CN208589819U - Magneto and compressor - Google Patents

Abstract

The utility model proposes a kind of magneto and compressors, magneto includes motor down-lead, plug connector and coaxial stator structure and rotor, stator structure includes the stator core being made of multiple sub- iron cores being circumferentially arranged along stator core and the multiple coil groups for the teeth portion for being wound in sub- iron core, wherein, stator groove gap is equipped between the teeth portion of two adjacent sub- iron cores, the yoke portion of every sub- iron core is equipped with the identical re-entrant angle in wedge angle direction and salient angle；Wherein, it is rectangle that the conducting wire of coil group, which is parallel to the plane institute section shape shape of the end face of stator core,.By the technical solution of the utility model, the copper factor of stator structure can be increased, so as to increase the gap of slot under the premise of reaching identical effective area, be conducive to carry out coiling to stator structure using automation equipment；Furthermore the conducting wire of rectangular section is not allowed to be also easy to produce rolling and movement, keeps the arrangement of harness group close, reduces a possibility that conducting wire in harness group loosens, increase the reliability of coil block.

Description

Magneto and compressor

Technical field

The utility model relates to Compressor Technology fields, in particular to a kind of magneto and a kind of compressor.

Background technique

For the slot utilization rate for promoting motor, the copper factor for increasing motor product is relatively straightforward approach, at present in industry The copper factor of the motor product of most of company has been in relatively high level, and the difficulty further promoted is increasing, such as Fruit copper factor is greater than certain restrictions condition, can bring multiple serious problems such as manufacture is bad, reliability is low.

Utility model content

The utility model aims to solve at least one of technical problems existing in the prior art or related technologies.

In view of this, one of the utility model has been designed to provide a kind of magneto.

Another of the utility model is designed to provide a kind of compressor.

To achieve the goals above, the technical solution of the utility model first aspect provides a kind of magneto, including Coaxial stator structure and rotor, stator structure include: stator core, and stator core is by multiple being circumferentially arranged along stator core Sub- iron core constitute, wherein stator groove gap is equipped between the teeth portion of two adjacent sub- iron cores, the yoke portion of every sub- iron core is equipped with The identical re-entrant angle in wedge angle direction and salient angle；Coil block is fixedly arranged on stator core, and coil block includes: multiple coil groups, often A coil group is wound in the teeth portion of sub- iron core, and each coil group has at least two connectors；Magneto further include: at least two Group motor down-lead, every group of motor down-lead for connecting coil group and circuit for controlling motor, the lead radical of every group of motor down-lead with The quantity of coil group is identical；At least two plug connectors, each plug connector are connected with corresponding motor down-lead, wherein coil group The plane institute section shape shape that conducting wire is parallel to the end face of stator core is rectangle.

In the technical scheme, magneto includes the motor down-lead that at least two groups correspond to coil group group quantity, grafting Motor down-lead is connect by part with coil group, enables circuit for controlling motor by the working condition of motor down-lead control coil group, Rotor rotation is driven by the stator structure being coaxial with the rotor to realize, wherein stator core is made of multiple sub- iron cores, more A sub- iron core is conducive to the maintenance maintenance of stator structure, need not be to entire stator core when one of them sub- iron core breaks down It is replaced, increases the durability of stator core, meanwhile, it is conducive to coiling using multiple split type sub- iron cores, it is fixed convenient for improving The productivity of minor structure.Coil group is wound in the teeth portion of sub- iron core, the yoke portion of sub- iron core be equipped with the identical salient angle in wedge angle direction and Connection is realized in re-entrant angle, the cooperation between different sub- iron cores by salient angle and re-entrant angle, meanwhile, re-entrant angle and salient angle can increase difference Contact area between sub- iron core, it is even closer during connecting different sub- iron cores.It is fixed to be equipped between the teeth portion of sub- iron core Pilot trench gap, stator groove gap are wound in the teeth portion of sub- iron core convenient for coil group, and the section of the conducting wire of coil group is rectangle, coil group Spacing between conducting wire is smaller, arrangements of conductors more crypto set, and the cross-sectional area of coil group increases, the stator slot between sub- iron core Effective area phase meanwhile, it is capable to increase the copper factor of motor, convenient for promoting the performance of motor, simultaneously as rectangular section Conducting wire is capable of providing more cross-sectional areas, when providing identical cross-sectional area, using the coil group number of rectangular section conducting wire Amount is less, consequently facilitating reducing the quantity of stator slot, increases the gap between sub- iron core teeth portion, and then improve the effective of stator slot Area increases the gap between sub- iron core teeth portion and is conducive to carry out coiling to stator structure using automation equipment；Rectangle simultaneously The conducting wire in section is not allowed to be also easy to produce rolling and movement, keeps the arrangement of harness group close, reduces what the conducting wire in harness group loosened Possibility increases the reliability of coil block.

