CN104578483A - Ventilation channel steel, manufacturing method thereof, ventilation structure and motor - Google Patents
Ventilation channel steel, manufacturing method thereof, ventilation structure and motor Download PDFInfo
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- CN104578483A CN104578483A CN201410832048.9A CN201410832048A CN104578483A CN 104578483 A CN104578483 A CN 104578483A CN 201410832048 A CN201410832048 A CN 201410832048A CN 104578483 A CN104578483 A CN 104578483A
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- 238000009423 ventilation Methods 0.000 title claims abstract description 309
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 297
- 239000010959 steel Substances 0.000 title claims abstract description 297
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 claims abstract description 42
- 238000004804 winding Methods 0.000 claims abstract description 25
- 238000004080 punching Methods 0.000 claims description 33
- 238000005273 aeration Methods 0.000 claims description 21
- 238000003475 lamination Methods 0.000 claims description 17
- 238000005520 cutting process Methods 0.000 claims description 11
- 230000001154 acute effect Effects 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 4
- 230000011218 segmentation Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 31
- 230000000694 effects Effects 0.000 abstract description 31
- 230000017525 heat dissipation Effects 0.000 abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 7
- 239000000112 cooling gas Substances 0.000 abstract 1
- 238000013461 design Methods 0.000 description 12
- 230000005855 radiation Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000019771 cognition Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 208000020442 loss of weight Diseases 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000010200 validation analysis Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
- H02K1/325—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium between salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
Abstract
The invention provides a ventilation channel steel, a manufacturing method thereof, a ventilation structure and a motor. The ventilation channel steel provided by the invention comprises a ventilation channel steel body, wherein at least one of two opposite side surfaces of the ventilation channel steel body is provided with a plurality of teeth. The ventilation structure comprises at least two iron core sections, wherein a plurality of tooth parts are arranged on the iron core sections, a slot for accommodating a winding is formed between the adjacent tooth parts on the same iron core section, the ventilation channel steel is arranged between the corresponding tooth parts of the adjacent iron core sections, and the teeth of the ventilation channel steel face the slot. According to the ventilation channel steel provided by the invention, the teeth can effectively break a boundary layer between the ventilation channel steel and cooling gas flowing through the ventilation channel, the heat dissipation area is increased, the cooling and heat dissipation effect is enhanced, meanwhile, the process is easy to realize, and the manufacturing difficulty is low.
Description
Technical field
The present invention relates to the cooling of motor, particularly relate to ventilation steel channel, its manufacture method, aeration structure and motor.
Background technology
Motor (comprising motor and generator) operationally, meeting produce power loss on the parts such as coil, iron core, this part loss distributes with the form of heat energy the most at last, if the Design of ventilation of motor is unreasonable, can cause that the temperature rise of motor is too high or local temperature rise is uneven.The too high meeting of temperature rise causes ageing of insulation, can make insulation electrical hydraulic performance decline during long-play, and local temperature rise is uneven can produce very large thermal stress, causes the permanent lesion on electric machine structure, finally causes electrical fault.Therefore the temperature rise reducing motor for improve motor safe clearance, extend motor useful life and to reduce the maintenance cost of motor all significant.
Radial ventilation methods for cooling is one of conventional methods for cooling of medium and small generator, and this type of cooling can increase area of dissipation, improves the power density of generator, is therefore widely used.In order to realize radial ventilation, the iron core of motor is generally divided into multiple stack of lamination, ventilation steel channel (or being called air duct slats) is provided with along the radial direction of motor between adjacent stack of lamination, ventilation steel channel is while playing a supporting role to each stack of lamination, space between adjacent stator core section is separated into ventilation ducts (or being called radial ducts), this ventilation ducts just can be used to carry out radial ventilation to carry out cooling heat dissipation to unshakable in one's determination and winding.The ventilation steel channel generally adopted at present is generally traditional bar shaped ventilation steel channel and I-shaped ventilation steel channel, and the cross section of bar shaped ventilation steel channel is rectangular, and the cross section of I-shaped ventilation steel channel is in " work " font or close to " work " font.
State in realization in the process of technical scheme, inventor finds that in prior art, at least there are the following problems:
The design of tradition ventilation channel-section steel and the aeration structure not impact that causes of the cooling effect of special concern ventilation steel channel on refrigerating gas.Traditional ventilation steel channel only plays the effect supporting and be separated out ventilation ducts between adjacent stator core section, and inventor thinks deeply discovery by analysis, the shape of ventilation steel channel can produce a very large impact the flowing of refrigerating gas in ventilation ducts, determine the quality of motor cooling performance, because under different ventilation steel channel shape, the turbulent situation flowing through the refrigerating gas of ventilation ducts can be different, and this will affect motor surface coefficient of heat transfer and partial drop of pressure, thus finally affect the temperature rise of motor.Therefore the profile design of ventilation steel channel is key technology, but the simultaneously design of ventilation steel channel also needs to consider the factors such as manufacturability, the reliability of installation and cost, this makes the design of ventilation steel channel have certain difficulty, although inventor finds that ventilation steel channel possesses important function, less about the research of this respect at present.
