CN1227798C - Insulated winding fastener, rotating electric motor having such fastening means, and method for fastening such winding - Google Patents
Insulated winding fastener, rotating electric motor having such fastening means, and method for fastening such winding Download PDFInfo
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- CN1227798C CN1227798C CN 99122208 CN99122208A CN1227798C CN 1227798 C CN1227798 C CN 1227798C CN 99122208 CN99122208 CN 99122208 CN 99122208 A CN99122208 A CN 99122208A CN 1227798 C CN1227798 C CN 1227798C
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Abstract
The invention discloses an insulating coil fastener, rotating electric motor having such fastening, and method for fastening such coil, by installing an insulating coil prepared in advance into slot of an iron core, gaps caused between a side surface of the insulating coil and surface of a slot is filled with a laminate sheet consisting of film or a layer of woven fabric and a layer of rubber-like elastic material to transmit efficiently Joule heat generated in conductor of the insulating coil to an iron core. Thereby, temperature rise is suppressed and degradation of the insulating coil is reduced.
Description
The present invention relates to the insulated coil in the electric rotating machine fixture, have the electric rotating machine of this fixture and the fixing means of insulated coil.
Electric rotating machine such as motor and generator is encased in the insulated coil that is made of insulant and conductor in the notch (ス ロ Star ト) unshakable in one's determination and makes.In operation process, act on the electromagnetic force of radial direction and act on longitudinally various power such as hot contractility, act on this insulated coil.Therefore, usually in order to be able to take above-mentioned various power and to keep the function of insulated coil, for motor and small-capacity generator, in insulated coil being installed to notch unshakable in one's determination after, carry out resin impregnation and cured.
Yet, for the very big generator of size, carry out resin impregnation after being difficult in the coil of packing into, so, in advance insulated coil is carried out resin impregnation and curing, and then attach it in the notch unshakable in one's determination.
Fig. 1 is the part section oblique view of the stator example of this existing electric rotating machine of expression.Carried out in advance resin impregnation and cured, by the insulated coil 28 that insulant 26 and conductor 27 constitute, be installed to by many block plates 1 and be superimposed together and in the notch 3 of the iron core 2 that constitutes.Liner 29 that insulated coil 28 is made of the FRP on the top and bottom that are positioned at Fig. 1 and the chock 30 that on the above-below direction of Fig. 1 these liners 29 is applied compression stress are fixed.Moreover because the forming dimension of insulated coil 28 has error, and the size of unshakable in one's determination 2 notch 3 is also different, so general, notch 3 is to be shaped according to the size that leaves surplus.Therefore, between the inner face of the side of insulated coil 28 and notch 3, produce the gap.So, at existing embodiment shown in Figure 1, in the remaining gap 22 of the side of insulated coil 28 side, insert FRP (fibre reinforced plastics) sheet 20 that adapts with its size, come insulated coil 28 is fixed with this.
Moreover, a kind of like this example is also arranged, promptly as shown in Figure 2, the FRP plate 21 that insertion has the corrugated section in gap 22 utilizes the recovery of shape power of this FRP plate 21 and frictional force thereof to come insulated coil 28 is fixed to replace above-mentioned FRP sheet.
In addition, also also have such two examples: one is as shown in Figure 3, on the side of insulated coil 28, form in advance a kind of by filling the elastomer layer 31 and the fixture 33 that constitutes of the elastomer layer 32 of filling inorganic matter not of inorganic matter, insulated coil 28 and this fixture 33 are inserted in the notch 3 together, the resilience force of the fixture 33 that utilization is made of these two kinds of elastomer layers 31,32 and with unshakable in one's determination 2 friction, come insulated coil 28 is fixed (No. the 932013rd, Canadian Patent); Another is the flat 8-243780 proposed scheme of Japanese Patent Application, and the shape of inorganic matter is made the short fiber shape, has improved from the heat conductivility of insulated coil 28 to iron core 2.
In addition, also also has such example (No. the 4008409th, United States Patent (USP)); As shown in Figure 4, forming single face on the side of insulated coil 28 is undulatory elastomeric sheets 34, and the spring rate of apparent shape is reduced, and insert action is carried out easily.
The gap 22 that is produced between insulated coil 28 and notch 3 has higher thermal resistance, makes the Joule heat that is produced in the conductor 27 in the operation process be difficult to cause insulated coil 28 temperature to rise to 2 one sides transmission unshakable in one's determination.Its result has promoted to constitute the deterioration of the organic electric and mechanical property of insulant 26, so, as mentioned above, utilize various fixtures to reduce the thermal resistance in gap 22, help to improve the performance of electric rotating machine.
