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Advanced Air Multipliers are Gaining Huge Popularity in the Market household appliances. Devices without blades are easy to use, high efficiency and efficiency. A modern device causes a lot of controversy among potential buyers with its design and functionality.
Fan without blades
The original device is gradually gaining momentum among users who are already convinced that the unit works effectively.
Fan without blades: operating principle
Based on the appearance of the device, it is not immediately possible to understand its purpose. Enough simple design Effectively transmits powerful air flow. The movement of air is carried out through the air intake, with subsequent exit from the opposite side to high speeds. An aerodynamic device is designed to create low pressure in order to roll out air flows at the inlet. The built-in turbine is used to quickly change air masses, so the equipment is more efficient than a conventional fan.
Operating principle of a fan without blades
This type of device passes approximately 500 liters of air per second, and the supply is evenly distributed throughout the room. The creation of models was based on the operating principle of aircraft jet engines.
Healthy! Modern units do not take up much space in the room, but at the same time efficiently blow the room with a uniform air supply. They are easy to use; just read the instructions to fully understand the operating principle of the device.
Design
With the help of innovative technologies, the device is produced with various functionality. Design different models may vary slightly, but all copies consist of the following parts:
On the body there is a motor responsible for full-time job apparatus. The process of drawing in air is carried out through holes located on the base of the device.
The unit is controlled mechanically or electronically. Most models operate via remote control.
The control panel is equipped with the following functions:
- On/off key;
- Rheostat - provided for speed control;
- There are additional options depending on the functionality of the device and the manufacturer.
The blowing base is made in a round, oval or any other geometric shape. This part is produced in different sizes, depending on the model of the device.
Areas of application
- Climate control equipment is in demand due to its safety and low energy consumption. It can be used even in places where there are small children, without fear that they may get hurt;
- The air multiplier operates using innovative technologies that allow you to create maximum comfort and the required climatic conditions;
- Effective supply of air masses occurs evenly throughout the room, they reach even remote corners;
- Considering the type of device, you can choose the most best option. Compact devices can be installed even in cars; they completely replace air conditioning;
- Such devices operate with mechanical or electronic control. Units with a remote control are much more expensive than their mechanical counterparts, but you don’t need to get up from your seat to switch modes;
- Almost all units, regardless of manufacturer, operate at high noise levels, which can sometimes cause discomfort. However, the rapid cooling of the apartment smooths out this disadvantage;
- Stylish devices easily cope with the tasks, while creating a soft flow of air masses. Compared to conventional fans, they do not dry out the skin.
Watch a video about the operating principle and advantages of a bladeless fan
One of the new products on 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.
Some people decide to purchase it, while others worry that the money will be wasted. To dispel doubts about the performance of the equipment, you need to take a closer look at its structure, operating principle and operating features.
The model, radically different in appearance from others familiar to many since childhood, was invented in 2009. Its creator is James Dyson.
He worked for about 30 years 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 to different countries peace.
Bladeless models allow you to relax peacefully, enjoying the coolness and without worrying that one of your pets or children will get hurt if they get caught in the fan blades
All of his developments are distinguished by exquisite design and improved functionality. Mr. Dyson, working to improve the hygienic hand dryer, took the principle of its operation as a basis for his new invention. So, in 2009, a special fan appeared that did not have blades.
J. Dyson's leading engineers spent about 4 years simulating a fan ring that could most effectively pass air through itself, multiplying it many times over.
Already in 2010, a bladeless device from Dyson was sold in the inventor’s homeland for 199 British pounds. This 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 new product - ceiling option bladeless fan. This is Exhale Fans equipment designed by Nick Heiner
Design and operation of a bladeless device
A fan without blades is often called a Dyson fan in honor of its creator or, as he himself called the device, an Air Multiplier. This original invention is in demand due to its ability to create a uniform air flow and fit perfectly into any interior.
The multiplier looks stylish, and the presence of analogues on the market makes it accessible to a wide range of consumers.
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However, the price of such new products exceeds $300.
Depending on the model, the device itself will differ. After all, the more functions it can perform, the more buttons there will be on the control panel.
A fan without blades consists of the following parts:
- frame;
- control Panel;
- blower
The housing contains a motor that is responsible for the operation of the device. There are also special holes on this part through which air will be drawn in when the multiplier is turned on.
The appearance of the device from all manufacturers may differ significantly, as well as size, functionality and cost.
The fan can be controlled mechanically or electronically using a panel. In most cases, remote control is provided. Many models from various manufacturers are equipped with a remote control that operates, on average, at a distance of 3 meters.
The control panel provides:
- on/off button;
- rheostat for adjusting the speed of operation;
- other buttons depending on the multiplier model 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 may have a clear geometric shape or be in the shape of a heart, apple, etc.
Air multipliers can be divided into 3 types based on installation method:
- floor;
- desktop;
- wall-mounted
The first 2 types refer to portable devices, and the last one to stationary devices. Manufacturers often provide two options for one model: wall mounting and table mounting. In this case, the fan must be equipped with brackets and dowels.
When hanging the device on the wall, it is important to use the components offered by the manufacturer. Otherwise you may lose your warranty
Dyson fan: operating principle
Bladeless fans are capable of passing through up to 500 liters of air in 1 second. The outlet flow is evenly distributed, gently enveloping the entire space. During a visual inspection, no moving parts are observed outside the operating device. This is exactly what an air multiplier looks like at first glance.
The principle of such efficient operation of a bladeless fan is the multiple multiplication of drawn-in air at the outlet. This occurs due to the special shape of the blower and the presence of a specially shaped hollow channel inside it.
Among the manufacturers offering their bladeless equipment are the following companies: Flextron, SUPRA(Supra), UNISVET, Clever and Clean, Roward, Dyson, Coolguy, Aaron, RENOVA, Orion, Bladeless, BiLux, MAGNIT.
The price range of bladeless devices from 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 that should be taken into account before purchasing.
When the fan noise is 60 dB or higher, a person will feel tired and may have a headache after just an hour of operation.
Manufacturers indicate the noise level of a specific model in technical specifications. Moreover, this is the maximum level that is achieved when the equipment operates at maximum 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 negative sides identified by users.
Among positive aspects you can note:
- safety;
- uniform air flow;
- minimal electricity consumption;
- convenient control;
- 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 entire structure turned out to be stable.
