CN207504658U - Alternating-pole motor and compressor with same - Google Patents
Alternating-pole motor and compressor with same Download PDFInfo
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- CN207504658U CN207504658U CN201721708339.2U CN201721708339U CN207504658U CN 207504658 U CN207504658 U CN 207504658U CN 201721708339 U CN201721708339 U CN 201721708339U CN 207504658 U CN207504658 U CN 207504658U
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- pole motor
- air channel
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- alternately pole
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- 230000004888 barrier function Effects 0.000 claims description 47
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 241000276425 Xiphophorus maculatus Species 0.000 claims description 7
- 210000002421 cell wall Anatomy 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 abstract 2
- 230000004907 flux Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000011148 porous material Substances 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000003405 preventing effect Effects 0.000 description 3
- 230000003313 weakening effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
Classifications
-
- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2746—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets arranged with the same polarity, e.g. consequent pole type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model provides a pole motor in turn and have its compressor. The alternating-pole motor comprises a rotor, the rotor comprises a plurality of sections of sub-rotors, the plurality of sections of sub-rotors are connected along the axis direction of the rotor, the rotor further comprises a blocking part, and the blocking part is arranged between the two adjacent sub-rotors. The utility model discloses the comparatively serious problem of magnetic leakage in the alternating current motor among the prior art has been solved effectively.
Description
Technical field
The utility model is related to technical field of motors, in particular to a kind of alternately pole motor and with its compression
Machine.
Background technology
8 traditional pole permanent magnet motors have 8 permanent magnets, and 8 permanent magnets are around the centrally disposed of rotor core, adjacent
Permanent magnet there is the different direction of magnetizations, then from the magnetic line of force that one piece of permanent magnet N pole is sent out via reaching phase after stator core
The S poles of adjacent permanent magnet.One magnetic line of force passes through at least two permanent magnets in the loop.Therefore, the operating point of permanent magnet is higher,
Permanent magnet increases motor cost using insufficient.
In the prior art, to solve the above-mentioned problems, there is a kind of segmented Consequent pole permanent magnet motor, multipiece rotor
It is axially connected together.Specifically, still by taking 8 pole motors as an example, only 4 permanent-magnet poles, and adjacent permanent magnet has thereon
The identical direction of magnetization.Have permanent magnet mounting groove is known as permanent-magnet pole, and the soft magnetic materials between two permanent magnet mounting grooves is by forever
Magnetic pole is magnetized into and the opposite polarity polarity of permanent-magnet pole.
However, the permanent magnet end of the alternating pole motor of segmented and the rotor core of another section of rotor are in direct contact, leakage
Magnetic-path magnetic resistance very little, brow leakage increased dramatically, and thereby reduce the output torque of motor, reduce the operation effect of motor
Rate.
Utility model content
It is existing to solve the main purpose of the utility model is that providing a kind of alternately pole motor and with its compressor
Replace the problem of leakage field is more serious in the motor of pole in technology.
To achieve these goals, one side according to the present utility model provides a kind of alternately pole motor, alternately pole
Motor include rotor, rotor include the sub- rotor of multistage, and the sub- rotor of multistage along rotor axis direction connect, rotor further include every
Stopper, barrier portion are arranged between two adjacent sub- rotors.
Further, barrier portion is platy structure.
Further, each sub- rotor includes rotor core and the permanent magnet being arranged in the mounting groove of rotor core, permanent magnetism
The ratio between the thickness t1 of body and the thickness t3 of platy structure satisfaction
Further, each sub- rotor includes rotor core and the permanent magnet being arranged in the mounting groove of rotor core, and edge turns
The axis direction of sub- iron core is provided with air channel, and barrier portion has the through-hole connected with air channel.
Further, air channel is the annular groove or one section of arc groove or multistage arc groove being coaxially disposed with rotor core.
