CN203617866U - External rotor single-phase electric machine - Google Patents
External rotor single-phase electric machine Download PDFInfo
- Publication number
- CN203617866U CN203617866U CN201320855366.8U CN201320855366U CN203617866U CN 203617866 U CN203617866 U CN 203617866U CN 201320855366 U CN201320855366 U CN 201320855366U CN 203617866 U CN203617866 U CN 203617866U
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- CN
- China
- Prior art keywords
- stator
- winding
- stator core
- rotor
- external rotor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004804 winding Methods 0.000 claims abstract description 53
- 238000009413 insulation Methods 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model relates to the field of electric machines and especially relates to an external rotor single-phase electric machine. The external rotor single-phase electric machine comprises a stator, a rotor, a rotating shaft and a housing fixed outside the rotor, wherein the rotor sleeves outside the stator; a bearing is disposed on a shaft neck, arranged in the through hole of the stator, of the rotating shaft; one end of, away from the stator, of the rotating shaft is fixedly connected with the housing; the stator comprises a stator core and a stator winding; the stator core is a complete ring formed through end-to-end connection by circular arc units of the same curvature; the outside rims of the stator core are provided with stator slots; a yoke part is formed by the bottoms of the stator slots and the inner hole wall of the stator core; the stator winding comprises a main winding and a secondary winding; the main winding and the secondary winding are arranged according to the winding of a single-phase electric machine and are wound on the yoke part of the stator core; the quantity of the windings which can be received inside the stator slots is larger than that of the windings of a received inserted line structure; coils wound on the yoke part of the stator core are compact; the space occupancy rate of the stator slots is notably raised; and the size of the stator and thus the size of the electric machine are reduced.
Description
Technical field
The utility model relates to machine field, particularly external rotor monophase machine.
Background technology
The stator winding of existing external rotor monophase machine is first enamelled wire to be coiled into a branch of elliptoid coil, then coil is embedded in stator slot.The two rectangular limits that form a wire loop are positioned at different stator slots, that is to say that a wire loop needs two stator slots to store, and coil can not fully be full of stator slot, only in stator slot, leave enough spaces and can carry out rule, relatively loose between coil turn so, cause the space availability ratio of groove low, the size of stator slot is large, finally causes motor volume to increase.Also have a large amount of coils to overhang on two axial ends of stator core, cause raw-material waste, production cost is high.Further, be mostly to adopt manual wire embedding at present, very high to the requirement of workman's level, workload is large, and production efficiency is relatively low.
Summary of the invention
The space availability ratio that the purpose of this utility model is to provide a kind of stator core slot is high, the external rotor monophase machine that production efficiency is high.Provide a kind of space utilization of stator core slot high, the external rotor monophase machine that production efficiency is high.
For achieving the above object, the utility model has adopted following technical scheme: a kind of external rotor monophase machine, comprise stator and rotor, rotating shaft and be fixed on the casing of rotor exterior, rotor is enclosed within the outside of stator, the middle part of stator is provided with the through hole passing through for rotating shaft, rotating shaft is placed on the axle journal in stator through hole and is provided with bearing, rotating shaft is away from the affixed casing in one end of stator, described stator comprises stator core and stator winding, described stator core is by the identical circular arc elementary section complete circle that head and the tail connect and compose each other of curvature, in the outer periphery of stator core, offer stator slot, the bottom land of stator slot to stator core inner hole wall forms yoke portion, stator winding comprises main winding and auxiliary winding, described main winding and auxiliary winding press monophase machine winding arrange and winding in the yoke portion of stator core.
Owing to adopting above technical scheme, a wire loop of stator winding only has a limit to be positioned at stator slot, another side is at the inner hole wall place of stator core, also just say that a wire loop only needs a stator slot to store, winding with machine directly in stator yoke portion, between wire turn, arrange tightr, the number of turn that the turn ratio that can hold winding in onesize stator slot is held rule structure winding is many, obviously being promoted of the space availability ratio of stator slot, reduce stator volume, namely reduced motor volume.And the stator of this structure saves manual wire embedding's operation, reduce the amount of labour, operating efficiency is significantly improved.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the front view of stator;
Fig. 3 is the cutaway view of stator;
Fig. 4 is the structural representation of circular arc elementary section;
Fig. 5 is the structural representation of circular arc elementary section fit on insulation retaining frame.
