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71. 发明专利

JP2004308508A Submergible motor pump and method for operating submergible motor pump 有权
公开(公告)号：JP2004308508A
公开(公告)日：2004-11-04
申请号：JP2003101317
申请日：2003-04-04
申请人： Ebara Corp , 株式会社荏原製作所
发明人： JINNO HIDEKI , KUME SHOICHI , TAKIGAWA TORU , ABE SUGURU
IPC分类号： F04D15/00 , F04D13/08
摘要： PROBLEM TO BE SOLVED: To provide a pump suitable for preceding stand-by operation and capable of facilitating operation, maintenance, and management. SOLUTION: This submergible motor pump is provided with a motor 151 arranged in the water, an impeller 120 rotated by the motor 151 to absorb water in a water tank, and a rotation speed controller 162 for changing rotation speed of the impeller 120 in accordance with a water level in the water tank. Since it is provided with the rotation speed controller, the rotation speed of the impeller can be changed in accordance with the water level in the water tank to stabilize pump operation in accordance with the water level. COPYRIGHT: (C)2005,JPO&NCIPI

72. 发明专利

JP2004166414A Submersible motor 审中-公开
标题翻译：不可接受的电机
公开(公告)号：JP2004166414A
公开(公告)日：2004-06-10
申请号：JP2002330321
申请日：2002-11-14
申请人： Ebara Corp , 株式会社荏原製作所
发明人： KATO KENICHI , JINNO HIDEKI
IPC分类号： H02K5/132 , H02K9/22
摘要： PROBLEM TO BE SOLVED: To provide a submersible motor capable of continuous operation for an extended time without damaging a coil, of which the heat generated at the coil is efficiently released to outside through a motor casing.
SOLUTION: The submersible motor comprises a stator 11 and a rotor 12 housed in a motor casing 10. A coil 13 attached to the stator 11 is covered with an elastic body 45 which is covered with a resin 46. The resin 46 is tightly contacted to the inside surface of the motor casing 10. So the heat generated at the coil 13 is radiated outside through the elastic body 45, the resin 46, and the motor casing 10.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供能够延长时间连续运行而不损坏线圈的潜水电动机，其中线圈产生的热量通过电动机壳体有效地释放到外部。解决方案：潜水电动机包括定子11和容纳在电动机壳体10中的转子12.安装在定子11上的线圈13用覆盖有树脂46的弹性体45覆盖。树脂46是紧密接触电动机壳体10的内表面。因此，在线圈13产生的热量通过弹性体45，树脂46和电动机壳体10向外辐射。（C）2004，JPO

73. 发明专利

JP2004162591A Self-priming pump 审中-公开
公开(公告)号：JP2004162591A
公开(公告)日：2004-06-10
申请号：JP2002328806
申请日：2002-11-12
申请人： Ebara Corp , 株式会社荏原製作所
发明人： JINNO HIDEKI , YAMAZAKI SHIRO , GOTO TETSUO
IPC分类号： F04D9/02 , F04D13/16 , F04D29/46
摘要： PROBLEM TO BE SOLVED: To provide a self-priming pump shortened in air discharge time and reduced in size and weight as compared with a self-priming pump of a conventional structure by enhancing self-priming performance. SOLUTION: In this self-priming pump, a water storage space 40 for storing water at the time of stopping a pump is provided between a suction port 10a and an impeller 16. The water storage space 40 is formed into a volute shape continuously extending from the suction port 10a and gradually reducing cross-sectional area along a rotating direction of the pump, and is provided with a flow passage enlarging part 24 arranged to be inclined upward toward a discharge port 10b in the wake of a discharge volute 22 to store the impeller 16. A return flow passage 26 opening in the vicinity of a rear end of the discharge volute 22 or a part 25 of the flow passage enlarging part 24, going up after lowering up to a position below an axial center height of the pump, and opening toward the center of the impeller 16 at the axial center height position of the pump. A switching valve 42 is arranged in the return flow passage 26. COPYRIGHT: (C)2004,JPO