The special shape of the blower ring allows the fan to gently and evenly distribute air flow throughout the room
Electricity consumption is most often 25 W and 40 W. Models with other characteristics are less common.
Operating the device is simple and intuitive. All the details of adjusting the purchased model are described in detail in the instructions. The air flow power of a bladeless fan is also adjustable.
In addition to the advantages, the bladeless device has its 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 is inferior in this indicator to conventional blade fans.
- Fragility of the structure. This drawback is typical for inexpensive Chinese-made analogues.
Manufacturers strive to take into account all the shortcomings and wishes of customers, improving new fan variations. So, first, consumers were offered various colors and sizes, then - the most intricate shape. Later it was time to reduce the noise level produced by the device as much as possible.
The next task was to reduce energy consumption and add additional functions for humidification and heating/cooling the air passing through the bladeless fan.
Aromatization and ionization of air flows currently only exist in expensive models of the latest generation
DIY bladeless device
The question of creating a fan without blades with your own hands has visited many craftsmen. During the experiments, home craftsmen obtained many working homemade products.
Option #1: product made from plastic buckets
To manufacture the device use plastic container, a simple fan and a glue gun.
From simple and affordable materials you can build in a couple of hours 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;
- stub.
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 exactly the same size as the outer diameter of the pipe.
Using a glue gun, you should carefully and carefully connect these 2 parts together.
The next step is to take a 5 liter bucket and cut 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. You also need to make a hole of the same size in the bottom of the larger bucket and connect them together glue gun. This is a homemade blower.
Now we have to assemble a housing with a motor, the role of which will be played by an axial fan. To do this, put the plug on the side pipe of the tee, having previously applied an adhesive layer there.
It is better to leave a small gap of 1.5-2 cm to allow air access. Then you need to put the PVC pipe on one of the tee pipes and mark the boundary - this will be a segment of about 10 cm that needs to be cut.
Place the cut piece into this pipe and make through hole 5 cm long from the edge
This is where the axial shaft is to be placed electric fan of the required diameter, and lead a wire into the hole for connection to the electrical network.
To give the finished homemade product an aesthetic appearance, all parts can be painted in one color with spray enamel. For example, in white, beige or blue. The case is ready to connect to the network.
All that remains is to place a homemade blower from 2 buckets on top and turn on the fan
If you place a container with ice inside the case, the homemade product will act as an air conditioner. And when placing a piece of cotton wool with 5-7 drops essential oil You can fill the whole room with a pleasant aroma.
Option #2: fan made of plastic pipes
The prototype of the second option was a bladeless device of the brand Dyson. The body and technical part were assembled by a home craftsman according to the scheme of a finished factory-produced product.
Let’s start building a homemade product useful in everyday life with the body:
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To make it, three pieces of plastic pipe were required 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 from a 6″ pipe, its height is 10 cm. We cut the same piece from a 5″ pipe, in the photo it is blue. For the stand, cut 13 cm from the 3.5″ pipe. You also need to find a 6″ container, from which we cut out the bottom
We cut a narrow piece of pipe prepared for the rack to fit a large six-inch ring. To do this, first try on the parts and outline the necessary lines
Cut a hole in the large ring with a diameter approximately 2 cm smaller than the diameter of the stand
Place the hole in the large ring directly above the post and glue it
We strengthen the connection with tape or glue it with mesh adhesive mounting tape. When viewed from the side of the rack, a ring-shaped area should form inside the structure
We glue the fiberglass piece to the five-inch ring. The size of this part should cover the difference between the outer and inner ring
We spray paint the inner ring with the glued part white. Glue the LED strip from the inside to the outer edge of the large ring and assemble the housing
Step 1: Purchasing materials for homemade crafts
Step 2: Cutting the body blanks
Step 3: Trimming the stand to install the ring
Step 4: Trimming the stand to install the ring
Step 5: Gluing the Post to the Large Ring
Step 6: Reinforce the connection with tape or masking tape
Step 7: Fiberglass the 5-inch ring
Step 8: Installing the LED Strip Between the Rings
The case is ready, now it should be equipped with technical stuffing:
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We place the fan in the rack, solder the wires to it, and fix the device parts
Design and operation of a bladeless device
Externally, this type of fan resembles a television antenna or interior decoration - there are no moving parts.
The operating principle of a bladeless fan is based on “air multiplier” technology.
- Air ejected from the nozzle at high speed draws others into motion. air masses, due to the vacuum created around the nozzle.
- A stable air flow is created, only amplified several times. This slightly modified principle was used by James Dyson to develop a fan that does not have blades.
The design of a bladeless fan is extremely simple and effective.
- The device consists of a frame and a base-stand in which a high-speed turbine is mounted.
- Through the cracks it draws in air and delivers it into the frame, the cross-sectional shape of which resembles the profile of an airplane wing.
- The air ring can be either round or oval.
Passing through the ring and unwinding, the air increases its speed by more than 15 times, after which it is ejected through a narrow slot located along the entire perimeter of the frame. At the exit from it, the air speed can reach 85-90 km/h, which creates a vacuum in the air ring, the space of which is instantly filled with air. It is this effect that creates a powerful and continuous air flow, which, together with the entrained air, can move at a speed of 30-35 km/h.
As a rule, the force of the air flow created by this device can be changed by increasing or decreasing the rotation of the turbine.
The most simple device For forced circulation The air in the room is a fan - an impeller with blades mounted on a motor shaft without a gearbox. All fans with open blades have a very unpleasant “side effect” - noise that occurs due to a sharp change in the speed and direction of the air flow on the blades. At low speeds the sound resembles the hum of a low-flying airplane, at high speeds it sounds like a whistle.
The famous English scientist James Dyson worked for a long time to create a device for indoor air convection that operates without noise and drafts. He tested Nikola Tesla's idea of accelerating air flow using a high-frequency, high-voltage electric field. The scientist soon abandoned this idea - high voltage required good insulation and created toxic oxides of nitrogen and metals due to a glow discharge between the electrodes.
The pressure drop as air exits through the gap, which resembles an airplane wing in profile, twists the surrounding air into a spiral. A powerful air spiral, similar to a large donut, moves forward along the axis of the ring, intensively entraining the surrounding air according to Bernoulli's law and creating a zone of turbulence around itself.
