CN117477811A - Stator component, motor and compressor - Google Patents
Stator component, motor and compressor Download PDFInfo
- Publication number
- CN117477811A CN117477811A CN202310280543.2A CN202310280543A CN117477811A CN 117477811 A CN117477811 A CN 117477811A CN 202310280543 A CN202310280543 A CN 202310280543A CN 117477811 A CN117477811 A CN 117477811A
- Authority
- CN
- China
- Prior art keywords
- stator
- bracket
- component
- punching sheets
- stator core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004080 punching Methods 0.000 claims abstract description 52
- 238000003475 lamination Methods 0.000 claims description 59
- 239000012212 insulator Substances 0.000 claims description 17
- 238000009413 insulation Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 description 22
- 230000000670 limiting effect Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
- H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/48—Fastening of windings on the stator or rotor structure in slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
- H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Abstract
The invention discloses a stator component, a motor and a compressor. The stator component comprises a stator core and an insulating framework, wherein the stator core comprises a plurality of stator punching sheets which are axially stacked; the insulating framework comprises a support and a fastening structure arranged on the support, the support is arranged on one axial side of the stator punching sheets, and the fastening structure is used for fastening the stator punching sheets to be fixed with the support. According to the technical scheme, the stator component does not need to be provided with a connecting structure such as a welding point or a riveting point and the like on the stator punching sheets to fix the plurality of stator punching sheets, so that eddy current loss of the stator core caused by the welding point or the riveting point is eliminated, and the aim of improving the motor efficiency is fulfilled.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a stator component, a motor and a compressor.
Background
The refrigeration industry has increasingly high demands on energy efficiency, and changes in motor efficiency directly affect changes in compressor efficiency.
The motor is composed of two main parts of a stator and a rotor, a stator core in the stator part is formed by combining a plurality of stator punching sheets, and in the related art, connecting structures such as welding points or riveting points are arranged on the stator punching sheets to fix the plurality of stator punching sheets so as to form a stator core structure, so that larger eddy current loss is generated in the stator core, and the motor efficiency is low.
Disclosure of Invention
The invention mainly aims to provide a stator component which aims to weaken eddy current loss in a stator core and improve motor efficiency.
To achieve the above object, the present invention provides a stator component comprising:
the stator core comprises a plurality of stator punching sheets which are axially stacked; and
the insulation framework comprises a support and a fastening structure arranged on the support, the support is arranged on one axial side of the stator punching sheets, and the fastening structure is used for fastening the stator punching sheets to be fixed with the support.
In one embodiment of the present invention, the fastening structure includes at least two clamping members connected to the support, and the at least two clamping members are disposed at intervals on the outer circumferences of the plurality of stator laminations, so as to clamp and fix the plurality of stator laminations.
In one embodiment of the present invention, the clip includes:
the clamping arm is connected with the bracket at one end, and the other end extends towards one side of the plurality of stator punching sheets, which is away from the bracket, along the axial direction; the clamping arms are propped against the outer side walls of the stator punching sheets; and
the buckling part is convexly arranged on the inner side wall of one end, far away from the bracket, of the clamping arm, and the buckling part abuts against the end face, deviating from the bracket, of the plurality of stator punching sheets so as to clamp the plurality of stator punching sheets between the buckling part and the bracket.
In an embodiment of the invention, a surface of the fastening portion away from the inner sidewall of the clamping arm is provided with a guiding inclined surface.
In one embodiment of the present invention, an included angle θ between the guide inclined surface and the axial direction of the stator core is defined to be equal to or greater than 10 ° and equal to or less than 45 °.
In an embodiment of the present invention, the clamping member further includes a connecting portion connecting the clamping arm and the bracket, where the connecting portion is disposed opposite to the fastening portion and abuts against an end surface of the plurality of stator punching sheets near the bracket.
In an embodiment of the present invention, the connection portion is a plate structure, the clamping arm is a plate structure, and the connection portion is connected to the clamping arm at a right angle.
In an embodiment of the present invention, a surface of the connection portion facing the stator core is flush with a surface of the bracket facing the stator core.
