CN212304905U - Stator assembly, motor and compressor - Google Patents

Abstract

The utility model provides a stator module, motor and compressor, stator module include stator core and stop part, and stator core has the installing port that runs through along the axial, and the installing port is used for assembling the rotor subassembly of motor. The stopper is provided at an axial end portion of the stator core. The utility model discloses an axial tip at stator core sets up the stop part to can carry out the backstop to the oil-gas mixture who throws away, reduce oil-gas mixture as far as possible and get rid of the casing that has the compressor of this motor on, and then avoid oil-gas mixture to discharge to the external world through the gas vent on the casing, thereby reduce the compressor by a wide margin and tell the oil mass, thereby improve the reliability of compressor and the efficiency of compressor.

Description

Stator assembly, motor and compressor

Technical Field

The utility model relates to an electrical equipment technical field particularly, relates to a stator module, a motor and a compressor.

Background

At present, as a core component of the compressor, the motor provides the compressor with rotating power, and the performance of the motor directly affects the performance of the compressor. The compressor comprises a motor and a compression part positioned on one side of the axial direction of the motor, and a refrigerant in a high-pressure cavity in the compression part and lubricating oil in the compressor can flow through the motor. When the rotor in the motor is rotated at a high speed relative to the stator, the oil-gas mixture of the refrigerant and the lubricating oil on one side of the compression part can flow to the axial end face of the rotor, and simultaneously, the oil-gas mixture is thrown to the shell of the compressor under the action of centrifugal force generated by the high-speed rotation process of the rotor, and then is discharged to the outside through the exhaust port in the shell, so that the oil output of the compressor is influenced.

SUMMERY OF THE UTILITY MODEL

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

To this end, a first aspect of the present invention is to provide a stator assembly.

A second aspect of the present invention is to provide an electric machine.

A third aspect of the present invention is to provide a compressor.

In view of this, according to the first aspect of the present invention, there is provided a stator assembly for an electric machine, the stator assembly comprising a stator core and a stopper, the stator core having a mounting opening running through in an axial direction, the mounting opening being used for assembling a rotor assembly of the electric machine. The stopper is provided at an axial end portion of the stator core.

The utility model provides a stator module includes stator core and stop part, and stator core piles up to constitute towards the piece by a plurality of stators, and the stator is made towards the piece by the silicon steel material. Wherein, the silicon steel is silicon alloy steel with 1.0-4.5% of silicon content and less than 0.08% of carbon content. Silicon steel has the characteristics of high magnetic permeability, low coercive force, large resistivity and the like, so that the ratio of hysteresis loss to eddy current loss is small. The stator core is provided with an axially penetrating mounting opening, the mounting opening is used for assembling a rotor assembly of the motor, and the rotor assembly can rotate relative to the stator assembly. The rotor component of the motor can drive the oil-gas mixture formed by lubricating oil and refrigerant to flow along the axial direction in the process of high-speed rotation, when the oil-gas mixture flows to the end part of the rotor component, the oil-gas mixture can be thrown to the periphery under the action of centrifugal force generated in the process of high-speed rotation, the utility model discloses a stop part is arranged at the axial end part of the stator core, thereby the thrown oil-gas mixture can be stopped, the oil-gas mixture is thrown to the shell of the compressor with the motor as far as possible, the oil-gas mixture is prevented from being discharged to the outside through the exhaust port on the shell, the oil mass of the compressor is greatly reduced, thereby the reliability of the compressor and the energy efficiency of the compressor are improved, particularly, the oil-gas mixture stopped by the stop part can flow back to the oil groove of the compressor again through the gap between the, therefore, the oil shortage of the compressor can be avoided, the reliability risk of the compressor is increased due to the fact that mechanical parts are severely rubbed when the oil shortage of the compressor occurs, meanwhile, the loss between the mechanical parts is increased, the torque is also increased, and the energy efficiency of the compressor is directly reduced.

It is worth mentioning that the stop member may be an insulating member, and the stop member may contact with the stator core, and may also contact with the stator winding disposed on the stator core, and in order to ensure the insulating property between the stator core and the stator winding in the stator assembly, the stop member may be disposed as an insulating member, so that the structural design and assembly difficulty of the stop member may be reduced. Of course, the stop member may also be a non-insulating member, which may have high requirements on the assembly position and the structural design of the stop member, and the insulating property between the stator core and the stator winding is also achieved on the premise of ensuring effective installation of the stop member.

It is worth mentioning that the stop piece can be of an integrated structure, so that the production and preparation difficulty of the stop piece can be reduced, and the integral structural strength of the stop piece is ensured. In particular, the stopper may be integrally formed by injection molding.

In one possible design, the stop piece further extends in an axial direction away from the stator core.

