WO2013171839A1 - Dynamo-electric machine - Google Patents

Dynamo-electric machine Download PDF

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Publication number
WO2013171839A1
WO2013171839A1 PCT/JP2012/062372 JP2012062372W WO2013171839A1 WO 2013171839 A1 WO2013171839 A1 WO 2013171839A1 JP 2012062372 W JP2012062372 W JP 2012062372W WO 2013171839 A1 WO2013171839 A1 WO 2013171839A1
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WO
WIPO (PCT)
Prior art keywords
rotor
wall portion
electrical machine
rotating electrical
air
Prior art date
Application number
PCT/JP2012/062372
Other languages
French (fr)
Japanese (ja)
Inventor
野中 剛
荘平 大賀
Original Assignee
株式会社安川電機
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社安川電機 filed Critical 株式会社安川電機
Priority to PCT/JP2012/062372 priority Critical patent/WO2013171839A1/en
Publication of WO2013171839A1 publication Critical patent/WO2013171839A1/en

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/32Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K9/00Arrangements for cooling or ventilating
    • H02K9/08Arrangements for cooling or ventilating by gaseous cooling medium circulating wholly within the machine casing

Definitions

  • the present invention relates to a rotating electrical machine, and more particularly, to a rotating electrical machine including a rotor provided with ventilation holes.
  • a rotating electrical machine provided with ventilation holes is known.
  • Such a rotating electrical machine is disclosed in, for example, Japanese Patent Application Laid-Open No. 2011-193628.
  • the above Japanese Patent Application Laid-Open No. 2011-193628 discloses a rotating electrical machine in which a ventilation hole penetrating along the axial direction is provided in a frame.
  • This rotating electrical machine is configured such that when the rotor rotates, the air inside the rotating electrical machine moves to cool the rotating electrical machine.
  • the present invention has been made to solve the above-described problems, and one object of the present invention is to provide a rotating electrical machine capable of cooling the rotor more effectively. .
  • the rotating electrical machine includes a rotor provided with a ventilation hole penetrating along the axial direction, and a first air flow passage disposed on one side surface in the axial direction of the rotor and connected to the ventilation hole.
  • the air discharge member is formed so as to extend to the vicinity of the outer peripheral portion of the rotor, and the first air flow passage is closed in the radial inner peripheral side and the lateral direction, and is opened on the outer peripheral side. Is configured to do.
  • the air discharge member including the first air flow passage connected to the ventilation hole is provided, and the air discharge member rotates the air discharge member together with the rotor to thereby remove the air in the ventilation hole.
  • the air in the ventilation hole is forcibly exhausted by the air exhaust member, so compared with the case where only the ventilation hole is provided.
  • the rotor can be cooled more effectively.
  • the air discharge member so as to extend to the vicinity of the outer peripheral portion of the rotor, the centrifugal force acting on the air discharged toward the outside of the rotor through the first air flow passage is increased, The air in the vent hole can be forcibly discharged with a stronger force. As a result, the rotor can be cooled more effectively.
  • the rotating electrical machine is a centrifugal fan provided with a rotor provided with a ventilation hole penetrating along the axial direction, and an air flow passage disposed on one side surface of the rotor in the axial direction and connected to the ventilation hole.
  • the centrifugal fan extends to the vicinity of the outer peripheral portion of the rotor, and is configured to discharge the air in the ventilation hole toward the outside of the rotor through the air flow passage by rotating with the rotor. Yes.
  • the centrifugal fan including the air flow path connected to the ventilation hole is provided, and the centrifugal fan is rotated together with the rotor so that the air in the ventilation hole is changed to the air flow path. Since the air in the ventilation hole is forcibly exhausted by the centrifugal fan, the rotor is cooled more than the case where only the ventilation hole is provided. Can be done effectively. Further, by forming the centrifugal fan so as to extend to the vicinity of the outer peripheral portion of the rotor, the centrifugal force acting on the air discharged toward the outside of the rotor through the air flow passage is increased, so that the ventilation holes The air can be forcibly discharged with a stronger force. As a result, the rotor can be cooled more effectively.
  • the rotor can be cooled more effectively.
  • the rotating electrical machine 100 includes a stator 1, a rotor 2, a frame 3, an anti-load side bracket 4, a load side bracket 5, and an encoder unit 6.
  • the stator 1 and the rotor 2 are disposed so as to face each other in the radial direction.
  • the frame 3 is disposed so as to cover the outer peripheral portion of the stator 1.
  • the anti-load side bracket 4 is provided so as to cover one side of the stator 1 and the rotor 2 in the axial direction (arrow X1 direction side, anti-load side).
  • the load side bracket 5 is provided so as to cover the other axial side of the stator 1 and the rotor 2 (arrow X2 direction side, load side).
  • the stator 1 includes a stator core 11 provided with a plurality of (12 in the first embodiment) slots 12 and a coil 13 wound around the slots 12. Further, a mold resin 14 is provided so as to cover the coil 13, and the coil 13 is insulated from the stator core 11 and the load side bracket 5 by the mold resin 14. In addition, a connection portion 15 for connecting the coil 13 is provided on the side of the coil 13 in the arrow X1 direction (on the opposite side of the load).
  • the rotor 2 includes a rotor core 21, a rotating shaft 22, a centrifugal fan 23, and an air suction member 24.
  • the rotor core 21 is inserted into the rotation shaft 22.
  • the rotating shaft 22 is supported by the load side bearing 7a and the anti-load side bearing 7b.
  • a plurality of permanent magnets 25 are embedded in the rotor 2 (rotor core 21).
  • the plurality of permanent magnets 25 includes a plurality of sets (10 sets in the first embodiment) of permanent magnets 25 arranged in a substantially V shape when viewed from the axial direction.
  • the rotor 2 (rotor core 21) is provided with a plurality of (10 in the first embodiment) ventilation holes 26 penetrating along the axial direction.
  • the ventilation hole 26 is provided for each magnetic pole formed by the permanent magnet 25. Specifically, the ventilation hole 26 is arrange
  • the centrifugal fan 23 is an example of an “air discharge member”.
  • a centrifugal fan 23 is disposed on one side surface 21a in the axial direction (arrow X1 direction side) of the rotor 2 (rotor core 21).
  • the centrifugal fan 23 is configured to include an air flow passage 231 connected to the ventilation hole 26.
  • the centrifugal fan 23 is formed so as to extend to the vicinity of the outer peripheral portion of the rotor 2 (rotor core 21), and rotates together with the rotor 2 so that the air in the ventilation hole 26 passes through the air flow passage 231.
  • the outer peripheral portion 23a see FIG.
  • the centrifugal fan 23 is disposed on the inner peripheral side (for example, about 1 mm) from the outer peripheral portion 21c of the rotor core 21 when viewed from the axial direction. That is, the diameter of the centrifugal fan 23 is smaller than the diameter of the rotor core 21.
  • the centrifugal fan 23 is configured to suck out the air in the ventilation holes 26 and discharge it from the vicinity of the outer peripheral portion of the rotor 2 to the outside by centrifugal force when rotating together with the rotor 2.
  • the air flow passage 231 is an example of a “first air flow passage”.
  • the centrifugal fan 23 includes the top surface portion 232 facing the one side surface 21 a of the rotor 2 and the one side surface 21 a of the rotor 2.
  • the peripheral wall portion 233 that closes the radially inner peripheral side and the side wall portion 234 that closes the lateral side of the one side surface 21a of the rotor 2 are included.
  • the air flow passage 231 is formed by a region surrounded by the top surface portion 232, the peripheral wall portion 233, and the side wall portion 234 (the side wall portion 234a disposed on one side in the circumferential direction and the side wall portion 234b disposed on the other side, see FIG. 9). Is formed.
  • an opening 235 is provided in the vicinity of the outer peripheral portion of the one side surface 21 a of the rotor 2 of the air flow passage 231.
  • the top surface portion 232 is disposed in a state of being separated from the one side surface 21a of the rotor 2 by a distance d1 (see FIG. 1).
  • the air flow passage 231 is formed in a substantially fan shape that extends in the outer peripheral direction of the rotor 2 when viewed from the axial direction. This is because more centrifugal force acting on the air is used.
  • the top surface portion 232 and the peripheral wall portions 233 (233a, 233b) are examples of the “first top surface portion” and the “first peripheral wall portion”, respectively.
  • the side wall portion 234 and the opening 235 are examples of a “first side wall portion” and a “first opening”, respectively.
  • a plurality (10 in the first embodiment) of the air holes 26 and the air flow passages 231 are provided along the circumferential direction of the rotor 2, and the adjacent air flow passages 231 are provided.
  • the side wall portion 234 is divided.
  • a plurality of openings (235 in the first embodiment) are provided along the circumferential direction of the rotor 2, and the circumferential length L1 (see FIG. 6) of the plurality of openings 235 is provided.
  • the side wall portion 234 located between the adjacent openings 235 is configured to be longer than the circumferential length L2.
  • the peripheral wall portion 233 of the centrifugal fan 23 is seen from the vent hole 26 in the radial inner periphery side (rotation shaft 22 side) from the ventilation hole 26 as viewed from the axial direction. ) At a position separated by a predetermined distance L3, the inner peripheral side in the radial direction of the rotor 2 of the ventilation hole 26 is closed.
  • the centrifugal fan 23 is formed by pressing a non-magnetic metal plate-like member (for example, an aluminum plate), so that the top surface portion 232, a peripheral wall portion 233, a side wall portion 234, and an opening 235 are integrally formed.
  • the air flow passage 231 formed by the region surrounded by the top surface portion 232, the peripheral wall portion 233, and the side wall portion 234 is formed in a convex shape that protrudes in the direction of the arrow X1 of the rotor 2 (see FIG. 1).
  • the part 236 other than the part which comprises the air flow path 231 of the centrifugal fan 23 is formed in the concave shape dented in the arrow X2 direction side.
  • a plurality of (in the first embodiment, 10) bolt insertion holes 237 into which the bolts 8 are inserted are provided in a portion 236 other than the portion constituting the air flow passage 231 of the centrifugal fan 23.
  • the centrifugal fan 23 has a bolt on the inner peripheral side of the rotor core 21 (the portion 236 other than the portion constituting the air flow passage 231) with respect to the ventilation hole 26 as viewed from the axial direction. It is attached to the rotor core 21 by a bolt 8 inserted through the insertion hole 237.
  • the air suction member 24 is disposed on the other side surface 21b in the axial direction (arrow X2 direction side) of the rotor 2 (rotor core 21).
  • the air suction member 24 is configured to include an air flow passage 241 connected to the ventilation hole 26. Further, the air suction member 24 is configured to suck the air around the rotor 2 toward the ventilation hole 26 via the air flow passage 241 by rotating together with the rotor 2.
  • the air flow passage 241 is an example of a “second air flow passage”.
  • the air suction member 24 includes a top surface portion 242 facing the other side surface 21 b of the rotor 2 and a radial direction on the other side surface 21 b of the rotor 2.
  • the peripheral wall portion 243 that closes the outer peripheral side of the rotor 2 and the side wall portion 244 that closes the side in the circumferential direction of the other side surface 21b of the rotor 2 are included.
  • An air flow passage 241 is formed by a region surrounded by the top surface portion 242, the peripheral wall portion 243, and the side wall portion 244 (the side wall portion 244a disposed on one side in the circumferential direction and the side wall portion 244b disposed on the other side). Yes.
  • an opening 245 is provided in the vicinity of the inner peripheral portion of the other side surface 21 b of the rotor 2 of the air flow passage 241.
  • the air flow passage 241 is formed in a substantially rectangular shape when viewed from the axial direction.
  • the top surface portion 242 and the peripheral wall portion 243 are examples of the “second top surface portion” and the “second peripheral wall portion”, respectively.
  • the side wall portions 244 (244a, 244b) and the opening 245 are examples of the “second side wall portion” and the “second opening”, respectively.
  • a plurality of openings (245 in the first embodiment) are provided along the circumferential direction of the rotor 2, and the circumferential length L4 of the plurality of openings 245 is provided. (Refer to FIG. 10) is configured to be larger than the circumferential length L5 of the side wall portion 244 located between the adjacent openings 245.
  • the peripheral wall portion 243 is separated from the ventilation hole 26 by a predetermined distance L6 (see FIG. 5) on the outer peripheral side in the radial direction of the rotor 2 when viewed from the axial direction. It is comprised so that the outer peripheral side of a radial direction may be plugged up.
  • the air suction member 24 is formed by pressing a metal plate-like member (for example, aluminum sheet metal) so that the top surface portion 242, the peripheral wall portion 243, the side wall portion 244, and the opening 245 are integrated. It is formed to include.
  • the air suction member 24 is fixed to the rotor core 21 with an adhesive, a double-sided tape or a bolt (not shown).
  • the centrifugal fan 23 and the air suction member 24 rotate together with the rotor 2 (rotor core 21).
  • the centrifugal force generated when the centrifugal fan 23 rotates causes the air in the ventilation hole 26 to be sucked out through the air flow passage 231 and discharged from the vicinity of the outer peripheral portion of the rotor 2 to the outside (air flow in FIG. 1). ).
  • the air suction member 24 rotates together with the rotor 2
  • the air around the rotor 2 is sucked to the ventilation hole 26 side through the air flow passage 241.
  • the centrifugal fan 23 including the air flow passage 231 connected to the ventilation hole 26 is provided, and the centrifugal fan 23 is rotated together with the rotor 2 so that the air in the ventilation hole 26 is air. It is configured to discharge toward the outside of the rotor 2 through the flow passage 231. Thereby, since the air of the ventilation hole 26 is forcedly discharged
  • the centrifugal fan 23 by forming the centrifugal fan 23 so as to extend to the vicinity of the outer peripheral portion of the rotor 2, the centrifugal force acting on the air discharged toward the outside of the rotor 2 through the air flow passage 231 increases.
