CN203734394U - Ventilating duct structure of a stator core - Google Patents
Ventilating duct structure of a stator core Download PDFInfo
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- CN203734394U CN203734394U CN201420032709.5U CN201420032709U CN203734394U CN 203734394 U CN203734394 U CN 203734394U CN 201420032709 U CN201420032709 U CN 201420032709U CN 203734394 U CN203734394 U CN 203734394U
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Abstract
A ventilating duct structure of a stator core comprises a plurality of repetitive structural units, wherein each repetitive structural unit is formed by a channel which is defined by an upper ventilating slot piece, a lower ventilating slot piece and two adjacent ventilating duct supporting components; one end of each ventilating duct supporting component is connected with the upper ventilating slot piece, and the other end of each ventilating duct supporting component is connected with the lower ventilating slot piece; the upper ventilating slot piece or the lower ventilating slot piece is provided with at least one protuberance which extends in the radial direction of the stator core; the protuberance is positioned in the channel; the protuberance of the upper ventilating slot piece and a stator core fan-shaped piece adjacent to the upper ventilating slot piece define a ventilating path; the protuberance of the lower ventilating slot piece and a stator core fan-shaped piece adjacent to the lower ventilating slot piece define another ventilating path; and the protuberances divide the channel into a plurality of ventilation and heat exchange spaces. By improving the ventilating duct structure of the stator core, the cooling effect of a stator is remarkably improved, the flow of cooling gas and loss of ventilation are also greatly reduced, and accordingly, the efficiency of a motor is improved.
Description
Technical field
The utility model relates to motor cooling technology field, relates in particular to a kind of stator core ventilation ducts structure of good cooling results.
Background technology
At present, China's energy consumption of electrical machinery accounts for the 60-70% of industrial energy consumption, and from energy savings, protection of the environment, high efficiency electric is international trend now, and China " 12 " plan has also strengthened the R&D intensity to high efficiency motor.One of approach that improves the efficiency of motor is to reduce the loss of motor.
On the other hand, along with the progress of design of electrical motor and manufacturing technology, the capacity of motor improves constantly, and power density constantly increases, and its loss, heating and the problem of ventilating also become more and more serious.In order to ensure reliability service and the useful life of large-size machine, be necessary to improve ventilation effect and reduce the wastage.
The loss of motor generally comprises rotor copper loss, core loss, bearing loss, draft loss and other losses, and wherein draft loss accounts for the 10%-30% of motor total losses.Motor is in running, and stator winding produces copper loss and generates heat, and stator core is because iron loss is generated heat, refrigerating gas is after rotor and air gap, the flow through ventilation ducts of stator core, the heat that stator winding and stator core are produced is taken away, thereby ensures that its temperature rise is in prescribed limit.Stator core forms by being axially interrupted along it the stator core segment and the stator ventilation ducts that distribute; Stator core segment is overrided to form by certain thickness stator core segment, stator ventilation ducts is made up of two vent segments parallel to each other and the multiple ventilation ducts support components between two vent segments, and the passage that every two ventilation ducts support components and upper and lower vent segment surround forms a constitutional repeating unit of ventilation ducts.There is heat exchange in the flow through refrigerating gas of stator core ventilation ducts and the surface of vent segment and ventilation ducts support component.The cooling effect of stator depends primarily on the heat exchange effect of refrigerating gas and vent segment.The heat exchange area of refrigerating gas flow, flow velocity and fluidised form, vent segment etc. is the principal element that affects stator heat radiation.Use the stator vent segment structure of existing routine, limited by area of dissipation and cooling-air fluidised form, the cooling effectiveness of refrigerating gas can not obviously improve, and stator temperature rise can not get effectively reducing.
The heat exchange form of vent segment and refrigerating gas is mainly hot conduction and convection, mainly occurs in the boundary layer of refrigerating gas and vent segment Surface Contact; For laminar flow state, the thickness in boundary layer is generally micron dimension; And turbulent flow fluidised form is with respect to laminar flow state, the thickness in its boundary layer increases with order of magnitude form, if fluidised form is enough disorderly, do not have obvious boundary layer, gas all can produce the turbulent flow of vortex shape in whole wind path, especially, if there is perturbations in wind path, near perturbations, can form very disorderly turbulent flow fluidised form so.Therefore, form turbulent flow compared with laminar flow state, the heat exchange of refrigerating gas and vent segment is just very abundant.
