公开(公告)号：JP2004003476A

公开(公告)日：2004-01-08

申请号：JP2003133684

申请日：2003-05-12

Applicant: Ebara Corp ,  Ebara Densan Ltd ,  株式会社荏原製作所 ,  株式会社荏原電産

Inventor： TATEISHI KAZUFUMI ,  TAKADA TSUTOMU ,  SATO MOTOYASU

IPC: F04B49/06 ,  H02P5/74 ,  H02P27/06 ,  H02P7/63 ,  H02P7/74

Abstract: PROBLEM TO BE SOLVED: To provide a variable speed water feeding device in which one controller can execute variable speed water feeding control of a plurality of sets of pumps and the devices can be connected with a very little number of wirings. SOLUTION: The device is provided with a plurality of frequency converters 20 to make a plurality of pump motors to be a variable speed and corresponding to the pump motor one-to-one, a control unit 22 having a central processing unit 21 to execute pressure constant control or estimation terminal pressure constant control, and the controller 23 to execute various operation setting and various display of the water feeding device 29. The control unit 22 and a plurality of the frequency converters 20, and, the control unit 22 and the controller 23 respectively have a communicating means to execute transmitting/receiving of mutual information or data by a specified communication protocol. The control unit 22 and the controller 23 have a function to transmit the information or the data by a burst signal superimposed on power supply by using a power supply line 28 to supply power from the control unit 22 to the controller 23, and to separate the power supply from the burst signal when the information or the data is received. COPYRIGHT: (C)2004,JPO

公开(公告)号：JP2003235298A

公开(公告)日：2003-08-22

申请号：JP2002032701

申请日：2002-02-08

Applicant: EBARA CORP

Inventor： ANDO YOSHIHIKO ,  SATO MOTOYASU ,  SATO KENICHI

IPC: H02P23/00 ,  H02P9/00 ,  H02P9/30 ,  H02P27/05 ,  H02P7/635

Abstract: PROBLEM TO BE SOLVED: To provide a synchronous power generator for wind power generation which can always generate the power of constant frequency/voltage irrespective of the number of revolutions of a vane-wheel, without using a power conversion device which once converts the power generation output into DC and converts it into the frequency/voltage connected to a commercial frequency power system, even if the power generation frequency of the synchronous power generator for wind power generation itself is low and always fluctuates or power generation voltage itself always fluctuates. SOLUTION: The synchronous power generator is provided with a vane-wheel 1 that receives wind force and turns, a rotor 2 which is directly connected to a rotating shaft of the vane-wheel, and is provided with field windings 17 and armature windings 5 forming power generation voltage by a rotating magnetic field that the rotor forms. The frequency of voltage generated by the armature windings 5 by rotating the rotor 2 which is directly connected to the vane-wheel and the current of the frequency equivalent to the difference of the commercial frequency power system connected to the frequency are supplied to the field windings 17. COPYRIGHT: (C)2003,JPO

公开(公告)号：JPH09133079A

公开(公告)日：1997-05-20

申请号：JP31468595

申请日：1995-11-08

Applicant: EBARA CORP ,  EBARA DENSAN KK

Inventor： TATEISHI KAZUFUMI ,  TAKADA TSUTOMU ,  SATO MOTOYASU

IPC: F04B49/06

Abstract: PROBLEM TO BE SOLVED: To make variable speed feed water control of a plurality of sets of pumps by a single set of control device, and connect between these devices with a very little number of wires. SOLUTION: A control part 22 and plurality of frequency converters 20, and the control part 22 and a remote controller 23 have respective communication functions capable of performing transceiving of both information or data by a fixed protocol. Connection between the control part 22 and one set of a plurality of the frequency converters 20 and between each frequency converter 20 are made set by set successively by two communication lines 25, the control part 22 supplies power to the remote controller 23 by two power lines 26, and connection between the control part 22 and the remote controller 23 is made by two communication lines 27.