Yet, device shown in Figure 1, the rigidity of FRP sheet 20 is strong, utilize this FRP sheet 20 not to be adjacent to formed concavo-convex matching on notch 3 inner faces of the iron core 2 that constitutes by superimposed sheet metal 1, therefore, filling FRP sheet 20, also still have small space, hinder heat to 2 conduction unshakable in one's determination, moreover, because the FRP sheet of preparing 20, it is impossible having different-thickness continuously, so, when the FRP sheet 20 that utilizes the specific thickness of having prepared can not be adjusted, the situation of not inserting this FRP sheet 20 is arranged also.So gap 22 hinders heat conduction in wide range in the case, simultaneously the bed knife of insulated coil 28 is reduced.
Under the situation of using device shown in Figure 2, to the change in size in gap 22, also can fully adapt to, but its corrugated section causes residual clearance between insulated coil 28 and the notch 3, be bad from heat-conductive characteristic.
Device shown in Figure 3 has mixed the elastomer layer 31 of inorganic matter by employing and has not mixed the elastomer layer 32 of inorganic matter, formed with notch 3 in the structure that do not interspace of concavo-convex tight connecting, but, because elastomer layer 32 only employing is compared the relatively poor organic substance material of heat conductivility with inorganic matter with metal, so this elastomer layer 32 hinders heat conduction.And, if the fixture 33 that is made of elastomer layer 31,32 is pasted on the insulated coil 28, be inserted in the notch 3 of iron core 2, when then insulated coil 28 is subjected to various vibration in operation process, above-mentioned fixing piece 33 produces be full of cracks under the effect at the edge of sheet metal 1, peel off from the surface of insulated coil 28 to split away off.So by running over a long time, the result may produce the space in very wide scope.In filling also be the same under the situation of short fiber etc., above-mentioned fixing piece 33 may produce be full of cracks, produces the space.
Under the situation of device shown in Figure 4, owing to insert for behind the undulatory elastomer layer 34 on formation surface on the insulated coil 28, so, between insulated coil 28 and unshakable in one's determination 2, produce the space, hinder heat conduction.
Summary of the invention
The present invention is In view of the foregoing, its purpose is: one side keeps the bed knife of insulated coil, one side improves heat conductivity, suppress the temperature rise of insulated coil, prevent that the insulated coil performance from reducing, with this provide the insulated coil in a kind of electric rotating machine that can keep high reliability for a long time fixture, have the electric rotating machine of this fixture and the fixing means of insulated coil.
In order to achieve the above object, the present invention is by the following technical solutions:
A kind of insulated coil fixture, it is in the iron core notch that the insulated coil of making in advance is inserted into electric rotating machine fixedly the time, be arranged between the inner face of the side of insulated coil and notch, it is characterized in that: be made of lamination layer, this lamination layer has: at least one Zhang Zengqiang lamella; And superimposed rubber-like elastic body layer on a face of above-mentioned enhancing lamella at least; Above-mentioned enhancing lamella is to select inorganic material, organic material for use or by this two kinds of fabrics that material constituted or adhesive-bonded fabric or plastic tab.
Described insulated coil fixture is characterized in that: in above-mentioned rubber-like elastic body layer filling at least a in high-termal conductivity inorganic filling material and the metal-powder.
Described insulated coil fixture is characterized in that: form the rubber-like elastic body layer at outermost layer, and, on this rubber-like elastic body laminar surface, form grooving or pit.
Described insulated coil fixture is characterized in that: the specific insulation of stack direction is 10
0～10
5Ω cm.
A kind of electric rotating machine, it is the insulated coil of making in advance is inserted in the notch unshakable in one's determination and constitutes, and it is characterized in that: arranged any above-mentioned fixture between the side of insulated coil and notch inner face.
Described electric rotating machine is characterized in that: between above-mentioned fixing piece and notch inner face, formed high-termal conductivity grease layer, oil mixture layer or inorganic lubricant layer.
A kind of insulated coil fixing means, it is characterized in that: when the insulated coil of making in advance being inserted in the notch of iron core of electric rotating machine fixedly, it is the fixture that utilizes above-mentioned each, after the relative side covering of notch wall above-mentioned insulated coil and above-mentioned iron core, insert.
A kind of insulated coil fixing means is characterized in that: in the fixing means of described insulated coil, be that the mode of rubber-like elastic body layer covers with the opposite face relative with the notch inner face.
A kind of insulated coil fixing means, it is characterized in that: in the fixing means of as described insulated coil, at fixture as insulated coil, when the outermost rubber-like elastic body layer of use formation is provided with the structure of grooving, with respect to the direction of insertion of insulated coil, this grooving has certain angle ground and covers.
