CN106285893A - Digital frequency conversion generator cooling system - Google Patents
Digital frequency conversion generator cooling system Download PDFInfo
- Publication number
- CN106285893A CN106285893A CN201610834118.3A CN201610834118A CN106285893A CN 106285893 A CN106285893 A CN 106285893A CN 201610834118 A CN201610834118 A CN 201610834118A CN 106285893 A CN106285893 A CN 106285893A
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- Prior art keywords
- air
- cooling
- air inlets
- housing
- fan
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P1/00—Air cooling
- F01P1/02—Arrangements for cooling cylinders or cylinder heads, e.g. ducting cooling-air from its pressure source to cylinders or along cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P1/00—Air cooling
- F01P1/06—Arrangements for cooling other engine or machine parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
- F01P5/06—Guiding or ducting air to, or from, ducted fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/02—Cylinders; Cylinder heads having cooling means
- F02F1/04—Cylinders; Cylinder heads having cooling means for air cooling
- F02F1/06—Shape or arrangement of cooling fins; Finned cylinders
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P1/00—Air cooling
- F01P1/02—Arrangements for cooling cylinders or cylinder heads, e.g. ducting cooling-air from its pressure source to cylinders or along cylinders
- F01P2001/023—Cooling cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P1/00—Air cooling
- F01P1/02—Arrangements for cooling cylinders or cylinder heads, e.g. ducting cooling-air from its pressure source to cylinders or along cylinders
- F01P2001/026—Cooling cylinder heads
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
nullThe invention discloses a kind of digital frequency conversion generator cooling system，Including housing cavity lost pressure cooling module、Electric motor fan forces refrigerating module、Flywheel fan forces refrigerating module、Compressed gas orientation refrigerating module，Described housing cavity lost pressure cooling module includes No. one and No. two air inlets (1) being arranged on housing (6) both sides，It is arranged on No. three air inlets (7) that housing (6) bottom is corresponding with air filter、No. four air inlets (2) corresponding with electromotor、No. five air inlets (8) corresponding with (37) bottom cylinder block、No. six air inlets (3) corresponding with direct current stabilizer (17)、No. seven air inlets (5) that fin plate with inverter (14) is corresponding、No. eight air inlets (4) that electric capacity (16) is corresponding are highlighted with inverter，Next number that act in negative pressure sucks the cool ambient air corresponding parts of cooling or position to No. eight air inlets.After using this structure, there is the advantage such as compact conformation, rationally distributed, rate of cooling is fast, effective, length in service life.
Description
Technical field
The invention relates to a kind of digital frequency conversion generator, the internal cooling system of a kind of digital frequency conversion generator
System.
Background technology
Digital frequency conversion generator has the plurality of advantages such as low noise, volume is little, output is steady, generating efficiency is high, for this city
Various informative frequency conversion generator product it is proposed in a large number on field.But frequency conversion generator compares the many inversion controls of conventional electric generators
Device processed and other electrical part modules, if the too high meeting of the temperature of inverter directly affects the properly functioning of equipment.Small size is with high
The feature of output makes the internal heat dissipating of frequency conversion generator become the No.1 difficult problem of product development person.
The mode of air blast cooling is widely used by digital frequency conversion generator developers, but major part uses a cooling
Fan connects single air channel mode of bent axle, though so simple in construction, the most not only cooling effect is limited, and the gas produced
Stream can be the most uneven in generator air channel, easily causes the danger that generator local temperature is too high.
The most existing frequency conversion generator inner cooling system is owing to air channel structure design is undesirable and part placement does not conforms to
Reason causes cooling down in a large number " blind spot ", and does not take into full account the electric type parts needing natural wind preferentially to cool down, and surface
The cooling problem at cylinder block, cylinder cover and acoustic filter that temperature is higher does not the most really solve.Have a strong impact on complete machine
Performance and used life..To this end, many manufacturers and knowledgeable people develop for the problems referred to above and manufacture experimently, but so far
Ideal product is not yet had to emerge.
Summary of the invention
For overcoming existing frequency conversion generator inner cooling system above shortcomings, the purpose of the invention is to pass through
Unique multi-air duct structure design and the rational deployment of the internal modules of complete machine, ensureing compact conformation, do not affecting outward appearance
On the premise of a kind of efficient, digital frequency conversion generator cooling system of uniform cooling effect is provided.Another mesh of the invention
Be to consider the electric type parts that need to preferentially cool down and the highest acoustic filter, cylinder cover and the cylinder block of surface temperature especially
Cooling scheme.
