WO2021186530A1 - 電動機の固定子及び圧縮機 - Google Patents
電動機の固定子及び圧縮機 Download PDFInfo
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- WO2021186530A1 WO2021186530A1 PCT/JP2020/011645 JP2020011645W WO2021186530A1 WO 2021186530 A1 WO2021186530 A1 WO 2021186530A1 JP 2020011645 W JP2020011645 W JP 2020011645W WO 2021186530 A1 WO2021186530 A1 WO 2021186530A1
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- Prior art keywords
- coil
- stator
- winding
- phase
- coil group
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/18—Windings for salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
Definitions
- the present disclosure relates to a stator of a motor and a compressor having a stator of a motor.
- a coil is wound around the stator core of the stator of the motor.
- coil winding methods There are two types of coil winding methods: centralized winding and distributed winding.
- the distributed winding has a higher winding coefficient than the concentrated winding, and the magnetic flux of the rotor of the motor can be used more effectively.
- a stator in which a coil is wound by a distributed winding.
- the winding unit in which the electric wire is spirally wound is inserted into the slot of the stator core.
- the two coils inserted in the same slot must be regularly arranged so that one is on the outer diameter side of the stator and the other is on the inner diameter side of the stator. Therefore, it is necessary to appropriately correct the coil position when mounting the coil on the coil insertion jig. This position correction must be done manually by the operator or in an expensive winding device with a correction mechanism of complex structure.
- the present disclosure has been made against the background of the above-mentioned problems, and is a stator of an electric motor which is small in size, advantageous in manufacturing, and has good electric efficiency, and a compressor having a stator of such an electric motor. Is to provide.
- the stator of the motor includes an annular core back portion and a plurality of teeth portions extending inward from the core back portion and formed at intervals in the circumferential direction.
- a stator of an electric motor including a stator core in which a plurality of slots are formed by adjacent tooth portions in the teeth portion of the above, and windings wound around the teeth portion for each of a plurality of phases.
- the winding constitutes a first coil group arranged on the outer diameter side of the stator and a second coil group arranged on the inner diameter side of the stator, and the first coil group.
- the second coil group each has a plurality of coils wound concentrically, and the plurality of coils are connected in series, and in the teeth portion, on the upper part of a shaft extending in the radial direction of the stator. The windings of all the phases of the plurality of phases are crossed.
- the size can be increased while ensuring a sufficient tooth width.
- a suppressed motor stator is obtained.
- the coils of the first coil group and the second coil group are connected in series, the imbalance of the current value flowing through each coil group is suppressed. Therefore, the decrease in motor efficiency due to electrical characteristics is suppressed.
- the plurality of coils of the first coil group and the second coil group are wound concentrically, they can be easily attached to the stator core.
- the windings of all the phases of the plurality of phases extend over the shaft extending in the radial direction of the stator, and the windings are evenly arranged. Therefore, it is suppressed that the coil end is locally enlarged, and the effect of reducing the amount of copper used can be obtained. As a result, the manufacturing cost of the stator can be reduced and the motor efficiency can be improved.
- FIG. 1 It is sectional drawing which shows typically the closed type compressor provided with the stator of the motor which concerns on Embodiment 1 of this disclosure. It is a top view which shows the stator of the motor which concerns on Embodiment 1 of this disclosure. It is a top view which shows the structure of the winding of the stator of the motor which concerns on Embodiment 1 of this disclosure. It is a figure which shows the 1st winding before being inserted into the stator of the motor which concerns on Embodiment 1 of this disclosure. It is a figure which shows the 2nd winding before being inserted into the stator of the motor which concerns on Embodiment 1 of this disclosure.
- FIG. 3 It is a figure which shows the coil of the coil group before being inserted into the stator of the motor which concerns on Embodiment 3 of this disclosure. It is a top view which shows the state which the 1st coil group and the 2nd coil group are arranged in a stator in Embodiment 3 of this disclosure. It is a top view which shows the arrangement mode of the winding of the stator of the motor which concerns on Embodiment 5 of this disclosure. It is a top view which shows the arrangement mode of the winding of the stator of the motor which concerns on Embodiment 5 of this disclosure.
- the present disclosure is not limited to the following embodiments, and can be variously modified without departing from the gist of the present disclosure.
- the present disclosure includes all combinations of configurations that can be combined among the configurations shown in the following embodiments.
- the motor stator shown in the drawing shows an example of a device to which the motor stator of the present disclosure is applied, and the motor stator shown in the drawing limits the applicable device of the present disclosure. It's not a thing.
- terms indicating directions for example, “top”, “bottom”, “right”, “left”, “front”, “rear”, etc. are appropriately used for ease of understanding.
- FIG. 1 is a cross-sectional view schematically showing a sealed compressor provided with a stator of the motor according to the first embodiment of the present disclosure.
- the closed compressor 1 has a configuration in which the compression mechanism portion 3 is housed in the upper part inside the closed container 2 and the rotary electric machine part 4 is housed in the lower part.
- the compression mechanism unit 3 has a fixed scroll 31, a swing scroll 32, a guide frame 33, a compliant frame 34, and an old dam ring 35.
- the rotary electric machine unit 4 has a rotor 40 and a stator 50.
- the stator 50 is fixed to the closed container 2 by a method such as shrink fitting.
- the stator 50 is connected to the terminal 13 attached to the closed container 2 by the stator power line 12.
- the compression mechanism unit 3 and the rotary electric machine unit 4 are connected by a rotary shaft 10 held by the guide frame 33 and the subframe 11, and the power generated by the motor of the rotary electric machine unit 4 is transmitted to the compression mechanism unit 3. ..
