CN210092980U - Stator punching sheet with large and small slots, wherein the number of slots of each pole and each phase is 9 - Google Patents
Stator punching sheet with large and small slots, wherein the number of slots of each pole and each phase is 9 Download PDFInfo
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- CN210092980U CN210092980U CN201921057947.0U CN201921057947U CN210092980U CN 210092980 U CN210092980 U CN 210092980U CN 201921057947 U CN201921057947 U CN 201921057947U CN 210092980 U CN210092980 U CN 210092980U
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Abstract
A stator punching sheet with 9 slots in each phase of each pole belongs to the technical field of three-phase asynchronous motors and solves the technical problems of reducing stray loss of the three-phase asynchronous motors, reducing temperature rise and noise of the motors and improving motor efficiency. The solution is as follows: at least six groups of stator slot groups for placing copper wires are radially and uniformly arranged on the annular surface of the substrate along the circumferential direction of the substrate according to the motor stage number, the number of slots of each pole and each phase in each group of stator slot groups is 9, each stator slot group comprises a large stator slot, a middle stator slot and a small stator slot, the area of the small stator slot is 80-95% of that of the large stator slot, and the area of the middle stator slot is between that of the large stator slot and that of the small stator slot. The utility model discloses a big stator slot in the design stator slot group, well stator slot and little stator slot's flute profile distribute, can make the groove utilization ratio improve greatly, improve the stator towards the distribution mechanism of piece yoke portion magnetism density.
Description
Technical Field
The utility model belongs to the technical field of the three-phase asynchronous motor, concretely relates to every utmost point is big or small groove stator towards piece that every looks slot number is 9.
Background
The three-phase asynchronous motor includes five losses, namely stator copper loss, rotor copper loss, iron core loss, mechanical loss and stray loss. In order to enable the motor efficiency to reach different levels of high efficiency, super high efficiency and the like, the technical personnel in the field analyze and judge various losses and take corresponding measures to reduce the losses.
The stator coil adopts the low harmonic winding form of unequal turns, not only can make the actual resistance of winding reduce, reaches the purpose that reduces stator copper loss, carries out analysis, judgement and selection to the harmonic of different turns moreover to the stray loss that effectual reduction motor produced because the harmonic. In the face of different numbers of turns of each coil, the same groove shape of the stator punching sheet can cause different groove filling rates. Therefore, the design of the large and small groove punching sheets is carried out at the same time. On one hand, in order to optimize the wire inserting manufacturability, the full rate of each groove is basically consistent, and the wire inserting quality is effectively improved; on the other hand, the sizes of the same stamped sheet and the slots corresponding to different yokes are further refined through precise design and test requirements for reducing motor stray loss and motor temperature rise, reducing noise and the like.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a technical level of current stator punching slice groove shape design is developed and is improved, effectual reduction three-phase asynchronous motor's stray loss, reduces the temperature rise and the noise of motor, improves motor efficiency. The utility model provides a every looks slot number of every level is big or small groove stator towards piece of 9.
The utility model discloses a following technical scheme realizes.
A big and small slot stator punching sheet with 9 slots per phase of each pole comprises a circular ring-shaped substrate, wherein: at least six groups of stator slot groups for placing copper wires are radially and uniformly arranged on the annular surface of the substrate along the circumferential direction of the substrate according to the motor stage number, the number of slots of each pole in each group of stator slot groups is 9, each stator slot group comprises a large stator slot and a small stator slot, the area of the small stator slot is 80% -95% of the area of the large stator slot, the central angles between the adjacent large stator slot and the small stator slot are equal, and the slot shape distribution of the large stator slot and the small stator slot in the stator slot group is one or two of the following slot shape distribution forms:
1) the large stator slot is arranged in the middle of the stator slot group, four small stator slots are respectively arranged on two sides of the large stator slot, and the small stator slots on two sides of the large stator slot are symmetrically arranged around the large stator slot;
2) the three large stator slots are arranged in the middle of the stator slot group, three small stator slots are respectively arranged on two sides of the three large stator slots, and the small stator slots on two sides of the three large stator slots are symmetrically arranged relative to the large stator slot in the middle;