The invention solves the technical scheme that above-mentioned technical problem is used, and it includes housing cavity lost pressure cooling mould
Block, electric motor fan force refrigerating module, flywheel fan to force refrigerating module, compressed gas orientation refrigerating module, described housing
Inner chamber lost pressure cooling module includes No. one and No. two air inlets being symmetricly set on housing both sides, be arranged on housing bottom and with sky
No. three air inlets that filter is corresponding, are arranged on housing bottom corresponding with electromotor No. four air inlets, are arranged on housing
Bottom No. five air inlets corresponding with bottom cylinder block, be arranged on housing bottom corresponding with direct current stabilizer No. six
Air inlet, is arranged on housing bottom corresponding No. seven air inlets of fin plate with inverter, is arranged on housing bottom also
No. eight air inlets that electric capacity is corresponding are highlighted, in next number of effect of power assembly negative pressure to No. eight air intakes with inverter
Mouth sucks cool ambient air and forms the cooling air-flow corresponding parts of cooling or position.
The further scheme of the invention, described electric motor fan forces refrigerating module to include rotor wind scooper, electricity
Machine fan, the internal up and down air channel being arranged on cylinder block side lid, rotor wind scooper is provided with air vent, and upper internal air channel is even
Plate type fins before steaming cylinder body, bottom lower internal air channel connection cylinder block, on rotor wind scooper, air vent is at electric motor fan
Effect is lower to be sucked cooling air cooling rotor and produces electric motor fan malleation air-flow, and electric motor fan malleation air-flow is from the most internal wind
Road is discharged and is forced before cooling cylinder block bottom plate type fins and cylinder block.
The further scheme of the invention, described flywheel fan forces refrigerating module to include trigger, flywheel wind-guiding
Wind scooper before and after cover, flywheel fan, cylinder cover wind scooper, acoustic filter, the air vent in trigger is inhaled under flywheel fan effect
Enter to cool down wind and produce flywheel fan malleation air-flow, flywheel fan positive pressure gas stream by air shield of flywheel, cylinder cover wind scooper with
And wind scooper cools down cylinder deck plate shape scale, cylinder cover surrounding plate shape fin, spark plug, aerofluxus successively before and after acoustic filter
Pipe, acoustic filter.
The further scheme of the invention, described compressed gas orientation refrigerating module includes being arranged on cylinder block end face
On air-guiding hole, air-guiding hole is the most right with the high voltage package on cylinder block, flywheel fan produce part malleation air-flow cooling high voltage package
With plate type fins before cylinder block.
The further scheme of the invention, the plate fin of described inverter is provided with inverter wind scooper, No. seven
The cooling wind that air inlet sucks is concentrated through the inverter sufficiently cool inversion of plate fin under the guiding of inverter wind scooper
Device heating position.
The further scheme of the invention, the cavity between described power assembly and housing is at motor wind
The lower inside wind that formed of common effect of fan, flywheel fan and compressed gas orientation refrigerating module generation flow perturbation, internal wind
Non-principal heat-generating component inside cooling carburetor assembly, fuel tank, oil pipe, wire harness, control panel.
The further scheme of the invention, the malleation air-flow of described electric motor fan generation, the generation malleation of flywheel fan
The generation malleation air-flow of air-flow, compressed gas orientation refrigerating module and negative pressure suck the cooling air-flow remittance that cool ambient air is formed
Gather cylinder cover cool down acoustic filter again and discharged from honeycomb air vent by air vent wind scooper.
The further scheme of the invention, described acoustic filter front shroud, acoustic filter back cover and air vent wind scooper interior
Side is provided with the heat radiation reflection paster preventing thermal radiation temperature from raising and to damage.
The further scheme of the invention, the bottom of described housing is provided with some equally distributed little fresh air inlets.
After using said structure, compared with prior art have the following advantages and effect: one is generator cooling structure
Compact, rationally distributed, nothing cooling " blind spot ", and taken into full account the electric type parts needing natural wind preferentially to cool down, whole
The air-flow in the most all air channels of cooling system converges at the highest cylinder cover of surface temperature and acoustic filter, makes cylinder cover and disappears
The cooling of sound device is fully.
