CN101127469A - A cooling system for permanent magnetic generator - Google Patents
A cooling system for permanent magnetic generator Download PDFInfo
- Publication number
- CN101127469A CN101127469A CNA2007100237835A CN200710023783A CN101127469A CN 101127469 A CN101127469 A CN 101127469A CN A2007100237835 A CNA2007100237835 A CN A2007100237835A CN 200710023783 A CN200710023783 A CN 200710023783A CN 101127469 A CN101127469 A CN 101127469A
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- CN
- China
- Prior art keywords
- permanent magnet
- engine
- rotor
- magnet generator
- generator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1815—Rotary generators structurally associated with reciprocating piston engines
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
- F02B63/042—Rotating electric generators
Abstract
The utility model relates to a cooling system of permanent magnet generators, in particular to a cooling system of high power permanent magnet generators, which comprises an engine and a permanent magnet generator; wherein, the stator of the permanent magnet generator is arranged on the flywheel casing of the engine; the rotor of the permanent magnet generator is arranged on the crank shaft of the engine. The utility model is characterized in that: the end with fan blades of the rotor is connected with the crank shaft of the engine; the fan blades connected with the rotor are arranged between the flywheel casing of the engine and the permanent magnet generator. The rotor and the stator of the permanent magnet generator are forcibly cooled by the cooling wind generated by the fan blades, which are driven by the rotation of the rotor, The heat transferred towards the permanent magnet of the rotor from the stator is reduced and the effect is good. The cooling efficiency of the stator coil of the permanent magnet generator and the permanent magnet rotor can be greatly improved without increasing the overall size of the generator set, thus ensuring the reliability of the continuous operation, and prolonging the service life of the permanent magnet generator.
Description
Technical field
The present invention relates to a kind of cooling system of permanent magnet generator, especially the cooling system of high-power permanent magnet generator.
Background technology
In prior art, the digital permanent magnet generator of common diesel oil is when work, and the temperature of internal body is higher, high-power diesel digital electricity generating group particularly, and it disposed is permanent magnet generator.Owing to make every effort to the miniaturization of profile, generally be not with cooling fan, just come cooled electric generator by the air free flow in the cabinet, the generating set of this kind structure can not the long-time continuous operation.Since not to generator direct cooling, the heat that its stator coil produces can not be caused the also very fast rising of the rotor temperature rise that permanent magnet is housed by very fast discharge.For permanent magnet generator, temperature is the direct acting factor of decision permanent magnet performance.Institute thinks makes more stable, the minimizing irreversible change of permanent magnet performance when using, and temperature controlling is a problem that need are to be solved.
Be used for the rare earth permanent-magnetic material of generator at present, because sintered NdFeB has very big magnetic energy product and HCJ, so be widely adopted in the high-power permanent magnet generator, but the remanence temperature coefficient of sintered Nd-Fe-B permanent magnet (be-0.08%/℃～-0.13%/℃) with the HCJ temperature coefficient (for-0.5%/℃～-0.65%/℃) relative other permanent magnet is bigger, so temperature stability is poor, the stabilized operating temperature of sintered NdFeB is generally about 140 ℃.When the temperature of motor near or when surpassing this temperature, the permanent magnet in the motor easily produces the heat demagnetization, and this demagnetization to have be irreversible greatly, the power that so just produces common magneto descends, the performance reduction; On the other hand, the temperature of stator coil is too high, easily makes the insulation serious aging, greatly reduces the useful life of motor.Because the factor of this two aspect, and then influence the overall performance of whole unit.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point, thereby provide a kind of cooling system of permanent magnet generator, under the situation that unit overall structure size does not increase, can improve the cooling effectiveness of permanent magnet generator stator coil and permanent magnet rotor greatly, guarantee the reliability of the continuous firing of permanent magnet generator, and can prolong the useful life of permanent magnet generator.
