WO2017033239A1 - 回転電機及び空気調和装置 - Google Patents
回転電機及び空気調和装置 Download PDFInfo
- Publication number
- WO2017033239A1 WO2017033239A1 PCT/JP2015/073603 JP2015073603W WO2017033239A1 WO 2017033239 A1 WO2017033239 A1 WO 2017033239A1 JP 2015073603 W JP2015073603 W JP 2015073603W WO 2017033239 A1 WO2017033239 A1 WO 2017033239A1
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- WIPO (PCT)
- Prior art keywords
- magnet
- rotor core
- rotating electrical
- position detection
- electrical machine
- Prior art date
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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
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
- F25B31/02—Compressor arrangements of motor-compressor units
- F25B31/026—Compressor arrangements of motor-compressor units with compressor of rotary type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
- H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
- H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Definitions
- the present invention relates to a rotating electric machine and an air conditioner in which a permanent magnet is embedded in a rotor core.
- the rotating electrical machine is used as a power source for the device. Some rotary electric machines are controlled based on the position of the rotor. As shown in Patent Document 1 and Patent Document 2, some of such rotating electrical machines include a sensor for detecting the position of the rotor and a magnet for detection.
- An object of the present invention is to obtain a rotating electrical machine that can suppress a decrease in accuracy when detecting the position of a rotor having a permanent magnet.
- a rotating electrical machine includes a rotor core, a plurality of first magnets, a second magnet, and a stator.
- the rotor core rotates around the rotation axis.
- the first magnets are arranged side by side in the circumferential direction of the rotor core and are embedded in the rotor core.
- the second magnet has a plurality of magnetic poles arranged in the circumferential direction of the rotor core, is disposed on the end surface of the rotor core in the direction in which the axis extends, and the plurality of first magnets in a direction orthogonal to the rotation axis. It is arranged at a different position.
- the stator is provided outside the rotor core in a direction orthogonal to the rotation axis.
- FIG. 3 is a plan view of the position detection magnet according to the first embodiment.
- FIG. 5 is a plan view showing a position detection magnet according to the second embodiment.
- the figure which shows the waveform of the magnetic flux density of the magnet for position detection The figure which shows the air conditioning apparatus which concerns on Embodiment 3.
- FIG. 5 is a plan view showing a position detection magnet according to the second embodiment.
- the rotating electrical machine only needs to include a stator in which an electric wire is wound around a stator core, and the type is not limited.
- the rotating electrical machine is not limited to a motor, that is, a device that generates power, and may be a generator that generates electric power.
- FIG. 1 is a perspective view of the rotating electrical machine according to the first embodiment.
- FIG. 2 is a cross-sectional view showing a state in which the rotating electrical machine according to Embodiment 1 is cut along a plane parallel to the rotation axis and passing through the rotation axis.
- the rotating electrical machine 1 includes a housing 2 and a shaft 3.
- the housing 2 houses a pair of bearings 4T and 4B that support the shaft 3, a stator 6, a rotor 10 that is a rotor for a rotating electrical machine, and a sensor 9.
- the rotor 10 includes a rotor core 5 to which the shaft 3 is attached, a driving permanent magnet 7 that is a first magnet embedded in the rotor core 5, and a second magnet disposed on the end face of the rotor core 5.
- the position detecting magnet 8 is included.
- the shaft 3 and the rotor 10 rotate about the rotation axis Zr.
- the axis Zr is appropriately referred to as a rotation axis Zr.
- the housing 2 has a cylindrical side portion 2S, a first flange 2T attached to one end of the side portion 2S, and a second flange 2B attached to the other end of the side portion 2S.
- the side portion 2 ⁇ / b> S has a through hole 2 ⁇ / b> SH that penetrates in a direction parallel to the rotation axis Zr of the shaft 3 and the rotor 10.
- the side portion 2S has a cylindrical shape, but the shape of the side portion 2S is not limited to the cylindrical shape.
- Side part 2S has stator 6 attached to inner surface 2SI.
- the inner surface 2SI of the side portion 2S has a circular cross section when cut by a plane orthogonal to the rotation axis Zr.
- the stator 6 is disposed in the through hole 2SH of the side portion 2S.
- the stator 6 is provided outside the rotor core 5 of the rotor 10 in the direction DR perpendicular to the rotation axis Zr.
- the rotor 10 is disposed inside the stator 6 in the direction DR orthogonal to the rotation axis Zr.
- the through hole 2SH of the side portion 2S is closed by a first flange 2T attached to one end portion of the side portion 2S and a second flange 2B attached to the other end portion. With such a structure, the stator 6 and the rotor 10 are accommodated in a space surrounded by the side portion 2S, the first flange 2T, and the second flange 2B, that is, the through hole 2
- the first flange 2T has a through hole 2TH through which the shaft 3 to which the rotor core 5 is attached passes.
- a bearing 4T is attached to the through hole 2TH of the first flange 2T.
- a bearing 4B is attached to the second flange 2B.
- the pair of bearings 4T and 4B are ball bearings, but are not limited to this.
- the first flange 2T is a member on the side from which the shaft 3 of the rotating electrical machine 1 protrudes.
- a terminal for supplying power to the stator 6 of the rotating electrical machine 1 and a terminal for taking out the output of the sensor 9 to the outside of the rotating electrical machine 1 are attached to the second flange 2B.
- the sensor 9 is attached to the side facing the rotor 10 of the second flange 2B.
- the sensor 9 is a magnetic sensor and is a Hall element in the first embodiment.
- the sensor 9 is not limited to a Hall element.
- the sensor 9 detects the magnetic flux from the position detection magnet 8.
- the rotor 10 of the rotating electrical machine 1 is an interior permanent magnet (IPM). That is, the rotor 10 has a form in which the driving permanent magnet 7 is embedded in the rotor core 5. The rotor 10 generates torque by the magnetic flux from the driving permanent magnet 7 and the magnetic flux from the stator 6 and rotates around the rotation axis Zr. The position detection magnet 8 is used to detect the position of the rotor 10.