In order to achieve the above object, in for the notch of iron core that the insulated coil of making in advance is inserted and secured on electric rotating machine in the employed immobilization material, the fixture of insulated coil of the present invention, it is characterized in that it being a kind of like this lamination layer, promptly have the enhancing lamella more than 1 layer and at least one face of each enhancing lamella, have superimposed rubber-like elastic body layer.
Because the fixture of this insulated coil is made of enhancing lamella more than 1 layer and rubber-like elastic body layer, so, with only by elastomeric elastomer layer or filling the fixture that constitutes of the elastomer layer of inorganic particle compare, tearing strength improves.So fixture produces tearing because of touching with the steel-sheet side edge that constitutes iron core, the result peels off the phenomenon that splits away off from insulated coil and reduces.
Moreover this fixture constitutes by strengthening lamella and rubber-like elastic body layer, so, can be adjacent to concavo-convex the matching of notch inner face, be difficult for producing the gap, can fix insulated coil securely, heat transfer efficiency is good simultaneously.And this fixture is owing to peel off the phenomenon that splits away off seldom from insulated coil, so, can suppress the temperature rise of insulated coil steadily in the long term.Therefore, utilize this fixture can produce the high electric rotating machine of reliability.
At this, this fixture of insulated coil, its above-mentioned enhancing lamella is selected from following material: plastic film, inorganic material, organic material or the fabric or the adhesive-bonded fabric that constitute by these two kinds of materials, and carried out inorganic material that calendering (カ レ Application ダ one) handles, organic material or by these two kinds of adhesive-bonded fabrics that material constitutes.Like this, this fixture can make the incidence of tearing further reduce, and can suppress the temperature rise of insulated coil more steadily in the long term.
Moreover this fixture of insulated coil is the fixture of the insulated coil in the above-mentioned electric rotating machine, the inorganic filling material of filling high-termal conductivity at least in the above-mentioned rubber-like elastic body layer, in the metal-powder any.So, can further improve thermal conductivity.
In addition, this fixture of insulated coil is the fixture of above-mentioned insulated coil, forms outermost rubber-like elastic body laminar surface and is provided with grooving (ス リ Star ト) or pit.
So, the apparent spring rate of this fixture of insulated coil reduces, and is inserted into easily in the notch of insulated coil.In addition, to insulated coil, insert the fixture with this grooving is topped, so that the direction of grooving is with consistent with respect to the angled direction of the direction of inserting in notch.So, grooving can not blocked by the edge of iron core when inserting, and can suppress coming off and peeling off of rubber-like elastic body layer.Its result can reduce the not generation of insertion portion, can suppress the temperature rise of insulated coil more effectively.And this fixture is owing to have an enhancing lamella, so, to compare with the fixture that only constitutes by the rubber-like elastic body layer, the back rinding that produces when inserting is few.
And this fixture of insulated coil is the fixture of the insulated coil in the above-mentioned electric rotating machine, and the specific insulation of its overlapping layers direction is 10
0～10
5Ω cm.Therefore, by have the semi-conductive layer of the specific insulation in the same range as in the outermost layer setting of insulated coil, can make the identical current potential of maintenance between insulated coil surface and the iron core, can suppress partial discharge between the two, can prevent that fixture is rotten because of the partial discharge deterioration causes, damage, come off, peel off.Its result can make the heat that produces on the insulated coil more effectively be transferred on the iron core.
On the other hand, electric rotating machine of the present invention is characterized in that the insulated coil made in advance fixed by in the fixture of above-mentioned insulated coil any.So, this fixture of insulated coil, the material that employing is made of the lamination layer of enhancing lamella more than 1 layer and rubber-like elastic body layer, so, with only by rubber-like elastic body layer or filling the fixture that constitutes of the elastomer layer of inorganic particle compare, the tearing strength height, the phenomenon that this fixture that tearing caused of producing is peeled off, come off from insulated coil with constituting that steel-sheet side edge unshakable in one's determination is touched reduces.And, owing to constitute by strengthening lamella and rubber-like elastic body layer, so, can match with the concavo-convex of notch inner face, be difficult for producing the gap, can fix insulated coil securely, heat transfer efficiency is good simultaneously.And, because the phenomenon that this fixture is peeled off, split away off from insulated coil is few,, can provide reliability high electric rotating machine so can suppress the temperature rise of insulated coil steadily in the long term.
At this, electric rotating machine of the present invention, being provided with specific insulation at the outermost layer of insulated coil is 10
0～10
5The semi-conductive layer of Ω cm.Like this, as the lamination layer of fixture if adopt specific insulation scope identical materials with the overlapping layers direction, then can make the identical current potential of maintenance between insulated coil surface and the iron core, can suppress partial discharge between the two, as mentioned above can be more effectively the heat delivered that produces on the insulated coil to iron core.
