CN202004549U - Stator core for AC motor - Google Patents
Stator core for AC motor Download PDFInfo
- Publication number
- CN202004549U CN202004549U CN2011201415028U CN201120141502U CN202004549U CN 202004549 U CN202004549 U CN 202004549U CN 2011201415028 U CN2011201415028 U CN 2011201415028U CN 201120141502 U CN201120141502 U CN 201120141502U CN 202004549 U CN202004549 U CN 202004549U
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- stator
- stator core
- motor
- alternating current
- punching
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model discloses a stator core for an AC motor. A stator core body comprises a plurality of stator laminations. A plurality of wiring grooves are formed along the inner edges of the stator laminations. Mounting parts for assembling the motor are arranged on the upper and lower end faces of the stator core body. The stator lamination consists of an original surface area and an increased surface area used for increasing the cross section of a magnetic path. The stator core body is divided into a plurality of layers of which each is provided with a plurality of stator laminations concentrically overlapped together without any staggering angle. Any two adjacent layers are staggered with each other by an angle of 45 degrees, and are overlapped concentrically together. The wiring grooves of each stator lamination correspond to the wiring grooves of own adjacent stator laminations. After being assembled on the motor, the stator core can fully utilize waste materials, remarkably improve the magnetic flux density distribution uniformity, remarkably reduce the manufacturing cost of the motor, and remarkably improve the cost performance of the AC motor on the bases of meeting each comprehensive performance index of the AC motor and keeping the number of the stator laminations invariable.
Description
Technical field
The utility model relates to the stator on a kind of alternating current machine, the stator core on particularly a kind of small-power inorganic shell class alternating current machine.That described alternating current machine comprises is single-phase, the generator of the interchange of three-phase, also comprises alternating current motor single-phase, three-phase.
Background technology
The stator of existing alternating current machine generally is to be made of stator core and enamelled wire winding, wherein stator core is to be made of stator punching with one heart a plurality of and that do not overlap with having mutual alternate angle each other, wherein, a kind of such stator core is arranged, the outline of its each stator punching is made up of four straightways and four arc sections, between the two adjacent arbitrarily straightway limits is to be formed by connecting by an arc section, make the outline of whole stator punching be square circular or rectangular circle, along a plurality of wire casings are set on the inward flange of stator punching.For example, the small-power all-purpose gasoline generator (being called for short logical machine) that occurs 1KW-5KW in the market in a large number, total 2KW and two kinds of series of 5KW, the stator core of these motors is except that the characteristics with said structure, also have following characteristics, stator core except that the two ends sub-fraction with end cap is connected, all the other most outer surfaces are all exposed outside, therefore, the inorganic shell class alternating current machine that is otherwise known as.The stator punching that outline is square circular or rectangular circle exists the uneven deficiency of magnetic flux distribution of yoke portion, the stator punching that is square circular with outline is an example, the stator core made from it as shown in Figure 1, because the yoke portion width difference on the whole stator core, as shown in Figure 2, yoke portion width maximum, magnetic circuit cross section maximum, magnetic flux density is less relatively; As shown in Figure 3, yoke portion width minimum, magnetic circuit cross section minimum, magnetic flux density is relatively large; In conjunction with Fig. 2,3 as can be known, each position of magnetic circuit cross section of stator core is different, thereby make that the magnetic flux distribution of stator core is inhomogeneous, the iron core position that magnetic flux density is big, magnetic resistance is increased, and iron loss increases, easily heating, thereby reduce the power output of motor, had a strong impact on the useful life of motor.
Generally speaking, the enamelled wire in the logical machine all adopts the copper enamelled wire.At present the price of copper rises to about 70 yuan of per kilograms suddenly by on about 30 yuan of the original per kilograms, even reaches more than 80 yuan of per kilogram.Rise significantly and long-time remaining high along with the copper valency, directly cause increasing substantially of motor production cost, copper valency proportion in whole motor production cost reaches more than 50%, the unfavorable factor that motor enterprise is necessary for digest alone copper and other raw material to appreciate and brought, the immense pressure that sharp rises and brought from cost of having to bear more, for this reason, the less motor enterprise of some scales has implemented half stopping production even the strategy that stops production because of bearing huge cost pressure.
