CN111541317A - Air-cooled permanent magnet roller - Google Patents
Air-cooled permanent magnet roller Download PDFInfo
- Publication number
- CN111541317A CN111541317A CN202010644357.9A CN202010644357A CN111541317A CN 111541317 A CN111541317 A CN 111541317A CN 202010644357 A CN202010644357 A CN 202010644357A CN 111541317 A CN111541317 A CN 111541317A
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- China
- Prior art keywords
- air
- heat dissipation
- steel cylinder
- wall
- cooled permanent
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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
- H02K1/12—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
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Motor Or Generator Frames (AREA)
- Motor Or Generator Cooling System (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention relates to the technical field of electric heat dissipation, and discloses an air-cooled permanent magnet roller, which comprises: a stator assembly and a heat dissipation structure (2); the heat dissipation structure (2) comprises a steel cylinder (4) and heat dissipation fins (3), wherein an installation groove (7) is formed in the inner wall of the steel cylinder (4), and notches of the installation groove are deformed to be in pressure contact with the side faces of the heat dissipation fins (3). The heat dissipation structure is mainly used for the stator assembly, the mounting groove is formed in the inner wall of the steel cylinder for riveting the heat dissipation fins, welding materials and a welding gun can be reduced during welding, and the heat dissipation structure is environment-friendly and safe; the welding gun is not used, namely the space problem of the radiating fins is not needed to be considered, so that the plurality of radiating fins can be attached to the inner wall of the steel cylinder, the inner wall of the steel cylinder and the radiating fins are used as radiating surfaces, the uniformly distributed quantity of the radiating fins can be increased according to the actual radiating requirement, and the radiating area is increased, so that the radiating efficiency of the motor is directly improved.
Description
Technical Field
The invention relates to the technical field of electric heat dissipation, in particular to an air-cooled permanent magnet roller.
Background
The motor heat radiation structure form is various, mainly by two kinds of forms of water-cooling and air-cooling but mainly still use stator inner wall welding fin to the stator air-cooled heat dissipation of external rotor electric machine as the main, because at stator ring inner wall, welder often is difficult to stretch into when welding, consequently often can get into for welder, the fin interval can corresponding increase, thereby the quantity of welding fin receives the restriction, actual quantity often will be less than ideal quantity, thereby can not reach fine radiating effect.
The utility model discloses a PMSM rotor air-cooling structure in CN108539889A, its adoption along circumferencial direction evenly distributed in the outside of motor casing inside and motor casing water course, has arranged 2 ~ 6 fin in air guide channel inside for to the heat dissipation of rotor motor, the fin is small in quantity, and the radiating effect is poor.
Disclosure of Invention
The invention aims to solve the problems and provides a non-welded air-cooled permanent magnet roller with a multi-radiating-surface radiating structure.
The technical scheme is that the air-cooled permanent magnet roller comprises a stator assembly, wherein the stator assembly comprises a heat dissipation structure 2; the heat dissipation structure 2 comprises a steel cylinder 4 and a heat dissipation fin 3, wherein an installation groove 7 is formed in the inner wall of the steel cylinder 4, and a notch of the installation groove 7 deforms to be in pressure contact with the side face of the heat dissipation fin 3. The shape of the radiating fin 3 can be wave-shaped, V-like and tooth-shaped; the shape is favorable for increasing the heat dissipation area, and the wave shape is favorable for ventilation.
Preferably, the heat sink 3 and the mounting groove 7 are mounted by riveting, one end surface of the heat sink 3 is in contact with the bottom surface of the mounting groove 7, and the heat sink 3 is in contact with the side surface of the mounting groove 7.
Preferably, the inner wall of the steel cylinder 4 near the mounting groove 7 forms an indentation area 12. After the mounting groove 7 is embedded into the heat sink 3, under the extrusion action of the riveting tool, an indentation area 12 is formed near the notch of the mounting groove 7, so that the mounting groove 7 is deformed into a dovetail groove-like form with a large bottom and a small notch, and the heat sink 3 is firmly fastened.
Preferably, heat conduction silicone grease 8 is injected into the mounting groove 7, heat conduction silicone grease 8 is firstly injected and filled into the mounting groove 7, then the riveting tool is carried out, and after the heat conduction silicone grease 8 is solidified, a gap formed by the riveting tool can be sealed, so that better heat conduction can be realized by removing air.
Preferably, the mounting groove 7 is square or trapezoid or similar to sphere or a combination of the above shapes.
Preferably, the depth of the mounting groove 7 is more than 4mm and less than one third of the wall thickness of the steel cylinder 4. The depth of the mounting groove 7 is too deep, which affects the strength of the steel cylinder 4, and the mounting depth is too shallow, which is not beneficial to the mounting strength and stability of the radiating fin 3.
