» Altern. energy » Windmills »Mini-wind turbine with generator, installation outside the window. Of the available materials without turning

Mini windmill with generator, installation outside the window. Of the available materials without turning




Probably the smallest operating windmill in the world with a generator. But can we put mini-impellers for the necessary generation behind the windows? Some of the readers probably thought:



Well, no, keep reading further. This model I specifically designed for a city that is not urban, but not a cat, but a windmill, you can not only mount it on a high-rise building, of course.

His advantage - compact, therefore "mini", the diameter of the propeller is 320 mm. Surely someone will immediately think that there is not enough power, but this is not so, the power is taken into account if you find a cool generator with zero coil resistance. Most likely you will have to rewind the winding under the desired voltage, everything is experimentally installed, or with the calculation. I thought, instead of a copper wire, I wound a silver one, if you didn’t twist, but at the same time you can get 20% more power. I went to the radio store, I say I need a silver varnished wire, at first the sellers were surprised, then they sent me to the jewelry store, and in the jewelry store they are all thick and mostly not varnished, but I didn’t find it in the bathhouse, it's a pity. Does anyone know any silver lacquered wires?

As a generator, a Soviet 220-volt AC motor with a gearbox was used here.




The reverse clutch is removed from it. The winding can be rewound if necessary.





The reducer itself in this case, the multiplier, should be with a not very large gear ratio, otherwise the wind will refuse to rotate such a screw, but the fact that it must stand is for sure. There are many reasons, one of them is that small-pole motors are more common, and they do not give large power at startup, that is, you need to quickly rotate the rotor. At the same time, multipoles, as a rule, have large dimensions and a large start moment, which is also not suitable in the construction of windmills. The gearbox must be checked for damage and damage, it can be cleaned and greased well with grease graphite, this procedure not only increases the starting moment, but also suppresses the noise of gears.

The windmill starts at a wind speed of 2 m / s, measured with a special instrument - an anemometer. An anemometer is a device that determines the speed of air or non-air masses, it can also record the maximum and average values ​​in its memory, if it is and is not clogged with foolishness.Installation at this starting speed immediately gives out a current, which, after accumulating in a personal Pavar in the Bank (not included homemade) can be used to charge smartphones of the proletariat. Well, yes, with increasing wind speed, the generating power increases, since an alternator is operated here, you need to build diode bridges and all that, otherwise the drive will not have time to grunt from the turbo-boosting wind. We also need to show how to add a special drive, I feel that I do not squeeze into one topic, so most likely this will be the next homemade product, of course, if you subscribe to my channel)). After all, without an electric circuit there is less joy here, but without an electric circuit it is also a beautiful centrifuge for the May bugs and a bunny thrower. In this article I will show more the mechanical part of the project, right?

The propeller is made from CD or DVD discs mounted on M2 screws, preferably from stainless steel. The method of mounting discs can be even more gentle without drilling a disc, with such mounting even the discs themselves are not damaged, they can be easily removed, replaced or reused as a storage medium. Who guessed how to fix the disk without damage, write a check out idea.

For the manufacture of the brainchild, the following components are needed:

Tools and devices:

-hacksaw;
-file;
Drill and drill;
soldering iron;
- brush;
-multimeter;
-key for nuts;
-screwdriver;
M3 tap;
-nippers.

Consumables:

-screws, washers and nuts M2, M3, M5 (stainless steel possible), different lengths;
- M3 screws without a hat 4 pcs.;
-plank 15 * 30 * 140mm;
solder, rosin;
-CD- or DVD-ROM drive 2 pcs.;
-profile corner from dural 2 * 20 * 20 * 180mm;
- duralumin plate 3 * 60 * 120mm;
-tube copper D = 6 / 2.5 * 20mm;
- 220 V AC motor with a permanent magnet on the rotor, Soviet with a gearbox of about 1:20;
- rubber plate 2 * 60 * 120mm;
- the wire for winding coils varnished, the cross section is selected under voltage;
- wires with ordinary insulation;
varnish or paint.

We begin the manufacture of a mini-windmill with a propeller, this is the most critical element of the installation.