3) the five large stator slots are arranged in the middle of the stator slot group, two small stator slots are respectively arranged on two sides of the five large stator slots, and the small stator slots on two sides of the five large stator slots are symmetrically arranged relative to the large stator slot in the middle;
4) seven large stator slots are arranged in the middle of the stator slot group, two sides of the seven large stator slots are respectively provided with a small stator slot, and the two small stator slots are symmetrically arranged relative to the large stator slot in the middle;
the large stator slot or the small stator slot comprises a rectangular slot, a first isosceles trapezoid slot, a second isosceles trapezoid slot and a semicircular slot, one end, close to the inner circular surface of the substrate, of the large stator slot or the small stator slot is provided with the rectangular slot, the width of the rectangular slot is 2.5-4.2 mm, and the height of the rectangular slot is 0.9-2.0 mm; the second isosceles trapezoid groove is arranged at one end, far away from the circle center, of the first isosceles trapezoid groove, the upper bottom edge of the first isosceles trapezoid groove is collinear with the long edge of the rectangular groove, the lower bottom edge of the first isosceles trapezoid groove is collinear with the upper bottom edge of the second isosceles trapezoid groove, the width of the lower bottom edge of the first isosceles trapezoid groove is 5-10 mm, the included angle between the bevel edge and the lower bottom edge of the first isosceles trapezoid groove is 20-30 degrees, the width of the lower bottom edge of the second isosceles trapezoid groove is 8-15 mm, and the height of the second isosceles trapezoid groove is 12-40 mm; the semicircular groove is formed in the position of the lower bottom edge of the second isosceles trapezoid groove, and the diameter of the semicircular groove is equal to the width of the lower bottom edge of the second isosceles trapezoid groove.
Furthermore, the stator slot group is also provided with a middle stator slot, the area of the middle stator slot is between the area of the small stator slot and the area of the large stator slot, and the central angles between the adjacent large stator slot, the small stator slot and the middle stator slot are all equal; the groove shape distribution of the large stator groove, the small stator groove and the middle stator groove in the stator groove group is one or two of the following groove shape distribution forms:
1) the two middle stator slots are respectively and symmetrically arranged between the large stator slot and the small stator slots on the two sides;
2) the three large stator slots are arranged in the middle of the stator slot group, two small stator slots are respectively arranged on two sides of the stator slot group, the small stator slots on the two sides are symmetrically arranged relative to the large stator slot in the middle, and the two middle stator slots are respectively arranged between the large stator slot and the small stator slots on the two sides;
3) the five large stator slots are arranged in the middle of the stator slot group, two sides of the stator slot group are respectively provided with one small stator slot, the two small stator slots are symmetrically arranged relative to the large stator slot at the middle position, and the two middle stator slots are respectively arranged between the large stator slot and the small stator slots at the two sides;
4) the large stator slot is arranged in the middle of the stator slot group, two small stator slots are respectively arranged on two sides of the stator slot group, and the two small stator slots are symmetrically arranged around the large stator slot; the two middle stator slots are respectively arranged between the large stator slot and the small stator slots at two sides, and the two middle stator slots are symmetrically arranged around the large stator slot;
5) the three large stator slots are arranged in the middle of the stator slot group, two sides of the stator slot group are respectively provided with a small stator slot, and the two small stator slots are symmetrically arranged relative to the large stator slot in the middle; the two middle stator slots are respectively arranged between the three large stator slots and the small stator slots at two sides, and the two middle stator slots are symmetrically arranged relative to the large stator slot at the middle position;
6) the large stator slot is arranged in the middle of the stator slot group, two sides of the stator slot group are respectively provided with a small stator slot, and the two small stator slots are symmetrically arranged around the large stator slot; the three middle stator slots are respectively arranged between the large stator slot and the small stator slots at two sides, and the large stator slots of the three middle stator slots are symmetrically arranged.
Furthermore, 8-16 buckle piece grooves used for installing buckle pieces are uniformly arranged on the outer circular surface of the substrate along the circumferential direction of the substrate, the lower bottom edge of each buckle piece groove is a straight line, the upper bottom edge of each buckle piece groove is naturally opened along the circumferential direction of the substrate, a piece arranging groove is arranged at the bottom of any buckle piece groove, and the piece arranging groove is rectangular or trapezoidal.
Further, the width of cramp groove is 14 ~ 25mm, and highly is 3 ~ 5mm, and the contained angle between cramp groove hypotenuse and the base is 15 ~ 25.
