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21. 发明专利

JPH06285463A APPARATUS FOR DEMINERALIZATION AND METHOD FOR REGENERATING ION EXCHANGE RESIN 失效
公开(公告)号：JPH06285463A
公开(公告)日：1994-10-11
申请号：JP7598793
申请日：1993-04-01
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： OGAWA TAKEO , KOBAYASHI MASATO
IPC分类号： C02F1/42 , G21C19/307 , G21F9/12
摘要： PURPOSE:To provide an apparatus for demineralization in which reverse regeneration is prevented without installing a tank for receiving mixed resins, a high regeneration ratio is obtained by regenerating separately a cation exchange resin and an anion exchange resin. CONSTITUTION:A cation exchange resin and an anion exchange resin in a demineralization tower 1 are sent to a cation exchange resin regeneration tower 2, where back washing is conducted, and separated into a cation exchange resin layer, mixed resins layer, and an anion exchange resin layer. The anion exchange resin layer is sent to an anion exchange resin regeneration tower 3 through an anion exchange resin outlet pipe 9 to be regenerated, while the mixed resins layer 12 is sent to the demineralization tower 1 through a mixed resins extraction pipe 6 to be preserved. The cation exchange resin is regenerated in the cation exchange resin regeneration tower 2. The anion exchange resin is returned to the cation exchange resin regeneration tower 2 through an anion exchange resin returning pipe 13 and mixed with the cation exchange resin to be washed for finishing. The resin is returned to the demineralization tower where it is mixed with the mixed resins preserved.

22. 发明专利

JPS61241700A DECONTAMINATION METHOD USING FIXED-BED ELECTROLYTIC CELL 失效
公开(公告)号：JPS61241700A
公开(公告)日：1986-10-27
申请号：JP8248485
申请日：1985-04-19
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KATAOKA ICHIRO , OSUMI KATSUMI , KOBAYASHI MASATO , SAWA TOSHIO , SATO HIROFUMI
IPC分类号： G21F9/28 , C25F1/00 , C25F3/00 , G21F9/00 , G21F9/30

23. 发明专利

JPH1015364A LIQUID FILTRATION DEVICE 失效
公开(公告)号：JPH1015364A
公开(公告)日：1998-01-20
申请号：JP17204396
申请日：1996-07-02
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KAZAMA SEIICHI , KOBAYASHI MASATO , SHIOZAWA YOSHIHIRO
IPC分类号： B01D63/14 , B01D29/07 , B01D29/66 , B01D29/92 , B01D65/02 , C02F1/44
摘要： PROBLEM TO BE SOLVED: To extend the usable period of a pleat element and reduce the consumption of water when used for cleaning. SOLUTION: Inlet piping 1 is connected to the lower part of a barrel container 3 and outlet piping 2 is connected to the upper part. A water distributing pipe 11 extending from a filtrate storage tank 10 is connected to the outlet piping 2. The filtrate storage tank 10 is connected to an air tank 9 through piping 6. The piping 6 has a valve 7 and a filtrate tank diaphragm valve 5, and water piping 14 is connected to the outlet piping 2 from an area between the valve 7 and the filtrate tank diaphragm valve 5. The internal air of the air tank 9 is seat to a lid container 4 passing through the piping 14 and the outlet piping 2 by opening the valve 7 provided in the air piping 6, and also is sent to the filtrate storage tank 10 by opening the diaphragm valve 5.

24. 发明专利

JPH03117802A DESALINATION TREATMENT SYSTEM 失效
公开(公告)号：JPH03117802A
公开(公告)日：1991-05-20
申请号：JP25466989
申请日：1989-09-29
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： SHIOZAWA YOSHIHIRO , KOBAYASHI MASATO
IPC分类号： F22D11/00
摘要： PURPOSE:To maintain proper performance of the condensate desalination device all the time by controlling valve means so as to close a first pipe passage and open a second pipe passage when the temperature of the inlet water of a desalination device that is measured by a temperature sensor rises above a specified value. CONSTITUTION:A temperature sensor 41 detects the temperature of the water at the inlet of a condensate desalination device which is a mixture of the condensate and the drain from a supply water heater, and the detected temperatures are sent to a temperature switch 42. The temperature switch 42 operates when the temperature detected by the temperature sensor 41 reaches the maximum temperature of use for resin, for example 60 deg.C, and it outputs the signal of opening to a supply valve 32 and signal of closing to a supply valve 29. With the supply valve 32 open and the supply valve 29 closed, the drain of the supply water heater is recovered on the side of the outlet of a condensate desalination device 15. With high temperature of the water at the inlet of the condensate desalination device the recovery point of the drain of the supply water heater is switched from the inlet of the condensate desalination device to its outlet, and by limiting the treatment in the condensate desalination device only to the condensate, it can be prevented that the inlet water temperature of the condensate desalination device exceeds the maximum temperature of use for resin and the lowering of the performance and the decomposition of the resin in the condensate desalination device are prevented.

