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51. 发明专利

JP2003118396A FUEL CELL AUTOMOBILE 审中-公开
公开(公告)号：JP2003118396A
公开(公告)日：2003-04-23
申请号：JP2001314744
申请日：2001-10-12
申请人： HITACHI LTD
发明人： ITO MASAAKI , TAKEDA FUMIO , KAMETANI HIROCHIKA , KASAHARA MASAYUKI , NISHIMURA HITOSHI
IPC分类号： B60K1/04 , B60H1/03 , B60H1/22 , B60K11/04 , B60L11/18 , H01M8/00 , H01M8/04 , H01M8/10
摘要： PROBLEM TO BE SOLVED: To excellently arrange radiators for reducing a size of a fuel cell automobile, in which supply of a compressed air controlled to be about 80 deg.C to a mounted fuel cell main body is necessary, and air-cooled after-cooler is required as a discharge air temperature from an air compressor reaches about 200 deg.C, while a radiator for cooling the fuel cell main body and car-cooler capacitor are also required. SOLUTION: The air-cooled after-cooler 4 for cooling high temperature air from the air compressor 3 and the fuel cell cooling radiator 9 are integrated together and arranged on the cooling air downstream side of the car-cooler capacitor 10. A single cooling fan 5 can be used in common for these radiators. Consequently, a heat radiation system of the fuel cell automobile is reduced in size and weight, and fuel cell automobile can be provided at a low cost.

52. 发明专利

JP2003086224A FUEL CELL AND ITS COMPRESSED AIR SUPPLY SYSTEM 审中-公开
公开(公告)号：JP2003086224A
公开(公告)日：2003-03-20
申请号：JP2001272856
申请日：2001-09-10
申请人： HITACHI LTD
发明人： KAMETANI HIROCHIKA , TAKEDA FUMIO , KASAHARA MASAYUKI , NISHIMURA HITOSHI
IPC分类号： H01M8/06 , H01M8/04
摘要： PROBLEM TO BE SOLVED: To enable to rapidly supply compressed air even if environmental conditions and required conditions are fluctuated in a fuel cell. SOLUTION: The fuel cell stack 52 has an air chamber 55 to which the compressed air obtained by compressing atmospheric air by a compressor 5 is led. As for an exhaust gas discharged from the air chamber, energy is recovered when it is expanded in an expander 60. The compressor and the expander are connected via the air chamber of the fuel cell stack by pipings 65, 66. A pressure detecting means 1 detects the pressure of exhaust gas to circulate in the pipings, and a throttle valve 2 controls an exhaust flow volume inhaled into the expander based on this value.

53. 发明专利

JP2002310081A SCREW TYPE FLUID MACHINE FOR FUEL CELL 失效
公开(公告)号：JP2002310081A
公开(公告)日：2002-10-23
申请号：JP2001113396
申请日：2001-04-12
申请人： HITACHI LTD
发明人： KAMETANI HIROCHIKA , NISHIMURA HITOSHI , KASAHARA MASAYUKI , MACHIDA SHIGERU
IPC分类号： F04C18/16 , F01C11/00 , F04C23/00 , F04C23/02 , F04C25/02 , H01M8/04 , H01M8/06
摘要： PROBLEM TO BE SOLVED: To integrate a compressor with an expander used for a fuel cell, to miniaturize the device and to enhance its efficiency. SOLUTION: This screw type fluid machine is provided with a male rotor 1 and a female rotor 2. The male rotor is formed by integrating two male rotors 1a and 1b together and the female rotor 2 is formed by integrating two female rotors 2a and 2b together. The torsion directions and the pitches of the two male rotors 1a and 1b are the same. A first screw device 100 is operated as the compressor while a second screw device 110 is operated as the expander. Exhaust of the fuel cell is guided to the second screw device.

