CN213754119U - Stator, motor and household electrical appliance - Google Patents

Abstract

An embodiment of the utility model provides a stator, motor and tame electric installation. Wherein, the stator includes: the stator core comprises a plurality of stator teeth, and two adjacent stator teeth form a stator slot; an insulator disposed in a portion of the plurality of stator slots; a stator winding disposed on the insulator; the insulating part comprises a first insulating wall and a second insulating wall, the first insulating wall and the second insulating wall extend along the side wall of the stator slot, and the first insulating wall is higher than the second insulating wall along the axial direction of the stator core. Through setting up insulating part parcel stator winding, can make and realize insulating effect through the insulating part between stator winding and the stator yoke portion. Further, the first insulating wall is higher than the second insulating wall, so that the distance between the stator winding wrapped by the first insulating wall and the upper surface of the stator core in the axial direction meets the conventional creepage distance requirement.

Description

Stator, motor and household electrical appliance

Technical Field

The utility model belongs to the technical field of electrical equipment, particularly, relate to a stator, a motor and a household electrical appliances.

Background

At present, in the development process of a distributed winding single-phase asynchronous motor, in order to improve production efficiency, a stator core with separated tooth yokes is designed and developed in the related technology, and the new stator core structure is difficult to meet the conventional creepage distance requirement.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art or the correlation technique.

In view of this, the first aspect of the present invention provides a stator.

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

The third aspect of the present invention provides a home appliance.

An embodiment of the first aspect of the utility model provides a stator, the stator includes: the stator core comprises a plurality of stator teeth, and two adjacent stator teeth form a stator slot; an insulator disposed in a portion of the plurality of stator slots; a stator winding disposed on the insulator; the insulating part comprises a first insulating wall and a second insulating wall, the first insulating wall and the second insulating wall extend along the side wall of the stator slot, and the first insulating wall is higher than the second insulating wall along the axial direction of the stator core.

The utility model provides a stator includes stator core, insulating part and stator winding. The stator core comprises a plurality of stator teeth, two adjacent stator teeth form stator slots, and the arrangement of the insulators and the winding of the coils form the stator slots to provide an accommodating space. The insulating member is arranged in part of the stator slots in the plurality of stator slots, so that the coils wound in the corresponding stator slots can be insulated, electric leakage is prevented, and the use safety of the stator is further improved. To the disconnect-type stator, the stator structure of being connected can be dismantled with stator yoke portion to the stator tooth, and the opening of stator slot is towards stator yoke portion, therefore, after the coiling stator winding in the stator slot, on stator core's radial direction, through setting up insulating part parcel stator winding, can make and realize insulating effect through the insulating part between stator winding and the stator yoke portion, and then satisfy the conventional creepage distance requirement of disconnect-type stator. Further, the insulating part comprises a first insulating wall and a second insulating wall, the first insulating wall and the second insulating wall extend along the side wall of the stator slot, and in the axial direction of the stator core, because the first insulating wall is higher than the second insulating wall, the distance between the stator winding wrapped by the first insulating wall and the upper surface of the stator core in the axial direction meets the conventional creepage distance requirement, the phenomenon that the distance is too short is prevented, air in the distance is easily broken down by current, the insulating effect of the insulating part fails, and the split stator cannot meet the conventional safety requirement. The stator in this application is through setting up the insulating part in the stator slot to locate the insulating part with stator winding, and wrap up stator winding through the insulating part, reach insulating effect between stator winding and the stator yoke portion at the stator slot. Further, along stator core's axial, be higher than the second insulating wall through first insulating wall, can make the stator winding at first insulating wall place highly on the axial direction and the interval between the stator core upper surface satisfy conventional creepage distance requirement, for example, this interval is greater than 4mm, some insulating effect can be realized to the air in this interval, that is, be higher than the second insulating wall through first insulating wall, can increase the stator winding by the interval of insulating part parcel part between axial direction's highly and stator core upper surface, and then when having realized stator core axial insulation, has satisfied conventional creepage distance requirement again, can the wide application on the single-phase asynchronous machine of distributed winding, have universality and popularization meaning.

In addition, according to the utility model discloses above-mentioned technical scheme provides a stator, still has following additional technical characterstic:

in one possible design, the height of the first insulating wall is H1 and the height of the second insulating wall is H2 along the axial direction of the stator core, wherein 2mm ≦ H1-H2 ≦ 4.5 mm.

In the design, the value range of the height difference between the first insulating wall and the second insulating wall in the axial direction of the stator core is limited, specifically, the height of the first insulating wall is H1, the height of the second insulating wall is H2, and 2mm ≦ H1-H2 ≦ 4.5mm, so that the split stator can further meet the requirement of the conventional creepage distance. Specifically, the height of the second insulating wall may be flush with the surface of the stator core, or may be slightly lower than the surface of the stator core, and since the height difference between the first insulating wall and the second insulating wall is between 2mm and 4.5mm, that is, the height of the first insulating wall is higher than the height of the second insulating wall between 2mm and 4.5mm, the distance between the height of the stator winding in the axial direction where the first insulating wall is located and the upper surface of the stator core can meet the conventional creepage distance requirement, for example, the distance is greater than 4mm, and the air in the distance can achieve a part of insulating effect, that is, the first insulating wall is higher than the second insulating wall, the distance between the height of the stator winding in the axial direction where the stator winding is wrapped by the insulating member and the upper surface of the stator core can be increased, thereby achieving axial insulation of the stator core, and simultaneously meeting the conventional creepage distance requirement, the method can be widely applied to the distributed winding single-phase asynchronous motor, and has universality and popularization significance.

In detail, in the axial direction of the stator core, because the first insulating wall is higher than the second insulating wall, the distance between the stator winding wrapped by the first insulating wall and the upper surface of the stator core in the axial direction meets the conventional creepage distance requirement, and the short distance is prevented, so that the air in the distance is easily punctured by current, the insulation effect of the insulation part fails, and the split stator cannot meet the conventional safety requirement. The insulating part is arranged in the stator slot, the stator winding is arranged on the insulating part, and the stator winding is wrapped by the insulating part, so that an insulating effect is achieved between the stator winding and the stator yoke part in the stator slot. Further, along the axial of stator core, through first insulating wall higher than the second insulating wall to specifically limited the difference in height between first insulating wall and the second insulating wall, can further make the stator winding of being located by first insulating wall parcel satisfy conventional creepage distance requirement with the interval between the stator core upper surface in the axial direction, guarantee the safety in utilization of the motor that possesses this stator.

