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1. 发明专利

JP2003279184A Pulse tube refrigerator 审中-公开
标题翻译：脉冲制冷机
公开(公告)号：JP2003279184A
公开(公告)日：2003-10-02
申请号：JP2002082347
申请日：2002-03-25
申请人： Fuji Electric Co Ltd , 富士電機株式会社
发明人： KAMOSHITA TOMOYOSHI , YASUKAWA YUKIO
IPC分类号： F25B9/00
CPC分类号： F25B9/145 , F25B2309/1407 , F25B2309/1413 , F25B2309/1414 , F25B2309/1415 , F25B2309/1423
摘要： PROBLEM TO BE SOLVED: To provide a pulse tube refrigerator capable of providing stable refrigerating output even if installation attitude is changed.
SOLUTION: In the pulse tube refrigerator connecting a connection pipe 11a connected to a compressor not indicated here, a heating part 12, a heat accumulating part 13, a cooling part 14, a pulse tube 15, and a heat radiation part 16 in order to integrate the same, and connecting an inertance tube 17 and a buffer tank 18 to the pulse tube 15 via the heat radiation part 16, ratio of an inner section area of the pulse tube 15 and an inner section area of the heat accumulating part 13 is kept at least 0.1 and at most 0.35.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供即使安装姿态改变也能够提供稳定的制冷输出的脉冲管制冷器。解决方案：在连接在这里未示出的压缩机的连接管11a的脉冲管制冷器中，加热部12，蓄热部13，冷却部14，脉冲管15以及散热部16 为了将其积分，并且经由散热部16将惯性管17和缓冲罐18连接到脉冲管15，脉冲管15的内部区域的面积和蓄热的内部区域的比率部分13保持在0.1以上0.35以下。版权所有（C）2004，JPO

2. 发明专利

JP2002206479A COMPRESSOR 审中-公开
公开(公告)号：JP2002206479A
公开(公告)日：2002-07-26
申请号：JP2001254116
申请日：2001-08-24
申请人： FUJI ELECTRIC CO LTD
发明人： TOYAMA KENTARO , YASUKAWA YUKIO , OSHIMA KEIJI
IPC分类号： F04B35/04
摘要： PROBLEM TO BE SOLVED: To simplify the structure of a vibration compressor for making it compact and improvement of the accuracy of assembling. SOLUTION: A yoke for transmitting magnetic flux of a permanent magnet 13 forming a linear drive unit 9 with a vibrator coil 11, and a cylinder and a pressure container body 26 are integrally formed with each other as a body block 28. A piston 3, which is to be inserted into the cylinder 1, is supported in a cantilever manner by two pairs of support springs 7 and 8 at an end opposite to an operating gas compression space 5, and the linear drive part 9 is arranged in parallel, in the radial direction of the piston. As compared to the structure of the linear drive part 9 being arranged in series in the axial direction of the piston, the longitudinal dimension of the piston part is reduced, and since a plurality of parts are arranged collectively in the body block 28, the number of parts items is reduced to improve the assembling accuracy.

3. 发明专利

JPH08321416A CURRENT LEAD FOR SUPERCONDUCTING DEVICE 失效
公开(公告)号：JPH08321416A
公开(公告)日：1996-12-03
申请号：JP7112095
申请日：1995-03-29
申请人： FUJI ELECTRIC CO LTD
发明人： BONO TAKAAKI , KONNO MASAYUKI , SAKAKI KIYOSHI , TAKITA KIYOSHI , YASUKAWA YUKIO , ITO IKUO
IPC分类号： H01L39/04 , H01B12/02 , H01F6/00
摘要： PURPOSE: To prevent burning of a high temperature oxide superconductor due to abnormal temperature rise in current application by providing a protective conductor electrically connected to a low temperature side lead in parallel. CONSTITUTION: A protective conductor 15 formed of metal material such as stainless steel, etc., is provided by electrically connecting to a low temperature side lead 12 in parallel. The protective conductor 15 is formed into a cylinder, and helium gas of low temperature is introduced into the inside of the protective conductor 15 through a communication channel provided to a low temperature terminal 32, and then made to flow to the high temperature side lead 13 through a communication channel provided to an intermediate connection part 14, so that a high temperature oxide superconductor constituting the low temperature side lead 12 and the protective conductor 15 are effectively cooled. Further, the protective conductor 15 consists of a series-connection-body wherein good- conduction metal made of copper, or copper alloy is provided on its both end parts, acting as electrical connection parts, and low-temperature-conduction metal made of stainless steel is assigned on the central part, for joint.