  • the air in the ventilation hole 26 can be forcibly discharged with a stronger force. As a result, the rotor 2 can be cooled more effectively.
  • the centrifugal fan 23 sucks out the air in the ventilation holes 26 by the centrifugal force when rotating together with the rotor 2 and discharges the air from the vicinity of the outer periphery of the rotor 2 to the outside.
  • the rotor 2 can be easily cooled by sucking out the air in the ventilation hole 26 by the centrifugal fan 23.
  • the centrifugal fan 23 is closed on the top surface portion 232 facing the one side surface 21 a of the rotor 2 and the radially inner peripheral side of the one side surface 21 a of the rotor 2.
  • the peripheral wall portion 233 and the side wall portion 234 that covers the circumferential side of the one side surface 21a of the rotor 2 are configured to be included.
  • an air flow passage 231 is formed by a region surrounded by the top surface portion 232, the peripheral wall portion 233, and the side wall portion 234, and an opening is formed in a portion near the outer peripheral portion of the one side surface 21a of the rotor 2 of the air flow passage 231.
  • 235 is provided. Thereby, the air of the ventilation hole 26 can be easily discharged
  • a plurality of ventilation holes 26 and air flow passages 231 are provided along the circumferential direction of the rotor 2, and the adjacent air flow passages 231 are divided by the side wall portions 234. Configure as follows. Thereby, since the air in the air flow passage 231 is moved to the opening 235 side by the side wall portion 234, the air in the ventilation hole 26 can be effectively discharged.
  • a plurality of openings 235 are provided along the circumferential direction of the rotor 2, and the circumferential length L1 of the plurality of openings 235 is set to the adjacent openings 235.
  • the side wall portion 234 located between the two is configured to be larger than the circumferential length L2.
  • the peripheral wall portion 233 of the centrifugal fan 23 is separated by a predetermined distance L3 from the ventilation hole 26 to the inner peripheral side in the radial direction of the rotor 2 when viewed from the axial direction. In the position, it is configured to close the radially inner peripheral side of the rotor 2 of the ventilation hole 26.
  • the volume of the air flow passage 231 can be increased as compared with the case where the peripheral wall portion 233 is disposed in the vicinity of the inner peripheral side of the rotor 2 in the radial direction of the rotor 2. Air can be discharged more effectively.
  • the centrifugal fan 23 is formed by pressing the aluminum plate so that the top surface portion 232, the peripheral wall portion 233, the side wall portion 234, and the opening 235 are integrated. To be included. Thereby, unlike the case where the centrifugal fan 23 is comprised from several members, the number of parts which comprise the centrifugal fan 23 can be decreased.
  • the ventilation hole 26 is provided on the outer peripheral side from the central portion in the radial direction of the rotor core 21 when viewed from the axial direction.
  • the centrifugal fan 23 is attached to the rotor core 21 with the bolts 8 on the inner peripheral side of the rotor core 21 with respect to the ventilation holes 26 when viewed from the axial direction.
  • the centrifugal fan 23 is attached by the bolt 8 on the outer peripheral side (opening 235 side) of the rotor core 21 relative to the ventilation hole 26
  • the movement of the air in the air flow passage 231 is caused by the bolt 8. Since hindering is suppressed, the air of the ventilation hole 26 can be discharged
  • the air suction member 24 including the air flow passage 241 connected to the ventilation hole 26 is provided on the other side surface 21b in the axial direction of the rotor 2, and the air suction member 24 is provided.
  • the air around the rotor 2 is sucked to the vent hole 26 side through the air flow passage 241.
  • the air in the ventilation hole 26 is pushed out to the air flow passage 231 of the centrifugal fan 23 by the air sucked into the ventilation hole 26, the rotor 2 can be cooled more effectively.
  • the air suction member 24 is closed on the top surface portion 242 facing the other side surface 21b of the rotor 2 and the radially outer peripheral side of the other side surface 21b of the rotor 2.
  • the peripheral wall portion 243 and the side wall portion 244 that covers the circumferential side of the other side surface 21 b of the rotor 2 are configured to be included.
  • an air flow passage 241 is formed by a region surrounded by the top surface portion 242, the peripheral wall portion 243, and the side wall portion 244, and the air flow passage 241 has an opening at a portion near the inner peripheral portion of the other side surface 21b of the rotor 2.
  • a portion 245 is provided. Thereby, the air around the rotor 2 can be easily sucked to the ventilation hole 26 side via the air flow passage 241.
  • a plurality of openings 245 are provided along the circumferential direction of the rotor 2, and the circumferential length L4 of the plurality of openings 245 is set to the adjacent openings 245.
  • the side wall portion 244 located between the two is configured to be larger than the circumferential length L5.
  • the air suction member 24 is formed by pressing a metal plate-like member so that the top surface portion 242, the peripheral wall portion 243, the side wall portion 244, and the opening are opened. It forms so that the part 245 may be included integrally. Thereby, unlike the case where the air suction member 24 is composed of a plurality of members, the number of parts constituting the air suction member 24 can be reduced.
  • the vent hole 26 is provided for each magnetic pole formed by the permanent magnet 25 as described above. Thereby, the part of the rotor 2 corresponding to a magnetic pole with a large calorific value can be cooled effectively.
  • the ventilation holes 26 are arranged inside the permanent magnets 25 arranged in a substantially V-shape of each set. Thereby, the part of the rotor 2 corresponding to the inside of the permanent magnet 25 arranged in a substantially V shape having a large calorific value can be effectively cooled.
  • the centrifugal fan 33 (air suction member) 34) is formed of an iron plate-like plate-like member 331 (plate-like member 341) and a resin member 332 (resin member 342) made of a non-metallic material.
  • the centrifugal fan 33 is an example of an “air discharge member”.
  • a centrifugal fan 33 is disposed on one axial side surface 32b (arrow X2 direction side) of the rotor 31 (rotor core 32) and on the other side surface 32a (arrow X1 direction side).
  • An air suction member 34 is disposed.
  • the centrifugal fan 33 includes a plate member 331 made of iron (for example, a galvanized steel plate) and a nonmetallic material formed on the surface of the plate member 331. And a resin member 332 made of (for example, PPS (polyphenylene sulfide)).
  • the plate member 331 constitutes a top surface portion 333 that faces the one side surface 32b of the rotor 31.
  • the resin member 332 includes a peripheral wall portion 334 that closes the radially inner side of the one side surface 32b of the rotor 31, and a side wall portion 335 that closes the circumferential side of the one side surface 32b of the rotor 31. ing.
  • An opening 336 is provided on the outer periphery of the plate member 331 and the resin member 332.
  • An air flow passage 337 is formed by the top surface portion 333, the peripheral wall portion 334, the side wall portion 335, and the opening 336.
  • a plurality of (10 in the second embodiment) bolt insertion holes 338 into which the bolts 8 are inserted are provided so as to penetrate the plate-like member 331 and the resin member 332. As shown in FIG.
  • the plate-like member 331 is arranged in a state of being separated from the axial side surface (one side surface 32 b) of the rotor 31 by a distance d ⁇ b> 3.
  • the plate-shaped member 331 and the resin member 332 are examples of “first member” and “second member”, respectively.
  • the top surface portion 333 and the peripheral wall portion 334 are examples of the “first top surface portion” and the “first peripheral wall portion”, respectively.
  • the side wall portion 335 and the opening 336 are examples of the “first side wall portion” and the “first opening”, respectively.
  • the air flow passage 337 is an example of a “first air flow passage”.
  • the air suction member 34 includes a plate-like member 341 made of iron (for example, a galvanized steel plate) and a nonmetallic material formed on the surface of the plate-like member 341. And a resin member 342 made of (for example, PPS (polyphenylene sulfide)).
  • the plate-shaped member 341 forms a top surface portion 343 that faces the other side surface 32a of the rotor 31.
  • a peripheral wall portion 344 that closes a radially outer peripheral side of the other side surface 32a of the rotor 31 and a side wall portion 345 that closes a lateral side of the other side surface 32a of the rotor 31 by the resin member 342 are configured. Yes.
  • An opening 346 is provided in the inner periphery of the plate member 341 and the resin member 342. As shown in FIG. 12, the plate-like member 341 is arranged in a state of being separated from the axial side surface of the rotor 31 with a gap d4. In addition, an air flow passage 347 is formed by the top surface portion 343, the peripheral wall portion 344, the side wall portion 345, and the opening 346.
  • the air suction member 34 is fixed to the rotor core 32 with an adhesive, double-sided tape, bolts, or the like (not shown).
  • the plate-like member 341 and the resin member 342 are examples of “third member” and “fourth member”.
  • the top surface portion 343 and the peripheral wall portion 344 are examples of the “second top surface portion” and the “second peripheral wall portion”.
  • the side wall portion 345 and the opening 346 are examples of the “second side wall portion” and the “second opening”.
  • the air flow passage 347 is an example of a “second air flow passage”.
  • the centrifugal fan 33 is configured to include the iron plate member 331 and the resin member 332 made of a nonmetallic material formed on the surface of the plate member 331. . Further, the top surface portion 333 is configured by the plate-shaped member 331, the peripheral wall portion 334 and the side wall portion 335 are configured by the resin member 332, and the opening 336 is provided in the outer peripheral portion of the plate-shaped member 331 and the resin member 332. Thereby, the centrifugal fan 33 can be easily formed by the metal plate-like plate-like member 331 and the resin member 332 made of a non-magnetic member, for example, by insert molding.
  • the plate-like member 331 is disposed in a state of being spaced apart from the axial side surface of the rotor by a distance d3.
  • the leakage of magnetic flux from the rotor 31 (permanent magnet) to the load side (arrow X2 direction side) can be suppressed by the iron plate-like member 331, so that the generation of eddy currents due to the leakage magnetic flux is suppressed. can do.
  • the heat generation of the conductor portion of the rotating electrical machine 101 due to the eddy current can be suppressed.
  • the air suction member 34 includes the iron plate-like member 341 and the resin member 342 made of a nonmetallic material formed on the surface of the plate-like member 341.
  • the top surface portion 343 is configured by the plate-shaped member 341
  • the peripheral wall portion 344 and the side wall portion 345 are configured by the resin member 342
  • the opening 346 is provided in the inner peripheral portion of the plate-shaped member 341 and the resin member 342. .
  • the air suction member 34 can be easily formed by the iron plate-like member 341 and the resin member 342 made of a nonmetallic material, for example, by insert molding.
  • the plate-like member 341 is disposed in a state of being spaced apart from the axial side surface of the rotor by a distance d4.
  • both the centrifugal fan and the air suction member are provided in the rotor, but for example, only the centrifugal fan may be provided in the rotor.
  • the centrifugal fan is provided on the anti-load side (arrow X1 direction side) of the rotor and the air suction member is provided on the load side (arrow X2 direction side). While providing an air suction member on the anti-load side (arrow X1 direction side) of the rotor, a centrifugal fan may be provided on the load side (arrow X2 direction side). Similarly, in the second embodiment, the air suction member is provided on the anti-load side (arrow X1 direction side) of the rotor and the centrifugal fan is provided on the load side (arrow X2 direction side). A centrifugal fan may be provided on the anti-load side (arrow X1 direction side) of the rotor, and an air suction member may be provided on the load side (arrow X2 direction side).
  • the present invention is not limited to this.
  • the outer peripheral part of a centrifugal fan shows the example arrange
  • the outer peripheral portion of the centrifugal fan when viewed from the axial direction, it may be arranged so as to substantially coincide with the outer peripheral portion of the rotor core (that is, the diameter of the centrifugal fan and the diameter of the rotor core are
  • the outer peripheral part of the centrifugal fan may be arranged on the outer peripheral side (for example, about 1 mm) from the outer peripheral part of the rotor core when viewed from the axial direction (that is, the diameter of the centrifugal fan). May be larger than the diameter of the rotor core).
  • the circumferential length of the centrifugal fan opening is configured to be larger than the circumferential length of the side wall portion located between the adjacent openings.
  • the circumferential length of the openings may be equal to or less than the circumferential length of the side wall portion located between the adjacent openings.
  • the peripheral wall portion of the centrifugal fan is separated from the ventilation hole by a predetermined distance L3 (see FIG. 4) on the inner peripheral side in the radial direction of the rotor when viewed from the axial direction.
  • a predetermined distance L3 see FIG. 4
  • the peripheral wall portion of the centrifugal fan is disposed in the vicinity of the inner peripheral side in the radial direction of the rotor of the ventilation hole ( That is, the predetermined distance L3 may be disposed at a position where the predetermined distance L3 is substantially zero.
  • the example in which the ventilation hole is provided on the outer peripheral side with respect to the central portion in the radial direction of the rotor core when viewed from the axial direction has been described. You may provide in an inner peripheral side rather than the center part of the radial direction of a rotor core seeing from a direction.
  • the centrifugal fan was attached to the rotor core with the volt
  • the said 1st and 2nd embodiment it is comprised so that the length of the circumferential direction of the opening part of an air suction member may become larger than the circumferential direction length of the side wall part located between adjacent opening parts.
  • the circumferential length of the openings may be equal to or less than the circumferential length of the second side wall portion located between the adjacent openings.
  • the peripheral wall portion of the air suction member is separated by a predetermined distance L6 (see FIG. 5) from the ventilation hole to the outer peripheral side in the radial direction of the rotor as viewed from the axial direction.