Further, when air channel is one section of arc groove, have between the first end of arc groove and the second end of arc groove
There are distance t2, the ratio between the groove width w2 and distance t2 of arc groove satisfaction
Further, when air channel is multistage arc groove, there is distance t3, arc groove between adjacent two sections of arc grooves
Groove width w2 and the ratio between distance t3 satisfaction
Further, rotor core has the via passed through for shaft, and air channel is close to the cell wall of via and the hole of via
There is distance w1, air channel has distance w3 between the cell wall and permanent magnet of permanent magnet, and meets 3w3≤2w2 between wall
≤w1。
Further, the part between two arc grooves of arbitrary neighborhood is bridge part, and bridge part is relative to by bridging
The axial plane of the rotor core in portion is obliquely installed.
Further, air channel is polygon groove or one section of L-shaped groove or multistage L-shaped groove.
Further, air channel is multistage, and air channel is symmetrical arranged along the central axis of rotor core.
Further, rotor further includes non-magnetic structure, and non-magnetic structure filling is in the subregion of air channel or entirely
In portion region.
Further, non-magnetic structure is formed from a resin.
Further, the outer surface of barrier portion is aligned with the outer surface of rotor core.
Further, rotor further includes two end caps, and two end caps are separately positioned on the both ends of rotor core, fastener according to
It is secondary pass through an end cap, a cross-talk rotor, barrier portion and another cross-talk rotor after be fixed on another end cap.
Further, barrier portion and/or end cap are made of non-magnetic metal material.
Another aspect according to the present utility model provides a kind of compressor, including above-mentioned alternating pole motor.
Using the technical solution of the utility model, alternating pole motor includes rotor, and rotor includes the sub- rotor of multistage, and multistage
Sub- rotor is connected along the axis direction of rotor, and rotor further includes barrier portion, and barrier portion is arranged between two adjacent sub- rotors.
In this way, in alternately pole motor operation course, barrier portion can increase the magnetic resistance of leakage magnetic circuit between the sub- rotor of multistage, and then weaken
Leakage field degree between two adjacent cross-talk rotors weakens the leakage field degree of rotor, the final leakage field journey for weakening alternately pole motor
Degree, and then the output torque of alternately pole motor is improved, promote the working performance of alternately pole motor.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide a further understanding of the present invention, this practicality
Novel illustrative embodiments and their description do not form the improper restriction to the utility model for explaining the utility model.
In the accompanying drawings：
Fig. 1 shows the decomposition texture schematic diagram of the alternately rotor of the embodiment one of pole motor according to the present utility model；
Fig. 2 shows the vertical views of a cross-talk rotor of the rotor in Fig. 1；
Fig. 3 shows the vertical view of another cross-talk rotor of the rotor in Fig. 1；
Fig. 4 shows the vertical view of the barrier portion of the rotor in Fig. 1；
Fig. 5 shows the vertical view of the end cap of the rotor in Fig. 1；
Fig. 6 shows the vertical view of an alternately cross-talk rotor of the embodiment two of pole motor according to the present utility model；
Fig. 7 shows the vertical view of alternately another cross-talk rotor of the embodiment two of pole motor according to the present utility model；
Fig. 8 shows the vertical view of an alternately cross-talk rotor of the embodiment three of pole motor according to the present utility model；
Fig. 9 shows the vertical view of an alternately cross-talk rotor of the embodiment five of pole motor according to the present utility model；
Figure 10 shows alternating pole motor and the radial direction electromagnetic exciting of the prior art for replacing pole motor in the application
The comparison diagram of power；
Figure 11 is shown is not provided with barrier portion among the rotor that alternating pole motor, rotor in the application are not segmented and are segmented
Comparison diagram；
Figure 12 shows the leakage field sectional view of sectional type rotor in the prior art.
Wherein, above-mentioned attached drawing is marked including the following drawings：
10th, sub- rotor；11st, rotor core；111st, mounting groove；112nd, air channel；113rd, via；114th, bridge part；115、
Yoke portion；12nd, permanent magnet；20th, barrier portion；21st, medium pore；30th, end cap；31st, end cap slot；32nd, ending cover hole；33rd, end cap bridge part.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the application can phase
Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
It should be pointed out that unless otherwise specified, all technical and scientific terms used in this application have and the application
The normally understood identical meanings of person of an ordinary skill in the technical field.
