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31. 发明专利

JP2000352399A FREQUENCY CONVERTER ASSEMBLY 失效
公开(公告)号：JP2000352399A
公开(公告)日：2000-12-19
申请号：JP16159699
申请日：1999-06-08
申请人： EBARA CORP
发明人： YAMAMOTO MASAKAZU , MIYAKE YOSHIO , KAWABATA JUNYA , UEI KEITA , IIJIMA KATSUJI
IPC分类号： F04D29/58
摘要： PROBLEM TO BE SOLVED: To save energy for fluid machine for high-temperature liquid by releasing heat from a frequency converter by natural convection that is generated at least either on an inner side or outer side of a vertically-mounted cylindrical cooling device. SOLUTION: A frequency converter assembly 12 comprises a frequency converter 10 and vertically-mounted cylindrical cooling device 11. The cooling device 11 is provided with a metal pipe 13 excellent in thermal conduction, inside which liquid 16 such as water or liquid paraffin is enclosed. An air chamber 17 for adsorbing expansion of the liquid 16 caused by temperature rise is provided between a liquid level of the liquid 16 and a lid body 15. The frequency converter 10 is mounted such that an open face of heat-releasing means 25 is adhered to a lower portion of an outer peripheral surface of the metal pipe 13. With this configuration, heat generated from the frequency converter 10 is conducted relatively fast from a surface of the metal pipe 13 to liquid 16, the liquid 16 generating natural convection. Accordingly, the heated liquid 16 with a high temperature flows upward, while the liquid 16 with a relatively low temperature flows downward.

32. 发明专利

JP2000018427A PIPING ELEMENT 失效
公开(公告)号：JP2000018427A
公开(公告)日：2000-01-18
申请号：JP20589098
申请日：1998-07-06
申请人： EBARA CORP
发明人： YAMAMOTO MASAKAZU , MIYAKE YOSHIO , KAWABATA JUNYA , UEI KEITA , MIYAZAKI YOSHIAKI , IIJIMA KATSUJI
IPC分类号： F16K37/00 , B01D35/02
摘要： PROBLEM TO BE SOLVED: To easily and correctly grasp the pressure loss to be considered in determining the optimum speed of rotation of a pump in a piping element such as a valve mounted on a piping or the like by forming the pressure measurement openings at a primary side as a fluid inlet side and a secondary side as a fluid outlet side. SOLUTION: In a case when a piping element is applied to a gate valve where a valve seat 4 is mounted on an approximately central part of a valve body 3 comprising a channel 2 inside thereof, and a valve element 5 is connected to a lower end of a valve rod 7 rotated integrally with a handle 6, the mounting flanges 11, 12 are integrally mounted on the outer peripheral surfaces of both ends of the valve body 3, and the pressure measurement openings 13, 14 are formed on the mounting flanges 11, 12. The pressure sensors or the like are respectively mounted on the pressure measuring openings 13, 14 to measure the pressure at the primary side and secondary side of the valve body 3, and the pressure loss of a gate valve 1 is correctly grasped by determining the difference therebetween. The piping resistance curve varied corresponding to the valve opening or the like can be supposed and the optimum speed of rotation of a pump can be determined, so that the energy consumption can be surely achieved.

33. 发明专利

JPH10274163A PUMP DEVICE 失效
公开(公告)号：JPH10274163A
公开(公告)日：1998-10-13
申请号：JP9458097
申请日：1997-03-28
申请人： EBARA CORP
发明人： KAWABATA JUNYA , HAMADA HIROKAZU , YAGI KAORU
IPC分类号： F04B39/14 , F04B39/12
摘要： PROBLEM TO BE SOLVED: To provide a pump device having closed structure not affected with an influence by a protrusion in the vicinity of the opening part of a cover case, coping with various piping sizes by a one part item. SOLUTION: A pump device is formed such that one or a plurality of pumps driven by an electric motor and inner pipings 14a and 14b to input and output handling fluid between the pump and an outer piping 16 are contained in a cover case 24, an opening part 28 to interconnect the inner pipings 14a and 14b and the outer piping 14b through a flange 36 is formed in the cover case 24. a cylindrical elastic member 42 to close a gap between the cover case 24 and the flange 36 is arranged in the opening part 28 of the cover case 24.

