CN203312971U - Permanent magnet external-rotor generator and rotor housing thereof - Google Patents
Permanent magnet external-rotor generator and rotor housing thereof Download PDFInfo
- Publication number
- CN203312971U CN203312971U CN2013202566772U CN201320256677U CN203312971U CN 203312971 U CN203312971 U CN 203312971U CN 2013202566772 U CN2013202566772 U CN 2013202566772U CN 201320256677 U CN201320256677 U CN 201320256677U CN 203312971 U CN203312971 U CN 203312971U
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- rotor case
- rotor housing
- generator
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Abstract
The utility model relates to a permanent magnet external-rotor generator and a rotor housing thereof. The permanent magnet external-rotor generator comprises a rotor assembly. The rotor assembly comprises the rotor housing with one open end. The rotor housing comprises an upper end part and a cylindrical part connected with the upper end part. A hollow cylinder is arranged on the inner face of the upper end part along the central axis towards the open part. An accommodating chamber is formed among the upper end part, the cylindrical part and the hollow cylinder. The outer surface of the upper end part is provided with a plurality of arc-shaped projections in an outward way. The arc-shaped curved surface bottom of each arc-shaped projection is integrally connected with the upper end part. The protruding part of each arc-shaped projection and the upper end part form an opening shaped like a half arc. The opening is communicated with the accommodating chamber. The rotor housing which maintains the effects of the rotor housing in the prior art further has a fan blade cooling function. The ventilation design on the rotor housing is reasonable. Meanwhile, the rotor housing has a small axial size. The permanent magnet external-rotor generator provided with the rotor housing has the advantages of excellent ventilation effects, low noise, relatively low temperature rise, decrease in the number of components, production and assembly cost decrease and production efficiency increase.
Description
[
Technical field]
The utility model includes the synchronous generator of permanent magnet, particularly relates to permanent-magnetic outer rotor generator used on small diesel engine, relates in particular to for the rotor case that the cooling fan blade function is arranged on the permanent-magnetic outer rotor generator.
[
Background technology]
On the prior art small diesel engine, generator used comprises the permanent-magnetic outer rotor generator, the cooling fan blade of this generator generally is fixed on rotor assembly, the synchronous rotation with the rotation of rotor assembly, the cooling fan blade of prior art is because design is unreasonable, its axial dimension is larger, ventilation effect is bad, and noise is also large.
Prior art discloses the utility model patent that a kind of name is called " small-power permanent-magnetic outer rotor generator and cooling fan blade thereof "; its patent No. is 201120511775.7; the applying date is: on December 9th, 2011; the cooling fan blade of this utility model patent is a sheet metal; after punch forming, comprise fan blade body and unidirectional many places arch projection; The arched surface bottom of arch projection connects with fan blade body one, and the position that its projection is come and fan blade body form the opening of half arc, the oral area seemingly opened; Cooling fan blade is fixed on the upper surface of rotor case, and its arch projection outwardly; The upper surface of rotor case is provided with axially extending bore corresponding with the arch raised position of cooling fan blade, equivalent amount, each axially extending bore is connected with the arch projection of corresponding cooling fan blade; The cooling fan blade Design of ventilation of this utility model is reasonable, and axial dimension is shorter, fills the permanent-magnetic outer rotor generator with this cooling fan blade, and in running, ventilation effect is good, and noise is little, and temperature rise is also lower; But this utility model has following weak point:
One, cooling fan blade and rotor case are two independent parts, and cooling fan blade need to be fixed on rotor case by screw, make like this production and assembly cost all can increase;
Two, after cooling fan blade and rotor case assembling, amount of unbalance increases, and the aequum that needs to increase after assembling detects and proofreaies and correct, and production efficiency is reduced;
Three, cooling fan blade and rotor case are screwed, and have loosening hidden danger;
Four, rotor case adopts welding or the processing of whole bar, and its processing capacity is large; Especially bar rapidoprint utilance is low, and efficiency is lower; During welding, quality is had relatively high expectations again, and cost also can correspondingly increase.