In the utility model in the case where not making to illustrate on the contrary, the noun of locality such as " upper and lower " used is typically to be directed to
For direction shown in the drawings or on vertical, vertical or gravity direction；Similarly, for ease of understanding
And description, " left and right " is typically for shown in the drawings left and right；" inside and outside " refers to the profile relative to each component in itself
It is inside and outside, but the above-mentioned noun of locality is not intended to limit the utility model.
In order to solve the problems, such as that in the prior art leakage field is more serious in alternately pole motor, this application provides a kind of alternatings
Pole motor and with its compressor.
Embodiment one
As shown in Figure 1 to Figure 3, alternately pole motor includes rotor, and rotor includes the sub- rotor 10 of multistage, and the sub- rotor 10 of multistage
It is connected along the axis direction of rotor, rotor further includes barrier portion 20, and barrier portion 20 is arranged between the sub- rotor 10 of adjacent two.
Using the technical solution of the present embodiment, in alternately pole motor operation course, barrier portion 20 can increase multistage
The magnetic resistance of leakage magnetic circuit between rotor 10, and then weaken the leakage field degree between two adjacent cross-talk rotors 10, weaken the leakage of rotor
Magnetic degree, the final leakage field degree for weakening alternately pole motor, and then the output torque of alternately pole motor is improved, it is promoted alternately extremely electric
The working performance of machine.
As shown in Figure 1 and Figure 4, barrier portion 20 is platy structure.In this way, the barrier portion 20 of platy structure can reduce it is adjacent
The distance between sub- rotor 10, relatively increase the magnetic flux of rotor, increase intersegmental between two adjacent cross-talk rotors 10
Magnetic resistance.Above structure so that the structure of barrier portion 20 is simple, is easily worked, and then reduces the processing cost of alternately pole motor.
As shown in Figures 2 and 3, each sub- rotor 10 includes rotor core 11 and is arranged on the mounting groove 111 of rotor core 11
Interior permanent magnet 12, the ratio between the thickness t1 of permanent magnet 12 and the thickness t3 of platy structure satisfactionSpecifically,
When ratio is too small, to alternately pole motor axial leakage field there is no limit effect；When ratio is excessive, effective length of rotor core 11
Degree can shorten, and the magnetic flux for leading to rotor core is smaller.In this way, above-mentioned value range can effectively promote alternating pole motor
Air gap flux density, the output power of increase alternating pole motor, reduces the loss of alternately pole motor.
In the present embodiment, barrier portion 20 has the medium pore 21 passed through for shaft.In this way, above-mentioned setting causes alternately pole
The structure of motor is compacter, simply.
As shown in figure 4, each sub- rotor 10 includes rotor core 11 and is arranged in the mounting groove 111 of rotor core 11 forever
Magnet 12 is provided with air channel 112 along the axis direction of rotor core 11, and barrier portion 20 has what is connected with air channel 112 to lead to
Hole.Permanent magnet 12 has like pole with the part rotor iron core 11 positioned at 111 outside of mounting groove, which claims
For permanent-magnet pole.
As shown in figure 12, normally, since the assembling of the segmented of rotor can generate two parts leakage field：
First part leakage field B1 is the brow leakage of permanent magnet 12, although conventional, alternately there is also brow leakages for pole motor
B3, but due to only having air in its leakage path, so leakage magnetic flux very little.But the permanent magnet of the alternating pole motor of segmented
12 ends and the rotor core 11 of another cross-talk rotor 10 are in direct contact, and leakage path magnetic resistance very little, brow leakage, which leads to, drastically to be increased
Greatly；
Second part leakage field B1 is by the permanent magnet 12 of upper half cross-talk rotor 10, upper half cross-talk rotor yoke, shaft, lower half
10 yoke portion of cross-talk rotor, lower half cross-talk rotor 10 permanent magnet 12 after enter air gap, stator be formed into a loop.