- Refrigerating machine oil 21 for lubricating each sliding portion of the closed compressor 1 is sealed in the closed container 2.
- the fixed scroll 31 in the compression mechanism unit 3 is fixed to the guide frame 33 by bolts (not shown).
- the guide frame 33 is fixed to the closed container 2 by welding.
- the swing scroll 32 is held by the compliant frame 34, and the compliant frame 34 is held by the guide frame 33.
- the claw-shaped portion (not shown) of the old dam ring 35 is engaged with the groove-shaped portion (not shown) formed on the guide frame 33 and the swing scroll 32. As a result, the rotational movement of the swing scroll 32 with respect to the fixed scroll 31 is regulated.
- a discharge port 36 for discharging the refrigerant from the compression mechanism unit 3 is formed.
- a suction port 37 for sucking the refrigerant into the compression mechanism portion 3 is formed.
- a discharge pipe 22 for flowing out the high-pressure refrigerant discharged into the closed container 2 to the freezing circuit is provided on the side surface of the closed container 2.
- the sealed compressor 1 of the first embodiment is a high-pressure shell type scroll compressor.
- the fixed scroll 31 having a vertical wall shape formed on the base plate along the involute spiral and the rocking scroll 32 having a vertical wall shape obtained by rotating the same shape as the fixed scroll 31 by 180 degrees face each other. And are combined.
- the oscillating scroll 32 makes a circumferential motion by the power obtained from the electric starting portion by the eccentric rotating shaft 10.
- the claw-shaped portion of the Oldham ring 35 moves in parallel along the groove-shaped portion provided at right angles to the guide frame 33 and the swing scroll 32, whereby the swing scroll 32 rotates with respect to the fixed scroll 31.
- Exercise is regulated.
- the fixed scroll 31 and the swing scroll 32 which are combined so as to face each other, form a compression chamber from the outside of the spiral shape by contacting each other's standing walls, and the swing scroll 32 is moved from the suction port 37 by the circumferential motion.
- the sucked refrigerant is transferred and compressed toward the center of the spiral, and the refrigerant is discharged into the closed container 2 from the discharge port 36 provided at the center of the compression mechanism unit 3.
- the high-pressure refrigerant discharged into the closed container 2 flows out from the discharge pipe to the freezing circuit.
- FIG. 2 is a plan view showing a stator of the motor according to the first embodiment of the present disclosure.
- FIG. 2 conceptually shows the configuration of the stator 50.
- the stator 50 has a stator core 51 and a winding 52.
- the stator core 51 is configured by, for example, laminating a plurality of electromagnetic steel sheets.
- the stator core 51 has an annular core back portion 51A and a plurality of teeth portions 51B extending radially from the core back portion 51A to the center of the stator core 51.
- the plurality of tooth portions 51B are arranged at a predetermined pitch in the circumferential direction of the stator core 51.
- stator core 51 In the plurality of teeth portions 51B, slots 51C are formed between adjacent teeth portions 51B, and a plurality of slots 51C are formed in the stator core 51.
- the stator core 51 has 18 teeth portions 51B, and therefore 18 slots 51C are formed.
- the winding 52 has an A-phase winding 53, a B-phase winding 54, and a C-phase winding 55, and the winding is wound around the teeth portion 51B for each of a plurality of phases.
- the A-phase winding 53, the B-phase winding 54, and the C-phase winding 55 are hatched differently.
- the stator 50 in the stator 50, six A-phase windings 53, six B-phase windings 54, and six C-phase windings 55 are provided, and the stator 50 has six poles. doing.
- FIG. 3 is a plan view showing the configuration of the winding of the stator of the motor according to the first embodiment of the present disclosure.
- the A-phase winding 53 is concentric and has an A-phase first coil group 53A and an A-phase second coil group 53B.
- the A-phase first coil group 53A has an A-phase first coil 531, an A-phase second coil 532, and an A-phase third coil 533.
- the A-phase second coil group 53B has an A-phase fourth coil 534, an A-phase fifth coil 535, and an A-phase sixth coil 536.
- the A-phase first coil group 53A and the A-phase second coil group 53B each have a plurality of coils.
- the A-phase first coil group 53A is located on the outer diameter side of the stator 50
- the A-phase second coil group 53B is located on the inner diameter side of the stator 50. That is, the A-phase first coil group 53A is located closer to the core back portion 51A than the A-phase second coil group 53B, and the A-phase second coil group 53B has a stator 50 than the A-phase first coil group 53A. It is located near the center.
- the A-phase first coil 531 and the A-phase second coil 532, and the A-phase third coil 533 may be collectively referred to as the coils of the A-phase first coil group 53A.
- the A-phase 4th coil 534, the A-phase 5th coil 535, and the A-phase 6th coil 536 may be collectively referred to as the coils of the A-phase second coil group 53B.
- the A-phase 1st coil 531 and the A-phase 2nd coil 532, and the A-phase 3rd coil 533 of the A-phase 1st coil group 53A are a plan view of the stator 50 starting from the A-phase lead wire extraction position 5. It is inserted into the slot 51C at an equal slot pitch in the counterclockwise direction of the time. In the example shown in FIG. 3, the A-phase first coil 531 and the A-phase second coil 532, and the A-phase third coil 533 are arranged at a 4-slot pitch.
- the A-phase 4th coil 534, the A-phase 5th coil 535, and the A-phase 6th coil 536 of the A-phase 2nd coil group 53B are clocks when the stator 50 is viewed in a plan view from the lead wire extraction position 5. It is inserted into the slot 51C at equal pitches in the clockwise direction. In the example shown in FIG. 3, the A-phase 4th coil 534, the A-phase 5th coil 535, and the A-phase 6th coil 536 are arranged at a 4-slot pitch.
