CN104242497B - Compressor - Google Patents

Abstract

The invention discloses a kind of compressor, including：Housing, compression mechanism and permagnetic synchronous motor, the compression mechanism are located in the housing, and the compression mechanism includes bent axle；The permagnetic synchronous motor includes stator and rotor, the rotor is fixed with the bent axle, the stator includes at least two axially disposed sub- stators, each described sub- stator includes iron core and multiple windings, multiple stator slots are formed with the iron core, the multiple winding is wrapped on the iron core through the multiple stator slot, the corresponding winding parallel in axial direction of at least two sub- stator.Compressor of the invention, block assembly is carried out by stator, and by the way of parallel winding wiring, with the axially each section of change of air gap flux density, the winding inductance of each straton stator in space individually changes, the piecewise correction to rotor eccentricity is realized, it is achieved thereby that the purpose corrected to rotor eccentricity on the whole, and reduce electromagnetic noise.

Description

Compressor

Technical field

The present invention relates to art of refrigeration units, more particularly, to a kind of compressor.

Background technology

Pointed out in correlation technique, compressor stator is fixed together with main casing, rotor is fixed with bent axle upper end hot jacket, it is bent Axle lower end is fixed together with base bearing, cylinder and frame, i.e. there is axial restraint the lower end of bent axle, and upper end is then in hanging shape State.Exactly because using the unidirectional fixed form of this bent axle, make rotor that certain offset is there is in assembling process, forever In magnetic-synchro motor operation course, as electric current constantly increases, Unbalanced-magnetic-pull increase makes bent axle amount of deflection become big, turns Sub eccentric aggravation, so that permagnetic synchronous motor electromagnetic noise increases.For high-power, the permanent magnet synchronous electric of Gao Jihou Machine, stator and rotor gap uniformity is more difficult to ensure that permagnetic synchronous motor unilateral magnetic force is bigger, and the higher problem of electromagnetic noise is got over Seriously.

It is many using induction installation is installed in current large-scale permagnetic synchronous motor, to rotor eccentricity by way of signal feeds back Management and control is carried out, however, for the permagnetic synchronous motor of this power grade of compressor, it is contemplated that its special working environment, mesh To rotor eccentricity still without effective ameliorative way in preceding engineering, the problem that rotor eccentricity causes noise exceeded exists always.

The content of the invention

It is contemplated that at least solving one of technical problem present in prior art.Therefore, one object of the present invention It is to propose a kind of compressor, the compressor effectively improves the rotor eccentricity problem of permagnetic synchronous motor, and reduces electricity Magnetic noise.

Compressor according to embodiments of the present invention, including：Housing；Compression mechanism, the compression mechanism is located at the housing Interior, the compression mechanism includes bent axle；And permagnetic synchronous motor, the permagnetic synchronous motor includes stator and rotor, described Rotor is fixed with the bent axle, and the stator includes at least two axially disposed sub- stators, and each described sub- stator includes Iron core and multiple windings, are formed with multiple stator slots on the iron core, the multiple winding winds through the multiple stator slot On the iron core, the corresponding winding parallel in axial direction of at least two sub- stator.

Compressor according to embodiments of the present invention, by carrying out block assembly to stator, and using parallel winding wiring Mode, with the axially each section of change of air gap flux density, the winding inductance of each straton stator in space individually changes, and it is right to realize The piecewise correction of rotor eccentricity, it is achieved thereby that the purpose corrected to rotor eccentricity on the whole, while reducing electromagnetism Noise.

Alternatively, the groove area of the stator slot of described at least two sub- stators is identical.

Specifically, the line footpath and circle of the structure of the iron core of described at least two sub- stators and each winding Number all same.

Alternatively, the line footpath and the number of turn of each winding are directed away from along from the side of the neighbouring compression mechanism respectively The direction of the side of the compression mechanism increases successively.

Or alternatively, the groove area of the stator slot of at least two sub- stator is different.

Still optionally further, the groove area of the stator slot of described at least two sub- stators is along from adjacent to the compressor The direction that the side of structure is directed away from the side of the compression mechanism increases successively.

Alternatively, along the direction from the side that the compression mechanism is directed away from adjacent to the side of the compression mechanism, institute The line footpath for stating each winding of at least two sub- stators increases successively.

