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1. 发明专利

JP2000285555A OPTICAL DISK DEVICE 失效
公开(公告)号：JP2000285555A
公开(公告)日：2000-10-13
申请号：JP9242599
申请日：1999-03-31
申请人： HITACHI LTD , HITACHI MEDIA ELECTRON KK
发明人： KIMURA KATSUHIKO , YAMAUCHI YOSHIAKI , KATO MORIKAZU , SHIMIZU ISATO , SATAKE MITSUO , WATANABE MASAYOSHI , SUENAGA HIDEO , IIZAKA SHINYA
IPC分类号： G11B7/00 , G11B7/004 , G11B17/00 , G11B17/03
摘要： PROBLEM TO BE SOLVED: To suppress the vibration of a disk by providing a hole, a projection, or a hollow of specific size on the surface of a disk conveying member, conveying the mounted disk, where the disk is mounted at a specific distance from the center of rotation of the disk in addition to an opening part into which an optical pickup is inserted. SOLUTION: On the surface of the disk conveying member where the disk is mounted, the hole, projection, or hollow which is >=2% of the projection area of the disk is provided at a distance of >=75% of the radius of the disk from the center of rotation of the disk. Air flows in and out of the opening part into which the optical pickup 4 provided to the disk conveying member 2 and the newly formed hole 11 and air flowing onto the top surface of the disk 1 is reduced to eliminate the coincidence between a pressure distribution caused by the flow of air generated when the disk rotates fast and the vibration mode of the disk, thereby reducing the vibration of the disk.

2. 发明专利

JPH10306700A VENTILATION FACILITY OF AUTOMOBILE ROAD TUNNEL 失效
公开(公告)号：JPH10306700A
公开(公告)日：1998-11-17
申请号：JP11567897
申请日：1997-05-06
申请人： HITACHI LTD
发明人： SHIMIZU ISATO , TAKATSU YASUSHI
IPC分类号： E21F1/00 , E21F1/10
摘要： PROBLEM TO BE SOLVED: To perform flexible ventilation corresponding to the situation by constituting a tunnel ventilation device of an auxiliary adit running along a tunnel adit and having adit openings on both the ends, a blower set on each adit opening, communicating openings formed on partitions wall and a pair of movable opening and closing doors in the communicating openings respectively. SOLUTION: In a ventilation system of the state in which automobiles run from right to left, the opening and closing door 10 of an communicating opening 10 and the opening and closing door 15 of a communicating opening 9 near both the ends of respective auxiliary adits 3 are made a releasing state, the opening and closing doors 11-14 of the intermediate part are made an open state and blowers 6A, 6B flow the air from right to left. An air current a blower 5A supplies flows along an arrow 17 in the auxiliary adit 3, and flows in a tunnel adit 2 by the opening and closing door 15 in the open state. The air in the tunnel adit 2 passes through the opening and closing door 10 in the open state along an arrow 16, flows in the auxiliary adit 3 again and is discharged in the atmosphere by a blower 5B. Thus, the air in the tunnel adit 2 does not stagnate. Thereby flexible ventilation copying with the situation is performed.

3. 发明专利

JPH09280195A MIXED FLOW PUMP EQUIPPED WITH VOLUTE CASING 失效
公开(公告)号：JPH09280195A
公开(公告)日：1997-10-28
申请号：JP9380596
申请日：1996-04-16
申请人： HITACHI LTD
发明人： SHIMIZU ISATO
IPC分类号： F04D29/44 , F03B3/12 , F03B11/02
摘要： PROBLEM TO BE SOLVED: To improve the structural strength of a volute tongue part by forming the tongue part of a volute casing toward an impeller for its hub side and away from the impeller and twisted for its shroud side. SOLUTION: A tongue part 2 and a hub side 6 are formed to be twisted toward an impeller 1 and a shroud side 7 is formed to be twisted away from the impeller 1. Thus, a secondary flow component flowing along the hub side wall 4 of a volute is guided to an inner volute 9. Conversely, a secondary flow component 7 flowing along the shroud side 5 of the volute is guided to an outer volute. A sectional form 18 in a center surface 15 is set in parallel with a flowing direction 13 from the impeller 1 according to designing specifications. The tip of the tongue part 2 is placed in parallel as a whole with a flow combining secondary flow components 12 and 13. Since the sectional secondary moment of the tip part of the tongue part 2 is increased, a rigid structure is provided against shearing forces produced by the secondary flows 12 and 13. Thus, the strength of the volute tongue part is increased.

