CN105634210B - The motor of stator closing with the open draft type of rotor is realized using axis circulation wind - Google Patents
The motor of stator closing with the open draft type of rotor is realized using axis circulation wind Download PDFInfo
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- CN105634210B CN105634210B CN201610157490.5A CN201610157490A CN105634210B CN 105634210 B CN105634210 B CN 105634210B CN 201610157490 A CN201610157490 A CN 201610157490A CN 105634210 B CN105634210 B CN 105634210B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/08—Arrangements for cooling or ventilating by gaseous cooling medium circulating wholly within the machine casing
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- Motor Or Generator Cooling System (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention discloses a kind of motor that stator closing with the open draft type of rotor are realized using axis circulation wind, the axis of use has excircle helicla flute, and the identical aerofoil fan composition axis stream combined ventilating device of the hand of spiral for cooperating both ends to be close to, this device is located at internal rotor and two ends of rotor, it is not take up additional motor axial space, so that electric motor structure is compact；Different due to turning to, airflow direction also can be different, but can cool down motor；Cooperation labyrinth seal realizes the cooling combination type of cooling with the open ventilating and cooling of rotor of stator enclosed-ventilated of motor, and this combination type of cooling makes the reliability of stator insulation and rotor heat-sinking capability all be guaranteed, improves electric efficiency；The group of stator cooling air channel becomes (2x), (2h), (6h), the group of rotor cooling air channel becomes (5y), (9b), (4b), (10b), two cooling air channels are serially connected, and are combined the unit jointly by spiral and are provided wind pressure.
Description
Technical field
The present invention relates to industrial application and driving rolling stock totally-enclosed self-ventilation motor.
Background technique
The stator of threephase asynchronous and rotor heating about respectively account for half, and the stator fever of industrial motor is omited than rotor
Height, for rolling stock traction motor due to workload it is big, rotor slip is big, and rotor heating amount can reach overall hair
More than half of heat；
Rolling stock travels on two rail, and 1435 millimeters of standard gauge, traction motor, shaft coupling, gear-box group
At power plant module be just placed in the space of this fixation, while also needing to retain certain daily maintenance to operating personnel and protecting
Support space；The work of rail traffic simultaneously is subjected to the test that various sleet, dust, dust storm corrode in open-air atmosphere, so track is handed over
Being open to traffic to the general requirement of traction motor is that small in size, light-weight, power density is high, and it is strong to resist adverse circumstances ability.
The ventilating and cooling mode of threephase asynchronous is generally divided into open self-ventilation, closed formula self-ventilation, opening
Formula forced ventilation：
1. for existing open self-ventilation motor：Cooled external air is directly through stator and rotor surface, band
Walk most of heat, good cooling results；The disadvantage is that fixed subcoil insulating system is easy to be invaded by extraneous dust, moisture, greasy dirt
Erosion, according to the statistics of international motor association, since stator insulation failure causes the probability of electric motor fails to account for overall three one-tenth
More than, electric motor fails caused by bearing fault are only second to, for open motor, the probability meeting of stator insulation failure occurs
It is higher；
What currently metro industry was commonly used is open self-ventilation traction motor, according to the total of actual use situation
Knot, after motor puts into operation 10 years, stator insulation failure rate be will rise rapidly, the traction motor moon event of single line
Barrier rate is likely to be breached 2~3, and occurs mainly in insulation fault；
It usually needs to install dust removal by filtration device in the air inlet of open self-ventilation traction motor, removes cooling air
In most of dust.Dust removal by filtration device needs regular dismounting to clean, and the period is about 3 months, expends a large amount of artificial.
2. for existing enclosed self-ventilated type motor, advantage be stator insulation have clean working environment thus it is exhausted
Edge high reliablity；Deficiency is that stator is directly contacted with shell, and heat conduction efficiency is high, is easier to radiate by shell, and rotor
It is enclosed in shell, heat is difficult to distribute, so to improve the power and efficiency of enclosed motor, rotor heat dissipation is ratio
Biggish challenge, the motor of same power and efficiency, enclosed motor have bigger volume relative to open motor
And therefore weight, material cost can also rise；
Rapid proliferation, the traction electric machine of tramcar are easy contact close to road surface to current low-floor tramcar at home
Rainwater and dust, it is necessary to use closed traction motor；In order to increase the space of passenger and channel above bogie, need to lead
The volume for drawing motor is sufficiently small；In order to meet bigger ramp passage capacity and improve Brake energy recovery rate, it is desirable that traction electricity
The power of motivation is sufficiently large, these factors all propose huge challenge to current traction motor design work.
3. advantage is small in size, light-weight, power density height for existing open forced ventilation motor；It is insufficient
It is to need independent blower and air duct, it is additional to increase cost and space requirement；
Current high-speed rail motor-car and locomotive it is commonly used be open forced ventilation traction motor because vehicle is to motor
Power requirement is high, and existing open self-ventilation motor volume is too big, and the space of bogie can not accommodate；It is open to force
Traction motor of divulging information needs independent blower and air duct, is arranged in compartment in the following, installment work is troublesome, be vehicle factor very
One work of headache.
4. the rotor heating of threephase asynchronous is more, usual working rotor temperature is higher by 50 to 100 than stator operating temperature
Degree, rotor heat are easy to be conducted to bearing by axis, and bearing operating temperatures height can reduce the performance of lubricating grease and then lower bearing
Service life；The heated excessively expansion of bearing inner race may make the working gap of bearing disappear, and bearing is stuck and then burns motor.
