WO2021192444A1 - 回転電機のロータ - Google Patents
回転電機のロータ Download PDFInfo
- Publication number
- WO2021192444A1 WO2021192444A1 PCT/JP2020/046341 JP2020046341W WO2021192444A1 WO 2021192444 A1 WO2021192444 A1 WO 2021192444A1 JP 2020046341 W JP2020046341 W JP 2020046341W WO 2021192444 A1 WO2021192444 A1 WO 2021192444A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rotor
- electric machine
- rotary electric
- holding sleeve
- seal ring
- Prior art date
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 53
- 239000002826 coolant Substances 0.000 claims abstract description 44
- 239000004918 carbon fiber reinforced polymer Substances 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 229920005989 resin Polymers 0.000 description 11
- 239000011347 resin Substances 0.000 description 11
- 230000004048 modification Effects 0.000 description 7
- 238000012986 modification Methods 0.000 description 7
- 239000000110 cooling liquid Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- -1 more specifically Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/278—Surface mounted magnets; Inset magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
Definitions
- This disclosure relates to a rotor of a rotary electric machine [a rotor of an electrical rotating device].
- Patent Document 1 discloses a rotary electric machine.
- the rotary electric machine disclosed in Patent Document 1 is an SPM (Surface Permanent Magnet) type rotary electric machine, and a permanent magnet is incorporated in the outer peripheral portion of the rotor.
- a holding sleeve is attached to the outside of the permanent magnet in order to prevent the permanent magnet from coming off the rotor due to the centrifugal force of the rotating rotor.
- the holding sleeve is divided into a plurality of split sleeves along the rotation axis direction of the rotor in order to suppress heat generation due to the eddy current loss in the holding sleeve described above.
- the purpose of the rotor of the rotary electric machine according to the present disclosure is to more reliably cool the permanent magnet in the SPM type rotary electric machine.
- the rotor of the rotary electric machine is composed of a rotor core, a plurality of permanent magnets attached to the outer peripheral portion of the rotor core, and a plurality of split sleeves divided along the rotation axis direction of the rotor.
- a seam formed between a holding sleeve that holds the plurality of permanent magnets from the outside of the permanent magnets, and adjacent split sleeves in the plurality of split sleeves, and each surface of the plurality of permanent magnets on the holding sleeve side.
- it includes a coolant flow path formed on each surface on the rotor core side, and a seal ring that covers the seam from the outer peripheral surface side or the inner peripheral surface side.
- the coolant flow path may be formed on each surface of the plurality of permanent magnets on the holding sleeve side.
- the seam comprises one or more seams
- the seal ring is a single tubular member covering all the seams, and is provided between the holding sleeve and the plurality of permanent magnets. It may be.
- the coolant flow path may be formed on the respective surfaces of the plurality of permanent magnets on the rotor core side.
- the seam comprises one or more seams
- the seal ring is a single tubular member covering all the seams, and is provided between the holding sleeve and the plurality of permanent magnets. It may be.
- the seam comprises one or more seams
- the seal ring comprises a plurality of annular members arranged in the direction of rotation, each covering at least one seam, the holding sleeve and the plurality. It may be provided between the permanent magnet and the permanent magnet.
- the seam may have one or more seams
- the seal ring may be a single cylindrical member covering all the seams and may be provided on the outer peripheral surface of the holding sleeve.
- the seam comprises one or more seams
- the seal ring is composed of a plurality of annular members arranged in the rotation axis direction, each covering at least one seam, and is an outer peripheral surface of the holding sleeve. It may be provided on the top.
- the seal ring may be made of metal.
- the seal ring may be made of CFRP.
- the permanent magnet in the SPM type rotary electric machine can be cooled more reliably.
- FIG. 1 is a cross-sectional view including a rotation axis of the rotor according to the first embodiment.
- FIG. 2 is an enlarged cross-sectional view including the rotation axis of the rotor.