In this design, the stop part has axial both ends, stop part one end on the axial contacts with stator core, stop part other end on the axial extends along the axial direction who deviates from stator core, stop part height-increasing on the axial promptly, when oil gas mixture gets rid of under the effect of centrifugal force to four weeks, the stop part can block oil gas mixture better, thereby make the oil gas mixture of the overwhelming majority can be blockked by the stop part, thereby in the oil groove of clearance refluence to the compressor between stator module and the rotor subassembly, thereby can avoid the compressor to lack oil.

In one possible design, the stop is further arranged on the stator core around the centre line of the stator core.

In this design, the stop is arranged on the stator core around the center line of the stator core, i.e. the stop is arranged on the stator core around the center axis of the mounting opening. Stop member is the loop configuration around establishing on stator core, when oil-gas mixture gets rid of under the effect of centrifugal force to four weeks, the stop member can realize the all-round oil-gas mixture that blocks to make the oil-gas mixture of the overwhelming majority can be blockked by stop member, thereby flow back to the oil groove of compressor again through the clearance between stator module and the rotor subassembly, thereby can avoid the compressor to lack oil.

In one possible design, the inner diameter of the stop is greater than or equal to the inner diameter of the stator core.

In this design, the inner diameter of the stopper is equal to or greater than the inner diameter of the stator core, wherein the inside of the stator core is the diameter of the mounting opening. When the stop part is of an annular structure, the inner diameter of the stop part and the inner diameter of the stator core meet the relation, so that the stop part can be ensured not to extend into the mounting opening, and at the moment, the rotor assembly in the mounting opening cannot interfere with the stop part when rotating at a high speed.

It should be noted that the stop element may not be of annular design, but in this case it does not project into the mounting opening.

In one possible design, the stop is further an insulator.

In the design, the stop part is an insulating part and can be contacted with the stator core and the stator winding arranged on the stator core, and in order to ensure the insulating property between the stator core and the stator winding in the stator assembly, the stop part can be arranged as the insulating part, so that the structural design and the assembly difficulty of the stop part can be reduced.

In one possible design, further, the stop is of one-piece construction.

In the design, the stop part can be of an integrated structure, so that the production and preparation difficulty of the stop part can be reduced, and the overall structural strength of the stop part is ensured. In particular, the stopper may be integrally formed by injection molding.

In one possible design, the stator assembly further includes a plurality of stator slots uniformly arranged on the stator core, each stator slot communicating with the mounting opening. The stop piece comprises a stop body and at least one positioning piece, and the stop body is arranged at the axial end part of the stator core. At least one positioning piece is arranged on the wall surface of the stop body close to the stator core, and the positioning piece extends into the notch of the stator slot.

In this design, stator module still includes a plurality of stator slots that set up on stator core, and a plurality of stator slots are evenly spaced apart and are arranged on stator core, and a plurality of stator core all communicate with the installing port, and stator module still includes stator winding, and a part holding of stator winding is in stator slot, and a part of stator winding sets up on stator core. The stop part comprises a stop body and a positioning part, the stop body is arranged at the axial end part of the stator core, the stop body is used for stopping oil-gas mixture, when the oil-gas mixture is thrown to the four weeks under the action of centrifugal force, the oil-gas mixture can be directly thrown onto the stop body, the oil-gas mixture can be better stopped by the stop body, so that most of the oil-gas mixture can be stopped by the stop part, the oil can flow back to the oil groove of the compressor again through the gap between the stator assembly and the rotor assembly, and the oil shortage of the compressor can be avoided. Specifically, the backstop body includes along the axial and be close to stator core's wall, and the setting element setting is on this wall, and the setting element can insert in the notch of stator slot to realize the reliable connection of stop member and stator core, the grafting mode is simple reliable, low cost. Specifically, the quantity of setting element is at least one, and when the quantity of setting element was a plurality of, then a plurality of setting elements evenly distributed is on the backstop body, when a plurality of setting elements and a plurality of magnet groove cooperation, then can ensure the reliable connectivity of stop member in all-round. Specifically, the number of the stator slots is equal to or greater than 9 and equal to or less than 48.

In one possible design, the positioning element further has a circumferential width that is greater than or equal to a slot opening width of the stator slot.

In this design, the circumferential width more than or equal to the notch width of stator slot of every setting element to can make interference fit between the notch of setting element and stator slot, when the stop part assembly was on stator core, through the interference fit of setting element and stator slot, can ensure the reliable connection performance between the two on the one hand, on the other hand can realize reliable connection on the basis of not with the help of other connection structure, and the cost is lower and easy and simple to handle.

In a possible design, the stop member further includes an assembly groove provided on a wall surface of the stop body near the stator core, away from the positioning member. The stator assembly further comprises stator windings and a connector, wherein the stator windings penetrate through the stator slots and are arranged on the stator iron core. The connector passes through the assembly slot to fix the stator winding with the stopper body.