Moreover above-mentioned electric rotating machine forms grease layer, oil mixture layer or the inorganic lubricant layer of high thermal conductivity between above-mentioned fixing piece and notch inner face.Like this, can improve the concavo-convex adaptation of notch inner face and insulated coil, help to improve thermal conductivity.And, owing to can reduce the notch inner face and as the friction on the lamination layer surface of fixture, so can further reduce the back rinding on lamination layer surface.
On the other hand, the fixing means of above-mentioned insulated coil, it is characterized in that: in the time of in the iron core notch that the insulated coil of making in advance is inserted and secured on electric rotating machine, insert after utilizing this fixture of insulated coil to cover at least one side of insulated coil.Like this, can suppress to cause the rubber-like elastic body layer to produce the phenomenon of tearing owing between this fixture of insulated coil and notch inner face, producing friction.Its result can make the high electric rotating machine of reliability.
Have, the fixing means of insulated coil of the present invention relates to the fixing means of above-mentioned insulated coil again, the opposite of notch inner face is covered make it become the rubber-like elastic body layer.Like this, can match, improve adaptation, make thermal conductivity better with the concavo-convex of notch inner face.
In addition, the fixing means of insulated coil of the present invention is: in the fixing means of above-mentioned insulated coil, adopt when forming outermost rubber-like elastic body laminar surface and being provided with the material of grooving as the fixture of insulated coil, will make this grooving certain angle be arranged during covering with respect to the direction of insertion of insulated coil.
Like this, grooving can not blocked by the edge of iron core when inserting, and can suppress coming off, peeling off of rubber-like elastic body layer.Therefore, can reduce the not generation of insertion portion, so can suppress the temperature rise of insulated coil more reliably.
Following with reference to accompanying drawing, describe embodiments of the invention in detail.
Fig. 1 is the part sectional drawing of electric rotating machine that the fixture of existing insulated coil and fixing means are described.
Fig. 2 is the part sectional drawing of electric rotating machine that the fixture of existing insulated coil and fixing means are described.
Fig. 3 is the part sectional drawing of electric rotating machine that the fixture of existing insulated coil and fixing means are described.
Fig. 4 is the part sectional drawing of electric rotating machine that the fixture of existing insulated coil and fixing means are described.
Fig. 5 is the outward appearance oblique view of an embodiment that expression relates to the fixture of insulated coil of the present invention.
Fig. 6 is the outward appearance oblique view of another embodiment that expression relates to the fixture of insulated coil of the present invention.
Fig. 7 is the part sectional drawing that the electric rotating machine test model that relates to fixture of the present invention has been adopted in expression.
Fig. 8 is the part sectional drawing that the electric rotating machine test model of existing fixed part has been adopted in expression.
Fig. 9 is the part sectional drawing that the electric rotating machine test model of existing another kind of fixture has been adopted in expression.
Figure 10 is the part sectional drawing that the electric rotating machine test model of existing other fixture has been adopted in expression.
Figure 11 is the part sectional drawing that the electric rotating machine test model of the fixture that relates to another embodiment of the present invention has been adopted in expression.
The explanation of good embodiment
Example with reference to the accompanying drawings further describes the present invention.Fig. 5 is an outward appearance oblique view of representing an example in the fixture of insulated coil of the present invention with type method.The figure shows fixture is lamination layer 5.
This lamination layer 5 has the adhesive-bonded fabric of handling through calendering, i.e. aromatic polyamides (ア ラ ミ De) fibrous paper 18.This aromatic polyamide fiber paper 18 is used to constitute the enhancing lamella of this example.Superimposedly on two faces as the aromatic polyamide fiber paper 18 of this enhancing lamella (bonding) high heat-conductive silicon rubber 19 that is used to constitute the rubber-like elastic body layer.So in this example, aromatic polyamide fiber paper 18 forms by the state of high heat-conductive silicon rubber 19 clampings, but is not limited only to this, also superimposed high heat-conductive silicon rubber 19 on a face only.And, also can use many Zhang Zengqiang lamellas, at least one face of each enhancing lamella, rubber-like elastic body is set.Moreover, as shown in Figure 6, also can adopt without crossing the aramid paper 18 ' that calendering is handled.
In this example, adopt aromatic polyamide fiber paper 18 as strengthening lamella, still, be not certainly only very in adopting this material.Strengthening lamella can prevent when insulated coil inserts or rubber-like elastic body layer generation tearing and cause and peel off, come off when using, and, in the gap that is inserted into insulated coil and notch, can adopt soft material, for example inorganic material, organic material or the adhesive-bonded fabric that constitutes by these two kinds of materials, inorganic material, the organic material of process calendering processing or fabric or adhesive-bonded fabric or the plastic tab that constitutes by these two kinds of materials.Except that adopting aromatic polyamide fiber paper, also can adopt glass fabric and polyester textile etc.
