CN100342625C - Permanent magnet type rotary machine and compressor comprising it - Google Patents
Permanent magnet type rotary machine and compressor comprising it Download PDFInfo
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- CN100342625C CN100342625C CNB028046455A CN02804645A CN100342625C CN 100342625 C CN100342625 C CN 100342625C CN B028046455 A CNB028046455 A CN B028046455A CN 02804645 A CN02804645 A CN 02804645A CN 100342625 C CN100342625 C CN 100342625C
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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
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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
- H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
Abstract
A low-noise permanent magnet type rotary machine and a compressor of comprising it. A tooth (8) of a stator core (5) keeps the tip shaped into an arc concentric with the rotor core (3) in the tooth center side, and shaped into a straight line in the tooth end side. When the intersection of an extension of the linear section on the tooth tip and the slot center line (OA) is (B), the distance of this intersection (B) from the rotor center is (b), and the distance of the tooth tip arc section from the rotor center is (c), 1.11 </= (b/c) </= 1.16. This setting of the tooth tip shape mekes it possible to reduce a noise of a permanent magnet type rotary machine.
Description
Technical field
The present invention relates to a kind ofly be provided with excitation with the permanent magnet rotary electric machine of permanent magnet, particularly relate to the permanent magnet rotary electric machine that is equipped on compressor etc. at rotor.
Background technology
Past, in this permanent magnet rotary electric machine, promptly reduce torque pulsation in order to reduce noise, taked various countermeasures.For example Japan real open that flat 3-106869 communique put down in writing like that, the central authorities of tooth leading section and rotor core are concentric circles, the two ends that make the tooth leading section are linearity, promptly from rotor away from, thereby the reduction torque pulse.
In above-mentioned prior art, thus the two ends by making the tooth leading section from rotor away from reducing torque pulse, but, must obviously reduce torque pulse in order to reduce noise, single-pass cross the two ends that make the tooth leading section from rotor away from and insufficient.
Summary of the invention
The permanent magnet rotary electric machine that noise when the object of the present invention is to provide a kind of the revolution is little.
In order to achieve the above object, the permanent magnet rotary electric machine that a kind of 5KW level of the present invention is following has stator and rotor; This stator has a plurality of teeth in stator core, forms armature winding in this stator core; This rotor inserts in the hole at a plurality of permanent magnets that are formed at rotor core and accommodates permanent magnet; It is characterized in that: the shape of the tooth front end of said stator iron core is with circular-arc part and at least 1 the shape that linearity part combined concentric with above-mentioned rotor core; If the extended line of each linearity part of this tooth front end and each intersection point of groove center line are b apart from the mean value of the distance of rotor center, this tooth front end with the concentric part of this rotor core be c apart from the distance of rotor center, then satisfy 1.11≤(b/c)≤1.16 relation.
In order to achieve the above object, the permanent magnet rotary electric machine that a kind of 5KW level of the present invention is following has stator and rotor, and the number of poles of permanent magnet is 4 utmost points; This stator has 6 teeth in stator core, forms armature winding in this stator core; This rotor inserts in the hole at a plurality of permanent magnets that are formed at rotor core and accommodates permanent magnet; It is characterized in that: the shape of the tooth front end of said stator iron core is with part and at least 1 the shape that linearity part combined concentric with above-mentioned rotor core; If the extended line of each linearity part of this tooth front end and each intersection point of groove center line are b apart from the mean value of the distance of rotor center, this tooth front end with the concentric part of this rotor core be c apart from the distance of rotor center, then satisfy 1.11≤(b/c)≤1.16 relation.
In order to achieve the above object, the permanent magnet rotary electric machine that a kind of 5KW level of the present invention is following has stator and rotor; This stator has a plurality of teeth in stator core, forms armature winding in this stator core; This rotor inserts in the hole at a plurality of permanent magnets that are formed at rotor core and accommodates permanent magnet; It is characterized in that: the shape of the tooth front end of said stator iron core is with part and at least 1 the shape that non-concentric circles arcuation part combined concentric with above-mentioned rotor core; If the extended line of the internal side diameter shape of the non-concentric circles arcuation part of each of this tooth front end and each intersection point of groove center line are b apart from the mean value of the distance of rotor center, this tooth front end with the concentric part of this rotor core be c apart from the distance of rotor center, then satisfy 1.11≤(b/c)≤1.16 relation.