Main solution of the present invention is achieved in that
The present invention mainly is made up of engine, flywheel shell of engine and permanent magnet generator, the permanent magnet generator machine stator is installed on the flywheel shell of engine, rotor of permanent-magnetic power generator is installed on the engine crankshaft, feature is that an end of rotor of permanent-magnetic power generator installation fan blade is connected with engine crankshaft, and the fan blade that is connected with rotor of permanent-magnetic power generator is arranged between flywheel shell of engine and the permanent magnet generator.
Described flywheel shell of engine periphery is provided with the vent more than two or two.
The groove that described flywheel shell of engine and permanent magnet generator stator outer diameter are provided with forms at least two vents along the stator outer diameter circumferencial direction.
Described rotor of permanent-magnetic power generator is provided with at least two fresh air inlets along the rotor axial direction.
Compared with the prior art the present invention has the following advantages:
The present invention mainly is the idle space that makes full use of between permanent magnet generator and bell housing, the epitrochanterian fan blade that is installed in permanent magnet generator is located at wherein, suck cold air from the ventilation hole of rotor, rotation by rotor drives the fan blade rotation, producing cooling air forces the rotor and the stator of permanent magnet generator are cooled off, keep happy air flows, reduce of the heat conduction of the heat of stator, have good air cooling effect permanent magnet on the rotor; The cooling air of fan blade generation is also taken away a part of heat that engine is passed to bell housing in addition, reduce the heat conduction of bell housing to generator, under the situation that unit overall structure size does not increase, can improve the cooling effectiveness of permanent magnet generator stator coil and permanent magnet rotor greatly, guarantee the reliability of the continuous firing of permanent magnet generator, and can prolong the useful life of permanent magnet generator.
Description of drawings
Fig. 1 is a permanent magnet generator cooling system axial section schematic diagram of the present invention.
Fig. 2 is the axial schematic diagram of permanent magnet generator cooling system of the present invention.
Fig. 3 is the vertical schematic diagram of permanent magnet generator cooling system of the present invention.
Embodiment
Embodiment during following the present invention incites somebody to action in conjunction with the accompanying drawings is further described:
The present invention mainly is made up of institutes such as engine 1, flywheel shell of engine 2, engine crankshaft 3, fan blade 4, rotor of permanent-magnetic power generator 5, permanent magnet generator machine stator 6, fresh air inlet 7, vent 8, vent 9, stator coil 10 and permanent magnet generatores 11.
The present invention mainly is made up of with permanent magnet generator 11 engine 1, flywheel shell of engine 2, permanent magnet generator machine stator 6 is installed on the flywheel shell of engine 2,6 of flywheel shell of engine 2 and permanent magnet generator machine stators leave the gap, and the external diameter of described flywheel shell of engine 2 is provided with the vent 8 more than at least two.Described flywheel shell of engine 2 forms at least two vents 9 along the stator outer diameter circumferencial direction with the groove that permanent magnet generator machine stator 6 external diameters are provided with.Stator coil 10 is arranged on the permanent magnet generator machine stator 6.Rotor of permanent-magnetic power generator 5 is installed in engine crankshaft 3 outputs, and rotor of permanent-magnetic power generator 5 is provided with at least two fresh air inlets 7 along the rotor axial direction.The end that fan blade 4 is installed on the rotor of permanent-magnetic power generator 5 is connected with engine crankshaft 3.The fan blade 4 that will be connected with rotor of permanent-magnetic power generator 5 is arranged between flywheel shell of engine 2 and the permanent magnet generator 11.Form a cavity between rotor of permanent-magnetic power generator 5 and the flywheel shell of engine 2.Gas flow in the cavity that forms for acceleration motor bell housing and generator is convenient to the unimpeded discharge of heat in the chamber, and the vent that flywheel shell of engine radially has on the periphery will form a cooling air channel with the ventilation hole of generator amature.
In this generating set, the engine of internal body and permanent magnet generator machine stator 6 are two main heat generating components, in the course of the work, they can produce a large amount of heats, as can not effectively cooling off, will certainly influence the operate as normal of permanent magnet generator, in of the present invention, adopt air-cooled mode that flywheel shell of engine 2 and permanent magnet generator machine stator 6 are cooled off, form a unimpeded cooling air channel at internal body.