Summary of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, provide a kind of using axis circulation wind realization stator envelope
The motor with the open draft type of rotor is closed, as an open and enclosed motor intermediate varieties, in addition to explosion-proof, latent
Outside water and equal special motors peculiar to vessel, the open and enclosed motor of most of routine can be substituted, make motor at
This is low, and small in size, operating temperature is low, and work efficiency is high, and the reliability of bearing and stator insulation is also high；
To achieve the above object, first invention technical solution of the invention is as follows：
The outermost of motor is that shell, drive end bearing bracket, rear end cap tighten together to form a cavity；
Stator includes stator core and stator winding, and stator winding is fixed on the equally distributed slot of stator core inner periphery
It is interior；The End winding of stator is arranged in stator core both ends；Form the jointing placement between multiple coils of stator winding
In the side of left end winding；Stator core is fixed on the inner periphery of shell by interference fit；
Fore bearing is mounted on the center of drive end bearing bracket, and there is the labyrinth gland of responsible fixing bearing in left and right；
Rear bearing is mounted on the center of rear end cap, and there is the labyrinth gland of responsible fixing bearing in left and right；
Axis is placed in fore bearing and the centre bore of rear bearing, rotates freely energy by two bearings realizations two are point-supported
Power；
Rotor includes rotor core and mouse cage winding, and mouse cage winding is fixed on the equally distributed slot of rotor core excircle
It is interior；Cage ring is arranged in the two sides of rotor core；Rotor core inner hole sleeve, can by interference fit in the middle position of axis
Band moving axis rotates, and passes through shaft end output power；
The flange of drive end bearing bracket and velocity sensor fluted disc form labyrinth seal, the flange of rear aerofoil fan and rear end cap it is convex
Edge forms labyrinth seal, this at two cooperation position stator winding and air duct are separated, to reach the open ventilating and cooling of rotor,
Stator enclosed-ventilated is cooled into possibility；
The stator air duct of motor housing is in width and maximum sized four angles of height on the outside of motor body, is not take up
Motor circumferential size is that stator and rotor retain maximum space, has higher power density；
The excircle of the intermediate maximum gauge section of axis is provided with helicla flute, and preceding aerofoil fan and rear aerofoil fan are arranged in axis
Spiral section two sides；The fan blade of two aerofoil fans is also screw and the hand of spiral phase with the helicla flute on axis
Together；When the rotor rotates, three groups of screws on three parts generate the superposition of wind-force, and air is pushed to flow in air duct；
If rotor steering changes, wind direction also changes, but it is cooling not influence motor；This axis stream combination cooling device is not
The axial dimension for occupying motor does not need the radial dimension of expanded motor yet, so that the shape of motor is more compact；According to cooling
The needs of air quantity and wind pressure, and simplify structure, can be used alone axial screw section or its in axle flow fan
Any combination；
Stator cooling air channel is serially connected with rotor cooling air channel, is combined the unit jointly by spiral and is provided wind pressure；
There is air inlet at fore bearing in drive end bearing bracket；Aerofoil fan has wrapped up the installation position of the rear bearing of rear end cap afterwards
It sets, can objectively strengthen the cooling of forward and backward bearing, improve the service life of bearing；
Velocity sensor fluted disc is put in this position and does not occupy motor axial length additionally, and it is tight to be conducive to motor axial dimension
It gathers；If you do not need to velocity sensor, can cancel this part, the flange of suitably modified rear aerofoil fan reaches labyrinth seal
Effect.
To achieve the above object, the second inventive technique scheme of the invention is as follows：
The outermost of motor is that shell, drive end bearing bracket, rear end cap tighten together to form a cavity；
Stator includes stator core and stator winding, and stator winding is fixed on the equally distributed slot of stator core inner periphery
It is interior；The End winding of stator is arranged in stator core both ends；Form the jointing placement between multiple coils of stator winding
In the side of left end winding；Stator core is fixed on the inner periphery of shell by interference fit；
Fore bearing is mounted on the center of drive end bearing bracket, and there is the labyrinth gland of responsible fixing bearing in left and right；
Rear bearing is mounted on the center of rear end cap, and there is the labyrinth gland of responsible fixing bearing in left and right；
Axis is placed in fore bearing and the centre bore of rear bearing, rotates freely energy by two bearings realizations two are point-supported
Power；
Rotor includes rotor core and mouse cage winding, and mouse cage winding is fixed on the equally distributed slot of rotor core excircle
It is interior；Cage ring is arranged in the two sides of rotor core；Rotor core inner hole sleeve, can by interference fit in the middle position of axis
Band moving axis rotates, and passes through shaft end output power；
The flange of drive end bearing bracket and velocity sensor fluted disc form labyrinth seal, the flange of rear aerofoil fan and rear end cap it is convex
Edge forms labyrinth seal, this at two cooperation position stator winding and air duct are separated, to reach the open ventilating and cooling of rotor,
Stator enclosed-ventilated is cooled into possibility；
Motor housing air duct is located at the inner periphery of shell and is uniformly distributed, and also uniformly fluting is the excircle of stator core
The flowing of air reserves channel；One side stator core is directly contacted with air, good cooling results, on the other hand the isolation of these slots
Stator yoke and cast iron housing lower iron loss；
The excircle of the intermediate maximum gauge section of axis is provided with helicla flute, and preceding aerofoil fan and rear aerofoil fan are arranged in axis
Spiral section two sides；The fan blade of two aerofoil fans is also screw and the hand of spiral phase with the helicla flute on axis
Together；When the rotor rotates, three groups of screws on three parts generate the superposition of wind-force, and air is pushed to flow in air duct；
If rotor steering changes, wind direction also changes, but it is cooling not influence motor；This axis stream combination cooling device is not
The axial dimension for occupying motor does not need the radial dimension of expanded motor yet, so that the shape of motor is more compact；According to cooling
The needs of air quantity and wind pressure, and simplify structure, can be used alone axial screw section or its in axle flow fan
Any combination；
Stator cooling air channel is serially connected with rotor cooling air channel, is combined the unit jointly by spiral and is provided wind pressure；
There is air inlet at fore bearing in drive end bearing bracket；Aerofoil fan has wrapped up the installation position of the rear bearing of rear end cap afterwards
It sets, can objectively strengthen the cooling of forward and backward bearing, improve the service life of bearing；
Velocity sensor fluted disc is put in this position and does not occupy motor axial length additionally, and it is tight to be conducive to motor axial dimension
It gathers；If you do not need to velocity sensor, can cancel this part, the flange of suitably modified left axle flow fan reaches labyrinth seal
Effect.