- the control device 20 controls the rotating electrical machine 1.
- the control device 20 controls the rotating electrical machine 1 using the magnetic flux from the position detection magnet 8 detected by the sensor 9.
- FIG. 3 is a perspective view of a rotor included in the rotating electrical machine according to the first embodiment.
- the rotor core 5 of the rotor 10 is a cylindrical structure having a cylindrical side surface 5S, a circular first end surface 5TT, and a circular second end surface 5TB. As shown in FIG. 2, the first end face 5TT faces the first flange 2T, and the second end face 5TB faces the second flange 2B.
- the rotor core 5 is formed by laminating a plurality of disk-shaped electromagnetic steel plates, but is not limited to such a structure.
- the rotor core 5 may be a structure obtained by molding a magnetic material powder.
- the rotation axis Zr passes through the center of the first end face 5TT and the center of the second end face 5TB of the rotor core 5.
- the position detection magnet 8 is disposed on the end face of the rotor core 5, more specifically, on the second end face 5TB in the direction in which the rotation axis Zr extends.
- the direction in which the rotation axis Zr extends is appropriately referred to as an axial direction.
- the position detection magnet 8 is disposed at a position different from the plurality of drive permanent magnets 7 in the direction DR orthogonal to the rotation axis Zr, that is, the radial direction DR of the rotor core 5.
- the position detection magnet 8 is arranged outside the plurality of drive permanent magnets 7 in the radial direction DR of the rotor core 5.
- the position detecting magnet 8 may be a position that does not overlap with the plurality of driving permanent magnets 7 in the radial direction DR of the rotor core 5, and is disposed inside the plurality of driving permanent magnets 7 in the radial direction DR. May be.
- FIG. 4 is a plan view of the rotor according to the first embodiment when viewed from the position detection magnet side.
- FIG. 5 is a plan view of the rotor core according to the first embodiment as viewed from the second end face side.
- FIG. 6 is a plan view of the position detection magnet according to the first embodiment.
- FIG. 7 is a perspective view of the position detection magnet according to the first embodiment.
- FIG. 8 is an AA arrow view of FIG.
- the rotor core 5 shown in FIG. 5 shows a state where a plurality of driving permanent magnets 7 are removed.
- the plurality of driving permanent magnets 7 are arranged side by side in the circumferential direction C of the rotor core 5.
- the plurality of driving permanent magnets 7 are arranged side by side in the first circle CL1 with the rotation axis Zr as the center.
- the first circle CL1 is a circle having a smaller diameter than the rotor core 5.
- the driving permanent magnet 7 is installed in the through-hole 11 passing through the rotor core 5 in the direction in which the rotation axis Zr of the rotor core 5 extends, that is, in the axial direction, as shown in FIGS. 4 and 5.
- the through hole 11 is appropriately referred to as a first through hole 11.
- the plurality of driving permanent magnets 7 and the plurality of first through holes 11 are arranged on the circumference of the first circle CL1.
- the driving permanent magnet 7 is a plate-shaped and rectangular magnet. That is, the driving permanent magnet 7 is a cube-shaped magnet surrounded by six rectangular planes. Of the six planes of the driving permanent magnet 7, the two largest planes are arranged to face each other, and the remaining four planes connect the two largest planes.
- the direction perpendicular to the two largest planes of the driving permanent magnet 7 is the thickness direction of the driving permanent magnet 7.
- the drive permanent magnet 7 has a thickness direction parallel to the radial direction DR of the rotor core 5. For this reason, in the cross section orthogonal to the rotation axis Zr, the direction in which the driving permanent magnet 7 and the first through hole 11 extend is parallel to the tangent to the first circle CL1.
- the driving permanent magnet 7 has a plate shape and a rectangular shape. However, the driving permanent magnet 7 is not limited to such a shape, and may have a cylindrical shape.
- the rotor core 5 has two through holes 12 and 12 between adjacent drive permanent magnets 7 and 7.
- the two through holes 12, 12 penetrate the rotor core 5 in the axial direction and are arranged side by side in the circumferential direction C of the rotor core 5.
- the through hole 12 is appropriately referred to as a second through hole 12.
- the number of the second through holes 12 is not limited to two, but may be one or three or more. When the number of the second through holes 12 is one, the second through holes 12 may be connected to the adjacent first through holes 11 or may be independent of the first through holes 11.
- the leakage flux of the driving permanent magnet 7 may flow to the adjacent driving permanent magnet 7. Since this leakage magnetic flux flows through the position detection magnet 8, it affects the magnetic flux of the position detection magnet 8. Since the second through hole 12 provided between the adjacent drive permanent magnets 7 and 7 becomes a magnetic resistance, the leakage magnetic flux of the drive permanent magnet 7 can be reduced. As a result, the second through hole 12 can reduce the influence of the leakage magnetic flux of the drive permanent magnet 7 on the magnetic flux of the position detection magnet 8.
- the second through hole 12 extends along a direction parallel to the radial direction DR of the rotor core 5. With such a structure, the second through hole 12 is inclined with respect to the first through hole 11 in a cross section orthogonal to the rotation axis Zr. In the first embodiment, the second through hole 12 is connected to the first through hole 11, but may not be connected to the first through hole 11 and may be independent.
- the second through hole 12 connected to one end of the first through hole 11 is appropriately referred to as a second through hole 12 ⁇ / b> A.
- the second through hole 12 connected to the other end is appropriately referred to as a second through hole 12B.
- the magnetic poles of the plurality of drive permanent magnets 7 are arranged in the circumferential direction C of the rotor core 5 on the side surface 5S side of the rotor core 5, that is, on the stator 6 side shown in FIG. Alternatingly arranged. Between the adjacent drive permanent magnets 7, 7 is the inter-pole IMR of the rotor 10.
- the inter-pole IMR of the rotor 10 is appropriately referred to as a first inter-pole IMR.
