We make an impeller for a small fan. How to make different types of fans with your own hands

Hot. If I may say so, even too much. That is why you can think about how to make a fan. You will say that it can be purchased at the store. But, firstly, their cost increases significantly. Secondly, they are quickly dismantled and it is not always possible to find the necessary ones on store shelves. Therefore, several practical advice about how to assemble the fan. After all, it is quite possible to arrange even at home from available materials. Here are a couple of options.

How to make a fan based on an old cooler. If you have an old one, you can take it from there. Borrow a switch there as well. More to do homemade fan, you will need some kind of battery holder. There are many of them, you can take it from some broken toy or something else in the same vein. Of course, you will need the batteries themselves in the amount of several pieces. It remains to connect all these components together, and a simple fan will be ready. If you don’t want to bother with the holder, you can use a regular USB port to supply power. You can make a stand out of anything. It all depends specifically on your own imagination and what you have at hand.

You can, for example, make a stand out of an ordinary hard wire attached to something. It is not so important what materials will be used, but how stable the whole structure will be.

Another option, how to make a fan, may be useful for enthusiasts. An excellent tool for manufacturing will be computer disks. What else will be required? A motor from a simple toy, a cork left over from champagne, some kind of handy switch and a few batteries. We take the disk, and then we make as many cuts as we need the blades. It is necessary to leave about a centimeter to the inner edge. Then turn each of the blades slightly at an angle. It bends much better if the disk is heated, for example, over gas. Then you will need to insert a champagne cork into its center. If you make a small puncture in its center, for example, with an awl, you can easily attach the entire structure to some kind of pin. You will need to make a leg - absolutely any object in the form of a cylinder, which is able to accommodate batteries and wires, can act in its role.

You will also need to arrange the base for the entire unit - it can also be any, the main thing is that it is stable and can hold the structure on itself. It only remains to add a few additional tips- when cutting the blades, you need to make sure that each of them is approximately 45 degrees - in the end, about 8 parts will come out. The cork inserted into the center of the disk will need to be fixed with glue. In any case, the process should not cause you any difficulties.

If you have been thinking about how to make a fan, now you probably understand that it is very simple. Each of the proposed models is extremely easy to manufacture, and you will not need much time to create it. You don't need anything special, the above is enough. These fans are very handy and compact. You can put it on your desktop. Or, if there is such a desire, take it with you to the garage or to the dacha, where these devices will be cooling means. It is difficult to argue with the fact that they have tangible dignity - after all, these are collected, according to by and large, very useful things from different stuff.

As you can see, it is quite possible to make a fan on your own, from improvised materials, without bothering to go to the store and search for the unit that suits you. reasonable price. Everything is much easier.

Nowadays it is impossible to imagine a hot season without a fan. At this time, both large models and small ones are important. But, unfortunately, the latter are many times more expensive, and you will not find it in every store. suitable model. Do not rush to fork out - there is a way out!

In this article, we will give you some ideas on how to make a DIY fan at home. This process is quite exciting, so it will be possible to involve teenage children in it.

Cooler fan

This is the easiest way to make a home fan. For manufacturing, we need a cooler from an old computer. This part itself is already operational, we just have to correctly connect it to the wire.

If the future fan will be in close proximity to the computer, then a standard USB cable will do as a wire. We cut off the unnecessary edge of the cord with a small connector and strip the wires. Similarly, we clean the wires at the cooler.

Sometimes there are more than two wires in the cooler and USB cable, remember, we need black and red color of two wires in one and in the other element. We don't need the rest.

After stripping, we connect the red wire to red, black to black, the connections must be well insulated. After isolation, the fan is already quite working, it remains to come up with it original stand to your taste and glue it to the cooler. Everybody! The device is ready!

The speed of the cooler device is quite high, so you can safely use it as a fan for drying hands.

Disc construction

This device is more complex than the one made from a cooler. For manufacturing, we need a motor with a protruding iron rod. These motors can be taken from an old toy, VCR or player (the latter option is the most suitable, because it is the player that has a standard disk attachment). We connect the motor with the wires in the above way.

We cut the disk into eight future blades; when cutting, we do not reach the end of the inner edge. Slightly heat the disc to soften and bend the blades, like a conventional fan. Instead of a disc, you can use a plastic bottle.

We insert a cork from a bottle into the center of the blades, it is the cork that will be the connector of the motor and the blades. If the insert is too big, then carefully cut it with a knife.