- the coil arrangement direction of the A-phase first coil group 53A and the coil arrangement direction of the A-phase second coil group 53B in the circumferential direction of the stator 50 are opposite to each other.
- the coil of the A-phase first coil group 53A is inserted on the outer diameter side, and the coil of the A-phase second coil group 53B is inserted on the inner diameter side.
- the coils of the A-phase first coil group 53A on the outer diameter side are arranged in the counterclockwise direction when the stator 50 is viewed in a plan view, and the coils of the A-phase second coil group 53B on the inner diameter side are fixed.
- the child 50 is arranged in the clockwise direction when viewed in a plan view, but the present invention is not limited to this.
- the coils of the A-phase first coil group 53A on the outer diameter side are arranged in the counterclockwise direction
- the coils of the A-phase second coil group 53B on the inner diameter side are arranged in the clockwise direction. It may be arranged.
- the arrangement of the stator 50 in the circumferential direction is such that the coil of the A-phase first coil group 53A on the outer diameter side and the coil of the A-phase second coil group 53B on the inner diameter side are arranged. It should be the opposite.
- the B-phase winding 54 and the C-phase winding 55 also have the same configuration as the A-phase winding 53.
- FIG. 4 is a diagram showing the first winding before being inserted into the stator of the motor according to the first embodiment of the present disclosure.
- FIG. 5 is a diagram showing a second winding before being inserted into the stator of the motor according to the first embodiment of the present disclosure.
- FIG. 6 is a plan view showing a state in which the first winding and the second winding are arranged on the stator in the first embodiment of the present disclosure. The arrangement of the coils in the first embodiment will be described with reference to FIGS. 4 to 6.
- reference numeral 102 is a lead wire at the start of winding of the first winding 101
- reference numeral 103 is a lead wire at the end of winding of the first winding 101.
- the first winding 101 includes a first winding first coil 101A, a first winding second coil 101B, and a first winding third coil 101C.
- the first winding first coil 101A, the first winding second coil 101B, and the first winding third coil 101C are uniformly wound in the winding direction indicated by the thick white wire A in FIG. ing.
- the first winding first coil 101A, the first winding second coil 101B, and the first winding third coil 101C are each concentrically wound.
- the number of windings of the first winding first coil 101A, the first winding second coil 101B, and the first winding third coil 101C is the same.
- the first winding first coil 101A closest to the winding start wire 102 is called the start coil
- the first winding third coil 101C closest to the winding end wire 103 is called the end coil. May be called.
- reference numeral 112 is a lead wire at the start of winding of the second winding 111
- reference numeral 113 is a lead wire at the end of winding of the second winding 111.
- the second winding 111 includes a second winding first coil 111A, a second winding second coil 111B, and a second winding third coil 111C.
- the second winding first coil 111A, the second winding second coil 111B, and the second winding third coil 111C are uniformly wound in the winding direction indicated by the thick white line B in FIG. ing.
- the second winding first coil 111A, the second winding second coil 111B, and the second winding third coil 111C are each concentrically wound.
- the number of windings of the first coil 111A of the second winding, the second coil 111B of the second winding, and the third coil 111C of the second winding are the same.
- the second winding first coil 111A closest to the winding start wire 112 is called the start coil
- the second winding third coil 111C closest to the winding end wire 113 is called the end coil. May be called.
- first winding first coil 101A, the first winding second coil 101B, the first winding third coil 101C, the second winding first coil 111A, the second winding second coil 111B, and The number of windings of the second winding third coil 111C is the same.
- the thick line A in FIG. 4 and the thick line B in FIG. 5 are in opposite directions. That is, the winding directions of the first winding 101 and the second winding 111 are opposite to each other.
- the stator core 51 is formed by combining the first winding 101, which is wound as shown in FIG. 4, and the second winding 111, which is wound as shown in FIG. Place in.
- the coils of the first winding 101 and the second winding 111 are alternately arranged.
- the second winding first coil 111A and the second winding of the second winding 111 are adjacent to both sides of the first winding first coil 101A of the first winding 101.
- the third coil 111C is arranged.
- the first winding first coil 101A, the first winding second coil 101B, and the first winding third coil 101C of the first winding 101 are inserted into the slots 51C at equal slot pitches.
- the first winding first coil 101A, the first winding second coil 101B, and the first winding third coil 101C are inserted into the slots 51C at a pitch of four slots.
- first winding 101 is arranged on the outer diameter side of the stator core 51
- second winding 111 is arranged on the inner diameter side of the stator core 51.
- the first winding 101 When mounting the first winding 101 wound as shown in FIG. 4 on the coil insertion jig, first, the first winding 101 is mounted on the stator core at an equal pitch of 4 slot pitches from the start coil to the end coil. It is attached to 51. Next, as shown in FIG. 5, the second winding 111 is mounted on the stator core 51 at an equal pitch of 4 slot pitches from the start coil to the end coil. At this time, the second winding 111 is mounted on the inner diameter side of the stator core 51 with respect to the first winding 101. As a result, each coil of the first winding 101 constitutes the A-phase first coil group 53A shown in FIG. 3, and each coil of the second winding 111 forms the A-phase second coil group 53B shown in FIG. It will be configured.
- FIG. 7 shows the ideal stator winding arrangement of the rotary electric machine part in the lap winding method.
- FIG. 8 shows the stator winding arrangement before the position correction of the rotary electric machine portion in the lap winding method.
