CN111431344A - Inorganic shell air-cooled permanent magnet motor - Google Patents
Inorganic shell air-cooled permanent magnet motor Download PDFInfo
- Publication number
- CN111431344A CN111431344A CN202010065126.2A CN202010065126A CN111431344A CN 111431344 A CN111431344 A CN 111431344A CN 202010065126 A CN202010065126 A CN 202010065126A CN 111431344 A CN111431344 A CN 111431344A
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- China
- Prior art keywords
- end cover
- axle
- permanent magnet
- heat dissipation
- extension end
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
-
- 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 Cooling System (AREA)
Abstract
The invention discloses an inorganic shell air-cooled permanent magnet motor, and relates to the field of permanent magnet motors. The conventional air cooling structure adopts natural heat transfer and realizes the heat dissipation of the motor by cooling the air blowing casing, and has low cooling efficiency and high cost. The invention comprises a stator assembly, a rotor assembly, a non-shaft extension end cover and a shaft extension end cover, wherein the stator assembly comprises a stator iron core and a winding, the rotor assembly comprises a rotating shaft and a rotor body, an output shaft of the rotor extends out of the shaft extension end cover, a heat dissipation fan is arranged on the rotating shaft and positioned on the inner side of the non-shaft extension end cover, a left-right through ventilation hole is formed in the non-shaft extension end cover, a fixing rib and a heat dissipation rib are arranged on the periphery of the stator iron core, the fixing rib extends leftwards and is matched with the non-shaft extension end cover, a wind blocking ring is arranged on the outer side of the left part of the fixing rib, and the fixing. Through getting rid of the casing to set up radiator fan directly in the end cover inboard, cool off the mode that stator core directly bloies, the radiating efficiency is high, realizes good heat dissipation with lower cost.
Description
Technical Field
The invention relates to the field of permanent magnet motors, in particular to an air-cooled permanent magnet motor without a shell.
Background
At present, most of high-power motors are of a shell water-cooling structure, flowing cooling liquid carries heat to a water tank through a water channel of the motor shell, and the flowing cooling liquid is cooled by blowing air through a fan through a cooling fin of the water tank.
The other type is a conventional air cooling structure, and is characterized in that cooling fins are cast or processed on a shell, and main heating components of the permanent magnet motor are a stator core and a stator winding, so that the cooling mode adopts a natural heat transfer mode to transfer heat of the stator winding to the stator core and then to a shell through the stator core, and heat dissipation is realized by a mode of cooling the air blowing shell.
Disclosure of Invention
The technical problem to be solved and the technical task to be solved by the invention are to perfect and improve the prior technical scheme, and provide the inorganic shell air-cooled permanent magnet motor, which aims at realizing good heat dissipation at lower cost. Therefore, the invention adopts the following technical scheme.
The utility model provides an inorganic shell forced air cooling permanent-magnet machine, includes stator module, rotor subassembly, is located the non-axle of the stator module left and right sides and stretches end cover and axle and stretch end cover, stator module include stator core and winding, the rotor subassembly include the pivot and locate the epaxial rotor body of commentaries on classics, the bearing support of passing through of pivot is on the non-axle stretches end cover and axle stretches end cover, and the pivot is overhanging in the axle and stretches end cover, its characterized in that: the pivot on lie in the inboard that the non-axle stretched the end cover and be equipped with a radiator fan, the non-axle stretch the end cover on be equipped with a plurality of ventilation holes that run through the non-axle and stretch the end cover, stator core's periphery be equipped with many axial fixed muscle, the both ends of fixed muscle are stretched the end cover with the non-axle that corresponds, the axle stretches the end cover and is connected fixedly, the periphery that is close to non-axle of fixed muscle stretches the end cover end is equipped with round wind-break ring. Through getting rid of the casing to directly set up radiator fan in the end cover inboard, to the mode cooling of directly blowing of stator core, directly take away stator core's heat through the air current, the radiating efficiency is high, can effectively improve the power density and the torque density of motor, realizes good heat dissipation with lower cost.
As a preferable technical means: the cooling fan adopts a turbofan, an air inlet is formed in one side of a ventilation hole of the non-shaft extension end cover, an air outlet is formed between every two fan blades in the circumferential direction, and the ventilation hole is fan-shaped, surrounds the fan blades and is just opposite to the air inlet of the cooling fan. Through centrifugal action, cooling air gets into the back from the air inlet, through winding, ring and the comprehensive scattering of end cover inner wall to the winding of motor, stator core and rotor on, realizes the forced air cooling, and finally, the cooling air absorbs and blows off from the right-hand member outside of ring that keeps out the right side after the heat, takes away the heat again from the stator core outward appearance, can realize better cooling effect.
