Bladeless fans parsing. Fan without blades - climatic equipment for home and office. How does a fan without blades work?
In this tutorial we will make a bladeless fan using pvc tubing. Plastic container and fiberglass sheet.
For this project, special thanks to the guys from the DYI King channel on Youtube, who were inspired by the creation of a safe fan. But the best part about this bladeless fan is that, unlike most homemade fans, the project does not require 3D printing and the total cost can be less than $10.
Below in the video you can see the whole process of creating a fan.
Step 1. Tools and materials
The tools and materials needed for this project are very easy to assemble and are all pictured above. Essential for this project is a set of 6.5" and 3.5" PVC pipes, a plastic container or bowl, and a 3mm fiberglass sheet.
There is no need for a 3D printer as is used in most DIY fan projects. Moreover, we used miter saw to make the most of the cuts as it made the job more precise and easier when the same job can be done with hand saw and some patience, but then expensive tools will be needed to make a neat bladeless fan.
Step 2 Working principle
Contrary to the name of the device, which is a fan without blades, this thing actually has a fairly high-speed blade inside the main body. You can see the principle of operation of such a fan in the figure above.
In addition, the bladeless fan provides closed blade control, and then the air flow is directed through the closed channel body, following the structure of a conventional bladeless fan housing. This design offers an excellent level of protection for children.
Step 3. Making the main body
First you need to make the main body and for this you can use a PVC pipe. The main outlet is made of 6" diameter PVC pipe that is 4" wide to form the outer casing of the air outlet.
To form an air pocket inside the main air outlet, we use a conical shaped bowl that fits perfectly on a 6" PVC pipe and its collar sits on the edges of the pipe - see photo above. Cut off the bowl 1 inch above its bottom so that it forms a nice tapered collar inside the main exhaust casing which allows the air to rotate evenly inside the exit cavity before leaving it.
Step 4 Inner Casing and Base
The inner air outlet collar is made of 5" PVC pipe. This pipe forms a narrow opening nearly 0.5" wide to evenly distribute air from the cavity/air outlet. Three parts, namely the outer 6" PVC pipe, the conical inner case made of plastic bowl, and the inner collar made of 5" PVC pipe, together form the air outlet case.
To form the base, use 3.5" PVC pipe cut to a height of 5". To make the base fit perfectly with the air outlet body, cut one end of the base pipe in a bent shape (the bend is cut along pre-glued electrical tape), and mark the contour with a 6-inch PVC pipe. The pipe is then cut with a jigsaw and then sanded to fit perfectly on the outer 6" pipe without any gaps between them.
Step 5. Air intake hole
Before gluing the base to the main body, drill a 3″ hole in the 6″ PVC pipe, which will be the passage for air to enter the main body and then to the outlet. The hole is made with a hole saw.
The base is then glued to the outside of the air outlet with superglue. Since the base pipe is perfectly shaped to sit on a 6" PVC pipe, superglue makes a very strong bond between the two pieces.
Step 6. Air outlet ring
The air outlet ring is made of 3mm fiberglass sheet, which serves as the connection between the inner half and the outer half of the main air outlet. The ring is made using a jigsaw.
Step 7. Drawing
Since most of the parts of the bladeless fan case are ready, we need to paint them so that they look neat and flawless. Paint everything white using spray paint, except for the fiberglass ring, which is protected from paint with duct tape.
The end result is very good, and the blue fiberglass sheet looks fantastic against a flawless white background.
Step 8 LED Strip
To make the design more attractive and elegant, add a 12V LED strip on the inside of the air outlet at the end where the fiberglass sheet will be glued to the inner air outlet sleeve. The light strip is cut to the required length. The tape has a sticky side and is attached when the protective coating is removed from the back of the tape, and then sticks to the PVC body.
When the fan turns on, the LED strip illuminates the back of the air outlet and thus produces a very cool visual effect by spreading blue light.
Step 9. Gluing all the parts
Once the paint is dry, glue all the pieces together to form the main body of our bladeless fan, using super glue that seems to be holding everything together.
Step 10 Mounting the Fan
Behind every bladeless fan is a fan with blades. So to drive our fan, we need to use a 12V high speed fan direct current, which can be taken from an old computer. More specifically, in the lesson, a server fan, which is much more powerful than a regular PC fan. Therefore, we strongly recommend using this type of fan.
