"Eternal" mini-fan: is it possible to make it? How to Make Various Types of DIY Fans Homemade Ceiling Fan

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. Also, in order to make a 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 remains only to add a few additional tips - when cutting the blades, you need to ensure that each of them is approximately 45 degrees - eventually you will come out with about 8 pieces. 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.

The question is trivial. First we recommend to determine the installation location homemade fan. Two types of engines dominate in technology: collector (historically the first), asynchronous (invented by Nikola Tesla). The first ones are very noisy, switching sections causes a spark, the brushes rub, causing noise. An asynchronous motor with a squirrel-cage rotor is quieter, generates less interference. You can find the starter relay in the refrigerator. By adding a couple of phrases of humorous phrases, we will return the seriousness of the site. How to make a fan with your own hands, not to scare your family. Let's try to answer.

Aspects of designing a homemade fan

The device of the fan is so simple, it makes no sense to tell, paint the insides. What to consider when designing? Remember the growl cyclone vacuum cleaner, the volume is above 70 dB. Inside the commutator motor. More often deprived of the possibility of regulation of revolutions. Decide whether a similar sound pressure level is acceptable at the installation site of a home-made fan? Having chosen the second, we will concentrate on induction motors, simple models do not require a starting winding. The power is low, the secondary EMF is induced by the stator field.

Drum induction motor with a squirrel-cage rotor cut with copper wires along the generatrix, at an angle to the axis. The direction of the slope determines the direction of rotation of the motor rotor. Copper conductors are not isolated from the material of the drum, the conductivity of the Olympic metal exceeds the surrounding material (silumin), the potential difference between adjacent conductors is small. Current flows through copper. There is no contact between the stator and rotor, there is nowhere for the spark to come from (the wire is covered with varnish insulation).

The noise of an induction motor is determined by two factors:

  1. Alignment of the stator and rotor.
  2. Bearing quality.

By correctly setting up, maintaining an asynchronous motor, you can achieve almost complete noiselessness. We recommend that you consider whether the sound pressure level is important. The case concerns a duct fan - it is allowed to use a collector motor, the requirements will be set by the location of the section.

The duct fan is placed inside the duct section, mounted, breaking the path. For maintenance, the section is removed.

Noise is losing its dominance. The sound wave is attenuated as it passes through the duct. Particularly fast is the part of the spectrum that has inconsistent dimensions relative to the width/length of the tract section. Read more textbooks on acoustic lines. The commutator motor can be used in the basement, garage, devoid of people. The neighbors of the cooperative will hear, rather be too lazy to pay attention.

What is good about a collector engine, what are we fighting for the right to use. Three disadvantages of asynchronous:


At the initial moment, the induction motor does not develop a large torque, a number of special design measures are taken. The fan doesn't matter. Most household models are equipped with asynchronous motors. In production, the number of phases is increased to three.

Search fan motor

One YouTube video suggested using the engine direct current 3 volts from a hardware store. Tops the USB cord, works by rotating the blade of the laser disc. Useful invention? If you are tired of an extra port, the heat will help you survive. It's easier to take a processor cooler, power it from the system unit. Goes to 12 volts yellow wire(red at 5). The black pair is the earth. Collect from an old computer. Citizens of the Russian Federation are simply too lazy to invent, we throw curious equipment into a landfill.

Asynchronous fan motors operate without a starting capacitor ... The peculiarity of fan motors is: they go straight with the winding. A couple of tips to help get the engine:


Make a fan impeller

The question of what to make a fan from has not been resolved, the authors keep silent about the impeller. First things first, the fridge! The compressor is blown by an impeller. You will get the motor, remove it. Come in handy. Concerning washing machine, put the drum on the aircraft propeller. plastic tank fit to make a body. Heat the bending points with a building hair dryer.

Inspect the blender, supply an unnecessary laser disc, which has received the shape of an impeller. You can make a fan yourself using improvised materials. It does not require much power, there is no point in being too zealous, honing the details. We believe readers know how to make a fan with their own hands.

Eternal fan from the CPU cooler

We decided to please readers by telling how to make a fan. The review is far from the first, I had to dig around, looking for something worthwhile. Looks great idea to create eternal fan spinning forever. A mail.ru user posted a design that looks attractive. Let's take a closer look, thinking along the way how to make a fan that runs forever.

You know, of course, system units work quietly ( modern models). The slightest noise means: the cooler's axis has gone astray, or it's time to lubricate the aged fan. Working hours, days add up to weeks system unit will last for years. Made possible by smart technology. Think about it, the noise depends on the magnitude of the friction force. Mechanical energy becomes thermal, acoustic due to the presence of roughness. CPU coolers rotate easily, it's worth blowing.