Episode 1. The history of wind turbines of the Sumerians (just kidding). We take a stub of a strap with a size of 15 * 30 * 140mm, set the center along the diagonals, drill a centering hole with a diameter of 1 mm. We make diagonal cuts "crosswise" at the ends of the plank 40 mm deep. Another production option, but not a direct, but a rounded groove at the bottom of the cut (to fix the disk) with a grinder.







Stage 2. Stripping and grinding the strip, giving it the shape of a propeller, while controlling the center of gravity of the element within the center hole.




Stage 3. The base of the screw, if desired, can be coated with waterproof varnish or paint. We drill holes in the bar for mounting with CD screws, then we insert the disk and getting into the holes with a drill, we drill and wheels, after which we fasten them with screws.






Stage 4. We fasten the M3 screw with washers as the axis of the propeller, tightening it with a nut.




Stage 5. To connect the propeller to the generator shaft, we make a connecting sleeve from a copper tube. Inside the coupling, M3 thread (half the length of the tube). To prevent rotation of the M3 screw in the clutch from the outside, I put a lock nut and tighten it to the clutch with a key. The second half of the hole inside the copper tube without thread corresponds to the diameter of the generator shaft. So that the shaft does not protrude, I fix it with 2 or 4 M3 screws without caps. After pre-drilling 4 holes and cutting the M3 thread perpendicular to the axis of the tube.





Stage 6. I make a stand for the generator from a dural angle 2 * 20 * 20mm long for the diameter of the propeller plus a margin of 30mm, that is, only about 180mm. To do this, cut the corner at one end and bend the ends perpendicular to the corner itself.



Stage 7. Meanwhile, from a duralumin plate, I cut out 2 circles, one for the diameter of the generator. You can connect the circles with the corner with screws, but I welded. Another circle for attaching to the wall of the house there are holes for screws.













Stage 8. I am preparing the generator by pulling the overrunning clutch from it, since the wind turbine must rotate both behind and counterclockwise. Before installation, the generator gearbox must be greased with grease.Between the dural circle and the generator, I install a rubber gasket and tighten everything together with M3 screws and nuts.














Stage 9. I attach the propeller to the generator shaft and can be installed outside the window. The installation still needs an electrical circuit about it, I will tell in the next, part number 2. But even without a circuit, it is seen how the LED from the alternating current is lit while the propeller rotates in the wind.




In the video you can see the rotation of my wind turbine at a wind speed of 2-3 m / s. Near the corner, I temporarily installed a 1 W LED, not very clearly due to the bright sun, but you can see flashes of light from AC

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59 comments
OK, thanks.
Author
Babay_Mazay I didn’t drill the shaft, because it is hardened, I’m afraid to break the drill, especially of a small diameter, I just tightened their sharp tips strongly and they, too, hardened (grade 10.9) push small holes on the shaft, and put a sealant on the thread, that did not unscrew
OK, thanks. In principle, you can change often enough, now there is a lot of this good - a morally obsolete storage medium, like a compact cassette at one time. Usefully.
Author
Babay_Mazay Well, how can I tell you, the disk gets dark from UV, if you take it and try to break it and compare it with one that was not on the street, it gets a little more fragile, but so that it’s strewed like a plastic bottle on the street, then no, it’s more like a sharp temperature drop will be. The foil has fallen a little since time. It looks beautiful at night when it rotates and illuminate it with an LED. Copper turns green over time and is somewhere beautiful. I thought, what if, especially on the decorative design, in places, iron, copper, aluminum are oxidized, an interesting red-green-gray pattern turns out
Stainless steel will certainly solve the problem. Galvanic protection is yes, an interesting area of ​​life, for large structures it is very tempting. About the blades - I agree. As a simple and cheap protection against strong gusts of wind. Do not crack from UV and frost?
Author
Babay_Mazay Yes, in areas of contact of dissimilar metals due to moisture there is a risk of corrosion, but sometimes this property is specially used for the benefit, for example, zinc mass with grounding is galvanically attached to steel pipelines, so iron does not rust, and zinc is actively oxidized, a similar technology is in marine vessels so that the bottom does not rust, I also thought of putting this on all steel parts, but it’s more profitable to grind the parts yourself, although it also blackens a little, well, the hardness is less than that of hardened steel. A copper tube was chosen to simplify manufacture, and its hardness was lower, although a gust of wind withstood 9 m / s. Then he machined the clutch from a thick-walled stainless steel; no winds above 9 m / s are already terrible)).

