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 the best option, and it’s not too noisy during operation. At 12 volts, the device will be super powerful, loud, and will "rattle" (via vibration) on the table.
Required components
The motor and batteries are the most expensive parts. You can buy a cheap used drill with a bad battery and just use the motor. Used laptop batteries usually have 6 cells and will not work if one cell is dead. You can buy these batteries for next to nothing and take the 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" blocks for engine mounting;
- switch (in our case, 2P2T switch for 2 speeds); - electrical cable.
Checking the engine and batteries
Secure the motor and fan 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, the ideal current was 1.5A. An 8-volt battery for good power corresponds to a current of 3A.
Use 4 batteries, 4 parallel 4V and 2 sets of 2 parallel 8V batteries. So at low power they will last about 5 hours, and at high power for approximately 1.5 hours.
Connect the 2P2T wires with a switch to switch between series and parallel circuits.
Creating an air duct and mounting the engine
First, glue the 2x1” pieces together to form a T. Measure the pieces to give the propeller about a half inch of clearance on each side.
After gluing the bars, round their edges to make them streamlined.
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 timbers held together in a T as a base and cover it with 3 pieces of plywood, overlapping the joints and leaving one joint. Then glue the 3 ends of the T to the duct plywood. It is also important to try on the engine mount to make sure there is enough 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 then pushes back.
To secure the motor from below, you can use 2 zip ties.
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 desk fan, 4V or 8V is more than enough.
Wires to the motor
Solder two 14 gauge wires to the motor. Insulate with electrical tape. To prevent wires from getting caught in the blades, secure them to the fan support.
Testing
Power the motor in parallel with 2 sets of 3 combined cells. The voltage should be about 11.8 V. Even the multimeter should show 3.38 A. The multimeter has some resistance, so the current is actually about 4A. More than 47 W. This is already a very powerful little fan. At 16 V, this fan can already push a bike decently.
Installation of protection
The propeller rotates too quickly, so protection will need to be installed.
Using wire cutters, cut a circle from the large fan guard so that its radius is about half an inch larger than the duct. Loop the wire around the duct. Then hot glue the protection to the front and back.
Switch installation
Install the switch. The fan can now be turned on and off easily. You can use a 2T2P switch and get two rotation speeds.
The fan is not a complicated 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 options that are not so important.
It is not at all necessary to buy a fan, because you can easily make one yourself. Moreover, this does not require special skills of a master.
With the right skill, a homemade model 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 easily create 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 regular electric motor
Probably the simplest and quick way To acquire a homemade fan assembled with your own hands, you need to find a regular 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 trinkets from the Middle Kingdom ply. And if not, then it’s enough to buy an inexpensive one toy car and remove the motor from it.
But you definitely shouldn’t expect the impossible from such a device. Rather, it will only be able to move air slightly. But for desktop model It will do just fine. He will be able to blow air onto the face of someone 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 only be within the boundaries of imagination.
After the motor is ready for use, it makes sense to take care of the power supply. These could be batteries, just like in the toy for which the motor was intended. But definitely this kind of 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 you need not to overdo it. Direct connection via a plug is a sure way to burn out the motor. So you shouldn’t experiment, trying to spin the engine to high speeds. On toys, electric motors are usually designed for 3-4.5 Volts, and the desire to provide more rotation due to powerful energy sources, firstly, will quickly drain the source (if it is a battery), and secondly, will seriously reduce the life of the fan, even to the point of failure. The engine will start to heat up and the brushes may melt.
But modern chargers convert the voltage in the network, reducing it to the specified parameters. You can find a power supply, including on sale, that is ideal for the motor.
To create blades, you can take any material. The main thing is that it is light. Due to the weakness of the motor, the less the blades weigh, the faster the rotation will be, and, therefore, the efficiency of the work.
- The easiest option is to take a cork from a regular plastic bottle, which will serve as a fastening for the blades. Make a hole in the bottle the size of the rotating axis of the electric motor.