In a possible design, the first insulating wall includes a first bending section, the free end of the first insulating wall bends to one side where the second insulating wall is located to form the first bending section, the second insulating wall includes a second bending section, the free end of the second insulating wall bends to one side where the first insulating wall is located to form the second bending section, and the first bending section and the second bending section can be bent to wrap the stator winding.

In this design, it has been limited that first bending section and second bending section can buckle in order to wrap up stator winding, specifically, first bending section and second bending section buckle to the one side at the stator slot place that insulating part is located to wrap up stator winding. In detail, to the disconnect-type stator, the stator structure of being connected can be dismantled with stator yoke portion to the stator tooth, and the opening of stator slot is towards stator yoke portion, therefore, after stator winding is coiled in the stator slot, in stator core's radial direction, through setting up insulating part parcel stator winding, can make and realize insulating effect through the insulating part between stator winding and the stator yoke portion, and then satisfy the conventional creepage distance requirement of disconnect-type stator. Further, in the axial direction of the stator core, because the first insulating wall is higher than the second insulating wall, the distance between the stator winding wrapped by the first insulating wall and the upper surface of the stator core in the axial direction meets the conventional creepage distance requirement, the distance is prevented from being too short, and then air in the distance is easy to be punctured by current, so that the insulating effect of the insulating part fails, and the split stator cannot meet the conventional safety requirement. The stator winding is wrapped by the insulating member to achieve an insulating effect between the stator winding and the stator yoke in the stator slot. Further, along stator core's axial, be higher than the second insulating wall through first insulating wall, can make the stator winding at first insulating wall place highly on the axial direction and the interval between the stator core upper surface satisfy conventional creepage distance requirement, for example, this interval is greater than 4mm, some insulating effect can be realized to the air in this interval, that is, be higher than the second insulating wall through first insulating wall, can increase the stator winding by the interval of insulating part parcel part between axial direction's highly and stator core upper surface, and then when having realized stator core axial insulation, has satisfied conventional creepage distance requirement again, can the wide application on the single-phase asynchronous machine of distributed winding, have universality and popularization meaning.

The winding of the stator winding can be achieved through the tool, and the first bending section and the second bending section are bent through setting and completing the tool.

In one possible design, the plurality of stator teeth includes: a plurality of first stator teeth including a first bent portion; the stator comprises a plurality of second stator teeth, wherein two adjacent first stator teeth are located on two sides of one second stator tooth in the plurality of second stator teeth along the circumferential direction of a stator core, the first bending parts of the two adjacent first stator teeth located on two sides of the one second stator tooth are bent in the direction of keeping away from the one second stator tooth, the first stator teeth and the second stator teeth form first stator grooves, and an insulating piece is arranged in the first stator grooves.

In this design, a plurality of stator teeth include a plurality of first stator teeth to a plurality of first stator teeth include first kink, make the relative distance between the stator teeth change, and then changed the stator slot space size between the stator teeth, thereby changed the winding space of coil, can select the relative great kink position winding coil in the slot space between the stator teeth, the winding of being convenient for, easy operation is swift. The plurality of stator teeth further comprise a plurality of second stator teeth, and two adjacent first stator teeth are located on two sides of one second stator tooth in the plurality of second stator teeth along the circumferential direction of the stator core, so that the first stator teeth located on two sides of the second stator teeth are symmetrically distributed with the second stator teeth, and an insulating piece is uniformly arranged between the two adjacent first stator teeth and the second stator teeth which take the second stator teeth as a symmetry axis. The first bending parts of two adjacent first stator teeth positioned on two sides of one second stator tooth are far away from the direction bending of the second stator tooth, the first stator tooth and the second stator tooth form a first stator groove, the insulating part is arranged in the first stator groove, namely, the first bending parts of the two adjacent first stator teeth which are symmetrical relative to the second stator tooth are bent away from the second stator tooth, the two adjacent first stator teeth are symmetrical relative to the second stator tooth and form the first stator grooves respectively, namely, the insulating part is arranged in the first stator groove formed between the first stator teeth and the second stator teeth in the plurality of stator grooves, and therefore the insulation of the stator winding arranged in the first stator groove is achieved.

In a possible design, an included angle alpha is formed between a plane of the first bending section in the axial direction of the stator core and a plane of the side wall of the first stator slot on the side of the first insulating wall, and the included angle alpha is more than or equal to 0 degree and less than or equal to 45 degrees.

In this design, the angle of buckling of first bending segment has been injectd, particularly, buckle to one side at second insulating wall place through the free end at first insulating wall, can form first bending segment, and specifically the value range of the angle of buckling has been injectd, in detail, first bending segment forms contained angle alpha between the plane at the plane of place and the first stator groove's of first insulating wall place side the plane at stator core axial direction and satisfies, 0 is no less than or equal to alpha 45, thereby can be convenient for stator winding to carry out the wire winding, and after the coil winding, buckle first bending segment, can wrap up stator winding, realize the insulating effect of insulating part, guarantee the safety in utilization of the motor that possesses this stator.

In detail, the bending angle of the first bending section is limited mainly by the size of the winding opening of the stator winding, and the winding bending angle is too large, namely the winding opening is smaller, so that the winding difficulty of the stator winding is improved, and the assembly efficiency of the stator is reduced. Further, if the angle of buckling is many little, the opening that is used for the wire winding is great, though can improve stator winding's wire winding speed, nevertheless after the coil coiling, be unfavorable for buckling first bending segment, consequently, through the angle of buckling of injecing first bending segment, can be when realizing insulating effect of insulating part, the winding of the stator winding of being convenient for improves the assembly efficiency of stator.

In a possible design, an included angle beta is formed between a plane of the second bending section along the axial direction of the stator core and a plane of the side wall of the first stator slot on the side of the second insulating wall, wherein the included angle beta is more than or equal to 0 degree and less than or equal to 45 degrees.

In this design, the angle of buckling of second bending segment has been injectd, particularly, through the lateral buckling at the free end at second insulating wall to first insulating wall place, can form the second bending segment, and specifically the value range of the angle of buckling of second bending segment has been injectd, in detail, second bending segment is followed and is formed contained angle beta between the plane at the first stator groove's of stator core axial direction upper place plane and second insulating wall place side the plane at lateral wall place and satisfy, beta is more than or equal to 0 ≦ 45, thereby can be convenient for stator winding to carry out the wire winding, and after the coil winding, buckle the second bending segment, can wrap up stator winding, realize the insulating effect of insulating part, guarantee the safety in utilization of the motor that possesses this stator.

