CN206195492U - Stator duct spacer structure with reduce eddy current loss - Google Patents
Stator duct spacer structure with reduce eddy current loss Download PDFInfo
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- CN206195492U CN206195492U CN201621013354.0U CN201621013354U CN206195492U CN 206195492 U CN206195492 U CN 206195492U CN 201621013354 U CN201621013354 U CN 201621013354U CN 206195492 U CN206195492 U CN 206195492U
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Abstract
The utility model discloses a stator duct spacer structure with reduce eddy current loss, it is main unshakable in one's determination including split stator, radial ventilation ditch and duct spacer, wherein split stator is unshakable in one's determination distributes along the axial, be radial ventilation ditch between the adjacent split stator iron core, its duct spacer by distributing along the circumference forms, stator core includes stator tooth and stator slot, adjacent split stator stator tooth and stator slot one -to -one in the axial unshakable in one's determination, the winding has been placed in the stator slot, duct spacer installs between the stator tooth of adjacent split stator iron core, place the duct spacer of three each imbalance of root length degree between unshakable in one's determination every stator tooth of adjacent split stator, rectangular cross section linear type channel -section steel promptly, a streamlined channel -section steel of rectangular cross section and the streamlined channel -section steel in I -shaped cross -section, the structure can effectively change the cooling gas flow direction in the air conduits, reduces stator coil afterbody eddy current loss.
Description
Technical field
The utility model is related to a kind of with the stator ventilation steel channel structure for reducing eddy-current loss, and in particular to a kind of motor
Stator radial ventilation system, belongs to motor ventilation technical field.
Background technology
For the large-size machine using radial ventilation system, the loss of motor stator portion is mainly cold by Radial ventilation duct
But air flow outwards radiates.But, when cooling gas pass through Radial ventilation duct, because wind path section narrows suddenly, flow velocity
Become big；When cooling gas flow out from stator bar afterbody, due to the gas and the gas of stator bar afterbody of stator bar both sides
Rate of flow of fluid differs greatly, and causes stator coil afterbody to form vortex, and vortex middle part wind speed is minimum, has a strong impact on stator coil
The radiating of afterbody.If the aeration structure design of motor is unreasonable, cause motor local temperature rise too high or uneven, have a strong impact on
The service life of motor.
In motor radial ventilation system, ventilation steel channel typically uses linear pattern, V-type and many replicated structures.Chinese patent
Number it is the linear pattern stator ventilation steel channel described in 201220141957.4, although simple structure, but stator footpath can not be changed
To air duct interior air-flow direction, stator coil afterbody eddy-current loss is big；China Patent No. is the V-type described in 201520770017.5
Stator ventilation steel channel, although can change stator wind path flow direction, but exist wind path flow to unbalanced, stator bulk temperature compared with
It is high；The ventilation steel channel of many replicated structures described in China Patent No. 201410835452.1, due to its replicated structures, its structure is not
Smooth, cooling gas windmill loss in air duct is larger, and radiating effect is not good.In addition, either linear pattern channel-section steel, V-groove
The ventilation steel channel of steel or many replicated structures, section is square, and square ventilation steel channel mechanical performance is poor, and in air duct
Windmill loss is larger, is unfavorable for stationary part ventilation and heat.
Utility model content
Technology solve problem of the present utility model is：Overcome the deficiencies in the prior art, there is provided one kind can change wind path stream
To but can reduce windmill loss stator ventilation steel channel.
