CN217882990U - Stator punching sheet, stator, motor and electric appliance - Google Patents

Abstract

The utility model provides a stator is towards piece, stator, motor and electrical apparatus, the stator is towards the piece including: the yoke is annular; the straight teeth are connected with the yoke part; straight-tooth and split tooth are juxtaposed along the circumference of yoke portion, and the split tooth includes tooth root, first tooth portion and second tooth portion, and the tooth root is connected with yoke portion, and first tooth portion and second tooth portion all are connected with the tooth root, and the second tooth position is located first tooth portion both sides. Through the specific structure setting to straight-tooth and split teeth for the stator punching sheet can conveniently carry out the winding to straight-tooth and split teeth when carrying out the winding, and the coiling efficiency when being favorable to the winding has improved the manufacturing speed of motor.

Description

Stator punching sheet, stator, motor and electric appliance

Technical Field

The utility model relates to the technical field of electric motor, particularly, relate to a stator is towards piece, a stator, a motor and an electrical apparatus.

Background

At present, in the correlation technique, when carrying out the winding to the structure of the stator in the motor, often adopt automatic coiling or artifical coiling, nevertheless because the restriction of stator structure itself for no matter be automatic coiling or artifical coiling, all there is the big problem of the coiling degree of difficulty, make the stator efficiency when carrying out the winding lower, influence the manufacturing speed of motor.

SUMMERY OF THE UTILITY MODEL

The present invention aims at least solving one of the technical problems existing in the prior art or the related art.

Therefore, the utility model discloses a first aspect provides a stator punching sheet.

A second aspect of the present invention provides a stator.

A third aspect of the present invention provides an electric machine.

A fourth aspect of the present invention provides an electrical appliance.

In view of this, the utility model discloses the first aspect provides a stator punching sheet, include: a yoke, the yoke being annular; the straight teeth are connected with the yoke part; the split teeth comprise tooth roots, first tooth parts and second tooth parts, the tooth roots are connected with the yoke, the first tooth parts and the second tooth parts are connected with the tooth roots, and the second tooth parts are located on two sides of the first tooth parts.

The utility model provides a stator punching sheet includes yoke portion, straight-tooth and split tooth. Wherein, the yoke is cyclic annular, and straight-tooth and split tooth all are connected with annular yoke to set up side by side along the circumference of yoke, make straight-tooth and split tooth pass through the yoke and guarantee that its relative position is fixed.

Further, the split tooth includes a root, a first tooth, and a second tooth. Wherein, the tooth root is connected with yoke portion, and first tooth portion and second tooth portion are connected with the tooth root, and also first tooth portion and second tooth portion pass through the tooth root to be fixed on yoke portion, and then form the structure of stator punching with the straight-tooth.

Furthermore, according to the specific structure of the stator punching sheet, the convenience of the stator punching sheet during winding is improved when the stator punching sheet is wound, so that the efficient winding efficiency can be ensured no matter manual winding or automatic winding is performed, and the manufacturing speed of the motor is facilitated.

The utility model discloses a to the concrete structure setting of straight-tooth and split tooth to set up straight-tooth and split tooth along stator yoke circumference in turn, so, make when carrying out the winding to the stator punching, can conveniently carry out the winding to straight-tooth and split tooth, coiling efficiency when being favorable to the winding has improved the manufacturing speed of motor.

Additionally, the utility model provides an above-mentioned technical scheme stator towards piece can also have following additional technical characteristic:

in an aspect of the present invention, further, the number of the second teeth portions is at least two, and the second teeth portions include a first sub-tooth portion and a second sub-tooth portion; the first sub-tooth part is connected with the tooth root and extends towards the straight tooth; the second sub-tooth part is connected with the first sub-tooth part and extends to the center of the stator punching sheet along the radial direction.

In this technical solution, at least two second tooth portions are located at two side positions of the first tooth portion, that is, the second tooth portion and the first tooth portion are arranged in parallel in a staggered manner. The second tooth part comprises a first sub-tooth part and a second sub-tooth part, one end of the first sub-tooth part is connected with the tooth root, the other end of the first sub-tooth part extends towards the direction of the straight tooth, the second sub-tooth part is connected with the first sub-tooth part and extends towards the center of the stator punching sheet in the radial direction, so that the split tooth forms into a shape similar to a 'mountain', a structure of the second tooth part is formed, and the split tooth and the straight tooth are alternately arranged at the yoke part to form the stator punching sheet.

In an aspect of the present invention, further, the width of the tooth root is greater than the width of the second tooth portion.

In this solution, the width of the tooth root is greater than the width of the second tooth. It can be understood that when the width of the tooth root is relatively wide, the winding accommodated on the tooth root is relatively reduced, and the reduction of the winding can reduce the current of the winding, so that the power of the motor is correspondingly improved, the torque efficiency product of the motor is in a larger value, and the comprehensive performance of the motor is ensured.

Further, because at least two second tooth portions all are connected with the tooth root, lie in the both sides of tooth root promptly, consequently set up the width of tooth root for being greater than the width of second tooth portion and can guaranteeing to provide effective support for at least two second tooth portions for the motor is when the operation, and the difficult cracked condition that takes place of tooth root improves the life of tooth root, guarantees the performance of motor.