- The blades can be made from a regular CD. A hole the size of a bottle cap is burned in the center. The circumference of the disk is divided into 8 sectors. They are cut to some distance, but not to the center. Afterwards, the disk needs to be heated with fire to easily bend the blades. A lighter is suitable for this.
Creating blades on a CD
- You can attach the disk to the cork with glue. The second option is when a hole is burned in the middle for the plug - immediately connect the structure. The melted plastic will harden and hold firmly.
- After all this, the structure is connected to each other. Wire is suitable for the stand. This is perhaps the simplest option. And for such a lightweight device, you can’t imagine anything better. You can bend the frame in such a way as to hide the batteries there unnoticed. Or carefully run the power supply wire going to the motor.
- The circuit does not have to be always closed if you use batteries, so you need to secure the button to the case. It's inexpensive. You can use it from a toy from which the motor was removed.
Another option for a propeller design is to use thick paper. The method is even simpler, but less practical.
Advice! When experimenting, remember that the larger the fan blade area, the noisier it will work. On the other hand, small blades do not move air as efficiently.
How to make a fan out of paper
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 hardness.
But even despite all the disadvantages, craftsmen They even make quite nice samples from paper. Of course, we are talking about thick paper or cardboard. Strong material from boxes works well. You will also need a regular motor or cooler, an on/off button and wires.
Simplest table fan using cardboard
The 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. Everything is at the master's request. The motor can be mounted on a wooden or cardboard block. The stand will also be made from paper or an old computer disk.
It is only important not to forget that such a fan is very light, which makes it shaky in operation. Therefore, it is necessary to further strengthen the body. Old batteries, bolts or nuts work well.
How to make a fan from a plastic bottle
Crazy Hands' favorite raw material is plastic bottles - almost ideal for creating your own fan. The top of a standard round bottle works well for the propeller. You need to cut off the part with the cork just above the pasted label.
- The part of the bottle with the cork will be the blades. To do this, you need to cut the plastic down to the cork so that you get several different petals. After one, the petals are cut off at the base. The remaining ones are future propeller blades.
Fan blades made from a plastic bottle
- You can use a candle or lighter to shape the blades and twist them a little. The main thing is not to overdo it, because the plastic is soft and can catch fire. The goal is to warm it up a little, not set it on fire.
- The plug will be the base of the propeller. A hole is made in it according to the dimensions of the motor axis. To keep the connection firmly, you can put it on glue.
- Now is the time to think about the foundation. The rest of a plastic bottle will also work for this. A hole is cut in it to rigidly place the plug with the blades at a right angle. You must remember to weigh down 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 a power supply.
The field for imagination when working with a plastic bottle is vast. You can use several bottles at once. One will become a propeller (more precisely, part of it), and the second will become a solid foundation. But then they will need Additional materials. For example, ordinary drinking straws.
Simple and lightweight bottle fan
How to make a USB fan
But the most convenient and simple fan is an old cooler, which can also be used. For example, put it on a table, and it will cool, but not the processor or video card, but a person.
The advantages of this design are obvious: the cooler is very reliable, because it is its job to constantly turn the impeller and cool something. And it’s easy to get coolers. It is enough to either find an old computer, or order a new fan or buy it in a store.
The cooler design is simple. This is a ready-made fan in a plastic case. There are two wires coming from it (usually red and black).
Regular computer cooler
Making a USB fan takes just a few minutes:
- The wires on the cooler are stripped 1-2 centimeters.
- Take a regular USB cable, at the end of which you also need to get rid of the insulation. The standard USB cable has four wires inside. Of these, you should choose black and red. Cut off the rest so as not to get in the way, and clean up the necessary ones.
- Connect the red wire of the cord to the red one on the cooler. Black - with black. Carefully insulate areas without winding. Ready.
- All that remains is to think about the holding device. Here the already familiar wire, which can take any shape, can come in handy. Even suitable for a fan housing cardboard box, and if you spend a little more effort and time, you can even build a real designer object.
