CN104158347A - Shaft and stator double cooling motor - Google Patents
Shaft and stator double cooling motor Download PDFInfo
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- CN104158347A CN104158347A CN201410414156.4A CN201410414156A CN104158347A CN 104158347 A CN104158347 A CN 104158347A CN 201410414156 A CN201410414156 A CN 201410414156A CN 104158347 A CN104158347 A CN 104158347A
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- stator
- main shaft
- air intake
- heat dissipation
- hole
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Abstract
The invention relates to a shaft and stator double cooling motor. A stator core is fixedly installed on a main shaft. The air inlet end and the air outlet end of the outer rotor are fixedly connected to the respective fixed plate. The fixed plate of the air inlet end is provided with an air inlet channel. Annular gaps which form an outer heat radiation air channel are arranged between a stator outer side face and a rotor inner side face. The stator core is internally provided with an axial through hole which forms an inner heat radiation air channel. A main shaft is provided with a main shaft hole which forms a main shaft heat radiation air channel. The air inlet end of the main shaft hole is sealed, and the air outlet end of the main shaft hole is provided with an induced draft fan. According to the shaft and stator double cooling motor, the forced air cooling is carried out through a plurality of heat radiation channels at the stator outer side, in the stator and in the main shaft, the control of the motor temperature rise is facilitated, the motor torque density and torque output are raised, and the shaft and stator double cooling motor is especially suitable for a low speed high torque motor.
Description
Technical field
The present invention relates to, on a kind of stator core and main shaft, the motor of forcing cooling structure is all set, be adapted to especially the lifting mechanism of low speed external rotor high pulling torque permagnetic synchronous motor and the gearless crane based on this motor.
Background technology
The advantages such as permanent magnet synchronous motor is high with its efficiency, power density is large are used widely, grow up on this basis a kind of rotor outside, stator core is at interior permagnetic synchronous motor, it is external rotor permanent magnet synchronous machine, traditional internal rotor permanent-magnetic synchronous machine than same volume, its stator core diameter is less, the wiring of stator core winding overhang is shorter, save copper cash, its root diameter is larger, therefore rotate the arm of force larger, be applicable to being very much applied to export the occasion of high pulling torque, as the corresponding electronic part of crane, electric motor car etc.
But also follow, there is new problem: in the iron loss of stator core self and stator core, the copper loss of stator winding can produce a large amount of heat, and whether these heat can discharge motor is in time one of key affecting electric machine temperature rise simultaneously.Under prior art, motor internal does not have special cooling path, and in order to keep the clean of motor internal, particularly avoid between stator core and rotor air gap by contaminating impurities such as dusts, conventionally motor two ends are provided with end cap (fixed disk) or adopt other forms of enclosed construction, therefore particularly the heat radiation of stator core is more difficult in the heat radiation of motor, be very easy to cause electric machine temperature rise, thereby the raising of restriction motor torque density, particularly for the external rotor permanent magnet synchronous machine of low-speed big, because quantity of heat production is large, it is particularly important that heat dissipation problem just seems.
The radiating mode of current permagnetic synchronous motor substantially all adopts surperficial naturally cooling or cooling fluid is cooling, wherein the surperficial natural type of cooling is generally the cooling surface area that increases motor, and thermal resistance is little in stator core outer cover, the aluminium shell of good heat dissipation effect, case surface arranges fin, thermal radiation and the mobile acquisition of air natural by motor housing surface are cooling, do not install other special cooling devices additional, this radiating mode is comparatively effective for inner rotor motor, but for external rotor electric machine, due to iron core, winding, gap, the radially heat dissipation channel that shell etc. form is long, thermal resistance is larger, radiating effect is not ideal enough, particularly for low-speed high-torque motor, cannot obtain satisfied radiating effect, become a key factor of this motor application of restriction.
Summary of the invention
In order to solve the problems referred to above under prior art, the invention provides the two cooling motors of a kind of axle and stator, adopt this motor directly to stator core and main shaft, to carry out by force ventilated mode air-cooled, be conducive to control electric machine temperature rise, improve motor torque density and moment of torsion output.