In order to achieve the above object, the permanent magnet rotary electric machine that a kind of 5KW level of the present invention is following has stator and rotor; This stator has a plurality of teeth in stator core, forms armature winding in this stator core; This rotor inserts in the hole at a plurality of permanent magnets that are formed at rotor core and accommodates permanent magnet; It is characterized in that: the shape of the tooth front end of said stator iron core is with at least 1 circular-arc part and at least 1 shape that the linearity part is combined with above-mentioned rotor core decentraction; If each extended line of this tooth leading section shape and each intersection point of groove center line are b apart from the mean value of the distance of rotor center, this tooth front end is c apart from the beeline of rotor center, then satisfies 1.11≤(b/c)≤1.16 relation.
In order to achieve the above object, the permanent magnet rotary electric machine that a kind of 5KW level of the present invention is following has stator and rotor; This stator has a plurality of teeth in stator core, forms armature winding in this stator core; This rotor inserts in the hole at a plurality of permanent magnets that are formed at rotor core and accommodates permanent magnet; It is characterized in that: the shape that is shaped as a plurality of linearity parts of combination of the tooth front end of said stator iron core; If each extended line of this tooth leading section shape and each intersection point of groove center line are b apart from the mean value of the distance of rotor center, this tooth front end is c apart from the beeline of rotor center, then satisfies 1.11≤(b/c)≤1.16 relation.
In order to achieve the above object, the permanent magnet rotary electric machine that a kind of 5KW level of the present invention is following has stator and rotor; This stator has a plurality of teeth in stator core, forms armature winding in this stator core; This rotor inserts in the hole at a plurality of permanent magnets that are formed at rotor core and accommodates permanent magnet; It is characterized in that: the shape that is shaped as the circular-arc part that makes up a plurality of and rotor core decentraction of the tooth front end of said stator iron core; If each extended line that this tooth leading section is circular-arc and each intersection point of groove center line are b apart from the mean value of the distance of rotor center, this tooth front end is c apart from the beeline of rotor center, then satisfies 1.11≤(b/c)≤1.16 relation.
In order to achieve the above object, the permanent magnet rotary electric machine that a kind of 5KW level of the present invention is following has stator and rotor; This stator has a plurality of teeth in stator core, forms armature winding in this stator core; This rotor inserts in the hole at a plurality of permanent magnets that are formed at rotor core and accommodates permanent magnet; It is characterized in that: the shape of the tooth front end of said stator iron core be with the circular-arc part of the concentric part of above-mentioned rotor core, at least 1 decentraction, and at least 1 shape that the linearity part is combined; If each extended line of the shape except that concentric circles arcuation part of this tooth front end and each intersection point of groove center line are b apart from the mean value of the distance of rotor center, this tooth front end is c apart from the beeline of rotor center, then satisfies 1.11≤(b/c)≤1.16 relation.
Constitute as described above, the tooth front end shape optimization of stator core then, so, low noise permanent magnet rotary electric machine can be provided.
Description of drawings
Fig. 1 is the structural map section that the permanent magnet rotary electric machine of one embodiment of the invention is shown,
Fig. 2 is the figure that the velocity variations of permanent magnet rotary electric machine of the present invention is shown,
Fig. 3 is the figure that the relation of tooth front end shape of the present invention and noise is shown,
Fig. 4 is the figure of stator core section configuration that the permanent magnet rotary electric machine of another embodiment of the present invention is shown,
Fig. 5 is the figure that the relation of tooth front end shape of the present invention and noise is shown,
Fig. 6 is the figure of stator core section configuration that the permanent magnet rotary electric machine of another embodiment of the present invention is shown,
Fig. 7 is the figure that the relation of tooth front end shape of the present invention and noise is shown,
Fig. 8 is the figure of stator core section configuration that the permanent magnet rotary electric machine of another embodiment of the present invention is shown,
Fig. 9 is the figure that the relation of tooth front end shape of the present invention and noise is shown,
Figure 10 is the figure of stator core section configuration that the permanent magnet rotary electric machine of another embodiment of the present invention is shown,
Figure 11 is the figure that the relation of tooth front end shape of the present invention and noise is shown,
Figure 12 is the figure of stator core section configuration that the permanent magnet rotary electric machine of another embodiment of the present invention is shown,
Figure 13 is the figure that the relation of tooth front end shape of the present invention and noise is shown,
Figure 14 is the figure of stator core section configuration that the permanent magnet rotary electric machine of another embodiment of the present invention is shown,
Figure 15 is the figure that the relation of tooth front end shape of the present invention and noise is shown,
Figure 16 is the figure that the cross-section structure of compressor of the present invention is shown.