Wherein it is preferred to can suitably reduce stator structure according to practical service environment under the premise of satisfying the use demand Sub- iron core quantity.

In the above-mentioned technical solutions, it is preferable that projection of any coil group on the outer circumference surface of stator core is located at not On same sub- iron core.

In the technical scheme, projection of any coil group on the outer circumference surface of stator core is located at different sub- iron cores On, i.e., the position that coil group is wound on sub- iron core is located at the side of sub- iron core, convenient for installation of the coil group on sub- iron core, together When convenient for different sub- iron cores installation.

In the above-mentioned technical solutions, it is preferable that every sub- iron core includes: teeth portion, and coil group is wound in teeth portion；Yoke portion, Yoke portion is circumferentially extended to form to the side of teeth portion from teeth portion close to one end of outer circumference surface, and yoke portion includes: salient angle, is set to yoke portion One end in the circumferential；Re-entrant angle, the other end set on salient angle relative to yoke portion, wherein the engaging by salient angle with re-entrant angle is realized The connection of adjacent sub- iron core.

In the technical scheme, coil group is wound in the teeth portion of sub- iron core, the two sides in the circumferential in the yoke portion of sub- iron core It is respectively equipped with salient angle and re-entrant angle, different sub- iron cores realizes connection by the cooperation of salient angle and re-entrant angle, circumferential in sub- iron core yoke part On two sides setting salient angle and re-entrant angle, convenient for keeping different sub- iron cores corresponding, i.e., sub- iron core being capable of correct Fast Installation.Meanwhile Re-entrant angle and salient angle can increase the contact area between different sub- iron cores, convenient for being completely embedded between different sub- iron cores.

Wherein it is preferred to which re-entrant angle is set to yoke portion close to the side of teeth portion.

In the above-mentioned technical solutions, it is preferable that re-entrant angle includes: the first groove, set on yoke portion close to the side of teeth portion, first Groove includes: transition face, adjacent with the side of teeth portion；Bottom surface, set on side relative to the other side of transition face and and transition face Adjacent, bottom surface is parallel to side；Intersect with bottom surface the side of second groove, the second groove；Salient angle includes: and the first groove shapes Mutually the first suitable protrusion；And second groove shapes mutually suitable the second protrusion, wherein salient angle and re-entrant angle pass through the first protrusion and the The cooperation of one groove and the second protrusion engage with the cooperation of the second groove realization.

In the technical scheme, the transition face of the first groove and bottom surface and the side of the teeth portion parallel with bottom surface constitute Step surface, while cooperating second groove adjacent with bottom surface, only cooperate in the first protrusion with the first groove, while the second protrusion It can engage with ability salient angle in the case where the cooperation of the second groove with re-entrant angle, the possibility of sub- iron core installation site mistake can be reduced Property, especially suitable for the second groove be axisymmetric shape the case where.It is also pointed out that while the first groove and second recessed is arranged Slot can increase the quantity of the freedom degree of the sub- iron core limited when re-entrant angle and salient angle cooperation, increase the rigidity of stator core, reduce Sub- iron core connects a possibility that unstable situation occurs, to increase the stability and reliability of stator core.

