CN104578596B - A kind of processing method of motor and its stator structure - Google Patents
A kind of processing method of motor and its stator structure Download PDFInfo
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- CN104578596B CN104578596B CN201510033022.2A CN201510033022A CN104578596B CN 104578596 B CN104578596 B CN 104578596B CN 201510033022 A CN201510033022 A CN 201510033022A CN 104578596 B CN104578596 B CN 104578596B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/187—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to inner stators
-
- 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
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
- H02K2205/09—Machines characterised by drain passages or by venting, breathing or pressure compensating means
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a kind of motor, the inner surface of the stator core of the motor is packaged with insulating sleeve (11), its two sides and is packaged with side wall (12), the housing of the insulating sleeve (11), two side walls (12) and the motor forms annular seal space (13), and annular seal space (13) bottom is packaged with to be flooded the evaporative cooling medium (17) of the stator core, top and be provided with the condenser pipe (14) for axially penetrating through the annular seal space (13)；Air gap (3) between the stator core and rotor of the motor is wedged air gap (3), and the rotor core (2) is provided with least one air duct for axially penetrating through (21)；The stator core is additionally provided with least one ventilation duct (15) for axially penetrating through the annular seal space (13).The motor of this structure can strengthen the cooling effect to rotor.Additionally, the invention also discloses a kind of processing method of the stator structure of motor, with constructed effect.
Description
Technical field
The present invention relates to technical field of motors, more particularly to a kind of motor and its stator structure processing method.
Background technology
Threephase asynchronous, switched reluctance machines etc. belong to smelting, mine, machinery, weaving, aviation, household electrical appliance, vapour
Highly important driving equipment in the wide spectrums such as car, (i.e. the rotating shaft of stator and rotor iron core is horizontal positioned to belong to horizontal type structure
), it is most of to be in continuously-running duty.
The heat generating components of motor focuses primarily upon stator and rotor, from the point of view of motor cooling technology at this stage, evaporates cold
But technology can solve the problem that the stator cooling problem of heating most serious, and the heat generating components of remaining part focuses primarily upon the rotor of rotation
Iron core and winding (switched reluctance machines are without rotor windings).If rotor cooling solution is bad, motor still can be badly influenced
Normal operation.
Problem on rotor cooling, the patent of Application No. 201010536084.2 discloses a kind of preferable engine
Air cooling structure, (in order to clearly show that airflow direction, the width of air gap is exaggerated several times by the figure) as shown in Figure 1, the motor
Stator core 1 ', rotor 2 ' between air gap 3 ' it is interior place an insulating sleeve 11 ', it is interior that the sleeve is close to stator core 1 '
Wall, with the surface of rotor 2 ' at a distance from the rotation of, it is ensured that the normal reliable of rotor 2 ' ground, then respectively increases at the two ends of stator core 1 '
One side wall 12 ', the assembling of insulating sleeve 11 ' with the inner surface of stator core 1 ' is integral, and then is formed stator core 1 ' is whole
Body annular seal space 13 '.Several condenser pipes 14 ', condenser pipe are circumferentially evenly arranged on the top of the annular seal space 13 ' of stator core 1 '
14 ' side the walls 12 ' for passing across the body of annular seal space 13 ' two ends, firmly weld together in contact position, then condenser pipe 14 ' is divided into
Two parts, a part positioned at stator core 1 ' annular seal space 13 ' in vivo, a part is located at that the annular seal space 13 ' is external, motor case
4 ' is interior, and two side outlets of condenser pipe 14 ' are communicated with the external world.
Before motor operation, it is fixed that the evaporative cooling medium 15 ' under normal temperature for liquid is entered from the valve tank positioned at support bottom
The annular seal space 13 ' of sub- iron core 1 ' is interior, and topping up face there was not the outer wall of stator core 1 ', as shown in Figure 1, it is ensured that stator core 1 ' is overall
It is completely soaked, topping up face also needs to leave the evaporating space in enough space lengths, i.e. thermal conduction study between condenser pipe 14 '.
