CN104518580A - Stator, motor and compressor - Google Patents
Stator, motor and compressor Download PDFInfo
- Publication number
- CN104518580A CN104518580A CN201310447338.7A CN201310447338A CN104518580A CN 104518580 A CN104518580 A CN 104518580A CN 201310447338 A CN201310447338 A CN 201310447338A CN 104518580 A CN104518580 A CN 104518580A
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- Prior art keywords
- stator
- motor
- grooved
- stator slot
- slot
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a stator used for a motor. The stator comprises a stator iron core; multiple stator teeth which inwardly extend along the radial direction of the stator; stator slots which are distributed among the stator teeth; and windings with wind the stator teeth so as to generate a rotating magnetic field, wherein the stator slots have different shapes of slot types. Besides, the invention also discloses the motor using the stator and a compressor using the motor.
Description
Technical field
The present invention relates to air-conditioning or refrigeration technology field, particularly relate to the stator for motor, motor and compressor.
Background technology
Motor generally includes and is arranged on stator in housing and is arranged in stator and is supported on shell with the rotor rotated relative to stator.The stator of motor and/or rotor have the winding comprising coil.In motor, electric power to produce magnetic field, thus makes rotor turns by coil.
The stator slot of conventional motors stator adopts same groove design (such as cardinal principle pyriform grooved) and its area of section is equal.This, for the situation needing the coil adopting varying cross-section area, the different number of turn or different materials, can make the copper factor of partial stator groove too high and affect stator winding installation.
Summary of the invention
Object of the present invention is intended at least one aspect solving the above-mentioned problems in the prior art and defect.
According to an aspect of the present invention, provide a kind of stator for motor, it is characterized in that, described stator comprises: stator core; Multiple stator tooth extended internally along the radial direction of described stator; The stator slot distributed between described stator tooth, wherein said stator slot has difform grooved; With the described stator tooth of winding to produce the winding of rotating magnetic field.
Particularly, described stator is used for single-phase or polyphase machine.
Particularly, when winding is distributed winding, the cross-sectional area of described stator slot is not identical.
Particularly, described stator slot comprises first stator slot with the first cross-sectional area and second stator slot with the second cross-sectional area, and wherein said first cross-sectional area is greater than described second cross-sectional area; Compared with the second stator slot, described first stator slot can place the coil larger than the coil section area with the second stator slot, the more coil of the number of turn and/or, place the coil different from the coil method in described second stator slot.
Particularly, when winding is distributed winding, the area of section of each stator slot in described stator slot is identical.
Particularly, described stator slot has the grooved of the first grooved, the second grooved or more.
Particularly, described first grooved and the second grooved are respectively pyriform grooved and substantially trapezoidal grooved substantially; Compared to cardinal principle pyriform grooved, the trapezoidal grooved of described cardinal principle has two roundings near stator yoke place and has smooth top near stator yoke place, makes stator yoke have wide thickness.
Particularly, when winding is centralized winding, the difform grooved of described stator slot is realized by the notch offseting all or part of stator slot.
Particularly, the grooved specular of described adjacent stator slot.
According to a further aspect in the invention, provide a kind of motor, it comprises rotor and stator, and described rotor to can be rotatably set in described stator and opens a distance with described sub-interval, wherein,
Described stator is according to above-mentioned stator.
Particularly, described motor is fixed motor or variable-frequency motor frequently.
Particularly, described motor is three-phase induction motor or three-phase motor with permanent magnets.
Particularly, the operating voltage of the driver of described motor or described motor is 208V-575V.
According to a further aspect in the invention, provide a kind of compressor, described compressor uses above-mentioned stator, or described compressor uses above-mentioned motor.
By above-mentioned known, in the present invention, by adopting the stator slot of different grooved and selecting the cross-sectional area of stator slot as required, copper factor can be tending towards reasonable and can not affect stator winding installation.Afterwards, then according to the needs of stator outer contour, adopt different grooved to prevent stator yoke local magnetic close too high.