公开(公告)号：JPH08200774A

公开(公告)日：1996-08-06

申请号：JP2878995

申请日：1995-01-24

Applicant: EBARA CORP

Inventor： SONE CHUICHI ,  TATEISHI KAZUFUMI ,  KAWANISHI TAKU ,  SATO MOTOYASU ,  KIDO KOICHI

IPC: F24F11/02

Abstract: PURPOSE: To elongate electrical and mechanical life and obtain a stabilized temperature characteristic by a method wherein a valve is not opened or closed when a difference between an indoor temperature and a target temperature set value is very small or a time for opening or closing a valve is very short. CONSTITUTION: An target temperature set value, set by a target temperature setting means 27, and an indoor temperature, detected by a temperature sensor 9, are read into a set temperature inputting unit 22 and an indoor temperature inputting unit 23 respectively. When a difference, obtained in a difference deciding unit 28, is higher than a value, set by a deciding value inputting means 29, the difference is sent into a PID control unit 24 to operate while the result of operation is sent into a valve opening and closing time outputting unit 25 to determine the opening and closing time of a valve 7 and open or close the valve 7. When the difference is lower than a set value, the PID control unit 24 does not effect operation and the result of operation is not outputted whereby the opening degree of the valve 7 is kept as it is. According to this method, the electrical and mechanical life of the system can be elongated and a stabilized temperature characteristic can be obtained.

公开(公告)号：JPH08200233A

公开(公告)日：1996-08-06

申请号：JP2878895

申请日：1995-01-24

Applicant: EBARA CORP

Inventor： SONE CHUICHI ,  TATEISHI KAZUFUMI ,  KAWANISHI TAKU ,  SATO MOTOYASU ,  KIDO KOICHI

IPC: F04D15/00 ,  F04B23/00 ,  F04B49/00 ,  F04B49/10

Abstract: PURPOSE: To hold information stored over a long period with an inexpensive device, by constituting pump operation information just before so as to be written in a nonvolatile memory means when such as interrupted power supply occurs, as well as to eliminate necessity for an auxiliary power supply circuit for storing supply water pump operation information. CONSTITUTION: When a power supply is introduced, an action process is started by a control action program, to read information from a non-volatile memory element 5, and to perform initial setting for performing control action based on this information. Successively, an input process of input information from an input part 1 is performed, next to perform a control process of a supply water pump. During operation of the supply water pump, in the case of detecting power interruption in a power interruption detecting circuit 7, instantaneously operation information, alarm information, etc., are memoried in the memory element 5. Next, when the power supply is reset, action is performed at the first power supply introduced time, to call each kind of information just before power interruption stored in the memory element 5, and the supply water pump is reset to the same condition to a condition just before power interruption.

公开(公告)号：JPH07293438A

公开(公告)日：1995-11-07

申请号：JP11463694

申请日：1994-04-28

Applicant: EBARA CORP

Inventor： NOMICHI SHINJI ,  HAYAKAWA JUNICHI ,  SATO MOTOYASU

IPC: F04B49/06 ,  F04B37/08

Abstract: PURPOSE:To provide a cryopump which prevents abrupt fluctuation of a load of an expander motor, operates it in a proper state, and detects maintenance and inspection timing such as regeneration. CONSTITUTION:A cryopump has a detecting means 35 which detects operation parameters of operation passint time in the present operation cycle of the cryopump, and a memory means 53 which stores values of the operation parameters in respect to the operation passing time in the former operation cycle as managing parameters. A computing control means 51 outputs a driving command signal which controls a rotational speed of an expander immediately after of the present operation from its operation parameters, by the use of the present rotational speed, and the rotational speed of the management parameters in the operation passing time corresponding to the former operation cycle stored in the management parameters. An expander motor driving means 57 drives an expander motor based on the driving command signal.

公开(公告)号：JP2011017348A

公开(公告)日：2011-01-27

申请号：JP2010240764

申请日：2010-10-27

Applicant: Ebara Corp ,  Ebara Densan Ltd ,  株式会社荏原製作所 ,  株式会社荏原電産

Inventor： HIRAIWA HIRONAO ,  NAKAJIMA KAORU ,  KOMATSU TAKAHIDE ,  SATO MOTOYASU ,  ISHIHARA SEIICHI ,  TAMURA HIROYUKI ,  TEJIMA TOMOJI ,  NAKAHARA SATOSHI ,  HIGAKI NOBUHIRO ,  KURODA KIYOSHI

IPC: F04B23/04 ,  F04B23/00

Abstract: PROBLEM TO BE SOLVED: To provide a water feed apparatus capable of dealing with a configuration change in a flexible and inexpensive manner.SOLUTION: A water feed apparatus 1 includes: a plurality of pumps 3; a plurality of inverters 5 that variably control rotation frequency of the pumps corresponding thereto; and a control unit 6 that controls the inverters 5. Each of the inverters 5 includes: a main board 50 having a rectifier 500 that rectifies alternate current power, a power unit 501 that converts the power rectified by the rectifier 500 into alternate current power at a desired frequency, a central control unit 504 that controls the power unit 501, and a communication unit that exchanges information with the outside; and an input-output board 54 having an input terminal that inputs a signal from the outside and an output terminal that outputs a signal to the outside.

