CN207612133U - Magneto and compressor - Google Patents
Magneto and compressor Download PDFInfo
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- CN207612133U CN207612133U CN201721855894.8U CN201721855894U CN207612133U CN 207612133 U CN207612133 U CN 207612133U CN 201721855894 U CN201721855894 U CN 201721855894U CN 207612133 U CN207612133 U CN 207612133U
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Abstract
The utility model provides a kind of magneto and applies its compressor, magneto to include：Rotor, stator core and stator winding, stator winding includes the multiple coils being connected, coil is arranged on stator core, coil includes first kind coil and the second class coil, stator winding is threephase stator winding, and at least three connectors, including the first connector, the second connector and third connector are equipped with per phase stator winding, the first connector and the second connector in every phase stator winding are arranged on first kind coil, are arranged on the second class coil per the third connector in phase stator winding；Wherein, it is connected with the second connector in the stator winding of adjacent phase per the first connector in phase stator winding；It is connected with first kind coil per the second class coil in phase stator winding, is connected with the third connector in corresponding three phase mains lead or the stator winding of other phases per the third connector in phase stator winding.Electric efficiency and noise reduction can be improved in magneto provided by the utility model.
Description
Technical field
The utility model is related to Compressor Technology field more particularly to a kind of magnetoes and compressor.
Background technology
In the existing rotary DC frequency-changeable compressor using magneto, there are harmonic waves in the magnetic potential generated per phase current
Magnetic potential, it is important to which low-order harmonic magnetic potential, the rotating harmonic magnetic potential of these harmonic magnetic potentials synthesis can increase the Wen Sheng of motor, increase
Motor noise reduces power factor, reduces efficiency.
In order to improve motor noise, the method for optimizing harmonic wave radial electromagnetic force is mostly used in industry at present.But the pole of motor
Slot coordinate once it is determined that, then the radial electromagnetic force of minimum order exists always, optimize the effect brought and be not obvious.In addition,
Harmonic wave radial electromagnetic force is to be interacted by harmonic flux density and generated, these harmonic flux densities equally can also influence electric efficiency.
Utility model content
The utility model aims to solve at least one of technical problems existing in the prior art or related technologies.
For this purpose, the first aspect of the utility model proposes a kind of magneto.
The second aspect of the utility model proposes a kind of compressor.
In view of this, it is according to the present utility model in a first aspect, provide a kind of magneto, including：Rotor；Stator iron
Core comprising：Stator body, stator body are in the form of a column；The quantity of stator tooth, stator tooth is at least one, stator tooth
Along the circumferentially-spaced distribution of stator body；And stator groove gap, stator groove gap are limited by two neighboring stator tooth；Permanent Magnet and Electric
Machine further includes：Stator winding, stator winding include the multiple coils being connected, and coil is arranged in stator groove gap and determines around being located at
On sub- double wedge, coil includes first kind coil and the second class coil, and stator winding is threephase stator winding, is set per phase stator winding
There are at least three connectors, including the first connector, the second connector and third connector, per the first connector and second in phase stator winding
Connector is arranged on first kind coil, is arranged on the second class coil per the third connector in phase stator winding；Wherein, per mutually fixed
The first connector in sub- winding is connected with the second connector in the stator winding of adjacent phase；Per the second class in phase stator winding
Coil is connected with first kind coil, per phase stator winding in third connector and corresponding three phase mains lead or other phases
Third connector in stator winding is connected.
Magneto provided by the utility model, the coil of stator winding include first kind coil and the second class coil,
In, from the point of view of different phase stator winding, the first connector on first kind coil and on the first kind coil of adjacent phase
Two connectors are connected, i.e., first kind coil is connected by the way of end to end between adjacent phase, that is, use Angle connection；The
Two class coils are connected with the first kind coil of same phase, when the second class coil passes through the first connector or the second connector and first kind line
Circle is when being connected, with the first kind coil shape of the second class coil of phase, first kind coil and the adjacent phase being connected simultaneously with the two
At star-like connection, when the second class coil is connected in first kind coil, then formed with the first kind coil of phase and the second class coil
Star-like connection, further, also there are two types of connections for the third connector on the second class coil, first, with corresponding three phase mains lead phase
Connection, as the terminals of power supply, second is that the third connector with other phases is connected, i.e., the star to be connected using tail tail between three-phase
Shape connects.The form that the utility model uses Angle connection and star-like connection is combined, compared to conventional single layer staggered form,
For Concentrical winding, stator winding copper loss and harmonic wave added losses can be reduced, improves electric efficiency, while can also obtain
Reduce the advantageous effect of motor oscillating noise.
In addition, according to the magneto in above-mentioned technical proposal provided by the utility model, can also have following additional
Technical characteristic：
In the above-mentioned technical solutions, it is preferable that the ratio of the number of turns N2 of the second class coil and the number of turns N1 of first kind coil
The value range of N2/N1 is 0.49≤N2/N1≤0.6；The bare wire diameter d2 and the bare wire of first kind coil of second class coil are straight
The value range of the ratio d2/d1 of diameter d1 is 1.1≤d2/d1≤1.6.