Design approach to fan design
It is very convenient when the fan turns on when the computer starts. Besides, modern blocks have several USB outputs. It turns out that such a device will not interfere.
Another point is that 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, today they make chargers for phones that easily turn into a USB cable when the connector with the plug is disconnected. Similar equipment can be used for a fan, making it universal: operating from the network and from the USB port of any computer. Another advantage 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 unusual use of a free cooler (but you can get by with an electric motor) is a bladeless fan. Modern, interesting, with the right skill – no less effective – a solution that definitely attracts the eye. The thing turns out to be completely non-standard, spectacular.
For example, here is the ideal appearance bladeless or duct fan model:
This is roughly 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, you need to try to think through the frame in the smallest detail. Uneven edges, roughness - all this will spoil the impression.
Frame bladeless fan is almost entirely a work area. Don’t think that some kind of space technology is being implemented here.
Air circulation is carried out quite prosaically - with the help of rotating blades. They hide in the base tube. If you take a cooler from a computer, 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.
Cooler location in a bladeless fan
The top ring is made hollow inside, two-layered. 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 the air blows
You can make the frame of a bladeless fan from plastic, wood, or thick cardboard. It is better to use a flexible material so that you can easily give it the shape of a ring. An alternative is to use a combined structure. For example, the rings are made of cardboard or plastic, and the rigid frame is made of wood.
You need to cut:
- four sides for a stand;
- Two circles of the same radius;
- Twist two rings of different diameters.
Then everything is put together and, if necessary, painted.
Meals can be arranged in different ways. A universal option is a combined wire for the USB connector and a plug for the socket.
The device can also be a little more complicated. For example, make a light strip of diode strip along the edge of the rim. The backlight consumes little energy, but will add beauty to the fan. And the power supply and wiring, if necessary, can easily be hidden in the stand.
How to make a powerful fan with your own hands
When it comes to powerful fans, you need to understand that they require completely different motors. Starting from old fan motors to other household appliances. Good fit:
- unnecessary ceiling chandeliers with fan;
- old lawn mowers;
- drills;
- hoods.
The only thing is that you need to get into the voltage corridor that is required to power the motor. For example, drills most often require 18 volts. But for ventilation purposes, it will be enough 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 supplied from the mains. Therefore, you need to think about installing a power supply or connecting charger. The electrical circuit 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 the right skill, you can get a very good thing, a real pride of the owner.
Creating air flow with high density possible in several ways. One of the most effective is a fan. radial type or "snail". It differs from others not only in shape, but also in its operating principle.
Fan device and design
Sometimes an impeller is not enough for air movement and power unit. In conditions of limited space, a special type of exhaust equipment design should be used. It has a spiral-shaped body that acts as an air channel. You can make it yourself or purchase it already finished model.
To form a flow, the design provides a radial Working wheel. It connects to the power unit. The wheel blades have a curved shape and create a discharged area when moving. Air (or gas) enters it from the inlet pipe. When moving along the spiral body, the speed at the outlet increases.
Depending on the application centrifugal fan snail maybe general purpose, heat-resistant or corrosion-resistant. It is also necessary to take into account the amount of air flow created:
- low pressure. Application area - production workshops, Appliances. The air temperature should not exceed +80°C. Mandatory absence of aggressive environments;
- average pressure value. It is part of exhaust equipment for removing or transporting small fraction materials, sawdust, grain;
- high pressure. Forms an air flow into the fuel combustion zone. Installed in many types of boilers.
The direction of movement of the blades is determined by the design, and, in particular, by the location of the outlet pipe. If it is located on the left side, the rotor should rotate clockwise. The number of blades and their curvature are also taken into account.
For powerful models you need to do it yourself solid foundation with housing fixation. The industrial installation will vibrate strongly, which may lead to its gradual destruction.
Self-production
First of all, you need to decide functional purpose centrifugal fan. If it is necessary for ventilation of a certain part of the room or equipment, the housing can be made from scrap materials. To complete the boiler, you will need to use heat-resistant steel or make it from stainless steel sheets yourself.