Embodiment
Describe embodiments of the invention in detail below with reference to Fig. 1～Figure 16.Symbol 1 is a rotor, and symbol 2 is a permanent magnet, and symbol 3 is rotor core, symbol 4 is an axle, and symbol 5 is a stator, and symbol 6 is a rear of core, symbol 7 is a groove, and symbol 8 is a tooth, and symbol 8a is the side of tooth leading section, symbol 9 is the circle concentric with rotor core, and symbol 10 is a fixed scroll member, and symbol 11 is an end plate, symbol 12,15 is scroll wraps, and symbol 13 is a scroll element, and symbol 14 is an end plate, symbol 16 is a discharge chambe, symbol 17 is an outlet, and symbol 18 is a frame, and symbol 19 is a compression container, symbol 20 is a dump valve, symbol 21 is a drive motor, and symbol 22 is an armature winding, and symbol 23 is an oil collection part, symbol 24 is an oilhole, and symbol 25 is a sliding bearing.In each figure, general symbol illustrates same article.In addition,, the permanent magnet rotary electric machine of 4 utmost points, 6 grooves is shown here.
Fig. 1 illustrates the permanent magnet rotary electric machine of one embodiment of the invention, and Fig. 2 illustrates the measured value of the velocity variations of permanent magnet rotary electric machine, and Fig. 3 illustrates the noise measured result of electric rotating machine.In Fig. 1, permanent magnet rotary electric machine is made of stator 5 and rotor 1, and the iron core of stator 5 is formed by 6 teeth 8 and rear of core 6.In addition, in the groove 7 of stator 5, surround tooth 8 ground packages and concentrate the winding (not shown).On the other hand, be provided for burying underground the hole of permanent magnet, bury permanent magnet 2 underground at this place in rotor core 3 at rotor 1.
Noise in the time of can listing revolution as a problem in the permanent magnet rotary electric machine, but this noise is caused by torque pulse.
Fig. 2 represents as benchmark average speed for the result of the variation of actual measurement speed of gyration with relative value.Such as shown in the figure, speed of gyration not necessarily changes slightly.This velocity variations is produced by torque pulse, so, as reduce torque pulse, then speed of gyration is certain substantially, can reduce noise.
As described above, get final product away from rotor 1 in order to reduce torque pulse, generally know that the two ends 8a that makes the tooth leading section.Yet the sound in order to reduce to turn round not is that the two ends 8a of tooth leading section just can be dealt with problems away from rotor core 3.
Therefore, as shown in Figure 1, make the front end of tooth 8 become circular-arc (center O of centers of arc sections and rotor core 3 is consistent) concentric with rotor core 3 at the tooth center, in the two ends of tooth front end 8a side is linearity, if the intersection point of the extended line of the linearity of tooth front end part and the center line OA of groove is B, intersection points B is b apart from the distance of rotor center, and the circular-arc part of tooth front end is c apart from the distance of rotor center, make the electric rotating machine that changes b/c, the noise during the actual measurement revolution.