Technical solution of the present utility model is：A kind of stator ventilation steel channel structure with reduction eddy-current loss, it is main
To include sectionalized stator iron core (1), Radial ventilation duct (2) and ventilation steel channel (3), wherein sectionalized stator iron core (1) divides vertically
Cloth, its hop count n is determined by the external diameter of stator core (1), is n=D/55~D/50, and D is electric machine stator iron external diameter, adjacent
It is Radial ventilation duct (2) between sectionalized stator iron core (1), it is formed by circumferential ventilation steel channel (3), Radial ventilation duct
(2) axial width LdWith electric machine stator iron outer diameter D and axial length LfeIt is relevant, Ld=(0.1D+0.3Lfe)/55~(0.2D
+0.1Lfe)/35, stator core (1) includes stator tooth (4) and stator slot (5), the stator tooth of adjacent sectionalized stator iron core (1)
(4) corresponded in the axial direction with stator slot (5), winding is placed with stator slot (5), ventilation steel channel (3) is installed in adjacent point
Between the stator tooth (4) of section stator core (1), three are placed between each stator tooth of the adjacent sectional stator core (1)
Each unequal ventilation steel channel (3) of length, i.e., one square-section linear pattern channel-section steel, a streamlined channel-section steel in square-section and
The streamlined channel-section steel in root I-shaped cross-section, described square-section linear pattern channel-section steel width is L1, L1With stator facewidth btIt is relevant, deposit
In following relation：L1=bt/ 5~bt/ 3, the cross-sectional width of square-section linear pattern channel-section steel is L2, L2With square-section straight line type groove
Steel width L1It is relevant, L2=L1, section thickness L3With air duct axial width LdIt is relevant, there is following relation：L3=Ld；The square
The integrally-built cross-sectional width of the streamlined channel-section steel of tee section is L4, L4With stator facewidth btIt is relevant, there is following relation：L4=bt/5
~3bt/ 7, section thickness is L5, equally, L5With air duct axial width LdIt is relevant, there is following relation：L5=Ld, square-section
Streamlined channel-section steel width L6, L6Channel cross-section width L streamlined with square-section4It is relevant, L6=L4, the streamlined channel-section steel in square-section
Deflection distance r and angle of bend θ and stator facewidth btAnd stator tooth h highsIt is relevant, i.e. r=bt/ 6~bt/ 3,Wherein deflection distance r be streamlined channel-section steel maximum deflection point and two neighboring bending midpoint it
Between radial distance, angle of bend θ be midpoint between two neighboring bending tangent line and two neighboring bending midpoint line it
Between angle；The streamlined channel-section steel sole L wide in I-shaped cross-section7, its size and stator facewidth btIt is relevant, L7=1bt/ 7~
3bt/ 8, the streamlined channel-section steel sole thickness L in I-shaped cross-section10With air duct axial width LdIt is relevant, it is L10=Ld/ 10~Ld/ 7,
The streamlined channel-section steel web L wide in I-shaped cross-section9, its size and the streamlined channel-section steel sole L wide in I-shaped cross-section7It is relevant, it is L9=
L7/ 3~L7/ 2, the streamlined channel cross-section thickness in I-shaped cross-section is L8, its size and air duct axial width LdIt is relevant, i.e. L8=
Ld, I-shaped angle beta and the streamlined channel-section steel sole L wide in I-shaped cross-section7And the streamlined channel-section steel thickness L in I-shaped cross-section8It is relevant,
According to optimization design,Wherein I-shaped angle beta is channel-section steel I-shaped cross-section horizontal edge and hypotenuse
Between angle.The streamlined channel-section steel width L in I-shaped cross-section11, L11Channel-section steel sole wide L streamlined with I-shaped cross-section7It is relevant,
L11=L7, I-shaped cross-section streamlined channel-section steel deflection distance r and angle of bend θ and stator facewidth btAnd stator tooth h highsIt is relevant, i.e.,
R=bt/ 6~bt/ 3,Wherein deflection distance r be streamlined channel-section steel maximum deflection point with it is adjacent
Radial distances between two bending midpoints, angle of bend θ be between two neighboring bending the tangent line of midpoint with it is two neighboring
Angle between bending midpoint line.
