CN103855829A - Liquid-cooled electromagnetic induction speed regulator - Google Patents
Liquid-cooled electromagnetic induction speed regulator Download PDFInfo
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- CN103855829A CN103855829A CN201410088537.8A CN201410088537A CN103855829A CN 103855829 A CN103855829 A CN 103855829A CN 201410088537 A CN201410088537 A CN 201410088537A CN 103855829 A CN103855829 A CN 103855829A
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Abstract
The invention provides a liquid-cooled electromagnetic induction speed regulator which can meet the requirement for heat dissipation of a large-power electromagnetic induction speed regulator. The electromagnetic induction speed regulator can be applied in a large-power motor system. The liquid-cooled electromagnetic induction speed regulator comprises a driving rotor and a driven rotor. The driven rotor is in sliding connection with an output shaft in the axial direction. The driving rotor and the driven rotor are located inside a machine shell. A fan cover comprises an annular plate and a cylinder. A fan blade is located between one end of the driving rotor and the annular plate. An air inlet opposite to an air gap is formed in one end of the driving rotor. An air inlet channel is formed between the cylinder and the driving rotor. When the fan blade and the fan cover rotate along with the driving rotor, one part of air enters the air gap through the air inlet to be blown to the other end of the driving rotor, and the other part of air is blown to the other end of the driving rotor along the periphery of the driving rotor through the air inlet channel. A water outlet opposite to the periphery of the driving rotor is formed in a cooling liquid box on the machine shell. A water leakage hole communicating the periphery of the driving rotor with the air gap is formed in the driving rotor.
Description
Technical field
This technology relates to a kind of electromagnetic induction governor, especially a kind of with liquid-cooled electromagnetic induction governor.
Background technology
At present such as, at large size industrial enterprise, in the industries such as chemical industry, cement, metallurgy, due to the needs in the technological process of production and energy-conservation object, during a large amount of frequency converters is applied to producing.Wherein, the motor more than 200 kilowatts is mostly high-voltage motor.Especially the motor of rated power more than 400 kilowatts, voltage is all 6000V or 10000V substantially.The high voltage converter that high-voltage motor is joined has shortcomings, mainly comprises: system complex, difficult in maintenance and costly.In addition, the harmonic wave of its generation also can pollute electrical network.
For electromagnetic induction governor, because it is simple in structure, easy to maintenance and safe and reliable, can replace high voltage converter completely.But the power of Wind-cooling type electromagnetic induction energy-saving governor maximum adaptation motor is generally at 355 kilowatts.As the power of motor is greater than 355 kilowatts, its permanent magnet has higher demagnetization risk, inapplicable in industrialization is produced continuously.
Summary of the invention
This technology provides a kind of liquid-cooled electromagnetic induction governor, and the heat radiation requirement that it can meet large power, electrically magnetic induction governor can be applicable in heavy-duty motor system electromagnetic induction governor.
The liquid-cooled electromagnetic induction governor of this technology, comprises mainly by power shaft, the driving rotor portion that drives rotor, induction copper ring, magnetic conduction steel loop forms, mainly by driven that rotor, permanent magnet, output shaft form by driving rotor portion; Permanent magnet is spaced at and is driven rotor periphery, with drive rotor coaxial line driven rotor and output shaft to become power transmission in the circumference to be connected, to be slidably connected at axial one-tenth; Be arranged on the interior Zhou Youyu permanent magnet of the driving rotor on power shaft at radially relative magnetic conduction steel loop, induction copper ring is installed in magnetic conduction steel loop in week; It also comprises for regulating the adjusting device by driving rotor with respect to the axial location of output shaft; Drive rotor and driven rotor to be positioned at a casing, power shaft and output shaft all rotate and are arranged on casing; Fan housing comprises the ring flat-plate radially extending and the cylinder extending vertically, and outer ring and the cylinder of ring flat-plate join; Driving between rotor one end and ring flat-plate along the flabellum that drives rotor radial to extend; On driving rotor one end relative with ring flat-plate, have air inlet, air inlet is relative with the air gap between induction copper ring and permanent magnet; Cylinder ring around drive rotor periphery and and drive between rotor and have inlet channel; When flabellum and fan housing rotate with driving rotor, the wind that flabellum produces, a part enters described air gap through air inlet, blows to the other end that drives rotor; Another part blows to along driving rotor periphery the other end that drives rotor through inlet channel; Be provided with tank for coolant on casing top, tank for coolant bottom has the apopore relative with driving rotor periphery; Have cooling liquid outlet in casing bottom; On driving rotor, have a leaking hole that drives rotor periphery to communicate with described air gap.
