What can be cooked from squid: quick and tasty

Fans have long been affordable and effective devices that help maintain the desired microclimate in an apartment or office. The health, well-being and performance of people in the room will depend on the pressure, temperature, relative humidity, air flow rate of such a device.

Device device

The simplest device for forced air circulation in the room is a fan - an impeller with blades mounted on the motor shaft without a gearbox. All fans with open blades have a very unpleasant " by-effect»- noise arising from a sharp change in the speed and direction of the air flow on the blades. At low revs, the sound resembles the hum of a low flying aircraft, at high revs - a whistle.

The famous English scientist James Dyson worked for a long time on the creation of a device for convection of air in a room, which works without noise and drafts. He tested Nikola Tesla's idea of ​​accelerating air flow using a high-frequency, high-voltage electric field. Soon, the scientist abandoned this idea - high voltage required good insulation and created poisonous oxides of nitrogen and metals due to a glow discharge between the electrodes.

The second idea Dyson tried was his own. He wanted to create a fan without the main drawback - increased noise during operation, arising from a sharp change in the speed and direction of the air flow. The fan casing, reminiscent of an aircraft wing in profile, was made by the scientist in the form of a ring with a slotted slot for air outlet around the circumference. A high speed air turbine without blades, similar in design to a water mill, is located at the bottom of the housing. It sucks in air through the slots and feeds it to the second turbine. high pressure located at the top near the ring. The compressed air is expelled at high speed through a narrow slot in the plastic ring.

The drop in pressure as the air exits through a slot, which resembles an airplane wing in profile, spirals the surrounding air. A powerful air spiral, similar to a large donut, moves forward along the axis of the ring, intensively dragging the surrounding air along with it according to Bernoulli's law and creating a zone of turbulence around it.

Bladeless fan turbine design is patented, therefore, it is not possible to describe in detail the device of the main unit of the bladeless fan. It is known from open sources that the fan turbine uses Air Multiplier technology. According to an independent examination, the bladeless fan type is one of the quietest and most economical. It is ISO certified.

Operating principle

The tabletop bladeless fan is based on the centrifugal air turbine principle. During operation, a soft air flow arises, which comfortably cools the air in the summer heat. The speed and distribution of the flow do not create drafts. Air is sucked into the device through narrow slots using a bladeless impeller mounted on the shaft of a high-speed motor without a gearbox. The impeller design resembles a gas turbine.

To reduce noise, the intake air passes through the Hemholtz chamber, which absorbs noise due to back resonance. Then air is supplied through a tube to a ring with a slotted hole around the perimeter, which in cross section resembles an airplane wing. At the outlet, the air forms a laminar flow, which, due to the aerodynamic profile of the slot, flows out at a high speed, causing a pressure drop in the region of the high-speed air flow.

According to Bernoulli's law, the pressure drop in the high-speed flow zone carries with it the surrounding air, increasing the mass moving at high speed by almost fifteen times. The impact of a bladeless fan on the indoor microclimate can be multiplied if the reservoir in the housing is filled with water or a simple ultrasonic humidifier is placed in front of the fan in the direction of air movement. At the same time, the air temperature drops by 3-5 ° C. If more intensive cooling is required, the reservoir can be filled instead of water:

• dry ice (t - 78.5 ° C);
• a mixture of ice and salt (23.1% NaCl, 76.9% ice, t - 21.2 ° C);
• a mixture of ice with calcium chloride (29.9% CaCl2, 70.1% ice, t - 55 ° C).

The following year, Exhale Fans launches a ceiling-mounted model of a bladeless fan developed by Nick Heiner. The ceiling fan ensures more correct distribution of cool air along the walls in downdrafts. Compared to the floor-standing model, the innovative fan eliminates turbulent air currents and drafts, and does not take up unnecessary floor space.

Advantages and disadvantages

Bladeless fans, like other models, have a number of advantages and disadvantages. Advantages:

• there are no open moving parts, this ensures the safety of children and animals;
• do not dry out the air;
• do not require maintenance.

Disadvantages:

• noise during operation about 40 decibels;
• relatively high price;
• fragile body construction.

Types of bladeless fans

The table fan allows fresh air to be supplied to workplace, to cool powerful computer equipment, hot meals and drinks, to carry out aromatherapy at home. It can be easily carried from one place to another. The floor fan is designed to be installed on the floor. High power and air flow rate make it possible to provide comfortable conditions in a separate room, office or apartment. A slight increase in noise is eliminated by moving the device away from the person. The shape and parameters of the fan allow you to completely replace the air in the room in a few hours.

