CN110829665A - Stator assembly, motor and pump - Google Patents
Stator assembly, motor and pump Download PDFInfo
- Publication number
- CN110829665A CN110829665A CN201810922913.7A CN201810922913A CN110829665A CN 110829665 A CN110829665 A CN 110829665A CN 201810922913 A CN201810922913 A CN 201810922913A CN 110829665 A CN110829665 A CN 110829665A
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- Prior art keywords
- stator
- sub
- insulating
- winding
- wire passing
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- 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
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- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
- H02K2203/12—Machines characterised by the bobbins for supporting the windings
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a stator assembly, a motor and a pump, wherein the stator assembly comprises: a stator core; the insulating framework is coated outside the stator iron core and comprises a plurality of sub-insulating framework groups which are sequentially arranged along the circumferential direction, each sub-insulating framework group comprises three sub-insulating frameworks which are sequentially arranged along the circumferential direction, each sub-insulating framework is provided with a winding post and a wire passing step, and the heights of the wire passing steps of different sub-insulating frameworks of the same sub-insulating framework group are different; the stator winding is wound on the surface of the insulating framework, the winding posts are used for fixing the wire passing bridges of the stator winding, and the different wire passing steps of the sub-insulating framework in the same sub-insulating framework group are respectively used for supporting the different wire passing bridges. According to the stator assembly, the axial heights corresponding to the wire passing bridges of the stator windings in different phases are different, so that the mutual interference of the wire passing bridges of the stator windings in different phases can be avoided.
Description
Technical Field
The invention belongs to the technical field of motor manufacturing, and particularly relates to a stator assembly, a motor with the stator assembly and a pump with the motor.
Background
The motor is required to be used for providing power in various fields such as industry, household appliances, automobiles and the like, and the motor usually adopts a structure that a stator core is matched with an insulating framework so as to be convenient for wire embedding and wire passing on the stator core. In the related art, the motor comprises a plurality of different-phase wire passing bridges, and when the wire passing bridges are wound, lines are easy to intersect, so that the different-phase wire passing bridges interfere with each other, and current abnormity and accidents are caused in serious cases, so that an improved space exists.
Disclosure of Invention
Therefore, the invention provides a stator assembly, which can wind different phases of wire passing bridges into different heights so as to make the corresponding lines of the respective frameworks clear.
The invention also provides a motor with the stator assembly.
A stator assembly according to an embodiment of the present invention includes: a stator core; the insulating framework is coated outside the stator iron core and comprises a plurality of sub-insulating framework groups which are sequentially arranged along the circumferential direction, each sub-insulating framework group comprises three sub-insulating frameworks which are sequentially arranged along the circumferential direction, each sub-insulating framework is provided with a winding post and a wire passing step, and the heights of the wire passing steps of different sub-insulating frameworks of the same sub-insulating framework group are different; the stator winding is wound on the surface of the insulating framework, the winding posts are used for fixing the wire passing bridges of the stator winding, and the different wire passing steps of the sub-insulating framework in the same sub-insulating framework group are respectively used for supporting the different wire passing bridges.
According to the stator assembly provided by the embodiment of the invention, the wire passing steps with different heights are arranged on the insulating framework, so that the axial heights corresponding to the wire passing bridges of the stator windings of different phases are different when the wire passing bridges of the stator windings are wound along the circumferential direction, and therefore, the mutual interference of the wire passing bridges of the stator windings of different phases can be avoided, the winding mode of the stator assembly is more reasonable, the circuit is clearer, and the use safety of the stator assembly is further improved.
According to the stator assembly of one embodiment of the invention, each sub-insulation framework comprises a base body, the base body is provided with an accommodating cavity through which the stator core penetrates, the base body comprises a framework yoke part, a framework tooth part connected with the inner end of the framework yoke part and a framework shoe part connected with the inner end of the framework tooth part, the stator winding is wound on the surface of the framework tooth part, and the winding post and the wire passing step are arranged at the first end part of the framework yoke part in the axial direction.
According to the stator assembly provided by the embodiment of the invention, the first end part is provided with the baffle, the baffle is positioned at the inner end of the first end part, the stator winding is wound between the baffle and the framework boot part, the baffle is provided with the groove, and the bottom wall of the groove forms the wire passing step.
According to the stator assembly provided by the embodiment of the invention, the first end part is provided with a positioning boss used for positioning the stator assembly, the positioning boss is positioned at the outer end of the first end part, and the wire bridge is positioned at the inner side of the positioning boss.
According to the stator assembly, each base body comprises two winding posts and two wire passing steps, the two winding posts are arranged at intervals along the circumferential direction, and the two wire passing steps are arranged at intervals along the circumferential direction.
According to the stator assembly of one embodiment of the invention, the two winding posts of each base body are positioned at the circumferential outer sides of the two wire passing steps.
According to the stator assembly of one embodiment of the present invention, the wire bridge led out from the stator winding wound around any one of the sub-insulating frames and the wire bridge led out from the stator winding of the same phase are supported by the wire step of the sub-insulating frame and wound from the radial outer side of the corresponding winding post, and the wire bridge led out from the stator winding wound around the other sub-insulating frame is led into the sub-insulating frame from the outer side of the winding post of the sub-insulating frame.