Or alternatively, along the side from the side that the compression mechanism is directed away from adjacent to the side of the compression mechanism To the number of turn of each winding of at least two sub- stator increases successively.

Further, the rotor includes at least two axially disposed sub- rotors, at least two sub- rotor Axial restraint angle and magnetizing direction all same, at least two sub- rotor are corresponded with described at least two sub- stators.

Further, each described sub- stator also includes：Two insulating supports, it is right that described two insulating supports are respectively provided at The axial two ends of the iron core answered, wherein being fixed by the insulating support between two adjacent sub- stators.

Alternatively, the rotor is located at the internal or external of the stator.

Additional aspect of the invention and advantage will be set forth in part in the description, and will partly become from the following description Obtain substantially, or recognized by practice of the invention.

Brief description of the drawings

Of the invention above-mentioned and/or additional aspect and advantage will become from description of the accompanying drawings below to embodiment is combined Substantially and be readily appreciated that, wherein：

Fig. 1 is the part sectioned view of compressor according to an embodiment of the invention；

Fig. 2 is the stereogram of the stator of the compressor shown in Fig. 1；

Fig. 3 is the winding connection figure of the sub- stator shown in Fig. 2；

Fig. 4 is the part sectioned view of compressor in accordance with another embodiment of the present invention；

Fig. 5 is the radial direction magnetic pull F of the winding generation of the sub- stator of compressor according to embodiments of the present invention with motor electricity Feel the transient changing curve map of L.

Reference：

100：Compressor；

1：Housing；2：Compression mechanism；21：Bent axle；

3：Permagnetic synchronous motor；31：Stator；32：Rotor；321：Sub- rotor；

311：Sub- stator；3111：Iron core；3112：Central through hole；

3121：First winding；3122：Second winding；3123：The tertiary winding；3124：4th winding；

3125：5th winding；3126：6th winding；

3121’：7th winding；3122’：8th winding；3123’：9th winding；3124’：Tenth winding；

3125’：11st winding；3126’：12nd winding.

Specific embodiment

Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish Same or similar label represents same or similar element or the element with same or like function.Below with reference to The embodiment of Description of Drawings is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.

In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " on ", D score, "left", "right", The orientation or position relationship of the instruction such as " vertical ", " level ", " top ", " bottom ", " interior ", " outward ", " axial direction ", " radial direction ", " circumference " Be based on orientation shown in the drawings or position relationship, be for only for ease of description the present invention and simplify describe, rather than indicate or Imply signified device or element and must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that Limitation of the present invention.In the description of the invention, unless otherwise indicated, " multiple " is meant that two or more.

In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase Company ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can Being to mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi Two connections of element internal.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this Concrete meaning in invention.

Compressor 100 according to embodiments of the present invention is described below with reference to Fig. 1-Fig. 5, compressor 100 can be frequency conversion pressure Contracting machine.In description below the application, illustrated so that compressor 100 is as frequency-changeable compressor as an example.Certainly, the skill of this area Art personnel are appreciated that compressor 100 can also be other types of compressor, and are not limited to frequency-changeable compressor.

As shown in Figure 1 and Figure 4, compressor 100 according to embodiments of the present invention, including housing 1, compression mechanism 2 and forever Magnetic-synchro motor 3.In the following description, illustrated so that permagnetic synchronous motor 3 is for concentration six groove quadrupole motors of volume as an example.Can To understand, permagnetic synchronous motor 3 can also be by the way of volume be distributed, and the slot number and number of poles of permagnetic synchronous motor 3 can also The adaptive change according to different types of motor, the present invention is not particularly limited to this.

Reference picture 1 and Fig. 4, compression mechanism 2 and permagnetic synchronous motor 3 are each provided in housing 1, specifically, compression mechanism 2 Arranged about 3 with permagnetic synchronous motor, and compression mechanism 2 is located at the lower section of permagnetic synchronous motor 3.Compression mechanism 2 includes bent axle 21, the upper end of bent axle 21 extend upwardly to permagnetic synchronous motor 3 where space, and with the phase of rotor 32 of permagnetic synchronous motor 3 Even.Here, it is necessary to explanation, compression mechanism 2 other constitute such as base bearing, cylinder, supplementary bearing, piston and slide plates etc. with And operation principle has been well known to those skilled in the art, it is not detailed herein.