Portable fan can be used on the beach, on a camping trip, caves, desert, tent, train, car, yacht on the high seas. Most portable models are powered by a built-in battery, a computer USB port, more expensive ones - from solar panels... Their main advantages are low weight and size, energy autonomy. A special place among portable models is occupied by automobile bladeless fans powered from a 12V vehicle network. They are much cheaper than car air conditioners, they allow you to quickly ventilate the car interior, remove the smells of gasoline, diesel fuel, car enamel, synthetic glue and primer.

How to choose?

First of all, you need to define place for fan installation:

• on the desktop;
• on the ceiling;
• on the floor in the room;
• portable or portable;
• inside the car.

In offices, it is best to use Dyson's desktop or floor models. They are designed for areas where people work and are fully ISO compliant. Inside the fan housing there are:

• high-speed centrifugal turbine;
• electrostatic generator of ozone O3 air ions;
• Peltier element for heating (cooling) air;
• ultrasonic emitter for spraying water.

Dyson bladeless fans can serve as an adequate replacement for an air conditioner, an ionizer, with a room volume of up to 40 cubic meters. m.

Care and maintenance

Bladeless fans are durable, they do not require special care and maintenance. Like all household electrical appliances, they must not be turned on if moisture gets inside the case or in rooms with a relative humidity of more than 85%. Before switching on for the first time in a new place, you need to check the voltage in the outlet (220V). Only qualified personnel with an approval group of at least IV can repair the product. Filling the internal reservoir 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.

Can you do it yourself?

To assemble a fan with your own hands, you need to have the skills of locksmith and electrical work, as well as purchase all the necessary parts in the store. For a bladeless fan, you need to purchase:

• PVC pipes of various diameters;
• locksaw hacksaw;
• building ruler or tape measure;
• slate pencil or marker;

• skin "zero";
• plastic food container for food;
• knife with a sharp blade;
• insulating tape;

• hammer drill and drills in a set;
• a crown for woodwork;
• universal glue;
• a piece of fiberglass for window insulation;

• electric jigsaw;
• nitro enamel in an aerosol can;
• LED tape;
• electric soldering iron 220V;

Quite recently, no one could have imagined that advances in science would reach the limits of perfection so far. This is especially true of new products in the field household appliances... The assortment is so wide that the consumer does not have to be content with something ordinary. Everyone tries to choose the most modern model technology, especially if it has an updated design.

The most popular new product on modern market household appliances 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 electricity consumption. What is the principle of operation of such a device?

How the bladeless fan was created

This type of device, as a bladeless fan, was invented by the famous English scientist James Dyson... His goal was to invent such a device that could work without blades and excluding any vibration. In addition, the scientist managed to develop such a technology that was able to increase the blown air up to 15 times. The creation of a device without blades has passed a very difficult path, and the technology could be perfect only after a long work of engineers led by Dyson. About 4 years were spent on the miracle invention. As a result of the development, the innovators still managed to optimize the ventilation ring.

The fan is driven by a simple electric motor that has a power of 40 W and is located on the bottom of the device. The motor is equipped with powerful neodymium magnets to prevent dust build-up. The air speed can be easily adjusted with a rheostat switch, which cannot be achieved with conventional paddle devices.

Dyson was able to create a safe fan without blades that could supplant conventional fans. After all, this type of device is very convenient and unpretentious to use.

How a Bladeless Fan Works

The bladeless device works in much the same way as jet engine... It also has a built-in special turbine that circulates air. This element is built into the fan foot itself. It ensures silent operation of the device.

On the very leg of the bladeless device, there are many small holes. 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 pressurized air passes. The speed of the air leaving the ring is 90 km / h. At this speed, one air flow meets another, which creates an air flow compensation element. This process makes it possible to increase the outgoing air tenfold with its uniform movement.

Bladeless fans, of course, have many advantages over conventional fan models. Their stylish design can serve as a decoration for any modern interior both at home and in the office. With enormous power and high safety, the bladeless device also has an acceptable cost compared to even cheap air conditioners. In addition, such a device freshens the room well and almost works without noise, which makes it simply irreplaceable.

The safety of the bladeless device is striking. In such a device, there are completely no moving parts in the form of blades, which allows it to be freely used even close to small children. In addition, the device has amazing power, thanks to which the air is blown out more intensively, and the room is cooled faster. The bladeless fan can be easily adjusted using the control panel for even more comfort.

The fan without blades rotates comfortably in different directions, so the coolness spreads throughout the free space. The models of such devices have a powerful platform that ensures their stability. Even the control panel is attached to the body to avoid losing it.

In short, bladeless fans have the following advantages over conventional models of such devices:

In addition to most of the advantages, bladeless devices have some, albeit not quite significant limitations:

1. The presence of noise and vibration. When the turbine operates silently, the air flow is accompanied by a strong hum.
2. High cost compared to conventional paddle fans.