  • the predetermined distance L6 may be disposed at a position substantially zero).
  • the ventilation holes are provided for each magnetic pole formed by the permanent magnet.
  • the ventilation holes may be provided more than the number of magnetic poles, or the magnetic poles may be provided. You may provide less than this number.
  • the ventilation hole is arranged in the embedded magnet synchronous motor.
  • the ventilation hole is arranged in a rotating electric machine such as a winding field synchronous motor, an induction motor, and a reluctance motor. May be.

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  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

This dynamo-electric machine (100) is provided with: a rotor (2) having formed therein air flow holes (26) penetrating through in the axial direction; and an air discharge member (23) disposed on one axial side face (21a) of the rotor and forming first air flow passages (231) connecting to the air flow holes. The air discharge member is formed so as to extend to the vicinity of the outer periphery of the rotor and is configured in such a manner that the first air flow passages are closed on both the side face side and the inner peripheral side radially and are open on the outer peripheral side.

Description

回転電機Rotating electric machine
 この発明は、回転電機に関し、特に、通風孔が設けられる回転子を備えた回転電機に関する。 The present invention relates to a rotating electrical machine, and more particularly, to a rotating electrical machine including a rotor provided with ventilation holes.
 従来、通風孔が設けられた回転電機が知られている。このような回転電機は、たとえば、特開2011-193628号公報に開示されている。 Conventionally, a rotating electrical machine provided with ventilation holes is known. Such a rotating electrical machine is disclosed in, for example, Japanese Patent Application Laid-Open No. 2011-193628.
 上記特開2011-193628号公報には、軸方向に沿って貫通する通風孔がフレームに設けられている回転電機が開示されている。この回転電機では、回転子が回転した際に回転電機内部の空気が移動することにより、回転電機が冷却されるように構成されている。 The above Japanese Patent Application Laid-Open No. 2011-193628 discloses a rotating electrical machine in which a ventilation hole penetrating along the axial direction is provided in a frame. This rotating electrical machine is configured such that when the rotor rotates, the air inside the rotating electrical machine moves to cool the rotating electrical machine.
特開2011-193628号公報JP 2011-193628 A
 しかしながら、回転子や回転子に設けられる永久磁石を通過する磁束の変化が大きい場合には、回転子鉄心や永久磁石などの導体内に渦電流が発生することに起因して、回転子の発熱が大きくなる場合がある。このため、回転子の冷却をより効果的に行うことが望まれている。 However, if the change in magnetic flux passing through the rotor or the permanent magnet provided on the rotor is large, eddy currents are generated in the conductor such as the rotor core or permanent magnet, and the heat generated by the rotor May become larger. For this reason, it is desired to cool the rotor more effectively.
 この発明は、上記のような課題を解決するためになされたものであり、この発明の1つの目的は、回転子の冷却をより効果的に行うことが可能な回転電機を提供することである。 The present invention has been made to solve the above-described problems, and one object of the present invention is to provide a rotating electrical machine capable of cooling the rotor more effectively. .
 第1の局面による回転電機は、軸方向に沿って貫通する通風孔が設けられる回転子と、回転子の軸方向の一方側面に配置され、通風孔と接続する第1空気流通路を形成する空気排出部材とを備え、空気排出部材は、回転子の外周部近傍まで延びるように形成されているとともに、第1空気流通路を半径方向内周側と側面方向には塞ぎ、外周側に開口するように構成されている。 The rotating electrical machine according to the first aspect includes a rotor provided with a ventilation hole penetrating along the axial direction, and a first air flow passage disposed on one side surface in the axial direction of the rotor and connected to the ventilation hole. The air discharge member is formed so as to extend to the vicinity of the outer peripheral portion of the rotor, and the first air flow passage is closed in the radial inner peripheral side and the lateral direction, and is opened on the outer peripheral side. Is configured to do.
 第1の局面による回転電機では、上記のように、通風孔と接続する第1空気流通路を含む空気排出部材を設けて、空気排出部材を、回転子とともに回転させることにより通風孔の空気を第1空気流通路を介して回転子の外側に向かって排出するように構成することによって、通風孔の空気が空気排出部材により強制的に排出されるので、通風孔のみを設ける場合に比べて、回転子の冷却をより効果的に行うことができる。また、空気排出部材を、回転子の外周部近傍まで延びるように形成することによって、第1空気流通路を介して回転子の外側に向かって排出される空気に働く遠心力が大きくなるので、通風孔の空気をより強い力で強制的に排出することができる。その結果、回転子の冷却を一層効果的に行うことができる。 In the rotating electrical machine according to the first aspect, as described above, the air discharge member including the first air flow passage connected to the ventilation hole is provided, and the air discharge member rotates the air discharge member together with the rotor to thereby remove the air in the ventilation hole. By configuring so as to exhaust toward the outside of the rotor through the first air flow passage, the air in the ventilation hole is forcibly exhausted by the air exhaust member, so compared with the case where only the ventilation hole is provided. The rotor can be cooled more effectively. Further, by forming the air discharge member so as to extend to the vicinity of the outer peripheral portion of the rotor, the centrifugal force acting on the air discharged toward the outside of the rotor through the first air flow passage is increased, The air in the vent hole can be forcibly discharged with a stronger force. As a result, the rotor can be cooled more effectively.
 第2の局面による回転電機は、軸方向に沿って貫通する通風孔が設けられる回転子と、回転子の軸方向の一方側面に配置され、通風孔と接続する空気流通路を設けた遠心ファンとを備え、遠心ファンは、回転子の外周部近傍まで延びるとともに、回転子とともに回転することにより通風孔の空気を空気流通路を介して回転子の外側に向かって排出するように構成されている。 The rotating electrical machine according to the second aspect is a centrifugal fan provided with a rotor provided with a ventilation hole penetrating along the axial direction, and an air flow passage disposed on one side surface of the rotor in the axial direction and connected to the ventilation hole. The centrifugal fan extends to the vicinity of the outer peripheral portion of the rotor, and is configured to discharge the air in the ventilation hole toward the outside of the rotor through the air flow passage by rotating with the rotor. Yes.
 第2の局面による回転電機では、上記のように、通風孔と接続する空気流通路を含む遠心ファンを設けて、遠心ファンを、回転子とともに回転させることにより通風孔の空気を空気流通路を介して回転子の外側に向かって排出するように構成することによって、通風孔の空気が遠心ファンにより強制的に排出されるので、通風孔のみを設ける場合に比べて、回転子の冷却をより効果的に行うことができる。また、遠心ファンを、回転子の外周部近傍まで延びるように形成することによって、空気流通路を介して回転子の外側に向かって排出される空気に働く遠心力が大きくなるので、通風孔の空気をより強い力で強制的に排出することができる。その結果、回転子の冷却を一層効果的に行うことができる。 In the rotating electrical machine according to the second aspect, as described above, the centrifugal fan including the air flow path connected to the ventilation hole is provided, and the centrifugal fan is rotated together with the rotor so that the air in the ventilation hole is changed to the air flow path. Since the air in the ventilation hole is forcibly exhausted by the centrifugal fan, the rotor is cooled more than the case where only the ventilation hole is provided. Can be done effectively. Further, by forming the centrifugal fan so as to extend to the vicinity of the outer peripheral portion of the rotor, the centrifugal force acting on the air discharged toward the outside of the rotor through the air flow passage is increased, so that the ventilation holes The air can be forcibly discharged with a stronger force. As a result, the rotor can be cooled more effectively.
 上記回転電機によれば、回転子の冷却をより効果的に行うことができる。 According to the rotating electric machine, the rotor can be cooled more effectively.
第1実施形態による回転電機の断面図である。It is sectional drawing of the rotary electric machine by 1st Embodiment. 第1実施形態による回転電機の回転子鉄心および固定子鉄心の正面図である。It is a front view of the rotor core and stator core of the rotary electric machine by 1st Embodiment. 第1実施形態による回転電機の回転子の斜視図である。It is a perspective view of the rotor of the rotary electric machine by 1st Embodiment. 第1実施形態による回転電機の回転子を遠心ファン側から見た正面図である。It is the front view which looked at the rotor of the rotary electric machine by 1st Embodiment from the centrifugal fan side. 第1実施形態による回転電機の回転子を空気吸引部材側から見た正面図である。It is the front view which looked at the rotor of the rotary electric machine by 1st Embodiment from the air suction member side. 第1実施形態による回転電機の遠心ファンの上面図である。It is a top view of the centrifugal fan of the rotating electrical machine according to the first embodiment. 第1実施形態による回転電機の遠心ファンの斜視図である。It is a perspective view of the centrifugal fan of the rotary electric machine by 1st Embodiment. 第1実施形態による回転電機の遠心ファンの側面図である。It is a side view of the centrifugal fan of the rotating electrical machine according to the first embodiment. 第1実施形態による回転電機の遠心ファンの拡大図である。It is an enlarged view of the centrifugal fan of the rotating electrical machine according to the first embodiment. 第1実施形態による回転電機の空気吸引部材の上面図である。It is a top view of the air suction member of the rotating electrical machine according to the first embodiment. 第1実施形態による回転電機の空気吸引部材の斜視図である。It is a perspective view of the air suction member of the rotary electric machine by 1st Embodiment. 第2実施形態による回転電機の回転子の断面図である。It is sectional drawing of the rotor of the rotary electric machine by 2nd Embodiment. 第2実施形態による回転電機の遠心ファンの斜視図である。It is a perspective view of the centrifugal fan of the rotary electric machine by 2nd Embodiment. 第2実施形態による回転電機の空気吸引部材の斜視図である。It is a perspective view of the air suction member of the rotary electric machine by 2nd Embodiment.
 以下、実施形態を図面に基づいて説明する。 Hereinafter, embodiments will be described with reference to the drawings.
 (第1実施形態)
 まず、図1~図11を参照して、第1実施形態による回転電機100の構成について説明する。
(First embodiment)
First, the configuration of the rotating electrical machine 100 according to the first embodiment will be described with reference to FIGS.
 図1に示すように、回転電機100は、固定子1と、回転子2と、フレーム3と、反負荷側ブラケット4と、負荷側ブラケット5と、エンコーダ部6とを備えている。固定子1と回転子2とは、互いに半径方向に対向するように配置されている。フレーム3は、固定子1の外周部を覆うように配置されている。反負荷側ブラケット4は、固定子1および回転子2の軸方向の一方側(矢印X1方向側、反負荷側)を覆うように設けられている。負荷側ブラケット5は、固定子1および回転子2の軸方向の他方側(矢印X2方向側、負荷側)を覆うように設けられている。 As shown in FIG. 1, the rotating electrical machine 100 includes a stator 1, a rotor 2, a frame 3, an anti-load side bracket 4, a load side bracket 5, and an encoder unit 6. The stator 1 and the rotor 2 are disposed so as to face each other in the radial direction. The frame 3 is disposed so as to cover the outer peripheral portion of the stator 1. The anti-load side bracket 4 is provided so as to cover one side of the stator 1 and the rotor 2 in the axial direction (arrow X1 direction side, anti-load side). The load side bracket 5 is provided so as to cover the other axial side of the stator 1 and the rotor 2 (arrow X2 direction side, load side).
 図1および図2に示すように、固定子1は、複数(第1実施形態では12個)のスロット12が設けられる固定子鉄心11と、スロット12に巻回されるコイル13とを含む。また、コイル13を覆うようにモールド樹脂14が設けられており、モールド樹脂14により、コイル13と、固定子鉄心11および負荷側ブラケット5との間が絶縁されている。また、コイル13の矢印X1方向側(反負荷側)には、コイル13を結線するための結線部15が設けられている。 1 and 2, the stator 1 includes a stator core 11 provided with a plurality of (12 in the first embodiment) slots 12 and a coil 13 wound around the slots 12. Further, a mold resin 14 is provided so as to cover the coil 13, and the coil 13 is insulated from the stator core 11 and the load side bracket 5 by the mold resin 14. In addition, a connection portion 15 for connecting the coil 13 is provided on the side of the coil 13 in the arrow X1 direction (on the opposite side of the load).
 図1~図3に示すように、回転子2は、回転子鉄心21と、回転軸22と、遠心ファン23と、空気吸引部材24とを含む。回転子鉄心21は、回転軸22に挿入されている。回転軸22は、負荷側軸受7aおよび反負荷側軸受7bによって支持されている。ここで、第1実施形態では、回転子2(回転子鉄心21)には、複数の永久磁石25が埋め込まれている。複数の永久磁石25は、軸方向から見て略V字形状に配置される複数組(第1実施形態では、10組)の永久磁石25からなる。また、回転子2(回転子鉄心21)には、軸方向に沿って貫通する複数(第1実施形態では、10個)の通風孔26が設けられている。そして、通風孔26は、永久磁石25により形成される磁極ごとに設けられている。具体的には、通風孔26は、略V字形状に配置される永久磁石25の内側に配置されている。また、通風孔26は、軸方向から見て、回転子鉄心21の半径方向の中央部(図2の点A)よりも外周側に設けられている。なお、遠心ファン23は、「空気排出部材」の一例である。 1 to 3, the rotor 2 includes a rotor core 21, a rotating shaft 22, a centrifugal fan 23, and an air suction member 24. The rotor core 21 is inserted into the rotation shaft 22. The rotating shaft 22 is supported by the load side bearing 7a and the anti-load side bearing 7b. Here, in the first embodiment, a plurality of permanent magnets 25 are embedded in the rotor 2 (rotor core 21). The plurality of permanent magnets 25 includes a plurality of sets (10 sets in the first embodiment) of permanent magnets 25 arranged in a substantially V shape when viewed from the axial direction. The rotor 2 (rotor core 21) is provided with a plurality of (10 in the first embodiment) ventilation holes 26 penetrating along the axial direction. The ventilation hole 26 is provided for each magnetic pole formed by the permanent magnet 25. Specifically, the ventilation hole 26 is arrange | positioned inside the permanent magnet 25 arrange | positioned at substantially V shape. Further, the ventilation hole 26 is provided on the outer peripheral side with respect to the central portion (point A in FIG. 2) in the radial direction of the rotor core 21 when viewed from the axial direction. The centrifugal fan 23 is an example of an “air discharge member”.