According to the stator assembly provided by the embodiment of the invention, the stator core is formed in a ring shape by connecting the stator punching strips end to end, the stator punching strips are formed by stacking a plurality of stator punching sheets, the insulating framework is matched with the stator core, and the insulating framework is formed by integral injection molding on the outer surface of the stator punching strips when the stator punching strips are linear.
The invention also provides a motor.
An electric machine according to an embodiment of the invention comprises a stator assembly as described in any of the above embodiments.
The motor according to an embodiment of the present invention, further includes: the stator assembly surrounds the periphery of the water diversion disc; the bearing support is connected with the water distribution disc, a cooling cavity is defined by the bearing support and the water distribution disc together, and the bearing support is provided with an exhaust hole; the stator assembly surrounds the periphery of the water diversion disc; a rotor mounted within the cooling cavity; the motor shaft is connected with the rotor and penetrates through the bearing support; a first bearing mounted to the bearing support and configured to support the motor shaft.
The invention also provides a pump.
The pump according to the embodiment of the present invention is provided with the motor according to the above embodiment.
The advantages of the motor and the pump and the stator assembly are the same compared with the prior art, and are not described in detail herein.
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 is a schematic structural view of a sub-insulating bobbin according to an embodiment of the present invention;
fig. 2 is another structural view of a sub-insulating bobbin according to an embodiment of the present invention;
fig. 3 is yet another structural view of a sub-insulating bobbin according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an insulating framework according to an embodiment of the invention;
fig. 5 is a front view of a motor according to an embodiment of the present invention;
fig. 6 is a cross-sectional view of a motor according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a motor according to an embodiment of the present invention;
fig. 8 is a top view of a motor according to an embodiment of the present invention;
fig. 9 is a side view of a motor according to an embodiment of the present invention;
FIG. 10 is an overall block diagram of a stator assembly according to an embodiment of the present invention;
fig. 11 is an overall structural view of a stator core according to an embodiment of the present invention;
FIG. 12 is a block diagram of a stator bar according to an embodiment of the present invention;
fig. 13 is a structural view of a stator lamination according to an embodiment of the present invention.
Reference numerals:
the motor (1000) is provided with a motor,
the stator assembly 1001 is provided with,
the stator core 1, the stator punching strip 11, the stator punching sheet 110, the sub-insulating framework 2, the sub-insulating framework group 201, the insulating framework 202, the winding post 203, the wire passing step 204, the base body 210, the framework yoke part 211, the framework tooth part 212, the framework boot part 213, the baffle plate 214, the positioning boss 215 and the stator winding 3,
the water distribution plate 5, the cylinder body 51, the flange 52, the cooling cavity 56, the bearing support 6, the first bearing limiting seat 61, the sealing plate 62, the connecting part 63, the exhaust hole 64, the rotor 71, the motor shaft 72, the first bearing 73, the second bearing 74 and the second bearing limiting seat 75.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The present invention proposes a stator assembly 1001.
As shown in fig. 1 to 13, a stator assembly 1001 according to an embodiment of the present invention includes: stator core 1, insulating skeleton 202 and stator winding 3.
The insulating framework 202 is coated outside the stator core 1, as shown in fig. 11-13, the stator core 1 is formed in a ring shape by connecting the stator punching bars 11 end to end, and the stator punching bars 11 are formed by stacking a plurality of stator punching sheets 110. Here, "end-to-end" is to bend the stator bar 11 so that a first end of the stator bar 11 and a second end of the stator bar 11 are connected, thereby forming the circular ring-shaped stator core 1. In other words, as shown in fig. 12 and 13, the stator bar 11 is in a flat state before being formed into a circular ring shape and has a first end (e.g., left end in fig. 12 or 13) and a second end (e.g., right end in fig. 12 or 13), and the stator bar 12 is bent into a circular ring shape (shown in fig. 11) and connects the first end and the second end thereof. The "stacking" is to stack a plurality of stator laminations 110 together in sequence and connect adjacent stator laminations 110.
As shown in fig. 10, the insulating frame 202 is matched with the stator core 1, the insulating frame 202 is formed by integral injection molding on the outer surface of the stator punching bar 11 when the stator punching bar 11 is linear, and the stator punching bar 11 matched with the insulating frame 202 is bent into a circular ring shape and is connected end to form the stator assembly 1001. Wherein, insulating skeleton 202 includes a plurality of sub-insulating skeleton groups 201, and a plurality of sub-insulating skeleton groups 201 set up along circumference in order, and every sub-insulating skeleton group 201 includes three sub-insulating skeleton 2 that sets up in order along circumference, and every sub-insulating skeleton 2 all is equipped with wrapping post 203 and crosses line step 204, and the height of the different sub-insulating skeleton 2 of same sub-insulating skeleton group 201 is all inequality through line step 204.
