CN1322654C - Stator iron core of rotating electric machine and stator thereof, and rotating electric machine using same - Google Patents
Stator iron core of rotating electric machine and stator thereof, and rotating electric machine using same Download PDFInfo
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- CN1322654C CN1322654C CNB021431531A CN02143153A CN1322654C CN 1322654 C CN1322654 C CN 1322654C CN B021431531 A CNB021431531 A CN B021431531A CN 02143153 A CN02143153 A CN 02143153A CN 1322654 C CN1322654 C CN 1322654C
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Abstract
The present invention disclosed a stator core of rotating electric machine and a stator. An outside shape of a stator core body 10 is a polygon which has four or more even number of corners and whose respective diagonal sides L1 and L2 have asymmetrical lengths. In addition, at least two planes are mounted for installing the stator core body 10 to the installing seat 12 in the installing location. In this way, the vibration leaded by the electromagnetism power which is produced by the running of rotating electric machine can be restrained to sufficiently effectively reduce vibration and noise.
Description
Technical field
The present invention relates in electric rotating machines such as motor, generator, synchronous motor for example the electric rotating machine that particularly can reduce vibration and noise fully effectively stator core and stator and use their electric rotating machine.
Background technology
In the past, as one of electric rotating machine, known have a for example induction motor.
Figure 1A is the skiagraph that the configuration example of this existing induction motor is shown.
Shown in Figure 1A, stator 1 is by rotor frame 2 and cooperate the stator core 3 of being fixed in this rotor frame 2 to constitute.
In addition, on by the rotating shaft 6 of bearing 5 supportings, rotor core 7 formation rotors 4 are installed.
, recently, the situation that such induction motor carries out speed control is become more and more by inverter (inverter).
Yet, in service in the speed control that adopts inverter, because speed changes, so, consistent and covibration occurs as the eigentone of the stator core 3 of the structure system of the frequency of electromagnetic force and induction motor, as to exist the possibility of big vibration of generation and noise to become very high problem.In addition, because velocity variations, so, resonance point can not be avoided.
That is, in the running of electric rotating machine, according to the distribution of electromagnetic force of stator core 3, the elliptical vibration pattern is such shown in the double dot dash line among Figure 1B, and vibration mode 8 takes place.The vibration mode 8 of this stator core 3 is turned round in the running of electric rotating machine, and when being delivered to rotor frame 2, this rotor frame 2 stretches repeatedly and compresses.Like this, produce strain, become the reason of the generation vibration of electric rotating machine integral body at rotor frame 2.
Yet, in existing electric rotating machine as described above, have the following problem that should solve like that.
(a) stator core 3 is cylindric such symmetric figure, can not avoid in obviously vibrations of the elliptical vibration pattern 8 of the stator core 3 of the magnetomotive force distribution generation of the stator core 3 of appearance such as jumbo electric rotating machines, the vibration that causes electric rotating machine increases, the stress of each one of electric rotating machine is increased, become a reason of the lost of life.
(b) for the rigidity of the stator core 3 that obtains to bear electromagnetic force to reduce vibration and noise, have the method for the external diameter that increases stator core 3, but can cause electric rotating machine to maximize and the weight increase.
(c) general eigentone is represented by formula as described above (f1).
Wherein, f: eigentone, K: rigidity, M: quality.
As by above-mentioned (b) explanation, in the occasion that has improved rigidity K, owing to mass M also increases, so eigentone changes not very big, avoids the effect of resonance point less.
(d) maximize and weight when big when stator core 3, need a large amount of materials useds certainly, its manufacturing equipment and experimental rig etc. also maximize.For this reason, the manufacturing efficient of electric rotating machine is also poor, and becomes expensive.
Summary of the invention
The vibration that the object of the present invention is to provide a kind of electromagnetic force that takes place when suppressing the electric rotating machine operation to cause comes fully to reduce effectively to vibrate stator core and the stator with the electric rotating machine of noise.
In addition, the object of the present invention is to provide a kind of can by small-scale manufacturing testing equipment realize the production system, to make efficient high and can the low-cost electric rotating machine of making.
The stator core of a kind of electric rotating machine of the present invention, it is characterized in that: the external diameter of said stator body unshakable in one's determination is shaped as polygonal, its angle number is the odd number more than or equal to 3, and the rib be used for this stator core body is supported to the supporting usefulness in supporting place is installed on the limit that respectively becomes the plane, the rib and the stator core body of above-mentioned supporting usefulness is integrated, make said stator body skew unshakable in one's determination ground lamination.
In addition, the stator core of a kind of electric rotating machine of the present invention, it is characterized in that: the external diameter of said stator body unshakable in one's determination is shaped as polygonal, its angle number is the even number more than or equal to 4, and the rib be used for this stator core body is supported to the supporting usefulness in supporting place is installed on the limit that respectively becomes the plane, the rib and the stator core body of above-mentioned supporting usefulness is integrated, make said stator body skew unshakable in one's determination ground lamination.
The stator core of the electric rotating machine of the 1st aspect of the present invention is characterised in that: the external diameter shape of said stator body unshakable in one's determination forms polygonal, and its angle number is the even number more than or equal to 4, and it is asymmetric respectively to become the length on limit at diagonal angle.
In addition, the stator of the electric rotating machine of the 2nd aspect of the present invention is characterised in that: 2 faces that are provided with at least in the stator core of the electric rotating machine aspect the above-mentioned the 1st are used for this stator core body is installed to the installation seat of installation site.
Here, the installation that also can make the said stator iron core is changed to 4/3 times of center countershaft radius of the mean outside diameter of said stator iron core and distance at the bottom of the teeth groove of said stator iron core with the seat.
In addition, the stator core of the electric rotating machine of the 3rd aspect of the present invention is characterised in that: the external diameter of said stator body unshakable in one's determination is shaped as polygonal, its angle number is the odd number more than or equal to 3, and the rib that is used for this stator core body is supported to the supporting usefulness in supporting place is installed on the limit that respectively becomes the plane.
The stator core of the electric rotating machine of the 4th aspect of the present invention is characterised in that: the external diameter shape of said stator body unshakable in one's determination forms polygonal, its angle number is the even number more than or equal to 4, and the rib that is used for this stator core body is supported to the supporting usefulness in supporting place is installed on the limit that respectively becomes the plane.