In the design, an assembly groove is further formed in the wall surface, close to the stator core, of the stop body, and the assembly groove is arranged on the stop body in a mode of avoiding the positioning piece. Backstop body, assembly groove and setting element formula structure as an organic whole can realize through injection moulding. Further, the stator assembly further comprises a stator winding and a connecting piece, wherein one part of the stator winding is arranged in the stator slot, and one part of the stator slot is in contact with the stator core. The connecting piece passes through the assembly slot to fix the stator winding and the stop body, and further ensures the position stability between the stop piece and the stator core. In particular, the connecting piece is a binding tie.

In one possible design, further, the number of the positioning members is plural, the number of the fitting grooves is plural, and each of the plurality of fitting grooves is disposed between adjacent two of the plurality of positioning members.

In this design, the number of the positioning members is plural, and the number of the positioning members is equal to or less than the number of the stator slots. When the number of the positioning pieces is equal to that of the stator slots, one positioning piece is accommodated in each stator slot. When the quantity of setting element was less than the stator slot, then should ensure that setting element evenly distributed is on stator core and be located the constant head tank, can make the force that the whole applying of stop part on stator core more even like this, avoids certain department of stator core atress to concentrate and causes motor performance to influence. The number of the assembling grooves is multiple, one assembling groove is arranged between the two positioning pieces, and for the stopping body, the connecting piece penetrates through the assembling grooves to connect the stopping body and the stator winding and can provide acting force in the first direction for the stopping body. The locating piece matched with the notch of the stator slot can provide acting force in a second direction opposite to the first direction for the stop body, namely, the locating piece and the groove are uniformly stressed in two directions, so that the stop piece can be better fixed with the stator core and the stator winding.

According to a second aspect of the present invention, there is provided an electrical machine comprising a stator assembly as provided by any of the above-described designs.

The utility model provides a motor, including the stator module that any above-mentioned design provided, consequently have this stator module's whole beneficial effect, no longer describe here.

In one possible design, the motor further includes a rotor assembly disposed in the mounting opening of the stator assembly, the rotor assembly being rotatable relative to the stator assembly.

In one possible design, further, the rotor assembly includes a rotor core, an oil baffle, and a weight. The rotor core is arranged in the mounting opening, and the oil baffle plate is arranged on the axial end face, close to the stop piece, of the rotor core. The balance weight is arranged on the axial end face of the rotor core.

In this design, the oil baffle sets up on rotor core is close to the axial terminal surface of stop member, and the oil baffle can effectively block oil-gas mixture, prevents that the oil-gas mixture of large tracts of land from flowing to the axial terminal surface of rotor subassembly and arousing the sharply-increased of compressor oil mass. The balancing piece sets up on rotor core's axial terminal surface, and the balancing piece can reduce windage loss and noise reduction. Specifically, the balance blocks are provided at both axial ends of the rotor core.

According to the utility model discloses a third aspect provides a compressor, including the motor that any design provided above provided.

The utility model provides a compressor, including the motor that any above-mentioned design provided, consequently have the whole beneficial effect of this motor, no longer describe herein.

Further, the compressor includes the compression portion, and the compression portion sets up in the axial one side of motor, and the stop member is located stator core and deviates from one side of compression portion. Specifically, the compressor is a rotary compressor or a scroll compressor.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, 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:

figure 1 shows a schematic structural view of a stator assembly in an embodiment according to the present invention;

figure 2 shows a partial structural schematic view of a stator assembly in an embodiment in accordance with the invention;

fig. 3 shows a schematic view of a part of the structure of the motor according to an embodiment of the present invention;

fig. 4 shows a schematic view of a compressor according to an embodiment of the present invention;

fig. 5 is a graph showing a comparison between the oil discharge amount of the compressor according to the embodiment of the present invention and that of the related art;

fig. 6 is a graph showing a comparison of energy efficiency between an embodiment of the present invention and a compressor according to the related art.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 6 is:

100 a stator assembly of a motor-generator,

110 stator core, 111 mounting opening, 112 stator slot, 113 stator convex tooth,

120 stop member, 121 stop body, 122 positioning member, 123 fitting groove,

130 of the stator winding of the motor, and,

140 of the connecting elements are arranged in the connecting piece,

200 of the motor, and the motor is arranged,

210 rotor assembly, 211 rotor core, 212 oil baffle, 213 balance weight,

220 of the crankshaft, and a crankshaft,

300 of a compressor is set up in the compressor,

the housing 310, the cavity 311,

320 compression part, 321 main bearing, 322 cylinder, 323 piston, 324 auxiliary bearing.

Detailed Description

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

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

A stator assembly 100, a motor 200, and a compressor 300 provided according to some embodiments of the present invention are described below with reference to fig. 1 to 6.