At the expense of the blades, yes, they are weak, but there are also advantages: they are affordable (cheap), spring (they bend, damping from gusts of wind), when they crash, the first ones break then easily change, while the load on the shaft and gearbox is less destructive, do not rust, Well, beautifully shimmer in the sun in different colors))
Yes, the installation (by design) screws are often used as retaining (by functional purpose).
If my memory serves me right, such screws are called lock screws, before installation, the shaft is drilled through the hole, the screw is put on the paint (something like epoxy EP enamel)
Yes, here's another point - in the axis for the fan, the copper part with standard galvanized fasteners is used. This is an unacceptable combination of metals, especially for street construction. Metals form a galvanic pair, in the end we will have increased corrosion.

The wooden part is not "at will", but it is obligatory to cover it with waterproof varnish or paint, but pre-soak it with hot linseed oil.

Yes, since we are talking about materials - SD discs as blades, admittedly, do not look like a durable element. Moreover, the whole design is made quite reliably - metal elements, screws, threads, aluminum welding and then suddenly there are LED discs, most in harmony with crafts made from corrugated cardboard and ice cream sticks. It's funny of course - they flicker, shine, but the blades from something more durable, UV-resistant, frost-resistant at last would be more appropriate.
If you are in the mood to "rewind the motor with a silver wire at all costs" then you were sent to jewelers for a reason. In jewelry, there is a proven technology for producing silver wire. Pretty boring truth. Scrap silver is fused into a bar with a burner on gasoline vapors (higher temperature) in a boat crucible. The bar is passed through manual (or mechanical) jewelry rollers, annealing after each pass. We get a thin bar or wire. We pass this wire through a set of jewelry dies, constantly lubricating it with wax. In steps of a tenth of a mm, we approach the desired diameter. After each drawing, the wire is annealed, but not anyhow, but tightly rolled into a cove and wrapped in a thicker wire, otherwise it will burn out. How to apply varnish insulation can also be thought up - to walk like a walk! Yes! There is also such an area of ​​existence as high-end tube sound. Here sometimes, in especially dude cases, output transformers are wound with a silver wire. It must be assumed that there is somewhere a wire for this. But, my heart feels - a ready-made windmill for a couple of kW with a mast, installation work and a plot of land for this in the city center will be cheaper.
Author
Korolev Sumoist- Ninja sounds cool, but eats a lot)). I know one Georgian who lives fattening in Japan for sumo, in sumo fighters get a lot of grandmothers for victory, he says, because he is there, but such a diet is bad for health
New Standard
You can one SUMOista
No way, eats, scum a lot! aggressive
Author
Korolev Depends on weight and nutrition, you can one SUMOista))
New Standard
If there is a lot of methane, a scorching light will come out odorless. Saw Japanese TV
This is how many Japanese you need to settle in the toilet to get any practical effect? scratch
Author
Korolev If there is a lot of methane, a scorching light will come out odorless. We saw Japanese television, where the competition hto farts louder, or another category hto smelly))
I went to the toilet - you have light))
But first, gas, not the most fragrant! xaxa
Author
It seems that in Sweden there is a power station that works on the vital products of dogs that walk in the park,
a power plant illuminates the same park in the evening. I think with a toilet in the apartment, too, in the future they will stir up something similar for the generation of light or combustible gas. I went to the toilet - you have light))
Guest Alex
For calm, you need a toilet with pedals. Foot driven generator. You sit, you twist, you read a book, well, and everything else. :)
Author
For some, yes, I do not argue
Author
1:40 and 200 g is not true. There is less, but it’s more correct to say, weight per unit time (power) .To unscrew the shaft, you need to apply power, which increases with increasing wind speed, the reduction is selected so that the screw starts to rotate from a wind speed of 2-2.2 m / s, as well seen on VIDEO. As I said, from my experiments, the gearbox for such a screw should be up to 1:20 (in the photo it corresponds). In the photo there are only 2 gears with a small number of teeth. Also at the end of the article you can see the rotation of the screw and the noise of the gearbox. I don’t need 220 V, for LED lighting, for example, I need only 3 V
Guest Igor
Lord, what kind of garbage people make up, just to "light up" on the Internet!
... and even try to sell this inoperative design! For those who are not in the know: there are not enough blades to rotate the gearbox axis, the gear ratio of which (in the author’s photo) is at least 40: 1 To rotate the axis of this step-by-step motor, a force of 200 g is required. We multiply 200 (grams) by 40 (gear ratio) ... At the output we get 8 kg. It is with such salt that an effort must be made to ONLY CHECK this mechanism !!! Well, where do you find such a stream of air in the city?
In short, the author just needs money! So he is trying to suck in each gullible reader his crap, which, IF EVEN AND UNLOAD, will never give 220 volts more than 0.3 watts. What can be powered by this?
So it turns out that it will not rotate, it will not give current, but give money for this shit - give it back!
Author, are you an idiot?
Author
The idea is working because the gearbox is selected there, in the photo look there are only 2 not big gears! Look at the video, there you can barely hear the gearbox humming. The gearboxes in these motors are different (not only 2 rpm - 1: 11250), there are also 1: 6.25, 1: 12.5. I wrote experimentally checked for such a diameter should be no more than 1:20! There is enough power for lighting, you will see the electric circuit (I'll throw it off later), then you will understand everything