In addition, the stator of the electric rotating machine of the 5th aspect of the present invention is characterised in that: the rib by above-mentioned supporting usefulness joins the stator core of the electric rotating machine of above-mentioned the 3rd aspect to rotor frame.
In addition, the stator of the electric rotating machine of the 6th aspect of the present invention is characterised in that: the rib by above-mentioned supporting usefulness joins the stator core of the electric rotating machine of above-mentioned the 4th aspect to rotor frame.
Here, also can the rib and the stator core body of above-mentioned supporting usefulness is integrated.In addition, also can make said stator body skew unshakable in one's determination ground lamination.In addition, rib and setting height(from bottom) rotor frame that also can make the supporting usefulness that is installed on stator core for 4/3 times of the center countershaft radius of the distance from said stator center unshakable in one's determination to external diameter and said stator center unshakable in one's determination distance at the bottom of the teeth groove of said stator iron core (promptly be radius be this two distance and 1/2nd, the center is 4/3 times of radius of the axle of said stator core center).
In addition, the electric rotating machine that is made of stator and rotor of the 7th aspect of the present invention is characterised in that: said stator is made of the stator core of the either side in above-mentioned the 1st aspect, the 3rd aspect, the 4th aspect.
In addition, the electric rotating machine that is made of stator and rotor of the 8th aspect of the present invention is characterised in that: said stator is the stator of the either side in above-mentioned the 2nd aspect, the 5th aspect, the 6th aspect.
Therefore, aspect the of the present invention the 1st, the external diameter shape of the said stator of the stator core of electric rotating machine body unshakable in one's determination forms polygonal, its angle number is the even number more than or equal to 4, and it is asymmetric respectively to become the length on limit at diagonal angle, like this, even occasion at the structure of even number dihedral, the transfer of vibration that produces in the electromagnetic force of the internal diameter that acts on stator core is offset electromagnetic mode by natural mode during to the external diameter of stator core, can reduce the vibration and the noise of electric rotating machine integral body.
In addition, aspect the of the present invention the 2nd, in stator core the installation seat that 2 faces are used for this stator core body is installed to the installation site is set at least, like this, the length on limit that respectively becomes the diagonal angle is asymmetric, and is the same with the occasion of above-mentioned the 1st aspect, and the transfer of vibration that produces in the electromagnetic force of the internal diameter that acts on stator core is during to the external diameter of stator core, offset electromagnetic mode by natural mode, can reduce the vibration and the noise of electric rotating machine integral body.
In addition, owing to will install with being set to stator core, so, not only have good stability, and can make eigentone off resonance with installation system.
As the method that makes the eigentone off resonance, as distance, can change eigentone here, from installed surface to the stator core center by Change Example.
In addition, installation by making stator core is changed to 4/3 times of center countershaft radius of the distance at the bottom of the teeth groove of the mean outside diameter of said stator iron core and said stator iron core with the seat, for this position, because the displacement of the tangential direction during the oval pattern distortion that does not produce that the electromagnetic force of stator core causes, so, can further suppress to be delivered to the vibration of the installation portion of stator core.
In addition, aspect the of the present invention the 3rd, the external diameter of stator core body is shaped as polygonal, its angle number is the odd number more than or equal to 3, and the rib be used for this stator core body is supported to the supporting usefulness in supporting place is installed on the limit that respectively becomes the plane, like this, the effect of being offset electromagnetic mode by natural mode further increases, and can further reduce the vibration and the noise of electric rotating machine.
In addition, the supporting by stator core can realize the high rigidization of stator integral body with rib, and acquisition can be born the rigidity of the stator core of electromagnetic force, can make electric rotating machine integral miniaturization and lightweight.
In addition, the invention the 4th aspect, the external diameter shape of stator core body forms polygonal, and its angle number is the even number more than or equal to 4, and the rib that is used for this stator core body is supported to the supporting usefulness in supporting place is installed on the limit that respectively becomes the plane, like this, not only have the effect the same, and in the occasion of odd number angle with the occasion of the 3rd aspect, with apex configuration to up and down either party, so the occasion of even number dihedral is more favourable to miniaturization.
In addition, aspect the of the present invention the 5th, join stator core to rotor frame, like this, not only have the effect the same, and can enlarge the design freedom of the face shaping of electric rotating machine with the occasion of the 3rd aspect by the rib that supports usefulness.
In addition, owing between stator core and rotor frame, form the space, so, can utilize this space to improve cooling performances such as ventilation.Like this, further miniaturization and lightweight.
In addition, because the temperature of the rotor frame of electric rotating machine also can reduce, so, can be safer and can improve to environment, but life-saving also.
In addition, aspect the of the present invention the 6th, rib by above-mentioned supporting usefulness joins stator core to rotor frame, like this, not only can obtain the effect the same with the occasion of above-mentioned the 5th aspect, and, by the rib of configuration supporting usefulness, even symmetry also can be offset electromagnetic mode by natural mode up and down.
In addition, in the occasion of odd number angle, with apex configuration to up and down either party, so the occasion of even number dihedral is more favourable to miniaturization.
Integrated by the rib and the stator core body that make supporting usefulness, not only can obtain the effect the same with the occasion of above-mentioned the 3rd, the 4th aspect, and, because rigidity improves and do not have a junction surface, so, also can improve thermal diffusivity.
In addition, by making stator core body skew ground lamination, thereby make the teeth groove skew (reversing) of stator core or stator core, can disperse electromagnetic force.
In addition, rib and setting height(from bottom) rotor frame that makes the supporting usefulness that is installed on stator core is 4/3 times of the center countershaft radius of the distance from the stator core center to external diameter and distance at the bottom of the teeth groove of stator core, for this position, because the displacement of the tangential direction during the oval pattern distortion that does not produce that the electromagnetic force of stator core causes, so, can further suppress to be delivered to the vibration of the installation portion of stator core.
In addition, aspect the of the present invention the 7th, stator is made of the stator core of the either side in above-mentioned the 1st aspect, the 3rd aspect, the 4th aspect, like this, even for big capacity also can be realized the miniaturization and the high rigidity of electric rotating machine, the production system of electric rotating machine also can realize by small-scale manufacturing and testing equipment, so, manufacturing efficient height, and can be by the low cost manufacturing.