To achieve the above object, third inventive technique scheme of the invention is as follows：
The outermost of motor is that shell, drive end bearing bracket, rear end cap tighten together to form a cavity；
Stator includes stator core and stator winding, and stator winding is fixed on the equally distributed slot of stator core inner periphery
It is interior；The End winding of stator is arranged in stator core both ends；Form the jointing placement between multiple coils of stator winding
In the side of right-hand end winding；Stator core is fixed on the inner periphery of shell by interference fit；
Fore bearing is mounted on the center of drive end bearing bracket, and there is the labyrinth gland of responsible fixing bearing in left and right；
Rear bearing is mounted on the center of rear end cap, and there is the labyrinth gland of responsible fixing bearing in left and right；
Axis is placed in fore bearing and the centre bore of rear bearing, rotates freely energy by two bearings realizations two are point-supported
Power；
Rotor includes rotor core and mouse cage winding, and mouse cage winding is fixed on the equally distributed slot of rotor core excircle
It is interior；Cage ring is arranged in the two sides of rotor core；Rotor core inner hole sleeve, can by interference fit in the middle position of axis
Band moving axis rotates, and passes through shaft end output power；
The flange of the flange of drive end bearing bracket and preceding aerofoil fan forms labyrinth seal, the flange of rear aerofoil fan and rear end cap
Flange forms labyrinth seal, this at two cooperation position stator winding and air duct are separated, for reach rotor it is open divulge information it is cold
But, stator enclosed-ventilated is cooled into possibility；
Motor housing air duct is located at the inner periphery of shell and is uniformly distributed, and also uniformly fluting is the excircle of stator core
The flowing of air reserves channel；One side stator core is directly contacted with air, good cooling results, on the other hand the isolation of these slots
Stator yoke and cast iron housing lower iron loss；
The excircle of the intermediate maximum gauge section of axis is provided with helicla flute, and preceding aerofoil fan and rear aerofoil fan are arranged in axis
Spiral section two sides；The fan blade of two aerofoil fans is also screw and the hand of spiral phase with the helicla flute on axis
Together；When the rotor rotates, three groups of screws on three parts generate the superposition of wind-force, and air is pushed to flow in air duct；
If rotor steering changes, wind direction also changes, but it is cooling not influence motor；This axis stream combination cooling device is not
The axial dimension for occupying motor does not need the radial dimension of expanded motor yet, so that the shape of motor is more compact；According to cooling
The needs of air quantity and wind pressure, and simplify structure, can be used alone axial screw section or its in axle flow fan
Any combination；
Stator cooling air channel is serially connected with rotor cooling air channel, is combined the unit jointly by spiral and is provided wind pressure；
Preceding aerofoil fan has wrapped up the installation site of the fore bearing of drive end bearing bracket；There is air inlet at rear bearing in rear end cap
Mouthful；The cooling that forward and backward bearing can objectively be strengthened, improves the service life of bearing.
To achieve the above object, the 4th inventive technique scheme of the invention is as follows：
The outermost of motor is that shell, drive end bearing bracket, rear end cap tighten together to form a cavity；
Stator includes stator core and stator winding, and stator winding is fixed on the equally distributed slot of stator core inner periphery
It is interior；The End winding of stator is arranged in stator core both ends；Form the jointing placement between multiple coils of stator winding
In the side of right-hand end winding；Stator core is fixed on the inner periphery of shell by interference fit；
Fore bearing is mounted on the center of drive end bearing bracket, and there is the labyrinth gland of responsible fixing bearing in left and right；
Rear bearing is mounted on the center of rear end cap, and there is the labyrinth gland of responsible fixing bearing in left and right；
Axis is placed in fore bearing and the centre bore of rear bearing, rotates freely energy by two bearings realizations two are point-supported
Power；
Rotor includes rotor core and mouse cage winding, and mouse cage winding is fixed on the equally distributed slot of rotor core excircle
It is interior；Cage ring is arranged in the two sides of rotor core；Rotor core inner hole sleeve, can by interference fit in the middle position of axis
Band moving axis rotates, and passes through shaft end output power；
The flange of the flange of drive end bearing bracket and preceding aerofoil fan forms labyrinth seal, the flange of rear aerofoil fan and rear end cap
Flange forms labyrinth seal, this at two cooperation position stator winding and air duct are separated, for reach rotor it is open divulge information it is cold
But, stator enclosed-ventilated is cooled into possibility；
Motor housing air duct is located at the excircle of shell, and in order to simplify shell mechanism and reduce weight, stator air duct is by outer
The fan housing of shell covering realizes that fan housing is a thin-wall stamping part；
The excircle of the intermediate maximum gauge section of axis is provided with helicla flute, and preceding aerofoil fan and rear aerofoil fan are arranged in axis
Spiral section two sides；The fan blade of two aerofoil fans is also screw and the hand of spiral phase with the helicla flute on axis
Together；When the rotor rotates, three groups of screws on three parts generate the superposition of wind-force, and air is pushed to flow in air duct；
If rotor steering changes, wind direction also changes, but it is cooling not influence motor；This axis stream combination cooling device is not
The axial dimension for occupying motor does not need the radial dimension of expanded motor yet, so that the shape of motor is more compact；According to cooling
The needs of air quantity and wind pressure, and simplify structure, can be used alone axial screw section or its in axle flow fan
Any combination；
Stator cooling air channel is serially connected with rotor cooling air channel, is combined the unit jointly by spiral and is provided wind pressure；
Preceding aerofoil fan has wrapped up the installation site of the fore bearing of drive end bearing bracket；There is air inlet at rear bearing in rear end cap
Mouthful；The cooling that forward and backward bearing can objectively be strengthened, improves the service life of bearing.
Further, axis stream combines cooling device, and the excircle of the intermediate maximum gauge section of axis is provided with helicla flute, front axle
Flow fan and rear aerofoil fan are arranged in the two sides of axial screw section；The fan blade of two aerofoil fans be also screw and with
The hand of spiral of helicla flute on axis is identical；When the rotor rotates, three groups of screws on three parts generate the folded of wind-force
Add, air is pushed to flow in air duct；If rotor steering changes, wind direction also changes, but it is cold not influence motor
But；The axial dimension that this axis stream combination cooling device is not take up motor does not need the radial dimension of expanded motor yet, so that electric
The shape of machine is more compact；According to the needs of cooling air quantity and wind pressure, and simplify structure, can be used alone axial screw section
Or itself and any combination in axle flow fan.
Further, the spiral on axis excircle can be integrated on the excircle of motor shaft, be a part of axis；?
