CN201690314U - Digital variable-frequency electric generator with combined cooling air flue - Google Patents
Digital variable-frequency electric generator with combined cooling air flue Download PDFInfo
- Publication number
- CN201690314U CN201690314U CN2010201912539U CN201020191253U CN201690314U CN 201690314 U CN201690314 U CN 201690314U CN 2010201912539 U CN2010201912539 U CN 2010201912539U CN 201020191253 U CN201020191253 U CN 201020191253U CN 201690314 U CN201690314 U CN 201690314U
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- generator
- air
- centrifugal fan
- cooling air
- muffler
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Abstract
A digital variable-frequency electric generator with a combined cooling air flue is provided with an outer casing. An engine, a generator, a frequency changer and a silencer are arranged inside the outer casing, external air sucked from an air inlet on the outer casing by the aid of driving a centrifugal fan sequentially cools down the frequency changer, a crankshaft case, a generator stator, a cylinder head and the silencer, and a first cooling air flue is formed by air exhausted from an air outlet. External air sucked from an air inlet on the outer casing by the aid of driving the centrifugal fan sequentially cools down the frequency changer, the crankshaft case, the generator rotor, the cylinder head and the silencer, and a second cooling air flue is formed by air exhausted from the air outlet. The digital variable-frequency electric generator forms a combined cooling air flue in the manner of 'combined-separated-combined' by respectively cooling down the generator stator and the generator rotor by air inlet from the front direction and the rear direction of the centrifugal fan, greatly prolongs the service life of the generator and improves conversion efficiency of the generator.
Description
Technical field
The utility model relates to digital frequency conversion generator, relates generally to the inner cooling air channel of portable digital frequency conversion generator of the two-cycle engine driving of compact conformation.
Technical background
In recent years, digital frequency conversion generator has obtained using widely in electrical generator fields with the advantage that its volume is little, in light weight, efficient is high.And frequency converter, engine and generator produce a large amount of heats in the course of the work, but be subjected to the topology layout of digital frequency conversion generator and the restriction of the inner space of compactness, can not in time distribute and discharge as heat, the operational environment deterioration will cause engine and generator life-span to shorten greatly, and the electronic component in the frequency converter also can't operate as normal.
How to be a problem considering more rationally with fast the heat of engine and generator work generation being got rid of.The patent No. is: 200620078109.8, patent name is the generating set with two air channels, this patent disclosure a kind of generator, adopt the composite type cooling air channel, wherein an air channel is that centrifugal fan cools off inverter, generating body, cylinder head and muffler respectively, and another air channel is that aerofoil fan cools off crankcase.This scheme arrangement cooling effect is better, but its complex structure, engine shaft upwards needs two fans are installed, and the cooling blast direction is the single horizontal or direction of circling round.Two independent fully required duct spaces in air channel are bigger, and cause because of airflow direction, cooling blast can't pass from the generating body stator coil takes away the heat that coil produces, and causes the generating body temperature rise higher, comparatively can cause the generating body stator coil to burn under the bad working environment.
The utility model content
The purpose of this utility model is to overcome existing digital frequency conversion generator cooling effectiveness and structural weak point, a kind of cooling air channel that allows cooling blast flow in order is provided, and then make frequency converter, engine crankcase, generator unit stator, generator amature, engine cylinder head and muffler obtain better radiating condition and operational environment, prolong engine, generator and frequency converter physical life greatly.
Main solution of the present utility model is achieved in that
Have the digital frequency conversion generator of composite type cooling air channel, include shell, be provided with engine, generator, frequency converter, muffler in the enclosure, described generator comprises generator unit stator and generator amature, and generator is installed in the right-hand member of engine; Be fixed with centrifugal fan on the generator, the generator cylindrical is provided with the generator wind scooper and is fixed on the crankcase; Generator wind scooper top is provided with cylinder head blower cover and spark plug guard shield, and is fixed on the cylinder head; Frequency converter is fixed on the left end of engine; The rear side of engine is fixed with muffler, and the periphery of muffler is provided with the muffler wind scooper; The corresponding shell of described frequency converter and muffler is provided with air inlet and air outlet; By driving centrifugal fan, the air inlet from shell sucks outside air, successively frequency converter, crankcase, generator unit stator, cylinder head, muffler is cooled off, and forms first cooling air channel from the air outlet exhaust; By driving centrifugal fan, the air inlet from shell sucks outside air, successively frequency converter, crankcase, generator amature, cylinder head, muffler is cooled off, and forms second cooling air channel from the air outlet exhaust.