4. 发明专利

JPH0528883A STRUCTURE OF HIGH SPEED SUPERCONDUCTIVE SWITCH 失效
公开(公告)号：JPH0528883A
公开(公告)日：1993-02-05
申请号：JP17997491
申请日：1991-07-19
申请人： JAPAN ATOMIC ENERGY RES INST , FUJI ELECTRIC CO LTD
发明人： TSUNEOKA MASAKI , YOSHIDA KIYOSHI , HIGAMI HISAAKI , YASUKAWA YUKIO , KUMAGAI TAKEO
IPC分类号： H01H33/59
摘要： PURPOSE:To accomplish a permanent current switch at high speed and with low heat emission, suppress heat intrusion of refrigerant He and evaporation associate therewith, and control the operation time easily with the peak value of the input power. CONSTITUTION:A thermal type permanent current switch 3 is composed of a superconductive wire 3a and a heater wire 3b. When the current in the superconductive wire 3a is to be shut off, first a large power is applied to the heater wire 3b to quickly transfer a superconductive coil 1 from the superconductive state into normal conductive state, and then the power to the heater wire 3b is reduced so as to apply the min. power for keeping the normal conductive state.

5. 发明专利

JPH04241403A MANUFACTURE OF SUPERCONDUCTIVE COIL 失效
公开(公告)号：JPH04241403A
公开(公告)日：1992-08-28
申请号：JP291891
申请日：1991-01-16
申请人： FUJI ELECTRIC CO LTD
发明人： YASUKAWA YUKIO , KUMAGAI TAKEO , KONNO MASAYUKI
IPC分类号： H01F6/06 , H05H7/04
摘要： PURPOSE:To obtain a superconductive coil excellent in training property by improving the resin impregnation method into the coil lined up and wound in lace truck shape and the heating hardening method. CONSTITUTION:It is lined up and wound in lace truck shape while applying thermosetting resin on a superconductive wire, and also the heating hardening treatment of thermosetting resin is performed while adding external compressing load in the direction of compressing the sectional area of a coil, using a pressing jig. Moreover, external compressing load is added from the two directions between the turns of the coil and between the layers. Furthermore, for a superconductive lead wire, a square wire, where vertical and horizontal dimensions are equal, is used.

6. 发明专利

JP2003166766A HEAT EXCHANGER FOR PULSE PIPE REFRIGERATOR 审中-公开
公开(公告)号：JP2003166766A
公开(公告)日：2003-06-13
申请号：JP2001364730
申请日：2001-11-29
申请人： FUJI ELECTRIC CO LTD
发明人： ITOYAMA TAKEHIDE , YASUKAWA YUKIO , TSUKAHARA YUJI
IPC分类号： F25B9/00
摘要： PROBLEM TO BE SOLVED: To improve heat exchange performance by suppressing channelling of working gas flowing through a heat exchanger and suppression of the increase of a pressure loss and reduce the occurrence of a thermal loss, in a heat exchanger provided with a pulse pipe refrigerator. SOLUTION: In a pulse pipe refrigerator comprising a compressor, a cool storage apparatus, a pulse pipe, a phase control part, the two ends of the cool storage apparatus, and heat exchangers on the high temperature side and the low temperature side located between the pulse pipe and the phase control part, and each of the heat exchangers where its housing is charged with a heat exchange member consisting of a metal mesh heat-exchanging with working gas, in the first heat exchanger 5 on the high temperature side located between a connection pipe 1a of the compressor and the high temperature end of the cool storage apparatus 2, a straightening member 5c consisting of a metal mesh 5c-1 or a metal sintered body 5c-2 and having voids selected to a value lower than that of a heat exchange member is located between the opening end of the connection pipe 1 and the heat exchange member in a state that the straightening member and the heat exchange member with which the housing 5a is charged are overlapped with each other, such that working gas evenly flows to the heat exchange material, and the area of its effective heat transfer is increased to improve heat exchange performance. COPYRIGHT: (C)2003,JPO

7. 发明专利

JP2003139426A PULSE TUBE TYPE REFRIGERATOR 审中-公开
公开(公告)号：JP2003139426A
公开(公告)日：2003-05-14
申请号：JP2001339174
申请日：2001-11-05
申请人： FUJI ELECTRIC CO LTD
发明人： KAMOSHITA TOMOYOSHI , YASUKAWA YUKIO
IPC分类号： F25B9/00
摘要： PROBLEM TO BE SOLVED: To provide a pulse tube type refrigerator using a Stirling cycle that can ensure refrigeration efficiency higher than a conventional level. SOLUTION: The pulse tube type refrigerator 10 comprises a compressor for repeatedly feeding and suctioning working gas, a cold storage unit 13 connected to the compressor via a radiation part 12 and internally filled with a cold storage medium, a pulse tube 15 connected to the cold storage unit via a cooling part 14, and a buffer tank 18 connected to the pulse tube via a radiation part 16 and an inertance tube 17. A ratio of the space volume of the pulse tube 15 to the space volume of the cold storage unit 13 is set at 0.75 to 1.5. In another mode, with the diameter of a circle of an area equal to an inside sectional area of the cold storage unit 13 taken as an inside diameter, a value of the division of the length of the cold storage unit 13 by the square of the inside diameter is set at 0.11 to 0.26.