Example one

According to a first aspect of the present invention, as shown in fig. 1 and 2, an embodiment of the present invention provides a stator assembly 100 for a motor 200, the stator assembly 100 including a stator core 110 and a stopper 120, the stator core 110 having a mounting opening 111 running through in an axial direction, the mounting opening 111 being used for assembling a rotor assembly 210 of the motor 200. The stopper 120 is disposed at an axial end of the stator core 110.

The utility model provides a stator module 100 includes stator core 110 and stop part 120, and stator core 110 piles up by a plurality of stator punching and constitutes, and the stator punching is made by silicon steel material. Wherein, the silicon steel is silicon alloy steel with 1.0-4.5% of silicon content and less than 0.08% of carbon content. Silicon steel has the characteristics of high magnetic permeability, low coercive force, large resistivity and the like, so that the ratio of hysteresis loss to eddy current loss is small. The stator core 110 has a mounting hole 111 axially penetrating therethrough, the mounting hole 111 is used to assemble a rotor assembly 210 of the motor 200, and the rotor assembly 210 is rotatable with respect to the stator assembly 100. In the process of high-speed rotation of the rotor assembly 210 of the motor 200, the rotor assembly 210 can drive the oil-gas mixture formed by the lubricating oil and the refrigerant to flow axially, when the oil-gas mixture flows to the end of the rotor assembly 210, the oil-gas mixture can be thrown to the periphery under the action of centrifugal force generated in the high-speed rotation process, the utility model discloses a stop member 120 is arranged at the axial end of the stator core 110, so as to stop the thrown oil-gas mixture, reduce the oil-gas mixture to be thrown to the shell 310 of the compressor 300 with the motor 200 as much as possible, further avoid the oil-gas mixture from being discharged to the outside through the exhaust port on the shell 310, thereby greatly reduce the oil discharge amount of the compressor 300, further improve the reliability of the compressor 300 and the energy efficiency of the compressor 300, specifically, the oil-gas mixture stopped by the stop member 120 can flow back to the oil groove of the compressor 300 again through the gap, therefore, the oil shortage of the compressor 300 can be avoided, the reliability risk of the compressor 300 is increased due to the fact that mechanical parts are severely rubbed when the compressor 300 is in the oil shortage state, meanwhile, the loss between the mechanical parts is increased, the torque is also increased, and the energy efficiency of the compressor 300 is directly reduced.

It should be noted that the stopper 120 may be an insulating member, the stopper 120 may contact the stator core 110, and the stopper 120 may also contact the stator winding 130 disposed on the stator core 110, and in order to ensure the insulating performance between the stator core 110 and the stator winding 130 in the stator assembly 100, the stopper 120 may be an insulating member, so that the structural design and assembly difficulty of the stopper 120 may be reduced. Of course, the stop member 120 may be a non-insulating member, which may have high requirements on the assembling position and the structural design of the stop member 120, and the insulating property between the stator core 110 and the stator winding 130 is also achieved on the premise of ensuring the effective installation of the stop member 120.

It is worth mentioning that the stopper 120 may be an integrated structure, so that the difficulty of manufacturing the stopper 120 may be reduced, and the overall structural strength of the stopper 120 may be ensured. Specifically, the stopper 120 may be integrally formed by injection molding.

Further, as shown in fig. 1 and 2, the stopper 120 extends in an axial direction away from the stator core 110.

In this embodiment, the stopper 120 has two axial ends, one axial end of the stopper 120 contacts with the stator core 110, the other axial end of the stopper 120 extends along the axial direction away from the stator core 110, that is, the axial height of the stopper 120 is increased, when the oil-gas mixture is thrown around under the effect of centrifugal force, the stopper 120 can better block the oil-gas mixture, so that most of the oil-gas mixture can be blocked by the stopper 120, and then the oil flows back to the oil groove of the compressor 300 again through the gap between the stator assembly 100 and the rotor assembly 210, so that the oil shortage of the compressor 300 can be avoided.

Further, as shown in fig. 1 and 2, the stopper 120 is disposed on the stator core 110 around the center line of the stator core 110.

In this embodiment, the stopper 120 is disposed on the stator core 110 around the center line of the stator core 110, i.e., the stopper 120 is disposed on the stator core 110 around the center axis of the mounting opening 111 as the center. Stop member 120 is the loop configuration around establishing on stator core 110, and when oil-gas mixture got rid of under the effect of centrifugal force to all around, stop member 120 can realize the all-round oil-gas mixture that blocks to make the oil-gas mixture of the overwhelming majority can be blockked by stop member 120, thereby flow back again to the oil groove of compressor 300 through stator module 100 and the clearance between rotor subassembly 210 in, thereby can avoid compressor 300 to lack oil.

Further, as shown in fig. 1 and 2, the inner diameter of the stopper 120 is equal to or greater than the inner diameter of the stator core 110.

