Do-it-yourself high pressure fan blades. Quiet fan. How to make a plastic bottle fan

The weather is getting warmer outside, it's time to think about ventilation. In this issue, Roman Ursu will be making a bladeless fan. You can easily repeat this product with your own hands. Four pieces of cardboard are used in the product. The width must match the width of the cooler. 120 mm. A switch and a power connector are built into the housing. We will measure and make a hole according to the desired diameter. You will also need a 12 volt cooler power supply that consumes 0.25 m. A 2 amp unit, so that's enough. The top of the Dyson fan is cylindrical. This means that we draw two circles with a diameter of 15 cm. In one of them 11 cm, in the other 12 cm. To keep the parts well on the base, we take one of the walls, apply the parts, draw a line and cut it off. Now, in order to form the cylinders, you will need three segments with the following dimensions: 12 x 74, 12 x 82, 15 x 86 cm. We will figure out what and where to glue at the assembly stage. Let's make cuts in each wall. These will be the air channels. They look like good legs.

Let's start assembling a bladeless beautiful fan by placing the courier in the middle. Glue each wall one by one. The wires can be removed as shown in the video. It would be nice to figure out the connection. We use the switch, so we separate one of the wires and form a circuit. The wires go to the power connector, black to minus, red to plus.

It is necessary to connect all the previously prepared parts with your own hands. We take a ring with an inner diameter of 11 cm. It will be in front. And a segment 12 × 74. We connect, as in the video.

We repeat the same with the second ring and the 12 x 82 blank. To keep the fixed rings stable, we use five small baffles of strength. The length is a little less than 12 cm. It remains only to close the structure.

We use the last segment 15 x 86 cm.

In conclusion, we bring beauty, remove excess glue, cover with paint. In general, the bladeless fan is ready.

There's a lot ahead useful homemade, we are waiting for the warm sun to shoot the next video and show it on the channel.

Many suburban buildings need ventilation. Without it, houses and sheds become damp, cellars and basements get wet, and even using a backlash closet, in which there is no 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 summer cottages are far from always electrified. But the fan, which I want to tell readers about, does not need electricity - it is driven by ... a rotary wind turbine.

Anyone can make such a device. All its "mechanics" consists of a rotary wind turbine and a 12-bladed fan. Both are mounted on the axis of the bearing assembly, which is used as a bushing from the front wheel of the bicycle. The latter, with the help of M4 bolts and nuts, is fixed in the center of a circle cut out of a plywood sheet 8 mm thick.

The rotary wind turbine is assembled from a pair of half-cylinders and two discs made of 6 mm plywood. A good blank for half-cylinders is the old aluminum pan or a bucket. A plastic bowl of the same size will also work. The pan is carefully cut along the diametrical plane and fixed between a pair of plywood disks as shown in the figures.

1 - wind fan; 2 - backlash closet; 3 - ventilation pipe; 4 - cesspool

1 - rotary wind turbine; 2 - nut for fastening the wind turbine on the shaft; 3 - bearing assembly (sleeve 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 (box square section, knocked together from boards s20); 7 - nut for fastening the fan impeller on the shaft; 8 - receiver (plastic basin); 9 - bolts and nuts M5 for fastening the bearing assembly on the receiver cover (3 sets); 10 – receiver cover (plywood s8)

1,2- end washers (plywood, s8); 3, 4 – half-cylinders of the rotor; 5 - corner for joining half-cylinders and washers (6 pcs.); 6 - fasteners for semi-cylinders and washers (M5 bolt with nuts, 12 sets)

Fan impeller manufacturing

(A - blank, B - finished impeller)

Fan impeller - 12-blade; it can be made from a steel or duralumin sheet with a thickness of about 2 mm. After making a flat billet, each impeller blade is bent twice, as shown in the photo, approximately 90 degrees, and the direction of the bend will depend on which 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 hammered 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 of the ventilation pipe - and it will continuously (and completely free!) Ventilate your toilet or cellar.

I. KHOROSHEVSKY

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Throughout the long winter, we look forward to pleasant summer days, and with the onset of a hot season, for some reason, we begin to dream of coolness. How deliciously the light breeze created by a small homemade fan will help restore strength and relieve fatigue. Plus, making it is incredibly fun, right?

We invite you to familiarize yourself with step by step instructions for the assembly of simple effective devices from literally junk raw materials. The article presented to your attention details how to make a fan with your own hands and what a home master will need for this.

At your disposal is a detailed description of the manufacture of options, the effect of which has been tested in practice. You can make such devices with your own hands, 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 CDs. It can be used, for example, for local impact on a user who spends a long time at the computer.