Technical scheme of the present invention is: the two cooling motors of a kind of axle and stator, comprise stator and rotor, described stator consists of stator core and the winding that is arranged in stator core, described stator core is fixedly mounted on main shaft, described rotor is external rotor, the air intake of described external rotor and outlet air end are fixedly connected with respectively fixed disk separately, the fixed disk of described each end respectively rotor bearing by is separately rotatably connected with described main shaft, the fixed disk of described air intake is provided with wind inlet channel, between the air intake of described stator and outlet air end and the fixed disk of each corresponding end, leave respectively the gap that forms air intake even calm the anger gap band and the even gap band of calming the anger of outlet air end, the even gap band of calming the anger of described air intake is communicated with described wind inlet channel, between described stator lateral surface and described rotor medial surface, leave the annulus that forms outer heat dissipation wind channel, the air intake of described outer heat dissipation wind channel is communicated with the even gap band of calming the anger of each respective end respectively with outlet air end, described main shaft is provided with the spindle hole of main that forms Spindle's heat emission air channel, on the sidewall at described spindle hole of main two ends, be respectively equipped with air intake main shaft side opening and outlet air end main shaft side opening, one end of described air intake main shaft side opening is communicated with the spindle hole of main of described air intake, the other end is communicated with the even gap band of calming the anger of described air intake, one end of described outlet air end main shaft side opening is communicated with the spindle hole of main of described outlet air end, the other end is communicated with the even gap band of calming the anger of described outlet air end, the air intake shutoff of described spindle hole of main, the spindle hole of main that is provided with induced draft fan or described outlet air end in the spindle hole of main of described outlet air end is connected with induced draft fan.
Beneficial effect of the present invention is: because setting is positioned at the outer heat dissipation wind channel of stator surface (between stator and rotor) and is positioned at the Spindle's heat emission air channel of main shaft, can carry out air blast cooling by induced draft fan, greatly improved thus radiating effect, greatly improved heat-sinking capability, effectively avoided the too high negative effect that motor is produced of temperature rise, made the adaptability of motor stronger, the moment of torsion output of adaptation is higher, application is wider, more can under adverse circumstances, work; Because the two ends of each heat dissipation wind channel are provided with the shared even gap band of calming the anger, not only realized the connection between each air channel, and by these even even pressure effects of calming the anger in gap band, be conducive to each heat dissipation wind channel and same heat dissipation wind channel everywhere between the equilibrium of air-flow, improve radiating effect; Because corresponding heat dissipation wind channel is arranged on motor internal, do not take the motor external space, there is the advantages such as little, disguised strong, the energy-saving and environmental protection of volume, ensuring smooth transmission are stable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is section structure schematic diagram of the present invention.
Embodiment
As depicted in figs. 1 and 2, the invention discloses the two cooling motors of a kind of axle and stator, comprise stator and rotor 1, described stator consists of stator core 2 and the winding 3 being arranged in stator core, described stator core is fixedly mounted on main shaft 4, described rotor is external rotor, the air intake of described external rotor and outlet air end are fixedly connected with respectively fixed disk 5 separately, the fixed disk of described each end respectively rotor bearing 6 by is separately rotatably connected with described main shaft, the fixed disk of described air intake is provided with wind inlet channel 7, between the air intake of described stator and outlet air end and the fixed disk of each corresponding end, leave respectively the gap that forms air intake even calm the anger gap band and the even gap band of calming the anger of outlet air end, the even gap band of calming the anger of described air intake is communicated with described wind inlet channel, between described stator lateral surface and described rotor medial surface, leave the annulus that forms outer heat dissipation wind channel 8, the air intake of described outer heat dissipation wind channel is communicated with the even gap band of calming the anger of each respective end respectively with outlet air end, described main shaft is provided with the spindle hole of main that forms Spindle's heat emission air channel 9, on the sidewall at described spindle hole of main two ends, be respectively equipped with air intake main shaft side opening 10 and outlet air end main shaft side opening 11, one end of described air intake main shaft side opening is communicated with the spindle hole of main of described air intake, the other end is communicated with the even gap band of calming the anger of described air intake, one end of described outlet air end main shaft side opening is communicated with the spindle hole of main of described outlet air end, the other end is communicated with the even gap band of calming the anger of described outlet air end, the air intake of described spindle hole of main is by closure plate 12 shutoff, the spindle hole of main that is provided with induced draft fan 13 or described outlet air end in the spindle hole of main of described outlet air end is connected with induced draft fan.After induced draft fan starts, the wind inlet channel of cool exterior air from air intake fixed disk enters the even gap band of calming the anger of this end, a part enters the even gap band of calming the anger of outlet air end after outer heat dissipation wind channel, then the main shaft side opening by respective end enters spindle hole of main, another part enters the spindle hole of main of this end through the main shaft side opening of air intake, along spindle hole of main, flow into outlet air end, two parts air stream converges in outlet air end spindle hole of main, through induced draft fan, send main shaft, form thus the air blast cooling to stator outer surface and main shaft inside, realize thus the object of high effect forced heat radiation.In addition, above-mentioned outer heat dissipation wind channel, even calm the anger gap band and spindle hole of main can be all respective clearance under existing motor and the spindle hole of main of hollow, are conducive to simplified structure.
Preferably, in described stator core, be provided with axial (direction that is parallel to main-shaft axis) through hole of heat dissipation wind channel 14 in forming, the air intake of described interior heat dissipation wind channel and outlet air end are communicated with the even gap band of calming the anger of respective end respectively, increase thus the air blast cooling to stator interior, further improved significantly cooling effect.
