What to do if the domestic fan does not work?
So, how to make a fan yourself, we already know. But in your household you probably have a faulty factory-made fan. The design of such products is not complicated (you can use the manual), so for the especially curious, the final topic of the article will be. repair of the floor fan at home.
The fan from the cooler
This is the easiest way to make a house fan. To make this part, we need an old computer cooler. This part itself is already functional, all we need to do is to connect it correctly to the wire.
If the future fan will be located in the immediate vicinity of the computer, the wire will work as a standard USB wire. Unnecessary edge of the cord with a small connector is cut off and stripped the wire. Strip the wires from the cooler in the same way.
Sometimes there are more than two wires in the cooler and the USB cord, remember, we need black and red two wires in one and in the other element. We do not need the rest.
After stripping, connect the red wire with the red, black. with black, connections must be well insulated. After insulation the fan is already quite working, the only thing left is to think up an original stand on your taste and glue it to the cooler. All! The device is ready!
The speed of the cooler is quite high, so you can safely use it as a hand drying fan.
Some suitable materials
There are several options for suitable materials to create blades and a cone for the fan:
Plastic base. It is a favorite material for constructors to make fan-like devices. The plastic blades are made from the top of the bottle, which is closer to the neck. The whole part is cut off, right down to the plug. A plastic bottle is also used to make a cone and base for the fan. The second part is usually constructed from the bottom of the plastic bottle. Sometimes additional parts are needed: beverage tubes or cardboard.
Plastic blades for a fan
Cooler as part of the cone and fan blades
Example of constructing blades from a disk
Types of equipment
First of all, the hoods-suckers differ in terms of pressure. Ventilation can be carried out in conditions:
The first type of hood is suitable for use in both industrial and domestic environments. As a rule, such equipment is compact enough, so it can be installed without additional assistance.
Fans with medium pressure are used for industrial purposes. Such equipment is easier to withstand harsh operating conditions, it is equipped in accordance with basic fire and technical requirements in production.
The third option is used not only in workshops, but also in laboratories, warehouses, paint rooms, etc.д. They can be installed for blowing air conditioning systems or working machines or for blowing air in boiler systems.
Depending on the quality and degree of wear and tear of the construction, there are general exhaust-slug, heat-resistant, corrosion-resistant systems, as well as heavy-duty equipment that can withstand even explosive reactions.
In most cases, snail-shaped air ventilation systems are used to remove gravel, wood shavings, metal chips and other production residue from the room. Their installation must be carried out with due regard to health and safety requirements.
The fan is mounted inside the base directly below the air intake housing with four wood screws to hold the fan securely in place. The fan is mounted in such a way that it blows air upwards, so we need to make the fan sufficiently stable.
A pair of air intakes is made just below the server fan on both sides of the base tube, t.е. base pipes. These inlets allow air to be sucked into the base.
To prevent someone from accidentally injuring their fingers by inserting them into the base of the fan, glue a metal mesh on both holes. The mesh is first painted black matte and then glued inside the base with hot glue.
How to make a fan from an ordinary electric motor
Probably the easiest and fastest way to get your own homemade fan is to find a common motor, which is often found in toys.
The standard electric motor from the toy
To order such a thing is not difficult. over, today, without stopping for a minute, caravans of different knickknacks from the Celestial Empire are cruising. And if not, it is enough to buy an inexpensive toy car and remove the motor from it.
But you should not expect the impossible from such a device. Rather, it will only be able to pump air lightly. But for a desktop model is good enough. It 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:
Otherwise, the limit of the idea will consist only in the limits of imagination.
Once the motor is ready for use, it makes sense to take care of the power supply. It can be batteries, as in the toy, for which the motor was designed. But, definitely, this kind of power will not last long. However, there is a plus. the device will remain compact and mobile.
The second option is to power from the mains. But in this case it is necessary not to overdo it. Direct plugging in is a sure way to burn out the motor. So do not experiment, trying to spin the motor to high revolutions. On toys, electric motors are usually designed for 3-4.5 volts, and the desire to give greater rotation at the expense of powerful sources of energy, firstly, will quickly land the source (if it is a battery), and secondly, seriously reduce the life of the fan up to breakage. The engine will start to heat up and the brushes may melt.
