CN112564357A - Outer rotor single-phase motor - Google Patents
Outer rotor single-phase motor Download PDFInfo
- Publication number
- CN112564357A CN112564357A CN202011211799.0A CN202011211799A CN112564357A CN 112564357 A CN112564357 A CN 112564357A CN 202011211799 A CN202011211799 A CN 202011211799A CN 112564357 A CN112564357 A CN 112564357A
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- China
- Prior art keywords
- rotor
- wall
- assembly
- stator
- phase motor
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- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses an outer rotor single-phase motor, which comprises a stator component and a rotor component positioned outside the stator component, wherein the rotor component comprises: stator module comprises stator core and stator winding, the rotor subassembly includes a rotor sleeve, rotor sleeve's inner wall encloses into one and holds the chamber, and the inner wall circumference that holds the chamber is provided with a plurality of magnetic steel sheet, rotor sleeve's inside just is located and is equipped with the louvre between the adjacent magnetic steel sheet, the last one side inner wall that just is located the louvre of rotor sleeve is provided with along the flexible seal assembly of rotor subassembly direction of rotation. According to the external rotor single-phase motor, the sealing assembly with the telescopic structure is adopted, so that the heat dissipation holes can be closed when the rotor assembly rotates, the magnetic leakage phenomenon of the motor is prevented, meanwhile, the heat dissipation holes are opened when the rotor assembly does not rotate, and an efficient heat dissipation effect is achieved on working heat in the motor, so that the stable heat dissipation effect of the external rotor motor is ensured, and the magnetic leakage phenomenon of the motor is avoided.
Description
Technical Field
The invention relates to the technical field of outer rotor motors, in particular to an outer rotor single-phase motor.
Background
The motor is divided into external rotor motor and internal rotor motor according to the relative position of rotor and stator usually, and wherein external rotor motor has space-saving relatively, the compact characteristics of design, and more receive extensive concern, and external rotor motor has space-saving, the compact and pleasing to the eye characteristics of design, is fit for installing in the impeller, in the motor working process, can produce a large amount of heats, and the heat mainly comes from: heat generated on the contact surface by the motion friction between the machines; heat generated when the alternating current is conducted in the wire due to resistance of the wire and obstruction of the induced current; the alternating current generates heat due to eddy current loss in the stator core and the rotor yoke, and in order to ensure the normal operation of the outer rotor motor, the necessary heat dissipation treatment is usually performed on the motor.
Current motor body radiating mode generally adopts forced draft cooling and liquid cooling mode, forced draft cooling relies on external equipment to cool off the motor, this kind of cooling mode needs increase extra fan outside the motor system, and need provide power source for the fan, system complexity and running cost have been improved, liquid cooling mode need give the special coolant liquid passageway of motor design, and need pressurize and dispel the heat for the coolant liquid, the cooling effect is good, but system complexity and weight have been improved greatly, also take place the magnetic leakage easily, the operation security of motor has been reduced.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides an outer rotor single-phase motor which adopts a sealing component which can stretch and retract along with the rotation state of a rotor component and performs opening and closing treatment on heat dissipation holes.
In order to achieve the purpose, the invention adopts the following technical scheme: an outer rotor single phase motor comprising a stator assembly, and a rotor assembly located outside the stator assembly:
the stator assembly consists of a stator core and a stator winding, wherein the stator winding is wound on the stator core;
the rotor assembly comprises a rotor sleeve, the inner wall of the rotor sleeve is enclosed to form an accommodating cavity, a plurality of magnetic steel sheets are circumferentially arranged on the inner wall of the accommodating cavity, a through hole is formed in the end face of the rotor sleeve, and a rotating shaft penetrating through the inner wall of the bearing on the stator assembly is arranged on the inner wall of the through hole;
the rotor sleeve is provided with a plurality of heat dissipation holes, each heat dissipation hole is formed in the corresponding rotor sleeve and located between the adjacent magnetic steel sheets, and a sealing assembly stretching along the rotation direction of the rotor assembly is arranged on the inner wall of one side, located on each heat dissipation hole, of the corresponding rotor sleeve.