54. 发明专利

JP2001214863A LIQUID REFRIGERANT PUMP AND ICE HEAT ACCUMULATING AIR- CONDITIONING SYSTEM HAVING THIS PUMP 失效
公开(公告)号：JP2001214863A
公开(公告)日：2001-08-10
申请号：JP2000030222
申请日：2000-02-02
申请人： HITACHI LTD
发明人： KAMETANI HIROCHIKA , HEIKO KENJI , SADAMORI HIROYUKI , CHIAKI TAKAO , NISHIMURA TAKANORI
IPC分类号： F04B39/06 , F24F5/00
摘要： PROBLEM TO BE SOLVED: To realize a hermetic and highly reliable liquid refrigerant pump as well as to provide an ice heat accumulating air-conditioning system capable of efficiently utilizing the liquid refrigerant pump. SOLUTION: A motor part 12 and a pump part 11 are isolated in pressure. The pump part 12 has at least two communicating passages 21, 25 for communicating with an external part by penetrating through a chamber wall surface. The respective communicating passages 21, 25 have a self-cooling passage 31 acting as an inlet or an outlet of a liquid refrigerant and reaching the motor part 11 by branching off from a midway part of a liquid refrigerant passage reaching the outlet from the inlet. The self-cooling passage 31 is constituted so as to include an orifice and a passage for repeating an ascent-descent in order from a branch part. The motor part 12 has a communicating passage 28 for communicating with the external part by penetrating through the chamber wall surface.

55. 发明专利

JP2001115860A COMBUSTOR SUPPORTING STRUCTURE 失效
公开(公告)号：JP2001115860A
公开(公告)日：2001-04-24
申请号：JP29180199
申请日：1999-10-14
申请人： HITACHI LTD
发明人： SEKIHARA TAKASHI , MACHIDA TAKASHI , KAMETANI HIROCHIKA , SAITO TAKEO
IPC分类号： F02C7/20
摘要： PROBLEM TO BE SOLVED: To provide a transition piece with rigid support structure not having local high temperature area and high stress area, in a combustor for a gas turbine, and to assure high reliability by securing cooling performance. SOLUTION: This combustor supporting structure of this invention comprises a fuel spray nozzle; a cylindrical liner to perform combustion at an internal part; a transition piece to transfer working fluid from the cylindrical flow passage of a liner to the annular flow passage of a gas turbine; and a flow sleeve positioned outside the liner and the transition piece for promoting cooling of an outer surface. A support plate having hinge structure vertical to the transition piece and parallel to a flow of working fluid is welded to the outlet part of the transition piece.

56. 发明专利

JPH11336679A SCREW COMPRESSOR 失效
公开(公告)号：JPH11336679A
公开(公告)日：1999-12-07
申请号：JP14690498
申请日：1998-05-28
申请人： HITACHI LTD
发明人： KAMETANI HIROCHIKA , URASHIN MASAYUKI , HIDA TAKESHI , NOZAWA SHIGEKAZU , HAYASE ISAO
IPC分类号： F04C18/16
摘要： PROBLEM TO BE SOLVED: To improve performance and reliability by providing a radial displacement means for displacing the rotational center position of a screw rotor to a bore face so as to compensate displacement caused by gas pressure and displacement caused by thermal deformation and to maintain a clearance around an operating chamber particularly in a high pressure state into an appropriate range. SOLUTION: When a male rotor 1 and a female rotor 2 in a screw compressor are rotatory-driven, gas sucked from a discharge opening 7 is compressed and discharged from a discharge opening 8. At this time, the internal pressure of an operating chamber 4 in discharge action becomes highest, and gas load summing up the total pressure of the operating chamber 4 including this internal pressure acts upon both rotors 1, 2 approximately in the opposite directions 11, 12 to the discharge opening 8 from the axial view so as to cause the flexural deformation of the respective rotors 1, 2. A cylinder 25 into which the discharge pressure of the compressor is led is therefore provided, and its piston rod 26 is delivered to turn a nut 22. A column 23 is therefore screwed forward to generate load 17 so as to offset the deformation in the direction of an arrow mark 12 of the female rotor 2 particularly deformed large.

57. 发明专利

JPH11336663A PACKAGE TYPE AIR COOLED COMPRESSOR 失效
公开(公告)号：JPH11336663A
公开(公告)日：1999-12-07
申请号：JP14539198
申请日：1998-05-27
申请人： HITACHI LTD
发明人： KURITA SHIN , KAMETANI HIROCHIKA , KAMIYA YUJI
IPC分类号： F04B39/06 , F04D29/44 , F04D29/66
摘要： PROBLEM TO BE SOLVED: To improve tone color due to an inlet port and an exhaust port by a fluid increasing with the increment of a compressed air quantity. SOLUTION: An exhaust port of this package type air cooled compressor comprises a plurality of vertical members 21 having kept both of width B1 and inner length constant in the Y direction and a plurality of horizontal members 22 making both of width B2 and the inner length variable in the X direction plus a frame 23 enclosing these members. With this constitution, the frequency of a fluidic sound is dispersed around, whereby a peak as a frequency component has shrunk almost to nothing, so that a tone color is well improved.