The heat part of engine can conduct to flywheel shell of engine in addition, conduct to generator by flywheel shell of engine again, owing to be located at the cooling air that rotation produced of the cooling fan between flywheel shell of engine and generator flywheel shell of engine there is cooling effect, taken away a part of heat on the flywheel shell of engine, reduced the heat conduction of flywheel shell of engine generator.
The operation principle of the present invention and the course of work:
Rotation by engine crankshaft 3, drive rotor of permanent-magnetic power generator 5, thereby because the rotation of fan blade 4 on the rotor of permanent-magnetic power generator 5, in the cavity of 2 of rotor of permanent-magnetic power generator 5 and flywheel shell of engine, form blast, cold air enters low-pressure area in the cavity by the fresh air inlet on the rotor of permanent-magnetic power generator 57, rotation by fan blade 4, form the higher-pressure region in fan blade 4 radial outer periphery, forced air is outwards got rid of from the ventilation gap of 2 of the vent 8 of flywheel shell of engine 2 and permanent magnet generator machine stator 6 and flywheel shell of engine, take away engine and passed to the heat that flywheel shell of engine 2 and permanent magnet generator machine stator 6 self produce, reach cooling effect, the cooling air of fan blade 4 generations is also taken away a part of heat that engine 1 is passed to flywheel shell of engine 2 in addition, reduce the heat conduction of 2 pairs of generators of flywheel shell of engine, limit the rising of rotor of permanent-magnetic power generator 5 temperature, thereby guaranteed the long-time reliability service of generator.
Claims (5)
1. the cooling system of a permanent magnet generator, comprise engine (1), flywheel shell of engine (2) and permanent magnet generator (11), permanent magnet generator machine stator (6) is installed on the flywheel shell of engine (2), rotor of permanent-magnetic power generator (5) is installed on the engine crankshaft (3), an end that it is characterized in that rotor of permanent-magnetic power generator (5) installation fan blade (4) is connected with engine crankshaft (3), and the fan blade (4) that is connected with rotor of permanent-magnetic power generator (5) is arranged between flywheel shell of engine (2) and the permanent magnet generator (11).
2. the cooling system of a kind of permanent magnet generator according to claim 1 is characterized in that described flywheel shell of engine (2) periphery is provided with the vent (8) more than two or two.
3. the cooling system of a kind of permanent magnet generator according to claim 1 is characterized in that the groove that described flywheel shell of engine (2) and permanent magnet generator machine stator (6) external diameter are provided with forms at least two vents along the stator outer diameter circumferencial direction (9).
4. the cooling system of a kind of permanent magnet generator according to claim 1 is characterized in that described rotor of permanent-magnetic power generator (5) is provided with at least two fresh air inlets along the rotor axial direction (7).