In detail, the bending angle of the second bending section is limited mainly by the size of the winding opening of the stator winding, and the winding bending angle is too large, namely the winding opening is smaller, so that the winding difficulty of the stator winding is improved, and the assembly efficiency of the stator is reduced. Further, if the angle of buckling is many little, the opening that is used for the wire winding is great, though can improve stator winding's wire winding speed, nevertheless after the coil coiling, be unfavorable for buckling the second bending segment, consequently, through the angle of buckling of injecing the second bending segment, can be when realizing insulating effect of insulating part, the stator winding's of being convenient for coiling improves the assembly efficiency of stator.

In one possible design, the side of the insulator adjacent to the second stator tooth is the first insulating wall.

In this design, be first insulating arm through the one side of injecing the insulating part and being close to the second stator tooth, then be close to one side of first stator tooth and be second insulating arm, the insulating wall that is close to one side of second stator tooth is higher than the insulating wall that is close to one side of first stator tooth promptly, thereby accomplish the back with the stator winding coiling, with the one side bending at first stator groove place of first bending section and second bending section in order to include stator winding, can be convenient for the frock once only buckle first kink and second kink in order to wrap up stator winding, assembly efficiency is improved.

In one possible design, the first stator tooth further includes a second bend, and the plurality of stator teeth further includes: and the second bending parts in the two adjacent first stator teeth on two sides of the second stator tooth are bent in the direction of keeping away from the third stator tooth.

In the design, the second bending part is arranged through the first stator tooth, so that the winding space of the coil is changed, and the winding of the coil with different layers can be realized. Particularly, due to the fact that the first bending part and the second bending part are arranged, the relative distance between the stator teeth can be changed, the size of the groove space between the stator teeth is changed, the winding space of the coil is changed, the winding coil can be wound at the bending part position with the relatively large groove space between the stator teeth, winding is facilitated, and operation is simple and fast. And the arrangement of different bending parts can realize the staggered utilization of the slot space between the stator teeth, thereby being convenient for winding the coil and simultaneously improving the utilization rate of the slot space. Further, the coil of the first winding may be wound around the first bent portion of the first stator tooth, and the coil of the second winding may be wound around the second bent portion of the first stator tooth. The plurality of stator teeth further comprise a plurality of third stator teeth, and along the circumferential direction of the stator core, two adjacent first stator teeth are positioned on two sides of one third stator tooth in the plurality of third stator teeth, so that the first stator teeth positioned on two sides of the third stator teeth are symmetrically distributed with the third stator teeth, and meanwhile, one second stator tooth and one third stator tooth are positioned on two sides of the first stator teeth respectively, so that uniform and regular distribution is realized, and when the insulating part is mounted, the winding of the coil is facilitated. The second bending parts of two adjacent first stator teeth on two sides of one second stator tooth are bent in the direction of being away from one third stator tooth, namely the second bending parts of two adjacent first stator teeth are bent in the direction of being close to the second stator tooth and are symmetrical relative to the second stator tooth, so that the adjacent first stator slots are uniformly distributed by taking the second stator tooth as symmetry, and the insulation part can be conveniently installed. Through the even regular distribution of first stator tooth, second stator tooth and third stator tooth to set up first kink and second kink on first stator tooth, when realizing being convenient for install the insulating part, the space that the first stator tooth kink of make full use of provided again, as far as possible increase the number of turns of coil, promote magnetic induction intensity, promote the motor performance.

In one possible design, the third stator tooth and the first stator tooth form second stator slots, and two adjacent second stator slots are symmetrically arranged along a central line of the third stator tooth.

In the design, through the arrangement of the third stator teeth and the first stator teeth, the second stator slots can be formed between the third stator teeth and the first stator teeth, and the two connected second stator slots are symmetrical along the center line of the third stator teeth along the third stator slots, so that the regular distribution of the first stator teeth and the third stator teeth is realized, and the production is easy.

In one possible design, the stator winding includes: the first stator winding is wound on two adjacent first stator teeth, and one third stator tooth in the stator core is positioned in the winding area of the first stator winding; and the second stator winding is wound on two adjacent first stator teeth, and one second stator tooth in the stator core is positioned in the surrounding area of the second stator winding.

In the design, the winding positions of the first winding and the second winding fully utilize the space provided by the bending part, and convenience is provided for the winding process of the asynchronous motor. The first stator winding is wound on two adjacent first stator teeth, and one third stator tooth in the stator core is positioned in the winding area of the first stator winding; the second stator winding is wound on two adjacent first stator teeth, one second stator tooth in the stator core is located in the surrounding area of the second stator winding, the stator slot space between the stator teeth can be utilized in a layered and staggered mode, the winding coil is wound, the number of turns of the coil is increased, the magnetic induction intensity is improved, meanwhile, the winding operation is facilitated, and the space utilization rate is improved.

The first stator winding is wound, and after the first stator winding is wound, the first bending part and the second bending part are respectively bent towards one side where the first stator slot is located so as to wrap the first stator winding. Further, the second stator winding is wound after the first stator winding is wound.

In one possible design, the stator core further includes: and a stator yoke on which a plurality of stator teeth are separably disposed.

In this design, through setting up stator yoke portion to the separable setting of a plurality of stator teeth can realize the dismouting of stator tooth and stator yoke portion, through the structure with stator tooth and stator yoke portion adoption detachable, thereby realizes stator winding's outside wire winding, reduces the wire winding degree of difficulty, and then the assembly efficiency who improves realizes the automatic assembly production of stator.

In one possible design, the stator further comprises: a first insulating frame; the second insulating frame is detachably connected with the first insulating frame, the first insulating frame and the second insulating frame form a mounting cavity, and one part of the stator core is arranged in the mounting cavity; the first bending section and the second bending section are exposed out of the first insulating frame and the second insulating frame.

In the design, the stator further comprises a first insulating frame and a first insulating frame, and the first insulating frame and the second insulating frame are adaptive in size and shape and are matched for use. Wherein, first insulating frame is connected with second insulating frame detachably installation, and first insulating frame forms the installation cavity with the insulating frame of second, and the stator core of being convenient for installs in the installation cavity to insulate stator core, and prevent the stator core electric leakage, realized the security that stator core used. The first bending section and the second bending section are exposed out of the first insulating frame and the second insulating frame, so that after the stator winding is wound, the stator winding is wrapped through bending of the first bending section and the second bending section, the stator winding is insulated from the stator yoke portion, and the distance between the axial direction height of the stator core and the upper surface of the stator core of the first insulating wall meets the requirement of the conventional creepage distance.