Three channel-section steels of long, medium and short, wherein work are placed between each stator tooth (4) of the adjacent sectional stator core (1)
The streamlined channel-section steel of shaped sections is channel-section steel long, and the streamlined channel-section steel in square-section is middle channel-section steel, and square-section linear pattern channel-section steel is short
The streamlined channel-section steel long of channel-section steel, wherein I-shaped cross-section is made up of six bendings, and the streamlined middle channel-section steel in square-section is by five bendings
Composition.Each channel-section steel straight length and electric machine stator iron outer diameter D and stator tooth h highsIt is relevant, be：Channel-section steel straight length L longs1=
0.13(D-2hs(the D-2h of)~0.18s), middle channel-section steel straight length Ls2=0.1 (D-2hs(the D-2h of)~0.15s), short channel-section steel straight line
Length Ls3=0.09 (D-2hs(the D-2h of)~0.11s), in channel-section steel proximal ends, three channel-section steel distance Edge Distances unshakable in one's determination are ht1,
Length is 7mm~10mm, and it is h that channel-section steel is respectively with channel-section steel ultimate range long and minimum range in centre positiont2And ht3, ht2With
ht3Size and the streamlined channel-section steel deflection distance r in I-shaped cross-section, square-section linear pattern channel-section steel width L1And square-section streamline
Type groove steel width L6It is relevant, ht2=0.3L1+r-0.2L6~0.8L1+r-0.4L6, ht3=0.5L1+0.8r-0.7L6~
0.7L1-0.6r+0.3L6, channel-section steel center long and nearside tooth back gauge bt1With short channel-section steel center and nearside tooth back gauge
bt4It is equal, its distance and stator facewidth btAnd the streamlined channel-section steel deflection distance r in I-shaped cross-section is relevant, is bt1=bt4=0.15bt
+ 0.3r~0.18bt+ 0.4r, middle channel-section steel centre distance channel-section steel centre distance b longt2With the centre distance b apart from short channel-section steelt3Phase
Deng, and distance channel-section steel width L streamlined with square-section6, stator facewidth btAnd the streamlined channel-section steel deflection distance of i shaped cross section
R is relevant, bt2=bt3=0.5bt-0.3L6- 0.8r~0.5bt-0.55L6+ 0.2r, on the whole, channel-section steel is by period profile in whole
It is a cycle with three teeth in individual Radial ventilation duct, on three teeth in a cycle, the preferred mounting means of channel-section steel presses up time
Pin direction be followed successively by " the streamlined channel-section steel long in I-shaped cross-section ", " the streamlined middle channel-section steel in square-section ", " square-section linear pattern is short
Channel-section steel ", " the streamlined channel-section steel long in I-shaped cross-section ", " the streamlined middle channel-section steel in square-section ", " square-section linear pattern short channel-section steel ",
" square-section linear pattern short channel-section steel ", " the streamlined middle channel-section steel in square-section ", " the streamlined channel-section steel long in I-shaped cross-section ".
The utility model advantage compared with prior art is：Ventilating system described in the utility model and prior art
Compared to having the following effects that：Square-section channel-section steel is easy to process, but can not change the flow direction of cooling gas in ventilating duct,
Effectively combined by by square-section linear pattern channel-section steel, the streamlined channel-section steel of the streamlined channel-section steel in square-section and I-shaped cross-section, no
But coil afterbody eddy-current loss is effectively reduced, and windmill loss is substantially reduced in air duct, in addition, by changing channel-section steel quantity
And length distribution, strengthen motor radiating effect, and motor radiating efficiency increases by 15% or so.
Brief description of the drawings
Fig. 1 is electric machine stator iron aeration structure schematic diagram；
Fig. 2 is motor stator Radial ventilation duct schematic enlarged-scale view；
Fig. 3 is square-section linear pattern channel-section steel overall structure diagram；
Fig. 4 is the streamlined channel-section steel overall structure diagram in square-section；
Fig. 5 is the streamlined channel-section steel left view in square-section；
Fig. 6 is the streamlined channel-section steel overall structure diagram in I-shaped cross-section；
Fig. 7 is the top view of the streamlined channel-section steel in I-shaped cross-section；
Fig. 8 is the left view of the streamlined channel-section steel in I-shaped cross-section；
Fig. 9 is that stator between cog installs three length difference channel-section steel partial enlarged drawings；
Figure 10 is part A enlarged drawing in Fig. 9.
Specific embodiment
The utility model is elaborated below according to accompanying drawing preferred embodiment.