25. 发明专利

JPS6063400A DECONTAMINATING METHOD OF METALLIC SURFACE 失效
公开(公告)号：JPS6063400A
公开(公告)日：1985-04-11
申请号：JP17068383
申请日：1983-09-16
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： SUMIDA NOBUO , KATAOKA ICHIROU , SAITOU TAKASHI , ITOU HISAO , KOBAYASHI MASATO
IPC分类号： G21F9/28 , C25F1/00 , C25F3/00 , G21F9/00 , G21F9/30
摘要： PURPOSE:To decrease easily and efficiently the waste material to be decontaminated at a low temp. by bringing an electrolyte film into contact with the metallic surface to be decontaminated, bringing an electrode into contact with the surface of the electrolyte film and passing electric current between the metallic surface and the electrode. CONSTITUTION:An electrolyte film 2 is brought into contact with the place to be decontaminated of a metallic material 1 to be decontaminated. The film 2 consists of a high polymer material or gel mixed with a complexing agent or electrolyte, or a high polymer material which itself is an electrolyte. A metallic electrode 3 is brought into contact with the surface of such film 2 and electricity is conducted via an ammeter 5 to said electrode so as to make the material 1 positive pole and the electrode 3 negative pole. The base metallic material is then dissolved and the eluted metallic ion is captured by the complexing agent in the film 2. If the direction of the current is reversed, the oxide on the surface of the metallic material is dissolved and the eluted metallic ion is captured and fixed by the complexing agent.

26. 发明专利

JPS58224199A Removing method of oxide on metallic surface 失效
标题翻译：金属表面氧化物的去除方法
公开(公告)号：JPS58224199A
公开(公告)日：1983-12-26
申请号：JP10679582
申请日：1982-06-23
申请人： Hitachi Eng Co Ltd , Hitachi Ltd
发明人： KOBAYASHI MASATO , ITOU HISAO , SUMIDA NOBUO
IPC分类号： C25F1/04 , C25F1/00 , G21F9/28
摘要： PURPOSE: To reduce electrolytically the oxide stuck on a metallic surface and to remove efficiently said oxide by suspending conductive solid particles in a liquid system to be brought into contact with a piping or the like on the surface of which the metallic oxide is stuck, and supplying electric current thereto from the outside.
CONSTITUTION: An external power source 1 and an object 3 to be decontaminated such as a piping or the like on the surface of which metallic oxide is stuck or a counter electrode 4 for electrolysis are connected by means of an electric wire 6, and electric current is flowed between the object 3 and the electrode 4 through the electrolyte in an electrolytic cell 5 and the object 3. The metallic oxide on the surface of the object 3 is thus electrolytically reduced an is eluted in the liquid. Solid particles 7 having better conductivity than said electrolyte are suspended in the fluid system for said electrolyte. The ohmic drop by the electric resistance of the liquid is thus suppressed. Energy is economized and the electrolytic reduction and removal of the oxide on the metallic surface are accomplished efficiently.
COPYRIGHT: (C)1983,JPO&Japio
摘要翻译：目的：通过将导电固体颗粒悬浮在液体系统中以使其与金属氧化物被粘附的表面上的管道等接触来有效地减少金属表面上的氧化物并且有效地除去氧化物，并且从外部供给电流。构成：通过电线6将外部电源1和被除去金属氧化物的表面上的配管等的物体3和电解对置电极4连接起来，电流在电解池5和物体3中通过电解质在物体3和电极4之间流动。物体3的表面上的金属氧化物因此被电解而在液体中被洗脱。具有比所述电解质更好导电性的固体颗粒7悬浮在用于所述电解质的流体系统中。由此抑制液体的电阻的欧姆下降。节约能源，有效地实现金属表面氧化物的电解还原和去除。

27. 发明专利

JP2002264048A POSITIONING CONTROL DEVICE FOR TOWED MECHANISM 失效
公开(公告)号：JP2002264048A
公开(公告)日：2002-09-18
申请号：JP2001064357
申请日：2001-03-08
申请人： HITACHI LTD , OLYMPUS OPTICAL CO
发明人： KOBAYASHI MASATO , IMURA SHINYA , KAWAI TOSHIMASA
IPC分类号： B25J7/00 , A61B1/00 , B25J9/10 , B25J17/00 , G05D3/12
摘要： PROBLEM TO BE SOLVED: To allow the curve position of an operation object to follow an operation command value in an instant. SOLUTION: In applying the driving force of a motor to a pulley 18 to tow a traction wire 14 or 16 to thereby curve the tip side of a curve part 12, when the operation command value 46 is outputted by the operation of a joy stick 10, the moving quantities of the traction wires 14, 16 are detected by sensors 28, 30, and the deviation between the operation command value 46 to find a wire tip position signal 38. The deviation is feedback-controlled while performing control of advancing the phase of the operation command value by a feedforward controller 52, and the output of the feedforward controller 52 is corrected by a feedforward controller 48 to create a motor position command value 54 to find the deviation between the motor position command value 54 and a motor position signal 60. A driving signal corresponding to the deviation is created by a motor controller 64, and the driving signal is applied to the motor 20 to control the wire tip position to follow the operation command value.

