CN107086690B - Efficient heat dissipation motor rotor structure - Google Patents
Efficient heat dissipation motor rotor structure Download PDFInfo
- Publication number
- CN107086690B CN107086690B CN201710335717.5A CN201710335717A CN107086690B CN 107086690 B CN107086690 B CN 107086690B CN 201710335717 A CN201710335717 A CN 201710335717A CN 107086690 B CN107086690 B CN 107086690B
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- rotor
- heat dissipation
- motor
- air flow
- area
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 58
- 238000009423 ventilation Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a motor rotor structure with high-efficiency heat dissipation, which comprises a rotor and a rotating shaft arranged in the center of the rotor, wherein a plurality of rotor heat dissipation air flow passages are arranged in the rotor; a rotor fan cover is arranged at both ends of the rotor, and a ventilation flow passage is arranged between the rotor fan cover and the rotating shaft; the ventilation flow passage between the rotor fan housing and the rotating shaft and the rotor heat dissipation flow passage in the rotor jointly form a rotor heat dissipation air duct. The invention has the advantages of energy saving, consumption reduction, high heat dissipation efficiency, simple structure and long service life of the motor.
Description
Technical Field
The invention relates to the field of motor rotors, in particular to a motor rotor structure with efficient heat dissipation.
Background
At present, the inner rotor of the motor is in a high-speed rotation state when in work at home and abroad, and basically does not dissipate heat. However, too high a rotor temperature can easily transfer heat to the bearing location via the motor shaft, reducing bearing life.
For asynchronous motors, high temperature rotors can cause an increase in the resistance of the motor rotor windings, thereby increasing the excitation losses of the motor rotor and reducing the motor efficiency. For a permanent magnet synchronous motor, the high-temperature rotor can cause the magnetic performance of a permanent magnet of the motor to be reduced, and even the permanent magnet is directly demagnetized, which is a consistent threat to the permanent magnet motor.
At present, part of motors at home and abroad adopt an open type heat dissipation mode (air is directly blown into an air gap between a rotor and a stator), and the heat dissipation method can effectively dissipate heat of the stator and the rotor of the motor, but has high requirements on working environment, and the motor is easy to cause short service life of a motor armature and influence normal operation of the motor due to air gap blockage when working in a wet dust pollution environment for a long time.
Some manufacturers outside the country also let in liquid in motor stator and rotor simultaneously, and even so the structure can effectually give rotor heat dissipation motor, because the high-speed rotation of structure complicacy and rotor structure encapsulation through long-time must cause certain damage to the motor shaft, very easily take place the seepage in the rotor cooling circulation circuit and cause the motor that burns out this moment, the security is relatively poor.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a motor rotor structure with high-efficiency heat dissipation, which is energy-saving, consumption-reducing, high-efficiency in heat dissipation, simple in structure and long in service life of a motor.
The technical scheme adopted by the invention is as follows:
the motor rotor structure with high-efficiency heat dissipation comprises a rotor and a rotating shaft arranged in the center of the rotor, wherein a plurality of rotor heat dissipation air flow channels are arranged in the rotor; a rotor fan cover is arranged at both ends of the rotor, and a ventilation flow passage is arranged between the rotor fan cover and the rotating shaft; the ventilation flow passage between the rotor fan housing and the rotating shaft and the rotor heat dissipation flow passage in the rotor jointly form a rotor heat dissipation air duct.
According to the invention, the rotor is provided with the heat dissipation air duct, and after external cold air is introduced, the rotor heat dissipation air duct can effectively dissipate heat of the whole motor; the rotor fan housing enables the rotor heat dissipation air channel and the air gap to form two completely independent spaces, and the possibility that dust and sundries in cooling gas block the air gap is effectively prevented.
Further, the rotor fan housing comprises a clamping shaft portion and a horn portion which are integrally formed, the clamping shaft portion is used for allowing the rotating shaft to pass through, a bearing is sleeved outside the clamping shaft portion, and one end of the horn portion, which is larger in opening, is in contact with the outer surface of the rotor.
Further, the rotor housing is made of a material having thermal conductivity.
In the invention, the rotor fan housing is made of a material with heat conductivity, and the bearing is assembled between the rotor fan housing and the motor end cover of the motor, and the rotor fan housing is made of a material with certain heat conductivity and has certain heat dissipation function, so that the bearings at two ends of the motor can be cooled while the motor rotor is cooled, thereby prolonging the service life of the motor.
Further, a plurality of magnets which enclose a closed ring are arranged in the rotor, the closed ring formed by the magnets divides the rotor into an outer rotor area and an inner rotor area, and a plurality of rotor heat dissipation air flow passages are uniformly arranged in the outer rotor area and the inner rotor area in a circumferential manner.
In the invention, the rotor heat dissipation air flow passages can be arranged in the rotor outer area and the rotor inner area, and only a single layer of rotor heat dissipation air flow passages can be arranged according to actual needs. Meanwhile, the heat dissipation ribs are arranged on the inner wall of the flow channel, so that the heat dissipation effect can be more effectively exerted.
Further, a wall of the rotor heat dissipation air flow channel arranged in the rotor inner region towards the stator direction is provided with heat dissipation ribs.