A part of the stator core is disposed in the mounting cavity, that is, a part of the stator teeth is exposed out of the first insulating frame and the second insulating frame, so that the stator teeth and the stator yoke can be mounted in a detachable manner.

The utility model discloses an aspect of the embodiment provides a motor, include as above-mentioned arbitrary technical scheme's stator, and then possess whole beneficial effect of this stator, no longer describe here.

The utility model provides a motor owing to contain above-mentioned stator, consequently in the actual production process, can utilize earlier and set up the insulating part with the first stator inslot between first stator tooth and the second stator tooth, at the kink that utilizes first stator tooth, the winding coil can make winding coil insulation in corresponding stator slot, prevents the electric leakage, further improves the security that the stator used. Furthermore, the first insulating wall and the second insulating wall of the insulating part extend along the side wall of the stator slot and along the axial direction of the stator core, and the first insulating wall is higher than the second insulating wall, so that the axial insulation of the stator core is realized, the conventional creepage distance requirement is met, the insulating part can be widely applied to the distributed winding single-phase asynchronous motor, and the insulating part has universality and popularization significance.

An embodiment of the third aspect of the utility model provides a household electrical appliance, include the motor as above-mentioned technical scheme, and then possess whole beneficial effect of this motor, no longer describe here.

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

Drawings

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

fig. 1 shows a schematic structural view of a stator according to an embodiment of the invention;

fig. 2 shows a schematic structural view of a stator according to another embodiment of the invention;

fig. 3 shows a schematic structural view of a stator according to yet another embodiment of the present invention;

fig. 4 shows a schematic structural view of a stator according to a further embodiment of the invention;

fig. 5 shows a schematic structural view of an insulator according to an embodiment of the invention;

fig. 6 shows a schematic structural view of an insulator according to another embodiment of the present invention;

fig. 7 shows a schematic structural view of an insulating member according to yet another embodiment of the present invention;

fig. 8 shows a schematic structural view of an insulating member according to yet another embodiment of the present invention;

fig. 9 shows a schematic structural view of an insulating member according to yet another embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 9 is:

111 first stator tooth, 112 second stator tooth, 113 third stator tooth, 114 first stator slot, 115 second stator slot, 121 insulation, 1210 first insulation wall, 1211 second insulation wall, 1212 first bend section, 1213 second bend section, 130 first stator winding.

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, a motor, and a home appliance provided according to some embodiments of the present invention are described below with reference to fig. 1 to 9.

The first embodiment is as follows:

as shown in fig. 1, 2, 3 and 4, an embodiment of the first aspect of the present invention provides a stator, including: the stator core comprises a plurality of stator teeth, and two adjacent stator teeth form a stator slot; an insulator 121 disposed in a part of the plurality of stator slots; a stator winding provided on the insulator 121; the insulating member 121 includes a first insulating wall 1210 and a second insulating wall 1211, the first insulating wall 1210 and the second insulating wall 1211 extend along the side wall of the stator slot, and the first insulating wall 1210 is higher than the second insulating wall 1211 along the axial direction of the stator core.

The utility model provides a stator includes stator core, insulating part and stator winding. Wherein the stator core includes a plurality of stator teeth, and two adjacent stator teeth form a stator slot, and the arrangement of the insulator 121 and the winding of the coil of the stator slot provide a mounting space. The insulating member 121 is disposed in a part of the plurality of stator slots, and can insulate the coils wound in the corresponding stator slots, thereby preventing leakage of electricity and further improving safety in use of the stator. The stator winding is arranged on the insulating part, namely the insulating part 121 is firstly installed, then the stator winding is installed, and the stator winding is wrapped by the insulating part 121 to play an insulating protection role. To disconnect-type stator, the stator structure of being connected can be dismantled with stator yoke portion to the stator tooth, and the opening of stator slot is towards stator yoke portion, therefore, after the coiling stator winding in the stator slot, on stator core's radial direction, through setting up insulating part 121 parcel stator winding, can make and realize insulating effect through insulating part 121 between stator winding and the stator yoke portion, and then satisfy the conventional creepage distance requirement of disconnect-type stator. Further, the insulation member 121 includes a first insulation wall 1210 and a second insulation wall 1211, the first insulation wall 1210 and the second insulation wall 1211 extend along the side wall of the stator slot, in the axial direction of the stator core, since the first insulation wall 1210 is higher than the second insulation wall 1211, the distance between the stator winding wrapped by the first insulation wall 1210 and the upper surface of the stator core in the axial direction meets the conventional creepage distance requirement, and if the distance is prevented from being too short, air in the distance is easily broken down by current, so that the insulation effect of the insulation member 121 fails, and the split stator cannot meet the conventional safety requirement. The stator in this application is through setting up insulating part 121 in the stator slot to locate the insulating part with stator winding, and wrap up stator winding through insulating part 121, reach insulating effect between stator winding and the stator yoke portion in the stator slot. Further, along the axial direction of the stator core, the first insulation wall 1210 is higher than the second insulation wall 1211, so that the distance between the height of the stator winding where the first insulation wall 1210 is located in the axial direction and the upper surface of the stator core can meet the conventional creepage distance requirement, for example, the distance is larger than 4mm, and a part of insulation effect can be achieved by air in the distance, that is, the distance between the height of the stator winding in the axial direction and the upper surface of the stator core, which is wrapped by the insulation member 121, can be increased by the first insulation wall 1210 being higher than the second insulation wall 1211, so that the axial insulation of the stator core is achieved, the conventional creepage distance requirement is met, and the stator core can be widely applied to a distributed winding single-phase asynchronous motor and has universality and popularization significance.

Example two:

as shown in fig. 5, 6, 7, 8 and 9, in the first embodiment, the height of the first insulating wall 1210 is H1, and the height of the second insulating wall 1211 is H2, wherein 2mm ≦ H1-H2 ≦ 4.5mm, along the axial direction of the stator core.