Specifically, for above-mentioned first part leakage field B1, the motor of the present embodiment is set between two cross-talk rotors 10
Barrier portion 20 plays good effect to increase the magnetic resistance of leakage magnetic circuit.The radially-outer surface of barrier portion 20 has and sub- rotor
The shape that 10 outer surface is adapted, and outer profile is surrounded by the outer profile of rotor core 11, is ensured during rotor rotation and is determined
There is no interference for sub- iron core.The center of barrier portion 20 offers medium pore 21, in order to obtain sufficiently large refrigerant circulation area,
The overlay area of medium pore 21 should include the air channel 112 on rotor core 11.Part in addition to medium pore 21 is part or all of
12 mounting groove of permanent magnet is covered, to prevent permanent magnet 12 from moving axially.
For second part leakage field B2, the air channel circumferentially extended along sub- rotor 10 is provided in the yoke portion of sub- rotor 10
112, the magnetic line of force that sends out of guiding permanent magnet 12 more enters air gap between rotor and stator from alternately pole, reduces axial leakage
Magnetic.
Optionally, air channel 112 is arranged on the yoke portion 115 of rotor core 11.
Optionally, sub- rotor 10 is formed by impact style.Above-mentioned processing method is relatively simple, easy, and then reduces work
Make the labor intensity of personnel.
Specifically, mounting groove 111 is straight trough, and permanent magnet 12 is adapted with the shape of mounting groove 111.In this way, above-mentioned set
It puts so that alternately the rotor number of poles of pole motor is 4 poles, 6 poles, 8 poles etc., so that alternately pole motor adapts to different operating modes.
Optionally, mounting groove 111 is multiple, and multiple mounting grooves 111 surround the central axis pair of rotor core 11
Claim setting, permanent magnet 12 is multiple to be arranged in a one-to-one correspondence with multiple mounting grooves 111.As shown in Figures 2 and 3, in the present embodiment
In, mounting groove 111 is two, and two mounting grooves 111 are symmetrical arranged around the central axis of rotor core 11, permanent magnet
12 be two be arranged in a one-to-one correspondence with multiple mounting grooves 111.In this way, above-mentioned setting so that the rotor number of poles of alternately pole motor is
4 poles.
In the present embodiment, alternately the rotor of pole motor includes two cross-talk rotors 10, and is set between two cross-talk rotors 10
There is a barrier portion 20, the magnetizing direction of two permanent magnets 12 in same cross-talk rotor 10 is identical, in two different cross-talk rotors 10
The magnetizing direction of permanent magnet 12 is on the contrary, the permanent magnet 12 on two cross-talk rotors 10 is all along half of electricity of circumferential offset of rotor core 11
Phase/180 degree electrical angle.
Specifically, in upper cross-talk rotor 10, permanent magnet 12 will be positioned at 11 magnetic of part rotor iron core in 111 outside of mounting groove
N poles are turned to, then the part rotor iron core 11 positioned at 111 inside of mounting groove is S poles.In lower cross-talk rotor 10, permanent magnet 12 will
Part rotor iron core 11 positioned at 111 outside of mounting groove is magnetized to S poles, then positioned at the part rotor iron core of 111 inside of mounting groove
11 be N poles.Later, two cross-talk rotors 10 are linked together, and ensures that like pole is located on same axis direction.In this way,
Above-mentioned setting cause the magnetic flux that the permanent-magnet pole N poles of cross-talk rotor 10 generate and lower cross-talk rotor 10 replace pole N poles magnetic flux into
Row superposition ensure that each N pole-face or S pole-faces have identical magnetic flux in the alternately circumferential direction of pole motor, ensure that
The symmetry of adjacent pole eliminates abnormal radial direction electro-magnetic exciting force, weakens vibration and the noise of its generation.
As shown in Figures 2 and 3, air channel 112 is one section of arc groove being coaxially disposed with rotor core 11.Above structure
It is simple in structure, it is easily worked, and the magnetic line of force sent out from permanent magnet 12 is caused more to enter the stator of motor from alternately pole, with
The axial leakage field of alternately pole motor is reduced, improves the output torque of alternately pole motor.Meanwhile above-mentioned setting can ensure air channel
112 influence minimum to the magnetic resistance of main magnetic circuit.