In the technical scheme, the relationship of the number of turns and bare wire diameter of two class coils is specifically defined respectively.In coil turn
When number is identical, the potential and magnetic potential that potential that the coil of Angle connection generates and magnetic potential are generated than the coil of star-like connection are low
1.732 times, induced potential and magnetic potential difference are caused, the number of turns of the coil (i.e. first kind coil) by promoting Angle connection has
The potential and magnetic potential difference for helping make up first kind coil, keep the potential of first kind coil and the second class coil and magnetic potential more equal
Weighing apparatus.Equal sized due to each stator groove gap, the value by limiting d2/d1 is more than 1, and the bare wire that can reduce first kind coil is straight
Diameter d1, accordingly to increase the number of turns N1 for the first kind coil being arranged in stator groove gap, to meet aforementioned the number of turns ratio.
In any of the above-described technical solution, it is preferable that the quantity T2's of the second class coil and quantity T1 of first kind coil
The value range of ratio T2/T1 is 0.4≤T2/T1≤1.
In the technical scheme, the quantity ratio for specifically defining the second class coil and first kind coil, when T2/T1 is 1
When, two class number of coilss are equal, ensure that the reliability of integrally-built balanced and magneto work；It limits under T2/T1
Limit value is 0.4, has not only avoided that two class number of coils differences are excessive to cause overall structure unbalance, but also number of coils setting can be improved
Flexibility.
In any of the above-described technical solution, it is preferable that when a coil across stator tooth quantity be more than or equal to three
When a, the quantity Z of stator groove gap and the number of pole-pairs P of rotor meet Z/P=6 or 12 or 16 or 18.
In the technical scheme, the ratio relation for defining the quantity Z and rotor number of pole-pairs P of stator groove gap, that is, define
The pole slot cooperation of magneto, the wherein number of pole-pairs of rotor is P, then the number of poles of rotor is 2P, i.e. the quantity of stator groove gap is to turn
3 times, 6 times, 8 times or 9 times of sub- number of poles, such as 4 pole, 12 slot motor, 4 pole, 24 slot motor, 4 pole, 36 slot motor, 6 pole, 18 slot motor, especially
It is the motor for the multiple that stator groove gap quantity is 4, and such motor can realize above-mentioned connection type, the magnetic for making stator winding generate
Gesture is evenly distributed, and helps to reduce harmonic wave rotating magnetic potential, reduces vibration noise.
In any of the above-described technical solution, it is preferable that the nominal torque T of magneto, the internal diameter Di of stator body and turn
The torque per unit volume TPV of son meets 5.18 × 10-7≤T×Di-3×TPV-1≤1.17×10-6, wherein the list of nominal torque T
Position is Nm, and the unit of internal diameter Di is mm, and the unit of torque per unit volume TPV is kNmm-3, torque per unit volume TPV's
Value range is 5kNmm-3≤TPV≤45kN·m·m-3。
In the technical scheme, the nominal torque T, the internal diameter Di of stator body and the unit of rotor of magneto are defined
The value range of the union variable of volumetric torque TPV also defines the value range of torque per unit volume TPV so that the permanent magnetism
Motor can meet the power demand of compressor field, accordingly for the compressor using the magneto, can effectively reduce
Stator winding copper loss and harmonic wave added losses improve electric efficiency, reduce motor oscillating noise.
In any of the above-described technical solution, it is preferable that the value range of the outer diameter D o of stator core be 60mm≤Do≤
160mm。
In the technical scheme, specifically define that the value range of the outer diameter D o of stator core, the lower limiting value ensure fixed
In the case that pilot trench gap quantity is certain, width is enough to be placed in the coil of enough the number of turns, it is ensured that the normal operation of magneto,
The upper limit value then avoid magneto it is oversized caused by space hold, adapt magneto to household and commercial refrigeration
Compressor in system.
In any of the above-described technical solution, it is preferable that the value range of the rated speed n of magneto be n >=
3600rpm。
In the technical scheme, the rated speed of Conventional permanent magnet motor is 3600rpm, the Permanent Magnet and Electric that the utility model limits
Machine can reach effective noise reduction when applied to high-revolving operating mode, be obviously improved the performance of high rotating speed magneto.
In any of the above-described technical solution, it is preferable that rotor includes rotor core and magnetic part, and rotor core includes inserting
The quantity of slot, slot is at least one, and whole slots are along the circumferentially-spaced distribution of rotor core, and magnetic part setting is in slot.
In the technical scheme, a kind of magnetic part plan of establishment of rotor is specifically defined.By adding on rotor core
Work slot can provide installation site for magnetic part, be convenient for the positioning and assembly of magnetic part.
In any of the above-described technical solution, it is preferable that rotor includes rotor core and magnetic part, and the quantity of magnetic part is more
A, in the form of sheets, the cross section of magnetic part is arc-shaped magnetic part, and magnetic part is attached at the outer wall of rotor core.
