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71. 发明专利

JPS5773397A Drain discharging apparatus 失效
标题翻译：排水装置
公开(公告)号：JPS5773397A
公开(公告)日：1982-05-08
申请号：JP14943480
申请日：1980-10-27
申请人： Hitachi Ltd
发明人： MIURA HARUO
IPC分类号： F28F17/00
摘要： PURPOSE: To obtain a drain discharging apparatus, excellent in the accuracy of detection and reliability, with no use of any mechanical devices, by employing such an arrangement that a drain valve is opened for discharging drain in response to an output signal of a drain detecting means when the amount of drain accumulated exceeds a prescribed value.
CONSTITUTION: Gas to be handled, introduced into a heat exchanger 1 from an inlet 1a, is cooled by cooling fluid in cooling pipes 1c and then discharged to the outside from an outlet 1b. During the above process, moisture contained in the gas is converted into drain and accumulated at the lower portion of the heat exchanger 1. When the amount of drain thus accumulated exceeds a prescribed value and a temperature sensor 6 provided at the bottom of the heat exchanger 1 is submerged in drain, a signal from the temperature sensor 6 is given to a temperature relay 7, whidth in turn functions to open a drain valve 5 for discharging drain to the outside.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：为了获得一种泄漏排放装置，通过采用这样一种布置方式，无需使用任何机械装置，检测精度和可靠性都极好，排水阀响应于漏极检测的输出信号被打开以排放排水意味着排水量超过规定值时。构成：从入口1a引入热交换器1中的被处理气体被冷却管1c中的冷却液冷却，然后从出口1b排出到外部。在上述过程中，包含在气体中的水分被转换成排水并积聚在热交换器1的下部。当这样积累的排水量超过规定值时，设置在热交换器底部的温度传感器6 1被浸没在排水管中，来自温度传感器6的信号被提供给温度继电器7，其宽度又起作用以打开用于将排水排放到外部的排水阀5。

72. 发明专利

JPS56162298A DIAPHRAGM FOR CENTRIFUGAL COMPRESSOR 失效
公开(公告)号：JPS56162298A
公开(公告)日：1981-12-14
申请号：JP6540280
申请日：1980-05-19
申请人： HITACHI LTD
发明人： MIURA HARUO
IPC分类号： F04D29/42
摘要： PURPOSE:To make it possible to increase the sectional areas of the locking parts of a return vane and enable said locking parts to be prevented from being damaged by excessive stresses, by a method wherein a diffuser diaphragm is attached to a return diaphragm by inserting the locking parts of a return vane into the dovetail grooves in the return diaphragm. CONSTITUTION:Locking parts 6a and 6b of a return vane 6 are inserted into dovetail grooves 4b and 4c formed in a return diaphragm 4. By said engagement between the dovetail grooves 4b and 4c and the locking parts 6a and 6b, a diffuser diaphragm 5 is attached to the return diaphragm 4. Thereby, it is possible to increase the sectional areas of the locking parts 6a and 6b through which the diffuser diaphragm 5 is attached to the return diaphragm 4. Moreover, because the forming positions of said locking parts 6a and 6b are in the vicinities of the front and rear edges of the return vane 6, the deformation of the diffuser diaphragm 5 on the inner diameter side can be made sufficiently small. In addition, because no excessive stresses are produced at the locking parts 6a and 6b, damage thereto can be prevented.