In the other embodiment being not shown in the accompanying drawings, air channel is the annular groove being coaxially disposed with rotor core.Quilt
Two parts rotor core that annular groove separates is linked together by connection structure.In this way, above-mentioned setting causes more from forever
The magnetic line of force that magnet is sent out enters from alternately pole in the alternately stator of pole motor, and then improves the working efficiency of alternately pole motor.
As shown in Figures 2 and 3, between the first end and second end of arc groove have distance t2, the groove width w2 of arc groove with
The ratio between distance t2 satisfactionsIn this way, above-mentioned setting can make rotor core 11 have better mechanical strength, Jin Erti
Its high structural strength extends the service life of alternately pole motor.Meanwhile above-mentioned value range can efficiently reduce alternately extremely electricity
The axial leakage field of machine promotes the working performance of alternately pole motor, reduces energy loss.
As shown in Figures 2 and 3, rotor core 11 has the via 113 passed through for shaft, and air channel 112 is close to via 113
Cell wall and via 113 hole wall between have distance w1, air channel 112 is between the cell wall of permanent magnet 12 and permanent magnet 12
With distance w3, and meet 3w3≤2w2≤w1.In this way, in alternately pole motor rotation process, above-mentioned parameter range can protect
The mechanical strength of rotor core 11 is demonstrate,proved, prevents rotor core 11 from normal operation that is damaged and influencing alternately pole motor occurs, extends
The alternately service life of pole motor.
As shown in Figures 2 and 3, the part between the first end and second end of arc groove is bridge part 114, and bridge part
114 are positioned close to the position of permanent-magnet pole, and bridge part 114 is set along the radial direction of rotor core 11.In this way, bridge part 114 is set
It is more preferable in the magnetic-leakage preventing effect close to position of the position of permanent-magnet pole than being arranged on alternating pole, and then promote the defeated of alternating pole motor
Go out torque.
In the present embodiment, alternately the rotor of pole motor further includes non-magnetic structure, and non-magnetic structure filling is in air channel
In 112 subregion or whole region.In this way, above-mentioned setting is although can largely enhance the knot of alternately pole motor
Structure intensity extends the service life of alternately pole motor.
Optionally, non-magnetic structure is resin.Resin material is more universal, and with preferable magnetism absolutely, and then reduces
The alternately processing cost of pole motor.
As shown in Figure 1, the outer surface of barrier portion 20 is aligned with the outer surface of rotor core 11.In this way, barrier portion 20 is outer
Surface has the shape being adapted with the outer surface of rotor core 11, ensures that rotor will not be sent out in rotary course with stator core
Raw structure, movement interference.Specifically, barrier portion 20 is mounted between two cross-talk rotors 10, to intensity requirement very little, barrier portion 20
Outer surface be spliced by circular arc, be respectively one section of circular arc corresponding to each magnetic pole, with fillet or right angle between each section of circular arc
Connection, to the intensity effect very little of barrier portion 20.The structure of above structure is simple, is easily worked, realizes.
It should be noted that the outer surface of barrier portion 20 and the size relationship of the outer surface of rotor core 11 are without being limited thereto.
Optionally, the outer surface of rotor core 11 protrudes from the outer surface of barrier portion 20.
As shown in Figure 1 and Figure 5, rotor further includes two end caps 30, and two end caps 30 are separately positioned on rotor core 11
Both ends, fastener are fixed on separately after sequentially passing through an end cap 30, a cross-talk rotor 10, barrier portion 20 and another cross-talk rotor 10
On one end cap 30.Specifically, end cap 30 is primarily served the effect of the axial compression of rotor core 11, the outer surface of end cap 30
The shape being adapted with the outer surface with rotor core 11.The outer surface of end cap 30 is spliced by circular arc, corresponding to each
Magnetic pole is respectively one section of circular arc, and in order to ensure the structural strength of end cap 30, circular sliding slopes are used between each section of circular arc.
