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21. 发明专利

JP2001355759A METHOD OF BRANCHING PIPE 失效
公开(公告)号：JP2001355759A
公开(公告)日：2001-12-26
申请号：JP2000176387
申请日：2000-06-13
申请人： HITACHI METALS LTD
发明人： NIBU HITOSHI , ISHIBE FUMIKAZU , KOMIYA MICHITSUGU , SAIGO HIDEKAZU
IPC分类号： E03B7/00 , F16L1/024
摘要： PROBLEM TO BE SOLVED: To provide a method of branching pipes allowing branching of a pipe by minimizing a excavating size from the ground, and economically branching a supply pipe from the underground buried pipes for such as city water and gas in a short working period. SOLUTION: In this branching method, a resin branch pipe is inserted from the ground into a buried resin main pipe, the resin branch pipe is pressed against the side surface of the resin main pipe and rotated to fuse them with each other by a friction heat, a drilling device is inserted into the fused branch pipe and a branch hole is drilled in the main pipe, and the branch pipe is branched from the main pipe. A resin joint is connected to the end of the resin branch pipe, and rotated by pressing the resin joint against the main pipe. A closed surface can be provided at the end of the resin joint, a projected part projecting in an axial direction can be provided on the closed surface, and an extension part can be provided at the end part.

22. 发明专利

JPH05196258A AIR-CONDITIONING FACILITY 失效
公开(公告)号：JPH05196258A
公开(公告)日：1993-08-06
申请号：JP26039892
申请日：1992-09-30
申请人： HITACHI METALS LTD
发明人： YANAGIMACHI KIYOSHI , TAKAHASHI SHINZO , KATSUYAMA KOICHIRO , NIBU HITOSHI , NAKAGAWA TAKESHI
IPC分类号： F24F3/00 , F24F3/06 , F24F3/16 , F24F5/00 , F24F7/06 , F25B19/00
摘要： PURPOSE:To permit easy cooling with cooling water having a high temperature by a method wherein return air, cooled through sensitive heat cooling, is mixed with outdoor air, whose temperature and humidity are regulated optimally, to supply it into a clean room. CONSTITUTION:Air, passed through a heat exchanger 61 provided in an air- conditioning unit 6 and cooled through sensitive heat cooling, is sent into a garret 44 by a fan 63 through a conduit 64. Air, regulated by an outdoor air regulating device 7 introducing outdoor air through an outdoor air intake 76 and regulating it so as to have optimum temperature and humidity, is supplied into the garret 44 through the conduit 74 by a fan 3. Both of the cooled air and regulated air, which are sent into the garret 44, are mixed with each other and is supplied into a clean room 43 through a clean room module 5. The temperature of air, cooled through sensitive heat cooling, is high in such a manner whereby cooling water, having higher temperature than the same so far, can be used.

23. 发明专利

JPH03187402A RADIATOR FOR EXTINGUISHING SNOW 失效
公开(公告)号：JPH03187402A
公开(公告)日：1991-08-15
申请号：JP32546889
申请日：1989-12-15
申请人： NIPPON TETSUDO KENSETSU KODAN , NIPPON STEEL CORP , HITACHI METALS LTD
发明人： FUJISAKI TADASHI , SAKAI MASAKATSU , SUEHIRO SHOICHI , TAKEUCHI TAKASHI , FUKUSHIMA SHUJI , NIBU HITOSHI
IPC分类号： E01H5/10 , E01B19/00 , E01C11/26 , F28D1/03
摘要： PURPOSE:To enable service water to be circulatedly used without providing a dust-removing tank or a settling tank by circulating hot water in wide shallow flow passages formed both by a thin flat plate whose upper surface is made to be a heat-radiating surface and by a corrugated thin plate provided under the flat plate. CONSTITUTION:To the undersurface of a thin flat plate 13 whose upper surface is made to be heat-radiating surface, a corrugated thin plate 14 having continuous recessed parts consisting both of a plurality of rows of wide shallow recessed parts and of wide shallow recessed parts connecting the adjacent rows of the above recessed parts is joined. At both ends of the wide narrow flow passages 11 formed both by the continuous recessed parts of the corrugated thin plate 14 and by the flat plate 13, piping connecting ports are provided. And by circulating hot water or the like in the inside of these flow passages 11, snow on the flat plate is heated through indirect contact, and is melted.