Conventionally, described stator core is comprised of the stacked stator punching vertically of some same structures, in the case, preferably, described stator punching upper punch is shaped with some heat dissipation wind channels hole, described interior heat dissipation wind channel consists of the corresponding heat dissipation wind channel hole on described each stator punching, can, in the situation that substantially not increasing processing technology or technology difficulty, form required interior heat dissipation wind channel thus.
Preferably, the some heat dissipation wind channels hole on described stator punching distributes along same even circumferential, thus can balanced radiating effect everywhere.When needs arrange multilayer heat dissipation wind channel hole, the some heat dissipation wind channels hole on described stator punching can be along a plurality of circle distribution, and some heat dissipation wind channels hole of each circumference is uniformly distributed.
Preferably, the shape that is distributed in the some heat dissipation wind channels hole on same circumference on described stator punching is identical with size, be and take the arc strip hole that the center of described stator punching is the center of circle, can guarantee thus effectively to improve in the situation of stator core intensity the area of dissipation in air channel.
Preferably, the distance of this stator punching inward flange of the heat dissipation wind channel pitch-row on described stator punching (being positioned at the edge of central spindle mounting hole) is less than apart from the outer peripheral distance of this stator punching, outside comprehensive, heat dissipation wind channel and interior heat dissipation wind channel effect in the situation that, improve overall radiating efficiency and heat-sinking capability thus.
Preferably, described wind inlet channel is the through hole of air intake fixed disk described in axial penetration, with simplified structure, reduces windage and raises the efficiency, and the preferred circular hole of described through hole, with further simplified processing process.
Preferably, the quantity of described wind inlet channel is a plurality of, to realize balanced air intake, optimization airflow tissue.
Preferably, described a plurality of wind inlet channels are along a circumference or a plurality of circle distribution, and a plurality of wind inlet channels that distribute on described same circumference are uniform.When the negligible amounts of wind inlet channel, can, along a circle distribution, be conducive to simplified structure, when fixed disk area (being mainly rotor-end area) is larger, can increase the quantity of wind inlet channel and be distributed on a plurality of circumference, to make air intake more even, and being conducive to reduce windage.
Preferably, the main shaft side opening cross-sectional flow area of described air intake is less than the cross-sectional flow area of the main shaft side opening of described outlet air end, thus can balance through air stream and the windage between the air stream in Spindle's heat emission air channel of outer heat dissipation wind channel and interior heat dissipation wind channel, the flow that regulates each corresponding air channel, improves radiating effect.
Conventionally, the main shaft side opening of described air intake can be for one or more, and the quantity of the main shaft side opening of described outlet air end also can be for one or more, to consider according to the actual requirements the requirement of designs simplification and air-flow equilibrium and reduction windage.
Preferably, a plurality of main shaft side openings of described air intake are distributed on the annular sidewall of one or more cross sections of air intake main shaft, a plurality of main shaft side openings that are distributed on the annular sidewall of the same cross section of described main shaft are uniformly distributed on the annular sidewall of this cross section, with optimization airflow, reduce windage, convenient processing.
Conventionally, described spindle hole of main and each main shaft side opening are preferably circular hole, so that processing.
The present invention is adapted to the crane hoisting mechanism of low-speed big outer-rotor permanent magnet motor and the gearless driving based on this motor especially, described crane hoisting mechanism is usingd the urceolus of external rotor as crane hoisting mechanism, omitted the mechanical reduction gear of existing conventional hoist lifting mechanism, not only simplify the structure, reduce volume, but also improved efficiency and reliability.
For in statement for simplicity, the present invention is to relate to electronic part in the electrical equipments such as the motor under motor general reference ordinary meaning and crane hoisting mechanism.
Claims (10)
1. two cooling motors of an axle and stator, comprise stator and rotor, described stator consists of stator core and the winding that is arranged in stator core, described stator core is fixedly mounted on main shaft, described rotor is external rotor, the air intake of described external rotor and outlet air end are fixedly connected with respectively fixed disk separately, the fixed disk of described each end respectively rotor bearing by is separately rotatably connected with described main shaft, the fixed disk that it is characterized in that described air intake is provided with wind inlet channel, between the air intake of described stator and outlet air end and the fixed disk of each corresponding end, leave respectively the gap that forms air intake even calm the anger gap band and the even gap band of calming the anger of outlet air end, the even gap band of calming the anger of described air intake is communicated with described wind inlet channel, between described stator lateral surface and described rotor medial surface, leave the annulus that forms outer heat dissipation wind channel, the air intake of described outer heat dissipation wind channel is communicated with the even gap band of calming the anger of each respective end respectively with outlet air end, described main shaft is provided with the spindle hole of main that forms Spindle's heat emission air channel, on the sidewall at described spindle hole of main two ends, be respectively equipped with air intake main shaft side opening and outlet air end main shaft side opening, one end of described air intake main shaft side opening is communicated with the spindle hole of main of described air intake, the other end is communicated with the even gap band of calming the anger of described air intake, one end of described outlet air end main shaft side opening is communicated with the spindle hole of main of described outlet air end, the other end is communicated with the even gap band of calming the anger of described outlet air end, the air intake shutoff of described spindle hole of main, the spindle hole of main that is provided with induced draft fan or described outlet air end in the spindle hole of main of described outlet air end is connected with induced draft fan.