In motor operation course, stator core 1 ' is overall because various losses produce substantial amounts of heat, and the evaporation cooling that heated in cavity is situated between
Matter 15 ', medium is constantly absorbed heat, and temperature is constantly raised, and come to life heat exchange when boiling temperature is reached, and now absorbs the energy of heat
Power is most strong, is constantly risen because density diminishes in gaseous medium after boiling, the condenser pipe 14 ' on top is run into, with condensation
After the interior extraneous cold wind (or water) of pipe 14 ' carries out heat exchange, medium is condensed into liquid again, from the outer wall of condenser pipe 14 ' drippage
Return liquid surface, so can continuously by outside air in evaporative cooling medium 15 ' and condenser pipe 14 ' (or
Water), the heat that stator core 1 ' is sent is scattered to the outside of motor in time, forms self-loopa evaporation cooling procedure.
After the seal sleeve 11 ' of said stator iron core 1 ' is close to the internal diameter of stator core 1 ', what is formed between rotor 2 ' is
Wedged air gap 3 ' of the taper no more than 5 °, as illustrated by the arrows in fig. 1, the wedged air gap 3 ' causes electric motor internal stator iron core 1 ' close
Air-flow beyond the envelope body of chamber 13 ' flows to big mouth by the osculum of wedged air gap 3 ', then flow back into rotor 2 ' by top condenser pipe 14 '
On air duct 21 ', again by coming back to the osculum end of wedged air gap 3 ' after condenser pipe 14 ' after outflow air duct 21 '.
Even if so, above-mentioned air cooling structure or undesirable, reason is following two aspects：
Firstth, the hot blast for flowing out from the big opening end of wedged air gap 3 ' is only by the very short by of the both sides of top condenser pipe 14 '
Section, the efficiency that heat exchange is carried out between condenser pipe 14 ' is not high；
Secondth, because stator core 1 ' uses integral sealing, the crosswind of stator core 1 ' road is all blocked, then after the cooling
Wind the osculum end of wedged air gap 3 ' can only be flowed back to from the air duct 21 ' on the rotor 2 ', could circulate.And rotor 2 '
Be rotation at a high speed, cause air duct 21 ' to rotate at a high speed, have influence on the formation of exhausting pressure head so that wind after cooling can not and
When be all extracted into that air duct 21 ' is interior, and then have influence on the size of wind speed and the circulating effect of wind.
In view of this, it would be highly desirable to for above-mentioned technical problem, further optimization design is done to motor of the prior art, enter one
Step improves the cooling effect to rotor.
The content of the invention
To provide a kind of motor, the motor can improve electricity to the purpose of the present invention by the axial ventilation pipe opened up on its stator
The cooling effect of machine rotor.Another object of the present invention is to provide a kind of processing method of the stator structure of motor.
In order to solve the above technical problems, the present invention provides a kind of motor, the inner surface encapsulation of the stator core of the motor
There are insulating sleeve, its two sides to be packaged with side wall, the housing of the insulating sleeve, two side walls and the motor forms close
Envelope chamber, the annular seal space bottom be packaged with flood the evaporative cooling medium of the stator core, top be provided with axially penetrate through it is described
The condenser pipe of annular seal space；Air gap between the stator core and rotor of the motor is wedged air gap, and the rotor core is provided with
At least one air duct for axially penetrating through；The stator core is additionally provided with least one ventilation for axially penetrating through the annular seal space
Pipe.
Using said structure, after seal stator, the insulating sleeve of its sealing is close on stator inner surface, outside rotor
Surface forms wedged air gap of the taper no more than 5 °, theoretical according to fluid motion theory and coriolis force, in the wedged air gap
Generation is flowed to the blast of big opening end by osculum end.During electric motor starting with operation, rotor produces heat, and the wind in casing is by this
The osculum end of wedged air gap flows to the heat that rotor is absorbed during big opening end, and at the same time, wind in casing can also be from
The osculum end of rotor ventilation ditch flows to its big opening end, and becomes temperature hot blast higher at big mouth air outlet.From wedged air gap
The hot blast of outflow, is divided into two parts：
For the top half of rotating shaft, after rising the ventilation duct for running into stator side because hot blast density is small, by the ventilation duct
The draught head of both sides, is pressed into the ventilation duct of stator side, and the position without rising to condenser pipe again is cooled down, and hot blast enters fixed
After the ventilation duct of sub- side, because the ventilation duct is on stator core, cooling is just evaporated by the liquid in seal stator cavity
Medium soaks, then the hot blast in the ventilation duct carries out sufficient heat exchange, ventilation duct stream with the liquid evaporative cooling medium outside pipe
The wind for going out is flowed back at the osculum end of wedged air gap and rotor ventilation ditch again again.