Having connected all the details, we supplement finished structure stable stand. To do this, you can use a sleeve from a roll toilet paper and a second whole disk, which will serve as a common support.

To fasten parts to each other, it will be better to use high-quality glue, so that in the future the structure will last a long time and not crumble.

Fan made of two plastic bottles

This design is more complex, requires a more serious approach in manufacturing. The result is a great way to make some sort of DIY table or floor fan.

For the manufacture we need:

• two bottles of different sizes - 0.5 and 1.5 liters;
• small motor type 12 V DC;
• 7 thick tubes for drinks;
• power supply and connector to it;
• CD disk;
• hot glue and superglue;
• switch;
• plastic ties.

Accessories:

• marker;
• scissors or knife;
• insulating tape;
• soldering iron;
• wire cutters.

From a bottle with a smaller volume, we cut the blades, as indicated above. We make a hole in the center of the cork with a hot awl or nail. We put the cover on the engine and fix everything with hot glue.

We build a stand. We firmly glue the drinking tubes together with superglue - this is our future rack. We cut out the upper part from the second bottle and insert the glued tubes up to the middle of its length, not forgetting to fix the connection with superglue.

We install the engine with blades on a rack of tubes, additionally smearing everything with hot glue again. We hide the wires in tubes, so they are inside the rack. We fasten the design of the engine and the rack with plastic ties, gluing them along the tubes with hot glue and cutting off the remaining excess edges.

We cut holes in the bottom of the rack for the power supply connector and switch. We connect them, not forgetting about good insulation. We fix everything to the plastic with hot glue.

For weighting and stability of the base, we construct a bottom from a disk. To do this, simply glue the disc with the edges of the plastic bottle with hot glue.

We connect the power supply to the connector, and now - the fan is ready to work!

What to do if the household fan does not work?

So, we already know how to make a fan on our own. But in your household there is probably a faulty factory-made fan. The design of such products is simple (you can use the instructions), so for those who are especially curious, the final topic of the article will be repairing a floor fan at home.

Causes of the malfunction

We list the main problems in which the device does not work and possible ways their elimination.

The unit does not turn on. If the light is on, but the device does not turn on, then the cause is probably a broken button. If the light does not light up, then the reason is most likely in the cord or plug.

Weak rotation of the blades - a signal of insufficient lubrication of the bearing inside the engine.

The fan stopped rotating left and right. It's all about the crank, its mounting screws can loosen or unscrew.

Buzzing and no rotation. There are three possible causes of failure - lack of lubrication on the bearings, a broken capacitor or an electric motor.

DIY fan photo

It is very hot in the southern regions, nothing will prevent you from acquiring such a "super powerful" portable fan.

You can take an 18-volt electric drill motor, an RC airplane propeller, and a laptop battery. 4 volts is best option and not too noisy when working. At 12 volts the device will be heavy duty, loud and will "rattle" (due to vibration) on the table.

Required Components
The motor and batteries are the most expensive parts. You can buy a cheap used drill with a broken battery and just use the motor. Used laptop batteries usually have 6 cells and cannot work if one cell is dead. You can buy these batteries for next to nothing and use working cells to make a powerful battery (http://www.instructables.com/id/Free-lithium-Ion-Battery-Pack).

Required Parts:

• electric motor direct current electric drills;
• laptop battery;
• plastic fan blades;
• 1/8" plywood;
• plywood and 2x1" engine mounts;
• switch (in our case 2P2T switch for 2 speeds); - electric cable.

Checking the engine and batteries
Secure the fan motor to something solid.
You can try applying different voltages to it to adjust the desired wind strength. In our case, for a 4-volt battery, a current of 1.5A turned out to be ideal. An 8-volt battery for good power corresponds to a current of 3A.
Use 4 batteries, 4 in parallel at 4V and 2 sets of 2 batteries in parallel at 8V. So on low power they last about 5 hours, and at high power for about 1.5 hours.
Connect the 2P2T wires with a switch to switch between series and parallel circuit.

Creating an air duct and mounting the engine
First, glue the 2x1” bars together to form a T. Measure the pieces to give the propeller about half an inch of clearance on each side.
After gluing the bars, round off their edges to give them a streamlined look.
To mount the engine, cut 2 triangles out of wood. Soak a piece of 1/8" plywood in water, then bend it and let it dry. You can cut 3 3.5" strips of wood grain perpendicular to the piece to make it easier to bend. Use the T-stacks as a base and glue 3 pieces of plywood over it, overlapping the joints and leaving one joint. Then glue the 3 ends of the T to the duct plywood. It is important to also try on the motor mount to make sure there is sufficient clearance.
Then cut two pieces of 1/4" plywood about 4.5 x 1.5 to form the duct support at the top. Glue these supports to the duct and to the "T".