As a further description of the above technical solution:
the sealing assembly comprises a sliding groove formed in the rotor sleeve, a spring is arranged on the inner wall of the sliding groove, and a sealing plate is arranged at the free end of the spring.
As a further description of the above technical solution:
the inner wall of spout is provided with the ball, and the outer wall rolling contact of ball and shrouding.
As a further description of the above technical solution:
and a clamping groove is arranged on the rotor sleeve and positioned on the inner wall of the other side of the heat dissipation hole, and the clamping groove is clamped with the free end of the sealing plate.
As a further description of the above technical solution:
the inner wall of the through hole is provided with a sealing ring, and the sealing ring is positioned on the outer wall of the rotating shaft.
As a further description of the above technical solution:
a first insulating layer is axially arranged between the inner wall of the stator assembly and the outer wall of the rotating shaft.
As a further description of the above technical solution:
and a second insulating layer is radially arranged between the inner wall of the stator assembly and the outer wall of the rotating shaft.
As a further description of the above technical solution:
and a third insulating layer is arranged at the joint of the rotor assembly and the stator assembly.
The invention provides an outer rotor single-phase motor. The method has the following beneficial effects:
this external rotor single-phase motor adopts extending structure's seal assembly, makes it can be at the rotatory closed louvre of rotor subassembly, prevents that the phenomenon of motor emergence magnetic leakage, opens the louvre when the rotor subassembly irrotational simultaneously, plays efficient radiating effect to the work heat in the motor to ensured the stable radiating effect of external rotor motor, also avoided the motor to take place the phenomenon of magnetic leakage, improved external rotor motor's operating stability.
Drawings
Fig. 1 is a schematic structural diagram of an outer rotor single-phase motor according to the present invention;
FIG. 2 is a schematic cross-sectional view of a rotor sleeve according to the present invention;
FIG. 3 is a schematic view of a portion of the rotor sleeve and seal assembly junction of the present invention.
Illustration of the drawings:
1. a rotor assembly; 11. a rotor sleeve; 111. an accommodating chamber; 112. a through hole; 113. a seal ring; 114. a seal assembly; 1141. a spring; 1142. a chute; 1143. closing the plate; 1144. a ball bearing; 1145. a card slot; 115. heat dissipation holes; 12. a magnetic steel sheet; 2. a stator assembly; 21. a stator core; 22. a stator winding; 3. a rotating shaft; 4. a bearing; 5. a first insulating layer; 6. a second insulating layer; 7. and a third insulating layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
As shown in fig. 1 to 3, an outer rotor single phase motor includes a stator assembly 2, and a rotor assembly 1 located outside the stator assembly 2:
the stator assembly 2 consists of a stator core 21 and a stator winding 22, wherein the stator winding 22 is wound on the stator core 21;
the rotor assembly 1 comprises a rotor sleeve 11, an accommodating cavity 111 is defined by the inner wall of the rotor sleeve 11, a plurality of magnetic steel sheets 12 are circumferentially arranged on the inner wall of the accommodating cavity 111, a through hole 112 is formed in the end face of the rotor sleeve 11, and a rotating shaft 3 penetrating through the inner wall of a bearing 4 on the stator assembly 2 is arranged on the inner wall of the through hole 112;
In this embodiment, the rotor assembly 1 is located outside the stator assembly 2, so that the outer rotor is in power supply operation, the rotor assembly 1 can rotate outside the stator assembly 2, and utilize the circulation effect of the magnetic steel sheet 12 and the stator winding 22, drive the rotating shaft 3 to make it rotate at high speed in the bearing 4, when the rotor assembly 1 is rotated, the sealing assembly 114 can receive centrifugal force to make it move outwards at this moment, block up the heat dissipation holes 115, prevent the electrode from generating the phenomenon of magnetic leakage during operation, when the rotor assembly 1 is not rotated, the sealing assembly 114 is not moved at this moment, thereby utilize the heat dissipation holes 115 to play the radiating effect to the motor.