- the rotor 10 has six driving permanent magnets 7, so that there are three magnetic pole pairs of N and S poles. That is, the rotor 10 has 6 poles. In this case, the IMR between the first poles is also six.
- the number of driving permanent magnets 7 included in the rotor 10 is not limited to six.
- the position detection magnet 8 will be described.
- the position detecting magnet 8 has a plurality of magnetic poles, N poles and S poles, arranged in the circumferential direction C of the rotor core 5.
- the plurality of magnetic poles are arranged side by side in the second circle CL2 around the rotation axis Zr.
- the second circle CL2 is a circle having a smaller diameter than the rotor core 5 and a larger diameter than the first circle CL1.
- the position detection magnet 8 is an annular magnet extending along the circumferential direction C of the rotor core 5.
- the position detection magnet 8 has a small occupied area in the radial direction DR of the rotor core 5. For this reason, the annular position detecting magnet 8 can be easily arranged at a position different from the plurality of driving permanent magnets 7 in the radial direction DR of the rotor core 5.
- the position detecting magnet 8 has N poles and S poles arranged alternately in the circumferential direction. Between the north pole and the south pole is the inter-pole IMD of the position detection magnet 8.
- the inter-electrode IMD is appropriately referred to as a second inter-electrode IMD.
- the second inter-pole IMD is a portion where the magnetic flux density of the position detecting magnet 8 becomes zero. Adjacent second inter-pole IMDs and IMDs are magnetic pole centers CM.
- the sensor 9 shown in FIG. 2 detects the position of the rotor 10 by the IMD between the second poles of the position detection magnet 8.
- the direction of magnetization of the position detection magnet 8 is the axial direction.
- the position detecting magnet 8 is magnetized in a direction from the end surface 8PD facing the sensor 9 to the end surface 8PH on the rotor core 5 side, and a portion magnetized in the direction from the end surface 8PH to the end surface 8PD. Are alternately repeated side by side in the circumferential direction of the position detecting magnet 8.
- the sensor 9 can detect the second inter-pole IMD of the position detection magnet 8 from the second end face 5TB side of the rotor core 5.
- the position detection magnet 8 has a protrusion 8T protruding in the axial direction.
- the protrusion 8T is a cylindrical portion that protrudes in the axial direction from the end face 8PH on the rotor core 5 side of the position detection magnet 8.
- the shape of the protrusion 8T is not limited to a cylindrical shape, and may be a polygonal column shape such as a quadrangular column or a hexagonal column.
- the position detecting magnet 8 has a plurality of, specifically six, protrusions 8T arranged in the circumferential direction.
- the protrusion 8T positions the rotor core 5 and the position detection magnet 8. For positioning, the position detecting magnet 8 only needs to have at least two protrusions, and the number of protrusions 8T is not limited as long as this condition is satisfied.
- the rotor core 5 has a hole 13 into which the protrusion 8T of the position detection magnet 8 is inserted.
- the rotor core 5 has the same number of holes 13 as the protrusions 8T.
- the number of holes 13 is also six.
- each hole 13 is a bottomed hole that penetrates along the axial direction of the rotor core 5 from the first end face 5TT to the second end face 5TB, but does not penetrate. There may be. In this case, the hole 13 only needs to open to the second end surface 5TB and be deeper than the height of the protrusion 8T.
- the position detection magnet 8 is disposed outside the plurality of drive permanent magnets 7 in the radial direction DR of the rotor core 5. For this reason, the hole 13 is provided outside the driving permanent magnet 7 in the radial direction DR of the rotor core 5.
- the position detection magnet 8 is arranged inside the plurality of drive permanent magnets 7 in the radial direction DR of the rotor core 5, each hole 13 is permanent in the drive in the radial direction DR of the rotor core 5.
- the position detection magnet 8 When the protrusion 8T of the position detection magnet 8 is inserted into the hole 13 of the rotor core 5, the position detection magnet 8 is attached to the second end face 5TB of the rotor core 5.
- the position detecting magnet 8 By using the protrusion 8T and the hole 13, the position detecting magnet 8 can be attached to the rotor core 5 with a simple structure, and the positioning of the position detecting magnet 8 and the rotor core 5 can be realized.
- both may be combined using an adhesive or a screw.
- the holes 13 are arranged at the center of the driving permanent magnet 7 in the circumferential direction C of the rotor core 5 and outside the radial direction DR, so that each hole 13 is formed on the rotation axis Zr. They are arranged symmetrically.
- the rotor core 5 has a dimension of the driving permanent magnet 7 outside the radial direction DR at the center in the circumferential direction C of the rotor core 5 larger than the end portion of the driving permanent magnet 7 in the circumferential direction C. . For this reason, the influence on the magnetic flux of the drive permanent magnet 7 is reduced by arranging the hole 13 at the center in the circumferential direction C of the rotor core 5 of the drive permanent magnet 7 and outside the radial direction DR.
- the first inter-pole IMR between the adjacent drive permanent magnets 7 and 7, and the adjacent magnetic poles of the position detection magnet 8, that is, the N pole and the S pole are arranged at the same position in the circumferential direction C of the rotor core 5.
- the drive permanent magnet 7 is avoided between the adjacent magnetic poles of the position detection magnet 8, that is, inside the second inter-pole IMD. Be placed.
- the position detecting magnet 8 improves the accuracy with which the sensor 9 detects the second interpolar IMD. Will be improved.
- the position detection magnet 8 is arranged outside the driving permanent magnet 7 in the radial direction DR of the rotor core 5. With such an arrangement, the resolution when the sensor 9 detects the inter-electrode IMD is improved, so that the detection accuracy of the position of the rotor 10 by the sensor 9 is improved.