In this embodiment, the inner diameter of the stopper 120 is equal to or greater than the inner diameter of the stator core 110, wherein the inside of the stator core 110 refers to the diameter of the mounting opening 111. When the stopper 120 has a ring-shaped structure, the inner diameter of the stopper 120 and the inner diameter of the stator core 110 satisfy the above relationship, so that the stopper 120 does not protrude into the mounting opening 111, and at this time, the rotor assembly 210 located in the mounting opening 111 does not interfere with the stopper 120 when rotating at a high speed.

It should be noted that the stopper 120 may not have a ring structure, and in this case, the stopper 120 does not protrude into the mounting opening 111.

Further, the stopper 120 is an insulator.

In this embodiment, the stopper 120 is an insulator, the stopper 120 may contact the stator core 110, and the stopper 120 may also contact the stator winding 130 disposed on the stator core 110, and in order to ensure the insulation performance between the stator core 110 and the stator winding 130 in the stator assembly 100, the stopper 120 may be an insulator, so that the structural design and assembly difficulty of the stopper 120 may be reduced.

Further, the stopper 120 is a unitary structure.

In this embodiment, the stopper 120 may be an integral structure, so that the difficulty of manufacturing the stopper 120 may be reduced, and the overall structural strength of the stopper 120 may be ensured. Specifically, the stopper 120 may be integrally formed by injection molding.

Example two

On the basis of the first embodiment, the specific structure of the stopper 120 is explained in the present embodiment, as shown in fig. 1 and fig. 2, further, the stator assembly 100 further includes a plurality of stator slots 112 uniformly arranged on the stator core 110, and each stator slot 112 is communicated with the mounting opening 111. The stopper 120 includes a stopper body 121 and at least one positioning member 122, and the stopper body 121 is disposed at an axial end of the stator core 110. At least one positioning member 122 is disposed on the wall surface of the stop body 121 near the stator core 110, and the positioning member 122 extends into the notch of the stator slot 112.

In this embodiment, the stator assembly 100 further includes a plurality of stator slots 112 disposed on the stator core 110, the plurality of stator slots 112 are uniformly spaced on the stator core 110, the plurality of stator cores 110 are all communicated with the mounting opening 111, the stator assembly 100 further includes a stator winding 130, a portion of the stator winding 130 is received in the stator slots 112, and a portion of the stator winding 130 is disposed on the stator core 110. The stop member 120 comprises a stop body 121 and a positioning member 122, the stop body 121 is arranged at the axial end of the stator core 110, the stop body 121 is used for stopping oil-gas mixture, when the oil-gas mixture is thrown to the four weeks under the action of centrifugal force, the oil-gas mixture can be directly thrown onto the stop body 121, the oil-gas mixture can be better stopped by the stop body 121, so that most of the oil-gas mixture can be stopped by the stop member 120, and the oil flows back to the oil groove of the compressor 300 again through the gap between the stator assembly 100 and the rotor assembly 210, so that the oil shortage of the compressor 300 can be avoided. Specifically, the stopper body 121 includes a wall surface that is close to the stator core 110 along the axial direction, the positioning element 122 is disposed on the wall surface, and the positioning element 122 can be inserted into the notch of the stator slot 112, so as to achieve reliable connection between the stopper 120 and the stator core 110, and the insertion manner is simple and reliable, and has low cost. Specifically, the number of the positioning members 122 is at least one, when the number of the positioning members 122 is plural, the positioning members 122 are uniformly distributed on the stopper body 121, and when the positioning members 122 are matched with the plurality of magnet slots, the reliable connection performance of the stopper 120 in all directions can be ensured. Specifically, the number of the stator slots 112 is equal to or greater than 9 and equal to or less than 48. It is worth noting that the portions of the stator core 110 located between adjacent stator slots 112 are stator teeth 113, and the stator teeth 113 can facilitate the positioning of the stator windings 130 on the stator core 110.

Further, the circumferential width of the positioning member 122 is greater than or equal to the width of the slot opening of the stator slot 112.

In this embodiment, the circumferential width of each positioning element 122 is greater than or equal to the width of the notch of the stator slot 112, so that the positioning element 122 and the notch of the stator slot 112 are in interference fit, when the stop member 120 is assembled on the stator core 110, the positioning element 122 and the stator slot 112 are in interference fit, on one hand, reliable connection performance between the positioning element and the notch can be ensured, on the other hand, reliable connection can be realized on the basis of no other connection structures, and the positioning element 122 and the stator slot 112 are low in cost and simple and convenient to operate.

Further, as shown in fig. 1 and 2, the stopper 120 further includes a fitting groove 123, and the fitting groove 123 is disposed on a wall surface of the stopper body 121 adjacent to the stator core 110, avoiding the positioning member 122. The stator assembly 100 further includes stator windings 130 and a connector 140, the stator windings 130 passing through the stator slots 112 and disposed on the stator core 110. The connection member 140 passes through the fitting groove 123 to fix the stator winding 130 with the stopper body 121.