Frictional dissipation between flow passage components when draft loss comprises gas circulation in own loss and gas and wind path.The draft loss of motor mainly comprises draft loss when refrigerating gas is flowed through rotor, stator.Square relation in direct ratio of draft loss and refrigerating gas flow.Use the stator wind slotted vane structure of existing routine, need to improve by increasing refrigerating gas flow velocity and flow the cooling effect of stator, thus, the draft loss can increase cooling-air by rotor and stator ventilation ducts time.
For the stator ventilation ducts of existing routine, because it is made up of two parallel vent segment and ventilation ducts support components, the reynolds number Re when fluidised form of refrigerating gas depends mainly on refrigerating gas and flows in stator ventilation ducts, when Re hour, the fluidised form of refrigerating gas is generally laminar flow, and Reynolds number reaches 10
5 ~3 × 10
6time, the fluidised form of refrigerating gas is for changing turbulent flow into.Reynolds number Re=ρ vL/ μ, ρ is gas density, the viscosity that μ is gas, v is gas flow rate, L is the component feature length that gas flow is crossed; Under the gas property condition consistent with flow passage components, Re is directly proportional to v; Improve wind speed v and can improve Re, thereby change gas flow pattern.Generally speaking,, in order to obtain good cooling effect, refrigerating gas wind speed in the ventilation ducts of existing motor is high, Reynolds number is high, can form turbulent flow; But, as previously mentioned, improve cooling effect by raising refrigerating gas wind speed like this and can make the draft loss of complete machine significantly increase, be unfavorable for improving unit efficiency.If can produce to wind path the structure of disturbance and have in wind path, even if gas flow rate is very low, also can near perturbations, form turbulent flow, even form karman vortex rank, can in the situation that gas flow rate is very low, obtain good heat transfer effect, thereby when ensureing stator cooling effect, reduce draft loss, improve the efficiency of unit.
Publication number is CN 202889110U, and open day is the high-voltage generator that the Chinese patent literature of on 04 17th, 2013 discloses a kind of high efficiency low wind resistance, it is characterized in that: stator core is provided with the radial ventilation ditch that radiation is dispersed; In the winding of the end, inlet side of stator core, be provided with end filling; In the end, air side of stator core, winding arranged outside has annular deep bead and air baffle ring, and air baffle ring is fixed on the inwall of support by deep bead, settles centrifugal fan at air outlet window place.
The high-voltage generator of the disclosed high efficiency low wind resistance of this patent documentation, in its stator core, be provided with radiation divergence expression radial ventilation ditch, the wind path that ventilation ducts forms is parallel ventilation branch, make the heat exchange of refrigerating gas and vent segment abundant, need to improve refrigerating gas unit discharge, can cause cooling air quantity to improve, finally make the draft loss of rotor and stator significantly increase, electric efficiency reduces.
Publication number is CN 102497040A, the Chinese patent literature that open day is on 06 13rd, 2012 discloses a kind of vent segment, it is characterized in that: it comprises vent segment body, on vent segment body, along wind ditch wind direction, fin is set, described fin and vent segment body form angle.
The disclosed vent segment of this profit document, although can change to a certain extent gas flow pattern in stator ventilation ducts by increasing fin, but it is also not strong to the perturbation action of refrigerating gas, and the area of dissipation increase of vent segment is remarkable not, therefore, the heat exchange of refrigerating gas and vent segment is also insufficient, not so good to the cooling effect of stator.
Utility model content
The utility model is in order to overcome the defect of above-mentioned prior art, a kind of stator core ventilation ducts structure is provided, the utility model is by improving stator core ventilation ducts structure, not only significantly increase the heat transfer space of ventilation ducts, significantly improve the cooling effect of stator, also significantly reduce refrigerating gas flow, draft loss, thereby improved the efficiency of motor.