In the technical scheme, another magnetic part plan of establishment of rotor is specifically defined.By the magnetism of circular arc sheet
Part is attached at the outer wall of rotor core, can simplify the structure of rotor core, reduces rotor core manufacturing procedure.
In any of the above-described technical solution, it is preferable that rotor includes rotor core and magnetic part, and magnetic part is cylindrical in shape, magnetic
Property part is set on the outer wall of rotor core.
In the technical scheme, another magnetic part plan of establishment of rotor is specifically defined.By the magnetic part set of tubular
It is located on rotor core, on the one hand simplifies the structure of rotor core, reduce the manufacturing procedure of rotor core, on the other hand make
It obtains magnetic part to be as a whole set up directly on rotor core, convenient for assembly.
Second aspect according to the present utility model provides a kind of compressor, including as described in any of the above-described technical solution
Magneto.
Compressor provided by the utility model, including the magneto described in any of the above-described technical solution, therefore having should
Whole advantageous effects of magneto, details are not described herein.
The additional aspect and advantage of the utility model will become apparent in following description section, or new by this practicality
The practice of type is recognized.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the utility model will in the description from combination following accompanying drawings to embodiment
Become apparent and is readily appreciated that, wherein：
Fig. 1 be the utility model one embodiment in stator winding wiring schematic diagram；
Fig. 2 be the utility model second embodiment in stator winding wiring schematic diagram；
Fig. 3 be the utility model third embodiment in stator winding wiring schematic diagram；
Fig. 4 be the utility model the 4th embodiment in stator winding wiring schematic diagram；
Fig. 5 be the utility model the 5th embodiment in stator winding wiring schematic diagram；
Fig. 6 be the utility model the 6th embodiment in stator winding wiring schematic diagram；
Fig. 7 be the utility model the 7th embodiment in stator winding wiring schematic diagram；
Fig. 8 be the utility model the 8th embodiment in stator winding wiring schematic diagram；
Fig. 9 be the utility model the 9th embodiment in stator winding wiring schematic diagram；
Figure 10 be the utility model the tenth embodiment in stator winding wiring schematic diagram；
Figure 11 be the utility model one embodiment in compressor structural schematic diagram.
Wherein, the correspondence in Fig. 1 to Figure 11 between reference numeral and component names is：
40 compressors, 41 magnetoes, 411 rotors, 412 stator cores, 413 stator groove gaps, 414 stator winding, 415 lines
Circle, A1 the first connectors of the first phase, A2 the second connectors of the first phase, A3 the first phase third connectors, B1 the first connectors of the second phase, B2 second
The second connector of phase, B3 the second phase third connectors, the first connector of C1 third phases, the second connector of C2 third phases, C3 third phase thirds connect
Head, 42 shells, 43 bent axles, 44 cylinders, 45 pistons, 46 base bearings, 47 supplementary bearings, 50 gas-liquid separators.
Specific implementation mode
In order to be more clearly understood that the above objects, features, and advantages of the utility model, below in conjunction with the accompanying drawings and have
The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen
The feature in embodiment and embodiment please can be combined with each other.
Many details are elaborated in the following description in order to fully understand the utility model, still, this practicality
Novel to be implemented different from other modes described here using other, therefore, the scope of protection of the utility model is simultaneously
It is not limited by following public specific embodiment.
Referring to Fig. 1 to Figure 11 descriptions according to the magneto 41 and compressor described in the utility model some embodiments
40。
As shown in Figures 1 to 10, the embodiment of the utility model first aspect provides a kind of magneto 41, including：
Rotor 411, stator core 412 and stator winding 414；Stator core 412 includes stator body (not shown), stator tooth
(not shown) and stator groove gap 413, stator body is in the form of a column, circumferentially-spaced point along stator body of multiple stator tooths
Cloth, stator groove gap 413 are limited by two neighboring stator tooth；Stator winding 414 includes the multiple coils 415 being connected,
Coil 415 is arranged in stator groove gap 413 and around being located in stator tooth, coil 415 includes first kind coil and the second class line
Circle, stator winding 414 are threephase stator winding, are set per phase stator winding there are three connector, including the first connector, the second connector and
Third connector, specifically, including first the first connector of phase A1, first the second connector of phase A2, the first phase third connector A3, second
The first connector of phase B1, second the second connector of phase B2, the second phase third connector B3, the first connector of third phase C1, third phase second connect
Head C2, third phase third connector C3, often the first connector in phase stator winding and the setting of the second connector are on first kind coil, often
Third connector in phase stator winding is arranged on the second class coil, i.e., in every phase stator winding, the first connector and the second connector
Between coil 415 be first kind coil, remaining coil 415 be the second class coil；Wherein, it is connect per first in phase stator winding
Head is connected with the second connector in the stator winding of adjacent phase；Per the second class coil and first kind coil in phase stator winding
It is connected, per the third connector in phase stator winding and the third in corresponding three phase mains lead or the stator winding of other phases
Connector is connected.