In order to address the above problem, relevant technologies personnel use enamel covered wire instead enamel insulated aluminium wire and substitute, and are intended to effectively reduce motor cost, for example, disclose the utility model patent that name is called " aluminium enamel-covered wire single-phase asynchronous motor " in CN201111323Y.Though this patent can effectively reduce cost, exist the deficiency that power output obviously descends, electric machine temperature rise is too high and useful life is short, be example with the logical machine of 2KW, when adopting enamel covered wire, power output is 2KW, be more than 1,000 hours useful life; After adopting enamel insulated aluminium wire, power output only is 1.8KW, and useful life, less than was 250 hours.Cause these not enough reasons to be, under same size, replace enamel covered wire merely with enamel insulated aluminium wire, the internal resistance of winding is obviously increased, the temperature rise of coil windings is too high, this not only obviously descends power output because of reducing energy conversion efficiency, but also has significantly shortened the useful life of motor because of easy burn-out motor.
In order to solve the problem that above-mentioned winding internal resistance increases, the way that the technical staff can expect usually is following two kinds:
1, the one, under the prerequisite identical, shorten the length of enamel insulated aluminium wire with the enamel covered wire diameter, promptly reduce the number of turn of winding.Because the problem that power output reduces certainly will appear in the minimizing of umber of turn, therefore, this method is impracticable.
2, the 2nd, under the prerequisite identical, increase the diameter of enamel insulated aluminium wire with enamel covered wire length.So, just must increase the cross-sectional area of wire casing on the stator punching, if under the situation of stator punching size constancy, certainly will cause the yoke portion width of stator punching to reduce, magnetic flux density increases, to cause that the motor feels hot fast, temperature rise is too high, power output obviously descends, energy conversion efficiency is low and useful life short, and the motor integrated performance index is had a greatly reduced quality.If guarantee again that for copper yoke portion cross section is constant with aluminium, then to increase the stator punching external diameter, this causes the silicon steel sheet consumption obviously to strengthen again, and can't guarantee that installation dimension is constant, both increased manufacturing cost, lose the inheritance of product assembling again, this is that motor manufacturing enterprise and user are unwilling to accept.
The utility model patent that name is called " a kind of electric machine with aluminium winding " is disclosed in CN201113577Y, this patent is obviously to increase the technical problem of manufacturing cost at above-mentioned because of increasing the stator punching size, compared with prior art, keeping under the constant prerequisite of stator punching outside dimension, dwindle the internal diameter of stator punching, thereby can keep the yoke portion width of stator punching constant, can increase the wire casing cross-sectional area again, satisfy with the simple purpose that substitutes than the enamel covered wire of minor diameter of larger-diameter enamel insulated aluminium wire, attempt to guarantee the heating of motor, power, energy conversion efficiency and useful life etc., integrated performance index reached specification requirement.Though this patent control stator punching uses consumption constant, and has reduced manufacturing cost effectively, brought following serious technological deficiency: well-known, the yoke portion width of stator core must be complementary with the yoke portion width of rotor core.Owing to dwindled the internal diameter of stator punching, therefore, must reduce the size of rotor core, cause the yoke portion width of stator core not to be complementary with the yoke portion width of rotor core, under the same conditions, the magnetic flux density of rotor core obviously increases, and causes the rotor core heating fast, the motor power output decreases, if it is constant to want to keep original power output, just must cause the electric machine temperature rise height, efficient is low, and easy scaling loss has shortened useful life of motor significantly.
The utility model content
The purpose of this utility model is carried out the improved stator core that is used on the alternating current machine with regard to providing a kind of stator punching that is square circular or rectangular circle at outline, after being assembled into alternating current machine with it, can satisfy the every integrated performance index of alternating current machine and keep on the stator silicon steel sheet consumption basis of invariable, make full use of waste material, the magnetic flux distribution uniformity of stator core is significantly improved, and can significantly reduce the motor manufacturing cost, obviously improve the cost performance of alternating current machine.
