CN219018553U - Motor stator punching sheet, motor and compressor - Google Patents
Motor stator punching sheet, motor and compressor Download PDFInfo
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- CN219018553U CN219018553U CN202222291014.6U CN202222291014U CN219018553U CN 219018553 U CN219018553 U CN 219018553U CN 202222291014 U CN202222291014 U CN 202222291014U CN 219018553 U CN219018553 U CN 219018553U
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Abstract
The application relates to a motor stator punching sheet, a motor and a compressor. The motor stator punching sheet comprises: the middle part of the punching body is provided with a through hole; n wire embedding groove groups are arranged in the circumferential direction of the through hole; the wire embedding groove group comprises an A-type wire embedding groove, a B-type wire embedding groove and a C-type wire embedding groove; the outer edge of the punching sheet body is sequentially provided with an arc edge, a first trimming edge and a second trimming edge; the A-type rule groove corresponds to the first trimming, the B-type rule groove corresponds to the circular arc edge, and the C-type rule groove corresponds to the second trimming. The distance between the bottom of the A-type wire embedding groove, the bottom of the B-type wire embedding groove and the bottom of the C-type wire embedding groove and the edge of the punching sheet body is smaller than M in any two distance difference ratio. According to the scheme, the widths of the stator yokes can be enabled to be consistent, so that the phenomenon of uneven magnetic density distribution of the stator punching sheet of the existing motor is improved, the temperature rise of the motor can be prevented, and the performance of the motor is improved.
Description
Technical Field
The application relates to the technical field of motors, in particular to a motor stator punching sheet, a motor and a compressor.
Background
The practical application shows that the slot type of the stator punching sheet of the existing motor is too single, and is mostly 1 or 2 slot types, so that the lengths of the distances from the slot bottom to the outer contour of the stator (namely the width of the stator yoke) are different, the magnetic density saturation of the stator punching sheet of the motor is concentrated at the narrowest part of the stator yoke, and the magnetic density of the wider part of the stator yoke is sparse and has waste. Thereby causing maldistribution of the magnetic density of the magnetic field. Because of uneven magnetic density distribution of the magnetic field, local magnetic field is too dense, so that the temperature of the motor is increased and the performance is reduced.
Therefore, it is necessary to provide a motor stator punching sheet, which can improve the phenomenon of uneven magnetic density distribution of the existing motor stator punching sheet, so as to avoid performance degradation caused by motor temperature rise.
Disclosure of Invention
In order to overcome the problems in the related art, the application provides a motor stator punching sheet, which can improve the phenomenon of uneven magnetic density distribution of the existing motor stator punching sheet, thereby avoiding performance degradation caused by motor temperature rise.
A first aspect of the present application provides a motor stator lamination, comprising a lamination body,
the middle part of the punching sheet body is provided with a through hole;
n wire embedding groove groups are arranged in the circumferential direction of the through hole;
the wire embedding groove group comprises an A-type wire embedding groove, a B-type wire embedding groove and a C-type wire embedding groove;
the outer edge of the punching sheet body comprises an arc edge, a first trimming edge and a second trimming edge;
the A-type wire inserting groove corresponds to the first trimming, the B-type wire inserting groove corresponds to the circular arc edge, and the C-type wire inserting groove corresponds to the second trimming;
the difference ratio of any two distances is smaller than M.
In one embodiment, the number of the circular arc edges is 6, the number of the first trimming edges is 2, the number of the second trimming edges is 4, and the outer edges of the punching sheet body are annularly distributed according to the first trimming edges, the circular arc edges, the second trimming edges and the circular arc edges in sequence;
the N wire embedding groove groups are 4 wire embedding groove groups, and the 4 wire embedding groove groups are distributed in the clock direction to be in central symmetry.
In one embodiment, the wire embedding groove group is sequentially provided with one A-type wire embedding groove, two B-type wire embedding grooves, two C-type wire embedding grooves and one B-type wire embedding groove.
