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51. 发明专利

JPS57131967A REFRIGERANT STATE OBSERVING APPARATUS 失效
公开(公告)号：JPS57131967A
公开(公告)日：1982-08-16
申请号：JP1734681
申请日：1981-02-06
申请人： HITACHI LTD
发明人： UEDA TOSHIAKI , SAYOU KOUSAKU
IPC分类号： F25B49/02 , F25B41/00

52. 发明专利

JP2004007874A ROTARY ELECTRIC MACHINE 有权
公开(公告)号：JP2004007874A
公开(公告)日：2004-01-08
申请号：JP2002158507
申请日：2002-05-31
申请人： HITACHI LTD
发明人： UEDA TOSHIAKI , SAKAI TAKESHI , TERUMOTO SUSUMU , WATANABE TOSHINORI
IPC分类号： H02K3/50 , H02K5/08 , H02K9/19 , H02K9/22
摘要： PROBLEM TO BE SOLVED: To provide a reliable rotary electric machine by improving heat dissipation efficiency of the stator coil without increasing the number of components. SOLUTION: In the stator of the rotary electric machine filled with thermally conductive insulating resin at the stator coil end part, materials are selected to satisfy the relation α1 COPYRIGHT: (C)2004,JPO

53. 发明专利

JP2002291211A ROTATING ELECTRIC MACHINE 失效
公开(公告)号：JP2002291211A
公开(公告)日：2002-10-04
申请号：JP2001093066
申请日：2001-03-28
申请人： HITACHI LTD
发明人： YASUHARA TAKASHI , OKAMURA HISANOBU , ISHIKAWA NORITOSHI , UEDA TOSHIAKI
IPC分类号： H02K17/16
摘要： PROBLEM TO BE SOLVED: To provide a rotating electric machine having a good rotor and no void in casting. SOLUTION: Aluminum is used for conductor bars 7a and end rings 7c, wherein the end parts of the conductor bars 7a are tapered toward the tips. The end rings 7c are jointed electrically and mechanically to both ends of the conductor bars 7a by a friction bonding.

54. 发明专利

JP2002262497A ROTARY ELECTRIC MACHINE AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JP2002262497A
公开(公告)日：2002-09-13
申请号：JP2001053422
申请日：2001-02-28
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： YASUHARA TAKASHI , UEDA TOSHIAKI , KIMURA YASUHIKO , OBARA SANSHIRO , SHIBUKAWA SUETARO
IPC分类号： H02K3/04 , H02K3/12 , H02K3/48 , H02K3/50 , H02K15/04 , H02K15/085
摘要： PROBLEM TO BE SOLVED: To miniaturize a rotary electric machine by shortening the end of a stator winding. SOLUTION: Each of unit windings 41 is formed to be divided into a first winding part 42 having an opened end 44 and a second winding part 43, the opened end 44 of the first winding part 42 is folded in the direction of winding mounting so that the open ends 443, 444 of the opened end 44 of the first winding part 42 molded so that the level difference of the radial direction of a stator iron core can be made between opposite side parts 46, 47 are opposed to each other, and the open ends 443, 444 of the opened end 44 of the first winding part 42 are connected by winding conductor pieces 431, 432 constituting the second winding part 43 to constitute the unit winding 41.

55. 发明专利

JP2001118741A IGNITION COIL AND ITS WINDING METHOD 失效
公开(公告)号：JP2001118741A
公开(公告)日：2001-04-27
申请号：JP29760399
申请日：1999-10-20
申请人： HITACHI LTD
发明人： TAKAHASHI ISAO , DAIROKU NORIYUKI , KOBAYASHI KAZUTOSHI , UEDA TOSHIAKI , NAKABAYASHI KENJI
IPC分类号： H01F41/06 , F02P15/00 , H01F38/12
摘要： PROBLEM TO BE SOLVED: To provide a high voltage coil improving breakdown voltage, regarding an electromagnetic coil and an ignition coil for an internal combustion engine. SOLUTION: In a winding around a bobbin 100 of a secondary coil, it is started to wind from a high voltage side collar 101 and continued to wind toward the other end of low voltage side with a specified number of turns, thereby forming a forward winding. In a return winding in which a specified number of turns is reduced, the coil is wound back in the direction opposite to the forward winding. In the forward winding and the return winding, the number of turns is increased in sequence by a specified number. An inclined surface having an angle θ1 is formed in the high voltage side, and an inclined surface having an angle θ is formed in the direction of winding progress. As a result, the number of turns in the vicinity of the high voltage side collar 101 is reduced, a line voltage can be lowered, and a winding part where winding disorder is little can be arranged on the high voltage side, so that insulating property is improved. Winding diameters in the vicinities of the high voltage side collar 101 and a low voltage side collar 102 are reduced, winding layers on both sides are lowered so that imperfect breakdown voltage due to layer collapse which turns to a problem on the boundary to the collar is excluded, and a coil excellent in breakdown voltage can be obtained.

