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1. 发明专利

JPH05292691A 失效
公开(公告)号：JPH05292691A
公开(公告)日：1993-11-05
申请号：JP9253992
申请日：1992-04-13
申请人： HITACHI LTD
发明人： MORIMOTO HIROSHI , ISHIDA ISAO , NAGURA OSAMU
IPC分类号： H02K1/30 , H02K1/32
摘要： PURPOSE:To improve the electrical and mechanical performances of a rotor, by coupling directly the rim and core of the rotor to each other via an engaging part provided between them, and by providing cooling passages in the rotor. CONSTITUTION:A rim 3 of a rotor and a core 5 of the rotor are coupled to each other by no core key, but they are coupled to each other directly by engaging a dovetail protruding part provided on the core 5 with a dovetail recessed part provided on the rim 3. Also, air ducts 9, core ducts 10, and rim ducts 11 are provided in the rotor, and the air ducts 9 and the core ducts 10 are respectively connected with the rim ducts 11. Hereupon, the core ducts 10 are so provided in the core 5 as to extend in its radial direction, and the air ducts 9 are so provided in the rim 3 as to extend in its radial direction, and further, the rim ducts 11 are so provided in the rim 3 as to extend in its laminar direction. As a result, it is possible to make the structure of the outer peripheral part of the rim 3 continuous, and the coupling part, the core 5 and a winding 7 of the rotor are cooled, and in its turn, the electrical and mechanical performances of the rotor can be improved.

2. 发明专利

JPH0480624B2 失效
公开(公告)号：JPH0480624B2
公开(公告)日：1992-12-21
申请号：JP18289283
申请日：1983-09-29
申请人： HITACHI LTD
发明人： ISHIDA ISAO
IPC分类号： H02K1/00 , F16D65/12 , H02K1/28 , H02K7/102 , H02K11/00 , H02K19/36

3. 发明专利

JPS6364544A ROTOR 失效
公开(公告)号：JPS6364544A
公开(公告)日：1988-03-23
申请号：JP20490686
申请日：1986-08-30
申请人： HITACHI LTD
发明人： ISHIDA ISAO , FURUKAWA YOSHIO , SHIRATA SHINSAKU , NAGURA OSAMU , GOTO TSUTOMU , NIWA SADAHIKO , WATABE MASATOSHI
IPC分类号： H02K3/24 , H02K3/51 , H02K9/06
摘要： PURPOSE:To prevent excessive contact surface pressure between a coil and a draft tube, by a method wherein the draft tube is made I-like form, and a non-contact portion with the draft tube is provided on the coil at center portion in radial direction. CONSTITUTION:A rotor is composed of a rotary shaft 1, a rotor core 3 provided thereon through a spider 2, an end plate 4 of the core 3, a plurality of wing pieces 5, an annular clamper 6, a coil support ring 9 fixed to a recess of a projection 7 by fitting a support member 8, a plurality of rotor coils 11, a binding wire 13 for tightening each coil 11 through an insulator 12, and the like. According to fan action of the wing pieces 5, cooling air flows in arrow direction within the draft tube 14a between the coils 11. In this case, the draft tube 14a is made I-like form, and non-contact portions 15a, 15b with the draft tube 14a are provided on the coil 11 at center portion in radial direction. Thereby thermal expansion of the non-contact portions 15a, 15b on the coil center portion is not restricted, and the excessive contact surface pressure can be prevented.

4. 发明专利

JPS6328243A CYLINDRICAL ROTOR OF ROTARY ELECTRIC MACHINE 失效
公开(公告)号：JPS6328243A
公开(公告)日：1988-02-05
申请号：JP16975586
申请日：1986-07-21
申请人： HITACHI LTD
发明人： ISHIDA ISAO , FURUKAWA YOSHIO , SHIRATA SHINSAKU
IPC分类号： H02K3/51
摘要： PURPOSE:To reduce the stress variation width due to rotation, by a method wherein a plurality of rings are shrunk to inner diameter portion of a coil carrier in the axial direction. CONSTITUTION:End portion of a rotor coil 3 is wound by a non-magnetic binding wire 6. A non-magnetic coil carrier 4 is arranged in inner circumferential portion of the rotor coil 3 through coil carrier insulation 5. A core pusher (annular ring) 8 and an inner circumferential ring (annular ring) 12 are shrunk to inner circumferential portion of the coil carrier 4 through prescribed distances at two positions in the axial direction. In this constitution, stress variation width of the coil carrier 4 due to operation (centrifugal force) can be reduced, and the fatigue strength of the coil carrier 4 can be increased.

5. 发明专利

JPS62225141A ROTOR FOR ROTARY ELECTRIC MACHINE 失效
公开(公告)号：JPS62225141A
公开(公告)日：1987-10-03
申请号：JP6722086
申请日：1986-03-27
申请人： HITACHI LTD
发明人： SHIRATA SHINSAKU , NIWA SADAHIKO , FURUKAWA YOSHIO , ISHIDA ISAO , NAGURA OSAMU
IPC分类号： H02K1/32
摘要： PURPOSE:To facilitate manufacture and transportation, by key-connecting a spider, a ring, and a rotor core respectively and removably between them. CONSTITUTION:On the outer periphery of a spider 2 fixed firmly on a rotary shaft l, a ring 3 is removably connected with a key 9. The ring 3 is the combined unit of laminating divided rings divided in the axial direction, in the axial direction via a radial ventilating duct 7 between the rings, and of tightening them with fastening screws. On the outer periphery of the ring 3, a rotor core 4 is removably connected with a key 8. The rotor core 4 is the combined unit of laminating core segments via a radial ventilating duct 6 between the cores and putting fastening end plates 10 on both the sides and fastening the segments with fastening screws, and is set so that the internal end of the radial ventilating duct 6 between the cores may be communicated with the external end of the radial ventilating duct 7 between the rings.