So, bladeless fans are distinguished by their efficiency in operation, 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.

One of the novelties of the HVAC equipment market is a bladeless fan. The device arouses interest and doubt among potential buyers at the same time. The unusual bladeless fan surprises with its appearance and functionality.

Someone decides to purchase it, while someone worries that the money will be wasted. To dispel doubts about the performance of the equipment, you need to get acquainted with its device, the principle of operation and the features of operation.

The model, radically different in its appearance from others familiar to many from 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, patents for which were sold in different countries the world.

Bladeless models allow you to calmly rest, enjoying the coolness and not worrying that some of your pets or children will get hurt by hitting the fan blades

All his developments are distinguished by exquisite design and improved functionality. Mr. Dyson, while 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.

About 4 years the leading engineers of J. Dyson's company have spent on modeling a fan ring that can most effectively pass air through itself, multiplying it many times over.

The Dyson bladeless device was already on sale in the inventor's homeland for 199 British pounds in 2010. 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 out a novelty - a ceiling version of a bladeless fan. This is Exhale Fans equipment designed by Nick Heiner.

Design and operation of a bladeless device

The fan without blades is often named after its creator as the Dyson fan or, as he called the device, the “Air Multiplier”. This ingenious invention is in demand for its ability to create an even flow of air and fit perfectly into any interior.

The multiplier looks stylish, and the availability of analogues on the market makes it available to a wide range of consumers.

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However, the price of such new products exceeds $ 300.

The device itself will differ depending on the model. 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. 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, it is provided remote control... 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 and off button;
• rheostat for adjusting the operating speed;
• other buttons depending on multiplier model and manufacturer-provided functions.

The blower is round or oval in shape. Its size depends entirely on the product model. This part of the fan can have a clear geometric shape or be in the shape of a heart, an apple, etc.

Air multipliers can be conditionally divided into 3 types according to the installation method:

• floor;
• desktop;
• wall.

The first 2 types are portable devices, and the last one is stationary. Manufacturers often provide 2 options for one model: wall mounting and table mounting. In this case, the fan must be completed with brackets with dowels.

It is important to use the accessories offered by the manufacturer when hanging the device on the wall. Otherwise, you may void your warranty.

Dyson fan: how it works

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. During visual inspection, moving parts outside the operating device are not visible. At first glance, this is exactly what an air multiplier looks like.

The principle is effective work a bladeless fan is a multiple multiplication of the drawn in air outlet. This is 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, 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 influences 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 buying.

When the fan noise is 60 dB or more, a person will become tired and have a headache after an hour of work.

Manufacturers indicate the noise level of a specific model in technical characteristics... Moreover, this is the maximum level that is achieved when the equipment is operating 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 advantages and disadvantages identified by users.

Among positive sides you can note:

• security;
• 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 at the bottom and the absence of vibration from the rotation of the blades, the whole structure is 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.

The control of the device is simple and straightforward. All the subtleties of adjusting the purchased model are described in detail in the instructions. The air flow rate of the 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 hum at maximum speed.
• High price... The equipment loses in this indicator to the usual paddle fans.
• The fragility of the structure... This disadvantage is typical for inexpensive Chinese-made counterparts.

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 the turn to reduce the noise level produced by the device as much as possible.

The next challenge 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 exist only in expensive models of the latest generation

Diy bladeless device

The question of creating a fan without blades with your own hands has been visited by many craftsmen. In the course of experiments, home craftsmen have obtained many working homemade products.

Option # 1: product from plastic buckets

For the manufacture of the device, a plastic container, a simple fan and a glue gun are used.

From simple and affordable materials in a couple of hours you can build 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, these 2 parts should be carefully and neatly connected 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 less 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 with a glue gun. This is a homemade blower.

Now we have to assemble a case with a motor, 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, having previously applied an 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 to put the PVC pipe on one of the branch pipes of the tee and mark the border - this will be a segment of about 10 cm to be cut off.

Place the cut piece in this pipe and make a through hole 5 cm long from the edge

It is here that an axial electric fan of the required diameter will have to be installed, and a wire will be brought out into the hole to be connected to the electrical network.

To give the finished homemade product an aesthetic look, all parts can be painted in one color with aerosol enamel. For example, in white, beige or blue. The enclosure 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 a container with ice inside the case, then 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: plastic pipe fan

The prototype of the second option was bladeless device stamps Dyson... The body and the technical part are assembled by a home craftsman according to the scheme of a finished product of factory production.

We'll start the construction of homemade homemade products from the building:

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It took three pruning to make it. plastic pipe different diameters, 12 V fan, toggle switch with connecting 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. The same segment is cut from a 5" pipe, in the photo it is blue. For the stand, cut off 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 under a large six-inch ring. To do this, first try on the details and outline the necessary lines.