 また、第1実施形態では、図1に示すように、回転子2(回転子鉄心21)の軸方向(矢印X1方向側)の一方側面21aに遠心ファン23が配置されている。また、図1、図4および図6~図8に示すように、遠心ファン23は、通風孔26と接続する空気流通路231を含むように構成されている。そして、遠心ファン23は、回転子2(回転子鉄心21)の外周部近傍まで延びるように形成されているとともに、回転子2とともに回転することにより通風孔26の空気を空気流通路231を介して回転子2の外側に向かって排出するように構成されている。具体的には、遠心ファン23の外周部23a(図4参照)は、軸方向から見て、回転子鉄心21の外周部21cよりも内周側(たとえば約1mm程度)に配置されている。すなわち、遠心ファン23の直径は、回転子鉄心21の直径よりも小さい。なお、遠心ファン23は、回転子2とともに回転する際の遠心力によって、通風孔26の空気を吸い出して回転子2の外周部近傍から外側に排出するように構成されている。なお、空気流通路231は、「第1空気流通路」の一例である。 Further, in the first embodiment, as shown in FIG. 1, a centrifugal fan 23 is disposed on one side surface 21a in the axial direction (arrow X1 direction side) of the rotor 2 (rotor core 21). In addition, as shown in FIGS. 1, 4 and 6 to 8, the centrifugal fan 23 is configured to include an air flow passage 231 connected to the ventilation hole 26. The centrifugal fan 23 is formed so as to extend to the vicinity of the outer peripheral portion of the rotor 2 (rotor core 21), and rotates together with the rotor 2 so that the air in the ventilation hole 26 passes through the air flow passage 231. Thus, it is configured to discharge toward the outside of the rotor 2. Specifically, the outer peripheral portion 23a (see FIG. 4) of the centrifugal fan 23 is disposed on the inner peripheral side (for example, about 1 mm) from the outer peripheral portion 21c of the rotor core 21 when viewed from the axial direction. That is, the diameter of the centrifugal fan 23 is smaller than the diameter of the rotor core 21. The centrifugal fan 23 is configured to suck out the air in the ventilation holes 26 and discharge it from the vicinity of the outer peripheral portion of the rotor 2 to the outside by centrifugal force when rotating together with the rotor 2. The air flow passage 231 is an example of a “first air flow passage”.
 また、第1実施形態では、図4および図6~図9に示すように、遠心ファン23は、回転子2の一方側面21aに対向する天面部分232と、回転子2の一方側面21aにおける半径方向の内周側を塞ぐ周壁部分233と、回転子2の一方側面21aにおける周方向の側方側を塞ぐ側壁部分234とを含むように構成されている。そして、天面部分232、周壁部分233および側壁部分234(周方向の一方に配置される側壁部分234aおよび他方に配置される側壁部分234b、図9参照)により囲まれた領域により空気流通路231が形成されている。また、空気流通路231の回転子2の一方側面21aにおける外周部近傍の部分に開口部235が設けられている。なお、天面部分232は、回転子2の一方側面21aから間隔d1(図1参照)を隔てて離間した状態で配置されている。また、空気流通路231は、軸方向から見て、回転子2の外周方向に広がる略扇形状に形成されている。空気に作用する遠心力をより多く利用するためである。なお、天面部分232および周壁部分233(233a、233b)は、それぞれ、「第1天面部分」および「第1周壁部分」の一例である。また、側壁部分234および開口部235は、それぞれ、「第1側壁部分」および「第1開口部」の一例である。 In the first embodiment, as shown in FIGS. 4 and 6 to 9, the centrifugal fan 23 includes the top surface portion 232 facing the one side surface 21 a of the rotor 2 and the one side surface 21 a of the rotor 2. The peripheral wall portion 233 that closes the radially inner peripheral side and the side wall portion 234 that closes the lateral side of the one side surface 21a of the rotor 2 are included. The air flow passage 231 is formed by a region surrounded by the top surface portion 232, the peripheral wall portion 233, and the side wall portion 234 (the side wall portion 234a disposed on one side in the circumferential direction and the side wall portion 234b disposed on the other side, see FIG. 9). Is formed. In addition, an opening 235 is provided in the vicinity of the outer peripheral portion of the one side surface 21 a of the rotor 2 of the air flow passage 231. The top surface portion 232 is disposed in a state of being separated from the one side surface 21a of the rotor 2 by a distance d1 (see FIG. 1). Further, the air flow passage 231 is formed in a substantially fan shape that extends in the outer peripheral direction of the rotor 2 when viewed from the axial direction. This is because more centrifugal force acting on the air is used. The top surface portion 232 and the peripheral wall portions 233 (233a, 233b) are examples of the “first top surface portion” and the “first peripheral wall portion”, respectively. The side wall portion 234 and the opening 235 are examples of a “first side wall portion” and a “first opening”, respectively.
 また、第1実施形態では、通風孔26および空気流通路231は、回転子2の周方向に沿って複数(第1実施形態では、10個)設けられており、隣接する空気流通路231は、側壁部分234により分断されるように構成されている。また、開口部235は、回転子2の周方向に沿って複数(第1実施形態では、10個)設けられており、複数の開口部235の周方向の長さL1(図6参照)は、隣接する開口部235の間に位置する側壁部分234の周方向の長さL2よりも大きくなるように構成されている。 In the first embodiment, a plurality (10 in the first embodiment) of the air holes 26 and the air flow passages 231 are provided along the circumferential direction of the rotor 2, and the adjacent air flow passages 231 are provided. The side wall portion 234 is divided. A plurality of openings (235 in the first embodiment) are provided along the circumferential direction of the rotor 2, and the circumferential length L1 (see FIG. 6) of the plurality of openings 235 is provided. The side wall portion 234 located between the adjacent openings 235 is configured to be longer than the circumferential length L2.
 また、第1実施形態では、図4に示すように、遠心ファン23の周壁部分233は、軸方向から見て、通風孔26から、回転子2の半径方向の内周側(回転軸22側)に所定距離L3分離間した位置において、通風孔26の回転子2の半径方向の内周側を塞ぐように構成されている。 Further, in the first embodiment, as shown in FIG. 4, the peripheral wall portion 233 of the centrifugal fan 23 is seen from the vent hole 26 in the radial inner periphery side (rotation shaft 22 side) from the ventilation hole 26 as viewed from the axial direction. ) At a position separated by a predetermined distance L3, the inner peripheral side in the radial direction of the rotor 2 of the ventilation hole 26 is closed.
 また、第1実施形態では、図1および図6~図9に示すように、遠心ファン23は、非磁性金属製の板状の部材(たとえばアルミ板)をプレス加工することにより、天面部分232と、周壁部分233と、側壁部分234と、開口部235とを一体的に含むように形成されている。そして、天面部分232、周壁部分233および側壁部分234により囲まれた領域により形成される空気流通路231は、回転子2の矢印X1方向側(図1参照)に突出する凸状に形成される。また、遠心ファン23の空気流通路231を構成する部分以外の部分236は、矢印X2方向側に凹む凹状に形成される。また、遠心ファン23の空気流通路231を構成する部分以外の部分236には、ボルト8が挿入される複数(第1実施形態では、10個)のボルト挿入孔237が設けられている。そして、図4に示すように、遠心ファン23は、軸方向から見て、通風孔26よりも回転子鉄心21の内周側(空気流通路231を構成する部分以外の部分236)において、ボルト挿入孔237を介して挿入されるボルト8により回転子鉄心21に取り付けられている。 Further, in the first embodiment, as shown in FIGS. 1 and 6 to 9, the centrifugal fan 23 is formed by pressing a non-magnetic metal plate-like member (for example, an aluminum plate), so that the top surface portion 232, a peripheral wall portion 233, a side wall portion 234, and an opening 235 are integrally formed. The air flow passage 231 formed by the region surrounded by the top surface portion 232, the peripheral wall portion 233, and the side wall portion 234 is formed in a convex shape that protrudes in the direction of the arrow X1 of the rotor 2 (see FIG. 1). The Moreover, the part 236 other than the part which comprises the air flow path 231 of the centrifugal fan 23 is formed in the concave shape dented in the arrow X2 direction side. In addition, a plurality of (in the first embodiment, 10) bolt insertion holes 237 into which the bolts 8 are inserted are provided in a portion 236 other than the portion constituting the air flow passage 231 of the centrifugal fan 23. As shown in FIG. 4, the centrifugal fan 23 has a bolt on the inner peripheral side of the rotor core 21 (the portion 236 other than the portion constituting the air flow passage 231) with respect to the ventilation hole 26 as viewed from the axial direction. It is attached to the rotor core 21 by a bolt 8 inserted through the insertion hole 237.
 また、第1実施形態では、図1に示すように、回転子2(回転子鉄心21)の軸方向(矢印X2方向側)の他方側面21bに空気吸引部材24が配置されている。また、図1、図10および図11に示すように、空気吸引部材24は、通風孔26と接続する空気流通路241を含むように構成されている。また、空気吸引部材24は、回転子2とともに回転することにより回転子2の周囲の空気を空気流通路241を介して通風孔26側に吸引するように構成されている。なお、空気流通路241は、「第2空気流通路」の一例である。 In the first embodiment, as shown in FIG. 1, the air suction member 24 is disposed on the other side surface 21b in the axial direction (arrow X2 direction side) of the rotor 2 (rotor core 21). In addition, as shown in FIGS. 1, 10, and 11, the air suction member 24 is configured to include an air flow passage 241 connected to the ventilation hole 26. Further, the air suction member 24 is configured to suck the air around the rotor 2 toward the ventilation hole 26 via the air flow passage 241 by rotating together with the rotor 2. The air flow passage 241 is an example of a “second air flow passage”.
 また、第1実施形態では、図10および図11に示すように、空気吸引部材24は、回転子2の他方側面21bに対向する天面部分242と、回転子2の他方側面21bにおける半径方向の外周側を塞ぐ周壁部分243と、回転子2の他方側面21bにおける周方向の側方側を塞ぐ側壁部分244とを含むように構成されている。そして、天面部分242、周壁部分243および側壁部分244(周方向の一方に配置される側壁部分244aおよび他方に配置される側壁部分244b)により囲まれた領域により空気流通路241が形成されている。また、空気流通路241の回転子2の他方側面21bにおける内周部近傍の部分に開口部245が設けられている。また、空気流通路241は、軸方向から見て、略矩形形状に形成されている。なお、天面部分242および周壁部分243は、それぞれ、「第2天面部分」および「第2周壁部分」の一例である。また、側壁部分244(244a、244b)および開口部245は、それぞれ、「第2側壁部分」および「第2開口部」の一例である。 In the first embodiment, as shown in FIGS. 10 and 11, the air suction member 24 includes a top surface portion 242 facing the other side surface 21 b of the rotor 2 and a radial direction on the other side surface 21 b of the rotor 2. The peripheral wall portion 243 that closes the outer peripheral side of the rotor 2 and the side wall portion 244 that closes the side in the circumferential direction of the other side surface 21b of the rotor 2 are included. An air flow passage 241 is formed by a region surrounded by the top surface portion 242, the peripheral wall portion 243, and the side wall portion 244 (the side wall portion 244a disposed on one side in the circumferential direction and the side wall portion 244b disposed on the other side). Yes. In addition, an opening 245 is provided in the vicinity of the inner peripheral portion of the other side surface 21 b of the rotor 2 of the air flow passage 241. Further, the air flow passage 241 is formed in a substantially rectangular shape when viewed from the axial direction. The top surface portion 242 and the peripheral wall portion 243 are examples of the “second top surface portion” and the “second peripheral wall portion”, respectively. The side wall portions 244 (244a, 244b) and the opening 245 are examples of the “second side wall portion” and the “second opening”, respectively.
 また、第1実施形態では、開口部245は、回転子2の周方向に沿って複数(第1実施形態では、10個)設けられており、複数の開口部245の周方向の長さL4(図10参照)は、隣接する開口部245の間に位置する側壁部分244の周方向の長さL5よりも大きくなるように構成されている。また、周壁部分243は、軸方向から見て、通風孔26から、回転子2の半径方向の外周側に所定距離L6(図5参照)分離間した位置において、通風孔26の回転子2の半径方向の外周側を塞ぐように構成されている。 In the first embodiment, a plurality of openings (245 in the first embodiment) are provided along the circumferential direction of the rotor 2, and the circumferential length L4 of the plurality of openings 245 is provided. (Refer to FIG. 10) is configured to be larger than the circumferential length L5 of the side wall portion 244 located between the adjacent openings 245. In addition, the peripheral wall portion 243 is separated from the ventilation hole 26 by a predetermined distance L6 (see FIG. 5) on the outer peripheral side in the radial direction of the rotor 2 when viewed from the axial direction. It is comprised so that the outer peripheral side of a radial direction may be plugged up.