First, the power is calculated and the set of components is determined. The best option The snail will be dismantled from old equipment - an extractor hood or a vacuum cleaner. The advantage of this manufacturing method is the exact match between the power of the power unit and the body parameters. A snail fan can be easily made with your own hands only for some applied purposes in a small home workshop. In other cases, it is recommended to purchase a ready-made industrial-type model or take an old one from a car.
Procedure to make a centrifugal fan with your own hands.
- Calculation overall dimensions. If the device will be installed in a confined space, special damper pads are provided to compensate for vibration.
- Manufacturing of the body. In the absence of finished design You can use plastic sheets, steel or plywood. In the latter case Special attention is given to sealing joints.
- Installation diagram of the power unit. It rotates the blades, so you need to choose the type of drive. For small designs, a shaft is used to connect the motor gearbox to the rotor. IN powerful installations A belt type drive is used.
- Fastening elements. If the fan is installed on the outer casing of, for example, a boiler, mounting U-shaped plates are made. With significant power, it will be necessary to make a reliable and massive base.
This general scheme, according to which you can make a functional exhaust centrifugal unit with your own hands. It may change depending on the availability of components. It is important to comply with the housing sealing requirements, as well as ensure reliable protection power unit from possible clogging with dust and debris.
The fan will make a lot of noise during operation. Reducing this will be problematic, since vibration of the housing during the movement of air flows is almost impossible to compensate with your own hands. This is especially true for models made of metal and plastic. Wood can partially reduce background noise, but at the same time it has a short service life.
In the video you can see the process of manufacturing a case from PVC sheets:
Review and comparison of production ready models
Considering radial fan snail, it is necessary to take into account the material of manufacture: cast aluminum body, sheet or stainless steel. A model is selected based on specific needs; consider an example of serial models in a cast case.
Throughout the long winter, we look forward to pleasant summer days, and with the onset of hot weather, for some reason we begin to dream of coolness. How delightfully a light breeze created by a small homemade fan. Plus its production is incredible. interesting activity, right?
We invite you to familiarize yourself with step by step instructions on assembling protozoa efficient devices from literally waste raw materials. The article presented to your attention describes in detail how to make a fan with your own hands and what a home craftsman will need for this.
At your disposal detailed description manufacturing options whose effects have been tested in practice. You can make such devices yourself without having any experience at all. For a complete understanding of the information, attached step by step photos and video instructions.
The simplest fan can be made from CD discs. It can be used, for example, to locally influence a user who for a long time spends time at the computer.
Let's prepare starting materials to do the job:
- CD discs – 2 pcs.;
- low-power motor;
- wine bottle cork;
- cable with USB plug;
- a tube or rectangle made of thick cardboard;
- soldering iron;
- candle or lighter, hot glue;
- pencil, ruler, squared paper.
For our purposes, you can use a motor from old toy, for example, from a typewriter. A toilet paper roll slightly decorated with decorative finishing paper can be used as a cardboard tube.
The main advantage of this model is that almost any do-it-yourselfer will have all the materials needed for its manufacture.
The assembly process of the mini fan is quite simple.
Let's take one of the CDs and use a marker to divide its surface into eight identical sections. The easiest way to do this is to use a sheet of checkered paper.
Draw a cross on it from a horizontal and vertical line. We divide each of the four resulting right angles in half. Using cells, this is not difficult to do.
Using a very simple method using a checkered piece of paper, we can achieve the ideal layout of the disk into eight equal sectors
We place a disk on our drawing so that the intersecting lines are in the very center of its hole. Alternately applying a ruler to the lines diverging from the center, we make markings on the disk. This way the sections will be the same.
To divide the disk into blades, follow the marking lines with a soldering iron from the transparent part to the edge.
You can also use scissors for cutting, but there is a danger that the workpiece will crack during the process. If you don’t have a soldering iron, you need to use a knife preheated on the stove. When working with a soldering iron, deposited plastic is formed along the edges of the cut, which can be easily removed with a knife.