For the latter half of rotating shaft, although the density of hot blast is small, the hot blast of some is moved upwards, due to
Stator side ventilation duct both sides formed pressure difference it is larger, along with hot blast from wedged air gap and rotor ventilation ditch be thrown out of after be subject to compared with
The effect of big centrifugal force, still has the hot blast of most to be drawn towards being located in the stator side ventilation duct below rotor, from this
The major part of the wind after ventilation duct outflow moves the wedged air gap and rotor that also some is flowed back to below armature spindle upwards
At the osculum end of air duct.
Substantial amounts of experimental test result shows, the hot blast temperature after being heated by rotor often between 70 °~90 DEG C, stator
The temperature of the liquid evaporative cooling medium in seal cavity is typically maintained in 50 DEG C or so, and such hot blast is by its heat transfer to liquid
State evaporative cooling medium, the temperature of the wind after the ventilation duct of outflow stator side is general between 50 °~60 DEG C, the major part of these wind
Rise at the condenser pipe of top, then heat exchange is carried out with condenser pipe, the wind after cooling flow back into the small of wedged air gap along casing
Mouth end, the osculum end of air duct, the temperature for having arrived the wind of this position are general between 30 °~35 DEG C, then enter back into next
Secondary flowing, so constantly circulation is got up so that the wind in casing is circulated all the time, realizes that rotor-side is cooled down.
Although also the wind of part does not reach the condenser pipe of topmost for the moment, because rotor is constantly to rotate at a high speed
, air duct and the position of wedged air gap on rotor are also change at a high speed, so, between the heat of hot blast is in not in casing
In the state disconnectedly taken away by evaporative cooling medium and condenser pipe, its wind speed will be at least than structure of the prior art with wind flow
Big 3 times, cooling effect is fairly obvious.
Preferably, the ventilation duct is located in the yoke portion of the stator core.
Preferably, to laminate iron core, the iron core that laminates is provided with axial ventilation passage, the ventilation duct to the stator core
Suit is fixed in the vent passages.
Preferably, the wall thickness of the ventilation duct is less than or equal to 2mm.
Preferably, the ventilation duct is copper pipe or earthenware.
Preferably, the number of the ventilation duct is multiple, and multiple ventilation ducts are same along the stator core end face
Even circumferential is distributed；The number of the air duct is also multiple, and multiple air ducts are same along the rotor core end face
Even circumferential is distributed.
The present invention also provides a kind of processing method of the stator structure of motor, comprises the following steps：
At least one air vent is processed on stator lamination；Multiple stator lamination correspondences are laminated to form stator
Iron core, multiple air vents are spliced to form vent passages；
Preset ventilation duct corresponding with the vent passages, by the ventilation duct insert in the vent passages and with
Be fixedly connected；
Distinguish branch sleeve, side wall in the stator core inner surface, side wall to form stator module, then by the stator
Component is in casing and default condenser pipe, casing form annular seal space.
Preferably, the ventilation duct is welded in one with the vent passages.
Preferably, the wall thickness of the ventilation duct is less than or equal to 2mm.
Preferably, the ventilation duct is copper pipe or earthenware.
Because above-mentioned motor has as above technique effect, therefore, the processing method of stator structure corresponding with the motor
There should be corresponding technique effect, will not be repeated here.