58. 发明专利

JPH11117887A SCREW COMPRESSOR 失效
公开(公告)号：JPH11117887A
公开(公告)日：1999-04-27
申请号：JP28339497
申请日：1997-10-16
申请人： HITACHI LTD
发明人： HIDA TAKESHI , NOZAWA SHIGEKAZU , URASHIN MASAYUKI , KAMETANI HIROCHIKA
IPC分类号： F04C29/06 , F04C29/02 , F04C29/12
摘要： PROBLEM TO BE SOLVED: To reduce noise and vibration and improve oil separating efficiency in discharge gas by fixing a relatively small diameter pipe to a discharge pas sage of a discharge cover in a state of one end being inserted in the space of the discharge passage, and opening the other end of the pipe into a discharge chamber. SOLUTION: When a male rotor 6 and a female rotor are rotated by a motor 7, low pressure refrigerant gas taken in from an intake port 8 passes a gas passage between the motor 7 and a casing 1 to cool the motor 7 and then is taken into the meshed tooth surfaces of the male and female rotors and a compression chamber in the casing from an intake port 9. After being compressed, the refrigerant gas is led to a discharge passage 15 through a discharge port 17 formed at a discharge cover 3 and discharged into a discharge chamber 4 through a pipe 20. In this case, the pipe 20 is inserted in the discharge passage 15 only by the length corresponding to 1/4 of wavelength of sound wave. The crest of sound wave and the trough of sound wave reflected by a shielding plate 19 interfere with each other to reduce amplitude of pulsation so as to reduce noise and vibration.

59. 发明专利

JPH10299675A EXTERNAL DRIVING TYPE SCROLL COMPRESSOR 失效
公开(公告)号：JPH10299675A
公开(公告)日：1998-11-10
申请号：JP10452797
申请日：1997-04-22
申请人： HITACHI LTD
发明人： KAMETANI HIROCHIKA , MACHIDA SHIGERU , SHIIKI KAZUAKI
IPC分类号： F04C18/02
摘要： PROBLEM TO BE SOLVED: To provide an external driving type scroll compressor low in vibrating noise and high in reliability by realizing a rotating system balanced at a sufficient accuracy. SOLUTION: A gravity center moving operation of either of mass adding working, mass removal working, and different material replacement working is applied to a swing scroll member 1, and the gravity center position of the swing scroll member 1 is positioned in a plane including the axial centerline of a bearing pivoting the eccentric part of those crankshafts 3 and 4 in parallel with each other. Thus a balancing weight 5 provided with the crankshafts 3 and 4 is offset with a centrifugal force by a swing mass, and the rotating balance is kept.

60. 发明专利

JPH10159762A OIL FEEDING TYPE SCREW COMPRESSOR 失效
公开(公告)号：JPH10159762A
公开(公告)日：1998-06-16
申请号：JP32133296
申请日：1996-12-02
申请人： HITACHI LTD
发明人： UCHIDA RIICHI , KAMETANI HIROCHIKA , AOKI MASAKAZU
IPC分类号： F04C18/16
摘要： PROBLEM TO BE SOLVED: To efficiently cool the air of high temperature under compression and reduce the volume of oil to be fed by applying the constitution that a nozzle open to an operation chamber and used for injecting oil is provided at the low pressure side and the high pressure side of a casing respectively, and oil is injected from the low pressure bore of the compression chamber of the casing, in addition to the high pressure bore thereof. SOLUTION: An intake hole 7 is formed on the main casing 3 of a screw compressor. Also, a high pressure nozzle 8 is provided at the high pressure bore of the casing 3, and a low pressure nozzle 9 is provided at the low pressure bore. In addition, an intake port 10 and a delixzery port 11 are formed on the inner side of the easing 3. Then, when a male rotor 1 housed in the main casing 3 is turned on the operation of a motor 1, the air is drawn from the intake hole 7 in cooperation with a female rotor 2, and the air after compression is discharged from a delivery port 5. During this compression stroke, oil is injected from the high pressure nozzle 8 and the low pressure nozzle 9, thereby cooling the high pressure air having high temperature due to compression, and providing a sealing function for a gap around the male and female rotors 1 and 2 as well as a lubricating function therefor.

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