The utility model is achieved through the following technical solutions:
A kind of stator core ventilation ducts structure, comprise multiple constitutional repeating units, described constitutional repeating unit is by upper vent segment, the passage that lower vent segment ventilation ducts support component adjacent with two surrounds forms, one end of ventilation ducts support component is connected with upper vent segment, the other end is connected with lower vent segment, it is characterized in that: on described upper vent segment or lower vent segment, have a projection of radially extending along stator core at least, described projection is positioned at passage, between the projection of upper vent segment and the stator core segment adjacent with upper vent segment, form air duct, between the projection of lower vent segment and the stator core segment adjacent with lower vent segment, form air duct, passage is divided into multiple ventilation heat exchanges space by described projection.
The cross section of described air duct is trapezoidal or other random geometries.
Described projection is to be formed after bending by upper vent segment or lower vent segment, and the back side of projection form described air duct.
On described upper vent segment and lower vent segment, all there is the projection of radially extending along stator core.
The height of described upper vent segment projection is at least at least high 0.5 millimeter than lower vent segment surface than the height of upper vent segment surface high 0.5 millimeter or lower vent segment projection.
Described projection is extended along stator core radial direction, is upwards being distributed as row, two row or multiple rows stator core week.
Described projection is extended continuously along stator core radial direction, upwards forms continuous ventilating road in stator core footpath.
Described projection is interrupted and is extended along stator core radial direction, upwards forms intermittent air blast road in stator core footpath.
The upper and lower true bearing that do not represent in upper vent segment described in the utility model and lower vent segment, only represents the relative position in accompanying drawing.
The beneficial effects of the utility model are mainly manifested in the following aspects:
One, on upper vent segment or lower vent segment, has a projection of radially extending along stator core at least, described projection is positioned at passage, passage is divided into multiple ventilation heat exchanges space by projection, projection can form strong disturbance to gas flow pattern in stator ventilation ducts, make refrigerating gas under lower flow velocity, just form turbulent flow, increase boundary layer thickness, can increase the heat transfer space on refrigerating gas and upper vent segment surface and lower vent segment surface, even form very disorderly turbulent flow, make boundary layer expand to whole ventilation air duct, thereby make heat transfer space expand to whole ventilation ducts, increase the heat transfer space of ventilation ducts, significantly improve the cooling effect of stator, projection and and upper vent segment or the adjacent stator core segment of lower vent segment between the air duct that forms can pass through for refrigerating gas, make the area of dissipation increase of whole stator core, in addition, passage is divided into multiple ventilation heat exchanges space by projection, is that structure is more conducive to form turbulent flow described in the patent documentation of CN 102497040A than publication number, makes heat exchange more abundant, therefore, above-mentioned technical characterictic forms a complete technical scheme, can significantly improve the cooling effect of stator.
Two, the cross section of air duct is trapezoidal or other random geometries, preferably trapezoidal, and the in the situation that in ensureing stator ventilation ducts, gas flow pattern forming strong disturbance, manufacturing process is simpler, and production cost is lower.
Three, projection is to be formed after bending by upper vent segment or lower vent segment, and overall construction intensity is high, can effectively ensure whole ventilation ducts cooling effect.
Four, on upper vent segment and lower vent segment, all there is the projection of radially extending along stator core, further gas flow pattern in stator ventilation ducts is formed to strong disturbance, and passage is divided into multiple ventilation heat exchanges space, more be conducive to refrigerating gas and under lower flow velocity, just form turbulent flow, greatly strengthen the radiating effect of whole stator core, thereby significantly reduce refrigerating gas flow and draft loss, improve the efficiency of whole motor.
Five, the height of upper vent segment projection is at least at least high 0.5 millimeter than lower vent segment surface than the height of upper vent segment surface high 0.5 millimeter or lower vent segment projection, can ensure that air duct passes through smoothly for refrigerating gas, thereby significantly improve the heat transfer effect of whole stator core.
