公开(公告)号：US11448234B2

公开(公告)日：2022-09-20

申请号：US17238856

申请日：2021-04-23

Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

Inventor： Yohei Takase ,  Yoshiyuki Nakane ,  Satoru Mitsuda ,  Hiroaki Kato ,  Ryosuke Fukuyama ,  Daisuke Watanabe ,  Kaho Takeuchi

IPC: F04D17/10 ,  F04D29/42 ,  F04D29/043 ,  F04D29/10 ,  F04D29/22 ,  F04D13/06 ,  F04D29/063 ,  F04D29/08 ,  F04D25/02 ,  F04D25/06

Abstract: First and second pressure relief passages extend from an oil pan in a branching manner, and merge with each other to form a merging portion. A pressure relief hole is arranged above the merging portion, and a first pressure relief passage is arranged below the merging portion. The minimum cross-sectional area of the second pressure relief passage is smaller than the minimum cross-sectional area of the first pressure relief passage. The second pressure relief passage includes a bent portion formed by bending the second pressure relief passage. The bent portion is configured to perform gas/liquid separation by crushing bubbles. When reaching the merging portion from the bent portion, oil is returned to the oil pan via the first pressure relief passage. When reaching the merging portion from the bent portion, gas is discharged to the outside of the housing via the pressure relief hole.

公开(公告)号：US20140210293A1

公开(公告)日：2014-07-31

申请号：US14156667

申请日：2014-01-16

Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

Inventor： Masanao Kagami ,  Yoshiyuki Nakane ,  Satoru Mitsuda ,  Noriyuki Suzuki

IPC: H02K1/27

CPC classification number: H02K1/2766 ,  H02K29/03 ,  H02K2213/03

Abstract: A permanent magnet embedded type rotating electrical machine includes a rotor includes a rotor core formed by a plurality of laminated magnetic steel plates and a plurality of permanent magnets and a stator. Each magnetic steel plate has a plurality of pairs of magnet holes, pairs of joining portions and peninsula portions. The magnet holes of each pair are disposed at positions adjacent to an outer periphery of the magnetic steel plate so as to form a V-shape that is divergent toward the outer periphery. The joining portion is configured to connect the magnet hole with a circumference of the peninsula portion. A distance between a center of the rotor core and at least one of a pair of ends of the circumference of the peninsula portion is smaller than a distance between the center and an intersection of a d-axis of the rotor and the circumference.

Abstract translation: 一种永磁体嵌入式旋转电机，包括：转子，其包括由多个层压的电磁钢板和多个永磁体和定子形成的转子芯。 每个磁钢板具有多对磁体孔，一对接合部分和半岛部分。 每对的磁体孔设置在与电磁钢板的外周相邻的位置处，以形成向外周发散的V形。 接合部构造为将磁体孔与半岛部的周缘连接。 转子芯体的中心与半岛部分的圆周的一对端部中的至少一个之间的距离小于中心与转子的d轴与圆周的交点之间的距离。

公开(公告)号：US10291088B2

公开(公告)日：2019-05-14

申请号：US15435380

申请日：2017-02-17

Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

Inventor： Noriyuki Suzuki ,  Yoshiyuki Nakane

IPC: H02K1/27 ,  H02K7/14 ,  H02K21/16 ,  H02K29/03

Abstract: A permanent magnet type rotating electric machine includes a stator, a rotor core including magnet insertion holes, and permanent magnets inserted into the magnet insertion holes and fixed to the rotor core. The permanent magnets include N-pole magnets and S-pole magnets. The N-pole magnets are arranged adjacent to each other in a circumferential direction and form a first set. The S-pole magnets are arranged adjacent to each other in the circumferential direction and form a second set. The first set and the second set are arranged along the same circumference. The rotor core includes an outer circumferential portion that includes a groove at a location corresponding to a position between the N-pole magnets and a groove at a location corresponding to a position between the S-pole magnets.

公开(公告)号：US11542953B2

公开(公告)日：2023-01-03

申请号：US17374251

申请日：2021-07-13

Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

Inventor： Ryo Umeyama ,  Yoshiyuki Nakane

IPC: F04D29/28 ,  F04D29/043 ,  F04D17/10 ,  F04D29/30

Abstract: A centrifugal compressor comprises an impeller including a hub and a plurality of blades. The hub is provided with a through hole. The hub has an external radial surface having an inner external radial surface and an outer external radial surface. The outer external radial surface is formed closer to a back surface than an imaginary curved surface having as a radius a radius of curvature of the inner external radial surface at a radially outer edge thereof.

公开(公告)号：US11415153B2

公开(公告)日：2022-08-16

申请号：US17378123

申请日：2021-07-16

Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

Inventor： Ryo Umeyama ,  Yoshiyuki Nakane

IPC: F04D29/66 ,  F04D29/42 ,  F04D29/28 ,  F04D17/10

Abstract: A centrifugal compressor comprises a rotation shaft, an impeller, and a casing. The impeller has a hub and a plurality of blades. The casing has an opposite surface facing a back surface of the hub, and a projection projecting from the opposite surface toward the impeller. The hub is provided with an accommodation space that accommodates the projection. The accommodation space includes a through hole penetrating the hub from the back surface toward an external radial surface. The through hole opens while avoiding the blades.