Identical function can be realized using the helical spring of rectangular section using the form seperated with axis on the excircle of hot jacket to axis
Can, reduce material and machining cost；Processing method on axis is integrated in using spiral, it can be a plurality of along axis with additional processing
To slot segmentation, form multistage turbine to increase the circulation of air.
Further, the stator air duct of motor housing is in the width on the outside of motor body and height maximum sized four
Angle is not take up motor circumferential size, is that stator and rotor retain greatest diametrical dimension, motor is made to have higher power density；
Two ventilation openings are located on drive end bearing bracket and shell is on driving end side circumference, suitable for the motor for driving railcar.
Further, motor housing air duct is located at the inner periphery of shell and is uniformly distributed, the excircle of stator core
Uniformly fluting is that the flowing of air reserves channel, and one side stator core is directly contacted with air, good cooling results, on the other hand
Stator yoke and cast iron housing is isolated in these slots, lowers iron loss；Two ventilation openings are located at outer with drive end bearing bracket on drive end bearing bracket end face
Motor on circumference, suitable for driving track motor group vehicle.
Further, motor housing air duct is located at the inner periphery of shell and is uniformly distributed, the excircle of stator core
Uniformly fluting is that the flowing of air reserves channel；One side stator core is directly contacted with air, good cooling results, on the other hand
Stator yoke and cast iron housing is isolated in these slots, lowers iron loss；Two ventilation openings are located on rear end cap and shell is close to non-driven
On the circumference for holding side, suitable for the motor of driving locomotive and tramcar vehicle, their common feature is to require electricity
Motivation is connect using flange with gear-box, and ventilation opening cannot be located on drive end bearing bracket end face.
Further, motor housing air duct is located at the excircle of shell, in order to simplify shell mechanism and reduce weight, stator
Realize that fan housing is a thin-wall stamping part by the fan housing that shell covers in air duct；Two ventilation openings are located on rear end cap and shell leans on
Nearly anti-drive end side, is suitable for industrial motor, can both be installed with pedestal or be installed with flange.
Beneficial effects of the present invention：
1. the motor using this technology replaces open self-ventilation motor, since rotor remains open ventilation,
Rotor heat-sinking capability is maintained；Stator uses enclosed-ventilated, and the working portion heat loss through conduction ability of stator winding is constant, end
Portion's winding no longer directly contacts outside air, and heat dissipation will receive certain influence, but high-temperature region is concentrated mainly on stator winding work
Make central interior, End winding temperature is originally more much lower than the temperature of working portion center, even if having a little raising, still
The improvement of working environment can generate more active influence, can be avoided the generation of many insulation faults, the reliability of motor
The level of enclosed motor is reached；
The open self-ventilation traction motor for replacing current metro industry commonly used using the motor of this technology, because
Reliability for the improvement of the working environment of stator winding, stator insulation is improved, so that design in traction motor 30 years makes
Become practical with the target in service life；
Using the motor of this technology, ventilation opening, which need to only install monolayer composite net, prevents foreign matter from entering, and does not need to install
Device to be filtered, the work of periodic cleaning is eliminated, every work 3 years does not need disassembly and installation program with compressed air cleaning,
Maintenance work becomes easy simply；Since ventilation cooling device is not take up axial dimension, it can be work people that motor length, which shortens,
Member retains bigger maintenance space.
2. replacing enclosed self-ventilated type motor using the motor of this technology, stator winding is closed working environment,
Stator insulation reliability is constant；Rotor becomes open ventilation from enclosed-ventilated, and heat-sinking capability is reinforced, and temperature of rotor reduces,
Resistance reduces, and resistance heat is reduced, and efficiency is improved, and since cage rotor is sturdy and durable, the life and reliability of rotor is not
It will receive influence；
It is led using the enclosed self-ventilation that the motor of this technology replaces current low-floor tramcar industry commonly used
Draw motor, stator winding is closed working environment, and stator insulation reliability is constant；Due to rotor heat-sinking capability raising with
And axis stream combined ventilating device saves length dimension, the power of same installation space motor can design it is more powerful,
Project planner can be reduced and solve space, power, contradictory difficulty between reliability, so that design work is become opposite and hold
Easily.
3. the motor using this technology replaces open forced ventilation motor, since stator winding is closed work
Environment, stator insulation reliability can be relatively reliable；Since axis stream combined ventilating device saves length dimension, same installation is empty
Between using this technology motor power can reach or close to open forced ventilation motor level；
Using the open forced ventilation traction commonly used instead of current high-speed rail motor-car and locomotive of the motor of this technology
Motor can exempt independent blower and air duct and cumbersome compartment bottom that open forced ventilation traction motor needs
The work of portion's mounting arrangements, saves a large amount of material resources manpower；It is emphasized that the cruising speed of vehicle cannot be below middling speed, i.e., it is long
Time heavy load low speed climbing be to this technology motor it is unfavorable because the ventilation quantity of self-ventilated machine low speed it is small to heat dissipation not
Benefit.
4. being equipped with air inlet at bearing using the drive end bearing bracket and rear end cap of the motor of this technology or having air duct logical
It crosses, can objectively reinforce the cooling of bearing, reduce the operating temperature of bearing, the not degradable denaturation of lubricating grease, bearing becomes more
Add reliable operation, the service life is improved.
Detailed description of the invention
Fig. 1 is the axis direction cross-sectional view of first embodiment of the invention；
Fig. 2 is the axis direction cross-sectional view of second embodiment of the invention；
Fig. 3 is the axis direction cross-sectional view of third embodiment of the invention；
Fig. 4 is the axis direction cross-sectional view of fourth embodiment of the invention；
Fig. 5 is the perspective view of preceding aerofoil fan in the present invention；
Fig. 6 is the perspective view of axis of the present invention；
Fig. 7 is the perspective view of rear aerofoil fan in the present invention；
Fig. 8 is the front perspective view of first embodiment of the invention；
Fig. 9 is the rear perspective view of first embodiment of the invention；
Figure 10 is the front perspective view of second embodiment of the invention；
Figure 11 is the rear perspective view of second embodiment of the invention；
Figure 12 is the front perspective view of third embodiment of the invention；
Figure 13 is the rear perspective view of third embodiment of the invention；
Figure 14 is the front perspective view of fourth embodiment of the invention；
Figure 15 is the rear perspective view of fourth embodiment of the invention；
Figure 16 is the axis direction cross-sectional view of existing open self-ventilation motor；
Figure 17 is the axis direction cross-sectional view of existing enclosed self-ventilated type motor.