In addition, aspect the of the present invention the 8th, stator is the stator of the either side in above-mentioned the 2nd aspect, the 5th aspect, the 6th aspect, like this, even for big capacity also can be realized the miniaturization and the high rigidity of electric rotating machine, the production system of electric rotating machine also can realize by small-scale manufacturing and testing equipment, so, manufacturing efficient height, and can be by the low cost manufacturing.
Other purpose of the present invention and advantage will further specify in the back, and according to this explanation, a part will be conspicuous, maybe can understand by practice of the present invention.Objects and advantages of the present invention can realize by means and the combination of pointing out in detail.
Description of drawings
Figure 1A and 1B are skiagraph and the loop diagram that a configuration example of existing induction motor is shown.
Fig. 2 A and 2B are the figure that is used to illustrate the mechanism that noise takes place.
Fig. 3 is the figure that is used to illustrate the annulus vibration mode.
Fig. 4 A and 4B are the figure that is used to illustrate electromagnetic mode.
Fig. 5 A and 5B are the figure that is used for illustrating from the relation of electromagnetic force and natural mode vibrative structure.
Fig. 6 be illustrate the present invention the 1st embodiment the perspective view of whole configuration example of stator core of electric rotating machine.
Fig. 7 A and 7B are the perspective view of whole configuration example of stator that the electric rotating machine of the present invention the 2nd embodiment is shown.
Fig. 8 is the perspective view of whole configuration example of stator that the electric rotating machine of the present invention the 3rd embodiment is shown.
Fig. 9 A and 9B are the front elevation and the side view of whole configuration example of stator core that the electric rotating machine of the present invention the 4th embodiment is shown.
Figure 10 A and 10B are the front elevation and the side view of whole configuration example of stator core that the electric rotating machine of the present invention the 5th embodiment is shown.
Figure 11 is the front elevation of whole configuration example of stator that the electric rotating machine of the present invention the 6th embodiment is shown.
Figure 12 is the front elevation of whole configuration example of stator that the electric rotating machine of the present invention the 7th embodiment is shown.
Figure 13 is the front elevation of whole configuration example of stator core that the electric rotating machine of the present invention the 8th embodiment is shown.
Figure 14 is the front elevation of whole configuration example of stator core that the electric rotating machine of the present invention the 9th embodiment is shown.
Figure 15 A and 15B are the front elevation and the side view of whole configuration example of stator core that the electric rotating machine of the present invention the 10th embodiment is shown.
Figure 16 A and 16B are the front elevation and the side view of whole configuration example of stator core that the electric rotating machine of the present invention the 11st embodiment is shown.
Figure 17 is the front elevation of whole configuration example of stator that the electric rotating machine of the present invention the 12nd embodiment is shown.
Figure 18 is the front elevation of whole configuration example of stator core that the electric rotating machine of the present invention the 13rd embodiment is shown.
Embodiment
At first, noise genesis mechanism as the prerequisite of a thinking of the present invention is described.
Fig. 2 A and 2B are the figure that is used to illustrate the mechanism of vibration and noise generation.
The genesis mechanism of this vibration and noise is such shown in Fig. 2 A and 2B, in the frequency of the electromagnetic force of the air gap that acts on rotor core and stator core and the moving occasion of eigentone resonance of stator core, the rotor frame high vibration, this vibration diffuses in the air, produces noise.
The deformation pattern of the rotor frame that this electromagnetic force produces is generally the ellipse (n=2) of annulus vibration mode.The magnetomotive force of stator core distributes and may produce by the such vibration mode shown in the thick line among the figure.The vibration mode of this stator core is in the revolution in service of electric rotating machine, and when being delivered to rotor frame, rotor frame stretches repeatedly and compresses.Like this, on rotor frame, produce strain, or become the reason that the electric rotating machine body vibration takes place.
This annulus vibration mode is the pattern that produces the external diameter distortion diametrically as shown in Figure 3, shrinks (pattern n=0), go forward side by side (pattern n=1), oval (pattern n=2), triangle (pattern n=3), tetragonal (pattern n=4), pentagon expressions such as (pattern n=5) by expanding.
In the past, the rotor frame of motor in most of the cases is the left-right symmetric shape.
For this reason, the deformation vibration that results from the ellipse (pattern n=2) of stator core is easy to be delivered to rotor frame, and the occasion in electromagnetic force and stator core resonance can produce big vibration and noise.
For this reason, the distortion for the ellipse (pattern n=2) that reduces vibration and the noise in such motor, need make the annulus vibration that betides stator core is difficult to be delivered to rotor frame.
For example, be difficult to be deformed into oval structure, make the external diameter vibration be difficult for producing, can reduce vibration and noise by rotor frame is become.
Below, specify the principle that noise takes place.
For electromagnetic force, owing to be rotating magnetic field, so, when when a certain position of stator core is watched, shown in Fig. 4 A and 4B, like that, produce as forced vibration at the internal diameter of stator core and to press n=2 (ellipse) n=4 (quadrangle) ... turn round in time and the pattern that changes.
When being represented by formula, the pattern of above-mentioned electromagnetic force can represent by formula (1).
f
M＝A·cos(ωt-Mθ) …(1)
Wherein, f
M: electromagnetic force, A: the amplitude of electromagnetic force, ω: the angular oscillation frequency of electromagnetic force, M: electromagnetic force pattern number of times, θ: mechanical angle, t: time.
On the other hand, the eigentone of stator core
NWhen only considering the in plane vibration of annulus, represent by formula (2).
N＝Φ
N·cosN(θ-α) …(2)
Wherein,
N: the eigentone of annulus, Φ
N: the amplitude of eigentone, N: the number of times of eigentone, α: phase place.
Therefore, by above-mentioned formula (1) and formula (2), when the vibration amplitude of establishing the annulus that the electromagnetic force that acts on motor produces is Z, can represent by formula (3).
z＝f
M·
N …(3)
This is owing to being the vibration of certain angle θ, so the vibration amplitude Z of annulus integral body passes through about the θ edge complete all to the annulus integration, thereby can obtain according to formula (4).