Further, 27 x n stator slots are uniformly distributed in the large stator slot and the small stator slot in the stator slot group on the inner circular ring surface of the substrate in a radial mode along the circumferential direction of the substrate, wherein n is the number of poles of the motor.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a pair of every utmost point every looks slot number is 9 big or small groove stator towards piece, and the rule manufacturability and the rule quality promotion to the coil of not waiting for turns are great, to the efficiency that promotes the motor, improve start, reduce motor noise meaning great. The slot utilization rate can be greatly improved, and the distribution mechanism of the magnetic density of the yoke part of the stator punching sheet is improved. The stray loss of the motor is reduced, the starting performance of the motor is improved, the temperature rise of the motor is reduced, the efficiency of the motor is improved, and the overall cost of the motor is saved.
Drawings
Fig. 1 is a schematic view of the overall structure of a large stator slot and a small stator slot in the first embodiment.
Fig. 2 is a partially enlarged structural view of a buckle sheet groove and a sheet tidying groove at the part III in fig. 1.
Fig. 3 is a schematic view of the overall structure of the large and small stator slots of the second embodiment.
Fig. 4 is a schematic view of the overall structure of the large and small stator slots of the third embodiment.
FIG. 5 is a schematic view of the overall structure of the large and small stator slots of the fourth embodiment.
Fig. 6 is a schematic diagram of a comparative groove shape structure of fig. 5 (or fig. 1, 3, or 4) after the parts I and ii are partially enlarged and the projection positions are overlapped, wherein the two-dot chain line is a groove-shaped outline of the small stator groove.
FIG. 7 is a schematic view of the overall structure of the large and small stator slots of the fifth embodiment.
FIG. 8 is a schematic view of the overall structure of the large and small stator slots according to the sixth embodiment.
FIG. 9 is a schematic view of the overall structure of the large and small stator slots of the seventh embodiment.
FIG. 10 is a schematic view of the overall structure of the large and small stator slots of the eighth embodiment.
FIG. 11 is a schematic view of the overall structure of the large and small stator slots of the ninth embodiment.
FIG. 12 is a schematic view of the overall structure of a large stator slot and a small stator slot in accordance with a tenth embodiment.
Fig. 13 is a partially enlarged and projected overlapping groove shape comparison structure diagram of the part I, the part ii and the part iv in fig. 12 (or fig. 7, or fig. 8, or fig. 9, or fig. 10, or fig. 11), in which the two-dot chain line is a small stator groove shape outline line and the dotted line is a middle stator groove shape outline line.
In the figure, 1 is a substrate, 2 is a stator slot group, 21 is a rectangular slot, 22 is a first isosceles trapezoid-shaped slot, 23 is a second isosceles trapezoid-shaped slot, 24 is a semicircular slot, 25 is a small stator slot, 26 is a large stator slot, 27 is a middle stator slot, 3 is a buckle slot, and 4 is a piece arranging slot.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example one
A big and small slot stator punching sheet with 9 slots per phase of each pole comprises a circular ring-shaped substrate 1, wherein: at least six groups of stator slot groups 2 for placing copper wires are radially and uniformly arranged on the annular surface of the substrate 1 along the circumferential direction of the substrate 1 according to the motor stage number, the number of slots of each pole in each group of stator slot groups 2 is 9, each stator slot group 2 comprises a large stator slot 26 and a small stator slot 25, the groove shape and the area of all the large stator slots 26 in one stator punching sheet are equal, the groove shape and the area of all the small stator slots 25 are equal, and the groove shape of the large stator slot 26 or the small stator slot 25 is an open slot, so that the copper wires can be placed conveniently; the area of the small stator slot 25 is 80% -95% of the area of the large stator slot 26, the central angles between the adjacent large stator slot 26 and small stator slot 25 are equal, the large stator slot 26 and small stator slot 25 in the stator slot group 2 are distributed as shown in fig. 1, fig. 2 and fig. 6, one large stator slot 26 is arranged in the middle of the stator slot group 2, the two sides of the large stator slot 26 are respectively provided with four small stator slots 25, the small stator slots 25 on the two sides of the large stator slot 26 are symmetrically arranged relative to the large stator slot 26, namely, the large stator slot 26 and small stator slot 25 of each phase of 9 slots are distributed as 'small-large-small';
