CN201063497Y - Cooling fan structure of permanent-magnet generator - Google Patents
Cooling fan structure of permanent-magnet generator Download PDFInfo
- Publication number
- CN201063497Y CN201063497Y CNU2007200406491U CN200720040649U CN201063497Y CN 201063497 Y CN201063497 Y CN 201063497Y CN U2007200406491 U CNU2007200406491 U CN U2007200406491U CN 200720040649 U CN200720040649 U CN 200720040649U CN 201063497 Y CN201063497 Y CN 201063497Y
- Authority
- CN
- China
- Prior art keywords
- generator
- permanent magnet
- rotor
- permanent
- magnet
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Motor Or Generator Cooling System (AREA)
Abstract
The utility model relates to a permanent-magnet generator cooling fan structure, in particular to a novel high-power permanent-magnet generator cooling fan structure. The utility model is characterized in that: an impeller ring and a pressing ring are arranged on a generator rotor, the impeller ring, the pressing ring and a rotor magnet core are connected into a whole, a permanent magnet is arranged inside the rotor magnet core, a fan vane of the impeller ring and the rotor magnet core provided with the permanent magnet are arranged on the two sides of an underplate. The generator rotor magnet core and a stator loop are directly cooled by air which is suctioned from a rotor blowhole through an own exocentric impeller ring arranged on the generator, smooth air flow is kept, a permanent magnet heat exchange on the rotor from the stator heat amount is reduced, air cooling effect is good and continuous working reliability of the permanent magnet generator is ensured; because the underplate is made from low magnetic conductivity material, magnetoresistance of the rotor permanent magnet is affected, thereby improving the electricity generating power of the generator.
Description
Technical field
The utility model relates to a kind of cooling fan structure of permanent magnet generator, especially the cooling fan structure of novel high-power permanent magnet generator.
Background technology
Permanent magnet generator is when work, because the impedance of its stator coil, electric current by the time have heat and send, motor body temperature inside is higher, particularly present high-power diesel digital electricity generating group, the permanent magnet generator that it disposed, 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, unit can not the long-time continuous operation like this.Since not to generator direct cooling, the heat that stator coil produces can not be caused the also very fast rising of the temperature of rotor that permanent magnet is housed by very fast discharge.For permanent magnet generator, the first-elected temperature of the influencing 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 purpose of this utility model is to overcome above-mentioned weak point, thereby provide a kind of cooling fan structure of permanent magnet generator, rotation by rotor drives the fan blade rotation, the generation cooling air is forced the cooling to permanent magnet generator, improve the cooling effect of permanent magnet generator stator coil and permanent magnet rotor iron core greatly, guarantee the continuous firing reliability of permanent magnet generator.
Main solution of the present utility model is achieved in that
The utility model comprises generator amature, feature is that fan blade ring and trim ring are installed on generator amature, fan blade ring, trim ring and rotor core link into an integrated entity, permanent magnet is installed in rotor core, and air blade and the rotor core that permanent magnet is housed are located at the two sides of fan blade ring base plate respectively on the fan blade ring.
For gas flow in the cavity of acceleration motor bell housing and generator formation, be convenient to the unimpeded discharge of heat in the chamber, the flywheel shell of engine that generator is installed radially has vent on the periphery, with cooling air channel of ventilation hole formation of generator amature.
Described base plate is provided with the fan blade more than two or two.
Described base plate is provided with the installing hole more than two or two.
Described base plate is made by low magnetic permeability material.
The other end that the fan blade of described fan blade ring is connected with base plate adopts the plate of annular to be connected.
Compared with the prior art the utility model has the following advantages:
The utility model carries the centrifugation blade ring by what be provided with on the generator amature, carry out directly air-cooled from the ventilation hole suction cold air of rotor to generator rotor core and stator coil, keep happy air flows, reduce of the heat conduction of the heat of stator to permanent magnet on the rotor, the heat that will conduct to rotor is taken away simultaneously, have good air cooling effect, guarantee the continuous firing reliability of permanent magnet generator; Because fan blade ring base plate made by low magnetic permeability material, the permanent magnet of rotor has been played the resistance magnetic action, improved the generating efficiency of generator.
Description of drawings
Fig. 1 is the air blade structural representation that is provided with on the utility model base plate.
Fig. 2 is a rotor of permanent-magnetic power generator STRUCTURE DECOMPOSITION schematic diagram of the present utility model.
Fig. 3 is a rotor of permanent-magnetic power generator assembly schematic diagram of the present utility model.
Fig. 4 is a permanent magnet generator assembly schematic diagram of the present utility model.
Embodiment
Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:
The utility model mainly is made up of fan blade ring 1, trim ring 2, permanent magnet 3, rotor core 4, generator amature 5, generator unit stator 6, base plate 7, fan blade 8 and installing hole 9 etc.
As shown in Figure 1 and Figure 2: the utility model adopts and have ventilation hole on generator amature 5; fan blade ring 1 and trim ring 2 are installed on the generator amature 5; link into an integrated entity with rotor core 4 by the bolt leaf joint 1, trim ring 2 of keeping watch; in the protection rotor core 4 permanent magnet 3 is installed; fan blade ring 1 and the rotor core 4 that permanent magnet 3 is housed are located at the two sides of base plate 7 respectively, on the fan blade ring 7 other ends that are connected of fan blade 8 and base plate can be connected with the plate of annular.
In this generating set, the engine of internal body and generator unit stator 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 described in the utility model, adopt air-cooled mode that flywheel shell of engine and generator unit stator are cooled off, form a unimpeded cooling air channel at internal body.