Embodiment
As Figure 1-3, a kind of external rotor monophase machine, comprise stator 10 and rotor 20, rotating shaft 30 and the casing 40 that is fixed on rotor exterior, rotor 20 is enclosed within the outside of stator 10, the middle part of stator 10 is provided with the through hole passing through for rotating shaft 30, rotating shaft 30 is placed on the axle journal in stator 10 through holes and is provided with bearing 31, rotating shaft 30 is away from the affixed casing 40 in one end of stator 10, described stator 10 comprises stator core 11 and stator winding 12, described stator core 11 is by the identical circular arc elementary section 11A complete circle that head and the tail connect and compose each other of curvature, in the outer periphery of stator core 11, offer stator slot 112, the bottom land of stator slot 112 to stator core 11 inner hole walls form yoke portion 111, stator winding 12 comprises main winding 121 and auxiliary winding 122, described main winding 121 and auxiliary winding 122 press monophase machine winding arrange and winding in the yoke portion 111 of stator core 11.Relative position Rankine-Hugoniot relations between main winding 121 and auxiliary winding 122 is undertaken by single-phase electric machine stator winding arrangement regulation, mode.Give an example, by adjacent two stator slots 112 as one group, that is to say that adjacent two stator slots 112 are interior arranges main winding 121 simultaneously or auxiliary winding 122 is set simultaneously, main winding 121 and auxiliary winding 122 intervals are arranged, the position relationship of main winding 121 and auxiliary winding 122 and stator core 11 is that equal winding is in the yoke portion 111 of stator core 11, as shown in Figure 2.
As Fig. 2-5, described stator core 11 is along the circumferential direction spliced successively by two or more circular arc elementary section 11A, between circular arc elementary section 11A, is provided with fastening unit.The stator core 11 of split-type structural is more prone to realize machine coiling.The yoke portion 111 of stator core 11 refers to the position between bottom land and stator core 11 inner hole walls of stator slot 112, and enamelled wire outwards forms stator winding 12 successively from stator slot 112 inside in yoke portion 111.A wire loop of stator winding 12 only has a limit to be positioned at stator slot 112, another side abuts on the inner hole wall of stator core 11, also just say that a wire loop only needs a stator slot 112 to store, also quantity or the space of the stator slot of half have just been saved comparatively speaking, and comparatively compact around the coil of stator core yoke portion 111, arriving obviously of the space hold rate of stator slot promotes.Guaranteeing, under the prerequisite that power of motor is constant, can to reduce the degree of depth of stator slot 112, namely reduce stator diameter, thereby reach the object that reduces motor volume, and the stator of this structure saves manual wire embedding's operation, reduce the amount of labour, operating efficiency is significantly improved.And a wire loop is in same stator slot 112, the enamelled wire that avoids waste, saves raw material, reduces production costs.
Described stator core 11 is spliced by the circular arc elementary section 11A of two semi-circular structure, one end that circular arc elementary section 11A along the circumferential direction goes up is provided with raised line 113, the other end is provided with the groove 114 identical with raised line 113, described raised line 113 is placed in the groove 114 of adjacent circular arc elementary section 11A, and raised line 113 and the groove 114 of engaging form fastening unit mutually.Two end faces of circular arc elementary section 11A all extend clamping part 115 towards its annular center of circle, and the effect of this clamping part 115 is for gripping circular arc elementary section 11A in the time that machine winds the line.The stator core 11 of two halves formula also guarantees the intensity of iron core when being convenient to coiling, two circular arc elementary section 11A are buckled into a completely circular structure, and the time processing moulding in punching lamination of raised line 113 and groove 114, without secondary operations.
