CN102420485A - Main pole coil and direct current motor with main pole coil - Google Patents
Main pole coil and direct current motor with main pole coil Download PDFInfo
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- CN102420485A CN102420485A CN201110455823XA CN201110455823A CN102420485A CN 102420485 A CN102420485 A CN 102420485A CN 201110455823X A CN201110455823X A CN 201110455823XA CN 201110455823 A CN201110455823 A CN 201110455823A CN 102420485 A CN102420485 A CN 102420485A
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Abstract
The invention discloses a main pole coil for a direct current motor. The main pole coil comprises a first-layer coil (1) and a second-layer coil (2) which are attached to each other, wherein the frame size of the first-layer coil (1) is larger than that of the second-layer coil (2); an annular region (3) with a triangular cross section is formed at steps on the peripheral walls of the first-layer coil (1) and the second-layer coil (2); and a first radiation metal plate (4) is arranged in the annular region (3). By the structure, the radiation of the main pole coil is accelerated, heat is prevented from being accumulated in the main pole coil, the thermal resistance of a radiation loop is decreased, and the temperature rise of a stator is decreased, so that heating and radiation in the direct current are relatively balanced, and the service life of the direct current motor is greatly prolonged. The invention also discloses the direct current motor with the main pole coil. The direct current motor has the same effects.
Description
Technical field
The present invention relates to technical field of motors, relate in particular to a kind of main pole coil that is used for direct current machine.In addition, the invention still further relates to a kind of direct current machine that comprises above-mentioned main pole coil.
Background technology
Motor is meant according to the law of electromagnetic induction realizes electric energy conversion or a kind of calutron that transmits.Divide by the working power kind: can be divided into direct current machine and alternating current machine; Direct current machine generally includes parts such as stator, rotor, support and brush.
In the DC motor running, its inner meeting produces copper loss, iron loss and other stray loss etc., and these loss meetings cause motor internal heating, temperature to raise.On the other hand, motor also can dispel the heat in running.Have only when heating and heat radiation when reaching poised state, the direct current machine temperature inside no longer rises, but stably remains on the level, and motor could the running of normal and stable ground; If heating greater than heat radiation, makes the motor internal temperature rise increase, the insulation system that can aggravate motor is aging, shortens the useful life of motor greatly, has a strong impact on the safety and the reliability of motor.
In each parts of direct current machine; The temperature rise of stator coil is maximum for the harm of motor; Stator coil comprises main pole coil and attaches the polar curve circle; The radiator structure that attaches the polar curve circle is simple relatively, and its heating is little to the electric machine temperature rise influence, and the caloric value of main pole coil accounts for the overwhelming majority of stator coil caloric value.Therefore, how designing the structure of the main pole coil of stator coil, make it have thermal diffusivity preferably, is vital problem for direct current machine.
Please refer to Fig. 1 to Fig. 3, Fig. 1 is the front view of the main pole coil of direct current machine in the prior art; Fig. 2 is the right view of Fig. 1; Fig. 3 be among Fig. 1 A-A to cutaway view; Briefly introduce the defective that this main pole coil exists in the course of the work below.
As shown in Figure 1; This main pole coil comprise the ground floor coil 1 that fit to be provided with ' with second layer coil 2 '; Ground floor coil 1 ' with second layer coil 2 ' the winding average level be provided with; Wherein ground floor coil 1 ' the housing size greater than second layer coil 2 ' the housing size, therefore the ladder place of two-layer coil can form cross section be leg-of-mutton annulus 3 ', this annulus 3 ' be the main region that heat energy is detained.
For accelerate above-mentioned annulus 3 ' heat radiation; As shown in Figures 2 and 3, this main pole coil above-mentioned annulus 3 ' be provided with fill mud 4 ', like this; After producing heat energy in the course of work of main pole coil; Since the above-mentioned annulus 3 of filling mud 4 ' filling ', stoped the hot-air that flows out by coil inside in annulus 3 ' delay, accelerated the heat radiation of main pole coil to a certain extent.Yet the energy consumption that this method can not initiatively produce coil inside conducts, and radiating effect is not good, causes direct current machine the higher phenomenon of temperature rise still usually to occur, influences the useful life of direct current machine.
In view of this, demand urgently to above-mentioned technical problem, the structure of the main pole coil of direct current machine of the prior art is done further optimal design, strengthen the heat radiation of main pole coil, reduce the temperature rise of the stator of direct current machine, improve the useful life of direct current machine.