 また、空気吸引部材24は、金属製の板状の部材(たとえばアルミ板金)をプレス加工することにより、天面部分242と、周壁部分243と、側壁部分244と、開口部245とを一体的に含むように形成されている。また、空気吸引部材24は、図示しない接着材、両面テープまたはボルトなどにより、回転子鉄心21に固定されている。 The air suction member 24 is formed by pressing a metal plate-like member (for example, aluminum sheet metal) so that the top surface portion 242, the peripheral wall portion 243, the side wall portion 244, and the opening 245 are integrated. It is formed to include. The air suction member 24 is fixed to the rotor core 21 with an adhesive, a double-sided tape or a bolt (not shown).
 次に、図1を参照して、第1実施形態による回転電機100内の空気の流れについて説明する。 Next, the flow of air in the rotating electrical machine 100 according to the first embodiment will be described with reference to FIG.
 回転子2が回転することにより、遠心ファン23および空気吸引部材24は、回転子2(回転子鉄心21)とともに回転する。これにより、遠心ファン23が回転する際の遠心力によって、通風孔26の空気が空気流通路231を介して吸い出されて回転子2の外周部近傍から外側に排出(図1の空気の流れ、参照)される。また、空気吸引部材24が回転子2とともに回転することにより、回転子2の周囲の空気が空気流通路241を介して通風孔26側に吸引される。その結果、遠心ファン23から排出された空気が、回転子鉄心21と固定子鉄心11との間の隙間を矢印X2方向側(負荷側)に移動した後に、空気吸引部材24により吸引されるように還流する。これにより、回転子2(回転子鉄心21)が冷却される。 As the rotor 2 rotates, the centrifugal fan 23 and the air suction member 24 rotate together with the rotor 2 (rotor core 21). As a result, the centrifugal force generated when the centrifugal fan 23 rotates causes the air in the ventilation hole 26 to be sucked out through the air flow passage 231 and discharged from the vicinity of the outer peripheral portion of the rotor 2 to the outside (air flow in FIG. 1). ). Further, when the air suction member 24 rotates together with the rotor 2, the air around the rotor 2 is sucked to the ventilation hole 26 side through the air flow passage 241. As a result, the air discharged from the centrifugal fan 23 is sucked by the air suction member 24 after moving to the arrow X2 direction side (load side) through the gap between the rotor core 21 and the stator core 11. To reflux. Thereby, the rotor 2 (rotor core 21) is cooled.
 第1実施形態では、上記のように、通風孔26と接続する空気流通路231を含む遠心ファン23を設けて、遠心ファン23を、回転子2とともに回転させることにより通風孔26の空気を空気流通路231を介して回転子2の外側に向かって排出するように構成する。これにより、通風孔26の空気が遠心ファン23により強制的に排出されるので、通風孔26のみを設ける場合に比べて、回転子2の冷却をより効果的に行うことができる。また、遠心ファン23を、回転子2の外周部近傍まで延びるように形成することによって、空気流通路231を介して回転子2の外側に向かって排出される空気に働く遠心力が大きくなるので、通風孔26の空気をより強い力で強制的に排出することができる。その結果、回転子2の冷却を一層効果的に行うことができる。 In the first embodiment, as described above, the centrifugal fan 23 including the air flow passage 231 connected to the ventilation hole 26 is provided, and the centrifugal fan 23 is rotated together with the rotor 2 so that the air in the ventilation hole 26 is air. It is configured to discharge toward the outside of the rotor 2 through the flow passage 231. Thereby, since the air of the ventilation hole 26 is forcedly discharged | emitted by the centrifugal fan 23, compared with the case where only the ventilation hole 26 is provided, the rotor 2 can be cooled more effectively. Further, by forming the centrifugal fan 23 so as to extend to the vicinity of the outer peripheral portion of the rotor 2, the centrifugal force acting on the air discharged toward the outside of the rotor 2 through the air flow passage 231 increases. The air in the ventilation hole 26 can be forcibly discharged with a stronger force. As a result, the rotor 2 can be cooled more effectively.
 また、第1実施形態では、上記のように、遠心ファン23を、回転子2とともに回転する際の遠心力によって、通風孔26の空気を吸い出して回転子2の外周部近傍から外側に排出するように構成する。これにより、容易に、遠心ファン23により通風孔26の空気を吸い出して、回転子2の冷却を行うことができる。 In the first embodiment, as described above, the centrifugal fan 23 sucks out the air in the ventilation holes 26 by the centrifugal force when rotating together with the rotor 2 and discharges the air from the vicinity of the outer periphery of the rotor 2 to the outside. Configure as follows. Thereby, the rotor 2 can be easily cooled by sucking out the air in the ventilation hole 26 by the centrifugal fan 23.
 また、第1実施形態では、上記のように、遠心ファン23を、回転子2の一方側面21aに対向する天面部分232と、回転子2の一方側面21aにおける半径方向の内周側を塞ぐ周壁部分233と、回転子2の一方側面21aにおける周方向の側方側を塞ぐ側壁部分234とを含むように構成する。また、天面部分232、周壁部分233および側壁部分234により囲まれた領域により空気流通路231を形成するとともに、空気流通路231の回転子2の一方側面21aにおける外周部近傍の部分に開口部235を設ける。これにより、通風孔26の空気を、空気流通路231を介して開口部235から容易に排出することができる。 In the first embodiment, as described above, the centrifugal fan 23 is closed on the top surface portion 232 facing the one side surface 21 a of the rotor 2 and the radially inner peripheral side of the one side surface 21 a of the rotor 2. The peripheral wall portion 233 and the side wall portion 234 that covers the circumferential side of the one side surface 21a of the rotor 2 are configured to be included. In addition, an air flow passage 231 is formed by a region surrounded by the top surface portion 232, the peripheral wall portion 233, and the side wall portion 234, and an opening is formed in a portion near the outer peripheral portion of the one side surface 21a of the rotor 2 of the air flow passage 231. 235 is provided. Thereby, the air of the ventilation hole 26 can be easily discharged | emitted from the opening part 235 via the airflow path 231. FIG.
 また、第1実施形態では、上記のように、通風孔26および空気流通路231を、回転子2の周方向に沿って複数設けて、隣接する空気流通路231を、側壁部分234により分断されるように構成する。これにより、空気流通路231内の空気が、側壁部分234によって開口部235側に移動されるので、通風孔26の空気を効果的に排出することができる。 In the first embodiment, as described above, a plurality of ventilation holes 26 and air flow passages 231 are provided along the circumferential direction of the rotor 2, and the adjacent air flow passages 231 are divided by the side wall portions 234. Configure as follows. Thereby, since the air in the air flow passage 231 is moved to the opening 235 side by the side wall portion 234, the air in the ventilation hole 26 can be effectively discharged.
 また、第1実施形態では、上記のように、開口部235を、回転子2の周方向に沿って複数設けて、複数の開口部235の周方向の長さL1を、隣接する開口部235の間に位置する側壁部分234の周方向の長さL2よりも大きくなるように構成する。これにより、空気流通路231の容積を大きくすることができるので、空気に作用する遠心力をより多く利用できるようになり、通風孔26の空気をより効果的に排出することができる。 In the first embodiment, as described above, a plurality of openings 235 are provided along the circumferential direction of the rotor 2, and the circumferential length L1 of the plurality of openings 235 is set to the adjacent openings 235. The side wall portion 234 located between the two is configured to be larger than the circumferential length L2. Thereby, since the volume of the air flow passage 231 can be increased, more centrifugal force acting on the air can be used, and the air in the ventilation hole 26 can be discharged more effectively.
 また、第1実施形態では、上記のように、遠心ファン23の周壁部分233を、軸方向から見て、通風孔26から、回転子2の半径方向の内周側に所定距離L3分離間した位置において、通風孔26の回転子2の半径方向の内周側を塞ぐように構成する。これにより、周壁部分233が通風孔26の回転子2の半径方向の内周側近傍に配置される場合と比べて、空気流通路231の容積をより大きくすることができるので、通風孔26の空気をさらに効果的に排出することができる。 In the first embodiment, as described above, the peripheral wall portion 233 of the centrifugal fan 23 is separated by a predetermined distance L3 from the ventilation hole 26 to the inner peripheral side in the radial direction of the rotor 2 when viewed from the axial direction. In the position, it is configured to close the radially inner peripheral side of the rotor 2 of the ventilation hole 26. As a result, the volume of the air flow passage 231 can be increased as compared with the case where the peripheral wall portion 233 is disposed in the vicinity of the inner peripheral side of the rotor 2 in the radial direction of the rotor 2. Air can be discharged more effectively.
 また、第1実施形態では、上記のように、遠心ファン23を、アルミ板をプレス加工することにより、天面部分232と、周壁部分233と、側壁部分234と、開口部235とを一体的に含むように形成する。これにより、遠心ファン23を複数の部材から構成する場合と異なり、遠心ファン23を構成する部品点数を少なくすることができる。 In the first embodiment, as described above, the centrifugal fan 23 is formed by pressing the aluminum plate so that the top surface portion 232, the peripheral wall portion 233, the side wall portion 234, and the opening 235 are integrated. To be included. Thereby, unlike the case where the centrifugal fan 23 is comprised from several members, the number of parts which comprise the centrifugal fan 23 can be decreased.
 また、第1実施形態では、上記のように、通風孔26を、軸方向から見て、回転子鉄心21の半径方向の中央部よりも外周側に設ける。これにより、通風孔26を回転子鉄心21の半径方向の中央部よりも内周側に設ける場合と比べて、通風孔26の数を増やすことができるので、回転子2の冷却をさらに効果的に行うことができる。 Further, in the first embodiment, as described above, the ventilation hole 26 is provided on the outer peripheral side from the central portion in the radial direction of the rotor core 21 when viewed from the axial direction. Thereby, compared with the case where the ventilation hole 26 is provided in the inner peripheral side rather than the center part of the radial direction of the rotor core 21, since the number of the ventilation holes 26 can be increased, cooling of the rotor 2 is further effective. Can be done.
 また、第1実施形態では、上記のように、遠心ファン23を、軸方向から見て、通風孔26よりも回転子鉄心21の内周側においてボルト8により回転子鉄心21に取り付ける。これにより、遠心ファン23が通風孔26よりも回転子鉄心21の外周側(開口部235側)においてボルト8により取り付けられている場合と異なり、空気流通路231内の空気の移動がボルト8によって妨げられるのが抑制されるので、通風孔26の空気をスムーズに排出することができる。 In the first embodiment, as described above, the centrifugal fan 23 is attached to the rotor core 21 with the bolts 8 on the inner peripheral side of the rotor core 21 with respect to the ventilation holes 26 when viewed from the axial direction. Thus, unlike the case where the centrifugal fan 23 is attached by the bolt 8 on the outer peripheral side (opening 235 side) of the rotor core 21 relative to the ventilation hole 26, the movement of the air in the air flow passage 231 is caused by the bolt 8. Since hindering is suppressed, the air of the ventilation hole 26 can be discharged | emitted smoothly.
 また、第1実施形態では、上記のように、回転子2の軸方向の他方側面21bに、通風孔26と接続する空気流通路241を含む空気吸引部材24を設けて、空気吸引部材24を、回転子2とともに回転することにより回転子2の周囲の空気を空気流通路241を介して通風孔26側に吸引するように構成する。これにより、通風孔26に吸引された空気によって通風孔26内の空気が遠心ファン23の空気流通路231に押し出されるので、回転子2の冷却をより効果的に行うことができる。 Further, in the first embodiment, as described above, the air suction member 24 including the air flow passage 241 connected to the ventilation hole 26 is provided on the other side surface 21b in the axial direction of the rotor 2, and the air suction member 24 is provided. By rotating together with the rotor 2, the air around the rotor 2 is sucked to the vent hole 26 side through the air flow passage 241. Thereby, since the air in the ventilation hole 26 is pushed out to the air flow passage 231 of the centrifugal fan 23 by the air sucked into the ventilation hole 26, the rotor 2 can be cooled more effectively.
 また、第1実施形態では、上記のように、空気吸引部材24を、回転子2の他方側面21bに対向する天面部分242と、回転子2の他方側面21bにおける半径方向の外周側を塞ぐ周壁部分243と、回転子2の他方側面21bにおける周方向の側方側を塞ぐ側壁部分244とを含むように構成する。また、天面部分242、周壁部分243および側壁部分244により囲まれた領域により空気流通路241を形成するとともに、空気流通路241の回転子2の他方側面21bにおける内周部近傍の部分に開口部245を設ける。これにより、容易に、回転子2の周囲の空気を空気流通路241を介して通風孔26側に吸引することができる。 In the first embodiment, as described above, the air suction member 24 is closed on the top surface portion 242 facing the other side surface 21b of the rotor 2 and the radially outer peripheral side of the other side surface 21b of the rotor 2. The peripheral wall portion 243 and the side wall portion 244 that covers the circumferential side of the other side surface 21 b of the rotor 2 are configured to be included. In addition, an air flow passage 241 is formed by a region surrounded by the top surface portion 242, the peripheral wall portion 243, and the side wall portion 244, and the air flow passage 241 has an opening at a portion near the inner peripheral portion of the other side surface 21b of the rotor 2. A portion 245 is provided. Thereby, the air around the rotor 2 can be easily sucked to the ventilation hole 26 side via the air flow passage 241.
 また、第1実施形態では、上記のように、開口部245を、回転子2の周方向に沿って複数設けて、複数の開口部245の周方向の長さL4を、隣接する開口部245の間に位置する側壁部分244の周方向の長さL5よりも大きくなるように構成する。これにより、空気流通路241の容積を大きくすることができるので、回転子2の周囲の空気を空気流通路241を介して通風孔26側に効果的に吸引することができる。 Further, in the first embodiment, as described above, a plurality of openings 245 are provided along the circumferential direction of the rotor 2, and the circumferential length L4 of the plurality of openings 245 is set to the adjacent openings 245. The side wall portion 244 located between the two is configured to be larger than the circumferential length L5. Thereby, since the volume of the air flow passage 241 can be increased, the air around the rotor 2 can be effectively sucked to the vent hole 26 side through the air flow passage 241.