In this embodiment, the wall surface of the stopper body 121 close to the stator core 110 is further provided with an assembling groove 123, and the assembling groove 123 is disposed on the stopper body 121 avoiding the positioning member 122. The stop body 121, the assembling groove 123 and the positioning member 122 are of an integral structure and can be realized through injection molding. Further, the stator assembly 100 further includes a stator winding 130 and a connector 140, a portion of the stator winding 130 is disposed within the stator slot 112, and a portion of the stator slot 112 is in contact with the stator core 110. The connection member 140 passes through the fitting groove 123 to fix the stator winding 130 and the stopper body 121, further ensuring positional stability between the stopper 120 and the stator core 110. Specifically, the connector 140 is a binding tie.

Further, as shown in fig. 1 and 2, the number of the positioning members 122 is plural, the number of the fitting grooves 123 is plural, and each of the plurality of fitting grooves 123 is disposed between adjacent two positioning members 122 of the plurality of positioning members 122.

In this embodiment, the number of the positioning members 122 is plural, and the number of the positioning members 122 is equal to or less than the number of the stator slots 112. When the number of the positioning elements 122 is equal to the number of the stator slots 112, one positioning element 122 is received in each stator slot 112. When the number of the positioning members 122 is smaller than that of the stator slots 112, it is ensured that the positioning members 122 are uniformly distributed on the stator core 110 and located in the positioning slots, so that the force applied to the stator core 110 by the whole stopper 120 is more uniform, and the performance of the motor 200 is prevented from being affected by the concentrated stress at a certain position of the stator core 110. The number of the assembly grooves 123 is plural, one assembly groove 123 is disposed between two positioning members 122, and for the stopper body 121, the connecting member 140 passes through the assembly groove 123 to connect the stopper body 121 and the stator winding 130, and the connecting member 140 can provide a force in the first direction to the stopper body 121. The positioning element 122 engaged with the slot opening of the stator slot 112 can provide a force in a second direction opposite to the first direction to the stopper body 121, that is, the positioning element 122 and the groove are engaged, and the force in the two directions is uniform, so that the stopper 120 can be better fixed with the stator core 110 and the stator winding 130.

EXAMPLE III

According to a second aspect of the present invention, there is provided an electrical machine 200 comprising a stator assembly 100 as provided by any of the above-described designs.

The utility model provides a motor 200, including the stator module 100 that any above-mentioned design provided, consequently have all beneficial effects of this stator module 100, no longer describe herein.

The utility model provides a stator module 100 includes stator core 110 and stop part 120, and stator core 110 piles up by a plurality of stator punching and constitutes, and the stator punching is made by silicon steel material. Wherein, the silicon steel is silicon alloy steel with 1.0-4.5% of silicon content and less than 0.08% of carbon content. Silicon steel has the characteristics of high magnetic permeability, low coercive force, large resistivity and the like, so that the ratio of hysteresis loss to eddy current loss is small. The stator core 110 has a mounting hole 111 axially penetrating therethrough, the mounting hole 111 is used to assemble a rotor assembly 210 of the motor 200, and the rotor assembly 210 is rotatable with respect to the stator assembly 100. In the process of high-speed rotation of the rotor assembly 210 of the motor 200, the rotor assembly 210 can drive the oil-gas mixture formed by the lubricating oil and the refrigerant to flow axially, when the oil-gas mixture flows to the end of the rotor assembly 210, the oil-gas mixture can be thrown to the periphery under the action of centrifugal force generated in the high-speed rotation process, the utility model discloses a stop member 120 is arranged at the axial end of the stator core 110, so as to stop the thrown oil-gas mixture, reduce the oil-gas mixture to be thrown to the shell 310 of the compressor 300 with the motor 200 as much as possible, further avoid the oil-gas mixture from being discharged to the outside through the exhaust port on the shell 310, thereby greatly reduce the oil discharge amount of the compressor 300, further improve the reliability of the compressor 300 and the energy efficiency of the compressor 300, specifically, the oil-gas mixture stopped by the stop member 120 can flow back to the oil groove of the compressor 300 again through the gap, therefore, the oil shortage of the compressor 300 can be avoided, the reliability risk of the compressor 300 is increased due to the fact that mechanical parts are severely rubbed when the compressor 300 is in the oil shortage state, meanwhile, the loss between the mechanical parts is increased, the torque is also increased, and the energy efficiency of the compressor 300 is directly reduced.

Further, as shown in fig. 3, the motor 200 further includes a rotor assembly 210, the rotor assembly 210 being disposed in the mounting opening 111 of the stator assembly 100, the rotor assembly 210 being capable of rotating relative to the stator assembly 100.