Summary of the invention
The technical problem that the present invention will solve is that a kind of main pole coil that is used for direct current machine is provided, and this main pole coil can strengthen the thermal diffusivity of main pole coil, reduces the temperature rise of the stator of direct current machine, improves the useful life of direct current machine.Another technical problem that the present invention will solve is that a kind of direct current machine that comprises above-mentioned main pole coil is provided.
For solving the problems of the technologies described above; The present invention provides a kind of main pole coil that is used for direct current machine; Comprise the ground floor coil and the second layer coil of fitting and being provided with; The housing size of ground floor coil is greater than the housing size of second layer coil, and it is leg-of-mutton annulus that the ladder place of the periphery wall of the periphery wall of said ground floor coil and said second layer coil forms cross section; Be provided with first heat-dissipating metal sheet in the said annulus.
Preferably, said first heat-dissipating metal sheet is first heat-dissipating aluminium plate.
Preferably, be equipped with above-mentioned first heat-dissipating aluminium plate in two linearity sectors that are oppositely arranged of said annulus, it is said leg-of-mutton tubular structure that said first heat-dissipating aluminium plate bending is cross section.
Preferably, also comprise bandage, the outside of said first heat-dissipating aluminium plate, said ground floor coil and said second layer coil is fixed in said bandage colligation.
Preferably, said bandage is specially shrink belt.
Preferably, be provided with second heat-dissipating metal sheet in the gap between said ground floor coil and the said second layer coil.
Preferably, said second heat-dissipating metal sheet is second heat-dissipating aluminium plate.
Preferably, said first heat-dissipating aluminium plate and said second heat-dissipating aluminium plate welding.
Preferably, said second heat-dissipating aluminium plate is the aluminium sheet that heat conductivility is superior to said first heat-dissipating aluminium plate.
The present invention provides a kind of main pole coil that is used for direct current machine; Comprise the ground floor coil and the second layer coil of fitting and being provided with; The housing size of ground floor coil is greater than the housing size of second layer coil, and it is leg-of-mutton annulus that the ladder place of the periphery wall of the periphery wall of ground floor coil and second layer coil forms cross section; Be provided with first heat-dissipating metal sheet in the annulus.
Adopt this structure, in the course of work of direct current machine, when main pole coil produces heat energy; First heat-dissipating metal sheet can play conductive force, and the heat energy of ground floor coil and second layer coil inside is disseminated away, compares prior art and adopts and fill the main pole coil that mud is filled this annulus; Main pole coil provided by the present invention has been accelerated heat radiation; It is inner to have avoided heat energy to seal at main pole coil, reduces the thermal resistance of heat-radiation loop, reduces the temperature rise of stator; Make the state that heating that direct current machine is inner and heat radiation reach a relative equilibrium, the useful life of improving direct current machine greatly.
In another kind of embodiment, on the basis of above-mentioned first heat-dissipating metal sheet, first heat-dissipating metal sheet, can also be provided with second heat-dissipating metal sheet in the gap between above-mentioned ground floor coil and the said second layer coil.Adopt this structure, when direct current machine produced heat energy in running, the heat energy that the ground floor coil of the second heat-dissipating metal sheet both sides, second layer coil produce can conduct to the two ends up and down of second heat-dissipating metal sheet, and then is distributed to the outside of main pole coil.This shows that second heat-dissipating metal sheet can further be accelerated the heat radiation of main pole coil, reduce the temperature rise of the stator of direct current machine, the useful life of further improving direct current machine.
The present invention also provides a kind of direct current machine, comprises stator and rotor; Said stator adopts aforesaid main pole coil.
Because above-mentioned main pole coil has above-mentioned technique effect, therefore, comprises that the direct current machine of this main pole coil also should have identical technique effect, repeats no more at this.
Description of drawings
Fig. 1 is the front view of the main pole coil of direct current machine in the prior art;
Fig. 2 is the right view of Fig. 1;
Fig. 3 be among Fig. 1 A-A to cutaway view;
Fig. 4 is the front view of a kind of embodiment of main pole coil provided by the present invention;
Fig. 5 is the right view of Fig. 4;
Fig. 6 be among Fig. 4 A-A to cutaway view;
Fig. 7 is the expanded view of the heat-dissipating metal sheet among Fig. 4;
Fig. 8 is the structural representation of the heat-dissipating metal sheet among Fig. 4.
Wherein, Reference numeral among Fig. 1 to Fig. 3 and the corresponding relation between the component names are:
Ground floor coil 1 '; Second layer coil 2 '; Annulus 3 '; Filling mud 4 ';
Reference numeral and the corresponding relation between the component names among Fig. 4 to Fig. 8 are:
Embodiment
Core of the present invention is that a kind of main pole coil that is used for direct current machine is provided, and it can accelerate the heat radiation of main pole coil, reduces the temperature rise of the stator of direct current machine, improves the useful life of direct current machine.Another core of the present invention is that a kind of direct current machine that comprises above-mentioned main pole coil is provided.
In order to make those skilled in the art understand technical scheme of the present invention better, the present invention is done further detailed description below in conjunction with accompanying drawing and specific embodiment.
Please refer to Fig. 4 to Fig. 6, Fig. 4 is the front view of a kind of embodiment of main pole coil provided by the present invention; Fig. 5 is the right view of Fig. 4; Fig. 6 be among Fig. 4 A-A to cutaway view.
In a kind of embodiment; As shown in the figure; The present invention provides a kind of main pole coil that is used for direct current machine; This main pole coil comprises the ground floor coil 1 and second layer coil 2 of fitting and being provided with, and the housing size of ground floor coil 1 is greater than the housing size of second layer coil 2, and it is leg-of-mutton annulus 3 that the ladder place of the periphery wall of the periphery wall of ground floor coil 1 and second layer coil 2 forms cross section; Be provided with first heat-dissipating metal sheet 4 in the annulus 3.
Adopt this structure, in the course of work of direct current machine, when main pole coil produces heat energy; First heat-dissipating metal sheet 4 can play conductive force, and ground floor coil 1 and second layer coil 2 inner heat energy are disseminated away, compares prior art and adopts the main pole coil of filling this annulus 3 of mud filling; Main pole coil provided by the present invention has been accelerated heat radiation; It is inner to have avoided heat energy to seal at main pole coil, reduces the thermal resistance of heat-radiation loop, reduces the temperature rise of stator; Make the state that heating that direct current machine is inner and heat radiation reach a relative equilibrium, the useful life of improving direct current machine greatly.
What specify is; Do not limit first heat-dissipating metal sheet 4 in the above-mentioned embodiment and be specially which kind of metallic plate; Do not limit the concrete shape and the fixed form of first heat-dissipating metal sheet 4 yet; Every first heat-dissipating metal sheet 4 that in above-mentioned annulus 3, is provided with, the main pole coil that can reduce stator temperature rise all belongs in protection scope of the present invention.
In addition, the noun of locality that occurs among this paper " interior " refers to the direction that upper and lower, left and right side among Fig. 6 is pointed to the center of vertical center line; The noun of locality " outward " refers to the direction of its upper and lower, left and right side of center sensing of vertical center line among Fig. 6; Should be appreciated that these nouns of locality are that benchmark is set up with the accompanying drawing, their appearance should not influence protection scope of the present invention.
The specific constructive form of above-mentioned first heat-dissipating metal sheet 4 can also further be set.
In concrete scheme, above-mentioned first heat-dissipating metal sheet 4 can be first heat-dissipating aluminium plate.Particularly, pure aluminum plate can be, also aluminium alloy plate can be.Aluminium alloy is most widely used one type of non-ferrous metal structural material in the industry; Be in fine aluminium, to add certain element to form alloy, both kept advantages such as fine aluminium light weight, also have higher intensity; And machine-shaping easily has good weldability and thermal conductivity.Therefore, adopt first heat-dissipating aluminium plate not only can reduce the temperature rise of stator here, can also guarantee the lighter weight of main pole coil, and convenient processing and manufacture is simple.Certainly, first heat-dissipating metal sheet 4 can also adopt other metallic plates except adopting aluminium sheet.
The shape of above-mentioned first heat-dissipating aluminium plate can also further be set.
Please refer to Fig. 7, Fig. 7 is the expanded view of the heat-dissipating metal sheet among Fig. 4.
In the another kind of embodiment, as shown in Figure 7, be equipped with above-mentioned first heat-dissipating aluminium plate in two linearity sectors that are oppositely arranged of above-mentioned annulus 3, it is leg-of-mutton tubular structure that first heat-dissipating aluminium plate is bent into cross section.
Adopt this structure; As shown in Figure 6; Because first heat-dissipating aluminium plate is bent into and the identical tubular structure of annulus 3 cross sections; Make the horizontal plane of tubular structure fit in the horizontal periphery wall of second layer coil 2, the vertical plane of tubular construction fits in the vertical madial wall of ground floor coil 1, so more helps accelerating the heat radiation of main pole coil.And this tubular construction is formed by first heat-dissipating aluminium plate bending of an integral body, makes the entire heat dissipation loop smooth, compares the tubular construction that is by a plurality of first heat-dissipating aluminium plates connections, can further strengthen radiating effect.Certainly, above-mentioned first heat-dissipating aluminium plate is not limited in and is bent into above-mentioned tubular construction, and it can also be other shapes.
Further, above-mentioned main pole coil can also comprise bandage 5, and the outside of first heat-dissipating aluminium plate, ground floor coil 1 and second layer coil 2 is fixed in bandage 5 colligations.
In the concrete scheme, above-mentioned bandage 5 can be specially shrink belt.Adopt above-mentioned first heat-dissipating aluminium plate of shrink belt colligation, can realize the fixed-site of first heat-dissipating aluminium plate.In addition; When direct current machine inside produces heat energy in the course of the work; Shrink belt can shrink along with increasing of heat energy slightly; This makes the fixing more firm of the heat-dissipating aluminium plate of winning, and avoids the phenomenon that first heat-dissipating aluminium plate drops in the direct current machine running, has further strengthened the functional reliability and the stability of main pole coil.Further, can adopt thickness is the shrink belt of 0.1mm, and this makes shrink belt both be convenient to colligation, can not influence the heat radiation of main pole coil again.Certainly, can also adopt the shrink belt of other thickness.
More specifically, the two ends of the tubular construction that above-mentioned first heat-dissipating aluminium plate forms all are banded with above-mentioned shrink belt, can further guarantee the location of first heat-dissipating aluminium plate like this.Certainly, the bandage 5 of fixing first heat-dissipating aluminium plate of above-mentioned colligation is not limited in shrink belt, can also be other bandages.
Other versions of above-mentioned main pole coil can also further be set.
In another kind of embodiment, on the basis of above-mentioned first heat-dissipating metal sheet 4, can also be provided with second heat-dissipating metal sheet 6 in the gap between above-mentioned ground floor coil 1 and the second layer coil 2.
Adopt this structure; When direct current machine produces heat energy in running; The heat energy that the ground floor coil 1 of second heat-dissipating metal sheet, 6 both sides, second layer coil 2 produce can conduct to the two ends up and down of second heat-dissipating metal sheet 6, and then is distributed to the outside of main pole coil.This shows that second heat-dissipating metal sheet 6 can further be accelerated the heat radiation of main pole coil, reduce the temperature rise of the stator of direct current machine, the useful life of further improving direct current machine.
With above-mentioned first heat-dissipating metal sheet 4 similarly, above-mentioned second heat-dissipating metal sheet 6 is second heat-dissipating aluminium plate.Second heat-dissipating metal sheet 6 is set to the temperature rise that second heat-dissipating aluminium plate not only can reduce stator, can also guarantee the lighter weight of main pole coil, and convenient processing and manufacture is simple.Certainly, first heat-dissipating metal sheet 4 can also adopt other metallic plates except adopting aluminium sheet.
Further in the scheme, as shown in Figure 8, this figure is the structural representation of the heat-dissipating metal sheet among Fig. 4; Above-mentioned first heat-dissipating aluminium plate and the welding of second heat-dissipating aluminium plate.Like this; First heat-dissipating aluminium plate and second heat-dissipating aluminium plate are connected as one; Make that the heat-radiation loop of main pole coil is smooth more, further accelerate radiating rate, in addition; This structure makes the shrink belt of colligation play the effect of fixing first heat-dissipating aluminium plate and second heat-dissipating aluminium plate simultaneously, makes simple in structure, the processing and manufacturing process convenient of main pole coil.Certainly, the connected mode of above-mentioned first heat-dissipating aluminium plate and second heat-dissipating aluminium plate is not limited in welding, can also adopt other modes to connect.
In another kind of embodiment, above-mentioned second heat-dissipating aluminium plate can be superior to the aluminium sheet of first heat-dissipating aluminium plate for heat conductivility.For example; Above-mentioned first heat-dissipating aluminium plate can adopt the 3A21 aluminium sheet; Second heat-dissipating aluminium plate can be 1060 aluminium sheets, and owing to the heat energy of the inner heat energy that produces of main pole coil greater than the outside of main pole coil, therefore second heat-dissipating aluminium plate adopts the better aluminium sheet of thermal conductivity can derive heat energy sooner, more; This structure had both strengthened the thermal diffusivity of above-mentioned main pole coil, had reduced the production cost of main pole coil again.Certainly, above-mentioned first heat-dissipating aluminium plate and second heat-dissipating aluminium plate can also adopt the aluminium sheet of other models.