In the above-mentioned technical solutions, it is preferable that on the section for being parallel to end face, the first side that teeth portion is contacted with coil group It is parallel with the second side, and first while and being equidistant to the center of circle of stator core when second, wherein first while with second position In the opposite side of teeth portion.

In the technical scheme, it will be understood that on any section for being parallel to end face, positioned at teeth portion opposite side and coil The first of group contact is parallel while with second, and the magnetic field for generating coil is more uniform, convenient for improving the performance of motor.

In the above-mentioned technical solutions, it is preferable that the distance between bottom surface and side, no more than first at second between Distance half.

In the technical scheme, the distance between bottom surface and side, no more than first the distance between while with second Half can either be such that the first groove preferably constrains the freedom degree of sub- iron core in the numberical range, and can reduce Influence of first groove to yoke portion and teeth portion connecting portion intensity.

In the above-mentioned technical solutions, it is preferable that the coil number of plies of coil group is along the radial by stator core of stator core The center of circle gradually increases outward.

In the technical scheme, the coil number of plies of coil group is radially gradually increased by the center of circle outward, convenient for increasing stator The copper factor of structure, the circumferential width especially suitable for the slot between teeth portion can either increase in radial the case where constantly increasing Copper factor, and then increase the effective area of slot, and can make to keep suitable gap between different coil groups, reduce coil group because Hypotelorism and a possibility that impact mutually.

In the above-mentioned technical solutions, it is preferable that the quantity of plug connector is two, plug connector be every phase coil group into Wire terminal, another plug connector are the outlet joint of every phase coil group.

In the technical scheme, in two plug connectors, one be every phase coil group lead-in line joint, another and every phase line The outlet joint of circle group convenient for the wiring of magneto other circuit structures and coil group, while being easy to putting together for harness, is convenient for The manufacture of magneto and maintenance maintenance.

In the above-mentioned technical solutions, it is preferable that the rated speed of magneto is not less than 3600r/min, magneto Maximum (top) speed is not less than 5400r/min.

In the technical scheme, the rated speed of rotor is not less than 3600r/min, and the maximum of rotor turns Speed can make motor keep stable output power not less than 5400r/min in the numberical range, work at the same time reliable.

The technical solution of the utility model second aspect provides a kind of compressor, in the technical solution including first aspect The motor down-lead of described in any item magnetoes, at least six connecting terminals, magneto passes through connecting terminal and motor control Circuit processed is connected.

In the technical scheme, the Permanent Magnet and Electric as described in any one of technical solution that compressor includes first aspect Machine, thus compressor under the drive of magneto can steady operation, reliability is higher.Pass through at least six terminals simultaneously Circuit for controlling motor is connect by son with motor down-lead, and circuit for controlling motor is enable to control the working condition of magneto System.

The additional aspect and advantage of the utility model will become obviously in following description section, or practical new by this The practice of type is recognized.

Detailed description of the invention

Fig. 1 shows the structural schematic diagram of the stator structure of magneto in one embodiment according to the present utility model；

Fig. 2 shows the structures of the sub- iron core of permanent magnet motor stator structure in one embodiment according to the present utility model to show It is intended to；

The structure of rotor and stator structure that Fig. 3 shows the magneto of one embodiment according to the present utility model is shown It is intended to；

Fig. 4 shows the structural schematic diagram of the compressor of one embodiment according to the present utility model.