In these embodiments, the range of the height difference between the first insulating wall 1210 and the second insulating wall 1211 in the axial direction of the stator core is defined, specifically, the height of the first insulating wall 1210 is H1, the height of the second insulating wall 1211 is H2, and 2mm ≦ H1-H2 ≦ 4.5mm, and the split stator can further satisfy the conventional creepage distance requirement. Specifically, the height of the second insulating wall 1211 may be even with the surface of the stator core or slightly lower than the surface of the stator core, and since the height difference between the first insulating wall 1210 and the second insulating wall 1211 is between 2mm and 4.5mm, that is, the height of the first insulating wall 1210 is higher than the height of the second insulating wall 1211 is between 2mm and 4.5mm, the distance between the height of the stator winding where the first insulating wall 1210 is located in the axial direction and the upper surface of the stator core can meet the conventional creepage distance requirement, for example, the distance is greater than 4mm, air in the distance can achieve a part of insulating effect, that is, the distance between the height of the portion of the stator winding wrapped by the insulating member 121 in the axial direction and the upper surface of the stator core can be increased by the first insulating wall 1210 being higher than the second insulating wall 1211, so as to achieve axial insulation of the stator core, the method meets the conventional creepage distance requirement, can be widely applied to the distributed winding single-phase asynchronous motor, and has universality and popularization significance.

In detail, in the axial direction of the stator core, since the first insulating wall 1210 is higher than the second insulating wall 1211, the distance between the stator winding wrapped by the first insulating wall 1210 and the upper surface of the stator core in the axial direction meets the conventional creepage distance requirement, and if the distance is prevented from being too short, air in the distance is easily broken down by current, so that the insulating effect of the insulator 121 fails, and the split stator cannot meet the conventional safety requirement. The insulation member 121 is arranged in the stator slot, the stator winding is arranged on the insulation member, and the insulation member 121 wraps the stator winding, so that an insulation effect is achieved between the stator winding and the stator yoke in the stator slot. Further, along the axial direction of the stator core, the first insulation wall 1210 is higher than the second insulation wall 1211, and the height difference between the first insulation wall 1210 and the second insulation wall 1211 is specifically defined, so that the distance between the stator winding wrapped by the first insulation wall 1210 and the upper surface of the stator core in the axial direction can further meet the conventional creepage distance requirement, and the use safety of the motor with the stator is ensured.

As shown in fig. 6, in some embodiments, the first insulating wall 1210 includes: a first bending section 1212, a free end of the first insulating wall 1210 being bent toward a side where the second insulating wall 1211 is located to form the first bending section 1212, the second insulating wall 1211 includes: a second bent section 1213, a free end of the second insulating wall 1211 is bent toward a side where the first insulating wall 1210 is located to form the second bent section 1213, wherein the first bent section 1212 and the second bent section 1213 can be bent to wrap the stator winding.

In these embodiments, it is defined that the first bending section 1212 and the second bending section 1213 can be bent to wrap the stator winding, and specifically, the first bending section 1212 and the second bending section 1213 are bent to a side of the stator slot where the insulating member 121 is located, so as to wrap the stator winding. In detail, to the disconnect-type stator, the stator structure that the connection can be dismantled with stator yoke portion to the stator tooth, the opening of stator slot is towards stator yoke portion, therefore, after the coiling stator winding in the stator slot, in stator core's radial direction, including stator winding through setting up insulating part 121, can be so that realize insulating effect through insulating part 121 between stator winding and the stator yoke portion, and then satisfy the conventional creepage distance requirement of disconnect-type stator. Further, in the axial direction of the stator core, since the first insulating wall 1210 is higher than the second insulating wall 1211, the distance between the stator winding wrapped by the first insulating wall 1210 and the upper surface of the stator core in the axial direction meets the conventional creepage distance requirement, and if the distance is prevented from being too short, air in the distance is easily broken down by current, so that the insulating effect of the insulating member 121 fails, and the split stator cannot meet the conventional safety requirement. The stator windings are wrapped by insulation 121 to provide insulation between the stator windings and the stator yoke sections within the stator slots. Further, along the axial direction of the stator core, the first insulation wall 1210 is higher than the second insulation wall 1211, so that the distance between the height of the stator winding where the first insulation wall 1210 is located in the axial direction and the upper surface of the stator core can meet the conventional creepage distance requirement, for example, the distance is larger than 4mm, and a part of insulation effect can be achieved by air in the distance, that is, the distance between the height of the stator winding in the axial direction and the upper surface of the stator core, which is wrapped by the insulation member 121, can be increased by the first insulation wall 1210 being higher than the second insulation wall 1211, so that the axial insulation of the stator core is achieved, the conventional creepage distance requirement is met, and the stator core can be widely applied to a distributed winding single-phase asynchronous motor and has universality and popularization significance.

The winding of the stator winding can be achieved through the tool, and the first bending section 1212 and the second bending section 1213 are bent through setting the tool.

As shown in fig. 1, 2 and 3, in some embodiments, the plurality of stator teeth comprises: a plurality of first stator teeth 111 including a first bent portion; the plurality of second stator teeth 112 are arranged along the circumferential direction of the stator core, two adjacent first stator teeth 111 are located on two sides of one second stator tooth 112 of the plurality of second stator teeth 112, first bent portions of two adjacent first stator teeth 111 located on two sides of the one second stator tooth 112 are bent in a direction away from the one second stator tooth 112, the first stator teeth 111 and the second stator teeth 112 form a first stator slot 114, and the insulating member 121 is arranged in the first stator slot 114.

In the embodiments, the plurality of stator teeth include a plurality of first stator teeth 111, and the plurality of first stator teeth 111 include a first bending portion, so that the relative distance between the stator teeth can be changed, and further, the size of the stator slot space between the stator teeth can be changed, and thus, the winding space of the coil can be changed. The plurality of stator teeth further include a plurality of second stator teeth 112, and along the circumferential direction of the stator core, two adjacent first stator teeth 111 are located on two sides of one second stator tooth 112 of the plurality of second stator teeth 112, so that the first stator teeth 111 located on two sides of the second stator tooth 112 are symmetrically distributed with the second stator tooth 112, and the insulators 121 are uniformly arranged between the two adjacent first stator teeth 111 and the second stator tooth 112 with the second stator tooth 112 as a symmetry axis. The first bent parts of two adjacent first stator teeth 111 positioned on two sides of one second stator tooth 112 are bent in a direction away from the one second stator tooth 112, the first stator teeth 111 and the second stator tooth 112 form first stator slots 114, and the insulating member 121 is arranged in the first stator slots 114, that is, the first bent parts of two adjacent first stator teeth 111 symmetrical relative to the second stator tooth 112 are bent away from the second stator tooth 112, and the two adjacent first stator teeth 111 are symmetrical with the second stator tooth 112 and respectively form the first stator slots 114, that is, the insulating member 121 is arranged in the first stator slots 114 formed between the first stator teeth 111 and the second stator teeth 112 in a plurality of stator slots, so as to realize insulation for stator windings arranged in the first stator slots 114.