Six, the projection on upper vent segment or lower vent segment can be row, two row or multiple rows along the circumferential distribution of stator core, can select flexibly according to the requirement of stator cooling effect; Under the prerequisite of conditions permit, multiple row projection is set and can not only increases perturbations, and passage can be divided into multiple ventilation heat exchanges space, more be conducive to refrigerating gas and under lower flow velocity, form very disorderly turbulent flow, thereby in improving the cooling effect of whole stator, reduce draft loss, improve the efficiency of motor.
Seven, projection is radially continuously or is interrupted along stator core, can select flexibly according to the requirement of stator core cooling effect; The projection of being interrupted is better to the perturbation action of refrigerating gas, is more conducive to improve the heat transfer effect of whole stator core, thereby is conducive to improve the efficiency of motor.
Brief description of the drawings
More feature and advantage of the present utility model will become obviously by the description of preferred but non-proprietary implementation example (via the non-limiting example explanation in accompanying drawing), wherein:
Fig. 1 is the B-B cross section structure schematic diagram of the utility model (having the continuous trapezoid cross section air duct of row on lower vent segment);
Fig. 2 is the A-A cross section structure schematic diagram of Fig. 1;
Fig. 3 is the A-A cross section wind path schematic diagram of Fig. 1;
Fig. 4 is the ventilation ducts B-B cross section structure schematic diagram of prior art;
Fig. 5 is the A-A cross section structure schematic diagram of Fig. 4;
Fig. 6 is the A-A cross section wind path schematic diagram in Fig. 4;
Fig. 7 is the B-B cross section structure schematic diagram of the utility model embodiment (the trapezoid cross section air duct that has row to be interrupted on lower vent segment);
Fig. 8 is the A-A cross section structure schematic diagram of Fig. 7;
Fig. 9 is the A-A cross section wind path schematic diagram of Fig. 7;
Figure 10 is the B-B cross section structure schematic diagram of the utility model embodiment (having other continuous cross sectional shape air ducts of row on lower vent segment);
Figure 11 is the A-A cross section structure schematic diagram of Figure 10;
Figure 12 is the B-B cross section structure schematic diagram of the utility model embodiment (other cross sectional shape air ducts that have row to be interrupted on lower vent segment);
Figure 13 is the A-A cross section structure schematic diagram of Figure 12;
Figure 14 is the B-B cross section structure schematic diagram of the utility model embodiment (having the continuous trapezoid cross section air duct of row on upper vent segment);
Figure 15 is the B-B cross section structure schematic diagram of the utility model embodiment (the trapezoid cross section air duct that has row to be interrupted on upper vent segment);
Figure 16 is the B-B cross section structure schematic diagram of the utility model embodiment (all having the continuous trapezoid cross section air duct of row on upper vent segment and lower vent segment);
Figure 17 is the B-B cross section structure schematic diagram of the utility model embodiment (the trapezoid cross section air duct that all has row to be interrupted on upper vent segment and lower vent segment);
Figure 18 is the B-B cross section structure schematic diagram of the utility model embodiment (having the continuous trapezoid cross section air duct of two row on lower vent segment);
Figure 19 is the B-B cross section structure schematic diagram of the utility model embodiment (the trapezoid cross section air duct that has two row to be interrupted on lower vent segment);
Figure 20 is the B-B cross section structure schematic diagram of the utility model embodiment (having the continuous trapezoid cross section air duct of two row on upper vent segment);
Figure 21 is the B-B cross section structure schematic diagram of the utility model embodiment (the trapezoid cross section air duct that has two row to be interrupted on upper vent segment);
Figure 22 is the B-B cross section structure schematic diagram of the utility model embodiment (all having the continuous trapezoid cross section air duct of two row on upper vent segment and lower vent segment);
Figure 23 is the B-B cross section structure schematic diagram of the utility model embodiment (the trapezoid cross section air duct that all has two row to be interrupted on upper vent segment and lower vent segment);
Figure 24 is the B-B cross section structure schematic diagram of the utility model embodiment (having other continuous cross sectional shape air ducts of row on upper vent segment);
Figure 25 is the B-B cross section structure schematic diagram of the utility model embodiment (other cross sectional shape air ducts that have row to be interrupted on upper vent segment);