The coil 415 of magneto 41 provided by the utility model, stator winding 414 includes first kind coil and the second class
Coil, wherein from the point of view of different phase stator winding, the first kind coil of the first connector and adjacent phase on first kind coil
On the second connector be connected, i.e., first kind coil is connected by the way of end to end between adjacent phase, that is, using angular
Connection；Second class coil is connected with the first kind coil of same phase, when the second class coil by the first connector or the second connector with
When first kind coil is connected, with the second class coil of phase, first kind coil and be connected simultaneously with the two the first of adjacent phase
Class coil forms star-like connection, when the second class coil is connected in first kind coil, then with the first kind coil of phase and the second class
Coil forms star-like connection, and further, also there are two types of connections for the third connector on the second class coil, first, with corresponding three-phase electricity
Source lead is connected, and as the terminals of power supply, second is that the third connector with other phases is connected, i.e., tail tail is used between three-phase
The star-like connection to connect.The form that the utility model uses Angle connection and star-like connection is combined, compared to conventional list
For layer staggered form, Concentrical winding, the copper loss and harmonic wave added losses of stator winding 414 can be reduced, improves electric efficiency,
Can also obtain simultaneously reduces the advantageous effect of motor oscillating noise.Wherein, the derivation of the magnetic potential of stator winding 414 is：
I1=I cos ω t
I2=I cos (ω t-30 °)
I3=I cos (ω t-120 °)
I4=I cos (ω t-150 °)
I5=I cos (ω t-240 °)
I6=I cos (ω t-270 °)
F1=f1 cosα+f3 cos3α+f5 cos5α+…
F2=f1 cos(α-30°)+f3 cos3(α-30°)+f5 cos3(α-30°)+…
F3=f1 cos(α-120°)+f3 cos3(α-120°)+f5 cos3(α-120°)+…
F4=f1 cos(α-150°)+f3 cos3(α-150°)+f5 cos3(α-150°)+…
F5=f1 cos(α-240°)+f3 cos3(α-240°)+f5 cos3(α-240°)+…
F6=f1 cos(α-270°)+f3 cos3(α-270°)+f5 cos3(α-270°)+…
F=F1(α,t)+F2(α,t)+F3(α,t)+F4(α,t)+F5(α,t)+F6(α,t)
=3f1Icos(α-ωt)+3f11Icos(11α+ωt)+3f13Icos(13α-ωt)+…+
3f(12n-11)Icos[(12n-11)α-ωt]+3f(12n-1)Icos[(12n-1)α+ωt]+…
Using the connection type of the stator winding of the utility model 414, armature field it can be seen from derivation of equation result
The harmonic wave rotating magnetic potential of low order is not present in side so that the performance using the magneto of this connection type is better than common three-phase
Permanent magnet motor.
As shown in Figure 1, giving the stator winding 414 of 4 pole, 24 slot motor in one embodiment of the utility model
A kind of connection type, 24 slots can accommodate 12 coils 415, per phase 4, wherein first phase the first connector A1 and the first phase the
There are two first kind coils between two connector A2, and there are two second between the first phase third connector A3 and first the first connector of phase A1
Class coil, the first phase third connector A3 are connected with corresponding three phase mains lead, the second phase stator winding and third phase stator
Winding also respectively connects in this way, and first phase the second connector A2 is connected with the first connector of third phase C1, the second connector of third phase
C2 is connected with second the first connector of phase B1, and second phase the second connector B2 is connected with first the first connector of phase A1, to form first
The Angle connection of class coil.
As shown in Fig. 2, giving the stator winding 414 of 4 pole, 24 slot motor in second embodiment of the utility model
Another connection type, 24 slots can accommodate 12 coils 415, per phase 4, wherein first phase the first connector A1 and the first phase
There are two first kind coil between second connector A2, there are two the between the first phase third connector A3 and first the first connector of phase A1
Two class coils, the second phase stator winding and third phase stator winding also respectively connect in this way, first phase the second connector A2 with
The first connector of third phase C1 is connected, and third phase the second connector C2 is connected with second the first connector of phase B1, second the second connector of phase B2
Be connected with first the first connector of phase A1, to form the Angle connection of first kind coil, three tie points of formation respectively with it is right
The three phase mains lead answered is connected, the first phase third connector A3, the second phase third connector B3 and third phase third connector C3 phases
Connection.
As shown in figure 3, giving the stator winding 414 of 4 pole, 36 slot motor in the third embodiment of the utility model
A kind of connection type, 36 slots can accommodate 18 coils 415, per phase 6, wherein first phase the first connector A1 and the first phase the
There are four first kind coils between two connector A2, and there are two second between the first phase third connector A3 and first the second connector of phase A2
Class coil, the first phase third connector A3 are connected with corresponding three phase mains lead, the second phase stator winding and third phase stator
Winding also respectively connects in this way, and first phase the second connector A2 is connected with the first connector of third phase C1, the second connector of third phase
C2 is connected with second the first connector of phase B1, and second phase the second connector B2 is connected with first the first connector of phase A1, to form first
The Angle connection of class coil.