Guest oleg
the idea is not working from the beginning of the choice of generator. The DSM engine is designed for pulling chart paper in instrumentation, a gearbox with a large gear ratio (at the output of 2 rpm). It takes a lot of effort to crank it, and therefore a massive screw that just breaks this flimsy gearbox. And the output power is 3 kopecks. If an alternative power supply is made, then in order to replace it with central power supply. And you can charge a Chinese smartphone with a Chinese charger.
What is a RAM?
Here so some traders call the Car Charger, plug into the cigarette lighter, the output is USB! And with the converters I chose between efficiency and ease of implementation, I won, as always laziness! smile
Author
Ivan_Pokhmelev Thank you, SEPIC-so I understand the mixture of raising and lowering (2 in 1), they say efficiency is about 80%. And there are such only with voltage and current reducers, then on transformers (with efficiency of a toroidal transformer)?
Korolev What is a RAM? I need 4.2 volts directly to charge a lithium-ion, and in Paverbank I have a 5-volt input, there are stabilization losses up to 4.2 volts. In voltage converters, as they say in SEPIC, too, the greater the voltage difference, the lower the efficiency, then the more profitable is the middle in the voltage fluctuations, and also the SEPIC efficiency, they can flash, but higher than increasing or decreasing
voltage runs from 3 to 12 v, it must be "put in place" to 4.2 in
Well, I don’t know how much it is advisable to raise the voltage below 5 V, but to reduce 12 V (from solar panels) to 5 V (I charge Power Bank) I used the RAM. smile
Two options: either a SEPIC converter or a parallel stabilizer, roughly speaking - a powerful zener diode. The specific method depends on the weighted average value of the input voltage, on how the output voltage will be used, requirements for profitability, reliability, price.
Author
Ivan_Pokhmelev Palladium, but I understood that the wire there was not silver but an alloy of palladium with silver (Pd means palladium), it really has a high resistance. Yes, there he expressed himself too artistically: “equalize” it is necessary to “rectify tension” more scientifically and popularly.Here's a question for you: voltage runs from 3 to 12 volts, it must be "put in place" up to 4.2 volts. Relays, zener diodes - not suitable (they take a lot of current), which circuit is suitable?
Why do you need a palladium wire with a resistivity of 25 times greater than that of copper? ;)
Guest Nikolay
Pure silver wires do not exist. There are silver plated with technical silver, they are used in aviation, in airplanes and helicopters, of course, if there are no friends, then it is problematic.
The bridge rectifies the voltage, but how can it “equalize” it? And what is “balancing tension” in general?
Author
Ivan_Pokhmelev I put the diode bridge after the alternator, and then either the battery or commutator. I will discard the scheme separately in the subject. Here, while I’m thinking about transistor switches, can you tell me. In general, there it is necessary to switch the contacts when the voltage reaches 4.2 V, the relay will not roll, it eats a lot. Switching power (giving contact switching) up to 5 W (4.2V about 1.5A)
Author
And, you in that regard, but I thought that the new wiring, parallel, probably, will somehow affect the reliability (integrity) of the plaster)). At the expense of the impeller, there I have a fairly wide blade, which makes it a low start. Technologically, it’s easier to do than for example a 5-blade screw
I specifically developed this model for the city
and a windmill, you can not only to a high-rise building mount of course
If light is often cut down
did not understand
smile Is light often cut off in high-rise buildings? And as for reliability, well, this is a whole science, the Theory of Reliability was called during the years of my student youth. smile
Author
"decrease in reliability" - did not understand Pts. If you often cut down the light, or you have all the materials for creation and just fall into the basement with dust, then why not make
In the calm will have to endure not to go to the toilet))
C'mon, what if the window? yahoo But seriously, is it worth saving energy, costs and reducing the reliability of power supply of the premises? scratch
Author
citizen ralex Watch the video at the end of the article. Believe it or not, it starts from a wind speed of 2 m / s. It’s almost a little more than the speed of a person walking
Author
Korolev You will have to endure the calm not to go to the toilet)) In fact, there will be an accumulator, or switch to the calm in the calm then this is a matter of technology. You don’t have enough of an equator, but you won’t find 300 meters either, I would buy it or exchange it for a ready-made windmill with a lighting system
ralex
article from the category: “blah, blah, blah”, nothing! judging by the design, it will not even spin, or it will but only from a hurricane ...
For example, to light a toilet or bath
In the calm? By the way, did not consider the option of an impeller as an anemometer? I don’t know where to buy the silver wire, we used to get it from one NGO! My father, once upon a time, my father took away quietly to the country, answered my question: "Yes, you have these wires in the basement - you can encircle the equator!" smile
Author
Korolev For example, to light a toilet or bath. Then I will show the scheme, I’m still koumming over it.
Tell me where can I buy that silver wire PEVPdSrM-36-4-M? At leisure, I think to experiment with him.
Author
Here, without a hat, the installation screws are pointed at one end from the other under the hexagon. They connect the coupling to the gear shaft