24. 发明专利

JPH02267484A COOLING DEVICE 失效
公开(公告)号：JPH02267484A
公开(公告)日：1990-11-01
申请号：JP8656889
申请日：1989-04-05
申请人： HITACHI METALS LTD
发明人： FUKUSHIMA SHUJI , NIBU HITOSHI
IPC分类号： F25D17/02 , F25D13/00 , F28F27/00
摘要： PURPOSE:To improve an operating efficiency of a freezing cycle and reduce a consumption of electrical power by a method wherein two cooling towers are arranged side-by-side, cooled fluid is cooled by one cooling tower and refrigerant of compressive freezing cycle is cooled by the other cooling tower. CONSTITUTION:A compressor 42, an expansion valve 44 and an evaporator 45 are arranged below two cooling towers A and B having a coiling part 31, a water spraying tank 35, a water receiving tank 36, a water feeding passage 36 and a fan 40. Cooled fluid is cooled by the cooling tower A and refrigerant of a compressive freezing cycle is cooled with the cooling tower B being applied as a condensor 43. A piping 47 may feed cooled fluid under a cooling at A to an outer equipment 48 through an evaporator 45 arranged at the lower part of it. The pipe 47 is provided with a thermostat 51 for producing a signal after detecting a temperature of the cooled fluid. In case that a temperature of the cooled fluid is more than a set temperature, an amount of dispersion in the cooling tower A is properly increased and after it reaches a predetermined amount of dispersion, a compressor 42 is operated and if a temperature of the cooled fluid is less than a set temperature, the compressor 42 is stopped and then an amount of water dispersion is properly decreased.

25. 发明专利

JPH02197778A COOLING DEVICE 失效
公开(公告)号：JPH02197778A
公开(公告)日：1990-08-06
申请号：JP1872689
申请日：1989-01-27
申请人： HITACHI METALS LTD
发明人： YANAGIMACHI KIYOSHI , NIBU HITOSHI
IPC分类号： F25D13/00 , F25B1/00 , F28F27/00
摘要： PURPOSE:To relax the transient change of the temperature of fluid to be cooled which is fed to a device during the starting and the stop of a compressor by a method wherein when the compressor is started, a blast amount of a fan is temporarily decreased, and when the compressor is to be stopped, a blast amount of a fan is temporarily increased. CONSTITUTION:A cooling device is provided with a cooling tower 1 having a heat transfer pipe 2 and a fan 3 to feed blast to a the heat transfer pipe, a chiller 10 having a compressor 11, a condenser 12, an expansion valve 13, and a vaporizer 14, and a refrigerant circulating therethrough, and a line through which, after fluid to be cooled returned from a device 20 to be cooled is guided in order of the cooling tower 1 and the vaporizer 14, it is fed to the device 20. In this cooling device, when the compressor 11 is started or stopped, the temperature of a temperature detector 23 is transiently sharply decreased or increased, and is inconvenient to cooling of a precision device. In which case, when the compressor 11 is started, a blast amount of the fan 3 is temporarily decreased in linkage with the starting of the compressor, and when stopped, control is effected so that the blast amount is increased. This constitution improves transient characteristics of the outlet temperature of the vaporizer 14.

26. 发明专利

JP2004251361A Coupling joint and working method therefor 审中-公开
公开(公告)号：JP2004251361A
公开(公告)日：2004-09-09
申请号：JP2003041863
申请日：2003-02-19
申请人： Hitachi Metals Ltd , 日立金属株式会社
发明人： FUJIYOSHI MINORU , NIBU HITOSHI , TOKU TAKASHI
IPC分类号： F16L1/00
摘要： PROBLEM TO BE SOLVED: To provide a coupling joint capable of reliably and easily checking completion of a pipe coupling work.
SOLUTION: In the coupling joint to connect pipes 4 to pass fluid, optical functional members 12, 42 and 60 to check completion of a coupling work are formed on a part of an outer surface of the coupling joint. The optical functional members include a luminescent material and a light reflective material. The luminescent material is diffused in solvent and used for luminous paint. By checking the state of the optical functional members by irradiating inspection beams on the coupling joint after performing the coupling work, whether or not the coupling work is completed is rapidly and easily checked.
COPYRIGHT: (C)2004,JPO&NCIPI

27. 发明专利

JP2002124289A SOLID ELECTROLYTE FUEL CELL SYSTEM 失效
公开(公告)号：JP2002124289A
公开(公告)日：2002-04-26
申请号：JP2000319302
申请日：2000-10-19
申请人： HITACHI METALS LTD
发明人： OKAMOTO MASAYUKI , NIBU HITOSHI , MORIZAKI KATSUHIKO
IPC分类号： H01M8/12 , H01M8/06 , H01M8/24
摘要： PROBLEM TO BE SOLVED: To provide a solid electrolyte fuel cell system needing a small installation space, and having good energy efficiency and a simple structure. SOLUTION: In this solid electrolyte fuel cell system, a cell stack 2, a burner 4 and a reformer 3 are disposed in an integration type vessel or a pressure vessel in that order from the lower side to the upper side of the vessel, and heat radiated from the cell stack is applied to an apparatus disposed in the upper part. The cell stack 2, the burner 4, the reformer 3 and a desulfurizer 8 can be disposed in that order from the lower side to the upper side of the vessel, plural tiers of partitions 13, 14, 15, 16, 17 and 18 are installed in the vessel to form plural space parts 20, 21, 22, 23, 24 and 25, and the cell stack, the burner and the reformer are disposed in the respective space parts.