The author of the video - we apologize for the lack of a name, we justify it: the video is in English - it offers to assemble an eternal fan from an accessory. The accuracy of fitting parts is great, the blade turns easily. Costs are reduced to a minimum. The author of the video posted by the deirones channel noticed: the processor fan is powered by direct current. He climbed inside, found four coils, equally spaced around the circumference, with their axes directed towards the center of the device.

There are no commutators inside, which means a paradoxical fact: the field of the coils is constant.

If the asynchronous motor of a typical fan is powered by 220 volts alternating voltage, which creates a rotating magnetic field, in our case the picture is constant. One could say: inside the rotor sets in motion a commutator that creates the desired distribution. Not true, is confirmed by the further course of thought of the author, the result of experience. Western innovator decides to replace the coil permanent magnet. Indeed, there is no alternating field - why electric current?

Defiantly, the author cuts off the power wire, arranges neodymium magnets ( hard drive) by the frame perimeter. Each on the continuation of the axis of the coil. The work is finished, the blades cheerfully began to rotate. We believe that a principle that is hushed up in orthodox literature is simply used. Trade secret of the patent owner.

The initial movement of the blade is obtained by random fluctuations in the air. It resembles a magnetron, the buildup of oscillations is caused by the natural chaotic movement of elementary particles. The question arose as to what determines the direction of rotation. The design is absolutely symmetrical. We decided to figure it out, we express our observations:

Agree, it is more convenient than to stir up USB ports, constantly wasting batteries. The perpetual fan works from an arbitrary position, it is devoid of wires. We believe that the strength of the magnets plays a decisive role. The simple rule stops working: more is better. The golden mean is slipping. When the blades spin from a random flow of air, overcoming a field of neodymium pieces. Weak magnets are surely powerless to keep a steady rotation. The field strength must be exactly as produced by the coils when subjected to a voltage of +5 or +12 volts.

Correctly create an eternal fan

We discussed how to make a fan, we will measure the direction, strength magnetic field coils. enjoy special devices. Magnetometer, teslameter, formed by magnetic induction converter, measuring module. When the fields interact, the resulting picture is obtained, which is called cohesion. The converter generates an EMF. The size determines the measured strength of the magnetic field. Like two fingers! It costs 10,000 rubles.

The magnets will be located at a considerable distance from the axis. The coils are much closer. You need to know how the picture changes with distance. According to Coulomb's law, the force falls inversely proportional to the square of the distance, which is true for single charges of an arbitrary sign. Separate magnetic poles in nature have not yet been found (it is not possible to create), the cube of distance is introduced into the law. Let's say the distance to the coil from the axis is 1 cm, the diagonal perimeter is 10. This means that neodymium should be 10 x 10 x 10 = 1000 times stronger than a small coil.

No one obliges to place neodymium magnets on the diagonals of the fan perimeter. The poles lie crosswise. Regulate the strength of the impact over a wide range. By placing neodymium magnets in the center of the sides of the fan frame, we significantly increase the field strength. Let's do the calculation. Let's say the hypotenuse of a triangle with a side of 10 cm is a diagonal. The distance to the center of the square will be 10 / √2 = 7 cm. You see, the ratio with 1000 drops, reaching 7 x 7 x 7 = 343. strong magnets neodymium to create an eternal fan.

Let's measure strength! A compass is suitable (there are custom designs assembled by one's own hands, for example, http://polyus.clan.su/index/indikatory_magnitnogo_polja_svoimi_rukami/0-52). One coil should be connected to the power supply. Then find the position, the raised arrow will deviate by about 45 degrees (if you don’t like it, take any other azimuth). Then start experimenting with neodymium. Position the piece different deletions, achieving the coincidence of the deflection of the arrow with the one obtained when using the processor fan coil. Surely the distance is not equal to the diagonal, half of the side, neodymium will have to be broken, cut.

Sawing one edge along the length, we carefully break the parts on the nail, getting the desired field strength to create an eternal fan. We assume that the induction is distributed in proportion to the volume. Today they told intelligibly how to make a fan with your own hands!

Source of power

Those who want to make a fan with their own hands see 3 problems: get the engine, power, make a propeller. The parts must fit together. Three problems are solved, you start making a fan with your own hands. Today at home, an abundance of switching power supplies. Think it started in the 90s. Gaming consoles, mobile phones, other equipment. The equipment breaks down, switching power supplies remain. The voltage is sometimes non-standard, most motors work on any voltage. The RPM will just fluctuate with the voltage. The broken house was lying around Appliances- immediately make a fan yourself.