The design of the bladeless fan turbine is protected by a patent, so it is not possible to describe in detail the design of the main assembly of the bladeless fan. According to information from open sources, it is known that the fan turbine uses Air Multiplier technology. According to independent examination, the type of bladeless fan is one of the quietest and most economical. It is ISO certified.
- blower;
- housings;
- control panels.
The blower is capable of not only repeatedly increasing the air flow in the room, it is also capable of performing the function of cleaning, cooling, heating and humidifying the air. However, such a variety of functions is available only in the most expensive models. In addition, the blower plays a decisive role in the formation exquisite design device. Its shape and size directly depend on the manufacturer and cost of the climate control device.
Inside the body of the device there is a motor that first draws in air, then accelerates it and, with the help of a blower, takes it out again, evenly distributing it throughout the room.
- buttons with functions to turn the device on and off;
- power regulator;
- additional buttons, the number and functional purpose of which depends on the cost of the device.
The operation of the fan can also be adjusted using the remote control, which in most cases is supplied with the device.
Fans also differ in placement type and can be:
- floor;
- desktop;
- wall-mounted
The bladeless air multiplier is perfect for use at home, in the office, in the country, as well as in kindergartens, hospitals and institutions with large crowds of people, where there is constant circulation fresh air plays a very important role. The use of this device is prohibited in areas high humidity such as swimming pools, bathrooms and saunas.
The abundance of different models from different manufacturers makes this climate control equipment accessible to everyone. Most expensive models quite capable of replacing air conditioners. Some models even have functions for purifying the air from harmful impurities such as smoke, fumes or dust.
Along with significant advantages, this device, unfortunately, is not without its disadvantages, which include:
- Noisy work. At maximum speed, the fan produces noise exceeding 40 dB.
- The high price of bladeless fans is several times higher than the cost of analogues with blades.
- Poor quality assembly in cheap models.
In order not to overpay, many craftsmen make a bladeless fan with their own hands from improvised materials, at home. On the Internet you can find many examples of successful device manufacturing, and now we will analyze one of them.
To make a bladeless device you need to take:
- Two plastic buckets with a volume of 5 and 10 liters.
- Plastic pipe with a diameter of 110 mm.
- Axial fan.
- Plastic distribution tee.
- Stub.
First, you should cut off a part of the pipe 15 cm long. After this, you need to make a hole in a 10-liter bucket that exactly matches the outer diameter of the plastic pipe. Then you need to take a 5-liter bucket and cut 3 cm from the top. You should also make a hole in the bottom of the 5-liter bucket, which will be 2 cm smaller in diameter than the bottom itself.
We make the same hole in the bottom of a 10-liter bucket, then insert the smaller bucket inside the larger one, and connect them together with glue. Thus, a homemade blower will be made. It is very important to correctly calculate the sizes of all holes, otherwise the air flow will be too weak.
Next, a more complex assembly of the housing and axial fan is carried out. To do this, use glue to install a plug on the side pipe of the tee. Then we put the previously cut part of the pipe onto one of the tee pipes and mark a piece of pipe about 10 cm long, which will also need to be cut.
We insert an axial fan into the cut-off part of the pipe and bring out the cord for connecting to the electrical network. To give the finished device a more aesthetic appearance, it can be additionally painted. Such a homemade product can effectively perform its functions, and its cost will be tens of times lower than its factory counterparts.
A fan without blades, the operating principle of which has deservedly become a real breakthrough in the climate control equipment market, should be in every family. Thanks to the existence of affordable analogues, almost anyone can afford an absolutely safe, stylish, multifunctional device. This device can also be made independently. A bladeless air multiplier is a device that can make our life even more pleasant and comfortable.
A fan without blades is often called a Dyson fan in honor of its creator or, as he himself called the device, an Air Multiplier. This original invention is in demand due to its ability to create a uniform air flow and fit perfectly into any interior.
The multiplier looks stylish, and the presence of analogues on the market makes it accessible to a wide range of consumers.
Image gallery
The Dyson air multiplier is capable of multiplying the air flow at the outlet. Moreover, the company’s engineers, designers and technologists create more advanced models that can not only blow air over objects, furniture and people in the room, but also perform functions.
However, the price of such new products exceeds $300.
Different manufacturers offer their fans without blades, differing in build quality, noise level, features and cost.
Depending on the model, the device itself will differ. After all, the more functions it can perform, the more buttons there will be on the control panel.
A fan without blades consists of the following parts:
- frame;
- control Panel;
- blower
The housing contains a motor that is responsible for the operation of the device. There are also special holes on this part through which air will be drawn in when the multiplier is turned on.
Self-production of the device
The bladeless device works much like a jet engine.
. It also has a built-in special turbine that circulates air. This item built into the foot of the fan itself. It ensures silent operation of the device.
There are many small holes on the leg of the bladeless device itself. They provide not only cooling of the device, but also filter the air itself. Such a turbine pump is capable of pumping up to 20 cubic meters of air per second
, which is almost impossible for a conventional fan.
The air mass passes through the distribution ring and turns into a dense contour with the middle inside. The ring is equipped with an empty cavity and a slot through which air passes under pressure. The speed of the air leaving the ring is 90 km/h. At this speed, one air flow meets another, which creates an element of air flow compensation. This process allows you to increase the outgoing air tens of times with its uniform movement.
Bladeless fans, of course, have many advantages over conventional fan models. Their stylish design can serve as decoration for anyone. modern interior both at home and in the office. Having enormous power and high safety, the device without blades also has an affordable price
compared even to cheap air conditioner models. In addition, such a device refreshes the room well and works almost silently, which makes it simply irreplaceable.
The safety of a bladeless device is amazing. This device completely lacks moving parts in the form of blades, which allows it to be used freely even near small children. In addition, the device has amazing power, thanks to which the air is blown out more intensely and the room is cooled faster. The operation of the bladeless fan can be easily adjusted using the control panel, which creates even greater comfort.
The fan without blades conveniently rotates in different directions, so the coolness spreads throughout the entire free space. Models of such devices have a powerful platform, which ensures their stability. Even the control panel is attached to the case
to avoid its loss.
In addition to most advantages, bladeless devices also have some, albeit not entirely significant ones.
flaws:
- Presence of noise and vibration. When the turbine operates silently, the release of air flow is accompanied by a strong hum.