28. 发明专利

JP2000346256A JOINT FOR CORRUGATED PIPE 失效
公开(公告)号：JP2000346256A
公开(公告)日：2000-12-15
申请号：JP15617199
申请日：1999-06-03
申请人： HITACHI METALS LTD
发明人： NIBU HITOSHI , SAITO KENICHI , MATSURU MANNISH , ISHIBE FUMIKAZU
IPC分类号： F16L21/00
摘要： PROBLEM TO BE SOLVED: To stably seal by a packing by installing the packing in contact with a corrugated recess part and a connecting port inside face of a joint body and a spacer providing a packing installation part drawing the packing to the side face of the corrugated recess part and installing it therein in the corrugated recess part of a corrugated pipe. SOLUTION: A plastic corrugated pipe 10 is formed by providing an independent corrugated pipe 12 having an annular independent corrugated crest in the outside of a cylindrical pipe 11, and the corrugated pipes 10, 10 are connected by a joint 20. The joint 20 has a stopper 21 extended to the inside in the central part and tapered cylindrical connecting ports 22, 22 opened to an opening side are connected to its both sides. In connecting the corrugated pipes 10, 10, a plastic spacer 30 of a circumferentially two-split structure and a rubber packing 40 of a wedge-shaped cross section are installed on the corrugated recess 13 of a first crest in the end of each pipe 10 and each pipe 10 is inserted in the joint 20 in such a state that the side of the corrugated recess of the pipe 10 end is allowed to abut on the side face of the stopper 21.

29. 发明专利

JP2000263160A FORMING DEVICE OF METAL TUBE 失效
公开(公告)号：JP2000263160A
公开(公告)日：2000-09-26
申请号：JP6603799
申请日：1999-03-12
申请人： MATSUSAKA TEKKOSHO KK , HITACHI METALS LTD
发明人： MAEDA TATSUO , NIBU HITOSHI , SAIGO HIDEKAZU
IPC分类号： B21D39/04 , B21D39/20
摘要： PROBLEM TO BE SOLVED: To dispense with a rust preventive treatment by hardly causing a scratch and to form a metal tube by a simple way and at a low cost by providing a device consisting of an insert shaft part forming a fit part to engage the end part of a metal tube to be fitted, plural forming shoes for metal tube working retractably outward arranged in the insert shaft part and a copying inclined face to retract the forming die. SOLUTION: A joint J is fitted in the tip of a metal tube M so that a reduced part S of the joint J is abutted on an engaging part 5. An insert shaft part 3 is fitted up to the opening of the metal tube M to be engaged to the engaging part 4. When a hydraulic pressure is supplied from a piping 9, a piston 8b as well as a conical part 7a are moved rightward, a forming shoe is pushed out in the outer diameter direction of the insert shaft part 3 by moving a copying inclined face, the metal tube M is effectively pressurized without generating variance in thickness decrease, etc. When the piston 8b is retracted to a max, a protrusion quantity of a mountain shaped protrusion 6c is made max, a bulged part is formed. The bulged part is positioned in an expanded recessed part H, the joint J and the metal.

30. 发明专利

JP2000193167A CONNECTION STRUCTURE OF INDEPENDENT CORRUGATED PIPE 失效
公开(公告)号：JP2000193167A
公开(公告)日：2000-07-14
申请号：JP36840098
申请日：1998-12-25
申请人： HITACHI METALS LTD
发明人： NIBU HITOSHI , MATSURU MANNISH , SAITO KENICHI
IPC分类号： F16L33/00 , F16L33/28
摘要： PROBLEM TO BE SOLVED: To obtain a sufficient sealing by attaching and detaching a ring-shaped rubber packing by making an inner diameter of the ring-shaped rubber packing smaller than an outer diameter of a hill of an independent corrugation, and larger than the average of the outer diameter of a bottom between the adjacent independent corrugations and an outer diameter of the hills of the independent corrugations. SOLUTION: A ring-shaped rubber packing 3 is fitted between the adjacent independent corrugations 11 separated from end parts of independent corrugated pipes 1, 1' by several hills, its outer diameter is slightly larger than the cylindrical parts 22, 22' of a pipe fitting 2 in a free condition, and an outer periphery of the ring-shaped rubber packing 3 is pressed by an inner surface of the cylindrical part 22 to be sealed when the pipe fitting 2 is externally inserted. An inner diameter of the ring-shaped rubber packing 3 is larger than the average of the outer diameter of a bottom between the adjacent independent corrugations and an outer diameter of he hills of the independent corrugations in a state fitted on an outer periphery between the adjacent independent corrugations, and is smaller than an outer diameter of the hill of the independent corrugation. Whereby the packing can be sufficiently tightened, and the sealing effect is not lowered.

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