Figure 18 is the axis direction cross-sectional view of existing open forced ventilation motor.
Note：Four-headed arrow in figure indicates air-flow direction, because of the difference according to steering, the flow direction meeting of air
It changes, so using four-headed arrow, but ventilation quantity is constant would not to influence cooling effect.
Specific embodiment
Referring now to attached drawing, wherein same appended drawing reference indicates identical or corresponding portion in whole multiple views
Part；
Attached drawing 1 is the axis direction cross-sectional view of first embodiment of the invention, below with reference to the accompanying drawings 1 with regard to first embodiment implementation
Mode is illustrated：
The characteristics of first embodiment be the width that is on the outside of motor body of the stator air duct 2h of motor housing 2 and height most
Large-sized four angles, are not take up motor circumferential size, are that stator and rotor retain greatest diametrical dimension, have motor higher
Power density；Two ventilation openings are located on drive end bearing bracket and shell is on driving end side circumference, suitable for driving subway
Motor；
Step 1. stator 1 includes stator core 1a and stator winding 1b, and stator core 1a inner periphery is uniformly distributed very much
Slot, stator winding 1b are fixed in these slots；Stator winding is made of multiple coils, and each stator coil is the string of multi-turn
Connection, thus End winding 1c be it is essential, be disposed in stator core both ends；Stator coil 1b needs to be grouped each other
And well-regulated to connect, so there is many connector 1c, winding joint 1c has been disposed in left side and has driven end in Fig. 1；
Stator core is fixed on the inner periphery of shell 2 by interference fit, and assembly method is that shell 2 is heated to 200 degree or more, outside
The inner hole expanded by heating of shell 2 becomes larger, and stator 1 is put into shell inner hole by the front end of shell 2 at this time, shell inner hole has located stator
The step of position, the after cooling contraction of shell 2 are tightly embraced stator 1；
Step 2. rotor 3 includes that rotor core 3a and mouse cage coil 3b, rotor core excircle are uniformly distributed many slots,
The rodlike conducting bar of mouse cage coil is inserted in the slot of rotor, and a conducting bar, two cricoid end ring 3c arrangements are arranged in each slot
At the both ends of rotor core, all conducting bars are welded together, form the entirety of a mutual conduction；
The excircle arrangement spiral 4a in the middle position of step 3. axis 4 provides air pressure and flows in helicla flute 4b, structure
At one section of air duct, the processing method on axis is integrated in using spiral, can be a plurality of along axial slot segmentation 4c with additional processing,
Multistage turbine is formed to increase the circulation of air；Axis 4 is inserted in the inner hole of rotor core 3a, by interference fit 3 energy of rotor
Enough band moving axis 4 rotate, and by shaft end output power, assembly method is heating rotor, rotor inner hole expansion, be inserted into after axis etc.
To completely cooling, the two is just completely fixed；
Step 4. drive end bearing bracket 5 is ductile cast iron casting, and fore bearing 7 is installed in center, and center is surrounded on end face
Rotor air duct ventilation opening 5y is arranged in hole, and the fluted disc 17 of flange 5a and velocity sensor on the inside of drive end bearing bracket constitute labyrinth seal；Before
The processing method of end cap is first cast blank part, then machines each interface with the cooperation of other parts, examines after processing each
After size qualification, understand that burr cleans, motor assembly is waited to use；
Step 5. rear end cap 6 is ductile cast iron casting, and rear bearing 8 is installed in center, and lateral wall and inner sidewall constitute wind
The flange 10c of one section of 6h in road, the inner port edge 6a of inner sidewall and rear aerofoil fan 10 constitutes labyrinth seal；Processing method is first
Then cast blank part machines each interface with the cooperation of other parts and understands burr after examining each size qualification after processing
Cleaning waits motor assembly to use；
Step 6. shell 2 is ductile cast iron casting, and inner hole is used to fixed stator 1, the end face at both ends and drive end bearing bracket 5, rear end
The cooperation of lid 6 is fixed, and four, outside corner arrangement stator cooling air channel 2h and front end face are equipped with ventilation hole 2x.Processing method is first
Then cast blank part machines each interface with the cooperation of other parts and understands burr after examining each size qualification after processing
Cleaning waits motor assembly to use；
Step 7. fore bearing 7 is a cylindrical roller bearing, and feature is that bearing inner race can be separately separated out, that is,
Bearing inner race, outer ring can separate in motor assembly.Assemble sequence is the outer ring fore bearing 7 together with roller and holding circle one
In the bearing chamber for playing indentation 5 center of drive end bearing bracket, the labyrinth seal 12,13,14 of bearing two sides, labyrinth seal are then assembled
The effect of part be fixing bearing, lock lubricating grease do not leak, prevent introduced contaminants from entering bearing；
Step 8. rear bearing 8 is a deep groove ball bearing, rear bearing 8 is pressed into the bearing chamber of 6 center of rear end cap；
Aerofoil fan 9 is an aluminum alloy die casting before step 9., is evenly arranged spiral fan blade 9a in circumferential direction inside and is
Air duct provides wind pressure, and the gap 9b between fan blade just forms air-flow, disposes velocity sensor fluted disc at the maximum gauge of left side
17；Processing method is first die-casting blank part, then machines necessary fit dimension；Assembly method is hot jacket on axis, right side
Axis platform rank and rotor cage end ring 3c are resisted simultaneously；
Aerofoil fan 10 is an aluminum alloy die casting after step 10., is evenly arranged spiral fan blade 10a in circumferential direction inside
Wind pressure is provided for air duct, the gap 10b between fan blade just forms air-flow, the inner port edge 6a and rear axle stream wind of rear end cap inner sidewall
The flange 10c of fan 10 constitutes labyrinth seal；Processing method is first die-casting blank part, then machines necessary fit dimension；Dress
It is hot jacket on axis with mode, left side resists axis platform rank and rotor core end face simultaneously；
Step 11. velocity sensor ruler disk 17 needs velocity sensor detection to turn for the traction motor of rail traffic
Speed, velocity sensor are fixed on end cap, and velocity sensor is fixed on the end face of drive end bearing bracket 5 in Fig. 1.Velocity sensor ruler disk
17 be an iron hoop, and before being fixed at the maximum gauge of the left side of aerofoil fan 9, fluted disc machined tooth and slot on end face.When
When velocity sensor ruler disk 17 is rotated with preceding aerofoil fan 9, it can feel close to the velocity sensor of tooth and slot according to eddy current effect
It should arrive, identify speed speed and steering；
The assembly of step 12. rotor/shaft component and rear bearing and rear end cap is that axis and rotor are placed vertically, rear end court
On；Rear bearing inner ring is heated to after 120 degree with industrial air duct, and rear bearing and rear end cap are covered together in the rear end of axis；Finally fill
Mix the locking plate 15 of locking bearing inner race and the bearing cap 16 of locking bearing outer ring；
The drive end bearing bracket for being equipped with fore bearing is assembled with the shell bolt for being equipped with stator and is fixed together by step 13.；
Stator/front end cap assemblies that step 14. completes the rotor of completion/rear end cap assemblies insertion；
Step 15. shrink-on matches fore bearing inner ring clamp ring 11, finally infuses in lubricating grease to front and back bearings；
Step 16. installs four fan housings 18 and forms complete air duct；The group of stator cooling air channel becomes 2x, 2h, 6h, rotor
The group of cooling air channel becomes 5y, 9b, 4b, 10b, two cooling air channels and is serially connected, and is combined the unit jointly by spiral and provides wind pressure.