In one embodiment, the groove depth of the A-type wire embedding groove, the groove depth of the B-type wire embedding groove and the groove depth of the C-type wire embedding groove are respectively H 1 ，H 3 ，H 2 The H is 1 < said H 2 < said H 3 。
In one embodiment, the distances from the first trimming and the second trimming to the center of the punching body are respectively L 1 ，L 2 The L is 1 < said L 2 。
In one embodiment, the wire embedding groove group is sequentially provided with one A-type wire embedding groove, four C-type wire embedding grooves and one B-type wire embedding groove; the A-type wire inserting groove corresponds to the first trimming, the B-type wire inserting groove corresponds to the circular arc edge, two C-type wire inserting grooves close to the A-type wire inserting groove correspond to the circular arc edge, and two C-type wire inserting grooves close to the B-type wire inserting groove correspond to the second trimming.
In one embodiment, the wire embedding groove group further comprises a D-shaped wire embedding groove, and the wire embedding groove group is sequentially distributed with one A-shaped wire embedding grooveThe groove, two the D type wire embedding grooves, two the C type wire embedding grooves and one the B type wire embedding groove, the groove depth of the D type wire embedding groove is H 4 The H4 is not equal to the H3, and the H4 is more than the H2 is more than the H1.
In one embodiment, the punching sheet body is provided with windings, the windings are symmetrically distributed, and the windings comprise a main winding and an auxiliary winding.
A second aspect of the present application provides an electric machine comprising a stator assembly comprising a motor stator lamination, the motor stator lamination being any one of the motor stator laminations described above.
A third aspect of the present application provides a compressor comprising the above-mentioned motor.
The technical scheme that this application provided can include following beneficial effect: the middle part of the punching sheet body of the motor stator punching sheet is provided with a through hole; n wire embedding groove groups are arranged in the circumferential direction of the through hole; the wire embedding groove group comprises an A-type wire embedding groove, a B-type wire embedding groove and a C-type wire embedding groove; the outer edge of the punching sheet body is sequentially provided with an arc edge, a first trimming edge and a second trimming edge; the A-type rule groove corresponds to the first trimming, the B-type rule groove corresponds to the circular arc edge, and the C-type rule groove corresponds to the second trimming. The distance between the bottom of the A-type wire embedding groove, the bottom of the B-type wire embedding groove and the bottom of the C-type wire embedding groove and the edge of the punching sheet body is smaller than M in any two distance difference ratio.
This application is through setting up of A type wire embedding groove, B type wire embedding groove and C type wire embedding groove, the groove depth of different wire embedding grooves is different, the space between length direction and width direction of punching body has been fully utilized in setting up of this structure, and make the tank bottom of A type wire embedding groove, the tank bottom of B type wire embedding groove and the tank bottom of C type wire embedding groove be less than M to the distance of punching body's edge, arbitrary two distance difference ratio, the setting of this structure can make stator yoke width close tend to the level of concordance, thereby improve the phenomenon that current motor stator punching magnetism density distribution is uneven, can prevent the motor intensification and improved the performance of motor.
In addition, the groove depth of different embedded grooves is different, and the space between the length direction and the width direction of the punching sheet body is fully utilized to increase the groove area, so that the motor efficiency is improved.
The motor stator punching sheet fully utilizes the structural characteristics of the circular arc edge, the first trimming edge and the second trimming edge of the punching sheet body to ensure enough groove area to improve motor efficiency.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.
FIG. 1 is a schematic view of a prior art motor stator lamination shown in an embodiment of the present application;
FIG. 2 is a schematic structural view of a motor stator lamination shown in an embodiment of the present application;
FIG. 3 is a schematic diagram of another slot distribution of a motor stator lamination shown in an embodiment of the present application;
FIG. 4 is a schematic diagram of another slot distribution of a motor stator lamination shown in an embodiment of the present application;
FIG. 5 is a schematic view of the structure of the first and second trim (including segmented structure) of the motor stator laminations shown in the embodiments of the present application;
FIG. 6 is a schematic view of a circular arc edge (including a segmented structure) of a motor stator lamination shown in an embodiment of the present application;
FIG. 7 is a schematic diagram of a winding distribution structure of a motor stator lamination shown in an embodiment of the present application;
FIG. 8 is a schematic diagram of another distribution of windings of a motor stator lamination shown in an embodiment of the present application;
fig. 9 is a schematic diagram of another distribution structure of windings of a motor stator lamination according to an embodiment of the present disclosure.