As shown in figure 4, giving the stator winding 414 of 4 pole, 36 slot motor in the 4th embodiment of the utility model
Another connection type, 36 slots can accommodate 18 coils 415, per phase 6, wherein first phase the first connector A1 and the first phase
There are four first kind coils between second connector A2, have two between the midpoint of four first kind coils and the first phase third connector A3
A second class coil, the first phase third connector A3 are connected with corresponding three phase mains lead, the second phase stator winding and third
Phase stator winding also respectively connects in this way, and first phase the second connector A2 is connected with the first connector of third phase C1, third phase
Two connector C2 are connected with second the first connector of phase B1, and second phase the second connector B2 is connected with first the first connector of phase A1, to shape
At the Angle connection of first kind coil.
As shown in figure 5, giving the stator winding of 4 pole, 36 slot motor again in the 5th embodiment of the utility model
A kind of connection type, 36 slots can accommodate 18 coils, per phase 6, wherein between the first connector A1 and first the second connector of phase A2
There are four first kind coil, there are two the second class coil between the first phase third connector A3 and first the second connector of phase A2, second
Phase stator winding and third phase stator winding also respectively connect in this way, first phase the second connector A2 and the first connector of third phase
C1 is connected, and third phase the second connector C2 is connected with second the first connector of phase B1, and second phase the second connector B2 connects with the first phase first
Head A1 is connected, to form the Angle connection of first kind coil, the first phase third connector A3, the second phase third connector B3 and third
Phase third connector C3 is connected.
As shown in fig. 6, giving the stator winding 414 of 4 pole, 36 slot motor in the 6th embodiment of the utility model
Another connection type, 36 slots can accommodate 18 coils 415, per phase 6, wherein first phase the first connector A1 and the first phase
There are four first kind coils between second connector A2, have two between the midpoint of four first kind coils and the first phase third connector A3
A second class coil, the second phase stator winding and third phase stator winding also respectively connect in this way, first the second connector of phase
A2 is connected with the first connector of third phase C1, and third phase the second connector C2 is connected with second the first connector of phase B1, and the second phase second connects
Head B2 is connected with first the first connector of phase A1, to form the Angle connection of first kind coil, the first phase third connector A3, second
Phase third connector B3 is connected with third phase third connector C3.
As shown in fig. 7, giving the stator winding 414 of 4 pole, 36 slot motor in the 7th embodiment of the utility model
Another connection type, 36 slots can accommodate 18 coils 415, per phase 6, wherein first phase the first connector A1 and the first phase
There are four first kind coil between second connector A2, there are two the between the first phase third connector A3 and first the second connector of phase A2
Two class coils, the first phase third connector A3 are connected with corresponding three phase mains lead, and the second phase stator winding and third phase are fixed
Sub- winding also respectively connects in this way, and first phase the second connector A2 is connected with the first connector of third phase C1, and third phase second connects
Head C2 is connected with second the first connector of phase B1, and second phase the second connector B2 is connected with first the first connector of phase A1, thus formation the
The Angle connection of a kind of coil.
As shown in figure 8, giving the stator winding 414 of 4 pole, 36 slot motor in the 8th embodiment of the utility model
Another connection type, 36 slots can accommodate 18 coils 415, per phase 6, wherein first phase the first connector A1 and the first phase
There are four first kind coils between second connector A2, have two between the midpoint of four first kind coils and the first phase third connector A3
A second class coil, the first phase third connector A3 are connected with corresponding three phase mains lead, the second phase stator winding and third
Phase stator winding also respectively connects in this way, and first phase the second connector A2 is connected with the first connector of third phase C1, third phase
Two connector C2 are connected with second the first connector of phase B1, and second phase the second connector B2 is connected with first the first connector of phase A1, to shape
At the Angle connection of first kind coil.
As shown in figure 9, giving the stator winding of 4 pole, 36 slot motor again in the 9th embodiment of the utility model
A kind of connection type, 36 slots can accommodate 18 coils, per phase 6, wherein between the first connector A1 and first the second connector of phase A2
There are four first kind coil, there are two the second class coil between the first phase third connector A3 and first the second connector of phase A2, second
Phase stator winding and third phase stator winding also respectively connect in this way, first phase the second connector A2 and the first connector of third phase
C1 is connected, and third phase the second connector C2 is connected with second the first connector of phase B1, and second phase the second connector B2 connects with the first phase first
Head A1 is connected, to form the Angle connection of first kind coil, the first phase third connector A3, the second phase third connector B3 and third
Phase third connector C3 is connected.