Wherein, the corresponding relationship in Fig. 1 to Fig. 4 between appended drawing reference and component names are as follows:

10 magnetoes, 102 rotors, 104 stator structures, 1042 stator cores, 1044 sub- iron cores, 1046 teeth portion, 1048 Side, 1050 yoke portions, 1052 salient angles, 1,054 first protrusions, 1,056 second protrusions, 1058 re-entrant angles, 1,060 first grooves, 1062 mistakes Cross face, 1064 bottom surfaces, 1,066 second grooves, 1068 stator groove gaps, 1070 coil blocks, 1072 coil groups, 20 compressors.

Specific embodiment

In order to be more clearly understood that the above objects, features, and advantages of the utility model, with reference to the accompanying drawing and have The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen The feature in embodiment and embodiment please can be combined with each other.

Many details are explained in the following description in order to fully understand the utility model, still, this is practical Novel to be implemented using other than the one described here other modes, therefore, the protection scope of the utility model is simultaneously It is not limited by the specific embodiments disclosed below.

Some embodiments according to the present utility model are described referring to Fig. 1 to Fig. 4.

As shown in Figure 1 to Figure 3, the embodiment of the utility model first aspect proposes a kind of magneto 10, including same The stator structure 104 and rotor 102 of axis, stator structure 104 include: stator core 1042, and stator core 1042 is by multiple along fixed The sub- iron core 1044 of sub- iron core 1042 being circumferentially arranged is constituted, wherein every sub- iron core 1044 includes: teeth portion 1046, coil group 1072 are wound in teeth portion 1046；Yoke portion 1050, yoke portion 1050 from teeth portion 1046 close to one end of outer circumference surface circumferentially to tooth The side in portion 1046 extends to form, and yoke portion 1050 includes: salient angle 1052, set on the one end of yoke portion 1050 in the circumferential；Re-entrant angle 1058, the other end set on salient angle 1052 relative to yoke portion 1050；Re-entrant angle 1058 includes: the first groove 1060, is set to yoke portion 1050 close to the side of teeth portion 1046, the first groove 1060 include: transition face 1062, adjacent with the side 1048 of teeth portion 1046； Bottom surface 1064, set on side 1048 relative to the other side of transition face 1062 and adjacent with transition face 1062, bottom surface 1064 is parallel In side 1048；Intersect with bottom surface 1064 side of second groove 1066, the second groove 1066；Salient angle 1052 includes: with first The first protrusion 1054 that 1060 shape of groove is mutually fitted；And the second protrusion 1056 that 1066 shape of the second groove is mutually fitted, wherein The cooperation and the second protrusion 1056 and second that salient angle 1052 and re-entrant angle 1058 pass through the first protrusion 1054 and the first groove 1060 Engaging is realized in the cooperation of groove 1066, realizes the connection of adjacent sub- iron core 1044 with the engaging of re-entrant angle 1058 by salient angle 1052； It coil group 1072 1066, is fixedly arranged on stator core 1042, coil group 1072 1066 include: multiple coil groups 1072, often A coil group 1072 is wound in the teeth portion 1046 of sub- iron core 1044, the coil number of plies of coil group 1072 radially by the center of circle outward by It is cumulative plus, and each coil group 1072 has at least two connectors, the first side that teeth portion 1046 is contacted with coil group 1072 and the Two sides are parallel, and first while and being equidistant to the center of circle of stator core 1042 when second, and first while with second position In the opposite side of teeth portion 1046；Magneto 10 further include: at least two groups motor down-lead, every group of motor down-lead is for connecting coil group 1072 and circuit for controlling motor, the lead radical of every group of motor down-lead it is identical as the quantity of coil group 1072；At least two grafting Part, each plug connector are connected with corresponding motor down-lead, wherein the conducting wire of coil group 1072 is parallel to stator core 1042 The plane institute section shape shape of end face is rectangle, and the quantity of plug connector is two, and a plug connector is the inlet wire of every phase coil group 1072 Connector, another plug connector are the outlet joint of every phase coil group 1072, and re-entrant angle 1058 is set to yoke portion 1050 close to teeth portion 1046 Side.