Let's prepare source materials to get the job done:

CD discs - 2 pcs.;
low power motor;
cork from a wine bottle;
wire with USB plug;
a tube or rectangle made of thick cardboard;
soldering iron;
candle or lighter, hot glue;
pencil, ruler, checkered paper.

For our purposes, you can use a motor from an old toy, for example, from a typewriter. As a cardboard tube, a sleeve from a roll of toilet paper slightly ennobled with decorative finishing paper is suitable.

The main advantage of this model is that almost any do-it-yourself lover can find all the materials that are necessary for its manufacture.

The process of assembling a mini fan is quite simple.

Let's take one of the CD disks and use a marker to divide its surface into eight identical sections. The easiest way to do this is to use a piece of squared paper.

Let's draw a cross on it from a horizontal and vertical line. Each of the four resulting right angles is divided in half. Using cells, this is quite easy to do.

Using a very simple method using a checkered leaflet, we can achieve a perfect layout of the disk into eight equal sectors.

We impose a disk on our drawing so that the intersecting lines are in the very center of its hole. Alternately applying the ruler to the lines diverging from the center, we make markings on the disk. So the sections will be the same.

To divide the disk into blades, you should draw a soldering iron along the marking lines from the transparent part to the edge.

Scissors can also be used for cutting, but there is a danger that the workpiece will crack during operation. If there is no soldering iron, you need to use a knife preheated on the stove. When working with a soldering iron, welded plastic is formed along the edges of the cut, which is easily removed with a knife.

Cutting the disk with a soldering iron is the most effective method, at 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 there is no candle, a lighter or blow dryer will do.

The central part of the disk should be heated, and all the blades should be turned in the same direction. Placed in the opening of the disk wine cork. To better fix it, you need to pre-treat the edges of the hole with hot glue.

The USB cable must be connected to the motor. If we do not guess with the direction of rotation of the propeller, it will be possible to swap the occasions, that is, change the polarity.

The motor must be glued to the cardboard tube, and the tube itself to the second CD, which will act as the base of the stand.

When the plug is installed in the hole, the support of the second CD and cardboard tube, as well as the connecting device are already assembled, it is very important to correctly fit the propeller on the motor shaft

Now the propeller needs to be “landed” on the stem of the future fan. We will try to make sure that it is installed strictly in the center. You can fix it in this position with hot glue.

After completion of all work, the fan is ready for use.

Although the construction of this device will not take you much time, but the result of the work done will undoubtedly please you.

How to do the same, but a little more complex structure, including a regulator in the circuit, look at the video posted at the end of this article.

Do you find this homemade instructions complicated? Then you may be interested in information about and the rules for choosing them in order to purchase a ready-made appliance offered by manufacturers of household appliances.

Plastic bottle fan

What our craftsmen do from plastic bottles! It is time to say that the fan from them also turns out to be very good. It may not ventilate your entire room, but it will definitely help someone who is forced to work at a computer.

We offer two options for creating such a fan model.

Option #1 - hard plastic model

To do the job, we need:

plastic bottle with a capacity of 1.5 liters;
motor from an old toy;
small switch;
Duracell battery;
marker;
scissors;
candle;
hammer and nail;
Styrofoam;
hot glue gun.

So, we take an ordinary plastic bottle of 1.5 liters with a cork. At the level of the label line, cut it off upper part. It is she who we will need to make the propeller. We divide the surface of the plastic blank into six parts.

We try to mark it so that we get equal sectors: the quality of the future device depends on this.

We cut the workpiece according to the markup 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 of the blades must be rounded. We do it 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. We light it up. We heat each blade on it at the base in order to turn it in the direction we need. All blades must be turned in the same direction. We remove the cover from the workpiece and in its very center we punch a hole with a nail and a hammer.

We put the cork on the rod of a small motor. Such motors can remain from old children's toys. As a rule, getting them is not difficult. We fix the cork with glue.

Now you need to make a base on which the motor will hold. For this purpose, we take, for example, a piece of foam. We fix a rectangle on it, which can also be cut out of the foam packaging.

On the upper surface of this rectangle, our motor will be fixed, to which the propeller is attached. To do this, in the foam, you need to make a recess corresponding to the parameters of the motor.

Hot glue is used to fix the elements of the product. In its absence, other adhesives can be used. It is important that the mount itself is as reliable as possible.

We have made parts designed to enhance the 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 performance of the fan, we proceed to the assembly and commissioning:

Image Gallery

Stylish product without blades

We are used to the fact that the main part of the fan is the propeller. This part of the structure rotates, creating the necessary air flow.

But there are also. They have firmly become fashionable, first of all, due to their safety for younger family members and for pets. In addition, these products look stylish: they are able to fit into any interior and decorate it.

The finished bladeless fan is not at all like the device that we are used to seeing, however, it works great.