Summary of the invention
The object of the invention is that providing a kind of can be used for strengthening cooling heat dissipation effect, the ventilation steel channel being easy to technique realization and manufacture method thereof, and provides a kind of aeration structure and motor of cooling heat dissipation better effects if.
To achieve these goals, the invention provides a kind of ventilation steel channel, it comprises ventilation steel channel body, and at least one side in two of described ventilation steel channel body relative sides is provided with multiple tooth.
Preferably, wherein said tooth can be lance tooth, waveform tooth, rectangular teeth or stepped tooth.
Further, the flank profil line of wherein said lance tooth can be two line segments being total to end points, and the length of the line segment of the windward end of the close described ventilation steel channel body in two described line segments is greater than, be less than or equal to the length of the line segment of the leeward end near described ventilation steel channel body.
Preferably, the tooth pitch between wherein said multiple tooth can diminish to leeward end gradually from the windward end of described ventilation steel channel body.
Preferably, the datum width of wherein said ventilation steel channel body can become large from the windward end of described ventilation steel channel body to leeward end gradually.
Preferably, the windward end of wherein said ventilation steel channel body is positioned on head, and the width of described head can diminish gradually along the direction towards windward end.
Further, the face of the both sides, end top of the windward end of wherein said ventilation steel channel body can be plane, and the angle between described two planes is acute angle.
Preferably, the number of wherein said ventilation steel channel body can be two, and leave spacing between two described ventilation steel channel bodies, the multiple teeth on described ventilation steel channel body are arranged on the side relative with described spacing.
Preferably, wherein multiple tooth can be equipped with on two described sides of described ventilation steel channel body.
Preferably, wherein said ventilation steel channel body can comprise the punching that multi-disc stacks, and there is multiple gear piece at least one edge of described punching, the tooth described in described gear piece formation of punching described in multi-disc.
Present invention also offers a kind of aeration structure, it comprises at least two stack of laminations, described stack of lamination is provided with multiple teeth portion, the groove holding winding is configured between adjacent teeth portion on same stack of lamination, between the teeth portion of the correspondence of adjacent stator core section, be provided with arbitrary above-mentioned ventilation steel channel, the described tooth of described ventilation steel channel is towards described groove.
Present invention also offers a kind of motor, it comprises above-mentioned aeration structure.
The invention provides a kind of method manufacturing arbitrary above-mentioned ventilation steel channel, it comprises:
Cutting stock, obtains strip blank;
Segmentation cutting is carried out to described strip blank, obtains ventilation steel channel blank;
Cut is carried out to described ventilation steel channel blank, obtains ventilation steel channel body, and make that there is multiple tooth at least one side in two of ventilation steel channel body relative sides.
Invention additionally provides a kind of method manufacturing arbitrary above-mentioned ventilation steel channel, it comprises:
Blank is put into the die cavity of pressing mold;
Described blank is extruded, obtains ventilation steel channel body, and make that there is multiple tooth at least one side in two of ventilation steel channel body relative sides.
The present invention also provides a kind of method manufacturing above-mentioned ventilation steel channel in addition, and it comprises:
Go out multi-disc punching, make at least one edge of described punching with multiple gear piece;
Punching described in multi-disc stacked and is repeatedly pressed into ventilation steel channel body, making the described gear piece in punching described in multi-disc form tooth on the side of described ventilation steel channel body.
The main beneficial effect of above-mentioned ventilation steel channel provided by the invention is: tooth can break the boundary layer between ventilation steel channel and the refrigerating gas flowing through ventilation ducts effectively, increase the turbulent flow of refrigerating gas significantly, refrigerating gas is contacted fully with the winding of ventilation steel channel and side thereof, thus strengthen the cooling capacity of refrigerating gas, strengthening cooling heat dissipation effect; Tooth can the border of stronger ventilation channel-section steel, increases its area of dissipation, the heat radiation of intensified ventilation channel-section steel itself; Tooth is easy to adopt conventional manufacturing process to obtain, and manufacture difficulty is low, and corresponding processing cost is also lower; When flowing through the teeth groove between the tooth top of each tooth and each tooth, refrigerating gas is the Width multilated at ventilation steel channel substantially, the mode of this upset air-flow not only can widen the width of the air-flow of the high turbulent condition of ventilation steel channel side, make refrigerating gas better to the cooling effect of the winding of ventilation steel channel side, and the thickness of ventilation steel channel itself can be made relatively to do thinner.
