CN112564387A - Motor air cooling device - Google Patents
Motor air cooling device Download PDFInfo
- Publication number
- CN112564387A CN112564387A CN202011521871.XA CN202011521871A CN112564387A CN 112564387 A CN112564387 A CN 112564387A CN 202011521871 A CN202011521871 A CN 202011521871A CN 112564387 A CN112564387 A CN 112564387A
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- Prior art keywords
- motor
- air
- fan
- casing
- cooling device
- 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.)
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- 238000001816 cooling Methods 0.000 title claims abstract description 33
- 230000017525 heat dissipation Effects 0.000 claims abstract description 22
- 230000008859 change Effects 0.000 claims abstract description 11
- 230000001681 protective effect Effects 0.000 claims abstract description 4
- 230000007704 transition Effects 0.000 claims description 11
- 238000009423 ventilation Methods 0.000 claims description 7
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000005215 recombination Methods 0.000 description 3
- 230000006798 recombination Effects 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Motor Or Generator Cooling System (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention discloses a motor air cooling device, which comprises a motor body, a side air duct plate, a fan and a heat conducting piece, wherein the side air duct plate is arranged on the motor body; the fan is connected to the tail of the motor body, the side air duct plates are connected to the left side and the right side of the motor body, a heat dissipation air cavity is formed between the side air duct plates and the motor, the shell is provided with fins and assembling grooves which are distributed circumferentially, and the phase change heat pipe is arranged in the assembling grooves; the fan comprises a flow guide cover, a fan motor, a fan support and a protective cover, the flow guide cover is connected to the rear end cover of the motor body, one end, close to the motor, of the flow guide cover along the axis is an air outlet, and one end, far away from the motor, of the flow guide cover is an air inlet. The device can realize the quick heat dissipation on the surface of the machine shell, so that more heat is conducted to the shell from the stator winding and the stator core to dissipate heat, and the more excellent temperature control performance of the servo motor is realized.
Description
Technical Field
The invention relates to the field of motors, in particular to a motor air cooling device.
Background
The working temperature of the motor directly affects the efficiency, reliability and service life of the motor. The aging of motor insulating materials can be accelerated by the overhigh temperature rise of the motor, the service life is shortened, the winding resistance can be increased by the overhigh temperature rise, the efficiency of the motor is reduced, the reduction of the efficiency of the motor further leads to the increase of heat productivity, and therefore the temperature rise is increased again. Temperature control is therefore critical to the efficiency, stability and reliability of motor operation.
Stator winding and stator core are servo motor's the main part that generates heat, and stator core installs at the casing inner wall, exports the casing through the contact with the casing with the heat, and the casing carries out the natural cooling heat dissipation with the air contact, and along with the increase of motor power density, this kind of single cooling method causes the local position temperature of casing too high, the too big phenomenon of temperature gradient, and the heat dissipation problem of motor becomes the important factor that restricts the motor and give play to the performance. This problem is urgently needed to be solved.
Utility patent "a servo motor air cooling unit", patent number CN 210985821U, this utility model carries out the forced air cooling heat dissipation through seting up the bleeder vent on motor body, but the offer of bleeder vent can destroy the motor enclosed construction originally, and outside air and dust etc. can enter into the motor in, influence the material property and the operational environment of motor inner part. In addition, when cooling air blows to the front end from the rear end of the motor, the cooling air speed can be reduced, the convection heat transfer coefficient of the surface of the shell can be reduced along with the reduction of the air speed, so that the uneven temperature distribution of the surface of the shell is caused, the heat of the front end of the motor cannot be effectively transferred out, and the whole heat dissipation efficiency is influenced. The device occupies a large volume, and is inconvenient for the application and installation of the motor in a limited space.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the servo motor air cooling device which is small in occupied space, simple in structure, convenient to disassemble and assemble, suitable for various servo motors and high in heat dissipation efficiency.
The invention is realized by the following technical scheme:
a motor air cooling device comprises a motor body, a side air duct plate, a fan and a heat conducting piece;
the motor body comprises a shell, a front end cover, a rear end cover and an encoder, wherein the front end cover and the rear end cover are fixed on the shell, the encoder is fixed on the rear end cover, fins and an assembly groove are arranged on the shell, a heat conducting piece is fixedly arranged in the assembly groove, a fan is connected onto the rear end cover, a side air duct plate is fixedly arranged on the side wall of the shell, and a ventilation and heat dissipation channel is formed between the side air duct plate and the shell.
Furthermore, the side air duct plate extends along the axial direction of the machine shell from the rear end cover of the motor to the front end cover of the motor, the side air duct plate is detachably connected with the machine shell or integrally formed with the machine shell, and the fins are connected with the side air duct plate or leave gaps so as to divide the ventilation and heat dissipation channel into a plurality of cavity air ducts.