In one embodiment of the present invention, the clamping member is integrally formed with the bracket.
In an embodiment of the present invention, the stator punching sheet is provided with a central hole, the stator core is provided with a plurality of stator slots around the periphery of the central hole, the support is provided with a plurality of axially extending slot insulators, and the slot insulators are correspondingly inserted into the stator slots.
In order to achieve the above object, the present invention also provides an electric machine comprising a rotor member and the above stator member, wherein the rotor member is disposed in a center hole of the stator member.
In an embodiment of the present invention, the number of stator slots of the stator component is Z, and the number of poles of the rotor component is 2p, satisfying Z/2p=3/2 or Z/2p=6/5.
In an embodiment of the present invention, the rated torque of the motor is T, the inner diameter of the stator core is Di, and the torque per unit volume of the rotor component is TPV, which satisfies the following conditions:
5.18×10 -7 ≤T×Di -3 ×TPV -1 ≤1.17×10 -6 ，
5kN·m·m -3 ≤TPV≤45kN·m·m -3 ，
wherein the rated torque T of the motor is in N.m, the internal diameter Di of the stator core is in mm, and the unit volume torque TPV of the rotor component is in kN.m.m -3 。
In order to achieve the above object, the present invention also provides a compressor, including the above motor.
According to the technical scheme, in the stator component, the plurality of stator punching sheets are axially stacked, the insulating framework comprises the support arranged on one axial side of the plurality of stator punching sheets and the fastening structure connected with the support, the fastening structure can fasten and fix the plurality of stator punching sheets to the support, and the stator punching sheets are not required to be fixed mutually by arranging connecting structures such as welding points or riveting points on the stator punching sheets, so that eddy current loss of a stator core caused by the welding points or the riveting points is eliminated, and the aim of improving motor efficiency is fulfilled.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural diagram of an insulating framework in an embodiment of the present invention;
FIG. 2 is a front view of an insulating framework in an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a schematic view of a stator lamination in accordance with an embodiment of the present invention;
fig. 5 is a schematic diagram of an assembly structure of an insulating framework and a stator core according to an embodiment of the present invention;
fig. 6 is a schematic view showing the structure of an embodiment of the compressor of the present invention.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
Meanwhile, the meaning of "and/or" and/or "appearing throughout the text is to include three schemes, taking" a and/or B "as an example, including a scheme, or B scheme, or a scheme that a and B satisfy simultaneously.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The present invention proposes a stator component, which aims to weaken eddy current loss in a stator core 100 to improve the working efficiency of a motor.
In the embodiment of the present invention, as shown in fig. 1 to 5, the stator part includes a stator core 100 and an insulating frame 200.
The stator core 100 includes a plurality of stator laminations 110 arranged in axial stacks;
the insulating frame 200 includes a bracket 210 and a fastening structure 300 disposed on the bracket 210, the bracket 210 is disposed on one axial side of the plurality of stator laminations 110, and the fastening structure 300 is used for fastening the plurality of stator laminations 110 to the bracket 210.
In this embodiment, the stator core 100 is formed by stacking a plurality of stator laminations 110 axially, the insulating framework 200 includes a bracket 210 disposed on one axial side of the plurality of stator laminations 110, a fastening structure 300 is disposed on the bracket 210, and the fastening structure 300 can fasten and fix the plurality of stator laminations 110 to the bracket 210, so as to achieve the fixing function of the plurality of stator laminations 110, and thus, there is no need to provide a connection structure such as a welding point or a riveting point on the stator laminations 110 to achieve the fixing of the plurality of stator laminations 110. It can be understood that the stator punching sheet 110 is of a metal structure, and the connection structures such as the welding points or the riveting points arranged on the stator punching sheet 110 are also of a metal structure, so that when the stator punching sheet is applied to a motor, eddy current loss can be caused by the metal connection structure among a plurality of stator punching sheets 110, and the plurality of stator punching sheets 110 in the embodiment are directly fixed to the bracket 210 through the fastening structure 300 on the insulating framework 200, so that the arrangement of the welding points or the riveting points is eliminated, the eddy current loss caused by the welding points or the riveting points is eliminated, and the efficiency of the motor is improved.