Above-mentioned aeration structure provided by the invention and above-mentioned motor can accept the above-mentioned advantage of ventilation steel channel, and cooling heat dissipation better effects if effectively can reduce temperature rise, improve reliability, reduce costs.
The manufacture method of above-mentioned ventilation steel channel provided by the invention, its manufacturing process is simple, is easy to realize, and the ventilation steel channel that manufacture obtains possesses above-mentioned advantage.
Accompanying drawing explanation
Fig. 1 is the structural representation of the ventilation steel channel of the embodiment of the present invention one;
Fig. 2 is the structural representation of the ventilation steel channel of the embodiment of the present invention two;
Fig. 3 is the structural representation of the ventilation steel channel of the embodiment of the present invention three;
Fig. 4 is the structural representation of the ventilation steel channel of the embodiment of the present invention four;
Fig. 5 is the structural representation of the ventilation steel channel of the embodiment of the present invention five;
Fig. 6 is the structural representation of the ventilation steel channel of the embodiment of the present invention six;
Fig. 7 is the structural representation of the ventilation steel channel of the embodiment of the present invention seven;
Fig. 8 is the schematic perspective view of the ventilation steel channel of the embodiment of the present invention eight;
Fig. 9 is the exploded perspective schematic diagram of the ventilation steel channel of the embodiment of the present invention nine;
Figure 10 is the schematic perspective view of the aeration structure of the embodiment of the present invention ten;
Figure 11 is the cross-sectional schematic of the aeration structure of the embodiment of the present invention ten;
Figure 12 is the flow chart of the manufacture method of the ventilation steel channel of the embodiment of the present invention 11;
Figure 13 is the flow chart of the manufacture method of the ventilation steel channel of the embodiment of the present invention 12;
Figure 14 is the flow chart of the manufacture method of the ventilation steel channel of the embodiment of the present invention 13.
Drawing reference numeral illustrates:
1-ventilation steel channel; 11-ventilation steel channel body; 111-windward end; 112-leeward end; 113-punching; 1131-gear piece; 12-tooth; 121-lance tooth; 122-waveform tooth; 123-rectangular teeth; 13-spacing; 14-gas channel; 2-stack of lamination; 21-teeth portion; 3-winding; 4-slot wedge.
Embodiment
Below in conjunction with accompanying drawing, the ventilation steel channel of the embodiment of the present invention, its manufacture method, aeration structure and motor are described in detail.
Embodiment one
As shown in Figure 1, it is the structural representation of the ventilation steel channel of the embodiment of the present invention one.The ventilation steel channel of the embodiment of the present invention one, it comprises ventilation steel channel body 11, and at least one (such as shown in figure the being two) side in two of ventilation steel channel body 11 relative sides is provided with multiple tooth 12.
The ventilation steel channel of the embodiment of the present invention one is different from conventional tradition " work " font ventilation steel channel and bar shaped ventilation steel channel, and its tooth 12 arranged on the side of ventilation steel channel body 11 at least can bring following advantage:
1, the boundary layer between ventilation steel channel and the refrigerating gas flowing through ventilation ducts can effectively be broken, increase the turbulent flow of refrigerating gas significantly, refrigerating gas is contacted fully with the winding of ventilation steel channel and side thereof, thus strengthens the cooling capacity of refrigerating gas, strengthening cooling heat dissipation effect.
2, can the border of stronger ventilation channel-section steel, increase its area of dissipation, the heat radiation of intensified ventilation channel-section steel itself.
3, tooth-shape structure is easy to adopt conventional manufacturing process to obtain, and manufacture difficulty is low, and corresponding processing cost is also lower.Particularly, just can, by manufacturing, multiple tooth 12 be made to be integrative-structures with ventilation steel channel body 11 easily.
During teeth groove 4, between the tooth top flowing through each tooth 12 and each tooth 12, refrigerating gas is the Width multilated at ventilation steel channel substantially, the mode of this upset air-flow not only can widen the width of the air-flow of the high turbulent condition of ventilation steel channel side, make refrigerating gas better to the cooling effect of the winding of ventilation steel channel side, and the thickness of ventilation steel channel itself can be made relatively to do thinner.
Except having These characteristics, the ventilation steel channel of the present embodiment also has other features, is described respectively below.
In the present embodiment, two sides of ventilation steel channel body 11 are equipped with tooth 12, all can bring aforesaid effect in the both sides of ventilation steel channel like this.Multiple teeth 12 in the present embodiment are distribute asymmetrically in the both sides of ventilation steel channel body 11, this distribution form is applicable to the asymmetric situation of wind path of ventilation steel channel both sides ventilation ducts itself, the cooling capacity of ventilation steel channel both sides can be made to reach basically identical by this asymmetric design.