Brief description of the drawings
Fig. 1 is the structural representation of rotor air cooling structure disclosed in patent CN201010536084 and wind direction flow distribution
Figure；
Fig. 2 is the structural representation and wind direction flow distribution figure of a kind of specific embodiment of motor provided by the present invention；
Fig. 3 is the structural representation of the stator lamination of motor in Fig. 2；
Fig. 4 is the installation diagram of stator core and the ventilation duct after stator lamination is laminated in Fig. 3；
Fig. 5, Fig. 6 are respectively the front view of ventilation duct shown in Fig. 4, side view；
Fig. 7 is the side wall figure of encapsulated stator iron core in Fig. 2；
Fig. 8 is a kind of flow chart element of specific embodiment of the processing method of the stator structure of motor provided by the present invention
Figure.
Wherein, the corresponding relation between the reference and component names in Fig. 1 is：
Stator core 1 '；Sleeve 11 '；Side wall 12 '；Annular seal space 13 '；Condenser pipe 14 '；Evaporative cooling medium 15 '；
Rotor 2 '；Air duct 21 '；
Air gap 3 '；
Casing 4 '；
The corresponding relation between reference and component names shown in Fig. 2 to Fig. 8 is：
Sleeve 11；Side wall 12；Condenser pipe mounting hole 121；Ventilation duct mounting hole 122；Sleeve mounting hole 123；Annular seal space 13；
Condenser pipe 14；Ventilation duct 15；Vent passages 16；Evaporative cooling medium 17；
Rotor core 2；Air duct 21；Stator yoke 22；
Air gap 3；
Casing 4.
Specific embodiment
To provide a kind of motor, the motor can improve electricity to core of the invention by the axial ventilation pipe opened up on its stator
The cooling effect of machine rotor.Another core of the invention is to provide a kind of processing method of the stator structure of motor.
In order that those skilled in the art more fully understands technical scheme, it is below in conjunction with the accompanying drawings and specific real
The present invention is described in further detail to apply example.
Fig. 2 is refer to, Fig. 2 is the structural representation and wind direction stream of a kind of specific embodiment of motor provided by the present invention
Dynamic distribution map (in order to clearly show that wind direction flows, air gap is exaggerated several times).
In a kind of specific embodiment, as shown in Fig. 2 the present invention provides a kind of motor, stator core (Fig. 2 of motor
It is middle to be flooded by evaporative cooling medium) inner surface be packaged with insulating sleeve 11, its two sides and be packaged with side wall 12, insulating sleeve
11st, two side walls 12 and motor housing formed annular seal space 13, the bottom of annular seal space 13 be packaged with flood stator core evaporation it is cold
But medium 17, top is provided with the condenser pipe 14 for axially penetrating through annular seal space 13.Air gap 3 between the stator core and rotor of motor is
Wedged air gap 3, rotor core 2 is provided with least one air duct 21 for axially penetrating through, and stator core is additionally provided with least one axially
Through the ventilation duct 15 of annular seal space 13.
Using said structure, after seal stator, the insulating sleeve 11 of its sealing is close on stator inner surface, with rotor
Outer surface forms wedged air gap 3 of the taper no more than 5 °, theoretical according to fluid motion theory and coriolis force, in the wedged air gap
The blast that big opening end is flowed to by osculum end is produced in 3.During electric motor starting with operation, rotor produces heat, the wind in casing 4
The heat of rotor is absorbed during flowing to big opening end by the osculum end of the wedged air gap 3, at the same time, the wind in casing 4 is also
Its big opening end can be flowed to from the osculum end of rotor ventilation ditch 21, and become temperature hot blast higher at big mouth air outlet, such as
Shown in Fig. 2.From the hot blast of the outflow of wedged air gap 3, it is divided into two parts to describe：
For the top half of rotating shaft, Fig. 2 is seen, after rising the ventilation duct 15 for running into stator side because hot blast density is small, by
The draught head of the both sides of ventilation duct 15, is pressed into the ventilation duct 15 of stator side, and the position without rising to condenser pipe 14 again is carried out
Cooling, after hot blast enters the ventilation duct 15 of stator side, because the ventilation duct 15 is on stator core, just by seal stator chamber
Liquid evaporative cooling medium 17 in 13 bodies soaks, then the hot blast in the ventilation duct 15 and the liquid evaporative cooling medium 17 outside pipe
Sufficient heat exchange is carried out, the wind of the outflow of ventilation duct 15 is flowed back at the osculum end of wedged air gap 3 and rotor ventilation ditch 21 again again.