Figure 26 is the B-B cross section structure schematic diagram of the utility model embodiment (all having other continuous cross sectional shape air ducts of row on upper vent segment and lower vent segment);
Figure 27 is the B-B cross section structure schematic diagram of the utility model embodiment (other cross sectional shape air ducts that all have row to be interrupted on upper vent segment and lower vent segment);
Figure 28 is the B-B cross section structure schematic diagram of the utility model embodiment (having other continuous cross sectional shape air ducts of two row on lower vent segment);
Figure 29 is the B-B cross section structure schematic diagram of the utility model embodiment (other cross sectional shape air ducts that have two row to be interrupted on lower vent segment);
Figure 30 is the B-B cross section structure schematic diagram of the utility model embodiment (having other continuous cross sectional shape air ducts of two row on upper vent segment);
Figure 31 is the B-B cross section structure schematic diagram of the utility model embodiment (other cross sectional shape air ducts that have two row to be interrupted on upper vent segment);
Figure 32 is the B-B cross section structure schematic diagram of the utility model embodiment (all having other continuous cross sectional shape air ducts of two row on upper vent segment and lower vent segment);
Figure 33 is the B-B cross section structure schematic diagram of the utility model embodiment (other cross sectional shape air ducts that all have two row to be interrupted on upper vent segment and lower vent segment);
Mark in figure: 1, ventilation ducts support component, 2, upper vent segment, 3, lower vent segment, 4, projection, 5, stator core segment, 6, air duct.
Embodiment
Embodiment 1
A kind of stator core ventilation ducts structure, comprise multiple constitutional repeating units, described constitutional repeating unit is by upper vent segment 2, the passage that lower vent segment 3 ventilation ducts support component 1 adjacent with two surrounds forms, one end of ventilation ducts support component 1 is connected with upper vent segment 2, the other end is connected with lower vent segment 3, on described upper vent segment 2 or lower vent segment 3, has a projection of radially extending along stator core 4 at least, described protruding 4 are positioned at passage, between the projection 4 of upper vent segment 2 and the stator core segment 5 adjacent with upper vent segment 2, form air duct 6, between the projection 4 of lower vent segment 3 and the stator core segment 5 adjacent with lower vent segment 3, form air duct 6, passage is divided into multiple ventilation heat exchanges space by described protruding 4.
The present embodiment is the most basic execution mode, simple in structure, adopt such structure, projection 4 can form strong disturbance to gas flow pattern in stator ventilation ducts, make refrigerating gas under lower flow velocity, just form turbulent flow, increase boundary layer thickness, can increase the heat transfer space on refrigerating gas and upper vent segment 2 surfaces and lower vent segment 3 surfaces, even form very disorderly turbulent flow, make boundary layer expand to whole ventilation air duct, thereby make heat transfer space expand to whole ventilation ducts, improve the heat exchange area of ventilation ducts, significantly improve the cooling effect of stator; Described protruding 4 and and upper vent segment 2 or the adjacent stator core segment 5 of lower vent segment 3 between be formed with air duct 6, air duct 6 can pass through for refrigerating gas, and the area of dissipation of whole stator core is increased; In addition, passage is divided into multiple ventilation heat exchanges space by projection 4, is more conducive to form turbulent flow, makes heat exchange more abundant.
Embodiment 2
A kind of stator core ventilation ducts structure, comprise multiple constitutional repeating units, described constitutional repeating unit is by upper vent segment 2, the passage that lower vent segment 3 ventilation ducts support component 1 adjacent with two surrounds forms, one end of ventilation ducts support component 1 is connected with upper vent segment 2, the other end is connected with lower vent segment 3, on described upper vent segment 2 or lower vent segment 3, has a projection of radially extending along stator core 4 at least, described protruding 4 are positioned at passage, between the projection 4 of upper vent segment 2 and the stator core segment 5 adjacent with upper vent segment 2, form air duct 6, between the projection 4 of lower vent segment 3 and the stator core segment 5 adjacent with lower vent segment 3, form air duct 6, passage is divided into multiple ventilation heat exchanges space by described protruding 4.The cross section of described air duct 6 is trapezoidal or other random geometries.
The present embodiment is a preferred embodiments, and the cross section of air duct 6 is trapezoidal or other random geometries, preferably trapezoidal, and the in the situation that in ensureing stator ventilation ducts, gas flow pattern forming strong disturbance, manufacturing process is simpler, and production cost is lower.
Embodiment 3
A kind of stator core ventilation ducts structure, comprise multiple constitutional repeating units, described constitutional repeating unit is by upper vent segment 2, the passage that lower vent segment 3 ventilation ducts support component 1 adjacent with two surrounds forms, one end of ventilation ducts support component 1 is connected with upper vent segment 2, the other end is connected with lower vent segment 3, on described upper vent segment 2 or lower vent segment 3, has a projection of radially extending along stator core 4 at least, described protruding 4 are positioned at passage, between the projection 4 of upper vent segment 2 and the stator core segment 5 adjacent with upper vent segment 2, form air duct 6, between the projection 4 of lower vent segment 3 and the stator core segment 5 adjacent with lower vent segment 3, form air duct 6, passage is divided into multiple ventilation heat exchanges space by described protruding 4.The cross section of described air duct 6 is trapezoidal or other random geometries.
Described protruding 4 is to be formed after bending by upper vent segment 2 or lower vent segment 3, and the back side of projection 4 form described air duct 6.
The present embodiment is another preferred embodiments, and projection 4 is to be formed after bending by upper vent segment 2 or lower vent segment 3, and overall construction intensity is high, can effectively ensure whole ventilation ducts cooling effect.
Embodiment 4
A kind of stator core ventilation ducts structure, comprise multiple constitutional repeating units, described constitutional repeating unit is by upper vent segment 2, the passage that lower vent segment 3 ventilation ducts support component 1 adjacent with two surrounds forms, one end of ventilation ducts support component 1 is connected with upper vent segment 2, the other end is connected with lower vent segment 3, on described upper vent segment 2 or lower vent segment 3, has a projection of radially extending along stator core 4 at least, described protruding 4 are positioned at passage, between the projection 4 of upper vent segment 2 and the stator core segment 5 adjacent with upper vent segment 2, form air duct 6, between the projection 4 of lower vent segment 3 and the stator core segment 5 adjacent with lower vent segment 3, form air duct 6, passage is divided into multiple ventilation heat exchanges space by described protruding 4.The cross section of described air duct 6 is trapezoidal or other random geometries.
Described protruding 4 is to be formed after bending by upper vent segment 2 or lower vent segment 3, and the back side of projection 4 form described air duct 6.
On described upper vent segment 2 and lower vent segment 3, all there is the projection 4 of radially extending along stator core.
The present embodiment is another preferred embodiments, on upper vent segment 2 and lower vent segment 3, all there is the projection 4 of radially extending along stator core, further gas flow pattern in stator ventilation ducts is formed to strong disturbance, and passage is divided into multiple ventilation heat exchanges space, more be conducive to refrigerating gas and under lower flow velocity, just form turbulent flow, greatly strengthen the radiating effect of whole stator core, thereby significantly reduce refrigerating gas flow and draft loss, improve the efficiency of whole motor.
Embodiment 5
A kind of stator core ventilation ducts structure, comprise multiple constitutional repeating units, described constitutional repeating unit is by upper vent segment 2, the passage that lower vent segment 3 ventilation ducts support component 1 adjacent with two surrounds forms, one end of ventilation ducts support component 1 is connected with upper vent segment 2, the other end is connected with lower vent segment 3, on described upper vent segment 2 or lower vent segment 3, has a projection of radially extending along stator core 4 at least, described protruding 4 are positioned at passage, between the projection 4 of upper vent segment 2 and the stator core segment 5 adjacent with upper vent segment 2, form air duct 6, between the projection 4 of lower vent segment 3 and the stator core segment 5 adjacent with lower vent segment 3, form air duct 6, passage is divided into multiple ventilation heat exchanges space by described protruding 4.The cross section of described air duct 6 is trapezoidal or other random geometries.
Described protruding 4 is to be formed after bending by upper vent segment 2 or lower vent segment 3, and the back side of projection 4 form described air duct 6.