Ventilation steel channel generally has windward end and leeward end, and windward end is one end of corresponding refrigerating gas upstream, and leeward end is the one end in corresponding refrigerating gas downstream.The windward end 111 of the ventilation steel channel body 11 in the present embodiment is positioned on head, the width of this head diminishes gradually along the direction towards windward end 111, this design can bring good wind effect, reducing windage, the temperature effectively reducing motor winding when increasing little to electromotor cooling system resistance can being realized.Particularly, the face of the both sides, end top of the windward end 111 of ventilation steel channel body 11 can be plane, has angle between these two planes.In the present embodiment, this angle is acute angle.But, this angle also can be designed as obtuse angle, and acute angle is better than the wind effect at obtuse angle.In addition, the side of the both sides, end top of the windward end 111 of ventilation steel channel body 11 also can also be designed to curved surface, such as elliptical arc surface, namely the outline line of the windward end 111 of ventilation steel channel body 11 can be elliptic arc, so also can play good wind effect.
In the present embodiment, tooth 12 is lance tooth 121 (can be understood as multiple tooth 12 and form zigzag).The flank of tooth of the tooth top both sides of lance tooth 121 is plane, has angle between these two planes.Lance tooth 121 in the present embodiment, its flank profil line (flank of tooth the outline line that intercepts by the face perpendicular to the flank of tooth) is the line segments of two end points altogether, the length of the line segment of the windward end 111 of the close ventilation steel channel body 11 in these two line segments is greater than the length of the line segment of the leeward end 112 near ventilation steel channel body 11, namely the tip of this lance tooth 121 is more towards the side, downstream of refrigerating gas, can play the effect reducing windage like this.
In the present embodiment, the tooth pitch (spacing between adjacent tooth 12) between multiple tooth 12 is uniform, and multiple tooth 12 is close to and arranges successively.Except the wind-guiding position of said windward end 111 above, the datum width of ventilation steel channel body 11 is constant to leeward end 112 from windward end 111, even to pass the face at the middle part of each tooth 12 for datum level (or claiming calibration face), spacing between the datum level of ventilation steel channel body 11 both sides is datum width, then this datum width is equal from windward end 111 to leeward end 112, and the datum level of ventilation steel channel body 11 both sides is parallel in other words.In addition, whole ventilation steel channel is the structure of one.The number of ventilation steel channel body 11 is one.
Embodiment two
As shown in Figure 2, it is the structural representation of the ventilation steel channel of the embodiment of the present invention two.The tooth of the ventilation steel channel of the present embodiment is similarly lance tooth 121, its flank profil line is similarly the line segment that two are total to end points, the difference of the ventilation steel channel of the present embodiment and the ventilation steel channel of embodiment one is: the length of the line segment of the windward end 111 of the close ventilation steel channel body 11 in these two line segments is less than the length of the line segment of the leeward end 112 near ventilation steel channel body 11, namely the tip of this lance tooth 121 is more towards the side, upstream of refrigerating gas, effectively can increase the collision area of lance tooth 121 and cooling air like this, produce larger turbulent effect, widen the width of the air-flow of the high turbulent condition of ventilation steel channel side.
Embodiment three
As shown in Figure 3, it is the structural representation of the ventilation steel channel of the embodiment of the present invention three.The tooth of the ventilation steel channel of the present embodiment is similarly lance tooth 121, its flank profil line is similarly the line segment that two are total to end points, the ventilation steel channel of the present embodiment is with the main distinction of the ventilation steel channel of embodiment before: the length of the line segment of the windward end 111 of close the ventilation steel channel body 11 in these two line segments equals the length of the line segment of the leeward end 112 of close ventilation steel channel body 11, namely the tip of this lance tooth 121 is vertically in the direction of ventilation steel channel body 11, this shape is the compromise shape of the profile of tooth in embodiment one and embodiment two, compare embodiment one and can produce larger turbulent effect, compare embodiment two and can reduce windage.
In addition, in the present embodiment, multiple tooth (lance tooth 121) symmetrically distributes in the both sides of ventilation steel channel body 11.
Embodiment four
As shown in Figure 4, it is the structural representation of the ventilation steel channel of the embodiment of the present invention four.The ventilation steel channel of the present embodiment mainly contains the following aspects with the difference of the ventilation steel channel of embodiment before:
Tooth in the ventilation steel channel of the present embodiment is waveform tooth 122.For waveform tooth 122, the flank profil line that can be understood as multiple tooth forms wave.Adopt waveform tooth 122, the contact area with cooling air can be increased, strengthen radiating effect.
In addition, except the wind-guiding position of said windward end 111 above, (face through the middle part of each tooth is datum level to the datum width of the ventilation steel channel body 11 of the present embodiment, spacing between the datum level of ventilation steel channel body 11 both sides and datum width) become large from windward end 111 gradually to leeward end 112, the width of the ventilation ducts formed between such ventilation steel channel body 11 and its both sides winding then narrows to leeward end 112 gradually from windward end 111, cooling air heats up gradually owing to can absorb heat in flow process, this design can make to the cooling effect of winding in radial directions relatively evenly, avoid the infringement that winding brings because temperature rise is uneven.