In an embodiment of the present invention, further, the width of the tooth root is greater than the width of the first sub-tooth portion, and the width of the tooth root is greater than the width of the second sub-tooth portion.

In this solution, the width of the tooth root is greater than the width of the first and second sub-teeth. It can understand, because the second sub-tooth portion is connected with first sub-tooth portion, and first sub-tooth portion is connected with connecting portion, sets up the width of tooth root to be greater than the width of first sub-tooth portion and second sub-tooth portion for the tooth root can provide stable support for first sub-tooth portion and second sub-tooth portion, avoids the motor when the operation, and cracked condition has appeared in the tooth root, has improved the intensity of tooth root.

Further, set up the width of tooth root the broad, can make the winding of tooth root reduce, that is to say the number of turns of wire winding reduces on the tooth root, so, tooth root winding current is less relatively, and the magnetic resistance also can correspondingly reduce, but the power of motor improves, has promoted the torque efficiency of motor, guarantees the comprehensive properties of motor.

In an aspect of the present invention, further, the width of the first sub-tooth portion is greater than or equal to the width of the second sub-tooth portion.

In this technical scheme, the width of first sub-tooth portion is more than or equal to the width of second sub-tooth portion, because second sub-tooth portion and first sub-tooth portion are connected, sets up the width of second sub-tooth portion to more than or equal to the width of second sub-tooth portion, can guarantee that first sub-tooth portion provides stable support for second sub-tooth portion. Specifically, when the width of the second sub-tooth portion is equal to that of the first sub-tooth portion, the first sub-tooth portion is not prone to breaking when supporting the second sub-tooth portion, the widths of the first sub-tooth portion and the second sub-tooth portion are equal, the number of windings of the first sub-tooth portion and the number of windings of the second sub-tooth portion are equal, current flowing through the first sub-tooth portion and the second sub-tooth portion are equal, and therefore comprehensive performance of the motor is improved. When the width of the second sub-tooth part is smaller than that of the first sub-tooth part, the first sub-tooth part can further support the second sub-tooth part in the running process of the motor, so that the first sub-tooth part is not prone to breaking, and the running stability of the motor is guaranteed.

In an aspect of the present invention, further, a sum of two times of the width of the second sub-tooth portion and the width of the first tooth portion is larger than the width of the tooth root.

In this solution, the width of the first tooth and the second sub-tooth defines the upper width limit of the tooth root, in particular, the sum of twice the width of the second sub-tooth and the width of the first tooth is greater than the width of the tooth root, so that the width of the tooth root is limited and an excessive width of the tooth root is avoided. That is to say, the width size of tooth root is relevant with the width of first tooth portion and second sub-tooth portion, has guaranteed the rationality of stator punching sheet structure, makes the comprehensive properties of motor obtain improving. And the upper limit of the width of the tooth root is limited by the widths of the first tooth part and the second sub tooth part, so that the number of windings on the tooth root is not too low or too high, the current of the windings on the tooth root is always in a preset range, and the torque efficiency and the performance of the motor during operation are ensured.

Further, through the width upper limit of restriction tooth root, can also avoid on the tooth root that the distance between second tooth portion and the straight-tooth is too close to influence magnetic density size peak value, output torque etc. when having guaranteed the overall performance of motor, stability when having promoted the motor operation.

In an embodiment of the present invention, further, an included angle between the first sub-tooth portion and the first tooth portion is less than or equal to 90 degrees.

In this solution, an angle between the first sub-tooth and the first tooth is equal to or smaller than 90 °. It can be understood that when the included angle between the first sub-tooth portion and the first tooth portion is set to be less than or equal to 90 degrees, when the first sub-tooth portion and the first tooth portion are wound, the convenience in winding can be improved, and similarly, when the motor needs to be maintained and disassembled, the coil can be conveniently disassembled from the first sub-tooth portion and the first tooth portion. By setting the included angle between the first sub-tooth portion and the first tooth portion to be equal to or smaller than 90 degrees, the efficiency of winding or disassembling the first sub-tooth portion and the first tooth portion can be improved.

In an embodiment of the present invention, further, an absolute value of a difference between a width of the yoke and a width of the second sub-tooth portion is a first value, and a ratio of the first value to the width of the second sub-tooth portion is less than or equal to 0.15.

In this technical scheme, the absolute value of the difference between the width of yoke portion and the width of second sub-tooth portion is first numerical value, the ratio of first numerical value and the width of second sub-tooth portion is less than or equal to 0.15, that is to say, the width of yoke portion is decided through the width of second sub-tooth portion, through setting the ratio of first numerical value and the width of second sub-tooth portion to be less than or equal to 0.15, can make the width of yoke portion less, so, when carrying out the winding to yoke portion, make the quantity of winding increase, and then reduce the electric current of motor, make the power increase of motor, promote the torque efficiency of motor.

In a technical scheme of the utility model, further, the width more than or equal to 8.2 millimeters, less than or equal to 10 millimeters of tooth root.

