06-11|Stirling cooler with rotary drive
    US5092131A|1992-03-03|Gas expansion engine
    FR2532011A1|1984-02-24|Spiral compressor with orbiting spiral wall disc
    EP2808528A1|2014-12-03|Fluid expansion motor
    FR3101121A1|2021-03-26|Variable length connecting rod for a variable compression ratio combustion engine
    KR0128487Y1|1998-12-01|Compressor piston of double joint structure
    RU2008507C1|1994-02-28|Fuel injection pump
    BE476912A|
    FR2633681A1|1990-01-05|Hydraulic spring device
    FR2821646A1|2002-09-06|PISTON OF MOTOR OR OTHER MACHINES
    FR2586454A1|1987-02-27|FREE PISTON MACHINE FOLLOWING THE STIRLING PROCESS
    CH691235A5|2001-05-31|Piston machine such as engine or compressor has cylinders and cylinder head forming a single fixed block
    BE347932A|
    BE407637A|
    同族专利:
    公开号 | 公开日
    EP3268680A1|2018-01-17|
    SI3268680T1|2019-05-31|
    WO2016146580A1|2016-09-22|
    TR201904575T4|2019-04-22|
    KR20170126917A|2017-11-20|
    CN107407508B|2019-11-05|
    CN107407508A|2017-11-28|
    US20180058730A1|2018-03-01|
    FR3033630B1|2017-04-07|
    US10544964B2|2020-01-28|
    IL254449D0|2017-11-30|
    EP3268680B1|2019-01-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4365982A|1981-12-30|1982-12-28|The United States Of America As Represented By The Secretary Of The Army|Cryogenic refrigerator|
    SU1186903A2|1983-07-18|1985-10-23|Омский политехнический институт|Gas cryogen machine|
    SU1508057A1|1987-03-04|1989-09-15|Предприятие П/Я М-5727|Cryogenic gas machine|WO2019002570A1|2017-06-30|2019-01-03|Safran Electronics & Defense|Cooling device intended to equip an infrared vision device with a deformable element|
    FR3068444A1|2017-06-30|2019-01-04|Safran Electronics & Defense|COOLING DEVICE FOR ONBOARDING INFRARED VISION DEVICE WITH DOUBLE DEFORMABLE ELEMENT|US1531709A|1922-03-30|1925-03-31|Automatic Refrigerating Compan|Air-refrigerating machine|
    US4520629A|1983-08-26|1985-06-04|Texas Instruments Incorporated|Drive mechanism for a refrigerator with clearance seals|
    CN2700781Y|2004-04-19|2005-05-18|中国科学院理化技术研究所|Stirling refrigerating machine with a straight sliding rail bearing support|
    EP2158161B1|2007-06-07|2020-04-01|DEKA Products Limited Partnership|Fluid vapor distillation apparatus|
    CN201992902U|2010-11-10|2011-09-28|中国电子科技集团公司第十四研究所|Sterling refrigerator supported by oil-free lubrication liner bearing|
    CN102654325A|2012-05-14|2012-09-05|中国电子科技集团公司第十四研究所|Ball spline supporting Stirling refrigerator|US10753653B2|2018-04-06|2020-08-25|SumitomoCryogenic Of America, Inc.|Heat station for cooling a circulating cryogen|
    法律状态:
    2016-03-31| PLFP| Fee payment|Year of fee payment: 2 |
    2016-09-16| PLSC| Search report ready|Effective date: 20160916 |
    2017-03-31| PLFP| Fee payment|Year of fee payment: 3 |
    2018-03-30| PLFP| Fee payment|Year of fee payment: 4 |
    2019-03-29| PLFP| Fee payment|Year of fee payment: 5 |
    2020-12-18| ST| Notification of lapse|Effective date: 20201110 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1500487A|FR3033630B1|2015-03-13|2015-03-13|STIRLING COOLER WITH FLEXIBLE REGENERATOR DRIVE|FR1500487A| FR3033630B1|2015-03-13|2015-03-13|STIRLING COOLER WITH FLEXIBLE REGENERATOR DRIVE|
    US15/555,979| US10544964B2|2015-03-13|2016-03-14|Stirling cooler with flexible regenerator drive|
    TR2019/04575T| TR201904575T4|2015-03-13|2016-03-14|Flexible regenerator driven Stirling cooler.|
    SI201630234T| SI3268680T1|2015-03-13|2016-03-14|Stirling cooler with flexible regenerator drive|
    EP16712754.7A| EP3268680B1|2015-03-13|2016-03-14|Stirling cooler with flexible regenerator drive|
    KR1020177025553A| KR20170126917A|2015-03-13|2016-03-14|A Stirling cooler with a flexible regenerator drive|
    PCT/EP2016/055448| WO2016146580A1|2015-03-13|2016-03-14|Stirling cooler with flexible regenerator drive|
    CN201680015211.XA| CN107407508B|2015-03-13|2016-03-14|Stirling cryocooler with regenerator flexible driving|
    IL254449A| IL254449D0|2015-03-13|2017-09-12|Stirling cooler with flexible regenerator drive|
    [返回顶部]