Homemade fan power supplies

People are constantly trying to make a special fan with their own hands. One issue is more often left out of the discussion: the power supply. The device of the fan itself is so obvious that it makes no sense to dwell on it in more detail. So, it’s clear that there are an unthinkable amount of batteries today. Can they work for a long time? The answer is no. In extreme cases, take the "crown", in Soviet time considered a reliable source of energy. The power supply is bad, the power will gradually decrease, the speed will decrease, and the person will be annoyed. Stability without additional effort is important. A small 12 volt battery is missing - get ready: let's start looking for how to make a homemade fan power source.

The first thing that comes to mind is to screw up the computer. It is known miniature devices powered by USB port. Gadgets are recharged. The USB port is a source of inexhaustible energy. The voltage is low, you need a low voltage DC motor. We believe you can find at home, buy in a hardware store. How much will the power of the port: according to the old standards 2-3 watts. Another thing is to find a host device with an updated version of the interface (2014 was recognized as a rarity). The developers promised to give out 50 watts (even more, it's hard to believe). True, there will be more wires, nominal voltages will increase. We remind, according to tradition, power is supplied to the red (+), black (-) wires. White, green - signal.

It is clear that it is difficult to expect high power - even if the port supports it, the motor will not pull. It is recommended to look at the voltage more. The motor must be supplied with a higher voltage. For example, it is recommended to use a CPU cooler. The supply voltage is less than the prescribed 12 volts, the rotation speed will simply decrease. Beware of exceeding - the motor may burn out.

We are looking for energy, the issue is easier to solve than for 3 volts:

12 volt power supply for a do-it-yourself fan

We suggest not to collect impulse block supply, do-it-yourself routine. Recall that the first ones are distinguished by small transformers. Therefore, the power supply will be relatively large in size. It will consist of the following parts:

  • A step-down transformer. We will not name the number of turns in advance, the voltage is unknown, having straightened it with diodes, we get 12 volts. Of course, you can experiment, like a YouTube video about homemade radios, capturing the reader, let's look for a ready-made solution.
  • The full-wave bridge, adding three to one diode, we increase the efficiency. Radio components are not very expensive.
  • The backbone of the power supply is ready for a home-made fan to serve for a long time, we will straighten the network ripple. After the bridge, turn on the low-pass filter, redraw the circuit from the Internet.

The output is a constant voltage with an amplitude of 12 volts. Try not to mix up the terminals. Where the "plus" is, where the "minus" comes out can be understood by examining the diagram. Below is a drawing of the bridge, see, read the explanations. In radio electronics, the direction of the current is indicated opposite to the true one. Charges flow, according to beliefs, in the direction from plus to minus (towards electrons). Reading the circuit, you will see: for a diode, a transistor, the emitter marked with an arrow looks wrong. In the direction of positive charges. Each has marks, on the diagram it is indicated by a huge triangle arrow. Therefore, we always learn, "plus", guided by graphic designations shown in the drawing.

The figure shows: the plus will be on the right, it is transmitted according to the arrow of the diode to the lower output terminal. The minus will go up. With an alternating voltage (roughly speaking), plus, minus will alternate from left to right, the name of the rectifier will become clear - full-wave. Works on the positive part of the voltage and the negative. Diodes take power, low-frequency. Solid size, power dissipation is relatively large. You can calculate using a simple formula taken from a physics course. We multiply the resistance of an open p-n junction (leafing through the reference book) by the current consumed by the motor, taking the margin at least 2 times. The body of the motor contains an inscription indicating the power, can be divided by a voltage of 12 volts, simply multiply by 2 - 3, take a diode with equivalent dissipation power (see reference book).

Now let's calculate the transformer ... We went here http://radiolodka.ru/programmy/radiolyubitelskie/kalkulyatory-radiolyubitelya/, we chose the Trans50 program, we will master it. Note that among the software there is one that allows you to calculate the filter parameters. Do you regret that you were going to make a fan with your own hands? They offer to choose one of 5 windings. Steel is everywhere. You can do without, the losses will be great. Steel forms a magnetic circuit, energy goes to the secondary winding. It is better to find an old rusty transformer. The time is bad, in the hungry 90s, landfills are littered with plates of windings handed over for scrap. There were no problems with winding transformers.

It's time to understand how much voltage is required for the correct operation of the circuit. A term borrowed from electronics, the effective voltage will help alternating current. Voltage, on the active resistance, creating a thermal effect equal to the constant voltage of the effective amplitude. To obtain the required voltage value on the secondary winding, you need to divide 12 volts by 0.707 (one divided by the square root of 2). The authors received 17 volts. Engineering calculation sins with an error of 30%, let's take a small margin (part of the amplitude up to 1 volt will be lost on the diodes).