Attached drawing 2 is the axis direction cross-sectional view of second embodiment of the invention, below with reference to the accompanying drawings 2 with regard to second embodiment implementation
Mode is illustrated：
The characteristics of second embodiment is that motor housing air duct 2h is located at the inner periphery of shell 2 and is uniformly distributed, stator iron
The flowing that 1h is air of uniformly slotting of the excircle of the heart reserves channel, and one side stator core is directly contacted with air, cooling effect
Fruit is good, and on the other hand these slots isolation stator yoke and cast iron housing, lower iron loss；Two ventilation openings are drive end bearing bracket end face respectively
On 5y and drive end bearing bracket excircle on 5x, suitable for driving track motor group vehicle motor；
The embodiment of second embodiment is relative to the difference of the embodiment of first embodiment, since stator is divulged information
Hole inside the housing, does not need external fan housing, so not needing step 16, other steps are all identical.
Attached drawing 3 is the axis direction cross-sectional view of third embodiment of the invention, below with reference to the accompanying drawings 3 with regard to 3rd embodiment implementation
Mode is illustrated：
The characteristics of 3rd embodiment is that motor housing air duct 2h is located at the inner periphery of shell 2 and is uniformly distributed, stator iron
Also uniformly fluting is that the flowing of air reserves channel to the excircle of the heart；One side stator core is directly contacted with air, cooling effect
Fruit is good, and on the other hand these slots isolation stator yoke and cast iron housing, lower iron loss；Two ventilation openings are on rear end cap respectively
The 2x of 6y and shell on the circumference of anti-drive end side, suitable for driving locomotive and tramcar vehicle motor,
Their common feature is that motor is required to connect using flange with gear-box, and ventilation opening cannot be located on drive end bearing bracket end face；
The embodiment of 3rd embodiment is relative to the difference of the embodiment of first embodiment, fixed in step 1
Son be put by the rear end of shell in the hole of shell and by hole step position, then by shell rear end indentation air every
It covers the inner hole of 19 shells and withstands stator rear end face；Inside the housing due to stator ventilation hole, external fan housing is not needed, so
Step 16 is not needed, other steps are all identical as the embodiment of first embodiment.
Attached drawing 4 is the axis direction cross-sectional view of fourth embodiment of the invention, below with reference to the accompanying drawings 4 with regard to fourth embodiment implementation
Mode is illustrated：
The characteristics of fourth embodiment is the excircle that motor housing air duct 2h is located at shell 2, in order to simplify shell mechanism and
Weight is reduced, the fan housing 20 that stator air duct is covered by shell realizes that fan housing 20 is a thin-wall stamping part；Two ventilation opening difference
Be the 20x of 6y on rear end cap and shell close to anti-drive end side, be suitable for industrial motor, be both suitable for pedestal installation or
It can be installed with flange；
The embodiment of fourth embodiment is relative to the difference of the embodiment of first embodiment, fixed in step 1
Son is to be put by the rear end of shell in the hole of shell and positioned by the step in hole；Outside the shell due to stator ventilation hole,
The fan housing 20 that stator air duct is covered by shell realizes, so what is installed in step 16 is fan housing 20, other steps are all real with first
The embodiment for applying example is identical.
