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81. 发明专利

JPH06220458A WASTE PLASTIC TREATMENT SYSTEM 失效
公开(公告)号：JPH06220458A
公开(公告)日：1994-08-09
申请号：JP1324993
申请日：1993-01-29
申请人： HITACHI LTD
发明人： SUGANO SHUICHI , HONCHI AKIO , YAMADA RYOKICHI , KATO AKIRA , YAMASHITA HISAO , MIYADERA HIROSHI
IPC分类号： C10G1/10
摘要： PURPOSE:To provide a waste plastic treatment system which is constituted of specific units for pyrolysis of waste plastic into an oil component and a gas component and enables a low-boiling hydrocarbon oil to be recovered with a high efficiency, by providing therefor a specific constitution. CONSTITUTION:The title system comprisies a pyrolysis oven 2 for pyrolysis of waste plastic, a catalytic reaction column 6 for increasing the low-boiling fraction content of a pyrolysis product formed in the oven 2 in the presence of a catalyst, and an oil separation unit for separating gas flowing from the column 6 into a gas component and an oil component. The first oil separation unit 3 is provided between the oven 2 and the column 6. The pyrolysis product is separated into a gas component and an oil component in the first unit 3 to introduce the gas component directly into the second oil separation unit 4 while evaporating the oil component again in a heating oven 5 and then introducing the evaporated oil component into the column 6 to increase the low-boiling fraction content. The gas flowing from the column 6 is introduced into the third oil separation unit 7.

82. 发明专利

JPH0694239A GAS TURBINE COMBUSTION DEVICE 失效
公开(公告)号：JPH0694239A
公开(公告)日：1994-04-05
申请号：JP24300492
申请日：1992-09-11
申请人： HITACHI LTD
发明人： TANIGUCHI MASAYUKI , ITO KAZUYUKI , MIYADERA HIROSHI
IPC分类号： F23R3/40
摘要： PURPOSE:To provide a gas turbine combustion device having no extinguishing of blown flame, having a low discharged concentration of NOx and showing a poor deterioration in catalyst by a method wherein mixture gas of fuel and air passed through a combustion catalyst layer flows into a dispersion combustion burner. CONSTITUTION:Catalyst combustion fuel 4 is supplied into air 1 heated by a preheating burner 11 and mixed with it. Heating air mixed with the catalyst combustion fuel 4 flows into a combustion catalyst layer 10 so as to perform a catalyst combustion. Dispersion combustion fuel 3 is supplied into gas passed through the combustion catalyst layer 10 and then dispersion combustion is carried out by an after-burner (a dispersion combustion burner) 19. A premixing combustion burner 14 ignite with combustion gas of high temperature ignited by the dispersion combustion burner 19. With such an arrangement, NOx generated from a dispersion flame is lowered and a part of the fuel is catalyst ignited, so that the flame is not completely blown extinguished.

83. 发明专利

JPH05231134A ENGINE EXHAUST EMISSION CONTROL SYSTEM 失效
公开(公告)号：JPH05231134A
公开(公告)日：1993-09-07
申请号：JP2976692
申请日：1992-02-17
申请人： HITACHI LTD
发明人： OGAWA TOSHIO , HONCHI AKIO , WATANABE NORIKO , KURODA OSAMU , YAMASHITA HISAO , MIYADERA HIROSHI , ATAGO TAKESHI
IPC分类号： F01N3/02 , F01N3/08 , F01N3/18 , F01N3/20 , F01N3/24
摘要： PURPOSE:To obtain an engine exhaust emission control system which can improve the adsorption performance of an adsorbent for adsorbing the uncombusted hydrocarbon which is exhausted by a large quantity on the engine start and permits the long period maintenance of the initial performance. CONSTITUTION:In an adsorbent chamber 3, a moisture adsorbing material is arranged at the edge parts upstream and downstream from an adsorbent for adsorbing the uncombusted hydrocarbon, and at the high temperature which is sufficient for the combustion of the carbon adhering on the adsorbent due to coaking, air is supplied into the adsorbent chamber 3 from an air feeding device 5. Accordingly, the purification rate for the hydrocarbon is improved, and the repetitive use for a long period is permitted.