the basic groove shape of the large stator groove 26 or the small stator groove 25 is a pear-shaped groove and comprises a rectangular groove 21, a first isosceles trapezoid-shaped groove 22, a second isosceles trapezoid-shaped groove 23 and a semicircular groove 24, one end, close to the inner circular surface of the substrate 1, of the rectangular groove 21 is arranged, the width of the rectangular groove 21 is 2.5-4.2 mm, and the height of the rectangular groove 21 is 0.9-2.0 mm; the second isosceles trapezoid-shaped groove 23 is arranged at one end, far away from the center of a circle, of the first isosceles trapezoid-shaped groove 22, the upper bottom edge of the first isosceles trapezoid-shaped groove 22 is collinear with the long edge of the rectangular groove 21, the lower bottom edge of the first isosceles trapezoid-shaped groove 22 is collinear with the upper bottom edge of the second isosceles trapezoid-shaped groove 23, the width of the lower bottom edge of the first isosceles trapezoid-shaped groove 22 is 5-10 mm, the included angle between the oblique edge and the lower bottom edge of the first isosceles trapezoid-shaped groove 22 is 20-30 degrees, the width of the lower bottom edge of the second isosceles trapezoid-shaped groove 23 is 8-15 mm, and the height of the second isosceles trapezoid-shaped groove 23 is 12-40; the semi-circular groove 24 is arranged at the position of the lower bottom edge of the second isosceles trapezoid-shaped groove 23, and the diameter of the semi-circular groove 24 is equal to the width of the lower bottom edge of the second isosceles trapezoid-shaped groove 23.
Furthermore, 8-16 cramp grooves 3 used for installing cramps are uniformly arranged on the outer circular surface of the substrate 1 along the circumferential direction of the substrate 1, the effect of fixing an iron core is achieved, the cramp grooves are similar to isosceles trapezoids, the lower bottom edges of the cramp grooves 3 are straight lines, the upper bottom edges of the cramp grooves 3 are naturally opened along the circumferential direction of the substrate 1, a piece arranging groove 4 is arranged at the bottom of any one of the cramp grooves 3, the piece arranging groove 4 is rectangular or trapezoidal, the piece arranging groove 4 is used for laminating the stator core, the punching directionality is guaranteed to be consistent, the width of the upper bottom edge of the piece arranging groove 4 is 3-4 mm, and the height is 1.5-4 mm.
Further, the width of the buckle piece groove 3 is 14-25 mm, the height is 3-5 mm, and the included angle between the inclined edge and the bottom edge of the buckle piece groove 3 is 15-25 degrees.
Further, the large stator slots 26 and the small stator slots 25 in the stator slot group 2 are uniformly arranged 27 × n, that is, 3 (phases) × 9 (number of slots per phase per pole) × n, where n is the number of poles of the motor, radially in the circumferential direction of the substrate 1 on the inner circular ring surface of the substrate 1.
The method comprises the steps of collecting test data of the three-phase asynchronous motor using the stator punching sheet with the large and small slots with the number of 9 slots per pole and phase, saving copper at 0.1-0.25 Kg/KW, and enabling motor efficiency to meet and be slightly higher than standard IE2 and IE3 efficiency values.
Example two
The shape and size of the large stator slot 26 and the small stator slot 25 in the stator slot group 2 are the same as those of the first embodiment, the large stator slot 26 and the small stator slot 25 are distributed in the shape of slots as shown in fig. 3 and fig. 6, three large stator slots 26 are arranged in the middle of the stator slot group 2, three small stator slots 25 are respectively arranged on two sides of the three large stator slots 26, and the small stator slots 25 on two sides of the three large stator slots 26 are symmetrically arranged with respect to the large stator slot 26 in the middle, i.e. the large stator slot 26 and the small stator slot 25 of each phase of 9 slots per pole are distributed in a shape of "small-large-small".
The method comprises the steps of collecting test data of the three-phase asynchronous motor using the stator punching sheet with the large and small slots with the number of 9 slots per pole and phase, saving copper at 0.1-0.25 Kg/KW, and enabling motor efficiency to meet and be slightly higher than standard IE2 and IE3 efficiency values.
EXAMPLE III
The shape and size of the large stator slots 26 and the small stator slots 25 in the stator slot group 2 are the same as those of the first embodiment, the large stator slots 26 and the small stator slots 25 are distributed in the shape of slots as shown in fig. 4 and 6, five large stator slots 26 are arranged in the middle of the stator slot group 2, two small stator slots 25 are respectively arranged on two sides of the five large stator slots 26, and the small stator slots 25 on two sides of the five large stator slots 26 are symmetrically arranged with respect to the large stator slot 26 in the middle, that is, the large stator slots 26 and the small stator slots 25 of 9 slots per phase of each pole are distributed in a shape of small-large-small.