- FIG. 3 is a cross-sectional view perpendicular to the rotation axis of the rotor.
- FIG. 4 is a cross-sectional view perpendicular to the rotation axis of the rotor according to the second embodiment.
- FIG. 5 is a cross-sectional view perpendicular to the rotation axis of the rotor according to the third embodiment.
- FIG. 1 to 3 show the rotor 2 of the rotary electric machine 1 according to the first embodiment.
- 2 is a cross-sectional view taken along the line II-II in FIG. 3
- FIG. 3 is a cross-sectional view taken along the line III-III in FIG.
- the rotary electric machine 1 of this embodiment functions as a generator.
- the generator (rotary electric machine) 1 includes a rotor 2 that rotates about a rotating shaft O, and a stator 3 that is arranged outside the rotor 2.
- the rotating shaft 4 of the rotor 2 is integrally formed with the rotating shaft of the external device 100.
- the generator 1 of the present embodiment is exposed to a high temperature by the heat discharged from the external device 100.
- the generator 1 generates electricity when the rotor 2 is rotated by the rotating shaft 4 rotated by the external device 100.
- the rotary shaft 4 of the present embodiment is a hollow shaft.
- the rotary shaft 4 extending from the rotor 2 toward the external device 100 is rotatably supported by a bearing 101 inside the external device 100.
- the rotor 2 further includes a rotor core 5, a permanent magnet 6, and a holding sleeve 7.
- the rotor core 5 is non-rotatably attached to the rotating shaft 4 and is made of laminated electrical steel sheets.
- the permanent magnets 6 are mounted side by side on the outer peripheral surface of the rotor core 5 in the circumferential direction.
- the holding sleeve 7 is arranged outside the permanent magnet 6. That is, the generator 1 of the present embodiment is an SPM type generator (rotary electric machine).
- the rotor core 5 is formed by laminating a large number of octagonal electrical steel sheets as shown in FIG. 3 in the direction of the rotation axis O, that is, in the direction of the rotation axis.
- Eight permanent magnets 6 are attached to each side of the octagon of the rotor core 5 and are arranged in the circumferential direction. Further, as shown in FIGS. 1 and 2, four permanent magnets 6 are arranged in the direction of the rotation axis. That is, eight rows of permanent magnets 6 parallel to the rotation axis direction are formed on the peripheral surface of the rotor core 5.
- the holding sleeve 7 is a tubular metal member arranged outside the permanent magnet 6, and holds the permanent magnet 6 so that the permanent magnet 6 does not come off from the rotor core 5 due to centrifugal force during rotation of the rotor 2. ing. It is conceivable that the holding sleeve is made of a fiber reinforced resin (for example, CFRP), but as described above, the generator 1 of the present embodiment operates in a high temperature environment. Therefore, the holding sleeve 7 of the present embodiment is made of metal instead of resin. Since the metal holding sleeve 7 has little change in strength and rigidity even in a high temperature environment, it can sufficiently hold the permanent magnet 6.
- CFRP fiber reinforced resin
- An eddy current is generated in the metal holding sleeve 7 due to fluctuations in the magnetic flux density when the rotor 2 is rotated, and the holding sleeve 7 generates heat.
- the holding sleeve 7 in order to suppress the permanent magnet 6 from being heated by the heat of the holding sleeve 7, is divided into five divided sleeves 7a in the rotation axis direction in order to reduce the eddy current. ..
- the adjacent split sleeves 7a are in close contact with each other, and the entire holding sleeve 7 composed of the plurality of split sleeves 7a forms a cylindrical shape that covers all the permanent magnets 6.
- the division position is arranged so that the division position of the holding sleeve 7 in the rotation axis direction does not match the division position of the permanent magnet 6 in the rotation axis direction. Since the entire holding sleeve 7 is divided into a plurality of divided sleeves 7a, the electric resistance between the adjacent divided sleeves 7a is increased and the interlinkage magnetic flux per the divided sleeves 7a is reduced. Therefore, the eddy current can be reduced to reduce the loss, and the heat generation due to the eddy current loss can also be reduced.
- a cylindrical seal ring 8 is arranged between the permanent magnet 6 and the holding sleeve 7.
- the seal ring 8 prevents the coolant (cooling oil) circulating inside the rotor 2 from leaking to the outside of the rotor 2 from the seam 7b between the adjacent split sleeves 7a.
- the circulation of the coolant and the seal ring 8 will be described in detail later.
- a circular end plate 9 and a first retaining ring 10 are attached to the end of the rotary shaft 4, which is a hollow shaft, on the opposite side of the external device 100.
- the end plate 9 closes the internal space of the hollow rotating shaft 4.
- a second retaining ring 11 is attached to the outer periphery of the first retaining ring 10.
- the inner peripheral portion of the first retaining ring 10 is attached to the end portion of the rotating shaft 4, and the outer peripheral portion thereof holds the rotor core 5 from the outside in the rotation axis direction together with the inner peripheral portion of the second retaining ring 11.
- the outer peripheral portion of the second retaining ring 11 holds the permanent magnet 6 from the outside in the rotation axis direction.
- An orifice ring 12 is disposed at the end of the rotor core 5 in the direction of the rotation axis, and the orifice ring 12 is held by the first holding ring 10.
- the outer peripheral edge of the second retaining ring 11 is in contact with the inner peripheral surface of the holding sleeve 7 described above.
- An O-ring is provided between the first retaining ring 10 and the second retaining ring 11.
- An O-ring is also provided between the second retaining ring 11 and the retaining sleeve 7. These O-rings prevent the coolant from leaking.
- a joint shaft 13 is connected to the central hole of the first retaining ring 10. The joint shaft 13 is connected to the coolant delivery pump and the coolant supply source via some members.
- a third retaining ring 14 is attached to the end of the rotating shaft 4 on the external device 100 side in symmetry with the second retaining ring 11 described above.
- the third retaining ring 14 is arranged on the outer peripheral surface of the rotor core 5.
- the outer peripheral edge of the third retaining ring 14 is in contact with the inner peripheral surface of the holding sleeve 7.
- the third retaining ring 14 holds the permanent magnet 6 from the outside in the rotation axis direction.
- a collar 15 is attached between the inner peripheral portion of the rotor core 5 and the rotating shaft 4.
- the peripheral end of the collar 15 on the rotor 2 side is attached to the inner peripheral portion of the rotor core 5, and the peripheral end on the opposite side is attached to the rotating shaft 4 inside the external device 100.
- the outer peripheral surface of the collar 15 is slidable and liquid-tightly in contact with the oil seal 102 of the external device 100.
- a gap is formed between the inner peripheral surface of the collar 15 and the outer peripheral surface of the rotating shaft 4.
- An O-ring is attached between the rotor core 5 and the third retaining ring 14.
- An O-ring is also attached between the rotor core 5 and the collar 15.
- An O-ring is also attached to the peripheral surface of contact between the third retaining ring 14 and the retaining sleeve 7.
- a supply path P1 is formed inside the joint shaft 13 along the rotation axis O.
- a communication hole P1a (see FIG. 1) communicating with the storage chamber P2 surrounded by the joint shaft 13, the end plate 9, and the first retaining ring 10 is formed in the radial direction.
- the ring-shaped storage chamber P2 stores the cooling liquid supplied through the supply path P1.
- a plurality of introduction paths P3 are formed in the radial direction, that is, in a radial direction.
- Each introduction path P3 penetrates the first retaining ring 10, the orifice ring 12, and the second retaining ring 11.
- An orifice P3a is formed in an intermediate portion of the introduction path P3, that is, an orifice ring 12.
- the orifice P3a controls the amount of coolant passing through the introduction path P3.
- the outer peripheral end [outer ends] of the introduction path P3 reaches the seal ring 8.
- the axial flow path P4 is a coolant flow path formed on the surface of the permanent magnet 6.
- One end of the axial flow path P4 communicates with the outer peripheral side end of the introduction path P3 described above on a one-to-one basis.
- the other end of the axial flow path P4 communicates with the lead-out path P5 similar to the introduction path P3 on a one-to-one basis.
- a plurality of lead paths P5 are formed in the radial direction, that is, in a radial pattern. Each lead-out path P5 penetrates the third retaining ring 14 and the rotor core 5.
- the outer peripheral end of the lead path P5 also reaches the seal ring 8. Further, the inner peripheral end portions [inner ends] of the lead path P5 reach the rotating shaft 4 and communicate with each other in the circumferential direction (form an annular flow path). At least one discharge hole P5a penetrating the rotary shaft 4 is formed at the inner peripheral end (annular flow path) of the lead path P5. A part of the coolant is discharged into the internal space of the rotating shaft 4 through the discharge hole P5a.
- a tubular flow path P5b formed toward the external device 100 along the rotation axis direction is also formed.
- the tubular flow path P5b is formed by the above-mentioned gap formed between the inner peripheral surface of the collar 15 and the outer peripheral surface of the rotating shaft 4.
- a plurality of discharge holes P5c are formed at the end of the collar 15 on the external device 100 side, and communicate with the annular flow path P6 (see also FIG. 1).
- the coolant flowing through the axial flow path P4 is led out to the lead-out path P5, and a part of the coolant is discharged from the discharge hole P5a into the rotating shaft 4 and collected by the external device 100. Further, the coolant led out to the lead-out path P5 flows through the tubular flow path P5b, passes through the discharge hole P5c, and is discharged to the annular flow path P6. The coolant flowing through the tubular flow path P5b cools the collar 15 supported by the oil seal 102. Further, the cooling liquid flowing through the annular flow path P6 cools the periphery of the bearing 101 (including the portion supported by the bearing 101 of the rotating shaft 4). The coolant flowing through the annular flow path P6 is also recovered by the external device 100.
- the holding sleeve 7 of the present embodiment is composed of a plurality of divided sleeves 7a divided in the rotation axis direction. Therefore, a seam 7b is formed between the adjacent split sleeves 7a.
- the seal ring 8 prevents the coolant flowing through the axial flow path P4 from leaking from the seam 7b due to the centrifugal force accompanying the rotation of the rotor 2.
- the seal ring 8 covers the seam 7b on the inner surface side of the holding sleeve 7 to prevent the coolant from leaking from the seam 7b.
- the seal ring 8 of this embodiment is made of metal in consideration of heat resistance.
- the seal ring 8 may be formed of a resin, for example, a fiber reinforced resin, more specifically, CFRP. Since CFRP has high strength and high rigidity in the tensile direction, the permanent magnet 6 can be firmly held. In addition, the resin can exhibit higher sealing property with respect to the seam 7b than the metal.
- the CFRP matrix resin in this case is a thermosetting resin.
- the holding sleeve 7 (split sleeve 7a) is attached to the outside of the permanent magnet 6 by shrink fitting [shrink fitting] or hydraulic fitting [hydraulic dilation fitting].
- the seal ring 8 is interposed between the permanent magnet 6 and the holding sleeve 7 when the holding sleeve 7 is attached.
- shrink fitting the heat for expanding the holding sleeve 7 may be used for curing the CFRP matrix resin (thermosetting resin) of the seal ring 8.
- the holding sleeve 7 is expanded by using hydraulic pressure.
- the rotor 2 of the present embodiment and the rotor 2 of the first embodiment are different in terms of the formation position of the axial flow path P4.
- the axial flow path P4 of the first embodiment is formed on the surface of each permanent magnet 6 on the holding sleeve 7 side.
- the axial flow path P4 of this embodiment is formed on the surface of each permanent magnet 6 on the rotor core 5 side. That is, four axial flow paths P4 parallel to the rotation axis direction are formed on the inner peripheral surface of each permanent magnet 6.
- the outer peripheral end portions of the introduction path P3 and the lead path P5 do not reach the seal ring 8 and end at the position of the axial flow path P4.
- the introduction path P3 and the lead-out path P5 communicate with the axial flow path P4 on a one-to-one basis, respectively.
- the coolant flowing through the axial flow path P4 can cool the rotor core 5 together with the permanent magnet 6.
- the coolant may reach the holding sleeve 7 through the gap between the members due to the centrifugal force accompanying the rotation of the rotor 2.
- the seal ring 8 is also provided in this embodiment, it is possible to prevent the coolant from leaking from the seam 7b of the split sleeve 7a.
- the seal ring 8 of the first embodiment and the second embodiment described above was a single tubular member covering all the seams 7b.
- the seal ring 8 is sandwiched between the outer peripheral surface of the permanent magnet 6 and the inner peripheral surface of the holding sleeve 7 over the entire circumference thereof (in the first embodiment, the seal ring 8 is axially flowed). It is not sandwiched in the part of the road P4). Therefore, the seal ring 8 of the second embodiment may be composed of a plurality of annular members covering at least one seam 7b instead of a single tubular member covering all the seams 7b (second embodiment). Modification example). In this case, the plurality of annular members may be arranged in the rotation axis direction, and an axial gap may be formed between adjacent annular members.
- each annular member may cover only one seam 7b, or may cover a plurality of seams 7b. They may be mixed and used.
- a groove having a depth equal to the thickness of the annular member (seal ring 8) and a width equal to the width of the annular member on the inner peripheral surface of the holding sleeve 7. May be formed along the seam 7b.
- the annular member is arranged in these grooves.
- the seam 7b is located at the center of the groove in the width direction.
- the seal ring 8 is a single tubular member that covers all the seams, it is possible to more reliably prevent the coolant from leaking from the seams 7b.
- the seal ring 8 by forming the seal ring 8 with a plurality of annular members covering at least one seam 7b, the material of the seal ring 8 can be saved and the weight of the rotor 2 can be reduced.
- the rotor 2 of the present embodiment and the rotor 2 of the first embodiment are different in terms of the arrangement position of the seal ring 8.
- the seal ring 8 of the first embodiment is arranged between the permanent magnet 6 and the holding sleeve 7.
- the seal ring 8 of the present embodiment is arranged on the outer peripheral surface of the holding sleeve 7.
- the seal ring 8 of the present embodiment is a single tubular member that covers all the seams.
- the seal ring 8 covers the seam 7b on the outer surface side of the holding sleeve 7 to prevent the coolant from leaking from the seam 7b.
- the seal ring 8 may be composed of a plurality of annular members covering at least one seam 7b (a modification of the third embodiment).
- the plurality of annular members may be arranged in the rotation axis direction, and an axial gap may be formed between adjacent annular members.
- each annular member may cover only one seam 7b, or may cover a plurality of seams 7b. They may be mixed and used.
- a depth equal to the thickness of the annular member (seal ring 8) and a width equal to the width of the annular member 7 are equal to the outer peripheral surface of the holding sleeve 7.
- a groove having the above may be formed along the seam 7b. The annular member will be placed in these grooves. The seam 7b is located at the center of the groove in the width direction. In this way, the outer peripheral surface of the holding sleeve 7 (which includes the annular member in the groove) can be made into a smooth curved surface.
- the seal ring 8 of this modification is also made of metal as in the first embodiment, but may be formed of CFRP.
- the axial flow path P4 may be formed on the surface of the permanent magnet 6 on the rotor core 5 side (see the second embodiment of FIG. 4).
- the seal ring 8 is a single tubular member that covers all the seams 7b, it is possible to more reliably prevent the coolant from leaking from the seams 7b.
- the seal ring 8 by forming the seal ring 8 with a plurality of annular members covering at least one seam 7b, the material of the seal ring 8 can be saved and the weight of the rotor 2 can be reduced.
- the rotary electric machine 1 provided with the rotor 2 of the above embodiment was a generator 1 that receives a driving force to generate electricity.
- the rotor of the present disclosure can also be applied to a motor that receives electric power and outputs power. That is, the rotor of the present disclosure can be applied to a rotary electric machine such as a generator or a motor.
- the permanent magnet 6 is divided into four in the rotation axis direction, but the number of divisions is not limited to this.
- the holding sleeve 7 is divided into five divided sleeves 7a in the rotation axis direction, but the number of the divided sleeves 7 is not limited to this.
- the number of axial flow paths P4 is not limited to the number in the above embodiment.
- the axial flow path P4 is formed linearly parallel to the rotation axis direction.
- the axial flow path P4 may be formed in a meandering manner or in a zigzag manner.
- the rotary electric machine 1 provided with the rotor 2 of the above embodiment has been described on the premise that it is used in a high temperature environment.
- the rotors of the present disclosure do not have to be used in a high temperature environment and may be used in other temperature environments. Even in such a case, the effect of more reliably preventing the leakage of the coolant can be realized.
- the matrix resin may be a thermoplastic resin instead of a thermosetting resin when not in a high temperature environment.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
Description
2 ロータ
5 ロータコア
6 永久磁石
7 保持スリーブ
7a 分割スリーブ
7b 継ぎ目
8 シールリング
P4 軸方向流路(冷却液流路)
Claims (10)
- 回転電機のロータであって、
ロータコアと、
前記ロータコアの外周部に取り付けられた複数の永久磁石と、
前記ロータの回転軸方向に沿って分割された複数の分割スリーブによって構成され、前記複数の永久磁石の外側から前記複数の永久磁石を保持する保持スリーブと、
前記複数の分割スリーブにおける隣接する分割スリーブの間に形成される継ぎ目と、
前記複数の永久磁石の前記保持スリーブ側の各表面又は前記ロータコア側の各表面上に形成された冷却液流路と、
前記継ぎ目を外周面側又は内周面側から覆うシールリングと、を備えた回転電機のロータ。 - 請求項1に記載の回転電機のロータであって、
前記冷却液流路が、前記複数の永久磁石の前記保持スリーブ側の前記各表面上に形成されている、回転電機のロータ。 - 請求項2に記載の回転電機のロータであって、
前記継ぎ目が一つ以上の継ぎ目を備えており、
前記シールリングが、全ての前記継ぎ目を覆う単一の筒状部材であり、前記保持スリーブと前記複数の永久磁石との間に設けられている、回転電機のロータ。 - 請求項1に記載の回転電機のロータであって、
前記冷却液流路が、前記複数の永久磁石の前記ロータコア側の前記各表面上に形成されている、回転電機のロータ。 - 請求項4に記載の回転電機のロータであって、
前記継ぎ目が一つ以上の継ぎ目を備えており、
前記シールリングが、全ての前記継ぎ目を覆う単一の筒状部材であり、前記保持スリーブと前記複数の永久磁石との間に設けられている、回転電機のロータ。 - 請求項4に記載の回転電機のロータであって、
前記継ぎ目が一つ以上の継ぎ目を備えており、
前記シールリングが、それぞれ少なくとも一つの前記継ぎ目を覆う、前記回転軸方向に並べられた複数の環状部材からなり、前記保持スリーブと前記複数の永久磁石との間に設けられている、回転電機のロータ。 - 請求項1に記載の回転電機のロータであって、
前記継ぎ目が一つ以上の継ぎ目を備えており、
前記シールリングが、全ての前記継ぎ目を覆う単一の筒状部材であり、前記保持スリーブの外周面上に設けられている、回転電機のロータ。 - 請求項1に記載の回転電機のロータであって、
前記継ぎ目が一つ以上の継ぎ目を備えており、
前記シールリングが、それぞれ少なくとも一つの前記継ぎ目を覆う、前記回転軸方向に並べられた複数の環状部材からなり、前記保持スリーブの外周面上に設けられている、回転電機のロータ。 - 請求項1~8のいずれか一項に記載の回転電機のロータであって、
前記シールリングが金属製である、回転電機のロータ。 - 請求項1~8のいずれか一項に記載の回転電機のロータであって、
前記シールリングがCFRP製である、回転電機のロータ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20926751.7A EP4131742A4 (en) | 2020-03-25 | 2020-12-11 | ROTOR OF AN ELECTRIC LATHE |
CA3156971A CA3156971C (en) | 2020-03-25 | 2020-12-11 | Rotor of electrical rotating device |
JP2022509264A JP7231112B2 (ja) | 2020-03-25 | 2020-12-11 | 回転電機のロータ |
US17/657,976 US20220231559A1 (en) | 2020-03-25 | 2022-04-05 | Rotor of electrical rotating device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020-053918 | 2020-03-25 | ||
JP2020053918 | 2020-03-25 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/657,976 Continuation US20220231559A1 (en) | 2020-03-25 | 2022-04-05 | Rotor of electrical rotating device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2021192444A1 true WO2021192444A1 (ja) | 2021-09-30 |
Family
ID=77890063
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2020/046341 WO2021192444A1 (ja) | 2020-03-25 | 2020-12-11 | 回転電機のロータ |
Country Status (5)
Country | Link |
---|---|
US (1) | US20220231559A1 (ja) |
EP (1) | EP4131742A4 (ja) |
JP (1) | JP7231112B2 (ja) |
CA (1) | CA3156971C (ja) |
WO (1) | WO2021192444A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7293701B2 (ja) * | 2019-02-08 | 2023-06-20 | 株式会社デンソー | 回転電機 |
DE102022120774A1 (de) | 2022-08-17 | 2024-02-22 | Bayerische Motoren Werke Aktiengesellschaft | Rotor für eine elektrische Traktionsmaschine |
DE102022211821A1 (de) * | 2022-11-09 | 2024-05-16 | Robert Bosch Gesellschaft mit beschränkter Haftung | Rotor einer elektrischen Maschine |
DE102023200806A1 (de) | 2023-02-01 | 2024-08-01 | Robert Bosch Gesellschaft mit beschränkter Haftung | Rotor für eine elektrische Maschine, eine elektrische Maschine, sowie Verfahren zum Herstellen eines solchen Rotors |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08205438A (ja) * | 1995-01-25 | 1996-08-09 | Toshiba Ave Corp | モータ |
JP2013201853A (ja) * | 2012-03-26 | 2013-10-03 | Toshiba Mitsubishi-Electric Industrial System Corp | 回転電機 |
JP2017085778A (ja) | 2015-10-28 | 2017-05-18 | 川崎重工業株式会社 | 回転電気機械のロータ |
JP2020053918A (ja) | 2018-09-28 | 2020-04-02 | パナソニックIpマネジメント株式会社 | アンテナ装置、及び車載ライト装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3369024B2 (ja) * | 1995-04-14 | 2003-01-20 | 松下電器産業株式会社 | 永久磁石回転子とその製造方法 |
US20080238234A1 (en) * | 2007-03-27 | 2008-10-02 | Hamilton Sundstrand Corporation | Segmented permanent magnet rotor for high speed synchronous machines |
US8253298B2 (en) * | 2008-07-28 | 2012-08-28 | Direct Drive Systems, Inc. | Slot configuration of an electric machine |
US8928195B2 (en) * | 2010-04-23 | 2015-01-06 | Ihi Corporation | Rotary machine |
DE102010040400A1 (de) * | 2010-09-08 | 2012-03-08 | Siemens Aktiengesellschaft | Rotor für eine elektrische Maschine |
JP6904833B2 (ja) * | 2017-07-26 | 2021-07-21 | ファナック株式会社 | 回転子及び回転電機 |
-
2020
- 2020-12-11 JP JP2022509264A patent/JP7231112B2/ja active Active
- 2020-12-11 EP EP20926751.7A patent/EP4131742A4/en active Pending
- 2020-12-11 WO PCT/JP2020/046341 patent/WO2021192444A1/ja unknown
- 2020-12-11 CA CA3156971A patent/CA3156971C/en active Active
-
2022
- 2022-04-05 US US17/657,976 patent/US20220231559A1/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08205438A (ja) * | 1995-01-25 | 1996-08-09 | Toshiba Ave Corp | モータ |
JP2013201853A (ja) * | 2012-03-26 | 2013-10-03 | Toshiba Mitsubishi-Electric Industrial System Corp | 回転電機 |
JP2017085778A (ja) | 2015-10-28 | 2017-05-18 | 川崎重工業株式会社 | 回転電気機械のロータ |
JP2020053918A (ja) | 2018-09-28 | 2020-04-02 | パナソニックIpマネジメント株式会社 | アンテナ装置、及び車載ライト装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP4131742A4 |
Also Published As
Publication number | Publication date |
---|---|
JP7231112B2 (ja) | 2023-03-01 |
CA3156971C (en) | 2024-03-26 |
EP4131742A4 (en) | 2024-04-10 |
EP4131742A1 (en) | 2023-02-08 |
JPWO2021192444A1 (ja) | 2021-09-30 |
CA3156971A1 (en) | 2021-09-30 |
US20220231559A1 (en) | 2022-07-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2021192444A1 (ja) | 回転電機のロータ | |
US7514827B2 (en) | Self-cooled rotor for an electrical machine | |
CN110784036B (zh) | 用于电机的转子布置的端板、用于电机的转子布置和车辆 | |
US20200036249A1 (en) | Rotor assembly for an electric machine, electric machine for a vehicle, and vehicle | |
US6091168A (en) | Rotor for a dynamoelectric machine | |
JP5445675B2 (ja) | 回転機 | |
WO2011118062A1 (ja) | 回転電機用ロータ | |
JP2013017297A (ja) | 回転電機のロータ | |
JP2019106875A (ja) | 冷却機能を備える回転子 | |
CN111725927B (zh) | 旋转电机 | |
CN114365387A (zh) | 轴向通量型电机 | |
JPWO2021192444A5 (ja) | ||
US5034639A (en) | Stator drain and electrical apparatus employing the same | |
CN111416456B (zh) | 用于电机的液冷式转子 | |
JP3596514B2 (ja) | 回転電機の冷却構造 | |
US6057619A (en) | Stress relief in a magnetic thrust bearing | |
JP5892091B2 (ja) | マルチギャップ型回転電機 | |
US20060082248A1 (en) | Method for cooling a transverse flow synchronous machine and transverse flow synchronous machine | |
JP2013051805A (ja) | 回転電機の冷却構造 | |
CN113394937A (zh) | 包括使冷却剂循环通过气隙的系统的轴向磁通电机 | |
JP6151668B2 (ja) | 回転電機用ロータ | |
JP3675363B2 (ja) | 回転電機 | |
US20240154511A1 (en) | Magnetic geared rotating machine, power generation system, and magnetic pole piece rotor | |
WO2021149720A1 (ja) | 磁極片装置、磁気歯車、磁気ギアードモータ並びに磁気ギアード発電機 | |
US20230361644A1 (en) | Electrical machines |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 20926751 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2022509264 Country of ref document: JP Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 3156971 Country of ref document: CA |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2020926751 Country of ref document: EP Effective date: 20221025 |