Accompanying drawing explanation
These and/or other aspect of the present invention and advantage will become obvious and easy understand below in conjunction with in accompanying drawing description of preferred embodiments, wherein:
Fig. 1 is the schematic diagram of the compressor of use three-phase induction motor according to the embodiment of the present invention;
Fig. 2 is the cross sectional representation with the stator of distributed winding of prior art motor;
Fig. 3 is the cross sectional representation of the stator used together with distributed winding according to an embodiment of the invention;
Fig. 4 is the cross sectional representation of the stator used together with distributed winding according to another embodiment of the present invention;
Fig. 5 is the enlarged diagram of the square frame in Fig. 4;
Fig. 6 is the schematic diagram of another example of the stator shown in Fig. 4;
Fig. 7 is the cross sectional representation with the stator of centralized winding of prior art motor; With
Fig. 8 is the cross sectional representation of the stator used together with centralized winding according to another embodiment of the present invention.
Embodiment
Below by embodiment, and 1-8 by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.In the description, same or analogous drawing reference numeral indicates same or analogous parts.The explanation of following reference accompanying drawing to embodiment of the present invention is intended to make an explanation to present general inventive concept of the present invention, and not should be understood to one restriction of the present invention.
Usually, compressor is used for air-conditioning or refrigerating field.Compressor is the potential of compressible fluid changes mechanical energy, can be divided into reciprocating compressor, scroll compressor (or screw compressor), centrifugal compressor and vane compressor particularly.
Below only for scroll compressor, motor occupation mode wherein and structural configuration are described.
Typically, the operation principle of screw compressor is by the basic circle central rotation of orbiter around fixed scroll, and reduces the volume of the gas compression room formed by the joint of orbiter and fixed scroll gradually, thus reaches the object of Compressed Gas.Wherein, orbiter directly supports on the support that is fixed in compressor housing.In addition, the one end (upper end) of the bent axle rotated for driving orbiter is connected to orbiter by the centre bore in support, the other end (lower end) directly supports on the lower support frame that is fixed in scroll compression engine housing, thus when bent axle is along when rotating clockwise or counterclockwise, corresponding air-breathing, compression and bleeding can be performed.Wherein be discharged in the high pressure chest of screw compressor by the gas compressed by drain valve, discharge eventually through floss hole.
As shown in Figure 1, that show a kind of screw compressor 100 of the present invention.This screw compressor 100 comprises: scroll compression engine housing 1; Support 2, this support 2 is fixed in scroll compression engine housing 1; Fixed scroll 3, it is fixed in scroll compression engine housing 1; Orbiter 4, it to be supported on rotationally on support 2 and to engage to form gas compression room 11 with fixed scroll 3; Lower support frame 5, is fixed on the lower end of compressor housing 1; The actuating mechanism 7 of such as motor, is fixed on the lower end of screw compressor 100, and it transmits its rotatory force by crank mechanism 6.The upper end of crank mechanism 6 is connected with orbiter 4 to fetch and drives orbiter 4 to rotate, and its lower end is supported on lower support frame 5; Drain valve 8, prevents gas backstreaming in screw compressor 100 for the gas in emission gases discharge chambe 11.
On the upper surface that orbiter 4 is supported on support 2 or supporting surface; Scroll compression engine housing 1 limits a confined space therein, and is received into wherein by the parts such as above-mentioned fixed scroll 3, orbiter 4, support 2.The vortex lines structure of fixed scroll 3 and the vortex lines structure of orbiter 4 cooperatively interact to engage or engage and form discharge chambe 11.Fixed scroll 3 is arranged on the top of orbiter 4.Motor 7 comprises stators and rotators, and this motor drives orbiter 4 by crank mechanism 6.
When screw compressor 100 is done, from suction inlet 9 suction gas, after actuating mechanism 7 (such as motor) starts, orbiter 4 is driven by crank mechanism 7 and is retrained by anti-rotation mechanism coupling 6, the revolution that minor radius is done at basic circle center around fixed scroll 3 is reversed, and then pressure high temperature hot gas is produced in the gas compression room 11 that orbiter 4 and fixed scroll 3 are formed, this pressure high temperature hot gas is discharged in high pressure chest 12 along with the movement of orbiter 4 by drain valve 8, now uses drain valve 8 to prevent the backflow of gas in high pressure chest 12; Gas in this high pressure chest 12 final is discharged by exhaust outlet 10.Circulation said process, constantly can produce high temperature and high pressure gas in screw compressor 100.
In the present invention, support 2 comprises stake body 21 and tray deck 22.In addition, stake body 21 is fixed in scroll compression engine housing 1 in modes such as interference fit, and is overlapped on the housing end face of screw compressor 100.Tray deck 22 is fixed on stake body 21 in the mode of matched in clearance, and the chute of tray deck 22 is overlapped on stake body 21, thus fixed support dish 22 and tray deck 22 can not be rotated.Cross slip-ring 23 has into the relative projection of two of cross distribution and lower convexity, and lower convexity is inserted in the chute on tray deck 22, and projection is inserted in the ear groove of orbiter 4.When screw compressor 100 is started working, orbiter 4 can carry out the revolution translation of minor radius relative to tray deck 22.
If when needing (such as supporting disk 22 large not for the Area of bearing supporting orbiter 4), radial bearing disk 24 can also be set between orbiter 4 and cross slip-ring 23 to increase the Area of bearing to orbiter 4, this radial bearing disk 24 is fixed with interference fit and is overlapped on tray deck 22, and supports orbiter 4.
In view of the scroll compression principle of screw compressor 100, squeeze operation and other accessory (although not illustrating) are well known to those of ordinary skill in the art.Therefore, be described in this be no longer described in detail about screw compressor 100 is integrally-built.
As shown in Figure 1, the motor for compressor is generally three-phase induction motor.It will be appreciated, of course, that motor is not limited to three-phase induction motor of the present invention.Three-phase induction motor shown in this is only an example, inventive concept of the present invention can be used for the motor of any other type, as long as when feasible.
Particularly, the motor for compressor can also specifically three-phase permanent body motor.Can be distributed winding electric machine and centralized winding electric machine according to winding configuration.Dividing according to the number of poles of motor, can be 2 poles, 4 grades or multipolar dynamo.Certainly, those skilled in the art are known, and the motor comprising the following stator of the present invention can be used to carry out the motor described in alternate figures 1.
As known to those skilled in the art, motor (such as a phase or polyphase machine) generally includes stators and rotators and some other associated components (such as housing etc.).The stator of the embodiment of the present invention to existing motor improves, and when manufacturing and design motor, the stator of improvement can be utilized to substitute the stator of motor of the prior art.
Usually, motor mainly comprises rotor and stator, and rotor to can be rotatably set in stator and opens a distance with sub-interval.Motor can be frequently fixed or variable-frequency motor.The operating voltage of motor or its driver can be 208V-575V.It should be noted that, motor of the present invention is not limited to the motor of particular type, such as, can be the polyphase machine of monophase machine or such as three phase electric machine.Particularly, as mentioned below, illustrated stator of the present invention is all the stator for 4 pole permanent magnet motors, but those skilled in the art inventive concept according to the present invention can use it for the permanent magnet motor of other numbers of poles.
Fig. 2 shows the cross sectional representation of the stator in prior art motor with distributed winding.Stator 70 comprises stator core 71, is substantially cylindrical shape or other feasible shapes; Multiple stator tooth 72 extended internally along the radial direction of stator; The stator slot 73 of distribution between multiple stator tooth 72; Be wound around stator tooth 72 to produce the winding (i.e. three-phase windings of the prior art, A phase, B phase, C phase winding) of spatially spaced apart certain electrical degree (such as 120 °) successively of rotating magnetic field.As seen from Figure 2, the grooved of stator slot 73 is identical, and stator slot 73 is uniformly distributed along the circumferencial direction of stator.
As can be understood, in the situation shown in fig. 2, because stator adopts the stator slot 73 of same groove design, and the cross-sectional area of stator slot 73 is identical, this, for the situation needing to adopt the coil of varying cross-section area, the coil of the different number of turn or the coil of different materials, can make the copper factor of partial stator groove 73 too high and affect stator winding installation.
This can solve by adopting identical and cross-sectional area the is different stator slot of grooved.That is, there is the large stator slot of large cross-sectional area and there is the little stator slot of little cross-sectional area by according to a graded stator slot 73 being arranged to as required, solving the problems referred to above.
But, adopt grooved identical and the size stator slot that cross-sectional area is different, the local magnetic of stator yoke can be made close too high.
For this reason, when distributed winding, in order to place varying cross-section area wire and/or in order to prevent the magnetic of stator yoke close too high, stator slot 73 can be arranged to have different grooveds.The stator slot of different grooved can have identical or different cross-sectional area, specifically see following.