The purpose of this utility model is to realize by such technical scheme, it includes the stator core body, the stator core body includes a plurality of stator punchings, along a plurality of wire casings are set on the inward flange of stator punching, the installed part of being convenient to assemble motor is set all on the upper/lower terminal face of stator core main body; Described stator punching is made of the face zone that increases that former zone and being used to increases the magnetic circuit cross section; The stator core body is divided into multilayer, every layer has the stator punching of a plurality of angles that do not stagger to overlap with one heart, arbitrarily the adjacent two layers miter angle that staggers mutually overlaps concentrically with respect to one another, and the wire casing of each stator punching is all corresponding with the wire casing of adjacent stators punching.
In the utility model, the area of the stator punching under the area that described former zone is meant the stator punching that this is regional and wire casing layout and the existing same specification is identical with the wire casing layout.Described increase the face zone be meant with existing same specification under the area of stator punching compare the surface area that is increased.
The utility model is to improve at the stator punching that outline is square circular or rectangular circle, by increase stator punching increase the face zone in, adopt the arrangement form of the multilayer and the miter angle that staggers mutually, constitute stator core described in the utility model.Compared with prior art, the utility model has not only obviously increased near the magnetic circuit cross section the minimum place of magnetic circuit cross section of original stator core yoke portion, and by increasing the setting in face zone, also remedy because of alternate angle and arrange the deficiency that the cross section of the magnetic circuit cross section maximum make original stator core yoke portion reduces, cause the magnetic flux distribution uniformity of whole stator core to be significantly improved, obviously reduce magnetic resistance, avoid influencing power output because of temperature rise is too high, energy conversion efficiency and useful life etc. the motor performance index, the full guarantee that remains unchanged substantially and provide for the integrated performance index of motor.Can adopt the waste material that was sheared originally fully owing to increase the employed material in face zone, therefore, the material usage of stator punching just can be constant at all, thereby guarantee to produce the constant of stator core cost.
In the utility model, the effect of installed part mainly is to adapt to the actual needs that present motor uses the user, actual conditions according to existing motor assembly structure, under the prerequisite that the installing component physical dimension is not changed, motor is installed easily, have good inheritance, application prospect is very extensive.
The utility model is not only applicable to adopt the motor of enamel covered wire, but also is applicable to the motor that adopts enamel insulated aluminium wire, and described motor can be the generator of the interchange of single-phase, three-phase, also can be alternating current motor single-phase, three-phase.In order further significantly to reduce the production cost of motor, motor manufacturing enterprise can adopt enamel insulated aluminium wire, compare with enamel covered wire,, can increase the diameter of enamel insulated aluminium wire for the internal resistance that makes winding keeps constant substantially, simultaneously, the cross section of corresponding increase stator core wire casing owing to the utility model version, has obviously increased the cross section of stator core magnetic circuit, therefore, leave the wire casing cross section increased space that makes on the stator punching fully.For now, the price of enamel covered wire is 78 yuan/kilogram, the price of enamel insulated aluminium wire is 30 yuan/kilogram, in copper cash motor and the electric machine with aluminium winding, the ratio of the weight of copper, aluminium consumption is 1:0.5, therefore, after the per kilogram enamel covered wire substituted with 0.5 kilogram of enamel insulated aluminium wire, the economic benefit that is produced was: 78 * 1-30 * 0.5=63 unit.As seen, the utility model reduces the motor manufacturing cost significantly under the prerequisite that can satisfy the motor integrated performance index, obviously improve the cost performance of alternating current machine.Because the utility model has been set up in stator punching and has been increased the face zone, for providing enough spaces with aluminium for copper, also is for opening up a new road for the copper production motor in configuration aspects with aluminium.
