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1. 发明专利

JPH08109894A VARIABLE SPEED FLOW RATE REGULATING SUBMERGED PUMP DEVICE 失效
公开(公告)号：JPH08109894A
公开(公告)日：1996-04-30
申请号：JP27291094
申请日：1994-10-12
申请人： EBARA CORP
发明人： TOKUCHI MASAICHI , SHIBATA TOMOYUKI , OGATA KIYOSHI
IPC分类号： F04D15/00 , F04D5/00 , F04D13/00
摘要： PURPOSE: To perform sufficient purification through the feed of a constant small amount of water to an aerating tank even when an amount of sludge flowing in a united purifying tank is fluctuated. CONSTITUTION: In a submerged pump device wherein a pump 11 driven by an electric motor 15 and control devices 16 and 17 controlled through the rotation speed of the pump 11 are integrally contained in a pump casing, the submerged pump has liquid level detectors 12, 13, and 14 to detect the liquid surface positions of at least three water levels and installed in a water tank and water is fed at an initial rotation speed and an increase factor by means of a level position signal for a middle water level MWL. The feed of water is stopped by means of a level position signal for a low water level LWL. Water is fed at a deceleration rotation speed during excessive inflow by means of a level position signal for a high water level HWL, and an approximately constant flow rate of water is fed at each water level.

2. 发明专利

JPH06323291A MULTISTAGE PUMP 失效
公开(公告)号：JPH06323291A
公开(公告)日：1994-11-22
申请号：JP13914793
申请日：1993-05-17
申请人： EBARA CORP
发明人： TOKUCHI MASAICHI
IPC分类号： F04D1/08 , F04D7/04 , F04D13/00 , F04D13/08 , F04D29/42 , F04D29/44 , F04D29/70
摘要： PURPOSE:To provide a submergible multistage pump capable of safely running continuously for a long time without degrading the pump performance even if a handled liquid containing foreign matters of calcium carbonate, sand, etc., is pumped up. CONSTITUTION:In a multistage pump having impellers and casings 64 receiving the impellers disposed in multiple stages, the impeller is opened in the front surface in the open form. A swirl chamber 76a is provided integrally with an open-shaped guide vane 77 in the downstream of the swirl chamber 76a in the casing 64.

3. 发明专利

JP2009228634A Underwater pump 有权
标题翻译：水下泵
公开(公告)号：JP2009228634A
公开(公告)日：2009-10-08
申请号：JP2008077959
申请日：2008-03-25
申请人： Ebara Corp , Shinmaywa Industries Ltd , 新明和工業株式会社 , 株式会社荏原製作所
发明人： ITANI RYUJI , TOKUCHI MASAICHI
IPC分类号： F04D13/08 , F04D29/44 , H02K7/14
摘要： PROBLEM TO BE SOLVED: To provide a whole circumference flow type underwater pump capable of stably discharging water even when air is sucked up together with the water at a low water level.
SOLUTION: A return section 79 is prepared on some of volute sections 72 among a plurality of volute sections 72 arranged on a pump casing 23. Thus, a part of water radially pushed outward in the pump casing 23 is radially returned inward by an impeller 21 to increase contact between the impeller 21 and the water. Thus, an idling state of the impeller 21 is avoided.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了提供即使当空气与水一起被吸入低水位时也能够稳定地排出水的全周流型水下泵。解决方案：在设置在泵壳体23上的多个蜗壳部72之间的一些涡旋部分72上准备有返回部分79.因此，在泵壳体23内向外径向推动的一部分水径向向内返回，叶轮21，以增加叶轮21和水之间的接触。因此，避免了叶轮21的怠速状态。版权所有（C）2010，JPO＆INPIT

4. 发明专利

JP2009103110A Underwater pump 有权
标题翻译：水下泵
公开(公告)号：JP2009103110A
公开(公告)日：2009-05-14
申请号：JP2007278025
申请日：2007-10-25
申请人： Ebara Corp , Shin Meiwa Ind Co Ltd , 新明和工業株式会社 , 株式会社荏原製作所
发明人： ITANI RYUJI , TOKUCHI MASAICHI
IPC分类号： F04D13/08 , F04D29/42
摘要： PROBLEM TO BE SOLVED: To prevent wear of a motor casing 31 in an entire circumferential flow type underwater pump A comprising a motor part 3 with an annular flow path 51 blocked between a motor casing 31 and an outer casing 5, a pump part 2 including a pump casing 22, and a partition wall separating the motor part 3 and the pump part 2 from each other and with at least one through port 66 for communicating an annular flow path 51 and the inside of a pump casing 22 with each other formed, and discharging fluid flowing in the annular flow path 51 through the through port 66 from the annular flow path 51 via a discharge port as an impeller 21 is driven by a motor 4. SOLUTION: This pump further includes a protection part 23b arranged along an outer circumference of a motor casing 31 near a through port 66, and preventing fluid flowing in an annular flow path 51 through the through port 66 from directly contacting the outer circumference. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了防止电动机壳体31在整个圆周流型水下泵A中的磨损，该整个圆周流型水下泵A包括电动机部分3，其中电动机壳体31和外壳5之间被阻塞的环形流路51，泵包括泵壳体22的部分2和将马达部分3和泵部分2彼此分开的分隔壁和至少一个通过端口66的连通环形流路51和泵壳体22的内部的分隔壁其它形成的，并且通过通过端口66从环形流路51经由作为叶轮21的排出口流过环形流路51的流体被电动机4驱动。解决方案：该泵还包括保护部分23b沿马达壳体31的外圆周布置在靠近通孔66处，并且防止流过环形流路51的流体通过通孔66直接接触外周。版权所有（C）2009，JPO＆INPIT