The operation principle of the present utility model and the course of work:
As Fig. 3, shown in Figure 4: by the rotation of engine crankshaft, drive generator amature, thereby because the rotation of generator amature windward leaf joint, in the cavity between generator amature and flywheel shell of engine, form blast, cold air enters low-pressure area in the cavity by the ventilation hole on the generator amature, rotation by the fan blade ring, form the higher-pressure region in fan blade ring radial outer periphery, forced air is outwards got rid of from the vent of flywheel shell of engine and the ventilation gap between generator unit stator and flywheel shell of engine, take away engine and passed to the heat that flywheel shell of engine and generator unit stator self produce, reach cooling effect, limited the rising of Generator Rotor Temperature, thereby the temperature that has guaranteed generator rises.
Claims (5)
1. the cooling fan structure of a permanent magnet generator, comprise generator amature (5), it is characterized in that going up installation fan blade ring (1) and trim ring (2) at generator amature (5), fan blade ring (1), trim ring (2) link into an integrated entity with rotor core (4), in rotor core (4) permanent magnet (3) go up to be installed, the fan blade (8) of fan blade ring (1) and the rotor core (4) that permanent magnet (3) are housed are located at the two sides of base plate (7) respectively.
2. the cooling fan structure of a kind of permanent magnet generator according to claim 1 is characterized in that described base plate (7) is provided with the fan blade (8) more than two or two.
3. the cooling fan structure of a kind of permanent magnet generator according to claim 1 is characterized in that described base plate (7) is provided with the installing hole (9) more than two or two.
4. the cooling fan structure of a kind of permanent magnet generator according to claim 1 and 2 is characterized in that described base plate (7) made by low magnetic permeability material.
5. the cooling fan structure of a kind of permanent magnet generator according to claim 1 is characterized in that the other end that the fan blade (8) of described fan blade ring (1) is connected with base plate (7) adopts the plate of annular to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200406491U CN201063497Y (en) | 2007-07-11 | 2007-07-11 | Cooling fan structure of permanent-magnet generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200406491U CN201063497Y (en) | 2007-07-11 | 2007-07-11 | Cooling fan structure of permanent-magnet generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201063497Y true CN201063497Y (en) | 2008-05-21 |
Family
ID=39451884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200406491U Expired - Fee Related CN201063497Y (en) | 2007-07-11 | 2007-07-11 | Cooling fan structure of permanent-magnet generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201063497Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888147A (en) * | 2009-05-14 | 2010-11-17 | 信越化学工业株式会社 | The cooling body that is used for axial gap type rotating machine |
| CN102315709A (en) * | 2011-08-17 | 2012-01-11 | 浙江寰亚电子有限公司 | High-power energy-saving motor |
| CN103378710A (en) * | 2012-04-16 | 2013-10-30 | 杰达电能科技股份有限公司 | Permanent magnetic coupling with heat radiating blades |
| CN112865427A (en) * | 2021-01-13 | 2021-05-28 | 珠海格力电器股份有限公司 | Winding heat radiation structure, rotor and motor |
-
2007
- 2007-07-11 CN CNU2007200406491U patent/CN201063497Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888147A (en) * | 2009-05-14 | 2010-11-17 | 信越化学工业株式会社 | The cooling body that is used for axial gap type rotating machine |
| CN102315709A (en) * | 2011-08-17 | 2012-01-11 | 浙江寰亚电子有限公司 | High-power energy-saving motor |
| CN102315709B (en) * | 2011-08-17 | 2013-12-18 | 平国民 | High-power energy-saving motor |
| CN103378710A (en) * | 2012-04-16 | 2013-10-30 | 杰达电能科技股份有限公司 | Permanent magnetic coupling with heat radiating blades |
| CN112865427A (en) * | 2021-01-13 | 2021-05-28 | 珠海格力电器股份有限公司 | Winding heat radiation structure, rotor and motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101127468A (en) | A cooling fan structure for permanent magnetic generator | |
| CN101127469A (en) | A cooling system for permanent magnetic generator | |
| CN101170266A (en) | External rotor car permanent magneto | |
| CN202034855U (en) | Hybrid cooling heat radiation structure of synchronous generator permanent magnet rotor | |
| CN201063497Y (en) | Cooling fan structure of permanent-magnet generator | |
| CN101136567A (en) | Low-noise high efficiency electric motor | |
| CN102005860A (en) | Heat abstractor for high-power vertical-axis wind generating set | |
| CN201063498Y (en) | Cooling system of permanent-magnet generator | |
| CN109038949A (en) | A kind of rotor cooling structure suitable for totally-enclosed interior permanent magnet machines | |
| CN202997806U (en) | Motor | |
| CN113162281B (en) | External rotor electric machine with cooling structure | |
| CN201650433U (en) | Cooling system of two-stroke gasoline generating set | |
| CN201332325Y (en) | Energy-saving negative pressure generating device | |
| CN204376630U (en) | A kind of rotor with fan leaf | |
| CN113224879A (en) | Compressor special motor capable of never demagnetizing | |
| CN210074961U (en) | Heat dissipation base of permanent magnet generator | |
| CN202513688U (en) | Wind driven generator with vertical-axis micro-power magnetic loop and energy gathering ring | |
| CN203747552U (en) | Cooling system of inverter generator | |
| CN204349706U (en) | A kind of 6kW generator | |
| CN202172334U (en) | Heat dissipation rotor structure with dual inner fans and high-voltage three-phase asynchronous motor thereof | |
| CN202004590U (en) | Rare earth permanent magnet core-free generating set | |
| CN202183692U (en) | Automobile generator | |
| CN202187864U (en) | Megawatt grade external electric excitation direct driving wind driven generator | |
| CN206471989U (en) | A kind of stator built-in type cooling wind blade structural electromotor based on plant protection unmanned plane | |
| CN201013516Y (en) | Rotor of forced cooling ignition apparatus for motorcycle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080521 Termination date: 20160711 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |