DIY ultrasonic fog generator. DIY Ultrasonic Humidifier from Mist Maker. Operating principle of mechanical devices

Climate control equipment is constantly evolving, offering consumers new possibilities for regulating microclimate parameters. The solution to the problem of air humidification has long moved from the category of optional filling of massive capacitors and has been implemented in the form of full-fledged independent devices. Today, those who want to refresh the rooms in their home with moisture particles are offered a huge range of compact humidifiers. And a special place in this class of equipment is occupied by fog, which is also suitable for domestic use, but at the same time has its own operational characteristics.

General information about fog generators

Externally, such devices resemble large humidifiers or small-sized mobile air conditioners. By design, it is a small unit that is connected to the electrical network and operates in a given mode. The operating principles of the device are much more interesting. There are two types of generators - for the formation of haze (decorative) and directly for moisturizing cold fog. In the first case, generation is carried out mechanically under pressure - small particles of liquid are literally squeezed out through a pump and compressor and thrown into the room. The peculiarity of such systems is that they work not with ordinary water, but with aerosols and modified mixtures. Of course, they also contain water, but as a diluent. The active ingredients are usually glycerin or glycol. In turn, the ultrasonic fog generator focuses specifically on particle spraying cold water in order to change microclimatic characteristics. The operating principle of this device deserves special attention.

How do ultrasonic models work?

To understand the operating features of such devices, it is important to determine two components of the workflow - this is the device directly generating ultrasound and working environment. The first component acts on the working fluid medium through vibrational waves (ultrasound) at frequencies sufficient to break the surface layer into small elements. During operation, the aqueous medium is called sonicated - in this moment The ultrasonic fog generator performs the following operations on it:

• Impact on the surface.
• Increasing the surface of interaction of sound waves with liquid.
• Dispersion. Dispersion of liquid particles against the background of fine grinding.
• Emulsification. Generation of emulsions.

It is not always necessary to perform a full cycle of the described operations. Moreover, not every generator can, in principle, carry out, for example, dispersion and emulsification. Specific modes of operation with the list of operations are set by the user himself.

Specifications

In the characteristics of the device, you can also see differences from conventional humidifiers. First of all, it's power. For an apartment or small house A 700-1000 W device is quite enough. But if we are talking about large studios, venues or pavilions, then the power should be about 1200-1500 W. This indicator also implies a productivity of 250-300 m 2 /min. That is, this is the volume of steam generation and output. Sometimes manufacturers calculate this value in “cubes”. In this case, the average productivity will be 50-70 m 3 /min. As for the power supply characteristics, 220 V is quite enough to service a household ultrasonic humidifier. A fog generator from the professional segment, however, can also be powered from a three-phase 380 V network. These are industrial installations, which are also large in size.

Positive reviews

From the point of view of the average consumer, ultrasonic generators are distinguished by their ability to quickly fill a room with fog. If the same humidifier or even a steam generator requires from 30 minutes to 1.5-2 hours to provide the required result, then in the case of a fog generator it takes 8-10 minutes. The advantages include the quality of spraying, which is characteristic of even a budget fogger. Ultrasonic also performs well in terms of protective qualities. It is resistant to network overloads and external influences, including temperature.

Negative reviews

Despite the attractive performance characteristics, the ergonomics of most generators of this type leave much to be desired. Both in terms of design qualities and control, users value neat and compact devices for humidification and air washing. In addition, generators require special maintenance. For example, during operation, the membrane for the fog generator of an ultrasonic humidifier must be periodically cleaned or replaced, but components for such equipment are not always easy to find on the market. On the other hand, many owners note the high degree of reliability of the design, so breakdowns are rare.

Making your own generator

To assemble the generator you will need an ultrasonic module for the oscillation function, a power supply, and a fan. Plastic container and plumbing fittings to ensure fluid entry. During operation, the ultrasonic module will create an oscillating effect with the release of small particles of water. In turn, a fan is installed in front of this module, removing the raised particles outside into the room. Accordingly, the water will remain in the container all this time. What other functions should an ultrasonic fog generator have? With your own hands you can assemble a float that will rise and fall depending on the water level. This function is important if you plan to leave the device running for several hours or even days. As the liquid dissipates, the system will approach the shutdown point, which will trigger a float with the mechanics of pressing the corresponding power supply button.

How to choose an ultrasonic fog generator?

Much depends on the purpose of the generator. Most often, such devices are purchased to humidify a room if it was previously dry. In this case, basic parameters are important, including the intensity of fog production, productivity and quality of spraying as such, so that the resulting cloud does not lead to waterlogging of wallpaper or furniture. Again, there are models designed solely for decorative function. They only create a haze with a certain density, which can be used in studio shooting. In this case, you should prefer an ultrasonic fog generator with illumination, which will make the same cloud visually brighter and more impressive. It is important to take into account the possibility of using the generator outside the house, that is, without the possibility of connecting to the electrical network. There are also such devices - in them you will need to calculate the battery potential. On average, batteries provide autonomous operation for 30-60 minutes.

Conclusion

Despite all their advantages, generators with a fog generation function have not yet fully fit into the sphere of domestic use. This is evidenced by both backward ergonomics and an outdated control system. And this is understandable, since the devices came from the industrial segment, in which such qualities are practically not taken into account. In contrast, the performance of this solution is more than suitable for residential maintenance. As for the cost, it is not small - on average 5-6 thousand rubles. However, on the Avito resource you can find an ultrasonic fog generator for 2 thousand. Here, by the way, it will be possible to negotiate with the sellers of components and consumables for the device. They are also inexpensive, but it is important to consider the relationship between the technical parameters of the components and the design of the generator. For the same membranes, the dimensions are standardized, but there are also modern modifications for which new ones were introduced regulatory requirements. Therefore, before purchasing, it is worth thoroughly checking the suitability of individual parts and accessories.

The fog slowly spreading along the bottom of the bowl, located right on the table, smoothly flowing beyond its boundaries and dissolving beyond its boundaries like an unknown and magical substance, would certainly surprise many. Similar effects are created in Hollywood films to convey a mysterious and enchanting atmosphere or to heat up the situation. This seems impossible, and therefore fantastic and mysterious.

Few people know that such special effects can be easily reproduced in an ordinary city apartment; you just need to use a fog generator, which can easily fit on the table and will not only create a fabulous atmosphere, but also “heal” the room. But the scope of this device is much wider than air conditioning or special effects.

Fog generators

Fog generators are devices that are capable of producing and spraying aerosols - dispersed substances, usually consisting of small particles suspended in the air or a dispersed phase. Such systems have found application in many sectors of human activity:

It is hard to believe that a fog generator, having an identical operating scheme, is capable of performing such a wide range of different operations. Of course, industrial and household devices have a number of differences, but their operation is based on the same principle.

Mechanical and thermomechanical generators

All fog generators can be divided into two main types - mechanical and thermomechanical. The first type of devices is most widespread in human practice, since they have a simpler design, are low cost and efficient. The cold fog generator sprays aerosols only due to mechanical action.

Educated in thermomechanical installations mechanically the dispersed phase enters the heating element or combustion chamber, where it evaporates and enters the environment through a nozzle in the form of steam. The advantages of thermomechanical generators include versatility (they can create condensation and mechanical aerosols), as well as more dense filling of a confined space with aerosol.

Operating principle of mechanical devices

A mechanical fog generator creates dispersed aerosols. It, in turn, comes in several subspecies:

1. Pneumatic. The aerosol-forming composition is sprayed into the surrounding space by a gas stream. Gas enters under high pressure and literally breaks the composition into small components - drops. The droplet size, and therefore the degree of atomization, is controlled by changing the jet speed.
2. Ultrasonic. The design of such devices contains an element that vibrates in the ultra-range. As a rule, this is a piezoelectric plate or ceramic disk. The element, vibrating at a high frequency, “breaks” and sprays the composition.
3. Disk. In such devices, an aerosol-forming mixture is supplied to rapidly rotating disks, which is sprayed into the environment under the influence of centrifugal acceleration.

The mechanical device is also called as This is due to the fact that the resulting dispersed phase has the same air temperature environment. Heating elements do not take part in this process.

Use of fog generators in everyday life

To create a special atmosphere in the house and improve the atmosphere in the premises, only mechanical devices are used. As a rule, these are in which the role of a vibrating element is played by one or more round-shaped membranes. The intensity of water spray depends on the number and diameter of the membranes.

To maintain the functionality of such equipment, it is necessary to regularly clean and replace the membranes. In the fog generator device for home use Piezoelectric plates may also be included. In this case, the service life of the device can be considered infinite. Such devices operate from a 220V power supply.

Fog generator to protect your home

The introduction of fog generators into security smoke systems is an innovative solution that has repeatedly proven its feasibility. The operation of this design is based on the interaction of penetration tracking devices and aerosol dispensers.

In the event of unauthorized entry, the indicators send a signal to the control device, which gives an order and starts spraying the aerosol-forming mixture into the fog generator. User reviews show that, having encountered an obstacle in the form of smoke on his way, the criminal prefers to retreat rather than continue his onslaught.

Cost of fog generators

Say something specific about the cost household devices, generating fog, will not work. Their price depends on many indicators. One of the determining factors is the operating principle, spray intensity, power and country of origin.

Additional equipment also has a minor impact, e.g. LED lights or a floating raft, which allows you to use a fog generator in a small pond. The price of devices that include such modifications begins to rise from 2,000 rubles.

Then the cost begins to increase proportionally technical specifications: the higher the power and more membranes, the more expensive the device will be. So, for a generator with 12 ceramic discs and a power of 300 W you will have to pay about 23 thousand rubles. Advice that can be given to buyers is to purchase goods only from trusted stores.