The fastening structure 300 fastens the plurality of stator laminations 110 to be fixed to the bracket 210, and it can be understood that the fastening structure 300 lifts or pushes the plurality of stator laminations 110 toward the bracket 210 from one axial side of the plurality of stator laminations 110, so that the plurality of stator laminations 110 are clamped and fixed between the lifting force or pushing force of the fastening structure 300 and the holding force of the bracket 210, thereby not only realizing the fixation of the plurality of stator laminations 110, but also realizing the function of fixing the plurality of stator laminations 110 to the insulating frame 200, omitting the assembly step of assembling the plurality of stator laminations 110 into the stator core 100 in advance, and further achieving the effect of improving the assembly efficiency in addition to reducing the eddy current loss of the motor.
In practical applications, the specific structure of the fastening structure 300 may be determined according to practical situations, for example, the fastening structure 300 may be formed by combining a plurality of clamping members, or may be a single lifting structure or a pushing structure. It will be appreciated that the fastening structure 300 is attached to the support 210 with the support 210 being located on one axial side of the plurality of stator laminations 110, and that the fastening structure 300 may be configured to extend from the support 210 toward the other axial side of the plurality of stator laminations 110 in order to apply a force to the end faces of the plurality of stator laminations 110. Alternatively, the fastening structure 300 is made of an insulating material, and does not affect the magnetic field inside the motor, thereby not causing eddy current loss.
In practical application, the fastening structure 300 and the bracket 210 may be an integral structure or a split structure, and when the fastening structure 300 and the bracket 210 are integrally formed or 3D printed and formed through a mold, so that assembling steps are saved, and production efficiency is improved. In the case of a split structure, the fastening structure 300 and the bracket 210 are assembled together after being separately molded, thereby facilitating subsequent maintenance and replacement.
In the stator component of the present invention, a plurality of stator punching sheets 110 are axially stacked, the insulating framework 200 includes a bracket 210 disposed on one axial side of the plurality of stator punching sheets 110, and a fastening structure 300 connected to the bracket 210, where the fastening structure 300 can fasten and fix the plurality of stator punching sheets 110 to the bracket 210, and there is no need to provide a connection structure such as a welding point or a riveting point on the stator punching sheets 110 to fix the plurality of stator punching sheets 110 to each other, thereby eliminating eddy current loss of the stator core 100 due to the welding point or the riveting point, and achieving the purpose of improving motor efficiency.
In one embodiment of the present invention, referring to fig. 1 to 3 and 5, the fastening structure 300 includes at least two clamping members 310 connected to the bracket 210, and the at least two clamping members 310 are spaced apart at the outer circumferences of the plurality of stator laminations 110 for clamping the plurality of stator laminations 110.
The present embodiment is exemplified with respect to the structure of the fastening structure 300, and the fastening structure 300 includes at least two clamping members 310, it can be understood that the clamping members 310 perform a clamping function on the plurality of stator laminations 110, and the clamping jaw structure formed on the outer periphery of the plurality of stator laminations 110 by distributing the at least two clamping members 310 at intervals on the outer periphery of the plurality of stator laminations 110, so that the plurality of stator laminations 110 can be clamped and fixed to ensure the fastening effect.