For the latter half of rotating shaft, Fig. 2 is seen, although the density of hot blast is small, the hot blast of some is moved upwards,
It is because the pressure difference of the both sides of stator side ventilation duct 15 formation is larger, along with hot blast from wedged air gap 3 and the quilt of rotor ventilation ditch 21
Acted on by larger centrifugal force after throwing away, the stator side for still having the hot blast of most to be drawn towards being located at below rotor is led to
In airduct 15, from the ventilation duct 15 outflow after wind major part upwards motion also some flow back to below armature spindle
At the osculum end of wedged air gap 3 and rotor ventilation ditch 21.
Substantial amounts of experimental test result shows, the hot blast temperature after being heated by rotor often between 70~90 DEG C, stator
The temperature of the liquid evaporative cooling medium 17 in the body of annular seal space 13 is typically maintained in 50 DEG C or so, and such hot blast is by its heat transfer
To liquid evaporative cooling medium 17, the temperature of the wind after outflow stator side ventilation duct 15 is general between 50~60 DEG C, and the wind is big
Part is risen at top condenser pipe 14, as shown in Figure 2, then carries out heat exchange with condenser pipe 14, and the wind after cooling is along casing 4
Osculum end, the osculum end of air duct 21 of wedged air gap 3 are flow back into, the temperature for having arrived the wind of this position is general at 30~35 DEG C
Between, then enter back into and flow next time, so constantly circulation is got up so that the wind in casing 4 is circulated all the time, real
Existing rotor-side cooling.
Although also the wind of part does not reach the condenser pipe 14 of topmost for the moment, Fig. 2 is seen, because rotor is not broken height
Speed rotation, air duct 21 and the position of wedged air gap 3 on rotor are also change at a high speed, so, the heat of hot blast in casing 4
In state of the amount in being taken away by evaporative cooling medium 17 and condenser pipe 14 incessantly, its wind speed compares prior art with wind flow
In structure it is at least big 3 times, cooling effect is fairly obvious.
In said structure, in order to further enhance the effect of gas flowing, air duct 21 can be set to wedge-shaped ventilation
Ditch, wedge-shaped ventilation duct is set to by ventilation duct 15, and the big mouth, osculum direction and wedged air gap 3 of wedge-shaped air duct big mouth, osculum
Direction is identical, and the big mouth of wedge-shaped ventilation duct, the big mouth in osculum direction and wedged air gap, osculum are in opposite direction.It is contemplated that above-mentioned
Air duct 21 simultaneously not only limits wedge shape, ventilation duct 15 and also and not only limits wedge shape, for the simplification to processing technology and production cost
Consider, it is also possible to which air duct 21, ventilation duct 15 are set to cylindrical structural.
The set-up mode of above-mentioned ventilation duct 15 and rotor ventilation ditch 21 can have varied.
In specific scheme, as shown in figure 3, Fig. 3 is the structural representation of the stator lamination of motor in Fig. 2；It is above-mentioned logical
Airduct 15 can be located in the stator yoke 22 of stator core.
Ventilating duct is located at stator yoke 22, it is necessary to the perforate in stator yoke, and stator is main group of motor internal magnetic circuit
Into part, than more uniform, than other positions, such as stator teeth is small for the only magnetic flux distribution of stator yoke 22, so
Perforate slightly has influence for original magnetic flux distribution in stator yoke 22, and influence is little.And if ventilation duct 15 is located at into stator
On tooth, then can be very big to magnetic flux effect, cause field distortion, serious supersaturation.Ventilation duct is located at another in stator yoke
One reason is that the evaporative cooling medium 17 in the body of annular seal space 13 did not just have whole stator, can so ensure that air channel is complete
In liquid evaporation cooling medium 17, sufficient heat exchange is carried out with the medium.If the position of ventilation duct 15 is again up,
Gaseous medium, it is also possible to carry out heat exchange with air channel higher than the liquid level of liquid medium, simply with towards the external world of casing 4,
Mix with the condensation ventilation duct 15 of gaseous medium heat exchange, it is unfavorable to be condensed for gaseous medium, and its cooling effect is not good.If
The position of ventilation duct 15 down, then can conflict with the position of stator slot again.