Embodiment five
As shown in Figure 5, it is the structural representation of the ventilation steel channel of the embodiment of the present invention five.The ventilation steel channel of the present embodiment is with the difference of the ventilation steel channel of embodiment before: the tooth in the ventilation steel channel of the present embodiment is rectangular teeth 123.Adopt rectangular teeth 123 to increase turbulent flow, improve radiating effect.
Except several profiles of tooth that several embodiment describes above, tooth 12 can also be stepped tooth, and it also can increase turbulent flow, improves radiating effect.
Embodiment six
As shown in Figure 6, it is the structural representation of the ventilation steel channel of the embodiment of the present invention six.The ventilation steel channel of each embodiment before, tooth 12 is wherein equally distributed on the direction along ventilation steel channel body 11, ventilation steel channel and their difference of the present embodiment are: in the present embodiment, the windward end 111 of the tooth pitch self-ventilation channel-section steel body 11 between multiple tooth 12 diminishes gradually to leeward end 112, that is, tooth 12 near leeward end 112 arranges get Geng Mi than the tooth 12 of close windward end 111, so near leeward end 112, the turbulence level of refrigerating gas is higher, and refrigerating gas is when windward end 111 alee holds 112 to flow, its temperature raises gradually, therefore this design also can realize ventilation steel channel, the cooling effect of unshakable in one's determination and winding in radial directions relatively evenly, avoid ventilation steel channel, the infringement that unshakable in one's determination and winding brings because temperature rise is uneven.
Embodiment seven
As shown in Figure 7, it is the structural representation of the ventilation steel channel of the embodiment of the present invention seven.The ventilation steel channel of each embodiment before, the number of ventilation steel channel body 11 is wherein one, and ventilation steel channel and their difference of the present embodiment have:
In the present embodiment, the number of ventilation steel channel body 11 is two, spacing 13 is left between two ventilation steel channel bodies 11, multiple teeth 12 on each ventilation steel channel body 11 are arranged on the side relative with spacing 13, each ventilation steel channel body 11 of this sample embodiment only have side to have tooth 12, and the path between two ventilation steel channel bodies 11 can be used for refrigerating gas to flow through, such ventilation steel channel is divided into two, the contact area of ventilation steel channel and refrigerating gas can be increased, strengthen the radiating effect to ventilation steel channel, this path also can play the effect reducing windage to a certain extent simultaneously.
In addition, in the present embodiment, although the width of the head at windward end 111 place of ventilation steel channel body 11 also diminishes gradually along the direction towards windward end 111, but its concrete design is different, the side of the both sides, end top of the windward end 111 of the ventilation steel channel body 11 of the present embodiment is also plane, but the side of one of them plane and ventilation steel channel body 11 is same.And the head at windward end 111 place of the ventilation steel channel body 11 of the present embodiment also can be designed to the form that both sides are clinoplain as embodiment before.
Embodiment eight
As shown in Figure 8, it is the schematic perspective view of the ventilation steel channel of the embodiment of the present invention eight.The ventilation steel channel of the present embodiment is with the difference of the ventilation steel channel of embodiment before: in the present embodiment, ventilation steel channel body 11 is provided with the gas channel 14 running through ventilation steel channel body 11.Here gas channel 14 can increase the contact area of ventilation steel channel and refrigerating gas, strengthens the radiating effect to ventilation steel channel, and gas channel 14 also can play the effect reducing windage to a certain extent simultaneously.
Embodiment nine
As shown in Figure 9, it is the exploded perspective schematic diagram of the ventilation steel channel of the embodiment of the present invention nine.The ventilation steel channel of the present embodiment is with the difference of the ventilation steel channel of embodiment before: in the present embodiment, ventilation steel channel body 11 comprises the punching 113 that multi-disc stacks, there is multiple gear piece 1131 at least one (such as shown in figure being two) edge of punching 113, and the gear piece 1131 of multi-disc punching 113 forms tooth 12.This special structure is suitable for realizing producing in enormous quantities, can significantly save production cost.Particularly, first shape as required punching can be gone out, then that multi-disc punching is repeatedly molded, such as, if the thick 8mm of final ventilation steel channel, eight punchings can first be gone out, the thick 1mm of every sheet punching, then by they repeatedly pressure (or be called laminate) become a ventilation steel channel.