73. 发明专利

JPS56598A MOVING BLADE FOR MOVING BLADE VARIABLE TYPE AXIAL BLOWER 失效
公开(公告)号：JPS56598A
公开(公告)日：1981-01-07
申请号：JP7467879
申请日：1979-06-15
申请人： HITACHI LTD
发明人： MIURA HARUO , SANGO NAOYOSHI , YAMADA SAKAE
IPC分类号： F04D29/36
摘要： PURPOSE:To keep a junction less capable of breaking and also to obtain such moving blade as is light and high in screw strength by diffusing and junctioning a material higher in mechanical strength than the moving blade body to the screw of the moving blade body at a surface slanting to a moving blade shaft. CONSTITUTION:A moving blade body 1 is provided with a screw outside its cylindrical part 1b, and a moving blade shaft 2 having a flange 2a and a turn-stop 2b is clamped and coupled to its end. Then, with a conical junction provided therefor, a junction member 1c of such material as is higher in mechanical strength than the moving blade body 1 is diffused and junctioned to the screw of the cylindrical part 1b. Thus the junction is increased in area and stress is unified to decrease apprehension of breaking, and a moving blade light and high in mechanical strength is obtainable.

74. 发明专利

JPS54125510A FLANGE STRUCTURE OF HORIZONTAL PARTIAL CASING 失效
公开(公告)号：JPS54125510A
公开(公告)日：1979-09-29
申请号：JP3309178
申请日：1978-03-24
申请人： HITACHI LTD
发明人： MIURA HARUO , YOSHINAGA YOUICHI
IPC分类号： F04D29/08 , F04D29/42
摘要： PURPOSE:To prevent leakage from the joining surfaces of the partial casing without any extra tightening of a bolt by covering the thermo-contraction of a casing flange part with an initial shrinkage of a flange part. CONSTITUTION:Of upper and lower casings 1, 2 devided horizontally, the devided part of the upper casing 1 is employed with a flange part 3 and a flange upper plate 7 which is set above through a pipe-shaped reinforcement part 8 concentric with a bolt 5, and also, the devided part of a lower casing 2 is employed with a flange part 4. Under this structure, the tightening of the bolt 5 and a nut 6 causes the extension of the bolt 5 and the simultaneous shrinkage of the flange part 3 and the reinforcement part 8; the less hardness of flange parts 3, 4 than that of the casing- integrated flange increases the shrinkage of the flange parts 3, 4, which ensures transformation large enough to cover the thermo-contraction within the permissible press value of the bolt 5; thus, the thermo-contraction of the flange parts 3, 4 are convered by not only the extension of the bolt 5 but also the initial shrinkage of the flange parts 3, 4.

75. 发明专利

JP2014062504A Centrifugal fluid machine 审中-公开
标题翻译：离心流体机
公开(公告)号：JP2014062504A
公开(公告)日：2014-04-10
申请号：JP2012208420
申请日：2012-09-21
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TAKAHASHI NAOHIKO , MIURA HARUO , NARITA MITSUHIRO
IPC分类号： F04D29/10 , F04D25/16 , F04D29/08
摘要： PROBLEM TO BE SOLVED: To provide a centrifugal fluid machine capable of effectively preventing inflow of swirl flow at the upstream of a seal by suppressing the swirl flow in the seal by a high-pressure fluid injected into the seal, in a centrifugal fluid machine.SOLUTION: A centrifugal fluid machine includes a centrifugal impeller for raising a pressure of a fluid, a rotating shaft for driving the centrifugal impeller, and an annular seal for preventing the fluid of which the pressure is raised by the centrifugal impeller, from passing through a clearance gap between a rotating body and a stationary portion. An injection outlet 11 for jetting a high-pressure fluid is disposed between seal fins adjacent to each other, at the upstream side of the leak flow passing through the annular seal, and a discharge blade for discharging a part of the high-pressure fluid injected from the jetting port from an upstream side annular seal end portion, is disposed on the rotating body while positioned on the annular seal end portion.
摘要翻译：要解决的问题：提供一种离心流体机械，其能够通过在离心式流体机械中通过注入到密封件中的高压流体抑制密封件中的涡流而有效地防止在密封件的上游处的涡流的流入。解决方案：一种离心流体机械包括用于提高流体压力的离心式叶轮，用于驱动离心式叶轮的旋转轴和用于防止离心式叶轮压力升高的流体的环形密封件通过旋转体与静止部之间的间隙。用于喷射高压流体的喷射出口11设置在相邻的密封翅片之间，在通过环形密封件的泄漏流的上游侧，以及用于排出注入的高压流体的一部分的排出叶片从喷射口从上游侧环形密封端部，在位于环形密封端部上的状态下配置在旋转体上。