The rubber-like elastic body layer is not limited only to adopt Fig. 5 and high heat-conductive silicon rubber 19 shown in Figure 6.And, preferably contain as boron nitride, aluminium nitride or aluminium oxide the high-termal conductivity inorganic filling material and in the metal-powder any or contain two kinds simultaneously.
There is no particular restriction to the thickness of lamination layer 5, but according to the size of used notch, the size of insulated coil, suitably select all thickness, and the specific insulation of overlapping layers direction is preferably 10
0～10
5Ω cm.Not shown semi-conductive layer as if meet this electrical resistivity range in the outermost layer setting of insulated coil then can make between insulated coil surface and the iron core to keep same potential, can suppress partial discharge between the two.
Moreover, by the outermost layer that strengthens the lamination layer 5 that lamella and rubber-like elastic body layer constitute, be under the situation about constituting by the rubber-like elastic body layer promptly with the contacted layer of notch inner face, as shown in Figure 6, preferably have grooving 25.If have this grooving 25, the spring rate on then apparent descends, and insulated coil is inserted in the notch easily.And, under the situation that is provided with grooving 25, the best covering, the insertion method is: when covering the lamination layer 5 as fixture on the insulated coil, the formation direction of grooving 25 is with consistent with respect to the angle direction that direction of insertion had of this insulated coil in notch.Like this, grooving 25 can not blocked by the edge of iron core when inserting, and can suppress coming off, peeling off of rubber-like elastic body layer, can reduce the not appearance of insertion portion.The optimum depth of grooving 25 is: with the high heat-conductive silicon rubber 19 as the rubber-like elastic body layer is thickness direction, can arrive aromatic polyamides (ア ラ ミ De) paper 18 ', as this example, when on two faces, having formed high heat-conductive silicon rubber 19, be preferably in and all form grooving 25 on its both as the aramid paper 18 ' that strengthens lamella.
Like this, under the situation that is provided with grooving 25, for this grooving 25 and the direction that the direction of inserting in notch with respect to insulated coil forms certain angle are consistently carried out, when arranging, this lamination layer when covering on the insulated coil as long as note this directivity.
Moreover, be provided with at outermost layer under the situation of rubber-like elastic body layer, also can not to form grooving 25 as mentioned above, but many pits are set in its surface.Like this, also can reduce the apparent spring rate of rubber-like elastic body layer, insulated coil is inserted in the notch easily.Moreover, when being set, grooving 25 shown in Figure 6 compares, can further reduce the phenomenon of when inserting, being blocked by edge unshakable in one's determination.
As the lamination layer 5 of the fixture of above-mentioned insulated coil, it is arranged to cover at least on the two sides of the insulated coil of making in advance.And the insulated coil after fixture covers like this is inserted into and is fixed in the notch of iron core of electric rotating machine.
The covering method of lamination layer 5 on insulated coil is not limited only to this, also can utilize encapsulant (not shown)s such as adhesive to paste or twine, but under situation about need not this encapsulant covering, the thermal conductivity, mechanical property or stable on heating influence that not had by encapsulant etc. can be produced the high electric rotating machine of reliability.
When being arranged in an insulated coil that covers by lamination layer 5 in the notch, preferably make in high-termal conductivity lubricating grease (Network リ one プ) layer, oil mixture (オ イ Le コ Application パ ウ Application De) layer, the inorganic lubricant layer any between this lamination layer 5 and notch inner face.Like this, can improve the adaptation between insulated coil surface and the notch inner face, further improve thermal conductivity.Making any typical method between the centre in high-termal conductivity grease layer, oil mixture layer, the inorganic lubricant layer is it to be coated on the surface of lamination layer in advance.But if adopt the formation in advance it is coated on the notch inner face, its advantage is: can prevent that this lubricating grease etc. when carrying and keeping of superimposed 5 insulated coil that covers from peeling off.
Below utilize Fig. 7～test model shown in Figure 11, the thermal conductivity when describing the fixture that adopts this example in detail and the relevant embodiment of tearing strength.