The fan is mounted inside the base directly below the air outlet housing with four wood screws to hold the fan securely in place. The fan is mounted in such a way that it blows air upwards, so we need the fan to be stable enough.
Step 11. Air intake
A pair of air intakes is made just below the server fan on both sides of the base tube, i.e. base pipes. These inlets allow air to be sucked into the base.
So that someone does not accidentally injure their fingers by inserting them into the base of the fan, we glue metal mesh on both holes. The mesh is first painted matte black and then glued inside the base with hot glue.
In this publication, we will consider a device that is called Dyson’s Air Multiplier and, despite the unusual appearance, this is a fan that has an obvious feature - it does not have the usual blades that, while rotating, create an air flow directly directed at the object. On the video review on it and a demonstration of the work. This is an invention of Dyson, which specializes in the design and assembly of vacuum cleaners. The employees of the company decided to create a bladeless fan, based on the principles on which their favorite brainchild, the vacuum cleaners mentioned above, function.
Despite the apparent sensationalism of this utility model, the inventors failed to completely abandon the blades. They remained in this device, but are hidden in the case, in general, as in a vacuum cleaner. In a beautiful ring there are slots properly directed, and at the base of the fan there are blades that blow air upwards.
The nice usefulness of this thing is not only in the futuristic design, but also in the safety of the design, in which there are no external rotating parts. For owners of apartments and other premises in which there are children, this is an important advantage. In addition, the air flow in a fan without blades is more uniform than in its standard counterpart. The disadvantage is a hum that resembles the noise of a working vacuum cleaner, a weaker flow than in a bladed counterpart and a high price. Figuratively speaking, the wind is 450 rubles, and the cost is several times higher.
The main drawback is the noise.
Discussion
And if you make a super coil in this ring, and a transformer below, then by dispersing the electrons by 4000 volts and creating a powerful twisting magnetic field, you can create the same effect. The electrons of the magnetic field will disperse the particles of air. And there will not be as much noise, if at all, it will be heard not under the stream.
This is called induction. Only it will be 15 times more expensive.
It buzzes, I think the efficiency is several times lower compared to normal fans, maintenance problems, dust and all that. useless thing. and as for security, it seems that all fans are protected from the grid. Is not it so?
Noisy. There is a 100% impeller like a vacuum cleaner, stupidly for pressure, so that the ring is pumped. Dyson, or whoever invented it, handsome, hid the valve in a separate case (he took the case from a vacuum cleaner) and simply added an original air duct to it. Everything, know-how is ready. They correctly wrote above, the goods for various stores “on the couch”. A cheap Chinese floor fan runs almost silently at speed 1 and drives through itself 50 times more air.
Useless thing. Well, will you wash this ring under the tap and inside that the dust will not be absorbed? A conventional fan equipped with a grid is also safe. This fan is quite loud. I don't see any advantages in it at all.
Damn ... 4500 ... 7500 rpm - this is tin, it will buzz like an airplane. But thanks for the video! And then some garbage is written in the descriptions in online stores, you won’t understand anything from them, but now at least I looked - I understood.
I'll buy it when they start making noiseless ones and at a normal price. 1500 rpm should be max. Better - 600. In principle, everything is clear: there must be a thicker column to fit a fan that provides the desired airflow at low speeds.
So, producers - work!
I've seen completely silent examples. When I came across a stream of air emanating from nowhere, I was very impressed. Imagine standing in front of an incomprehensible device that does not show any signs of active work, but at the same time generates a pleasant air flow. I was immediately enraptured. Returning home, I began to surf the Internet to understand what it was and how it works. I remember, then I immediately thought that Mr. Dyson, practical created in principle the new kind propeller, which is based on the principle of multiplication of the air flow. And that uniform air flow, without turbulence, is very handy for such modes of transport as Hoverbike, etc.
Alas, not an ideal fan, since it makes noise, an ideal fan should be absolutely silent. But this is a contradiction, cutting the air with blades creates a beneficial effect (air flow) and at the same time a harmful effect (noise), which means the blades must spin to create an air flow and should not spin so as not to create noise. This is a physical contradiction, who will resolve this contradiction , will create the perfect fan.
