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1. 发明授权

US10274010B2 Journal bearing 有权
公开(公告)号：US10274010B2
公开(公告)日：2019-04-30
申请号：US15513839
申请日：2014-12-01
申请人： Mitsubishi Electric Corporation
发明人： Koji Kawashima , Shingo Kingetsu , Taishi Hamasaki , Hidenori Nagahama
IPC分类号： F16C17/02 , F16C17/03 , F16C33/10
摘要： A journal bearing, in which a lower half carrier ring is disposed on the outer peripheral side of a horizontally installed rotating shaft, and an upstream side pad and a downstream side pad are disposed on the inner side of the lower half carrier ring, includes an upstream side oil supply portion and downstream side oil supply portion which supply lubricant oil to the upstream side pad and downstream side pad, the bearing being characterized in that the supply quantity of lubricant oil supplied from downstream side oil supply nozzles of the downstream side oil supply portion is adjusted so as to be less than the supply quantity of lubricant oil supplied from upstream side oil supply nozzles of the upstream side oil supply portion.

2. 发明申请

US20170040862A1 SEAL OIL SUPPLY DEVICE FOR DYNAMO-ELECTRIC MACHINE, AND SEAL OIL SUPPLY METHOD 审中-公开
标题翻译：密封电动机用密封装置及密封油供应方法
公开(公告)号：US20170040862A1
公开(公告)日：2017-02-09
申请号：US15303701
申请日：2014-06-05
申请人： Mitsubishi Electric Corporation
发明人： Koji Kawashima
IPC分类号： H02K5/124 , F16J15/40
CPC分类号： H02K5/124 , F16J15/40 , F16J15/406
摘要： The present invention achieves oil amount reduction and size reduction in a seal oil supply device for rotating electric machine by suppressing expansion of a rotary shaft due to its temperature increase and reducing the gap between the rotary shaft and a seal ring in normal operation. In this seal oil supply device for rotating electric machine, seal oil is supplied from a seal oil pump to a seal ring of a rotating electric machine in which hydrogen gas is sealed, via a differential pressure regulation valve for regulating a pressure of the seal oil. A first route is provided for supplying the seal oil from the seal oil pump via the differential pressure regulation valve, and in addition, a second route is provided for supplying the seal oil from the seal oil pump via a relief valve.
摘要翻译：本发明通过抑制由于其温度升高而导致的旋转轴的膨胀，并且在正常操作中减小了旋转轴和密封环之间的间隙，从而实现了用于旋转电机的密封供油装置的油量减少和尺寸减小。在这种用于旋转电机的密封供油装置中，密封油由密封油泵通过用于调节密封油的压力的压差调节阀供应到密封氢气的旋转电机的密封环。提供了通过差压调节阀从密封油泵供给密封油的第一路径，另外还提供了用于通过安全阀从密封油泵供给密封油的第二路径。

3. 发明授权

US10404138B2 Rotary electric machine having gas coolers 有权
公开(公告)号：US10404138B2
公开(公告)日：2019-09-03
申请号：US15322579
申请日：2014-11-18
申请人： MITSUBISHI ELECTRIC CORPORATION
发明人： Koji Kawashima , Shingo Kingetsu , Masahiro Kondo
IPC分类号： H02K9/06 , H02K5/20 , H02K7/14 , H02K9/18
摘要： Gas coolers one of which is housed in a gas cooler chamber provided at an upper portion of a casing and installed near an opening of the casing above each stator coil end, are provided. A gas circulation passage is formed in which a cooling gas circulates through a space A provided at an intake side of each fan→a space B surrounding the fan→the gas cooler chamber→the gas cooler→a space C including the stator coil end→a gap between a rotor and a stator and gas passages formed in the rotor and the stator→a space D between an outer periphery of the stator and the casing→the space A.