In the technical scheme, the width of the tooth root is set between 8.2mm and 10mm, so that the torque efficiency of the motor can be maximized. Particularly, if the width of tooth root is less than when 8.2 millimeters, winding current, the iron loss of its tooth root can increase, and the increase of electric current can lead to the excitation grow, and the motor can generate heat seriously when the operation, is unfavorable for the steady operation of motor, can reduce the life of motor when the motor is operated for a long time. If the width of the tooth root is larger than 10mm, although the winding current and the iron loss of the tooth root are reduced, the power of the motor is correspondingly reduced, and the torque of the motor is influenced. Therefore, in order to balance the torque and the heating condition of the motor, the width of the tooth root is set to be more than or equal to 8.2 millimeters and less than or equal to 10 millimeters, so that the comprehensive performance of the motor is ensured, and the torque efficiency of the motor is ensured.

The utility model discloses the second aspect provides a stator, including stator core, stator core includes the stator towards the piece in the aforesaid first aspect arbitrary technical scheme, therefore has whole beneficial effect of stator towards the piece in the aforesaid first aspect, for this reason does not discuss in detail.

In one embodiment of the present invention, further, the first winding is wound around the tooth root; and the second winding is wound on the straight tooth and two second tooth parts on two sides of the straight tooth.

In this solution, the stator core group has a first winding and a second winding. The first winding is located at the tooth root, and the first winding is wound on the tooth root. The second winding is positioned on the straight tooth and the second tooth part, and the second winding is wound on the straight tooth and the second tooth parts positioned on two sides of the straight tooth. So, through first winding and second winding respectively to the coiling of tooth root and straight-tooth and second tooth portion, formed stator core group structure, make the stator can produce rotating electromagnetic field for the rotor can produce induced-current through induction field, and then the electromagnetic field through stator core rotates, thereby makes the motor normal operating.

A third aspect of the present invention provides an electrical machine comprising a stator as in the second aspect described above, thereby having all the benefits of a stator as in the second aspect described above, which will not be discussed in detail for this purpose.

In one technical solution of the present invention, further, the rotor is matched with the stator; the distance between the second sub-tooth part of the stator punching sheet and the straight teeth is a first distance, the product of the first distance and the shaft diameter of the rotor is a first product, and the ratio of the first product to the outer diameter of the stator is larger than 0.078 and smaller than 0.2745.

In this technical scheme, the motor still includes the rotor, and the rotor can use with the stator cooperation for the rotor can rotate for the rotor, and then realizes the power source of motor. The distance between the second sub-tooth part of the stator punching sheet and the straight tooth is a first distance, the product of the first distance and the shaft diameter of the rotor is a first product, and the ratio of the first product to the outer diameter of the stator is larger than 0.078 and smaller than 0.2745. That is to say, through the determination of above-mentioned first product, and then can confirm the diameter size of stator, set up the ratio of first product and the external diameter of stator to be greater than 0.078 and be less than 0.2745 for the diameter size of stator is in better size range all the time, avoids the too big or undersize influence of stator diameter to the influence of motor start-up characteristic and winding copper consumption, guarantees the running performance of motor.

The utility model discloses an among the technical scheme, further, the distance between sub-tooth of second portion and the first tooth portion is the second distance, and the product of second distance and the axle diameter of rotor is the second product, and the ratio of the external diameter of second product and stator is greater than 0.078, and is less than 0.2745.

In the technical scheme, the distance between the second sub-tooth part and the first tooth part of the stator punching sheet is a second distance, the product of the second distance and the shaft diameter of the rotor is a second product, and the ratio of the second product to the outer diameter of the stator is larger than 0.078 and smaller than 0.2745. That is to say, through the determination of above-mentioned second product, and then can confirm the diameter size of stator, set up the ratio of second product and the external diameter of stator to be greater than 0.078 and be less than 0.2745 for the diameter size of stator is in better size range all the time, avoids the too big or undersize influence of stator diameter to the influence of motor start-up characteristic and winding copper consumption, guarantees the running performance of motor.

A fourth aspect of the present invention provides an electrical appliance comprising a motor as in the third aspect described above, thus having all the benefits of a motor as in the third aspect described above, which will not be discussed in detail for this purpose.

In a technical solution of the present invention, further, the electric appliance includes a fan, an air conditioner, a refrigerator or a washing machine.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows one of the schematic structural diagrams of a stator lamination and a rotor in an embodiment according to the present invention;

fig. 2 shows a schematic structural diagram of a stator lamination in an embodiment according to the present invention;

fig. 3 shows a second schematic structural diagram of a stator lamination and a rotor according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 3 is:

100 stator laminations, 110 yoke portions, 120 spur teeth, 130 split teeth, 132 tooth roots, 134 first tooth, 136 second tooth, 138 first sub-tooth, 140 second sub-tooth, 150 rotors, 160 first windings, 170 second windings.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

A stator lamination 100, a stator, an electric machine, and an electric appliance provided according to some embodiments of the present invention are described below with reference to fig. 1 to 3.

As shown in fig. 1, a first aspect of the present embodiment provides a stator punching sheet 100, including: yoke 110, yoke 110 being annular; spur 120, spur 120 being connected to yoke 110; the split teeth 130, the straight teeth 120 and the split teeth 130 are juxtaposed in a circumferential direction of the yoke 110, the split teeth 130 include a tooth root 132, a first tooth portion 134 and a second tooth portion 136, the tooth root 132 is connected to the yoke 110, the first tooth portion 134 and the second tooth portion 136 are both connected to the tooth root 132, and the second tooth portion 136 is located on both sides of the first tooth portion 134.