- the coil is arranged as shown in FIG. 7 after the winding is inserted into the slot portion of the stator core.
- the first coil 60A is the starting coil
- the sixth coil 60F is the ending coil
- the second coil 60B in order between the first coil 60A and the sixth coil 60F
- the third coil 60C, the fourth coil 60D, and the fifth coil 60E are arranged.
- the first to sixth coils 60A, 60B, 60C, 60D, 60E, so that the slots into which the two coils are inserted are located at equal pitches in the circumferential direction of the stator core, And 60F are arranged. Then, each coil is arranged so as to be located on the outer diameter side with respect to the other coil in one of the two inserted slots and on the inner diameter side with respect to the other coil in the other slot. ing.
- the coil arrangement is as shown in FIG. Become. That is, the first coil 60A and the second coil 60B, the second coil 60B and the third coil 60C, the third coil 60C and the fourth coil 60D, the fourth coil 60D and the fifth coil 60E, and the fifth coil 60E and the sixth coil.
- the positional relationship of the coils 60F can be the arrangement shown in FIG. However, the positional relationship between the first coil 60A, which is the starting coil, and the sixth coil 60F, which is the ending coil, is not arranged as shown in FIG. 7.
- the first coil 60A is located on the outer diameter side in both the slot inserted together with the second coil 60B and the slot inserted together with the sixth coil 60F. Therefore, as shown in FIG. 7, the positional relationship between the first coil 60A and the sixth coil 60F is such that the first coil 60A is located on the inner diameter side and the sixth coil 60F is located on the outer diameter side.
- the processing cost increases due to the need to fix the position correction.
- the position correction by the operator is not required manually as compared with the case where the coil formed by the lap winding shown in FIGS. 7 and 8 is attached to the stator core. .. Therefore, according to the first embodiment, an increase in processing cost can be suppressed.
- FIG. 9 is a plan view showing the coil arrangement of each phase of the stator of the motor according to the first embodiment of the present disclosure.
- FIG. 10 is an electric circuit diagram of a stator of an electric motor according to the first embodiment of the present disclosure.
- the B-phase winding 54 and the C-phase winding 55 have the same configuration as the A-phase winding 53 described above.
- the B-phase winding 54 is concentric and has a B-phase first coil group 54A and a B-phase second coil group 54B.
- the B-phase first coil group 54A has a B-phase first coil 541, a B-phase second coil 542, and a B-phase third coil 543.
- the B-phase second coil group 54B has a B-phase fourth coil 544, a B-phase fifth coil 545, and a B-phase sixth coil 546.
- the B-phase first coil group 54A is located on the outer diameter side of the stator 50
- the B-phase second coil group 54B is located on the inner diameter side of the stator 50.
- the B-phase first coil group 54A is located closer to the core back portion 51A than the B-phase second coil group 54B, and the B-phase second coil group 54B has a stator 50 than the B-phase first coil group 54A. It is located near the center.
- the B-phase first coil 541, the B-phase second coil 542, and the B-phase third coil 543 of the B-phase first coil group 54A are counterclockwise when the stator 50 is viewed in a plan view from the winding start position. It is inserted into the slot 51C at an equal slot pitch in the direction of.
- the B-phase first coil 541, the B-phase second coil 542, and the B-phase third coil 543 are arranged at a 4-slot pitch.
- the B-phase 4th coil 544, the B-phase 5th coil 545, and the B-phase 6th coil 546 of the B-phase 2nd coil group 54B are slotted at equal pitches in the clockwise direction when the stator 50 is viewed in a plan view. It is inserted in 51C.
- the B-phase 4th coil 544, the B-phase 5th coil 545, and the B-phase 6th coil 546 are arranged at a 4-slot pitch.
- the coil arrangement direction of the B-phase first coil group 54A and the coil arrangement direction of the B-phase second coil group 54B in the circumferential direction of the stator 50 are opposite to each other.
- the coil of the B-phase first coil group 54A is inserted on the outer diameter side, and the coil of the B-phase second coil group 54B is inserted on the inner diameter side.
- the C-phase winding 55 is concentric and has a C-phase first coil group 55A and a C-phase second coil group 55B.
- the C-phase first coil group 55A has a C-phase first coil 551, a C-phase second coil 552, and a C-phase third coil 553.
- the C-phase second coil group 55B has a C-phase fourth coil 554, a C-phase fifth coil 555, and a C-phase sixth coil 556.
- the C-phase first coil group 55A is located on the outer diameter side of the stator 50
- the C-phase second coil group 55B is located on the inner diameter side of the stator 50.
- the C-phase first coil group 55A is located closer to the core back portion 51A than the C-phase second coil group 55B, and the C-phase second coil group 55B has a stator 50 than the C-phase first coil group 55A. It is located near the center.
- the C-phase first coil 551, the C-phase second coil 552, and the C-phase third coil 553 of the C-phase first coil group 55A are counterclockwise when the stator 50 is viewed in a plan view from the winding start position. It is inserted into the slot 51C at an equal slot pitch in the direction of. In the example shown in FIG. 9, the C-phase first coil 551, the C-phase second coil 552, and the C-phase third coil 553 are arranged at a 4-slot pitch.
- the C-phase 4th coil 554, the C-phase 5th coil 555, and the C-phase 6th coil 556 of the C-phase 2nd coil group 55B are slotted at equal pitches in the clockwise direction when the stator 50 is viewed in a plan view. It is inserted in 51C.
- the C-phase 4th coil 554, the C-phase 5th coil 555, and the C-phase 6th coil 556 are arranged at a 4-slot pitch.