- the position detecting magnet 8 When the position detecting magnet 8 is arranged inside the driving permanent magnet 7 in the radial direction DR of the rotor cores 5 and 5 a, the permanent magnet embedded type rotating electrical machine 1 is provided with the shaft 3 due to the presence of the shaft 3. It may not be possible to secure a space for arranging the. Further, when the position detection magnet 8 is disposed in the vicinity of the shaft 3, it is difficult to install the sensor 9 at a position facing the position detection magnet 8 in the axial direction due to the presence of the bearing 4B that supports the shaft 3. There is also sex. In the radial direction DR of the rotor core 5, when the position detection magnet 8 is disposed outside the drive permanent magnet 7, the position detection magnet 8 is disposed at a position away from the shaft 3 and the bearing 4B. Become.
- the arrangement of the position detection magnet 8 described above has an advantage that it is easy to secure a space for arranging the position detection magnet 8 and the sensor 9 even in the permanent magnet embedded type rotary electric machine 1.
- the first inter-pole IMR of the rotor 10 and the second inter-pole IMD of the position detection magnet 8 are arranged at the same position in the circumferential direction C of the rotor core 5.
- the rotor 10 can improve the detection accuracy of the second inter-electrode IMD by the sensor 9.
- the driving permanent magnet 7 is disposed so as to avoid the inside of the second interpole IMD of the position detecting magnet 8, whereby the second interpole IMD and the driving permanent magnet are arranged. 7 is a positional relationship that does not overlap each other.
- the influence of the driving permanent magnet 7 on the magnetic flux of the position detecting magnet 8 can be reduced. Therefore, the rotor 10 can improve the detection accuracy of the second inter-electrode IMD by the sensor 9. Can do.
- FIG. 9 is a diagram showing a waveform of the magnetic flux density of the position detection magnet detected by the sensor.
- the vertical axis represents the magnetic flux density B
- the horizontal axis represents the electrical angle ⁇ e of the position detection magnet 8.
- the position where the electrical angle ⁇ e is 0 degree is the magnetic pole center CM of the position detecting magnet 8 shown in FIG.
- the second inter-pole IMD is a portion where the magnetic flux density B is 0, that is, a position where the electrical angle ⁇ e is ⁇ 90 degrees and 90 degrees.
- the magnetic flux density B of the position detection magnet 8 changes rapidly in the vicinity of the second inter-electrode IMD, more specifically, when the electrical angle ⁇ e is ⁇ 90 degrees ⁇ 10 degrees and the electrical angle ⁇ e is 90 degrees ⁇ 10 degrees. Yes.
- the sensor 9 detects the position of the IMD between the second poles of the position detection magnet 8, it is preferable that the sensor 9 is not affected by the leakage magnetic flux from the drive permanent magnet 7. Therefore, the drive permanent magnet 7 has an electrical angle ⁇ e in the radial direction DR of the rotor core 5 inside the second inter-pole IMD of the position detecting magnet 8, that is, inside the radial direction DR of the rotor core 5.
- the electric angle ⁇ e and the electrical angle ⁇ e be arranged so as to avoid the range of ⁇ 90 degrees ⁇ 10 degrees and 90 degrees ⁇ 10 degrees. By doing so, the influence of the leakage magnetic flux from the driving permanent magnet 7 on the second inter-pole IMD of the position detecting magnet 8 can be made extremely small. Detection accuracy can be improved.
- the position detection magnet 8 is arranged outside the plurality of drive permanent magnets 7 in the radial direction DR of the rotor core 5 so as not to overlap these, the leakage magnetic flux of the drive permanent magnet 7 is not leaked. The influence on the position detection magnet 8 is reduced. As a result, since the disturbance of the waveform of the magnetic flux density B detected by the sensor 9 is suppressed, the detection accuracy of the second inter-electrode IMD by the sensor 9 can be improved. Furthermore, since the position detection magnet 8 is disposed only outside the radial direction DR of the plurality of drive permanent magnets 7, the position detection magnet 8 inside the radial direction DR becomes unnecessary. As a result, the volume of the position detection magnet 8 included in the rotor 10 can be reduced, so that the material of the position detection magnet 8 can be reduced and the position detection magnet 8 can be downsized.
- the dimension W of the second through hole 12 in the circumferential direction C of the rotor core 5 is the size of the gap between the rotor core 5 and the stator 6. It is preferably 1.5 times or more.
- the dimension W of the 2nd through-hole 12 is the distance of the inner wall 12I and the inner wall 12E which oppose in the circumferential direction C of the rotor core 5, as FIG. 5 shows.
- the inner wall 12I is a wall of the second through hole 12 on the first through hole 11 side
- the inner wall 12E is a wall of the second through hole 12 on the adjacent second through hole 12 side.
- the gap between the rotor core 5 and the stator 6 is a gap GP between the side surface 5S of the rotor core 5 and the surface 6TI of the teeth 6T of the stator 6 on the rotor 10 side, as shown in FIG.
- the size of the gap GP is assumed to be t.
- the magnetic flux of the driving permanent magnet 7 includes a magnetic flux that flows to the stator 6 side through the gap GP and a leakage magnetic flux that flows to the adjacent driving permanent magnet 7 through the second through hole 12. A part of the leakage magnetic flux flows through the position detection magnet 8, and thus affects the magnetic flux of the position detection magnet 8.
- the rotor 10 has two second through holes 12 between adjacent drive permanent magnets 7 and 7. As described above, since the second through hole 12 has a magnetic resistance, when the dimension W of the second through hole 12 is 1.5 times or more the size t of the gap GP, the magnetic resistance by the second through hole 12 is increased. Is three times the magnetic resistance of the gap GP.
- the leakage flux of the driving permanent magnet 7 can be reduced.
- the rotor 10 can improve the detection accuracy of the second inter-pole IMD by the sensor 9. .
- the dimension W of the second through hole 12 is too large, there is a possibility that the drive permanent magnet 7 cannot be sufficiently secured. For this reason, it is preferable that the dimension W of the 2nd through-hole 12 shall be 2.0 times or less of the magnitude
- the inner wall 12IA of the second through hole 12A close to one of the adjacent drive permanent magnets 7 and 7, the rotation wall Zr, and the inner wall of the second through hole 12B close to the other of the adjacent drive permanent magnets 7 and 7.