Further, the radiating ribs are provided with a plurality of radiating ribs, and the distributing structure is tooth-shaped.
Further, the rotor heat dissipation air flow channel arranged in the outer region of the rotor is arranged in a strip shape.
In the invention, the radiating ribs arranged on the wall of the rotor radiating wind channel in the direction of the stator are toothed, and the rotor rotates relative to the stator, so that the heat of the rotor in the direction of the stator is relatively large, the toothed structure can increase the radiating area, and the integral damage resistance of the rotor is enhanced.
Further, the number of the rotor outer areas is four, a plurality of rotor heat dissipation air flow passages are arranged in each rotor outer area, and the number of the rotor heat dissipation air flow passages arranged in the rotor inner areas is 8.
Further, the rotor cooling air duct is subjected to rust-proof and waterproof treatment.
According to the invention, the rotor cooling air duct is subjected to waterproof and antirust treatment, and the sectional area of the channel is large, so that the air blown into the motor in the cooling process can be saved from filtering moisture and air dust treatment, and even if the air dust blocking phenomenon occurs, compressed air can be used for directly cleaning the channel, and the method is simple and convenient.
Compared with the prior art, the invention has the beneficial effects that:
1. the structure is combined with the motor stator to dissipate heat simultaneously, and the inside and outside of the structure are provided with shorter heat dissipation paths, so that the structure also has the advantage of rapid heat dissipation;
2. the rotor is provided with a plurality of heat dissipation air channels, so that the weight of the motor can be reduced;
3. for the permanent magnet motor, the structure can open the air channels on the front and back of the permanent magnet of the rotor under the condition that the magnetic circuit environment is not affected, has the function of stabilizing the working temperature of the permanent magnet, and can greatly improve the permanent magnet characteristics and prolong the service life;
4. for induction motors, the heat dissipation channels are formed in the rotor, so that the temperature of the armature of the rotor can be reduced, and the motor efficiency is improved.
Drawings
Fig. 1: the structure of the invention is schematically shown;
fig. 2: the cross section of the rotor is schematically shown;
FIG. 3 is a front view of the rotor structure of the present invention;
fig. 4: the structural schematic diagram of the rotor fan housing is I;
fig. 5: the rotor fan housing of the invention is provided with a second structural schematic diagram.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples.
Examples:
as shown in fig. 1 and 2, a motor rotor structure with high-efficiency heat dissipation comprises a rotor 3 and a rotating shaft 4 arranged in the center of the rotor 3, wherein a plurality of rotor heat dissipation air flow passages 5 are arranged in the rotor 3; the two ends of the rotor 3 are respectively provided with a rotor fan cover 2, and a ventilation flow passage 6 is arranged between the rotor fan cover 2 and the rotating shaft 4; the ventilation flow passage 6 between the rotor fan housing 2 and the rotating shaft 4 and the rotor heat dissipation air passage 5 in the rotor 3 jointly form a rotor heat dissipation air passage 101.
As shown in fig. 3 and 4, the rotor housing 2 includes a clamping shaft portion 21 and a horn portion 22 that are integrally formed, the clamping shaft portion 21 is used for passing through the rotating shaft 4, the bearing 1 is sleeved outside, and the larger end of the horn portion 22 is in contact with the outer surface of the rotor 3; 8 fan blades 23 are uniformly distributed on the inner wall of the rotor fan housing 2. When the motor rotor rotates at a high speed, the air convection can be quickened to cool the motor rotor more quickly and effectively.
In this embodiment, the inner wall of the entire rotor housing is "bell-mouthed". When convection gas flows into the wide mouth from the narrow mouth, a fluid coanda effect is generated, so that the air pressure at the wide mouth end is obviously reduced, and more air around the narrow mouth end is driven to naturally flow to the wide mouth end; meanwhile, the pressure is reduced, and meanwhile, the heat of the flow channel can be absorbed, so that the cooling efficiency is improved. When the convection gas flows from the wide opening to the narrow opening, the convection gas is compressed, so that gas friction sound in the flow channel can be effectively absorbed.
The rotor housing 2 is made of a material having thermal conductivity.
The rotor 3 is internally provided with a plurality of magnets 31 which form a closed ring, the closed ring formed by the magnets divides the rotor into 4 rotor outer areas 32 and 1 rotor inner area 33, and a plurality of rotor heat dissipation air flow passages are uniformly arranged in the rotor outer areas 32 and the rotor inner area 33 in a circumferential manner.
The number of rotor heat dissipation air channels arranged in the rotor inner region 33 is 8, a plurality of heat dissipation ribs 34 are arranged on the wall facing the stator direction, and the distribution structure is tooth-shaped.
The rotor heat dissipation air flow passage arranged in the rotor outer region 32 is arranged in a strip shape.
And the rotor radiating air duct is subjected to rust-proof and waterproof treatment.
Various other corresponding changes and modifications will occur to those skilled in the art from the foregoing description and the accompanying drawings, and all such changes and modifications are intended to be included within the scope of the present invention as defined in the appended claims.