 また、第1実施形態では、上記のように、空気吸引部材24を、金属製の板状の部材をプレス加工することにより、天面部分242と、周壁部分243と、側壁部分244と、開口部245とを一体的に含むように形成する。これにより、空気吸引部材24を複数の部材から構成する場合と異なり、空気吸引部材24を構成する部品点数を少なくすることができる。 In the first embodiment, as described above, the air suction member 24 is formed by pressing a metal plate-like member so that the top surface portion 242, the peripheral wall portion 243, the side wall portion 244, and the opening are opened. It forms so that the part 245 may be included integrally. Thereby, unlike the case where the air suction member 24 is composed of a plurality of members, the number of parts constituting the air suction member 24 can be reduced.
 また、第1実施形態では、上記のように、通風孔26を、永久磁石25により形成される磁極ごとに設ける。これにより、発熱量が大きい磁極に対応する回転子2の部分を効果的に冷却することができる。 In the first embodiment, the vent hole 26 is provided for each magnetic pole formed by the permanent magnet 25 as described above. Thereby, the part of the rotor 2 corresponding to a magnetic pole with a large calorific value can be cooled effectively.
 また、第1実施形態では、上記のように、通風孔26を、各組の略V字形状に配置される永久磁石25の内側に配置する。これにより、発熱量が大きい略V字形状に配置される永久磁石25の内側に対応する回転子2の部分を効果的に冷却することができる。 Further, in the first embodiment, as described above, the ventilation holes 26 are arranged inside the permanent magnets 25 arranged in a substantially V-shape of each set. Thereby, the part of the rotor 2 corresponding to the inside of the permanent magnet 25 arranged in a substantially V shape having a large calorific value can be effectively cooled.
 (第2実施形態)
 次に、図12~図14を参照して、第2実施形態による回転電機101の構成について説明する。この第2実施形態では、非磁性金属製の板状の部材をプレス加工することにより遠心ファン23および空気吸引部材24が形成されていた上記第1実施形態と異なり、遠心ファン33(空気吸引部材34)が鉄製の板状の板状部材331(板状部材341)と非金属材からなる樹脂部材332(樹脂部材342)により形成されている。なお、遠心ファン33は、「空気排出部材」の一例である。
(Second Embodiment)
Next, the configuration of the rotating electrical machine 101 according to the second embodiment will be described with reference to FIGS. In the second embodiment, unlike the first embodiment in which the centrifugal fan 23 and the air suction member 24 are formed by pressing a plate-like member made of nonmagnetic metal, the centrifugal fan 33 (air suction member) 34) is formed of an iron plate-like plate-like member 331 (plate-like member 341) and a resin member 332 (resin member 342) made of a non-metallic material. The centrifugal fan 33 is an example of an “air discharge member”.
 図12に示すように、回転子31(回転子鉄心32)の軸方向の一方側面32b(矢印X2方向側)に遠心ファン33が配置されているとともに、他方側面32a(矢印X1方向側)に空気吸引部材34が配置されている。ここで、第2実施形態では、図13に示すように、遠心ファン33は、鉄製(たとえば亜鉛メッキ鋼板など)の板状部材331と、板状部材331の表面上に形成された非金属材(たとえばPPS(ポリフェニレンサルファイド)など)からなる樹脂部材332とを含むように構成されている。そして、板状部材331により回転子31の一方側面32bに対向する天面部分333が構成されている。また、樹脂部材332により回転子31の一方側面32bにおける半径方向の内周側を塞ぐ周壁部分334と、回転子31の一方側面32bにおける周方向の側方側を塞ぐ側壁部分335とが構成されている。そして、板状部材331と樹脂部材332との外周部に開口部336が設けられている。また、天面部分333、周壁部分334、側壁部分335および開口部336により、空気流通路337が形成されている。また、板状部材331および樹脂部材332を貫通するように、ボルト8が挿入される複数(第2実施形態では、10個)のボルト挿入孔338が設けられている。また、図12に示すように、板状部材331は、回転子31の軸方向の側面(一方側面32b)から間隔d3を隔てて離間した状態で配置されている。なお、板状部材331および樹脂部材332は、それぞれ、「第1部材」および「第2部材」の一例である。また、天面部分333および周壁部分334は、それぞれ、「第1天面部分」および「第1周壁部分」の一例である。また、側壁部分335および開口部336は、それぞれ、「第1側壁部分」および「第1開口部」の一例である。また、空気流通路337は、「第1空気流通路」の一例である。 As shown in FIG. 12, a centrifugal fan 33 is disposed on one axial side surface 32b (arrow X2 direction side) of the rotor 31 (rotor core 32) and on the other side surface 32a (arrow X1 direction side). An air suction member 34 is disposed. Here, in the second embodiment, as shown in FIG. 13, the centrifugal fan 33 includes a plate member 331 made of iron (for example, a galvanized steel plate) and a nonmetallic material formed on the surface of the plate member 331. And a resin member 332 made of (for example, PPS (polyphenylene sulfide)). The plate member 331 constitutes a top surface portion 333 that faces the one side surface 32b of the rotor 31. The resin member 332 includes a peripheral wall portion 334 that closes the radially inner side of the one side surface 32b of the rotor 31, and a side wall portion 335 that closes the circumferential side of the one side surface 32b of the rotor 31. ing. An opening 336 is provided on the outer periphery of the plate member 331 and the resin member 332. An air flow passage 337 is formed by the top surface portion 333, the peripheral wall portion 334, the side wall portion 335, and the opening 336. Further, a plurality of (10 in the second embodiment) bolt insertion holes 338 into which the bolts 8 are inserted are provided so as to penetrate the plate-like member 331 and the resin member 332. As shown in FIG. 12, the plate-like member 331 is arranged in a state of being separated from the axial side surface (one side surface 32 b) of the rotor 31 by a distance d <b> 3. The plate-shaped member 331 and the resin member 332 are examples of “first member” and “second member”, respectively. The top surface portion 333 and the peripheral wall portion 334 are examples of the “first top surface portion” and the “first peripheral wall portion”, respectively. The side wall portion 335 and the opening 336 are examples of the “first side wall portion” and the “first opening”, respectively. The air flow passage 337 is an example of a “first air flow passage”.
 また、第2実施形態では、図14に示すように、空気吸引部材34は、鉄製(たとえば亜鉛メッキ鋼板など)の板状部材341と、板状部材341の表面上に形成された非金属材(たとえばPPS(ポリフェニレンサルファイド)など)からなる樹脂部材342とを含むように構成されている。そして、板状部材341により回転子31の他方側面32aに対向する天面部分343が構成されている。また、樹脂部材342により回転子31の他方側面32aにおける半径方向の外周側を塞ぐ周壁部分344と、回転子31の他方側面32aにおける周方向の側方側を塞ぐ側壁部分345とが構成されている。そして、板状部材341と樹脂部材342との内周部に開口部346が設けられている。また、図12に示すように、板状部材341は、回転子31の軸方向の側面から間隔d4を隔てて離間した状態で配置されている。また、天面部分343、周壁部分344、側壁部分345および開口部346により、空気流通路347が形成されている。また、空気吸引部材34は、図示しない接着材、両面テープまたはボルトなどにより、回転子鉄心32に固定されている。なお、板状部材341および樹脂部材342は、「第3部材」および「第4部材」の一例である。また、天面部分343および周壁部分344は、「第2天面部分」および「第2周壁部分」の一例である。また、側壁部分345および開口部346は、「第2側壁部分」および「第2開口部」の一例である。また、空気流通路347は、「第2空気流通路」の一例である。 In the second embodiment, as shown in FIG. 14, the air suction member 34 includes a plate-like member 341 made of iron (for example, a galvanized steel plate) and a nonmetallic material formed on the surface of the plate-like member 341. And a resin member 342 made of (for example, PPS (polyphenylene sulfide)). The plate-shaped member 341 forms a top surface portion 343 that faces the other side surface 32a of the rotor 31. Further, a peripheral wall portion 344 that closes a radially outer peripheral side of the other side surface 32a of the rotor 31 and a side wall portion 345 that closes a lateral side of the other side surface 32a of the rotor 31 by the resin member 342 are configured. Yes. An opening 346 is provided in the inner periphery of the plate member 341 and the resin member 342. As shown in FIG. 12, the plate-like member 341 is arranged in a state of being separated from the axial side surface of the rotor 31 with a gap d4. In addition, an air flow passage 347 is formed by the top surface portion 343, the peripheral wall portion 344, the side wall portion 345, and the opening 346. The air suction member 34 is fixed to the rotor core 32 with an adhesive, double-sided tape, bolts, or the like (not shown). The plate-like member 341 and the resin member 342 are examples of “third member” and “fourth member”. The top surface portion 343 and the peripheral wall portion 344 are examples of the “second top surface portion” and the “second peripheral wall portion”. The side wall portion 345 and the opening 346 are examples of the “second side wall portion” and the “second opening”. The air flow passage 347 is an example of a “second air flow passage”.
 なお、第2実施形態のその他の構成は、上記第1実施形態と同様である。 In addition, the other structure of 2nd Embodiment is the same as that of the said 1st Embodiment.
 次に、図12を参照して、第2実施形態による回転電機101内の空気の流れについて説明する。 Next, the flow of air in the rotating electrical machine 101 according to the second embodiment will be described with reference to FIG.
 回転子31(回転子鉄心32)が回転することにより、遠心ファン33および空気吸引部材34は、回転子31とともに回転する。これにより、空気吸引部材34が回転子31とともに回転することにより、回転子31の周囲の空気が空気流通路347を介して通風孔35側に吸引される。また、遠心ファン33が回転する際の遠心力によって、通風孔35の空気が空気流通路337を介して吸い出されて回転子31の外周部近傍から外側に排出される。その結果、回転子31(回転子鉄心32)が冷却される。 When the rotor 31 (rotor core 32) rotates, the centrifugal fan 33 and the air suction member 34 rotate together with the rotor 31. As a result, the air suction member 34 rotates together with the rotor 31, so that the air around the rotor 31 is sucked to the ventilation hole 35 side via the air flow passage 347. Further, the centrifugal force generated when the centrifugal fan 33 rotates causes the air in the ventilation hole 35 to be sucked out through the air flow passage 337 and discharged from the vicinity of the outer peripheral portion of the rotor 31 to the outside. As a result, the rotor 31 (rotor core 32) is cooled.
 第2実施形態では、上記のように、遠心ファン33を、鉄製の板状部材331と、板状部材331の表面上に形成された非金属材からなる樹脂部材332とを含むように構成する。また、板状部材331により天面部分333を構成し、樹脂部材332により周壁部分334と側壁部分335とを構成し、板状部材331と樹脂部材332との外周部に開口部336を設ける。これにより、たとえばインサート成型により、容易に、金属製の板状の板状部材331と非磁性部材からなる樹脂部材332とにより遠心ファン33を形成することができる。 In the second embodiment, as described above, the centrifugal fan 33 is configured to include the iron plate member 331 and the resin member 332 made of a nonmetallic material formed on the surface of the plate member 331. . Further, the top surface portion 333 is configured by the plate-shaped member 331, the peripheral wall portion 334 and the side wall portion 335 are configured by the resin member 332, and the opening 336 is provided in the outer peripheral portion of the plate-shaped member 331 and the resin member 332. Thereby, the centrifugal fan 33 can be easily formed by the metal plate-like plate-like member 331 and the resin member 332 made of a non-magnetic member, for example, by insert molding.
 また、第2実施形態では、上記のように、板状部材331を、回転子の軸方向の側面から間隔d3を隔てて離間した状態で配置する。これにより、回転子31(永久磁石)から負荷側(矢印X2方向側)に磁束が漏れるのを鉄製の板状部材331により抑制することができるので、漏れ磁束に起因する渦電流の発生を抑制することができる。その結果、渦電流に起因する回転電機101の導体部分の発熱を抑制することができる。 In the second embodiment, as described above, the plate-like member 331 is disposed in a state of being spaced apart from the axial side surface of the rotor by a distance d3. Thus, the leakage of magnetic flux from the rotor 31 (permanent magnet) to the load side (arrow X2 direction side) can be suppressed by the iron plate-like member 331, so that the generation of eddy currents due to the leakage magnetic flux is suppressed. can do. As a result, the heat generation of the conductor portion of the rotating electrical machine 101 due to the eddy current can be suppressed.
 また、第2実施形態では、上記のように、空気吸引部材34を、鉄製の板状部材341と、板状部材341の表面上に形成された非金属材からなる樹脂部材342とを含むように構成する。また、板状部材341により天面部分343を構成し、樹脂部材342により周壁部分344と側壁部分345とを構成し、板状部材341と樹脂部材342との内周部に開口部346を設ける。これにより、たとえばインサート成型により、容易に、鉄製の板状部材341と非金属材からなる樹脂部材342とにより空気吸引部材34を形成することができる。 In the second embodiment, as described above, the air suction member 34 includes the iron plate-like member 341 and the resin member 342 made of a nonmetallic material formed on the surface of the plate-like member 341. Configure. Further, the top surface portion 343 is configured by the plate-shaped member 341, the peripheral wall portion 344 and the side wall portion 345 are configured by the resin member 342, and the opening 346 is provided in the inner peripheral portion of the plate-shaped member 341 and the resin member 342. . Thereby, the air suction member 34 can be easily formed by the iron plate-like member 341 and the resin member 342 made of a nonmetallic material, for example, by insert molding.