Certainly, above-mentioned ventilation duct 15 and not only limit located at stator core stator yoke 22 on, magnetic can also be located at
Other slightly larger positions of flux density.
In specific scheme, as shown in figure 4, Fig. 4 is the stator core and ventilation duct after stator lamination is laminated in Fig. 3
Installation diagram；Said stator iron core can be to laminate iron core, laminate iron core and be provided with axial ventilation passage 16, and the suit of ventilation duct 15 is fixed
In vent passages 16.
Using this structure, ventilation duct 15, and the integral type ventilation duct simply, easily can be set in iron core is laminated
15 leakages that can well prevent evaporative cooling medium 17.It is contemplated that above-mentioned ventilation duct 15 and not only limiting this structure, may be used also
So that directly vent passages 16 to be used as ventilation duct 15.
More specifically in scheme, as shown in Figure 5, Figure 6, Fig. 5, Fig. 6 are respectively the front view of ventilation duct shown in Fig. 4, side-looking
Figure, the wall thickness of above-mentioned ventilation duct 15 is less than or equal to 2mm.
This less wall thickness causes to be easy to the gas of the flowing in ventilation duct 15 fully to be exchanged with evaporative cooling medium 17
Heat.Its wall thickness can specifically be set to 1mm, or other numerical value.
Additionally, above-mentioned ventilation duct 15 can be copper pipe or earthenware.
Because copper, ceramics are thermal conductivity factor material higher, therefore, using copper or ceramics as ventilation duct 15 material,
The heat-exchange capacity of ventilation duct 15 can be further enhanced.
More specifically, as shown in fig. 7, Fig. 7 is the side wall figure of encapsulated stator iron core in Fig. 2；The top of the side wall 12 is provided with
Multiple condenser pipe mounting holes 121, middle part are provided with sleeve mounting hole 123, are being provided with multiple logical with the corresponding position of stator yoke 22
Airduct mounting hole 122, namely the number of ventilation duct 15 is multiple, multiple ventilation ducts 15 are equal along the same circumference of stator core end face
Even distribution.
Using this structure, the multiple ventilation ducts 15 being uniformly distributed along the circumference ensure that what is flowed out from air gap 3, air duct 21
Hot blast is uniform, pass through to big flow, so as to ensure the stability of air cooling.Certainly, ventilation duct 15 limits also and not only this set
Mode, it is also possible to which setting of radially mutually staggering, its number can be specially 16, it would however also be possible to employ other numbers.
The like, the number of above-mentioned air duct 21 is multiple, multiple air ducts 21 along the end face of rotor core 2 same circle
Week is uniformly distributed.
So, uniform multiple air ducts 21 can uniformly, big flow take away the heat produced when rotor is rotated, its tool
Body number can be obtained according to the number of air gap 3 and flow, the number of ventilation duct 15 and flow rate calculation.
Additionally, refer to Fig. 8, Fig. 8 is a kind of specific reality of the processing method of the stator structure of motor provided by the present invention
Apply the FB(flow block) of mode.
The present invention also provides a kind of processing method of the stator structure of motor, comprises the following steps：
S11：At least one air vent is processed on stator lamination；Multiple stator laminations correspondence is laminated to form stator
Iron core, multiple air vents are spliced to form vent passages；
S12：Ventilation duct 15 corresponding with vent passages is preset, ventilation duct 15 is inserted in vent passages and solid therewith
Fixed connection；
Above-mentioned two step realizes the technique that ventilation duct 15 is processed on stator core.Wherein, ventilation duct 15 can have
Body is welded in one with vent passages, and certainly, the two is fixedly connected and not only limits this connected mode, it would however also be possible to employ interference is matched somebody with somebody
The connected modes such as conjunction.
In concrete scheme, can be set to the wall thickness of ventilation duct 15 less than or equal to 2mm by the above method.This less wall
Thickness causes to be easy to the gas of flowing and the abundant heat-shift of evaporative cooling medium 17 in ventilation duct 15.Its wall thickness can specifically set
It is 1mm, or other numerical value.