Cutting a disk with a soldering iron is the most effective method, in which the workpiece will not crack or deform, and the remnants of the deposited plastic can be easily removed with a knife
We heat the surface of the disk over the flame of a burning candle so that the blades can be slightly expanded. If you don't have a candle, a lighter or a soldering iron will do.
The central part of the disk should be heated, and all blades should be turned in the same direction. Place in the disc hole wine cork. To fix it better, you need to pre-treat the edges of the hole with hot glue.
The USB cable must be connected to the motor. If we don’t guess the direction of rotation of the propeller, we can swap the reins, that is, change the polarity.
The motor needs to be glued to a cardboard tube, and the tube itself to a second CD, which will act as the base of the stand.
When the plug is installed in the hole, the stand from the second CD and cardboard tube, as well as the connecting device are already assembled, it is very important to correctly fit the propeller onto the motor shaft
Now the propeller needs to be “planted” on the rod of the future fan. We will try to make sure that it is installed strictly in the center. You can secure it in this position using hot glue.
After all work is completed, the fan is ready for use.
Although the construction of this device will not take you much time, the result of the work performed will undoubtedly please you
How to make something similar, but a little more complex design Having included a regulator in the circuit, look at the video posted at the end of this article.
Do you find these homemade instructions complicated? Then you may be interested in information about and rules for choosing them in order to purchase a ready-made device offered by household appliance manufacturers.
Fan based on a plastic bottle
What our craftsmen don’t do from plastic bottles! The time has come to say that they also make a very good fan. It may not ventilate your entire room, but it will definitely help those who have to work at a computer.
We offer two options for creating such a fan model.
Option #1 – hard plastic model
To complete the work we will need:
- plastic bottle with a capacity of 1.5 liters;
- a motor from an old toy;
- small switch;
- Duracell battery;
- marker;
- scissors;
- candle;
- hammer and nail;
- Styrofoam;
- hot glue gun.
So, let's take the ordinary one plastic bottle 1.5 liters with plug. At the level of the label line, cut off its upper part. This is exactly what we need to make the propeller. We divide the surface of the plastic blank into six parts.
We try to mark it out so that we get equal sectors: the quality of operation of the future device depends on this.
We cut the workpiece along the markings almost to the neck. We bend the blades of the future propeller and cut off every second of them. We are left with a blank with three blades equidistant from each other. The edges of each blade must be rounded. We do this carefully.
To remove those parts of the blades that are closer to the neck of the workpiece, it is better to use a utility knife; do not forget to round the edges of the blades
Now we will need a small candle. Let's light it up. We heat each blade at the base on it to turn it in the direction we need. All blades must be turned in the same direction. Remove the lid from the workpiece and punch a hole in the very center using a nail and hammer.
We place the plug on the rod of a small motor. Such motors can remain from old children's toys. As a rule, getting them is not difficult. Secure the cork with glue.
Now you need to make a base on which the motor will rest. For this purpose, we take, for example, a piece of polystyrene foam. We attach a rectangle to it, which can also be cut out of foam packaging.
Our motor, to which the propeller is attached, will be fixed on the upper surface of this rectangle. To do this, you need to make a recess in the foam that corresponds to the parameters of the motor.
Hot melt adhesive is used to secure the elements of the product. If it is unavailable, other adhesives can be used. It is important that the fastening itself is as reliable as possible.
We made parts designed to enhance airflow. They will provide accelerated cooling of the space around.
Now you need to make the basis for fixing them:
Image gallery
After preparing the device designed to enhance the fan’s performance, we proceed to assembly and commissioning:
Image gallery
Stylish product without blades
We are accustomed to the fact that the main part of the fan is the propeller. This design part rotates, creating the necessary air flow.
But there are also. They have become fashionable, primarily due to their safety for younger family members and pets. In addition, these products look stylish: they can fit into any interior and decorate it.
The finished bladeless fan is completely different from the device we are used to seeing, however, it works great
Like most other things that serve a person, a bladeless fan can also be made with your own hands.