Permagnetic synchronous motor 3 includes stator 31 and rotor 32, and in the example of Fig. 1 and Fig. 4, rotor 32 is located at stator 31 Inside, rotor 32 is fixed with bent axle 21, in other words, rotor 32 be relative to bent axle 21 it is fixed, and rotor 32 relative to Stator 31 is rotatable, so that rotor 32 can be rotated with dynamic crankshaft 21 around rotation axis.Certainly, rotor 32 can also be located at The outside (not shown) of stator 31.

Stator 31 includes at least two sub- stators 311 that (for example, the above-below direction in Fig. 1 and Fig. 4) is set vertically, often Individual sub- stator 311 includes iron core 3111 and multiple windings, as shown in Fig. 2 iron core 3111 has the center for being suitable to accommodate rotor 32 Through hole 3112 and multiple stator slots, multiple stator slots along the circumferentially distributed of corresponding iron core 3111 and respectively with central through hole 3112 Connection, multiple windings pass through multiple stator slots to be wrapped on the iron core 3111.The axial direction of at least two sub- stators 311 it is corresponding around Group is in parallel.

Thus, by setting many sub- stators 311, and by the way of parallel winding wiring, with each section of air gap in axial direction The close change of magnetic, the winding inductance of each sub- stator 311 in space individually changes, eccentric to rotor 32 such that it is able to realize Piecewise and real-time adjustment is carried out, the effect corrected to the bias of rotor 32 on the whole is served.

Two sub- stators 311 are for example shown in the figure 2 example, and two sub- stators are arranged about 311, two sub- stators The number of the winding on 311 is identical, and corresponds in the vertical direction, that is to say, that the sub- stator 311 of top around component The surface of the winding of not underlying sub- stator 311.It is appreciated that the number of sub- stator 311 can also be three, four Even more than with the effect of preferably eccentricity correction.

Wherein, the corresponding winding parallel in the axial direction of two sub- stators 311, i.e., corresponding two windings use parallel connection up and down The mode of connection.Specifically, reference picture 2, it is assumed that the winding of the sub- stator 311 of top be circumferentially followed successively by the first winding 3121 to 6th winding 3126, the winding of the sub- stator 311 of lower section is circumferentially followed successively by the 7th winding 3121 ' to the 12nd winding 3126 ', And first, second winding 3122 corresponding up and down 3121 ' with the 7th winding of winding 3121 and the 8th winding corresponded to up and down 3122 ', the Three winding 3123 is corresponding up and down 3123 ' with the 9th winding, the 4th winding 3124 and the tenth winding are corresponded to up and down 3124 ', the 5th around Group 3125 is corresponding up and down 3125 ' with the 11st winding, the 6th winding 3126 is corresponded to the 12nd winding up and down 3126 ', during connection, By the first winding 3121 and the 7th winding 3121 ' and tie, the second winding 3122 and the 8th winding 3122 ' and tie, The winding 3123 ' of three winding 3123 and the 9th and tie, the 4th winding 3124 and the tenth winding 3124 ' and tie, the 5th around Group the 3125 and the 11st winding 3125 ' and tie, the 6th winding 3126 and the 12nd winding 3126 ' and tie, such as Fig. 3 institutes Show.

In assembling process, there is certain offset in stator 31, the gap of rotor 32, due to the small side air gap of correspondence air gap Magnetic is close big, and the big side of air gap is small with respect to air gap flux density, and permagnetic synchronous motor 3 uses three-phase symmetric winding, when three-phase windings are adopted During with the mode of connection in parallel, the big side winding inductance increase of correspondence air gap flux density causes input current to diminish, so that air gap Side winding less than normal produces radial direction magnetic pull less than the radial direction magnetic pull that the larger side winding of air gap is produced, fixed such that it is able to improve Son 31, the gap amount of unbalance of rotor 32.

Original state rotor 32 there is certain offset in assembling, the longitudinal direction of shown in Fig. 1 compressor 100 On section, it is assumed that the upper end of bent axle 21 is tilted to the left when initial, with reference to the winding distribution in Fig. 2 and Fig. 3 and connected mode, it is assumed that The left side of stator 31 top of Fig. 1 is the 7th winding 3121 ' for the first winding 3121, lower section, right side top is the 4th winding 3124, Lower section is the tenth winding 3124 ', and B1, B1', B2, B2' are respectively the air gap flux density of aforementioned four winding correspondence position, F1, F1', F4, F4' are respectively the radial direction magnetic pull of aforementioned four winding generation, and △ 1 is the radially uneven magnetic drawing of sub- stator 311 of top Power, △ 2 is the Unbalanced-magnetic-pull of sub- stator 311 of lower section.