Fig. 3 illustrates the relation of b/c and noise.The sound in permanent magnet rotary electric machine when revolution is little to be represented by zero mark, is loudly represented by * mark.The occasion of 200W machine, as to establish (b/c) be 1.11≤(b/c)≤1.18, the sound when then turning round reduces.This can think that sound does not diminish yet owing to only reduce seldom in 1.10 torque pulse when following as (b/c), and (b/c) can think that 1.20 when above the width of (b/c) big more then channel opening portion is magnetically expanded on the contrary, and sound does not reduce.Therefore, as near the two ends 8a of tooth front end away from rotor 1, though then torque pulse reduces, the sound in order to reduce to turn round, only be away from and insufficient, need become 1.11≤(b/c)≤1.18 ground and make the two ends 8a of tooth front end away from rotor 1.
Equally, when measuring the 2kW machine, the sound when 1.10≤(b/c)≤1.17 scope revolution reduces, and for the 5kW machine, the scope sound 1.08≤(b/c)≤1.16 reduces.
Like this, though the scope of optimum value (b/c) produces some variations with the difference of the output (physique) of permanent magnet rotary electric machine, but for the permanent magnet rotary electric machine below the 5kW level, as be 1.11≤(b/c)≤1.16, the sound in the time of then can reducing to turn round.
Fig. 4 illustrates the stator core section configuration of the permanent magnet rotary electric machine of another embodiment of the present invention.In Fig. 4, the front end shape of tooth 8 at the tooth center is and concentric circular-arc of rotor 1, at the two ends of tooth front end 8a for by 2 different shapes that straight line constitutes of gradient., obtain extended line and the intersection points B 1 of groove center line OA1 here, the distance of intersection points B 1 and rotor center O is made as b1 by the linearity at tooth center part.In addition, obtain extended line and the intersection points B 2 of groove center line OA2, the distance of intersection points B 2 and rotor center O is made as b2 by the linearity part of the end of tooth front end.At this moment, the mean value of establishing b1 and b2 is b, and establishing rotor center O is c to the minimum range of tooth front end, the noise of the electric rotating machine of the shape that actual measurement b/c is different.
Noise measured result when Fig. 5 illustrates the tooth front end shape that forms as shown in Figure 4.From this result as can be known, the sound when 1.11≤(b/c)≤1.16 revolutions reduces.Therefore, when the front end of tooth 8 is shaped as partly shape of the concentric circular-arc part of combination and rotor 1 and a plurality of linearity, as the mean value of establishing the distance of each intersection point of the extended line of each linearity part and groove center line and rotor center is b, then the occasion with Fig. 1 is identical, the noise when 1.11≤(b/c)≤1.16 can reduce revolution.
Fig. 6 illustrates the stator core section configuration of the permanent magnet rotary electric machine of another embodiment of the present invention.In Fig. 6, the front end of tooth 8 at the tooth center is and concentric circular-arc of rotor core 3, is nonconcentric(al) circular-arc in the two ends of tooth front end 8a side.That is, the tooth front end the tooth center be in the concentric circle 9 of the center O of rotor 1 on, for example being in a P at tooth two ends 8a is on the circle at center.At this moment, obtain the extended line of non-concentric circles arcuation part of tooth front end and the intersection points B of groove center line OA, if the distance of intersection points B and rotor center is b, the concentric circles arcuation of tooth front end part is c with the distance of rotor center, the noise of the permanent magnet rotary electric machine when actual measurement changes b/c.
Noise measured result when Fig. 7 illustrates the tooth front end shape that forms as shown in Figure 6.Identical with the occasion of Fig. 1, as be 1.11≤(b/c)≤1.16, the sound when then turning round and the output of electric rotating machine irrespectively reduce.Therefore, though when the front end shape of tooth 8 for the concentric circular-arc part of combination and rotor 1 and the shape of nonconcentric(al) circular-arc portion, as long as be 1.11≤(b/c)≤1.16, then can reduce the noise when turning round.