But here modern chargers convert the voltage in the network, reducing it to specified parameters. You can find a power supply, including on sale, which will fit the motor perfectly.
You can already use any material to create the blades. The main thing is to keep it light. Because of the weakness of the motor, the less will be the weight of the blades, the faster will be the rotation and, therefore, the efficiency of work.
- The easiest option is to take a cork from an ordinary plastic bottle, which will serve as a mount for the blades. Make a hole in the bottle to the size of the rotating axis of the electric motor.
- The blades can be made from an ordinary CD. In the center of the hole is pierced to the size of the cork from the bottle. The disk’s circumference is divided into 8 sectors. They are cut to a certain distance, but not to the center. After that the disk should be heated in a fire to bend the blades easily. A lighter is suitable for this.
Creating blades on a CD
- To attach the disk to the plug can be glued. The second option is when the hole in the middle for the plug will be burned. to connect the construction at once. The melted plastic hardens and holds firmly.
- After all this design is connected to each other. The wire is good for the stand. This is probably the easiest variant. And for such a lightweight device, you can’t think of a better one. Bend the frame so that you can hide batteries there unnoticeably. Or carefully let the wire of the power supply going to the motor.
- The circuit should not always be closed if you use batteries, so a button should be attached to the body. It’s inexpensive. You can use it from the toy, from which the motor was removed.
One more variant of propeller device is to use paper, but dense. The way is even easier, but less practical.
Tip! Experimenting, remember that the more surface area the fan blades, the noisier it will be. On the other hand, small blades are not as effective in driving air.
How to make a mini-fan?
Let’s start with the easiest part: making the blades. If you take a square of ordinary sheet of paper, cut it diagonally, leaving the center about a centimeter intact, you will get a blank for the turntable. Then 4 sharp corners are bent to the middle and strung in turn on a nail, having previously stuck it in the center of the workpiece. That’s it! Too bad it is just a child’s turntable.
For a functional and useful design, you take two CDs or DVDs. One will make the paddles, and the other will make a stand for the device.
The used-up circle is cut into several equal parts (from the edge to the center). To make the process easier, you can hold the plastic over the fire for a few seconds. Each of the resulting sectors of the softened billet is slightly rotated around its axis to make a propeller.
What other accessories do you need to assemble a handy mini fan? Here’s the list:
How to Make an Electric Table Fan using Bottle. Easy Way
- Wine bottle cork.
- Cardboard or plastic tube for attaching the motor to the stand.
- A small motor.
- Two wires.
- Cable with USB contact or batteries.
- Good glue, scissors, a strong large nail or awl.
Powerful fan with your own hands. How to make different types of fans with their own hands Making a fan impeller with their own hands
Centrifugal fan is used as a duct fan. To simplify things, let’s say that a vacuum cleaner contains something similar to a ducted fan. Now think about it:
- Dust is sucked up with a hose.
- Passes into the bag (tank, compartment).
- Passes through filtration.
- Mines the motor.
- Throws from the back of the case.
What makes it work: there is a centrifugal fan inside, formed by a drum (squirrel cage) slung on the motor shaft. This is not enough. The motor with the impeller is encased in a sealed casing with channels for the air to escape. Without a tight shroud, the centrifugal fan loses its purpose. Here is the main difference. Unlike axial fans, often used for personal human needs, centrifugal fans are used in the economic sphere: ventilating the room, cleaning, cleaning the air. To understand how to make a centrifugal fan, let’s study the principle of operation of the device.
What is a centrifugal fan?
The centrifugal fan is used as a duct fan. To simplify things, let’s say that a vacuum cleaner contains something similar to a duct fan. Now think about it:
- Dust is sucked up by a hose.
- Passes into a bag (tank, compartment).
- Passes through filtration.
- Passes the motor.
- Discharged from the back of the housing.
Due to what we get: there is a centrifugal fan inside, formed by a drum (squirrel cage), put on the motor shaft. It’s not enough. The engine and impeller are encased in a sealed casing with ducts that carry the air to the outside. Without a tight casing, the meaning of a centrifugal fan is lost. Here is the main difference. Unlike axial fans, often used for personal needs, centrifugal fans are used in the economic sector: ventilation, cleaning, air purification. To understand how to make a centrifugal fan, let’s study the principle of operation of the device.