When this technical work, power shaft connects with prime mover, and output shaft is connected with load, is driven and is driven rotor to do axially reciprocating, thereby make permanent magnet reciprocating motion vertically by adjusting device.So, magnetic flux on induction copper ring change, in induction copper ring, inducing eddy-current power changes, the magnetic field power that vortex flow produces is along with changing, the magnetic field that vortex flow produces and the magnetic field interaction force of permanent magnet be also along with change, and then realize the object of regulation output torque, power output and rotating speed.In tank for coolant, cooling fluid is due to Action of Gravity Field, the apopore of the part that can be connected with casing through tank for coolant, part cooling fluid drops on driving rotor outer surface, and another part cooling fluid, by driving epitrochanterian leaking hole, continues to fall to by driving rotor outer surface subsequently.Outwards throw away owing to driving rotor and can be made to invest its surperficial cooling fluid drop by the centrifugal force that drives rotor to produce when rotated, have the drop that amount of heat is thrown out of to take away.Meanwhile, the wind that flabellum produces, a part of wind enters air gap through air inlet, blows to the other end that drives rotor; Another part wind blows to along driving rotor periphery the other end that drives rotor through inlet channel.Cooling fluid, under wind action, circumferentially drives the other end of rotor to move with the wind outside air gap, driving rotor, has accelerated driving the cooling of rotor and quilt driving rotor.Finally, cooling fluid flows to bottom of shell under Action of Gravity Field, flows out through cooling liquid outlet.Through test, what adopt this technology is the liquid-cooled electromagnetic induction governor of 500 kilowatts for power, at water during as cooling fluid, flow be 12-15 ton/hour, permanent magnet temperature is the highest at 80 ℃, has prevented the demagnetization of permanent magnet.
Above-mentioned liquid-cooled electromagnetic induction governor is provided with the reflecting plate of ring-type in casing, and the outer ring of reflecting plate contacts with casing inner wall, a side of reflecting plate with drive the other end of rotor relative; The outer ring of reflecting plate, with respect to inner ring, tilts to driving rotor one end that flabellum is installed; Blow to and drive the wind of the rotor other end after reflecting plate guiding, enter the space driving between rotor and casing inner wall.The drop that part throws away will reflux under the effect of reflecting plate.Due to reflecting plate being set, the part cooling fluid of arrival driving rotor one end after reflecting plate guiding, enters the space driving between rotor and casing inner wall again, can be again to driving rotor carry out cooling.Through test, what adopt this technology is the liquid-cooled electromagnetic induction governor of 500 kilowatts for power, at water during as cooling fluid, flow be 12-15 ton/hour, permanent magnet temperature is the highest at 75 ℃.
Above-mentioned liquid-cooled electromagnetic induction governor, power shaft, output shaft are rotated and are arranged on casing by power shaft bearing sleeve, output shaft bearing sleeve respectively, and the power shaft end of stretching in casing has supported hole; The output shaft end stretching in casing is rotatably supported in described supported hole by spring bearing; Also be provided with outstanding throw rijng and sealing ring near on the output shaft of spring bearing; Ring set is fixed on power shaft bearing sleeve or casing; The endoporus of ring set is taper, and the small end of endoporus is towards spring bearing; Throw rijng and sealing ring are positioned at endoporus.One end of output shaft is supported on power shaft, has reduced the vibration of unit.Meanwhile, throw rijng and sealing ring are set, prevent that cooling fluid from entering spring bearing; In addition, cooling fluid is thrown to after the endoporus of ring set by throw rijng and sealing ring, and cooling fluid can flow by the large end along inner hole wall to endoporus, has further prevented that cooling fluid from entering spring bearing.
Above-mentioned liquid-cooled electromagnetic induction governor, magnetic conduction steel loop and induction copper ring are all tapered, and quantity communicates, and all have 3-6, are spaced along the axis that drives rotor; Magnetic conduction steel loop and the induction bus of copper ring and the angle α of axis are 1 °≤α≤8 °; Reflecting plate is positioned at the large end of induction copper ring.Magnetic conduction steel loop and the induction bus of copper ring and the angle α of axis, make cooling fluid under the effect of wind-force, can flow to the large extreme direction of induction copper ring smoothly, prevents the generation of liquid film, strengthened cooling effect.Through test, what adopt this technology is the liquid-cooled electromagnetic induction governor of 500 kilowatts for power, at water during as cooling fluid, flow be 12-15 ton/hour, permanent magnet temperature is the highest at 70 ℃.Best, being spaced at the permanent magnet being driven on the same cross section of rotor is a set of permanent magnets ring, and set of permanent magnets ring is spaced along the axis that is driven rotor, and the quantity of set of permanent magnets ring equates with magnetic conduction steel loop; Set of permanent magnets ring is oppositely arranged with induction copper ring.