That is, when describing with concrete numerical value, the vibration Z of the generation of eigentone N=2 and electromagnetic force pattern M=2 like that, can obtain according to vector product shown in Fig. 5 A.
Here, vector outwardly radially is for just, and vector inwardly is for negative.
For counting of calculating, in schematically calculating, representational 8 are calculated.
The vibration of Z=4 for taking place in the value of vector product.
The vibration Z that electromagnetic force pattern M=2 and eigentone N=3 take place is such shown in Fig. 5 B, can obtain according to vector product.
Under the combination of electromagnetic force pattern M=2 and eigentone N=3, Z=0 does not vibrate.
That is such relation shows that eigentone and electromagnetic force pattern are inconsistent for not producing the condition of vibration and noise.
Deflection and 1/ (mode number) when generally speaking, stator core is out of shape
3Reduce pro rata, so the big more then vibration of mode number is low more.
That is, because the compulsory mode that above-mentioned electromagnetic force forms is M=2 (ellipse), so, be shaped as annulus vibration mode n=3,5,7...... by the external diameter that makes stator core, vibration is cancelled out each other, can make pattern inconsistent, the noise that can reduce to vibrate.
As its method, make the shape of stator core asymmetric.
Because helping helping of the power of the shaking force mode M that shakes at the electromagnetism of stator core induction is the annulus vibration mode M=2,4,6,8 of even number, so, be shaped as annulus vibration mode n=3,5,7...... by the external diameter that makes stator core, can make pattern inconsistent.
Such method also can be asymmetric and realized by making being shaped as of stator core.
Below, with reference to the embodiments of the invention of description of drawings based on idea as described above.
Fig. 6 is the perspective view of whole configuration example of stator core that the electric rotating machine of present embodiment is shown.
The integral body of electric rotating machine constitutes the same formation of prior art with Fig. 1, so, same section is adopted same-sign, omit its explanation,, different parts only is described here.
That is, as shown in Figure 6, for the stator core 10 of the electric rotating machine of present embodiment, the external diameter shape of stator core 10 bodies is formed polygonal, its angle number is the even number more than 4, and the limit that respectively becomes the diagonal angle is that the length of L1, L2 in this example is asymmetric.
In the stator core of the electric rotating machine of the present embodiment that constitutes like this, the external diameter shape of stator core 10 bodies is formed polygonal, its angle number is the even number more than 4, and the limit that respectively becomes the diagonal angle is that the length of L1, L2 in this example is asymmetric, like this, even in the occasion of the structure of even number dihedral, when the electromagnetic force vibration of the internal diameter that acts on stator core 10 is delivered to the external diameter of stator core 10, offset electromagnetic mode by natural mode, can reduce the vibration and the noise of electric rotating machine integral body.
As described above, in the stator core of the electric rotating machine of present embodiment, the vibration that the electromagnetic force that produces when suppressing the electric rotating machine operation causes can reduce vibration and noise fully effectively.
(the 2nd embodiment)
Fig. 7 A is the perspective view of whole configuration example of stator that the electric rotating machine of present embodiment is shown, and the part identical with Fig. 1 adopted same-sign, omits its explanation,, different parts only is described here.
That is, shown in Fig. 7 A, the stator of the electric rotating machine of present embodiment is provided with the installation seat 12 that 2 faces are used for this stator core 11 bodies are installed to the installation site at least in the stator core 11 of the electric rotating machine of the formation with the 1st embodiment shown in Figure 1.
The outer circumferential side that also can be stator core 11 with seat 12 is installed.
In the stator of the electric rotating machine of the present embodiment that constitutes like this, by the installation seat 12 that 2 faces are used for this stator core 11 bodies are installed to the installation site is set in stator core 11 at least, for example L1, L2 are asymmetric to make the limit that respectively becomes the diagonal angle, the same with the occasion of above-mentioned the 1st embodiment, the transfer of vibration that produces with the electromagnetic force of the internal diameter that acts on stator core 11 is during to the external diameter of stator core 11, offset electromagnetic mode by natural mode, can reduce the vibration and the noise of electric rotating machine integral body.
That is, according to the vibration mode of Fig. 7 B, eigentone is represented by following such formula (f2).
Wherein, E: yang type modulus, I: second moment of area, Le: the distance from the installed surface to the center of gravity, K: quality.
For eigentone is changed, can be in addition corresponding by the distance that changes from the installed surface of stator core 11 to center of gravity.
Like this, the same with the occasion of above-mentioned the 1st embodiment, the transfer of vibration that produces in the electromagnetic force of the internal diameter that acts on stator core 11 is offset electromagnetic mode by natural mode during to the external diameter of stator core 11, can reduce the vibration and the noise of electric rotating machine integral body.
In addition, install with seat 12 by being provided with in stator core 11, good stability not only, and can make and install the eigentone off resonance of system.
As the method that makes the eigentone off resonance, as distance, can change eigentone from installed surface to the stator core center by Change Example.
As described above, in the stator of the electric rotating machine of present embodiment, the vibration that the electromagnetic force that produces in the time of can suppressing the electric rotating machine operation causes reduces vibration and noise fully effectively.
In addition, good stability not only, and can make and install the eigentone off resonance of system.
(the 3rd form of implementation)
Fig. 8 is the perspective view of whole configuration example of stator that the electric rotating machine of present embodiment is shown, and the part identical with Fig. 7 adopted same-sign, omits its explanation,, different parts only is described here.
Promptly, as shown in Figure 8, stator for the electric rotating machine of present embodiment, in the stator of the electric rotating machine of formation with above-mentioned the 2nd embodiment shown in Figure 7, the installation that makes stator core 11 be the mean outside diameter R2 of stator core 11 with the position of seat 12 with from the center of stator core 11 to the teeth groove of stator core 11 at the bottom of 4/3 times of center countershaft radius of distance R 1 (promptly this center countershaft is, the center is said stator 11 centers unshakable in one's determination, radius be the mean outside diameter R2 of said stator iron core 11 and from stator core 11 centers to the teeth groove of stator core 11 at the bottom of distance R 1 and 1/2 axle).