The parameter of electric machine that the present embodiment is related to：Frame diameter D=1260mm, Lfe=1340mm, stator facewidth bt=
19.3mm, stator tooth h highs=81.4mm.As shown in figure 1, described in the utility model a kind of with the stator for reducing eddy-current loss
Ventilation steel channel structure, mainly includes sectionalized stator iron core (1), Radial ventilation duct (2) and ventilation steel channel (3), wherein sectionalized stator
(1) unshakable in one's determination is axially distributed, and its hop count n is determined by the external diameter of stator core (1), is n=D/55~D/50, and D is motor stator
External diameter unshakable in one's determination, is Radial ventilation duct (2) between adjacent sectionalized stator iron core (1), and it is by circumferential ventilation steel channel (3)
Formed, the axial width L of Radial ventilation duct (2)dWith electric machine stator iron outer diameter D and axial length LfeIt is relevant, Ld=(0.1D+
0.3Lfe)/55~(0.2D+0.1Lfe)/35, stator core (1) includes stator tooth (4) and stator slot (5), and adjacent segmentation is determined
The stator tooth (4) and stator slot (5) of sub- iron core (1) are corresponded in the axial direction, and winding, ventilation slot are placed with stator slot (5)
Steel (3) by optimization design, can be segmented stator core between the stator tooth (4) of adjacent sectional stator core (1)
Hop count n=22.9~25.2, preferably 24, the axial length L of Radial ventilation ductd=9.6mm~11mm, preferably 10mm.
Existing motor stator ventilation steel channel structure is single, and windmill loss is big, and ventilation effect is not good, and do not take into full account groove
Guide functions of the steel to cooling gas.In order to more preferably improve ventilation effect, coil afterbody eddy-current loss, the utility model institute are reduced
Motor is stated using square-section linear pattern channel-section steel, the streamlined channel-section steel of the streamlined channel-section steel in square-section and I-shaped cross-section, and it is adjacent
Three each unequal channel-section steels of length, i.e., one square-section straight line are placed between each stator tooth of sectionalized stator iron core (1)
Type groove steel, a streamlined channel-section steel in square-section and a streamlined channel-section steel in I-shaped cross-section, its three-dimensional structure are as shown in Figure 2.
The rectangular cross-section of described square-section linear pattern channel-section steel (3), linear form extends, as shown in Figure 3.Rectangle
Section linear pattern channel-section steel width is L1, L1With stator facewidth btIt is relevant, there is following relation：L1=bt/ 5~bt/ 3, i.e. L1=
3.86mm~6.43mm, preferably 4.06mm.Square-section linear pattern channel cross-section is rectangle, and cross-sectional width is L2, L2Cut with rectangle
Face linear pattern channel-section steel width L1It is relevant, L2=L1, i.e. L2=4.06mm, section thickness L3With air duct axial width LdIt is relevant, deposit
In following relation：L3=Ld, i.e. L3=10mm.
The streamlined channel-section steel overall structure in square-section is as shown in figure 4, cross-sectional width is L4, L4With stator facewidth btIt is relevant, deposit
In following relation：L4=bt/ 5~3bt/ 7, i.e. L4=3.86mm~8.27mm, preferably 5.12mm.Section thickness is L5, equally, L5
With air duct axial width LdIt is relevant, there is following relation：L5=Ld, i.e. L5=10mm.In order to clearly describe square-section stream
The concrete structure of line style channel-section steel, takes channel-section steel left view for research object, as shown in figure 5, the streamlined channel-section steel width L in square-section6,
L6Channel cross-section width L streamlined with square-section4It is relevant, L6=L4, i.e. L6=5.12mm.The streamlined channel-section steel bending in square-section
Apart from r and angle of bend θ and stator facewidth btAnd stator tooth h highsIt is relevant, i.e. r=bt/ 6~bt/ 3,Then r=3.2mm~6.5mm, preferably 4mm, θ=14.7 °~27.8 °, preferably 17 °, wherein
Part shown in W represents a bending of channel-section steel in Fig. 5, and deflection distance r is the streamlined channel-section steel maximum deflection point in square-section and phase
Radial distance between adjacent two bendings midpoint, angle of bend θ is the tangent line and adjacent two of midpoint between two neighboring bending
Angle between the line of individual bending midpoint, the design ensure that maximum ventilation radiates while coil afterbody eddy-current loss is reduced
Effect.