1. A punching body; 11. a through hole; 12. arc edges; 13. a first trimming step; 14.a second trimming step; 2. a wire embedding groove group; 21. a-type wire embedding groove; 22. b-type wire embedding grooves; 23. c-shaped wire embedding grooves; 24. d-shaped wire embedding groove.
Detailed Description
Preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, a first message may also be referred to as a second message, and similarly, a second message may also be referred to as a first message, without departing from the scope of the present application. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Example 1
The practical application shows that the slot type of the stator punching sheet of the existing motor is too single, and is mostly 1 or 2 slot types, so that the lengths of the distances from the slot bottom to the outer contour of the stator (namely the width of the stator yoke) are different, the magnetic density saturation of the stator punching sheet of the motor is concentrated at the narrowest part of the stator yoke, and the magnetic density of the wider part of the stator yoke is sparse and has waste. Thereby causing maldistribution of the magnetic density of the magnetic field. Because of uneven magnetic density distribution of the magnetic field, local magnetic field is too dense, so that the temperature of the motor is increased and the performance is reduced.
Therefore, it is necessary to provide a motor stator punching sheet, which can improve the phenomenon of uneven magnetic density distribution of the existing motor stator punching sheet, so as to avoid performance degradation caused by motor temperature rise.
To above-mentioned problem, this application embodiment provides a motor stator towards piece, can improve the phenomenon that current motor stator towards piece magnetism density distribution is uneven to avoid the motor to heat up and lead to the performance to drop.
The following describes the technical scheme of the embodiments of the present application in detail with reference to the accompanying drawings.
FIG. 1 is a schematic view of a prior art motor stator lamination shown in an embodiment of the present application;
fig. 2 is a schematic structural view of a motor stator lamination shown in an embodiment of the present application.
See fig. 2.
The motor stator punching sheet of the embodiment of the application comprises a punching sheet body 1, and a stator core is formed by laminating a plurality of stator punching sheets.
The punching body 1 middle part is equipped with through-hole 11, and through-hole 11 that this application embodiment is used for setting up the through-hole 11 of rotor promptly, and its size can according to actual production setting, this application does not do the restriction.
N wire embedding groove groups 2 are arranged in the circumferential direction of the through hole 11; the coil inserting groove group 2 comprises an A-type coil inserting groove 21, a B-type coil inserting groove 22 and a C-type coil inserting groove 23; the groove depths of the a-type wire embedding groove 21, the B-type wire embedding groove 22 and the C-type wire embedding groove 23 are different, and the groove depth refers to the distance from the notch to the groove bottom in the present application, as shown in fig. 2. This application is through setting up of A type rule groove 21, B type rule groove 22 and C type rule groove 23, and the groove depth of different rule grooves is different, and the setting of this structure make full use of towards piece body 1 in the space between length direction and the width direction, set up the groove depth of rule groove promptly according to the shape of towards piece body 1, make full use of towards piece body 1's space, increased the groove area of rule groove as far as, through increasing the groove area, can also improve the efficiency of motor.
The outer edge of the punching sheet body 1 is sequentially provided with an arc edge 12, a first trimming edge 13 and a second trimming edge 14;
the A-shaped wire embedding groove 21 corresponds to the first cutting edge 13, the B-shaped wire embedding groove 22 corresponds to the circular arc edge 12, and the C-shaped wire embedding groove 23 corresponds to the second cutting edge 14. The distances from the bottom of the A-type wire embedding groove 21, the bottom of the B-type wire embedding groove 22 and the bottom of the C-type wire embedding groove 23 to the edge of the punching sheet body 1 are smaller than M in any two-distance difference ratio. Any two distance difference ratio of any two distances is smaller than M, and refers to a difference ratio of any two distances between a distance from a bottom of the a-type wire-embedding groove 21 to an edge of the sheet body 1, a distance from a bottom of the C-type wire-embedding groove 23 to an edge of the sheet body 1, and a distance from a bottom of the B-type wire-embedding groove 22 to an edge of the sheet body 1 is smaller than M, (a distance from a bottom of the a-type wire-embedding groove 21 to an edge of the sheet body 1, a distance from a bottom of the B-type wire-embedding groove 22 to an edge of the sheet body 1)/a distance from a bottom of the B-type wire-embedding groove 22 to an edge of the sheet body 1 is smaller than M, (a distance from a bottom of the C-type wire-embedding groove 21 to an edge of the sheet body 1) -a distance from a bottom of the B-type wire-embedding groove 22 to an edge of the sheet body 1)/a distance from a bottom of the B-type wire-embedding groove 23 to an edge of the sheet body 1 is smaller than M, and a distance from a bottom of the B-type wire-embedding groove 22 to an edge of the sheet body 1 is smaller than M is equal to or equal to 10%.