The method comprises the steps of collecting test data of the three-phase asynchronous motor using the stator punching sheet with the large and small slots with the number of 9 slots per pole and phase, saving copper at 0.1-0.25 Kg/KW, and enabling motor efficiency to meet and be slightly higher than standard IE2 and IE3 efficiency values.
Example four
The shape and size of the large stator slot 26 and the small stator slot 25 in the stator slot group 2 are the same as those of the first embodiment, the large stator slot 26 and the small stator slot 25 are distributed in a slot shape as shown in fig. 5 and 6, seven large stator slots 26 are arranged in the middle of the stator slot group 2, two small stator slots 25 are respectively arranged on two sides of the seven large stator slots 26, and two small stator slots 25 are symmetrically arranged relative to the large stator slot 26 in the middle, namely, the large stator slot 26 and the small stator slot 25 of each phase of 9 slots in each pole are distributed in a 'small-large-small' shape.
The method comprises the steps of collecting test data of the three-phase asynchronous motor using the stator punching sheet with the large and small slots with the number of 9 slots per pole and phase, saving copper at 0.1-0.25 Kg/KW, and enabling motor efficiency to meet and be slightly higher than standard IE2 and IE3 efficiency values.
EXAMPLE five
As shown in fig. 7 and 13, in the fifth embodiment, the stator slot group 2 is further provided with middle stator slots 27, the shape and size of the large stator slots 26 and the small stator slots 25 in the stator slot group 2 are the same as those in the first embodiment, the area of the middle stator slots 27 is between the area of the small stator slots 25 and the area of the large stator slots 26, and the central angles between the adjacent large stator slots 26, the small stator slots 25 and the middle stator slots 27 are all equal; the groove shape distribution of the large stator groove 26, the small stator groove 25 and the middle stator groove 27 in the stator groove group 2 is as follows: a large stator slot 26 is arranged in the middle of the stator slot group 2, three small stator slots 25 are respectively arranged on two sides of the stator slot group 2, the small stator slots 25 on two sides of the stator slot group 2 are symmetrically arranged around the large stator slot 26, and two middle stator slots 27 are respectively symmetrically arranged between the large stator slot 26 and the small stator slots 25 on two sides, namely, the large stator slot 26, the small stator slot 25 and the middle stator slot 27 of each phase of 9 slots of each pole are distributed in a mode of 'small-middle-large-middle-small'.
The method comprises the steps of collecting test data of the three-phase asynchronous motor using the stator punching sheet with the large and small slots with the number of 9 slots per pole and phase, saving copper at 0.1-0.25 Kg/KW, and enabling motor efficiency to meet and be slightly higher than standard IE2 and IE3 efficiency values.
EXAMPLE six
The shape and size of the large stator slot 26, the small stator slot 25 and the middle stator slot 27 in the stator slot group 2 are the same as those of the fifth embodiment, the slot distribution of the large stator slot 26, the small stator slot 25 and the middle stator slot 27 is shown in fig. 8 and 13, three large stator slots 26 are arranged in the middle of the stator slot group 2, two small stator slots 25 are respectively arranged at two sides of the stator slot group 2, the small stator slots 25 at two sides are symmetrically arranged relative to the large stator slot 26 at the middle position, and two middle stator slots 27 are respectively arranged between the large stator slot 26 and the small stator slots 25 at two sides, i.e. the distribution of the large stator slot 26, the small stator slot 25 and the middle stator slot 27 of each phase of 9 slots at each pole is "small-middle-large-middle-small".
The method comprises the steps of collecting test data of the three-phase asynchronous motor using the stator punching sheet with the large and small slots with the number of 9 slots per pole and phase, saving copper at 0.1-0.25 Kg/KW, and enabling motor efficiency to meet and be slightly higher than standard IE2 and IE3 efficiency values.
EXAMPLE seven
The shape and size of the large stator slot 26, the small stator slot 25 and the middle stator slot 27 in the stator slot group 2 are the same as those of the fifth embodiment, the slot distribution of the large stator slot 26, the small stator slot 25 and the middle stator slot 27 is shown in fig. 9 and 13, three large stator slots 26 are arranged in the middle of the stator slot group 2, two small stator slots 25 are respectively arranged at two sides of the stator slot group 2, the small stator slots 25 at two sides are symmetrically arranged relative to the large stator slot 26 at the middle position, two middle stator slots 27 are respectively arranged between the large stator slot 26 and the small stator slots 25 at two sides, namely, the distribution of the large stator slot 26, the small stator slot 25 and the middle stator slot 27 of each phase of 9 slots is small-middle-large-middle-small.
The method comprises the steps of collecting test data of the three-phase asynchronous motor using the stator punching sheet with the large and small slots with the number of 9 slots per pole and phase, saving copper at 0.1-0.25 Kg/KW, and enabling motor efficiency to meet and be slightly higher than standard IE2 and IE3 efficiency values.
Example eight
The shape and size of the large stator slot 26, the small stator slot 25 and the middle stator slot 27 in the stator slot group 2 are the same as those of the fifth embodiment, the slot shape distribution of the large stator slot 26, the small stator slot 25 and the middle stator slot 27 is shown in fig. 10 and 13, one large stator slot 26 is arranged in the middle of the stator slot group 2, two small stator slots 25 are respectively arranged at two sides of the stator slot group 2, and the two small stator slots 25 are symmetrically arranged relative to the large stator slot 26; the two middle stator slots 27 are respectively arranged between the large stator slot 26 and the small stator slots 25 at two sides, and the two middle stator slots 27 are symmetrically arranged relative to the large stator slot 26, namely, the distribution of the large stator slot 26, the small stator slot 25 and the middle stator slot 27 of each phase of 9 slots per pole is small-middle-large-middle-small.
The method comprises the steps of collecting test data of the three-phase asynchronous motor using the stator punching sheet with the large and small slots with the number of 9 slots per pole and phase, saving copper at 0.1-0.25 Kg/KW, and enabling motor efficiency to meet and be slightly higher than standard IE2 and IE3 efficiency values.
Example nine
The shape and size of the large stator slot 26, the small stator slot 25 and the middle stator slot 27 in the stator slot group 2 are the same as those of the fifth embodiment, the slot shape distribution of the large stator slot 26, the small stator slot 25 and the middle stator slot 27 is shown in fig. 11 and 13, three large stator slots 26 are arranged in the middle of the stator slot group 2, two sides of the stator slot group 2 are respectively provided with one small stator slot 25, and two small stator slots 25 are symmetrically arranged relative to the large stator slot 26 in the middle; two middle stator slots 27 are respectively arranged between the three large stator slots 26 and the small stator slots 25 at both sides, and the two middle stator slots 27 are symmetrically arranged about the large stator slot 26 at the middle position, namely, the distribution of the large stator slot 26, the small stator slot 25 and the middle stator slot 27 of each phase of 9 slots at each pole is 'small-middle-large-middle-small'.
The method comprises the steps of collecting test data of the three-phase asynchronous motor using the stator punching sheet with the large and small slots with the number of 9 slots per pole and phase, saving copper at 0.1-0.25 Kg/KW, and enabling motor efficiency to meet and be slightly higher than standard IE2 and IE3 efficiency values.
Example ten
The shape and size of the large stator slot 26, the small stator slot 25 and the middle stator slot 27 in the stator slot group 2 are the same as those of the fifth embodiment, the slot shape distribution of the large stator slot 26, the small stator slot 25 and the middle stator slot 27 is shown in fig. 12 and 13, one large stator slot 26 is arranged in the middle of the stator slot group 2, two sides of the stator slot group 2 are respectively provided with one small stator slot 25, and the two small stator slots 25 are symmetrically arranged relative to the large stator slot 26; the three middle stator slots 27 are respectively arranged between the large stator slot 26 and the small stator slots 25 at two sides, the three middle stator slots 27 and the large stator slots 26 are symmetrically arranged, namely the large stator slot 26, the small stator slot 25 and the middle stator slot 27 of each phase of 9 slots of each pole are distributed in a small-middle-large-middle-small mode.
