CN209150914U - IE4 efficiency grade low-voltage heavy-duty motor - Google Patents
IE4 efficiency grade low-voltage heavy-duty motor Download PDFInfo
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- CN209150914U CN209150914U CN201821918513.0U CN201821918513U CN209150914U CN 209150914 U CN209150914 U CN 209150914U CN 201821918513 U CN201821918513 U CN 201821918513U CN 209150914 U CN209150914 U CN 209150914U
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Abstract
The utility model discloses a kind of IE4 efficiency grade low-voltage heavy-duty motors, including axis, before axis, both ends are arranged with fore bearing assembly and rear bearing assembly respectively afterwards, drive end bearing bracket and rear end cap are respectively arranged on fore bearing assembly and rear bearing fit on, base is equipped between drive end bearing bracket and rear end cap, there are wound stator iron core and cast-aluminum rotor in base, cast-aluminum rotor is set on axis, it is characterized in that, base and rear end cap are set in fan housing, external fan is equipped in fan housing, external fan is between fan housing and rear end cap, outer ventilation circuit is formed by the outer tunnel outside external fan and base；Internal fan is equipped in base, internal fan forms interior wind path between rear end cap and cast-aluminum rotor, by the internal channel in internal fan and base.The utility model is by optimization electric machine structure, so that product efficiency grade has reached IE4 efficiency grade, using many kinds of measures, reduces the loss of electric machine, improves electric efficiency, reduce material cost 10%-15%, efficiency improves 1% or so.
Description
Technical field
The utility model relates to a kind of low-voltage high-power motor more particularly to a kind of high-power electricity of IE4 efficiency grade low-voltage
Machine belongs to middle and small motor field.
Background technique
Electromechanics trade is play an important role in Chinese national economy, and according to statistics, it is total that motor total power consumption accounts for about the whole society
The 64% of electricity consumption, wherein industrial circle motor total electricity consumption accounts for about the 75% of commercial power, and industrial circle motor energy efficiency often mentions
High one percentage point, can 26,000,000,000 kilowatt hour of year using electricity wisely or so, therefore energy-saving efficient motor is that state key supports development
Direction.With the publication of IEC60034-30-1:2014 standard, IE4 level of efficiency is the highest three-phase alternating current of current global range
Motor efficiency grade.
Raising of the three-phase alternating-current motor IE4 compared with IE3 level of efficiency is much larger than the amplitude from IE2 to IE3.IEC tissue is done
This decision out, mainly consideration IE4 level of efficiency should be realized with permanent magnet motor mode, be reached to asynchronous motor
For IE4 level of efficiency, quite high difficulty is just brought.And for heavy-duty motor, efficiency itself is just very high, efficiency
The space of raising is little, therefore reaches IE4 efficiency grade and have very big difficulty.
Summary of the invention
The purpose of this utility model is: improving the electric efficiency of existing low-voltage high-power motor.
In order to achieve the above object, there is provided a kind of big function of IE4 efficiency grade low-voltage for the technical solution of the utility model
Rate motor, including axis, the front and rear ends of axis are arranged with fore bearing assembly and rear bearing assembly, drive end bearing bracket and rear end cap point respectively
Not She Yu fore bearing assembly and rear bearing fit on, base is equipped between drive end bearing bracket and rear end cap, has in base winding to determine
Sub- iron core and cast-aluminum rotor, cast-aluminum rotor are set on axis, have wound stator iron core to be set to outside cast-aluminum rotor, which is characterized in that
Base and rear end cap are set in fan housing, and external fan is equipped in fan housing, external fan positioned at fan housing and rear end cap between, by external fan and
Outer tunnel outside base forms outer ventilation circuit；
Internal fan is equipped in base, internal fan is between rear end cap and cast-aluminum rotor, in internal fan and base
Channel forms interior wind path；
The wall thickness of base front and rear ends is thick compared with the wall thickness at middle part, and the front and rear ends on the inside of base are respectively equipped with radiating ribs.