Preferably, the mounting grooves 7 are uniformly distributed on the inner wall of the steel cylinder 4 according to the circumference.
Preferably, the steel cylinder 4 is in an integral or sectional type.
Preferably, the section is a fan-shaped structure, and a plurality of fan-shaped structures surround to form the steel cylinder 4.
Preferably, the heat dissipation structure 2 includes rib plates 5, and the plurality of rib plates 5 are fixedly connected with the inner wall of the steel cylinder 4.
Preferably, the stator assembly comprises a stator punching sheet 1, an air guide cover 10 and a central shaft 6, the stator punching sheet 1 is connected with the steel cylinder 4 in a hot sleeved mode, and the stator punching sheet 1 is provided with grooves which are uniformly distributed along the circumference.
Preferably, a plurality of rib plates 5 are fixedly connected with the central shaft 6.
The invention has the beneficial effects that:
the heat dissipation structure is mainly used for the stator assembly, the mounting groove is formed in the inner wall of the steel cylinder for riveting the heat dissipation fins, welding materials and welding guns can be reduced in use during welding, the heat dissipation structure is environment-friendly and safe, the problem of space among the heat dissipation fins is not needed to be considered without using the welding guns, the plurality of heat dissipation fins can be attached to the inner wall of the steel cylinder, the inner wall of the steel cylinder and the heat dissipation fins are used as heat dissipation surfaces, the number of the heat dissipation fins which are uniformly distributed can be increased according to actual heat dissipation requirements, and the heat dissipation.
Drawings
FIG. 1 is a prior art heat sink mounting configuration;
fig. 2 is a heat dissipation structure diagram provided in the embodiment of the present invention;
fig. 3 is a structural view of a stator assembly according to an embodiment of the present invention;
FIG. 4 is a schematic view of a mounting slot provided in an embodiment of the present invention;
FIG. 5 is a schematic view of a heat sink mounting provided by an embodiment of the present invention;
fig. 6 is a schematic diagram of an indentation area formed in the installation of the heat sink according to an embodiment of the present invention.
The stator punching sheet comprises a stator punching sheet 1, a heat dissipation structure 2, a heat dissipation sheet 3, a steel cylinder 4, a rib plate 5, a central shaft 6, a mounting groove 7, heat conduction silicone grease 8, a rivet head 9, an air guide cover 10, a process groove 11 and an indentation area 12.
Detailed Description
Specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While specific embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
It should be noted that certain terms are used throughout the description and claims to refer to particular components. As one skilled in the art will appreciate, various names may be used to refer to a component. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. The description which follows is a preferred embodiment of the invention, but is made for the purpose of illustrating the general principles of the invention and not for the purpose of limiting the scope of the invention. The scope of the present invention is defined by the appended claims.
As shown in fig. 1, in the prior art, the heat dissipation fins are uniformly welded on the inner wall of the stator steel cylinder, and the distance L between the heat dissipation fins needs to be over 30mm, which is determined by considering that the actual welding gun cannot be too small, so that the number of the heat dissipation fins is greatly limited.
As shown in fig. 2, the heat dissipation structure 2 includes a steel cylinder 4, square fins 3 and rib plates 5, and the plurality of rib plates 5 are fixedly connected with the inner wall of the steel cylinder 4. The inner wall of the steel cylinder 4 is provided with a square mounting groove 7, the structure of the mounting groove 7 is shown in fig. 4, and the notch of the square mounting groove 7 is deformed to be in pressure contact with the side surface of the radiating fin 3. The steel cylinder 4 is of an integrated cylinder structure, the mounting grooves 7 are uniformly distributed on the inner wall of the steel cylinder 4 according to the circumference, and the depth H of the mounting grooves 7 is greater than 4mm and less than or equal to 1/3 of the wall thickness H of the steel cylinder 4.
As shown in fig. 5, for the installation schematic view of the heat sink 3 provided in embodiment 1 of the present invention, the heat conductive silicone grease 8 is injected into the mounting groove 7 first, then the mounting groove 7 and the square heat sink 3 are riveted by the rivet 9, the rivet enables a gap to be formed between the mounting groove 7 and the square heat sink 3, and the gap formed by the rivet can be sealed after the heat conductive silicone grease 8 is solidified, so that heat conduction can be performed better by removing air.
The rivet 9 is provided with a groove matched with the shape of the radiating fin 3, when the rivet 9 is pushed to the inner wall of the steel cylinder, due to the extrusion effect of the rivet 9, an indentation area 12 is formed on the inner wall of the steel cylinder 4 close to the notch position of the mounting groove 7, as shown in fig. 6, an arc-shaped indentation is formed, so that the mounting groove 7 is deformed into a dovetail groove-like form with a large bottom and a small notch, and the radiating fin 3 is firmly fastened. The depth of the mounting groove 7 is 6mm, which is one fourth of the wall thickness of the steel cylinder 4, the mounting depth is favorable for the strength of the steel cylinder 4, and meanwhile, the mounting strength and the stability of the radiating fins 3 are not influenced.