As shown in fig. 4, the insulating frame 202 is formed by sequentially connecting a plurality of sub-insulating frame groups 201 end to end, and the sub-insulating frame group 201 includes three sub-insulating frames 2, that is, the insulating frame 202 is formed by sequentially connecting a plurality of sub-insulating frames 2 end to end. In the embodiment shown in fig. 1-6, the insulating skeleton 202 includes three sub-insulating skeleton groups 201, each sub-insulating skeleton group 201 includes three sub-insulating skeletons 2, and the heights of the wire-passing steps 204 of the three sub-insulating skeletons 2 in each sub-insulating skeleton group 201 gradually increase, that is, the insulating skeleton 202 is formed by connecting nine sub-insulating skeletons 2 end to end in sequence. After the nine sub-insulating frameworks 2 are connected into a ring, the three sub-insulating frameworks 2 with the same height of the line-passing step 204 are uniformly spaced along the circumferential direction, that is, the intervals of the sub-insulating frameworks 2 with the same height of any two line-passing steps 204 are the same.
The stator winding 3 is wound on the surface of the insulating framework 202, the winding posts 203 are used for fixing the wire passing bridges of the stator winding 3, and the wire passing steps 204 of different sub-insulating frameworks 2 of the same sub-insulating framework group 201 are respectively used for supporting different wire passing bridges, namely the axial heights of the different wire passing bridges are different when the different wire passing bridges are circumferentially surrounded.
It should be noted that one of the nine sub-insulation bobbins 2 is provided with a power supply puncture type rubber case for mounting a power supply terminal, and the other of the nine sub-insulation bobbins 2 is provided with a neutral puncture type rubber case for mounting a center line terminal, the neutral puncture type rubber case is connected with a lead wire of the stator winding 3, and the lead wire of the stator winding 3 needs to pass through the corresponding winding post 203 and the corresponding wire passing step 204, so that after the lead wires of different stator windings 3 are wound through the corresponding sub-insulation bobbins 2, the stator assembly forms three wire passing bridges 1001 with different heights, that is, the heights of the lead wires of the stator windings 3 with different phases are different. Therefore, the winding of the wire passing bridges of different phases of the stator assembly 1001 is clear, so that lines corresponding to respective frameworks are clear and do not interfere with each other, and the reasonability of the structure of the stator assembly 1001 and the safety in use are improved.
In the embodiment shown in fig. 4, each sub-insulating framework group 201 includes three wire-passing steps 204 with different heights, so that the wire-passing bridge can be divided into high, medium and low levels, the reliability of the motor is enhanced, and the stator assembly 1001 is neat and beautiful and ensures sufficient electrical clearance. The stator assembly 1001 connected into a ring shape is provided with the special winding post 203 and the wire passing step 204, so that the wire passing bridge can be wound in a curve manner, the wire passing bridge is ensured not to be pulled out in the rounding or winding process, and the yield is improved.
According to the stator assembly 1001 provided by the embodiment of the invention, the wire passing steps 204 with different heights are arranged on the insulating framework 202, so that the axial heights corresponding to the wire passing bridges of the stator windings 3 with different phases are different when the wire passing bridges of the stator windings 3 are wound along the circumferential direction, thereby avoiding the mutual interference of the wire passing bridges of the stator windings 3 with different phases, ensuring that the stator assembly 1001 has enough electric gaps, ensuring that the winding mode of the stator assembly 1001 is more reasonable and the circuit is clearer, and further improving the use safety of the stator assembly 1001.
In some embodiments, as shown in fig. 1, each sub-insulating bobbin 2 includes a base 210, the base 210 has a receiving cavity, the stator core 1 penetrates through the receiving cavity, the base 210 includes a bobbin yoke portion 211, a bobbin tooth portion 212 and a bobbin shoe portion 213, the bobbin tooth portion 212 is connected to an inner end of the bobbin yoke portion 211, the bobbin shoe portion 213 is connected to an inner end of the bobbin tooth portion 212, and the receiving cavity is adapted to a shape of the stator core 1, so that the insulating bobbin 202 is sleeved on the stator core 1.
The stator winding 3 is wound on the surface of the framework tooth part 212, the winding post 203 and the wire passing step 204 are arranged at the first end part of the framework yoke part 211 in the axial direction, and a lead of the stator winding 3 extends towards the puncture type rubber shell through the corresponding winding post 203 and the wire passing step 204 so as to connect the winding of the stator winding 3 with the power puncture type rubber shell and the sexual puncture type rubber shell into a whole to realize loop communication. Wherein, skeleton yoke portion 211 is located stator module 1001's the outside, and the first end that locates skeleton yoke portion 211 with wrapping post 203 and cross line step 204 can be convenient for the user to carry out the wire winding process, and is convenient and practical.
In some embodiments, as shown in fig. 1-3, the first end portion is provided with a baffle 214, the baffle 214 is located at the inner end of the first end portion, the baffle 214 is located at the inner side of the winding post 203, and the stator winding 3 is wound between the baffle 214 and the frame shoe 213, so as to prevent the stator winding 3 from moving. The baffle 214 has a groove, the bottom wall of which forms the wire passing step 204, and the baffle includes two circumferentially spaced grooves, and the lead wires of the stator winding 3 can be led from one of the two grooves to the inside of the baffle 214 and from the inside of the baffle 214 to the outside of the baffle 214 from the other of the two grooves. Thus, the lead wires of the stator winding 3 are arranged extending in the circumferential direction through the groove of the barrier 214, which is located inside its corresponding winding leg 203, and supported at a set height by the wire passing step 204 of the groove. Therefore, the supporting heights of the wire passing steps 204 of the insulating frameworks 2 of different phases are different, so that the lead wires of the stator windings 3 of different phases can be respectively arranged at different heights when being led out. Therefore, mutual interference of the lead wires of the stator windings 3 of different phases can be avoided, so that the stator assembly 1001 is more reasonable in structure and safer to use.