Owing to adopted technique scheme, after this practicality newly is assembled into motor, can satisfy the every integrated performance index of alternating current machine and keep on the stator punching consumption basis of invariable, make full use of waste material, the magnetic flux distribution uniformity of stator core is significantly improved, significantly reduce the motor manufacturing cost, obviously improve the cost performance of alternating current machine.
Description of drawings
Description of drawings of the present utility model is as follows.
Fig. 1 be existing square circular stator punching constitute stator core structural representation.
Fig. 2 is an A-A cutaway view among Fig. 1.
Fig. 3 is a B-B cutaway view among Fig. 1.
Fig. 4 is the structural representation of first kind of embodiment of the utility model.
Fig. 5 is a C-C cutaway view among Fig. 4.
Fig. 6 is a D-D cutaway view among Fig. 4.
Fig. 7 is the structural representation of a stator punching among Fig. 4.
Fig. 8 is the stereogram of Fig. 4.
Fig. 9 is the structural representation of second kind of embodiment of the utility model.
Figure 10 is the structural representation of the third embodiment of the utility model.
Figure 11 is the procedure chart that the rectangle silicon steel sheet is made existing stator punching.
Figure 12 is the procedure chart that the rectangle silicon steel sheet is made a kind of stator punching of the present utility model.
Among the figure: ⒈ stator core body; The ⒉ stator punching; The ⒊ wire casing; The ⒋ installed part; Former zone of ⒌; ⒍ increases the face zone; ⒎ sheet spare; The ⒏ through hole; ⒐ assembles wire casing; ⒑ assembles through hole; ⒒ monomer spare.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Shown in Fig. 4,9,10, the utility model includes stator core body 1, stator core body 1 includes a plurality of stator punchings 2, along a plurality of wire casings 3 are set on the inward flange of stator punching 2, the installed part 4 of being convenient to assemble motor is set all on the upper/lower terminal face of stator core main body 1; As shown in Figure 5, described stator punching 2 by former zone 5 and the face zone 6 that increases that is used to increase the magnetic circuit cross section constitute; Stator core body 1 is divided into multilayer, every layer has the stator punching 2 of a plurality of angles that do not stagger to overlap with one heart, arbitrarily the adjacent two layers miter angle that staggers mutually overlaps concentrically with respect to one another, and the wire casing 3 of each stator punching 2 is all corresponding with the wire casing 3 of adjacent stators punching 2.
As shown in Figure 7, in the utility model, the area of the stator punching under the area that described former zone 5 is meant the stator punching that this is regional and wire casing layout and the existing same specification is identical with the wire casing layout.Among Fig. 7, the middle section of the stator core that dotted line and straight line surrounded is exactly former zone 5.Described increase face zone 6 be meant with existing same specification under the area of stator punching compare the surface area that is increased.Among Fig. 7, the zone at the place, four angles that dotted line and straight line surrounded is exactly to increase face zone 6.
The utility model is to improve at the stator punching 2 that outline is square circular or rectangular circle, by increase stator punching 2 increase face zone 6 in, adopt the arrangement form of the multilayer and the miter angle that staggers mutually, constitute stator core described in the utility model.As Fig. 1,2, shown in 3, compared with prior art, the utility model has not only obviously increased near the magnetic circuit cross section the minimum place of magnetic circuit cross section of original stator core yoke portion, and by increasing the setting in face zone, also remedy because of alternate angle and arrange the deficiency that the cross section of the magnetic circuit cross section maximum make original stator core yoke portion reduces, as Fig. 4,5,6, shown in 7, cause the magnetic flux distribution uniformity of whole stator core to be significantly improved, obviously reduce magnetic resistance, avoid influencing power output because of temperature rise is too high, energy conversion efficiency and useful life etc. the motor performance index, the full guarantee that remains unchanged substantially and provide for the integrated performance index of motor.As shown in figure 11, the figure a among the figure is the rectangle silicon steel sheet, and figure b is the shape with the rammed existing stator punching of shape shown in the figure a.As shown in figure 12, figure a is the rectangle silicon steel sheet of the figure a same size among Figure 11, and figure b is the shape with the shape cost of stamping utility model stator punching 2 shown in the figure a.In conjunction with Figure 11,12 as can be known, can adopt the waste material that was sheared originally fully owing to increase the employed material in face zone, therefore, the material usage of stator punching 2 just can be constant at all, thereby guarantee to produce the constant of the used silicon steel material cost of stator core.