In this embodiment, motor down-lead of the magneto 10 including at least two groups corresponding to 1072 quantity of coil group, two Motor down-lead is connect by a plug connector with coil group 1072, and circuit for controlling motor is enable to pass through motor down-lead control coil group 1072 working condition drives rotor 102 to rotate, wherein two to realize by the stator structure 104 coaxial with rotor 102 In a plug connector, a lead-in line joint for every phase coil group 1072, the outlet joint of another and every phase coil group 1072, just In the wiring of 10 other circuit structures and coil group 1072 of magneto, while being easy to putting together for harness, is convenient for magneto 10 Manufacture and maintenance maintenance；Stator core 1042 is made of multiple sub- iron cores 1044, and multiple sub- iron cores 1044 are conducive to stator knot The maintenance maintenance of structure 104 need not carry out more entire stator core 1042 when one of them sub- iron core 1044 breaks down It changes, increases the durability of stator core 1042, meanwhile, it is conducive to coiling using multiple split type sub- iron cores 1044, convenient for improving The productivity of stator structure 104.Coil group 1072 is wound in the teeth portion 1046 of sub- iron core 1044, the yoke portion of sub- iron core 1044 1050 are equipped with the identical salient angle 1052 in wedge angle direction and re-entrant angle 1058, pass through 1052 He of salient angle between different sub- iron cores 1044 Connection is realized in the cooperation of re-entrant angle 1058, two sides setting salient angle 1052 and re-entrant angle in sub- 1044 yoke portion of iron core, 1050 circumferential direction 1058, convenient for keeping different sub- iron cores 1044 corresponding, i.e., sub- iron core 1044 being capable of correct Fast Installation.Meanwhile 1058 He of re-entrant angle Salient angle 1052 can increase the contact area between different sub- iron cores 1044, during connecting different sub- iron core 1044 more Step up close.Wherein, the transition face 1062 of the first groove 1060 and bottom surface 1064 and the teeth portion 1046 parallel with bottom surface 1064 Side 1048 constitutes step surface, while cooperating second groove 1066 adjacent with bottom surface 1064, only in the first protrusion 1054 Cooperate with the first groove 1060, while ability salient angle 1052 and re-entrant angle in the case where the second protrusion 1056 and the cooperation of the second groove 1066 A possibility that 1058 can engage, and can reduce sub- 1044 installation site mistake of iron core, especially suitable for the second groove 1066 The case where for axisymmetric shape.Meanwhile on any section for being parallel to end face, positioned at 1046 opposite side of teeth portion and coil group The first of 1072 contacts is parallel while with second, and the magnetic field for generating coil is more uniform, convenient for improving the performance of motor.Also It is noted that being arranged the first groove 1060 simultaneously and the second groove 1066 can increase re-entrant angle 1058 and when salient angle 1052 cooperates The quantity of the freedom degree of the sub- iron core 1044 of limitation increases the rigidity of stator core 1042, reduces sub- iron core 1044 and connect shakiness A possibility that fixed situation occurs, to increase the stability and reliability of stator core 1042.The teeth portion of sub- iron core 1044 Stator groove gap 1068 is equipped between 1046, stator groove gap 1068 is wound in the teeth portion of sub- iron core 1044 convenient for coil group 1072 1046, the coil number of plies of coil group 1072 is radially gradually increased by the center of circle outward, is expired convenient for increasing the slot of stator structure 104 Rate, the circumferential width especially suitable for the slot between teeth portion 1046 can either increase copper factor in radial the case where constantly increasing, And then increase the effective area of slot, and can make to keep suitable gap between different coil groups 1072, reduce coil group 1072 A possibility that being impacted mutually because of hypotelorism.The section of the conducting wire of coil group 1072 is rectangle, and coil group 1072 is led Spacing between line is smaller, arrangements of conductors more crypto set, and the cross-sectional area of coil group 1072 increases, between sub- iron core 1044 The effective area phase of stator slot is meanwhile, it is capable to increase the copper factor of motor, convenient for promoting the performance of motor, simultaneously as rectangle The conducting wire in section is capable of providing more cross-sectional areas, when providing identical cross-sectional area, using the line of rectangular section conducting wire 1072 quantity of circle group is less, consequently facilitating reducing the quantity of stator slot, increases the gap between sub- 1044 teeth portion 1046 of iron core, into And the effective area of stator slot is improved, the gap increased between sub- 1044 teeth portion 1046 of iron core is conducive to using automation equipment pair Stator structure 104 carries out coiling；The conducting wire of rectangular section is not allowed to be also easy to produce rolling and movement simultaneously, keeps the arrangement of harness group close, A possibility that conducting wire in harness group loosens is reduced, coil group 1072 1066 reliabilities are increased.