In this embodiment, the stator lamination 100 includes a yoke portion 110, a spur 120, and split teeth 130. The yoke 110 is annular, and the straight teeth 120 and the split teeth 130 are connected to the annular yoke 110 and arranged in parallel along the circumferential direction of the yoke 110, so that the straight teeth 120 and the split teeth 130 ensure that the relative positions of the straight teeth 120 and the split teeth 130 are fixed through the yoke 110.

Further, split tooth 130 includes a root 132, a first tooth 134, and a second tooth 136. Wherein, the tooth root 132 is connected with yoke 110, and first tooth 134 and second tooth 136 are connected with tooth root 132, and also first tooth 134 second tooth 136 passes through tooth root 132 to be fixed on yoke 110, and then forms the structure of stator punching 100 with straight tooth 120.

Furthermore, according to the specific structure of the stator punching sheet 100, the convenience of the stator punching sheet 100 during winding can be improved when the stator punching sheet is wound, so that the efficient winding efficiency can be ensured no matter manual winding or automatic winding is performed, and the manufacturing speed of the motor is facilitated.

The utility model discloses a to the concrete structure setting of straight-tooth 120 and split teeth 130 to set up straight-tooth 120 and split teeth 130 along stator yoke portion 110 circumference in turn, so, make when carrying out the winding to stator punching 100, can conveniently carry out the winding to straight-tooth 120 and split teeth 130, coiling efficiency when being favorable to the winding has improved the manufacturing speed of motor.

The tooth root 132, yoke 110 and spur 120 enclose a first winding slot and the first and second teeth 134, 136 enclose a second winding slot.

The present embodiment provides a stator punching sheet 100, and in addition to the technical features of the above embodiments, the present embodiment further includes the following technical features.

The number of the second teeth 136 is at least two, the second teeth 136 includes a first sub-tooth 138 and a second sub-tooth 140; the first sub-toothing 138 is connected to the tooth root 132 and extends towards the spur 120; the second sub-tooth 140 is connected to the first sub-tooth 138 and extends radially toward the center of the stator lamination 100.

In this embodiment, at least two second teeth 136 are located at two sides of the first teeth 134, that is, the second teeth 136 and the first teeth 134 are staggered and juxtaposed. The second tooth 136 includes a first sub-tooth 138 and a second sub-tooth 140, wherein one end of the first sub-tooth 138 is connected to the tooth root 132, and the other end extends in the direction of the straight tooth 120, and the second sub-tooth 140 is connected to the first sub-tooth 138 and extends in the radial direction towards the center of the stator lamination 100, so that the split teeth 130 are formed in a shape similar to a "mountain", forming the structure of the second tooth 136, and are further arranged at the yoke 110 alternately with the straight tooth 120, forming the stator lamination 100.

The present embodiment provides a stator punching sheet 100, and in addition to the technical features of the above embodiments, the present embodiment further includes the following technical features.

As shown in fig. 1 and 2, the width a1 of the root 132 is greater than the width of the second tooth 136.

In this embodiment, the width a1 of root 132 is greater than the width of second tooth 136. It can be understood that when the width a1 of the tooth root 132 is relatively wide, the windings accommodated on the tooth root 132 are relatively reduced, and the reduction of the windings can reduce the current of the windings, so that the power of the motor is correspondingly improved, the torque efficiency product of the motor is in a larger value, and the comprehensive performance of the motor is ensured.

Further, because at least two second tooth portions 136 all are connected with tooth root 132, lie in the both sides of tooth root 132 promptly, consequently set up the width a1 of tooth root 132 and can guarantee to provide effective support for at least two second tooth portions 136 for the motor is when the operation, and the difficult cracked condition that takes place of tooth root 132 improves the life of tooth root 132, guarantees the performance of motor.

The present embodiment provides a stator punching sheet 100, and in addition to the technical features of the above embodiments, the present embodiment further includes the following technical features.

As shown in fig. 1 and 2, the width a1 of the tooth root 132 is greater than the width b1 of the first sub-tooth 138, and the width a1 of the tooth root 132 is greater than the width c1 of the second sub-tooth 140.

In this exemplary embodiment, the width a1 of the tooth root 132 is greater than the width b1 of the first sub-tooth 138 and the width c1 of the second sub-tooth 140. As can be appreciated, since the second sub-tooth portion 140 is connected to the first sub-tooth portion 138 and the first sub-tooth portion 138 is connected to the connecting portion, the width a1 of the tooth root 132 is set to be greater than the width b1 of the first sub-tooth portion 138 and the width c1 of the second sub-tooth portion 140, so that the tooth root 132 can provide stable support for the first sub-tooth portion 138 and the second sub-tooth portion 140, prevent the tooth root 132 from being broken when the motor is operated, and improve the strength of the tooth root 132.

Further, set up the width a1 of root 132 the broad, can make the winding of root 132 reduce, that is the number of turns of wire winding on the root 132 reduces, so, root 132 winding current is less relatively, and the magnetic resistance also can correspondingly reduce, but the power of motor improves, has promoted the torque efficiency of motor, guarantees the comprehensive properties of motor.