Cut a hole in a large ring with a diameter of about 2 cm smaller than the diameter of the rack

Place a hole in the large ring directly above the counter, glue it

We fasten the connection with tape or glue it with mesh adhesive mounting tape. When viewed from the side of the rack, an annular platform should form inside the structure.

Glue the fiberglass piece to the five-inch ring. The size of this part should cover the difference between the outer and inner rings.

The inner ring with the glued part is painted white from a spray bottle. We glue the LED strip from the inside to the outer edge of the large ring and assemble the case

Step 1: Purchase materials for homemade homemade products

Step 2: Cutting the body blanks

Step 3: trimming the rack to fit the ring

Step 4: trimming the strut to fit the ring

Step 5: glue the stand to the large ring

Step 6: Reinforce the connection with tape or masking tape

Step 7: Cover the 5-inch ring with fiberglass

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 put the fan in a rack, solder the wires to it, fix the details of the device

The traditional ceiling fan design is well known. Usually, its blades whistle through the air under the ceiling of the room, directing the air flow downward. Being directly under the fan, you can enjoy the "light breeze" and take the risk

The traditional ceiling fan design is well known. Usually, its blades whistle through the air under the ceiling of the room, directing the air flow downward. Being directly under the fan, you can enjoy the "light breeze" and risk catching a cold at the same time. But in the rest of the room, the effect of the flow is practically not felt.

Inventor Nik Hiner, together with like-minded people from Exhale Fans, offers a product that is free from the listed shortcomings and has an unusual innovative design.

Everything is turned upside down in the new design. No, the fan is still attached to the ceiling of the room, but it does not have any blades whistling overhead, and it does not blow out the air flow, but draws it in.

Instead of blades, flat discs rotate, creating laminar (unidirectional) air flows that move along the surface of the ceiling and descend to the floor along the walls of the room. As a result, the air entering the fan from below circulates evenly throughout the room, mixing the temperature layers. Unlike a conventional paddle fan, in a room completely surrounded by laminar flow, areas where temperatures significantly deviate from the average are eliminated.

There are no rotating blades in the design, which predetermines a fundamentally lower noise level during operation. In addition, a low-noise electric motor is used to rotate the circles, which practically reduces the overall noise level to a minimum. The DC motor can rotate at six different speeds and is controlled by a wireless remote control. Of course, the indisputable advantage and difference of the new fan from the blade counterparts is appearance that fits perfectly into almost any interior.

The idea of ​​the bladeless ceiling fan came to Hiner when he was studying the design of the Nikola Tesla turbine. Hiner made his first attempt at implementing an unusual design in 2005. The next years were spent adapting the design and producing a whole series of prototypes before settling on the current design.

Today the fan is almost ready for production. Its launch requires a certain amount, which Hiner intends to spend on the development of packaging and the purchase of raw materials.

With the onset of heat, we recall fans, the simplest and most affordable human inventions for air freshening. The classic design of the fan consists of an engine, on the shaft of which an impeller with many blades is fixed. During fan operation, air is sucked in from the rear side of the fan, and passing through the blades at an increased speed is pushed forward, creating the effect of cooling and freshness.
Regular fan has a number of disadvantages: noise and vibration from the blades, which collect dust and air pollution. In order to clean them, it is necessary to remove the protective grill. The speed of such fans is regulated in only a few modes, and it is quite difficult to adjust the airflow angle.
Our proposed alternative device is free from these disadvantages. This development was invented by Dyson engineers, presenting an almost revolutionary solution in the field of air ventilation. Thanks to them, the world has learned what a bladeless fan is. And today we will collect it at home.

The principle of operation of the bladeless fan

Materials, tools for a bladeless fan

• Sections of PVC pipes with a diameter of 150, 125, 90 mm;
• Fast drying glue for plastics, such as super glue;
• A small piece of plexiglass or plexiglass of blue color;
• Server cooler YW880, frame width -60mm;
• Aerosol paint white, 1 can;
• A piece of soft metal mesh with cells of about 10 mm;
• Rheostat speed control board, toggle switch;
• Solder, flux, thermocambric, self-tapping screws;
• Section led strip, length - about 50 cm;
• Power supply (adapter) for 12V / 2 A;
• Insulating tape.

• Miter saw or angle grinder (angle grinder) for cutting PVC pipes;
• Jigsaw for cutting curved lines;
• Drill or screwdriver with a 50-60 mm bit-bit;
• A set of drills of various diameters;
• Soldering iron, screwdriver, scissors, pliers, hot glue gun;
• Painting knife.

The order of work

Cooking plastic pipes

Electrical part