Glue a piece of wood to the "T" to stop the motor from sliding backwards as the motor pushes the air forward and the motor itself then pushes back.
You can use 2 zip ties to secure the motor from below.

Battery layout
Use a 6-cell laptop battery to power the fan. For a bicycle fan in motion, you need a 12V fan. As a desktop fan, 4V or 8V is more than enough.

Wires to the engine
Solder two 14 gauge wires to the motor. Insulate with tape. To prevent the wires from falling into the blades, secure them to the fan support.

Testing
Feed the motor in parallel with 2 sets of 3 combined cells. The voltage should be around 11.8V. Even the multimeter should read 3.38A. The multimeter has some resistance, so the current is actually around 4A. More than 47 watts. This is already a very powerful little fan. At 16V, this fan can already push the bike decently.

Installation of protection
The propeller rotates too fast, so you need to install protection.
Using wire cutters, cut a circle out of the large fan grille so that its radius is about half an inch larger than the duct. Wrap the wire around the duct. Then hot glue the front and back protection.

Switch installation
Install a switch. Now the fan can easily turn on and off. You can apply 2T2P switch, and get two rotation speeds.

Let's make a simple fan.
You will need:
1. 3V motor
2. Section for 2 batteries of 1.5 V. I took it in the CHIP and DIP store.
3. Switch.
4. Wire 15 cm.
5. Bobbins from fishing line or ropes, a jar from Polysorb, a jar of gouache.
6. Impeller from the cooler of the power supply.
7. Soldering iron.
8. Thermal gun.
9. Self-tapping screws 11 pcs. 2 cm long.

1. Take bobbins from threads with a diameter of 5 mm and a height of 4.5 cm - from a fishing line or cord.
Mark a hole for the switch with a marker and cut manicure scissors hole slightly smaller size switch and insert the switch into the reel:

2. Now we form the fan frame: let's make 3 reels together and mark four holes for bolts or self-tapping screws with a marker on the bottom of the upper reels. We burn holes through the edges of two bobbins:

3. Using a lighter, we melt and clean the red wire from the section with batteries and attach it to one switch terminal, and to the other - the second red wire. To isolate the terminals from contact with each other, fill them with hot glue:

4. We fasten the red wire to the plus + of the engine, and the black one, respectively, to the minus - of the engine:

5. The top can be made from a box of gouache: on the lid with a soldering iron we form a hole for wires and 3 holes for self-tapping screws. And on the box itself we cut a hole with nail scissors a little less than the diameter of the engine and place it inside. As in the case of a switch, you can pour hot glue on the outside for reliability.

6. We put the impeller from the cooler on the cork, fill the voids with plasticine or fill it with paraffin, make a hole in the cork with a self-tapping screw or an awl, fill it with epoxy glue or hot melt adhesive, and put it on the engine. If this epoxy resin- leave to dry for a day and only then turn it on!

The fan is not a complex device. It consists of a motor, blades, various adjustment buttons and a stand-case. There are additional elements, such as backlight, clock, but these are already options that are not so important.

It is not at all necessary to buy a fan, because it is quite possible to make it yourself. Moreover, this does not require special skills of the master.

With due skill, homemade model it will turn out not to be a way to get rid of old things, but an opportunity to show imagination and, possibly, hidden talents. Some craftsmen quite simply get both functional and extremely attractive options. They harmoniously complement the interior and become the center of attention no worse than any art object.

How to make a fan from a conventional electric motor

Probably the easiest and fast way to get a self-assembled home-made fan is to find an ordinary motor, which is most often found in toys.

Standard electric motor from a toy

Ordering such a thing is not difficult. Moreover, today, without stopping for a minute, caravans of various knick-knacks from the Celestial Empire ply. And if not, then just buy an inexpensive one. toy car and remove the motor from it.

But expect the impossible from such a device is definitely not worth it. Rather, it can only slightly drive air. But for desktop model will do quite well. He will be able to blow the face of the person sitting at the computer.

For such a fan, you can use absolutely anything. The main parts will be:

• blades;
• motor;
• on/off button;
• stand;
• supply system.

Otherwise, the limit of the idea will be only within the boundaries of fantasy.