- the coil arrangement direction of the C-phase first coil group 55A and the coil arrangement direction of the C-phase second coil group 55B in the circumferential direction of the stator 50 are opposite to each other.
- the coil of the C-phase first coil group 55A is inserted on the outer diameter side, and the coil of the C-phase second coil group 55B is inserted on the inner diameter side.
- coils of all phases of the stator 50 are arranged in all the teeth portions 51B. More specifically, in each of the plurality of teeth portions 51B, the A-phase winding 53, the B-phase winding 54, and the C-phase winding 55 are formed on the upper portion of the shaft 56 of the teeth portion 51B extending in the radial direction of the stator 50. The coil is passed to form the coil end.
- the A-phase winding 53, the B-phase winding 54, and the C-phase winding 55 are formed on the upper portion of the shaft 56 of the teeth portion 51B extending in the radial direction of the stator 50.
- the coil is passed to form the coil end.
- the A-phase 6th coil 536 of the A-phase 2nd coil group 53B, the B-phase 2nd coil 542 of the B-phase 1st coil group 54A, and the C-phase 1st coil group Only the teeth portion 51B through which the C-phase second coil 552 of 55A is passed and the coil end is formed shows the shaft 56. However, in the other teeth portion 51B, the relationship between the shaft 56 and the coil end is the same.
- the A-phase first coil group 53A and the A-phase second coil group 53B are connected in the wiring process and are connected in series. That is, the A-phase first coil group winding end 132 and the A-phase second coil group winding start 133 are connected in series. Then, the A-phase first coil group winding start 131 becomes a power supply lead wire, and the A-phase second coil group winding end 134 becomes a neutral point lead wire.
- the B-phase first coil group 54A and the B-phase second coil group 54B are connected in the wiring process and are connected in series. That is, the B-phase first coil group winding end 142 and the B-phase second coil group winding start 143 are connected in series. Then, the B-phase first coil group winding start 141 becomes the power supply lead wire, and the B-phase second coil group winding end 144 becomes the neutral point lead wire.
- the C-phase first coil group 55A and the C-phase second coil group 55B are each connected in the wiring process and are connected in series. That is, the C-phase first coil group winding end 152 and the C-phase second coil group winding start 153 are connected in series. Then, the C-phase first coil group winding start 151 becomes the power supply lead wire, and the C-phase second coil group winding end 154 becomes the neutral point lead wire.
- the A-phase first coil group winding start 131 which is the power outlet wire of the A-phase winding 53
- the B-phase first coil group winding start 141 which is the power outlet wire of the B-phase winding 54
- the C-phase first coil group winding start 151 which is the power outlet wire, is taken out to the outer diameter side of the stator 50, respectively. Therefore, when the stator power supply line 12 shown in FIG. 1 is connected to the terminal 13 attached to the closed container 2, the A-phase winding 53, the B-phase winding 54, and the C-phase winding 55 and the terminal 13 are connected to each other. The distance will be shorter. As a result, the manufacturing cost of the sealed compressor 1 can be reduced. Further, it is possible to suppress slack due to lengthening the stator power supply line 12. As a result, contact of the stator power supply line 12 with the closed container 2 and the like can be suppressed.
- the windings inserted into the slots 51C are the first coil group on the outer diameter side and the second coil group on the inner diameter side. It is divided into. Then, as described above, the coils of all the phases of the stator 50 are arranged in all the teeth portions 51B. Therefore, since the windings are evenly arranged, it is possible to prevent the coil end from becoming locally large, and the effect of reducing the amount of copper used can be obtained. As a result, the manufacturing cost of the stator can be reduced and the motor efficiency can be improved.
- connection in FIG. 10 shows an example of the connection of the stator 50 according to the first embodiment.
- the connection is not limited to the connection shown in FIG. 10 as long as the connection can form an electric circuit equivalent to that shown in FIG.
- the first embodiment has been described by taking the closed type compressor 1 which is a scroll compressor as an example, but the present invention is not limited to this. It also applies to rotary compressors and other types of motors.
- FIG. 11 is a plan view showing an arrangement mode of windings of the stator of the motor according to the second embodiment of the present disclosure.
- FIG. 11 shows only the A-phase winding 70 of the stator 250 to avoid complication of the figure.
- the A-phase winding 70 has an A-phase first coil group 70A and an A-phase second coil group 70B.
- the A-phase first coil group 70A is located on the outer diameter side of the stator 50
- the A-phase second coil group 70B is located on the inner diameter side of the stator 50.
- the winding start of the A-phase first coil group 70A is indicated by reference numeral 71, and the winding end is indicated by reference numeral 72.
- the winding start of the A-phase second coil group 70B is indicated by reference numeral 73, and the winding end is indicated by reference numeral 74.
- the A-phase first coil group 70A has an A-phase first coil 711, an A-phase second coil 712, and an A-phase third coil 713.
- the A-phase second coil group 70B has an A-phase fourth coil 714, an A-phase fifth coil 715, and an A-phase sixth coil 716.
- the winding mode of each coil of the A-phase first coil group 70A and the A-phase second coil group 70B before being inserted into the stator 50 is the same as that shown in FIG. .. That is, in the above-described first embodiment, the winding direction of the A-phase first coil group 50A and the winding direction of the A-phase second coil group 50B are opposite, whereas in the second embodiment, A. The winding direction of the first phase coil group 70A and the winding direction of the second phase A coil group 70B are the same.
- the winding end 72 of the A-phase first coil group 70A and the winding end 74 of the A-phase second coil group 70B are connected in series.
- the winding start 71 of the A-phase first coil group 70A is the power supply lead wire
- the winding start 73 of the A-phase second coil group 70B is the neutral point lead wire.