The present embodiment provides a stator punching sheet 100, and in addition to the technical features of the above embodiments, the present embodiment further includes the following technical features.

As shown in fig. 1 and 2, the width b1 of the first sub-tooth 138 is equal to or greater than the width c1 of the second sub-tooth 140.

In this embodiment, the width b1 of the first sub-tooth portion 138 is greater than or equal to the width c1 of the second sub-tooth portion 140, and since the second sub-tooth portion 140 is connected to the first sub-tooth portion 138, and the width c1 of the second sub-tooth portion 140 is set to be greater than or equal to the width c1 of the second sub-tooth portion 140, it can be ensured that the first sub-tooth portion 138 provides stable support for the second sub-tooth portion 140. Specifically, when the width c1 of the second sub-tooth portion 140 is equal to the width of the first sub-tooth portion 138, the first sub-tooth portion 138 is not easily broken when supporting the second sub-tooth portion 140, and the widths of the first sub-tooth portion 138 and the second sub-tooth portion 140 are equal to each other, so that the number of windings of the first sub-tooth portion 138 and the number of windings of the second sub-tooth portion 140 are the same, and further, the current and the magnetic resistance flowing through the first sub-tooth portion 138 and the second sub-tooth portion 140 are the same, and the overall performance of the motor is improved. When the width c1 of the second sub-tooth portion 140 is smaller than the width b1 of the first sub-tooth portion 138, the first sub-tooth portion 138 can further provide support for the second sub-tooth portion 140 in the operation process of the motor, so that the first sub-tooth portion 138 is not prone to breaking, and the stability of the motor in operation is ensured.

Specifically, a1=8.2mm, b1=5mm, c1=4mm, and a1> b1 ≧ c1 is satisfied.

The present embodiment provides a stator punching sheet 100, and in addition to the technical features of the above embodiments, the present embodiment further includes the following technical features.

As shown in fig. 1 and 2, the sum of twice the width c1 of the second sub-tooth 140 and the width d1 of the first tooth 134 is greater than the width a1 of the tooth root 132.

In this embodiment, the width d1 of the first tooth 134 and the width c1 of the second sub-tooth 140 define an upper limit of the width a1 of the tooth root 132, and in particular, the sum of twice the width c1 of the second sub-tooth 140 and the width d1 of the first tooth 134 is greater than the width a1 of the tooth root 132, so that the width a1 of the tooth root 132 is limited and the width a1 of the tooth root 132 is prevented from being too large. That is, the width a1 of the tooth root 132 is related to the width d1 of the first tooth 134 and the width c1 of the second sub-tooth 140, so that the structural rationality of the stator punching sheet 100 is ensured, and the overall performance of the motor is improved. In addition, the upper limit of the width a1 of the tooth root 132 is limited by the width d1 of the first tooth part 134 and the width c1 of the second sub-tooth part 140, so that the number of windings on the tooth root 132 is not too low or too high, the winding current is always in a preset range through the tooth root 132, and the torque efficiency and the performance of the motor during operation are ensured.

Further, by limiting the upper limit of the width a1 of the tooth root 132, the situation that the distance between the second tooth part 136 and the straight tooth 120 on the tooth root 132 is too short can be avoided, so that the peak value of the magnetic density, the output torque and the like are influenced, the overall performance of the motor is ensured, and the stability of the motor during operation is improved.

Specifically, a1< (2 × c1+ d 1), where d1=3.14mm.

The present embodiment provides a stator punching sheet 100, and in addition to the technical features of the above embodiments, the present embodiment further includes the following technical features.

As shown in fig. 1 and 2, an angle α between the first sub-tooth 138 and the first tooth 134 is 90 degrees or less.

In this embodiment, the angle α between the first sub-tooth 138 and the first tooth 134 is equal to or smaller than 90 °. It can be understood that when the included angle α between the first sub-tooth 138 and the first tooth 134 is set to be 90 ° or less, convenience in winding is improved when the first sub-tooth 138 and the first tooth 134 are wound, and similarly, when the motor needs to be repaired and disassembled, the coil can be easily disassembled from the first sub-tooth 138 and the first tooth 134. By setting the angle α between the first sub-tooth 138 and the first tooth 134 to be equal to or smaller than 90 °, the efficiency in winding or unpacking the first sub-tooth 138 and the first tooth 134 can be improved.

The present embodiment provides a stator punching sheet 100, and in addition to the technical features of the above embodiments, the present embodiment further includes the following technical features.

As shown in fig. 1 and 2, the absolute value of the difference between the width h1 of the yoke 110 and the width c1 of the second sub-tooth 140 is a first value, and the ratio of the first value to the width c1 of the second sub-tooth 140 is 0.15 or less.

In this embodiment, the absolute value of the difference between the width h1 of the yoke 110 and the width c1 of the second sub-tooth 140 is a first value, the ratio of the first value to the width c1 of the second sub-tooth 140 is less than or equal to 0.15, that is, the width h1 of the yoke 110 is determined by the width c1 of the second sub-tooth 140, and the ratio of the first value to the width c1 of the second sub-tooth 140 is set to be less than or equal to 0.15, so that the width h1 of the yoke 110 can be smaller, and thus when the yoke 110 is wound, the number of windings is increased, and further the current of the motor is reduced, the power of the motor is increased, and the torque efficiency of the motor is improved.