84. 发明专利

JPH05141229A METHOD FOR PURIFYING EXHAUST GAS OF AUTOMOBILE ENGINE 失效
公开(公告)号：JPH05141229A
公开(公告)日：1993-06-08
申请号：JP5636891
申请日：1991-03-20
申请人： HITACHI LTD
发明人： WATANABE NORIKO , HONCHI AKIO , KURODA OSAMU , YAMASHITA HISAO , MIYADERA HIROSHI
IPC分类号： F01N3/20 , F01N3/22 , F01N3/36 , F02M33/00
摘要： PURPOSE:To purify exhaust gas of high concentration of HC discharged from the time of starting an automobile engine in a low temperature starting region reaching warming operation. CONSTITUTION:In a device for purifying exhaust gas of an automobile engine with a catalytic converter 2 set up in an exhaust passage from the engine 1, oxygen or oxygen enriched air produced in an oxygen enriched air manufacture device 3 is supplied in an exhaust gas introducing side of the catalytic converter 2 through a supply amount adjusting valve 6. Accordingly, by supplying oxygen insufficient in the exhaust gas, combustion reaction of HC is promoted. Oxygen or oxygen enriched air is used for an oxygen source to suppress increase of a space speed in an exhaust gas introducing part of a catalyser, and combustion of HC is started at a lower temperature to promote the combustion reaction.

85. 发明专利

JPH0598956A EXHAUST EMISSION CONTROL SYSTEM AND METHOD AND AUTOMOBILE WHICH USES IT 失效
公开(公告)号：JPH0598956A
公开(公告)日：1993-04-20
申请号：JP14816591
申请日：1991-05-24
申请人： HITACHI LTD
发明人： HONCHI AKIO , HAGA TETSURO , KURODA OSAMU , YAMASHITA HISAO , YUKITAKE TSUGITA , MIYADERA HIROSHI
IPC分类号： B01D53/32 , B01D53/94 , F01N3/08 , F01N3/22 , F01N3/24 , F01N3/26
摘要： PURPOSE:To purify hydrocarbon which is discharged from an engine, particularly unburned hydrocarbon which is discharged in large quantity when engine of automobile is started. CONSTITUTION:In an exhaust emission control system in which a catalyst 4 for purifying exhaust gas is provided in an exhaust passage 2 for exhaust gas which is discharged from an engine 1, a discharge device 3 is provided in the exhaust passage 2, and an air supply device 6 is provided in the upstream of the discharge device. Consequently, hydrocarbon in exhaust gas of engine is purified by corona discharge. When the exhaust gas of automobile is purified, high hydrocarbon invert ratio is obtained since the time of start of engine.

86. 发明专利

JPH0341754A COOLING APPARATUS FOR SEMICONDUCTOR 失效
公开(公告)号：JPH0341754A
公开(公告)日：1991-02-22
申请号：JP17547889
申请日：1989-07-10
申请人： HITACHI LTD
发明人： YOKOYAMA HIROSHI , MORIHARA ATSUSHI , NAGANUMA YOSHIO , OUCHI KAZUNORI , SATO YASUSHI , MIYADERA HIROSHI , ZUSHI SHIZUO
IPC分类号： H05K7/20 , H01L23/427
摘要： PURPOSE:To make it possible to cool a semiconductor quietly at low noise by using a porous heat radiating fin, feeding refrigerant to said radiating fin, evaporating the refrigerant, and using a low horse power for a cooling apparatus which is a noise source such as a fan. CONSTITUTION:A porous ceramic radiating fin 1 is constituted on a high-heat radiating LSI chip 2 on a substrate 6 so as to hold a heat conducting film 3. Refrigerant 4 for evaporation cooling is supplied through a pipe 5. The refrigerant spreads in the inside or on the surface of the ceramic radiating fin by tensile force. The heat generated from the LSI chip 2 is transferred through a heat conducting film 3. The heat is transferred to the radiating fin 1. The heat is removed by the evaporation of the refrigerant 4 which is held at the surface or the inside of the radiating fin 1. The quantity of the refrigerant which is supplied through the pipe 5 in correspondence with the quantity of the heating in the LSI chip 2 is controlled with a valve 14, and the required cooling capacity for the LSI chip 2 is secured.

87. 发明专利

JPH02138762A PACKAGE COOLING METHOD 失效
公开(公告)号：JPH02138762A
公开(公告)日：1990-05-28
申请号：JP20117689
申请日：1989-08-04
申请人： HITACHI LTD
发明人： MORIHARA ATSUSHI , NAGANUMA YOSHIO , YOKOYAMA HIROSHI , KAWAMURA KEIZO , MIYAMOTO MITSUO , SATO YASUSHI , OUCHI KAZUNORI , MIYADERA HIROSHI , KOBAYASHI FUMIYUKI , ZUSHI SHIZUO , GO HIROSHI
IPC分类号： H05K7/20 , H01L23/40
摘要： PURPOSE:To enable the efficient cooling of a semiconductor element following an inclination of the element by a method wherein not only a heat conductive element is set slidable on the semiconductor element but also the angle of a contact plane between the heat conductive element and the semiconductor element is set to have a certain value within a specified range. CONSTITUTION:Two or more semiconductor elements 10 are connected to a substrate 12 through a soldering connection 11. A heat conductive element 4 is provided in contact with the element 10. The element 4 is connected to a block 3 through an elastic piece 8 as being in contact with the block 3. The block 3 is provided in thermal contact with a cooling water unit 1. A V-shaped groove whose shape is equal to the projected shape of the element 4 is provided to the block 3. One side of the groove is a plane and brought into contact with the upside of the element 4. An angle beta that the elastic piece 8 makes with the element 10 is so defined as to satisfy a formula, alpha/2