The motor stator punching sheet fully utilizes the circular arc edge 12, the first trimming edge 13 and the second trimming edge 14 of the punching sheet body 1, can ensure enough groove area to improve motor efficiency, can also enable the groove bottom of the A-type wire embedding groove 21, the groove bottom of the B-type wire embedding groove 22 and the groove bottom of the C-type wire embedding groove 23 to be less than M in a distance from the edge of the punching sheet body 1, has the advantages that the width of a stator yoke part is close to tend to be uniform, the phenomenon of uneven magnetic density distribution of the existing motor stator punching sheet is improved, the temperature rise of a motor can be prevented, and the performance of the motor is improved. The width of the stator yoke refers to the distance from the bottom of the coil inserting groove to the outer edge of the punching body 1.
The beneficial effects of the embodiment of the application are that: the middle part of the motor stator punching sheet body is provided with a through hole; n wire embedding groove groups are arranged in the circumferential direction of the through hole; the wire embedding groove group comprises an A-type wire embedding groove, a B-type wire embedding groove and a C-type wire embedding groove; the outer edge of the punching sheet body is sequentially provided with an arc edge, a first trimming edge and a second trimming edge; the A-type rule groove corresponds to the first trimming, the B-type rule groove corresponds to the circular arc edge, and the C-type rule groove corresponds to the second trimming. The distance between the bottom of the A-type wire embedding groove, the bottom of the B-type wire embedding groove and the bottom of the C-type wire embedding groove and the edge of the punching sheet body is smaller than M in any two distance difference ratio.
This application is through setting up of A type wire embedding groove, B type wire embedding groove and C type wire embedding groove, the groove depth of different wire embedding grooves is different, the space between length direction and width direction of punching body has been fully utilized in setting up of this structure, and make the tank bottom of A type wire embedding groove, the tank bottom of B type wire embedding groove and the tank bottom of C type wire embedding groove be less than M to the distance of punching body's edge, arbitrary two distance difference ratio, the setting of this structure can make stator yoke width close tend to the level of concordance, thereby improve the phenomenon that current motor stator punching magnetism density distribution is uneven, can prevent the motor intensification and improved the performance of motor.
In addition, the groove depth of different embedded grooves is different, and the arrangement of the structure not only makes full use of the space between the length direction and the width direction of the punching sheet body, but also can improve the motor efficiency by increasing the area of the groove.
The motor stator punching sheet fully utilizes the circular arc edge, the first trimming edge and the second trimming edge of the punching sheet body to ensure enough groove area to improve motor efficiency.
Example two
The motor stator punching sheet introduced in the first embodiment can improve the phenomenon of uneven magnetic density distribution of the existing motor stator punching sheet, thereby avoiding performance degradation caused by motor temperature rise. In addition, one of the influencing factors of the motor efficiency is the area of the wire embedding groove of the stator punching sheet, namely, one of the methods for improving the motor efficiency is to improve the area of the wire embedding groove, but the area of the wire embedding groove is directly increased, so that the width of the magnetic circuit of the iron core is reduced, the magnetic circuit is saturated, and the purpose of improving the efficiency cannot be achieved. The embodiment of the application will further describe how the stator punching sheet of the motor can utilize the space of the punching sheet body to increase the slot area.
FIG. 2 is a schematic structural view of a motor stator lamination according to an embodiment of the present application
See fig. 2.
The motor stator punching of the embodiment of the application comprises a punching body 1,
the middle part of the punching body 1 is provided with a through hole 11, N rule groove groups 2 are arranged in the circumference of the through hole 11, each rule groove group 2 comprises an A-type rule groove 21, a B-type rule groove 22 and a C-type rule groove 23, the outer edge of the punching body 1 is sequentially provided with an arc edge 12, a first trimming edge 13 and a second trimming edge 14, the A-type rule groove 21 corresponds to the first trimming edge 13, the B-type rule groove 22 corresponds to the arc edge 12, and the C-type rule groove 23 corresponds to the second trimming edge 14.