76. 发明专利

JP2002374700A Permanent magnet synchronous motor drive gear and washing machine using the same 审中-公开
标题翻译：永磁同步电机驱动齿轮和洗衣机
公开(公告)号：JP2002374700A
公开(公告)日：2002-12-26
申请号：JP2001180994
申请日：2001-06-15
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NOTOHARA YASUO , ENDO TSUNEHIRO , TAKAHASHI NAOHIKO , MIURA HARUO , KAWAMATA MITSUHISA
IPC分类号： D06F33/02 , D06F37/30 , H02P21/00 , H02P27/04
CPC分类号： Y02B40/52
摘要： PROBLEM TO BE SOLVED: To provide a permanent magnet synchronous motor drive gear that stably supplies electric power to a control circuit, etc., by fixing a DC voltage, by controlling the number of revolutions of a permanent magnet synchronous motor during power supply interruption, and at the same time, shortens the decelerating time of the motor by controlling the deceleration of the motor. SOLUTION: This drive gear is provided with an inverter circuit which inputs DC power, the permanent magnet synchronous motor connected to the inverter circuit, and a number-of-revolutions control circuit which controls the number of revolutions of the motor, a power supply interruption detecting circuit, which is supplied with control power from the DC power and detects the supply interruption of the DC power and a power supply interruption operating circuit which controls the number of revolutions of the motor, so that a DC voltage becomes a prescribed value, when power supply is interrupted. The drive gear secures the control power, and at the same time, continues the control of the number of revolutions of the motor, by using the power supply interruption operating circuit when power supply is interrupted, and at the same time, restores the number of revolutions of the motor, when the power supply is restored.
摘要翻译：要解决的问题：为了提供一种永久磁铁同步电机驱动齿轮，通过固定直流电压，通过在电源中断期间控制永磁同步电动机的转数，稳定地向控制电路等供电，同时通过控制电机减速来缩短电机的减速时间。解决方案：该驱动齿轮设置有输入直流电力的逆变电路，连接到逆变器电路的永磁同步电动机和控制电动机转数的转数控制电路，电源中断检测电路，从直流电源提供控制电力，并检测直流电源的供电中断;以及电源中断运行电路，其控制电动机的转数，使得直流电压变为规定值，当电源中断。驱动装置固定控制电力，同时通过在电源中断时使用电源中断操作电路来继续控制电动机的转数，并且同时恢复电动机的数量当电源恢复时，电机的转数。

77. 发明专利

JP2002206876A HEAT EXCHANGER FOR AIR COMPRESSOR 失效
公开(公告)号：JP2002206876A
公开(公告)日：2002-07-26
申请号：JP2001154768
申请日：2001-05-24
申请人： HITACHI LTD
发明人： NARUSE TOMOHIRO , HATTORI TOSHIO , TSURU SEIJI , MIURA HARUO , TAKAHASHI KAZUKI , TANIYAMA MINORU
IPC分类号： F04B39/06 , F04C18/16 , F04C29/04 , F25D1/02 , F28D9/00 , F28F9/00
摘要： PROBLEM TO BE SOLVED: To prevent the drop of heat exchange efficiency caused by the leakage between a cooler nest and a casing with simple structure in a screw compressor. SOLUTION: The heat exchanger has a low-temperature chamber 42 where cold fluid circulates and a high-temperature chamber 41 where hot fluid circulates. These low-temperature chamber and high-temperature chamber are partitioned by partition plate 45. The high-temperature chambers and the low- temperature chambers are stacked alternately. At that time, both ends in stack direction are made low-temperature chambers. Moreover, the direction of circulation of cold fluid in the low-temperature chamber and the direction of circulation of hot fluid in high-temperature chamber are crossed at roughly right angles.