The utility model is not only applicable to adopt the motor of enamel covered wire, but also is applicable to the motor that adopts enamel insulated aluminium wire, and described motor can be the generator of the interchange of single-phase, three-phase, also can be alternating current motor single-phase, three-phase.In order further significantly to reduce the production cost of motor, motor manufacturing enterprise can adopt enamel insulated aluminium wire, compare with enamel covered wire,, can increase the diameter of enamel insulated aluminium wire for the internal resistance that makes winding keeps constant substantially, simultaneously, the cross section of corresponding increase stator core wire casing 3 owing to the utility model version, has obviously increased the cross section of stator core magnetic circuit, therefore, leave the wire casing 3 cross section increased space that make on the stator punching 2 fully.For now, the price of enamel covered wire is 78 yuan/kilogram, the price of enamel insulated aluminium wire is 30 yuan/kilogram, in copper cash motor and the electric machine with aluminium winding, the ratio of the weight of copper, aluminium consumption is 1:0.5, therefore, after the per kilogram enamel covered wire substituted with 0.5 kilogram of enamel insulated aluminium wire, the economic benefit that is produced was: 78 * 1-30 * 0.5=63 unit.As seen, the utility model reduces the motor manufacturing cost significantly under the prerequisite that can satisfy the motor integrated performance index, obviously improve the cost performance of alternating current machine.Because the utility model has been set up in stator punching and has been increased the face zone, for providing enough spaces with aluminium for copper, also is for opening up a new road for the copper production motor in configuration aspects with aluminium.
In utility model, the angle that the adjacent two layers stator punching staggers mutually is 45 degree, certainly, the angle that the adjacent two layers stator punching staggers mutually also can be other acute angle, promptly spend less than 90 greater than zero degree, this angle can be 45 degree, 55 degree or 30 degree, also can be other any one angle that belongs to acute angle, and only 45 degree are best angle.
Embodiment 1:
Shown in Fig. 4,5,6,7,8, stator core body 1 can be divided into three layers.Wherein, the number of stator punching is determined according to actual conditions in every layer, and for example, the number of the stator punching 2 of ground floor, the second layer and the 3rd layer can be respectively 64,140,64.
Embodiment 2:
As shown in Figure 9, stator core body 1 also can be divided into two layers.Wherein, the number of each layer stator punching 2 can be 134.
Embodiment 3:
As shown in figure 10, stator core body 1 can also be divided into four layers, and the number of each layer stator punching 2 can be 67.
The effect of installed part 4 mainly is to adapt to the actual needs that present motor uses the user, according to the actual conditions of existing motor assembly structure, under the prerequisite that the installing component physical dimension is not changed, motor is installed easily, have good inheritance, application prospect is very extensive.
Shown in Fig. 8,9, installed part 4 forms by a plurality of parts 7 are overlapping with one heart, and each sheet spare 7 is provided with and the corresponding through hole 8 of stator punching 2 internal diameter sizes, is provided with the wire casing 3 corresponding assembling wire casings 9 with stator punching 2 along the edge of through hole 8.Sheet spare 7 can be to be made by magnetic material, also can be made by nonmagnetic substance.
As shown in figure 10, installed part 4 is made of the monomer spare 11 of a band assembling through hole 10, assembling through hole 10 is corresponding with the endoporus and the wire casing 3 of stator punching 2, and the area of assembling through hole 10 is greater than or equal to the endoporus of stator punching 2 and the summation of all wire casing 3 area occupied.Monomer spare 11 can be made by nonmagnetic substance.
No matter installed part 4 is to make by magnetic material or by nonmagnetic substance, and its outline physical dimension must be identical with original installation dimension or be complementary, and makes it have good inheritance.