[
The utility model content]
The technical problems to be solved in the utility model is to avoid above-mentioned the deficiencies in the prior art part and a kind of permanent-magnetic outer rotor generator and rotor case thereof is provided, this rotor case not only has the effect of prior art rotor case, but also has the function of cooling fan blade, Design of ventilation on this rotor case is reasonable, axial dimension is short, fill the permanent-magnetic outer rotor generator with this rotor case, in running, not only ventilation effect is good, noise is little and temperature rise is lower, and reduced the quantity of parts, reduce the cost of producing and assembling, improved production efficiency.
The technical scheme that the utility model solve the technical problem employing is:
A kind of permanent-magnetic outer rotor generator is provided, for small diesel engine, comprises rotor assembly, described rotor assembly comprises again the rotor case of an end opening; Described rotor case comprises the joining cylindrical portion in He Yugai upper end, upper end; described upper end inner face is provided with hollow cylinder along central axis toward opening, forms cavity volume between the inner cylinder face of described upper end inner face, cylindrical portion and the external cylindrical surface of hollow cylinder; On described rotor case, the outer surface of end outwards is provided with many places arch projection; The arched surface bottom of described arch projection connects with described upper end one, and the position that its projection is come and described upper end form the opening of half arc, and described opening is connected with the cavity volume of described rotor case.Each arch projection and corresponding opening thereof have the function of cooling fan blade, play a part heat radiation and the ventilation of cooling fan blade.Therefore the utility model is actually the cooling fan blade of prior art and rotor case has been made to integrative-structure, this rotor case can adopt the integral type hot investment casting, can enhance productivity, simultaneously also can improve the accuracy of manufacture of product, during the essence casting, can adopt the trade mark is the carbon structural steel of Q235, the magnetic conductivity of this Q235 carbon structural steel is better than the high-quality steel, material cost is also lower, after the rotor case moulding, processing capacity is few, and due to the essence casting mode that adopts HTHP, the even density of rotor case, amount of unbalance is very little, therefore add the man-hour production cost extremely low, highly efficient in productivity.
Be distributed on the outer surface of end on described rotor case a plurality of described arch projection uniform arrays.
The upper end of described rotor case also is provided with at least two tapped through holes.
The upper end inner face of described rotor case also is provided with many convex tendons.
Also provide a kind of for the rotor case on the permanent-magnetic outer rotor generator, comprise the joining cylindrical portion in He Yugai upper end, upper end, described upper end inner face is provided with hollow cylinder along central axis toward opening, forms cavity volume between the inner cylinder face of described upper end inner face, cylindrical portion and the external cylindrical surface of hollow cylinder; The outer surface of described upper end outwards is provided with many places arch projection; The arched surface bottom of described arch projection connects with described upper end one, and the position that its projection is come and described upper end form the opening of half arc, and described opening is connected with described cavity volume.
Compared with the existing technology, the beneficial effect of the utility model permanent-magnetic outer rotor generator and rotor case thereof is:
One, directly the cooling fan blade of prior art and rotor case are made to a part, can reduce like this by a part, nor need to be screwed, make like this material, production and assembly cost all can decrease;
Two, rotor case can adopt the integral type hot investment casting, can enhance productivity, and also can improve the accuracy of manufacture of product simultaneously, when casting, essence can adopt the essence casting mode of HTHP, the even density of rotor case, and amount of unbalance is very little, therefore add the man-hour production cost extremely low, highly efficient in productivity; And also can to adopt the trade mark be the carbon structural steel of Q235 when casting essence, the magnetic conductivity of this Q235 carbon structural steel is better than the high-quality steel, and material cost is also lower;
Three, there is no cooling fan blade, to I haven't seen you for ages, reduced the gauge of prior art cooling fan blade with the axial dimension of the whole motor of equal-specification, made the axial dimension of whole motor shorter;
Four, straight forming many places arch projection on the outer surface of end on rotor case, the position that its projection is come and upper end form the opening of half arc, and opening is connected with the cavity volume of rotor case again, and the rotor case Design of ventilation of this structure is reasonable; And fill the permanent-magnetic outer rotor generator with this rotor case, and in running, ventilation effect is good, and noise is little, and temperature rise is also lower.
In sum, the utility model rotor case not only has the effect of prior art rotor case, but also have the function of cooling fan blade, and the Design of ventilation on this rotor case is reasonable, and axial dimension is short, fill the permanent-magnetic outer rotor generator with this rotor case, in running, not only ventilation effect is good, noise is little and temperature rise is lower, and has reduced the quantity of parts, reduce the cost of producing and assembling, improved production efficiency.
[
The accompanying drawing explanation]
Fig. 1 is the axonometric projection schematic diagram of the utility model permanent-magnetic outer rotor generator face shaping, and generator described in figure has been loaded onto fan housing 500;
Fig. 2 is still the axonometric projection schematic diagram of described generator face shaping, but has removed fan housing 500;
Fig. 3 is the main schematic diagram of looking of the orthographic projection of described generator, in figure, does not draw outgoing line components 800;
Fig. 4 is the axonometric projection schematic diagram of the rotor case 110 of described generator;
Fig. 5 is the axonometric projection schematic diagram of the other direction of described rotor case 110;
Fig. 6 is that schematic diagram is looked on the orthographic projection left side of described rotor case 110;
Fig. 7 is the A-A generalized section of rotor case 110 shown in Figure 6.
[embodiment]
Below in conjunction with each accompanying drawing, the utility model is described in further detail.
Referring to Fig. 1 to Fig. 7, a kind of permanent-magnetic outer rotor generator, for small diesel engine, comprise rotor assembly (not marking in figure), and described rotor assembly comprises again the rotor case 110 of an end opening; Described rotor case 110 comprise upper end 111 and with the joining cylindrical portion 112 in this upper end 111; described upper end 111 inner faces are provided with hollow cylinder 113 along central axis toward opening, between the inner cylinder face of described upper end 111 inner faces, cylindrical portion 112 and the external cylindrical surface of hollow cylinder 113, form cavity volume 114; On described rotor case 110, the outer surface of end 111 outwards is provided with many places arch projection 1111; The arched surface bottom 1112 of described arch projection 1111 connects with described upper end 111 one, and the position that its projection is come and described upper end 111 form the opening 1113 of half arc, and described opening 1113 is connected with the cavity volume 114 of described rotor case 110.Each arch projection 1111 and corresponding opening 1113 thereof have the function of cooling fan blade, play a part heat radiation and the ventilation of cooling fan blade.Therefore the utility model is actually the cooling fan blade of prior art and rotor case has been made to integrative-structure, this rotor case can adopt the integral type hot investment casting, can enhance productivity, simultaneously also can improve the accuracy of manufacture of product, during the essence casting, can adopt the trade mark is the carbon structural steel of Q235, the magnetic conductivity of this Q235 carbon structural steel is better than the high-quality steel, material cost is also lower, after the rotor case moulding, processing capacity is few, and due to the essence casting mode that adopts HTHP, the even density of rotor case, amount of unbalance is very little, therefore add the man-hour production cost extremely low, highly efficient in productivity.
Referring to Fig. 4 to Fig. 6, be distributed on the outer surface of end 111 on described rotor case 110 a plurality of described arch projection 1111 uniform arrays.From Fig. 4 to Fig. 6, can find out, a plurality of described arches projection 1111 uniform arrays ground is distributed on the outer surface of end 111 on described rotor case 110, but also the outward flange of close upper end 111 basically.
Referring to Fig. 4 to Fig. 7, the upper end 111 of described rotor case 110 also is provided with at least two tapped through holes 1114.From Fig. 4 to Fig. 6, can find out have three tapped through holes 1114 to be evenly distributed on the upper end 111 of described rotor case 110.
Referring to Fig. 5, upper end 111 inner faces of described rotor case 110 also are provided with many convex tendons 1115.As can be seen from Figure 5, the quantity of the quantity of convex tendon 1115 and arch projection 1111 is equal, just is provided with a convex tendon 1115 between every two arches projection 1111 corresponding openings 1113 and place that the cavity volume 114 of rotor case 110 is connected.
Referring to Fig. 1 to Fig. 3, label be 200 be stator module, label be 300 be ring flange, label be 500 be fan housing, label be 800 be outgoing line components, they are prior aries, their position and assembly relation can be 201120511775.7 referring to the patent No., name is called the utility model patent of " small-power permanent-magnetic outer rotor generator and cooling fan blade thereof ", does not repeat them here.
The above embodiment has only expressed preferred implementation of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims; It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model; Therefore, all equivalents and modifications of doing with the utility model claim scope, all should belong to the covering scope of the utility model claim.
Claims (8)
1. a permanent-magnetic outer rotor generator, comprise rotor assembly, and described rotor assembly comprises again the rotor case (110) of an end opening; Described rotor case (110) comprise upper end (111) and with the joining cylindrical portion in this upper end (111) (112); described upper end (111) inner face is provided with hollow cylinder (113) along central axis toward opening, forms cavity volume (114) between the inner cylinder face of described upper end (111) inner face, cylindrical portion (112) and the external cylindrical surface of hollow cylinder (113); It is characterized in that:
On described rotor case (110), the outer surface of end (111) outwards is provided with many places arch projections (1111); The arched surface bottom (1112) of described arch projection (1111) connects with described upper end (111) one, the position that its projection is come and described upper end (111) form the opening (1113) of half arc, and described opening (1113) is connected with the cavity volume (114) of described rotor case (110).
2. permanent-magnetic outer rotor generator according to claim 1 is characterized in that:
Be distributed on the outer surface of end (111) on described rotor case (110) a plurality of described arch projection (1111) uniform arrays.
3. permanent-magnetic outer rotor generator according to claim 1 is characterized in that:
The upper end (111) of described rotor case (110) also is provided with at least two tapped through holes (1114).
4. according to the described permanent-magnetic outer rotor generator of any one of claims 1 to 3, it is characterized in that:
Upper end (111) inner face of described rotor case (110) also is provided with many convex tendons (1115).
5. one kind for the rotor case on the permanent-magnetic outer rotor generator (110); comprise upper end (111) and with the joining cylindrical portion in this upper end (111) (112); described upper end (111) inner face is provided with hollow cylinder (113) along central axis toward opening, forms cavity volume (114) between the inner cylinder face of described upper end (111) inner face, cylindrical portion (112) and the external cylindrical surface of hollow cylinder (113); It is characterized in that:
The outer surface of described upper end (111) outwards is provided with many places arch projections (1111); The arched surface bottom (1112) of described arch projection (1111) connects with described upper end (111) one, the position that its projection is come and described upper end (111) form the opening (1113) of half arc, and described opening (1113) is connected with described cavity volume (114).
6. rotor case according to claim 5 (110) is characterized in that:
Be distributed on the outer surface of described upper end (111) a plurality of described arch projection (1111) uniform arrays.
7. rotor case according to claim 5 (110) is characterized in that:
Described upper end (111) also is provided with at least two tapped through holes (1114).
8. according to the described rotor case of any one of claim 5 to 7 (110), it is characterized in that:
Described upper end (111) inner face also is provided with many convex tendons (1115).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202566772U CN203312971U (en) | 2013-05-13 | 2013-05-13 | Permanent magnet external-rotor generator and rotor housing thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202566772U CN203312971U (en) | 2013-05-13 | 2013-05-13 | Permanent magnet external-rotor generator and rotor housing thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203312971U true CN203312971U (en) | 2013-11-27 |
Family
ID=49619144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202566772U Expired - Lifetime CN203312971U (en) | 2013-05-13 | 2013-05-13 | Permanent magnet external-rotor generator and rotor housing thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203312971U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846600A (en) * | 2016-05-04 | 2016-08-10 | 东莞市银燕电气科技有限公司 | Motor and model aircraft having motor |
| CN110649736A (en) * | 2019-09-27 | 2020-01-03 | 珠海格力电器股份有限公司 | Rotor shell structure, rotor and washing machine with rotor |
| CN110957833A (en) * | 2019-11-12 | 2020-04-03 | 程桂香 | Rotor of motor and motor |
-
2013
- 2013-05-13 CN CN2013202566772U patent/CN203312971U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846600A (en) * | 2016-05-04 | 2016-08-10 | 东莞市银燕电气科技有限公司 | Motor and model aircraft having motor |
| CN110649736A (en) * | 2019-09-27 | 2020-01-03 | 珠海格力电器股份有限公司 | Rotor shell structure, rotor and washing machine with rotor |
| CN110957833A (en) * | 2019-11-12 | 2020-04-03 | 程桂香 | Rotor of motor and motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131127 |
|
| CX01 | Expiry of patent term |