5. the cooling system of a kind of permanent magnet generator according to claim 1 is characterized in that the vent that has on described flywheel shell of engine (2) periphery, forms a cooling air channel with fresh air inlet on the generator amature (5).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100237835A CN101127469A (en) | 2007-07-11 | 2007-07-11 | A cooling system for permanent magnetic generator |
| PCT/CN2008/000769 WO2009006778A1 (en) | 2007-07-11 | 2008-04-15 | A cooling system for permanent magnetic generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100237835A CN101127469A (en) | 2007-07-11 | 2007-07-11 | A cooling system for permanent magnetic generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101127469A true CN101127469A (en) | 2008-02-20 |
Family
ID=39095428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100237835A Pending CN101127469A (en) | 2007-07-11 | 2007-07-11 | A cooling system for permanent magnetic generator |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101127469A (en) |
| WO (1) | WO2009006778A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009006778A1 (en) * | 2007-07-11 | 2009-01-15 | Wuxi Kipor Power Co., Ltd | A cooling system for permanent magnetic generator |
| WO2009121226A1 (en) * | 2008-04-03 | 2009-10-08 | Tian Yu | A brushless dc motor and a radiator thereof |
| CN102684384A (en) * | 2011-03-10 | 2012-09-19 | 湖南华强电气有限公司 | Power generator of motor compressor for automobile air conditioner |
| CN103023184A (en) * | 2011-09-20 | 2013-04-03 | 德昌电机(深圳)有限公司 | High-speed airflow generating device and brushless motor thereof |
| CN109921563A (en) * | 2019-04-22 | 2019-06-21 | 弘允新能源（上海）有限公司 | A kind of flywheel close coupled type generator |
| CN110460193A (en) * | 2019-08-09 | 2019-11-15 | 泰安阳光动力电机有限公司 | A kind of generator and oil machine integral type unit |
| CN115387902A (en) * | 2021-10-15 | 2022-11-25 | 常州市沃拓机电有限公司 | Diesel generator |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI422125B (en) * | 2009-11-30 | 2014-01-01 | Kwang Yang Motor Co | The cooling structure of the alternator flywheel |
| CN111181275A (en) * | 2020-01-13 | 2020-05-19 | 南通智鼎电子科技有限公司 | Engine flywheel embedded type external rotor multi-pole permanent magnet generator |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2349376Y (en) * | 1998-04-28 | 1999-11-17 | 王吉安 | Flywheel generator rotator with wind impeller |
| JPH11341742A (en) * | 1998-05-26 | 1999-12-10 | Yanmar Diesel Engine Co Ltd | Cooling structure for flywheel type power generator |
| JP2001112225A (en) * | 1999-10-06 | 2001-04-20 | Denso Corp | Magnet power generator |
| JP3827913B2 (en) * | 2000-04-14 | 2006-09-27 | 富士重工業株式会社 | Engine generator |
| JP3866480B2 (en) * | 2000-04-14 | 2007-01-10 | 富士重工業株式会社 | Engine generator |
| CN101127469A (en) * | 2007-07-11 | 2008-02-20 | 无锡开普动力有限公司 | A cooling system for permanent magnetic generator |
| CN201063498Y (en) * | 2007-07-11 | 2008-05-21 | 无锡开普动力有限公司 | Cooling system of permanent-magnet generator |
-
2007
- 2007-07-11 CN CNA2007100237835A patent/CN101127469A/en active Pending
-
2008
- 2008-04-15 WO PCT/CN2008/000769 patent/WO2009006778A1/en active Application Filing
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009006778A1 (en) * | 2007-07-11 | 2009-01-15 | Wuxi Kipor Power Co., Ltd | A cooling system for permanent magnetic generator |
| WO2009121226A1 (en) * | 2008-04-03 | 2009-10-08 | Tian Yu | A brushless dc motor and a radiator thereof |
| US8395289B2 (en) | 2008-04-03 | 2013-03-12 | Yu Tian | Brushless DC motor and a radiator thereof |
| CN102684384A (en) * | 2011-03-10 | 2012-09-19 | 湖南华强电气有限公司 | Power generator of motor compressor for automobile air conditioner |
| CN103023184A (en) * | 2011-09-20 | 2013-04-03 | 德昌电机(深圳)有限公司 | High-speed airflow generating device and brushless motor thereof |
| CN109921563A (en) * | 2019-04-22 | 2019-06-21 | 弘允新能源（上海）有限公司 | A kind of flywheel close coupled type generator |
| CN110460193A (en) * | 2019-08-09 | 2019-11-15 | 泰安阳光动力电机有限公司 | A kind of generator and oil machine integral type unit |
| CN115387902A (en) * | 2021-10-15 | 2022-11-25 | 常州市沃拓机电有限公司 | Diesel generator |
| CN115387902B (en) * | 2021-10-15 | 2024-01-02 | 常州市沃拓机电有限公司 | Diesel generator |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009006778A1 (en) | 2009-01-15 |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |