Schemes of dryers for lumber. Drying chamber for lumber: how to make it yourself? Types and manufacture of drying chambers. Vacuum wood drying with their own hands

For various products from wood (furniture, musical instruments, parquet, etc.), its drying temperature is used and a certain humidity is saved.

The tree, despite the development of modern technologies, still remains an indispensable material in many branches of the economy. It surrounds us everywhere, used in the manufacture of furniture, in the construction industry, even in aviation, it still finds its application. Of course, various polymers, synthetic resins, steel and alloys various metals Actively replace wood even in traditional niches for her. But the full failure is impossible. Therefore, there will always be a need to prepare wood for use in different branches of human activity, in its drying. We will try to give answers to questions related to such necessary equipment like a lumber dryer, with their own hands made and debugged.

Why do you need to dry wood?

Drying for lumber is extremely required processwithout which the wood simply cannot be used.

The quality of the tree depends on the correct drying.

If you have your own business related to the production of wood products, then you can't do without your drying chamber. But first, let's try to understand what this dryer is needed, for what you need to dry lumber. All business B. natural humidity Any tree. If you perform a product from unusted wood, it will eventually fuse, gone cracksAnd it will remain just throwing out. In addition, the properly dried tree improves its performance, becomes more durable, resistant to environmental impacts and less exposed to destructive mold. In the old days, to prepare the forest to use it was dried even without years, but decades. Often, under a special canopy laid logs, prepared for grandchildren. Imagine, not even for children, but for grandchildren.

To our happiness modern technologies Let us significantly speed up this process. And at least this process is still quite a lot and is complicated, it is still impossible to compare it with traditional technologiesand the result is even better.

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Humidity of sawn timber

It is important to understand that the tree is a living organism and in its cells contains moisture, while it is alive. In general, the moisture content of freshly chopped wood is equal from 30 and higher than percent. If we want to use wood, then we need to get rid of excess moisture. What kind of moisture is superfluous? It depends on what we are going to use the board or log, prepared for production. If the tree goes to the manufacture of products where it is required highest accuracy assembly (for example, for production musical instruments, sports equipment, parquet and some types of furniture), then its humidity needs to be reduced to 6-8 percent. If you simply prepare lumber to long-term transportation, for example, export, then humidity sufficiently reduce up to 20 percent.

This same wood will suit And for some types of buildings, for the production of containers and other goods. The remaining products require wood moisture between these two extremes. Floor boards, cash, the trim board may have humidity within 15 percent. BUT window Rama., doors, staircase elements or decorative products We will require wood from 8 to 15 percent of humidity.

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Making the dryer with your own hands

Consider finally the construction of the most drying chamber. First you need, in addition to the main building materials for the manufacture of the chamber, purchase a heating device, a fan and a good insulation.

Drying chamber diagram.

You can use the ready-made room for the construction of drying, and you can build it specifically. It is desirable that the ceiling and one wall are constructed from reinforced concrete, while the other walls are made of wood, which later need to hide heat insulating materials: First, they cover them with foam plates, we are cutting with clap and then cover all foil sheets. The next step must be installed any heating device, for example, a heating radiator in which water should heat up to 65-90 degrees. Since the continuity of heating is needed, it is better to immediately make a system of heating autonomous, with its oven and pump for the constant circulation of the coolant. It is absolutely necessary in the drying chamber and a fan that, overclocking the air around the room, should ensure the uniform of the warm-up of the entire drying space and laid wood.

You need to think about the laying question in advance wood material For drying, how wood will join it whether it will lie in the midst of the camera or on special shelves, etc. Good options For the loading of the tree is the trolley on the rails or a forklift. Take care of the presence of instruments for registering moisture and temperature in the drying chamber, without them it is impossible to effectively control over its operation.

Temperature diagram of the air and humidity in the drying chamber.