- An angle formed by 12IB is defined as an angle ⁇ a.
- the position PIA of the inner wall 12IA of the through hole 12A at the detection position of the sensor 9 and the position PIB of the inner wall 12IB of the through hole 12B at the detection position of the sensor 9 are used as references. Therefore, the angle ⁇ a is an angle formed by the position PIA, the rotation axis Zr, and the position PIB.
- the detection position of the sensor 9 is on the circumference of the second circle CL2, but if it is on the end face of the position detection magnet 8 facing the sensor 9, the circle of the second circle CL2 It is not limited to the lap.
- the angle ⁇ a is preferably 20 degrees or more of the electrical angle ⁇ e of the position detection magnet 8. Since the position detection magnet 8 has 6 poles and 3 magnetic pole pairs of N pole and S pole, when the angle ⁇ a is converted into the central angle of the rotor core 5 around the rotation axis Zr, the angle ⁇ a is 6 It is preferable that the angle be 67 ° or more.
- the sensor 9 shown in FIG. 2 detects the IMD between the second poles of the position detecting magnet 8, in order to reduce the influence of the magnetic flux of the driving permanent magnet 7 on the magnetic flux of the position detecting magnet 8, It is preferable that there is no electromagnetic steel plate of the rotor core 5 around the IMD between the two poles.
- a gap, that is, the second through-hole 12 exists around the IMD between the second poles of the position detection magnet 8. .
- the rotor 10 can improve the detection accuracy of the second inter-electrode IMD by the sensor 9.
- the angle ⁇ a is preferably 30 degrees or less of the electrical angle ⁇ e of the position detection magnet 8.
- the angle ⁇ a is preferably 10 degrees or less. In this way, the detection accuracy of the second inter-electrode IMD by the sensor 9 can be improved while ensuring the size of the driving permanent magnet 7.
- 10 and 11 are diagrams showing the magnetic flux of the position detecting magnet and the magnetic flux of the driving permanent magnet. 10 and 11 show a cross section when the rotor 10 is cut along a plane including the rotation axis Zr and parallel to the rotation axis Zr.
- the direction of the leakage magnetic flux MLL of the driving permanent magnet 7 in the axial direction and the direction of the magnetic flux MLC of the position detection magnet 8 are the same direction.
- the magnetic flux MLD generated by the driving permanent magnet 7 acts on the magnetic flux from the stator 6 to rotate the rotor 10. Further, a leakage magnetic flux MLL from the driving permanent magnet 7 is generated in the rotor 10.
- FIG. 10 shows a case where the polarity of the driving permanent magnet 7 and the polarity of the position detecting magnet 8 on the side surface 5S side of the rotor core 5 are both N poles.
- the leakage magnetic flux MLL of the driving permanent magnet 7 leaks from between the driving permanent magnet 7 and the side surface 5S of the rotor core 5 and enters the inner side of the driving direction permanent magnet 7 in the radial direction DR.
- the magnetic flux MLC of the position detection magnet 8 is directed away from the end surface 8PD facing the sensor 9.
- FIG. 11 shows a case where the polarity of the driving permanent magnet 7 and the polarity of the position detecting magnet 8 on the side surface 5S side of the rotor core 5 are both S poles.
- the leakage magnetic flux MLL of the driving permanent magnet 7 leaks from the inner side in the radial direction DR than the driving permanent magnet 7 and enters between the driving permanent magnet 7 and the side surface 5S of the rotor core 5.
- the magnetic flux MLC of the position detection magnet 8 is directed to the end face 8PD facing the sensor 9.
- the direction of the leakage magnetic flux MLL of the drive permanent magnet 7 in the axial direction and the direction of the magnetic flux MLC of the position detection magnet 8 become the same direction. That is, if the polarity of the driving permanent magnet 7 on the side surface 5S side of the rotor core 5 in the circumferential direction C of the rotor core 5 and the polarity of the position detecting magnet 8 are the same, the driving permanent in the axial direction.
- the direction of the leakage magnetic flux MLL of the magnet 7 and the direction of the magnetic flux MLC of the position detection magnet 8 are the same direction.
- the position detection magnet 8 has an axial dimension h that is perpendicular to the rotation axis Zr, that is, the dimension of the driving permanent magnet 7 in the radial direction DR of the rotor core 5. It is preferable that it is more than a certain thickness tm.
- the leakage magnetic flux MLL in the axial direction of the driving permanent magnet 7 passes through the end surface 8PD facing the sensor 9, that is, the end surface opposite to the protrusion 8T in the axial direction.
- the axial dimension h of the position detecting magnet 8 is set to be equal to or larger than the thickness tm of the driving permanent magnet 7, thereby driving the permanent magnet. 7 influence on the magnetic flux MLC of the position detecting magnet 8 is reduced. As a result, the rotor 10 can suppress a decrease in detection accuracy of the second inter-electrode IMD by the sensor 9. If the dimension h in the axial direction of the position detection magnet 8 becomes too large, the dimension in the axial direction of the rotating electrical machine 1 becomes large.
- the dimension h in the axial direction of the position detecting magnet 8 is not more than twice, preferably not more than 1.5 times the thickness tm of the driving permanent magnet 7. If it does in this way, it can control that the size in the direction of an axis of rotating electrical machine 1 becomes excessive, suppressing the influence of leakage magnetic flux MLL of permanent magnet 7 for a drive.
- FIG. 12 is a plan view of the rotor according to the modification of the first embodiment as viewed from the position detection magnet side.
- the protrusion 8T of the position detecting magnet 8 is inserted into the second through hole 12 of the rotor core 5a.
- the position detecting magnet 8 is positioned on the rotor core 5a by the protrusion 8T and the second through hole 12.
- the rotor core 5 described above has the hole 13 into which the protrusion 8T is inserted.
- the hole 13 is a gap, the magnetic flux MLD of the driving permanent magnet 7 is affected.
- the rotor 10a according to the modified example eliminates the need for the hole 13 by inserting the protrusion 8T into the second through hole 12.