It will be appreciated that the number of the clamping members 310 may be two, three, four, etc., and in the case of two clamping members 310, two clamping members 310 are disposed at opposite sides of the bracket 210, a clamping space is formed between the two clamping members 310, and the plurality of stator laminations 110 are clamped between the two clamping members 310 and fastened to the bracket 210. In the case of three or more clamping members 310, the plurality of clamping members 310 can be uniformly arranged around the outer circumference of the support 210 at intervals, so that the plurality of clamping members 310 are uniformly distributed along the outer circumference of the plurality of stator punching sheets 110 at intervals, so that the plurality of stator punching sheets 110 are clamped in the cavity between the plurality of clamping members 310 and the support 210, in this way, the plurality of clamping members 310 are uniformly distributed along the circumferential direction, so that the stress of the plurality of stator punching sheets 110 is more uniform, and the fixing effect is more stable and reliable. In practical applications, the distribution of the clamping members 310 may also depend on the shape structure of the actual stator lamination 110, such as when the shape structure of the stator lamination 110 is a circular structure, the plurality of clamping members 310 may be distributed around the circular peripheral array of the stator lamination 110; when the outer structure of the stator lamination 110 is rectangular or square, the plurality of clamping members 310 may be distributed at each side of the stator lamination 110, so as to ensure the matching area of the clamping members 310 and the stator lamination 110, and achieve a better fixing effect. In some other embodiments, the fastening structure 300 may also include only one clip 310, in which case the structure of the clip 310 may be adapted to the shape of the outer surface of the stator core 100 to have a sufficient mating area to secure the fixing effect.
In an embodiment of the present invention, referring to fig. 1 to 3 and 5, the clamping member 310 includes a clamping arm 311 and a fastening portion 312, one end of the clamping arm 311 is connected to the bracket 210, and the other end extends toward a side of the plurality of stator laminations 110 facing away from the bracket 210 in an axial direction; the clamping arms 311 are abutted against the outer side walls of the plurality of stator punching sheets 110; the fastening portion 312 is protruding on an inner side wall of the clamping arm 311 away from one end of the bracket 210, and the fastening portion 312 abuts against an end surface of the plurality of stator punching sheets 110 away from the bracket 210, so as to clamp the plurality of stator punching sheets 110 between the fastening portion 312 and the bracket 210.
In this embodiment, for the structure of the clamping member 310, the clamping member 310 includes a clamping arm 311 and a fastening portion 312 connected to the clamping arm 311, where the clamping arm 311 performs a function of abutting against the outer peripheral side walls of the plurality of stator laminations 110, and the fastening portion 312 performs a function of abutting against the axial end surfaces of the plurality of stator laminations 110, thereby achieving a function of fixing both the radial direction and the axial direction of the plurality of stator laminations 110, and achieving a purpose of fastening the plurality of stator laminations 110.
Based on the foregoing embodiment, the fastening structure 300 includes at least two clamping members 310, it can be appreciated that the at least two clamping arms 311 abut against the peripheral sidewalls of the plurality of stator laminations 110, so that the plurality of stator laminations 110 are clamped between the at least two clamping arms 311 to ensure a radial limiting effect on the plurality of stator laminations 110. Meanwhile, the at least two fastening portions 312 abut against the axial end surface of the stator core 100, so that the plurality of stator laminations 110 are clamped between the at least two fastening portions 312 and the bracket 210, so as to ensure a limiting effect on the plurality of stator laminations 110 in the axial direction. Optionally, at least two clamping arms 311 are evenly spaced along the outer circumference of stator plate 110, and at least two fastening portions 312 are distributed around the axial array of stator plate 110.
In practical application, the shape structure of the clamping arm 311 may be a plate structure, a strip structure or other special structures, etc., and the shape structure of the clamping arm 311 may be determined according to the shape structure of the practical stator core 100, so as to ensure the matching area of the clamping arm 311 and the outer side walls of the stator punching sheets 110, and achieve a better fixing effect. When the outer shape of the stator lamination 110 is rectangular or square, the clamping arms 311 may be configured as a straight plate or strip, so that the inner side wall of the clamping arms 311 is abutted against the outer side wall of the stator lamination 110. When the appearance structure of the stator punching sheet 110 is a circular structure, the clamping arms 311 can be arranged to be of an arc plate-shaped structure or a strip-shaped structure, so that the shape of the inner side wall surface of the clamping arms 311 is matched with the shape of the outer side wall surface of the stator punching sheet 110, the two are guaranteed to be abutted against each other, and a better clamping and matching effect is achieved.