As shown in Figure 3, it illustrates when having the stator of distributed winding, stator 70 has different grooved and the schematic diagram of the different stator slot 73 of cross-sectional area.This stator slot 73 comprises the stator slot (referred to as large stator slot) 731 of the cardinal principle trapezoidal shape with larger cross-sectional area and has the stator slot (referred to as little stator slot) 732 of cardinal principle pear shape of smaller cross-sectional area area.At this, the cross-sectional area of large stator slot 731 is greater than the cross-sectional area of little stator slot 732.In this example, the coil that the more coil of the larger coil of cross-sectional area, the number of turn or material are different from little stator slot 732 can be placed in large stator slot 731.In figure 3, placed aluminum steel coil in large stator slot 731, and placed copper coil in little stator slot 732.In addition, also show the winding mode of A phase winding in figure 3, wherein solid line represents aluminum steel, and represented by dotted arrows copper cash.In view of showing A phase winding, those skilled in the art can with the winding mode of similar A phase winding, other winding of coiling such as B phase, C phase winding.
Known, the winding mode shown in Fig. 3 is only the object in order to example, and stator of the present invention is not necessarily limited to this specific form, those skilled in the art can according to above-mentioned disclosure the winding of suitable coiling motor.
As shown in Figure 4, when it illustrates the stator with distributed winding, stator 70 has different grooved but the schematic diagram of the identical stator slot 73 of cross-sectional area.Figure 4 illustrates stator slot 73 and there are two kinds of grooveds but their cross-sectional area is identical, i.e. the first stator slot 741 and the second stator slot 742.Visible, the shape of the first stator slot 741 is cardinal principle trapezoidal shape, and the shape of the second stator slot 742 is the pear shape being generally used for stator slot in this area.Specifically as shown in the zoomed-in view of Fig. 5, the first stator slot 741, compared to the second stator slot 742 (as shown in Fig. 5 dotted line), make to become smooth near the stator slot top at stator yoke 75 place, and it has two roundings near stator yoke 75 place.Like this, the first stator slot 741 and the second stator slot 742 can have roughly the same or identical cross-sectional area.By such layout, make stator yoke 75 place wider (namely thickness is larger, as shown in the down arrows in the page of Fig. 5), the magnetic reducing stator yoke 75 place is close.
In addition, also figure 4 illustrates the concrete winding mode of the A phase winding of motor.In like manner, those skilled in the art can according to A phase winding, correspondingly other winding of coiling such as B phase, C phase.
As shown in Figure 6, the stator schematic diagram of the stator slot with four kinds of different grooveds is shown.But the stator slot of four kinds of different grooveds has identical cross-sectional area.In figure 6, the stator slot 761,762,763 and 764 of four kinds of different grooveds has roughly the same or identical cross-sectional area.Be similar to shown in Fig. 4, also figure 6 illustrates the concrete winding mode of A phase winding, correspondingly, can according to other winding of identical winding method coiling such as B phase, C phase.
Certainly, can understand there is different grooveds in order to make stator slot but there is identical cross-sectional area, except the above-mentioned four kinds of stator slot 761-764 specifically illustrated, the stator slot of other shape can also be set as required, as long as their cross-sectional area is identical.
Fig. 7 shows the cross sectional representation of the prior art stator of the stator slot with centralized winding.Visible, the notch 82 of usual motor is in the middle of stator slot 83.In other words, stator slot 83 has identical grooved and has identical cross-sectional area, and distributes equably along the circumferencial direction of stator.
Fig. 8 shows the cross sectional representation with the stator of the stator slot of centralized winding according to an embodiment of the invention.In fig. 8, by offseting all or part of stator rabbet 82, stator slot 85 is made to have different grooved.As shown in the figure, stator slot 85 comprises first Stator Slots 851 with smaller cross-sectional area area and second Stator Slots 852 with larger cross-sectional area.The grooved of adjacent stators groove 85 becomes specular.Like this, the wire of different resistivity can be placed in the different Stator Slots 851 and 852 in same stator slot 85.Namely, consistent in order to ensure adjacent windings resistance, in the second Stator Slots 852, adopt resistivity high and wire (the aluminum steel that cross-sectional area is large, represented by solid line in Fig. 8), and in the first Stator Slots 851, adopt resistivity low and the little wire (copper cash is represented by the dotted line in Fig. 8) of cross-sectional area.Particularly, figure 8 illustrates the winding mode of aluminum steel and copper cash, A1, A2, B1, B2, C1, C2 as shown in the figure, wherein A1, B1, C1 are copper cash winding, and A2, B2, C2 are aluminum steel winding.In addition, owing to offset by stator rabbet 82, the canoe of above-mentioned winding can adopt coil winding machine (not shown) coiling stator.