Like most other things that are in the service of a person, a bladeless fan can also be made by hand.

The principle of its operation is simple: a small turbine is located at the base of the device, which allows you to create air flows passing through the side holes.

For work we need:

computer cooler;
block and power 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 be mistaken in the size of the product. If it is not available, then it is quite possible to get by with an ordinary ruler, tape measure or centimeter tape.

Let's get to work.

To begin with, we will 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, we measure the width of the cooler. The resulting size will match the width of the rectangles.

For convenience, we will operate with specific dimensions. The width of our cooler is 120 mm. And this means that the width of the rectangle is also 120 mm.

A small switch and a power connector will be built into the body of our product. In order for them to keep tight enough in the future, you need to remove the sizes from them.

The holes in the housing must correspond to the values obtained. You need to make holes before the moment when the rectangles become part of the case: it is always easier to cut them in flat objects.

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, 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. Got rings A and B.

The resulting rings will be attached to the body of the product. In order for them to better adjoin the surface of the case, we will attach one of the rectangular blanks to each of the rings and cut off a segment, flat side which corresponds to the width of the rectangle.

In order to be able 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, the sector is cut off at the bottom of the product

Main part bladeless fan has a cylindrical shape. To make it, we need strips of cardboard with the following parameters: the first - 12x74cm, the second - 12x82cm, the third -15x86cm. During the assembly process, it will become clear what to do with each of these three strips.

Before assembling the case, we cut out a notch at the bottom of each of the rectangles. So we not only make legs for the future fan, but also create channels for incoming air.

Notches at the bottom of the base can be made and rectangular shape, but it is better to add an arc to the original rectangle by drawing it with a CD

We will assemble the body using hot 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.

Do not forget that the notches in the walls that we just cut out should be at the bottom of the case.

The wires from the cooler can be removed to the corner of the structure, fixing 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 separate one of the wires and form a circuit.

The wires should be connected to the power connector (red - plus, black - minus). If we make a mistake in polarity, we just need to swap the wires. Using hot glue, we fix the connector and the 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 to assemble our bladeless model.

We take ring A, which will be located in front of the device, and the first strip (12x74cm). We close the strip into a circle and paste it into the inner circumference of ring A. It turned out to be a kind of cylinder hat without a top, but with fields. The same must be done with ring B and the second strip (12x82cm).

Here is a semblance of a hat turned out from ring A and the first strip, which we pasted along the inner circumference of the ring

We glue the first "cylinder" to the front side of the case in the place where we cut off the segment. The second "cylinder" is also glued to the back side of the case with a cut surface. In this case, the smaller "cylinder" is inside the larger one.

Structural stability can be given with the help of 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 side surface the main structure should be closed with the remaining third strip of cardboard (15x86cm).

This photo clearly shows the internal design of the fan, which will be hidden from us by the last (third) strip

In principle, the fan is ready. It remains to give it an external gloss. To do this, remove excess glue and cover with paint or paste over with decorative paper its outer surfaces.

You may also find it useful information about, set out in our other article.

To make sure you understand and do everything correctly, watch the video on creating a bladeless fan on your own, which we posted at the end of this article.

If you are fond of assembling interesting and useful appliances, then you may be interested in information on 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 of your workplace:

A feature of the bladeless fan, which you can easily assemble by following the instructions and video, is that the airflow appears as if from nowhere. The model attracts with its originality.

Spend some time on it decoration, and you will see how flawlessly it will fit into your interior:

We bring you the best of homemade models fans. And they are the best because their construction does not require special mechanisms, complex tools, expensive materials and special skills. 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 improvised materials? Or did you use one of the instructions given in our article when assembling the device? Perhaps you have improved the equipment available in the house? Tell us about your experience - leave your comments.

You are sitting at the computer, summer is outside, there is no air conditioning. The hand is already tired of endlessly fanning itself with a newspaper, and sweat drips from the forehead onto the keyboard. Common situation? If there is no extra money, help homemade fan. To make it, you do not need to run to the store for details. Everything you need for a blower is in the house. Don't know how to make a free fan at home? Follow the text!

What is an air cooler made of?

engine
fan blades
stand
power supply

The last point can be omitted if you do USB fan with your own hands. The computer has a voltage of 5 volts. You will need a printer cable, an old "mouse", or any unnecessary device with a USB cable.

If you are a fan of homemade products, there is probably useful trash in the house. Otherwise, you do not need to know how to make a fan with your own hands.

Did you find an electric motor in the box with unnecessary parts? You can make a fan out of a motor from an old drive or a broken toy. Consider a few examples of how to make a mini fan from improvised materials.

Glue, cardboard, toy motor

To make a small propeller, you will need a piece of corrugated cardboard 30 × 30 cm.