As shown in Figure 10, the stator winding 414 of 4 pole, 36 slot motor is given in the tenth embodiment of the utility model
Another connection type, 36 slots can accommodate 18 coils 415, per phase 6, wherein first phase the first connector A1 and the first phase
There are four first kind coils between second connector A2, have two between the midpoint of four first kind coils and the first phase third connector A3
A second class coil, the second phase stator winding and third phase stator winding also respectively connect in this way, first the second connector of phase
A2 is connected with the first connector of third phase C1, and third phase the second connector C2 is connected with second the first connector of phase B1, and the second phase second connects
Head B2 is connected with first the first connector of phase A1, to form the Angle connection of first kind coil, the first phase third connector A3, second
Phase third connector B3 is connected with third phase third connector C3.
In one embodiment of the utility model, it is preferable that the circle of the number of turns N2 and first kind coil of the second class coil
The value range of the ratio N2/N1 of number N1 is 0.49≤N2/N1≤0.6；The bare wire diameter d2 of second class coil and first kind line
The value range of the ratio d2/d1 of the bare wire diameter d1 of circle is 1.1≤d2/d1≤1.6.
In this embodiment, the relationship of the number of turns and bare wire diameter of two class coils is specifically defined respectively.In coil turn
When identical, the potential and magnetic potential that potential that the coil of Angle connection generates and magnetic potential are generated than the coil of star-like connection are low by 1.732
Times, induced potential and magnetic potential difference are caused, the number of turns of the coil (i.e. first kind coil) by promoting Angle connection contributes to more
The potential and magnetic potential difference for mending first kind coil, keep the potential of first kind coil and the second class coil and magnetic potential more balanced, at this time
The value of N2/N1 preferably 0.577, even N1/N2 is 1.732.It is equal sized due to each stator groove gap 413, pass through and limits d2/
The value of d1 is more than 1, can reduce the bare wire diameter d1 of first kind coil, accordingly to increase be arranged in stator groove gap 413 first
The number of turns N1 of class coil, to meet aforementioned the number of turns ratio, it is preferable that d2/d1 1.316, even d1/d2 is 0.76.
In one embodiment of the utility model, it is preferable that the number of the quantity T2 and first kind coil of the second class coil
The value range for measuring the ratio T2/T1 of T1 is 0.4≤T2/T1≤1.
In this embodiment, the quantity ratio for specifically defining the second class coil and first kind coil, when T2/T1 is 1,
Two class number of coilss are equal, ensure that the reliability that integrally-built balanced and magneto 41 works；Limit the lower limit of T2/T1
Value is 0.4, has not only avoided that two class number of coils differences are excessive to cause overall structure unbalance, but also the spirit of number of coils setting can be improved
Activity.Specifically, in the embodiment shown in Figure 3 to Figure 6, every phase stator winding of 4 pole, 36 slot motor includes four first kind
Coil and two the second class coils, and a first kind coil, across eight stator tooths, a second class coil is across nine
In stator tooth or embodiment as shown in Figure 7 to 10, every phase stator winding of 4 pole, 36 slot motor includes four first kind
Coil and two the second class coils, and a first kind coil, across seven stator tooths, a second class coil is across nine
Stator tooth, the i.e. span of first kind coil are less than the span of the second class coil, and it is poor can to alleviate number of coils to a certain extent
Unbalance of structure caused by different improves the stability of product.
In one embodiment of the utility model, it is preferable that when a coil across the quantity of stator tooth be more than
When equal to three, the quantity Z of stator groove gap 413 and the number of pole-pairs P of rotor meet Z/P=6 or 12 or 16 or 18.
In this embodiment, the ratio relation for defining the quantity Z and rotor number of pole-pairs P of stator groove gap 413, that is, define
The pole slot cooperation of magneto, the wherein number of pole-pairs of rotor is P, then the number of poles of rotor is 2P, i.e. the quantity of stator groove gap 413 is
3 times, 6 times, 8 times or 9 times of rotor number of poles, such as 24 slot motor of 4 pole, 12 slot motor, Fig. 1 and 4 pole shown in Fig. 2, Fig. 3 to Figure 10
Shown in 4 pole, 36 slot motor, 6 pole, 18 slot motor, especially 413 quantity of stator groove gap be 4 multiple motor, such motor can
It realizes above-mentioned connection type, the magnetic potential that stator winding generates is made to be evenly distributed, help to reduce harmonic wave rotating magnetic potential, reduce vibration
Noise.
As shown in figure 11, in one embodiment of the utility model, it is preferable that the nominal torque T of magneto 41, determine
The internal diameter Di of sub- ontology and the torque per unit volume TPV of rotor 411 meet 5.18 × 10-7≤T×Di-3×TPV-1≤1.17×
10-6, wherein the unit of nominal torque T is Nm, and the unit of internal diameter Di is mm, and the unit of torque per unit volume TPV is kN
m·m-3, the value range of torque per unit volume TPV is 5kNmm-3≤TPV≤45kN·m·m-3。
In this embodiment, the nominal torque T of magneto 41, the internal diameter Di of stator body and rotor 411 are defined
The value range of the union variable of torque per unit volume TPV also defines the value range of torque per unit volume TPV so that should
Magneto 41 can meet the power demand of compressor field, accordingly for using the magneto 41 compressor 40,
The copper loss and harmonic wave added losses of stator winding 414 can be effectively reduced, electric efficiency is improved, reduces motor oscillating noise.