As shown in fig. 3, the sealing assembly 114 includes a sliding slot 1142 formed on the rotor sleeve 11, a spring 1141 is disposed on an inner wall of the sliding slot 1142, and a sealing plate 1143 is disposed at a free end of the spring 1141, when the rotor assembly 1 rotates, the sealing plate 1143 is subjected to a centrifugal force, the spring 1141 is stretched to be lengthened, and at the same time, the sealing plate 1143 is moved out of the sliding slot 1142 to seal the heat dissipation hole 115, otherwise, when the rotor assembly 1 stops rotating, the spring 1141 is restored to rebound, so that the sealing plate 1143 is moved into the sliding slot 1142 again to open the heat dissipation hole 115.
As shown in fig. 3, the inner wall of the sliding slot 1142 is provided with balls 1144, and the balls 1144 are in rolling contact with the outer wall of the sealing plate 1143, when the sealing plate 1143 moves, the outer wall of the sealing plate 1143 is in rolling contact with the balls 1144, so as to reduce the friction resistance of the sealing plate 1143 during the movement in the sliding slot 1142, and improve the flexibility of the telescopic movement process of the sealing plate 1143.
As shown in fig. 3, a slot 1145 is disposed on the rotor sleeve 11 and located on the inner wall of the other side of the heat dissipation hole 115, and the slot 1145 is connected to the free end of the sealing plate 1143 in a clamping manner, when the sealing plate 1143 is moved out of the sliding slot 1142, the free end of the sealing plate 1143 is embedded into the slot 1145 for fixing, so that the heat dissipation hole 115 can be completely blocked by the sealing plate 1143, the position stability of the sealing plate 1143 is improved, and the sealing plate 1143 is prevented from shaking randomly.
As shown in fig. 1, the inner wall of the through hole 112 is provided with a sealing ring 113, and the sealing ring 113 is located on the outer wall of the rotating shaft 3, the sealing ring 113 is of an annular structure made of rubber, and the middle end of the annular structure is concave, so that the concave structure of the sealing ring 113 contacts with the inner wall of the through hole 112, and the convex edges at the two ends contact with the outer walls of the openings at the two sides of the through hole 112 in a fitting manner, thereby sealing the rotor assembly 1 and the rotating shaft 3.
As shown in fig. 1, a first insulating layer 5 is axially arranged between the inner wall of the stator assembly 2 and the outer wall of the rotating shaft 3, a second insulating layer 6 is radially arranged between the inner wall of the stator assembly 2 and the outer wall of the rotating shaft 3, and a third insulating layer 7 is arranged at the joint of the rotor assembly 1 and the stator assembly 2, so that the first insulating layer 5, the second insulating layer 6 and the third insulating layer 7 can be combined to protect the gap at the joint of the rotor assembly 1 and the stator assembly 2, thereby achieving a comprehensive insulating protection effect and improving the insulating property of the outer rotor motor as much as possible.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides an outer rotor single phase motor, includes stator module (2) to and be located rotor subassembly (1) in the stator module (2) outside, its characterized in that:
the stator assembly (2) consists of a stator core (21) and a stator winding (22), wherein the stator winding (22) is wound on the stator core (21);
the rotor assembly (1) comprises a rotor sleeve (11), an accommodating cavity (111) is defined by the inner wall of the rotor sleeve (11), a plurality of magnetic steel sheets (12) are circumferentially arranged on the inner wall of the accommodating cavity (111), a through hole (112) is formed in the end face of the rotor sleeve (11), and a rotating shaft (3) penetrating through the inner wall of an upper bearing (4) of the stator assembly (2) is arranged on the inner wall of the through hole (112);
the rotor structure is characterized in that heat dissipation holes (115) are formed in the rotor sleeve (11) and located between the adjacent magnetic steel sheets (12), and a sealing assembly (114) which stretches and retracts along the rotation direction of the rotor assembly (1) is arranged on the inner wall of one side, located on the heat dissipation holes (115), of the rotor sleeve (11).
2. The external rotor single-phase motor of claim 1, wherein: the sealing assembly (114) comprises a sliding groove (1142) formed in the rotor sleeve (11), a spring (1141) is arranged on the inner wall of the sliding groove (1142), and a sealing plate (1143) is arranged at the free end of the spring (1141).
3. The external rotor single-phase motor of claim 2, wherein: the inner wall of the sliding groove (1142) is provided with a ball (1144), and the ball (1144) is in rolling contact with the outer wall of the sealing plate (1143).