As shown in fig. 1-3, the first end is provided with a positioning boss 215, the positioning boss 215 is used for positioning the stator assembly 1001, the positioning boss 215 is located at the outer end of the first end, and the wire passing bridge is located at the inner side of the positioning boss 215, so that the wire passing bridge is located between the positioning boss 215 and the baffle plate 214. Wherein, the wire-passing bridge of the stator assembly 1001 in phase with the sub-insulating framework 2 is positioned in the groove of the baffle 214 of the sub-insulating framework 2; the wire passing bridges of the stator assembly 1001 out of phase with the sub-insulating bobbin 2 are located between the winding posts 203 and the positioning bosses 215 of the sub-insulating bobbin 2 so that the wire passing bridges of the stator assembly 1001 out of phase do not cross.
In some embodiments, as shown in fig. 1-3, each base body 210 includes two winding posts 203 and two wire passing steps 204, the two winding posts 203 are arranged at intervals in the circumferential direction, the two wire passing steps 204 are arranged at intervals in the circumferential direction, and each wire passing step 204 is spaced from the corresponding winding post 203 in the inside-outside direction, that is, each base body 210 includes two groups of winding posts 203 and wire passing steps 204, one group is used for incoming wires, and the other group is used for outgoing wires. Thus, when the wire-passing bridge of one of the two stator assemblies 1001 in the same phase is wound towards the other stator assembly, the wire-passing bridge enters the corresponding sub-insulating framework 2 from the gap between one group of winding posts 203 and the positioning boss 215 of the other stator assembly 1001, is led into the inner side of the baffle plate 214 from one groove of the baffle plate 214 of the sub-insulating framework 2, is led out to the outer side of the baffle plate 214 from the other groove of the two grooves from the inner side of the baffle plate 214, is supported on the wire-passing step 204 of the groove, and is further led out from the gap between the other group of winding posts 203 and the positioning boss 215 of the stator assembly 1001, and the winding of the wire-passing bridge is completed.
In some embodiments, as shown in fig. 1 to 3, the two winding posts 203 of each base body 210 are located at the circumferential outer sides of the two wire passing steps 204, that is, the wire passing steps 204 are located at the inner sides of the winding posts 203, so that the wire passing bridges bypass the inner sides of the baffles 214 and are supported by the wire passing steps 204, wherein the wire passing bridges which are out of phase with the wire passing bridges are located at the outer sides of the baffles 214, and the heights of the wire passing bridge supports of different phases are different, so that the wire passing bridges of different phases are not crossed during winding, thereby avoiding the leads of the stator windings 3 of different phases from interfering with each other and improving safety.
In some embodiments, the wire bridge led out from the stator winding 3 wound on any one of the sub-insulating bobbins 2 and the wire bridge led out from the stator winding 3 in the same phase are supported by the wire step 204 of the sub-insulating bobbin 2 and wound from the radially outer side of the corresponding winding post 203, whereby the wire bridge of the stator winding 3 in the same phase as the stator winding 3 of the sub-insulating bobbin 2 is led in from one groove of the baffle 214 and the wire bridge is led out from the other groove of the baffle 214. The wire bridge led out by winding the stator winding 3 arranged on the other sub-insulating framework 2 is led into the sub-insulating framework 2 from the outer side of the winding post 203 of the sub-insulating framework 2. In this way, the wire passing bridge of the stator winding 3 of any one sub-insulation bobbin 2 or the wire passing bridge of the stator winding 3 of the same phase bypasses the inner side of the baffle plate 214 of the sub-insulation bobbin 2, the wire passing bridges of the stator assembly 1001 of different phases of the stator assembly 1001 of the sub-insulation bobbin 2 are wound on the outer side of the baffle plate 214, and the wire passing bridges of the stator assembly 1001 of different phases are supported at different heights by the corresponding wire passing steps 204. From this, stator module 1001's the line bridge of crossing of different looks is spaced apart each other to form the difference in height along the axial, be convenient for realize the reasonable coiling of stator module 1001's circuit, guarantee that stator module 1001 has sufficient electric clearance, prevent that stator module 1001 from producing accident in the use that the electric current is unusual.
The present invention proposes an electrical machine 1000 provided with a stator assembly 1001 according to any of the embodiments described above.
The following describes the motor 1000 according to the embodiment of the present invention with reference to fig. 5 to fig. 13, where the motor 1000 has a unique cooling structure, which can increase the cooling speed of the rotor 71 of the motor 1000, ensure that sufficient cooling liquid is in the motor 1000 for cooling, ensure that the motor 1000 normally operates, and improve the product performance and power density of the motor 1000.