Embodiment 1
Fig. 7 is the part sectional drawing that expression has the test model of following shape, and this shape is identical with the electric rotating machine that adopts the fixture that relates to one embodiment of the present of invention.The component part of this model has: the aluminium block 4 that iron core 2, the notch 3 that forms on this iron core 2, the profile that is made of lamination steel plate 1 is identical with insulated coil and be wrapped in the lamination layer 5 as fixture on the aluminium block 4.And the notch size of this model is long 22cm, wide 3cm, dark 20cm.To iron core 2 and aluminium block 4,, as shown in Figure 7, be that the center is provided with thermocouple 6,7,8,9,10 on the right side with aluminium block 4 in order to check thermal conductivity; Be provided with thermocouple 11,12,13,14,15 in the left side.And the upside of the aluminium block 4 in notch 3 and downside have been arranged the foamed polyurethane (ウ レ ダ Application) 16,17 as heat-barrier material respectively.And, also arranged the foamed polyurethane (not shown) at vertical two ends of aluminium block 4, so that reduce side as far as possible, promptly measure face heat radiation in addition from aluminium block 4.
Moreover, during the thermal conductivity of present embodiment when check adopting fixture of the present invention,, the thing that is equivalent to the insulated coil insulating barrier is not set in order to eliminate the influence of insulating barrier in the insulated coil, only adopt aluminium block 4.
As the lamination layer 5 of fixture used in the present embodiment, the aromatic polyamide fiber paper of the process calendering being handled by high heat-conductive silicon rubber 19 18 as shown in Figure 5 is clamped in middle making.
And the aluminium block 4 to the test model of this formation utilizes sheathed heater (Star one ズ ヒ one one), and the heat of input 300W utilizes each thermocouple shown in Figure 7 to measure the temperature at its each position.
According to this temperature, calculate the comprehensive hot percent of pass of the two sides of aluminium block 4.It is the results are shown in the table 1.
Comparative example 1
Fig. 8 is the part sectional drawing of the test model of electric rotating machine, is used to check the thermal conductivity when adopting the fixture that relates to prior art.This model only uses FRP sheet 20 on a face of aluminium block 4, to replace the lamination layer 5 of Fig. 7.Other formations, condition are identical during with embodiment 1 shown in Figure 7.And FRP20 is made of laminated glass cloth and epoxy resin.
To the aluminium block 4 of test model shown in Figure 8, utilize the heat of sheathed heater input 300W, utilize each thermocouple shown in Figure 8 to measure the temperature at its each position.According to this temperature, calculate the comprehensive hot percent of pass of the two sides of aluminium block 4, it the results are shown in table 1.
Comparative example 2
Fig. 9 is the part sectional drawing of the test model of electric rotating machine, the thermal conductivity when being used to check the fixture that adopts another kind to relate to prior art.This model only utilizes the FRP sheet 21 of corrugated section to replace the FRP sheet 20 of Fig. 8 on a face of aluminium block 4.Other formations, condition are identical during with comparative example 1 shown in Figure 8.And the FRP sheet 21 of corrugated section is identical with comparative example 1, is made of the glass cloth and the epoxy resin of lamination.
Figure 10 is the part sectional drawing of electric rotating machine test model, the thermal conductivity when being used to check the fixture that adopts another kind to relate to prior art.This model is not arranged fixture between the inner face of the side of aluminium block 4 and notch 3, gap 22 is intactly remained.This is to utilize the equilibrium of the size in the gauge of FRP sheet and gap 22 to simulate the situation that the part can not be inserted during fabrication.And gap 22 is by between the side of the inner face of notch 3 and aluminium block 4 local insertion of FRP sheet (not shown) being formed.
The comprehensive hot percent of pass of table 1. embodiment 1 and comparative example 1,2,3
| Embodiment 1 | Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| Comprehensive hot percent of pass | 223 | 142 | 194 | 100 |
(notes) are 100 to calculate with comparative example 3 all. easy more the passing through of the expression big more heat of numeral.
Can obviously find out from table 1: embodiment 1 compares with comparative example 1,2,3, and the joule heat energy that is produced in the comprehensive hot percent of pass height, insulated coil is transferred on the iron core expeditiously, can suppress temperature rise.
Figure 11 is the part sectional drawing of test model of the electric rotating machine of the expression fixture that adopts another embodiment of the present invention.This model, its component part has: the aluminium block 4 of the iron core 2 that is made of lamination steel plate 1, the notch 3 that forms on this iron core 2, analog insulation coil and be wrapped in lamination layer 5 on the aluminium block 4.And employed lamination layer 5 is the same with embodiment, as shown in Figure 5, by high heat-conductive silicon rubber 19 aromatic polyamide fiber paper 18 that has conductivity, handle through calendering is clamped in middle making.
Moreover, in the present embodiment, before being inserted in the notch 3, on the inner face of the both sides of notch 3, applied high-termal conductivity silicone grease (thermal conductivity is 0.8W/m ° of K) 23 to the aluminium block 4 that is provided with lamination layer 5.So, when being arranged into aluminium block 4 insertions in the notch 3, make silicone grease 23 between lamination layer 5 and notch 3.