4. The external rotor single-phase motor of claim 1, wherein: and a clamping groove (1145) is formed in the inner wall of the rotor sleeve (11) and located on the other side of the heat dissipation hole (115), and the clamping groove (1145) is clamped with the free end of the sealing plate (1143).
5. The external rotor single-phase motor of claim 1, wherein: the inner wall of the through hole (112) is provided with a sealing ring (113), and the sealing ring (113) is positioned on the outer wall of the rotating shaft (3).
6. The external rotor single-phase motor of claim 1, wherein: and a first insulating layer (5) is axially arranged between the inner wall of the stator assembly (2) and the outer wall of the rotating shaft (3).
7. The external rotor single-phase motor of claim 1, wherein: and a second insulating layer (6) is radially arranged between the inner wall of the stator assembly (2) and the outer wall of the rotating shaft (3).
8. The external rotor single-phase motor of claim 1, wherein: and a third insulating layer (7) is arranged at the joint of the rotor assembly (1) and the stator assembly (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011211799.0A CN112564357B (en) | 2020-11-03 | 2020-11-03 | Outer rotor single-phase motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011211799.0A CN112564357B (en) | 2020-11-03 | 2020-11-03 | Outer rotor single-phase motor |
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| Publication Number | Publication Date |
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| CN112564357A true CN112564357A (en) | 2021-03-26 |
| CN112564357B CN112564357B (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011211799.0A Active CN112564357B (en) | 2020-11-03 | 2020-11-03 | Outer rotor single-phase motor |
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| CN110829722A (en) * | 2020-01-13 | 2020-02-21 | 成都微精电机股份公司 | Low-loss cooling structure used inside motor |
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| CN211046598U (en) * | 2019-09-27 | 2020-07-17 | 广东天润自动化科技有限公司 | Servo motor |
| CN211456834U (en) * | 2020-01-14 | 2020-09-08 | 深圳市和利成五金制品有限公司 | Assembly of brushless motor rotor core |
| CN112636513A (en) * | 2020-12-09 | 2021-04-09 | 全南县超亚科技有限公司 | Novel motor |
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2020
- 2020-11-03 CN CN202011211799.0A patent/CN112564357B/en active Active
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| CN108933486A (en) * | 2017-05-23 | 2018-12-04 | 福特全球技术公司 | Variable flux bridge for rotor |
| CN207705911U (en) * | 2017-11-30 | 2018-08-07 | 贵溪泰来科技发展有限公司 | A kind of washing machine motor rotor |
| CN207977874U (en) * | 2017-12-15 | 2018-10-16 | 常州市三协电机电器有限公司 | A kind of water pump DC brushless motor |
| CN108347114A (en) * | 2018-05-07 | 2018-07-31 | 东莞市智配机电科技有限公司 | A kind of brushless DC servo motor rotor fixed structure |
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| CN208955871U (en) * | 2018-11-14 | 2019-06-07 | 福州力王电子科技有限公司 | A kind of brushless hollow-cup motor |
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| CN110098676A (en) * | 2019-05-06 | 2019-08-06 | 哈尔滨理工大学 | A kind of rotor jacket of outer-rotor permanent magnet motor |
| CN210074910U (en) * | 2019-08-15 | 2020-02-14 | 深圳市申力微特电机有限公司 | Mounting structure of external rotor motor |
| CN211046598U (en) * | 2019-09-27 | 2020-07-17 | 广东天润自动化科技有限公司 | Servo motor |
| CN211018483U (en) * | 2019-12-24 | 2020-07-14 | 扬中市飞达通信设备有限公司 | Motor stator and rotor structure |
| CN110829722A (en) * | 2020-01-13 | 2020-02-21 | 成都微精电机股份公司 | Low-loss cooling structure used inside motor |
| CN211456834U (en) * | 2020-01-14 | 2020-09-08 | 深圳市和利成五金制品有限公司 | Assembly of brushless motor rotor core |
| CN112636513A (en) * | 2020-12-09 | 2021-04-09 | 全南县超亚科技有限公司 | Novel motor |
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| Publication number | Publication date |
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| CN112564357B (en) | 2022-01-07 |
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