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61. 发明专利

JP2001107870A FEED WATER SUPPLY SYSTEM 失效
公开(公告)号：JP2001107870A
公开(公告)日：2001-04-17
申请号：JP28868699
申请日：1999-10-08
申请人： EBARA CORP
发明人： NAKAJIMA KAORU , HAMADA HIROKAZU , YAGI KAORU
IPC分类号： F04B49/00
摘要： PROBLEM TO BE SOLVED: To provide a feed water supply system in which contents of warning can be confirmed even in a type that warning is automatically restored. SOLUTION: In this feed water supply system comprising by integrally storing in a cabinet 10 pumps 11, 12 for feeding water by pressurizing water, each of piping connected to the suction and discharging sides of the casing of the pumps, a tank which is connected to the piping connected to the discharging side and accumulates water pressurized by the pumps, and an electrical control circuit for controlling the operation of the pumps, a display device 24 for displaying at least warning is arranged. Reception of a signal showing abnormal is displayed together with warning on the display device, and when the warning is automatically restored, the display remains on the display device until the warning is canceled.

62. 发明专利

JP2000179713A VALVE DEVICE 失效
公开(公告)号：JP2000179713A
公开(公告)日：2000-06-27
申请号：JP35487098
申请日：1998-12-14
申请人： EBARA CORP
发明人： YAGI KAORU
IPC分类号： F16K3/22 , F16K5/06 , F16K15/02
摘要： PROBLEM TO BE SOLVED: To reduce an arrangement space, reduce costs, and facilitate maintenance of a check valve by arranging a partition valve function and a check valve function in one valve device. SOLUTION: This device is provided with a valve box 23 in which a primary side water passage 21 and a secondary side water passage 22 are formed, and a spherical valve element 33 which is housed in the valve box 23 and in which a straight or bending water passage 34 is formed. The water passage 34 of the valve element 33 and the primary side water passage 21 and the secondary side water passage 22 of the valve box 23 are communicated with each other at a prescribed, position, the valve element 33 is rotated by nearly 90 degrees from the position, and thereby, the water passage 34 of the valve element 33 and the primary side water passage 21 and the secondary side water passage 22 of the valve box 23 are not communicated with each other. A check valve 35 is mounted in the water passage 34 of the valve element 33, and the check valve 35 is removed in a condition in which the water passage 34 of the valve element 33 and the primary side water passage 21 and the secondary side water passage 22 of the valve box 23 are not communicated with each other.

63. 发明专利

JPH10299685A FLUID MACHINE 失效
公开(公告)号：JPH10299685A
公开(公告)日：1998-11-10
申请号：JP12356097
申请日：1997-04-25
申请人： EBARA CORP
发明人： KOBAYASHI MAKOTO , YAMAMOTO MASAKAZU , MIYAKE YOSHIO , YAGI KAORU , UEI KEITA , MIYAZAKI YOSHIAKI , IIJIMA KATSUJI
IPC分类号： F04D15/00
摘要： PROBLEM TO BE SOLVED: To always and stably supply a specified flow rate irrespective of variation of piping resistance by comparing frequency and current under actual operation with a regulated program, and varying generated frequency of a frequency converter so as to make an operation point of a fluid machine approach the regulated program. SOLUTION: A frequency converter F has a controller 46 and can store the output time of its own. The frequency converter F can sense tamporally varying flow amounts to be fed by a pump during a constant flow amount controlling operation. The frequency converter F also has computation function. In addition, automatic operation can be executed by the use of memory function of the frequency converter F as follows: a specified amount of water is fed every specified periods continuously for several days, this operation is stopped for the specified several days, and is restarted. This method is effective for saving water while limiting one-day water supply amount. Automatic water supply can be performed without especially requiring auxiliary equipment.

64. 发明专利

JPH10184579A MOTOR PUMP AND GROUP OF MOTOR PUMPS 失效
公开(公告)号：JPH10184579A
公开(公告)日：1998-07-14
申请号：JP35823696
申请日：1996-12-27
申请人： EBARA CORP
发明人： KOBAYASHI MAKOTO , YAMAMOTO MASAKAZU , MIYAKE YOSHIO , YAGI KAORU , UEI KEITA , MIYAZAKI YOSHIAKI , IIJIMA KATSUJI
IPC分类号： F04D13/06 , H02K7/08
摘要： PROBLEM TO BE SOLVED: To dispense with special spaces for bearings, apply a motor pump even in the range of a great output, and expect development to use even under a high pushing pressure by mounting a suction part of an impeller toward a motor rotor side. SOLUTION: A motor pump is a canned motor pump. An inner casing 2 is housed inside an outer casing 1, and inside the inner casing 2 an impeller 4 supported by a spindle 3 is provided. A motor 6 is fixed to the outer casing 1 via a motor bracket 5. An inner casing cover 7 is attached to the upper end of the inner casing 2. Liquid introduced from a suction hole 1a formed at the outer casing 1 passes through the impeller 4 and a plurality of volutes disposed in the inner casing 2, and further, is discharged from a discharge hole 1b formed at the outer casing 1. The suction part 4a of the impeller 4 is fixed toward a motor rotor 11 side. Consequently, it is possible to provide bearings 12-15 with waste less than the conventional.