After the motor is ready for use, it makes sense to take care of the power. These can be batteries, as in the toy for which the motor was intended. But, of course, such energy will not last long. However, there is a plus - the device will remain compact and mobile.

The second option is mains power. But in this case, don't overdo it. Direct connection through the plug is a sure way to burn out the motor. So do not experiment, trying to spin the engine up to high speeds. On toys, electric motors are usually designed for 3-4.5 Volts, and the desire to give more rotation due to powerful energy sources, firstly, will quickly land the source (if it is a battery), and secondly, it will seriously reduce the life of the fan up to breakage. The motor will start to heat up, the brushes may melt.

But modern chargers convert the voltage in the network, reducing it to set parameters. You can find a power supply, including on sale, which is ideal for the motor.

To create the blades, you can already take any material. The main thing is that it should be light. Due to the weakness of the motor, the less the blades weigh, the faster the rotations will be, and, therefore, the efficiency of the work.

• The easiest option is to take a cork from an ordinary plastic bottle, which will serve as a fastener for the blades. Make a hole in the bottle according to the size of the rotating axis of the electric motor.
• Blades can be made from a regular CD. A hole is burned in the center according to the size of the cork from the bottle. The circumference of the disk is divided into 8 sectors. They are cut for some distance, but not to the center. After that, the disk must be heated with fire in order to easily bend the blades. For this, a lighter is suitable.

Creating Blades on CD

• You can attach the disc to the cork with glue. The second option - when a hole is burned in the middle for the cork - immediately connect the structure. The melted plastic will harden and hold firmly.
• After all this, the structure is interconnected. Wire is suitable for the stand. This is perhaps the easiest option. And for such a light device, you can’t imagine better. You can bend the skeleton in such a way as to discreetly hide the batteries there. Or carefully run the power supply wire going to the motor.
• The circuit should not always be closed if batteries are used, so a button must be fixed on the case. She is inexpensive. You can use it from the toy from which the motor was removed.

Another version of the propeller device is the use of paper, only thick. The method is even simpler, but less practical.

Advice! When experimenting, remember that the larger the fan blade area, the more noisy it will be. On the other hand, small blades do not move air as efficiently.

How to make a paper fan

Paper is not the best suitable material for a home fan for the simple reason that it is very impractical. Any ingress of water, even banal humidity - and the device will rapidly begin to lose its rigidity.

But despite all the disadvantages, craftsmen even quite nice samples are made from paper. Of course, we are talking about thick paper or cardboard. Strong material from boxes is good. A regular motor or cooler, an on / off button and wires are also useful.

Simplest table fan using cardboard

An approximate design plan is that the device can be simplified as much as possible. The impeller is easy to cut and can have many or few blades. All at the request of the master. The motor can be mounted on a wooden or cardboard bar. The stand will also go from paper or an old computer disk.

It is only important not to forget that such a fan turns out to be very light, which makes it shaky in operation. Therefore, it is necessary to further strengthen the body. Old batteries, bolts or nuts are good.

How to make a plastic bottle fan

favorite raw material crazy hands» - plastic bottles - almost ideal for creating your own fan. For the propeller, the upper part of the standard round bottle. It is necessary to cut off the part with the cork just above the glued label.

• The part of the bottle with the cork will be the blades. To do this, the plastic before the cork needs to be cut so that several different petals are obtained. After one, the petals are cut off at the base. The rest are the future propeller blades.

Plastic bottle fan blades

• To shape the blades and twist them a little, you can use a candle or a lighter. The main thing is not to overdo it, because the plastic is soft and can catch fire. The task is to warm it up a little, and not set it on fire.
• The cork will be the base of the propeller. A hole is made in it according to the dimensions of the axis of the motor. To keep the connection firmly, you can put it on glue.
• Now is the time to think about the foundation. The rest of the plastic bottle is also suitable for it. A hole is cut in it to firmly place the cork with the blades at a right angle. It is necessary not to forget to weight the base - with nuts, bolts or any other metal objects.
• A hole is made on the base for the button and the chain is assembled. There is also enough space for the power supply.

Field for imagination when working with plastic bottle extensively. You can use several bottles at once. One will become a propeller (more precisely, part of it), and the second will become a good base. But then you will need Additional materials. For example, regular drinking straws.

Simple and lightweight bottle fan

How to make a usb fan

But the most convenient and simplest fan is exactly the old cooler, which can also be used. For example, put it on the table, and it will cool, only not the processor or video card, but the person.