In order to check thermal conductivity, unshakable in one's determination 2 and aluminium block 4 on, the same with embodiment 1, being provided with on the direction perpendicular to aluminium block 4 sides by 4 thermocouples is one group thermocouple 24.This thermocouple group 24 has 6 groups, wherein 3 groups be arranged on aluminium block 4 vertically on, other 3 groups are arranged on an opposite side, and aluminium block 4 is clipped in the middle, and the dimensional accuracy owing to aluminium block 4 and notch 3 is caused that the variation that comprehensive hot percent of pass produces in the vertical measures.The formation of other test models is identical with embodiment 1.
And the aluminium block 4 to test model utilizes sheathed heater, and the heat of input 300W utilizes each thermocouple shown in Figure 11 to measure the temperature at each position.According to this temperature, calculated the comprehensive hot percent of pass variation in the vertical of aluminium block 4 two sides.It the results are shown in table 2.
Comparative example 4
Except uncoated high-termal conductivity silicone grease on the inner face of notch 3, the test model for identical with embodiment 2 utilizes sheathed heater, and the heat of input 300W has been measured the temperature at each position with each thermocouple.According to this temperature, calculated the comprehensive hot percent of pass variation in the vertical of aluminium block 4 two sides.It the results are shown in table 2.
The comprehensive hot percent of pass of table 2. embodiment 2 and comparative example 4
| Temperature measuring positions | |||
| 1 | 2 | 3 | |
| | 100 | 100 | 100 |
| Comparative example 4 | 90 | 95 | 61 |
From table 2, can obviously find out: in measuring position 1,2, comprehensive hot percent of pass does not have significant difference, but in measuring position 3, the numerical value of embodiment 2 is very high, the joule heat energy that utilizes high-termal conductivity lubricating grease to make to produce in the insulated coil is transferred on the iron core expeditiously, can suppress temperature rise.
Utilize the lamination layer that relates to other embodiment 5 shown in Figure 6, the tearing strength when having grooving 25 is tested.The structure of this lamination layer 5 is: in the middle of by high heat-conductive silicon rubber 19 aramid paper 18 ' that rolls processing being clamped in.The high heat-conductive silicon rubber 19 on two sides, every 10cm have 20 groovings 25, and the degree of depth of groove reaches on the surface of aramid paper 18 '.
The lamination layer 5 of this structure is wound on the aluminium block 4 of analog insulation coil, make the direction of grooving 25 form miter angle with respect to direction of insertion, in the time of in being inserted into the notch identical 3, can being inserted into aluminium block 4 in the notch 3 and not making lamination layer 5 produce tearing with Fig. 7.
Comparative example 5
The lamination layer 5 of embodiment 3 is wound on the aluminium block 4, makes the direction of insertion of grooving 25, be inserted in the notch 3 then perpendicular to aluminium block 4.Other conditions are all identical with embodiment 3.
Its result, when inserting aluminium block 4, lamination layer 5 produces tearing in the contacted part in angle with the bottom surface of aluminium block 4.Therefore, insert when finishing, about 1/5 of lamination layer 5 is exposed, and produces the space between aluminium block 4 and notch 3 inner faces.
According to above situation, grooving 25 is set on the surface of lamination layer 5, it is wound under the situation that makes grooving and direction of insertion form miter angle on the aluminium block 4, compares perpendicular to the situation of inserting 2 directions, the space that between aluminium block 4 and notch 3, is not prone to tearing and is caused with grooving 25.So it has been established that:, can suppress temperature rise as if adopting this structure, then transmit in the insulated coil easily the Joule heat that is produced.
Claims (10)
1. insulated coil fixture, it is in the iron core notch that the insulated coil of making in advance is inserted into electric rotating machine fixedly the time, be arranged between the inner face of the side of insulated coil and notch, it is characterized in that: be made of lamination layer, this lamination layer has: at least one Zhang Zengqiang lamella; And superimposed rubber-like elastic body layer on a face of above-mentioned enhancing lamella at least;
Above-mentioned enhancing lamella is to select inorganic material, organic material for use or by this two kinds of fabrics that material constituted or adhesive-bonded fabric or plastic tab.
2. insulated coil fixture as claimed in claim 1 is characterized in that: in above-mentioned rubber-like elastic body layer filling at least a in high-termal conductivity inorganic filling material and the metal-powder.
3. as each the described insulated coil fixture in claim 1 or 2, it is characterized in that: form the rubber-like elastic body layer at outermost layer, and, on this rubber-like elastic body laminar surface, form grooving or pit.
4. as each the described insulated coil fixture in claim 1 or 2, it is characterized in that: the specific insulation of stack direction is 10
0～10
5Ω cm.