Reference picture 1 simultaneously combines Fig. 2 and Fig. 3, the original state of sub- stator 311 of top：

∵ B1 ＞ B2 → F1 ＞ F4 △ 1=F1-F4；

After electrical power operation, the sub- stator 311 of top adjusts eccentric effect：

∵ B1 ＞ B2 → L1 ＞ L4 → I1 ＜ I4 → F1 ↓s ＆F4 ↑ → △ 1 ↓；

That is, the air gap between the winding 3121 of rotor 32 and first is smaller, the air gap between the winding 3124 of rotor 32 and the 4th Larger, thus, the air gap flux density of the air gap flux density more than upper right of upper left, the inductance L1 of the first winding 3121 is more than the 4th The inductance L4 of winding 3124, causes the input current I1 of the first winding 3121 less than the input current I4 of the 4th winding 3124, thus, first The radial direction magnetic pull F1 that winding 3121 is produced is less than the radial direction magnetic pull F4 that the 4th winding 3124 is produced, so that the sub- stator of top 311 Unbalanced-magnetic-pull △ 1 reduce, and the offset on the top of rotor 32 can be corrected.

Reference picture 1 simultaneously combines Fig. 2 and Fig. 3, the original state of sub- stator 311 of lower section：

∵ B1'＜ B2' → F1'＜ F4' △ 2=F4'-F1'

After electrical power operation, the sub- stator 311 of lower section adjusts eccentric effect：

∵ B1'＜ B2' → L1'＜ L4' → I1'＞ I4' → F1' ↑s ＆F4' ↓ → △ 2 ↓

That is, the air gap between the winding 3121 ' of rotor 32 and the 7th is larger, the gas between the winding 3124 ' of rotor 32 and the tenth Gap is smaller, and thus, the air gap flux density of the air gap flux density less than lower right of lower left, the inductance L1' of the 7th winding 3121 ' is less than The inductance L4' of tenth winding 3124 ', causes the input current I1' of the 7th winding 3121 more than the input current I4' of the tenth winding 3124, Thus, radial direction magnetic pull F4's of the radial direction magnetic pull F1' more than the generation of ten winding 3124 ' that seven winding 3121 ' is produced, from And the Unbalanced-magnetic-pull △ 2 of sub- stator 311 of lower section reduces, the offset of the bottom of rotor 32 can be corrected.

Fig. 5 is the transient changing curve of inductance L and radial direction magnetic pull F, from figure 5 it can be seen that radial direction magnetic pull F and electricity Feel substantially one curve of monotone decreasing of relation curve of L, inductance l values are bigger, and F is smaller for radial direction magnetic pull, radial direction magnetic is drawn The adjustment effect of power F is stronger.

In sum, the sub- stator 311 of block assembly is corrected to the offset of rotor 32 paragraph by paragraph, so as to serve Effect from entirety to the eccentricity correction of rotor 32.

Such as frequency-changeable compressor of compressor 100 according to embodiments of the present invention, block assembly is carried out by stator 31, and By the way of parallel winding wiring, with the axially each section of change of air gap flux density, the winding inductance of each straton stator 311 in space Individually change, realize the piecewise correction to the bias of rotor 32, it is achieved thereby that being carried out to the bias of rotor 32 on the whole The purpose of correction, while reducing electromagnetic noise.

An alternative embodiment of the invention, the groove area of the stator slot of at least two sub- stators 311 is identical, specifically For, stator laminating structure all same on the structure such as iron core 3111 of the iron core 3111 of at least two sub- stators 311 and big It is small also identical, wherein, iron core 3111 can be formed by multiple punchings are stacked, and the difference of at least two sub- stators 311 is corresponding The line footpath and the number of turn of each winding also all same, or each winding line footpath and the number of turn respectively along from the side of neighbouring compression mechanism The direction for being directed away from the side of compression mechanism increases successively.Thus, many sub- stators 311 use identical lamination structure, convenient The processing and assembling of sub- stator 311, improves production efficiency.The line footpath and the number of turn of winding have been those skilled in the art institute Know, repeat no more here.