Above the ventilation steel channel of various embodiments of the present invention is illustrated, according to explanation above, ventilation steel channel provided by the invention, its structure has larger flexibility, and such as, ventilation steel channel can both sides tooth punching, space width can be uniformly, also can be uneven; Both sides can be waveform teeth, and the spacing of waveform tooth can be evenly also can be uneven; The tooth of various shape can symmetrically in the left and right sides, and also can be staggered certain distance; The width at ventilation steel channel two ends can be identical, can be not identical, and can be notch or bottom land according to the emphasis of winding heat radiation position and adjust.And ventilation steel channel provided by the invention, its structure itself is easy to realize, and like this just can adjust the design of ventilation steel channel easily on this basis, make it meet the cooling heat dissipation requirement of various reality.
There is based on ventilation steel channel provided by the invention the feature of tooth, ventilation steel channel provided by the invention also can be called as " tooth punching ventilation steel channel ", but, it is worth mentioning that, here " ventilation steel channel " is motor cooling technology field call sanctified by usage, and its cross section be different from other field is " channel-section steel " steel of grooved, and its material itself is also not limited to " steel ", except can be except metal, its material can also be have high thermal conductivity nonmetal.Be described to the aeration structure of the embodiment of the present invention below.
Embodiment ten
As shown in Figure 10 and Figure 11, wherein Figure 10 is the schematic perspective view of the aeration structure of the embodiment of the present invention ten, it illustrates state when observing from the outside of aeration structure, Figure 11 is the cross-sectional schematic of the aeration structure of the embodiment of the present invention ten, it illustrates state when observing from the inside of aeration structure, the aeration structure of the embodiment of the present invention, it comprises at least two (such as shown in figure being three) stack of laminations 2, stack of lamination 2 is provided with multiple (such as shown in figure being five) teeth portion 21, (figure middle slot does not mark to be configured for holding the groove of winding 3 between adjacent teeth portion 21 on same stack of lamination 2, filled by winding 3), the ventilation steel channel 1 of arbitrary above-described embodiment is provided with between the teeth portion 21 of the correspondence of adjacent stator core section 2, the tooth of ventilation steel channel 1 arranges (namely the side being provided with tooth of ventilation steel channel 1 is towards winding 3) towards groove.
The aeration structure of the present embodiment operationally, refrigerating gas flows along the direction in Figure 11 shown in dotted arrow in ventilation ducts, in flow process, cold gas cognition produces with the tooth of ventilation steel channel 1 both sides and collides, thus multilated on the Width of ventilation steel channel 1, form wider turbulent airflow, this turbulent airflow can carry out effective heat convection with the winding 3 of ventilation steel channel 1 both sides and teeth portion 21, thus improve the cooling effect of refrigerating gas significantly, simultaneously, tooth on ventilation steel channel 1 also can the area of dissipation of stronger ventilation channel-section steel 1, the heat radiation of intensified ventilation channel-section steel 1 itself.
Inventor is on the basis of this structure, Flow Field Calculation software is adopted to carry out simulation comparison, and platform validation by experiment, result shows, the ventilation steel channel of above-mentioned different embodiment compares tradition ventilation channel-section steel, effectively can reduce the motor winding temperature rise of 5 ~ 10K, this will significantly improve the safe clearance of motor, extends its useful life and reduces its maintenance cost.And if maintenance electric machine temperature rise is constant, the optimal design of motor then can be coordinated to realize, and power density increases, the reduction of loss of weight and cost, such as, as designed according to electrical machine insulation B level, keep temperature rise 90K constant, be equipped with above-mentioned ventilation steel channel energy direct saving copper 5%.
In the present embodiment, be also connected with slot wedge 4 between adjacent teeth portion 21 in order to the winding 3 in locking slot, prevent it from producing radial displacement.Particularly, the stack of lamination 2 of the present embodiment can be the stack of lamination of stator core (" iron core " or be called " iron core "), also can be the stack of lamination of rotor core.And for the aeration structure of some motor, it is also provided with ventilation channel plate between adjacent stack of lamination 2, in this case, can be welded on ventilation channel plate with the ventilation steel channel of the welding procedures such as spot welding by above-described embodiment.
The aeration structure that the present embodiment provides can be applied in the motor such as generator, motor of the air-cooled form of existing employing, such as can be applied in large-scale wind driven generator, medium and small generator and middle-size and small-size motor, ventilation steel channel is wherein except promoting significantly except cooling heat dissipation effect, also be easy to technique realize, therefore possess application prospect widely.Below the manufacture method of the ventilation steel channel of the embodiment of the present invention is described, when reading the manufacture method of ventilation steel channel of the embodiment of the present invention, can simultaneously see accompanying drawing before.
Embodiment 11
As shown in figure 12, it is the flow chart of the manufacture method of the ventilation steel channel of the embodiment of the present invention 11.The manufacture method of the present embodiment, it comprises:
Step 101: cutting stock, obtains strip blank;
Step 102: carry out segmentation cutting to strip blank, obtains ventilation steel channel blank;
Step 103: carry out cut to ventilation steel channel blank, obtains ventilation steel channel body 11, and makes that there is multiple tooth 12 at least one side in two of ventilation steel channel body 11 relative sides.