Wherein it is preferred to can suitably reduce stator structure according to practical service environment under the premise of satisfying the use demand The quantity of 104 sub- iron core 1044.

As shown in Fig. 2, in one embodiment of the utility model, it is preferable that between bottom surface 1064 and side 1048 Distance H, no more than first the distance between while with second Tw half.

In this embodiment, the distance between bottom surface 1064 and side 1048 H, no more than first at second between The half of distance Tw, in the numberical range, can either make the first groove 1060 preferably to the freedom degree of sub- iron core 1044 into Row constraint, and influence of first groove 1060 to yoke portion 1050 and 1046 connecting portion intensity of teeth portion can be reduced.

In one embodiment of the utility model, it is preferable that the rated speed of magneto 10 is not less than 3600r/ The maximum (top) speed of min, magneto 10 are not less than 5400r/min.

In this embodiment, the rated speed of rotor 102 is not less than 3600r/min, and rotor 102 is most Big revolving speed can make motor keep stable output power not less than 5400r/min in the numberical range, and working at the same time can It leans on.

As shown in figure 4, the embodiment of the utility model second aspect provides a kind of compressor 20, including first aspect Magneto 10 described in any one of embodiment, the motor down-lead of at least six connecting terminals, magneto 10 pass through wiring Terminal is connected with circuit for controlling motor.

In this embodiment, magneto described in any one of embodiment as compressor 20 including first aspect 10, thus compressor 20 under the drive of magneto 10 can steady operation, reliability is higher.It is connect simultaneously by least six Circuit for controlling motor is connect by line terminals with motor down-lead, enable circuit for controlling motor to the working condition of magneto 10 into Row control.

The technical solution of the utility model is had been described in detail above with reference to the accompanying drawings, by the technical solution of the utility model, The section of the conducting wire of magneto coil group is rectangle, can increase the effective area of the slot of stator structure, especially suitable for son The stator structure of iron core negligible amounts can increase the gap of slot under the premise of reaching identical effective area, be conducive to make Coiling is carried out to stator structure with automation equipment；The conducting wire of rectangular section is not allowed to be also easy to produce rolling and movement simultaneously, makes harness Group arrangement is close, reduces a possibility that conducting wire in harness group loosens, increases the reliability of coil block.

In the present invention, term " first ", " second ", " third " are only used for the purpose of description, and should not be understood as Indication or suggestion relative importance；Term " multiple " then refers to two or more, unless otherwise restricted clearly.Term " peace Dress ", " connected ", " connection ", the terms such as " fixation " shall be understood in a broad sense, can also be with for example, " connection " may be a fixed connection It is to be detachably connected, or be integrally connected；" connected " can be directly connected, can also be indirectly connected through an intermediary.It is right For those skilled in the art, can understand as the case may be above-mentioned term in the present invention specifically contain Justice.

In the description of the utility model, it is to be understood that term " on ", "lower", "left", "right", "front", "rear" etc. refer to The orientation or positional relationship shown be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the utility model and Simplify description, rather than the device or unit of indication or suggestion meaning there must be specific direction, with specific orientation construction And operation, it is thus impossible to be construed as a limitation of the present invention.