The method comprises the steps of collecting test data of the three-phase asynchronous motor using the stator punching sheet with the large and small slots with the number of 9 slots per pole and phase, saving copper at 0.1-0.25 Kg/KW, and enabling motor efficiency to meet and be slightly higher than standard IE2 and IE3 efficiency values.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. The utility model provides a big or small groove stator punching that every utmost point every looks slot number is 9, it includes the base (1) of ring shape, its characterized in that: at least six groups of stator slot groups (2) for placing copper wires are radially and uniformly arranged on the annular surface of the substrate (1) along the circumferential direction of the substrate (1) according to the motor stage number, the number of slots per pole and per phase in each group of stator slot groups (2) is 9, each stator slot group (2) comprises a large stator slot (26) and a small stator slot (25), the area of the small stator slot (25) is 80% -95% of the area of the large stator slot (26), the central angles between the adjacent large stator slot (26) and the small stator slot (25) are equal, and the groove shapes of the large stator slot (26) and the small stator slot (25) in the stator slot group (2) are distributed in one or two of the following groove shape distribution forms:
1) the large stator slot (26) is arranged in the middle of the stator slot group (2), four small stator slots (25) are respectively arranged on two sides of the large stator slot (26), and the small stator slots (25) on two sides of the large stator slot (26) are symmetrically arranged relative to the large stator slot (26);
2) the three large stator slots (26) are arranged in the middle of the stator slot group (2), the two sides of the three large stator slots (26) are respectively provided with three small stator slots (25), and the small stator slots (25) on the two sides of the three large stator slots (26) are symmetrically arranged relative to the large stator slot (26) in the middle;
3) the five large stator slots (26) are arranged in the middle of the stator slot group (2), two small stator slots (25) are respectively arranged on two sides of the five large stator slots (26), and the small stator slots (25) on two sides of the five large stator slots (26) are symmetrically arranged relative to the large stator slot (26) in the middle;
4) seven large stator slots (26) are arranged in the middle of the stator slot group (2), two sides of the seven large stator slots (26) are respectively provided with a small stator slot (25), and the two small stator slots (25) are symmetrically arranged relative to the large stator slot (26) in the middle;
the large stator groove (26) or the small stator groove (25) comprises a rectangular groove (21), a first isosceles trapezoid-shaped groove (22), a second isosceles trapezoid-shaped groove (23) and a semicircular groove (24), one end, close to the inner circular surface of the substrate (1), of the large stator groove (26) or the small stator groove is provided with the rectangular groove (21), the width of the rectangular groove (21) is 2.5-4.2 mm, and the height of the rectangular groove (21) is 0.9-2.0 mm; the second isosceles trapezoid groove (23) is arranged at one end, far away from the center of a circle, of the first isosceles trapezoid groove (22), the upper bottom edge of the first isosceles trapezoid groove (22) is collinear with the long edge of the rectangular groove (21), the lower bottom edge of the first isosceles trapezoid groove (22) is collinear with the upper bottom edge of the second isosceles trapezoid groove (23), the width of the lower bottom edge of the first isosceles trapezoid groove (22) is 5-10 mm, the included angle between the bevel edge and the lower bottom edge of the first isosceles trapezoid groove (22) is 20-30 degrees, the width of the lower bottom edge of the second isosceles trapezoid groove (23) is 8-15 mm, and the height of the second isosceles trapezoid groove (23) is 12-40 mm; the semicircular groove (24) is arranged at the position of the lower bottom edge of the second isosceles trapezoid groove (23), and the diameter of the semicircular groove (24) is equal to the width of the lower bottom edge of the second isosceles trapezoid groove (23).