In an embodiment of the present invention, through theoretical simulation and experimental analysis, the ratio coefficient of the width c1 of the first numerical value and the second sub-tooth 140 is simulated and analyzed, the value of (h 1-c 1)/c 1 is respectively selected to be 0 and 0.15, the influence of the width c1 of the yoke 110 on the performance of the motor is simulated, the simulation result selects the last two decimal points, and 3 times of simulation are performed under the same experimental parameters to obtain the average value, and the experimental data is as shown in the following table 1:

TABLE 1

Where h1 is the width of the yoke portion, and c1 is the width of the second sub-tooth portion.

As can be seen from table 1, when the value of (h 1-c 1)/c 1 is 0 to 0.15, the current, iron loss and copper loss of the main winding of the motor gradually increase, but the torque and efficiency of the motor do not increase but decrease, and the overall performance of the motor reaches the maximum, and if the value of (h 1-c 1)/c 1 is further increased, the torque and efficiency of the motor will continue to decrease.

Therefore, as can be seen from table 1, when the value of (h 1-c 1)/c 1 is in the range of 0 to 0.15, the comprehensive performance of the motor is the best, the data in all aspects are in the most balanced state, and the value of (h 1-c 1)/c 1 is in the range of 0 to 0.15, so that the torque efficiency of the motor can be ensured, the motor is prevented from being incapable of exerting the maximum performance, and the comprehensive performance of the motor is improved.

Specifically, when (h 1-c 1)/c 1=0, i.e., h1= c1, the performance of the motor is further improved, h1= c1=4mm.

The present embodiment provides a stator punching sheet 100, and in addition to the technical features of the above embodiments, the present embodiment further includes the following technical features.

As shown in fig. 1 and 2, the width a1 of the tooth root 132 is equal to or greater than 8.2mm and equal to or less than 10 mm.

In this embodiment, setting the width a1 of the tooth root 132 between 8.2mm and 10mm enables the torque efficiency of the motor to be maximized. Specifically, if the width a1 of the tooth root 132 is less than 8.2mm, the winding current and the iron loss of the tooth root 132 will increase, and the increase of the current will result in the excitation becoming large, and the motor will generate heat seriously during the operation, which is not beneficial to the stable operation of the motor, and will reduce the service life of the motor when the motor is operated for a long time. If the width a1 of the tooth root 132 is greater than 10mm, the winding current and iron loss of the tooth root 132 will be reduced, but the motor power will be reduced accordingly, which will affect the torque of the motor. Therefore, in order to balance the torque and heat generation of the motor, the width a1 of the tooth root 132 is set to be greater than or equal to 8.2mm and less than or equal to 10mm, so that the comprehensive performance of the motor is ensured, and the torque efficiency of the motor is ensured.

The utility model discloses an in an embodiment, through theoretical simulation and experimental analysis, carry out analog analysis to the different width coefficients of tooth root 132, the width a1 of choosing tooth root 132 respectively is 6mm, 8.2mm, 10mm, 13mm, simulates the influence of the width a1 of tooth root 132 to the motor performance, and two after the decimal point are selected to the simulation result to carry out 3 times of simulation under the same experimental parameter and get the average value, the experimental data is as shown in following 2:

TABLE 2

	b1	a1	a1	a1	2×c1+d1
						a1(mm)	5	6	8.2	10	13
Main winding current (A)	1.21	0.66	0.61	0.59	0.56
						Secondary winding current (A)	0.3	0.3	0.3	0.31	0.32
Line current (A)	1.3	0.81	0.77	0.75	0.73
						Iron loss W	6.4	6.73	5.87	5.65	5.4
Rotor aluminum loss W	18.13	17.02	16.75	16.53	12.22
						Input power W	108.5	81.97	80.05	79.78	79.25
Main winding resistance (omega)	29	33.1	38.3	43.5	50.45
						Secondary winding resistance (omega)	158.1	144.6	132.3	124	155.8
Copper consumption (W)	56.75	27.06	26.41	26.98	31.65
						Torque Nm	0.306	0.35	0.349	0.344	0.337
Efficiency%	25.09	38.02	38.74	38.38	37.83

Wherein a1 is the width of the tooth root.

As can be seen from table 2, when the width a1 of the tooth root 132 is 6mm to 10mm, the main winding current, the line current, the iron loss and the copper loss in the motor are gradually reduced, and the torque and the efficiency are correspondingly gradually improved, at which time the comprehensive performance of the motor is maximized. However, when the width a1 of the tooth root 132 is larger than 10mm, although the iron loss of the main winding current in the motor is continuously reduced, the copper loss is increased, the torque and the efficiency begin to be reduced, and the comprehensive performance of the motor begins to be reduced and is in a descending trend. Therefore, it can be seen from the above table 2 that, when the width a1 of the tooth root 132 is between 8.2mm and 10mm, the comprehensive performance of the motor is the best, the data in all aspects are in the most balanced state, the torque efficiency of the motor is ensured, the motor cannot exert the maximum performance, and the comprehensive performance of the motor is improved.