Specifically, in order to ensure enough circulation areas, the middle part of end cap 30 offers end cap slot 31 and ending cover hole 32, leads to
Orthographic projection of the air drain 112 on end cap slot 31 is located in end cap slot 31, and respectively in the pole center line position of permanent-magnet pole, alternating pole
Put place's setting end cap bridge part 33.In this way, end cap bridge part 33 ensure that end cap 30 has enough mechanical strengths, turned with compressing
Sub- iron core 11.Wherein, orthographic projection of the medium pore 21 of barrier portion 20 on ending cover hole 32 is located in ending cover hole 32.
Optionally, the number of end cap bridge part 33 is more than the number of bridge part 114 on rotor core 11, and then ensures end cap
The structural strength of bridge part 33 prevents end cap 30 from breakage occurs.
In the present embodiment, barrier portion 20 and end cap 30 are made of non-magnetic metal material.In this way, above-mentioned setting causes magnetic
The line of force can not pass through barrier portion 20 and end cap 30, and then promote the magnetic-leakage preventing effect of above structure.
Present invention also provides a kind of motor, including above-mentioned alternating pole motor.Motor includes stator, and stator includes stator
Iron core and stator winding, stator winding are wound on stator core.Wherein, stator core is overrided to form by soft magnetic materials thin slice.
In this way, in motor operation course, for rotor relative to stator rotation, barrier portion 20 prevents alternately pole motor generation leakage field phenomenon,
And then promote the working performance of motor.Specifically, using the motor abnormality electromagnetic force of the technical solution of the present embodiment by well
It eliminates, and by setting air channel 112 and barrier portion 20 so that magnetic line of force loss is preferably minimized, alternately the air gap of pole motor
Flux density is maximum, increases the electromagnetic torque of alternately pole motor, promotes alternately pole motor working performance.
Specifically, the modulus of abnormal electromagnetic force is related with the cooperation of frequency and pole slot.As shown in Figure 10.It is adopted in the present embodiment
With 9S6P structures, the abnormal electromagnetic force frequency is 9 frequencys multiplication and 27 frequencys multiplication, using the radial direction of the motor of the technical solution in the present embodiment
The radial direction electro-magnetic exciting force of the motor of electro-magnetic exciting force than in the prior art reduces very much, so reduce motor vibration and
Noise improves user experience.
As shown in figure 11, S1 represents motor when the rotor of alternately pole motor is not segmented (i.e. conventional alternately pole motor) in figure
For electromagnetic torque with the change curve of electric current, S2 represents that the electromagnetic torque of the alternating pole motor of the application is bent with the variation of electric current
Line, S3 represent to be not provided among the rotor of segmentation to replace the electricity of pole motor during the air channel 112 on barrier portion and rotor punching
Magnetic torque is with the change curve of electric current.It can be seen from the figure that replacing during with being not provided with barrier portion among the rotor of segmentation
Pole motor is compared, and the alternating pole motor in the present embodiment can increase electromagnetic torque, and then promotes the output effect of alternately pole motor
Rate.
Embodiment two
Alternating pole motor in embodiment two and embodiment one difference lies in：The structure of air channel 112 is different.
Optionally, air channel 112 is the multistage arc groove being coaxially disposed with rotor core 11.As shown in Figure 6 and Figure 7, lead to
Air drain 112 is two sections of arc grooves being coaxially disposed with rotor core 11.The structure of above structure is simple, is easily worked, and causes
The magnetic line of force sent out from permanent magnet 12 more enters air channel 112 from alternately pole, to reduce the axial leakage field of alternately pole motor,
Improve the output torque of alternately pole motor.
As shown in Figure 6 and Figure 7, there is the ratio between distance t3, the groove width w2 and distance t3 of arc groove completely between two sections of arc grooves
FootIn this way, above-mentioned setting can make rotor core 11 have better mechanical strength, and then it is strong to improve its structure
Degree extends the service life of alternately pole motor.Meanwhile above-mentioned value range can efficiently reduce the axial leakage of alternately pole motor
Magnetic promotes the working performance of alternately pole motor, reduces energy loss.
As shown in Figure 6 and Figure 7, the part between two arc grooves is bridge part 114, and bridge part 114 is along rotor core 11
Radial direction setting.Above-mentioned setting can improve the structural strength of rotor core 11, the service life of Extending Rotor iron core 11.
