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1. 发明专利

JPH11248212A CLEAN ROOM 失效
公开(公告)号：JPH11248212A
公开(公告)日：1999-09-14
申请号：JP5175698
申请日：1998-03-04
申请人： HITACHI LTD
发明人： KAIHO MASAYUKI , HAMAMOTO MASAHIRO
IPC分类号： F24F7/06
摘要： PROBLEM TO BE SOLVED: To uniformly control the temperature in a clean room at low costs by installing a supply port for supplying air being subjected to air-conditioning according to preset conditions in a return channel. SOLUTION: Since an air-supply vent 9 is provided at the lower part of a return channel 12, the mixing of warm return air 11 and cold supply air 10 is nearly completed while air is flowing in the return channel 12. When the mixture flows into a ceiling room 2, the temperature of the airflow is made nearly uniform and is nearly set to a setting value, thus preventing the nonuniformity of temperature from being generated in the ceiling room 2, sucking air with the same temperature by all fan filter units 4 for discharging into a clean room 1, and also making uniform the temperature in the clean room 1. In this manner, the temperature becomes uniform at a point of time when the return air flows into the ceiling room 2, generating the effect in either of small-, middle-, and large-scale clean rooms. Furthermore, the need for forming an eddy is eliminated, thus reducing the height of the ceiling room 2 and the height of the whole of the clean room for reducing costs.

2. 发明专利

JPH09158300A UNDERGROUND WATER DISCHARGE CHANNEL DEVICE 失效
公开(公告)号：JPH09158300A
公开(公告)日：1997-06-17
申请号：JP31510195
申请日：1995-12-04
申请人： HITACHI LTD
发明人： KAIHO MASAYUKI , SANGO NAOYOSHI , TAKATSU YASUSHI
IPC分类号： E03F3/00 , E03F7/00
摘要： PROBLEM TO BE SOLVED: To prevent accident at maintenance work and lessen the capacity of a main fan installed in an on-ground house by precluding formation of a methane gas layer at the top of a water discharge channel or oxygen shortage at the bottom of a pit. SOLUTION: An underground water discharge channel is equipped with a duct 6 leading from the top of the underground water discharge channel 2 to an on-ground house 4 and an auxiliary fan 5 which is connected with the duct 6, and the operation of this auxiliary fan 5 is controlled based upon the concentration of different sort gas measured by a sensing means 7 installed at the top of the underground water discharge channel 2. The duct 6 leads from the bottom of a pit 1 to the house 4 and the auxiliary fan 5 is connected with the duct 6, and the operation of the auxiliary fan 5 is controlled by the oxygen concentration measured by an oxygen concentration sensing means installed at the bottom of the pit 1.

3. 发明专利

JPH04319767A NUMERICAL ANALYSIS METHOD FOR FLOWING FIELD WITH MOVING OBJECT 失效
公开(公告)号：JPH04319767A
公开(公告)日：1992-11-10
申请号：JP8813991
申请日：1991-04-19
申请人： HITACHI LTD
发明人： KATO CHIYUKI , IKEGAWA MASAHIRO , KAIHO MASAYUKI , KO YOSHIMITSU
IPC分类号： G06F17/10
摘要： PURPOSE:To suppress the increment of calculation volume due to the movement of an object such as the analysis of aerodynaic characteristics formed around a traveling vehicle to its minimum by obtaining the mesh cell number of the other mesh to which a connection border node of one mesh system belongs from a mesh cell to which the border node concerned belongs in the preceding calculation step and its adjacent mesh cells and exchanging the information of a flow field on the border node. CONSTITUTION:In step 1, calculation parameters such as the moving speed of a circular cylinder, a calculation time and the number of calculation steps are inputted, and in step 2, the node coordinates and element data of meshes around the cylinder and the meshes of the whole flow field are inputted. In step 3, a table for referring the mesh numbers of adjacent meshes from respective inputted mesh data is formed. At new time, the mesh cell number of the other mesh to which the connection border node of one mesh belongs is retrieved based upon the mesh cell to which the border node belongs in the preceding calculation step and its adjacent mesh cells.