88. 发明专利

JPH01184617A MAGNETIC RECORDING MEDIUM 失效
公开(公告)号：JPH01184617A
公开(公告)日：1989-07-24
申请号：JP252588
申请日：1988-01-11
申请人： HITACHI LTD
发明人： GOMI KENICHI , SAWAHATA SHOICHI , TAKEUCHI SEIJI , MIYADERA HIROSHI
IPC分类号： G11B5/66 , C09D171/02 , C10M105/54 , C10N40/18 , G11B5/64 , G11B5/72 , G11B5/725
摘要： PURPOSE:To extremely prolong the service life of a magnetic recording medium which is formed with a lubricating film on the surface of a protective film consisting of a material of a specific silicon carbide system composed of Si and C by changing the ratio of the Si and C, thereby imparting desired wettability to the recording medium. CONSTITUTION:After an Ni-P film 2 is formed by an electroless plating method on an Al alloy substrate 1, the surface is polished to obtain the substrate with the Ni-P film. A Cr film 3 and a magnetic film 4 of a Co-Ni system are formed by a high-frequency sputtering method using this substrate. The protective film 5 consisting of the silicon carbide compsn. expressed by the general formula SixC1-x (where 0

89. 发明专利

JPS6490070A METHOD FOR APPLYING MAGNETIC PAINT 失效
公开(公告)号：JPS6490070A
公开(公告)日：1989-04-05
申请号：JP24379387
申请日：1987-09-30
申请人： HITACHI LTD
发明人： KAJI RYUICHI , MIYADERA HIROSHI
IPC分类号： B05D7/24 , G11B5/842
摘要： PURPOSE:To optimize the dispersion of magnetic powder during coating by passing the magnetic paint through a narrow-gap passage impressed with an AC magnetic field immediately before the paint is applied. CONSTITUTION:The magnetic paint is discharged from a tank 1 by a pump 2, and forced under pressure into a filter 3. The paint is then introduced into the narrow-gap passage 4. In this case, an AC magnetic field generator 5 is provided on the passage 4, and the magnetic powder in the paint is forcedly moved by the AC magnetic field. In addition, the agglomerate of the magnetic powder in the paint is broken and dispersed. The paint is then introduced into an applicator 6, and applied on a discoid substrate as a thin film. By this method, the paint can be stably applied, and the high-content paint can be most thinly applied on the discoid substrate without deteriorating its electromagnetic characteristic.

90. 发明专利

JPS6456875A ELECTROLESS PLATING METHOD 失效
公开(公告)号：JPS6456875A
公开(公告)日：1989-03-03
申请号：JP21277987
申请日：1987-08-28
申请人： HITACHI LTD
发明人： HONCHI AKIO , GOMI KENICHI , TAKEUCHI SEIJI , SAITO YUKIO , SAWAHATA SHOICHI , TANAKA HIDEAKI , MIYADERA HIROSHI , KAMO YUICHI
IPC分类号： C23C18/16 , C23C18/31 , C23C18/36
摘要： PURPOSE:To easily control a plating bath when the surface of a substrate is electroless-plated in the plating bath contg. a metallic salt, a reducing agent and additives, by measuring the electric potential of the substrate during plating. CONSTITUTION:A substrate 4 is immersed in a plating bath 3 contg. an Ni salt, NaH2PO2 and lead and/or thiourea and the surface of the substrate 4 is electroless-plated with Ni. At this time, a Luggin tube 5 and a salt bridge 7 are used so as to form a passage to a separated plating bath 3 and a satd. calomel electrode 6 is used as a reference electrode. Air is blown as bubbles into the plating bath 3 from a pipe 9 and the bath 3 is kept at about 90 deg.C with a heater 10. The electric potential of the substrate 4 during plating is measured with an electrometer 1 and continuously recorded with a recorder 2. At the time when the electric potential changes, the concns. of the NaH2PO2, lead and thiourea in the plating bath 3 are analyzed and the compsn. of a replenisher is properly changed. Thus, the service life of the plating bath 3 is prolonged and the quality of formed plating films is made uniform.

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