4. 发明专利

JP2014163661A Air conditioning control device of data center 有权
标题翻译：数据中心空调控制装置
公开(公告)号：JP2014163661A
公开(公告)日：2014-09-08
申请号：JP2013038342
申请日：2013-02-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHIMIZU ISATO
IPC分类号： F24F11/02 , F24F7/06 , G06F1/20 , G06F9/50 , H05K7/20
CPC分类号： H05K7/20836
摘要： PROBLEM TO BE SOLVED: To provide an air conditioning control device capable of achieving a total power saving of a data center with a simple configuration.SOLUTION: An intake air temperature difference computing part 304a calculates an amount of variation of air temperature ΔT(i) at an intake port of an i-th device on the basis of a position information p(i) of the i-th device and an air flow rate Q (i) of air flowing inside the i-th device. A temperature sensitivity computing part 304b calculates a temperature sensitivity a (i, j) that is a value obtained by dividing ΔT(i) by ΔT(j). An intake air temperature computing part 304c calculates an air temperature T(i) of at the inlet of the i-th device on the basis of the air temperature T(j) and the temperature sensitivity a (i,j).
摘要翻译：要解决的问题：提供能够以简单的结构实现数据中心的总功率节省的空调控制装置。解决方案：进气温度差计算部304a计算空气温度变化量Dgr; T（ i）基于第i装置的位置信息p（i）和在第i装置中流动的空气的空气流量Q（i）在第i装置的进气口处。温度敏感度计算部304b计算作为通过将＆Dgr; T（i）除以＆Dgr; T（j）而获得的值的温度敏感度a（i，j）。进气温度计算部304c基于空气温度T（j）和温度敏感度a（i，j）计算第i装置的入口处的空气温度T（i）。

5. 发明专利

JP2002269950A MAGNETIC DISK DEVICE 审中-公开
公开(公告)号：JP2002269950A
公开(公告)日：2002-09-20
申请号：JP2002067801
申请日：2002-03-13
申请人： HITACHI LTD
发明人： TOKUYAMA MIKIO , SHIMIZU ISATO , IMAI SATOMITSU , SAEGUSA SHOZO , SEGA MASAHIKO , OKAZAKI TOSHIHISA , YAMAGUCHI YUZO
IPC分类号： G11B33/12 , G11B25/04
摘要： PROBLEM TO BE SOLVED: To provide a magnetic disk device that attains compatibility between a high speed drive and highly accurate positioning by suppressing occurrence of flutter otherwise increased by high speed rotation of a disk resulting in increasing a head positioning error. SOLUTION: A shroud (outer wall) surrounding the disk is provided at the surrounding of an outer circumferential side of the disk and narrowing a distance from an end face of the disk to the shroud up to a prescribed value can eliminate a difference of a pneumatic pressure caused between both sides (front and rear sides) of the disk resulting in decreasing the flutter.

6. 发明专利

JP2000311324A MAGNETIC HEAD SUPPORTING DEVICE AND DISK DEVICE 失效
公开(公告)号：JP2000311324A
公开(公告)日：2000-11-07
申请号：JP35264899
申请日：1999-12-13
申请人： HITACHI LTD
发明人： SHIMIZU ISATO , NAKAZATO NORIO , NAKAMURA SHIGEO , TOKUYAMA MIKIO , MATSUMOTO MASAAKI , SHIROISHI YOSHIHIRO , SHIMIZU TOSHIHIKO
IPC分类号： G11B5/60 , G11B21/21
摘要： PROBLEM TO BE SOLVED: To provide a mounting method, wherein while heat is radiated from a reading/writing IC, the reading/writing IC is mounted on an arm portion for supporting a head, and no thermal expansion occurs in the arm itself. SOLUTION: The chip 7 of a reading/writing IC is connected to a wiring printed board 4, a heat sink is tightly fixed to the side of the IC chip 7 opposite a connection terminal by heat conductive adhesive, and a gap is provided between a suspension portion for supporting a head and the heat sink 8. Thus, in a magnetic disk device, by shortening a distance from a reading/writing head to an amplifier circuit, a data transfer speed is increased.

7. 发明专利

JP2000156068A MAGNETIC DISK DEVICE 失效
公开(公告)号：JP2000156068A
公开(公告)日：2000-06-06
申请号：JP19978299
申请日：1999-07-14
申请人： HITACHI LTD
发明人： SHIMIZU ISATO , IWAKURA MASAO , NAKAMURA SHIGEO , SAKAI KAZUO , TOGASHI MORINORI , KAIHO MASAYUKI
IPC分类号： G11B33/12 , G11B25/04
摘要： PROBLEM TO BE SOLVED: To suppress the pressure fluctuation generated by inserting an arm to support a magnetic head, to reduce disk flutter and disk driving power in a magnetic disk device. SOLUTION: A space, which is open and not covered by shrouds 12a and 12b that are portions of the housing structure covering a disk side surface, is provided in the arm downstream side against the air flow that flows the surface of a disk 1 caused by the rotation of the disk 1. An air flow path 15 is provided to connect the space of an arm upstream side and a space 12 which is opened from the shroud of the arm downstream side and a linear segment is provided in the path 15 to realize a rectification effect of air flow.