As shown in fig. 3, the stator assembly comprises a stator punching sheet 1, an air guide cover 10 and a central shaft 6, and a plurality of rib plates 5 are fixedly connected with the central shaft 6. The stator punching sheet 1 is connected with the steel cylinder 4 in a hot sleeved mode, and the stator punching sheet 1 is provided with grooves which are evenly distributed along the circumference. The wind scooper 10 is used for connecting the cooling fan, the air cooling fixing seat, the stator assembly and the heat dissipation structure 2 together, and the wind scooper is formed by connecting two annular end faces through a circumferential surface.
In a preferred embodiment, the rotor assembly is sleeved on the periphery of the stator assembly, two sides of the rotor assembly are connected with the end cover assembly through bolts, the end cover assembly is fixed on the bearing seats on two sides of the stator assembly through bearings, the cable lead is led into the stator assembly through the central shaft 6 threading holes, and input current generates a magnetic field, so that the rotor assembly rotates.
The fin 3 of this embodiment is riveting mode after the notch installation, can reduce the use of a large amount of welding material and welding man-hour welder, not only environmental protection but also reduce material and human cost, need not to consider the interval problem of fin promptly for can be according to actual demand with polylith fin on the inner wall of steel cylinder, improved the radiating effect.
The stator punching sheet 1 is assembled on the excircle of a heat dissipation structure 2 of the air cooling roller, and the heat dissipation structure 2 mainly comprises a steel cylinder 4, a heat dissipation sheet 3 and a rib plate 5 with a fixing function; the stator punching sheet 1 is formed by punching, bosses and grooves are distributed on the periphery of the stator punching sheet 1 and are arranged at intervals, process grooves 11 for punching sheet welding are formed in the inner wall of the stator punching sheet 1, the stator punching sheet 1 and a steel cylinder 4 are sleeved together in a hot mode, radiating fins 3 are uniformly distributed on the inner wall of the steel cylinder 4, the inner wall of the steel cylinder 4 is welded with a reinforcing plate 5 for fixing, the reinforcing plate 5 for fixing is welded with a central shaft 6, and the steel cylinder 4 is fixed on an intermediate shaft 6.
The steel cylinder 4 is cylindrical and is divided into six equal parts by the rib plate 5 with the fixing function, and 5 square mounting grooves 7 which are uniformly distributed on the circumference are arranged on the inner wall of each equal part.
The plurality of radiating fins 3 are arranged on the inner wall of the steel cylinder 4 through mounting grooves 7, and heat-conducting silicone grease 8 is filled in gaps of the mounting grooves 7. After the mounting groove 7 is embedded into the heat radiating fin 3, under the extrusion action of the rivet head 9, the notch is deformed into a dovetail groove-like form with a large upper part and a small lower part, so that the heat radiating fin 3 is firmly fastened.
In a preferred embodiment, the steel cylinder 4 is in the form of a segment, which is a fan-shaped structure, and a plurality of fan-shaped structures surround and form the steel cylinder 4.
The inner wall of the steel cylinder 4 is attached with a plurality of radiating fins 3, the inner wall of the steel cylinder 4 and the radiating fins 3 are used as radiating surfaces, the radiating fins 3 are in a riveting mode after being installed in notches, the number of the radiating fins 3 which are uniformly distributed can be increased randomly according to actual radiating requirements, the split type integral steel cylinder 4 is easier to install or weld the radiating fins 3, the rib plates 5 with the fixed action are welded with the split type steel cylinder 4 more firmly, and the strength stability is better.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that although the present specification describes the embodiments, the above-mentioned embodiments are exemplary and not intended to limit the scope of the present invention, and any changes, modifications, substitutions and alterations made by those skilled in the art without departing from the principle and spirit of the present invention shall be included in the scope of the present invention.
Claims (12)
1. The utility model provides an air-cooled permanent magnetism cylinder, includes stator module, its characterized in that: the stator assembly comprises a heat dissipation structure (2); the heat dissipation structure (2) comprises a steel cylinder (4) and heat dissipation fins (3), wherein an installation groove (7) is formed in the inner wall of the steel cylinder (4), and notches of the installation groove (7) are deformed to be in pressure contact with the side faces of the heat dissipation fins (3).
2. The air-cooled permanent magnet drum according to claim 1, wherein the heat sink (3) and the mounting groove (7) are mounted by riveting, one end surface of the heat sink (3) is in contact with the bottom surface of the mounting groove (7) and the heat sink (3) is in contact with the side surface of the mounting groove (7).
3. The air-cooled permanent magnet drum according to claim 2, wherein the inner wall of the steel drum (4) near the mounting groove (7) forms an indentation area (12).