Described centrifugal fan drives first cooling air channel that forms, and air-flow is behind the process crankcase, successively by the axial flow on the stator coil air inlet on the crankcase, stator coil gap and the centrifugal fan
Air inlet enters centrifugal fan again; Described centrifugal fan drives second cooling air channel that forms, and air-flow directly by the wind scooper air inlet before the generator wind scooper, enters the centrifugal fan cooling of generator rotor through behind the crankcase.
Described first cooling air channel and second cooling air channel suck outside air from the air inlet on the shell, behind cooling frequency converter and crankcase, by default structural change airflow direction and air quantity size, air-flow cools off the back junction to the generator unit stator of generator and the generator amature of generator respectively, countercylinder head and muffler cool off successively under centrifugal fan drives, and discharge from air outlet.Former and later two direction air intakes at centrifugal fan cool off generator unit stator and generator amature respectively, form the composite type cooling air channel of " close-minute-close " form, have improved the working life and the conversion efficiency of generator greatly.
Description of drawings
Fig. 1 is an external structure schematic diagram of the present utility model;
Fig. 2 is an internal structure schematic diagram of the present utility model;
Fig. 3 is an air-flow cooling air duct construction schematic diagram of the present utility model;
Fig. 4 is a centrifugal fan structural representation of the present utility model.
1 shell, 2 engines, 2.1 crankcases, 2.2 cylinder head blower covers, 2.3 spark plug guard shields, 2.4 cylinder heads, 3 generators, 3.1 generator unit stators, 3.2 generator amatures, 3.3 centrifugal fans, 3.4 generator wind scoopers, 4 frequency converters, 5 mufflers, 5.1 muffler wind scooper 1-1 air inlet 1-2 air outlet 2-1 stator coil air inlet 3-1 stator coil gaps among the figure
3-2 axial flow air inlet 11 first cooling air channels 12 second cooling air channels.
Embodiment
As shown in Figure 1 and Figure 2, a kind of digital frequency conversion generator composite type cooling air channel has shell 1, is provided with engine 2, generator 3, frequency converter 4, muffler 5 in shell 1.Described generator 3 comprises generator unit stator 3.1 and generator amature 3.2, and generator 3 is installed in the right-hand member of engine 2; Be fixed with centrifugal fan 3.3 on the generator 3, generator 3 cylindricals are provided with generator wind scooper 3.4 and are fixed on the crankcase 2.1; Generator wind scooper 3.4 tops are provided with cylinder head blower cover 2.2 and spark plug guard shield 2.3, and are fixed on the cylinder head 2.4; Frequency converter 4 is fixed on the left end of engine 2; The rear side of engine 2 is fixed with muffler 5, and the periphery of muffler 5 is provided with muffler wind scooper 5.1.Described frequency converter 4 and muffler 5 corresponding shells are provided with air inlet 1-1 and air outlet 1-2.
As shown in Figure 4, centrifugal fan 3.3 is provided with axial flow air inlet 3-2.
Behind internal combustion engine start, by driving centrifugal fan 3.3, along first cooling air channel 11 shown in Fig. 3 arrow: the air inlet 1-1 from shell 1 sucks extraneous cooling air, cooling air flows and at first takes away the heat of frequency converter 4 and crankcase 2.1 work generations, cooling blast is more successively by the stator coil air inlet 2-1 on the crankcase 2.1, axial flow air inlet 3-2 on stator coil gap 3-1 and the centrifugal fan, take away generator unit stator 3.1 heats and enter centrifugal fan 3.3, last countercylinder head 2.4 under the effect of centrifugal flow, muffler 5 cools off, and 1-2 discharges hot gas from air outlet.