The streamlined channel-section steel in I-shaped cross-section as shown in fig. 6, the channel-section steel complex structure, in order to clearly describe the channel-section steel knot
Structure, it is analysis object to take the streamlined channel-section steel top view in I-shaped cross-section and left view, and as shown in Figure 7 and Figure 8, wherein Fig. 7 is work
The streamlined channel-section steel top view of shaped sections, Fig. 8 is the streamlined channel-section steel left view in I-shaped cross-section.The I-shaped cross-section is streamlined
Channel cross-section is as shown in fig. 7, the streamlined channel-section steel sole L wide in I-shaped cross-section7, its size and stator facewidth btIt is relevant, L7=1bt/
7~3bt/ 8, i.e. L7=2.78mm~7.23mm, preferably 4.88mm, the streamlined channel-section steel sole thickness L in I-shaped cross-section10With ventilation
Ditch axial width LdIt is relevant, it is L10=Ld/ 10~Ld/ 7, i.e. L10=0.96mm~1.57mm, preferably 1.2mm, I-shaped section
Surface current line style channel-section steel web L wide9, its size and the streamlined channel-section steel sole L wide in I-shaped cross-section7It is relevant, it is L9=L7/ 3~L7/ 2,
That is L9=2.57mm~4.82mm, the mechanical performance of the streamlined channel-section steel in I-shaped cross-section, L are ensured for material-saving again9Preferably
4mm, the streamlined channel cross-section thickness in I-shaped cross-section is L8, its size and air duct axial width LdIt is relevant, i.e. L8=Ld, then L8
=10mm.I-shaped angle beta and the streamlined channel-section steel sole L wide in I-shaped cross-section7And the streamlined channel-section steel thickness L in I-shaped cross-section8Have
Close, according to optimization design,Then β=22.28 °~53.57 °, in order to reduce wind in ventilating duct
Abrasive wear, β is preferably 36 °, wherein I-shaped angle beta is the angle between channel-section steel I-shaped cross-section horizontal edge and hypotenuse.It is I-shaped
Gross section streamlines type groove steel (as shown in Fig. 8 left views) width L11, L11Channel-section steel sole wide L streamlined with I-shaped cross-section7It is relevant,
L11=L7, i.e. L11=4.88mm.I-shaped cross-section streamlined channel-section steel deflection distance r and angle of bend θ and stator facewidth btAnd it is fixed
Sub- tooth h highsIt is relevant, i.e. r=bt/ 6~bt/ 3,Then r=3.2mm~6.5mm, preferably 4mm, θ
=14.7 °~27.8 °, preferably 17 °, wherein deflection distance r is the streamlined channel-section steel maximum deflection point in I-shaped cross-section and adjacent two
Radial distance between individual bending midpoint, angle of bend θ is that the tangent line of midpoint between two neighboring bending is curved with two neighboring
Angle between Qu Zhongdian lines, the design ensure that maximum ventilation radiating effect while coil afterbody eddy-current loss is reduced
Really.