2. The stator punching sheet with the large and small slots, wherein the number of slots of each pole and each phase is 9, according to claim 1, is characterized in that: the stator slot group (2) is also provided with a middle stator slot (27), the area of the middle stator slot (27) is between the area of the small stator slot (25) and the area of the large stator slot (26), and the central angles among the adjacent large stator slot (26), the small stator slot (25) and the middle stator slot (27) are equal; the groove shape distribution of the large stator groove (26), the small stator groove (25) and the middle stator groove (27) in the stator groove group (2) is one or two of the following groove shape distribution forms:
1) the large stator slot (26) is arranged in the middle of the stator slot group (2), three small stator slots (25) are respectively arranged on two sides of the stator slot group (2), the small stator slots (25) on two sides of the stator slot group (2) are symmetrically arranged relative to the large stator slot (26), and the two middle stator slots (27) are respectively symmetrically arranged between the large stator slot (26) and the small stator slots (25) on two sides;
2) the three large stator slots (26) are arranged in the middle of the stator slot group (2), two small stator slots (25) are respectively arranged on two sides of the stator slot group (2), the small stator slots (25) on the two sides are symmetrically arranged relative to the large stator slot (26) in the middle, and the two middle stator slots (27) are respectively arranged between the large stator slot (26) and the small stator slots (25) on the two sides;
3) the five large stator slots (26) are arranged in the middle of the stator slot group (2), two small stator slots (25) are respectively arranged on two sides of the stator slot group (2), the two small stator slots (25) are symmetrically arranged relative to the large stator slot (26) in the middle, and the two middle stator slots (27) are respectively arranged between the large stator slot (26) and the small stator slots (25) on two sides;
4) the large stator slot (26) is arranged in the middle of the stator slot group (2), two small stator slots (25) are respectively arranged on two sides of the stator slot group (2), and the two small stator slots (25) are symmetrically arranged relative to the large stator slot (26); the two middle stator slots (27) are respectively arranged between the large stator slot (26) and the small stator slots (25) on the two sides, and the two middle stator slots (27) are symmetrically arranged relative to the large stator slot (26);
5) the three large stator slots (26) are arranged in the middle of the stator slot group (2), two small stator slots (25) are respectively arranged on two sides of the stator slot group (2), and the two small stator slots (25) are symmetrically arranged relative to the large stator slot (26) in the middle; the two middle stator slots (27) are respectively arranged between the three large stator slots (26) and the small stator slots (25) at two sides, and the two middle stator slots (27) are symmetrically arranged relative to the large stator slot (26) at the middle position;
6) the large stator slot (26) is arranged in the middle of the stator slot group (2), two small stator slots (25) are respectively arranged on two sides of the stator slot group (2), and the two small stator slots (25) are symmetrically arranged relative to the large stator slot (26); the three middle stator slots (27) are respectively arranged between the large stator slot (26) and the small stator slots (25) on the two sides, and the three middle stator slots (27) and the large stator slots (26) are symmetrically arranged.
3. The stator punching sheet with the large and small slots, wherein the number of slots of each pole and each phase is 9, according to claim 1, is characterized in that: the outer disc of substrate (1) is gone up and is evenly arranged 8 ~ 16 buckle piece grooves (3) that are used for installing the buckle piece along the circumferencial direction of substrate (1), the lower base of buckle piece groove (3) sets up to the straight line, and the upper base of buckle piece groove (3) is along the circumferencial direction natural opening of substrate (1), is provided with reason piece groove (4) in the bottom of arbitrary buckle piece groove (3) wherein, the shape of reason piece groove (4) is rectangle or trapezoidal.
4. The large-small slot stator punching sheet with the number of slots per pole and phase being 9 as claimed in claim 3, wherein: the width of the buckle piece groove (3) is 14-25 mm, the height is 3-5 mm, and the included angle between the bevel edge and the bottom edge of the buckle piece groove (3) is 15-25 degrees.
5. The stator punching sheet with the large and small slots, wherein the number of slots of each pole and each phase is 9, according to claim 1, is characterized in that: 27 multiplied by n stator slots are uniformly distributed in the large stator slot and the small stator slot in the stator slot group (2) on the inner circular ring surface of the substrate (1) in a radial mode along the circumferential direction of the substrate (1), wherein n is the number of poles of the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921057947.0U CN210092980U (en) | 2019-07-09 | 2019-07-09 | Stator punching sheet with large and small slots, wherein the number of slots of each pole and each phase is 9 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921057947.0U CN210092980U (en) | 2019-07-09 | 2019-07-09 | Stator punching sheet with large and small slots, wherein the number of slots of each pole and each phase is 9 |
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| Publication Number | Publication Date |
|---|---|
| CN210092980U true CN210092980U (en) | 2020-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921057947.0U Active CN210092980U (en) | 2019-07-09 | 2019-07-09 | Stator punching sheet with large and small slots, wherein the number of slots of each pole and each phase is 9 |
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| CN (1) | CN210092980U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110289710A (en) * | 2019-07-09 | 2019-09-27 | 山西电机制造有限公司 | A kind of big sulculus stator punching that MgO-ZrO_2 brick is 9 |
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2019
- 2019-07-09 CN CN201921057947.0U patent/CN210092980U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110289710A (en) * | 2019-07-09 | 2019-09-27 | 山西电机制造有限公司 | A kind of big sulculus stator punching that MgO-ZrO_2 brick is 9 |
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