- the rotor 10a can position the position detecting magnet 8 on the rotor core 5a while minimizing the influence exerted on the magnetic flux MLD of the driving permanent magnet 7. Therefore, the rotor 10a can effectively use the magnetic flux MLD of the driving permanent magnet 7.
- the rotors 10 and 10a are different from the permanent magnets 7 for driving in which the position detecting magnet 8 is the second end surface 5TB in the axial direction of the rotor core 5 and the radial direction DR. Arranged at different positions.
- the position detection magnet 8 does not overlap with the plurality of drive permanent magnets 7 in both the axial direction and the radial direction DR of the stator core 5.
- the position detecting magnet 8 acts on the leakage magnetic flux MLL of the driving permanent magnet 7 and the magnetic flux of the stator 6 to suppress the influence of the magnetic flux MLD of the driving permanent magnet 7 that rotates the rotor 10. .
- the rotors 10 and 10a can suppress a decrease in accuracy when the sensor 9 detects the positions of the rotors 10 and 10a.
- the rotating electrical machine 1 provided with the rotors 10 and 10a according to the first embodiment and the modification thereof can improve the accuracy when the sensor 9 detects the positions of the rotors 10 and 10a, malfunction is caused. In addition to being suppressed, operation with high efficiency can be realized. Since the efficiency of the rotating electrical machine 1 including the rotors 10 and 10a is improved, energy consumption of the rotating electrical machine 1 is suppressed. Since the malfunctioning of the rotating electrical machine 1 including the rotors 10 and 10a is suppressed, a decrease in durability due to the malfunctioning is suppressed.
- the configurations of the first embodiment and the modifications thereof can be applied as appropriate to the following embodiments.
- FIG. FIG. 13 is a plan view of the rotor according to the second embodiment as viewed from the position detection magnet side.
- FIG. 14 is a plan view showing a position detection magnet according to the second embodiment.
- the position detection magnet 8a according to the second embodiment is obtained by dividing the annular position detection magnet 8 according to the first embodiment and the modification thereof into three parts.
- Other configurations of the second embodiment are the same as those of the first embodiment and its modifications.
- the number of poles of the position detection magnet 8a before division is P and N are natural numbers, the number of divisions only needs to satisfy the relationship of P / N, and the number of divisions is not limited to three.
- the position detection magnet 8a of the rotor 10b includes a first position detection magnet 8a1, a second position detection magnet 8a2, and a third position detection magnet 8a3.
- the first position detection magnet 8a1, the second position detection magnet 8a2, and the third position detection magnet 8a3 have an arc shape when viewed from the direction in which the rotation axis Zr extends, and are combined to form an annular shape.
- the position detecting magnet 8a is a.
- the position detection magnet 8 according to Embodiment 1 is preferably as large as possible in the radial direction in order to improve the detection accuracy of the sensor 9.
- the mold for forming the position detecting magnet 8 becomes large, which may reduce productivity.
- one annular position detection magnet 8a is a combination of a plurality of first position detection magnets 8a1, second position detection magnets 8a2, and third position detection magnets 8a3.
- the molds for forming the first position detecting magnet 8a1, the second position detecting magnet 8a2, and the third position detecting magnet 8a3 can be made small and shared. As a result, a decrease in productivity of the position detecting magnet 8a can be suppressed, and the manufacturing cost of the mold can be reduced.
- FIG. 15 is a diagram showing a waveform of the magnetic flux density of the position detection magnet.
- the vertical axis in FIG. 15 is the magnetic flux density B, and the horizontal axis is the electrical angle ⁇ e of the position detecting magnet 8a before the division.
- the position where the electrical angle ⁇ e is 0 degree and ⁇ 180 degrees is the position detection magnet 8a, that is, the magnetic pole center CM of the position detection magnet 8 according to the first embodiment.
- the position detection magnet 8a is lowered. For this reason, it is preferable that the position detecting magnet 8a before the division is divided at a portion where the magnetic flux density B is relatively high.
- the position detecting magnet 8a before the division has a range RS1 in which the electrical angle ⁇ e is 30 degrees or more and 70 degrees or less, a range RS2 in which the electrical angle ⁇ e is 110 degrees or more and 150 degrees or less, and an electrical angle ⁇ e is ⁇ 150 degrees or more and ⁇ 110 degrees or less.
- the magnetic flux density B in the range RS3 and the range RS4 in which the electrical angle ⁇ e is ⁇ 70 degrees to ⁇ 30 degrees is relatively high.
- the ranges RS1, RS2, RS3, and RS4 are all between the magnetic pole center CM and the second inter-pole IMD.
- the position detecting magnet 8a before the division is divided by any one of the ranges RS1, RS2, RS3, and RS4, so that the divided portion PS is any one of the ranges RS1, RS2, RS3, and RS4. Is provided.
- the divided part PS is provided in any one of the ranges RS1, RS2, RS3, RS4 in which the magnetic flux density B is relatively high.
- the divided part PS is disposed at a position away from the second inter-pole IMD where the magnetic flux density B becomes zero. A decrease in accuracy when the sensor 9 detects the position of the IMD between the second poles of the position detection magnet 8a is suppressed.
- FIG. FIG. 16 is a diagram illustrating an air-conditioning apparatus according to Embodiment 3.
- the air conditioner 50 includes an outdoor unit 51 and an indoor unit 52.
- the outdoor unit 51 includes a compressor 53 that is driven by the rotating electrical machine 1 to compress the refrigerant, and a condenser 54 that condenses the refrigerant compressed by the compressor 53.
- the outdoor unit 51 further includes a blower 58 that blows air to the condenser 54.
- the blower 58 includes the rotating electrical machine 1 and an impeller 58B driven by the rotating electrical machine 1.
- the compressor 53 and the condenser 54 are connected by a pipe 57A through which the refrigerant passes.
- the indoor unit 52 includes an evaporator 55 that evaporates the refrigerant condensed by the condenser 54.