5. insulated coil fixture as claimed in claim 3 is characterized in that: the specific insulation of stack direction is 10
0～10
5Ω cm.
6. electric rotating machine, it is the insulated coil of making in advance is inserted in the notch unshakable in one's determination and constitutes, and it is characterized in that: arranged any fixture described in the claim 1～5 between the side of insulated coil and notch inner face.
7. electric rotating machine as claimed in claim 6 is characterized in that: between above-mentioned fixing piece and notch inner face, formed high-termal conductivity grease layer, oil mixture layer or inorganic lubricant layer.
8. insulated coil fixing means, it is characterized in that: when the insulated coil of making in advance being inserted in the notch of iron core of electric rotating machine fixedly, be to utilize each the fixture described in the claim 1～5, after the relative side covering of notch wall above-mentioned insulated coil and above-mentioned iron core, insert.
9. insulated coil fixing means as claimed in claim 8 is characterized in that: with the opposite face relative with the notch inner face is that the mode of rubber-like elastic body layer covers.
10. insulated coil fixing means, it is characterized in that: in the fixing means of insulated coil as claimed in claim 8 or 9, fixture as insulated coil, when the outermost rubber-like elastic body layer of use formation is provided with the structure of grooving, with respect to the direction of insertion of insulated coil, this grooving has certain angle ground and covers.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29107298A JP3739948B2 (en) | 1998-10-13 | 1998-10-13 | Insulating coil fixing member, rotating electric machine equipped with the fixing member, and insulating coil fixing method |
| JP291072/1998 | 1998-10-13 | ||
| JP291072/98 | 1998-10-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1250967A CN1250967A (en) | 2000-04-19 |
| CN1227798C true CN1227798C (en) | 2005-11-16 |
Family
ID=17764075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99122208 Expired - Fee Related CN1227798C (en) | 1998-10-13 | 1999-10-13 | Insulated winding fastener, rotating electric motor having such fastening means, and method for fastening such winding |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3739948B2 (en) |
| CN (1) | CN1227798C (en) |
| BR (1) | BR9904716B1 (en) |
| CA (1) | CA2285763C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3576119B2 (en) | 2001-04-27 | 2004-10-13 | 株式会社東芝 | Coil for rotating electric machine and my car tape used for insulation of this coil |
| JP4504143B2 (en) * | 2004-09-22 | 2010-07-14 | 株式会社東芝 | Fixing method of stator coil of rotating electric machine |
| JP5466117B2 (en) * | 2010-09-07 | 2014-04-09 | トヨタ自動車株式会社 | Method for manufacturing stator of electric motor and method for positioning stator coil |
| JP5839851B2 (en) * | 2011-06-23 | 2016-01-06 | 日立オートモティブシステムズ株式会社 | Rotating electric machine |
| CN102364825A (en) * | 2011-11-23 | 2012-02-29 | 哈尔滨电机厂有限责任公司 | High thermal conductivity groove fixing structure of large-scale air cooling generator stator bar |
| JP5727577B2 (en) * | 2013-11-11 | 2015-06-03 | ファナック株式会社 | Motor stator having coil fixing parts, motor, and unit coil fixing method |
| KR20170127034A (en) * | 2015-05-20 | 2017-11-20 | 엘지전자 주식회사 | COMPOSITE INSULATION MEMBER AND METHOD FOR MANUFACTURING THE SAME |
| DE102017203296A1 (en) | 2017-03-01 | 2018-09-06 | Robert Bosch Gmbh | Component of an electrical machine |
| EP3840186A4 (en) * | 2018-10-03 | 2022-05-11 | Hitachi Astemo, Ltd. | Rotating electric machine |
| JP7040428B2 (en) * | 2018-12-03 | 2022-03-23 | トヨタ自動車株式会社 | Stator |
| DE102019113789A1 (en) | 2019-05-23 | 2020-11-26 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Stator of an electrical machine |
-
1998
- 1998-10-13 JP JP29107298A patent/JP3739948B2/en not_active Expired - Fee Related
-
1999
- 1999-10-12 CA CA 2285763 patent/CA2285763C/en not_active Expired - Fee Related
- 1999-10-13 BR BR9904716A patent/BR9904716B1/en not_active IP Right Cessation
- 1999-10-13 CN CN 99122208 patent/CN1227798C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| BR9904716A (en) | 2000-08-29 |
| JP3739948B2 (en) | 2006-01-25 |
| BR9904716B1 (en) | 2011-09-06 |
| CN1250967A (en) | 2000-04-19 |
| CA2285763A1 (en) | 2000-04-13 |
| CA2285763C (en) | 2005-03-22 |
| JP2000125499A (en) | 2000-04-28 |
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