On described upper vent segment 2 and lower vent segment 3, all there is the projection 4 of radially extending along stator core.
The height of described upper vent segment 2 projections 4 is at least at least high 0.5 millimeter than lower vent segment 3 surfaces than the height of upper vent segment 2 surfaces high 0.5 millimeter or lower vent segment 3 projections 4.
The present embodiment is another preferred embodiments, the height of upper vent segment 2 projections 4 is at least at least high 0.5 millimeter than lower vent segment 3 surfaces than the height of upper vent segment 2 surfaces high 0.5 millimeter or lower vent segment 3 projections 4, can ensure that air duct 6 passes through smoothly for refrigerating gas, thereby significantly improve the heat transfer effect of whole stator core.
Embodiment 6
A kind of stator core ventilation ducts structure, comprise multiple constitutional repeating units, described constitutional repeating unit is by upper vent segment 2, the passage that lower vent segment 3 ventilation ducts support component 1 adjacent with two surrounds forms, one end of ventilation ducts support component 1 is connected with upper vent segment 2, the other end is connected with lower vent segment 3, on described upper vent segment 2 or lower vent segment 3, has a projection of radially extending along stator core 4 at least, described protruding 4 are positioned at passage, between the projection 4 of upper vent segment 2 and the stator core segment 5 adjacent with upper vent segment 2, form air duct 6, between the projection 4 of lower vent segment 3 and the stator core segment 5 adjacent with lower vent segment 3, form air duct 6, passage is divided into multiple ventilation heat exchanges space by described protruding 4.The cross section of described air duct 6 is trapezoidal or other random geometries.
Described protruding 4 is to be formed after bending by upper vent segment 2 or lower vent segment 3, and the back side of projection 4 form described air duct 6.
On described upper vent segment 2 and lower vent segment 3, all there is the projection 4 of radially extending along stator core.
The height of described upper vent segment 2 projections 4 is at least at least high 0.5 millimeter than lower vent segment 3 surfaces than the height of upper vent segment 2 surfaces high 0.5 millimeter or lower vent segment 3 projections 4.
Described protruding 4 extend along stator core radial direction, are upwards being distributed as row, two row or multiple rows stator core week.Described protruding 4 extend continuously along stator core radial direction, upwards form continuous ventilating road 6 in stator core footpath.
The present embodiment is another preferred embodiments, and projection 4 is extended along stator core radial direction, being upwards distributed as row, two row or multiple rows stator core week, can select flexibly according to the requirement of stator cooling effect; Under the prerequisite of conditions permit, multiple row projection 4 is set and can not only increases perturbations, and passage can be divided into multiple ventilation heat exchanges space, more be conducive to refrigerating gas and under lower flow velocity, form very disorderly turbulent flow, thereby in improving the cooling effect of whole stator, reduce draft loss, improve the efficiency of motor.
Embodiment 7
A kind of stator core ventilation ducts structure, comprise multiple constitutional repeating units, described constitutional repeating unit is by upper vent segment 2, the passage that lower vent segment 3 ventilation ducts support component 1 adjacent with two surrounds forms, one end of ventilation ducts support component 1 is connected with upper vent segment 2, the other end is connected with lower vent segment 3, on described upper vent segment 2 or lower vent segment 3, has a projection of radially extending along stator core 4 at least, described protruding 4 are positioned at passage, between the projection 4 of upper vent segment 2 and the stator core segment 5 adjacent with upper vent segment 2, form air duct 6, between the projection 4 of lower vent segment 3 and the stator core segment 5 adjacent with lower vent segment 3, form air duct 6, passage is divided into multiple ventilation heat exchanges space by described protruding 4.The cross section of described air duct 6 is trapezoidal or other random geometries.
Described protruding 4 is to be formed after bending by upper vent segment 2 or lower vent segment 3, and the back side of projection 4 form described air duct 6.
On described upper vent segment 2 and lower vent segment 3, all there is the projection 4 of radially extending along stator core.
The height of described upper vent segment 2 projections 4 is at least at least high 0.5 millimeter than lower vent segment 3 surfaces than the height of upper vent segment 2 surfaces high 0.5 millimeter or lower vent segment 3 projections 4.