In another concrete scheme, above-mentioned ventilation duct 15 can be specially copper pipe or earthenware.Led because copper, ceramics are
Hot coefficient material higher, therefore, using copper or ceramics as the material of ventilation duct 15, the heat of ventilation duct 15 can be further enhanced
Exchange capacity.
S13：Distinguish branch sleeve, side wall 12 in stator core inner surface, side wall 12 to form stator module, then by stator
Component is installed in casing 4, the housing of 11, two side walls 12 of insulating sleeve and motor is formed annular seal space 13, and in annular seal space
The evaporative cooling medium 17, top that stator core is flooded in the encapsulation of 13 bottoms is provided with the condenser pipe 14 for axially penetrating through annular seal space 13.
The step realizes the process that stator core forms annular seal space 13 with casing 4, condenser pipe 14.Due to annular seal space 13
Through being structure of the prior art, its process will not be repeated here.
The above method realizes the sealing structure of stator, and the ventilation for axially penetrating through annular seal space 13 is set on stator core
Pipe 15, the stator can be installed with the rotor engagement with air duct 21, and the air gap 3 between stator and rotor is set to
Wedged air gap 3.So, during electric motor starting with operation, rotor produces heat, wind in casing 4 by wedged air gap 3 osculum
End absorbs the heat of rotor during flowing to big opening end, at the same time, the wind in casing 4 can also be from rotor ventilation ditch 21
Osculum end flows to its big opening end, and becomes temperature hot blast higher at big mouth air outlet.From the hot blast of the outflow of wedged air gap 3,
It is divided into two parts to describe：
For the top half of rotating shaft, Fig. 2 is seen, after rising the ventilation duct 15 for running into stator side because hot blast density is small, by
The draught head of the both sides of ventilation duct 15, is pressed into the ventilation duct 15 of stator side, and the position without rising to condenser pipe 14 again is carried out
Cooling, after hot blast enters the ventilation duct 15 of stator side, because the ventilation duct 15 is on stator core, just by seal stator chamber
Liquid evaporative cooling medium 17 in 13 bodies soaks, then the hot blast in the ventilation duct 15 and the liquid evaporative cooling medium 17 outside pipe
Sufficient heat exchange is carried out, the wind of the outflow of ventilation duct 15 is flowed back at the osculum end of wedged air gap 3 and rotor ventilation ditch 21 again again.
For the latter half of rotating shaft, Fig. 2 is seen, although the density of hot blast is small, the hot blast of some is moved upwards,
It is because the pressure difference of the both sides of stator side ventilation duct 15 formation is larger, along with hot blast from wedged air gap 3 and the quilt of rotor ventilation ditch 21
Acted on by larger centrifugal force after throwing away, the stator side for still having the hot blast of most to be drawn towards being located at below rotor is led to
In airduct 15, from the ventilation duct 15 outflow after wind major part upwards motion also some flow back to below armature spindle
At the osculum end of wedged air gap 3 and rotor ventilation ditch 21.
Analyzed from the flow direction of above-mentioned hot blast, and shown with reference to substantial amounts of experimental test result, above method processing
The heat that stator can produce rotor is transferred heat in cooling medium by ventilation duct 15, then further by condenser pipe 14
Radiating, most hot blast temperature of the temperature between 70~90 DEG C is down to 30~35 DEG C at last, and comes back to the osculum of wedged air gap 3
End, the osculum end of air duct 21, so constantly circulation, realize the preferable cooling effect of rotor-side.
The technique effect is identical with the technique effect of above-mentioned motor, is no longer described in detail here.
The processing method to a kind of motor provided by the present invention and its stator structure is described in detail above.Herein
In apply specific case principle of the invention and implementation method be set forth, the explanation of above example is only intended to side
Assistant solves the method for the present invention and its core concept.It should be pointed out that for those skilled in the art, not
On the premise of departing from the principle of the invention, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into
In the protection domain of the claims in the present invention.