8. 发明专利

JPH08107010A CURRENT LEAD FOR SUPERCONDUCTIVE DEVICE 失效
公开(公告)号：JPH08107010A
公开(公告)日：1996-04-23
申请号：JP23979594
申请日：1994-10-04
申请人： FUJI ELECTRIC CO LTD
发明人： TAKITA KIYOSHI , YASUKAWA YUKIO
IPC分类号： G01R15/20 , H01F6/00 , H01L39/04
摘要： PURPOSE: To detect generation of transition surely at an early stage and to enable safe operation without burning by providing a detection means of current flowing in an oxide superconductor to at least one of a connection piece of a low temperature side lead and a tubular container. CONSTITUTION: Magnetic field measuring elements 20A, 20B are provided to a connection piece 11A connected to an upper end of a plurality of oxide superconductive conductors 8 built in a low temperature side lead 5 through a silver foil 12A. The magnetic field measuring elements 20A, 20B detect current flowing in the oxide superconductive conductor 8. Furthermore, magnetic field measuring elements 20C, 20D are provided to a connection piece 11B connected by solder to a lower end of the oxide superconductive conductor 8 through a silver foil 12B. The magnetic field measuring elements 20A to 20D are connected to a magnetic field detection circuit installed outside a vacuum heat insulation container by a measuring lead, receive signal from the magnetic field measuring elements 20A to 20D and carry out comparison operation with a reference value. Thereby, generation of transition can be surely detected at an early stage.

9. 发明专利

JPH05145126A CURRENT LEAD FOR SUPERCONDUCTIVE DEVICE 失效
公开(公告)号：JPH05145126A
公开(公告)日：1993-06-11
申请号：JP30091391
申请日：1991-11-18
申请人： FUJI ELECTRIC CO LTD
发明人： TAKITA KIYOSHI , YASUKAWA YUKIO , NOSE SHINICHI
IPC分类号： H01L39/04 , H01F6/00 , H01F6/06
摘要： PURPOSE:To eliminate the influence of magnetic field of a current lead on a low-temperature side lead by connecting the terminals on low-temperature side of a pair of reciprocating conductors, supporting oxide superconductors so that they oppose to the opposite sides of an electric insulator, with a pair of terminals of a superconductive coil. CONSTITUTION:A pair of oxide superconductors 18A and 18B of a reciprocating conductor 18 are insulated and supported by an electric insulator 17 while facing each other so that they can resist against the voltage between one terminal and another terminal of a superconductive coil 1. Exciting currents flow through the superconductive coil in reverse direction. The circulating direction of fields generated by the currents flowing in reverse directions also flow in reverse directions and offset. In this way, it is made possible to bring total self-magnetic field to substantially zero. Therefore, influences of the self-magnetic field on critical current density of the oxide superconductor can be eliminated. As a result, it is possible to increase current lead without increasing the cross section of the oxide superconductor.

10. 发明专利

JPH03179710A MANUFACTURE OF SUPERCONDUCTING COIL 失效
公开(公告)号：JPH03179710A
公开(公告)日：1991-08-05
申请号：JP5448490
申请日：1990-03-06
申请人： FUJI ELECTRIC CO LTD
发明人： YASUKAWA YUKIO
IPC分类号： H01F6/06
摘要： PURPOSE:To obtain a superconducting coil having no bubbles and the like and in which wire movement hardly happens by a method wherein resin is adhered to the superconducting wire led out from a conductor bobbin, it is heated up and wound around a coil bobbin, and the resin is hardened after the winding has been completed. CONSTITUTION:A superconducting wire 2, which is led out from a conductor spool 5, passes through a resin vessel 3, epoxy resin 31 is adhered to the surface of the conducting wire 2, heated up to 100 to 200 deg.C when passing through a heater 4, and the wire 2 is wound around a bobbin 1 maintaining high temperature. The viscosity of the adhered resin is reduced, the resin is infiltrated into the covering of the wire 2, the wettability of the resin to the wire 2 when it is wound and the wettability of the coil bobbin 1 to the conducting wire 2 are improved, and no bubbles remain after oxidization. Also, when the heated up conducting wire 2 returns to the normal temperature, as the wire is wound several turns, tensile force is added in addition to the tensile force of the conducting wire 2 applied when winding. After the winding operation has been completed, the coil 21, which is integrally formed with the coil bobbin 1, is placed in a heating furnace, and the resin is hardened.

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