Preferably, described to have wound stator iron core using the double-deck unequal turns winding.
Preferably, the rotor punching in the cast-aluminum rotor uses closed slot punching.
Preferably, the bridge arch height of the closed slot punching is between 0.2mm~1mm.
Preferably, described to there is wound stator iron core to include the double-deck unequal turns winding, interlayer is equipped in the double-deck unequal turns winding
Insulation, the double-deck unequal turns winding outer circumference surface are equipped with slot insulation, and slot insulation bottom is equipped with slot wedge.
The utility model is by optimization electric machine structure, so that product efficiency grade has reached IE4 efficiency grade, use is a variety of
Measure reduces the loss of electric machine, improves electric efficiency, reduces material cost 10%-15%, and efficiency improves 1% or so.
Detailed description of the invention
Fig. 1 is the cross-sectional view of IE4 efficiency grade low-voltage heavy-duty motor main view；
Fig. 2 is IE4 efficiency grade low-voltage heavy-duty motor insulation system.
Specific embodiment
The present invention will be further illustrated below in conjunction with specific embodiments.It should be understood that these embodiments are merely to illustrate this
Utility model rather than limitation the scope of the utility model.In addition, it should also be understood that, in the content for having read the utility model instruction
Later, those skilled in the art can make various changes or modifications the utility model, and such equivalent forms equally fall within this Shen
It please the appended claims limited range.
As shown in Figure 1, a kind of IE4 efficiency grade low-voltage heavy-duty motor provided by the utility model includes fore bearing assembly
1, drive end bearing bracket 2, axis 3, base 4, have wound stator iron core 5, be cast-aluminum rotor 6, internal fan 7, rear bearing assembly 8, rear end cap 9, outer
Fan 10 and fan housing 11.
Outer ventilation circuit is formed by the outer tunnel outside external fan 10 and base 4, is made of internal fan 7 and the internal channel in base 4
Interior wind path, outer ventilation circuit and interior wind path belong to axial ventilation structure.The utility model is conducive to dissipating for motor using double wind path structures
Heat.
Base 4 uses the wall thickness of front and rear ends compared with the dumbbell shape structure of the wall thickness thickness at middle part.Meanwhile in 4 inside of base
Front and rear ends radiating ribs are respectively set.This dumbbell shape structure is more advantageous to cooling wind sufficient heat exchange, improves heat dissipation effect
Rate reduces stator copper loss and temperature rise.
There is wound stator iron core 5 using the double-deck unequal turns winding, improve air gap waveform, reduces motor stator copper loss and spuious
Loss.Its insulation system is illustrated in figure 2 thinned insulation system, and insulation is thinned 20% or so, including slot wedge 12, bilayer differ
Circle winding 13, layer insulation 14, slot insulation 15.Thinned insulation system improves the use of effective material, reduces stator copper
Consumption, improves product efficiency, product efficiency grade reaches IE4 efficiency grade.
The electromagnetic wire of the double-deck unequal turns winding 13 uses " 180 grades of polyesterimide enameled copper round wire " (GB/T of QZY-2/180
6109.5) or experiment proves that the temperature classification crossed is at or above 180 grades of enamelling cuprum round line.
Film, fibrous paper or cloth composite flexible material of the slot insulation 15 using the class of insulation higher than 155 grades are (as used Du Pont
864 NMN etc.), mylar thickness should be not less than 0.075mm in composite material, and performance should meet wanting for GB/T 5591.3
It asks.
Slot wedge 12 is using polyester glass fiber drawing groove wedge or epoxy glass fiber drawing groove wedge or 3240 epoxy novolac layers
It presses glass-cloth board slot wedge (JB/T 10508).12 length of slot wedge is 4~6mm shorter than corresponding slot insulation 15,12 underlay slot insulation of slot wedge
Lid, length are identical as slot insulation 15, it is also possible to which slot insulation rolls over packet substitution slot insulation lid at notch.