5. 发明专利

JPH09314080A MOVABLE WASHING MACHINE 失效
公开(公告)号：JPH09314080A
公开(公告)日：1997-12-09
申请号：JP16109196
申请日：1996-05-31
申请人： EBARA CORP , EBARA TECHNO SYST KK , TOKUSHU PISTON SEISAKUSHO KK
发明人： TOKUCHI MASAICHI , HARADA KATSUHIKO
IPC分类号： B08B5/02
摘要： PROBLEM TO BE SOLVED: To provide a movable washing machine in which diagnosis or disassembling.assembling is facilitated at an early stage at the time of maintenance of a pump part. SOLUTION: This washing machine is packaged by arranging a plunger pump 13 capable of generating a high pressure water by using a motor 14 as a driving source, a water receiving tank and a control panel 5, a discharge hose 10 and pipings on a base frame and mounting a wheel for moving. In this case, a slide base 12 capable of loading and unloading to an internal and external of the truck frame 1 is provided on a truck frame 1 fixing the wheel 2 and the water receiving tank, etc., and the plunger pump 13 and the motor 14 are fixed on the slide base 12.

6. 发明专利

JPH07177699A CANTILEVER BEARING TYPE MOTOR AND PUMP EMPLOYING IT 失效
公开(公告)号：JPH07177699A
公开(公告)日：1995-07-14
申请号：JP34624693
申请日：1993-12-22
申请人： EBARA CORP
发明人： KOBAYASHI MAKOTO , YAMAMOTO MASAKAZU , TOKUCHI MASAICHI , MIYAKE YOSHIO , ISEMOTO KOUJI , UEI KEITA
IPC分类号： F04D13/06 , F04D29/046 , F04D29/047 , H02K5/16
摘要： PURPOSE:To facilitate assembling by providing a coupling part for transmitting power at one end of a spindle having the other end secured with the rotor of a motor and disposing all bearings at the intermediate part between the coupling part and the rotor thereby ensuring the concentricity of bearing easily. CONSTITUTION:The motor M comprises a stator assembly 1, a rotor assembly 10, and tightening members, e.g. bolts and nuts. The stator assembly 1 comprises a cup-like motor frame 2 and a stator on the inside thereof. The rotor assembly 10 comprises a spindle 11 and a rotor supporting ring 19. The spindle 11 carries a load side bearing 13 and counter load side bearing 14 disposed on the inside of the rotor supporting ring 19 and supported rotatably. Both bearings 13, 14 are held by single bracket 17 thus forming a cantilever bearing. This structure simplifies the assembling work while enhancing the concentricity of bearing.