In order to further improve the ventilation effect of stator, adjacent sectional stator core (1) described in the utility model each
Three channel-section steels of long, medium and short are placed between stator tooth (4), the wherein streamlined channel-section steel in I-shaped cross-section is channel-section steel long, square-section stream
Line style channel-section steel is middle channel-section steel, and square-section linear pattern channel-section steel is short channel-section steel, as shown in Figure 9.The wherein streamlined length in I-shaped cross-section
Channel-section steel is made up of six bendings, and the streamlined middle channel-section steel in square-section is made up of five bendings.Each channel-section steel straight length is determined with motor
Sub- iron core outer diameter D and stator tooth h highsIt is relevant, i.e., channel-section steel straight length L longs1=0.13 (D-2hs(the D-2h of)~0.18s), bracket groove
Steel straight length Ls2=0.1 (D-2hs(the D-2h of)~0.15s), short channel-section steel straight length Ls3=0.09 (D-2hs(the D- of)~0.11
2hs), i.e. Ls1=142.6mm~197.5mm, preferably 164mm, Ls2=109.8mm~164.7mm, preferably 128mm, Ls3=
98.7mm~120.7mm, preferably 106mm.Each channel-section steel is installed in air duct on each tooth, and three channel-section steels, groove are laid on each tooth
Steel is integrally extended in a radial direction.Figure 10 is the enlarged drawing of part A in Fig. 9, and three channel-section steels are represented by a, b and c respectively, wherein a
Square-section linear pattern channel-section steel is represented, b represents the streamlined channel-section steel in square-section, and c represents the streamlined channel-section steel in I-shaped cross-section.In groove
Steel proximal ends, channel-section steel distance Edge Distance unshakable in one's determination is ht1, length is 7mm~10mm, preferably 8.5mm, centre position b channel-section steels and a
It is h that channel-section steel ultimate range and minimum range are respectivelyt2And ht3, ht2And ht3The streamlined channel-section steel bending in size and I-shaped cross-section away from
From r, square-section linear pattern channel-section steel width L1And the streamlined channel-section steel width L in square-section6It is relevant, ht2=0.3L1+r-0.2L6
~0.8L1+r-0.4L6, ht3=0.5L1+0.8r-0.7L6~0.7L1-0.6r+0.3L6, i.e. ht2=4.19mm~5.20mm, it is excellent
Select 5.04mm, ht3=1.65mm~1.98mm, preferably 1.71mm.A channel-section steels center and nearside tooth back gauge (b in Fig. 7t1)
With c channel-section steels center and nearside tooth back gauge (b in Fig. 7t4) equal, its distance and stator facewidth btAnd I-shaped cross-section streamline
R is relevant for type groove steel deflection distance, i.e. bt1=bt4=0.15bt+ 0.3r~0.18bt+ 0.4r, i.e. bt1=bt4=4.1mm~
5.07mm, preferably 4.46mm；B channel-section steel centre distance a channel-section steels centre distance (b in Fig. 7t2) (scheme with the centre distance apart from c channel-section steels
B in 7t3) equal, and distance channel-section steel width L streamlined with square-section6, stator facewidth btAnd i shaped cross section streamline type groove
R is relevant for steel deflection distance, bt2=bt3=0.5bt-0.3L6- 0.8r~0.5bt-0.55L6+ 0.2r, i.e. bt2=bt3=
4.91mm~7.63mm, preferably 5.29mm.On the whole, channel-section steel is with three teeth by period profile in whole Radial ventilation duct
A cycle, on three teeth in a cycle, the preferred mounting means of channel-section steel is followed successively by that " 164mm is I-shaped in the direction of the clock
Gross section streamlines type channel-section steel long ", " the streamlined middle channel-section steel in 128mm square-sections ", " 106mm square-sections linear pattern short channel-section steel ",
" the streamlined channel-section steel long in 164mm I-shaped cross-sections ", " the streamlined middle channel-section steel in 128mm square-sections ", " 106mm square-sections straight line
Type short channel-section steel ", " 106mm square-sections linear pattern short channel-section steel ", " the streamlined middle channel-section steel in 128mm square-sections ", " 164mm I-shapeds
The streamlined channel-section steel long of tee section ", channel-section steel is distributed as shown in Figure 9 above.The design has good to cooling gas in ventilating duct
Water conservancy diversion effect, and stator coil afterbody eddy-current loss is obviously reduced, motor radiating rate improves 15% or so.
The above, specific embodiment only of the present utility model, but it is of the present utility model protection be not limited thereto,
Those skilled in the art are not in the case where principle is changed, and it is new that any improvement without substantial variations made also should be regarded as this practicality
The protection domain of type.
The content not being described in detail in the utility model specification belongs to existing known to professional and technical personnel in the field
Technology.