- High cost compared to conventional blade fans.
So, bladeless fans are distinguished by their operating efficiency, modern design and practicality. That is why they are many times superior to traditional models and have already begun to enjoy a certain demand in the household appliances market.
Greetings, friends! Today I will talk about an unusual bladeless fan. The windows of my office are located on sunny side, and in the summer it is incredibly hot there. The management is not yet ready to allocate funds for an air conditioner, but they still approved the purchase of a fan for me.
I haven’t had to choose such devices before, so I don’t understand much about them. I needed a compact one tabletop model, and I began to look at what was being sold on the Internet. Suddenly I came across a very interesting thing - a bladeless fan. I didn’t even know about the existence of such devices before; it looks so unusual that it rather resembles some kind of object from the future or a detail of interior decoration.
The entire design of such a fan consists only of an empty plastic ring and a stand on which it is mounted. I myself would never have guessed what kind of device it was or how it worked. However, judging by the manufacturer’s information and numerous rave reviews, the bladeless fan performs its functions very effectively and, in addition to its ultra-modern design, has many other advantages over traditional devices.
Another important thing for me was the fact that such models have small sizes, and, unlike bulky designs with blades and grilles, will not take up much precious space on my desktop.
Thus, I immediately decided that a bladeless fan was exactly what I needed and decided to choose it. When the order was delivered, I immediately unpacked the box and took out the device from it. It looks just as cool in real life as it does on a computer screen. I immediately decided to try it out, because until the last moment I had doubts about how this simple-looking ring on a stand without any moving parts could serve as a fan.
But, surprisingly, the device not only works, but also does it very well.
As has already become clear, I am very pleased with my new fan, now I will describe its characteristics in more detail.
In 2009, J. Dyson presented the world with his own fan development. The design feature was the absence of blades, which, however, did not prevent the device from creating a stable air flow. Moreover, the volume of air at the outlet exceeded that entering the turbine by one or two orders of magnitude. Do you think it's magic? No, everything is much more serious - aerodynamics.
It's all about the profile of the ring; it is given a special shape.
Thanks to this, the air coming out of the holes is focused in such a way that a low pressure zone is formed in front of the ring (highlighted by a red oval in Fig. 3).
Rice. 3. Aerodynamic modeling of the operation of the Dyson Air Multiplier
Since such an area is surrounded in front and on the sides by increased pressure, air is drawn in from the back of the ring, forming a steady directed flow.
Since the drawing of the device is protected by copyright, we will talk about the operation of the fan, based on the drawings used in the advertising of this product.
Explanation of the picture:
- A – holes for air supply to the turbine.
- B – turbine engine.
- C – air flows inside the ring.
- D – ring.
When turned on, the turbine begins to pump air into the ring, from where it exits under pressure into a small slot (A in Fig. 5) or small nozzles.
Rice. 5. A – Slot for air outlet; B – motor for rotating the ring
Some models (for example, Flextron FB1009, KITFORT KT-401, HJ-007, Bork) have a built-in motor (B in Fig. 5), which allows you to change the direction of the ring, and, consequently, the air flow. Some manufacturers have provided the possibility of installing a special aerosol into the design, as a result of which Airmultiplier Dyson (that’s what Dyson called his brainchild) additionally acts as an air freshener (part model range Kitfort, Supra, Renova, Vesson).
There are bladeless fans with air cooling and heating; such household appliances can be classified as full-fledged climate control equipment.
Original devices are produced with a power plant (turbine) with a power of 25 or 40 W. For Chinese analogues, this parameter can vary over a wide range. Such a small power is quite enough for up to 500 liters of air per second to pass through the ring (again, this value applies to original products).
There are several videos on the RuNet dedicated to this topic, where they are used to create a ring. various materials, starting from plastic buckets and ending sewer pipes PVC. Power plants are also varied, mostly powerful processor coolers, but there are originals that use a vacuum cleaner engine. The effectiveness of such structures and their characteristics are highly questionable, especially since no measurements are provided.
As you remember, to create a low pressure zone it is necessary to focus air flows in a special way. Using ordinary materials at hand, this is quite difficult to do, and work for the sake of work does not carry any rational meaning.
Innovations quite aggressively and intrusively invade our lives. A happy exception was the appearance of an “air multiplier” on the market of household appliances. Amazing Imagination innovative device, a fan without blades, turned out to be extremely comfortable to use, efficient and economical, and it easily won the sympathy of consumers.
The device uses the technological principle of an air turbine. Located at the base of the device, the turbine, through the technological holes in the base housing, sucks in air from the outside and supplies it through a narrow slot into the annular diffuser. The specially adapted profile of the diffuser ring increases the efficiency of the pressure difference, resulting in air being pushed out with force due to the aerodynamic effect. At the same time, the air surrounding the diffuser ring is drawn into the resulting flow; due to this, the working flow increases by 1.5-2 dozen times.
The author of the unusual design shared that he borrowed his idea from the principle of operation of a jet engine and used it to create a fan without blades. The operating principle of this device is figuratively called an “air multiplier”. Innovative developments have resulted in an economical, safe and stylish design.
As a result, it turns out that if a bladed fan produces vortex air currents and intermittently blows the working area, causing discomfort and draft, then a fan without blades creates a dense monotonous comfortable refreshing flow, its operation is unobtrusive, almost unnoticeable.
- clean the blower holes with a brush to prevent them from clogging;
- Wipe the blower and the device body with a damp cloth, removing dust and other contaminants.
- PVC pipes of various diameters;
- hacksaw;
- ruler or construction tape;
- slate pencil or marker;
- “zero” skin;
- plastic food container for food;
- knife with a sharp blade;
- insulating tape;
- hammer drill and drills included;
- crown for woodworking;
- universal glue;
- a piece of fiberglass for window insulation;
- electric jigsaw;
- nitroenamel in an aerosol can;
- LED strip;
- electric soldering iron 220V;
- computer case cooler 120×120 mm;
- non-reinforced heat shrink;
- a set of electrical wires;
- a universal screwdriver with replaceable blades;
- set of fasteners;
- plumber's scissors;
- polymer mesh for air ducts;
- electric heat gun;
- Æ3.5 mm audio connector assembly (“male” and “female”);
- universal pliers;
- electric switch 220V;
- gas cylinder with burner;
- blank for printed circuit board from getinax;
- nichrome wire potentiometer;
- package Schottky diode, NE555 microcircuit;
- capacitors, resistors, diodes;
- rubber feet for the stand;
- Universal network power supply.