7. 发明专利

JPS59165891A Vortex pump 失效
标题翻译： VORTEX泵
公开(公告)号：JPS59165891A
公开(公告)日：1984-09-19
申请号：JP3821083
申请日：1983-03-10
申请人： Ebara Corp
发明人： TOKUCHI MASAICHI , KOBAYASHI MAKOTO
IPC分类号： F04D7/04 , F04D29/22
CPC分类号： F04D29/2244
摘要： PURPOSE: To improve efficiency, by a method wherein, with a wide vane increased in width, it is projected into a vortex chamber to increase the strength of an vortex flow, and this prevents the occurrence of air lock, and the direct driving function of fluid in the vortex chamber is strengthened by increasing the length of the edge part, extending at right angles to an axis, of the wide vane as in that of a narrow vane.
CONSTITUTION: With a wide vane 13b increased in a vane width Bb and projected into a vortex chamber 7, a storong vortex flow is formed, and racing is prevented from occurring, the air, staying at the upper part of a vane chamber 6, is also pulled in a vortex flow and admitted in the vortex chamber 7, and is also pulled in a main flow for exhaust, resulting in prevention of the occurrence of air lock. Further, with respect to lengths Ta and Tb of edge parts 18a and 18b, extending at right angles to an axis, of vanes, the length of the wide vane 13b is also lengthened as in that of a narrow vane 13a. As a result, the direct driving function of fluid in the vortex chamber 7 is strengthened, Q-H characteristic and efficiency are sharply improved, a vortex flow is strengthened, and a force to draw in the air is also increased, resulting in the possibility to effectively prevent the occurrence of air lock.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：为了提高效率，通过宽幅叶片宽度增加的方法，将其投射到涡流室中以增加涡流的强度，并且这防止了气锁的发生，并且直接驱动功能涡流室中的流体通过增加与窄叶片的宽叶片的宽叶片的直角相对的延伸的边缘部分的长度来加强。构成：在叶片宽度Bb上增加叶片宽度Bb并投影到涡流室7中的情况下，形成有阻挡的涡流，防止发生赛车，停留在叶片室6的上部的空气为也被涡旋流吸入，并在涡流室7中进入，并且还被吸入用于排气的主流中，从而防止气锁的发生。此外，与叶片的轴线成直角地延伸的边缘部18a，18b的长度Ta，Tb相比，宽叶片13b的长度也如同窄叶片13a的长度那样长。结果，涡流室7中的流体的直接驱动功能得到加强，QH特性和效率急剧提高，涡流增强，吸入空气的力也增加，有可能有效地防止气锁的发生。

8. 发明专利

JPH0932791A UNDERWATER PUMP 失效
公开(公告)号：JPH0932791A
公开(公告)日：1997-02-04
申请号：JP20658995
申请日：1995-07-20
申请人： EBARA CORP
发明人： FUJIWARA TETSUTARO , YAMADA SEIICHIRO , TOKUCHI MASAICHI
IPC分类号： F04D7/04 , F04D9/00 , F04D13/08 , F04D29/42 , F04D29/44
摘要： PROBLEM TO BE SOLVED: To provide an underwater pump capable of achieving light weight and low cost by forming a pump casing with a resin, maintaining the efficiency of a pump, and preventing pumping near a no-discharge operating flow rate from being deteriorated. SOLUTION: A underwater pump is provided with a pump casin 3 provided with a suction port 9, a vortex chamber 4 and a discharge chamber 5, and a motor 2 integrally attached to the pump casing 3, and for rotating and driving an impeller 6 provided on the vortex chamber 4. The pump casing 3 is constituted by connecting at least two sub casings 3a, 3b to each other, and a protrusion 11 for taking a part between the vortex chamber 4 and the discharge chamber 5 as a narrow part 12 is formed on at least one of sub casings 3a, 3b.

9. 发明专利

JPH06323289A MULTISTAGE PUMP 失效
公开(公告)号：JPH06323289A
公开(公告)日：1994-11-22
申请号：JP13914593
申请日：1993-05-17
申请人： EBARA CORP
发明人： TOKUCHI MASAICHI
IPC分类号： F04D1/08 , F04D7/04 , F04D13/00 , F04D13/08 , F04D29/42 , F04D29/44 , F04D29/70
摘要： PURPOSE:To provide a multistage pump capable of safely running continuously for a long time without degrading the pump performance even if a handled liquid containing foreign matters such as calcium carbonate or sand is pumped up. CONSTITUTION:In a multistage pump having impellers 13 and casings 16 receiving the impellers 13 disposed on multiple stages are provided in parallel swirl chambers 76a in casings 64 and open-shaped guide vanes 7 having the front surface opened to the downstream of the swirl chamber 76a. The impeller 13 is open-shaped to have the front surface opened and a main plate 74 of the impeller 13 constitutes a partition wall between the swirl chamber 76a and a return flow path 76b formed of the guide vane 77.

10. 发明专利

JPH06280783A PUMP DEVICE 失效
公开(公告)号：JPH06280783A
公开(公告)日：1994-10-04
申请号：JP9566393
申请日：1993-03-30
申请人： EBARA CORP
发明人： MURAI YUKIO , TOKUCHI MASAICHI
IPC分类号： F04D7/04 , F04D15/00 , F04D15/02 , F04D29/70
摘要： PURPOSE:To provide a small pump device which is designed to regulate a flow rate and a lift through provision of necessary pumping-up performance and prevent the occurrence of a trouble, such as wear and noise. CONSTITUTION:A pump device comprises a pump 11 having a centrifugal type impeller driven with the aid of an electric motor 14; upper and lower float switches 12 and 13 to detect a high water level HWL and a low water level LWL; a control device 15 to output a control signal based on a preset operation rotation speed for a low and a high speed, the incremental factor of the number of revolutions, and output signals from the upper and lower float switches 12 and 13; and a frequency converting device 16 to vary the operation rotation speed of the electric motor 14 by means of a control signal from the control device 15.

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