As shown in Figure 6 and Figure 7, air channel 112 is symmetrical arranged along the central axis of rotor core 11.Specifically, air channel
112 are symmetrical arranged about pole center line (d axis) and adjacent pole center line (q axis), so that on two cross-talk rotors 10
The shape of two air channels 112 shifted to install is coincide, and to obtain maximum circulation area, improves the heat exchange of alternately pole motor
Performance.
Embodiment three
Alternating pole motor in embodiment three and embodiment two difference lies in：The structure of bridge part 114 is different.
As shown in figure 8, part between the first end and second end of arc groove is bridge part 114, bridge part 114 relative to
It is obliquely installed by the axial plane of the rotor core 11 of bridge part 114.In this way, above-mentioned setting enables to bridge part 114
Length bigger, and then further promote magnetic-leakage preventing effect.
Example IV
Alternating pole motor in example IV and embodiment one difference lies in：The structure of air channel 112 is different.
In the present embodiment, air channel is polygon groove.The structure of above structure is simple, is easily worked, and causes from forever
The magnetic line of force that magnet is sent out more enters air channel from alternately pole, to reduce the axial leakage field of alternately pole motor, improves alternating
The output torque of pole motor.Meanwhile above-mentioned setting can ensure that air channel influences minimum to the magnetic resistance of main magnetic circuit.
Embodiment five
Alternating pole motor and example IV in embodiment five difference lies in：The structure of air channel 112 is different.
Optionally, air channel 112 is multistage L-shaped groove, and many-section desiccation slot 112 is symmetrical along the central axis of rotor core 11
Setting.As shown in figure 9, air channel 112 is and 11 two sections of L-shaped grooves of rotor core.The structure of above structure is simple, is easily worked,
And the magnetic line of force sent out from permanent magnet 12 is caused more to enter the stator of motor from alternately pole, to reduce the axis of alternately pole motor
To leakage field, the output torque of alternately pole motor is improved.
Specifically, air channel 112 is symmetrical arranged about pole center line (d axis) and adjacent pole center line (q axis), and then
So that the shape of shift to install two air channels 112 on two cross-talk rotors 10 is coincide, to obtain maximum circulation area, change
The heat exchange performance of kind alternately pole motor.
In the other embodiment being not shown in the accompanying drawings, air channel is one section of L-shaped groove.
It can be seen from the above description that the above embodiments of the present invention achieve the following technical effects：
In alternately pole motor operation course, barrier portion can increase the magnetic resistance of leakage magnetic circuit between the sub- rotor of multistage, and then
Weaken the leakage field degree between two adjacent cross-talk rotors, weaken the leakage field degree of rotor, the final leakage for weakening alternately pole motor
Magnetic degree, and then the output torque of alternately pole motor is improved, promote the working performance of alternately pole motor.
Obviously, above-mentioned described embodiment is only the embodiment of the utility model part rather than the reality of whole
Apply example.Based on the embodiment in the utility model, those of ordinary skill in the art institute without making creative work
The every other embodiment obtained should all belong to the range of the utility model protection.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, work, device, component and/or combination thereof.
It should be noted that term " first " in the description and claims of this application and above-mentioned attached drawing, "
Two " etc. be the object for distinguishing similar, and specific sequence or precedence are described without being used for.It should be appreciated that it uses in this way
Data can be interchanged in the appropriate case, so that presently filed embodiment described herein can be in addition to illustrating herein
Or the sequence other than those of description is implemented.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (17)
1. a kind of alternately pole motor, which is characterized in that the alternately pole motor includes rotor, and the rotor includes the sub- rotor of multistage
(10), and sub- rotor (10) described in multistage connects along the axis direction of the rotor, and the rotor further includes barrier portion (20), institute
Barrier portion (20) is stated to be arranged between the sub- rotor (10) of adjacent two.
2. alternately pole motor according to claim 1, which is characterized in that the barrier portion (20) is platy structure.