6. 发明专利

JPS6134565B2 失效
公开(公告)号：JPS6134565B2
公开(公告)日：1986-08-08
申请号：JP5388182
申请日：1982-04-02
申请人： HITACHI LTD
发明人： ISHIDA ISAO
IPC分类号： F16C17/04 , F03B11/06 , F16C17/06 , F16C17/22 , F16C17/24

7. 发明专利

JPS60210147A Ventilator of vertical shaft rotary electric machine 失效
标题翻译：立式旋转电机通风机
公开(公告)号：JPS60210147A
公开(公告)日：1985-10-22
申请号：JP6578484
申请日：1984-04-04
申请人： Hitachi Ltd
发明人： ISHIDA ISAO
IPC分类号： H02K9/04
CPC分类号： H02K9/04
摘要： PURPOSE:To reduce power consumption without loss of cooling effect by stopping a lower fan simultaneously with the stop of a rotor when fans are mounted at the upper and lower portions of a rotor, and stopping the upper fan after the prescribed time is elapsed. CONSTITUTION:When upper and lower fans 11, 12 are respectively provided at the upper and lower portions of a rotor 3 to ventilate and cool the rotor 3, the fan 12 is stopped near the stopping time point of the rotor 3, and the fan 11 is stopped after it is continued in operation for the prescribed time. Thus, a bracket arm and a vibrationproof stay prevent from excessively rising at the temperature, and power consumption is reduced.
摘要翻译：目的：当风扇安装在转子的上下部时，通过与转子停止同时停止下风扇，并在经过规定时间后停止上风扇，从而降低功耗。构成：当转子3的上部和下部分别设置上风扇11和下风扇12，以使转子3通风和冷却时，风扇12在转子3的停止时间点附近停止，风扇11 在规定时间内继续运行后停止。因此，支架臂和防振支架防止温度过度升高，功耗降低。

8. 发明专利

JPS60129418A THRUST BEARING DEVICE 失效
公开(公告)号：JPS60129418A
公开(公告)日：1985-07-10
申请号：JP23625683
申请日：1983-12-16
申请人： HITACHI LTD
发明人： ISHIDA ISAO
IPC分类号： F16C17/06
摘要： PURPOSE:To enhance the capability of oil-film creation, in a water turbine generator, etc., by supporting bearing shoes with their radial inclinations being reduced, so that an oil film created on the side surface of each shoe is uniform and increased. CONSTITUTION:The support point P of each bearing shoe 4, that is, the rotating center of a support member 10, is set between the inner and outer diameter R1, R2 sections of the bearing shoe 4 so that it comes to a point on the outer diameter side, B1>B2, but on the inner diameter side of the geometrical center thereof. Thus, the ratio of radial support point position BS/B which is the ratio of the diameter BS which is a difference between the diameter RS at the support point P of the bearing shoe 4 and the diameter of the inner diameter R1, and the radial length B of the bearing shoe 4, is set at a value such that the maximum thickness of an oil film between the bearing shoe 4 and a runner 3 is made large, but the highest temperature of the oil film is made low. With this arrangement, the bearing shoe 4 is supported being reduced in its radial inclination, the thickness of an oil film created on the slide surface with respect to the runner 3 is made uniform and increased, ranging from the inner diameter side M to the outer diameter side N, thereby the performance of the bearing is made satisfactory.

9. 发明专利

JPS60116915A THRUST BEARING DEVICE 失效
公开(公告)号：JPS60116915A
公开(公告)日：1985-06-24
申请号：JP22423183
申请日：1983-11-30
申请人： HITACHI LTD
发明人： ISHIDA ISAO
IPC分类号： F16C17/06
摘要： PURPOSE:To increase an ability to form an oil film on a sliding surface between a bearing shoe and a runner, by a method wherein the bearing shoe is positioned so that it can be supported through reduction of inclination in the direction of radius. CONSTITUTION:Provided a radius supported by a retainer member 10 of a bearing shoe 4 is RS, the inner radius of the bearing shoe 4 is R1, the outer radius thereof is R2, and an angle is theta, the radius R4 supported by the retainer member 10 is formed such that it is longer than (0.52R2+0.48R1) and is shorter than 4/3.(R2 -R1 )/(R2 -R1 ).180sin(theta/2)/pitheta. This causes the bearing shoe 4 to be supported at a fulcrum P where inclination in the direction of radius is reduced, and enables improvement of an ability to form an oil film on a sliding surface between the bearing shoe 4 and a runner 3.

10. 发明专利

JPS6091022A BEARING METAL OILING DEVICE 失效
公开(公告)号：JPS6091022A
公开(公告)日：1985-05-22
申请号：JP19908883
申请日：1983-10-26
申请人： HITACHI LTD
发明人： ISHIDA ISAO
IPC分类号： F16C33/00 , F16C33/10 , H02K5/167 , H02K7/08
摘要： PURPOSE:To prevent deformation of a bearing metal and thus prevent the oil film from becoming too thin, by stopping an oil pump after a certain time from detecting that the rotating machine reaches a maximum speed. CONSTITUTION:A motor 19 is directly coupled to an oil pump 14 and a switch is provided for switching the power source of the motor 19 on or off. A timer 21 is actuated by the action of contacts built in a rotational speed detector 22 provided for the rotating machine and is actuated at the maximum rotational speed of the machine. The switch 20 is switched off T5 minutes after the actuation of the timer 21 by the timer 21 set to T5 minutes and the motor 19 and the oil pump 14 are stopped. By this sequence the defomation of the bearing metal has been reduced when the oil pump 14 is stopped and the fluid lubricating film on the bearing metal itself forms a sufficient oil film for the sliding surface.

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