Two is to arrange the most internal air channel at cylinder block side cover, not only increases the cooling effect to cylinder block side cover.And
And strengthened plate type fins before cylinder block and the cooling bottom cylinder block by the internal up and down air channel of cylinder block side cover, fly
The part positive pressure gas stream that wheel fan produces is by tabular fin before the air-guiding hole cooling high voltage package on cylinder block end face and cylinder block
Sheet, finally enhances the cooling effect of whole cylinder block.
Three is that inverter wind scooper makes the air-flow forced of No. seven air inlets of housing bottom and No. eight air inlets through inversion control
The main heat release position of device processed, quickly takes away the heat that inverter produces.Avoid cooling wind having without inverter controller
The cooling that effect heating position is just directly entered follow-up air channel and causes is bad, it is ensured that the reliability of inverter controller, extends whole
The service life of machine.
Four is the bottom that main air inlet is arranged on housing, has patch ground air themperature relatively low bottom electromotor,
It is attractive in appearance that air inlet secret does not affect complete machine, it is not easy to being blocked by periphery object, air inlet is more stable, reduce the most to greatest extent into
The air themperature in air port, also greatly reduces the axial dimension of complete machine, makes structure compacter.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of the invention.
Fig. 2 be the invention look up structural representation.
Fig. 3 is the left view structural representation of the invention.
Fig. 4 is the cooling structure schematic diagram of the invention inverter.
Fig. 5 is the structural representation of the invention power assembly.
Fig. 6 is the exploded structural representation of the invention power assembly flywheel side.
Fig. 7 is the exploded structural representation of the invention power assembly motor side.
Wherein 1 No. one and No. two air inlets, 2 No. four air inlets, 3 No. six air inlets, 4 No. eight air inlets, 5 No. seven air intakes
Mouthful, 6 housings, 7 No. three air inlets, 8 No. five air inlets, 10 air vent wind scoopers, 11 exhaustors, 12 honeycomb air vents, 13 inversions
Device wind scooper, the 14 plate fins of inverter, 15 inverters, 16 inverters highlight electric capacity, 17 direct current stabilizers, 18 start motor-driven
Power assembly, 19 acoustic filter Windshields, wind scooper after 20 acoustic filters, 21 cylinder cover wind scoopers, 22 carburetor assemblies, 23 flywheels are led
Fan housing, 24 spark plugs, 25 high voltage package, 26 air-guiding holes, 27 cylinder block end faces, 28 flywheel fans, 29 triggers, 30 rotor wind-guidings
Cover, 31 stators, 32 rotors, on 33 internal air channel, 34 electric motor fans, 35 times internal air channels, plate type fins before 36 cylinder blocks, and 37
Bottom cylinder block, 38 fuel tanks, inside 39 control panels, 40 acoustic filters, 41 cylinder cover surrounding plate shape fins, 42 cylinder deck plates
Shape scale, 43 air vents, 44 cylinder block side covers, 45 cylinder blocks.
Detailed description of the invention
Shown in Fig. 1 to Fig. 7, for the specific embodiments of the invention a kind of digital frequency conversion generator cooling system, it
Refrigerating module, flywheel fan is forced to force refrigerating module, compressed gas fixed including housing cavity lost pressure cooling module, electric motor fan
To refrigerating module.Described housing cavity lost pressure cooling module includes No. one and No. two air intakes being symmetricly set on housing 6 both sides
Mouth 1, as shown in Figure 1.It is arranged on bottom housing 6 and No. three air inlets 7 corresponding with air filter, is used for supporting that internal combustion engine fires
Burn, be arranged on bottom housing 6 and No. four air inlets 2 corresponding with electromotor, be arranged on bottom housing 6 and with cylinder block bottom
37 No. five corresponding air inlets 8, are arranged on bottom housing 6 and No. six air inlets 3 corresponding with direct current stabilizer 17, arrange
Bottom housing 6 and corresponding No. seven air inlets 5 of fin plate with inverter 14, it is arranged on bottom housing 6 and and inversion
Device highlights electric capacity 16 and corresponding No. eight air inlets 4 of appliance component, under the effect of power assembly 18 negative pressure
No. one to No. eight air inlet sucks cool ambient air and forms the cooling air-flow corresponding parts of cooling or position.Described housing 6
Bottom be provided with some equally distributed little fresh air inlets, little air intake hole pattern does not shows, is used for improving power assembly 18
And the uniformity of the cavity inside wind between housing, as shown in Figure 2.