Described stator core 11 outer wrap have insulation retaining frame 13, round-corner transition between the axial end of described insulation retaining frame 13 and periphery.Stator core 11 is to be formed by stacking by some punchings, and in yoke portion 111, sheathed insulation retaining frame 13, can avoid damaging enamelled wire, guarantees product quality, and the retaining frame 13 in the utility model can be adopted protective sleeve made of plastic.
Described casing is step tubular type, and its Large Diameter Pipeline portion fixed cover is located on external rotor, and pipe with small pipe diameter portion is sheathed to be fixed on the axle body that rotating shaft is positioned at stator outside.
Described stator core 11 and stator winding 12 outsides are injected with insulation crust 14.
Described rotor 20 is cage rotor.
The stator core 11 of the good winding 12 of coiling is put into plastic packaging machine and carry out plastic packaging, become an integrally-built stator 10, can effectively prevent from misplacing between circular arc elementary section 11A, separate etc.
Claims (6)
1. an external rotor monophase machine, comprise stator (10) and rotor (20), rotating shaft (30) and be fixed on the casing (40) of rotor exterior, it is characterized in that: rotor (20) is enclosed within the outside of stator (10), the middle part of stator (10) is provided with the through hole passing through for rotating shaft (30), rotating shaft (30) is placed on the axle journal in stator (10) through hole and is provided with bearing (31), rotating shaft (30) is away from the affixed casing in one end (40) of stator (10), described stator (10) comprises stator core (11) and stator winding (12), described stator core (11) is by identical circular arc elementary section (11A) complete circle that head and the tail connect and compose each other of curvature, in the outer periphery of stator core (11), offer stator slot (112), the bottom land of stator slot (112) to stator core (11) inner hole wall forms yoke portion (111), stator winding (12) comprises main winding (121) and auxiliary winding (122), described main winding (121) and auxiliary winding (122) press monophase machine winding arrange and winding in the yoke portion (111) of stator core (11).
2. external rotor monophase machine according to claim 1, it is characterized in that: described stator core (11) is spliced by the circular arc elementary section (11A) of two semi-circular structure, one end that circular arc elementary section (11A) is along the circumferential direction gone up is provided with raised line (113), the other end is provided with the groove (114) identical with raised line (113), and described raised line (113) is placed in the groove (114) of adjacent circular arc elementary section (11A).
3. external rotor monophase machine according to claim 1, is characterized in that: described stator core (11) outer wrap has insulation retaining frame (13), round-corner transition between the axial end of described insulation retaining frame (13) and periphery.
4. external rotor monophase machine according to claim 1, it is characterized in that: described casing (40) is step tubular type, it is upper that its Large Diameter Pipeline portion fixed cover is located at external rotor (20), and pipe with small pipe diameter portion is sheathed to be fixed on rotating shaft (30) and to be positioned on the outside axle body of stator (10).
5. according to the external rotor monophase machine described in claim 2 or 3, it is characterized in that: described stator core (11) and stator winding (12) outside are injected with insulation crust (14).
6. external rotor monophase machine according to claim 1, is characterized in that: described rotor (20) is cage rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320855366.8U CN203617866U (en) | 2013-12-20 | 2013-12-20 | External rotor single-phase electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320855366.8U CN203617866U (en) | 2013-12-20 | 2013-12-20 | External rotor single-phase electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203617866U true CN203617866U (en) | 2014-05-28 |
Family
ID=50770486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320855366.8U Expired - Lifetime CN203617866U (en) | 2013-12-20 | 2013-12-20 | External rotor single-phase electric machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203617866U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730995A (en) * | 2013-12-20 | 2014-04-16 | 合肥凯邦电机有限公司 | External rotor single-phase motor |
| US11626769B2 (en) | 2017-04-21 | 2023-04-11 | Lenze Drives Gmbh | External rotor motor with cast stator |
-
2013
- 2013-12-20 CN CN201320855366.8U patent/CN203617866U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730995A (en) * | 2013-12-20 | 2014-04-16 | 合肥凯邦电机有限公司 | External rotor single-phase motor |
| US11626769B2 (en) | 2017-04-21 | 2023-04-11 | Lenze Drives Gmbh | External rotor motor with cast stator |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140528 |