Well, washing it is just not easy, but on the contrary it is very difficult. The fan is hidden in the case, and it is not so easy to get to it in order to remove dust boots. There the dust will be even worse than in the system unit of the company. Yes, and show-off is everything. Efficiency drops when air has to be pushed through it all before it comes out. It will either be weaker than a regular fan or louder.
Try to sleep with a running food processor in the room. all the same, the fan is bladed, just the blades are hidden. Low-speed fans with large blades are more practical, quieter and no less safe.
A bladeless fan is a unique device that amazes the imagination with its design. Such a unit does not have blades or rotating elements visible to the eye. Therefore, it is completely incomprehensible to many how this device works and how it moves air masses. In fact, the principle of operation of such a fan is not so complicated. To do this, it is enough to study its design features.
The device works on the principle of forced ventilation, which was invented in ancient times. So the ancient Egyptians used the fan to create comfortable conditions for the pharaohs. At that time, they did not understand all the scientific subtleties of lowering the temperature when a gas flow flows around a body, but they successfully used this thermodynamic phenomenon. Today, bladeless novelties are based on the principle of operation of the turbine of modern jet aircraft.
Kinds
A bladeless fan can be of two types:
- Desktop.
- Floor.
The outdoor version is distinguished by large dimensions. In most cases, this is a fairly powerful fan. It is used to cool a large area. In many cases, such models of fans are equipped not only with a cooling function, but also with heating.
Desktop models stand out for their compactness. Thanks to this, they can be easily placed on the table. With the help of such a fan, you can create a fairly comfortable environment in the workplace on a hot day in the absence of air conditioning. In addition, desktop models have a very stylish and unusual design. They can have a left-right rotation function and remote control using a remote control.
A number of models are supplied with a device that is designed to humidify the air. Such types of devices have a special reservoir in the fan housing, where water is poured. There are also mini fans that you can take with you on the road. Such devices can be powered by a cigarette lighter and used instead of an air conditioner.
Device
The main elements of a fan without blades are the following parts:
- Ring diffuser.
- Engine.
- high speed turbine.
- Base.
The high-speed turbine, in which the engine is mounted, is installed at the base of the unit. Thanks to the operation of the turbine, the movement of air in the device begins. To reduce the level of emitted sound, the engine has a special Hemholtz chamber that captures and scatters noise. From this it seems that the fan is quite quiet.
A lot of holes are made in the base case for the purpose of air intake. On the upper part of the housing there is an aerodynamic ring, which is equipped with an annular diffuser. It has many holes through which air is blown out. The ring itself can be the most different shapes: rhombus, oval, circle, heart and so on. It all depends on the design ideas of the designer of the manufacturing plant.
Operating principle
The bladeless fan is powered by an electric motor. Air is sucked in by the turbine through small holes that are located at the bottom of the fan rack. Air masses after passing through the turbine exit through a small hole in the center of the ring and then spread along the contour. An air jet is created that flows around the ring from the inside of its rim. Air masses cover the rim and along the streamlined surface create negative pressure inside the ring of the device.
As a result, this leads to the fact that the air masses located next to the fan begin to be drawn into the center of the ring into the area of discharged pressure. As a result, a powerful stream is created at the output of the ring, which can have amplification up to 15-20 times. This aerodynamic effect makes it easy to move air masses and cool the room. The speed of the turbine unit can be controlled, so it is possible to set the desired air flow rate. At the same time, with the help of a fan without blades, a sufficiently dense and comfortable flow of refreshing air masses is created. The very operation of the device is unobtrusive and almost imperceptible.
Application
The scope of this fan is quite extensive - these are any municipal and public institutions, hospitals, sanatoriums, kindergartens, cottages, summer cottages, numerous offices, houses, apartments, and so on. The only exceptions are baths, saunas, bathrooms, swimming pools. Despite the absence of external rotating parts, it should only be used by adults and should not be left switched on alone with small children.
In addition to the soft distribution of air flows, the bladeless fan is able to humidify and even heat the air. However, this is only if the device has such functions. Such units in most cases are equipped with a control panel, where you can set the required temperature and percentage of humidity. The control range is determined by the specific model. The cheapest devices usually only have a cooling function. In expensive copies, there may even be a function to purify the air from harmful impurities, for example, from cigarette smoke.