We glue the support in 2-3 layers, the area is not less than two palms. We make a rack for the engine in the form of a prism 10–15 cm high. For cutting, we will use a clerical knife. We bend the design along the line.

How to make a mini fan durable and stable? Let's use glue gun. No other adhesive will make the connection as secure.

We connect with hot glue, and as thick as possible: the design should turn out to be monolithic. The blades can be made from thinner cardboard. Suitable packaging from an accessory for a mobile phone.

This is the most critical element: the blades must be exactly the same in shape and weight. Otherwise, your propeller will vibrate during operation, and quickly fall apart.

We glue the blades (carefully) on a cardboard sleeve, observing aerodynamics. The planes should be turned 30–45 degrees in opposite directions. For simplicity of design, we assemble a USB fan with two blades. They are easier to balance, and such a propeller will cope with cooling no worse than a three-blade one.

Trial run and balancing

We make a hole in the very center of the bushing (using an awl), put it on the motor axis, and carry out a test run. Of course, before assembly, it is necessary to coordinate the angle of attack of the blades with the direction of rotation of the motor. Otherwise, the fan will blow reverse side. If vibration is present, the propeller can be easily balanced by simply crawling the blades. After making sure that the propeller spins smoothly and blows where it is required, we glue the motor onto the stand. Clay do not feel sorry!

We connect the USB cable to the power wires of the engine. Of course, it is better to do this with a soldering iron, but given the meager power, you can get by with a simple twist. The main thing is not to forget to insulate the connection with electrical tape or tape.

How to determine the power contacts of a USB wire

Any USB connector consists of 4 pins. We are not interested in the middle ones, these are information wires. The 5 volt supply is at the extreme contacts. Desoldering in the illustration:

If you reverse the polarity, nothing bad will happen. The motor will just spin in the wrong direction. How to determine the motor supply voltage? There is no need to look for markings. If the toy (where it was installed) is powered by three batteries (1.5 volts each), then the motor is 5 volts. If it is powered by two batteries, it will not work for USB power.

CD

You don't know how to make an efficient CD fan? It's easier than it looks. We mark the disk into 8 sectors. An even number of blades is easier to balance if axial runout occurs.

Cut out the blades with regular scissors. You can do this work with a construction knife, or melt the sectors with a soldering iron - there is not much difference. If you inadvertently break a CD, get a new one.

The extra segments are broken out, the rest are given the aerodynamic shape of the propeller. To do this, it is enough to heat the workpiece over a candle or with the help of building hair dryer. If you make a mistake with the geometry, you can always correct the situation by reheating. This is the advantage of crafts made from a CD.

Glue a thickening in the center of the structure: any piece of plastic 5-10 mm. We drill a hole in it for landing on the motor shaft.

Where to get an electric motor

In this design, a drive from a disk drive is used. Power supply 5 volts, moderate speed. Most likely, you do not have a separate disk drive gathering dust on the shelf, it can be found in system unit. No one uses floppy disks anyway, you can safely disassemble it for spare parts.

Convenient flat motor housing allows you to assemble the fan on a flexible leg. To do this, we twist a piece of single-core copper wire into a pigtail, and wind it to the power cable with electrical tape.

A motor with a propeller is glued to a flexible stand either with hot glue or wrapped with the same electrical tape. Unless you're going to enter a fan design contest, you don't have to worry about aesthetics.

After spending 2-3 hours, you get a convenient portable "device" that can be installed anywhere without leaving your computer.

Aesthetics from a plastic bottle

If you want not only fresh air, and to make the product pleasing to the eye - we use other materials. The basic components remain the same: a motor from a child's toy and an old USB cable. By the way, you can connect such a fan to a 220 volt outlet using Charger for smartphone (with that de usb port).

The highlight of the design is the body. The propeller is made from plastic bottle. The twisted plug will serve as an axial sleeve. The rack can be made from a bunch of straws for a cocktail.

We assemble an elegant base from the second PET bottle and a CD glued from below. With free accessories, you can install a connector and a switch.

Despite the “lightness” of the design, the fan turned out to be quite stable. If necessary, you can put some weight in the case.

Using Factory Parts

We return to the presence in the home workshop of conditionally unnecessary components for the computer. For example, a cooler from a power supply or a system unit.

The electrical part of the work is reduced to a minimum. If the power supply is 5 volts, we work according to the scheme: USB cable. To supply 12 volts, you will have to look for a power supply, or a phone charger. In addition, there are "turbines" that are connected to a 220 volt network.

Actually, to make a fan out of a cooler from a computer, it is enough to fix it on some kind of stand. And if you use batteries instead of a USB cable, you can organize a flow of fresh air anywhere.