4. 发明授权

US10069370B2 Seal oil supply device for dynamo-electric machine and seal oil supply method 有权
公开(公告)号：US10069370B2
公开(公告)日：2018-09-04
申请号：US15303701
申请日：2014-06-05
申请人： Mitsubishi Electric Corporation
发明人： Koji Kawashima
IPC分类号： H02K5/124 , F16J15/40
CPC分类号： H02K5/124 , F16J15/40 , F16J15/406
摘要： The present invention achieves oil amount reduction and size reduction in a seal oil supply device for rotating electric machine by suppressing expansion of a rotary shaft due to its temperature increase and reducing the gap between the rotary shaft and a seal ring in normal operation. In this seal oil supply device for rotating electric machine, seal oil is supplied from a seal oil pump to a seal ring of a rotating electric machine in which hydrogen gas is sealed, via a differential pressure regulation valve for regulating a pressure of the seal oil. A first route is provided for supplying the seal oil from the seal oil pump via the differential pressure regulation valve, and in addition, a second route is provided for supplying the seal oil from the seal oil pump via a relief valve.

5. 发明授权

US11018549B2 Rotating electric machine having dynamic vibration absorber 有权
公开(公告)号：US11018549B2
公开(公告)日：2021-05-25
申请号：US16063354
申请日：2016-01-05
申请人： MITSUBISHI ELECTRIC CORPORATION
发明人： Koji Kawashima , Fumio Matsumoto , Takaaki Nagashima , Takuma Sasai
IPC分类号： H02K5/24 , H02K1/18
摘要： A dynamic vibration absorber needs to be designed so that the natural frequency of the dynamic vibration absorber alone becomes equal to the natural frequency of a stator. If these natural frequencies greatly deviate from each other, the effect is reduced. Therefore, the natural frequency of the dynamic vibration absorber alone needs to be accurately calculated to make designing. However, in actual, the natural frequency is greatly influenced by the rigidity around the mounting position of a vibration damping target, and thus there is a problem that the natural frequency becomes different from the designed value upon mounting. An object of the present invention is to reduce an influence on the natural frequency of the dynamic vibration absorber alone given by the rigidity around the mounting position, by mounting a plurality of dynamic vibration absorbers to a dynamic vibration absorber mounting member, thereby making the dynamic vibration absorber more effective.

6. 发明授权

US10396618B2 Rotating electric machine with shaft-seal devices having partition plate 有权
公开(公告)号：US10396618B2
公开(公告)日：2019-08-27
申请号：US14406766
申请日：2013-11-29
申请人： Mitsubishi Electric Corporation
发明人： Koji Kawashima , Shingo Kingetsu
IPC分类号： H02K5/10 , H02K5/124 , H02K5/20 , H02K9/19
摘要： In a rotating electric machine with shaft-seal devices mounted thereon, an object to provide them is to uniformize a temperature distribution of a sealing ring with a simple structure. The rotating electric machine with the shaft-seal devices mounted thereon includes a rotor having a shaft; a stator disposed in a circumferential surrounding of the rotor; a sealing ring having a plurality of through holes formed therein, being disposed in a circumferential surrounding of the shaft; a gland seal having an oil supply opening therein, for enclosing a circumferential surrounding of the sealing ring; a partition plate disposed between the sealing ring and the gland seal; and a housing on which the gland seal is fixed, for accommodating the rotor and the stator.

7. 发明授权

US11005327B2 Rotating electric machine and rotating electric machine production method 有权
公开(公告)号：US11005327B2
公开(公告)日：2021-05-11
申请号：US16070190
申请日：2016-01-26
申请人： MITSUBISHI ELECTRIC CORPORATION
发明人： Koji Kawashima , Shingo Kingetsu
IPC分类号： H02K5/00 , H02K5/124 , H02K5/15 , F16J15/44 , F16J15/40 , H02K7/18 , H02K9/14 , H02K15/14 , F01D15/10
摘要： This rotating electric machine includes: a rotor having a shaft; a stator formed around the rotor; a seal ring formed around the shaft and having a plurality of through holes; a gland seal formed so as to surround the seal ring and having an oil feed port; and a partition plate formed between the seal ring and the gland seal, wherein the partition plate is formed at a position opposed to the oil feed port and is fixed to an upper wall and a lower wall in an axial direction of the gland seal, and the partition plate has a reinforcing plate at such a position as not to obstruct the oil feed port, the reinforcing plate being fixed to a side wall of the partition plate on a gland seal side and being in close contact with a circumferential wall of the gland seal.

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