Cutting in the manufacture method of the ventilation steel channel of the present embodiment and cut are all easy to realize, manufacture process is simple, can be used for manufacturing any one ventilation steel channel in above-described embodiment one to embodiment eight, ventilation steel channel body 11 and tooth 12 that it obtains are structures of overall one.
Particularly, in a step 101, can use cutting machine cutting stock, blanking is specifically as follows steel plate.By selecting the steel plate of respective thickness, the thickness requirement of ventilation steel channel body 11 can be met.In a step 102, cutting machine can be used to carry out segmentation cutting to ventilation steel channel blank.In step 103, stock-removing machine can be used to carry out cut to ventilation steel channel blank.
Further, if the ventilation steel channel that will manufacture, wherein the number of ventilation steel channel body 11 is two (such as ventilation steel channels of embodiment seven), so in this manufacture method:
Step 103 specifically can comprise: carry out cut to ventilation steel channel blank, obtains ventilation steel channel body 11, and makes that there is multiple tooth 12 side in two of ventilation steel channel body 11 relative sides;
And this manufacture method also comprises: place two ventilation steel channel bodies 11, make to leave spacing 13 between two ventilation steel channel bodies 11, and the multiple teeth 12 on ventilation steel channel body 11 are positioned on the side relative with spacing 13.
Embodiment 12
As shown in figure 13, it is the flow chart of the manufacture method of the ventilation steel channel of the embodiment of the present invention 12.The manufacture method of the present embodiment, it comprises:
Step 201: die cavity blank being put into pressing mold;
Step 202: extrude blank, obtains ventilation steel channel body 11, and makes that there is multiple tooth 12 at least one side in two of ventilation steel channel body 11 relative sides.
Extruding in the manufacture method of the ventilation steel channel of the present embodiment is easy to realize, can one-shot forming, manufacture process is simple, can be used for manufacturing any one ventilation steel channel in above-described embodiment one to embodiment eight, and ventilation steel channel body 11 and tooth 12 that it obtains also are the structures of overall one.
Particularly, in step 201, the shape of the die cavity of pressing mold can match with the profile of any one ventilation steel channel in above-described embodiment one to embodiment eight.In step 202., extruder can be used to extrude blank.
Further, if the ventilation steel channel that will manufacture, wherein the number of ventilation steel channel body 11 is two (such as ventilation steel channels of embodiment seven), so in this manufacture method:
Step 201 specifically can comprise: extrude blank, obtains ventilation steel channel body 11, and makes that there is multiple tooth 12 side in two of ventilation steel channel body 11 relative sides;
And this manufacture method also comprises: place two ventilation steel channel bodies 11, make to leave spacing 13 between two ventilation steel channel bodies 11, and the multiple teeth 12 on ventilation steel channel body 11 are positioned on the side relative with spacing 13.
Embodiment 13
As shown in figure 14, it is the flow chart of the manufacture method of the ventilation steel channel of the embodiment of the present invention 13.The manufacture method of the present embodiment, it comprises:
Step 301: go out multi-disc punching 113, makes at least one edge of punching 113 with multiple gear piece 1131;
Step 302: multi-disc punching 113 stacked and be repeatedly pressed into ventilation steel channel body 11, makes the gear piece 1131 in multi-disc punching 113 form tooth 12 on the side of ventilation steel channel body 11.
Punching in the manufacture method of the ventilation steel channel of the present embodiment, repeatedly press through Cheng Jun be easy to realize, manufacture process is simple, can be used for the ventilation steel channel manufacturing above-described embodiment nine, the punching 113 that it obtains and the gear piece 1131 on it are one, but whole ventilation steel channel body 11 is not one.The manufacture method of the ventilation steel channel of the present embodiment is suitable for large batch of production, can significantly save production cost.Particularly, in step 301, sheet-punching machine can be used to go out multi-disc punching 113.
In sum, the optimal technical scheme that the embodiment of the present invention provides at least possesses following characteristics:
1, the present invention is by increasing dentalation in ventilation steel channel both sides, effectively break the boundary layer between channel-section steel and cooling-air, increase turbulent effect, cooling air is fully contacted with the winding of channel-section steel and both sides, greatly enhance radiating effect, enhance the cooling capacity of refrigerating gas, compensate for the blank that ventilation steel channel form is single.Meanwhile, tooth punching also makes ventilation steel channel border strengthen, and adds area of dissipation.Show according to finite element simulation and measured result, multi-form channel-section steel can effectively reduce motor winding temperature 5-10K;
2, ventilation steel channel head adopts pointed form (can be acute angle or arc), possesses good wind effect, achieving when increasing little to electromotor cooling system resistance, effectively reducing motor winding temperature;
3, be easy to technique realize.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (15)
1. a ventilation steel channel, is characterized in that, comprises ventilation steel channel body, and at least one side in two of described ventilation steel channel body relative sides is provided with multiple tooth.