Abstract translation: 要解决的问题：提供能够以柔性和便宜的方式处理配置变化的给水设备。解决方案：给水设备1包括：多个泵3; 多个逆变器5，其可变地控制与其对应的泵的旋转频率; 以及控制逆变器5的控制单元6.每个逆变器5包括：具有整流器500的整流器的主板50，将整流器500整流的功率转换成交流电力， 期望的频率，控制功率单元501的中央控制单元504以及与外部交换信息的通信单元; 以及具有输入端子的输入输出板54，输入端子输入来自外部的信号和向外部输出信号的输出端子。

公开(公告)号：JP2004176726A

公开(公告)日：2004-06-24

申请号：JP2004009762

申请日：2004-01-16

Applicant: Ebara Corp ,  株式会社荏原製作所

Inventor： SONE CHUICHI ,  TATEISHI KAZUFUMI ,  KAWANISHI TAKU ,  SATO MOTOYASU ,  KIDO KOICHI

IPC: F04D15/00 ,  F04B49/10

Abstract: PROBLEM TO BE SOLVED: To provide a water feeding pump controller which can store and retain information for a long time without installing another auxiliary power circuit in order to store operation information of the water feeding pump in the case of a break of power due to a power failure or the like, and restores the water feeding pump to an operation condition just prior to the break of power when power is recovered.
SOLUTION: The water feeding pump controller is provided with a control means for controlling operation of the water feeding pump. The control means is provided with a nonvolatile memory element 5 which is rewritable, a means of writing the operation information of the water feeding pump in the memory element 5, and a means of reading the written operation information.
COPYRIGHT: (C)2004,JPO

公开(公告)号：JP2003199356A

公开(公告)日：2003-07-11

申请号：JP2001395300

申请日：2001-12-26

Applicant: EBARA CORP ,  EBARA DENSAN LTD

Inventor： HIGAKI NOBUHIRO ,  TAI MASA ,  SATO MOTOYASU ,  ISHIHARA SEIICHI ,  TAMURA HIROYUKI

IPC: H02M7/48

Abstract: PROBLEM TO BE SOLVED: To provide an inverter apparatus which can surely detect grounding failure of a load, without deteriorating the reliability of an inverter. SOLUTION: This inverter apparatus has an inverter 1, which converts a DC output of a DC power supply into an AC output and supplies the AC output to a load and an operational processor 2 which controls the inverter 1. A DC voltage V 1 is applied to one of the output terminals of the inverter via a series circuit of a resistor R 1 and a reverse current preventing diode D 1 . A voltage, obtained by dividing the output terminal voltage, is compared with a preset reference voltage by a comparator Q 1 , to detect the grounding of a load 3. Or a DC voltage is applied to one of the output terminals of the inverter via a resistor and a photocoupler, and by deciding whether a current applied to the photocoupler exists, the ground of the load is detected. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2001276810A

公开(公告)日：2001-10-09

申请号：JP2000096837

申请日：2000-03-31

Applicant: EBARA CORP ,  EBARA DENSAN LTD

Inventor： NARASAKI YUZO ,  KAMIYA ICHIRO ,  INOUE OSAYUKI ,  IRIE KIICHI ,  TOKUMARU TORU ,  UCHIMURA TOMOYUKI ,  SATO MOTOYASU

IPC: F04B49/00 ,  C02F1/04 ,  C02F1/14 ,  F24J2/04 ,  F24J2/44

Abstract: PROBLEM TO BE SOLVED: To provide desalting equipment which eliminates the need for providing a power source equipment having solar batteries with a battery, obviates the destruction of vacuum even in sudden clouding and rapid drop of generated electric energy, prevents the occurrence of leaking of concentrated raw water and contamination of freshwater by the sudden stoppage of a concentrated raw water discharge pump and freshwater discharge pump and further little in maintenance work. SOLUTION: The desalting equipment including a solar heat collector, an evaporation apparatus which has plural evaporators connected connected in a multiple-effect relation, a cooling column and a vacuum means is provided with the solar batteries 41 for obtaining the electric power to drive the DC and AC driven electric apparatus included in the desalting equipment, a DC transformation means 42 and a DC/AC conversion means 43 for converting the output of the DC transformation means 42 to AC. The equipment inputs the output of the solar batteries 41 to the DC voltage transformation means 42 without via the battery, supplies the output of the DC transformation means 42 to the DC driven electric apparatus and supplies the AC output of the DC/AC conversion means 43 to the AC driven electric apparatus.