There is wound stator iron core 5 using leaching baking processing: to commonly technique is immersed, drying or adopt using the secondary leaching of solvent-free paint
It is baked and banked up with earth with a dipping lacquer rotation；To vacuum impregnation, primary leaching baking technique can be used using solvent-free paint and reduce the row of pollutant
It puts, reaches environmentally protective technique requirement.
Rotor punching in cast-aluminum rotor 6 uses closed slot punching, and closed slot bridge arch height is between 0.2mm~1mm.Axis
3 are keyed with cast-aluminum rotor 6 using straight trough, for reducing stray loss, improve the performance of motor.
The requirement of 1 part typical case's electromagnetic wire format technology of table
Claims (5)
1. a kind of IE4 efficiency grade low-voltage heavy-duty motor, including axis (3), the front and rear ends of axis (3) are arranged with front axle respectively
It installs with (1) and rear bearing assembly (8), drive end bearing bracket (2) and rear end cap (9) are respectively arranged on fore bearing assembly (1) and rear axle installation
With on (8), be equipped with base (4) between drive end bearing bracket (2) and rear end cap (9), have in base (4) wound stator iron core (5) and
Cast-aluminum rotor (6), cast-aluminum rotor (6) are set on axis (3), have wound stator iron core (5) to be set to cast-aluminum rotor (6) outside, special
Sign is that base (4) and rear end cap (9) are set in fan housing (11), is equipped with external fan (10) in fan housing (11), external fan (10) position
Between fan housing (11) and rear end cap (9), outer ventilation circuit is formed by external fan (10) and the outer tunnel of base (4) outside；
Internal fan (7) are equipped in base (4), internal fan (7) is located between rear end cap (9) and cast-aluminum rotor (6), by internal fan
(7) wind path in being formed with the internal channel in base (4)；
The wall thickness of base (4) front and rear ends is thick compared with the wall thickness at middle part, and the front and rear ends on the inside of base (4) are respectively equipped with heat dissipation
Muscle.
2. a kind of IE4 efficiency grade low-voltage heavy-duty motor as described in claim 1, which is characterized in that described to have winding fixed
Sub- iron core (5) is using the double-deck unequal turns winding.
3. a kind of IE4 efficiency grade low-voltage heavy-duty motor as described in claim 1, which is characterized in that the cast-aluminum rotor
(6) rotor punching in uses closed slot punching.
4. a kind of IE4 efficiency grade low-voltage heavy-duty motor as claimed in claim 3, which is characterized in that the closed slot punching
The bridge arch height of piece is between 0.2mm~1mm.
5. a kind of IE4 efficiency grade low-voltage heavy-duty motor as described in claim 1, which is characterized in that described to have winding fixed
Sub- iron core (5) includes the double-deck unequal turns winding (13), is equipped with layer insulation (14) in the double-deck unequal turns winding (13), bilayer differs
Circle winding (13) outer circumference surface is equipped with slot insulation (15), and slot insulation (15) bottom is equipped with slot wedge (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821918513.0U CN209150914U (en) | 2018-11-20 | 2018-11-20 | IE4 efficiency grade low-voltage heavy-duty motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821918513.0U CN209150914U (en) | 2018-11-20 | 2018-11-20 | IE4 efficiency grade low-voltage heavy-duty motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209150914U true CN209150914U (en) | 2019-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821918513.0U Active CN209150914U (en) | 2018-11-20 | 2018-11-20 | IE4 efficiency grade low-voltage heavy-duty motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256901A (en) * | 2018-11-20 | 2019-01-22 | 上海电机系统节能工程技术研究中心有限公司 | A kind of IE4 efficiency grade low-voltage heavy-duty motor |
-
2018
- 2018-11-20 CN CN201821918513.0U patent/CN209150914U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256901A (en) * | 2018-11-20 | 2019-01-22 | 上海电机系统节能工程技术研究中心有限公司 | A kind of IE4 efficiency grade low-voltage heavy-duty motor |
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