The motor 1000 according to an embodiment of the present invention includes: water diversion disc 5, bearing support 6, stator assembly, rotor 71, motor shaft 72, first bearing 73 and second bearing 74.
As shown in fig. 6, the bearing support 6 is connected to the water diversion disc 5, and the bearing support 6 and the water diversion disc 5 together define a cooling cavity 56, and a cooling liquid is filled in the cooling cavity 56, and the cooling liquid in the cooling cavity 56 can play a good cooling role for the rotor 71. The cooling liquid can be water, so that when the motor is installed on the pump, the water in the pump can be used as the cooling liquid of the motor 1000, and the motor is convenient and economical. As shown in fig. 5, the bearing bracket 6 has a gas discharge hole 64, and the gas discharge hole 64 is used to discharge the gas in the cooling chamber 56. Thus, when the cooling liquid is injected into the cooling chamber 56, the gas in the cooling chamber 56 is gradually discharged through the exhaust hole 64 as the cooling liquid is injected. Therefore, the cooling cavity 56 can be ensured to be filled with sufficient cooling liquid, the optimal heat dissipation effect of the motor 1000 is achieved, the temperature of the rotor 71 is effectively reduced, and the product performance and the power density of the motor 1000 are effectively improved.
The stator assembly surrounds the periphery of the water diversion disc 5, the rotor 71 is installed in the water diversion disc 5, the rotor 71 is located at a position opposite to the stator assembly in the radial direction, the rotor 71 and the stator assembly are spaced by the water diversion disc 5, it can be guaranteed that cooling liquid for cooling the rotor 71 is not in contact with the stator assembly, it can be understood that the rotor 71 is a permanent magnet, the stator assembly comprises an electromagnetic coil, and the stator assembly and the cooling liquid are spaced to guarantee that the motor 1000 has good safety. Therefore, the rotor 71 can be effectively cooled and radiated, the working performance of the rotor 71 is prevented from being influenced by overhigh temperature, meanwhile, the cooling liquid is prevented from immersing the stator assembly, the current abnormality in the motor 1000 is effectively prevented, the working safety performance and stability of the motor 1000 are improved, and the product performance and the power density of the motor 1000 are further improved.
As shown in fig. 6, the motor shaft 72 is connected to the rotor 71, the motor shaft 72 and the rotor 71 may be connected by splines, or the motor shaft 72 and the rotor 71 may be integrally formed, although the connection manner of the motor shaft 72 and the rotor 71 is not limited thereto. Therefore, the stator assembly is powered on to drive the rotor 71 to rotate, the rotor 71 drives the motor shaft 72 to rotate and output torque, so as to drive an external component connected with the motor shaft 72 to rotate, the motor shaft 72 penetrates through the bearing support 6, namely, the bearing support 6 is provided with an avoidance hole, and one end of the motor shaft 72 penetrates through the avoidance hole and extends into the cooling cavity 56 so as to be relatively fixed with the rotor 71. Wherein, the cooling liquid can enter the cooling cavity 56 through the shaft gap of the motor shaft 72, thereby realizing the cooling function of the rotor 71 and the motor shaft 72.
As shown in fig. 6, the first bearing 73 is mounted on the bearing bracket 6, and the first bearing 73 is used for supporting the motor shaft 72, that is, the outer ring of the first bearing 73 is relatively fixed to the bearing bracket 6, and the inner ring of the first bearing 73 is relatively fixed to the motor shaft 72, so that the stator assembly drives the rotor 71 and the motor shaft 72 to rotate relative to the bearing bracket 6, and the motor shaft 72 is supported on the bearing bracket 6 through the first bearing 73, thereby greatly reducing the friction force of the rotation of the motor shaft 72, improving the efficiency of the rotation of the motor shaft 72, reducing the friction loss, making the overall structure of the motor 1000 more reasonable and reliable, and improving the usability and power density of the motor 1000.
According to the motor 1000 of the embodiment of the invention, the cooling cavity 56 is defined by the water distribution disc 5 and the bearing support 6, and the bearing support 6 is provided with the vent holes 64, so that when cooling liquid is injected into the cooling cavity 56, gas in the cooling cavity 56 can be discharged in time, and sufficient cooling liquid is ensured in the cooling cavity 56, thereby realizing effective cooling of the rotor 71 and the motor shaft 72, effectively reducing the temperature rise of the rotor 71, ensuring normal operation of the motor 1000, prolonging the service life of the motor 1000, and having good practicability and reliability, and the cooling structure of the motor 1000 is simple and unique.
In some embodiments, as shown in fig. 6, the bearing bracket 6 includes: a first bearing retainer 61, a sealing plate 62 and a connecting portion 63.
The motor shaft 72 is supported on the first bearing 73, the motor shaft 72 penetrates through the first bearing limiting seat 61, one end of the first bearing 73 abuts against the first bearing limiting seat 61, the first bearing limiting seat 61 is provided with an avoiding hole, and the motor shaft 72 penetrates through the avoiding hole and extends into the cooling cavity 56.