As for the secondary winding current (required for calculation), type something like “cooler power” in the search engine. Let's do it with the readers. Clever articles write: the current consumption of the cooler is indicated on the case. Will desired parameter, let's put it in the calculator. The voltage of the secondary winding, the author took 19 volts. The voltage drop across the p-n junctions of powerful silicon diodes is 0.5 - 0.7 volts. Therefore, an appropriate reserve is needed. Smart heads searched, concluded that the processor cooler does not consume more than 5 W, therefore, the current is 5 divided by 12 \u003d 0.417 A. We substitute the numbers for the downloaded calculator, for the tape core we get the design parameters of the transformer:

  1. Cross-sections of the magnetic circuit for winding 25 x 32 mm.
  2. The window in the magnetic core is 25 x 40 mm.
  3. The magnetic circuit is finished with a frame for winding wire 1 mm thick and with a cross section of 27 x 34 mm.
  4. The wire is wound along the larger side of the window, leaving a margin of 1 mm from the edges, a total of 38 mm.

The primary winding is formed by 1032 turns with a diameter of 0.43 mm. The approximate length of the wire is 142 meters, the total resistance is 17.15 ohms. Secondary winding consists of 105 turns of copper conductor with varnish insulation with a diameter of 0.6 mm (length 16.5 meters, resistance 1 ohm). Now readers understand: the question of what to make a fan is starting to be solved with a core ...

How effective are the proposed technical solutions? Fans are known ancient egypt. The clip of Michael Jackson, recommending "remember the time" (Remember the time) testifies. The plot was hardly prepared without the advice of archaeologists and historians. We want to report that in Mexico, most ladies use fans. The Spaniards know how to deal with the heat, the country lies on the equator. Think...

The weather is getting warmer outside, it's time to think about ventilation. In this episode, Roman Ursu will do 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. Take measurements and desired diameter let's make a hole. You will also need a 12 volt cooler power supply that consumes 0.25 m. A 2 amp unit, so that's enough. Top part The Dyson fan has a cylindrical shape. 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.

Repeat the same with the second ring and the 12 x 82 blank. To keep the fixed rings stable, use five small baffles of strength. The length is slightly 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.

Installing a fan is a delicate matter. Before you make a fan with your own hands, you need to determine its installation location. The fact is that in the manufacture of the structure today, two types of engines are used:

  • collector;
  • asynchronous.

The collectors make a lot of noise during operation; when it is switched, a spark occurs. In addition, the movement of the brushes also makes a lot of noise.

Asynchronous motors that are equipped with a squirrel-cage rotor - complete opposite. At self-manufacturing fans as a starting relay, you can use an element from the refrigerator.

Fan Manufacturing Principles

When making a fan with your own hands, you need to take into account some aspects, the most important of which is noise. To have an idea about the operation of the collector motor, you just need to remember how the Cyclone vacuum cleaner works, its volume is about 70 dB. Based on this, you should consider whether to use such an engine or not. In this regard, it is most realistic to use an asynchronous motor, moreover, when performing the simplest fan model, a starting winding is not required. Yes, and its power is small, and the secondary EMF is induced by the field from the stator.

The drum in an asynchronous motor has a squirrel-cage rotor with copper wires cut along the generatrix, passing at an angle with respect to the axis. It is this slope that determines the direction of rotation of the rotor in the engine. Copper strands are not insulated from the material of the drum, as they have a conductivity that is superior to the surrounding material, and the potential difference between adjacent strands is small. And in this regard, the flow of current flows through copper. The stator and rotor are not interconnected by contacts, and therefore there is no spark, since the wire is covered with varnish insulation. That is why the noise of an induction motor is determined by the following factors:

  • ratio of stator and rotor;
  • quality of bearing elements.

At correct setting asynchronous motor, you can achieve silent operation of the motor. Well, if we are talking about how to properly make a duct fan with your own hands, then you can allow the installation of a collector motor, but taking into account where the section will be located.

The duct fan is installed in the duct section itself and is placed in the center of the duct. For this reason, when a fan is made in an air duct, noise does not play a special role, since the sound wave decays while the channel passes.

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To make a fan with your own hands, you need to purchase a kitchen or bathroom fan model, the one that is mounted to the hood. The box from under it is also useful, and you will also need:

  • scissors;
  • net;
  • glue or tape.

Fan installation diagram.

The design will be powered by the network, but consuming little electricity. To begin with, a box is taken, and a through hole is made in it. Extractor fan design cylindrical shape, it will also be the basis for the shape of the hole.