 また、第2実施形態では、上記のように、板状部材341を、回転子の軸方向の側面から間隔d4を隔てて離間した状態で配置する。これにより、回転子31(永久磁石)から反負荷側(矢印X1方向側)に磁束が漏れるのを鉄製の板状部材341により抑制することができるので、漏れ磁束に起因する渦電流の発生を抑制することができる。その結果、渦電流に起因する回転電機101の導体部分の発熱を抑制することができる。 In the second embodiment, as described above, the plate-like member 341 is disposed in a state of being spaced apart from the axial side surface of the rotor by a distance d4. Thereby, since it is possible to suppress the magnetic flux from leaking from the rotor 31 (permanent magnet) to the anti-load side (arrow X1 direction side) by the iron plate-shaped member 341, generation of eddy current due to the leakage magnetic flux is prevented. Can be suppressed. As a result, the heat generation of the conductor portion of the rotating electrical machine 101 due to the eddy current can be suppressed.
 なお、今回開示された実施形態は、すべての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は、上記した実施形態の説明ではなく特許請求の範囲によって示され、さらに特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれる。 In addition, it should be thought that embodiment disclosed this time is an illustration and restrictive at no points. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.
 たとえば、上記第1および第2実施形態では、回転子に遠心ファンおよび空気吸引部材の両方が設けられる例を示したが、たとえば、回転子に遠心ファンのみを設けるようにしてもよい。 For example, in the first and second embodiments described above, an example is shown in which both the centrifugal fan and the air suction member are provided in the rotor, but for example, only the centrifugal fan may be provided in the rotor.
 また、上記第1実施形態では、回転子の反負荷側(矢印X1方向側)に遠心ファンを設けるとともに、負荷側(矢印X2方向側)に空気吸引部材を設ける例を示したが、たとえば、回転子の反負荷側(矢印X1方向側)に空気吸引部材を設けるとともに、負荷側(矢印X2方向側)に遠心ファンを設けてもよい。同様に、上記第2実施形態では、回転子の反負荷側(矢印X1方向側)に空気吸引部材を設けるとともに、負荷側(矢印X2方向側)に遠心ファンを設ける例を示したが、たとえば、回転子の反負荷側(矢印X1方向側)に遠心ファンを設けるとともに、負荷側(矢印X2方向側)に空気吸引部材を設けてもよい。 In the first embodiment, the centrifugal fan is provided on the anti-load side (arrow X1 direction side) of the rotor and the air suction member is provided on the load side (arrow X2 direction side). While providing an air suction member on the anti-load side (arrow X1 direction side) of the rotor, a centrifugal fan may be provided on the load side (arrow X2 direction side). Similarly, in the second embodiment, the air suction member is provided on the anti-load side (arrow X1 direction side) of the rotor and the centrifugal fan is provided on the load side (arrow X2 direction side). A centrifugal fan may be provided on the anti-load side (arrow X1 direction side) of the rotor, and an air suction member may be provided on the load side (arrow X2 direction side).
 また、上記第1および第2実施形態では、遠心ファンによって通風孔の空気を吸い出して回転子の外周部近傍から外側に排出する例を示したが、これに限定されるものではない。 Further, in the first and second embodiments, the example in which the air in the ventilation hole is sucked out by the centrifugal fan and discharged from the vicinity of the outer peripheral portion of the rotor to the outside is shown, but the present invention is not limited to this.
 また、上記第1および第2実施形態では、遠心ファンの外周部が、軸方向から見て、回転子鉄心の外周部よりも内周側(たとえば約1mm程度)に配置されている例を示したが、たとえば、遠心ファンの外周部を軸方向から見て、回転子鉄心の外周部と略一致するように配置してもよいし(すなわち、遠心ファンの直径と回転子鉄心の直径とを略等しくしてもよい)、遠心ファンの外周部を、軸方向から見て、回転子鉄心の外周部よりも外周側(たとえば約1mm程度)に配置してもよい(すなわち、遠心ファンの直径を、回転子鉄心の直径よりも大きくしてもよい)。 Moreover, in the said 1st and 2nd embodiment, the outer peripheral part of a centrifugal fan shows the example arrange | positioned seeing from an axial direction inner peripheral side (for example, about 1 mm) rather than the outer peripheral part of a rotor core. However, for example, when the outer peripheral portion of the centrifugal fan is viewed from the axial direction, it may be arranged so as to substantially coincide with the outer peripheral portion of the rotor core (that is, the diameter of the centrifugal fan and the diameter of the rotor core are The outer peripheral part of the centrifugal fan may be arranged on the outer peripheral side (for example, about 1 mm) from the outer peripheral part of the rotor core when viewed from the axial direction (that is, the diameter of the centrifugal fan). May be larger than the diameter of the rotor core).
 また、上記第1および第2実施形態では、遠心ファンの開口部の周方向の長さを、隣接する開口部の間に位置する側壁部分の周方向の長さよりも大きくなるように構成する例を示したが、たとえば、開口部の周方向の長さを、隣接する開口部の間に位置する側壁部分の周方向の長さ以下にしてもよい。 In the first and second embodiments, the circumferential length of the centrifugal fan opening is configured to be larger than the circumferential length of the side wall portion located between the adjacent openings. However, for example, the circumferential length of the openings may be equal to or less than the circumferential length of the side wall portion located between the adjacent openings.
 また、上記第1および第2実施形態では、遠心ファンの周壁部分を、軸方向から見て、通風孔から、回転子の半径方向の内周側に所定距離L3(図4参照)分離間した位置において、通風孔の回転子の半径方向の内周側を塞ぐように構成する例を示したが、たとえば、遠心ファンの周壁部分を、通風孔の回転子の半径方向の内周側近傍(すなわち所定距離L3が略ゼロの位置)に配置してもよい。 In the first and second embodiments, the peripheral wall portion of the centrifugal fan is separated from the ventilation hole by a predetermined distance L3 (see FIG. 4) on the inner peripheral side in the radial direction of the rotor when viewed from the axial direction. In the position, the example in which the inner peripheral side in the radial direction of the rotor of the ventilation hole is closed has been shown. For example, the peripheral wall portion of the centrifugal fan is disposed in the vicinity of the inner peripheral side in the radial direction of the rotor of the ventilation hole ( That is, the predetermined distance L3 may be disposed at a position where the predetermined distance L3 is substantially zero.
 また、上記第1および第2実施形態では、通風孔を、軸方向から見て、回転子鉄心の半径方向の中央部よりも外周側に設ける例を示したが、たとえば、通風孔を、軸方向から見て、回転子鉄心の半径方向の中央部よりも内周側に設けてもよい。 Further, in the first and second embodiments, the example in which the ventilation hole is provided on the outer peripheral side with respect to the central portion in the radial direction of the rotor core when viewed from the axial direction has been described. You may provide in an inner peripheral side rather than the center part of the radial direction of a rotor core seeing from a direction.
 また、上記第1および第2実施形態では、遠心ファンが、ボルトにより回転子鉄心に取り付けられている例を示したが、たとえば、遠心ファンを接着材や両面テープなどにより回転子鉄心に取り付けてもよい。 Moreover, in the said 1st and 2nd embodiment, although the centrifugal fan was attached to the rotor core with the volt | bolt, the centrifugal fan was attached to the rotor core with the adhesive material or the double-sided tape etc., for example. Also good.
 また、上記第1および第2実施形態では、空気吸引部材の開口部の周方向の長さを、隣接する開口部の間に位置する側壁部分の周方向の長さよりも大きくなるように構成する例を示したが、たとえば、開口部の周方向の長さを、隣接する開口部の間に位置する第2側壁部分の周方向の長さ以下にしてもよい。 Moreover, in the said 1st and 2nd embodiment, it is comprised so that the length of the circumferential direction of the opening part of an air suction member may become larger than the circumferential direction length of the side wall part located between adjacent opening parts. Although an example has been shown, for example, the circumferential length of the openings may be equal to or less than the circumferential length of the second side wall portion located between the adjacent openings.
 また、上記第1および第2実施形態では、空気吸引部材の周壁部分を、軸方向から見て、通風孔から、回転子の半径方向の外周側に所定距離L6(図5参照)分離間した位置において、通風孔の回転子の半径方向の内周側を塞ぐように構成する例を示したが、たとえば、空気吸引部材の周壁部分を、通風孔の回転子の半径方向の外周側近傍(すなわち所定距離L6が略ゼロの位置)に配置してもよい。 Further, in the first and second embodiments, the peripheral wall portion of the air suction member is separated by a predetermined distance L6 (see FIG. 5) from the ventilation hole to the outer peripheral side in the radial direction of the rotor as viewed from the axial direction. In the position, the example in which the inner peripheral side in the radial direction of the rotor of the ventilation hole is closed has been shown. In other words, the predetermined distance L6 may be disposed at a position substantially zero).
 また、上記第1および第2実施形態では、通風孔を、永久磁石により形成される磁極ごとに設ける例を示したが、たとえば、通風孔を磁極の数よりも多く設けてもよいし、磁極の数より少なく設けてもよい。 Further, in the first and second embodiments, the example in which the ventilation holes are provided for each magnetic pole formed by the permanent magnet has been described. However, for example, the ventilation holes may be provided more than the number of magnetic poles, or the magnetic poles may be provided. You may provide less than this number.
 また、上記第1および第2実施形態では、通風孔を、各組の略V字形状に配置される永久磁石の内側に配置する例を示したが、たとえば、通風孔を、各組の略V字形状に配置される永久磁石の外側に配置してもよい。 Moreover, in the said 1st and 2nd embodiment, although the example which arrange | positions a ventilation hole inside the permanent magnet arrange | positioned in each group substantially V shape was shown, for example, a ventilation hole is substantially abbreviated for each group. You may arrange | position outside the permanent magnet arrange | positioned at V shape.
 また、上記第1および第2実施形態では、通風孔を、埋込磁石同期モータに配置する例を示したが、たとえば、巻線界磁同期モータ、誘導モータ、リラクタンスモータ等の回転電機に配置してもよい。 In the first and second embodiments, the example in which the ventilation hole is arranged in the embedded magnet synchronous motor has been shown. However, for example, the ventilation hole is arranged in a rotating electric machine such as a winding field synchronous motor, an induction motor, and a reluctance motor. May be.
 2、31 回転子
 8 ボルト
 21、32 回転子鉄心
 21a、32b 一方側面
 21b、32a 他方側面
 23、33 遠心ファン(空気排出部材)
 24、34 空気吸引部材
 25 永久磁石
 26、35 通風孔
 100、101 回転電機
 231 337 空気流通路(第1空気流通路)
 232、333 天面部分(第1天面部分)
 233、334 周壁部分(第1周壁部分)
 234、335 側壁部分(第1側壁部分)
 235、336 開口部(第1開口部)
 241、347 空気流通路(第2空気流通路)
 242、343 天面部分(第2天面部分)
 243、344 周壁部分(第2周壁部分)
 244、345 側壁部分(第2側壁部分)
 245、346 開口部(第2開口部)
 331 板状部材(第1部材)
 332 樹脂部材(第2部材)
 341 板状部材(第3部材)
 342 樹脂部材(第4部材)
2, 31 Rotor 8 Bolt 21, 32 Rotor core 21a, 32b One side 21b, 32a The other side 23, 33 Centrifugal fan (air discharge member)
24, 34 Air suction member 25 Permanent magnet 26, 35 Ventilation hole 100, 101 Rotating electric machine 231 337 Air flow path (first air flow path)
232, 333 Top part (first top part)
233, 334 Peripheral wall part (first peripheral wall part)
234, 335 Side wall portion (first side wall portion)
235, 336 opening (first opening)
241, 347 Air flow passage (second air flow passage)
242, 343 Top part (second top part)
243, 344 Peripheral wall part (second peripheral wall part)
244, 345 Side wall portion (second side wall portion)
245, 346 opening (second opening)
331 Plate member (first member)
332 Resin member (second member)
341 Plate member (third member)
342 Resin member (fourth member)

Claims (20)

  1.  軸方向に沿って貫通する通風孔(26、35)が設けられる回転子(2、31)と、
     前記回転子の軸方向の一方側面(21a、32b)に配置され、前記通風孔と接続する第1空気流通路を形成する空気排出部材(23、33)とを備え、
     前記空気排出部材は、前記回転子の外周部近傍まで延びるように形成されているとともに、前記第1空気流通路を半径方向内周側と側面方向には塞ぎ、外周側に開口するように構成されている、回転電機。
    A rotor (2, 31) provided with ventilation holes (26, 35) penetrating along the axial direction;
    An air discharge member (23, 33) disposed on one side surface (21a, 32b) in the axial direction of the rotor and forming a first air flow passage connected to the ventilation hole;
    The air discharge member is formed so as to extend to the vicinity of the outer peripheral portion of the rotor, and is configured to close the first air flow passage in the radially inner and side directions and open to the outer peripheral side. Rotating electric machine.
  2.  前記空気排出部材は、前記回転子とともに回転する際の遠心力によって、前記通風孔の空気を吸い出して前記回転子の外周部近傍から外側に排出する遠心ファン(23、33)である、請求項1に記載の回転電機。 The said air exhaust member is a centrifugal fan (23, 33) which sucks out the air of the said ventilation hole and discharges it outside from the outer peripheral part vicinity of the said rotor with the centrifugal force at the time of rotating with the said rotor. The rotating electrical machine according to 1.