Fig. 8 illustrates the stator core section configuration of the permanent magnet rotary electric machine of another embodiment of the present invention.In Fig. 8, the front end of tooth 8 at the tooth center is and concentric circular-arc of rotor core 3, is linearity in the two ends of tooth front end 8a side.That is, the tooth front end for being the circular-arc of center with the some P different with the center O of rotor 1, is linearity at the tooth central side at two ends., obtain the extended line and the intersection points B 1 of groove center line OA1 of non-concentric circles arcuation part here, the distance of intersection points B 1 and rotor center O is made as b1.In addition, obtain the extended line of straight line portion of tooth front end and the intersection points B 2 of groove center line OA2, the distance of intersection points B 2 and rotor center O is made as b2.At this moment, the mean value of establishing b1 and b2 is b, and establishing rotor center O is c to the minimum range of tooth front end, the noise of the electric rotating machine that actual measurement b/c is different.
Noise measured result when Fig. 8 illustrates the tooth front end shape that forms as shown in Figure 8.From this figure as can be known, under such odontoid, as be 1.11≤(b/c)≤1.16, then also can reduce noise.
Figure 10 illustrates the stator core section configuration of the permanent magnet rotary electric machine of another embodiment of the present invention.In Figure 10, the front end shape of tooth 8 forms linearity at tooth center and two ends, but different with the two ends gradient at the tooth center., obtain extended line and the intersection points B 1 of groove center line OA1 here, the distance of intersection points B 1 and rotor center O is made as b1 by the linearity at tooth center part.In addition, obtain extended line and the intersection points B 2 of groove center line OA2, the distance of intersection points B 2 and rotor center O is made as b2 by the linearity part of the end side of tooth front end.At this moment, the mean value of establishing b1 and b2 is b, and establishing rotor center O is c to the minimum range of tooth front end, the noise of the electric rotating machine of the shape that actual measurement b/c is different.
Noise measured result when Figure 11 illustrates the tooth front end shape that forms as shown in Figure 10.From this result as can be known, under such odontoid, as be 1.11≤(b/c)≤1.16, then also can reduce noise.
Figure 12 illustrates the stator core section configuration of the permanent magnet rotary electric machine of another embodiment of the present invention.In Figure 12, the front end shape of tooth 8 becomes the shape of combination and a plurality of circular-arc parts of the center O decentraction of rotor 1.That is, tooth front end shape leans on the center for being the circular-arc of center with a P1 tooth 8, and the place, end of tooth 8 is to be the circular-arc of center with a P2 for example., obtain extended line and the intersection points B 1 of groove center line OA1 here, the distance of intersection points B 1 and rotor center O is made as b1 by the non-concentric circles arcuation part at tooth center.In addition, obtain the extended line and the intersection points B 2 of groove center line OA2 by the non-concentric circles arcuation of end side part of tooth front end, the distance of intersection points B 2 and rotor center O is made as b2.At this moment, the mean value of establishing b1 and b2 is b, and establishing rotor center O is c to the minimum range of tooth front end, the noise of the electric rotating machine of the shape that actual measurement b/c is different.
Noise measured result when Figure 13 illustrates the tooth front end shape that forms as shown in Figure 12.As can be seen, under such odontoid, as be 1.11≤(b/c)≤1.16, then also can reduce noise.
Figure 14 illustrates the stator core section configuration of the permanent magnet rotary electric machine of another embodiment of the present invention.In Figure 14, the front end of tooth 8 at the tooth center is and concentric circular-arc of rotor 1, is the circular arc portion and the linearity part of decentraction at the two ends of tooth front end 8a.That is, at the tooth center be with concentric circular-arc of the center O of rotor 1, be the circular-arc part at center and the shape of linearity part with a P for example at the tooth two ends for combination., obtain the intersection points B 1 of the extended line and the groove center line OA1 of the circular-arc part of decentraction here, the distance of intersection points B 1 and rotor center O is made as b1.In addition, obtain the extended line of straight line portion of tooth front end and the intersection points B 2 of groove center line OA2, the distance of intersection points B 2 and rotor center O is made as b2.At this moment, the mean value of establishing b1 and b2 is b, and establishing rotor center O is c to the minimum range of tooth front end, the noise of the electric rotating machine of the shape that actual measurement b/c is different.
Noise measured result when Figure 15 illustrates the tooth front end shape that forms as shown in Figure 14.As can be seen, under such odontoid, as be 1.11≤(b/c)≤1.16, then also can reduce noise.