As shown in figure 11, in one embodiment of the utility model, it is preferable that the outer diameter D o's of stator core 412 takes
It is worth ranging from 60mm≤Do≤160mm.
In this embodiment, specifically define that the value range of the outer diameter D o of stator core 412, the lower limiting value ensure fixed
In the case that 413 quantity of pilot trench gap is certain, width is enough to be placed in the coil of enough the number of turns, it is ensured that magneto 41 it is normal
Operation, the upper limit value then avoid magneto 41 it is oversized caused by space hold, adapt magneto 41 to household
And the compressor 40 in business-use refrigrating system.
In one embodiment of the utility model, it is preferable that the value range of the rated speed n of magneto 41 is n
≥3600rpm。
In this embodiment, the rated speed of Conventional permanent magnet motor is 3600rpm, the magneto that the utility model limits
41 when applied to high-revolving operating mode, can reach effective noise reduction, is obviously improved the performance of high rotating speed magneto.
In one embodiment of the utility model, it is preferable that rotor 411 includes rotor core and magnetic part, rotor iron
Core includes slot, and the quantity of slot is at least one, and along the circumferentially-spaced distribution of rotor core, magnetic part is arranged to exist whole slots
In slot.
In this embodiment, a kind of magnetic part plan of establishment of rotor 411 is specifically defined.By adding on rotor core
Work slot can provide installation site for magnetic part, be convenient for the positioning and assembly of magnetic part.
In one embodiment of the utility model, it is preferable that rotor 411 includes rotor core and magnetic part, magnetic part
Quantity be it is multiple, in the form of sheets, the cross section of magnetic part is arc-shaped magnetic part, and magnetic part is attached at the outer wall of rotor core.
In this embodiment, another magnetic part plan of establishment of rotor 411 is specifically defined.By the magnetism of circular arc sheet
Part is attached at the outer wall of rotor core, can simplify the structure of rotor core, reduces rotor core manufacturing procedure.
In one embodiment of the utility model, it is preferable that rotor 411 includes rotor core and magnetic part, magnetic part
It is cylindrical in shape, magnetic part is set on the outer wall of rotor core.
In this embodiment, another magnetic part plan of establishment of rotor is specifically defined.The magnetic part of tubular is arranged
On rotor core, the structure of rotor core is on the one hand simplified, reduces the manufacturing procedure of rotor core, on the other hand makes
Magnetic part is set up directly on rotor core as a whole, convenient for assembly.
As shown in figure 11, the embodiment of the utility model second aspect provides a kind of compressor 40, including such as above-mentioned
Magneto 41 described in one embodiment.
Compressor 40 provided by the utility model, including the magneto 41 described in any of the above-described embodiment, therefore have
Whole advantageous effects of the magneto 41, details are not described herein.
Specifically, compressor 40 includes shell 42, and magneto 41 is located in shell 42, and bent axle is additionally provided in shell 42
43 and cylinder 44, cylinder 44 and magneto 41 are set on bent axle 43 simultaneously, are equipped with and are lived wherein between cylinder 44 and bent axle 43
Plug 45, the top and bottom end of cylinder 44 are respectively arranged with the base bearing 46 and supplementary bearing 47 of bent axle 43, cylinder 44, piston 45, master
Bearing 46 and supplementary bearing 47 enclose compression chamber jointly, and the low-pressure steam obtained after external gas-liquid separator 50 detaches enters
After the compression chamber of compressor 40, the rotary motion of magneto 41 is transferred to piston 45 through bent axle 43, and the low pressure in compression chamber is steamed
Vapour is the steam for being compressed to high temperature and pressure.
In the present invention, term " multiple " then refers to two or more, unless otherwise restricted clearly.Term
The terms such as " installation ", " connected ", " connection ", " fixation " shall be understood in a broad sense, for example, " connection " may be a fixed connection,
Can be detachably connected, or be integrally connected；" connected " can be directly connected, and can also pass through the indirect phase of intermediary
Even.For the ordinary skill in the art, it can understand above-mentioned term in the present invention as the case may be
Concrete meaning.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least the one of the utility model
In a embodiment or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment
Or example.Moreover, the particular features, structures, materials, or characteristics of description can be in any one or more embodiments or example
In can be combined in any suitable manner.