How does the fan work?
Modern industry offers a huge number of fans that differ from each other in appearance, installation method and functionality. But some devices can surprise even seasoned specialists. It's about about bladeless fans, which use a completely different type of air flow to create conventional fans principle of operation.
Flaws
The most important advantage of such devices is safety. Due to the absence of moving parts within reach, such a device cannot hurt anyone. In addition, it can be noted:
- Easy maintenance and care.
Despite such impressive characteristics, the design of this climate control device is not without its shortcomings. The main and quite significant disadvantage is high level noise generated by the device. The second, and probably the last drawback is the fairly high cost of the device.
According to experts, household models have the greatest prospects due to their safety. There is hope that engineers will eliminate the high noise level of bladeless fans, and the high demand for such models will force many manufacturers to refocus on their production, which will inevitably lead to a reduction in price.
Humanity has not yet invented a device that has only advantages and no disadvantages, but it is already close to this. Equipment without blades has only conditional disadvantages:
- Noise and vibration. The turbine operates silently, but the atmospheric flow passing through the frame ring causes hum and vibration.
- High price compared to conventional ventilation devices. But even here it should be remembered that the design has the properties of air conditioners, but is much cheaper than them.
- Energy efficiency of such a device. With the same energy consumption, bladeless models have 6-8 times higher power compared to conventional fans.
- Uniformity and narrow focus of the air flow, in contrast to the “ragged” and turbulent one created by the blades.
- Good stability even for a bladeless floor fan, due to the absence of vibration created by the blades of classic models.
- Possibility of smooth power adjustment.
- Possibility of remote control of the device.
- Easy maintenance and care.
I would like to start this review with one of the most popular devices among our compatriots, operating on the basis of “air multiplier” technology, the Dyson Air Multiplier 01 fan. It was this device that became the founder of all models of “air multipliers,” as the innovator himself, the British, called his invention James Dyson.
Bladeless fans, like other models, have a number of advantages and disadvantages. Advantages:
- there are no exposed moving parts, this ensures the safety of children and animals;
- do not dry out the air;
- do not require maintenance.
Flaws:
- noise during operation is about 40 decibels;
- relatively high price;
- fragile body design.
Advantages and disadvantages
The air multiplier has its advantages and disadvantages identified by users.
Among the positive aspects are:
- safety;
- uniform air flow;
- minimal electricity consumption;
- convenient control;
- 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 entire structure turned out to be stable.
The special shape of the blower ring allows the fan to gently and evenly distribute air flow throughout the room
Electricity consumption is most often 25 W and 40 W. Models with other characteristics are less common.
Operating the device is simple and intuitive. All the details of adjusting the purchased model are described in detail in the instructions. The air flow power of a bladeless fan is also adjustable.
In addition to the advantages, the bladeless device has its 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 is inferior in this indicator to conventional blade fans. - Fragility of the structure
. This drawback is typical for inexpensive Chinese-made analogues.
Manufacturers strive to take into account all the shortcomings and wishes of customers, improving new fan variations. So, first, consumers were offered various colors and sizes, then - the most intricate shape. Later it was time to reduce the noise level produced by the device as much as possible.
The next task was to reduce energy consumption and add additional functions for humidification and heating/cooling the air passing through the bladeless fan.
Aromatization and ionization of air flows currently only exist in expensive models of the latest generation
Unfortunately, this device also has disadvantages that significantly affect consumer demand:
- High price original models, it can reach up to 20 thousand rubles or more, which is comparable to the purchase and installation of an inexpensive split system. However, you can put up with this price if the bladeless fan has the functions of heating and cooling the air. Note that Chinese analogues are significantly cheaper, some even by an order of magnitude, but, as already described above, they are less efficient.
- Despite the fact that the fan power plant is low-noise, during operation this device emits a characteristic hum, reminiscent of the operation of an aircraft turbine. Moreover, at maximum power the noise level can reach 60 decibels, which is quite a lot, since an hour is enough for it to give you a headache. True, in this mode the device creates such a strong air flow that discomfort occurs, so the maximum level of operation is practically not used. In normal mode, the device makes much less noise.
- The 15-fold increase in flow stated in the advertisement is technically correct, but there is a certain nuance. This value is typical for the maximum mode, which is practically not used.
How to choose?
First of all, you need to determine the location for installing the fan:
- on the desktop;
- on the ceiling;
- on the floor indoors;
- portable or portable;
- inside the car.
- high-speed centrifugal turbine;
- electrostatic generator of O3 ozone aeroions;
- Peltier element for heating (cooling) air;
- ultrasonic emitter for spraying water.
Dyson bladeless fans can serve as an adequate replacement for an air conditioner and ionizer in room volumes up to 40 cubic meters. m.
Review of models on the market
I have already mentioned that the design of the fan is very simple, it consists of only two parts - a wide hoop and a cylinder-shaped stand, made of high-quality plastic. The body color has many color options, I settled on neutral white.
Device dimensions:
- The diameter of the ring is 12 inches (this is approximately 30.5 cm);
- Fan height – 55 cm.
- The device operates from the mains power supply.
In order to create the most comfortable conditions for yourself, you can adjust the power of the outgoing air flow. Using a movable mechanism at the base of the fan, it can be tilted forward or backward and rotated to the sides. The tilt angle is 10 degrees, the rotation angle is 90 degrees.
The fan was packed in a colored cardboard box. Inside the box, the parts were securely secured in a foam mold. In addition to the device itself, the delivery set includes a remote control and detailed instructions.
| Name | Dyson AM-01 | Dyson AM-02 | Dyson AM-03 | Dyson AM-04 | Unico ION |
| Estimated Cost, $ | 260 | 310 | 340 | 345 | 50 |
| Functionality | cooling | cooling | cooling | cooling/heating | cooling |
| Air flow speed (max), l/s | 450 | 600 | 700 | 130 | 450 |
| execution | desktop | Floor | Floor | Floor | Desktop |
| Manual tilt angle adjustment | – | ||||
| Manual height setting | – | – | – | – | |
| Automatic 90° turns | |||||
| Smooth flow speed adjustment | |||||
| Noise level (max), dB | 64,5 | 63,0 | 65,0 | 64,0 | 60,0 |
| Power consumption (max), W | 40 | 65 | 65 | 2000 | 35 |
| Packaging dimensions, mm | 547x356x152 | 1007x190x110 | 1480x450x280 | 579x200x153 | 580x330x180 |
| Weight (gross), kg | 1,80 | 3,35 | 4,30 | 2,47 | 2,50 |
Image gallery
When operating the device, do not forget about safety measures and under no circumstances use it if it breaks down.