65. 发明专利

JPH09264297A CASING FOR FLUID MACHINERY 失效
公开(公告)号：JPH09264297A
公开(公告)日：1997-10-07
申请号：JP10358596
申请日：1996-03-29
申请人： EBARA CORP
发明人： KOBAYASHI MAKOTO , YAMAMOTO MASAKAZU , MIYAKE YOSHIO , YAGI KAORU , UEI KEITA , MIYAZAKI YOSHIAKI , IIJIMA KATSUJI
IPC分类号： F04D13/06 , F04D13/00 , F04D29/40 , F04D29/42
摘要： PROBLEM TO BE SOLVED: To arrange a pressure taking-out means without enlarging an outer size by detachably installing a flange on the outer peripheral part of a nozzle delivering and receiving a handling fluid together to and from a external system and installing a pressure taking-out pipe on the outer peripheral side of a nozzle. SOLUTION: A discharging nozzle 70 is fixed to a discharging casing 4 by means of melding. In the discharging flange 71, a female screw 71a is arranged on the inner end part thereof, and the female screw part 71a is screwed into the discharging nozzle 70. A penetrating screw hole 70c is formed on the discharging nozzle 70, and a penetrating hole 71b is formed on the discharging flange 71. A pressure taking-out pipe 72 is penetrated in the penetrating hole 71b, and the top end part of the pressure taking-out pipe 72 is screwed around the penetrating screw hole 70c of the discharging nozzle 70. A plug 73 is detachably installed on the pressure taking-out pipe 72. The plug 73 is taken out, a pressure gage is installed on the pressure taking-out pipe 72, and discharging pressure is measured. It is thus possible to arrange a pressure taking-out means without enlarging an outer size.

66. 发明专利

JPH09209976A FULL CIRCUMFERENTIAL FLOW TYPE PUMP 失效
公开(公告)号：JPH09209976A
公开(公告)日：1997-08-12
申请号：JP3717196
申请日：1996-01-31
申请人： EBARA CORP
发明人： KOBAYASHI MAKOTO , YAMAMOTO MASAKAZU , MIYAKE YOSHIO , ISEMOTO KOUJI , YAGI KAORU , UEI KEITA , MIYAZAKI YOSHIAKI , IIJIMA KATSUJI , KAWABATA JUNYA
IPC分类号： F04D13/14 , F04D29/52
摘要： PROBLEM TO BE SOLVED: To offset an axial thrust load, and enable usage under high push-in pressure by providing impellers on both shaft ends of a motor, and directing a suction part of all the impellers toward the motor. SOLUTION: A full circumferential flow pump is composed as a vertical type single suction multi-stage pump. A geared motor 6 is disposed at a center of a pump casing 1. Impellers 8A-8F having a suction part opened inward in an axial direction are respectively fixed on both ends of a main shaft 7 of the geared motor 6. In this constitution, fluid sucked in from a pump suction port 62a goes from a suction window 2c through a circular passage 40 and a guide member 50 to be pressure-increased by the impellers 8A-8C. Next, it is changed to an axial flow by a return blade 49 to go through a communication hole 2a, a communication tube 60, and a guide member 56a to get into the impeller 8D to be pressure-increased by the impellers 8E, 8F, and it is discharged from a discharge port 63. In this constitution, pump suction pressure only is applied to a stator can 17 in the canned motor 6, thereby usage under a high push-in pressure is enabled.

67. 发明专利

JPH09126180A ALL-AROUND FLOW TYPE PUMP 失效
公开(公告)号：JPH09126180A
公开(公告)日：1997-05-13
申请号：JP30693895
申请日：1995-10-31
申请人： EBARA CORP
发明人： KOBAYASHI MAKOTO , YAMAMOTO MASAKAZU , MIYAKE YOSHIO , ISEMOTO KOUJI , YAGI KAORU , UEI KEITA , MIYAZAKI YOSHIMASA , IIJIMA KATSUJI , KAWABATA JUNYA
IPC分类号： F04D13/06
摘要： PROBLEM TO BE SOLVED: To provide a small-sized all-around flow type pump having a small attaching area and having a high efficiency and a high productivity. SOLUTION: An all-around flow type pump comprises a motor frame outer barrel 14 provided in the outer peripheral part of a stator of a motor 6, an outer cylinder 2 defining an annular space 40 between itself and the outer peripheral surface of the motor frame outer barrel 14, a front stage impeller 8 provided at one end of a motor shaft, for leading liquid to be processed into the annular space 40, and a rear stage impeller 9 provided at the other end of the motor shaft, for extracting the liquid to be processed from the annular space 40. One 9 of the front and rear stage impellers 8, 9 is provided at its rear surface with a liner ring 51 and the other 8 thereof is not provided at its rear surface with a liner ring.

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