The inner periphery of the sealing plate 62 is connected with the first bearing limiting seat 61, namely the sealing plate 62 is arranged around the first bearing limiting seat 61, the connecting part 63 is connected with the outer periphery of the sealing plate 62, namely the bearing support 6 comprises the connecting part 63, the sealing plate 62 and the first bearing limiting seat 61 which are sequentially connected along the radial direction, the connecting part 63, the sealing plate 62 and the first bearing limiting seat 61 can be integrally formed, the overall structural strength of the bearing support 6 is convenient to improve, as shown in fig. 5-9, the connecting part 63 and the first bearing limiting seat 61 are all in a circular ring shape, the connecting part 63 is connected with the water diversion disc 5, and the outer periphery of the connecting part 63 is connected with the water diversion disc 5 in a sealing mode.
Like this, connecting portion 63, sealing plate 62, the spacing seat of first bearing 61 and water diversion disk 5 inject cooling chamber 56, and then guarantee that cooling chamber 56 is inside stable for install rotor 71 in cooling chamber 56 can obtain stable, effectual cooling effect, improve the reliability of motor 1000 work.
As shown in fig. 5 and 7, the exhaust hole 64 is disposed on the connecting portion 63, the exhaust hole 64 extends along the circumferential direction of the connecting portion 63, in some embodiments, the exhaust hole 64 is multiple, and the exhaust holes 64 are circumferentially spaced, so that the exhaust hole 64 of the connecting portion 63 has a larger airflow cross section, when the cooling liquid is injected into the cooling cavity 56, the gas in the cooling cavity 56 can be timely and effectively exhausted from the exhaust hole 64, thereby preventing the gas in the cooling cavity 56 from being excessively high and affecting the injection efficiency of the cooling liquid, and at the same time, effectively exhausting the gas from the cooling cavity 56, and ensuring that the cooling liquid is injected into the cooling cavity 56 in a sufficient amount, so that the rotor 71 and the motor shaft 72 are effectively cooled, ensuring that the rotor 71 still has a reasonable and safe working temperature when the motor 1000 rotates at a high speed, and improving the usability of the motor 1000. In the description of the present invention, "a plurality" means two or more.
As shown in fig. 5, the exhaust hole 64 is disposed at the upper portion of the connecting portion 63, and as shown in fig. 6, the exhaust hole 64 is vertically higher than the upper end of the rotor 71, it can be understood that, during the process of injecting the cooling liquid into the cooling cavity 56, the gas in the cooling cavity 56 moves upward and moves up to the exhaust hole 64 to exhaust the cooling cavity 56 from the exhaust hole 64, after the gas in the cooling cavity 56 is exhausted, a sufficient amount of cooling liquid is injected into the cooling cavity 56, and the cooling liquid has passed through the rotor 71, so that any position of the rotor 71 can be guaranteed to be in good contact with the cooling liquid, the heat dissipation efficiency of the rotor 71 is greatly improved, the excessive temperature rise during the rotation of the rotor 71 is avoided, and the service life of the rotor 71 is prolonged.
As shown in fig. 5, the connecting portion 63 is provided with two exhaust holes 64 spaced apart from each other in the circumferential direction, the two exhaust holes 64 are spaced apart from each other in the circumferential direction of the connecting portion 63, the exhaust holes 64 are arc-shaped long holes, and the two exhaust holes 64 are symmetrically disposed in the vertical plane, so that the exhaust efficiency at each position in the cooling cavity 56 is balanced, the rationality of the overall structure of the motor 1000 is improved, and the heat dissipation effect of the motor 1000 is achieved.
In some embodiments, as shown in fig. 6, the sealing plate 62 is inclined from the inner periphery to the outer periphery in a direction away from the rotor 71, that is, the distance between the inner periphery of the sealing plate 62 and the rotor 71 is smaller than the distance between the outer periphery of the sealing plate 62 and the rotor 71, and as shown in fig. 5, the exhaust holes 64 are located above the sealing plate 62, so that when the cooling liquid is injected into the cooling cavity 56, the intercepting area of the upper part of the cooling cavity 56 is larger than that of the lower part of the cooling cavity 56, and the gas in the cooling cavity 56 gradually rises along the inclined surface of the sealing plate 62, so that the gas in the cooling cavity 56 is exhausted more smoothly, the efficiency of gas exhaust is improved, and the injection of the cooling liquid is facilitated.
In some embodiments, as shown in fig. 6, the knock out plate 5 comprises a barrel 51, a flange 52 and a second bearing retainer.
Wherein, the first end of barrel 51 is closed, and the second end of barrel 51 links to each other with flange 52, and flange 52 links to each other with bearing bracket 6, and flange 52 links to each other with connecting portion 63, and rotor 71 is established in the inside of barrel 51, and stator module encircles the periphery at barrel 51. In this way, the rotor 71 is spaced from the stator assembly through the cylinder 51 and the flange 52, so that the cooling liquid in the cooling cavity 56 is in contact with the rotor 71, the rotor 71 is guaranteed to effectively dissipate heat, meanwhile, the cooling liquid is prevented from immersing the stator assembly, and the reasonability and the safety of the design of the motor 1000 are improved. The motor 1000 further includes a second bearing 74, a second bearing limiting seat 75 is disposed at a first end of the cylinder 51, the second bearing 74 is used for supporting the motor shaft 72, one end of the second bearing 74 abuts against the second bearing limiting seat 75, and the first bearing 73 and the second bearing 74 can limit the motor shaft 72 in the radial direction.