Now on store shelves there is a huge selection of household humidifiers, ranging from the simplest “donut”, which floats in a glass of water and is powered by a USB port, to expensive office humidifiers with sophisticated automation. Basically, most of these goods come to us from neighboring China, and therefore there is no point in talking about the durability of the device. For example, my 5 liter household humidifier in the mycelium worked for only six months, after which not a single workshop was able to bring it back to life. It’s good that for testing I ordered a small batch of mist maker from China, these are small ultrasonic fog generators that only need a 24-volt power supply. They look like this:

The difference between these two models is only in the diameter of the ceramic-coated working plate, in the first photo the diameter is 20mm, in the second it is 16mm, and naturally the first one works much more efficiently. I only had to make a float and take a bucket under the container where the mist maker floats. It works reliably, I only add water. A little about water - water should be as clean as possible, perfect option- distilled, the durability of the ceramic plate depends on the water, and secondly, what salts are in the water, then when ultrasound works, all these salts, together with the fog, will float in your room, covering everything with a thin white coating. I told and showed how to make a humidifier in the video.

A cold fog generator will help make the fight against bacteria and insects effective. This device is designed for industrial and household disinfection, including in the presence of animals. How to choose a unit, what are its advantages over other means of control, are there any contraindications? Information about the device and principle of operation, as well as advice and reviews from experts and users will help you understand all the nuances.

Scope and classification

Aerosol equipment allows you to disinfect premises in order to get rid of harmful or infected insects. Also, treatment using cold fog can pursue the following goals:

• sanitation (reducing the level of pathogenic microflora);
• fumigation (one of the methods of exterminating pests and plant pathogens).

To generate disinfection steam, fog generators are used. According to the type of impact, they are divided into cold and hot. The hot fog generator is mainly used for offices and places common use. The effect of cold fog is more universal.

Attention! It is possible to destroy not only adults, but also their larvae, using a hot fog generator. However, this method is dangerous for residential premises, especially those where there are pets.

Where can you use a home fog generator:

Principle of operation and features of the procedure

The transformation of the aqueous solution into steam occurs after contact with the air flow created by the compressor. Depending on the type of generator, the compressor can be powered by an internal combustion engine or an electric motor.

The droplet size depends on the nozzle parameters and varies from 10 to 80 microns. The temperature of the aerosol corresponds to the ambient temperature; the suspension remains in the air for about 4 hours. During operation of the device, the noise level is not high. Up to 4 nozzles can be supplied in a set.

Benefits of aerosol disinfection

Compared to others, using existing methods removing insects and disinfecting the premises, this method has the following advantages:

Choosing a cold fog generator

Thanks to their mobility and fairly simple operation, such devices are available not only to specialists, but also to home use. As a rule, it is purchased by owners of various industrial and commercial premises, as well as for private use.

In order to do right choice, you should understand the following questions:

• what type of processing is expected to be carried out;
• what is the maximum area to be treated?

The first question will help you decide on the type of unit - buy hot or cold. The second is to choose power. Having calculated the consumption of the selected drug and the required volume, you should choose a device that can spray this volume in 30 to 60 minutes. This is the recommended exposure period when working with a cold fog generator. To treat large rooms, you can use several generators simultaneously, reducing the total exposure time.

Attention! In some cases, the exposure time can be increased if this is permissible by the solution used and the specific generator model.

Before starting work, you should pack dishes, personal hygiene products, etc. in sealed packaging. If possible, remove paintings and other decorative elements from the walls. Remove people and animals from the premises, remove food. Remove dust, do wet cleaning. Everyone present during processing must wear clothing that covers the body, as well as respirators that protect the respiratory tract.

After spraying the product, you should put your clothes in the wash, wash your hands, and take a shower if necessary. After the suspension has settled, the room should be ventilated. Depending on the area, the procedure can last from one to several hours. In a living room, you need to wash surfaces that often come into contact - tables, etc. You should use a soap solution.

Review of popular models

SM Bure. A new generation Korean device, designed for a volume of 2.5 to 4.5 liters. Works with all types of pesticides, disinfectants, fresheners, antibiotics, etc. Lightweight design, easy to handle and move.

Longray 2680 A. Chinese-made generator that produces ultra-low volume fog. Designed for various types of liquids, both water and oil based. Has proven itself well when working in:

• domestic premises;
• in public places;
• industrial use;
• agriculture;
• for public health.

Forms an almost invisible suspension, which improves its distribution over the treated area. The tank volume is 6 liters, and the weight of the unit is 4.20 kg. The case is plastic, resistant to chemicals.

BURE – W2. Wireless, small-sized generator powered by a lithium-ion battery. The body is made of stainless metal, total weight- 4.3 kg. Work with minimum consumption liquid, there is an option to control the pump power.

A cold fog generator can cope with problems such as insects, as well as disinfect the most different rooms. This device can be used for both domestic and industrial purposes. To choose the optimal model, you need to understand what type of processing is required, as well as the area of ​​the room. Based on this, you can choose a model based on the fluid flow rate parameter.

Aerosol cold fog generator BURE SM B100: video