In a specific embodiment, further, an included angle α between a plane of the first bent segment 1212 along the axial direction of the stator core and a plane of the side wall of the first stator slot 114 on the side of the first insulating wall 1210 is satisfied, where α is greater than or equal to 0 ° and less than or equal to 45 °.

In these embodiments, the bending angle of the first bending section 1212 is defined, specifically, the first bending section 1212 can be formed by bending the free end of the first insulating wall 1210 to the side where the second insulating wall 1211 is located, and the value range of the bending angle is defined specifically, in detail, an included angle α between a plane where the first bending section 1212 is located along the axial direction of the stator core and a plane where the side wall of the first stator slot 114 on the side where the first insulating wall 1210 is located satisfies, where α is greater than or equal to 0 ° and less than or equal to 45 °, so that the stator winding can be conveniently wound, and after the coil is wound, the first bending section 1212 is bent, so that the stator winding can be wrapped, the insulating effect of the insulating member 121 is achieved, and the use safety of the motor having the stator is ensured.

In detail, the bending angle of the first bending section 1212 is mainly defined as the size of the winding opening of the stator winding, and the winding bending angle is too large, that is, the opening for winding is small, so that the winding difficulty of the stator winding is improved, and the assembly efficiency of the stator is reduced. Further, if the bending angle is too small, that is, the opening for winding is large, although the winding speed of the stator winding can be improved, after the coil is wound, the first bending section 1212 is not beneficial to bending, therefore, the bending angle of the first bending section 1212 is limited, so that the insulation effect of the insulating part 121 can be realized, the winding of the stator winding is facilitated, and the assembly efficiency of the stator is improved.

In another specific embodiment, further, an included angle β between a plane of the second bent section 1213 along the axial direction of the stator core and a plane of the side wall of the first stator slot 114 on the side of the second insulating wall 1211 satisfies 0 ° ≦ β ≦ 45 °.

In these embodiments, the bending angle of the second bending section 1213 is defined, specifically, the second bending section 1213 can be formed by bending the free end of the second insulating wall 1211 to the side of the first insulating wall 1210, and specifically, the value range of the bending angle of the second bending section 1213 is defined, specifically, the included angle β between the plane of the second bending section 1213 in the axial direction of the stator core and the plane of the side wall of the first stator slot 114 on the side of the second insulating wall 1211 is satisfied, and 0 ° ≦ β

45 to can be convenient for stator winding to wire, and the coil winding back, buckle second bending segment 1213, can wrap up stator winding, realize insulating part 121's insulating effect, guarantee the safe in utilization of the motor that possesses this stator.

In detail, the bending angle of the second bending section 1213 is mainly limited to the size of the winding opening of the stator winding, and the winding bending angle is too large, i.e. the opening for winding is small, so that the winding difficulty of the stator winding is improved, and the assembly efficiency of the stator is reduced. Further, if the bending angle is small, that is, the opening for winding is large, although the winding speed of the stator winding can be increased, after the coil is wound, the second bending section 1213 is not beneficial to bending, so that the winding of the stator winding is facilitated while the insulating effect of the insulating part 121 is realized by limiting the bending angle of the second bending section 1213, and the assembly efficiency of the stator is increased.

As shown in fig. 3, in some embodiments, the side of insulator 121 adjacent to second stator tooth 112 is a first insulating wall 1210.

In these embodiments, by defining that a side of the insulating member 121 close to the second stator tooth 112 is a first insulating arm, and a side close to the first stator tooth 111 is a second insulating arm, that is, an insulating wall of a side close to the second stator tooth 112 is higher than an insulating wall of a side close to the first stator tooth 111, so that when the stator winding is completely wound, and a side where the first stator slot 114 is located of the first bending section 1212 and the second bending section 1213 is bent to include the stator winding, the tool can be facilitated to bend the first bending portion and the second bending portion at one time to wrap the stator winding, thereby improving the assembly efficiency.

Example three:

as shown in fig. 3, in addition to any of the above embodiments, the first stator tooth 111 further includes a second bent portion, and the plurality of stator teeth further includes: and a plurality of third stator teeth 113, along the circumferential direction of the stator core, two adjacent first stator teeth 111 are located on two sides of one third stator tooth 113 of the plurality of third stator teeth 113, one second stator tooth 112 and one third stator tooth 113 are located on two sides of the first stator tooth 111, and second bent parts of two adjacent first stator teeth 111 located on two sides of the one second stator tooth 112 are bent in a direction away from the one third stator tooth 113.

In these embodiments, by providing the second bent portion through the first stator tooth 111, the winding space of the coil is changed and winding of the coil at different levels can be achieved. Particularly, due to the fact that the first bending part and the second bending part are arranged, the relative distance between the stator teeth can be changed, the size of the groove space between the stator teeth is changed, the winding space of the coil is changed, the winding coil can be wound at the bending part position with the relatively large groove space between the stator teeth, winding is facilitated, and operation is simple and fast. And the arrangement of different bending parts can realize the staggered utilization of the slot space between the stator teeth, thereby being convenient for winding the coil and simultaneously improving the utilization rate of the slot space. Further, the coil of the first winding may be wound around the first bent portion of the first stator tooth 111, and the coil of the second winding may be wound around the second bent portion of the first stator tooth 111. The plurality of stator teeth further comprise a plurality of third stator teeth 113, and along the circumferential direction of the stator core, two adjacent first stator teeth 111 are positioned on two sides of one third stator tooth 113 of the plurality of third stator teeth 113, so that the first stator teeth 111 positioned on two sides of the third stator tooth 113 are symmetrically distributed with the third stator tooth 113, and meanwhile, one second stator tooth 112 and one third stator tooth 113 are respectively positioned on two sides of the first stator tooth 111, uniform and regular distribution is realized, and the winding of coils is facilitated while the insulating part 121 is installed. The second bent portions of two adjacent first stator teeth 111 located at two sides of one second stator tooth 112 are bent in a direction away from one third stator tooth 113, that is, the second bent portions of two adjacent first stator teeth 111 are bent in a direction close to the second stator tooth 112, and are symmetrical to the second stator tooth 112, so that the adjacent first stator slots 114 are uniformly distributed by the second stator tooth 112, and the insulation part 121 is convenient to mount. Through the even regular distribution of first stator tooth 111, second stator tooth 112 and third stator tooth 113 to set up first kink and second kink on first stator tooth 111, when realizing being convenient for install insulating part 121, the space that make full use of first stator tooth 111 kink provided again, as far as possible increase the number of turns of coil, promote magnetic induction intensity, promote the motor performance.