Claims (10)
1. a kind of motor, the inner surface of the stator core of the motor is packaged with insulating sleeve (11), its two sides and is packaged with side
Wall (12), the housing of the insulating sleeve (11), two side walls (12) and the motor forms annular seal space (13), described close
Envelope chamber (13) bottom is packaged with to be flooded the evaporative cooling medium (17) of the stator core, top and is provided with and axially penetrates through the sealing
The condenser pipe (14) in chamber (13)；Air gap (3) between the stator core and rotor of the motor is wedged air gap (3), described turn
Sub- iron core (2) is provided with least one air duct for axially penetrating through (21)；Characterized in that, the stator core is additionally provided with least one
The individual ventilation duct (15) for axially penetrating through the annular seal space (13).
2. motor according to claim 1, it is characterised in that stator of the ventilation duct (15) positioned at the stator core
In yoke portion (22).
3. motor according to claim 2, it is characterised in that the stator core is described to laminate iron core to laminate iron core
Axial ventilation passage (16) is provided with, ventilation duct (15) suit is fixed in the vent passages (16).
4. motor according to claim 3, it is characterised in that the wall thickness of the ventilation duct (15) is less than or equal to 2mm.
5. motor according to claim 4, it is characterised in that the ventilation duct (15) is copper pipe or earthenware.
6. the motor according to claim any one of 1-5, it is characterised in that the number of the ventilation duct (15) is multiple,
Multiple ventilation ducts (15) are distributed along the same even circumferential of the stator core end face；The number of the air duct (21)
It is multiple, multiple air ducts (21) are distributed along the same even circumferential of the rotor core (2) end face.
7. a kind of processing method of the stator structure of motor, it is characterised in that comprise the following steps：
At least one air vent is processed on stator lamination；Multiple stator lamination correspondences are laminated to form stator iron
Core, multiple air vents are spliced to form vent passages；
Ventilation duct corresponding with the vent passages is preset, the ventilation duct is inserted in the vent passages and solid therewith
Fixed connection；
Distinguish branch sleeve, side wall in the stator core inner surface, side wall to form stator module, then by the stator module
In to casing and default condenser pipe, casing formed annular seal space, be packaged with annular seal space flood the stator core evaporation it is cold
But medium (17).
8. the processing method of the stator structure of motor according to claim 7, it is characterised in that the ventilation duct with it is described
Vent passages are welded in one.
9. the processing method of the stator structure of motor according to claim 8, it is characterised in that the wall thickness of the ventilation duct
Less than or equal to 2mm.
10. the processing method of the stator structure of motor according to claim 9, it is characterised in that the ventilation duct is copper
Pipe or earthenware.
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| CN201510033022.2A CN104578596B (en) | 2015-01-22 | 2015-01-22 | A kind of processing method of motor and its stator structure |
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| CN201510033022.2A CN104578596B (en) | 2015-01-22 | 2015-01-22 | A kind of processing method of motor and its stator structure |
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| CN104578596B true CN104578596B (en) | 2017-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106385122A (en) * | 2016-09-20 | 2017-02-08 | 北京交通大学 | Honeycomb-type closed ventilation cooling device for motor |
| CN108471198B (en) * | 2018-04-26 | 2023-07-28 | 北京建筑大学 | Control method, device and system for switched reluctance motor and controller |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1050949A1 (en) * | 1998-01-21 | 2000-11-08 | Hitachi, Ltd. | Motor |
| CN201887602U (en) * | 2010-11-08 | 2011-06-29 | 肖富凯 | Air cooling structure for a motor and horizontal type motor |
| CN204316260U (en) * | 2015-01-22 | 2015-05-06 | 北京建筑大学 | A kind of motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105122606B (en) * | 2013-04-15 | 2017-12-08 | 三菱电机株式会社 | Electric rotating machine |
-
2015
- 2015-01-22 CN CN201510033022.2A patent/CN104578596B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1050949A1 (en) * | 1998-01-21 | 2000-11-08 | Hitachi, Ltd. | Motor |
| CN201887602U (en) * | 2010-11-08 | 2011-06-29 | 肖富凯 | Air cooling structure for a motor and horizontal type motor |
| CN204316260U (en) * | 2015-01-22 | 2015-05-06 | 北京建筑大学 | A kind of motor |
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| CN104578596A (en) | 2015-04-29 |
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