WO2013171839A1 - Machine dynamoélectrique - Google Patents

Machine dynamoélectrique 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
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English (en)
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/fr
Publication of WO2013171839A1 publication Critical patent/WO2013171839A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/08—Arrangements 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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  • Motor Or Generator Cooling System (AREA)

Abstract

La présente invention se rapporte à une machine dynamoélectrique (100) qui est pourvue : d'un rotor (2) à l'intérieur duquel sont situés des trous de circulation d'air (26) qui pénètrent dans la direction axiale; et d'un élément d'évacuation d'air (23) disposé sur la face latérale axiale (21a) du rotor et qui forme des premiers passages de flux d'air (231) qui sont reliés aux trous de circulation d'air. L'élément d'évacuation d'air est formé de sorte à s'étendre à proximité de la périphérie externe du rotor et est configuré de telle manière que les premiers passages de flux d'air soient fermés de manière radiale à la fois sur le côté de la face latérale et sur le côté périphérique intérieur et soient ouverts sur le côté périphérique extérieur.
PCT/JP2012/062372 2012-05-15 2012-05-15 Machine dynamoélectrique WO2013171839A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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JPH09233767A (ja) * 1996-02-27 1997-09-05 Fuji Electric Co Ltd 回転電機の冷却装置
JP2004159402A (ja) * 2002-11-05 2004-06-03 Toshiba Corp 電動機及び電動発電機
JP2011211816A (ja) * 2010-03-30 2011-10-20 Hitachi Ltd 永久磁石式回転電機及び風力発電システム

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JPS55100050A (en) * 1978-12-26 1980-07-30 Garrett Corp Rotor unit
JPH09233767A (ja) * 1996-02-27 1997-09-05 Fuji Electric Co Ltd 回転電機の冷却装置
JP2004159402A (ja) * 2002-11-05 2004-06-03 Toshiba Corp 電動機及び電動発電機
JP2011211816A (ja) * 2010-03-30 2011-10-20 Hitachi Ltd 永久磁石式回転電機及び風力発電システム

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Publication number Priority date Publication date Assignee Title
KR20200071095A (ko) * 2017-10-10 2020-06-18 제로 이 테크놀로지스 엘엘씨 전기 기계의 냉각 및 안정화 시스템 및 방법
JP2021503268A (ja) * 2017-10-10 2021-02-04 ゼロ イー テクノロジーズ，エルエルシー 電気機械の冷却および安定化システムおよび方法
US11342803B2 (en) 2017-10-10 2022-05-24 Zero E Technologies, Llc Electric machine cooling systems and methods
JP7269663B2 (ja) 2017-10-10 2023-05-09 ゼロ イー テクノロジーズ，エルエルシー 電気機械の冷却および安定化システムおよび方法
US11764627B2 (en) 2017-10-10 2023-09-19 Zero-E Technologies Electric machine cooling systems and methods
KR102607118B1 (ko) * 2017-10-10 2023-11-29 제로 이 테크놀로지스 엘엘씨 전기 기계의 냉각 및 안정화 시스템 및 방법

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