In this embodiment, considering the clamping effect of the clamping arm 311 and the stator core 100, the clamping arm 311 may be selected to be a plate structure, which increases the connection area between the clamping arm 311 and the bracket 210, and increases the matching area between the clamping arm 311 and the outer sidewall of the stator core 100, thereby improving the reliability of the overall structure. Alternatively, the clamping arm 311 is integrally formed with the bracket 210.
The fastening portion 312 is convexly disposed on an inner sidewall of the clamping arm 311 at an end far away from the bracket 210, and it can be appreciated that the fastening portion 312 is disposed opposite to the bracket 210, and a clamping space for clamping the plurality of stator punching sheets 110 is formed therebetween. Optionally, the fastening portion 312 is a bump structure on the inner side wall of the clamping arm 311 near the end, so as to fasten the end of the stator core 100, and ensure the fixing effect of the stator core 100. In practical application, the fastening portion 312 and the clamping arm 311 are integrally formed, and may be integrally formed by a mold or 3D printed. In some embodiments, the shape structure of the fastening portion 312 may be adapted to the shape structure of the clamping arm 311, for example, when the clamping arm 311 is in a plate structure in the foregoing embodiments, the fastening portion 312 may be configured as a strip-shaped bump structure, at this time, the fastening portion 312 extends along the width direction of the clamping arm 311, and the extending length of the fastening portion 312 is consistent with the width length of the clamping arm 311, so that the fastening mating area of the fastening portion 312 and the stator core 100 is increased, and a better fixing effect is ensured. Or, when the clamping arm 311 is in an arc plate structure, the fastening portion 312 may be configured as an arc strip structure to be matched with the arc of the clamping arm 311, and meanwhile, can be matched with the shape of the stator core 100 with a circular shape, so as to ensure the fixing effect.
Further, the surface of the fastening portion 312 away from the inner sidewall of the clamping arm 311 is provided with a guiding inclined surface 3121. It can be appreciated that, in actual assembly, the plurality of stator laminations 110 are clamped between the at least two clamping arms 311 after passing through the fastening portion 312 along the axial direction until the plurality of stator laminations 110 move between the fastening portion 312 and the bracket 210, so as to fix the plurality of stator laminations 110. That is, when the outer side walls of the stator punching sheets 110 pass through the fastening portion 312, the clamping arms 311 are required to be pushed open, in this embodiment, the guiding inclined surfaces 3121 are provided on the inner side walls of the fastening portion 312, which plays a role in guiding the assembly of the stator punching sheets 110, reduces the installation resistance, and improves the assembly efficiency.
In one embodiment, the angle θ between the guide inclined surface 3121 and the axial direction of the stator core 100 is defined to satisfy 10+.θ+.45 °. It can be understood that the inclination angle of the guiding inclined surface 3121 cannot be too large or too small, and when the included angle θ of the guiding inclined surface 3121 with the axial direction of the stator core 100 is too large (the inclination angle is too large), the guiding inclined surface 3121 does not play a guiding effect on the stator core 100; when the included angle θ between the guide inclined surface 3121 and the axial direction of the stator core 100 is too small (the inclination angle is too small), the protruding length of the fastening portion 312 relative to the inner side wall of the clamping arm 311 is too small, that is, the contact area of the fastening portion 312 to the stator core 100 is too small, so that the fastening effect to the stator core 100 cannot be achieved. Based on this, the included angle θ between the guide inclined surface 3121 and the axial direction of the stator core 100 is set between 10 ° and 45 ° in the present embodiment, so that the fastening effect on the stator core 100 can be ensured, and the guiding effect in the assembly process of the stator core 100 can be also achieved. Alternatively, the angle θ of the guide inclined surface 3121 with respect to the axial direction of the stator core 100 may be selected to be 10 °, 12 °, 15 °, 18 °, 20 °, 25 °, 27 °, 30 °, 35 °, 40 °, 43 °, 45 °, or the like.