- the B-phase winding and the C-phase winding are also arranged in the same manner as shown in FIG. With this configuration, the stator 50 can be provided with a winding equivalent to that of the first embodiment.
- the winding direction of the coil is one direction
- the arrangement mode in the stator 50 is such that each coil of the A phase first coil group 70A is arranged counterclockwise, and the A phase is arranged.
- Each coil of the second coil group 70B is arranged counterclockwise. Therefore, the winding process can be simplified and the cycle time can be improved. Further, since the coil winding direction is one direction, it is possible to prevent the windings used for the A-phase first coil group 70A and the A-phase second coil group 70B from being mistaken for each other.
- the coil winding mode of the A-phase first coil group 70A and the A-phase second coil group 70B before being inserted into the stator 50 may be the same as that shown in FIG.
- winding in FIG. 11 shows an example of the connection of the stator 50 according to the second embodiment.
- the connection is not limited to the connection shown in FIG. 11 as long as the connection can form an electric circuit equivalent to that shown in FIG.
- FIG. 12 is a diagram showing the coils of the coil group before being inserted into the stator of the motor according to the third embodiment of the present disclosure.
- FIG. 13 is a plan view showing an arrangement mode of windings of the stator of the motor according to the third embodiment of the present disclosure.
- FIG. 13 shows only one phase winding to avoid complication of the figure.
- reference numeral 81 is a lead wire at the start of winding the coil
- reference numeral 82 is a lead wire at the end of winding the coil.
- the coil group 80 includes a first coil 80A, a second coil 80B, a third coil 80C, a fourth coil 80D, a fifth coil 80E, and a sixth coil 80F.
- the first coil 80A and the second coil 80B are continuous, the second coil 80B and the third coil 80C are continuous, the third coil 80C and the fourth coil 80D are continuous, and the fourth coil 80D and the fifth coil 80E are continuous.
- the 5th coil 80E and the 6th coil 80F are continuous.
- the first coil 80A, the second coil 80B, the third coil 80C, the fourth coil 80D, the fifth coil 80E, and the sixth coil 80F are wound concentrically.
- the coil shown in FIG. 12 is arranged on the stator 350 as shown in FIG.
- the first coil 80A, the second coil 80B, and the third coil 80C are arranged on the outer diameter side of the stator 350 to form the first coil group.
- the fourth coil 80D, the fifth coil 80E, and the sixth coil 80F are arranged on the inner diameter side of the stator 350 to form the second coil group.
- the first coil 80A, the second coil 80B, and the third coil 80C are arranged counterclockwise when the stator 350 is viewed in a plan view.
- the fourth coil 80D, the fifth coil 80E, and the sixth coil 80F are arranged counterclockwise when the stator 50 is viewed in a plan view.
- the winding shown in FIG. 12 is arranged on the stator 350 as shown in FIG.
- the two divided coil groups are connected in series in the wiring step.
- the coils constituting the two coil groups are wound at the stage of the winding process. Therefore, the wiring process can be simplified, the cycle time can be improved, and erroneous wiring can be suppressed.
- the winding start wire 81 serves as the power supply lead wire
- the winding end wire 82 constitutes the neutral point lead wire. Therefore, the number of places where power is taken out from the slot 51C of the stator 50 can be limited to two places. As a result, the visibility of the power outlet wire and the neutral point outlet wire of the stator 50 before the connection process is improved.
- Embodiment 4 the coils of the first coil group arranged on the outer diameter side of the stator 50 and the coils of the second coil group arranged on the inner diameter side of the stator 50 are the same. It is wound by the number of turns.
- the stator 50 is configured by making the number of turns of each coil of the first coil group different from the number of turns of each coil of the second coil group. In this case, the same number of windings are inserted into the plurality of slots 51C of the stator 50. For example, when the number of turns of each coil of the first coil group is n (n is a natural number), the number of turns of each coil of the second coil group is set to n + 1. The number of windings inserted in all the slots 51C is 2n + 1. Other configurations are the same as those of the first to third embodiments, and the coils are connected in series.
- the total number of turns of the six coils connected in series is 6 ⁇ n. ..
- the specific value of the number of turns is, for example, 6, 12, or 18.
- the total number of turns of the six coils connected in series is 6n + 3.
- the specific value of the number of turns is, for example, 9, 15, or 21.
- the range of selection of the number of coil turns is limited as compared with the case where the number of turns of each coil of the first coil group and the number of turns of each coil of the second coil group are the same. Not done. Therefore, the degree of freedom in designing the number of coil turns that can be applied to the stator 50 is increased, and a more optimum winding design can be applied to the stator 50.
- the first coil group and the second coil group are connected in series as in the first to third embodiments. Therefore, all the coils having the same phase are connected in series, and the same number of windings are inserted in each slot 50C of the stator 50. Therefore, even if there is a difference in the number of turns between the first coil group and the second coil group, there is no difference in the magnetomotive force, so that the stator 50 can be configured without causing an electrical problem. ..
- the number of turns of each coil of the first coil group may be n + 1.
- FIG. 14 is a plan view showing an arrangement mode of windings of the stator of the motor according to the fifth embodiment of the present disclosure.
- FIG. 14 shows only the A-phase winding 53 similar to the first embodiment in order to avoid complication of the drawing.
- the same components as those shown in FIG. 9 are designated by the same reference numerals.
- the A-phase first coil group winding end 132 and the A-phase second coil group winding start 133 are connected in series. Further, the A-phase first coil group winding start 131 is a power supply lead wire, and the A-phase second coil group winding end 134 is a neutral point lead wire. As shown in FIG.