As shown in fig. 3, in some embodiments, the third stator tooth 113 and the first stator tooth 111 form second stator slots 115, and two adjacent second stator slots 115 are symmetrically arranged along a center line of the third stator tooth 113.

In these embodiments, by arranging the third stator tooth 113 and the first stator tooth 111, the second stator slot 115 may be formed between the third stator tooth 113 and the first stator tooth 111, and two connected second stator slots 115 are symmetrical along the third stator slot along the center line of the third stator tooth 113, so that the first stator tooth 111 and the third stator tooth 113 are regularly distributed, and the production is easy.

In some embodiments, the stator winding comprises: the first stator winding 130 is wound on two adjacent first stator teeth 111, and one third stator tooth 113 in the stator core is positioned in the winding area of the first stator winding 130; and a second stator winding (not shown) wound around two adjacent first stator teeth 111, wherein one second stator tooth 112 in the stator core is located in the surrounding area of the second stator winding.

In the embodiments, the winding positions of the first winding and the second winding make full use of the space provided by the bending part, so that convenience is provided for the winding process of the asynchronous motor. The first stator winding 130 is wound on two adjacent first stator teeth 111, and one third stator tooth 113 in the stator core is located in the winding area of the first stator winding 130; the second stator winding is wound on two adjacent first stator teeth 111, one second stator tooth 112 in the stator core is located in the surrounding area of the second stator winding, stator slot space between the stator teeth can be hierarchically and alternately utilized, and a coil is wound, so that the winding operation is facilitated while the number of turns of the coil is increased to improve the magnetic induction intensity, and the space utilization rate is improved.

It should be noted that, the first stator winding 130 is wound first, and after the winding of the first stator winding 130 is completed, the first bending portion and the second bending portion are respectively bent toward the side where the first stator slot 114 is located to wrap the first stator winding 130. Further, the second stator winding is wound after the first stator winding 130 is wound.

In some embodiments, the stator core further comprises: and a stator yoke on which a plurality of stator teeth are separably disposed.

In these embodiments, through setting up stator yoke portion to the separable setting of a plurality of stator teeth can realize the dismouting of stator tooth and stator yoke portion, through adopting detachable structure with stator tooth and stator yoke portion, thereby realizes stator winding's outside wire winding, reduces the wire winding degree of difficulty, and then the assembly efficiency who improves realizes the automatic assembly production of stator.

In some embodiments, the stator further comprises: a first insulating frame; the second insulating frame is detachably connected with the first insulating frame, the first insulating frame and the second insulating frame form a mounting cavity, and one part of the stator core is arranged in the mounting cavity; the first bending section 1212 and the second bending section 1213 are exposed to the first insulating frame and the second insulating frame.

In these embodiments, the stator further includes a first insulating frame and a first insulating frame, and the first insulating frame is adapted to the second insulating frame in size and shape for use. Wherein, first insulating frame is connected with second insulating frame detachably installation, and first insulating frame forms the installation cavity with the insulating frame of second, and the stator core of being convenient for installs in the installation cavity to insulate stator core, and prevent the stator core electric leakage, realized the security that stator core used. The first bending section 1212 and the second bending section 1213 are exposed out of the first insulating frame and the second insulating frame, so that after the stator winding is wound, the stator winding is wrapped by bending the first bending section 1212 and the second bending section 1213, the stator winding and the yoke of the stator are insulated, and the distance between the axial height of the first insulating wall 1210 in the axial direction of the stator core and the upper surface of the stator core meets the conventional creepage distance requirement.

A part of the stator core is disposed in the mounting cavity, that is, a part of the stator teeth is exposed out of the first insulating frame and the second insulating frame, so that the stator teeth and the stator yoke can be mounted in a detachable manner.

In a specific embodiment, further, the stator core and the insulating frame can be automatically assembled through an assembling tool, specifically, a first positioning protrusion and a second positioning protrusion can be arranged on the assembling device, and correspondingly, a first positioning groove and a second positioning groove are correspondingly arranged on the insulating frame, specifically, a first positioning groove is arranged on the first insulating frame, and a second positioning groove is arranged on the second insulating frame, wherein the first positioning groove is communicated with the second positioning groove, so that after the first positioning groove and the second positioning groove are used for positioning and installing the first insulating frame and the second insulating frame, the first positioning groove and the second positioning groove can also be used as wire binding grooves, and therefore, other wire binding grooves do not need to be additionally arranged on the first insulating frame and the second insulating frame for wire binding, that is, the first positioning groove and the second positioning groove which are used for positioning and installing the first insulating frame and the second insulating frame can be used as wire binding grooves, and then simplify the structure of stator, and owing to need not to establish in addition and tie the wire casing, can prevent to establish groove structure in addition on first insulating frame and second insulating frame and reduce the structural strength of first insulating frame and second insulating frame when improving stator assembly efficiency, improve the operating stability of the motor that has this stator.

After the stator core and the insulator 121 are assembled by the assembling device, the assembling device may be detached from the stator core and the insulating frame, and the stator winding may be wound by winding. When stator core installs the installation cavity that encloses to first insulating frame and second insulating frame, partial stator tooth exposes in first insulating frame and second insulating frame, and the stator still includes stator yoke portion, and partial exposed stator tooth can be dismantled with stator yoke portion and be connected, and the assembly of final completion stator realizes the automatic assembly of stator, improves production efficiency.

Example four:

the utility model discloses an aspect of the embodiment provides a motor, include as above-mentioned arbitrary technical scheme's stator, and then possess whole beneficial effect of this stator, no longer describe here.

The utility model provides a motor owing to contain above-mentioned stator, consequently in the actual production process, can utilize earlier and set up insulating part 121 with the first stator groove 114 between first stator tooth 111 and the second stator tooth 112, at the kink that utilizes first stator tooth 111, the winding coil can make the winding coil insulating in corresponding stator groove, prevents the electric leakage, further improves the security that the stator used. Further, the first insulation wall 1210 and the second insulation wall 1211 of the insulation member 121 extend along the side wall of the stator slot and along the axial direction of the stator core, and the first insulation wall 1210 is higher than the second insulation wall 1211, so that the axial insulation of the stator core is realized, the conventional creepage distance requirement is met, and the insulation member can be widely applied to a distributed winding single-phase asynchronous motor and has universality and popularization significance.

Example five:

an embodiment of the third aspect of the utility model provides a household electrical appliance, include the motor as above-mentioned technical scheme, and then possess whole beneficial effect of this motor, no longer describe here.