2. the two cooling motors of axle as claimed in claim 1 and stator, is characterized in that being provided with the axially extending bore that forms interior heat dissipation wind channel in described stator core, and the air intake of described interior heat dissipation wind channel and outlet air end are communicated with the even gap band of calming the anger of respective end respectively.
3. two cooling motors of axle as claimed in claim 2 and stator, it is characterized in that described stator core is comprised of the stacked stator punching vertically of some same structures, described stator punching upper punch is shaped with some heat dissipation wind channels hole, and described interior heat dissipation wind channel consists of the corresponding heat dissipation wind channel hole on described each stator punching.
4. two cooling motors of axle as claimed in claim 3 and stator, it is characterized in that the some heat dissipation wind channels hole on described stator punching distributes along an even circumferential, or the some heat dissipation wind channels hole on described stator punching is along a plurality of circle distribution, and the some heat dissipation wind channels hole being distributed on same circumference is uniformly distributed on this circumference.
5. two cooling motors of axle as claimed in claim 4 and stator, is characterized in that being distributed on described stator punching the shape in the some heat dissipation wind channels hole on same circumference and big or small identical, are to take the arc strip hole that the center of described stator punching is the center of circle.
6. the two cooling motors of axle as claimed in claim 5 and stator, is characterized in that the distance of this stator punching inward flange of heat dissipation wind channel pitch-row on described stator punching is less than apart from the outer peripheral distance of this stator punching.
7. two cooling motors of the axle as described in claim 1,2,3,4,5 or 6 and stator, is characterized in that described wind inlet channel is the through hole of air intake fixed disk described in axial penetration.
8. two cooling motors of axle as claimed in claim 7 and stator, the quantity that it is characterized in that described wind inlet channel is a plurality of.
9. the two cooling motors of axle as claimed in claim 8 and stator, is characterized in that described a plurality of wind inlet channel is along a circumference or a plurality of circle distribution, and a plurality of wind inlet channels that distribute on described same circumference are uniform.
10. two cooling motors of axle as claimed in claim 9 and stator, it is characterized in that the main shaft side opening cross-sectional flow area of described air intake is less than the cross-sectional flow area of the main shaft side opening of described outlet air end, the quantity of the main shaft side opening of described air intake and the main shaft side opening of described outlet air end is respectively one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410414156.4A CN104158347A (en) | 2014-08-21 | 2014-08-21 | Shaft and stator double cooling motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410414156.4A CN104158347A (en) | 2014-08-21 | 2014-08-21 | Shaft and stator double cooling motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104158347A true CN104158347A (en) | 2014-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410414156.4A Pending CN104158347A (en) | 2014-08-21 | 2014-08-21 | Shaft and stator double cooling motor |
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| Country | Link |
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| CN (1) | CN104158347A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429728A (en) * | 2019-08-15 | 2019-11-08 | 兰州电机股份有限公司 | A kind of permanent magnetic brushless servomotor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191509477A (en) * | 1914-06-30 | 1915-08-19 | Frankfurter Maschb Ag Vormals | Improved Means for Cooling Electrically-operated Tools. |
| JP2006230155A (en) * | 2005-02-21 | 2006-08-31 | Toshiba Corp | Dynamo-electric machine |
| CN101944813A (en) * | 2010-09-26 | 2011-01-12 | 沈阳工业大学 | Outer rotor direct-drive permanent magnet synchronous motor for belt conveyer |
-
2014
- 2014-08-21 CN CN201410414156.4A patent/CN104158347A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191509477A (en) * | 1914-06-30 | 1915-08-19 | Frankfurter Maschb Ag Vormals | Improved Means for Cooling Electrically-operated Tools. |
| JP2006230155A (en) * | 2005-02-21 | 2006-08-31 | Toshiba Corp | Dynamo-electric machine |
| CN101944813A (en) * | 2010-09-26 | 2011-01-12 | 沈阳工业大学 | Outer rotor direct-drive permanent magnet synchronous motor for belt conveyer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429728A (en) * | 2019-08-15 | 2019-11-08 | 兰州电机股份有限公司 | A kind of permanent magnetic brushless servomotor |
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Application publication date: 20141119 |
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