Further, as shown in fig. 3, the rotor assembly 210 includes a rotor core 211, an oil deflector 212, and a balance mass 213. The rotor core 211 is located in the mounting opening 111, and the oil deflector 212 is provided on an axial end surface of the rotor core 211 near the stopper 120. The weight 213 is provided on an axial end surface of the rotor core 211.

In this embodiment, the oil baffle 212 is disposed on the axial end surface of the rotor core 211 close to the stop member 120, and the oil baffle 212 can effectively block the oil-gas mixture, so as to prevent the oil-gas mixture flowing onto the axial end surface of the rotor assembly 210 in a large area from causing a sudden increase in the oil output of the compressor 300. The weight 213 is provided on an axial end surface of the rotor core 211, and the weight 213 can reduce windage loss and reduce noise. Specifically, the weights 213 are provided at both axial ends of the rotor core 211.

Further, the number of the stator windings 130 is at least three, and the connection ends of the three stator windings 130 are dispersedly disposed on the axial end surface of the motor 200 after the stator windings are scattered, the motor 200 further includes at least three outgoing lines, one end of each of the at least three outgoing lines is connected with the connection end of one of the stator windings 130, and the other end of the outgoing line is used for being connected with the connection terminal of the compressor 300.

In this embodiment, the motor 200 includes a stator core 110, at least three stator windings 130, and at least three lead-out wires. Specifically, the stator core 110 is formed by laminating a plurality of stator laminations. It is worth to be noted that the stator punching sheet can be made of silicon steel sheets with low iron loss and high magnetic induction. The stator winding 130 is disposed on the stator core 110. The number of the stator windings 130 is at least three, which is specifically selected according to the kind of the motor 200, and specifically, when the motor 200 is a three-phase motor 200, the number of the stator windings 130 is three. Each of the stator windings 130 has a connection end for electrical connection with the outgoing line, thereby realizing a current flowing in the stator winding 130. It should be noted that, when a stator winding 130 is formed by winding a copper wire, the connection end of the stator winding 130 is the free end of the copper wire. If one stator winding 130 is formed by winding two copper wires, the connection end of the stator winding 130 is the free end of the two copper wires. Specifically, when the number of the stator windings 130 is three, the three stator windings 130 are sequentially nested on the stator core 110 in a radial direction of the stator core 110. Specifically, each stator winding 130 is wound on the stator core 110 in the circumferential direction of the stator core 110. Further, the number of the connecting ends of the at least three stator windings 130 is at least three, and the at least three connecting ends are dispersedly disposed on the axial end face of the motor 200. It should be noted that the dispersed state means that at least three connection ends are dispersed and disposed at each position of the axial end surface of the motor 200, and the at least three connection ends are not collectively disposed. The motor 200 further includes outgoing lines, the number of which corresponds one-to-one to the number of the stator windings 130, i.e., one outgoing line corresponds to one stator winding 130, and for one outgoing line, one end of the outgoing line is electrically connected to the connection end of the stator winding 130, and the other end of the outgoing line can be connected to the connection terminal of the compressor 300. The utility model discloses a link dispersion setting with at least three stator winding 130 to can make the at least three lead-out wire of connection between binding post and link disperse stress better, each lead-out wire can form the contained angle with stator core 110's axial terminal surface this moment promptly, and the dispersion setting can make the contained angle that different lead-out wires formed vary at connecting portion everywhere, thereby can make the hookup location of lead-out wire be convenient for install, effectively improves the wiring degree of difficulty of lead-out wire, improves compressor 300's assembly efficiency.

It is worth noting that the connecting ends and the terminal ends of the stator winding 130 do not coincide in extension in the axial direction.

Example four

According to a third aspect of the present invention, as shown in fig. 4, there is provided a compressor 300 comprising the motor 200 provided by any one of the above designs.

The utility model provides a compressor 300, including the motor 200 that any design of the aforesaid provided, consequently have all beneficial effects of this motor 200, no longer describe herein.