In an embodiment of the present invention, in order to better embody the structural relationship of the stator lamination, as shown in fig. 2, the distance between the first sub-tooth portion 138 and the straight tooth 120 is set to e1, the distance between the tooth tips of the first tooth portion 134 and the second sub-tooth portion 140 is set to f1, the width of the second sub-tooth portion 140 is set to c1, the width of the tooth root 132 is set to a1, the width of the first sub-tooth portion 138 is set to b1, and the width of the yoke portion 110 is set to h1, so that the structure of the stator lamination of the present invention can be clearly understood according to fig. 3.

The second aspect of the present embodiment provides a stator, which includes a stator core, and the stator core includes the stator lamination 100 in any one of the embodiments of the first aspect, so that all the advantages of the stator lamination 100 in the first aspect are achieved, and therefore, the details are not discussed here.

As shown in fig. 1 and 3, the stator core includes: a first winding 160, the first winding 160 being wound around the root 132; and a second winding 170, wherein the second winding 170 is wound around the straight tooth 120 and two second tooth parts 136 at two sides of the straight tooth 120.

In this embodiment, the stator core group has a first winding 160 and a second winding 170. Wherein the first winding 160 is located at the root 132, and the first winding 160 is wound around the root 132. The second winding 170 is located on the straight tooth 120 and the second tooth 136, and the second winding 170 is wound on the straight tooth 120 and the second tooth 136 located on both sides of the straight tooth 120. So, through first winding 160 and second winding 170 respectively to tooth root 132 and the coiling of straight-tooth and second tooth 136, formed stator core group structure, make the stator can produce rotatory electromagnetic field for rotor 150 can be through induction field, produce induced-current, and then the electromagnetic field through stator core rotates, thereby makes the motor normal operating.

A third aspect of the present embodiment provides an electric machine comprising a stator as in any of the embodiments of the second aspect described above, thereby having all the advantages of the stator of the second aspect described above, and will not be discussed in detail here.

As shown in fig. 1 to 3, the stator core includes: a rotor 150, the rotor 150 cooperating with the stator; the distance between the second sub-tooth part 140 of the stator punching sheet 100 and the straight teeth 120 is a first distance e1, the product of the first distance e1 and the shaft diameter ds of the rotor 150 is a first product, and the ratio of the first product to the outer diameter d3 of the stator is greater than 0.078 and less than 0.2745.

In this embodiment, the motor further includes a rotor 150, and the rotor 150 can cooperate with the stator, so that the rotor 150 can rotate relative to the rotor 150, thereby realizing a power source of the motor. The distance between the second sub-tooth part 140 of the stator punching sheet 100 and the straight teeth 120 is a first distance e1, the product of the first distance e1 and the shaft diameter ds of the rotor 150 is a first product, and the ratio of the first product to the outer diameter d3 of the stator is greater than 0.078 and less than 0.2745. That is to say, through the determination of the first product, the diameter size of the stator can be further determined, and the ratio of the first product to the outer diameter d3 of the stator is set to be greater than 0.078 and less than 0.2745, so that the diameter size of the stator is always in a better size range, the influence of the oversize or undersize influence of the diameter of the stator on the starting characteristic of the motor and the copper consumption of the winding is avoided, and the running performance of the motor is ensured.

The utility model discloses an in an embodiment, through theoretical simulation and experimental analysis, carry out the analog analysis to the ratio coefficient of the external diameter d3 of first product and stator, select e1 xds/d 3's value respectively and be 0.059, 0.078, 0.157, 0.235 and 0.314, simulate the influence of stator size to the motor performance, two latter bits of decimal point are selected to the simulation result to carry out 3 times simulation under the same experimental parameter and get the average value, the experimental data is shown in following 3:

TABLE 3

Where e1 is the first distance, ds is the rotor shaft diameter (i.e., the inner circle diameter of the rotor), and d3 is the stator core outer diameter (i.e., the outer circle diameter of the stator core).

As can be seen from table 3, when the values of e1 xds/d 3 are 0.059 and 0.314, the main winding current, the line current, and the copper loss in the motor are all at higher values, but the torque and the efficiency are not at higher values, and at this time, the overall performance of the motor is not at the highest, and the torque and the efficiency are at lower levels, and the maximum performance of the motor is not exerted. When the value of e1 xds/d 3 is greater than 0.078 to 0.235, the values of the main winding current, the line current and the copper loss are respectively reduced in different degrees, and the torque and the efficiency are improved to some extent, so that the comprehensive performance of the motor reaches the highest, the torque and the efficiency of the motor are ensured, and the main winding current, the line current and the copper loss of the motor are reduced. Therefore, it can be seen from table 3 that when the value of e1 × ds/d3 is in the range of 0.078 to 0.235, the overall performance of the motor is the best, the data in all aspects are in the most balanced state, the torque efficiency of the motor is ensured, the motor cannot exert the maximum performance, and the overall performance of the motor is improved.

Further, e1=2.5mm, f1=2.5mm, d3=102mm, ds =8mm, satisfying: 0.0784 yarn woven fabric e1 × ds/d3<0.2745.

Further, according to table 3, the maximum performance of the motor can be exhibited by taking the value of e1 × ds/d3 to be 0.078 to 0.157.

The present embodiment provides a motor, and in addition to the technical features of the above embodiment, the present embodiment further includes the following technical features.