34. 发明专利

JPH09222098A PUMP CASING 失效
公开(公告)号：JPH09222098A
公开(公告)日：1997-08-26
申请号：JP8214196
申请日：1996-02-19
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： F04D13/06 , F04D29/52
摘要： PROBLEM TO BE SOLVED: To facilitate an assembly work and to provide a high-reliable pump casing. SOLUTION: A pump casing comprises an inner casing 65 to contain impellers 8A and 9A; an outer casing 1 arranged at the outer peripheral part of the inner casing 65; a seal member 75 arranged to prevent leakage of handling liquid through a gap between the inner and outer casings; and fastening members 72 and 73 to fix the inner casing 65 to fix a member, such as a motor. A seal member 75 is previously located between the inner and outer casings 65 and 1 and thereafter by functioning the fastening members 72 and 73, the seal member 75 is axially compressed and radially expanded to prevent leakage of handling liquid through a gap between the inner and outer casings 65 and 1.

35. 发明专利

JPH07224958A SUCTION CHECK VALVE 失效
公开(公告)号：JPH07224958A
公开(公告)日：1995-08-22
申请号：JP3652594
申请日：1994-02-09
申请人： EBARA CORP
发明人： KAWABATA JUNYA
IPC分类号： F16K15/14 , F04B53/10
摘要： PURPOSE:To offer a suction check valve whose valve body can be swung smoothly and hinge part strength can be sharply increased. CONSTITUTION:Regarding a check valve, which is equipped with a sheet packing part 9 made of a ring shape elastic body, and a valve element 11 continuously provided through a hinge part 10 extending inward in the radial direction from the sheet packing part 9, and which is mounted on the suction side of a self- priming type pump and prevents water droppage while the pump is stopped, the valve element 11 and the hinge part 10 are formed by providing a metal plate 13 as a core for the valve element 11, extending it to the sheet packing part 9 through the hinge part 10 and rubber molding it.

36. 发明专利

JP2003090288A DIAGNOSING SYSTEM FOR FLUID MACHINE 审中-公开
公开(公告)号：JP2003090288A
公开(公告)日：2003-03-28
申请号：JP2002204907
申请日：2002-07-12
申请人： EBARA CORP
发明人： YAMAMOTO MASAKAZU , MIYAKE YOSHIO , KAWABATA JUNYA , UEI KEITA , MIYAZAKI YOSHIAKI , IIJIMA KATSUJI , TAMAI HIROSHI
IPC分类号： F04D15/00 , F04B49/06 , F04B51/00
摘要： PROBLEM TO BE SOLVED: To provide an energy saving advance diagnosing system for a fluid machine, capable of simply making a trial calculation of energy saving amount obtained by rotational frequency adjustment utilizing an inverter (a frequency converter). SOLUTION: This diagnosing system for a fluid machine comprises a means for inputting data of a flow rate-pressure (pump head) and a flow rate-electric power consumption of a fluid machine with a motor when driven by an alternating current commercial power source, and planning requirements (a flow rate- pressure) in a facility side; a means for inputting or assuming conduit resistance (actual pump head) when the flow rate is zero; a means for computing a reducing result of the electric power consumption when rotational frequency of the fluid machine is decreased by using a frequency converter; and a processing means for indicating a computed result.

37. 发明专利

JPH11257283A PUMP UNIT 失效
公开(公告)号：JPH11257283A
公开(公告)日：1999-09-21
申请号：JP7325398
申请日：1998-03-06
申请人： EBARA CORP
发明人： KOBAYASHI MAKOTO , YAMAMOTO MASAKAZU , MIYAKE YOSHIO , KAWABATA JUNYA , UEI KEITA , MIYAZAKI YOSHIAKI , IIJIMA KATSUJI
IPC分类号： F04D29/00 , F04D13/06 , F04D29/42
摘要： PROBLEM TO BE SOLVED: To provide an effective means which can protect a pump by detecting the shut-off operation of the pump. SOLUTION: In a pump unit furnished with an outer tube 2 to form a circular flow passage 40 around a motor stator 13; a terminal 20 to feed the electric power from the outer periphery of the outer tube 2 to a stator coil; and a terminal box 45 provided to the terminal 20 on the outer surface of the outer tube 27 a thermal protector 46 is provided to the terminal box 45.