In the stator of the electric rotating machine of above such present embodiment that constitutes, the installation that makes stator core 11 is the mean outside diameter R2 of stator core 11 and 4/3 times of the center countershaft radius of distance R 1 at the bottom of the teeth groove of stator core 11 with the position of seat 12, like this, for this position, because the displacement of the tangential direction during the oval pattern distortion that does not produce that the electromagnetic force of stator core 11 causes, so, can further suppress to be delivered to the vibration of the installation portion of stator core 11.
As described above, in the stator of the electric rotating machine of present embodiment, the vibration that the electromagnetic force that takes place in the time of can further suppressing the electric rotating machine operation causes can further reduce vibration and noise fully effectively.
(the 4th embodiment)
Fig. 9 A and 9B are the front elevation and the side view of whole configuration example of stator core that the electric rotating machine of present embodiment is shown.
The integral body of electric rotating machine constitutes the same with the prior art of Fig. 1, so same section adopts same-sign, omits its explanation,, different parts only is described here.
Promptly, such shown in Fig. 9 A and 9B, the external diameter of stator core 13 bodies of the electric rotating machine of present embodiment is shaped as polygonal, its angle number is the odd number more than 3, and for example is used for this stator core 13 bodies are supported to the rib 14 of the supporting usefulness in supporting place on the limit that respectively becomes the plane by installations such as welding.
In the stator core of the electric rotating machine of above such present embodiment that constitutes, the external diameter of stator core 13 bodies is shaped as polygonal, its angle number is the odd number more than 3, and the rib 14 be used for this stator core 13 bodies are supported to the supporting usefulness in supporting place is installed on the limit that respectively becomes the plane, like this, the effect that natural mode is offset electromagnetic mode further increases, and can further reduce the vibration and the noise of electric rotating machine.
In addition, the supporting by stator core 13 can realize the high rigidization of stator integral body with rib 14, and acquisition can be born the rigidity of the stator core 13 of electromagnetic force, can make electric rotating machine integral miniaturization and lightweight.
As described above, in the stator core of the electric rotating machine of present embodiment, the vibration that the electromagnetic force that takes place in the time of can suppressing the electric rotating machine operation causes, more abundant vibration and the noise of reducing effectively.
In addition, can make electric rotating machine integral miniaturization and lightweight.
(the 5th embodiment)
Figure 10 A and 10B are the front elevation and the side view of whole configuration example of stator core that the electric rotating machine of present embodiment is shown.
The integral body of electric rotating machine constitutes the same with the prior art of Fig. 1, so same section adopts same-sign, omits its explanation,, different parts only is described here.
Promptly, such shown in Figure 10 A and 10B, the external diameter of stator core 15 bodies of the electric rotating machine of present embodiment is shaped as polygonal, its angle number is the even number more than 4, and for example is used for this stator core 15 bodies are supported to the rib 16 of the supporting usefulness in supporting place on the limit that respectively becomes the plane by installations such as welding.
In the stator core of the electric rotating machine of above such present embodiment that constitutes, the external diameter of stator core 15 bodies is shaped as polygonal, its angle number is the even number more than 4, and the rib 16 be used for this stator core 15 bodies are supported to the supporting usefulness in supporting place is installed on the limit that respectively becomes the plane, like this, not only have the effect the same with the occasion of above-mentioned the 4th embodiment, and in the occasion of odd number angle, with the either party of apex configuration in up and down, so the occasion of even number dihedral is to the miniaturization advantageous particularly.
As described above, in the stator core of the electric rotating machine of present embodiment, the vibration that the electromagnetic force that takes place in the time of can suppressing the electric rotating machine operation causes, more abundant vibration and the noise of reducing effectively.
In addition, can make electric rotating machine integral miniaturization and lightweight.
(the 6th embodiment)
Figure 11 is the front elevation of whole configuration example of stator that the electric rotating machine of present embodiment is shown, and the part identical with Fig. 9 adopts same-sign, omits its explanation,, different parts only is described here.
That is, as shown in Figure 11, for the stator of the electric rotating machine of present embodiment, the rib 14 by above-mentioned supporting usefulness makes the stator core 13 of the electric rotating machine of the formation with above-mentioned the 4th embodiment shown in Figure 9 engage with rotor frame 17.
In the stator of the electric rotating machine of above such present embodiment that constitutes, rib 14 by supporting usefulness makes stator core 13 engage with rotor frame 17, like this, not only can obtain the effect the same, and can enlarge the design freedom of the face shaping of electric rotating machine with the occasion of above-mentioned the 4th embodiment.
In addition, owing between stator core 13 and rotor frame 17, form the space, so, can utilize this space to improve cooling performances such as ventilation.Like this, can make electric rotating machine whole further miniaturization and lightweight.
In addition, because the temperature of the rotor frame of electric rotating machine also can reduce, so, can be safer and can improve to environment, but life-saving also.
As described above, in the stator of the electric rotating machine of present embodiment, the vibration that the electromagnetic force that takes place in the time of can suppressing the electric rotating machine operation causes, more abundant vibration and the noise of reducing effectively.
In addition, can enlarge the design freedom of the face shaping of electric rotating machine.
In addition, can make electric rotating machine integral miniaturization and lightweight.
In addition, can be safer and can improve to environment, but life-saving also.
(the 7th embodiment)
Figure 12 is the front elevation of whole configuration example of stator that the electric rotating machine of present embodiment is shown, and the part identical with Figure 10 adopts same-sign, omits its explanation,, different parts only is described here.
That is, as shown in Figure 12, for the stator of the electric rotating machine of present embodiment, the rib 16 by above-mentioned supporting usefulness makes the stator core 15 of the electric rotating machine of the formation with above-mentioned the 5th embodiment shown in Figure 10 engage with rotor frame 17.
In the stator of the electric rotating machine of above such present embodiment that constitutes, rib 16 by supporting usefulness makes stator core 15 engage with rotor frame 17, like this, not only can obtain the effect the same with the occasion of above-mentioned the 6th embodiment, and, by the rib 16 of configuration supporting usefulness,, also can offset electromagnetic mode by natural mode even symmetrical up and down.
In addition, in the occasion that is the odd number dihedral, with apex configuration to up and down either party, so the occasion of even number dihedral is to the miniaturization advantageous particularly.
