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1. 发明专利

JPH09303284A MOTOR-DRIVEN FLUID MACHINERY AND FREQUENCY CONVERTER USED FOR THE FLUID MACHINERY 失效
公开(公告)号：JPH09303284A
公开(公告)日：1997-11-25
申请号：JP13963196
申请日：1996-05-09
申请人： EBARA CORP , EBARA DENSAN KK
发明人： KOBAYASHI MAKOTO , YAMAMOTO MASAKAZU , MIYAKE YOSHIO , YAGI KAORU , UEI KEITA , MIYAZAKI YOSHIAKI , IIJIMA KATSUJI , CHIYOUJITANI HAJIME , NIHONGI NAOTOSHI , MORIZUKI HIROSHI
IPC分类号： F04D15/00 , F04D13/08
摘要： PROBLEM TO BE SOLVED: To eliminate a useless operation by storing drive modes made to contain the speed, operation time and rest time of a motor as elements, and performing operational control via the selection of one of the drive modes on the basis of the specific gravity of fluids, regarding a machine to draw a plurality of fluids having different specific gravity. SOLUTION: At the time of starting a pump, a priming plug 26 is preliminarily removed and then a barrel 1 is replenished with self-priming for storage in annular space (delivery chamber) 8. Then, the pump is started. As a result, the priming is drawn into a pump easing 11 via a self-priming circulation water suction port 23 open to the annular space 8. Also, an air-water mixture of the air at the suction side and the priming drawn from the suction port 23 is pressurized with an impeller 12, and discharged from a delivery port 24 to the delivery chamber 8. In this case, consumption torque per revolution is detected to find the specific gravity of a fluid. Furthermore, the most effective drive mode is selected depending on a fluid to be drawn, on the basis of the specific gravity. For example, a high speed rotation mode is selected at the time of drawing the air of low specific gravity, while a low speed rotation mode is selected at the time of drawing water of high specific gravity.

2. 发明专利

JPH07236280A PWM-SIGNAL GENERATOR OF PWM INVERTER 失效
公开(公告)号：JPH07236280A
公开(公告)日：1995-09-05
申请号：JP4783794
申请日：1994-02-22
申请人： EBARA DENSAN KK
发明人： NIHONGI NAOTOSHI , CHIYOUSHIYA HAJIME , WATANABE JIRO
IPC分类号： H02M7/48 , H02P27/06 , H03K7/08 , H02P7/63
摘要： PURPOSE:To realize smooth acceleration and the rotation at a constant speed with a simple circuit by switching driving signals having two different signals at the time of acceleration and at the time of a steady state and using the signals. CONSTITUTION:The pulse of an oscillator 1 is imparted to a preset counter 4, which counts down. The value of the counter is inputted into a ROM 6. PWM signal data stored in corresponding addresses are taken out and latched with a latch circuit 7. Then, the data are inputted into a driver 8. The driver 8 performs the PWM control based on the signal. At the stage of the initial period of the acceleration of a motor 9, the signal, which changes a switch 3 to the side of a frequency divider 2, is outputted from the address of the corresponding ROM 6 into a driving-signal switching signal line 16. The pulse of a low frequency is inputted into the counter 4. When the motor 9 reaches the specified speed, the driving-signal switching signal line 16 changes the switch 3 to the side of the oscillator 1 based on the output from the address of the corresponding ROM 6, and the high frequency pulse is inputted.

3. 发明专利

JPH07235783A METHOD OF FIXING POWER MODULE 失效
公开(公告)号：JPH07235783A
公开(公告)日：1995-09-05
申请号：JP4783894
申请日：1994-02-22
申请人： EBARA DENSAN KK
发明人： MORIZUKI HIROSHI , YAMATANI KYUGO , SASAKI TAKAHIKO , NIHONGI NAOTOSHI
IPC分类号： H05K7/12 , H01L23/40 , H05K7/20
摘要： PURPOSE:To provide a method of fixing a power module which enables easy removal of the power module from a heat sink after connecting the power module to a printed wiring board by fixing it to the heat sink. CONSTITUTION:This is a method of fixing a power module 2 wherein a fixing a heat sink 1 and a power module 2 are bonded and fixed by screwing. A fixing male screw 5 is inserted to a hole provided to the heat sink 1 and a hole 8 provided to the power module 2 from the side of the heat sink 1, and is screwed to a nut 4 or a female screw at the side of the power module 2 and a printed wiring board 3 to be connected to a terminal of the power module 2 is fixed to a terminal of the power module 2 by soldering.

4. 发明专利

JP2005330970A Motor drive type fluid machine, and frequency converter used in the same fluid machine 审中-公开
标题翻译：电机驱动型流体动力机，以及在同一流体动力机中使用的频率转换器
公开(公告)号：JP2005330970A
公开(公告)日：2005-12-02
申请号：JP2005202048
申请日：2005-07-11
申请人： Ebara Corp , Ebara Densan Ltd , 株式会社荏原製作所 , 株式会社荏原電産
发明人： KOBAYASHI MAKOTO , YAMAMOTO MASAKAZU , MIYAKE YOSHIO , YAGI KAORU , UEI KEITA , MIYAZAKI YOSHIAKI , IIJIMA KATSUJI , CHIYOUJIYA HAJIME , NIHONGI NAOTOSHI , MORIZUKI HIROSHI
IPC分类号： F04D15/00 , F04D13/08
摘要： PROBLEM TO BE SOLVED: To provide a fluid machine, in which effective operation can be performed in accordance with fluid to be sucked without waste, in which further compactness and light weight are achieved, in which various power sources can be applied, in which power consumption is reduced in a case where there is no fluid to be discharged, and in which resistance to overload and constraint is strong to cause less starting failure (less constraint).
SOLUTION: This fluid machine, in which fluid to be handled or fluid to be carried exists at an outer circumferential part of a motor stator, is provided with a motor frame 32 enclosing the outer circumferential part of the motor stator 31, a pump part 10 provided at one end of a motor shaft 16, a first cover 3 provided on the other end side of the motor shaft 16 to support a bearing 34, a frequency converter 36 provided on the counter-bearing side of the first cover 3, and a second cover 37 to contain the frequency converter 36 to the first cover 3.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：解决问题的方案为了提供一种流体机械，其中可以根据要被吸入的流体进行有效的操作，其中可以实现可以应用各种电源的更小的重量和更轻的重量，在没有流体排出的情况下，功率消耗降低，并且其中过载和约束的强度强，导致较少的起动故障（较少的约束）。解决方案：在该电动机定子的外周部存在要被搬运的流体或流体的流体机械设置有包围电动机定子31的外周部的电动机框架32，设置在电动机轴16的一端的泵部10，设置在电动机轴16的另一端侧以支撑轴承34的第一盖3，设置在第一盖3的反向支承侧的变频器36 以及第二盖37，以将变频器36包含在第一盖3上。（C）2006年，JPO＆NCIPI

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