In one embodiment, the motor 1000 is designed with a unique friction plate in the axial direction, and the friction plate can effectively prevent the rotor 71 from moving in the axial direction and limit the motor shaft 72 in the axial direction, thereby ensuring the continuous normal operation of the motor 1000 and increasing the reliability of the motor 1000. In this way, the motor shaft 72 only needs to rotate in the circumferential direction, and the motor shaft 72 is supported by the motor 1000 through the first bearing 73 and the second bearing 74, so that the friction force of the motor shaft 72 rotating in the circumferential direction is small, that is, the rotation resistance is small, thereby improving the power density of the motor 1000 and improving the production efficiency of the motor 1000.
As shown in fig. 10, the stator assembly according to the embodiment of the present invention includes a stator core 1, an insulating frame 2, and a stator winding 3, where the stator core 1 is formed in a circular shape by connecting end-to-end stator strips 11, and the stator strips 11 are formed by stacking a plurality of stator laminations 110. Here, "end-to-end" is to bend the stator bar 11 so that a first end of the stator bar 11 and a second end of the stator bar 11 are connected, thereby forming the circular ring-shaped stator core 1. In other words, the stator bar 11 is in a flat state before being formed into a circular ring shape and has a first end and a second end, and the stator bar 12 is bent into a circular ring shape and connects the first end and the second end thereof. The "stacking" is to stack a plurality of stator laminations 110 together in sequence and connect adjacent stator laminations 110.
Specifically, as shown in fig. 13, the stator punching sheet 110 is in a bar shape, and the stator punching sheet 110 in the bar shape can make full use of materials during punching, so that the amount of waste materials is reduced, the utilization rate of the punching sheet is improved, the production cost is reduced, and the large-scale and automatic production is facilitated, and the stator punching sheet has the advantages of convenience in the processing process of the motor 1000, high production efficiency, high efficiency of the motor 1000 and the like. In the description of the present invention, "a plurality" means at least two, e.g., two, three, unless specifically limited otherwise.
Insulating skeleton 2 and stator core 1 cooperation, insulating skeleton 2 is when stator is punched strip 11 and is the linear type at the integrative injection moulding of stator surface of punching strip 11 and forms, as shown in fig. 10. In other words, the stator bars 11 are straight bars before bending, and the stator bars 11 are bent into a circular ring shape and connected end to form the stator core 1. It can be understood that the stator bars 11 fitted with the insulating frame 2 are bent into a circular ring shape and connected end to form a stator assembly.
It can be understood that the insulating frame 2 is wound after injection molding when the stator core 1 is a straight bar, so as to facilitate installation and enhance the performance of the motor 1000 and improve the production efficiency. Specifically, when stator core 1 is a bar, the distance between two adjacent stator teeth 112 is large, so that the installation is convenient, and on the other hand, when motor 1000 is a bar, insulating skeleton 2 is formed and wound, when the stator core is round, the notch between adjacent stator shoe portions 113 can be designed to be small, and the stator shoe portions 113 can be designed to be large, so that the magnetic field reception is facilitated, and the performance of motor 1000 is improved.
In some embodiments, as shown in fig. 1, the insulating frame 2 includes a frame yoke portion 211, a frame tooth portion 212, and a frame shoe portion 213, an outer end of the frame tooth portion 212 is connected to the frame yoke portion 211, the frame shoe portion 213 is disposed at an end of the frame tooth portion 212 away from the frame yoke portion 211, that is, an inner end of the frame tooth portion 212 is connected to the frame shoe portion 213, an accommodating cavity is disposed in the insulating frame 2, the stator core 1 penetrates the accommodating cavity, and the accommodating cavity is adapted to each of the stator yoke portion 111, the stator tooth portion 112, and the stator shoe portion 113 of the stator core 1, so that the insulating frame 2 is disposed on the stator core 1.
In some embodiments, the inner edge of the skeletal shoe 213 is an arcuate surface that is concave from the inside to the outside, and the inner edge of the skeletal shoe 213 has a notch. It will be appreciated that the notch is recessed from the arcuate surface from the inside to the outside. Furthermore, the notch is an arc-shaped notch, and the arc shape is concave from inside to outside, but the invention is not limited thereto. It can be understood that, this insulating skeleton simple structure, the inner edge of skeleton boots portion is for following the inside arc face of external concave and being equipped with the breach, can strengthen the thermal diffusivity, save the material, manufacturing cost is reduced, yields and production efficiency have been improved, and pressure resistance improves, thereby the working property of motor 1000 has been improved, in addition, when insulating skeleton is moulded plastics to an organic whole, can fix insulating skeleton's mould and stator in this breach department, with the precision positioning between the mould of realization insulating skeleton and the stator, the precision of shaping insulating skeleton has been improved.
The invention also provides a pump.
According to an embodiment of the invention, a pump having a water inlet and a water outlet, the pump comprises: pump casing, impeller and motor 1000 of any of the embodiments described above.