Author
I always say that if you do something, it should be safe for you and everyone around you. Everything must be done reliably. It is sung in the design:
1) The profile is mounted on stainless screws and is also welded;
2) Used SD discs they are light 15 g each, and not discs from the grinder;
3) The generator itself is screwed to the 5-ma rack! M3 screws with stainless steel;
4) The propeller is connected to the gearbox shaft to 4 set screws with a hardness class of 10.9!;

In addition, it’s a “beaten dog”, it already withstood gusts of wind of 9.5 m / s, with such a wind some trees lost branches. Even if they specially throw a disk or screw from a height, they will fly not with stone, but partially plan. Also, tall houses often have a certain safe fall zone in the form of flower beds that are often fenced with a net and no one climbs there, because not only a windmill with CD drives can fall, but also a pillow, antenna, poorly flying dove, or even Babaesh!
not under the article, according to the clinic-))))
E. bat
According to GOST, this device is suitable for the category "Hazardous Electrical Equipment" !!! The author you, what do you bring under the article?
capless M3 screws
Or maybe not studs, but set screws?
then everything is leveled by the bridge.
What is it like?!
capless M3 screws
Studs or what?
Apparently dull in my old age, doesn’t reach me - what for? In a campaign, in nature, in a country house, in a fishing trip - of course, in a house - I don’t understand! scratch
Author
I partially agree, well, you probably read the SNiP, there it is NOT necessary if you close one side, then the same amount and do not get winds. The fact is that in different regions in different ways, for example, more than 50% of the annual wind rose falls on the share of the west and east winds, then it is beneficial for me to put on the wall of the house which is parallel to the west-east side. In addition, in cities as I often noticed the wind the direction is drafts between houses, and even if the wind is north, it can be directed from west to east, including due to turbulences between real estate.
That graphite grease based on lanolin (fat from sheep), I also don’t like Pts, it stinks)). But liquid also drains badly and dries out soon.
20 times (1:20) is more likely a recommendation up to that number, no more (for such a diameter of-320mm). At the expense of 2m \ s honestly I say I didn’t lie much, maybe 2.1m \ s, but less than 2.5 really measured . This is a bumblebee, yes I heard, and even at 0 degrees it collects the heat while the bee freezes

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