Behind internal combustion engine start, by driving centrifugal fan 3.3, along second cooling air channel 12 shown in Fig. 3 arrow: the air inlet 1-1 from shell 1 sucks extraneous cooling air, cooling air flows and at first takes away the heat of frequency converter 4 and crankcase 2.1 work generations, cooling blast directly enters centrifugal fan 3.3 from wind scooper 3.4 air inlets, at last generator amature 3.2, cylinder head 2.4, muffler 5 are cooled off under the effect of centrifugal flow, 1-2 discharges hot gas from air outlet.
Claims (3)
1. the digital frequency conversion generator that has the composite type cooling air channel, include shell (1), in shell (1), be provided with engine (2), generator (3), frequency converter (4), muffler (5), it is characterized in that: described generator (3) comprises generator unit stator (3.1) and generator amature (3.2), and generator (3) is installed in the right-hand member of engine (2); Be fixed with centrifugal fan (3.3) on the generator (3), generator (3) cylindrical is provided with generator wind scooper (3.4) and is fixed on the crankcase (2.1); Generator wind scooper (3.4) top is provided with cylinder head blower cover (2.2) and spark plug guard shield (2.3), and is fixed on the cylinder head (2.4); Frequency converter (4) is fixed on the left end of engine (2); The rear side of engine (2) is fixed with muffler (5), and the periphery of muffler (5) is provided with muffler wind scooper (5.1), and described frequency converter (4) and the corresponding shell of muffler (5) (1) are provided with air inlet (1-1) and air outlet (1-2);
By driving centrifugal fan (3.3), air inlet (1-1) from shell (1) sucks outside air, successively frequency converter (4), crankcase (2.1), generator unit stator (3.1), cylinder head (2.4), muffler (5) are cooled off, from air outlet (1-2) exhaust formation first cooling air channel (11);
By driving centrifugal fan (3.3), air inlet (1-1) from shell (1) sucks outside air, successively frequency converter (4), crankcase (2.1), generator amature (3.2), cylinder head (2.4), muffler (5) are cooled off, from air outlet (1-2) exhaust formation second cooling air channel (12).
2. the digital frequency conversion generator with composite type cooling air channel according to claim 1, it is characterized in that: described centrifugal fan (3.3) drives first cooling air channel (11) that forms, air-flow is behind process crankcase (2.1), by the axial flow air inlet (3-2) on stator coil air inlet (2-1), stator coil gap (3-1) and the centrifugal fan (3.3) on the crankcase (2.1), enter centrifugal fan (3.3) more successively; Described centrifugal fan (3.3) drives second cooling air channel (11) that forms, air-flow is behind process crankcase (2.1), directly, enter centrifugal fan (3.3) cooling of generator rotor (3.2) by the preceding wind scooper air inlet (3-3) of generator wind scooper (3.4).
3. the digital frequency conversion generator with composite type cooling air channel according to claim 2, it is characterized in that: described first cooling air channel (11) and second cooling air channel (12) suck outside air from the air inlet (1-1) on the shell (1), behind cooling frequency converter (4) and crankcase (2.1), by default structural change airflow direction and air quantity size, air-flow cools off the back junction to the generator unit stator (3.1) of generator (3) and the generator amature (3.2) of generator (3) respectively, countercylinder head (2.4) and muffler (5) cool off successively under centrifugal fan (3.3) drives, and discharge from air outlet (1-2); Former and later two direction air intakes at centrifugal fan (3.3) cool off generator unit stator and generator amature respectively, form the composite type cooling air channel of " close-minute-close " form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201912539U CN201690314U (en) | 2010-05-17 | 2010-05-17 | Digital variable-frequency electric generator with combined cooling air flue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201912539U CN201690314U (en) | 2010-05-17 | 2010-05-17 | Digital variable-frequency electric generator with combined cooling air flue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201690314U true CN201690314U (en) | 2010-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201912539U Expired - Fee Related CN201690314U (en) | 2010-05-17 | 2010-05-17 | Digital variable-frequency electric generator with combined cooling air flue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201690314U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104917329A (en) * | 2014-03-11 | 2015-09-16 | 上海狮虎能源科技股份有限公司 | Cooling system of variable frequency generator |
-
2010
- 2010-05-17 CN CN2010201912539U patent/CN201690314U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104917329A (en) * | 2014-03-11 | 2015-09-16 | 上海狮虎能源科技股份有限公司 | Cooling system of variable frequency generator |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101229 Termination date: 20170517 |