  3.  前記空気排出部材は、
     前記回転子の一方側面に対向する第1天面部分(232、333)と、
     前記回転子の一方側面における半径方向の内周側を塞ぐ第1周壁部分(233、334)と、
     前記回転子の一方側面における周方向の側方側を塞ぐ第1側壁部分(234、335)とを含み、
     前記第1天面部分、前記第1周壁部分および前記第1側壁部分により囲まれた領域により前記第1空気流通路が形成されているとともに、前記第1空気流通路の前記回転子の一方側面における外周部近傍の部分に第1開口部(235、336)が設けられている、請求項1または2に記載の回転電機。
    The air discharge member is
    A first top surface portion (232, 333) facing one side surface of the rotor;
    A first peripheral wall portion (233, 334) that closes a radially inner peripheral side of one side surface of the rotor;
    A first side wall portion (234, 335) that closes a lateral side in the circumferential direction on one side surface of the rotor,
    The first air flow passage is formed by a region surrounded by the first top surface portion, the first peripheral wall portion, and the first side wall portion, and one side surface of the rotor of the first air flow passage. The rotating electrical machine according to claim 1 or 2, wherein a first opening (235, 336) is provided in a portion in the vicinity of the outer peripheral portion.
  4.  前記通風孔および前記第1空気流通路は、前記回転子の周方向に沿って複数設けられており、
     隣接する前記第1空気流通路は、前記第1側壁部分により分断されるように構成されている、請求項3に記載の回転電機。
    A plurality of the ventilation holes and the first air flow passages are provided along the circumferential direction of the rotor,
    The rotating electrical machine according to claim 3, wherein the adjacent first air flow passages are configured to be divided by the first side wall portion.
  5.  前記第1開口部は、前記回転子の周方向に沿って複数設けられており、
     前記複数の第1開口部の周方向の長さは、隣接する前記第1開口部の間に位置する前記第1側壁部分の周方向の長さよりも大きくなるように構成されている、請求項3または4に記載の回転電機。
    A plurality of the first openings are provided along the circumferential direction of the rotor,
    The circumferential length of the plurality of first openings is configured to be greater than the circumferential length of the first side wall portion located between the adjacent first openings. The rotating electrical machine according to 3 or 4.
  6.  前記空気排出部材の第1周壁部分は、軸方向から見て、前記通風孔から、前記回転子の半径方向の内周側に所定距離分離間した位置において、前記通風孔の前記回転子の半径方向の内周側を塞ぐように構成されている、請求項3~5のいずれか1項に記載の回転電機。 The first peripheral wall portion of the air discharge member has a radius of the rotor of the ventilation hole at a position separated from the ventilation hole by a predetermined distance from the ventilation hole to an inner peripheral side in the radial direction of the rotor as viewed from the axial direction. The rotating electrical machine according to any one of claims 3 to 5, wherein the rotating electrical machine is configured to close an inner peripheral side in a direction.
  7.  前記空気排出部材は、非磁性金属製の板状の部材をプレス加工することにより、前記第1天面部分と、前記第1周壁部分と、前記第1側壁部分と、前記第1開口部とを一体的に含むように形成されている、請求項3~6のいずれか1項に記載の回転電機。 The air discharge member is formed by pressing a plate-shaped member made of a non-magnetic metal, whereby the first top surface portion, the first peripheral wall portion, the first side wall portion, and the first opening portion The rotating electrical machine according to any one of claims 3 to 6, wherein the rotating electrical machine is formed so as to integrally include.
  8.  前記空気排出部材は、鉄製の板状の第1部材(331)と、前記第1部材の表面上に形成された非金属材からなる第2部材(332)とを含み、
     前記板状の第1部材により前記第1天面部分が構成され、前記第2部材により前記第1周壁部分と前記第1側壁部分とが構成され、前記第1部材と前記第2部材との外周部に前記第1開口部が設けられている、請求項3~6のいずれか1項に記載の回転電機。
    The air discharge member includes an iron plate-like first member (331) and a second member (332) made of a non-metallic material formed on the surface of the first member,
    The plate-like first member constitutes the first top surface portion, the second member constitutes the first peripheral wall portion and the first side wall portion, and the first member and the second member The rotating electrical machine according to any one of claims 3 to 6, wherein the first opening is provided in an outer peripheral portion.
  9.  前記第1部材は、前記回転子の軸方向の側面から間隔を隔てて離間した状態で配置されている、請求項8に記載の回転電機。 The rotating electrical machine according to claim 8, wherein the first member is disposed in a state of being spaced apart from an axial side surface of the rotor.
  10.  前記回転子は、回転軸に挿入された回転子鉄心(21、32)を含み、
     前記通風孔は、軸方向から見て、前記回転子鉄心の半径方向の中央部よりも外周側に設けられている、請求項1~9のいずれか1項に記載の回転電機。
    The rotor includes a rotor core (21, 32) inserted into a rotation shaft,
    The rotating electrical machine according to any one of claims 1 to 9, wherein the ventilation hole is provided on an outer peripheral side with respect to a central portion in a radial direction of the rotor core as viewed from an axial direction.
  11.  前記回転子は、回転軸に挿入された回転子鉄心(21、32)を含み、
     前記空気排出部材は、軸方向から見て、前記通風孔よりも前記回転子鉄心の内周側においてボルトにより前記回転子鉄心に取り付けられている、請求項1~10のいずれか1項に記載の回転電機。
    The rotor includes a rotor core (21, 32) inserted into a rotation shaft,
    The air discharge member according to any one of claims 1 to 10, wherein the air discharge member is attached to the rotor core by a bolt on an inner peripheral side of the rotor core with respect to the ventilation hole when viewed from the axial direction. Rotating electric machine.
  12.  前記回転子の軸方向の他方側面(21b、32a)に配置され、前記通風孔と接続する第2空気流通路(241、347)を含む空気吸引部材(24、34)をさらに備え、
     前記空気吸引部材は、前記回転子とともに回転することにより前記回転子の周囲の空気を前記第2空気流通路を介して前記通風孔側に吸引するように構成されている、請求項1~11のいずれか1項に記載の回転電機。
    An air suction member (24, 34) that is disposed on the other axial side surface (21b, 32a) of the rotor and includes second air flow passages (241, 347) connected to the ventilation holes;
    The air suction member is configured to suck air to the ventilation hole side through the second air flow passage by rotating together with the rotor. The rotating electrical machine according to any one of the above.
  13.  前記空気吸引部材は、
     前記回転子の他方側面に対向する第2天面部分(242、343)と、
     前記回転子の他方側面における半径方向の外周側を塞ぐ第2周壁部分(243、344)と、
     前記回転子の他方側面における周方向の側方側を塞ぐ第2側壁部分(244、345)とを含み、
     前記第2天面部分、前記第2周壁部分および前記第2側壁部分により囲まれた領域により前記第2空気流通路が形成されているとともに、前記第2空気流通路の前記回転子の他方側面における内周部近傍の部分に第2開口部(245、346)が設けられている、請求項12に記載の回転電機。
    The air suction member is
    A second top surface portion (242, 343) facing the other side surface of the rotor;
    A second peripheral wall portion (243, 344) that closes a radially outer peripheral side of the other side surface of the rotor;
    A second side wall portion (244, 345) for closing the circumferential side of the other side surface of the rotor,
    The second air flow passage is formed by a region surrounded by the second top surface portion, the second peripheral wall portion, and the second side wall portion, and the other side surface of the rotor of the second air flow passage. The rotating electrical machine according to claim 12, wherein a second opening (245, 346) is provided in a portion in the vicinity of the inner peripheral portion.
  14.  前記第2開口部は、前記回転子の周方向に沿って複数設けられており、前記複数の第2開口部の周方向の長さは、隣接する前記第2開口部の間に位置する前記第2側壁部分の周方向の長さよりも大きくなるように構成されている、請求項13に記載の回転電機。 A plurality of the second openings are provided along the circumferential direction of the rotor, and the circumferential lengths of the plurality of second openings are located between the adjacent second openings. The rotating electrical machine according to claim 13, wherein the rotating electrical machine is configured to be larger than a circumferential length of the second side wall portion.
  15.  前記空気吸引部材は、非磁性金属製の板状の部材をプレス加工することにより、前記第2天面部分と、前記第2周壁部分と、前記第2側壁部分と、前記第2開口部とを一体的に含むように形成されている、請求項13または14に記載の回転電機。 The air suction member is formed by pressing a plate-shaped member made of a non-magnetic metal, whereby the second top surface portion, the second peripheral wall portion, the second side wall portion, and the second opening portion The rotating electrical machine according to claim 13 or 14, wherein the rotating electrical machine is formed so as to integrally include.
  16.  前記空気吸引部材は、鉄製の板状の第3部材(341)と、前記第3部材の表面上に形成された非金属材からなる第4部材(342)とを含み、
     前記板状の第3部材により前記第2天面部分が構成され、前記第4部材により前記第2周壁部分と前記第2側壁部分とが構成され、前記第3部材と前記第4部材との内周部に前記第2開口部が設けられている、請求項13または14に記載の回転電機。
    The air suction member includes an iron plate-like third member (341) and a fourth member (342) made of a nonmetallic material formed on the surface of the third member,
    The plate-like third member constitutes the second top surface portion, the fourth member constitutes the second peripheral wall portion and the second side wall portion, and the third member and the fourth member The rotating electrical machine according to claim 13 or 14, wherein the second opening is provided in an inner periphery.
  17.  前記第3部材は、前記回転子の軸方向の側面から間隔を隔てて離間した状態で配置されている、請求項16に記載の回転電機。 The rotating electrical machine according to claim 16, wherein the third member is disposed in a state of being spaced apart from a side surface in the axial direction of the rotor.
  18.  前記回転子には、複数の永久磁石(25)が埋め込まれており、
     前記通風孔は、前記永久磁石により形成される磁極ごとに設けられている、請求項1~17のいずれか1項に記載の回転電機。
    A plurality of permanent magnets (25) are embedded in the rotor,
    The rotating electrical machine according to any one of claims 1 to 17, wherein the ventilation hole is provided for each magnetic pole formed by the permanent magnet.
  19.  前記複数の永久磁石は、軸方向から見て略V字形状に配置される複数組の永久磁石からなり、
     前記通風孔は、各組の前記略V字形状に配置される永久磁石の内側に配置されている、請求項18に記載の回転電機。
    The plurality of permanent magnets comprises a plurality of sets of permanent magnets arranged in a substantially V shape when viewed from the axial direction,
    The rotating electrical machine according to claim 18, wherein the ventilation holes are arranged inside permanent magnets arranged in the substantially V shape of each set.
  20.  軸方向に沿って貫通する通風孔(26、35)が設けられる回転子(2、31)と、
    前記回転子の軸方向の一方側面(21a、32b)に配置され、前記通風孔と接続する空気流通路を設けた遠心ファン(23、33)とを備え、
     前記遠心ファンは、前記回転子の外周部近傍まで延びるとともに、前記回転子とともに回転することにより前記通風孔の空気を前記空気流通路を介して前記回転子の外側に向かって排出するように構成されている、回転電機。
    A rotor (2, 31) provided with ventilation holes (26, 35) penetrating along the axial direction;
    A centrifugal fan (23, 33) provided on one side surface (21a, 32b) in the axial direction of the rotor and provided with an air flow passage connected to the ventilation hole;
    The centrifugal fan extends to the vicinity of the outer peripheral portion of the rotor, and is configured to discharge the air in the ventilation hole toward the outside of the rotor through the air flow passage by rotating together with the rotor. Rotating electric machine.
PCT/JP2012/062372 2012-05-15 2012-05-15 Dynamo-electric machine WO2013171839A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200071095A (en) * 2017-10-10 2020-06-18 제로 이 테크놀로지스 엘엘씨 System and method for cooling and stabilization of electric machines

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55100050A (en) * 1978-12-26 1980-07-30 Garrett Corp Rotor unit
JPH09233767A (en) * 1996-02-27 1997-09-05 Fuji Electric Co Ltd Cooling device for dynamo-electric machine
JP2004159402A (en) * 2002-11-05 2004-06-03 Toshiba Corp Electric motor and electric motor generator
JP2011211816A (en) * 2010-03-30 2011-10-20 Hitachi Ltd Permanent magnetic rotating electric machine, and wind power generating system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55100050A (en) * 1978-12-26 1980-07-30 Garrett Corp Rotor unit
JPH09233767A (en) * 1996-02-27 1997-09-05 Fuji Electric Co Ltd Cooling device for dynamo-electric machine
JP2004159402A (en) * 2002-11-05 2004-06-03 Toshiba Corp Electric motor and electric motor generator
JP2011211816A (en) * 2010-03-30 2011-10-20 Hitachi Ltd Permanent magnetic rotating electric machine, and wind power generating system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200071095A (en) * 2017-10-10 2020-06-18 제로 이 테크놀로지스 엘엘씨 System and method for cooling and stabilization of electric machines
JP2021503268A (en) * 2017-10-10 2021-02-04 ゼロ イー テクノロジーズ,エルエルシー Electrical machinery cooling and stabilization systems and methods
US11342803B2 (en) 2017-10-10 2022-05-24 Zero E Technologies, Llc Electric machine cooling systems and methods
JP7269663B2 (en) 2017-10-10 2023-05-09 ゼロ イー テクノロジーズ,エルエルシー Electric machine cooling and stabilization system and method
US11764627B2 (en) 2017-10-10 2023-09-19 Zero-E Technologies Electric machine cooling systems and methods
KR102607118B1 (en) * 2017-10-10 2023-11-29 제로 이 테크놀로지스 엘엘씨 Cooling and stabilization systems and methods for electrical machines

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