4. 发明专利

JPH04168337A FLOW NUMERICAL ANALYSIS OF FLUID 失效
公开(公告)号：JPH04168337A
公开(公告)日：1992-06-16
申请号：JP29204790
申请日：1990-10-31
申请人： HITACHI LTD
发明人： IKEGAWA MASAHIRO , KATO CHIYUKI , KAIHO MASAYUKI , KO YOSHIMITSU
IPC分类号： G01P13/00 , G01M9/00 , G06F17/50
摘要： PURPOSE:To achieve a shortening of calculation time with a compound analysis using a compound mesh by performing a modeling with a finite element method mesh with respect to a complicated geometry of a passage to apply a differential method for an analysis area on a field of flow. CONSTITUTION:In an analysis on a field of flow in the perimeter of a two-dimensional cylinder, first, parameters such as coefficient of kinematic viscosity, time nick, correction frequency of pressure and flow velocity, repetition frequency of time and overlapping position of a finite element method mesh 2 and a differential mesh 1 are inputted. Then, respective coordinate and element data of the mesh 2 and the mesh 1 are inputted. Then, a required calculation is performed by a repetition frequency of time inputted. Moreover, the giving and taking of connection interface data are made between the mesh 2 and the mesh 1. Here, an unknown value taken at the respective connection interfaces of the meshes 1 and 2 is given as a flow velocity component at a connection interface node and a pressure of an element having a side at the connection interface. In this manner, the field of flow near a boundary surface in a complicated shape of a passage alone is analyzed by a finite element method and the other part by a differential method thereby enabling the shortening of calculation time.

5. 发明专利

JPH0431717A ELECTROMAGNETIC FLOWMETER 失效
公开(公告)号：JPH0431717A
公开(公告)日：1992-02-03
申请号：JP13520390
申请日：1990-05-28
申请人： HITACHI LTD
发明人： KAIHO MASAYUKI , IKEGAWA MASAHIRO , FUKUNAGA MASAO , UEMATSU IKUO
IPC分类号： G01F1/58
摘要： PURPOSE:To decreases the measuring errors of flow rates caused by the difference in materials of external pipings by providing auxiliary pipings comprising magnetic material so as to cover the external piping. CONSTITUTION:The figures show the distributions of magnetic fields in the direction of the axis of a pipe in a detector, and (a) is the figure without an auxiliary piping and (b) is the figure having auxiliary piping 7a and 7b. When there is no auxiliary piping, there is the large difference between the magnetic-field distribution when an external piping is made of a nonmagnetic material and the magnetic-field distribution when the piping is made of a magnetic material. When the same flow rate has been measured, there has been the large difference in the outputted flow-rate signal values. When there are the auxiliary pipings 7a and 7b, the magnetic-field distribution does not depend on the material of the outer pipe because the auxiliary pipings are made of the magnetic material. The magnetic-field distribution becomes approximately equal to the magnetic-field distribution in the case wherein there is no auxiliary piping and the external piping is made of the magnetic material. When the same flow rate is measured, the approximately equal flow-rate signal values are outputted. The measuring errors caused by the difference in materials of the external pipings are decreased.

6. 发明专利

JP2004315201A Elevator device 审中-公开
公开(公告)号：JP2004315201A
公开(公告)日：2004-11-11
申请号：JP2003114113
申请日：2003-04-18
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HIGASHINAKASU KAZUAKI , KONDO HISASHI , HIGASHIDA YOSHIKI , SAITO MASAMITSU , KAIHO MASAYUKI
IPC分类号： B66B11/02
摘要： PROBLEM TO BE SOLVED: To provide an elevator device capable of inhibiting the vibration from an upper air straightening cover and a lower air straightening cover to a cage without increasing the weight of a car.
SOLUTION: This elevator device is provided with vibration-proof materials between the upper air straightening cover 17 and the cage 6, and between the lower air straightening cover 18 and the cage 6. Whereby the vibration from the upper air straightening cover and the lower air straightening cover to the cage can be inhibited without increasing the weight of the car.
COPYRIGHT: (C)2005,JPO&NCIPI