- the A-phase first coil 531 to which the power supply line is connected and the A-phase sixth coil 536 connected to the neutral point are centered on the stator 50.
- the A-phase first coil group 53A and the A-phase second coil group 53B are arranged so as to sandwich and face each other.
- the A-phase 1st coil 531 closest to the power supply and the A-phase 6th coil 536 farthest from the power supply face each other with the center of the stator 50 in between.
- the two coil group 53B is arranged.
- FIG. 15 is a plan view showing an arrangement mode of windings of the stator of the motor according to the fifth embodiment of the present disclosure.
- FIG. 15 shows only the A-phase winding 70 similar to the second embodiment in order to avoid complication of the drawing.
- the same components as those shown in FIG. 11 are designated by the same reference numerals.
- the A-phase first coil group winding end 72 and the A-phase second coil group winding end 74 are connected in series.
- the A-phase first coil group winding start 71 is a power supply lead wire
- the A-phase second coil group winding start 73 is a neutral point lead wire. As shown in FIG.
- the A-phase first coil 711 to which the power supply line is connected and the A-phase fourth coil 714 connected to the neutral point are centered on the stator 250.
- the A-phase first coil group 70A and the A-phase second coil group 70B are arranged so as to sandwich and face each other. In other words, the A-phase first coil 711 closest to the power supply and the A-phase fourth coil 714 farthest from the power supply face each other with the center of the stator 50 in between.
- the two coil group 70B is arranged.
- the potential difference for the coil closest to the power supply is highest for the coil connected to the neutral point farthest from the power supply.
- the coil closest to the power supply among the first coil group arranged on the outer diameter side of the stator and the second coil arranged on the inner diameter side of the stator.
- the coil farthest from the power supply in the coil group faces each other with the center of the stator in between. Therefore, it is avoided that the coil having the largest potential difference is inserted into the same slot, and the reliability of the stator is improved.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Windings For Motors And Generators (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Compressor (AREA)
Abstract
Description
図1は、本開示の実施の形態1に係る電動機の固定子を備えた密閉型圧縮機を概略的に示す断面図である。密閉型圧縮機1は密閉容器2の内部の上部に圧縮機構部3が収納され、下部に回転電機部4が収納された構成を有している。圧縮機構部3は、固定スクロール31、揺動スクロール32、ガイドフレーム33、コンプライアントフレーム34、及びオルダムリング35を有している。回転電機部4は、回転子40及び固定子50を有している。固定子50は密閉容器2に焼嵌め等の方法により固定されている。固定子50は、固定子電源線12により、密閉容器2に取り付けられた端子13に接続される。圧縮機構部3と回転電機部4は、ガイドフレーム33とサブフレーム11とにより保持された回転軸10によって繋がっており、回転電機部4のモータで発生した動力が圧縮機構部3に伝達される。密閉容器2内には密閉型圧縮機1の各摺動部を潤滑するための冷凍機油21が封入されている。
密閉容器2内に吐出された高圧の冷媒は吐出管より冷凍回路へ流出する。
図11は、本開示の実施の形態2に係る電動機の固定子の巻線の配置態様を示す平面図である。図11は、図の複雑化を避けるため、固定子250のA相巻線70のみ示している。図11中、図3に示す構成要素と同一の構成要素には同一の符号が付されている。A相巻線70は、A相第1コイル群70Aと、A相第2コイル群70Bと、を有している。A相第1コイル群70Aは、固定子50の外径側に位置し、A相第2コイル群70Bは、固定子50の内径側に位置している。A相第1コイル群70Aの巻き始めは符号71で示され、巻き終わりは符号72で示されている。A相第2コイル群70Bの巻き始めは符号73で示され、巻き終わりは符号74で示されている。
上述の実施の形態1~3では、固定子50の外径側に配置される第1コイル群の各コイルと、固定子50の内径側に配置される第2コイル群の各コイルは、同一の巻き数で巻き回されている。これに対し、実施の形態4では、第1コイル群の各コイルの巻き数と第2コイル群の各コイルの巻き数とを異ならせて固定子50が構成される。この場合、固定子50の複数のスロット51Cの内にはそれぞれ同数の巻線が挿入されている。例えば、第1コイル群の各コイルの巻き数n(nは自然数)としたとき、第2コイル群の各コイルの巻き数をn+1とする。そして、全てのスロット51Cに挿入されている巻線の数は2n+1となる。その他の構成は実施の形態1~3と同様であり、各コイルは直列に接続される。