Further, the heat conducting member is a phase change heat pipe. The phase-change heat pipe is used as a heat conducting and soaking part, has high-efficiency heat transfer capacity, can reduce the temperature difference gradient of the shell of the machine shell, and realizes heat distribution recombination.
Further, the phase change heat pipe is fixed in the assembling groove through welding, gluing or interference expansion.
Further, the cross-sectional shape of the assembling groove is semicircular, circular or rectangular.
Further, the fan includes kuppe and fan motor, and the kuppe is connected on motor body's rear end cap, and the one end that the kuppe is close to motor body along the axis is the air outlet, and the one end of keeping away from motor body is the air intake, and fan motor is fixed to be set up in kuppe air intake department.
Furthermore, the fan also comprises a protective cover which is fixedly arranged at the air inlet of the air guide sleeve and positioned on the outer side of the fan motor. Protect through setting up the protection casing, improve the security.
Furthermore, one end of the air guide sleeve is a hollow round-corner rectangular shell, the other end of the air guide sleeve is a circular shell, and the middle of the air guide sleeve is in transition through a boss shell.
Furthermore, the corner transition of the side air duct plate and the corner transition of the air guide sleeve are consistent with the corner transition shape of the front end cover of the motor.
Furthermore, an encoder open slot is formed in the air guide sleeve, and a wiring line of an encoder of the motor body penetrates through the encoder open slot.
Compared with the prior art, the invention has the following beneficial effects:
1) the invention adopts external forced air cooling as a motor heat dissipation mode, compared with a mode that blades are arranged on a motor shaft and an external fan is adopted, the invention can realize the continuous high-speed output of cooling air on a motor with lower rated speed, and the heat dissipation performance is not influenced by the speed of the motor at the moment.
2) The air duct is formed by surrounding a side air duct plate and a flow guide cover with the shell, the shell is provided with a plurality of fins, and the fins divide the air duct into a plurality of cavity air ducts, so that the air speed loss of cooling air passing through the air duct is reduced, and the air cooling heat dissipation efficiency is enhanced.
3) The phase-change heat pipe is used as a heat conducting and soaking part, has high-efficiency heat transfer capacity, can reduce the temperature difference gradient of the shell of the machine shell, and realizes heat distribution recombination.
4) The whole set of device can keep the original overall structure of motor when using, does not influence the seal structure of motor itself, and occupation space is little, connects simply, is applicable to the servo motor of various casing appearance structures.
5) The device can realize quick heat dissipation on the surface of the shell, so that more heat is conducted to the shell from the stator winding and the stator core to dissipate heat, and more excellent temperature control performance of the servo motor is realized.
Drawings
Fig. 1 is a schematic three-dimensional structure of the present invention.
Fig. 2 is a schematic perspective view of a motor body equipped with a phase-change heat pipe according to the present invention.
Fig. 3 is a schematic perspective view of a housing according to the present invention.
Fig. 4 is a schematic perspective view of a housing according to the present invention.
Fig. 5 is a schematic perspective view of the side duct plate according to the present invention.
Fig. 6 is a schematic perspective view of a fan according to the present invention.
Detailed Description
Referring to fig. 1 to 6, an air cooling device for a motor according to an embodiment of the present invention includes a motor body 1, two side duct plates 2, a fan 3, and a heat conducting member 4.
The motor body 1 comprises a hollow cylindrical casing 11, the left side and the right side of the casing 11 can be respectively connected and fixed with two symmetrically-installed side air duct plates 2 through a plurality of threaded holes 111 formed in the casing, and the structure of the casing 11 is as shown in fig. 3. In another embodiment, the housing 11 may be integrally formed with the side duct plate 2, as shown in fig. 4. The length of the side air duct plate 2 can be 50% -80% of the length of the casing 11, and a ventilation and heat dissipation channel parallel to the axis of the motor body 1 is formed between the left and right side walls of the casing 11 and the inner side of the side air duct plate 2, so that cooling air blown out by the fan 3 can pass through the ventilation and heat dissipation channel, and heat convection and heat dissipation on the surface of the casing 11 can be enhanced. The casing 11 is provided with a plurality of fins 112 with corresponding different lengths at the peripheral groove positions, and the fins 112 are connected with the side air duct plate 2 or have gaps, so that the ventilation and heat dissipation channel is divided into a plurality of air cavities by the fins 112, the air speed loss of cooling air passing through the air duct can be further reduced, and the air cooling and heat dissipation efficiency is enhanced; when the fins 112 are connected to the side air duct plates 2, the heat on the surface of the casing 11 can be conducted to the side air duct plates 2 through the fins 112, so that the heat dissipation area is increased, and the heat dissipation efficiency is improved.