4. The air-cooled permanent magnet drum according to claim 2 or 3, characterized in that the installation groove (7) is filled with heat-conducting silicone grease (8).
5. An air-cooled permanent-magnet drum according to claim 1, characterised in that the mounting groove (7) is selected from square or trapezoidal or spheroidal or a combination of these shapes.
6. An air-cooled permanent-magnet drum according to claim 5, characterised in that the depth of the mounting groove (7) is greater than 4mm and less than one third of the wall thickness of the steel drum (4).
7. The air-cooled permanent magnet drum according to claim 6, wherein the mounting slots (7) are evenly distributed on the inner wall of the steel drum (4) according to the circumference.
8. The air-cooled permanent-magnet drum according to claim 1, characterized in that the steel cylinder (4) is one-piece or sectioned.
9. The air-cooled permanent-magnet drum according to claim 8, characterized in that said segment is a sector structure, a plurality of said sector structures surrounding said steel drum (4).
10. The air-cooled permanent magnet drum according to any one of claims 7-9, wherein the heat dissipation structure (2) comprises rib plates (5), and a plurality of rib plates (5) are fixedly connected with the inner wall of the steel drum (4).
11. The air-cooled permanent magnet drum according to claim 10, wherein the stator assembly comprises a stator punching sheet (1), an air guide cover (10) and a central shaft (6), the stator punching sheet (1) is connected with the steel cylinder (4) in a hot sleeved mode, and the stator punching sheet (1) is provided with grooves which are uniformly distributed along the circumference.
12. The air-cooled permanent magnet drum according to claim 11, wherein a plurality of rib plates (5) are fixedly connected with the central shaft (6).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010644357.9A CN111541317B (en) | 2020-07-07 | 2020-07-07 | Air-cooled permanent magnet roller |
| PCT/CN2021/075063 WO2022007397A1 (en) | 2020-07-07 | 2021-02-03 | Air-cooled permanent magnet roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010644357.9A CN111541317B (en) | 2020-07-07 | 2020-07-07 | Air-cooled permanent magnet roller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111541317A true CN111541317A (en) | 2020-08-14 |
| CN111541317B CN111541317B (en) | 2021-02-26 |
Family
ID=71979798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010644357.9A Active CN111541317B (en) | 2020-07-07 | 2020-07-07 | Air-cooled permanent magnet roller |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111541317B (en) |
| WO (1) | WO2022007397A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022007397A1 (en) * | 2020-07-07 | 2022-01-13 | 江苏嘉轩智能工业科技股份有限公司 | Air-cooled permanent magnet roller |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204545838U (en) * | 2015-04-16 | 2015-08-12 | 深圳市三维机电设备有限公司 | A kind of fin automatic production device |
| CN110284142A (en) * | 2019-07-24 | 2019-09-27 | 东莞智富五金制品有限公司 | A kind of aluminium radiator and clinching method improving the embedding structure of riveting |
| CN111130266A (en) * | 2020-04-01 | 2020-05-08 | 江苏嘉轩智能工业科技股份有限公司 | Air cooling structure of outer rotor electric roller |
| CN111372425A (en) * | 2020-03-12 | 2020-07-03 | 苏州永腾电子制品有限公司 | Magnetic suction type air-cooled radiator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10742098B2 (en) * | 2018-01-19 | 2020-08-11 | Hamilton Sundstrand Corporation | Slot cooling fins in electrical machines |
| CN111541317B (en) * | 2020-07-07 | 2021-02-26 | 江苏嘉轩智能工业科技股份有限公司 | Air-cooled permanent magnet roller |
-
2020
- 2020-07-07 CN CN202010644357.9A patent/CN111541317B/en active Active
-
2021
- 2021-02-03 WO PCT/CN2021/075063 patent/WO2022007397A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204545838U (en) * | 2015-04-16 | 2015-08-12 | 深圳市三维机电设备有限公司 | A kind of fin automatic production device |
| CN110284142A (en) * | 2019-07-24 | 2019-09-27 | 东莞智富五金制品有限公司 | A kind of aluminium radiator and clinching method improving the embedding structure of riveting |
| CN111372425A (en) * | 2020-03-12 | 2020-07-03 | 苏州永腾电子制品有限公司 | Magnetic suction type air-cooled radiator |
| CN111130266A (en) * | 2020-04-01 | 2020-05-08 | 江苏嘉轩智能工业科技股份有限公司 | Air cooling structure of outer rotor electric roller |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022007397A1 (en) * | 2020-07-07 | 2022-01-13 | 江苏嘉轩智能工业科技股份有限公司 | Air-cooled permanent magnet roller |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022007397A1 (en) | 2022-01-13 |
| CN111541317B (en) | 2021-02-26 |
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