74. 发明专利

JP2004092532A Underwater motor pump device 审中-公开
公开(公告)号：JP2004092532A
公开(公告)日：2004-03-25
申请号：JP2002255552
申请日：2002-08-30
申请人： Ebara Corp , 株式会社荏原製作所
发明人： KATO KENICHI , JINNO HIDEKI , MIYAMOTO MASAKI
IPC分类号： F04D29/54
摘要： PROBLEM TO BE SOLVED: To provide an underwater motor pump device that can downsize and lighten the entire device, prevent a pump and a floating body from being tangled with a rope due to strong wind, be easily positioned and fixed on a water surface and be secure from an accident such as overturn.
SOLUTION: In this underwater motor pump, a water passage is formed within a floating body 17 made from a resin material, having the specific gravity smaller than that of water, a mixed flow or axial flow pump body 11 incorporating an underwater motor having a guide vane shell 13 is fixed within the water passage, an assembly 10 of the floating body 17 and the mixed or axial flow pump body 11 is floated on a water surface, and the pump body 11 takes in water around the water surface to send it to the land through a water-supply pipe. Either or both of a suction bell on the upstream of an impeller 14 of the pump body 11 and the outer casing of the shell 13 is formed on the inner surface of the body 17 and an water-supply end of the pipe is attached to the outer port of the water passage of the body 17.
COPYRIGHT: (C)2004,JPO

75. 发明专利

JP2002317795A FLOW SEPARATION CONTROL STRUCTURE FOR BLADE OF PUMP IMPELLER 失效
公开(公告)号：JP2002317795A
公开(公告)日：2002-10-31
申请号：JP2001105678
申请日：2001-04-04
申请人： EBARA CORP , KAMEMOTO TAKASHI
发明人： HONDA SHUICHIRO , JINNO HIDEKI , OKAMOTO HIDENOBU , SATO KIYONORI , KAMEMOTO TAKASHI
IPC分类号： F04D29/18
摘要： PROBLEM TO BE SOLVED: To provide the flow separation control structure for a blade of a pump impeller capable of easily preventing the generation of hydraulic pulse even if an operation flow quantity is displaced form a rated point. SOLUTION: A surface of the blade 10 of the impeller 61 is provided with a projection (or a recess) 15 for changing the moving frequency at a re-adhesion point of the flow of the fluid separated at the blade 10 when rotating the impeller 61. This projection (or the recess) 15 can change the fluid moment to be applied to the blade 10 a little to prevent the resonance of the moving frequency at the re-adhesion point of the separated flow of the fluid with a natural value of the vibration of a piping system of a pumping plant.

76. 发明专利

JP2002266792A PUMP BEARING STRUCTURE AND PUMP DEVICE 失效
公开(公告)号：JP2002266792A
公开(公告)日：2002-09-18
申请号：JP2001067118
申请日：2001-03-09
申请人： EBARA CORP
发明人： JINNO HIDEKI , KUME SHOICHI , TAKAGI MASATOSHI , SENDO TSUTOMU
IPC分类号： F04D29/046 , F04D13/00 , F04D29/04 , F16C17/14 , F16C27/06
摘要： PROBLEM TO BE SOLVED: To provide a pump bearing structure and a pump device eliminating any possibility of deviation of a bearing shell from a shock absorbing rubber, even if a load larger than a designed load is applied to a pump shaft. SOLUTION: This pump bearing structure is so formed that the cylindrical bearing shell 21 is installed in a through-hole 17 provided in the center of a bearing casing 13 via the cylindrical shock absorbing rubber 19 and a cylindrical bearing 25 rotatably supporting the pump shaft 50 is fixed to the inside of the bearing shell 21. The shock absorbing rubber 19 is vulcanized and stuck to both of the bearing casing 13 in an external circumferential side and the bearing shell 21 in an internal circumferential side.