In addition, the present invention also provides a kind of direct current machine, comprises stator and rotor, and stator adopts main pole coil as above.
Because above-mentioned main pole coil has above-mentioned technique effect, therefore, comprises that the direct current machine of this main pole coil also should have identical technique effect, repeats no more at this.
More than a kind of main pole coil provided by the present invention and the direct current machine of using this coil have been carried out detailed introduction.Used concrete example among this paper principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection range of claim of the present invention.
Claims (10)
1. main pole coil that is used for direct current machine; Comprise the ground floor coil (1) and the second layer coil (2) of fitting and being provided with; The housing size of ground floor coil (1) is greater than the housing size of second layer coil (2), and it is leg-of-mutton annulus (3) that the ladder place of the periphery wall of the periphery wall of said ground floor coil (1) and said second layer coil (2) forms cross section; It is characterized in that, be provided with first heat-dissipating metal sheet (4) in the said annulus (3).
2. the main pole coil that is used for direct current machine according to claim 1 is characterized in that, said first heat-dissipating metal sheet (4) is first heat-dissipating aluminium plate.
3. the main pole coil that is used for direct current machine according to claim 2; It is characterized in that; Be equipped with above-mentioned first heat-dissipating aluminium plate in two linearity sectors that are oppositely arranged of said annulus (3), it is said leg-of-mutton tubular structure that said first heat-dissipating aluminium plate bending is cross section.
4. the main pole coil that is used for direct current machine according to claim 2 is characterized in that, also comprises bandage (5), and the outside of said first heat-dissipating aluminium plate, said ground floor coil (1) and said second layer coil (2) is fixed in said bandage (5) colligation.
5. the main pole coil that is used for direct current machine according to claim 4 is characterized in that, said bandage (5) is specially shrink belt.
6. according to each described main pole coil that is used for direct current machine of claim 1-5, it is characterized in that, be provided with second heat-dissipating metal sheet (6) in the gap between said ground floor coil (1) and the said second layer coil (2).
7. the main pole coil that is used for direct current machine according to claim 6 is characterized in that, said second heat-dissipating metal sheet (6) is second heat-dissipating aluminium plate.
8. the main pole coil that is used for direct current machine according to claim 7 is characterized in that, said first heat-dissipating aluminium plate and the welding of said second heat-dissipating aluminium plate.
9. the main pole coil that is used for direct current machine according to claim 8 is characterized in that, said second heat-dissipating aluminium plate is the aluminium sheet that heat conductivility is superior to said first heat-dissipating aluminium plate.
10. a direct current machine comprises stator and rotor; It is characterized in that said stator adopts like each described main pole coil of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110455823XA CN102420485A (en) | 2011-12-30 | 2011-12-30 | Main pole coil and direct current motor with main pole coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110455823XA CN102420485A (en) | 2011-12-30 | 2011-12-30 | Main pole coil and direct current motor with main pole coil |
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| Publication Number | Publication Date |
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| CN102420485A true CN102420485A (en) | 2012-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110455823XA Pending CN102420485A (en) | 2011-12-30 | 2011-12-30 | Main pole coil and direct current motor with main pole coil |
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| CN (1) | CN102420485A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2609265Y (en) * | 2003-02-26 | 2004-03-31 | 永济电机厂 | DC dynamic with main electrode coil improved structure |
| CN101651376A (en) * | 2009-03-12 | 2010-02-17 | 株洲南车电机股份有限公司 | Electric machine stator winding heat dissipation method and device |
| CN202384873U (en) * | 2011-12-30 | 2012-08-15 | 南车株洲电机有限公司 | Mainpole coil and direct current motor comprising same |
-
2011
- 2011-12-30 CN CN201110455823XA patent/CN102420485A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2609265Y (en) * | 2003-02-26 | 2004-03-31 | 永济电机厂 | DC dynamic with main electrode coil improved structure |
| CN101651376A (en) * | 2009-03-12 | 2010-02-17 | 株洲南车电机股份有限公司 | Electric machine stator winding heat dissipation method and device |
| CN202384873U (en) * | 2011-12-30 | 2012-08-15 | 南车株洲电机有限公司 | Mainpole coil and direct current motor comprising same |
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Application publication date: 20120418 |