In an embodiment of the present invention, referring to fig. 1 to 3 and 5, the clamping member 310 further includes a connection portion 313 connecting the clamping arm 311 and the bracket 210, where the connection portion 313 is disposed opposite to the fastening portion 312 and abuts against an end surface of the plurality of stator laminations 110 near the bracket 210.
In this embodiment, the clamping member 310 further includes a connection portion 313 connected between the clamping arm 311 and the bracket 210, and it is understood that the bracket 210 is connected to the middle region of the stator core 100, and the connection portion 313 plays a role of supporting and connecting the clamping arm 311, so that the clamping arm 311 can abut against the outer sidewall of the stator core 100. The connecting portion 313 is disposed opposite to the fastening portion 312, so that when the plurality of stator laminations 110 are assembled with the insulating framework 200, the plurality of stator laminations 110 can be clamped between the fastening portion 312 and the connecting portion 313, the connecting portion 313 abuts against an axial end face of the stator core 100, which is close to the bracket 210, so that a matching area of the fastening structure 300 and the stator core 100 is increased, and a fixing effect of the plurality of stator laminations 110 is further improved.
In practical applications, the shape and structure of the connection portion 313 may be determined according to practical situations, for example, the connection portion 313 may be a plate-shaped structure, a strip-shaped structure, or other special-shaped structures. The connection portion 313 can be abutted against the end face of the stator core 100, and then the connection portion 313 can be set to be in a plate structure, so that the plate surface of the connection portion 313 is abutted against the end face of the stator core 100, the matching area of the connection portion 313 and the end face of the stator core 100 is increased, and a better fixing effect is ensured.
Further, the connection portion 313 is a plate structure, the clamping arm 311 is a plate structure, and the connection portion 313 is connected to the clamping arm 311 at right angles. In this embodiment, the connection portion 313 is configured as a plate structure, so as to increase the supporting area between the fastening structure 300 and the end face of the stator core 100, and the clamping arm 311 is configured as a plate structure, so as to increase the supporting area between the clamping arm 311 and the outer side wall of the stator core 100, thereby further improving the fixing effect of the stator core 100. In addition, the connecting portion 313 is connected with the clamping arm 311 at a right angle, so that the structural strength of the clamping member 310 is higher, and the connecting area of the clamping member 310 and the clamping arm is increased due to the fact that the clamping member 310 and the clamping arm are in a plate body structure, and the structural reliability of the clamping member 310 is further improved. Alternatively, the connection portion 313 and the clamping arm 311 are integrally formed, and may be integrally formed by a mold or 3D printing.
In an embodiment, the surface of the connection portion 313 facing the stator core 100 is flush with the surface of the bracket 210 facing the stator core 100.
It can be understood that one end of the connecting portion 313 is connected with the bracket 210, the other end is connected with the clamping arm 311, the connecting portion 313 is opposite to the fastening portion 312, the stator core 100 is clamped between the connecting portion 313 and the fastening portion 312, and the connecting portion 313 and the bracket 210 can simultaneously abut against the end face of the stator core 100 by flush setting the surface of the connecting portion 313 facing the stator core 100 and the surface of the bracket 210 facing the stator core 100, that is, the matching area of the insulating framework 200 and the end face of the stator core 100 is increased, so that the fixing effect of the stator core 100 is better.
Alternatively, the connection portion 313 is integrally formed with the bracket 210.
In an embodiment of the present invention, referring to fig. 1 to 5, a stator core 100 has a central hole 101, a plurality of stator slots 113 are provided around the periphery of the central hole 101 in the stator core 100, a plurality of axially extending slot insulators 220 are provided in a bracket 210, and the plurality of slot insulators 220 are inserted into the plurality of stator slots 113 correspondingly.
The stator punching 110 includes a stator yoke 111 and a plurality of stator teeth 112, the stator yoke 111 is provided with a central hole 101, the central hole 101 is used for mounting a rotor component, the plurality of stator teeth 112 are arranged around the periphery of the central hole 101, a stator slot 113 is defined between two adjacent stator teeth 112, a slot insulator 220 of an insulating framework 200 is mounted in the stator slot 113, a winding coil is isolated from a stator core 100, short circuit or electric shock and other phenomena between the winding coil and the stator core 100 are prevented, insulating paper is not required to be mounted, the manufacturing process is simplified, and on the other hand, the stator core 100 is fixed together by matching with a fastening structure 300, so that the structural strength of the stator core 100 is ensured.