Claims (2)
1. a kind of with the stator ventilation steel channel structure for reducing eddy-current loss, it is characterised in that：Mainly include that sectionalized stator is unshakable in one's determination
(1), Radial ventilation duct (2) and ventilation steel channel (3), wherein sectionalized stator iron core (1) are axially distributed, and its hop count n is by stator iron
The external diameter of the heart (1) determines, is n=D/55~D/50, and D is electric machine stator iron external diameter, between adjacent sectionalized stator iron core (1)
It is Radial ventilation duct (2) that it is formed by circumferential ventilation steel channel (3), the axial width L of Radial ventilation duct (2)dWith electricity
Machine stator iron core outer diameter D and axial length LfeIt is relevant, Ld=(0.1D+0.3Lfe)/55~(0.2D+0.1Lfe)/35, stator iron
The heart (1) includes stator tooth (4) and stator slot (5), and the stator tooth (4) and stator slot (5) of adjacent sectionalized stator iron core (1) are in axle
Correspond upwards, winding, stator of the ventilation steel channel (3) installed in adjacent sectional stator core (1) are placed with stator slot (5)
Between tooth (4), three each unequal ventilation slots of length are placed between each stator tooth of the adjacent sectional stator core (1)
Steel (3), i.e., one square-section linear pattern channel-section steel, a streamlined channel-section steel in square-section and an I-shaped cross-section streamline type groove
Steel, described square-section linear pattern channel-section steel width is L1, L1With stator facewidth btIt is relevant, there is following relation：L1=bt/ 5~
bt/ 3, the cross-sectional width of square-section linear pattern channel-section steel is L2, L2With square-section linear pattern channel-section steel width L1It is relevant, L2=L1,
Section thickness L3With air duct axial width LdIt is relevant, there is following relation：L3=Ld；The streamlined channel-section steel in square-section is whole
The cross-sectional width of body structure is L4, L4With stator facewidth btIt is relevant, there is following relation：L4=bt/ 5~3bt/ 7, section thickness is
L5, equally, L5With air duct axial width LdIt is relevant, there is following relation：L5=Ld, the streamlined channel-section steel width L in square-section6,
L6Channel cross-section width L streamlined with square-section4It is relevant, L6=L4, the streamlined channel-section steel deflection distance r in square-section and bending
Angle, θ and stator facewidth btAnd stator tooth h highsIt is relevant, i.e. r=bt/ 6~bt/ 3,It is wherein curved
Song is the radial distance between the streamlined channel-section steel maximum deflection point in square-section and two neighboring bending midpoint, angle of bend apart from r
Degree θ is the angle between the tangent line and two neighboring bending midpoint line of midpoint between two neighboring bending；It is described I-shaped
Gross section streamlines type groove steel sole L wide7, its size and stator facewidth btIt is relevant, L7=1bt/ 7~3bt/ 8, I-shaped cross-section is streamlined
Channel-section steel sole thickness L10With air duct axial width LdIt is relevant, it is L10=Ld/ 10~Ld/ 7, the streamlined channel-section steel abdomen in I-shaped cross-section
Plate L wide9, its size and the streamlined channel-section steel sole L wide in I-shaped cross-section7It is relevant, it is L9=L7/ 3~L7/ 2, I-shaped cross-section streamline
Type groove steel section thickness is L8, its size and air duct axial width LdIt is relevant, i.e. L8=Ld, I-shaped angle beta with I-shaped section
Surface current line style channel-section steel sole L wide7And the streamlined channel-section steel thickness L in I-shaped cross-section8It is relevant, according to optimization design,Wherein I-shaped angle beta is the angle between channel-section steel I-shaped cross-section horizontal edge and hypotenuse, work
The streamlined channel-section steel width L of shaped sections11, L11Channel-section steel sole wide L streamlined with I-shaped cross-section7It is relevant, L11=L7, I-shaped section
Surface current line style channel-section steel deflection distance r and angle of bend θ and stator facewidth btAnd stator tooth h highsIt is relevant, i.e. r=bt/ 6~bt/ 3,Wherein deflection distance r be the streamlined channel-section steel maximum deflection point in I-shaped cross-section with it is two neighboring
Radial distance between bending midpoint, angle of bend θ is the tangent line of midpoint and two neighboring bending between two neighboring bending
Angle between the line of midpoint.