How to choose a bladeless fan
Choosing a bladeless fan is not so easy. At the current time, the market for such equipment is replete with numerous models from various manufacturers: these are Dyson, Orion, SUPRA, Bladeless and many others.
- First of all, one should proceed from personal needs and financial capabilities.
- Before purchasing the device, you should familiarize yourself with its characteristics and find out the noise level. This is an extremely important parameter, because it will directly affect the comfort of use. The average noise range of such devices is 40-60 decibels and above.
- The radius of the ring affects the effectiveness of its use. For larger rooms, it is recommended to choose devices with a larger ring.
- Power determines not only the strength of the flow, but also the amount of electricity consumed and the level of noise emitted by the device. For an apartment or small house A medium power fan will suffice. However, for a large office, you should select a sufficiently powerful device. For such premises, it is recommended to select units that can drive about 250 cubic meters per hour.
- For everyday use, a ring rotation angle of 90 degrees is sufficient, but if desired, you can purchase a device with a rotation angle of up to 360 degrees.
- Pay attention to the quality of the plastic and the absence of unpleasant odors.
- If you value comfort, then it is recommended not to be stingy and purchase a model with a wide range of adjustment parameters. The presence of a control panel with a clear system of buttons will make use more convenient.
One of the novelties of the climate equipment market is a bladeless fan. The device simultaneously arouses interest and doubt among potential buyers. Unusual bladeless fan surprises appearance and functionality.
Someone decides to purchase it, and someone is worried that the money will be wasted. To dispel doubts about the performance of the equipment, you need to get to know its device, the principle of operation and the features of operation.
The model, which is radically different in its appearance from others familiar to many since childhood, was invented in 2009. Its creator is James Dyson.
For about 30 years he worked on options for improving the vacuum cleaner and other household and industrial equipment. This English developer came up with many interesting and useful inventions, the patents for which were sold in different countries peace.
Bladeless models allow you to rest easy, enjoying the coolness and not worrying that one of your pets or children will suffer if they fall into the fan blades
All his designs are different. exquisite design and improved functionality. Mr. Dyson, working on improving the hygienic hand dryer, took the principle of its work as a basis for his new invention. So, in 2009, a special fan appeared that did not have blades.
About 4 years the leading engineers of the company J. Dyson spent on simulating a fan ring that can most effectively pass air through itself, multiplying it many times.
Bladeless device from Dyson already in 2010 was sold in the homeland of the inventor for 199 British pounds. Such a price can hardly be called popular, but there were many who wanted to acquire an innovative fan.
Therefore, now on the market you can find similar equipment from various manufacturers, including budget Chinese models.
In the near future, users will be able to try a novelty - a ceiling version of a bladeless fan. This equipment is from Exhale Fans, designed by Nick Heiner.
The device and operation of a bladeless device
A fan without blades is often called the Dyson fan, or, as he himself called the device, the Air Multiplier after its creator. This original invention is in demand due to the ability to create a uniform air flow and fit perfectly into any interior.
The multiplier looks stylish, and the availability of analogues on the market makes it affordable for a wide range of consumers.
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However, the price of such novelties exceeds $300.
Depending on the model, the device itself will also differ. After all, the more functions it can perform, the more buttons will be on the control panel.
The fan without blades consists of the following parts:
- frame;
- control Panel;
- blower.
In the case there is an engine responsible for the operation of the device. Also on this part there are special holes through which air will be drawn in when the multiplier is turned on.
The appearance of the device for all manufacturers may differ significantly, as well as the size, functionality and cost.
The fan can be controlled mechanically or electronically using the panel. In most cases, remote control is provided. Many models from various manufacturers are equipped with a remote control that works, on average, at a distance of 3 meters.
The control panel provides:
- on/off button;
- rheostat for speed control;
- other buttons depending on the model of the multiplier and the functions provided by the manufacturer.
The blower has a round or oval shape. Its size depends entirely on the model of the product. This part of the fan can have a clear geometric shape or be in the shape of a heart, an apple, etc.
Air multipliers according to the installation method can be divided into 3 types:
- floor;
- desktop;
- wall.
The first 2 types are portable devices, and the last one is stationary. Often, manufacturers provide 2 options for one model: wall mounting and table mounting. In this case, the fan must be equipped with brackets with dowels.
When hanging the device on the wall, it is important to use the accessories offered by the manufacturer. Otherwise, you may void the warranty.