It will be appreciated that the slot insulator 220 serves as a barrier to the stator core 100 and the winding coil, and that the slot insulator 220 extends from one side of the stator core 100 in the axial direction to the other side, i.e., the slot insulator 220 covers the entire stator slot 113 in the axial direction, in order to secure the insulating effect. In some embodiments, the insulating frame 200 may be provided with brackets 210 on both sides of the stator core 100 in the axial direction, and slot insulators 220 may be provided on the brackets 210 on both sides, in this manner, in order to ensure an insulating effect, the slot insulators 220 on the two brackets 210 extend into both ends of the stator slot 113 respectively and are butted in the stator slot 113, so as to avoid an electric shock phenomenon caused by air isolation, in addition, the extending length of the slot insulators 220 on the single bracket 210 may be reduced, so as to ensure structural strength, and meanwhile, the slot insulators are inserted from both sides of the stator slot 113, thereby accelerating installation efficiency.
In an embodiment of the present invention, the support 210 is disposed in an annular shape, and the plurality of slot insulators 220 are disposed on the support 210 at intervals along the circumferential direction, and the area where the connection portion 313 is connected to the support 210 covers at least the area where the two slot insulators 220 disposed along the circumferential direction are located.
In this embodiment, the area where the connection portion 313 is connected to the bracket 210 at least covers the area where the two circumferentially arranged slot insulators 220 are located, so that the connection length and the connection area of the connection portion 313 to the bracket 210 are increased, and therefore, the connection structure strength of the connection portion 313 to the bracket 210 can be further improved, and the better fixing effect of the fastening structure 300 to the stator core 100 is ensured.
The invention also provides a motor, which comprises a rotor component and a stator component, wherein the specific structure of the stator component refers to the embodiment, and as the motor adopts all the technical schemes of all the embodiments, the motor has at least all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted herein. Wherein the rotor component is arranged in the central bore 101 of the stator component.
In one embodiment of the present invention, the stator slots 113 of the stator component have a slot number Z and the rotor component have a pole number 2p, satisfying Z/2p=3/2 or Z/2p=6/5. In this embodiment, by adopting the multi-slot structure, the number of slots on the insulating framework is increased, the matching area is increased, the stress is uniform, and the strength of the stator component is increased after the coil is wound. Alternatively, the motor may employ a 12 slot 8 pole configuration, a 12 slot 10 pole configuration, etc.
Optionally, the rotor component may adopt a circular rotor profile to reduce windmilling losses during rotor rotation, further enhancing motor efficiency.
In order to further increase the power demand of the motor, the rated torque of the motor is T, the inner diameter of the central hole 101 of the stator core 100 is Di, and the torque per unit volume of the rotor component is TPV, which satisfies the following conditions:
5.18×10 -7 ≤T×Di -3 ×TPV -1 ≤1.17×10 -6 ，
5kN·m·m -3 ≤TPV≤45kN·m·m -3 ，
wherein the rated torque T of the motor is in N.m, the internal diameter Di of the stator core is in mm, and the unit volume torque TPV of the rotor component is in kN.m.m -3 。
In the embodiment, the motor can meet the power requirement of the compressor by limiting the range of the combination variables of the rated torque T of the motor, the internal diameter Di of the stator body and the unit volume torque TPV of the rotor.
The present invention also proposes a compressor, referring to fig. 6, the compressor includes a motor, and the specific structure of the motor refers to the above embodiment, and since the compressor adopts all the technical solutions of all the above embodiments, at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be described in detail herein.