The distances from the bottom of the A-type wire embedding groove 21, the bottom of the B-type wire embedding groove 22 and the bottom of the C-type wire embedding groove 23 to the edge of the punching sheet body 1 are smaller than M in any two-distance difference ratio.
The number of the circular arc edges 12 is 6, the number of the first trimming edges 13 is 2, the number of the second trimming edges 14 is 4, and the outer edges of the punching sheet body 1 are distributed annularly according to the first trimming edges 13, the circular arc edges 12, the second trimming edges 14 and the circular arc edges 12 in sequence.
Namely, the outer edge shape of the whole punching body 1 is the structure of a first trimming 13, an arc edge 12, a second trimming 14, an arc edge 12, a first trimming 13, an arc edge 12, a second trimming 14 and an arc edge 12 respectively.
The N wire inserting groove groups 2 are 4 wire inserting groove groups 2, and the 4 wire inserting groove groups 2 are distributed in the clock direction to be in central symmetry. Namely, according to the XX 'horizontal line and the YY' vertical line of the punching body 1, 4 groups of rule slots are respectively distributed on two sides of the XX 'horizontal line and the YY' vertical line of the punching body 1, and are in a distribution structure of XX 'horizontal line symmetry and YY' vertical line symmetry. As shown in the figure 2 of the drawings,
the wire embedding groove group 2 is sequentially provided with an A-type wire embedding groove 21, two B-type wire embedding grooves 22, two C-type wire embedding grooves 23 and one B-type wire embedding groove 22.
Namely, 24 line grooves are provided in total in the circumferential direction of the through hole 11, namely four a-type line grooves 21, twelve B-type line grooves 22, and eight C-type line grooves 23. The wire embedding grooves are distributed in a central symmetry mode.
The groove depth of the A-type wire embedding groove 21, the groove depth of the B-type wire embedding groove 22 and the groove depth of the C-type wire embedding groove 23 are respectively H1, H3 and H2, and H1 is less than H2 and less than H3. The groove depth in the embodiment of the present application is the distance from the notch to the groove bottom, as shown in fig. 2.
The distances between the first trimming edge 13 and the second trimming edge 14 and the circle center of the punching sheet body 1 are L1 and L2 respectively, and L1 is smaller than L2.
Namely, the groove depth H3 of the B-shaped wire inserting groove 22 corresponding to the circular arc edge 12 is the deepest.
The motor stator is also provided with windings, which generally comprise a main winding R0 and an auxiliary winding R1, wherein the groove depth of the A-type wire embedding groove 21, the groove depth of the B-type wire embedding groove 22 and the groove depth of the C-type wire embedding groove 23 are respectively H1, H3, H2, and H1 < H2 < H3, so that two groups of windings are distributed with a certain gradient from the largest area of the groove to the small gradual change of the area of the groove, the overall winding distribution is more similar to positive and negative, the groove type utilization rate of the windings after sinusoidal distribution is solved, harmonic magnetic potential can be weakened, the winding wire loss is reduced, and the running performance of the motor in rated power is improved.
The beneficial effects of the embodiment of the application are that: the groove depth of the A-type embedded groove, the groove depth of the B-type embedded groove and the groove depth of the C-type embedded groove are H respectively 1 ，H 3 ，H 2 ，H 1 ＜H 2 ＜H 3 The arrangement of the two groups of windings enables the two groups of windings to be distributed with a certain gradient from the largest area of the groove to gradually change from small area of the groove, the distribution of the whole windings is more similar to positive and negative, the groove type utilization rate of the windings after sinusoidal distribution is solved, harmonic magnetic potential can be weakened, winding wire loss is reduced, and the running performance of the motor in rated power is improved.
Example III
The above embodiment describes the slot depth distribution of the stator punching sheet wire-embedding slots of the motor, and in practical application, the a-type wire-embedding slots, the B-type wire-embedding slots and the C-type wire-embedding slots have another distribution structure.