If a malfunction is discovered, you should contact specialists authorized to repair climate control equipment from a specific manufacturer.
Attempting to fix the problem yourself may void the warranty on the fan. If you lack experience in repairing such devices, you can cause even more damage to the equipment.
Image gallery
Bladeless fans are durable and do not require special care or maintenance. Like all household electrical appliances, they should not be turned on if moisture gets inside the housing or in rooms with a relative humidity above 85%. Before turning it on for the first time in a new place, you need to check the voltage in the outlet (220V).
The product can only be repaired by qualified personnel with a clearance group of at least IV. Filling the internal tank with water can only be done after disconnecting the fan from the mains. If the device has been dropped from a great height, it must be inspected by a specialist before turning it on. This must be done even when the fan is working after a fall and there are no visible cracks or chips on the case.
Making the device yourself
How does a bladeless fan work? What complex technologies are used during the distillation of air masses?
This is precisely the principle of operation underlying the operation of a bladeless device capable of short term cool down large area premises. This device consists of:
- a round or oval frame with a small hole for drawing in air;
- a base on which the frame is firmly fixed (the base can be additionally equipped with a frame for fastening to horizontal surfaces);
- mini-turbine mounted inside the frame;
- a small motor located at the base of the device.
A fan without blades works like this:
- When the engine is turned on, a turbine installed inside the frame is activated.
- When the mini-turbine rotates, air is drawn in through a special hole on the frame.
- The air environment, under the influence of turbulence, is accelerated and ejected through the exit frame slot.
- The ejected flow creates a vacuum inside the frame, where air again rushes to fill the voids.
Energy during operation of the device is mainly needed when spinning up the turbine; other physical processes require almost no energy expenditure. This ensures that the bladeless mini fan can be connected even to low-power power sources, for example, a car cigarette lighter.
- floor;
- wall;
- desktop
Show all
History of creation
The bladeless fan looks very different from the product we are used to. The first device appeared in 2009
. thanks to creator James Dyson. He devoted almost 30 years to work aimed at improving many types of household appliances. The English developer managed to come up with many unusual, useful and necessary inventions.
The device quickly gained popularity and soon after its appearance on the market similar fans began to be sold. Now there are even more budget options from Chinese manufacturers.
Fan device
The operation of this device is very similar to the operation of a jet engine. A high-speed turbine with a 40 kW engine, which are connected by a common shaft, is mounted at its base. Only two main parts (base, ring diffuser) are included in the bladeless fan. The principle of operation is based on the operation of a turbine, which ensures the flow of air into the device.
The engine of the device is equipped with a Heimholtz chamber
, which captures and dissipates operating noise. The body of the device has many holes that suck in air. The device's ring diffuser is created according to the rules of aerodynamics. There is a special slot on the surface on the inside. With its help, air is pumped into the working area.
The cross-section of the ring has the shape of a drop, since this shape is ideal from an aerodynamic point of view. It minimizes resistance around itself, which prevents the formation of turbulence.
Bladeless fan
Principle of operation
In a bladeless fan it was used technical principle turbine operation. Located at the base of the device, the turbine sucks in air from outside through the openings of the housing and supplies it to an annular diffuser with a very narrow slot. Its specially adapted profile works to increase the efficiency of the pressure difference. This causes the air to be pushed out with force due to the aerodynamic effect.
The resulting flow is immediately filled with air surrounding the diffuser ring. Due to this, the air flow increases by 15-20 times for a fan without blades. The operating principle of such a device is called an “air multiplier”. This allowed us to obtain a safe and economical design.
It creates a dense monotonous flow that refreshes the air masses. During operation, it functions unobtrusively. The device is almost silent; It's very interesting to watch how a fan works without blades. Unlike a conventional device, it does not create a draft and does not cause discomfort.
Main advantages
A bladeless device has many advantages over a conventional fan. It is ideal for home use and office premises. The devices have the following positive characteristics:
All of these devices are equipped with remote control, which makes them very convenient to use. The control panels are attached to the body so that it is convenient to operate and not lost. Almost all remote controls are equipped with various options where you can select the desired operating mode. This product helps you get fresh air flow at home and at work without noise or discomfort.
In addition to its advantages, the fan has its disadvantages: if you buy a more powerful device, it makes noise during operation, which is very noticeable at high speeds. The price of modern models is high. If you buy cheaper analogues from Chinese manufacturers, they are unstable and creaky.
Manufacturers of bladeless fans are constantly working on existing shortcomings. They periodically improve new models, taking into account consumer feedback and suggestions.
Criterias of choice
The “Air Multiplier” is distinguished not only by its positive characteristics, but also by its original design. His bizarre shape it will decorate any room. Based on the installation method, they are divided into three types:
Wall-mounted devices are stationary type, and the other two are portable devices. Most often, manufacturers of such equipment provide installation of fans in two mounting options: on the wall and on the table. They are supplied with a bracket with dowels.
Consumers are now offered many models that differ in price and functionality. Before purchasing, you need to pay attention to the characteristics of the device and its noise level during operation.
How to make a DIY safe fan
The operating efficiency is affected by the ring radius of a bladeless fan. For indoors large sizes You should choose models with a larger ring. The amount of flow and electricity consumption will depend on the power of the “air multiplier”. For an apartment or house small area It is enough to buy a medium power device. If you choose it for a large office, then you should buy a unit that can move a large volume of air.
It is recommended to pay attention to the body of the product so that it is of high quality and does not have an unpleasant odor. For connoisseurs of comfort, it is advisable to give preference to models with a wide range of adjustment parameters. Availability of a control panel with a convenient button system allows you to easily and simply control your household appliance
.