- the indoor unit 52 further includes a blower 59 that blows air to the evaporator 55 and an expansion valve 56 that expands the liquid-phase refrigerant condensed by the condenser 54 and flows into the evaporator 55.
- the blower 59 includes the rotating electrical machine 1 and an impeller 59B driven by the rotating electrical machine 1.
- the condenser 54 and the evaporator 55 are connected by a pipe 57B through which the refrigerant passes.
- the expansion valve 56 is attached in the middle of the pipe 57B.
- the evaporator 55 and the compressor 53 are connected by a pipe 57C through which the refrigerant passes.
- the rotating electrical machine 1 that drives the compressor 53, the impeller 58B of the blower 58, and the impeller 59B of the blower 59 includes the rotor 10 according to the first embodiment, the rotor 10a according to the modification of the first embodiment, or the implementation. Any one of the rotors 10b which concerns on form 2 is provided. For this reason, since the rotary electric machine 1 can improve the accuracy when the sensor 9 detects the positions of the rotors 10, 10a, and 10b, the malfunction of the rotary electric machine 1 can be suppressed and the efficiency can be improved.
- the air conditioner 50 provided with such a rotating electrical machine 1 is capable of realizing an operation with high efficiency while suppressing malfunction.
- the configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.
- 1 rotating electrical machine 2 housing, 3 shaft, 5, 5a rotor core, 5S side surface, 5TT first end surface, 5TB second end surface, 6 stator, 6T teeth, 6TI surface, 7 driving permanent magnet, 8, 8a Position detection magnet, 8a1, first position detection magnet, 8a2, second position detection magnet, 8a3, third position detection magnet, 8PD, 8PH end face, 8T protrusion, 9 sensor, 10, 10a, 10b rotor, 11th 1 through hole, 12, 12A, 12B second through hole, 12E, 12I inner wall, 13 holes, 20 control device, 50 air conditioner, 53 compressor, 54 condenser, 55 evaporator, C circumferential direction, CL1 first Circle, CL2 second circle, CM magnetic pole center, DR radial direction, GP gap, IMD, IMR interpole, MLC, MLD magnetic flux, MLL leakage magnetic field , Zr rotating shaft.
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Abstract
Description
図1は、実施の形態1に係る回転電機の斜視図である。図2は、実施の形態1に係る回転電機を回転軸と平行かつ回転軸を通る平面で切った状態を示す断面図である。図1に示されるように、回転電機1は、筐体2と、シャフト3とを備えている。図2に示されるように、筐体2は、シャフト3を支持する一対の軸受4T,4B、固定子6、回転電機用回転子である回転子10及びセンサ9を収納する。回転子10は、シャフト3が取り付けられた回転子コア5と、回転子コア5に埋め込まれた第1磁石である駆動用永久磁石7と、回転子コア5の端面に配置された第2磁石である位置検出用磁石8とを含む。シャフト3及び回転子10は、回転軸Zrを中心として回転する。以下において、軸Zrを適宜回転軸Zrと称する。
図13は、実施の形態2に係る回転子を位置検出用磁石側から見た平面図である。図14は、実施の形態2に係る位置検出用磁石を示す平面図である。実施の形態2に係る位置検出用磁石8aは、実施の形態1及びその変形例に係る環状の位置検出用磁石8を3分割したものである。実施の形態2の他の構成は実施の形態1及びその変形例と同様である。
図16は、実施の形態3に係る空気調和装置を示す図である。空気調和装置50は、室外機51と、室内機52とを備える。室外機51は、回転電機1によって駆動されて冷媒を圧縮する圧縮機53と、圧縮機53によって圧縮された冷媒を凝縮させる凝縮器54とを含む。室外機51は、凝縮器54に送風する送風機58をさらに含む。送風機58は、回転電機1と、回転電機1によって駆動される羽根車58Bとを含む。圧縮機53と凝縮器54とは冷媒を通過させる配管57Aで接続されている。
Claims (11)
- 回転軸を中心として回転する回転子コアと、
前記回転子コアの周方向に並んで配置され、かつ前記回転子コアに埋め込まれる複数の第1磁石と、
前記回転子コアの周方向に並んで複数の磁極を有し、前記軸が延在する方向において前記回転子コアの端面に配置され、かつ前記軸と直交する方向において前記複数の第1磁石とは異なる位置に配置される第2磁石と、
前記回転軸と直交する方向において、前記回転子コアの外側に設けられる固定子と、
を含む、回転電機。 - 前記第2磁石は、前記軸と直交する方向において、前記第1磁石よりも外側に配置される、請求項1に記載の回転電機。
- 隣接する前記第1磁石の間である第1極間と、隣接する前記磁極の間である第2極間とは、前記周方向において同一の位置に配置される、請求項1又は請求項2に記載の回転電機。
- 前記軸と直交する方向において、隣接する前記磁極の間の内側を避けて前記第1磁石が配置される、請求項3に記載の回転電機。
- 前記軸が延在する方向における前記第1磁石の漏れ磁束の向きと、前記第2磁石の磁束の向きとが同一方向である、請求項1から請求項4のいずれか1項に記載の回転電機。
- 前記回転子コアは、
前記軸が延在する方向に前記回転子コアを貫通し、かつ前記周方向に並んで配置される2個の貫通孔を、隣接する前記第1磁石の間に有し、
前記周方向における前記第2の貫通孔の寸法は、
前記回転軸と直交する方向において、前記回転子コアと前記固定子との隙間の大きさの1.5倍以上である、請求項1から請求項5のいずれか1項に記載の回転電機。 - 前記回転子コアは、