As described above, in the stator of the electric rotating machine of present embodiment, the vibration that the electromagnetic force that takes place in the time of can suppressing the electric rotating machine operation causes, more abundant vibration and the noise of reducing effectively.
In addition, can enlarge the design freedom of the face shaping of electric rotating machine.
In addition, can make electric rotating machine whole further miniaturization and lightweight.
In addition, can be safer and can improve to environment, but life-saving also.
(the 8th embodiment)
Figure 13 is the front elevation of whole configuration example of stator core that the electric rotating machine of present embodiment is shown, and the part identical with Fig. 9 adopts same-sign, omits its explanation,, different parts only is described here.
That is, as shown in Figure 13, the stator core for the electric rotating machine of present embodiment makes the rib 14 of above-mentioned supporting usefulness and stator core 18 bodies integrated in the stator core of the electric rotating machine with the such formation of above-mentioned the 4th embodiment shown in Figure 9.
In the stator core of the electric rotating machine of above such present embodiment that constitutes, integrated by the rib 14 and stator core 18 bodies that make supporting usefulness, not only can obtain the effect the same with the occasion of above-mentioned the 4th embodiment, and, compare with rib 14 other all-in-one-piece occasions, because rigidity improves and does not have a junction surface, so, also can improve thermal diffusivity.
Like this, can further reduce vibration and noise and miniaturization.
In addition, owing to the rib 14 that mounting support is used such as can't help to weld, so, also can suppress the reason of mis-behaves such as weld strain.
As described above, in the stator core of the electric rotating machine of present embodiment, the vibration that the electromagnetic force that takes place in the time of can suppressing the electric rotating machine operation causes, more abundant vibration and the noise of reducing effectively.
In addition, can make electric rotating machine whole further miniaturization and lightweight.
In addition, can improve thermal diffusivity.
The reason that also can suppress in addition, mis-behaves such as weld strain.
(the 9th embodiment)
Figure 14 is the front elevation of whole configuration example of stator core that the electric rotating machine of present embodiment is shown, and the part identical with Figure 10 adopts same-sign, omits its explanation,, different parts only is described here.
That is, as shown in Figure 14, the stator core for the electric rotating machine of present embodiment makes the rib 16 of above-mentioned supporting usefulness and stator core 19 bodies integrated in the stator core of the electric rotating machine with the such formation of above-mentioned the 5th embodiment shown in Figure 10.
In the stator core of the electric rotating machine of above such present embodiment that constitutes, integrated by the rib 16 and stator core 19 bodies that make supporting usefulness, not only can obtain the effect the same with the occasion of above-mentioned the 5th embodiment, and, compare with rib 16 other all-in-one-piece occasions, because rigidity improves and does not have a junction surface, so, also can improve thermal diffusivity.
Like this, can further reduce vibration and noise and miniaturization.
In addition, owing to the rib 16 that mounting support is used such as can't help to weld, so, also can suppress the reason of mis-behaves such as weld strain.
As described above, in the stator core of the electric rotating machine of present embodiment, the vibration that the electromagnetic force that takes place in the time of can suppressing the electric rotating machine operation causes, more abundant vibration and the noise of reducing effectively.
In addition, can make electric rotating machine whole further miniaturization and lightweight.
In addition, can improve thermal diffusivity.
The reason that also can suppress in addition, mis-behaves such as weld strain.
(the 10th embodiment)
Figure 15 A and Figure 15 B are the front elevation and the side view of whole configuration example of stator core that the electric rotating machine of present embodiment is shown, and the part identical with Figure 13 adopts same-sign, omits its explanation,, different parts only is described here.
That is, like that, the stator core for the electric rotating machine of present embodiment makes stator core 18 body skew ground laminations in the stator core of the electric rotating machine with the such formation of above-mentioned the 8th embodiment shown in Figure 13 shown in Figure 15 A and 15B.
In the stator core of the electric rotating machine of above such present embodiment that constitutes, by making stator core 18 body skew ground laminations, not only can obtain the effect the same with the occasion of above-mentioned the 8th embodiment, and, by making the teeth groove skew (reversing) of stator core 18 or stator core 18, can disperse electromagnetic force.
Like this, not only can further reduce vibration and noise, and can reduce the torque ripple etc. in the electric rotating machine running, improve the electrical characteristics of electric rotating machine.
As described above, in the stator core of the electric rotating machine of present embodiment, the vibration that the electromagnetic force that takes place in the time of can suppressing the electric rotating machine operation causes, more abundant vibration and the noise of reducing effectively.
In addition, can make electric rotating machine whole further miniaturization and lightweight.
In addition, can improve thermal diffusivity.
The reason that also can suppress in addition, mis-behaves such as weld strain.
In addition, also can reduce the torque ripple in the electric rotating machine running, improve the electrical characteristics of electric rotating machine.
(the 11st embodiment)
Figure 16 A and 16B are the front elevation and the side view of whole configuration example of stator core that the electric rotating machine of present embodiment is shown, and the part identical with Figure 14 adopts same-sign, omits its explanation,, different parts only is described here.
That is, like that, the stator core for the electric rotating machine of present embodiment makes stator core 19 body skew ground laminations in the stator core of the electric rotating machine with the such formation of above-mentioned the 9th embodiment shown in Figure 14 shown in Figure 16 A and 16B.
In the stator core of the electric rotating machine of above such present embodiment that constitutes, by making stator core 19 body skew ground laminations, not only can obtain the effect the same with the occasion of above-mentioned the 9th embodiment, and, by making the teeth groove skew (reversing) of stator core 19 or stator core 19, can disperse electromagnetic force.
Like this, not only can further reduce vibration and noise, and can reduce the torque ripple etc. in the electric rotating machine running, improve the electrical characteristics of electric rotating machine.
As described above, in the stator core of the electric rotating machine of present embodiment, the vibration that the electromagnetic force that takes place in the time of can suppressing the electric rotating machine operation causes, more abundant vibration and the noise of reducing effectively.
In addition, can make electric rotating machine whole further miniaturization and lightweight.
In addition, can improve thermal diffusivity.
The reason that also can suppress in addition, mis-behaves such as weld strain.
In addition, also can reduce the torque ripple in the electric rotating machine running, improve the electrical characteristics of electric rotating machine.
(the 12nd form of implementation)
Figure 17 is the front elevation of whole configuration example of stator that the electric rotating machine of present embodiment is shown, and the part identical with Figure 11 or Figure 12 adopted same-sign, omits its explanation,, different parts only is described here.
Promptly, as shown in figure 17, stator for the electric rotating machine of present embodiment, have above-mentioned Figure 11 the shown in Figure 12 the 6th or the stator of the electric rotating machine of the formation of the 7th embodiment in, make the rib 14 of the supporting usefulness that is installed on stator core 13 or 15 or 16 and setting height(from bottom) rotor frame 17 for the distance R 2 from stator core 13 or 15 centers to external diameter with from the center of stator core 13 or 15 to the teeth groove of stator core 13 or 15 at the bottom of 4/3 times of center countershaft radius of distance R 1 (this middle is both the center that the center is a said stator unshakable in one's determination 13 or 15, radius be from stator core 13 or 15 centers to external diameter distance R 2 and from the center of stator core 13 or 15 to the teeth groove of stator core 13 or 15 at the bottom of distance R 1 and 1/2 axle, radius that promptly should the center countershaft=(R1+R2)/2).
In the stator of the electric rotating machine of above such present embodiment that constitutes, make the rib 14 of the supporting usefulness that is installed on stator core 13 or 15 or 16 and setting height(from bottom) rotor frame 17 for from stator core 13 or 15 centers to 4/3 times of the center countershaft radius of the distance R 2 of external diameter and distance R 1 at the bottom of the teeth groove of stator core 13 or 15, like this, for this position, because the displacement of the tangential direction during the oval pattern distortion that does not produce that the electromagnetic force of stator core 13 or 15 causes, so, can further suppress to be delivered to the vibration of the installation portion of stator core 13 or 15.
As described above, in the stator of the electric rotating machine of present embodiment, the vibration that the electromagnetic force that takes place in the time of can further suppressing the electric rotating machine operation causes can further reduce vibration and noise fully effectively.
(the 13rd form of implementation)
Figure 18 is the front elevation of whole configuration example of stator core that the electric rotating machine of present embodiment is shown, and the part identical with Figure 13 adopted same-sign, omits its explanation,, different parts only is described here.
Promptly, as shown in figure 18, stator for the electric rotating machine of present embodiment, in the stator core of the electric rotating machine of the formation with above-mentioned the 8th embodiment shown in Figure 13, rib 14 and setting height(from bottom) rotor frame 17 that makes the supporting usefulness that is installed on stator core 18 is 4/3 times of the center countershaft radius of the distance R from stator core 18 centers to external diameter 2 and distance R 1 at the bottom of the teeth groove of stator core 18.
In the stator core of the electric rotating machine of above such present embodiment that constitutes, rib 14 and setting height(from bottom) rotor frame 17 that makes the supporting usefulness that is installed on stator core 18 is 4/3 times of the center countershaft radius of the distance R from stator core 18 centers to external diameter 2 and distance R 1 at the bottom of the teeth groove of stator core 18, like this, for this position, because the displacement of the tangential direction during the oval pattern distortion that does not produce that the electromagnetic force of stator core 18 causes, so, can further suppress to be delivered to the vibration of the installation portion of stator core 18.
As described above, in the stator of the electric rotating machine of present embodiment, the vibration that the electromagnetic force that takes place in the time of can suppressing the electric rotating machine operation causes can further reduce vibration and noise fully effectively.
In addition, for present embodiment,, obtain and the same reduction action effect of above-mentioned occasion even in the stator core of the electric rotating machine of formation, also can similarly use with above-mentioned the 9th embodiment shown in Figure 9.
(the 14th embodiment)
In the present embodiment, for the electric rotating machine with stator 1 and rotor 4, stator 1 is made of the stator core of any embodiment among above-mentioned the 1st, the 4th, the 5th, the 8th, the 9th, the 11st, the 13rd embodiment.
Like this, even also can realize the miniaturization and the high rigidity of electric rotating machine for big capacity, the production system also can realize by small-scale manufacturing and testing equipment, so, make the efficient height, and can be by the low cost manufacturing.
(the 15th embodiment)
At present embodiment,, constitute electric rotating machine as stator 1 by the stator of any embodiment among above-mentioned the 2nd, the 3rd, the 6th, the 7th, the 12nd embodiment for the electric rotating machine that constitutes by stator 1 and rotor 4.
Like this, even also can realize the miniaturization and the high rigidity of electric rotating machine for big capacity, the production system also can realize by small-scale manufacturing and testing equipment, so, make the efficient height, and can be by the low cost manufacturing.
(modified example)
The invention is not restricted to the various embodiments described above, the implementation phase, can in the scope that does not break away from its main idea, carry out various modification.
For example, the invention is not restricted to purposes, also can similarly use, obtain same action effect with above-mentioned occasion for other electric rotating machines such as generator, synchronous motors at the motor of general industry usefulness and lifting means etc.
In addition, each embodiment also can carry out appropriate combination and implement under possible situation, in this occasion, and the action effect that can obtain to make up.
In addition, in the various embodiments described above, comprise the invention in various stages,, can obtain multiple invention by suitably making up disclosed a plurality of component part.
For example, even cancel several component parts from the disclosed whole component parts of embodiment, also can solve the problem (at least 1) that in relating to the paragraph of the problem to be solved in the present invention, illustrates, in the occasion that can obtain, can will cancel the formation of this component part as invention in the effect (at least 1) of the paragraph explanation that relates to the invention effect.
As described above, stator core and stator according to electric rotating machine of the present invention, self is difficult to modification stator core, be difficult for producing the modification of oval pattern at rotor frame, the vibration that the electromagnetic force that takes place in the time of can suppressing the electric rotating machine operation causes, acquisition has fully reduced the effect of vibration and noise.
In addition, stator core and stator according to electric rotating machine of the present invention utilize the space between stator core and the rotor frame, can improve the cooling performance of ventilation etc.
Like this, can further realize miniaturization and lightweight.
In addition, because the temperature of the rotor frame of electric rotating machine also can reduce, so, can be safer and can improve to environment, but life-saving also.
In addition, installation is set with seat,, also can makes and install the eigentone off resonance of system by changing this setting height(from bottom) in stator core.