As a preferable technical means: the outer diameter of the cooling fan is smaller than the surrounding inner diameter of the winding, and the right side of an air outlet of the cooling fan is partially overlapped with the winding in the radial view direction. Make partial cooling wind direct action on the winding to through scattering inwards act on the inboard and the rotor of stator core and cool off, promote the cooling effect better.
As a preferable technical means: the outside that is located the ventilation hole on the non-axle extension end cover be equipped with a plurality of material grooves that subtract that encircle the equipartition, subtract the lateral surface that the material groove is located non-axle extension end cover. The weight of the end cover can be effectively reduced, and the cost is reduced.
As a preferable technical means: the periphery of stator core be equipped with the multiunit heat dissipation muscle, the heat dissipation muscle is located between each fixed muscle in circumference, the length and the stator core thickness of heat dissipation muscle equal. Effectively increase stator core's heat radiating area to cooling air passes from a left side to the right side from between the heat dissipation muscle, can promote the radiating effect to stator core better.
As a preferable technical means: the right end of the wind-blocking ring is abutted against the left end of the heat dissipation rib, and the left end of the wind-blocking ring is aligned with the left end of the fixing rib. The sealing of the wind blocking ring on the radial direction and the left side is realized, so that the cooling wind only flows out from the right side.
As a preferable technical means: the outer circumference of the end cover of the shaft extension end protrudes outwards with a fixed rib connecting seat corresponding to the fixed ribs in quantity, the left end and the right end of each fixed rib are provided with steps with high outer parts and low inner parts, and the fixed rib connecting seat and the fixed ribs, and the end cover of the non-shaft extension end and the fixed ribs are matched and positioned through the steps and fastened through bolts; the wind-shield ring and the fixing rib are fastened through bolts. The steps are matched and fixed, so that the positioning and the installation are convenient, and the connection is firm.
As a preferable technical means: the shaft extension end cover is provided with heat dissipation holes which penetrate through from left to right, and the heat dissipation holes are uniformly distributed in a surrounding mode. A better heat dissipation effect can be achieved.
As a preferable technical means: the right part inboard of fixed muscle be equipped with the round isolating ring, the left end of isolating ring offsets with stator core's right-hand member face, the right-hand member of isolating ring offsets with the left end face of axle extension end cover and the isolating ring periphery and axle extension end cover periphery parallel and level, the last inside and outside louvre that runs through that encircles the distribution that is equipped with of isolating ring. The isolating ring can prevent a large object from falling into the motor, and the radiating holes can guarantee the radiating effect.
As a preferable technical means: the fixed ribs are welded with the outer peripheral surface of the stator core; the number of the fixed ribs is 3-5, the fixed ribs are arranged in a surrounding mode at intervals of 90 degrees, and each group of radiating ribs and adjacent fixed ribs are arranged at 45-degree included angles or are perpendicular to the peripheral surface of the stator core in a tangential mode. The quantity position is arranged rationally, and less fixed muscle quantity when guaranteeing firm in connection, can effectively reduce weight, and the heat dissipation muscle angle is arranged rationally, can promote the radiating effect better.
Has the advantages that:
1. through getting rid of the casing to directly set up radiator fan in the inboard pivot of end cover, to the mode cooling of directly blowing of stator core, directly take away stator core's heat through the air current, the radiating efficiency is high, can effectively improve the power density and the torque density of motor, realizes good heat dissipation with lower cost.
2. Establish the heat dissipation muscle in stator core's periphery, effectively increase stator core's heat radiating area to the cooling air passes from a left side right side between the heat dissipation muscle, can promote the radiating effect to stator core better, because the cooling muscle with towards piece structure as an organic whole, replaced traditional casing forced air cooling, it is simpler to make, the cost is lower.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a main sectional structural schematic diagram of the present invention.
Fig. 3 is a main sectional structure diagram of a stator assembly in the invention.
Fig. 4 is a schematic end view of a stator core according to the present invention.
Fig. 5 is a main sectional structural view of the rotor assembly of the present invention.