The principle of its operation is simple: at the base of the device there is a small turbine, which allows you to create air flows passing through the side openings.
For work we will need:
- computer cooler;
- power supply unit and connector;
- small switch;
- hot glue gun;
- cardboard or thick paper;
- scissors, pencil, ruler, compass and caliper.
In principle, we need a caliper solely in order not to make a mistake in the dimensions of the product. If it is not available, then you can get by with a regular ruler, tape measure or measuring tape.
Let's get to work.
First, let's make the body - the base of the product. To do this, cut out four rectangular pieces of cardboard. To determine the parameters of the base, measure the width of the cooler. The resulting size will match the width of the rectangles.
For convenience, we will operate with specific sizes. The width of our cooler is 120 mm. This means that the width of the rectangle is also 120 mm.
A small switch and power connector will be built into the body of our product. In order for them to stay tight enough in the future, you need to take measurements from them.
The holes in the housing must correspond to the obtained values. You need to make holes until the rectangles become part of the body: cutting them out in flat objects is always easier.
We need a twelve-volt power supply and a corresponding cooler that consumes only 0.25A. Taking into account the fact that we have a 2A unit, we can assume that we are quite well prepared for the further operation of the future device.
Now we take sheets of cardboard from which we have to cut out the elements of the main part of the fan. First, let's draw two circles. The radius of each of them is 15 cm. Cut out both circles.
In one of them, let's call it A, we will draw an inner circle with a radius of 11 cm. In the second, which we will call B, the radius of the inner circle will be 12 cm. Carefully cut out the inner circles. We received rings A and B.
The resulting rings will be attached to the body of the product. In order for them to better adhere to the surface of the body, we will apply one of the rectangular blanks to each of the rings and cut off a segment, the flat side of which corresponds to the width of the rectangle.
In order to reliably glue the rings to the base on which they will be installed, it is necessary to ensure the maximum contact area: for this purpose, a sector is cut off at the bottom of the product
The main part of the bladeless fan has cylindrical shape. To make it, we need strips of cardboard with the following parameters: first - 12x74cm, second - 12x82cm, third -15x86cm. During the assembly process it will become clear what to do with each of these three strips.
Before assembling the body, cut a notch in the bottom of each rectangle. This way we not only make legs for the future fan, but also create channels for incoming air.
Recesses in the lower part of the base can be made and rectangular shape, but it’s better to add an arc to the original rectangle by drawing it using a CD
We will assemble the body using hot melt glue. The cooler should be located approximately in the central part of the case, surrounded by four rectangles that form the walls of the structure. Lubricate the cooler around the perimeter with glue and surround it with walls.
Don't forget that the notches in the walls that we just cut should be at the bottom of the case.
The wires from the cooler can be tucked into a corner of the structure, securing them in this position with glue.
At this stage it is best to mount and connect. Since we are using a switch, we need to split one of the wires and form a circuit.
The wires should be connected to the power connector (red - positive, black - negative). If we get the polarity wrong, we just need to swap the wires. Using hot glue, we secure the connector and switch in the places intended for them.
We connect the power and check if the turbine is working. If everything is in order, we continue assembling our bladeless model.
We take ring A, which will be located in the front of the device, and the first strip (12x74cm). We close the strip into a circle and glue it into the inner circumference of ring A. The result is something like a cylinder hat without a top, but with a brim. The same must be done with ring B and the second strip (12x82cm).
This kind of hat came out of ring A and the first strip that we glued along the inner circumference of the ring
We glue the first “cylinder” to the front side of the body in the place where we cut off the segment. We also glue the second “cylinder” to the back side of the body with a cut surface. In this case, the smaller “cylinder” ends up inside the larger one.
The stability of the structure can be imparted using five strength partitions, fixed between the rings using the same glue. They need to be cut out of cardboard. The length of the partitions should be slightly less than 12cm.
Now lateral surface the main structure should be covered with the remaining third strip of cardboard (15x86cm).