In the utility model, it is the form shown in the figure that wire casing 3 layouts of stator punching have more than, and it can be any distribution form in the wire casing layout of all prior aries.The producer can carry out any layout designs according to actual needs.
Claims (10)
1. stator core that is used on the alternating current machine, include stator core body (1), stator core body (1) includes a plurality of stator punchings (2), along a plurality of wire casings (3) are set on the inward flange of stator punching (2), it is characterized in that all being provided with on the upper/lower terminal face of stator core main body (1) installed part (4) of being convenient to assemble motor; Described stator punching (2) by former zone (5) and the face zone (6) that increases that is used to increase the magnetic circuit cross section constitute; Stator core body (1) is divided into multilayer, every layer has the stator punching (2) of a plurality of angles that do not stagger to overlap with one heart, the any adjacent two layers miter angle that staggers mutually, overlap concentrically with respect to one another, the wire casing (3) of each stator punching (2) is all corresponding with the wire casing (3) of adjacent stators punching (2).
2. the stator core that is used on the alternating current machine as claimed in claim 1 is characterized in that: stator core body (1) is divided into three layers.
3. the stator core that is used on the alternating current machine as claimed in claim 2 is characterized in that: the number of the stator punching (2) of ground floor, the second layer and the 3rd layer is respectively 64,140,64.
4. the stator core that is used on the alternating current machine as claimed in claim 1 is characterized in that: stator core body (1) is divided into two layers.
5. the stator core that is used on the alternating current machine as claimed in claim 4 is characterized in that: the number of each layer stator punching (2) is 134.
6. the stator core that is used on the alternating current machine as claimed in claim 1 is characterized in that: stator core body (1) is divided into four layers, and the number of each layer stator punching (2) is 67.
7. as claim 1,2,3,4, the 5 or 6 described stator cores that are used on the alternating current machine, it is characterized in that: installed part (4) forms by a plurality of parts (7) are overlapping with one heart, each sheet spare (7) is provided with and the corresponding through hole of stator punching (2) internal diameter size (8), is provided with the corresponding assembling wire casing of wire casing (3) (9) with stator punching (2) along the edge of through hole (8).
8. the stator core that is used on the alternating current machine as claimed in claim 7 is characterized in that: sheet spare (7) is made by magnetic material or nonmagnetic substance.
9. as claim 1,2,3,4, the 5 or 6 described stator cores that are used on the alternating current machine, it is characterized in that: installed part (4) is made of the monomer spare (11) of a band assembling through hole (10), assembling through hole (10) is corresponding with the endoporus and the wire casing (3) of stator punching (2), and the area of assembling through hole (10) is greater than or equal to the endoporus of stator punching (2) and the summation of all wire casings (3) area occupied.
10. the stator core that is used on the alternating current machine as claimed in claim 9 is characterized in that: monomer spare (11) is made by nonmagnetic substance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201415028U CN202004549U (en) | 2011-05-06 | 2011-05-06 | Stator core for AC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201415028U CN202004549U (en) | 2011-05-06 | 2011-05-06 | Stator core for AC motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202004549U true CN202004549U (en) | 2011-10-05 |
Family
ID=44707275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201415028U Expired - Fee Related CN202004549U (en) | 2011-05-06 | 2011-05-06 | Stator core for AC motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202004549U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017205847A1 (en) * | 2017-04-06 | 2018-10-11 | Bühler Motor GmbH | Electronically commutated DC motor and method for assembling an electronically commutated DC motor |
-
2011
- 2011-05-06 CN CN2011201415028U patent/CN202004549U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017205847A1 (en) * | 2017-04-06 | 2018-10-11 | Bühler Motor GmbH | Electronically commutated DC motor and method for assembling an electronically commutated DC motor |
| CN108696085A (en) * | 2017-04-06 | 2018-10-23 | 标立电机有限公司 | The assembly method of Electronically Commutated Direct Current machine and Electronically Commutated Direct Current machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20170506 |