In the figure: 1-a stator assembly; 2-a rotor assembly; 3-non-axial end cover; 4-shaft extension end cover; 5-a wind-shield ring; 6-a spacer ring; 101-fixing ribs; 102-a stator core; 103-winding; 104-heat dissipation ribs; 201-a heat dissipation fan; 202-a rotor body; 203-permanent magnet; 204-permanent magnet retainer ring; 205-a rotating shaft; 206-permanent magnet protective layer; 301-a vent; 302-a blowdown tank; 401-fixing the rib connecting seat.
Detailed Description
The technical scheme of the invention is further explained in detail by combining the drawings in the specification.
As shown in fig. 1-5, an air-cooled permanent magnet motor without a casing comprises a stator assembly 1, a rotor assembly 2 located inside the stator assembly 1, a non-shaft-extension end cap 3 and a shaft-extension end cap 4 located on the left and right sides of the stator assembly 1, the stator assembly 1 comprises a stator core 102 and a winding 103, the rotor assembly 2 comprises a rotating shaft 205 and a rotor body 202 located inside the stator core 102 on the rotating shaft 205, a left end bearing stop of the rotating shaft 205 is connected to a bearing inside a bearing chamber of the non-shaft-extension end cap 3, a right end bearing stop of the rotating shaft 205 is connected to a bearing inside a bearing chamber of the shaft-extension end cap 4, a rotor extending shaft extends out of the shaft-extension end cap 4, a heat dissipation fan 201 is arranged inside the non-shaft-extension end cap 3 on the rotating shaft 205, a permanent magnet 203 is embedded on the rotor body 202, permanent magnet retaining rings 204 are arranged, the outside that lies in permanent magnet 203 on rotor body 202 is equipped with permanent magnet protective layer 206, be used for preventing permanent magnet 203 radial displacement and protection permanent magnet 203, be equipped with 4 ventilation holes 301 that run through non-axle extension end cover 3 on the non-axle extension end cover 3, stator core 102's periphery welding has 4 axial fixed muscle 7, encircle arranging according to 90 degrees intervals, fixed muscle 7 extends left and non-axle extension end cover 3 matches and connects fixedly, the left part outside of fixed muscle 7 is connected with round windshield ring 5, fixed muscle 7 extends right and matches and connects fixedly with axle extension end cover 4, stator core 102's periphery is equipped with 4 groups of heat dissipation muscle 104, heat dissipation muscle 104 is located between each fixed muscle 7 in circumference, the length of heat dissipation muscle 104 equals with stator core 102 thickness.
In order to achieve a better cooling effect, the heat dissipation fan 201 is a turbofan, an air inlet is formed in one side of a vent hole 301 of the non-shaft-extension end cover 3, an air outlet is formed between each fan blade in the circumferential direction, and the vent hole 301 is fan-shaped, is uniformly distributed in a surrounding mode and is right opposite to the air inlet of the heat dissipation fan 201. Through centrifugal action, cooling air gets into the back from the air inlet, through winding 103, wind-break ring 5 and the comprehensive scattering of end cover inner wall to the winding 103, stator core 102 and the rotor of motor, realizes the forced air cooling, and finally, the cooling air is blown out from the right-hand member outside of wind-break ring 5 after absorbing the heat right-hand member outside, takes away the heat again from stator core 102 outward appearance, can realize better cooling effect.
In order to enhance the cooling effect better, the outer diameter of the heat dissipation fan 201 is smaller than the surrounding inner diameter of the winding 103, and the right side of the air outlet of the heat dissipation fan 201 partially overlaps the winding 103 in the radial direction. Part of cooling air directly acts on the winding 103 and acts on the inner side of the stator core 102 and the rotor through scattering to cool, and the cooling effect is improved better.
In order to reduce the weight of the end cover, 4 material reducing grooves 302 are uniformly distributed around the outer side of the vent hole 301 on the non-shaft extension end cover 3, and the material reducing grooves 302 are positioned on the left side of the non-shaft extension end cover 3. The weight of the end cover can be effectively reduced, and the cost is reduced.
In order to realize the outlet of the cooling air from the right side, the right end of the wind blocking ring 5 abuts against the left end of the heat dissipation rib 104, and the left end of the wind blocking ring 5 is aligned with the left end of the fixing rib 7. The sealing of the wind deflector ring 5 in the radial direction and on the left side is achieved, so that the cooling wind exits only from the right side.