During construction, take into account some of the nuances. In the chamber, the drying should not sharply fluctuate the temperature, ensure everything possible to change smoothly. Otherwise, you risk to destroy all the stocks of the tree laid in the drying. It can go cracks and swallow. It is worth remembering about fire safetyAfter all, you are dealing with heating devices and large stocks of dry wood. To do this, keep the fire extinguisher in the immediate vicinity. Of course, something from the listed can be replaced by the analogues available in the house, in particular, the water heating radiator can be replaced with electric heating devices, up to the electric stove with a pair of enabled burners. Only again we remind you of fire safety, be careful. The walls of the dryer can be insulated not only by foam, but also by others suitable materials, up to the same wood chips, and foil can replace the foam, which is not bad to reflect heat radiation back to the chamber.

The main thing in construction is to achieve the creation suitable conditions inside the chamber, and what material or technology you used, not critical. In such a domestic drying, sawn timber will dry about 1-2 weeks.

All photos from the article

The dryer for boards is done with their own hands if there is a need for the processing of a large volume of unprepared wood. Of course, you can immediately acquire the workpieces with optimal humidityBut in this case, the cost of buying material will be very high. So the construction of a special device may be quite effective from an economic point of view.

In our article we will tell. How to dry wood, and give recommendations for independent arrangement Drying chamber.

Theoretical aspects

Moisture in the tree

Before you begin to design the dryer, we need to understand why it is needed. As the name follows, such devices are designed to remove excess fluid from wood, and here it is worth paying the attention of the theory.

All moisture in the wood is divided into two groups:

• free - in the cavities of cells and in the intercellular spaces. The content of free moisture is primarily determined by the conditions in which the tree grew, as well as the storage conditions of the cutting blanks. When drying, free moisture comes out of wood rather quickly;
• the associated (structural) is a liquid that is part of the cell walls. For each breed of the tree, the level of moisture structure is characteristic. At the same time, the removal of the associated fluid occurs very slowly, because in natural conditions the drying can take from several months to several years.

As a rule, the limit of saturation of wood moisture is at the level of 30%. A tree with greater humidity is considered raw and almost never used for work.

Humidity indicators for miscellaneous material Different:

Why need drying

So, with the most moisture, we figured out, now let's analyze why we need to reduce it.

1. When removing moisture naturally changes the configuration of wood fibers, due to which the size of the board is reduced - it dries out.
2. At the same time, the workpiece loses moisture unevenly, therefore the deformation can also occur in different planes at different speeds.
3. Due to this inside the wood, stress lines are formed, which further give rise to cracks.

Note!
As a rule, the board cracks along the fibers, starting from the end.
This is due to the least durable bonds between longitudinal fibers.

1. In addition to cracking, it is also possible transverse deformation Boards: The item is either strifted by the arc, or due to the uneven rise of the edges, the so-called "propeller" is formed. This behavior is explained simply: not all fibers dry at the same time, and therefore their length is reduced also differently.

As you can see, if used to build structures or manufacture different designs Wood with a high moisture content, over time, individual parts may be unusable. You can avoid this in one way - before the start of work, to prepare raw materials, drying it in one way or another.

Drying modes

The use of drying chambers allows to significantly reduce the time that is required to prepare lumber to work. At the same time, controlling the dehydration mode, we can control the operational properties of the material obtained.
To date, experts identify three drying modes:

Mode	Features
Soft	The temperature in the chamber rises gradually, due to which not only the natural strength of wood is preserved, but also its color. At the same time, the rate of dehydration of the raw material decreases somewhat.
Standard	Used to bring the material to ultimate humidity with almost complete safety. In this case, a slight change in the shade is possible.
Forced	Forced drying is used to make it possible to quickly prepare lumber to work. After high-temperature processing, the strength to bend, compression and stretching is preserved, but it can slightly decrease the strength to splitting. It is also possible to darkening the wood and the appearance of a characteristic smell.