This photo shows quite clearly internal structure fan, which will be hidden from us by the last (third) strip
In principle, the fan is ready. All that remains is to give it an external gloss. To do this, remove excess glue and cover its outer surfaces with paint or decorative paper.
You may also find the information provided in our other article useful.
So that you can see how correctly you understood and did everything, watch the video dedicated to self-creation bladeless fan, which we have placed at the end of this article.
If you are interested in assembling interesting and useful devices, then you may be interested in information about making an air conditioner at home, discussed in our other article
The green plastic fan that the video is dedicated to not only works well, but also looks great.
It will become a real desktop decoration for your workplace:
The peculiarity of the bladeless fan, which you can easily assemble following the instructions and video, is that the air flow appears as if from nowhere. The model attracts with its originality.
Spend some time on her decorative design, and you will see how flawlessly it will fit into your interior:
We have presented you with the best of homemade models fans. And they are the best because they do not require special mechanisms, complex instruments, expensive materials and special skills. Absolutely anyone can create them. House master, even a beginner.
We hope that the success that you will definitely achieve by making a fan will awaken your taste for independent creativity.
Do you use a homemade fan made from scrap materials? Or did you use one of the instructions given in our article when assembling the device? Perhaps you have improved the equipment you have in your home? Tell us about your experience - leave your comments.
Many suburban buildings need ventilation. Without it, houses and sheds become damp, cellars and basements get wet, and using a closet without a fan is, to put it mildly, uncomfortable.
Of course, equip the toilet or cellar with an electric supply or exhaust fan It’s not difficult, but many country houses are not always electrified. But the fan that I want to tell readers about does not require electricity - it is driven into rotation... by a rotary wind engine.
Anyone can make such a device. Its entire “mechanics” consists of a rotary wind engine and a 12-blade fan. Both are mounted on the axle of a bearing unit, which uses a bushing from the front wheel of a bicycle. The latter is secured with M4 bolts and nuts in the center of a circle cut from a sheet of plywood 8 mm thick.
The rotary wind turbine is assembled from a pair of half-cylinders and two disks made of 6 mm plywood. An old one will serve as a good blank for half-cylinders. aluminum pan or a bucket. A plastic container of appropriate size will also work. The pan is carefully cut along the diametrical plane and secured between a pair of plywood disks as shown in the pictures.
1 – wind fan; 2 – play closet; 3 – ventilation pipe; 4 – sump
1 – rotary wind turbine; 2 – nut securing the wind turbine to the shaft; 3 – bearing unit (hub from the front wheel of the bicycle); 4 – fan impeller (steel or duralumin sheet s2); 5 – self-tapping screw for fastening the wind fan on the ventilation pipe (12 pcs.); 6 – ventilation pipe (square box made from s20 boards); 7 – nut securing the fan impeller to the shaft; 8 – receiver (plastic basin); 9 – M5 bolts and nuts for fastening the bearing assembly on the receiver cover (3 sets); 10 – receiver cover (s8 plywood)
1,2- end washers (plywood, s8); 3, 4 – rotor semi-cylinders; 5 – corner for joining half-cylinders and washers (6 pcs.); 6 – fastening of half-cylinders and washers (M5 bolt with nuts, 12 sets)
Making a fan impeller
(A – blank, B – finished impeller)
Fan impeller – 12-blade; It can be made from a steel or duralumin sheet about 2 mm thick. After making a flat piece, each impeller blade is bent twice, as shown in the photograph, approximately 90 degrees, and the direction of bending will depend on what kind of fan you need - supply or exhaust.
The wind fan is installed on top of a kind of receiver, which is a small plastic basin, in the bottom of which a hole is cut for a ventilation pipe (asbestos-cement or knocked together from boards). In the upper part of the receiver (above the fan impeller), holes are cut for the outlet (or intake) of air.
The finished unit is fixed on top ventilation pipe- and it will continuously (and completely free!) ventilate your toilet or cellar.
I. KHOROSHEVSKY
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