In addition, according to electric rotating machine of the present invention, even also can realize the miniaturization and the high rigidity of electric rotating machine for big capacity, the production system also can realize by small-scale manufacturing and testing equipment, so, make the efficient height, and can be by the low cost manufacturing.
Other advantage and modification are conspicuous to those skilled in the art.Therefore, the present invention is not limited to the detail that illustrates and illustrate and typical embodiment here aspect more widely.Under the prerequisite of thought that does not break away from total inventive concept or scope, can carry out multiple modification.
Claims (4)
1. the stator core of an electric rotating machine, it is characterized in that: the external diameter of said stator body unshakable in one's determination is shaped as polygonal, its angle number is the odd number more than or equal to 3, and the rib that is used for this stator core body is supported to the supporting usefulness in supporting place is installed on the limit that respectively becomes the plane
The rib and the stator core body of above-mentioned supporting usefulness is integrated,
Make said stator body skew unshakable in one's determination ground lamination.
2. the stator core of electric rotating machine as claimed in claim 1 is characterized in that: rib and setting height(from bottom) rotor frame (17) that makes the supporting usefulness that is installed on the said stator iron core for from said stator center unshakable in one's determination to the distance of external diameter with 4/3 times of the center countershaft radius of distance at the bottom of the teeth groove of said stator iron core.
3. the stator core of an electric rotating machine, it is characterized in that: the external diameter of said stator body unshakable in one's determination is shaped as polygonal, its angle number is the even number more than or equal to 4, and the rib that is used for this stator core body is supported to the supporting usefulness in supporting place is installed on the limit that respectively becomes the plane
The rib and the stator core body of above-mentioned supporting usefulness is integrated,
Make said stator body skew unshakable in one's determination ground lamination.
4. the stator core of electric rotating machine as claimed in claim 3 is characterized in that: rib and setting height(from bottom) rotor frame (17) that makes the supporting usefulness that is installed on the said stator iron core for from said stator center unshakable in one's determination to the distance of external diameter with 4/3 times of the center countershaft radius of distance at the bottom of the teeth groove of said stator iron core.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP280708/2001 | 2001-09-14 | ||
| JP2001280708A JP2003088008A (en) | 2001-09-14 | 2001-09-14 | Stator core of rotating electric machine, stator, and rotating electric machine using them |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510004709XA Division CN1326309C (en) | 2001-09-14 | 2002-09-13 | Stator iron core of rotating electric machine and rotating electric machine using same |
| CNB2006101446000A Division CN100514792C (en) | 2001-09-14 | 2002-09-13 | Stator of rotating electric machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1405946A CN1405946A (en) | 2003-03-26 |
| CN1322654C true CN1322654C (en) | 2007-06-20 |
Family
ID=19104654
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021431531A Expired - Lifetime CN1322654C (en) | 2001-09-14 | 2002-09-13 | Stator iron core of rotating electric machine and stator thereof, and rotating electric machine using same |
| CNB200510004709XA Expired - Lifetime CN1326309C (en) | 2001-09-14 | 2002-09-13 | Stator iron core of rotating electric machine and rotating electric machine using same |
| CNB2006101446000A Expired - Lifetime CN100514792C (en) | 2001-09-14 | 2002-09-13 | Stator of rotating electric machine |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510004709XA Expired - Lifetime CN1326309C (en) | 2001-09-14 | 2002-09-13 | Stator iron core of rotating electric machine and rotating electric machine using same |
| CNB2006101446000A Expired - Lifetime CN100514792C (en) | 2001-09-14 | 2002-09-13 | Stator of rotating electric machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2003088008A (en) |
| CN (3) | CN1322654C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5651371B2 (en) | 2010-04-30 | 2015-01-14 | 株式会社東芝 | Rotating electric machine |
| CN104638814B (en) | 2013-11-13 | 2018-04-17 | Abb技术有限公司 | A kind of rotating device |
| JP6766026B2 (en) * | 2017-11-21 | 2020-10-07 | 三菱重工業株式会社 | Electric compressor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5644361A (en) * | 1979-09-17 | 1981-04-23 | Hitachi Ltd | Rotary electric machine |
| JPH05137304A (en) * | 1991-11-14 | 1993-06-01 | Fanuc Ltd | Synchronous motor capable of reducing cogging torque |
| JPH11252841A (en) * | 1998-03-05 | 1999-09-17 | Shibaura Mechatronics Corp | Single-phase induction motor |
| JP2001045683A (en) * | 1999-07-29 | 2001-02-16 | Fujitsu General Ltd | Motor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4284920A (en) * | 1979-08-10 | 1981-08-18 | General Electric Co. | Dynamoelectric machine stator assembly |
| US5783892A (en) * | 1995-06-26 | 1998-07-21 | Kabushiki Kaisha Toshiba | Stator for dynamoelectric machines |
| JP2001103691A (en) * | 1999-09-30 | 2001-04-13 | Densei Lambda Kk | Stator core and motor |
-
2001
- 2001-09-14 JP JP2001280708A patent/JP2003088008A/en active Pending
-
2002
- 2002-09-13 CN CNB021431531A patent/CN1322654C/en not_active Expired - Lifetime
- 2002-09-13 CN CNB200510004709XA patent/CN1326309C/en not_active Expired - Lifetime
- 2002-09-13 CN CNB2006101446000A patent/CN100514792C/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5644361A (en) * | 1979-09-17 | 1981-04-23 | Hitachi Ltd | Rotary electric machine |
| JPH05137304A (en) * | 1991-11-14 | 1993-06-01 | Fanuc Ltd | Synchronous motor capable of reducing cogging torque |
| JPH11252841A (en) * | 1998-03-05 | 1999-09-17 | Shibaura Mechatronics Corp | Single-phase induction motor |
| JP2001045683A (en) * | 1999-07-29 | 2001-02-16 | Fujitsu General Ltd | Motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1967969A (en) | 2007-05-23 |
| CN100514792C (en) | 2009-07-15 |
| CN1326309C (en) | 2007-07-11 |
| JP2003088008A (en) | 2003-03-20 |
| CN1405946A (en) | 2003-03-26 |
| CN1652431A (en) | 2005-08-10 |
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