Described protruding 4 extend along stator core radial direction, are upwards being distributed as row, two row or multiple rows stator core week.Described protruding 4 are interrupted and extend along stator core radial direction, upwards form intermittent air blast road 6 in stator core footpath.
The present embodiment is preferred forms, and the perturbation action of 4 pairs of refrigerating gases of projection of interruption is better, is more conducive to improve the heat transfer effect of whole stator core, thereby is conducive to improve the efficiency of motor.
The utility model is not limited to above-described embodiment, and according to the description of above-described embodiment, those of ordinary skill in the art also can make some apparent changes to the utility model, but within these changes all should fall into the protection range of the utility model claim.
Claims (6)
1. a stator core ventilation ducts structure, it is characterized in that: in its constitutional repeating unit, on upper vent segment (2) or lower vent segment (3), has a projection of radially extending along stator core (4) at least, described projection (4) is positioned at vent segment (2), in the passage that lower vent segment (3) ventilation ducts support component adjacent with two (1) surrounds, between the projection (4) of upper vent segment (2) and the stator core segment (5) adjacent with upper vent segment (2), form air duct (6), between the projection (4) of lower vent segment (3) and the stator core segment (5) adjacent with lower vent segment (3), form air duct (6).
2. a kind of stator core ventilation ducts structure according to claim 1, is characterized in that: the cross section of described air duct (6) is trapezoidal or other random geometries.
3. a kind of stator core ventilation ducts structure according to claim 1 and 2, is characterized in that: described projection (4) is to be formed after bending by upper vent segment (2) or lower vent segment (3), and the back side of projection (4) forms described air duct (6).
4. a kind of stator core ventilation ducts structure according to claim 1, is characterized in that: on described upper vent segment (2) and lower vent segment (3), all have the projection (4) of radially extending along stator core.
5. a kind of stator core ventilation ducts structure according to claim 4, is characterized in that: the height of described upper vent segment (2) projection (4) is at least at least high 0.5 millimeter than lower vent segment (3) surface than the height of upper vent segment (2) surface high 0.5 millimeter or lower vent segment (3) projection (4).
6. a kind of stator core ventilation ducts structure according to claim 3, is characterized in that: described projection (4) is extended along stator core radial direction, is upwards being distributed as row, two row or multiple rows stator core week.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420032709.5U CN203734394U (en) | 2014-01-20 | 2014-01-20 | Ventilating duct structure of a stator core |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420032709.5U CN203734394U (en) | 2014-01-20 | 2014-01-20 | Ventilating duct structure of a stator core |
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| CN203734394U true CN203734394U (en) | 2014-07-23 |
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| CN201420032709.5U Withdrawn - After Issue CN203734394U (en) | 2014-01-20 | 2014-01-20 | Ventilating duct structure of a stator core |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746481A (en) * | 2014-01-20 | 2014-04-23 | 东方电气集团东方电机有限公司 | Ventilating duct structure of stator core |
| WO2021027136A1 (en) * | 2019-08-13 | 2021-02-18 | 江苏中车电机有限公司 | Non-welding ventilation channel plate for electric motor |
| US11356000B2 (en) | 2019-03-13 | 2022-06-07 | Ford Global Technologies, Llc | Electric machine cooling with rotor having cooling pipe |
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2014
- 2014-01-20 CN CN201420032709.5U patent/CN203734394U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746481A (en) * | 2014-01-20 | 2014-04-23 | 东方电气集团东方电机有限公司 | Ventilating duct structure of stator core |
| CN103746481B (en) * | 2014-01-20 | 2015-09-23 | 国网新源控股有限公司 | A kind of stator core ventilation ducts structure |
| US11356000B2 (en) | 2019-03-13 | 2022-06-07 | Ford Global Technologies, Llc | Electric machine cooling with rotor having cooling pipe |
| WO2021027136A1 (en) * | 2019-08-13 | 2021-02-18 | 江苏中车电机有限公司 | Non-welding ventilation channel plate for electric motor |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20140723 Effective date of abandoning: 20150923 |
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| RGAV | Abandon patent right to avoid regrant |