28. 发明专利

JPH1194689A DISTURBANCE COMPENSATING DEVICE IN VIBRATION TESTING MACHINE 失效
公开(公告)号：JPH1194689A
公开(公告)日：1999-04-09
申请号：JP25027297
申请日：1997-09-16
申请人： HITACHI LTD
发明人： SUGAMATA YOSHIHIKO , HIRAI HIROTAKE , KOBAYASHI MASATO
IPC分类号： G01M7/02 , B06B1/02
摘要： PROBLEM TO BE SOLVED: To make it possible to estimate influence of external force on a vibration excite and a table and influence of rigidity insufficiency of a joint to be compensable by providing a compensator for estimating and compensating a disturbance in a control circuit of a vibration table. SOLUTION: Acceleration of a table 1 detected by an acceleration detector 6, and a speed signal which is given by integrating the acceleration with a feedback control device 12 comprising a displacement gate 13, an accelerometer 14, and an integrator 15 are respectively fed back to an adders 9-11 as electric signals. When a disturbance (d) is acted to the table 1, an acceleration signal detected by the acceleration detector 6 is sent to a disturbance observer 16 via the accelerometer 14. In the observer 16, a signal to offset the disturbance (d) is added to an electric signal supplied to a servo valve 4 to compensate the influence of the diturbance (d) applied to the table 1 by comparing the acceleration signal with a deviation input signal which is a difference between an exciting signal from an exciting signal generator 17 and a feedback signal, and by superposing a signal for offsetting the disturbance (d) to the adder 10.

29. 发明专利

JPH10269675A DISK STORAGE 失效
公开(公告)号：JPH10269675A
公开(公告)日：1998-10-09
申请号：JP7306297
申请日：1997-03-26
申请人： HITACHI LTD
发明人： KOBAYASHI MASATO
IPC分类号： G11B21/10 , G11B19/02 , G11B19/14
摘要： PROBLEM TO BE SOLVED: To make a control system a high band by providing an acceleration feedback controller suppressing mechanical resonance of a head support member and generating a composite position signal composing an acceleration signal with a detective position signal. SOLUTION: Sector information 29 obtained from a head 7 is converted to the detective position signal 10 by a position signal demodulation means 9. A composite position signal generation means 19 samples the acceleration signal 12 passing through an acceleration amplifier means 11, and generates the acceleration signal to fetch it into a microprocessor. The means 19 adds respective signals by an adder 18 to generate the composite position signal 20, and makes a deviation between the signal 20 and a target position signal 21 a position error signal 22 to form a control input by a position feedback controller 23. A control input signal is converted by a D/A converter 24, and passes through a resonance suppression control means 27 to position the head 7. The means 27 suppresses resonant vibration of a carriage mechanism system to constitute the acceleration feedback controller 26 with less phase delay.

30. 发明专利

JPH09161249A MAGNETIC DISK DEVICE 失效
公开(公告)号：JPH09161249A
公开(公告)日：1997-06-20
申请号：JP31887095
申请日：1995-12-07
申请人： HITACHI LTD
发明人： KOBAYASHI MASATO , YOSHIDA TAKASHI
IPC分类号： G11B5/027 , G11B5/58
摘要： PROBLEM TO BE SOLVED: To provide a magnetic disk device capable of detecting a position signal from data information and performing high speed and precise seek operation and track follow-up operation. SOLUTION: An azimuth head is a composite magnetic head provided with recording exclusive elements 2a, 2b and reproducing exclusive elements 1a, 1b. An AGC/track code recording area 8 consists of an AGC setting part 3 deciding an amplification factor of a regenerative output of a reproducing head, an erase part 4, a track code part 5 coding a track number and recording it and a mark part 6. A data information recording area 9 records the same data making an azimuth angle at an angle positive/negative different from each other on a pair of half tracks respectively. When the head traverses the data, a phase difference occurs between regenerative outputs of the reproducing elements 1a, 1b, and by combining the phase difference signal and the track number, the position signal continuous to all tracks is obtained. The head is positioned based on the position signal.

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