By above explanation as can be known, the front end shape of tooth 8 as combination and rotor concentric circular-arc, decentraction is circular-arc, reach the linearity part, then can consider various shapes, but except with the concentric circular-arc part of rotor, the mean value b of distance of the extended line of other parts and groove center line and the rotor center minimum range c to the tooth front end is shown, as be 1.11≤(b/c)≤1.16, then can reduce noise.
Figure 16 is the structural map section of compressor of the present invention.Compressor stands on the end plate 11 of fixed scroll member 10 by engagement scroll scroll wraps 12 forms with the scroll scroll wraps 15 that stands on the end plate 14 that rotates scroll element 13, by make by crank axle 4 rotation scroll element 13 be rotated motion, thereby carry out compressed action.The discharge chambe that is positioned at outside diameter in the discharge chambe 16 (16a, 16b...) that is formed by fixed scroll member 10 and rotation scroll element 13 moves along with the center that rotatablely moves towards two scroll elements 10,13, and volume dwindles gradually.The center that discharge chambe 16a, 16b arrive two scroll elements 10,13 is nearby the time, outlet 17 discharges of the Compressed Gas in two discharge chambes 16 from being communicated with discharge chambe 16.The Compressed Gas of discharging arrives the compression container 19 of frame 18 bottoms by the gas passage (not shown) of being located at fixed scroll member 10 and frame 18, is discharged to outside the compressor from the dump valve 20 of the sidewall of being located at compression container 19.In addition, in this compressor, will be encapsulated in the drive motor 21 in the compression container 19,, carry out compressed action by speed of gyration revolution by the frequency converter (not shown) control that is provided with separately.Here, the permanent magnet magnetic field synchronous motor of drive motor 21 for constituting by stator 5 and rotor 1.
Sound when compressor drives in order to reduce use acoustic material around compressor, but this has influenced the recirculation usability.Therefore, as use permanent magnet rotary electric machine shown in the present, then do not need acoustic material, can improve the recirculation usability.
The possibility of utilizing on the industry
As described above, the present invention is suitable for being provided in the permanent magnet rotary electric machine in order to fall Hang down the sound when turning round and use low noise permanent magnet rotary electric machine and the compression of using it Machine.
Claims (13)
1. the permanent magnet rotary electric machine that the 5KW level is following has stator and rotor; This stator has a plurality of teeth in stator core, forms armature winding in this stator core; This rotor inserts in the hole at a plurality of permanent magnets that are formed at rotor core and accommodates permanent magnet;
It is characterized in that: the shape of the tooth front end of said stator iron core is with circular-arc part and at least 1 the shape that linearity part combined concentric with above-mentioned rotor core; If the extended line of each linearity part of this tooth front end and each intersection point of groove center line are b apart from the mean value of the distance of rotor center, this tooth front end with the concentric part of this rotor core be c apart from the distance of rotor center, then satisfy 1.11≤(b/c)≤1.16 relation.
2. the permanent magnet rotary electric machine that the 5KW level is following has stator and rotor, and the number of poles of permanent magnet is 4 utmost points; This stator has 6 teeth in stator core, forms armature winding in this stator core; This rotor inserts in the hole at a plurality of permanent magnets that are formed at rotor core and accommodates permanent magnet;
It is characterized in that: the shape of the tooth front end of said stator iron core is with part and at least 1 the shape that linearity part combined concentric with above-mentioned rotor core; If the extended line of each linearity part of this tooth front end and each intersection point of groove center line are b apart from the mean value of the distance of rotor center, this tooth front end with the concentric part of this rotor core be c apart from the distance of rotor center, then satisfy 1.11≤(b/c)≤1.16 relation.
3. the permanent magnet rotary electric machine that the 5KW level is following has stator and rotor; This stator has a plurality of teeth in stator core, forms armature winding in this stator core; This rotor inserts in the hole at a plurality of permanent magnets that are formed at rotor core and accommodates permanent magnet;
It is characterized in that: the shape of the tooth front end of said stator iron core is with part and at least 1 the shape that non-concentric circles arcuation part combined concentric with above-mentioned rotor core; If the extended line of the internal side diameter shape of the non-concentric circles arcuation part of each of this tooth front end and each intersection point of groove center line are b apart from the mean value of the distance of rotor center, this tooth front end with the concentric part of this rotor core be c apart from the distance of rotor center, then satisfy 1.11≤(b/c)≤1.16 relation.