The utility model provides a stator module 100 includes stator core 110 and stop part 120, and stator core 110 piles up by a plurality of stator punching and constitutes, and the stator punching is made by silicon steel material. Wherein, the silicon steel is silicon alloy steel with 1.0-4.5% of silicon content and less than 0.08% of carbon content. Silicon steel has the characteristics of high magnetic permeability, low coercive force, large resistivity and the like, so that the ratio of hysteresis loss to eddy current loss is small. The stator core 110 has a mounting hole 111 axially penetrating therethrough, the mounting hole 111 is used to assemble a rotor assembly 210 of the motor 200, and the rotor assembly 210 is rotatable with respect to the stator assembly 100. In the process of high-speed rotation of the rotor assembly 210 of the motor 200, the rotor assembly 210 can drive the oil-gas mixture formed by the lubricating oil and the refrigerant to flow axially, when the oil-gas mixture flows to the end of the rotor assembly 210, the oil-gas mixture can be thrown to the periphery under the action of centrifugal force generated in the high-speed rotation process, the utility model discloses a stop member 120 is arranged at the axial end of the stator core 110, so as to stop the thrown oil-gas mixture, reduce the oil-gas mixture to be thrown to the shell 310 of the compressor 300 with the motor 200 as much as possible, further avoid the oil-gas mixture from being discharged to the outside through the exhaust port on the shell 310, thereby greatly reduce the oil discharge amount of the compressor 300, further improve the reliability of the compressor 300 and the energy efficiency of the compressor 300, specifically, the oil-gas mixture stopped by the stop member 120 can flow back to the oil groove of the compressor 300 again through the gap, therefore, the oil shortage of the compressor 300 can be avoided, the reliability risk of the compressor 300 is increased due to the fact that mechanical parts are severely rubbed when the compressor 300 is in the oil shortage state, meanwhile, the loss between the mechanical parts is increased, the torque is also increased, and the energy efficiency of the compressor 300 is directly reduced. As shown in fig. 5 and 6, in the compressor 300 using the stator assembly 100, the oil discharge amount of the compressor 300 is reduced from 3.6% to 1.1% compared to the related art. However, the energy efficiency of the compressor 300 is increased from 210% to 221.3%, that is, the oil discharge amount of the compressor having the stator assembly 100 is significantly reduced, and the energy efficiency is significantly improved.

Further, as shown in fig. 4, the compressor 300 includes a compression part 320, the compression part 320 is disposed at one side of the motor 200 in the axial direction, and the stopper 120 is located at one side of the stator core 110 facing away from the compression part 320. The compressor 300 includes a housing 310, the housing 310 is formed with a cavity 311, the compression part 320 and the motor 200 are disposed in the housing 310, and the housing 310 may protect the compression part 320 and the motor 200 from external interference. Specifically, the compressor 300 is a rotary compressor 300 or a scroll compressor 300. Further, the compressing part 320 includes a cylinder 322 and a piston 323, the piston 323 is disposed in a compression cavity in the cylinder 322, the motor 200 further includes a crankshaft 220 moving synchronously with the rotor assembly 210, and the crankshaft 220 drives the piston 323 to move eccentrically in the cylinder 322. Further, the compressing portion 320 further includes a main bearing 321 and a sub-bearing 324, the main bearing 321 is disposed on the crankshaft 220 close to the motor 200, and the sub-bearing 324 is disposed on the crankshaft 220 away from the motor 200.

In the present application, the term "plurality" means two or more unless expressly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In 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. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (12)

1. A stator assembly for an electric machine, the stator assembly comprising:

the stator core is provided with a mounting hole which penetrates through the stator core along the axial direction, and the mounting hole is used for assembling a rotor assembly of the motor;

and a stopper disposed at an axial end of the stator core.

2. The stator assembly of claim 1,

the stop extends in an axial direction away from the stator core.

3. The stator assembly of claim 1,

the stopper is disposed on the stator core around a center line of the stator core.

4. The stator assembly of claim 3,

the inner diameter of the stop piece is larger than or equal to that of the stator core.

5. The stator assembly of claim 1,

the stop piece is an insulating piece;

the stop piece is of an integrated structure.

6. The stator assembly of any of claims 1-5,

the stator assembly further includes:

a plurality of stator slots uniformly arranged on the stator core, each stator slot being communicated with the mounting port;

the stopper includes:

the stop body is arranged at the axial end part of the stator core;

and the positioning piece is arranged on the wall surface of the stop body close to the stator core, and the positioning piece extends into the notch of the stator slot.

7. The stator assembly of claim 6,

the circumferential width of the positioning piece is larger than or equal to the width of the notch of the stator slot.

8. The stator assembly of claim 6,

the stopper further includes:

the assembling groove is arranged on the wall surface of the stopping body close to the stator core in a manner of avoiding the positioning piece;

the stator assembly further includes:

the stator winding penetrates through the stator slot and is arranged on the stator iron core;

a connector passing through the fitting groove to fix the stator winding with the stopper body.

9. The stator assembly of claim 8,

the number of the positioning pieces is multiple, the number of the assembly grooves is multiple, and each assembly groove in the multiple assembly grooves is arranged between two adjacent positioning pieces in the multiple positioning pieces.

10. An electric machine, comprising:

the stator assembly of any of claims 1-9; and

a rotor assembly disposed in the mounting opening of the stator assembly, the rotor assembly being rotatable relative to the stator assembly.

11. The electric machine of claim 10, wherein the rotor assembly comprises:

a rotor core;

the oil baffle plate is arranged on the axial end face, close to the stop piece, of the rotor iron core;

and the balance block is arranged on the axial end face of the rotor core.

12. A compressor, comprising: an electrical machine as claimed in claim 10 or 11.

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