8. 发明专利

JP2003096894A RAINWATER DRAINING MACHINE STATION COOPERATIVE OPERATION METHOD AND SYSTEM 审中-公开
公开(公告)号：JP2003096894A
公开(公告)日：2003-04-03
申请号：JP2001290901
申请日：2001-09-25
申请人： HITACHI LTD
发明人： MANABE AKIRA , SHIMIZU ISATO , OTANI KENJI , TAKADA KUNIO
IPC分类号： E03F1/00 , E02B1/00 , G01F1/00 , G06Q10/00 , G06Q30/04 , G06Q30/06 , G06Q50/00 , G06Q50/10 , H04Q9/00 , G06F17/60
摘要： PROBLEM TO BE SOLVED: To provide an operation support method as a business form in which an operation support center is provided and which onerously collects data required for an operation bill of a pumping machine station and bills to a user accompanied by the operation support since rainfall information is small when gathered only by a conventional rainfall radar and can not be sufficiently reflected to the operation of the pumping machine station, the operation support to the draining machine station that can cope with a case such as a local torrential downpour is desired, and a system. SOLUTION: A rain gage and data of a river water level from a rain gauge and a river water level gauge installed beforehand in the river basin are collected by using a common line, the rain gage data of a specific position in an urban area are collected by using the other exclusive data system, the rain gage or water level data from a preliminarily determined PHS are received, and a river outflow amount is predicted and calculated, and at the same time, the operation bill is offered to the draining machine station, a charge to the draining machine station for the offer of the operation bill and a value for the offer of the water level data are calculated, and payment and billing are respectively executed.

9. 发明专利

JP2002109843A MAGNETIC DISK UNIT 失效
公开(公告)号：JP2002109843A
公开(公告)日：2002-04-12
申请号：JP2000300548
申请日：2000-09-28
申请人： HITACHI LTD
发明人： ISHII EIJI , KONO TAKASHI , SHIMIZU ISATO
IPC分类号： G11B5/54 , G11B21/12 , G11B21/22
摘要： PROBLEM TO BE SOLVED: To stably drive an air latch (an aerodynamic type actuator lock) of a magnetic disk unit by efficiently guiding airflow to the air latch without disturbing airflow among disks. SOLUTION: The air latch is provided outside the magnetic disks. The tip section, which receives airflow of the air latch, is formed shorter than the outer peripheral surface of the disks. When the air latch is released, the airflow receiving section of the air latch is moved toward the direction where airflow passage is constituted for causing airflow from magnetic disk end faces and from a shroud to pass through a portion located away from the magnetic disk, and consequently the air latch can be driven stably, furthermore flutter and electric power consumption are reduced since airflow among the disk is not disturbed.

10. 发明专利

JPH11153603A AUTOMATIC BIOCHEMICAL ANALYZER 失效
公开(公告)号：JPH11153603A
公开(公告)日：1999-06-08
申请号：JP31797297
申请日：1997-11-19
申请人： HITACHI LTD
发明人： ABE YASUO , SHIMIZU ISATO , SASAKI NAOYA , MIYAKE AKIRA , TERAYAMA TAKAO
IPC分类号： G01N1/28 , G01N35/00 , G01N35/02
摘要： PROBLEM TO BE SOLVED: To provide a chemical analyzer, equipped with a thermostatic chamber having a new hot water spouting and sucking mechanism so as to make the analyzing device small-sized by eliminating a preheating part for a reagent and eliminates deterioration of the reagent by shortening the temperature fall time of a sample and shortening a measurement time. SOLUTION: The chemical analyzer is equipped with reactors 11, a sample supply means which supplies samples from the upper opening parts of the reactors 11, reagent containers wherein different kind of reagents are exclusively accumulated, a reagent supply means which sucks reagents from the reagent containers by a specific amount and supplies the reagent from the upper opening parts of the reaction containers 11, an agitating means 18 which agitates the samples and reagents in the reaction containers 11, the thermostatic chamber 22 which holds the reaction containers 11 at constant temperature, and a measuring means which measures the properties of the said samples that are reacting or having reacted. In this case, a spout hole 13 and a suction hole 16 are bored in both the side walls 15 of the thermostatic chamber 22 to induce a flow toward the gap between the reaction containers 11.

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