56. 发明专利

JPH0678045B2 失效
公开(公告)号：JPH0678045B2
公开(公告)日：1994-10-05
申请号：JP14476985
申请日：1985-07-03
申请人： HITACHI LTD
发明人： UEDA TOSHIAKI
IPC分类号： B60H1/00 , G05D23/20

57. 发明专利

JPH06260308A NEUTRAL-POINT GROUND APPARATUS 失效
公开(公告)号：JPH06260308A
公开(公告)日：1994-09-16
申请号：JP4342593
申请日：1993-03-04
申请人： HITACHI LTD , CHUBU ELECTRIC POWER
发明人： ARITA HIROSHI , KIDA JUNZO , KUROSAWA YUKIO , YAMAGIWA TOKIO , MORITA MASAO , UEDA TOSHIAKI
IPC分类号： H01C13/00 , H02H3/34 , H02H9/08
摘要： PURPOSE:To provide a neutral-point grounding apparatus, wherein the detecting sensitivity of a grounding relay is improved in the line-to-ground fault of a transmission system. CONSTITUTION:Low-value resistors 401, 401, 403,..., 419 and 420 are connected between a neutral point N in a transmission system and the ground in series. The group of switches 501-520, which are connected to the respective resistors in parallel and can be turned ON/OFF at a high speed, is provided. The switches 501-502 forming the group are switched and controlled in response to the magnitudes of the neutral-point voltage and the neutral-point current at the neutral point N with a controller, which is not shown in the figure.

58. 发明专利

JPH06233459A POWER SYSTEM PROTECTIVE SYSTEM 失效
公开(公告)号：JPH06233459A
公开(公告)日：1994-08-19
申请号：JP1843693
申请日：1993-02-05
申请人： HITACHI LTD , CHUBU ELECTRIC POWER
发明人： KIDA JUNZO , ARITA HIROSHI , KUROSAWA YUKIO , YAMAGIWA TOKIO , MORITA MASAO , UEDA TOSHIAKI
IPC分类号： H02H9/02 , H02J3/04
摘要： PURPOSE:To improve the quality of power supplied by suppressing an overcurrent flowing together with a short-circuited current due to a cause other than short-circuit. CONSTITUTION:For example, a short-circuit failure has occurred at a customer located at a lower position of a power distribution system 6b, an overcurrent suppressing equipment 1b detects a short-circuit current by the overcurrent detecting function possessed by an overcurrent suppressing device 1b and suppresses the short-circuit current. On the other hand, if the cause is other than the short-circuit, an overcurrent suppressing control is performed by giving switching information 7 about a circuit breaker 2 and so forth to be switched to the overcurrent suppressing device 1b. And after the switching operation by the circuit breaker 2, the overcurrent suppressing function of the overcurrent suppressing equipment 1b is made invalid after the elapse of time in which overcurrent will cease, and a load current is applied. By doing this, the voltage fluctuations of power system can be suppressed and high quality power can be supplied.

59. 发明专利

JPH0566075A REFRIGERATION CYCLE 失效
公开(公告)号：JPH0566075A
公开(公告)日：1993-03-19
申请号：JP22625491
申请日：1991-09-05
申请人： HITACHI LTD
发明人： KAWASHIMA KENICHI , HONMA KICHIJI , UEDA TOSHIAKI , MACHIMURA HIDENORI , KOMATSUZAKI SHIGEKI
IPC分类号： F25B43/00
摘要： PURPOSE:To prevent metal parts from corrosion and protect the compressor from seizure which is due to freeze in a means of controlling the flow-rate of refrigerant, in a refrigeration cycle using a fluorohydrocarbon, such as HFC134a, as refrigerant and an open type compressor, by effectively removing the moisture contained in the refrigeration cycle by absorption by a desiccant. CONSTITUTION:In a refrigeration cycle composed of a compressor 1, condenser 2, refrigerant flow-rate-controlling means 4, evaporator 5, and piping connecting them, a moisture-removing device 6 to absorb the moisture contained in the refrigeration cycle is provided at an intermediate point in a low-pressure gas line 10 from the evaporator 5 to the compressor 1. As a result, with refrigerant of a fluorohydrocarbon, the content of saturated moisture in the refrigerant in the state of low-pressure gas is smaller than in the state of high-pressure liquid at the outlet of the compressor; thus moisture in the refrigeration cycle is absorbed by the desiccant and effectively removed therefrom.

60. 发明专利

JPH0538938A VARIABLE CAPACITY CAR AIR CONDITIONER 失效
公开(公告)号：JPH0538938A
公开(公告)日：1993-02-19
申请号：JP19638991
申请日：1991-08-06
申请人： HITACHI LTD
发明人： MACHIMURA HIDENORI , KISHI ATSUO , UEDA TOSHIAKI , TEZUKA AKIRA
IPC分类号： F04B49/10 , B60H1/32
摘要： PURPOSE:To prevent refrigerant over sealing when a low-load refrigerant is sealed in a variable capacity car air conditioning system capable of controlling the discharge quantity of a compressor. CONSTITUTION:This system is composed of a variable capacity compressor 1, condenser 2, receiver 3, expansion means, evaporator 5, piping for connecting these cycle equipments, and control system 7 for controlling the refrigerant discharge quantity of the variable capacity compressor 1. Moreover the control system 7 consists of an operation system 7a having a refrigerant sealing mode; a control unit 7b, treating information from the operation system 7a and each unshown sensor to output a control signal; and a control valve, receiving the control signal from the control unit 7b to vary the discharge capacity of the variable capacity compressor 1.

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