The utility model provides a household electrical appliances includes the motor, and the motor includes the stator. The stator comprises a stator core, an insulating piece and a stator winding. Wherein the stator core includes a plurality of stator teeth, and two adjacent stator teeth form a stator slot, and the arrangement of the insulator 121 and the winding of the coil of the stator slot provide a mounting space. The insulating part sets up in stator core to play insulating effect, prevent stator core electric leakage, improved the security that the stator used. The stator winding is arranged on the insulating part 121, namely, the insulating part 121 is firstly installed, then the stator winding is installed, and the stator winding is wrapped by the insulating part 121 to play an insulating protection role. To disconnect-type stator, the stator structure of being connected can be dismantled with stator yoke portion to the stator tooth, and the opening of stator slot is towards stator yoke portion, therefore, after the coiling stator winding in the stator slot, on stator core's radial direction, through setting up insulating part 121 parcel stator winding, can make and realize insulating effect through insulating part 121 between stator winding and the stator yoke portion, and then satisfy the conventional creepage distance requirement of disconnect-type stator. Further, the insulation member 121 includes a first insulation wall 1210 and a second insulation wall 1211, the first insulation wall 1210 and the second insulation wall 1211 extend along the side wall of the stator slot, in the axial direction of the stator core, since the first insulation wall 1210 is higher than the second insulation wall 1211, the distance between the stator winding wrapped by the first insulation wall 1210 and the upper surface of the stator core in the axial direction meets the conventional creepage distance requirement, and if the distance is prevented from being too short, air in the distance is easily broken down by current, so that the insulation effect of the insulation member 121 fails, and the split stator cannot meet the conventional safety requirement. The stator in this application is through setting up insulating part 121 in the stator slot to locate insulating part 121 with the stator winding, and wrap up the stator winding through insulating part 121, reach insulating effect between stator winding and the stator yoke portion in the stator slot. Further, along the axial direction of the stator core, the first insulation wall 1210 is higher than the second insulation wall 1211, so that the distance between the height of the stator winding where the first insulation wall 1210 is located in the axial direction and the upper surface of the stator core can meet the conventional creepage distance requirement, for example, the distance is larger than 4mm, and a part of insulation effect can be achieved by air in the distance, that is, the distance between the height of the stator winding in the axial direction and the upper surface of the stator core, which is wrapped by the insulation member 121, can be increased by the first insulation wall 1210 being higher than the second insulation wall 1211, so that the axial insulation of the stator core is achieved, the conventional creepage distance requirement is met, and the stator core can be widely applied to a distributed winding single-phase asynchronous motor and has universality and popularization significance.

In the description of the present specification, the terms "connect", "mount", "fix", and the like are to be understood in a broad sense, for example, "connect" may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. 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 is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to 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, comprising:

the stator core comprises a plurality of stator teeth, and two adjacent stator teeth form a stator slot;

an insulator disposed in a portion of the plurality of stator slots;

a stator winding disposed on the insulator;

wherein the insulator includes a first insulating wall and a second insulating wall, the first insulating wall and the second insulating wall extending along the side wall of the stator slot, the first insulating wall being higher than the second insulating wall in the axial direction of the stator core.

2. The stator according to claim 1,

the height of the first insulating wall is H1, the height of the second insulating wall is H2, and H1-H2 are more than or equal to 2mm and less than or equal to 4.5mm in the axial direction of the stator core.

3. The stator according to claim 1,

the first insulating wall includes:

the free end of the first insulating wall is bent towards one side where the second insulating wall is located to form a first bending section;

the second insulating wall includes:

the free end of the second insulating wall is bent towards one side where the first insulating wall is located to form a second bending section;

the first bending section and the second bending section can be bent to wrap the stator winding.

4. The stator of claim 3, wherein the plurality of stator teeth comprises:

a plurality of first stator teeth including a first bent portion;

the stator core comprises a plurality of second stator teeth, two adjacent first stator teeth are located on two sides of one of the second stator teeth along the circumferential direction of the stator core, the first bent parts of the two adjacent first stator teeth located on two sides of the one second stator tooth are bent in the direction away from the one second stator tooth, the first stator teeth and the second stator teeth form first stator grooves, and the insulating piece is arranged in the first stator grooves.

5. The stator according to claim 4,

an included angle alpha is formed between a plane of the first bending section in the axial direction of the stator core and a plane of the side wall of the first stator groove on the side of the first insulating wall, and the included angle alpha is larger than or equal to 0 degree and smaller than or equal to 45 degrees; and/or

The second bending section forms an included angle beta between a plane located on the axial direction of the stator core and a plane located on the side, where the second insulating wall is located, of the side wall of the first stator groove, and the included angle beta is larger than or equal to 0 degree and smaller than or equal to 45 degrees.

6. The stator according to claim 4,

one side of the insulating piece close to the second stator tooth is the first insulating wall.

7. The stator of claim 4, wherein the first stator tooth further comprises a second bend, the plurality of stator teeth further comprising:

a plurality of third stator teeth, wherein, along the circumferential direction of the stator core, two adjacent first stator teeth are positioned at two sides of one third stator tooth in the plurality of third stator teeth, the one second stator tooth and the one third stator tooth are positioned at two sides of the first stator tooth, and the second bending part in two adjacent first stator teeth at two sides of the one second stator tooth is bent in a direction away from the one third stator tooth;

the third stator tooth and the first stator tooth form second stator slots, and two adjacent second stator slots are symmetrically arranged along the central line of the third stator tooth.

8. The stator of claim 7, wherein the stator winding comprises:

the first stator winding is wound on two adjacent first stator teeth, and a third stator tooth in the stator core is positioned in a winding area of the first stator winding;

and the second stator winding is wound on two adjacent first stator teeth, and one second stator tooth in the stator core is positioned in the surrounding area of the second stator winding.

9. The stator according to any one of claims 1 to 8, wherein the stator core further comprises:

a stator yoke on which the plurality of stator teeth are detachably disposed.

10. The stator according to any one of claims 3 to 8, further comprising:

a first insulating frame;

the second insulating frame is detachably connected with the first insulating frame, the first insulating frame and the second insulating frame form a mounting cavity, and a part of the stator core is arranged in the mounting cavity;

the first bending section and the second bending section are exposed out of the first insulating frame and the second insulating frame.

11. An electrical machine comprising a stator according to any one of claims 1 to 10.

12. An electric household appliance comprising a motor according to claim 11.

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