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 (11)
1. a kind of magneto, which is characterized in that including：
Rotor；
Stator core comprising：
Stator body, the stator body are in the form of a column；
The quantity of stator tooth, the stator tooth is at least one, and the stator tooth is between the circumferential direction of the stator body
Every distribution；And
Stator groove gap, the stator groove gap are limited by the two neighboring stator tooth；
The magneto further includes：
Stator winding, the stator winding include the multiple coils being connected, and the coil is arranged in the stator groove gap simultaneously
Around being located in the stator tooth, the coil includes first kind coil and the second class coil, and the stator winding is fixed for three-phase
Sub- winding, often stator winding described in phase is equipped at least three connectors, including the first connector, the second connector and third connector, per phase
First connector and second connector in the stator winding are arranged on the first kind coil, stator described in every phase
The third connector in winding is arranged on the second class coil；
Wherein, described second in first connector in stator winding described in every phase and the stator winding of adjacent phase connects
Head is connected；
The second class coil in stator winding described in per phase is connected with the first kind coil, stator winding described in every phase
In the third connector and the third connector phase in corresponding three phase mains lead or the stator winding of other phases
Connection.
2. magneto according to claim 1, which is characterized in that
The value range of the ratio N2/N1 of the number of turns N1 of the number of turns N2 of the second class coil and the first kind coil is 0.49
≤N2/N1≤0.6；
The value model of the bare wire diameter d2 of the second class coil and the ratio d2/d1 of the bare wire diameter d1 of the first kind coil
It encloses for 1.1≤d2/d1≤1.6.
3. magneto according to claim 2, which is characterized in that
The value range of the ratio T2/T1 of the quantity T1 of the quantity T2 of the second class coil and the first kind coil is 0.4
≤T2/T1≤1。
4. magneto according to claim 1, which is characterized in that
When a coil across the stator tooth quantity be more than or equal to three when, the quantity Z of the stator groove gap
Meet Z/P=6 or 12 or 16 or 18 with the number of pole-pairs P of the rotor.
5. magneto according to claim 1, which is characterized in that
The torque per unit volume TPV of the nominal torque T of the magneto, the internal diameter Di of the stator body and the rotor are full
Foot 5.18 × 10-7≤T×Di-3×TPV-1≤1.17×10-6, wherein the unit of the nominal torque T is Nm, the internal diameter
The unit of Di is mm, and the unit of the torque per unit volume TPV is kNmm-3, the value model of the torque per unit volume TPV
It encloses for 5kNmm-3≤TPV≤45kN·m·m-3。
6. magneto according to claim 1, which is characterized in that
The value range of the outer diameter D o of the stator core is 60mm≤Do≤160mm.
7. magneto according to claim 1, which is characterized in that the value model of the rated speed n of the magneto
It encloses for n >=3600rpm.
8. magneto according to any one of claim 1 to 7, which is characterized in that
The rotor includes rotor core and magnetic part, and the rotor core includes slot, and the quantity of the slot is at least one
A, all the slot is along the circumferentially-spaced distribution of the rotor core, and the magnetic part setting is in the slot.
9. magneto according to any one of claim 1 to 7, which is characterized in that
The rotor includes rotor core and magnetic part, and the quantity of the magnetic part is multiple, and the magnetic part is in the form of sheets, described
The cross section of magnetic part is arc-shaped, and the magnetic part is attached at the outer wall of the rotor core.
10. magneto according to any one of claim 1 to 7, which is characterized in that
The rotor includes rotor core and magnetic part, and the magnetic part is cylindrical in shape, and the magnetic part is set in the rotor iron
On the outer wall of core.
11. a kind of compressor, which is characterized in that include the magneto as described in any one of claims 1 to 10.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721855894.8U CN207612133U (en) | 2017-12-27 | 2017-12-27 | Magneto and compressor |
| EP18897730.0A EP3661018A4 (en) | 2017-12-27 | 2018-05-21 | Permanent magnet motor and compressor |
| JP2020520699A JP7200240B2 (en) | 2017-12-27 | 2018-05-21 | Permanent magnet motor and compressor |
| PCT/CN2018/087602 WO2019128051A1 (en) | 2017-12-27 | 2018-05-21 | Permanent magnet motor and compressor |
| US16/731,303 US11496007B2 (en) | 2017-12-27 | 2019-12-31 | Permanent magnet motor and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721855894.8U CN207612133U (en) | 2017-12-27 | 2017-12-27 | Magneto and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207612133U true CN207612133U (en) | 2018-07-13 |
Family
ID=62798289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721855894.8U Active CN207612133U (en) | 2017-12-27 | 2017-12-27 | Magneto and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207612133U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110875643A (en) * | 2018-08-30 | 2020-03-10 | 广东美芝精密制造有限公司 | Synchronous motor and compressor |
| CN110875665A (en) * | 2018-08-30 | 2020-03-10 | 广东美芝精密制造有限公司 | Synchronous motor and compressor |
-
2017
- 2017-12-27 CN CN201721855894.8U patent/CN207612133U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110875643A (en) * | 2018-08-30 | 2020-03-10 | 广东美芝精密制造有限公司 | Synchronous motor and compressor |
| CN110875665A (en) * | 2018-08-30 | 2020-03-10 | 广东美芝精密制造有限公司 | Synchronous motor and compressor |
| CN110875665B (en) * | 2018-08-30 | 2022-05-31 | 广东美芝精密制造有限公司 | Synchronous motor and compressor |
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