In order to facilitate positioning and installation, 4 fixing rib connecting seats 401 protrude outwards from the outer circumference of the shaft extension end cover 4, steps with high outer parts and low inner parts are arranged at the left end and the right end of each fixing rib 7, and the fixing rib connecting seats 401 and the fixing ribs 7, and the non-shaft extension end cover 3 and the fixing ribs 7 are matched and positioned through the steps and fastened through bolts; the wind-shield ring 5 and the fixing rib 7 are fastened through bolts. The steps are matched and fixed, so that the positioning and the installation are convenient, and the connection is firm.
In order to improve the heat dissipation effect of the shaft extension end, the end cover 4 of the shaft extension end is provided with heat dissipation holes which penetrate left and right and are uniformly distributed in a surrounding manner. Better radiating effect of the motor shaft extension end can be realized.
Inside in order to prevent that great object from dropping into the motor, the right part inboard of fixed muscle 7 is equipped with round barrier ring 6, and the left end of barrier ring 6 offsets with stator core 102's right-hand member face, and the right-hand member of barrier ring 6 offsets with the left end face that the end cover 4 was stretched to the axle and barrier ring 6 periphery and the end cover 4 periphery parallel and level are stretched to the axle, is equipped with on the barrier ring 6 and runs through the louvre around inside and outside of distributing. The isolating ring 6 can prevent a large object from falling into the motor, and the radiating holes can guarantee the radiating effect.
In order to better improve the heat dissipation effect, each group of heat dissipation ribs 104 and the adjacent fixed ribs 7 are arranged at an included angle of 45 degrees, and the heat dissipation ribs 104 are arranged at a reasonable angle, so that the heat dissipation effect can be better improved. In this example, the fixing ribs 7 may be perpendicular to the outer peripheral surface of the stator core 102 in a tangential direction as an alternative.
When the motor operates, cooling air enters from the air vents 301, is sucked into the air inlets of the cooling fans 201, is discharged from the air outlets between the fan blades, is directly air-cooled inside the motor, is discharged from the right end of the wind blocking ring 5, and blows away heat on the surface of the cooling ribs 104. Through getting rid of the casing to set up radiator fan 201 directly in the end cover is inboard, cools off the mode of stator core 102 direct blast, directly takes away the heat of stator core 102 through the air current, and the radiating efficiency is high, can effectively improve the power density and the torque density of motor, realizes good heat dissipation with lower cost.
The above fig. 1-5 show an air-cooled pm machine without a casing, which is a specific embodiment of the present invention, and already shows the outstanding substantive features and significant progress of the present invention, and it is within the scope of the present invention to modify the same in shape, structure, etc. according to the practical needs.
Claims (10)
1. The utility model provides an inorganic case forced air cooling permanent-magnet machine, includes stator module (1), rotor subassembly (2), is located stator module (1) left and right sides's non-axle stretches end cover (3) and axle and stretches end cover (4), stator module (1) including stator core (102) and winding (103), rotor subassembly (2) including pivot (205) and locate rotor body (202) on pivot (205), support through the bearing of pivot (205) on non-axle stretches end cover (3) and axle and stretches end cover (4), and the pivot is overhanging in axle and stretches end cover (4), its characterized in that: pivot (205) on lie in the inboard that the non-axle stretched end cover (3) and be equipped with a radiator fan (201), the non-axle stretch and be equipped with a plurality of ventilation holes (301) that run through non-axle stretch end cover (3) on end cover (3), the periphery of stator core (102) be equipped with many axial fixed muscle (7), the both ends of fixed muscle (7) are stretched end cover (3), axle with the non-axle that corresponds and are stretched end cover (4) and be connected fixedly, the periphery that is close to non-axle stretch end cover (3) end of fixed muscle (7) is equipped with round wind-blocking ring (5).
2. The inorganic shell air-cooled permanent magnet motor according to claim 1, characterized in that: radiator fan (201) adopt turbofan, its ventilation hole (301) one side that is located non-axle extension end cover (3) is equipped with the air inlet, be the gas outlet between each flabellum of circumference, ventilation hole (301) be fan-shaped, encircle the equipartition to just to radiator fan (201)'s air inlet.
3. The inorganic shell air-cooled permanent magnet motor according to claim 2, characterized in that: the outer diameter of the cooling fan (201) is smaller than the surrounding inner diameter of the winding (103), and the right side of an air outlet of the cooling fan (201) is partially overlapped with the winding (103) in the radial view direction.