38. 发明专利

JPH11257282A FLUID MACHINE UNIT GROUP WITH FREQUENCY CONVERTER 失效
公开(公告)号：JPH11257282A
公开(公告)日：1999-09-21
申请号：JP7136798
申请日：1998-03-05
申请人： EBARA CORP
发明人： KOBAYASHI MAKOTO , YAMAMOTO MASAKAZU , MIYAKE YOSHIO , KAWABATA JUNYA , UEI KEITA , MIYAZAKI YOSHIAKI , IIJIMA KATSUJI
IPC分类号： F04D29/00 , F04D13/06 , F04D29/42
摘要： PROBLEM TO BE SOLVED: To manufacture a fluid machine such as a pump with a reasonable cost and different functions rationally, to unspecified plural users and various sorts of purposes. SOLUTION: To a fluid machine unit group in which a fluid machine to generate a pressure by rotating an impeller 8 driven by a motor, and a frequency converter assembly body 50 to feed the electric power to the motor, are integrally composed, the frequency converter assembly body 50 is divided in a base 46 installed to the unit side, and a cover 47 installed to the base 46, a plurality of sorts of the covers are prepared, and it is composed to make the function and the performance different by converting the cover.

39. 发明专利

JPH11230100A NOISE-PROOF COVER FOR CIRCUMFERENTIAL FLOW-TYPE PUMP 失效
公开(公告)号：JPH11230100A
公开(公告)日：1999-08-24
申请号：JP4629498
申请日：1998-02-12
申请人： EBARA CORP
发明人： KOBAYASHI MAKOTO , YAMAMOTO MASAKAZU , MIYAKE YOSHIO , KAWABATA JUNYA , UEI KEITA , MIYAZAKI YOSHIAKI , IIJIMA KATSUJI
IPC分类号： F04D13/06 , F04D29/66
摘要： PROBLEM TO BE SOLVED: To enable parts to be used in common without deteriorating the noise reducing effect. SOLUTION: A noise-proof cover for a circumferential flow-type pump, in which an annular passage through which pump handling liquid is allowed to flow is provided on the outer periphery of a motor, is provided with a first side plate part 1 provided with a cutout 1n facing a suction pipe connecting part 101 of a circumferential-type pump 100, a second side plate part 2 provided on the side opposite to the first side plate part 1 across the pump, a third side plate part 3 and a fourth side plate part 4 connected to the first side plate part 1 and the second side plate part 2 and for covering the side surfaces, and a ceiling part 5 for covering the upper part of the pump 100.

40. 发明专利

JPH11230082A FLUID MACHINE UNIT 失效
公开(公告)号：JPH11230082A
公开(公告)日：1999-08-24
申请号：JP4286898
申请日：1998-02-09
申请人： EBARA CORP
发明人： KOBAYASHI MAKOTO , YAMAMOTO MASAKAZU , MIYAKE YOSHIO , KAWABATA JUNYA , UEI KEITA , MIYAZAKI YOSHIAKI , IIJIMA KATSUJI
IPC分类号： F04D15/00 , F04D29/66
摘要： PROBLEM TO BE SOLVED: To suppress the exciting force applied to a foundation by rotating a motor at the specific revolving speed or above with a frequency converter feeding electric power to the motor, and fitting a vibration-proof material to an installation section. SOLUTION: A frequency converter assembly 77 incorporating a frequency converter is fixed to the outside of an outer tube 2, and power feed wiring is arranged from the frequency converter to a stator 13 via a terminal case 20. The revolving speed of a canned motor 6 is set to 3600 rpm or above by the frequency converter. A flange 54 with legs 54a integrally formed with the installation legs 54a for erecting a pump is fixed to an installation floor G via a vibration-proof material 60 made of an elastic body such as rubber. This fluid machine unit can be operated at a high speed and miniaturized by utilizing the frequency converter, and the exciting force applied to a foundation can be sufficiently reduced by using the simple vibration-proof material 60 made of the elastic body such as rubber.

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