Dyson fan: principle of operation
Bladeless fans are capable of passing through themselves up to 500 liters of air in 1 second. The outlet stream is evenly distributed, gently enveloping the entire space. At visual inspection moving parts outside the operating device are not observed. This is what an air multiplier looks like at first glance.
The principle of such an efficient operation of a bladeless fan is the repeated multiplication of the drawn air at the outlet. This is due to the special shape of the blower and the presence of a hollow channel of a special shape inside it.
Among the manufacturers offering their bladeless equipment, the following companies can be noted: Flextron, SUPRA(Supra), UNISVET, Clever and Clean, Roward, Dyson, coolguy, Aaron, RENOVA, Orion, Bladeless, Bilux, MAGNIT.
The price range of bladeless devices of these companies is from 2,000 to 35,000 rubles or more.
An important characteristic that affects the level of comfort when using a fan is the noise level. It can be 40 dB, 55 dB, 60 dB or more. This is the most important parameter to consider before buying.
When the fan noise is 60 dB or more, a person will become tired after an hour of operation and may have a headache.
The noise level of a particular model is indicated by manufacturers in technical specifications. Moreover, this is the limiting level, which is achieved when the equipment is operating at top speed. For cheap devices, the declared noise level may not correspond to reality.
Pros and cons of bladeless fans
The air multiplier has its advantages and disadvantages identified by users.
Among the positive aspects can be noted:
- safety;
- uniform air flow;
- minimum electricity consumption;
- convenient management;
- ease of care;
- stylish design.
Safety is ensured by the absence of blades and other moving parts outside the product. Also, thanks to the motor located below, and the absence of vibration from the rotation of the blades, the whole structure turned out to be stable.
The special shape of the blower ring allows the fan to gently and evenly distribute air flows throughout the entire room.
Electricity consumption is most often 25 W and 40 W. Models with other characteristics are less common.
Control of the device is simple and clear. All the subtleties of adjusting the purchased model are described in detail in the instructions. The airflow power of the bladeless fan is also adjustable.
In addition to the advantages of a bladeless device, there are also disadvantages:
- noise effect– sound level from 40 dB. The larger and more powerful the device, the louder it will buzz at maximum speed.
- High price. The equipment loses in this indicator to the usual bladed fans.
- The fragility of the design. This shortcoming is typical for inexpensive analogues Chinese production.
Manufacturers strive to take into account all the shortcomings and wishes of customers, improving new variations of the fan. So, at first, consumers were offered various colors and sizes, then the most intricate shape. Later it was the turn to minimize the noise level produced by the device.
The next task was to reduce energy consumption and add additional functions for humidification and heating / cooling of air passing through a bladeless fan.
Aromatization and ionization of air flows so far exists only in expensive models of the latest generation
Do-it-yourself bladeless device
The question of creating a fan without blades with your own hands visited many craftsmen. During the experiments, home craftsmen obtained many working homemade products.
Option # 1: plastic bucket product
For the manufacture of the device used plastic container, a simple fan and a glue gun.
from simple and available materials in a couple of hours you can build a homemade fan without blades
For example, you can take:
- 2 plastic buckets with a volume of 5 and 10 liters;
- PVC pipe 110;
- distribution tee;
- plug.
First you need to cut a piece 15 cm long from the pipe. Then, in a 10-liter bucket, make a hole on the side of exactly the same size as the outer diameter of the pipe.
Using a glue gun, carefully and carefully connect these 2 parts together
The next step is to take a 5 liter bucket and cut off 3 cm from the top edge. We still have to cut a hole in the bottom, the diameter of which is 2 cm smaller than the bottom of the bucket itself. In the bottom of a larger bucket, you also need to make a hole of the same size and connect them together with a glue gun. This is a homemade blower.
Now we have to assemble a case with an engine, the role of which will be played by an axial fan. To do this, put a plug on the side branch pipe of the tee, applying a pre-adhesive layer there.
It is better to leave a small gap of 1.5-2 cm so that there is air access. Then you need pvc pipe put on one of the branch pipes of the tee and mark the border - this will be a segment of about 10 cm, which is to be cut off.
Place the cut piece into this pipe and make a through hole 5 cm long from the edge
It is here that an axial electric fan is to be placed. desired diameter, and in the hole - to bring out the wire for inclusion in the electrical network.