As it is shown in fig. 7, described electric motor fan forces refrigerating module to include rotor wind scooper 30, electric motor fan 34, set
Putting the internal up and down air channel 33,35 on cylinder block side cover 44, rotor wind scooper 30 is provided with air vent 43, upper internal air channel
Plate type fins 36 before 33 connection cylinder blocks, lower internal air channel 35 connects bottom cylinder block 37, rotor wind scooper 30 ventilates
Hole 43 sucks cooling air cooling rotor 31,32 under electric motor fan 34 acts on and produces electric motor fan malleation air-flow, motor wind
Fan malleation air-flow is discharged from up and down internal air channel 33,35 and is forced before cooling cylinder block bottom plate type fins 36 and cylinder block 37,
It is possible not only to cool down rotor 31,32 and cylinder block side cover 44 and plate type fins 36 and cylinder block before cylinder block can be cooled down
Bottom 37.
As shown in Figure 6, described flywheel fan forces refrigerating module to include trigger 29, air shield of flywheel 23, flywheel wind
Wind scooper 19,20 before and after fan 28, cylinder cover wind scooper 21, acoustic filter, the air vent in trigger 29 acts at flywheel fan 28
Lower suction cools down wind and produces flywheel fan malleation air-flow, and flywheel fan positive pressure gas stream is led by air shield of flywheel 23, cylinder cover
Before and after fan housing 21 and acoustic filter, wind scooper 19,20 cools down cylinder deck plate shape scale 42, cylinder cover surrounding plate shape fin successively
Sheet 41, spark plug 24, exhaustor 11, acoustic filter 40.Described compressed gas orientation refrigerating module includes being arranged on cylinder block end
Air-guiding hole 26 on face 27, air-guiding hole 26 is the most right with the high voltage package 25 on cylinder block 45, the part malleation that flywheel fan 28 produces
Plate type fins 36 before air-flow cooling high voltage package 25 and cylinder block, makes high voltage package 25 sufficiently cool.
As shown in Figure 4 and Figure 5, the plate fin of described inverter 14 is provided with inverter wind scooper 13, No. seven air intakes
The cooling wind that mouth 5 sucks are concentrated through the sufficiently cool inversion of the plate fin of inverter 14 under the guiding of inverter wind scooper 13
Device 15 heating position.Cavity between described power assembly 18 and housing 6 electric motor fan 34, flywheel fan 28 with
And form inside wind, internally air-cooled but carburetor assembly under the common effect of compressed gas orientation refrigerating module generation flow perturbation
22, the non-principal heat-generating component such as 39 inside fuel tank 38, oil pipe, wire harness, control panel, internal wind finally enters with negative pressure and starts
Inside each wind scooper of mechanomotive force assembly 18.
As shown in Fig. 3, Fig. 6 and Fig. 7, the malleation air-flow of described electric motor fan 34 generation, the generation malleation of flywheel fan 28
The generation malleation air-flow of air-flow, compressed gas orientation refrigerating module and negative pressure suck the cooling air-flow remittance that cool ambient air is formed
Gather the highest cylinder cover of surface temperature cool down acoustic filter 40 again and discharged from honeycomb air vent 12 by air vent wind scooper 10.
The inner side of described acoustic filter front shroud 19, acoustic filter back cover 20 and air vent wind scooper 10 is provided with and prevents thermal radiation temperature from raising
And the heat radiation reflection paster damaged.
The above, a simply embodiment of the invention, not the invention is made any pro forma
Limit, on the basis of without departing from the technical scheme of the invention, done simple modification, equivalent variations or modification, all fall
Enter the protection domain of the invention.
Claims (9)
1. a digital frequency conversion generator cooling system, forces cooling mould including housing cavity lost pressure cooling module, electric motor fan
Block, flywheel fan force refrigerating module, compressed gas orientation refrigerating module, it is characterized in that: described housing cavity lost pressure cooling
Module includes No. one and No. two air inlets (1) being symmetricly set on housing (6) both sides, is arranged on housing (6) bottom and air filter
No. three air inlets (7) that device is corresponding, are arranged on housing (6) bottom No. four air inlets (2) corresponding with electromotor, arrange
Housing (6) bottom No. five air inlets (8) corresponding with (37) bottom cylinder block, be arranged on housing (6) bottom and with directly
No. six air inlets (3) that stream manostat (17) is corresponding, are arranged on housing (6) bottom fin plate with inverter (14) phase
No. seven corresponding air inlets (5), are arranged on housing (6) bottom and highlight No. eight air inlets that electric capacity (16) is corresponding with inverter
(4), next number of effect in power assembly (18) negative pressure sucks cool ambient air to No. eight air inlets and forms cooling
Air-flow cools down corresponding parts or position.