Certainly, the invention is not restricted to this, according to another alternative embodiment of the present invention, at least two sub- stators 311 The groove area of stator slot can also be different.Reference picture 1 and Fig. 4, the lower end of bent axle 21 are considered fixed, and its upper end In vacant state, on direction from top to bottom, the offset of bent axle 21 gradually increases, in order to strengthen the sub- stator of top The ability of the 311 correction bias of rotor 32, can improve the stator groove area of the sub- stator 311 of top, for example, at least two sons The stator groove area of stator 311 is preferably along the direction from the side that compression mechanism 2 is directed away from adjacent to the side of compression mechanism 2 (for example, the direction in Fig. 1 and Fig. 4 from top to bottom) increases successively.

As shown in Figure 1 and Figure 4, the upper end of rotor 32 is big compared with the eccentric degree of its lower end, at least two sub- stators 311 can be with Using the different structures of iron core 3111 and winding parameter, wherein, it shall be guaranteed that the stator groove area of the sub- stator 311 of top is more than The stator groove area of the sub- stator 311 of lower section, in order to increase winding quantity or sectional area, so that increase inductance, to add The sub- stator 311 of strong top corrects the ability of the bias of rotor 32.Here it is possible to take following two modes：

Firstth, along the side for being directed away from from the side of neighbouring compression mechanism 2 compression mechanism 2 direction (for example, Fig. 1 and Direction in Fig. 4 from top to bottom), the line footpath of each winding of at least two sub- stators 311 increases successively.Reference picture 1 and Fig. 4, When group stator 311 is two, the groove area of the stator slot of the iron core 3111 of the sub- stator 311 of top can be increased, while increasing Plus the line footpath of the winding of the sub- stator 311 of side, so that the inductance of the sub- stator 311 of top is more than the sub- stator 311 of lower section Inductance, the correspondence air gap side winding inductance less than normal of sub- stator 311 of top further increases so that air gap side less than normal around The radial direction magnetic pull that the radial direction magnetic pull that group is produced further is produced less than the larger side winding of air gap, and corresponding air gap is bigger than normal Side winding inductance further reduce, so as to be that the radial direction magnetic pull that the larger side winding of air gap is produced further is more than air gap The radial direction magnetic pull that side winding less than normal is produced, and then enhance the ability that the sub- stator 311 of top corrects the bias of rotor 32.

Secondth, along the side for being directed away from from the side of neighbouring compression mechanism 2 compression mechanism 2 direction (for example, Fig. 1 and Direction in Fig. 4 from top to bottom), the number of turn of each winding of at least two sub- stators 311 increases successively.Reference picture 1 and Fig. 4, When group stator 311 is two, the groove area of the stator slot of the iron core 3111 of the sub- stator 311 of top can be increased, while increasing Plus the number of turn of the winding of the sub- stator 311 of side, so that sub- stator of the stator inductance of the sub- stator 311 of top more than lower section 311 inductance, the side winding inductance that the correspondence air gap of sub- stator 311 of top is less than normal further increases, so that air gap is less than normal The radial direction magnetic pull that the radial direction magnetic pull that side winding is produced further is produced less than the larger side winding of air gap, and corresponding gas Gap side winding inductance bigger than normal further reduces, further big so as to be the radial direction magnetic pull that the larger side winding of air gap is produced In the radial direction magnetic pull that air gap side winding less than normal is produced, and then enhance the correction bias of rotor 32 of sub- stator 311 of top Ability.

Certainly, in order to reach the purpose that the sub- stator 311 above strengthening corrects the ability of the bias of rotor 32, may also take on Other manner.For example, as shown in Figure 1 and Figure 4, the basis of the groove area of the stator slot of the sub- stator 311 above relative increase On, can also simultaneously increase the line footpath and the number of turn of winding, to reach the purpose of the inductance of sub- stator 311 above improving, in implementation The scheme of stating need to make to be carried out in the case of motor magnetic circuit is undersaturated.