The advantages of this design are obvious: the cooler is very reliable, because it is his job to constantly turn the impeller and cool something. Yes, and getting coolers is easy. Enough to either find old computer, or order a new fan or buy it in a store.

The cooler device is simple. This is a ready-made fan in a plastic case. Two wires (usually red and black) depart from it.

Regular computer cooler

Making a USB fan is a matter of minutes:

1. The wires on the cooler are stripped by 1-2 centimeters.
2. A regular USB cable is taken, at the end of which you also need to get rid of the insulation. The standard USB cord has four wires inside. Of these, you should choose black and red. Cut off the rest so as not to interfere, and clean up the necessary ones.
3. Connect the red wire of the cord to the red one on the cooler. Black - with black. Carefully insulate areas without winding. Ready.
4. It remains only to think about the holding device. Here the already familiar wire, which takes any shape, can come in handy. For a fan case, it will do even cardboard box, and if you spend a little more time and effort, you can even build a real design object.

Design approach to the design of the fan

It is very convenient when the fan turns on when you start the computer. In addition, modern blocks have several USB outputs at once. It turns out that such a device will not interfere.

Another point - sometimes you want to turn on the fan regardless of the computer's operation (especially since a device with a cooler turns out to be quite powerful, good and useful). Then you can use adapters. For example, phones today make chargers that easily turn into a USB cord when the plug is disconnected. Similar equipment can also be used for a fan, making it universal: powered from the network and from the USB port of any computer. Another plus of this design is the simplest electrical circuit. A cooler-based fan can even do without extra buttons: just a wire and a plug.

DIY bladeless fan

But a slightly uncommon use of a free cooler (but you can get by with an electric motor) is a bladeless fan. Modern, interesting, with due skill - no less effective - a solution that definitely attracts the eye. The thing turns out to be completely non-standard, spectacular.

For example, here's the perfect appearance bladeless or duct fan model:

This is how you can make a bladeless fan with your own hands

The most important thing about bladeless models is, of course, their appearance. Therefore, if you make such a device yourself, then you need to try to think through the frame in great detail. Rough edges, roughness - all this will spoil the impression.

Frame bladeless fan is almost entirely a workspace. Do not think that some space technologies are implemented here.

Air circulation is carried out quite prosaically - with the help of rotating blades. They hide in a tuba base. If you take a cooler from a computer, then you can make a stand according to its shape. Here, as they say, at the discretion of the author.

The differences from the classics are in the location of the cooler - it is placed horizontally in a bladeless fan.

Location of the cooler in a bladeless fan

The upper ring is made hollow inside, two-layer. There, the main redirection of air in the right direction is carried out.

A hollow cavity is visible in the upper ring of the fan, from where air blows

You can make the frame of a bladeless fan out of plastic, wood, thick cardboard. It is better to use a flexible material so that it can be easily shaped into a ring. Alternatively, use a combined structure. For example, rings are made of cardboard or plastic, and the frame is rigid - made of wood.

You need to cut out:

• four faces for the stand;
• Two circles of the same radius;
• Twist two rings of different diameters.

Then everything is connected together, if necessary - painted.

Meals can be organized in different ways. A universal option - a combined cable for a USB connector and a plug-in plug for an outlet.

The device can also be slightly complicated. For example, make a light strip along the edge of the rim from diode tape. The backlight consumes little energy, but it will add beauty to the fan. And the power supply and wiring, if necessary, can be easily hidden in the stand.

How to make a powerful fan with your own hands

When it comes to powerful fans, then you need to understand that they require completely different engines. Starting from the motors of old fans, ending with others household appliances. Well suited:

• unnecessary ceiling chandeliers with fan;
• old lawn mowers;
• drills;
• hoods.

The only thing you need to get into the voltage corridor, which is required to power the motor. For example, drills most often need 18 volts. But for ventilation purposes, it will be sufficient to supply less than half of this voltage. Even at 12 volts, the fans are very loud and extremely unstable due to the strong inertia of the rotating blades.

Power for powerful electric motors must be done from the network. Therefore, you need to think about installing a power supply or connecting a charger. The wiring diagram can be complicated by adding light bulbs lying around, Digital Watch, radio, toggle switch or board for switching operating modes. But it's easier, of course, to limit yourself to only a fan with a button, if that's enough.

In any case, such homemade variations of homemade fans are sometimes much better than even purchased options. With proper skill, a very good thing can turn out, the real pride of the owner.