FIG. 3 is a schematic diagram of another slot distribution of a motor stator lamination shown in an embodiment of the present application;
FIG. 4 is a schematic diagram of another slot distribution of a motor stator lamination shown in an embodiment of the present application;
see fig. 3 and 4.
The embodiment of the application provides another wire embedding groove distribution structure of a motor stator punching sheet, in particular to a wire embedding groove distribution structure of a motor stator punching sheet
The wire embedding groove group 2 is sequentially provided with an A-type wire embedding groove 21, four C-type wire embedding grooves 23 and a B-type wire embedding groove 22; the A-shaped wire embedding groove 21 corresponds to the first cutting edge 13, the B-shaped wire embedding groove 22 corresponds to the circular arc edge 12, two C-shaped wire embedding grooves 23 close to the A-shaped wire embedding groove 21 correspond to the circular arc edge 12, and two C-shaped wire embedding grooves 23 close to the B-shaped wire embedding groove 22 correspond to the second cutting edge 14. As shown in fig. 3.
Namely, the motor stator punching sheet in the embodiment of the application comprises 24 wire embedding grooves, namely four A-type wire embedding grooves 21, sixteen C-type wire embedding grooves 23 and four B-type wire embedding grooves 22, wherein the wire embedding grooves are distributed in a central symmetry manner.
In addition to the above-mentioned slot types, the embodiment of the present application further provides another wire embedding slot distribution of the motor stator punching sheet, specifically, the motor stator punching sheet further includes a D-type wire embedding slot, the wire embedding slot group 2 sequentially distributes an a-type wire embedding slot 21, two D-type wire embedding slots, two C-type wire embedding slots 23 and a B-type wire embedding slot 22, the slot depth of the D-type wire embedding slot is H4, h4+.h3, H4 > H2 > H1, that is, H4 is greater than or less than H3, H4 is greater than H2, and H2 is greater than H1.
The motor stator punching sheet comprises 24 wire embedding grooves, namely four A-type wire embedding grooves 21, eight D-type wire embedding grooves, eight C-type wire embedding grooves 23 and four B-type wire embedding grooves 22, wherein the wire embedding grooves are distributed in a central symmetry mode. As shown in fig. 4.
The punching sheet body 1 is provided with windings which are symmetrically distributed and comprise a main winding R0 and an auxiliary winding R1. The distribution of the main winding R0 is in XX 'horizontal line symmetry, and the distribution of the auxiliary winding R1 is in YY' vertical line symmetry.
Fig. 7, fig. 8, and fig. 9 specifically show a schematic diagram of a winding distribution structure of a stator lamination of a motor according to an embodiment of the present application;
FIG. 8 is a schematic diagram of another distribution of windings of a motor stator lamination shown in an embodiment of the present application;
fig. 9 is a schematic diagram of another distribution structure of windings of a motor stator lamination according to an embodiment of the present disclosure.
As shown, the solid line represents the main winding R0, and the broken line represents the sub-winding R1.
The arc edge 12 in the embodiment of the present application may be a segmented structure F based on the original arc profile, where the segmented structure F may be disposed at the middle part of the arc, and the segmented structure F may be disposed at two ends of the middle part of the arc, as shown in fig. 6, and the processing of the segmented structure F about the arc edge 12 is all within the protection scope of the present utility model.
The first trimming edge 13 and the second trimming edge 14 in the embodiment of the present application may be a segmented structure F based on the profiles of the first trimming edge 13 and the second trimming edge 14. The sectional structure F can be arranged at the middle part of the trimming, and the sectional structure F can be arranged at the two ends of the middle part of the trimming. As shown in fig. 5, it is within the scope of the present utility model to process the segmented structure F of the second cut edge 14 with respect to the first cut edge 13.
The beneficial effects of the embodiment of the application are that: the groove depths of the different embedded grooves are different, so that the space between the length direction and the width direction of the punching sheet body is fully utilized, and the motor efficiency can be improved by increasing the groove area. The motor stator punching sheet fully utilizes the circular arc edge, the first trimming edge and the second trimming edge of the punching sheet body to ensure enough groove area to improve motor efficiency.