7. 发明专利

JP2003009445A Rotary electric machine 审中-公开
标题翻译：旋转电机
公开(公告)号：JP2003009445A
公开(公告)日：2003-01-10
申请号：JP2001183283
申请日：2001-06-18
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KIEDA SHIGEKAZU , KAIHO MASAYUKI , MORI HIDEAKI , SHIOBARA RYOICHI , HATTORI KENICHI
IPC分类号： H02K3/24 , H02K5/20 , H02K9/06
摘要： PROBLEM TO BE SOLVED: To provide a rotary electric machine capable of enhancing the cooling performance even if a velocity of a cooling wind in the direction of a shaft is large.
SOLUTION: The rotary electric machine has an iron core 1, a plurality of coils 2 attached to the iron core, a holding ring 3 for covering the outer circumferential side of a plurality of the coils and holding a plurality of coils, a centering ring 5 internally fixed at the end of the holding ring and a plurality of spacers provided between the coils and between the coil and the centering ring at the predetermined intervals, and provided with a shielding plate 20 located on the inner circumferential side of the centering ring 5 and between a plurality of the spacers and leaving the predetermined interval from the iron core 1.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：即使在轴的方向上的冷却风的速度大的情况下，也能够提供能够提高冷却性能的旋转电机。解决方案：旋转电机具有铁芯1，安装在铁芯上的多个线圈2，用于覆盖多个线圈的外周侧并保持多个线圈的保持环3，定心环5 内部固定在保持环的端部，并且以预定间隔设置在线圈之间和线圈与定心环之间的多个间隔件，并且设置有位于定心环5的内周侧上的屏蔽板20和在多个间隔件之间并且离开铁芯1离开预定间隔。

8. 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.

9. 发明专利

JPH1011421A SIMULTANEOUS LINEAR EQUATION SOLUTION FOR PARALLEL ARITHMETIC PROCESSING 失效
公开(公告)号：JPH1011421A
公开(公告)日：1998-01-16
申请号：JP15950496
申请日：1996-06-20
申请人： HITACHI LTD
发明人： TAKAHASHI KATSUNORI , IKEGAWA MASAHIRO , KATO CHIYUKI , KAIHO MASAYUKI
IPC分类号： G06F9/38 , G06F17/12
摘要： PROBLEM TO BE SOLVED: To perform an analysis of a large scale in a short calculation time by calculating every area via each relevant processor based on the coefficient matrix concerning every area and the connection boundary information on divided areas and calculating a solution of an entire analysis area. SOLUTION: A solver part 5 inputs the coefficient matrices A14 to A16 and the right side vectors b17 to b19 which are produced from the areas 1 to 3 managed by processors 1 to 3 respectively in response to the area division. The part 5 also inputs the connection boundary information 13 on the areas 1 to 3 of processors 1 to 3 which are produced when an area is divided. Then the processors 1 to 3 solve the simultaneous linear equations of their areas 1 to 3 respectively and perform the communication 20 of data with other processor 1 to 3 having the nodes of a connection boundary 12 against the value concerning these nodes. Furthermore, the part 5 carries out the communication shared by all processors against the value which is necessary for convergence of the matrix calculation. In such a processing procedure, the processors 1 to 3 output the answers x22 to x24 of their relevant area 1 to 3 respectively.

10. 发明专利

JPH08194841A METHOD FOR DIVIDING FINITE ELEMENT AREA 失效
公开(公告)号：JPH08194841A
公开(公告)日：1996-07-30
申请号：JP469895
申请日：1995-01-17
申请人： HITACHI LTD
发明人： KOBAYASHI CHIE , NISHIGAKI ICHIRO , EZAWA YOSHITAKA , SATAKE YOSHIHIRO , KAIHO MASAYUKI
IPC分类号： G06F17/50 , G06F17/13 , G06T17/00 , G06T17/20
摘要： PURPOSE: To integrate an area dividing means in an automatic mesh generating system and to highly efficiently divide a finite element model into areas by dividing an analytical model into areas to be allocated to respective processors in a superparallel computer by the use of a mapping model generated in the process of a finite element generating method. CONSTITUTION: A mapping model generating part 9 for generating an orthogonal grating in an approximate shape model for a three-dimensional(3D) model which is constituted of only orthogonal segments generated by a shape model generating part 9a sorts elements in a finite element model generated by a mesh generating part 9c based upon a mapping model into areas to be allocated to respective processors 10a in the superparallel computer 10 for distribution processing by cutting off the elements by a plane rectangular to the coordinate axes of the mapping model. Thus the area division of the shape model is executed by a rectangular parallelopiped image by the use of a mapping model obtained by dividing an approximate shape consisting of only segments parallel with orthogonal coordinate axes into a set of unit cubes more simply as compared with a case for dividing a final mesh shape into areas.

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