4. The inorganic shell air-cooled permanent magnet motor according to claim 2, characterized in that: the non-axial extension end cover (3) is provided with a plurality of material reducing grooves (302) which are uniformly distributed in a surrounding mode on the outer side of the vent hole (301), and the material reducing grooves (302) are located on the outer side face of the non-axial extension end cover (3).
5. The inorganic shell air-cooled permanent magnet motor according to claim 1, characterized in that: the periphery of stator core (102) be equipped with multiunit heat dissipation muscle (104), heat dissipation muscle (104) are located between each fixed muscle (7) in circumference, the length of heat dissipation muscle (104) equals with stator core (102) thickness.
6. The inorganic shell air-cooled permanent magnet motor according to claim 5, characterized in that: the right end of the wind-blocking ring (5) is abutted against the left end of the heat dissipation rib (104), and the left end of the wind-blocking ring (5) is aligned with the left end of the fixing rib (7).
7. The inorganic shell air-cooled permanent magnet motor according to claim 2, characterized in that: the outer circumference of the shaft extension end cover (4) is externally protruded with fixed rib connecting seats (401) corresponding to the fixed ribs (7) in quantity, the left end and the right end of each fixed rib (7) are provided with steps with high outer parts and low inner parts, and the fixed rib connecting seats (401) and the fixed ribs (7) and the non-shaft extension end cover (3) and the fixed ribs (7) are matched and positioned through the steps and are fastened through bolts; the wind-shield ring (5) and the fixing rib (7) are fastened through bolts.
8. The inorganic shell air-cooled permanent magnet motor according to claim 7, characterized in that: the shaft extension end cover (4) is provided with heat dissipation holes which penetrate through from left to right and are uniformly distributed in a surrounding manner.
9. The inorganic shell air-cooled permanent magnet motor according to claim 8, wherein: the right part inboard of fixed muscle (7) be equipped with round isolating ring (6), the left end of isolating ring (6) offsets with the right-hand member face of stator core (102), the right-hand member of isolating ring (6) offsets with the left end face of axle extension end cover (4) and isolating ring (6) periphery and axle extension end cover (4) periphery parallel and level, be equipped with on isolating ring (6) and run through the louvre around the inside and outside that distributes.
10. The inorganic shell air-cooled permanent magnet motor according to claim 9, characterized in that: the fixed rib (7) is welded with the outer peripheral surface of the stator core (102); the number of the fixed ribs (7) is 3-5, the fixed ribs are arranged in a surrounding mode at intervals of 90 degrees, and each group of heat dissipation ribs (104) and the adjacent fixed ribs (7) are arranged at 45-degree included angles or are perpendicular to the peripheral surface of the stator core (102) in a tangential mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010065126.2A CN111431344A (en) | 2020-01-20 | 2020-01-20 | Inorganic shell air-cooled permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010065126.2A CN111431344A (en) | 2020-01-20 | 2020-01-20 | Inorganic shell air-cooled permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111431344A true CN111431344A (en) | 2020-07-17 |
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ID=71547120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010065126.2A Pending CN111431344A (en) | 2020-01-20 | 2020-01-20 | Inorganic shell air-cooled permanent magnet motor |
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| Country | Link |
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| CN (1) | CN111431344A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111884426A (en) * | 2020-08-25 | 2020-11-03 | 上海电机***节能工程技术研究中心有限公司 | Motor rotor heat abstractor and motor |
| CN113014054A (en) * | 2021-04-14 | 2021-06-22 | 超音速智能技术(杭州)有限公司 | Integrated shell-less motor |
| CN113422461A (en) * | 2021-06-24 | 2021-09-21 | 浙江定能电机科技有限公司 | Self-buffering permanent magnet motor |
-
2020
- 2020-01-20 CN CN202010065126.2A patent/CN111431344A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111884426A (en) * | 2020-08-25 | 2020-11-03 | 上海电机***节能工程技术研究中心有限公司 | Motor rotor heat abstractor and motor |
| CN113014054A (en) * | 2021-04-14 | 2021-06-22 | 超音速智能技术(杭州)有限公司 | Integrated shell-less motor |
| CN113014054B (en) * | 2021-04-14 | 2022-07-08 | 超音速智能技术(杭州)有限公司 | Integrated shell-less motor |
| CN113422461A (en) * | 2021-06-24 | 2021-09-21 | 浙江定能电机科技有限公司 | Self-buffering permanent magnet motor |
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