Features of application
“Air multipliers” are quite common these days. They are installed in houses and apartments, offices, hospitals and other institutions. They gently distribute air flows, but, in addition, they are also capable of humidifying, cooling or heating the air. The range of humidity level settings will depend on the model, so each user has the opportunity to choose for himself suitable option products.
Only expensive models are equipped with heating and cooling. Options are offered to purify the air from fumes, smoke and other harmful impurities. Now you can buy products from world brands that will perform the functions of real air conditioners.
Just recently, no one could have imagined that achievements in science would reach the limits of perfection so far. This is especially true for new products in the field of household appliances. Product range so great that the consumer does not have to be content with something ordinary. Everyone tries to choose the best modern model equipment, especially if it has an updated design.
The most popular new product on modern market A household appliance can be considered a bladeless fan. This invention not only helps to refresh the room, but is also considered an economical type of technology in terms of energy consumption. What is the operating principle of such a device?
History of creation
The bladeless fan looks very different from the product we are used to. The first device appeared in 2009
. thanks to creator James Dyson. He devoted almost 30 years to work aimed at improving many types of household appliances. The English developer managed to come up with many unusual, useful and necessary inventions.
Many countries bought a patent for the production of these new products. Manufacturers are attracted not only by the usefulness of the devices, but also by the improved design and functionality of the equipment. When developing a special fan without blades, more than 4 years were spent modeling a ring capable of efficiently passing air flows, multiplying it many times over.
COOL BLADELESS FAN FROM CHINA!!!
A completely new principle of fan operation was introduced in 2019 by British innovating technician James Dyson. His main idea was to create a device that would be safe, stylish and multifunctional at the same time. The development of the bladeless fan was based on his earlier development of the world-famous hygienic hand dryer.
Leading Dyson engineers worked for four years to create bladeless technology that could effectively pass and multiply air flow. Since 2019, Dyson fans have attracted more and more consumer attention every year, even despite the rather high price, which averages 200 British pounds.
Recently, advertisements for a safe bladeless fan periodically appear on the RuNet; we suggest considering the design of this climate control device for the home and the principle of its operation. We will also talk about the strong and weaknesses this device and its main characteristics. After which we will conduct short review several models of bladeless fans, and at the end of the article we will consider the possibility of creating such an unusual device with your own hands.
Design and principle of operation
In 2009, J. Dyson presented the world with his own fan development. The design feature was the absence of blades, which, however, did not prevent the device from creating a stable air flow. Moreover, the volume of air at the outlet exceeded that entering the turbine by one or two orders of magnitude. Do you think it's magic? No, everything is much more serious - aerodynamics.
It's all about the profile of the ring; it is given a special shape.
Thanks to this, the air coming out of the holes is focused in such a way that a low pressure zone is formed in front of the ring (highlighted by a red oval in Fig. 3).
Rice. 3. Aerodynamic modeling of the operation of the Dyson Air Multiplier Since such an area is surrounded in front and on the sides by increased pressure, air is drawn in from the back of the ring, forming a steady directed flow.
Note that it took Dyson about four years to compile a mathematical model of the profile that would allow achieving maximum effect and finalizing the technology. Most Chinese analogues of its device cannot produce even half the power of the original device. The inventor patented the design, in particular, the profile of the ring and the structure of the turbine that pumps air, so in order to make full-fledged copies it is necessary to purchase production rights from the author.
How does the fan work?
Since the drawing of the device is protected by copyright, we will talk about the operation of the fan, based on the drawings used in the advertising of this product.
Explanation of the picture:
- A – holes for air supply to the turbine.
- B – turbine engine.
- C – air flows inside the ring.
- D – ring.
When turned on, the turbine begins to pump air into the ring, from where it exits under pressure into a small slot (A in Fig. 5) or small nozzles.
Rice. 5. A - Slot for air outlet; B – motor for rotating the ring Some models (for example, Flextron FB1009, KITFORT KT-401, HJ-007, Bork) have a built-in motor (B in Fig. 5), which allows you to change the direction of the ring, and, consequently, the air flow. Some manufacturers have provided the possibility of installing a special aerosol into the design; as a result, Airmultiplier Dyson (that’s what Dyson called his brainchild) additionally acts as an air freshener (part of the Kitfort, Supra, Renova, Vesson model range).
There are bladeless fans with air cooling and heating; such household appliances can be classified as full-fledged climate control equipment.
Original devices are produced with a power plant (turbine) with a power of 25 or 40 W. For Chinese analogues, this parameter can vary over a wide range. Such a small power is quite enough for up to 500 liters of air per second to pass through the ring (again, this value applies to original products).
Advantages and disadvantages
Having examined the structure of air multipliers, we can move on to analyzing their advantages and disadvantages. Let's start with the first one. Advantages:
Unfortunately, this device also has disadvantages that significantly affect consumer demand:
- The high cost of original models, it can reach up to 20 thousand rubles or more, which is comparable to the purchase and installation of an inexpensive split system. However, you can put up with this price if the bladeless fan has the functions of heating and cooling the air. Note that Chinese analogues are significantly cheaper, some even by an order of magnitude, but, as already described above, they are less efficient.
- Despite the fact that the fan power plant is low-noise, during operation this device emits a characteristic hum, reminiscent of the operation of an aircraft turbine. Moreover, at maximum power the noise level can reach 60 decibels, which is quite a lot, since an hour is enough for it to give you a headache. True, in this mode the device creates such a strong air flow that discomfort occurs, so the maximum level of operation is practically not used. In normal mode, the device makes much less noise.
- The 15-fold increase in flow stated in the advertisement is technically correct, but there is a certain nuance. This value is typical for the maximum mode, which is practically not used.
Review of models on the market
Let us give as an example several models of devices available on the Russian market.
Bladeless Fan, a small, inexpensive bladeless desk fan. Made in China. The cost is about $40-$50. A minimum of functions and low power (12 W) allow you to obtain an air flow that is quite acceptable for desktop devices.
Another a budget option with a minimum functional set - Fan Leader, according to suppliers, made in Poland. Also in a desktop version, in the same price range, but slightly higher power - 35 W. Characteristic feature – work zone made in the shape of an oval. Note that this form is found in many models, for example, Orion OR-DSO2.
Well, for comparison, let’s look at the original design - the Dayson Hot + Cool model. This device is available in a floor-standing version. It has an air heating function. Turbine power is 40 W, in heater mode – 2 kW. There is a remote control, an information board indicating the selected mode and the set temperature. For all this pleasure you will need to pay about 500 – 540 dollars.