3. alternately pole motor according to claim 2, which is characterized in that each sub- rotor (10) is including rotor core
(11) and the permanent magnet (12) that is arranged in the mounting groove (111) of the rotor core (11), the thickness of the permanent magnet (12)
The ratio between t1 and the thickness t3 of the platy structure satisfaction
4. alternately pole motor according to claim 1, which is characterized in that each sub- rotor (10) is including rotor core
(11) and the permanent magnet (12) that is arranged in the mounting groove (111) of the rotor core (11), along the rotor core (11)
Axis direction is provided with air channel (112), and the barrier portion (20) has the through-hole connected with the air channel (112).
5. it is according to claim 4 alternately pole motor, which is characterized in that the air channel (112) be and the rotor iron
The annular groove or one section of arc groove or multistage arc groove of core (11) coaxial arrangement.
6. alternately pole motor according to claim 5, which is characterized in that when the air channel (112) is one section of arc groove
When, there is between the second end of the first end of the arc groove and the arc groove distance t2, the groove width w2 of the arc groove with
The ratio between distance t2 satisfactions
7. alternately pole motor according to claim 5, which is characterized in that when the air channel (112) is multistage arc groove
When, there is between adjacent two sections of arc grooves distance t3, the ratio between the groove width w2 of the arc groove and the distance t3 satisfaction
8. alternately pole motor according to claim 7, which is characterized in that the rotor core (11) has to be passed through for shaft
Via (113), the air channel (112) close to the via (113) cell wall and the via (113) hole wall between have
There is distance w1, the air channel (112) is close to have distance between the cell wall of the permanent magnet (12) and the permanent magnet (12)
W3, and meet 3w3≤2w2≤w1.
9. it is according to claim 7 or 8 alternately pole motor, which is characterized in that two arc grooves of arbitrary neighborhood it
Between part for bridge part (114), the bridge part (114) is relative to the rotor core by the bridge part (114)
(11) axial plane is obliquely installed.
10. alternately pole motor according to claim 4, which is characterized in that the air channel (112) is polygon groove or one
Section L-shaped groove or multistage L-shaped groove.
11. alternately pole motor according to claim 4, which is characterized in that the air channel (112) is multistage, and described
Air channel (112) is symmetrical arranged along the central axis of the rotor core (11).
12. alternately pole motor according to claim 4, which is characterized in that the rotor further includes non-magnetic structure, described
Non-magnetic structure filling is in the subregion of the air channel (112) or whole region.
13. alternately pole motor according to claim 12, which is characterized in that the non-magnetic structure is formed from a resin.
14. it is according to claim 4 alternately pole motor, which is characterized in that the outer surface of the barrier portion (20) with it is described
The outer surface alignment of rotor core (11).
15. alternately pole motor according to claim 4, which is characterized in that the rotor further includes two end caps (30), and two
A end cap (30) is separately positioned on the both ends of the rotor core (11), and fastener sequentially passes through an end cap
(30), it is fixed on another institute after one section of sub- rotor (10), the barrier portion (20) and another section of sub- rotor (10)
It states on end cap (30).
16. alternately pole motor according to claim 15, which is characterized in that the barrier portion (20) and/or the end cap
(30) it is made of non-magnetic metal material.
17. a kind of compressor, which is characterized in that including the alternating pole motor described in any one of claim 1 to 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721708339.2U CN207504658U (en) | 2017-12-06 | 2017-12-06 | Alternating-pole motor and compressor with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721708339.2U CN207504658U (en) | 2017-12-06 | 2017-12-06 | Alternating-pole motor and compressor with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207504658U true CN207504658U (en) | 2018-06-15 |
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ID=62509420
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721708339.2U Active CN207504658U (en) | 2017-12-06 | 2017-12-06 | Alternating-pole motor and compressor with same |
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| Country | Link |
|---|---|
| CN (1) | CN207504658U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023419A (en) * | 2017-12-06 | 2018-05-11 | 珠海格力电器股份有限公司 | Alternating-pole motor and compressor with same |
-
2017
- 2017-12-06 CN CN201721708339.2U patent/CN207504658U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023419A (en) * | 2017-12-06 | 2018-05-11 | 珠海格力电器股份有限公司 | Alternating-pole motor and compressor with same |
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