Alternatively, the compressor includes a stator part, a rotor part 400, a crankshaft 500, a crank case 600, a connecting rod 700, and a piston 800, wherein the rotor part 400 is disposed in a center hole 101 of the stator part, one end of the crankshaft 500 is connected with the rotor part 400, and the other end is connected with the piston 800 through the connecting rod 700 by passing through the crank case 600, so that rotation of the rotor part 400 can drive the crankshaft 500 to rotate to drive the piston 800 to apply work.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (14)
1. A stator component, comprising:
the stator core comprises a plurality of stator punching sheets which are axially stacked; and
the insulation framework comprises a support and a fastening structure arranged on the support, the support is arranged on one axial side of the stator punching sheets, and the fastening structure is used for fastening the stator punching sheets to be fixed with the support.
2. The stator assembly of claim 1 wherein the fastening structure includes at least two clips coupled to the support, the at least two clips being spaced apart from the outer periphery of the plurality of stator laminations for clamping the plurality of stator laminations in place.
3. The stator component of claim 2, wherein the clip comprises:
the clamping arm is connected with the bracket at one end, and the other end extends towards one side of the plurality of stator punching sheets, which is away from the bracket, along the axial direction; the clamping arms are propped against the outer side walls of the stator punching sheets; and
the buckling part is convexly arranged on the inner side wall of one end, far away from the bracket, of the clamping arm, and the buckling part abuts against the end face, deviating from the bracket, of the plurality of stator punching sheets so as to clamp the plurality of stator punching sheets between the buckling part and the bracket.
4. A stator component according to claim 3 wherein the surface of the fastening portion remote from the inner side wall of the clamping arm is provided with a lead-in ramp.
5. The stator component of claim 4, wherein an angle θ between the lead slope and an axial direction of the stator core is defined to be 10 ° or less and θ or less than 45 °.
6. The stator assembly of claim 3 wherein the clip further comprises a connecting portion connecting the clamping arm to the bracket, the connecting portion being disposed opposite the fastening portion and abutting an end surface of the plurality of stator laminations adjacent the bracket.
7. The stator assembly of claim 6 wherein the connection is a plate structure and the clamping arms are plate structures, the connection being connected at right angles to the clamping arms.
8. The stator component of claim 7, wherein a surface of the connection facing the stator core is flush with a surface of the bracket facing the stator core.
9. A stator component according to any one of claims 2 to 8 wherein the clip is of unitary construction with the bracket.
10. A stator component as claimed in any one of claims 1 to 8 wherein the stator laminations are provided with a central aperture, the stator laminations being provided with a plurality of stator slots around the periphery of the central aperture;
the support is provided with a plurality of axially extending slot insulators, and a plurality of slot insulators are correspondingly inserted into a plurality of stator slots.
11. An electric machine comprising a rotor component and a stator component as claimed in any one of claims 1 to 10, the rotor component being disposed within a central bore of the stator component.
12. The electric machine of claim 11, wherein the stator component has a number of stator slots Z and the rotor component has a number of poles 2p, satisfying Z/2p=3/2 or Z/2p=6/5.
13. The electric machine of claim 11, wherein the rated torque of the electric machine is T, the inner diameter of the stator core is Di, and the torque per unit volume of the rotor member is TPV, satisfying:
5.18×10 -7 ≤T×Di -3 ×TPV -1 ≤1.17×10 -6 ，
5kN·m·m -3 ≤TPV≤45kN·m·m -3 ，
wherein the rated torque T of the motor is in N.m, the internal diameter Di of the stator core is in mm, and the unit volume torque TPV of the rotor component is in kN.m.m -3 。
14. A compressor comprising an electric motor as claimed in any one of claims 11 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310280543.2A CN117477811A (en) | 2023-03-17 | 2023-03-17 | Stator component, motor and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310280543.2A CN117477811A (en) | 2023-03-17 | 2023-03-17 | Stator component, motor and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117477811A true CN117477811A (en) | 2024-01-30 |
Family
ID=89633650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310280543.2A Pending CN117477811A (en) | 2023-03-17 | 2023-03-17 | Stator component, motor and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117477811A (en) |
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2023
- 2023-03-17 CN CN202310280543.2A patent/CN117477811A/en active Pending
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