Rotor 32 can use integrative-structure (as shown in Figure 1), it would however also be possible to employ segmental structure (as shown in Figure 4), segmentation The rotor 32 of assembling requires that axial restraint angle is identical with magnetizing direction.Reference picture 4, rotor 32 include it is axially disposed at least Two sub- rotors 321, the axial restraint angle and magnetizing direction all same of at least two sub- rotors 321, at least two sub- rotors 321 correspond with least two sub- stators 311.Here, it is necessary to explanation, " axial restraint angle ", " magnetizing direction " are It is well known to those skilled in the art, is not detailed herein.

Two sub- rotors 321 are for example shown in the example of fig. 4, and two sub- rotors are arranged about 321, and two sons turn The mode of hot jacket can be respectively adopted for son 321 and bent axle 21 is fixed, wherein, it shall be guaranteed that two axial hot jackets of sub- rotor 321 Angle is identical with magnetizing direction, can respectively to corresponding so as to distinguish corresponding two sub- stators 311 with two sub- rotors 321 The offset of sub- rotor 321 is corrected, and rectification effect is good.It is appreciated that the number of sub- rotor 321 can also for three, four It is individual even more than, with preferably eccentricity correction act on.

On the longitudinal cross-section of compressor 100 shown in fig. 4, it is assumed that the upper end of bent axle 21 is tilted to the left when initial, tie Close winding distribution and the connected mode in Fig. 2 and Fig. 3, it is assumed that the left side of stator 31 top of Fig. 4 is for the first winding 3121, lower section 7th winding 3121 ', right side top is the tenth winding 3124 ' for the 4th winding 3124, lower section, and B1, B1', B2, B2' are respectively The air gap flux density of aforementioned four winding correspondence position, the radial direction magnetic that F1, F1', F4, F4' are respectively the generation of aforementioned four winding draws Power, △ 1 is the Unbalanced-magnetic-pull of sub- stator 311 of top, and △ 2 is the Unbalanced-magnetic-pull of sub- stator 311 of lower section.

Reference picture 4 simultaneously combines Fig. 2 and Fig. 3, the original state of sub- stator 311 of top：

∵ B1 ＞ B2 → F1 ＞ F4 △ 1=F1-F4；

After electrical power operation, the sub- stator 311 of top adjusts eccentric effect：

∵ B1 ＞ B2 → L1 ＞ L4 → I1 ＜ I4 → F1 ↓s ＆F4 ↑ → △ 1 ↓；

That is, the air gap between the winding 3121 of sub- rotor 321 and first of top is smaller, and the sub- rotor 321 and the 4th around Air gap between group 3124 is larger, thus, the air gap flux density of the air gap flux density more than upper right of upper left, the first winding 3121 inductance L1 are more than the inductance L4 of the 4th winding 3124, cause the input current I1 of the first winding 3121 defeated less than the 4th winding 3124 Enter electric current I4, thus, the radial direction magnetic pull F1 that the first winding 3121 is produced is less than the radial direction magnetic pull that the 4th winding 3124 is produced F4, so that the Unbalanced-magnetic-pull △ 1 of sub- stator 311 of top reduces, can enter to the offset of the sub- rotor 321 of top Row correction.

Reference picture 4 simultaneously combines Fig. 2 and Fig. 3, the original state of sub- stator 311 of lower section：

∵ B1'＜ B2' → F1'＜ F4' △ 2=F4'-F1'

After electrical power operation, the sub- stator 311 of lower section adjusts eccentric effect：

∵ B1'＜ B2' → L1'＜ L4' → I1'＞ I4' → F1' ↑s ＆F4' ↓ → △ 2 ↓

That is, the air gap between the winding 3121 ' of sub- rotor 321 and the 7th of lower section is larger, and the sub- rotor 321 and the tenth around Air gap between group 3124 ' is smaller, thus, the air gap flux density of the air gap flux density less than lower right of lower left, the 7th winding 3121 ' inductance L1' are less than the inductance L4' of the tenth winding 3124 ', cause the input current I1' of the 7th winding 3121 to be more than the tenth winding 3124 input current I4', thus, the radial direction magnetic pull F1' that seven winding 3121 ' is produced is produced more than ten winding 3124 ' Radial direction magnetic pull F4', so that the Unbalanced-magnetic-pull △ 2 of sub- stator 311 of lower section reduces, can be to the sub- rotor of lower section 321 offset is corrected.

Further, every sub- stator 311 also includes：Two insulating supports (not shown), two insulating support difference The axial two ends of corresponding iron core 3111 are located at, wherein being fixed by insulating support between two adjacent sub- stators 311.

For example, can be riveted together by public neutral end between two adjacent sub- stators 311.Specifically, it is false The winding leading-out wire of the upper end of sub- stator 311 of the side of setting radially is drawn, and is fixed on the sub- stator 311 by pressure-type neutral terminal On the insulating support at end, in this pressure-type neutral terminal, lower surface has identical structure, i.e. both sides all with crimping function, this When winding leading-out wire and the neutral terminal turn on；And the neighbouring sub- stator 311 and the sub- stator above the sub- stator 311 311 lower end can be using the structure as the upper end of sub- stator 311 of above-mentioned lower section, the i.e. lower end of sub- stator 311 of top Winding leading-out wire is radially drawn, and the insulation branch of the lower end of sub- stator 311 is fixed in by the opposite side of pressure-type neutral terminal On frame, now winding leading-out wire is turned on the neutral terminal, and axially the winding of upper same phase passes through this public neutral terminal Conducting.For two sub- stator components 311 are preferably fixed together above and below making, public neutral terminal can be crimped with Two insulating end plates on wedge-shaped buckle is set, make, lower two sub- stators 311 are crimping conducting by public neutral terminal Meanwhile, corresponding two insulating supports is fixed together by wedge-shaped buckle, so that the sub- stator of top and bottom is more It is fixed together well.

The compressor 100 according to multiple embodiment of the invention is described in detail referring to Fig. 1-Fig. 4.

Embodiment one,

In the present embodiment, as shown in Figure 1-Figure 3, motor 3 includes stator 31 and is rotatably arranged at its internal rotor 32, rotor 32 is fixed with bent axle 31, and rotor 32 uses overall structure.

Reference picture 1- Fig. 3, stator 31 includes two sub- stators 311 setting up and down, and every sub- stator 311 includes iron core 3111 and six windings, six windings are wrapped on corresponding iron core 3111, six windings of the sub- stator 311 of top and lower section Six windings of sub- stator 311 correspond in the vertical direction and simultaneously tie.Iron core 3111 can be stacked by multiple punchings Form.

Wherein, the sub- stator 311 of top (is wrapped with the sub- stator 311 of lower section using identical lamination structure and winding parameter Include winding wire diameter and umber of turn).Thus, the structure of two sub- stators 311 is identical, easy to process, and efficiency of assembling is high, and reduces Cost.

Embodiment two,

The present embodiment is roughly the same with the structure of embodiment one, and wherein identical part uses identical reference, no It is only that with part：The winding parameter of upper and lower two sub- stators is different.

In the present embodiment, because the upper end of rotor 32 (i.e. away from one end of compression mechanism 2) is big compared with its lower end eccentric degree, The sub- stator 311 of top and the sub- stator 311 of lower section use identical lamination structure and different winding parameters.Wherein, top The lower of sub- stator 311 sub- stator 311 winding wire diameter increase or umber of turn increase, in order to increase inductance, The ability of the bias of rotor 32 is corrected so as to the sub- stator 311 for strengthening top.

Embodiment three,

The present embodiment is roughly the same with the structure of embodiment one, and wherein identical part uses identical reference, no It is only that with part：The groove area of the stator slot of upper and lower two sub- stators 311 is different.

In the present embodiment, because the upper end of rotor 32 (i.e. away from one end of compression mechanism 2) is big compared with its lower end eccentric degree, The sub- stator 311 of top and the sub- stator 311 of lower section use different lamination structure and winding parameter.Wherein, the son of top is determined The groove area increase of the stator slot of the sub- stator 311 of sub 311 lowers, increases winding wire diameter or umber of turn, purpose It is in order to increase inductance, so that the sub- stator 311 for strengthening top corrects the ability of the bias of rotor 32.

The compressor 100 of the present embodiment is roughly the same with the structure of rotor 32 in embodiment one, therefore no longer retouches in detail herein State.

Example IV,

As shown in figure 4, the present embodiment is roughly the same with the structure of embodiment one, wherein identical part is attached using identical Icon is remembered, be the difference is that only：Rotor 32 uses segmental structure.

In the present embodiment, reference picture 4, rotor 32 includes two sub- rotors 321 setting up and down, two sub- rotors 321 It is spaced apart from each other in the vertical direction and is fixed with bent axle 31, for example, is fixed by the way of hot jacket, two sub- rotors 321 correspond with two sub- stators 311 respectively.Wherein, two axial hot jacket angles of sub- rotor 321 and the mode that magnetizes are identical.

The compressor 100 of the present embodiment is roughly the same with the structure of stator 31 in embodiment one, therefore no longer retouches in detail herein State.

Embodiment five,

The present embodiment is roughly the same with the structure of embodiment three, and wherein identical part uses identical reference, no It is only that with part：Rotor 32 uses segmental structure.

In the present embodiment, rotor 32 includes two sub- rotors 321 setting up and down, and two sub- rotors 321 are in upper and lower It is spaced apart from each other and is fixed with bent axle 31 upwards, for example, being fixed by the way of hot jacket, two sub- rotors 321 is distinguished Corresponded with two sub- stators 311.Wherein, two axial hot jacket angles of sub- rotor 321 and the mode that magnetizes are identical.

The compressor 100 of the present embodiment is roughly the same with the structure of stator 31 in embodiment three, therefore no longer retouches in detail herein State.

Such as frequency-changeable compressor of compressor 100 according to embodiments of the present invention, by the stator 31 to permagnetic synchronous motor 3 Or stator 31, the segmentation group of rotor 32 are vertical, and by the way of many winding parallel wiring of sub- stator 311, realization was running To the eccentric effect corrected paragraph by paragraph of rotor 32 in journey.Wherein, eccentric institute is improved according to many axial arranged sub- stators 311 The difference for working, many sub- stators 311 can use different lamination structures, winding parameter, so as to preferably reach reduction Motor radial direction Reeb, and then reduce the purpose of electromagnetic noise.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ", The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example are described Structure, material or feature are contained at least one embodiment of the invention or example.In this manual, to above-mentioned term Schematic representation is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or spy Point can in an appropriate manner be combined in one or more any embodiments or example.

Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not Can these embodiments be carried out with various changes, modification, replacement and modification in the case of departing from principle of the invention and objective, this The scope of invention is limited by claim and its equivalent.

Claims (5)

1. a kind of compressor, it is characterised in that including：

Housing；Compression mechanism, the compression mechanism is located in the housing, and the compression mechanism includes bent axle；And

Permagnetic synchronous motor, the permagnetic synchronous motor includes stator and rotor, and the rotor is fixed with the bent axle, described fixed Attached bag includes the sub- stator of axially disposed at least two, and each described sub- stator includes iron core and multiple windings, on the iron core Multiple stator slots are formed with, the multiple winding is wrapped on the iron core through the multiple stator slot, described at least two The corresponding winding parallel in axial direction of sub- stator,

The groove area of the stator slot of at least two sub- stator is identical, the iron core of at least two sub- stator Structure is identical, and the line footpath and the number of turn of each winding are directed away from the pressure along from the side of the neighbouring compression mechanism respectively The direction of the side of contracting mechanism increases successively；Or

The groove area of the stator slot of at least two sub- stator is different, the stator slot of at least two sub- stator Groove area increase successively along the direction of the side for being directed away from the compression mechanism from the side of the neighbouring compression mechanism, edge The direction of the side of the compression mechanism is directed away from from the side of the neighbouring compression mechanism, at least two sub- stator The line footpath and/or the number of turn of each winding increase successively.

2. compressor according to claim 1, it is characterised in that when the stator slot of described at least two sub- stators When groove area is identical, the structure and the line footpath and the number of turn of each winding of the iron core of at least two sub- stator All same.

3. compressor according to claim 1 and 2, it is characterised in that the rotor includes axially disposed at least two Individual sub- rotor, the axial restraint angle and magnetizing direction all same of at least two sub- rotor, at least two sub- rotor Corresponded with described at least two sub- stators.

4. compressor according to claim 1, it is characterised in that each described sub- stator also includes：

Two insulating supports, described two insulating supports are respectively provided at the axial two ends of the corresponding iron core, wherein adjacent Fixed by the insulating support between two sub- stators.

5. compressor according to claim 1, it is characterised in that the rotor is located at the internal or external of the stator.