As shown in fig. 1 to 3, a distance f1 between the second sub-tooth portion 140 and the first tooth portion 134 is a second distance, a product of the second distance and a shaft diameter ds of the rotor 150 is a second product, and a ratio of the second product to an outer diameter d3 of the stator is greater than 0.078 and less than 0.2745.

In this embodiment, the distance between the second sub-tooth portion 140 and the first tooth portion 134 of the stator punching sheet 100 is a second distance, the product of the second distance and the shaft diameter ds of the rotor 150 is a second product, and the ratio of the second product to the outer diameter d3 of the stator is greater than 0.078 and less than 0.2745. That is to say, the diameter size of the stator can be further determined by determining the second product, and the ratio of the second product to the outer diameter d3 of the stator is set to be greater than 0.078 and less than 0.2745, so that the diameter size of the stator is always in a better size range, the influence of the oversize or undersize diameter of the stator on the starting characteristic of the motor and the copper consumption of the winding is avoided, and the running performance of the motor is ensured.

Further, e1=2.5mm, f1=2.5mm, d3=102mm, ds =8mm, satisfying: 0.0784 yarn woven fabric f1 × ds/d3<0.2745.

A fourth aspect of the present embodiment provides an electric appliance including the motor according to any one of the embodiments of the third aspect, thereby having all the advantages of the motor according to the third aspect, which will not be discussed in detail herein.

In an embodiment of the present invention, further, the electric appliance includes a fan, an air conditioner, a refrigerator or a washing machine.

In the claims, the specification and the drawings attached to the specification, the term "plurality" means two or more, unless there is an additional definite limitation, the terms "upper", "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings only for the purpose of describing the present invention more conveniently and simplifying the description process, but not for the purpose of indicating or implying that the referred device or element must have the described specific orientation, be constructed and operated in the specific orientation, and thus the description should not be construed as limiting the present invention; the terms "connect," "mount," "secure," and the like are to be construed broadly, and for example, "connect" may refer to a fixed connection between multiple objects, a removable connection between multiple objects, or an integral connection; the multiple objects may be directly connected to each other or indirectly connected to each other through an intermediate. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art from the above data.

In the claims, the specification and drawings of the specification, the description of the term "one embodiment," "some embodiments," "specific embodiments," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In the claims, the description and the drawings of the present application, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (16)

1. A stator punching sheet is characterized by comprising:

a yoke, the yoke being annular;

a spur coupled to the yoke;

the split teeth, the straight-tooth with the split teeth is followed the circumference of yoke portion is juxtaposed, the split teeth includes tooth root, first tooth portion and second tooth portion, the tooth root with the yoke portion is connected, first tooth portion with the second tooth portion all with the tooth root is connected, the second tooth position in first tooth portion is side in the week.

2. The stator lamination as recited in claim 1, wherein the number of the second teeth is at least two, and the second teeth comprise:

a first sub-tooth connected to the tooth root and extending toward the spur;

and the second sub-tooth part is connected with the first sub-tooth part and extends to the center of the stator punching sheet along the radial direction.

3. The stator lamination as recited in claim 1, wherein the width of the tooth root is greater than the width of the second tooth.

4. The stator lamination as recited in claim 2, wherein the width of the tooth root is greater than the width of the first sub-tooth portion, and the width of the tooth root is greater than the width of the second sub-tooth portion.

5. The stator lamination as recited in claim 2, wherein the width of the first sub-tooth portion is greater than or equal to the width of the second sub-tooth portion.

6. The stator lamination as recited in claim 2, wherein the sum of twice the width of the second sub-tooth and the width of the first tooth is greater than the width of the tooth root.

7. The stator punching sheet according to claim 2, wherein an included angle between the first sub-tooth portion and the first tooth portion is smaller than or equal to 90 degrees.

8. The stator lamination as recited in claim 2, wherein an absolute value of a difference between the width of the yoke portion and the width of the second sub-tooth portion is a first value, and a ratio of the first value to the width of the second sub-tooth portion is less than or equal to 0.15.

9. The stator punching sheet according to any one of claims 1 to 8, wherein the width of the tooth root is greater than or equal to 8.2mm and less than or equal to 10 mm.

10. A stator comprising a stator core including a plurality of stator laminations as claimed in any one of claims 1 to 9.

11. The stator of claim 10, further comprising:

the first winding is wound on the tooth root;

and the second winding is wound on the straight tooth and two second tooth parts on two sides of the straight tooth.

12. An electrical machine comprising a stator according to claim 10 or 11.

13. The electric machine of claim 12, further comprising:

a rotor engaged with the stator;

the distance between the second sub-tooth part of the stator punching sheet and the straight teeth is a first distance, the product of the first distance and the shaft diameter of the rotor is a first product, and the ratio of the first product to the outer diameter of the stator is larger than 0.078 and smaller than 0.2745.

14. The electric machine of claim 13, wherein a distance between the second sub-tooth and the first tooth is a second distance, a product of the second distance and a shaft diameter of the rotor is a second product, and a ratio of the second product to an outer diameter of the stator is greater than 0.078 and less than 0.2745.

15. An electrical appliance comprising an electrical machine as claimed in any one of claims 12 to 14.

16. The appliance according to claim 15, characterized in that the appliance comprises a fan, an air conditioner, a refrigerator or a washing machine.

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