Open self-ventilation motor is replaced using the motor of this technology, since rotor remains open ventilation, is turned
Sub- heat-sinking capability is maintained；Stator uses enclosed-ventilated, and the working portion heat loss through conduction ability of stator winding is constant, end
Winding no longer directly contacts outside air, and heat dissipation will receive certain influence, but high-temperature region is concentrated mainly on stator winding work
Central interior, End winding temperature is originally more much lower than the center of working portion, even if there is a little raising, but building ring
The improvement in border can generate more active influence, can be avoided the generation of many insulation faults, and the reliability of motor reaches
The level of enclosed motor；
The open self-ventilation traction motor for replacing current metro industry commonly used using the motor of this technology, because
Reliability for the improvement of the working environment of stator winding, stator insulation is improved, so that design in traction motor 30 years makes
Become practical with the target in service life；
Using the motor of this technology, ventilation opening, which need to only install monolayer composite net, prevents foreign matter from entering, and does not need to install
Device is filtered, eliminates the work of periodic cleaning, every work 3 years, with compressed air simple cleaning, maintenance work is become easy
Simply；Since ventilation cooling device is not take up axial dimension, motor length shortens, and bigger maintenance can be retained for staff
Space；
Enclosed self-ventilated type motor is replaced using the motor of this technology, stator winding is closed working environment, fixed
Insulating sublayer reliability is constant；Rotor becomes open ventilation from enclosed-ventilated, and heat-sinking capability is reinforced, and temperature of rotor reduces, electricity
Resistance reduces, and resistance heat is reduced, and efficiency is improved；
It is led using the enclosed self-ventilation that the motor of this technology replaces current low-floor tramcar industry commonly used
Draw motor, stator winding is closed working environment, and stator insulation reliability is constant；Due to rotor heat-sinking capability raising with
And axis stream combined ventilating device saves length dimension, the power of same installation space motor can design it is more powerful,
Project planner can be reduced and solve space, power, contradictory difficulty between reliability, so that design work is become opposite and hold
Easily；
Open forced ventilation motor is replaced using the motor of this technology, since stator winding becomes closed work
Environment, stator insulation reliability can be relatively reliable；Since axis stream combined ventilating device saves length dimension, same installation is empty
Between using this technology motor power can reach or close to open forced ventilation motor level；
Using this technology motor replace current high-speed rail motor-car and locomotive it is commonly used be that open forced ventilation is led
Draw motor, independent blower and air duct and cumbersome installation that open forced ventilation traction motor needs can be exempted
It arranges work, saves material resources manpower；
Air inlet is equipped at bearing using the drive end bearing bracket and rear end cap of the motor of this technology or has air duct to pass through,
The cooling of bearing can objectively be reinforced, bearing operating temperatures are low, the not degradable denaturation of lubricating grease, and bearing becomes more to work can
It leans on, bearing life is improved；
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and is modified.Therefore, the invention is not limited to the specific embodiments disclosed and described above, to the one of invention
A little modifications and changes should also be as falling into the scope of the claims of the present invention.In addition, although being used in this specification
Some specific terms, these terms are merely for convenience of description, does not limit the present invention in any way.
Claims (1)
1. realizing the motor of stator closing with the open draft type of rotor using axis circulation wind, it is characterised in that：
The outermost of motor is that shell (2), drive end bearing bracket (5), rear end cap (6) tighten together to form a cavity；
Stator (1) includes stator core (1a) and stator winding (1b), and stator winding (1b) is fixed on stator core (1a) inner circle
In all equally distributed slots；The End winding (1c) of stator is arranged in stator core both ends；Form multiple coils of stator winding
Between jointing (1d) be placed in the side of left end winding；Stator core (1a) is fixed on outer by interference fit
The inner periphery of shell (2)；
Fore bearing (7) is mounted on the center of drive end bearing bracket (5), and there is the labyrinth gland of responsible fixing bearing in left and right；
Rear bearing (8) is mounted on the center of rear end cap (6), and there is the labyrinth gland of responsible fixing bearing in left and right；
Axis (4) is placed in fore bearing (7) and the centre bore of rear bearing (8), realizes two point-supported freedom by two bearings
Rotatory power；
Rotor (3) includes rotor core (3a) and mouse cage winding (3b), and mouse cage winding (3b) is fixed on rotor core (3a) outer circle
In all equally distributed slots；Cage ring (3c) is arranged in the two sides of rotor core (3a)；Rotor core inner hole sleeve is in axis
Between position, by interference fit be able to drive axis rotation, pass through shaft end output power；
The flange (5a) of drive end bearing bracket (5) and velocity sensor fluted disc (17) form labyrinth seal, the flange of rear aerofoil fan (10)
The flange (6a) of (10c) and rear end cap (6) forms labyrinth seal, this at two cooperation position stator winding and air duct are separated,
So that the open ventilating and cooling of rotor, stator enclosed-ventilated is cooling；
The stator air duct (2h) of motor housing (2) is in width and maximum sized four angles of height on the outside of motor body；
The excircle of the intermediate maximum gauge section of axis (4) is provided with helicla flute (4b), preceding aerofoil fan (9) and rear aerofoil fan
(10) two sides of axial screw section are arranged in；The fan blade of two aerofoil fans be also screw and with the helicla flute on axis
The hand of spiral is identical；When the rotor rotates, three groups of screws on three parts generate the superposition of wind-force, push air in wind
It is flowed in road；If rotor steering changes, wind direction also changes, but it is cooling not influence motor；Stator cooling air channel
Group become ventilation hole (2x), motor housing air duct (2h), lateral wall and inner sidewall constitute one section (6h) in air duct, rotor is cooling
The group in air duct becomes gap (9b) between air inlet (5y), the first fan blade, helicla flute (4b), the gap between the second fan blade