2. according to claim 1 a kind of with the stator ventilation steel channel structure for reducing eddy-current loss, it is characterised in that：Institute
State placement three channel-section steels of long, medium and short between each stator tooth (4) of adjacent sectional stator core (1), wherein I-shaped cross-section stream
Line style channel-section steel is channel-section steel long, and the streamlined channel-section steel in square-section is middle channel-section steel, and square-section linear pattern channel-section steel is short channel-section steel, wherein work
The streamlined channel-section steel long of shaped sections is made up of six bendings, and the streamlined middle channel-section steel in square-section is made up of five bendings, each channel-section steel
Straight length and electric machine stator iron outer diameter D and stator tooth h highsIt is relevant, be：Channel-section steel straight length L longs1=0.13 (D-2hs)
~0.18 (D-2hs), middle channel-section steel straight length Ls2=0.1 (D-2hs(the D-2h of)~0.15s), short channel-section steel straight length Ls3=
0.09(D-2hs(the D-2h of)~0.11s), in channel-section steel proximal ends, three channel-section steel distance Edge Distances unshakable in one's determination are ht1, length is
7mm~10mm, it is h that channel-section steel is respectively with channel-section steel ultimate range long and minimum range in centre positiont2And ht3, ht2And ht3Size
Channel-section steel deflection distance r streamlined with I-shaped cross-section, square-section linear pattern channel-section steel width L1And the streamlined channel-section steel in square-section
Width L6It is relevant, ht2=0.3L1+r-0.2L6~0.8L1+r-0.4L6, ht3=0.5L1+0.8r-0.7L6~0.7L1-0.6r+
0.3L6, channel-section steel center long and nearside tooth back gauge bt1With short channel-section steel center and nearside tooth back gauge bt4It is equal, its away from
From with stator facewidth btAnd the streamlined channel-section steel deflection distance r in I-shaped cross-section is relevant, is bt1=bt4=0.15bt+ 0.3r~
0.18bt+ 0.4r, middle channel-section steel centre distance channel-section steel centre distance b longt2With the centre distance b apart from short channel-section steelt3It is equal, and should be away from
From with the streamlined channel-section steel width L in square-section6, stator facewidth btAnd the streamlined channel-section steel deflection distance r of i shaped cross section is relevant,
bt2=bt3=0.5bt-0.3L6- 0.8r~0.5bt-0.55L6+ 0.2r, on the whole, channel-section steel is by period profile in whole radially logical
Be a cycle with three teeth in wind ditch, on three teeth in a cycle, the preferred mounting means of channel-section steel in the direction of the clock according to
It is secondary for " the streamlined channel-section steel long in I-shaped cross-section ", " the streamlined middle channel-section steel in square-section ", " square-section linear pattern short channel-section steel ",
" the streamlined channel-section steel long in I-shaped cross-section ", " the streamlined middle channel-section steel in square-section ", " square-section linear pattern short channel-section steel ", " rectangle
Section linear pattern short channel-section steel ", " the streamlined middle channel-section steel in square-section ", " the streamlined channel-section steel long in I-shaped cross-section ".
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| CN201621013354.0U CN206195492U (en) | 2016-08-29 | 2016-08-29 | Stator duct spacer structure with reduce eddy current loss |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106230149A (en) * | 2016-08-29 | 2016-12-14 | 哈尔滨理工大学 | There is the stator aeration structure of I-shaped cross-section and square-section built channel |
| CN113489176A (en) * | 2021-07-16 | 2021-10-08 | 鉴丰电子科技有限公司 | Treadmill direct current brushless motor control system and adopt treadmill of this system |
-
2016
- 2016-08-29 CN CN201621013354.0U patent/CN206195492U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106230149A (en) * | 2016-08-29 | 2016-12-14 | 哈尔滨理工大学 | There is the stator aeration structure of I-shaped cross-section and square-section built channel |
| CN106230149B (en) * | 2016-08-29 | 2019-05-17 | 哈尔滨理工大学 | Stator aeration structure with I-shaped cross-section and rectangular section built channel |
| CN113489176A (en) * | 2021-07-16 | 2021-10-08 | 鉴丰电子科技有限公司 | Treadmill direct current brushless motor control system and adopt treadmill of this system |
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