Concluding the topic of the review, we present comparison table model range of Dynson and the Chinese analogue Unico ION.
| Name | Dyson AM-01 | Dyson AM-02 | Dyson AM-03 | Dyson AM-04 | Unico ION |
| Estimated Cost, $ | 260 | 310 | 340 | 345 | 50 |
| Functionality | cooling | cooling | cooling | cooling/heating | cooling |
| Air flow speed (max), l/s | 450 | 600 | 700 | 130 | 450 |
| execution | desktop | Floor | Floor | Floor | Desktop |
| Manual tilt angle adjustment | + | — | + | + | + |
| Manual height setting | — | — | + | — | — |
| Automatic 90° turns | + | + | + | + | + |
| Smooth flow speed adjustment | + | + | + | + | + |
| Noise level (max), dB | 64,5 | 63,0 | 65,0 | 64,0 | 60,0 |
| Power consumption (max), W | 40 | 65 | 65 | 2000 | 35 |
| Packaging dimensions, mm | 547x356x152 | 1007x190x110 | 1480x450x280 | 579x200x153 | 580x330x180 |
| Weight (gross), kg | 1,80 | 3,35 | 4,30 | 2,47 | 2,50 |
Is it possible to make a bladeless fan with your own hands?
There are several videos on the RuNet dedicated to this topic, where various materials are used to create a ring, from plastic buckets to sewer PVC pipes. Power plants are also varied, mostly powerful processor coolers, but there are originals that use a vacuum cleaner engine. The effectiveness of such structures and their characteristics are highly questionable, especially since no measurements are provided.
As you remember, to create a low pressure zone it is necessary to focus air flows in a special way. Using ordinary materials at hand, this is quite difficult to do, and work for the sake of work does not carry any rational meaning.
The world-famous British innovator James Dyson, the inventor of a bagless vacuum cleaner, a waterfall flowing upward, and a number of other useful and useless things, managed to surprise the world once again. He launched a stylish indoor fan without a rotor or blades. At first glance it is a pure mystery. However, the author does not make a secret of the device.
Sir James Dyson has created a fast water machine and a garden cart with a ball instead of a wheel. The general public are more familiar with cyclone vacuum cleaners, usually not suspecting that it was Dyson who invented the first such device back in the late 1970s. Now many people produce similar equipment. But masterly handling of air flows has become the hallmark of the Dyson company, founded in 1993.
It is not surprising that the sensational new product from Sir James again “conjures” the air. It only became clear at the last moment. And at first the British didn’t even say what region their next design was from. Dyson released this intriguing teaser shortly before the premiere.
Representatives of the test group clearly expressed surprise and interest. Many incredulously extended their hands into the ring, trying to uncover the “deception.” Yes, the ring itself was left behind the scenes in the video. In the pictures below you can see what that wow effect test actually looked like.
"Oh my God!" - "How it works?" - "I can not explain!" (Dyson footage).
This fun device is called the Dyson Air Multiplier. The inventor came up with it in order to rid the table fan of a number of disadvantages: “ragged” turbulent flow, which is not always pleasant when it hits the face, as well as rotor blades.
The latter, firstly, are dangerous for children (kids may well stick their fingers between the bars of the protective grille), and secondly, they accumulate dust (to properly clean them you have to disassemble that very grille). In the Air Multiplier, there is no visible rotor, nothing rotates at all (from the outside, anyway), and wiping dust from such a fan is as easy as shelling pears.
Those who have tried the new product report that the “toy” makes a lasting impression at first, especially if you stick your hand into the ring. It is felt that the main flow is formed somewhere at a short distance in front of the device, in some kind of “focus” (photos gizmodo.com, engadget.com).
The system is based on a plastic ring, the cross-section of which is similar to the profile of an airplane wing. On its inner surface along the entire perimeter there is a gap only 1.3 millimeters thick. A small but very efficient air turbine (driven by a 40-watt electric motor) is hidden at the base of the device.
The device takes air through the grate at the bottom and pumps it into the cavity inside the ring. The air comes out of the narrow gap at tremendous speed and begins to smoothly bend around the internal airfoil. In this case, an area of rarefaction is created opposite the center of the ring, into which air is drawn from the side farthest from the user. This flow is quickly drawn into the general movement. Moreover, the current also picks up some air from the outside of the hoop.
Dyson is introducing three “Multiplier” models to the market at once, differing in color and ring diameter (10 or 12 inches, that is, approximately 25 and 31 centimeters). All three versions cost 200 pounds ($316) in their homeland.
Like most table fans, the Air Multiplier can regularly rotate left and right within 90 degrees, and you can also adjust the angle of the jet to the horizon. The noise from the device is comparable to the buzzing of modern, not very loud vacuum cleaners or hair dryers (photos by Dyson, gizmodo.com).
The turbine (its speed can be smoothly adjusted) supplies over 20 liters of air per second into the slot. And at the outlet of the device, the volume of air increases 10-20 times! This is the “multiplying effect” of Air Multiplier.
The speed of the total flow can reach 35 kilometers per hour. At the same time, at the exit from the slot thin layer, carrying the rest of the air with it, accelerates to 88 km/h.
Thanks to the wing shape and profiled slot, an average of 15 times more air is sucked into the ring than passes through the turbine hidden at the base of the fan (Dyson illustrations).
In some ways, this is a further development of Dyson’s “Air Blade” - an ultra-high-speed hand dryer. Dyson himself says: “Noticing that when the “blade” operates, it attracts a little air from the side, we began to think about how to apply this effect in practice. And they decided to create a device for generating air flows without a traditional “impeller”. Three years of development, then more tests, and now the product is ready.”
The drawings and section reveal where the “fan” itself is hidden, that is, the impeller. However, this tiny turbine with cleverly curved blades, designed on the model of aircraft turbines, bears little resemblance to the simple “propeller” usually used in such technology (illustrations by Dyson, pocket-lint.com, dailymail.co.uk).
Dyson engineers racked their brains a lot to get the flows to combine and “stretch” as needed. Hundreds of prototype tests made it possible to obtain a verified profile with a precisely calculated angle at which the “starting” high-speed flow emerges from the slot. But the result was excellent.