In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc. Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least the one of the utility model In a embodiment or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment Or example.Moreover, the particular features, structures, materials, or characteristics of description can be in any one or more embodiment or examples In can be combined in any suitable manner.

The above is only the preferred embodiments of the utility model, are not intended to limit the utility model, for this field Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model, Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of magneto, including coaxial stator structure and rotor, which is characterized in that the stator structure includes:

Stator core, the stator core are made of multiple sub- iron cores being circumferentially arranged along the stator core, wherein adjacent Two sub- iron cores teeth portion between be equipped with stator groove gap, it is identical that the yoke portion of each sub- iron core is equipped with wedge angle direction Re-entrant angle and salient angle；

Coil block is fixedly arranged on the stator core, and the coil block includes:

Multiple coil groups, each coil group is wound in the teeth portion of the sub- iron core, and each coil group has at least Two connectors；

The magneto further include: at least two groups motor down-lead, motor down-lead described in every group for connect the coil group and The lead radical of circuit for controlling motor, motor down-lead described in every group is identical as the quantity of the coil group；

At least two plug connectors, each plug connector are connected with the corresponding motor down-lead,

Wherein, it is rectangle that the conducting wire of the coil group, which is parallel to the plane institute section shape shape of the end face of the stator core,.

2. magneto according to claim 1, which is characterized in that any coil group is in the outer of the stator core Projection on periphery is located on the different sub- iron cores.

3. magneto according to claim 2, which is characterized in that each sub- iron core includes:

The teeth portion, the coil group are wound in the teeth portion；

The yoke portion, the yoke portion from the teeth portion close to one end of the outer circumference surface along the circumferential direction to the one of the teeth portion Side extends to form, and the both ends of the yoke portion circumferentially are respectively equipped with the salient angle and the re-entrant angle, by the salient angle with it is described The connection of the adjacent sub- iron core is realized in the engaging of re-entrant angle.

4. magneto according to claim 3, which is characterized in that the re-entrant angle includes:

First groove, set on the yoke portion close to the side of the teeth portion, first groove includes:

Transition face is adjacent with the side of the teeth portion；

Bottom surface, set on the side relative to the other side of the transition face and adjacent with the transition face, the bottom surface is parallel In the side；

Intersect with the bottom surface side of second groove, second groove；

The salient angle includes:

The first protrusion mutually fitted with first groove shapes；And

The second protrusion mutually fitted with second groove shapes,

Wherein, the salient angle and the re-entrant angle pass through the cooperation of first protrusion and first groove and described second convex The cooperation realization with second groove is played to engage.

5. magneto according to claim 4, which is characterized in that on the section for being parallel to the end face, the tooth Portion contacted with the coil group first while and second while it is parallel, and described first while and second while arrive the circle of the stator core The heart is equidistant,

Wherein, the described first opposite side for being located at the teeth portion while with described second.

6. magneto according to claim 5, which is characterized in that the distance between the bottom surface and the side, no Greater than the described first half the distance between while with described second.

7. magneto according to any one of claim 1 to 6, which is characterized in that the coil number of plies of the coil group Radial along the stator core is gradually increased outward by the center of circle of the stator core.

8. magneto according to any one of claim 1 to 6, which is characterized in that the quantity of the plug connector is two A, a plug connector is the lead-in line joint of coil group described in every phase, and another plug connector is coil group described in every phase Outlet joint.

9. magneto according to any one of claim 1 to 6, which is characterized in that specified turn of the magneto Speed is not less than 3600r/min, and the maximum (top) speed of the magneto is not less than 5400r/min.

10. a kind of compressor characterized by comprising

Magneto as claimed in any one of claims 1-9 wherein；

The motor down-lead of at least six connecting terminals, the magneto is connected by connecting terminal with circuit for controlling motor.