前記軸が延在する方向に前記回転子コアを貫通し、かつ前記周方向に並んで配置される2個の貫通孔を、隣接する前記第1磁石の間に有し、
隣接する前記第1磁石のうち一方に近い前記貫通孔の内壁と、前記軸と、隣接する前記第1磁石のうち他方に近い前記貫通孔の内壁と、のなす角度が、前記第2磁石の電気角の20度以上である、請求項1から請求項5のいずれか1項に記載の回転電機。 - 前記回転子コアは、
前記軸が延在する方向に前記回転子コアを貫通し、かつ前記回転子コアの周方向に並んで配置される2個の貫通孔を、隣接する前記第1磁石の間に有し、
前記第2磁石は、前記軸が延在する方向に突出し、前記貫通孔に差し込まれる突起を有する、請求項1から請求項5のいずれか1項に記載の回転電機。 - 前記第2磁石は、前記軸が延在する方向に突出する突起を有し、
前記回転子コアは、前記軸と直交する方向において、前記第1磁石の外側に、前記突起が差し込まれる孔を有する、請求項1から請求項7のいずれか1項に記載の回転電機。 - 前記第2磁石は、
前記軸が延在する方向の寸法が、前記軸と直交する方向における前記第1磁石の寸法以上である、請求項1から請求項9のいずれか1項に記載の回転電機。 - 請求項1から請求項10のいずれか1項に記載の回転電機と、
前記回転電機によって駆動されて冷媒を圧縮する圧縮機と、
前記圧縮機によって圧縮された前記冷媒を凝縮させる凝縮器と、
前記凝縮器によって凝縮された冷媒を蒸発させる蒸発器と、
を含む、空気調和装置。
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GB1800141.2A GB2556245B (en) | 2015-08-21 | 2015-08-21 | Rotary electric machine and air conditioning apparatus |
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DE112015006824.4T DE112015006824T5 (de) | 2015-08-21 | 2015-08-21 | Elektrische rotationsmaschine und klimagerät |
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- 2015-08-21 US US15/742,599 patent/US10630123B2/en active Active
- 2015-08-21 GB GB1800141.2A patent/GB2556245B/en active Active
- 2015-08-21 DE DE112015006824.4T patent/DE112015006824T5/de active Pending
- 2015-08-21 WO PCT/JP2015/073603 patent/WO2017033239A1/ja active Application Filing
- 2015-08-21 JP JP2017536080A patent/JP6509347B2/ja active Active
- 2015-08-21 KR KR1020187001661A patent/KR20180019687A/ko active Search and Examination
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US11264848B2 (en) | 2017-03-27 | 2022-03-01 | Mitsubishi Electric Corporation | Rotor, motor, compressor, fan, and air conditioning apparatus |
EP3605796A4 (en) * | 2017-03-27 | 2020-03-18 | Mitsubishi Electric Corporation | ROTOR, ELECTRIC MOTOR, COMPRESSOR, FAN AND AIR CONDITIONING DEVICE |
JP7083895B2 (ja) | 2017-10-25 | 2022-06-13 | ピエルブルグ ポンプ テクノロジー ゲーエムベーハー | 自動車用電動流体ポンプ |
CN111226384A (zh) * | 2017-10-25 | 2020-06-02 | 皮尔伯格泵技术有限责任公司 | 电气的机动车流体泵 |
JP2021501550A (ja) * | 2017-10-25 | 2021-01-14 | ピエルブルグ ポンプ テクノロジー ゲーエムベーハーPierburg Pump Technology Gmbh | 自動車用電動流体ポンプ |
US11462971B2 (en) | 2017-10-25 | 2022-10-04 | Pierburg Pump Technology Gmbh | Electric fluid pump for a motor vehicle |
CN111226384B (zh) * | 2017-10-25 | 2022-07-05 | 皮尔伯格泵技术有限责任公司 | 电气的机动车流体泵 |
WO2020129207A1 (ja) * | 2018-12-20 | 2020-06-25 | 三菱電機株式会社 | 回転子、電動機、送風機、空気調和装置および回転子の製造方法 |
JP7012878B2 (ja) | 2018-12-20 | 2022-01-28 | 三菱電機株式会社 | 回転子、電動機、送風機、空気調和装置および回転子の製造方法 |
JPWO2020129207A1 (ja) * | 2018-12-20 | 2021-06-03 | 三菱電機株式会社 | 回転子、電動機、送風機、空気調和装置および回転子の製造方法 |
JPWO2020183523A1 (ja) * | 2019-03-08 | 2021-10-14 | 三菱電機株式会社 | モータ、ファン、および空気調和機 |
WO2020183523A1 (ja) * | 2019-03-08 | 2020-09-17 | 三菱電機株式会社 | モータ、ファン、および空気調和機 |
JP7098047B2 (ja) | 2019-03-08 | 2022-07-08 | 三菱電機株式会社 | モータ、ファン、および空気調和機 |
JP2021129470A (ja) * | 2020-02-17 | 2021-09-02 | 株式会社デンソー | ロータ |
WO2021166872A1 (ja) * | 2020-02-17 | 2021-08-26 | 株式会社デンソー | ロータ |
JP7318556B2 (ja) | 2020-02-17 | 2023-08-01 | 株式会社デンソー | ロータ |
JP2022020991A (ja) * | 2020-07-21 | 2022-02-02 | 株式会社デンソー | 回転電機のロータ |
JP7468214B2 (ja) | 2020-07-21 | 2024-04-16 | 株式会社デンソー | 回転電機のロータ |
WO2023162331A1 (ja) * | 2022-02-24 | 2023-08-31 | パナソニックIpマネジメント株式会社 | ロータ及び電動機 |
Also Published As
Publication number | Publication date |
---|---|
KR20180019687A (ko) | 2018-02-26 |
GB201800141D0 (en) | 2018-02-21 |
CN107925284B (zh) | 2020-03-31 |
CN107925284A (zh) | 2018-04-17 |
GB2556245B (en) | 2021-07-28 |
US20190068015A1 (en) | 2019-02-28 |
GB2556245A (en) | 2018-05-23 |
US10630123B2 (en) | 2020-04-21 |
JP6509347B2 (ja) | 2019-05-08 |
JPWO2017033239A1 (ja) | 2018-03-22 |
DE112015006824T5 (de) | 2018-05-03 |
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