The pump casing is internally provided with a pump cavity, the water inlet and the water outlet are communicated with the pump cavity, the impeller is arranged in the pump cavity, the motor shaft 72 of the motor 1000 is connected with the impeller, the motor 1000 can drive the impeller to rotate, the water distribution disc 5 is arranged at the first end of the pump casing, and the water distribution disc 5 is used for separating a stator assembly and a rotor 71 in the motor 1000.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean 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 this specification, the schematic representations of the terms used above 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.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (11)
1. A stator assembly, comprising:
a stator core;
the insulating framework is coated outside the stator iron core and comprises a plurality of sub-insulating framework groups which are sequentially arranged along the circumferential direction, each sub-insulating framework group comprises three sub-insulating frameworks which are sequentially arranged along the circumferential direction, each sub-insulating framework is provided with a winding post and a wire passing step, and the heights of the wire passing steps of different sub-insulating frameworks of the same sub-insulating framework group are different;
the stator winding is wound on the surface of the insulating framework, the winding posts are used for fixing the wire passing bridges of the stator winding, and the different wire passing steps of the sub-insulating framework in the same sub-insulating framework group are respectively used for supporting the different wire passing bridges.
2. The stator assembly of claim 1, wherein each of the sub-insulating bobbins comprises a base body having a receiving cavity through which the stator core passes, the base body comprising a bobbin yoke portion, a bobbin tooth portion connected to an inner end of the bobbin yoke portion, and a bobbin shoe portion connected to an inner end of the bobbin tooth portion, the stator winding being wound on a surface of the bobbin tooth portion, and the winding leg and the winding step being provided at a first end portion of the bobbin yoke portion in an axial direction.
3. The stator assembly of claim 2, wherein the first end is provided with a baffle at an inner end thereof, the stator winding is wound between the baffle and the frame shoe, the baffle is provided with a groove, and a bottom wall of the groove forms the wire passing step.
4. The stator assembly of claim 2, wherein the first end is provided with a positioning boss for positioning the stator assembly, the positioning boss is located at an outer end of the first end, and the wire bridge is located inside the positioning boss.
5. The stator assembly of claim 2 wherein each of said bases includes two of said winding posts and two of said over-run steps, said two winding posts being circumferentially spaced apart and said two over-run steps being circumferentially spaced apart.
6. The stator assembly of any of claims 1-5 wherein the two winding posts of each base body are located circumferentially outward of the two threading steps.
7. The stator assembly according to claim 6, wherein the crossover bridge led out from the stator winding wound around any one of the sub-insulating bobbins and the crossover bridge led out from the stator winding of the same phase are supported by the crossover step of the sub-insulating bobbin and wound from a radially outer side of the corresponding winding post, and the crossover bridge led out from the stator winding wound around the other sub-insulating bobbin is led into the sub-insulating bobbin from an outer side of the winding post of the sub-insulating bobbin.
8. The stator assembly according to any of claims 1-5, wherein the stator core is formed in a ring shape by stacking a plurality of stator laminations end to end, the insulating framework is engaged with the stator core, and the insulating framework is formed by injection molding on the outer surface of the stator laminations when the stator laminations are linear.
9. An electrical machine comprising a stator assembly according to any of claims 1-8.
10. The electric machine of claim 9, further comprising:
the stator assembly surrounds the periphery of the water diversion disc;
the bearing support is connected with the water distribution disc, a cooling cavity is defined by the bearing support and the water distribution disc together, and the bearing support is provided with an exhaust hole;
the stator assembly surrounds the periphery of the water diversion disc;
a rotor mounted within the cooling cavity;
the motor shaft is connected with the rotor and penetrates through the bearing support;
a first bearing mounted to the bearing support and configured to support the motor shaft.
11. A pump, characterized in that a motor according to claim 9 or 10 is provided.
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| CN201810922913.7A CN110829665B (en) | 2018-08-14 | 2018-08-14 | Stator module, motor and pump |
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| CN201810922913.7A CN110829665B (en) | 2018-08-14 | 2018-08-14 | Stator module, motor and pump |
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| CN110829665B CN110829665B (en) | 2022-06-10 |
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| CN111953112A (en) * | 2020-08-05 | 2020-11-17 | 珠海凯邦电机制造有限公司 | Winding framework and motor stator |
| CN112104129A (en) * | 2020-09-16 | 2020-12-18 | 珠海凯邦电机制造有限公司 | Framework structure, stator and motor |
| CN112332563A (en) * | 2020-10-31 | 2021-02-05 | 合肥凯邦电机有限公司 | Stator assembly, motor and winding method of stator assembly |
| WO2022002222A1 (en) * | 2020-07-03 | 2022-01-06 | 浙江三花汽车零部件有限公司 | Electric pump |
| CN114094734A (en) * | 2021-11-19 | 2022-02-25 | 广东美芝制冷设备有限公司 | Stator module, motor, compressor and refrigeration equipment |
| WO2024104042A1 (en) * | 2022-11-14 | 2024-05-23 | 广东威灵电机制造有限公司 | Stator core assembly, stator, and motor |
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| CN110829665B (en) | 2022-06-10 |
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