2. ventilation steel channel according to claim 1, is characterized in that, described tooth is lance tooth, waveform tooth, rectangular teeth or stepped tooth.
3. ventilation steel channel according to claim 2, it is characterized in that, the flank profil line of described lance tooth is two line segments being total to end points, and the length of the line segment of the windward end of the close described ventilation steel channel body in two described line segments is greater than, be less than or equal to the length of the line segment of the leeward end near described ventilation steel channel body.
4. ventilation steel channel according to claim 1, is characterized in that, the tooth pitch between described multiple tooth diminishes to leeward end gradually from the windward end of described ventilation steel channel body.
5. ventilation steel channel according to claim 1, is characterized in that, the datum width of described ventilation steel channel body becomes large from the windward end of described ventilation steel channel body gradually to leeward end.
6. ventilation steel channel according to claim 1, is characterized in that, the windward end of described ventilation steel channel body is positioned on head, and the width of described head diminishes gradually along the direction towards windward end.
7. ventilation steel channel according to claim 6, is characterized in that, the face of the both sides, end top of the windward end of described ventilation steel channel body is plane, and the angle between described two planes is acute angle.
8. the ventilation steel channel according to claim 1 or 6, it is characterized in that, the number of described ventilation steel channel body is two, and leave spacing between two described ventilation steel channel bodies, the multiple teeth on described ventilation steel channel body are arranged on the side relative with described spacing.
9. ventilation steel channel according to claim 1, is characterized in that, two described sides of described ventilation steel channel body are equipped with multiple tooth.
10. ventilation steel channel according to claim 1, is characterized in that, described ventilation steel channel body comprises the punching that multi-disc stacks, and there is multiple gear piece at least one edge of described punching, the tooth described in described gear piece formation of punching described in multi-disc.
11. 1 kinds of aeration structures, it is characterized in that, comprise at least two stack of laminations, described stack of lamination is provided with multiple teeth portion, the groove holding winding is configured between adjacent teeth portion on same stack of lamination, between the teeth portion of the correspondence of adjacent stator core section, be provided with the ventilation steel channel in claim 1 to 10 described in arbitrary claim, the described tooth of described ventilation steel channel is towards described groove.
12. 1 kinds of motors, is characterized in that, comprise aeration structure according to claim 11.
The method of ventilation steel channel described in arbitrary claim in 13. 1 kinds of manufacturing claims 1 to 9, is characterized in that, comprising:
Cutting stock, obtains strip blank;
Segmentation cutting is carried out to described strip blank, obtains ventilation steel channel blank;
Cut is carried out to described ventilation steel channel blank, obtains ventilation steel channel body, and make that there is multiple tooth at least one side in two of ventilation steel channel body relative sides.
The method of ventilation steel channel described in arbitrary claim in 14. 1 kinds of manufacturing claims 1 to 9, is characterized in that, comprising:
Blank is put into the die cavity of pressing mold;
Described blank is extruded, obtains ventilation steel channel body, and make that there is multiple tooth at least one side in two of ventilation steel channel body relative sides.
The method of ventilation steel channel described in 15. 1 kinds of manufacturing claims 10, is characterized in that, comprising:
Go out multi-disc punching, make at least one edge of described punching with multiple gear piece;
Punching described in multi-disc stacked and is repeatedly pressed into ventilation steel channel body, making the described gear piece in punching described in multi-disc form tooth on the side of described ventilation steel channel body.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410832048.9A CN104578483B (en) | 2014-12-26 | 2014-12-26 | Ventilation channel steel, manufacturing method thereof, ventilation structure and motor |
| KR1020150092132A KR101770887B1 (en) | 2014-12-26 | 2015-06-29 | Ventilative channel steel as well as manufacturing method, ventilating structure and motor thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410832048.9A CN104578483B (en) | 2014-12-26 | 2014-12-26 | Ventilation channel steel, manufacturing method thereof, ventilation structure and motor |
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| Publication Number | Publication Date |
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| CN104578483A true CN104578483A (en) | 2015-04-29 |
| CN104578483B CN104578483B (en) | 2017-06-27 |
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| KR (1) | KR101770887B1 (en) |
| CN (1) | CN104578483B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021047250A1 (en) * | 2019-09-09 | 2021-03-18 | 西安中车永电捷力风能有限公司 | Rotor ventilation channel plate and rotor iron core structure |
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| WO2021047250A1 (en) * | 2019-09-09 | 2021-03-18 | 西安中车永电捷力风能有限公司 | Rotor ventilation channel plate and rotor iron core structure |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20160079610A (en) | 2016-07-06 |
| CN104578483B (en) | 2017-06-27 |
| KR101770887B1 (en) | 2017-08-23 |
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