Subsequently, a fan will be installed in this hole. The hole is cut out with a smaller diameter than the structure itself, in order to make it more stable and safe. From the side of the bottom of the box, an opening is made for the output of the cord. In order for the fan not to hang out in the box, you can put cardboard scraps in it, and fix it with electrical tape. For safety, a protective mesh is installed on the front part, where the blades are located. The denser the meshes in the grid, the less likely it is to fall under the blades. Making a homemade fan does not require high costs, and if you decorate the box, you can get additional element interior arrangement.

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USB fans: features

Such a model will not be easy to make. This is great option for individual cooling when working at a computer. Such a device is obtained with sufficient power, and also the energy consumption is not much greater. For the device of this design you will need:

  • a couple of CDs for a computer;
  • cord with USB plug;
  • wires;
  • an old motor, these are usually installed on children's toys;
  • wine cork;
  • cylindrical cardboard;
  • glue and scissors.

First of all, the disk is cut into blades. The power of the air flow depends on the presence of the blades, the more of them, the stronger it will blow, but the segments themselves should not be small.

Only one disk is cut, the second will be used as a stand.

To bend the blades, they are heated over a small flame and bent forward at an angle.

They must face the same direction. When the disk with blades is ready, a cork is inserted into its center, and a hole is made in it.

In order to make the wire usable, the outer winding is removed from one end of the USB cable, under which there are 4 wires. Steam rooms can be separated, connected to the motor and insulated.

Creating an airflow with high density possible in several ways. One of the effective ones is a radial fan or "snail". It differs from others not only in form, but also in the principle of operation.

The device and design of the fan

For the movement of air, sometimes the impeller and the power unit are not enough. Where space is limited, use special kind extraction equipment designs. It attaches a spiral body that performs the function of an air channel. You can make it yourself or buy it already finished model.

For flow formation, a radial impeller is provided in the design. It is connected to the power unit. The blades of the wheel have a curved shape and create a discharged area when moving. It receives air (or gas) from the inlet pipe. When advancing along the spiral body, the speed at the outlet increases.

Depending on the application centrifugal fan snail can be general purpose, heat resistant or corrosion protected. It is also necessary to take into account the magnitude of the generated air flow:

  • low pressure. Application area - production shops, Appliances. The air temperature should not exceed +80°С. Mandatory absence of aggressive environments;
  • average pressure value. It is part of the extraction equipment for removing or transporting small fraction materials, grain sawdust;
  • high pressure. Forms an air flow into the fuel combustion zone. It is installed in boilers of many types.

The direction of movement of the blades is determined by the design, and, in particular, the location of the outlet pipe. If it is located on the left side, the rotor should spin clockwise. The number of blades and their curvature are also taken into account.

For powerful models it is necessary to make a reliable base with fixation of the case with your own hands. The industrial installation will vibrate strongly, which may lead to its gradual destruction.

Self-manufacturing

First of all, you should decide on functional purpose centrifugal fan. If it is necessary to ventilate a certain part of the room or equipment, the case can be made from improvised materials. To complete the boiler, you will need to use heat-resistant steel or make it from stainless steel sheets with your own hands.

First, the power is calculated and a set of components is determined. The best option there will be a dismantling of the snail from the old equipment - a hood or a vacuum cleaner. The advantage of this manufacturing method is the exact match between the power of the power unit and the parameters of the hull. A snail fan is easily made by hand only for some applied purposes in a small home workshop. In other cases, it is recommended to purchase a ready-made model industrial type or take the old one from the car.

The procedure for making a centrifugal fan with your own hands.

  1. Calculation overall dimensions. If the device will be mounted in a limited space, special damper pads are provided to compensate for vibration.
  2. Case manufacturing. In the absence already finished construction you can use sheets of plastic, steel or plywood. In the latter case, special attention is paid to sealing the joints.
  3. Scheme of installation of the power unit. It rotates the blades, so you should choose the type of drive. For small structures, a shaft is used that connects the motor gearbox to the rotor. In powerful installations, a belt-type drive is used.
  4. Fasteners. If the fan is installed on an external case, for example, a boiler, mounting U-shaped plates are made. With significant capacities, it will be necessary to make a reliable and massive base.

This is general scheme, according to which you can make an exhaust functional centrifugal unit with your own hands. It may change depending on the availability of accessories. It is important to comply with the requirements for sealing the housing, as well as to ensure reliable protection power unit from possible clogging with dust and debris.

During operation, the fan will make a lot of noise. It will be problematic to reduce this, since the vibration of the case 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. The tree can partially reduce the sound background, 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:

Overview 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, let's consider an example of serial models in a molded case.








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