Known by foregoing description, in the present invention, by adopting the stator slot of different grooved and selecting the cross-sectional area of stator slot as required, copper factor can be tending towards reasonable and can not affect stator winding installation.Afterwards, then according to the needs of stator outer contour, adopt different grooved to prevent stator yoke local magnetic close too high.
The technical characteristic recorded in various embodiments of the present invention can be combined to form new solution mutually, and the new solution of this composition also drops in the true scope of claim of the present invention.
Although some embodiments of this present general inventive concept have been shown and explanation, those skilled in the art will appreciate that, when not deviating from principle and the spirit of this present general inventive concept, can make a change these embodiments, scope of the present invention is with claim and their equivalents.
Claims (14)
1. for a stator for motor, it is characterized in that, described stator comprises:
Stator core;
Multiple stator tooth extended internally along the radial direction of described stator;
The stator slot distributed between described stator tooth, wherein said stator slot has difform grooved; With
Be wound around described stator tooth to produce the winding of rotating magnetic field.
2. stator according to claim 1, is characterized in that,
Described stator is used for single-phase or polyphase machine.
3. stator according to claim 1 and 2, is characterized in that,
When winding is distributed winding, the cross-sectional area of described stator slot is not identical.
4. stator according to claim 3, is characterized in that,
Described stator slot comprises first stator slot with the first cross-sectional area and second stator slot with the second cross-sectional area, and wherein said first cross-sectional area is greater than described second cross-sectional area; Compared with the second stator slot, described first stator slot can place the coil larger than the coil section area with the second stator slot, the more coil of the number of turn and/or, place the coil different from the coil method in described second stator slot.
5. stator according to claim 1 and 2, is characterized in that,
When winding is distributed winding, the area of section of each stator slot in described stator slot is identical.
6. stator according to claim 5, is characterized in that,
Described stator slot has the grooved of the first grooved, the second grooved or more.
7. stator according to claim 6, is characterized in that,
Described first grooved and the second grooved are respectively pyriform grooved and substantially trapezoidal grooved substantially;
Compared to cardinal principle pyriform grooved, the trapezoidal grooved of described cardinal principle has two roundings near stator yoke place and has smooth top near stator yoke place, makes stator yoke have wide thickness.
8. stator according to claim 1 and 2, is characterized in that,
When winding is centralized winding, the difform grooved of described stator slot is realized by the notch offseting all or part of stator slot.
9. stator according to claim 8, is characterized in that,
The grooved specular of described adjacent stator slot.
10. a motor, is characterized in that, comprises rotor and stator, and described rotor to can be rotatably set in described stator and opens a distance with described sub-interval, wherein,
Described stator is the stator according to any one of claim 1-9.
11. motors according to claim 10, is characterized in that,
Described motor is fixed motor or variable-frequency motor frequently.
12. motors according to claim 11, is characterized in that,
Described motor is three-phase induction motor or three-phase motor with permanent magnets.
13. motors according to claim 12, is characterized in that,
The operating voltage of the driver of described motor or described motor is 208V-575V.
14. 1 kinds of compressors, is characterized in that, described compressor uses the stator according to any one of claim 1-9, or described compressor uses the motor according to any one of claim 10-13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310447338.7A CN104518580A (en) | 2013-09-26 | 2013-09-26 | Stator, motor and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310447338.7A CN104518580A (en) | 2013-09-26 | 2013-09-26 | Stator, motor and compressor |
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| Publication Number | Publication Date |
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| CN104518580A true CN104518580A (en) | 2015-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310447338.7A Pending CN104518580A (en) | 2013-09-26 | 2013-09-26 | Stator, motor and compressor |
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| CN (1) | CN104518580A (en) |
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| CN105119406A (en) * | 2015-08-28 | 2015-12-02 | 郑州凌达压缩机有限公司 | Double-cage rotor punching sheet, double-cage rotor and motor |
| CN109599964A (en) * | 2017-10-02 | 2019-04-09 | 通用电气航空***有限责任公司 | The method of the stator module of stator module, stator core and formation motor |
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| CN109599964A (en) * | 2017-10-02 | 2019-04-09 | 通用电气航空***有限责任公司 | The method of the stator module of stator module, stator core and formation motor |
| US10833543B2 (en) | 2017-10-02 | 2020-11-10 | Ge Aviation Systems Llc | Stator assembly |
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