4. the permanent magnet rotary electric machine that 5KW level as claimed in claim 3 is following is characterized in that the number of poles of permanent magnet is 4 utmost points; Described a plurality of tooth is 6 teeth.
5. the permanent magnet rotary electric machine that the 5KW level is following has stator and rotor; This stator has a plurality of teeth in stator core, forms armature winding in this stator core; This rotor inserts in the hole at a plurality of permanent magnets that are formed at rotor core and accommodates permanent magnet;
It is characterized in that: the shape of the tooth front end of said stator iron core is with at least 1 circular-arc part and at least 1 shape that the linearity part is combined with above-mentioned rotor core decentraction; If each extended line of this tooth leading section shape and each intersection point of groove center line are b apart from the mean value of the distance of rotor center, this tooth front end is c apart from the beeline of rotor center, then satisfies 1.11≤(b/c)≤1.16 relation.
6. the permanent magnet rotary electric machine that 5KW level as claimed in claim 5 is following is characterized in that the number of poles of permanent magnet is 4 utmost points; Described a plurality of tooth is 6 teeth.
7. the permanent magnet rotary electric machine that the 5KW level is following has stator and rotor; This stator has a plurality of teeth in stator core, forms armature winding in this stator core; This rotor inserts in the hole at a plurality of permanent magnets that are formed at rotor core and accommodates permanent magnet;
It is characterized in that: the shape that is shaped as a plurality of linearity parts of combination of the tooth front end of said stator iron core; If each extended line of this tooth leading section shape and each intersection point of groove center line are b apart from the mean value of the distance of rotor center, this tooth front end is c apart from the beeline of rotor center, then satisfies 1.11≤(b/c)≤1.16 relation.
8. the permanent magnet rotary electric machine that 5KW level as claimed in claim 7 is following is characterized in that the number of poles of permanent magnet is 4 utmost points; Described a plurality of tooth is 6 teeth.
9. the permanent magnet rotary electric machine that the 5KW level is following has stator and rotor; This stator has a plurality of teeth in stator core, forms armature winding in this stator core; This rotor inserts in the hole at a plurality of permanent magnets that are formed at rotor core and accommodates permanent magnet;
It is characterized in that: the shape that is shaped as the circular-arc part that makes up a plurality of and rotor core decentraction of the tooth front end of said stator iron core; If each extended line that this tooth leading section is circular-arc and each intersection point of groove center line are b apart from the mean value of the distance of rotor center, this tooth front end is c apart from the beeline of rotor center, then satisfies 1.11≤(b/c)≤1.16 relation.
10. the permanent magnet rotary electric machine that 5KW level as claimed in claim 9 is following is characterized in that the number of poles of permanent magnet is 4 utmost points; Described a plurality of tooth is 6 teeth.
11. the permanent magnet rotary electric machine that the 5KW level is following has stator and rotor; This stator has a plurality of teeth in stator core, forms armature winding in this stator core; This rotor inserts in the hole at a plurality of permanent magnets that are formed at rotor core and accommodates permanent magnet;
It is characterized in that: the shape of the tooth front end of said stator iron core be with the circular-arc part of the concentric part of above-mentioned rotor core, at least 1 decentraction, and at least 1 shape that the linearity part is combined; If each extended line of the shape except that concentric circles arcuation part of this tooth front end and each intersection point of groove center line are b apart from the mean value of the distance of rotor center, this tooth front end is c apart from the beeline of rotor center, then satisfies 1.11≤(b/c)≤1.16 relation.
12. the permanent magnet rotary electric machine that 5KW level as claimed in claim 11 is following is characterized in that the number of poles of permanent magnet is 4 utmost points; Described a plurality of tooth is 6 teeth.