Claims (9)
1. The motor rotor structure with high-efficiency heat dissipation comprises a rotor and a rotating shaft arranged in the center of the rotor, and is characterized in that a plurality of rotor heat dissipation air flow passages are arranged in the rotor; a rotor fan cover is arranged at both ends of the rotor, and a ventilation flow passage is arranged between the rotor fan cover and the rotating shaft; the rotor fan cover comprises a clamping shaft part and a horn part which are integrally formed, the clamping shaft part is used for allowing the rotating shaft to pass through, a bearing is sleeved outside the clamping shaft part, and one end of the horn part with a larger opening is contacted with the outer surface of the rotor; the inner wall of the rotor fan housing is uniformly distributed with a plurality of fan blades, the rotor fan housing is provided with a first rotor fan housing at an air inlet end and a second rotor fan housing at an air outlet end, cold air passes through the first fan housing to generate a fluid coanda effect, and the cold air passes through the second fan housing to compress gas to reduce gas friction sound.
2. The high-efficiency heat dissipation motor rotor structure of claim 1, wherein the fan blades are provided with 8 blades.
3. A high efficiency heat dissipating motor rotor structure according to any one of claims 1 or 2, wherein said rotor housing is made of a material having thermal conductivity.
4. The efficient heat dissipation motor rotor structure as recited in claim 1, wherein a plurality of magnets are arranged in the rotor to form a closed ring, the closed ring divides the rotor into an outer rotor area and an inner rotor area, and a plurality of rotor heat dissipation air flow passages are uniformly arranged in the outer rotor area and the inner rotor area in a circumferential manner.
5. The efficient heat dissipation motor rotor structure as recited in claim 4, wherein heat dissipation ribs are arranged on walls of the rotor heat dissipation air flow channels arranged in the rotor inner area towards the stator direction.
6. The efficient heat dissipation motor rotor structure as recited in claim 5, wherein the heat dissipation ribs are provided in a plurality of rows, and the distribution structure is tooth-shaped.
7. The high-efficiency heat dissipation motor rotor structure as recited in claim 6, wherein the rotor heat dissipation air flow passage arranged in the outer rotor region is arranged in a strip shape.
8. The high-efficiency heat dissipation motor rotor structure according to claim 4, wherein the number of the rotor outer areas is four, each rotor outer area is provided with a plurality of rotor heat dissipation air flow passages, and the number of the rotor heat dissipation air flow passages arranged in the rotor inner area is 8.
9. The high-efficiency heat-dissipating motor rotor structure of claim 1, wherein the rotor heat-dissipating air duct is subjected to rust-proof and water-proof treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710335717.5A CN107086690B (en) | 2017-05-12 | 2017-05-12 | Efficient heat dissipation motor rotor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710335717.5A CN107086690B (en) | 2017-05-12 | 2017-05-12 | Efficient heat dissipation motor rotor structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107086690A CN107086690A (en) | 2017-08-22 |
| CN107086690B true CN107086690B (en) | 2024-03-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710335717.5A Active CN107086690B (en) | 2017-05-12 | 2017-05-12 | Efficient heat dissipation motor rotor structure |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11299141A (en) * | 1998-04-14 | 1999-10-29 | Hitachi Ltd | Rotating electric machine |
| CN101897106A (en) * | 2007-12-20 | 2010-11-24 | 西门子公司 | Electric machine having a twin axial fan |
| CN104882981A (en) * | 2015-06-15 | 2015-09-02 | 上海电机***节能工程技术研究中心有限公司 | Rotor punching structure for permanent-magnet servo motor |
| CN105634209A (en) * | 2016-03-15 | 2016-06-01 | 冯亮 | Totally enclosed motor for achieving separate cooling of stator and rotor by dual-channel fan |
| CN205681242U (en) * | 2016-06-24 | 2016-11-09 | 新界泵业集团股份有限公司 | Improve the electric motor for pump of cage rotor structure |
| CN207053273U (en) * | 2017-05-12 | 2018-02-27 | 广东联塑机器制造有限公司 | A kind of motor rotor construction of high efficiency and heat radiation |
-
2017
- 2017-05-12 CN CN201710335717.5A patent/CN107086690B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11299141A (en) * | 1998-04-14 | 1999-10-29 | Hitachi Ltd | Rotating electric machine |
| CN101897106A (en) * | 2007-12-20 | 2010-11-24 | 西门子公司 | Electric machine having a twin axial fan |
| CN104882981A (en) * | 2015-06-15 | 2015-09-02 | 上海电机***节能工程技术研究中心有限公司 | Rotor punching structure for permanent-magnet servo motor |
| CN105634209A (en) * | 2016-03-15 | 2016-06-01 | 冯亮 | Totally enclosed motor for achieving separate cooling of stator and rotor by dual-channel fan |
| CN205681242U (en) * | 2016-06-24 | 2016-11-09 | 新界泵业集团股份有限公司 | Improve the electric motor for pump of cage rotor structure |
| CN207053273U (en) * | 2017-05-12 | 2018-02-27 | 广东联塑机器制造有限公司 | A kind of motor rotor construction of high efficiency and heat radiation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107086690A (en) | 2017-08-22 |
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