Above-mentioned liquid-cooled electromagnetic induction governor, drives rotor outer ring to adopt stainless steel.
Above-mentioned liquid-cooled electromagnetic induction governor, communicates with tank for coolant by transfer pipeline at cooling liquid outlet, arranges cooling fluid is carried out to cooling heat exchanger on transfer pipeline.Like this, be reusable edible to cooling fluid.
Accompanying drawing explanation
Fig. 1 is the structural representation of this technology.
Fig. 2 is the partial enlarged drawing in Fig. 1.
Fig. 3 is flabellum, fan housing etc. and the schematic diagram that drives rotor to be connected.
Fig. 4 is casing structure schematic diagram.
In figure: casing 1, reflecting plate 2, tank for coolant 3, cooling liquid inlet 4, drive rotor 5, magnetic conduction steel loop 6, induction copper ring 7, permanent magnet 8, driven rotor 9, power shaft 10, throw rijng 11, ring set 12, sealing ring 13, cooling fluid atomization fan 14, cooling fluid feeder 15, cooling liquid outlet 16, speed governing pull bar 17, spline housing 18, locating slide sleeve 19, output shaft 20, output shaft bearing sleeve 21, power shaft bearing sleeve 23, spring bearing 24, flabellum 25, ring flat-plate 26, cylinder 27, air inlet 28, inlet channel 29, air gap 30, leaking hole 32.
Embodiment
Below in conjunction with the drawings and specific embodiments, this technology is described in further detail.
It should be noted that the illustrated mechanism of Figure of description, ratio, size only, to coordinate embodiment, more clearly understand the design of this technology, not in order to limit the protection range of this technology for those skilled in the art.The adjustment of the modification of any structure, the change of proportionate relationship or size, in the case of effect and object of not affecting this technology, all should still be included in the protection range of this technology.
As shown in Figure 1, casing 1 top is provided with tank for coolant 3 to the concrete structure of the present embodiment, and cooling liquid inlet 4 is opened on tank for coolant.Casing 1 bottom is provided with cooling fluid feeder 15, cooling liquid outlet 16.On the interior power shaft 10 of casing 1, have ring set endoporus 12, install and drive rotor 5, drive in rotor 5 and be provided with magnetic conduction steel loop 6 and induction copper ring 7, there is cooling fluid atomization fan 14 on right side, and there is reflecting plate 2 in left side.There are throw rijng 11, sealing ring 13 in output shaft 20 right sides, left side is provided with locating slide sleeve 19, output shaft bearing sleeve 21, output shaft bearing sleeve 21 outsides are provided with speed governing pull bar 17, be provided with and driven rotor 9 on middle spline housing 18, are driven rotor 9 outer surfaces to be spaced permanent magnet 8.
Liquid-cooled electromagnetic induction governor as shown in Figure 1, comprises mainly by power shaft, the driving rotor portion that drives rotor, induction copper ring, magnetic conduction steel loop forms, mainly by driven that rotor, permanent magnet, output shaft form by driving rotor portion.
Set of permanent magnets ring has three, that each set of permanent magnets ring is equated by quantity, be spaced at and driven the permanent magnet 8 of rotor periphery to form, and set of permanent magnets ring arranges along the circumferential interval that is driven rotor.With drive rotor coaxial line driven rotor to become power transmission in the circumference by spline housing and output shaft to be connected, to be slidably connected at axial one-tenth.
Be arranged on the interior Zhou Youyu set of permanent magnets ring of the driving rotor on power shaft at three radially relative magnetic conduction steel loops, induction copper ring is installed in magnetic conduction steel loop in week; Magnetic conduction steel loop and induction copper ring are all tapered, and all have 3, are spaced along the axis that drives rotor.Magnetic conduction steel loop and the induction bus of copper ring and the angle α of axis (1 °≤α≤8 °).In figure, the large end of magnetic conduction steel loop and induction copper ring is in left side.