The groove of the case 11 is provided with an assembly groove 113, the length direction of the assembly groove 113 is consistent with the length direction of the case 11, the heat conducting member 4 is fixedly arranged in the assembly groove 113, and the cross section of the assembly groove 113 is semicircular, circular or rectangular. Specifically, a plurality of assembling grooves 113 are formed in each groove, the assembling grooves 113 and the fins 112 are arranged at intervals in each groove, and the heat conducting member 4 is fixed on each assembling groove 113. By providing a plurality of heat-conducting members and a plurality of fins 112 within each groove, heat dissipation can be increased. In this embodiment, the cross-sectional shape of the assembly groove 113 is a semicircle, and the heat-conducting member is a circular phase-change heat pipe 4 with a diameter of 6 mm. Preferably, the phase change heat pipe 4 may be a copper micro-groove heat pipe, the inner wall of which is provided with a plurality of micro-grooves, the micro-grooves are uniformly distributed along the inner wall of the phase change heat pipe, and the phase change heat pipe is formed by an extrusion drawing process and is fixed in the assembling groove 113 by welding, gluing or interference expansion. The middle temperature of the original motor shell along the axial direction is high, the temperatures of the front end and the rear end are lower (the front end refers to the end where the motor shaft extends out, and the rear end refers to the end where the encoder and the fan are placed), and the heat in the middle can be transferred to the rear end of the motor by axially arranging the phase change heat pipe. Meanwhile, the wind speed of cooling wind can be reduced after passing through the wind channel, so that the temperature of the front end of the motor is high, the temperature of the rear end of the motor is low, heat at the front end is conducted to the rear end for cooling through the heat conduction effect of the phase change heat pipe, the temperature difference between the front end and the rear end can be reduced, and heat distribution recombination can be realized.
The rear end of the motor body 1 comprises a rear end cover 13 and an encoder 14 mounted on the rear end cover 13, wherein 4M 2.5 threaded holes 131 and 4M 5 through holes 132 are formed in the rear end cover 13, the threaded holes 131 and the through holes 132 are arranged in a staggered mode along the circumference, the rear end cover 13 is fixed on the machine shell 11 through threaded connection of the through holes 131, and the fan 3 is fixed on the rear end cover through threaded connection of the threaded holes 132.
The side air duct plate 2 is made of the same material as the casing 11, and can be an aluminum thin plate under the condition of considering the light weight of the motor, and the casing can be formed by aluminum material integrated extrusion molding or wire cutting processing.
The working voltage of the fan motor 33 can be 24V, which is consistent with the working voltage of the encoder of the servo motor and the brake module, and strong electric interference can not be brought to the encoder.
The whole set of device can remain the original overall structure of motor when using, does not influence the seal structure of motor itself, and occupation space is little, connects simply, is applicable to all kinds of motors, including servo motor, has realized the outstanding control by temperature change performance of motor, has guaranteed motor work efficiency and life.
The above embodiments are only preferred embodiments of the present invention, but the present invention is not limited thereto, and any other changes, modifications, substitutions, combinations, simplifications, which are made without departing from the spirit and principle of the present invention, are all equivalent replacements within the protection scope of the present invention.
Claims (10)
1. The utility model provides a motor air cooling device which characterized in that: comprises a motor body (1), a side air duct plate (2), a fan (3) and a heat conducting piece (4);
motor body (1) includes casing (11), fix front end housing (12) on casing (11), rear end housing (13) and fixed encoder (14) on rear end housing (13), be equipped with fin (112) and assembly groove (113) on casing (11), heat-conducting piece (4) are fixed to be set up in assembly groove (113), fan (3) are connected on rear end housing (13), side wind channel board (2) are fixed to be set up on the lateral wall of casing (11), and form ventilation cooling channel between side wind channel board (2) and casing (11).
2. The motor air-cooling device according to claim 1, wherein: the side air duct plate (2) extends axially along the casing (11) from the rear end cover (13) of the motor to the front end cover (12) of the motor, the side air duct plate (2) is detachably connected with the casing (11) or integrally formed with the casing (11), and the fins (112) are connected with the side air duct plate (2) or leave gaps to separate the ventilation and heat dissipation channel into a plurality of cavity air ducts.
3. The motor air-cooling device according to claim 1, wherein: the heat conducting piece (4) is a phase change heat pipe.
4. The motor air-cooling device according to claim 3, wherein: the phase change heat pipe (4) is fixed in the assembling groove (113) through welding, adhesive bonding or interference expansion.
5. The motor air-cooling device according to claim 1, wherein: the cross-sectional shape of the fitting groove (113) is semicircular or circular or rectangular.