78. 发明专利

JP2001045713A DYNAMO-ELECTRIC MACHINE 失效
公开(公告)号：JP2001045713A
公开(公告)日：2001-02-16
申请号：JP21792199
申请日：1999-07-30
申请人： HITACHI LTD
发明人： KAWASHIMA TAKUYA , SENOO MASAHARU , MIURA HARUO
IPC分类号： H02K1/20 , H02K5/00 , H02K9/08 , H02K9/16
摘要： PROBLEM TO BE SOLVED: To provide a cooler for a dynamo-electric machine which realizes intermediate duct structure to be obtained through simple constitution, is provided with required cooling function, and enables sufficient cost reduction. SOLUTION: A stator core, comprising laminated stator iron plates, is divided axially into a plurality of divided stator core 1a and 1b, and the divided stator cores are inserted into a cylindrical housing 7 and secured there, so that gaps are formed between them. The gaps formed between the divided stator cores 1a and 1b are used as intermediate ducts. Thus separate intermediate duct pieces can be dispensed with.

79. 发明专利

JP2000120557A SEAL DEVICE OF FLUID MACHINE 失效
公开(公告)号：JP2000120557A
公开(公告)日：2000-04-25
申请号：JP29330798
申请日：1998-10-15
申请人： HITACHI LTD
发明人： ISHII EIJI , MIURA HARUO
IPC分类号： F04D29/12 , F04B53/00
摘要： PROBLEM TO BE SOLVED: To efficiently regulate flow speed of a seal part, suppress leaking flow, and prevent self-excited vibration of a rotary shaft by changeably forming a seal part passage shape using a shape memory alloy and bimetal for a material for forming a fin part or a groove part of a seal part. SOLUTION: In a turbo machine, after passing through a space (a) a fluid passes an impeller 11, and discharged to a passage 10. A part thereof passes a clearance (b) formed on a back surface of the impeller 11, and leaks from a space (d) passing through a seal part passage 15. The seal part passage 15 is divided into several chambers by fins 17 attached on a seal ring 16, and a flow rate of the fluid leaked from the seal part passage 15 is reduced by energy loss caused by friction when the fluid passes those chambers. In this time, the fin 17 is formed of shape memory alloy or bimetal. When a fluid temperature in a seal changes, the fin 17 is deformed. It is thus possible to reduce leaking flow of the seal part, and it is also possible to prevent self-excited vibration of a rotary shaft 12.

80. 发明专利

JPH11351198A TURBO COMPRESSOR SYSTEM 失效
公开(公告)号：JPH11351198A
公开(公告)日：1999-12-21
申请号：JP29233998
申请日：1998-10-14
申请人： HITACHI LTD
发明人： NISHIDA HIDEO , MIURA HARUO , TAKAHASHI KAZUKI , FUKUSHIMA YASUO , TAKAHASHI NAOHIKO
IPC分类号： F04D27/02 , F04D29/66
摘要： PROBLEM TO BE SOLVED: To provide a turbo compressor system capable of reducing a maintenance cost while restricting noise due to blow-off during non-load operation. SOLUTION: A turbo compressor system includes turbo compressors 1a, 1b connected to a suction pipe 8 provided with a filter 35 in a suction port, a discharge pipe 10 connected to the discharge side of the final stage compressor 1b, a blow-off passage 11 having one end connected to the discharge pipe 10 and the other end connected to the suction side of the first stage compressor 1a and a blow-off valve 4 provided in the blow-off passage 11, wherein the blow-off valve 4 is open during non-load operation to guide compressed air discharged from the final stage compressor 1b via the discharge pipe 10 to the suction side of the first stage compressor 1a. A chamber 14 and a hole 15 are provided at a joint 12 between the other end of the blow-off passage 11 and the suction side of the first stage compressor 1a for using air guided via the blow-off passage 11 during non-load operation to increase the peripheral velocity component of an air flow on the suction side of the first stage compressor 1a.

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