Digital frequency conversion generator cooling system the most according to claim 1, is characterized in that: described electric motor fan is forced cold
But module includes rotor wind scooper (30), electric motor fan (34), the internal up and down air channel that is arranged on cylinder block side cover (44)
(33,35), rotor wind scooper (30) is provided with air vent (43), plate type fins before upper internal air channel (33) connection cylinder block
(36), bottom lower internal air channel (35) connection cylinder block (37), the upper air vent (43) of rotor wind scooper (30) is at electric motor fan
(34) effect is lower sucks cooling air cooling rotor (31,32) and produces electric motor fan malleation air-flow, electric motor fan malleation air-flow
Discharge from up and down internal air channel (33,35) and force before cooling cylinder block bottom plate type fins (36) and cylinder block (37).
Digital frequency conversion generator cooling system the most according to claim 1 and 2, is characterized in that: described flywheel fan is strong
Refrigerating module processed includes trigger (29), air shield of flywheel (23), flywheel fan (28), cylinder cover wind scooper (21), acoustic filter
Wind scooper (19,20) front and back, the air vent in trigger (29) sucks cooling wind under flywheel fan (28) acts on and generation flies
Wheel fan malleation air-flow, flywheel fan positive pressure gas stream is by air shield of flywheel (23), cylinder cover wind scooper (21) and acoustic filter
Front and back wind scooper (19,20) cools down cylinder deck plate shape scale (42), cylinder cover surrounding plate shape fin (41), spark plug successively
(24), exhaustor (11), acoustic filter (40).
Digital frequency conversion generator cooling system the most according to claim 3, is characterized in that: described compressed gas orientation is cold
But module includes the air-guiding hole (26) being arranged on cylinder block end face (27), air-guiding hole (26) and the high voltage package on cylinder block (45)
(25) the most right, the part malleation air-flow that flywheel fan (28) produces cools down plate type fins before high voltage package (25) and cylinder block
(36)。
Digital frequency conversion generator cooling system the most according to claim 4, is characterized in that: the plate fin of described inverter
Sheet (14) is provided with inverter wind scooper (13), cooling wind the leading in inverter wind scooper (13) that No. seven air inlets (5) suck
It is concentrated through downwards inverter plate fin (14) sufficiently cool inverter (15) heating position.
Digital frequency conversion generator cooling system the most according to claim 5, is characterized in that: described power assembly
(18) cavity and between housing (6) produces at electric motor fan (34), flywheel fan (28) and compressed gas orientation refrigerating module
The common effect of angry flow disturbance is lower forms internal wind, internally air-cooled but non-principal heat-generating component.
Digital frequency conversion generator cooling system the most according to claim 6, is characterized in that: described electric motor fan (34) produces
Malleation air-flow, the generation malleation air-flow of flywheel fan (28), compressed gas orientation refrigerating module generation malleation air-flow and
The cooling air-flow that negative pressure suction cool ambient air is formed converges to cylinder cover and cools down acoustic filter (40) again and by air vent wind-guiding
Cover (10) is discharged from honeycomb air vent (12).
Digital frequency conversion generator cooling system the most according to claim 7, is characterized in that: described acoustic filter front shroud (19),
The inner side of acoustic filter back cover (20) and air vent wind scooper (10) is provided with the hot spoke preventing thermal radiation temperature from raising and to damage
Penetrate reflection paster.
Digital frequency conversion generator cooling system the most according to claim 8, is characterized in that: the bottom of described housing (6) sets
There are some equally distributed little fresh air inlets.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610834118.3A CN106285893B (en) | 2016-09-20 | 2016-09-20 | Digital frequency conversion generator cooling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610834118.3A CN106285893B (en) | 2016-09-20 | 2016-09-20 | Digital frequency conversion generator cooling system |
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| CN106285893A true CN106285893A (en) | 2017-01-04 |
| CN106285893B CN106285893B (en) | 2018-08-10 |
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| CN201610834118.3A Active CN106285893B (en) | 2016-09-20 | 2016-09-20 | Digital frequency conversion generator cooling system |
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| CN110557959A (en) * | 2018-03-30 | 2019-12-10 | 本田技研工业株式会社 | universal engine |
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| CN112943436B (en) * | 2019-04-12 | 2022-07-01 | 重庆鑫源农机股份有限公司 | Air duct type cooling frequency conversion unit and layout method thereof |
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