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1. 发明专利

JPH0929518A DEVICE FOR DRILLING HOLE IN SURFACE OF PIPE 失效
公开(公告)号：JPH0929518A
公开(公告)日：1997-02-04
申请号：JP18157095
申请日：1995-07-18
申请人： HITACHI METALS LTD , TOKYO GAS CO LTD
发明人： NAGANUMA TETSUO , IIMURA SHOICHI , FURUKAWA HIDEKI , ISHIMOTO MASA , TSUTSUMI CHIAKI , TANAKA TOSHIO
IPC分类号： B23B41/00
摘要： PROBLEM TO BE SOLVED: To easily drill a large hole in the surface of a pipe by providing a blade axial feeding device to move a tool rest in the axial direction of a pipe on a longitudinal feed table provided on a circumferential feed table. SOLUTION: A circumferential feeding device 220 of a circumferential feed table moves a circumferential feeding device 200. A longitudinal feed table 300 to be longitudinally moved by a longitudinal feeding device 250 of the circumferential feed table 200 is slidably connected to a longitudinal guide shaft 240 of the circumferential feed table 200 by a longitudinal connection part 320, and integratedly fixed to a longitudinal bush to be screwed to the longitudinal threaded shaft of the circumferential feed table 200. A blade shaft longitudinal feeding device 340 to longitudinally move a tool rest 400 is provided on the rear part of the longitudinal feed table. The circumferential feeding device 220, the longitudinal feeding device 250 and the longitudinal feeding device 340 are driven by a servo motor having a reduction gear, and the rotation is controlled by the firstly preset value. Thus, the hole of arbitrary shape and size can be drilled.

2. 发明专利

JP2002372397A Cooling system 审中-公开
标题翻译：冷却系统
公开(公告)号：JP2002372397A
公开(公告)日：2002-12-26
申请号：JP2001178363
申请日：2001-06-13
申请人： Hitachi Metals Ltd , 日立金属株式会社
发明人： IGARASHI MASASHI , TANAKA TOSHIO , OTSUKI KENJI
IPC分类号： F25D13/00 , F28F27/00
摘要： PROBLEM TO BE SOLVED: To provide a cooling system that adopts a water and refrigerant chiller system which directly cools water to be cooled without causing any problem in the environmental and safety aspects and is constituted to efficiently and effectively cool the water.
SOLUTION: This cooling system is composed of a cooling tower 30 including a cooling unit 33 through which the water to be cooled used for cooling a load is made to flow, and a cold air means which cools the unit 33 and a water cooling means 40 provided with a first hermetically sealed vessel EV; a steam compressor P1 which sucks up the steam of the water to be cooled supplied into the vessel EV; and a second hermetically sealed vessel CO which condenses the sucked-up steam. The water cooling means 40 vaporizes the water to be cooled in the first vessel EV and cools the remaining water to be cooled by utilizing the latent heat of the vaporization. The water to be cooled is selectively cooled by means of the cooling unit 33 of the cooling tower 30 and the first hermetically sealed vessel EV of the water cooling means 40.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种采用直接冷却待冷却水的水和制冷剂冷却器系统的冷却系统，而不会在环境和安全方面引起任何问题，并且构成为有效地和有效地冷却水。解决方案：该冷却系统由冷却塔30构成，冷却塔30包括冷却单元33，冷却用于冷却负载的被冷却水通过该冷却单元33流动;冷空气装置，冷却单元33和水冷装置40 设置有第一密封容器EV; 蒸汽压缩机P1，其将待冷却的水的蒸汽吸入供给到容器EV中; 以及冷凝吸入的蒸汽的第二密封容器CO。水冷装置40在第一容器EV中蒸发待冷却的水，并通过利用蒸发的潜热来冷却待冷却的剩余水。通过冷却塔30的冷却单元33和水冷装置40的第一密封容器EV选择性地冷却待冷却的水。

3. 发明专利

JP2001349655A COOLING DEVICE 失效
公开(公告)号：JP2001349655A
公开(公告)日：2001-12-21
申请号：JP2000173260
申请日：2000-06-09
申请人： HITACHI METALS LTD
发明人： IGARASHI MASASHI , TANAKA TOSHIO , OTA HITOSHI , KIKUHARA SHUJI
IPC分类号： F25D13/00 , F24F5/00
摘要： PROBLEM TO BE SOLVED: To provide a cooling device to eliminate a need for the use of a power in the daytime in which a power demand in the summer season reaches a peak and perform high-efficient cooling operation. SOLUTION: The cooling device comprises a heat transfer pipe; a cooling tower to have a fan to supply air to the heat transfer pipe and cool fluid to be cooled, returned from an apparatus to be cooled, by a flow of the fluid through the heat transfer pipe; a first chiller to have a compressor, a condenser 1, an expansion valve, and an evaporator and cool the fluid to be cooled, flowing through the cooling tower, by the passage of the fluid through the evaporator; and a second chiller to further have a compressor, a condenser 2, an expansion valve, and a heat storage tank, effect ice making in the heat storage tank in the night and stop operation in the daytime and cool the fluid to be cooled, returned from the apparatus to be cooled, by a flow of the fluid through the heat storage tank.

4. 发明专利

JPH10103840A COOLER 失效
公开(公告)号：JPH10103840A
公开(公告)日：1998-04-24
申请号：JP25938496
申请日：1996-09-30
申请人： HITACHI METALS LTD
发明人： TANAKA TOSHIO , IGARASHI MASASHI , TAKADA EIJI
IPC分类号： F25D13/00
摘要： PROBLEM TO BE SOLVED: To provide a cooler for automatically preventing freezing damage of a cooler equipment pipe in winter by eliminating drainage and filling operation of cooling water. SOLUTION: In the cooler comprising a cooling tower 1 having a plurality of layers of superposed heat transfer pipes 3, and a deep freezer having a compressor 2, a condenser 3, an expansion valve 14 and an evaporator 15 so that cooling water is sequentially passed from the tower 1 to the evaporator 15 to cool, a circulation pump 16 is started when the cooler becomes a predetermined temperature or lower during stopping, and stopped when it becomes the predetermined temperature or higher, and the water is circulated in the cooler. Further, a bypass tube 22 and a small-sized circulation pump 24 are attached between a primary side pipe 17 and a return pipe 19 of the pump 16, the pump 24 is started when it becomes a predetermined temperature or lower and stopped when it becmes the predetermined temperature or higher, and the water is circulated in the cooler.

5. 发明专利

JPH0861884A SEALED COOLING TOWER 失效
公开(公告)号：JPH0861884A
公开(公告)日：1996-03-08
申请号：JP20090994
申请日：1994-08-25
申请人： HITACHI METALS LTD
发明人： TANAKA TOSHIO , TAKADA EIJI
IPC分类号： F28F25/04 , F28D5/02 , F28F25/08
摘要： PURPOSE: To generate a water film on the entire surface of plate fins and to improve the cooling efficiency by providing a porous member for passing water in contact with the upper end of the fins of a heat exchanger, providing a sprinkling tank above it, and sprinkling the water in the tank at the fins through the member. CONSTITUTION: A porous member 40 for passing water is provided in contact with plate fins 31 of a heat exchanger 30 between a sprinkling tank 15 and the upper end of a heat exchanger 30. The tank 15 is provided at its bottom of a high position with a sprinkling port 36. The water overflowed from the port 36 is continuously fed to the upper surface of the member 40 and dropped to the fins 31 of the exchanger 30 through the member 40. The member 40 is formed of laminated glass wool 41 and sandwiched between the upper ends of the fins 31 and the lower surface of the tank 15. The water droplets adhered to the fins 31 via the wool 41 are evaporated by the air supplied by a fan 14, and exhausted from an exhaust port 12. Thus, the fins 31 are thoroughly sprinkled to improve the cooling efficiency.

6. 发明专利

JP2003161499A COOLING SYSTEM 审中-公开
公开(公告)号：JP2003161499A
公开(公告)日：2003-06-06
申请号：JP2001363373
申请日：2001-11-28
申请人： HITACHI METALS LTD , TOKYO ELECTRIC POWER CO
发明人： IGARASHI MASASHI , TANAKA TOSHIO , OTSUKI KENJI , KIKUHARA SHUJI
IPC分类号： F24F5/00 , F24F11/02 , F25B5/00
摘要： PROBLEM TO BE SOLVED: To provide a cooling system that effectively performs cooling operation without using electric power at daytime when electric power demand in summer reaches a peak. SOLUTION: The cooling system comprises: a cooling tower 1 including a heat transfer coil 11 through which water to be cooled for cooling a load passes, and a cold air means for cooling the heat transfer coil; a first chiller 20 that has a refrigerating compressor 21 for corresponding to the load, a first condenser 13, an expansion valve 22, and an evaporator 23, and that makes the water to be cooled pass through the evaporator to cool the water to be cooled; and a second chiller 25 that has a refrigerating compressor 26 for heat storage, a second condenser 12, and an expansion valve 27, and a heat storage tank 31, and that produces ice made from the water to be cooled in the heat storage tank 31 in the night. The fluid to be cooled selectively passes through the heat transfer coil 11, the evaporator 23 of the first chiller and the heat storage tank 31 of the second chiller to cool the fluid to be cooled, and the operation of the cooling tower 1, the first chiller 20, and the second chiller 25 is stopped during heat storage operation for making the water to be cooled pass through the heat storage tank 31 to cool the fluid to be cooled by ice in the heat storage tank. COPYRIGHT: (C)2003,JPO

7. 发明专利

JPH07234055A COOLING DEVICE 失效
公开(公告)号：JPH07234055A
公开(公告)日：1995-09-05
申请号：JP2643094
申请日：1994-02-24
申请人： HITACHI METALS LTD
发明人： YANAGIMACHI KIYOSHI , TANAKA TOSHIO , NIBU HITOSHI
IPC分类号： F25D13/00
摘要： PURPOSE:To provide a cooling device, which cools two kinds of refrigerant arranged in a cooling tower efficiently and which is further improved in cooling efficiency than that of a conventional cooling device. CONSTITUTION:A heat exchanging unit 30, in which a cooling water coil for cooling cooling water and a condenser coil for cooling the refrigerant of a refrigerating machine are arranged in the same plate fin tube type heat exchanger, is provided in a cooling tower 10 equipped with a ventilating device 14 while either one of the cooling water or the refrigerant is cooled by the cooling tower to increase cooling efficiency.

8. 发明专利

JPH07158896A COOLING EQUIPMENT OF WORK PLACE IN FRONT OF FURNACE 失效
公开(公告)号：JPH07158896A
公开(公告)日：1995-06-20
申请号：JP30802493
申请日：1993-12-08
申请人： HITACHI PLANT ENG & CONSTR CO , HITACHI METALS LTD
发明人： YOMO NOBUO , SHIRAI TSUTOMU , TANAKA TOSHIO , TAKADA EIJI
IPC分类号： F24F3/00 , F27D99/00 , F27D23/00
摘要： PURPOSE:To obtain cooling equipment of a work place in front of a furnace which can cool effectively a high-heat work place having an electric furnace or the like by simple equipment and, moreover, causes no hindrance to work. CONSTITUTION:On a work floor 28 having an electric furnace 12, the front thereof being the side for work for the furnace 12 is surrounded by a partition member 34 in the shape of U and a cold air outlet 36 is provided in the face of the partition member 34 being opposite to the furnace 12 so that cold air be let out toward the furnace 12, while an air outlet pipe 52 is provided in front of and below the furnace 12 so that air be let out upward along the front of the furnace 12. According to this constitution, a space 66 to be cooled of which the longitudinal section is in the shape of a recession is formed by the work floor 28, the partition member 34 and the wall of an air curtain 54 formed by the air outlet pipe 52 and the cold air is let out from the cold air outlet 36 into this space 66 to be cooled. Since the cold air of a large density let out from the cold air outlet 36 fills the space 66 to be cooled, accordingly, the space 66 can be cooled effectively. Since the upper part of the space 66 to be cooled is opened and the front of the furnace 12 is opened through the intermediary of the air curtain 54, moreover, no problem occurs for work.

9. 发明专利

JPH0763457A COOLING APPARATUS 失效
公开(公告)号：JPH0763457A
公开(公告)日：1995-03-10
申请号：JP20910293
申请日：1993-08-24
申请人： HITACHI METALS LTD
发明人： TAKADA KOJI , TANAKA TOSHIO
IPC分类号： F25D13/00
摘要： PURPOSE:To keep cooling water temperature at a port of a cooling tower unchanged irrespective of the presence of operation of a freezer by cooling a condenser in the cooling tower through water sprinkling and ventilation, and cooling the water cooled through the cooling tower through an evaporator of the freezer. CONSTITUTION:A freezer includes a refrigerant compressor 21, a condenser 22 for cooling and liquefying a compressed refrigerant, and an evaporator 23 for evaporating the liquefied refrigerant through an expansion valve for heat exchange with an article to be cooled. The condenser 22 is disposed in a ventilating/cooling tower 1 and is cooled through water sprinkling and air ventilation. A cooling coil 11 for cooling water is disposed around ventilating/cooling tower 1, which the cooling water after cooling external apparatuses and being heated and returned enters through an inlet 12 thereof. The cooling water effused from the cooling coil 11 serves to further cool the evaporator 23 and goes out from a cooling water outlet. Hereby, cooling water is cooled through the cooling tower to the same temperature irrespective of the presence of operation of a freezer.

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