公开(公告)号：US11221013B2

公开(公告)日：2022-01-11

申请号：US16580338

申请日：2019-09-24

Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

Inventor： Yoshiyuki Nakane ,  Takahito Kunieda ,  Kaho Takeuchi ,  Ryo Umeyama ,  Satoru Mitsuda ,  Ryosuke Fukuyama

IPC: F04D29/06 ,  F04D27/00 ,  F04D17/12 ,  F01D25/18 ,  F04D29/10

Abstract: A centrifugal compressor includes a low-speed shaft, an impeller, a speed increaser, a housing, a separation wall, a shaft insertion hole, a seal member, an oil pan, an oil supply passage, an oil return passage, and a pressure reduction passage. The impeller is integrally rotated with a high-speed shaft. The housing has therein an impeller chamber accommodating the impeller and a speed increaser chamber accommodating the speed increaser. The centrifugal compressor includes a bypass passage having a first end communicating with the speed increaser chamber and a second end communicating with the oil pan.

公开(公告)号：US20130106234A1

公开(公告)日：2013-05-02

申请号：US13662574

申请日：2012-10-29

Applicant: Kabushiki Kaisha Toyota Jidoshokki

Inventor： Masanao Kagami ,  Yoshiyuki Nakane ,  Satoru Mitsuda ,  Noriyuki Suzuki

IPC: H02K1/28

CPC classification number: H02K1/2766 ,  H02K15/03

Abstract: A rotor core is composed of a plurality of laminated magnetic steel plates, and a plurality of magnet insertion holes include a pair of magnet insertion holes present to widen a spacing therebetween toward the outer peripheral edges of the magnetic steel plates. At least one magnetic steel plate includes communicating portions for allowing the magnet insertion holes to communicate with the outer peripheral edge of the magnetic steel plate, and a peninsula portion formed between the pair of magnet insertion holes present to widen the spacing therebetween toward the outer peripheral edge of the magnetic steel plate and also between a pair of the communicating portions continuous with the pair of magnet insertion holes. The rotor core includes a steel plate fixing portion for fixing the mutually adjacent magnetic steel plates to each other at the peninsula portion.

Abstract translation: 转子铁芯由多个层压的电磁钢板组成，多个磁铁插入孔包括一对磁体插入孔，以使磁性钢板的外周边缘之间的间隔加宽。 至少一个磁钢板包括用于允许磁体插入孔与电磁钢板的外周边缘连通的连通部分，以及形成在一对磁体插入孔之间的半岛部分，以使其间的间隔扩大到外周 电磁钢板的边缘以及与一对磁体插入孔连续的一对连通部之间。 转子铁芯包括用于在半岛部分处将彼此相邻的电磁钢板彼此固定的钢板固定部分。

公开(公告)号：US11811108B2

公开(公告)日：2023-11-07

申请号：US17441443

申请日：2020-03-24

Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

Inventor： Ryo Umeyama ,  Yoshiyuki Nakane ,  Takahito Kunieda

IPC: F04D29/28 ,  H01M8/04111 ,  F04D29/42 ,  F04D29/30 ,  F01D5/04 ,  F01D5/14

CPC classification number: H01M8/04111 ,  F04D29/284 ,  F04D29/4206 ,  F01D5/048 ,  F01D5/141 ,  F04D29/30 ,  F05D2240/303 ,  F05D2240/304 ,  F05D2250/70 ,  H01M2250/20

Abstract: A fuel cell centrifugal compressor includes: an impeller including a hub and blades; and a shroud. A smaller one of angles formed by each blade and a meridian surface is a blade angle. An absolute value of the blade angle on a hub-side of the blade is local minimum between hub-side front and rear edges of the blade. An absolute value of the blade angle on a shroud-side of the blade is local minimum between shroud-side front and rear edges of the blade. The hub-side of the blade is constantly less than or equal to the shroud-side of the blade in absolute value of the blade angle between the hub-side front and rear edges. The shroud-side rear edge is less than the shroud-side front edge in absolute value of the blade angle. The hub-side rear edge is greater than the hub-side front edge in absolute value of the blade angle.

公开(公告)号：US11788545B2

公开(公告)日：2023-10-17

申请号：US17482727

申请日：2021-09-23

Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

Inventor： Ryo Umeyama ,  Yoshiyuki Nakane

IPC: F04D29/28 ,  F04D17/10 ,  F04D29/30

CPC classification number: F04D29/284 ,  F04D17/10 ,  F04D29/30

Abstract: A centrifugal compressor comprises an impeller including a hub and a plurality of blades. Each blade has a positive pressure surface and a negative pressure surface extending from one side of an external radial surface toward the other side of the external radial surface and being of a positive pressure and a negative pressure, respectively, when the impeller rotates. The hub has a lightening hole that opens to the external radial surface between the positive pressure surface and the negative pressure surface of the plurality of blades. The lightening hole is provided closer to the positive pressure surface of the blade than the negative pressure surface of the blade.

公开(公告)号：US11131316B2

公开(公告)日：2021-09-28

申请号：US16715360

申请日：2019-12-16

Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

Inventor： Takahito Kunieda ,  Ryosuke Fukuyama ,  Yoshiyuki Nakane

IPC: F04D29/063 ,  F04D29/049 ,  F04D17/10 ,  F04D29/28 ,  F04D25/02 ,  F04D29/059 ,  F04D25/06

Abstract: A centrifugal compressor includes a partition wall that is arranged between a ring member and the bottom of a main body in a speed-increaser chamber. The centrifugal compressor further includes an introduction passage that guides oil in a stirring region to a storage region. The stirring region includes a region between the partition wall and the ring member in the speed-increaser chamber. The storage region includes a region between the partition wall and the bottom of the main body in the speed-increaser chamber. The oil that has been stirred by rotation of the ring member collides the inner circumferential surface of a speed increaser housing before flowing toward the partition wall. The oil is then guided to the storage region via the introduction passage. Since the oil stored in the storage region is unlikely to be stirred by rotation of the ring member, only a small amount of oil is stirred by the ring member.