(10b), two cooling air channels are serially connected, and are combined the unit jointly by spiral and are provided wind pressure；
There is air inlet (5y) at fore bearing (7) in drive end bearing bracket (5)；After aerofoil fan (10) has wrapped up rear end cap (6) afterwards
The installation site of bearing (8), can objectively strengthen the cooling of forward and backward bearing.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610157490.5A CN105634210B (en) | 2016-03-17 | 2016-03-17 | The motor of stator closing with the open draft type of rotor is realized using axis circulation wind |
| CN201810740840.XA CN108808986B (en) | 2016-03-17 | 2016-03-17 | Electric motor |
| CN201810740861.1A CN108923587B (en) | 2016-03-17 | 2016-03-17 | Electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610157490.5A CN105634210B (en) | 2016-03-17 | 2016-03-17 | The motor of stator closing with the open draft type of rotor is realized using axis circulation wind |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810740840.XA Division CN108808986B (en) | 2016-03-17 | 2016-03-17 | Electric motor |
| CN201810740861.1A Division CN108923587B (en) | 2016-03-17 | 2016-03-17 | Electric motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105634210A CN105634210A (en) | 2016-06-01 |
| CN105634210B true CN105634210B (en) | 2018-11-27 |
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ID=56048856
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610157490.5A Active CN105634210B (en) | 2016-03-17 | 2016-03-17 | The motor of stator closing with the open draft type of rotor is realized using axis circulation wind |
| CN201810740840.XA Active CN108808986B (en) | 2016-03-17 | 2016-03-17 | Electric motor |
| CN201810740861.1A Expired - Fee Related CN108923587B (en) | 2016-03-17 | 2016-03-17 | Electric motor |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
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| CN201810740840.XA Active CN108808986B (en) | 2016-03-17 | 2016-03-17 | Electric motor |
| CN201810740861.1A Expired - Fee Related CN108923587B (en) | 2016-03-17 | 2016-03-17 | Electric motor |
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| CN (3) | CN105634210B (en) |
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| CN106208499A (en) * | 2016-08-13 | 2016-12-07 | 中车永济电机有限公司 | A kind of full-enclosed permanent-magnet motor ventilation cooling structure |
| CN106208584A (en) * | 2016-08-13 | 2016-12-07 | 中车永济电机有限公司 | A kind of totally-enclosed self-ventilation magneto |
| CN106374661B (en) * | 2016-10-08 | 2019-01-04 | 珠海格力电器股份有限公司 | Rotor assembly and motor |
| CN106357037A (en) * | 2016-10-09 | 2017-01-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor rotor and motor |
| CN106738323A (en) * | 2017-02-21 | 2017-05-31 | 王宏保 | Portable mixed mud mixer |
| CN109586508A (en) * | 2017-09-29 | 2019-04-05 | 日本电产株式会社 | Axial magnetic flux motor and electric device |
| CN107492978A (en) * | 2017-10-20 | 2017-12-19 | 中车永济电机有限公司 | Light rail, electric driving machinery of subway |
| CN111630756B (en) * | 2018-01-26 | 2024-01-30 | 勃姆巴迪尔运输有限公司 | Motor with a motor housing |
| CN108155737A (en) * | 2018-02-07 | 2018-06-12 | 河南宝天机电科技有限公司 | A kind of motor of Low gullet torque |
| CN108155757A (en) * | 2018-02-07 | 2018-06-12 | 河南宝天机电科技有限公司 | A kind of ventilated type motor |
| CN108312018B (en) * | 2018-03-07 | 2023-10-13 | 浙江亚特电器股份有限公司 | Hand-held electric tool |
| JP6956046B2 (en) * | 2018-06-07 | 2021-10-27 | 東芝三菱電機産業システム株式会社 | How to design the frame structure |
| CN110798013A (en) * | 2018-08-03 | 2020-02-14 | 岳克森 | Turbofan rotor motor |
| CN111654135B (en) * | 2020-06-22 | 2022-03-11 | 浙江闽立电动工具有限公司 | Interior heat dissipation formula DC brushless motor and hand-held type lithium electric tool |
| CN112104119A (en) * | 2020-09-15 | 2020-12-18 | 华育昌(肇庆)智能科技研究有限公司 | Permanent magnet synchronous motor high-strength laminated motor rotor |
| CN112688471A (en) * | 2020-12-30 | 2021-04-20 | 苏州凯航电机有限公司 | Motor and cleaning device |
| CN113541381A (en) * | 2021-07-06 | 2021-10-22 | 中车株洲电机有限公司 | Permanent magnet motor and rail locomotive |
| WO2023015750A1 (en) * | 2021-08-11 | 2023-02-16 | 深圳市一诺微特电机有限公司 | Double-channel, spiral-type, efficient heat dissipation motor structure |
| CN113937953A (en) * | 2021-10-22 | 2022-01-14 | 中车株洲电机有限公司 | Active air supply cooling permanent magnet motor and electric locomotive |
| CN113937945A (en) * | 2021-10-22 | 2022-01-14 | 中车株洲电机有限公司 | Permanent magnet motor for cooling bearing and electric locomotive |
| CN116231932A (en) * | 2021-12-02 | 2023-06-06 | 中车永济电机有限公司 | Totally-enclosed self-ventilation type motor cooling structure |
| CN114389398A (en) * | 2022-01-19 | 2022-04-22 | 湖南中车尚驱电气有限公司 | Diffusion end cover and motor |
| CN115995910B (en) * | 2023-03-23 | 2023-06-02 | 河北乾顺节能科技有限公司 | Active ventilation and heat dissipation device of outer rotor motor |
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| JPH05298813A (en) * | 1992-04-17 | 1993-11-12 | Ricoh Co Ltd | Optical disk driving device and spindle motor |
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| JP4686228B2 (en) * | 2005-03-23 | 2011-05-25 | 株式会社東芝 | Fully enclosed fan motor |
| JP5297236B2 (en) * | 2009-03-17 | 2013-09-25 | 株式会社東芝 | Fully closed main motor for vehicles |
| DE102010010395A1 (en) * | 2010-03-05 | 2011-06-16 | Siemens Aktiengesellschaft | Permanent magnet excited electric machine has rotor with shaft and stator with associated stator winding, where internal cooling circuit is arranged within rotor |
| CN103178655A (en) * | 2011-11-03 | 2013-06-26 | 江苏远东电机制造有限公司 | Motor with air cooling structure |
| KR20140075981A (en) * | 2012-12-11 | 2014-06-20 | 현대자동차주식회사 | Cooling unit inner shaft bearing part in hollow type motor |
| JP2015104214A (en) * | 2013-11-25 | 2015-06-04 | 株式会社安川電機 | Rotary electric machine |
| CN203722413U (en) * | 2013-12-27 | 2014-07-16 | 合肥盛亚电机电泵有限公司 | Dry-type stator submersible electric pump capable of preventing friction between stator and rotor |
| CN203850952U (en) * | 2014-05-14 | 2014-09-24 | 赵彩红 | Motor |
| CN104135114B (en) * | 2014-08-23 | 2016-08-17 | 永济新时速电机电器有限责任公司 | High pressure air water cooling double-fed wind power generator |
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2016
- 2016-03-17 CN CN201610157490.5A patent/CN105634210B/en active Active
- 2016-03-17 CN CN201810740840.XA patent/CN108808986B/en active Active
- 2016-03-17 CN CN201810740861.1A patent/CN108923587B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN105634210A (en) | 2016-06-01 |
| CN108923587A (en) | 2018-11-30 |
| CN108808986B (en) | 2020-08-11 |
| CN108923587B (en) | 2020-06-30 |
| CN108808986A (en) | 2018-11-13 |
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Effective date of registration: 20201014 Address after: No.3 workshop, No.859, Shanghai South Road, Chuzhou, Anhui Patentee after: Chuzhou precision magnesium equipment mould manufacturing Co.,Ltd. Address before: 350200 the 1 storefront of S03, 99, Chaoyang North Road, Changle, Fujian. Patentee before: Changle Jing Yuan Building Materials Technology Co.,Ltd. |