13. a compressor is driven by any one permanent magnet rotary electric machine below the described 5KW level in the claim 1～12.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP49561/01 | 2001-02-26 | ||
| JP2001049561A JP2002252956A (en) | 2001-02-26 | 2001-02-26 | Permanent magnet rotation motor and compressor using the same |
| JP49561/2001 | 2001-02-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1491475A CN1491475A (en) | 2004-04-21 |
| CN100342625C true CN100342625C (en) | 2007-10-10 |
Family
ID=18910647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB028046455A Expired - Fee Related CN100342625C (en) | 2001-02-26 | 2002-02-22 | Permanent magnet type rotary machine and compressor comprising it |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2002252956A (en) |
| CN (1) | CN100342625C (en) |
| WO (1) | WO2002073780A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002291179A (en) * | 2001-03-27 | 2002-10-04 | Matsushita Seiko Co Ltd | Stator core of half-pitch capacitor induction motor |
| JP2008099418A (en) * | 2006-10-11 | 2008-04-24 | Matsushita Electric Ind Co Ltd | Permanent magnet embedded type motor |
| SE530697C2 (en) * | 2006-12-19 | 2008-08-19 | Bae Systems Haegglunds Ab | Rotor for an electric motor, rotor plates for the construction of the rotor, and an electric motor with such a rotor |
| JP2010115019A (en) * | 2008-11-06 | 2010-05-20 | Nippon Densan Corp | Pump motor |
| JP5292271B2 (en) * | 2009-12-24 | 2013-09-18 | 株式会社日立製作所 | Permanent magnet rotating electric machine |
| JP2012120326A (en) * | 2010-11-30 | 2012-06-21 | Fujitsu General Ltd | Interior magnet rotor, motor, and method for assembling motor |
| CN103078465A (en) * | 2012-12-31 | 2013-05-01 | 浙江迈雷科技有限公司 | Permanent magnet synchronous motor used for air conditioner compressor |
| JP2016134978A (en) * | 2015-01-19 | 2016-07-25 | 三菱電機株式会社 | Fuel pump and manufacturing method of fuel pump |
| JP2018170903A (en) * | 2017-03-30 | 2018-11-01 | 日立オートモティブシステムズ株式会社 | Stator of rotary electric machine |
| US11496015B2 (en) * | 2019-06-03 | 2022-11-08 | GM Global Technology Operations LLC | Electric machine with stator tooth tip profile for reducing winding-based power losses |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03106869U (en) * | 1990-02-16 | 1991-11-05 | ||
| JPH08322167A (en) * | 1995-05-26 | 1996-12-03 | Matsushita Electric Ind Co Ltd | Motor with core |
| JPH10288180A (en) * | 1997-04-11 | 1998-10-27 | Toshiba Corp | Compressor |
| JPH1198792A (en) * | 1997-09-18 | 1999-04-09 | Matsushita Electric Ind Co Ltd | Inner rotor motor |
| JP2000333423A (en) * | 1999-05-21 | 2000-11-30 | Matsushita Electric Ind Co Ltd | Permanent magnet motor |
-
2001
- 2001-02-26 JP JP2001049561A patent/JP2002252956A/en active Pending
-
2002
- 2002-02-22 WO PCT/JP2002/001613 patent/WO2002073780A1/en active Application Filing
- 2002-02-22 CN CNB028046455A patent/CN100342625C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03106869U (en) * | 1990-02-16 | 1991-11-05 | ||
| JPH08322167A (en) * | 1995-05-26 | 1996-12-03 | Matsushita Electric Ind Co Ltd | Motor with core |
| JPH10288180A (en) * | 1997-04-11 | 1998-10-27 | Toshiba Corp | Compressor |
| JPH1198792A (en) * | 1997-09-18 | 1999-04-09 | Matsushita Electric Ind Co Ltd | Inner rotor motor |
| JP2000333423A (en) * | 1999-05-21 | 2000-11-30 | Matsushita Electric Ind Co Ltd | Permanent magnet motor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2002073780A1 (en) | 2002-09-19 |
| CN1491475A (en) | 2004-04-21 |
| JP2002252956A (en) | 2002-09-06 |
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