From time to time there is a need for a kind of fan, but small models cost relatively much. Do not rush to fork out, because a small fan can be easily made with your own hands. In terms of efficiency, it is not inferior to purchased counterparts, and its creation will require a minimum amount of materials.
Creating a fan from a cooler
The easiest way to make a fan yourself is to use an unnecessary cooler (these are used in a computer as a cooling system for components).
The cooler itself is quite functional, but you need to prepare it for a non-standard way of using it:
If the fan is located near the computer, an ordinary unnecessary USB cable will do. It needs to be cut and the insulation removed (same with the cooler wires):
We are only interested in two wires: red (plus) and black (minus). If there are other colors in the cooler or USB cable, feel free to cut them off and isolate them, because they are absolutely unnecessary and will only interfere.
After cleaning, the wires must be connected to each other (it is enough to twist them tightly with each other). Don’t mix up the colors. This threatens with serious complications in the process of creating a fan.
For twisting, 10 mm length is enough. If necessary, it is allowed to clean most of the wire, this is not scary, but much more will have to be insulated.
Remember that proper insulation is the key to success and a guarantee that the computer or outlet will not short out. Bare wires should be sealed with electrical tape (only in the absence of power), and the thicker it is, the better.
In principle, computers are not afraid of such moments if they are equipped with protection against voltage surges. But when a wall outlet is used, fixing the wiring in the apartment will be much more difficult than creating a small fan.
Therefore, seriously take care of the insulation of bare parts of the wires. Extra complexity is rarely needed.
- Final touches.
Do not forget that a computer cooler is very light, but at the same time very fast. Even with a voltage of 5 volts, its speed will be quite high. We consider this voltage for a reason: the cooler will perfectly cope with its task, and the operation will be as silent as possible.
Due to the small dimensions of the device, vibration and vibration may cause it to fall. This should not be allowed for the following reasons:
- such a cooler cannot cause lethal cuts even during operation, but there are no guarantees that the device will not jump up and fly off, for example, in the face;
- falling on a non-flat surface (on a pencil, pen, lighter), its blades can be damaged: fragments broken off at such a rotation speed can cause irreparable damage;
- other unforeseen circumstances.
Therefore, it is important to fix the cooler (with adhesive tape, glue) on some more stable surface: a box, a wooden block, a table.
- Additional functions.
If desired, the finished fan can be updated externally, add a switch (so as not to pull out the cord every time), etc. But attention is also paid to a method that relatively well increases the efficiency of the device.
Simply cut off the top of a plastic bottle and glue it (with a wide hole) to the cooler frame. Thus, the air flow will be more precise and directed: the force of air movement will be stronger by about 20%, which is a pretty good indicator.
This completes the creation of the fan, and it is ready for full-fledged work.
If the previous option does not suit you, and you want something more complex, then consider creating a fan yourself from computer disks:
Since we do not use a cooler, it is necessary to acquire some kind of motor that sets the blades of our future device in motion. In fact, you can use the motor of the already mentioned cooler of the cooling system, but this is too simple.
You should find or buy a motor with a certain part of it moving (for example, a protruding iron rod). Since we are making a fan from disks, then having such a rod would be the best option. Motors from an old VCR or player are also great, because they spin discs and cassettes — just what we need for a spinning propeller in our fan.
Don’t use a motor from a washing machine or even a past fan — they are extremely strong. Due to self-assembly of the structure, it will be very flimsy. A strong motor in the first few seconds will spread the fragments of the blades around the room and fly off the base.[/stextbox]
If there is a running motor, it must be fastened with wires in the previously mentioned form.
With a running engine on hand, we need to concentrate on the disks, which are the main components of our fan. First, cut one into 8 equal pieces:
After that, the disk should be slightly heated with a lighter to make the material more pliable, and bend the wings in the manner of the blades, like conventional fans:
You can do the same with a regular plastic bottle:
In the center of our propeller you need to put a wooden bottle cap. If the size is too big — it can be planed.
- The rest of the parts.
As a center holding the entire structure, you can use a regular toilet paper roll sleeve:
It should be fixed in the center of the second disk, which will serve as the foundation for the fan. From above, you can place half of the second sleeve, as seen in the photo, so that the motor is inside it. On it you need to hang the blades from the disk / bottle.
The fan is ready to work. Optionally, you can add decorative elements to make the device look more presentable.
And you can see clearly how such a fan is made from a bottle in this video.
Tips & Tricks
Additionally, you should recall the extremely important points when creating a homemade fan:
- To fasten the parts to each other, you must use high-quality “superglue”.
It is the one that cannot be peeled off even if desired. The entire structure must be as stable as possible and not succumb to vibrations and vibrations. Responsibly and cover everything you see with glue, except for the blades and internal parts of the engine.
- Take your time.
You run the risk of missing an important detail, and this greatly increases the chances that something will go wrong during the operation of the finished fan. The consequences can be very serious.
- Don’t use bad parts.
If you do not need the motor that is used to create the engine, its performance may be in doubt. Make sure it lasts for a while and will be effective.
Building an engine from scratch is a highly specialized process and requires good knowledge. Make sure that the motherboards are in order, all the necessary connections are soldered well, etc. It is better to check once again than to make another fan later.
We remind you once again: do not forget about the high-quality winding of wires with electrical tape. You should not save it, because short circuits and their repair will force you to sacrifice big expenses. Perhaps even in terms of money.
A hand-held fan is quite compact, efficient and does its job well. It is not difficult to make it if you take the procedure responsibly and follow the instructions. There are no restrictions on dimensions either: if you feel strong, feel free to start assembling a larger fan.