図14は、本開示の実施の形態5に係る電動機の固定子の巻線の配置態様を示す平面図である。図14は、図の複雑化を避けるため、実施の形態1と同様のA相巻線53のみ示している。図14において、図9に示す構成要素と同一の構成要素には同一の符号が付されている。上述のように、A相第1コイル群巻き終わり132とA相第2コイル群巻き始め133は直列に接続されている。また、A相第1コイル群巻き始め131は電源口出し線であり、A相第2コイル群巻き終わり134は中性点口出し線である。図14に示すように、本実施の形態5においては、電源線が接続されるA相第1コイル531と、中性点に接続されるA相第6コイル536は、固定子50の中心を挟んで対向するよう、A相第1コイル群53A及びA相第2コイル群53Bは配置されている。換言すると、電源に最も近いA相第1コイル531と、電源から最も遠いA相第6コイル536と、固定子50の中心を挟んで対向するよう、A相第1コイル群53A及びA相第2コイル群53Bは配置されている。
Claims (10)
- 環状のコアバック部と、前記コアバック部から内方へ延び、周方向において間隔を空けて形成されている複数のティース部と、を有し、前記複数のティース部において隣り合うティース部により複数のスロットが形成されている固定子鉄心と、
複数の相毎に前記ティース部に巻き回された巻線と、を備える電動機の固定子であって、
前記巻線は、前記固定子の外径側に配置されている第1コイル群と、前記固定子の内径側に配置されている第2コイル群と、を構成しており、
前記第1コイル群及び前記第2コイル群は、それぞれ同心巻で巻かれている複数のコイルを有し、
前記複数のコイルは直列に接続され、
前記ティース部において、前記固定子の径方向に延びる軸の上部に前記複数の相の全ての相の前記巻線が渡っている電動機の固定子。 - 前記第1コイル群を構成する前記複数のコイルは直列に接続され、前記第2コイル群を構成する前記複数のコイルは直列に接続され、前記第1コイル群と前記第2コイル群は直列に結線されている請求項1に記載の電動機の固定子。
- 前記第1コイル群の前記複数のコイルの巻線方向と前記第2コイル群の前記複数のコイルの巻線方向は反対方向である請求項2に記載の電動機の固定子。
- 前記第1コイル群の巻き終わりと前記第2コイル群の巻き始めが直列に接続されており、
前記第1コイル群の巻き始めが電源口出し線であり
前記第2コイル群の巻き終わりが中性点口出し線である請求項3に記載の電動機の固定子。 - 前記第1コイル群の巻き終わりと前記第2コイル群の巻き終わりが直列に接続されており、
前記第1コイル群の巻き始めが電源口出し線であり
前記第2コイル群の巻き始めが中性点口出し線である請求項3に記載の電動機の固定子。 - 前記第1コイル群の前記複数のコイルの巻線方向と前記第2コイル群の前記複数のコイルの巻線方向は同一であり、前記第1コイル群の前記複数のコイルと前記第2コイル群の前記複数のコイルは連続している請求項2に記載の電動機の固定子。
- 前記第1コイル群に電源線が接続され、前記第2コイル群に中性点が接続されている請求項1~6のいずれか一項に記載の電動機の固定子。
- 前記第1コイル群の複数のコイルの巻数と前記第2コイル群の複数のコイルの巻数は異なっている請求項1~7のいずれか一項に記載の電動機の固定子。
- 前記第1コイル群の前記複数のコイルのうち電源に最も近いコイルと、前記第2コイル群のうち電源から最も遠いコイルとが、前記固定子の中心を挟んで対向するよう、前記第1コイル群及び前記第2コイル群が配置されている請求項1に記載の電動機の固定子。
- 請求項1~9のいずれか一項に記載の電動機の固定子を有する回転電機部と、
前記回転電機部により駆動し、外部から吸入した冷媒を圧縮する圧縮機構部と、
前記回転電機部及び前記圧縮機構部を収納する密閉容器と、を備えた圧縮機。
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| CN202080098381.5A CN115336141B (zh) | 2020-03-17 | 2020-03-17 | 电动机的定子以及压缩机 |
| JP2022508642A JP7325608B2 (ja) | 2020-03-17 | 2020-03-17 | 電動機の固定子及び圧縮機 |
| CZ2022-386A CZ2022386A3 (cs) | 2020-03-17 | 2020-03-17 | Stator pro motor a kompresor |
| PCT/JP2020/011645 WO2021186530A1 (ja) | 2020-03-17 | 2020-03-17 | 電動機の固定子及び圧縮機 |
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| JP2015171203A (ja) * | 2014-03-06 | 2015-09-28 | シャープ株式会社 | 圧縮機 |
| JP2016152730A (ja) * | 2015-02-18 | 2016-08-22 | ファナック株式会社 | 3相交流電動機 |
| WO2019016893A1 (ja) * | 2017-07-19 | 2019-01-24 | 三菱電機株式会社 | 回転電機 |
| WO2020008883A1 (ja) * | 2018-07-06 | 2020-01-09 | 三菱電機株式会社 | 回転電機 |
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| JP3041867B2 (ja) * | 1990-01-29 | 2000-05-15 | 株式会社デンソー | 車両用交流発電機及びその製造方法 |
| JP3683235B2 (ja) * | 2002-07-03 | 2005-08-17 | 松下電器産業株式会社 | 密閉型圧縮機 |
| JP5888179B2 (ja) * | 2012-08-10 | 2016-03-16 | 株式会社豊田自動織機 | 回転電機の固定子 |
| JP2015111975A (ja) * | 2013-12-06 | 2015-06-18 | 株式会社豊田自動織機 | 回転電機の固定子、及び回転電機の固定子の製造方法 |
| US20180198353A1 (en) * | 2015-08-28 | 2018-07-12 | Aisin Aw Co., Ltd | Method for manufacturing stator and method for manufacturing rotating electrical machine |
| CN110663160B (zh) * | 2017-05-25 | 2022-08-19 | 三菱电机株式会社 | 电动机、压缩机及空气调节装置 |
| CN110875665B (zh) * | 2018-08-30 | 2022-05-31 | 广东美芝精密制造有限公司 | 同步电机和压缩机 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015171203A (ja) * | 2014-03-06 | 2015-09-28 | シャープ株式会社 | 圧縮機 |
| JP2016152730A (ja) * | 2015-02-18 | 2016-08-22 | ファナック株式会社 | 3相交流電動機 |
| WO2019016893A1 (ja) * | 2017-07-19 | 2019-01-24 | 三菱電機株式会社 | 回転電機 |
| WO2020008883A1 (ja) * | 2018-07-06 | 2020-01-09 | 三菱電機株式会社 | 回転電機 |
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