To give the finished homemade an aesthetic look, all parts can be painted in one color with spray enamel. For example, in white, beige or blue. The case is ready to be connected to the network.
It remains to place a homemade blower from 2 buckets on top and turn on the fan
If you put an ice container inside the case, then the homemade product will act as an air conditioner. And when placing a piece of cotton with 5-7 drops essential oil you can fill the whole room with a pleasant aroma.
Option #2: plastic pipe fan
The prototype of the second option was a bladeless device of the brand Dyson. The case and the technical part are assembled by a home craftsman according to the scheme of a finished product of factory production.
Let's start the construction of a useful homemade product from the body:
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It took three cuts to make. plastic pipe different diameters, 12 V fan, toggle switch with connection devices, capacitors, resistors, NE555 integrated circuit, Schnittke diode, diodes, power supply and Consumables
The largest ring is cut out of a 6″ pipe, its height is 10 cm. We cut the same piece from a 5″ pipe, it is blue in the photo. For the rack, we cut off 13 cm from the 3.5 ″ pipe. We also need to find a 6 ″ container, from which we cut out the bottom
We cut a narrow piece of pipe prepared for a rack under a large six-inch ring. To do this, first try on the details and outline the necessary lines
We cut a hole in the large ring with a diameter of about 2 cm smaller than the diameter of the rack
We place the hole in the large ring directly above the stand, glue it
We strengthen the connection with adhesive tape or glue it with mesh adhesive tape. When viewed from the side of the rack, an annular platform should form inside the structure
Glue a piece of fiberglass to the five-inch ring. The size of this part must cover the difference between the outer and inner ring.
We paint the inner ring with the glued part white from the spray gun. We glue the LED strip from the inside to the outer edge of the large ring and assemble the case
Step 1: Purchasing DIY Materials
Step 2: Cutting the blanks for the body
Step 3: Trimming the post to fit the ring
Step 4: Trimming the post to fit the ring
Step 5: Glue the post to the big ring
Step 6: Reinforce the connection with tape or masking tape
Step 7: Glue the 5" ring with fiberglass
Step 8: Installing the LED strip between the rings
The body is ready, now it should be equipped with technical stuffing:
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We put the fan in the rack, solder the wires to it, fix the device parts
More recently, rather strange devices began to appear on sale, having the functions of a conventional fan, but without the usual blades. A standard device of this type looks like a ring mounted on a special pedestal. At the same time, the air flow comes directly from the middle of such a ring, which seems fantastic and even magical. For many, such a fan is bewildering, while others consider its work to be simply supernatural or a swindle.
In fact, a fan without blades has a fairly simple device, although the principle of its operation is based on the latest developments in the field of aerodynamics and technology. The fact is that the ring installed on the pedestal is hollow inside, and a special hole is made along its inner perimeter. A fan without blades has a turbine inside the pedestal, which supplies air pressure inside the ring, and it exits through an opening that has such aerodynamics that its flow is directed in a certain direction, namely through the circle itself. Thus, a directed mass is created, which, in turn, captures air from the environment, creating a rather powerful flow. Therefore, such a device is often called pressure.
It is worth noting that the air flow obtained using such a device goes evenly, and not in portions, as when using a conventional fan, which increases its efficiency and significantly improves efficiency. Therefore, such a device is very good to use as a cooling fan. Its uniform flow will keep the required area under constant air pressure, which, with the same energy consumption, will be much more efficient.
Thanks to its design, the fan without blades allows you to give out 15 times more air than a conventional one. At the same time, his air pump works almost silently, which is also a very big advantage. Many models of such devices can heat the air, allowing the device to be used as a heater, and the absence of blades makes it safe for children.
However, the main advantage of such a fan is its uniform air flow, which can be compared to a light breeze, it allows you to feel like you are on the seashore. He does not bother with his constant noise, so using such a device is a pleasure. Also, the fan without blades does not collect dust. This has a positive effect on health and will make it possible for people with allergies to use it.
Thus, bladeless fans are latest devices for the organization of everyday life, which are not only very effective, but economical and safe. At the same time, the price for such air is almost as much as for an electric fan heater. This makes such a device accessible to almost everyone, and the remote control allows you to enjoy a gentle stream of air from anywhere in the room.