6. An air-cooling apparatus for an electric motor according to any one of claims 1 to 5, wherein: fan (3) are including kuppe (31) and fan motor (33), and kuppe (31) are connected on rear end cap (13) of motor body (1), and kuppe (31) are close to the one end of motor body (1) along the axis and are the air outlet, and the one end of keeping away from motor body (1) is the air intake, and fan motor (33) are fixed to be set up in kuppe (31) air intake department.
7. The motor air-cooling device of claim 6, wherein: the fan (3) further comprises a protective cover (32), and the protective cover (32) is fixedly arranged at an air inlet of the air guide sleeve (31) and is positioned on the outer side of the fan motor (33).
8. The motor air-cooling device of claim 6, wherein: one end of the air guide sleeve (31) is a hollow round-corner rectangular shell, the other end of the air guide sleeve is a circular shell, and the middle of the air guide sleeve is transited through a boss shell.
9. The motor air-cooling device of claim 6, wherein: the corner transition of the side air duct plate (2), the corner transition of the air guide sleeve (31) and the corner transition of the front end cover (12) of the motor are consistent in shape.
10. The motor air-cooling device of claim 6, wherein: an encoder open slot (35) is formed in the air guide sleeve (31), and the wiring of an encoder (14) of the motor body (1) penetrates through the encoder open slot (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011521871.XA CN112564387A (en) | 2020-12-21 | 2020-12-21 | Motor air cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011521871.XA CN112564387A (en) | 2020-12-21 | 2020-12-21 | Motor air cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112564387A true CN112564387A (en) | 2021-03-26 |
Family
ID=75031632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011521871.XA Pending CN112564387A (en) | 2020-12-21 | 2020-12-21 | Motor air cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112564387A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111049310A (en) * | 2018-10-11 | 2020-04-21 | 西门子股份公司 | Electric machine |
| CN114362423A (en) * | 2021-12-08 | 2022-04-15 | 赵翊宸 | Energy-saving rare earth permanent magnet generator |
| CN114583871A (en) * | 2022-04-06 | 2022-06-03 | 常州市南方电机有限公司 | Motor shell structure with primary energy efficiency and assembly method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203840112U (en) * | 2014-04-28 | 2014-09-17 | 大洋电机新动力科技有限公司 | Inner air-cooling structure of motor |
| CN106602774A (en) * | 2016-12-06 | 2017-04-26 | 中山市华南理工大学现代产业技术研究院 | Motor air-cooled casing based on integrated extrusion molding and phase-change heat pipe technology |
| CN107425655A (en) * | 2017-09-14 | 2017-12-01 | 杭州桢正玮顿运动控制技术有限公司 | A kind of air-cooled servomotor |
| CN207766072U (en) * | 2017-11-13 | 2018-08-24 | 中山大洋电机股份有限公司 | A kind of phase-change heat motor stator component and its ventilated machine of application |
| CN212063696U (en) * | 2020-05-23 | 2020-12-01 | 浙江斯耐特动力股份有限公司 | Vehicle-mounted hydraulic oil pump integrated permanent magnet synchronous motor |
| CN214480023U (en) * | 2020-12-21 | 2021-10-22 | 华南理工大学 | Motor air cooling device |
-
2020
- 2020-12-21 CN CN202011521871.XA patent/CN112564387A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203840112U (en) * | 2014-04-28 | 2014-09-17 | 大洋电机新动力科技有限公司 | Inner air-cooling structure of motor |
| CN106602774A (en) * | 2016-12-06 | 2017-04-26 | 中山市华南理工大学现代产业技术研究院 | Motor air-cooled casing based on integrated extrusion molding and phase-change heat pipe technology |
| CN107425655A (en) * | 2017-09-14 | 2017-12-01 | 杭州桢正玮顿运动控制技术有限公司 | A kind of air-cooled servomotor |
| CN207766072U (en) * | 2017-11-13 | 2018-08-24 | 中山大洋电机股份有限公司 | A kind of phase-change heat motor stator component and its ventilated machine of application |
| CN212063696U (en) * | 2020-05-23 | 2020-12-01 | 浙江斯耐特动力股份有限公司 | Vehicle-mounted hydraulic oil pump integrated permanent magnet synchronous motor |
| CN214480023U (en) * | 2020-12-21 | 2021-10-22 | 华南理工大学 | Motor air cooling device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111049310A (en) * | 2018-10-11 | 2020-04-21 | 西门子股份公司 | Electric machine |
| CN114362423A (en) * | 2021-12-08 | 2022-04-15 | 赵翊宸 | Energy-saving rare earth permanent magnet generator |
| CN114362423B (en) * | 2021-12-08 | 2024-08-02 | 江西维德机械制造有限公司 | Energy-saving rare earth permanent magnet generator |
| CN114583871A (en) * | 2022-04-06 | 2022-06-03 | 常州市南方电机有限公司 | Motor shell structure with primary energy efficiency and assembly method thereof |
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