The embodiments of the present application have been described above, the foregoing description is exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the improvement of technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. The utility model provides a motor stator towards piece which characterized in that: comprises a punching sheet body (1),
the middle part of the punching sheet body (1) is provided with a through hole (11);
n wire embedding groove groups (2) are arranged in the circumferential direction of the through hole (11);
the wire embedding groove group (2) comprises an A-type wire embedding groove (21), a B-type wire embedding groove (22) and a C-type wire embedding groove (23);
the outer edge of the punching sheet body (1) comprises an arc edge (12), a first cutting edge (13) and a second cutting edge (14);
the A-type wire inserting groove (21) corresponds to the first trimming (13), the B-type wire inserting groove (22) corresponds to the circular arc edge (12), and the C-type wire inserting groove (23) corresponds to the second trimming (14);
the distance from the bottom of the A-type rule groove (21), the bottom of the B-type rule groove (22) and the bottom of the C-type rule groove (23) to the edge of the punching sheet body (1) is smaller than M in any two-distance difference ratio.
2. The motor stator lamination of claim 1, wherein:
the number of the circular arc edges (12) is 6, the number of the first trimming edges (13) is 2, the number of the second trimming edges (14) is 4, and the outer edges of the punching sheet body (1) are distributed in a ring shape according to the first trimming edges (13), the circular arc edges (12), the second trimming edges (14) and the circular arc edges (12) in sequence;
the N wire embedding groove groups (2) are 4 wire embedding groove groups (2), and the 4 wire embedding groove groups (2) are distributed in a clock direction to be in central symmetry.
3. The motor stator lamination of claim 2, wherein:
the wire embedding groove groups (2) are sequentially distributed with one A-type wire embedding groove (21), two B-type wire embedding grooves (22), two C-type wire embedding grooves (23) and one B-type wire embedding groove (22).
4. The motor stator lamination of claim 1, wherein:
the groove depth of the A-type wire inserting groove (21), the groove depth of the B-type wire inserting groove (22) and the groove depth of the C-type wire inserting groove (23) are respectively H1, H3 and H2, and H1 is smaller than H2 and smaller than H3.
5. The motor stator lamination of claim 1, wherein:
the distances from the first trimming edge (13) and the second trimming edge (14) to the circle center of the punching sheet body (1) are L1 and L2 respectively, and L1 is smaller than L2.
6. The motor stator lamination of claim 2, wherein:
the wire embedding groove group (2) is sequentially provided with an A-type wire embedding groove (21), four C-type wire embedding grooves (23) and one B-type wire embedding groove (22); two C-shaped wire inserting grooves (23) close to the A-shaped wire inserting grooves (21) correspond to the circular arc edges (12), and two C-shaped wire inserting grooves (23) close to the B-shaped wire inserting grooves (22) correspond to the second trimming edges (14).
7. The motor stator lamination of claim 4, wherein:
the wire embedding groove group (2) further comprises D-type wire embedding grooves, one A-type wire embedding groove (21), two D-type wire embedding grooves, two C-type wire embedding grooves (23) and one B-type wire embedding groove (22) are sequentially distributed in the wire embedding groove group (2), the groove depth of the D-type wire embedding groove is H4, H4 is not equal to H3, and H4 is more than H2 is more than H1.
8. The motor stator lamination of claim 1, wherein:
the punching sheet comprises a punching sheet body (1), wherein windings are arranged on the punching sheet body and symmetrically distributed, and the windings comprise a main winding and an auxiliary winding.
9. An electric motor, characterized in that: comprising a stator assembly comprising a motor stator lamination, the motor stator lamination being a motor stator lamination as claimed in any one of claims 1 to 8.
10. A compressor, characterized in that: comprising the motor of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222291014.6U CN219018553U (en) | 2022-08-30 | 2022-08-30 | Motor stator punching sheet, motor and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222291014.6U CN219018553U (en) | 2022-08-30 | 2022-08-30 | Motor stator punching sheet, motor and compressor |
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| Publication Number | Publication Date |
|---|---|
| CN219018553U true CN219018553U (en) | 2023-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222291014.6U Active CN219018553U (en) | 2022-08-30 | 2022-08-30 | Motor stator punching sheet, motor and compressor |
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| Country | Link |
|---|---|
| CN (1) | CN219018553U (en) |
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