Drive rotor and driven rotor to be positioned at casing, power shaft, output shaft are rotated and are arranged on casing by power shaft bearing sleeve, output shaft bearing sleeve respectively.The power shaft end of stretching in casing has supported hole; The output shaft end stretching in casing is rotatably supported in described supported hole by spring bearing.Also be provided with outstanding throw rijng and sealing ring near on the output shaft of spring bearing; Ring set is fixed on a side of power shaft bearing sleeve; The endoporus of ring set is taper, and the small end of endoporus is towards spring bearing; Throw rijng and sealing ring are positioned at endoporus.
Cooling fluid atomization fan comprises fan housing and flabellum.Cooling fluid atomization fan is located at and is driven rotor right side local parcel to drive rotor outer surface.Fan housing comprises the ring flat-plate radially extending and the cylinder extending vertically, and outer ring and the cylinder of ring flat-plate join; Driving between rotor right-hand member and ring flat-plate along the flabellum that drives rotor radial to extend; The inner of flabellum exceeds ring flat-plate inner ring, and the outer end of flabellum exceeds and drives the periphery of rotor to contact with cylinder inner wall.On the driving rotor right side relative with ring flat-plate, have air inlet, air inlet is relative with the air gap between induction copper ring and permanent magnet; Cylinder ring around drive rotor periphery and and drive between rotor periphery and have inlet channel; When flabellum and fan housing rotate with driving rotor, the wind that flabellum produces, a part enters described air gap through air inlet, blows to and drives rotor left end; Another part drives rotor left end through inlet channel along driving rotor periphery to blow to.
Be provided with tank for coolant on casing top, tank for coolant bottom has the apopore relative with driving rotor periphery; Be provided with cooling fluid feeder at bottom of shell.Leaking hole is opened and is being driven on rotor, and between adjacent two magnetic conduction steel loops.Leaking hole is driving rotor periphery to communicate with air gap.
In casing, be provided with the reflecting plate of ring-type, the outer ring of reflecting plate contacts with casing inner wall, and the right side of reflecting plate is relative with the left end of driving rotor; The outer ring of reflecting plate, with respect to inner ring, tilts to the driving rotor left end that flabellum is installed; Blow to and drive the wind of rotor left end after reflecting plate guiding, enter the space driving between rotor and casing inner wall.
For regulating by the adjusting device that drives rotor with respect to the axial location of output shaft, comprise speed governing pull bar 17, spline housing 18, locating slide sleeve 19 etc.Locating slide sleeve 19 coordinates by sliding pair with output shaft bearing sleeve.The periphery of spline housing 18 is rotated and is arranged in locating slide sleeve 19 by bearing.Speed governing pull bar 17 is fixed on locating slide sleeve 19.Pull locating slide sleeve 19 along axially the moving with respect to output shaft bearing sleeve of output shaft by speed governing pull bar 17, spline housing 18 and the rotor that driven on being fixed on spline housing 18 just moving axially together with locating slide sleeve 19.
The present embodiment course of work is as follows: power shaft 10 connects with prime mover, and output shaft 20 connects with load, drives locating slide sleeve 19 to do axially reciprocating, thereby make to be driven rotor 9 reciprocating motion vertically by the motion of speed governing pull bar 17.So, magnetic flux on induction copper ring 7 change, in induction copper ring 7, inducing eddy-current is along with magnetic flux size variation power changes, the magnetic field power that vortex flow produces is along with changing, the magnetic field that vortex flow produces and the magnetic field interaction force of permanent magnet 8 be also along with change, and then realize the object of output torque, power output and the rotating speed of regulating load.In tank for coolant 3, cooling fluid is due to Action of Gravity Field, can be through be connected with the casing apopore of part of tank for coolant, and a part drops on and drives rotor 5 outer surfaces, and another part, by driving epitrochanterian leaking hole, continues to fall to by driving rotor 9 outer surfaces subsequently.Outwards throw away owing to driving rotor 5 and can be made to invest its surperficial drop by the centrifugal force that drives rotor 9 to produce when rotated, have the drop that amount of heat is thrown out of to take away.The drop that part throws away refluxes under the effect of reflecting plate 2.Part cooling fluid is again by after sucking with the cooling fluid atomization fan 14 that drives rotor 5 to be synchronized with the movement, and under airflow function, a part enters and drives rotor 5 and driven in the air gap of rotor 9, and another part enters the outer surface that drives rotor 5.The cooling fluid that all the other liquid atomization fans 14 that are not cooled suck flows in the cooling fluid feeder 15 of bottom of shell under Action of Gravity Field, and cooling fluid is sent back to tank for coolant 3 after heat exchanger.