77. 发明专利

JP2002221194A IMPELLER USING DIVIDED VANE 失效
公开(公告)号：JP2002221194A
公开(公告)日：2002-08-09
申请号：JP2001017981
申请日：2001-01-26
申请人： EBARA CORP
发明人： JINNO HIDEKI , KAMEI TAKESHI , YAMANAKA TAKASHI
IPC分类号： F04D29/34
摘要： PROBLEM TO BE SOLVED: To provide an impeller using a divided vane without entanglement of suspended matter in sewage or dirty water and without causing a trouble with rotation of the impeller. SOLUTION: This impeller 1 is furnished with a boss 10 fixed on a pump shaft and a plurality of the divided vanes 50 the hubs 61 of roots of which are fixed in the circumference of the boss 10. The hubs 61 are provided all over a root part to the boss 10 of the divided vanes 50. The boss 10 is made of an upper part boss 20 and a lower part boss 30 divided into two, and the impeller 1 is constituted by integrally fixing the upper part boss 20 and the lower part boss 30 in a state of holding the hubs 61 of the plurality of the divided vanes 50 between them.

78. 发明专利

JP2002219615A SCREW WORKING DEVICE 失效
公开(公告)号：JP2002219615A
公开(公告)日：2002-08-06
申请号：JP2001017982
申请日：2001-01-26
申请人： EBARA CORP
发明人： JINNO HIDEKI , NAGAO MASATAKA , TAJIMA TOSHIO , HONDA SHUICHIRO
IPC分类号： B23G1/16
摘要： PROBLEM TO BE SOLVED: To provide a screw working device allowing easy intrusion of mist into a screw-worked part of a mechanical part by a tap. SOLUTION: In this screw working device, a haft part 11 of the tap 10 is fixed to a chuck 20, and a screw part 13 of the tap 10 is rotated for insertion into a working part 31 of the mechanical part 30 to work the screw. Oil mist injection holes 40 for spraying oil mist toward a part of the mechanical part being worked into the screw by the tap 10 are provided at a part where the tap 10 is fixed to the chuck 20.

79. 发明专利

JP2002070127A DRAINAGE PUMP APPARATUS 失效
公开(公告)号：JP2002070127A
公开(公告)日：2002-03-08
申请号：JP2000255382
申请日：2000-08-25
申请人： EBARA CORP
发明人： JINNO HIDEKI , KUBOTA HIROYUKI , NAGAOKA KAZUHIRO , SATO KAZUYUKI
IPC分类号： E03F1/00 , E03F5/22 , F04D15/00
摘要： PROBLEM TO BE SOLVED: To provide a drainage pump apparatus in which a part of a ceiling of a pump suction passage is lowered, capable of quickly responding to a rise of water level in a suction water tank and draining by starting a pump to drain when water starts to flow into the suction water tank and the water level in the suction water tank rises so that a part of a pump impeller is submerged. SOLUTION: This drainage pump apparatus includes a pump 3, wherein when the water level in the suction water tank 1 reaches a designated water level, a part of the impeller 9 of the pump 3 is submerged and the other part is in a higher position than the suction water surface to be exposed to the air, and a lower portion of a ceiling of the suction passage of the pump 3 is lower than the suction water surface. This apparatus is provided with a water supply means for supplying water to the part exposed to the air of the impeller 9 of the pump 3, whereby when the water level in the suction water tank 1 reaches the designated water level, the pump is started with water supplied to the portion exposed to the air of the impeller 9 of the pump 3 by the water supply means.

80. 发明专利

JP2002048091A HYDRAULIC MACHINE AND ITS OPERATION METHOD 失效
公开(公告)号：JP2002048091A
公开(公告)日：2002-02-15
申请号：JP2000235974
申请日：2000-08-03
申请人： EBARA CORP
发明人： SHIROMURA KATSUNOBU , JINNO HIDEKI , KASAISHI KOHEI , INOUE HIROBUMI , KAKU SHIKETSU
IPC分类号： F04D15/00 , F04D29/02 , F04D29/04 , F04D29/66
摘要： PROBLEM TO BE SOLVED: To provide a low-cost compact hydraulic machine capable of reducing vibration in resonance below the level of an actual damage to the hydraulic machine and operable at a rotational speed over a wide range. SOLUTION: This hydraulic machine is provided with a rotary system having an impeller 3 and a shaft 2 and a supporting system having bearings 5 and 6 supporting the shaft 2 and a casing 4 housing the rotary system. The rotary system and the supporting system are formed of a material having a high damping effect. The hydraulic machine is operated at a rotational speed above a primary natural frequency of the rotary system.

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