Be the liquid-cooled electromagnetic induction governor of 500 kilowatts for power, at water, during as cooling fluid, flow is 13 tons/hour, and permanent magnet temperature is the highest at 70 ℃.
Below be only the concrete exemplary applications of this technology, the protection range of this technology is not constituted any limitation.In addition to the implementation, this technology can also have other execution mode.All technical schemes that adopts equivalence replacement or equivalent transformation to form, all drop in the claimed scope of this technology.
Claims (7)
1. liquid-cooled electromagnetic induction governor, comprises mainly by power shaft, the driving rotor portion that drives rotor, induction copper ring, magnetic conduction steel loop forms, mainly by driven that rotor, permanent magnet, output shaft form by driving rotor portion; Permanent magnet is spaced at and is driven rotor periphery, with drive rotor coaxial line driven rotor and output shaft to become power transmission in the circumference to be connected, to be slidably connected at axial one-tenth; Be arranged on the interior Zhou Youyu permanent magnet of the driving rotor on power shaft at radially relative magnetic conduction steel loop, induction copper ring is installed in magnetic conduction steel loop in week; It also comprises for regulating the adjusting device by driving rotor with respect to the axial location of output shaft; It is characterized in that: drive rotor and driven rotor to be positioned at a casing, power shaft and output shaft all rotate and be arranged on casing; Fan housing comprises the ring flat-plate radially extending and the cylinder extending vertically, and outer ring and the cylinder of ring flat-plate join; Driving between rotor one end and ring flat-plate along the flabellum that drives rotor radial to extend; On driving rotor one end relative with ring flat-plate, have air inlet, air inlet is relative with the air gap between induction copper ring and permanent magnet; Cylinder ring around drive rotor periphery and and drive between rotor and have inlet channel; When flabellum and fan housing rotate with driving rotor, the wind that flabellum produces, a part enters described air gap through air inlet, blows to the other end that drives rotor; Another part blows to along driving rotor periphery the other end that drives rotor through inlet channel; Be provided with tank for coolant on casing top, tank for coolant bottom has the apopore relative with driving rotor periphery; Have cooling liquid outlet in casing bottom; On driving rotor, have a leaking hole that drives rotor periphery to communicate with described air gap.
2. liquid-cooled electromagnetic induction governor as claimed in claim 1, is characterized in that: in casing, be provided with the reflecting plate of ring-type, the outer ring of reflecting plate contacts with casing inner wall, and a side of reflecting plate is relative with the other end of driving rotor; The outer ring of reflecting plate, with respect to inner ring, tilts to driving rotor one end that flabellum is installed; Blow to and drive the wind of the rotor other end after reflecting plate guiding, enter the space driving between rotor and casing inner wall.
3. liquid-cooled electromagnetic induction governor as claimed in claim 2, is characterized in that: power shaft, output shaft are rotated and are arranged on casing by power shaft bearing sleeve, output shaft bearing sleeve respectively, and the power shaft end of stretching in casing has endoporus; The output shaft end stretching in casing is rotatably supported in described endoporus by spring bearing; Also be provided with outstanding throw rijng and sealing ring near on the output shaft of spring bearing; Ring set is fixed on power shaft bearing sleeve or casing; The endoporus of ring set is taper, and the small end of endoporus is towards spring bearing; Throw rijng and sealing ring are positioned at endoporus.
4. liquid-cooled electromagnetic induction governor as claimed in claim 2 or claim 3, is characterized in that: magnetic conduction steel loop and induction copper ring are all tapered, and quantity communicates, and all has 3-6, is spaced along the axis that drives rotor; Magnetic conduction steel loop and the induction bus of copper ring and the angle α of axis are 1 °≤α≤8 °; Reflecting plate is positioned at the large end of induction copper ring.
5. liquid-cooled electromagnetic induction governor as claimed in claim 4, it is characterized in that: being spaced at the permanent magnet being driven on the same cross section of rotor is a set of permanent magnets ring, set of permanent magnets ring is spaced along the axis that is driven rotor, and the quantity of set of permanent magnets ring equates with magnetic conduction steel loop; Set of permanent magnets ring is oppositely arranged with induction copper ring.
6. the liquid-cooled electromagnetic induction governor as described in claim 1,2 or 3, is characterized in that: drive rotor outer ring to adopt stainless steel.
7. the liquid-cooled electromagnetic induction governor as described in claim 1,2 or 3, is characterized in that: communicate with tank for coolant by transfer pipeline at cooling liquid outlet, arrange cooling fluid is carried out to cooling heat exchanger on transfer pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410088537.8A CN103855829B (en) | 2014-03-12 | 2014-03-12 | Liquid-cooled electromagnetic induction governor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410088537.8A CN103855829B (en) | 2014-03-12 | 2014-03-12 | Liquid-cooled electromagnetic induction governor |
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| Publication Number | Publication Date |
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| CN103855829A true CN103855829A (en) | 2014-06-11 |
| CN103855829B CN103855829B (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410088537.8A Expired - Fee Related CN103855829B (en) | 2014-03-12 | 2014-03-12 | Liquid-cooled electromagnetic induction governor |
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| CN (1) | CN103855829B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972712A (en) * | 2016-05-18 | 2016-09-28 | 胡振强 | Simple heat exchanger for outdoor unit of air conditioner |
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| JPS5439754A (en) * | 1977-09-02 | 1979-03-27 | Shinko Electric Co Ltd | Cooling structure of eddy current coupling |
| JPS5833966A (en) * | 1981-08-21 | 1983-02-28 | Shinko Electric Co Ltd | Air-and water-cooled composite cooling type eddy current joint |
| CN201298803Y (en) * | 2008-04-30 | 2009-08-26 | 江苏银茂控股（集团）有限公司 | Speed regulation shaft coupling |
| EP2275701A2 (en) * | 2009-07-13 | 2011-01-19 | LICOS Trucktec GmbH | Electromagnetic friction coupling |
| CN201805342U (en) * | 2010-09-26 | 2011-04-20 | 南京大寰控制***有限公司 | Water cooling system for cylindrical permanent magnet speed regulation device |
| CN102157997A (en) * | 2011-01-26 | 2011-08-17 | 高超 | Permanent magnet governor with cooling fan cover |
| CN203747529U (en) * | 2014-03-12 | 2014-07-30 | 江苏银茂控股（集团）有限公司 | Liquid cooling type electromagnetic induction speed regulation machine |
-
2014
- 2014-03-12 CN CN201410088537.8A patent/CN103855829B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5439754A (en) * | 1977-09-02 | 1979-03-27 | Shinko Electric Co Ltd | Cooling structure of eddy current coupling |
| JPS5833966A (en) * | 1981-08-21 | 1983-02-28 | Shinko Electric Co Ltd | Air-and water-cooled composite cooling type eddy current joint |
| CN201298803Y (en) * | 2008-04-30 | 2009-08-26 | 江苏银茂控股（集团）有限公司 | Speed regulation shaft coupling |
| EP2275701A2 (en) * | 2009-07-13 | 2011-01-19 | LICOS Trucktec GmbH | Electromagnetic friction coupling |
| CN201805342U (en) * | 2010-09-26 | 2011-04-20 | 南京大寰控制***有限公司 | Water cooling system for cylindrical permanent magnet speed regulation device |
| CN102157997A (en) * | 2011-01-26 | 2011-08-17 | 高超 | Permanent magnet governor with cooling fan cover |
| CN203747529U (en) * | 2014-03-12 | 2014-07-30 | 江苏银茂控股（集团）有限公司 | Liquid cooling type electromagnetic induction speed regulation machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972712A (en) * | 2016-05-18 | 2016-09-28 | 胡振强 | Simple heat exchanger for outdoor unit of air conditioner |
| CN105972712B (en) * | 2016-05-18 | 2018-10-30 | 谢曙晖 | Reduced form outdoor machine of air-conditioner heat exchanger |
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| Publication number | Publication date |
|---|---|
| CN103855829B (en) | 2016-01-13 |
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Effective date of registration: 20190423 Address after: 210000 No. 89 Qixia Street, Nanjing, Jiangsu Province Patentee after: Nanjing Yinmao permanent magnet energy technology Co.,Ltd. Address before: 210002 44th Floor, Block A, New Century Plaza, 288 Zhongshan East Road, Nanjing, Jiangsu Province Co-patentee before: Gao Chao Patentee before: JIANGSU YINMAO HOLDING GROUP Co.,Ltd. |
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Granted publication date: 20160113 |
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