Creating a drying chamber

Ready room

So, the thesis that lumber must be prepared for use by drying, we were argued. Now let's figure out how to make a dryer for boards with your own hands.

To begin with, we need to choose the room in which the drying process will occur:

1. Because the removal of moisture from wood requires significant energy costs, the area of \u200b\u200bthe dryer must be chosen on the basis of the planned volumes of the material..
2. The optimal height of the room is 2 - 2.5 m (so as not to bend). The width should allow the placement of one or two stacks of boards of 1.8 - 2 m with a passage between them.
3. Windows in the dryer are sure to lay brick. The doors are expanding so that we can freely load the material being processed.

Note!
For ventilation, either a small fortnight, or a product in which we will bring the air duct in the future.

1. If the drying of the boards is planned to be enough big room, it is advisable to make a separate jiggle in it. Partitions are erected from brick or a sufficiently thick bar to ensure thermal insulation.

Building dryers

However, find suitable room (Most often in this role, a garage or barn) is not always obtained.

That is why it will be useful to know how to make a dryer for boards from scratch:

1. Under construction laying a ribbon or foundation columnal. Since the mass of the structure is small, then we make a shallow basis.
2. After the basement concrete is driving, from an aluminum or steel galvanized profile we collect the framework. Frame details connect with bolts and special brackets.

Note!
Price aluminum structures Much higher, but at the same time they differ significantly greater corrosion resistance in a warm and wet environment.
So the use of more expensive bearing elements is fully justified.

1. Walls and roofs we are wearing steel sheets, which are fixed to the frame of metal self-proof (with a brown). For maximum efficiency, we perform a double trim, laying a layer of mineral wool insulation between metal sheets with a capacity of 100-150 mm.

1. On the floor laid a dense waterproofing membrane, which we fall asleep sawdust.
2. Install the doors that should be closed as close as possible. For additional sealing, you can strengthen door box Brussia with attached rubber sheets.
3. As in the case of using the ready-made premises, we definitely exercise ventilation products for air circulation.

After completing the work, we check the tightness of the room, if necessary, eliminating the defects of the trim. Now we have left to equip our drying chamber.

Note!
In a closed dryer, there should be no cracks that ensure the receipt of uncontrolled air flows.
This is due to the fact that the presence of the slightest draft can provoke uneven processing of boards, causing them cracking or deformation.

Equipment

Instructions for arranging the dryer may be the most different, because the camera is largely depends on both our requests and financial capabilities.

And yet the general scheme formulate quite real:

1. To begin with, we make supports to which boards stack will be installed. On the floor, it is fixed, allowing to lift the dried material about 10-15 cm above the floor level share of circulation in the lower layer of air.

1. Instead of supports you can use wall racks. At the same time, on the bearing surfaces, they fix the brackets made of metal, intended for laying the stacks along the walls of the drying chamber.

Note!
This option is most often used with temporary re-equipment under the dryer of the part of the economic building.

1. Next, install the heating device. It can be a furnace, a fireplace, heat gun, fan heater, etc. - It all depends on your preferences. Key parameter There will be a power of a device that is calculated on the basis of the volume of the loaded wood: for drying 1m3 boards, at least 3 kW of thermal energy is necessary, respectively, the more raw materials we need, the more powerful the device you need.
2. Together with heating devices, we establish the fans that will provide air movement. Of course, you can save on the purchase ventilation system And in this case, the time of preparation of boards to work will increase significantly, and therefore, the costs of heating the camera will increase.

1. Fans and heating appliances are located in such a way that the warm air will walk across the air flow. Such an installation allows you to significantly reduce the aerodynamic resistance of the system, so the dryer will work more efficiently.

Since the functioning of our chamber will require a large number of Electricity, it is desirable to bring a separate power cord. In this case, all the used aggregates connect to the distribution panel through the RCD with the corresponding power parmets. Such a precaution will not be superfluous, since the tree, not even completely dried, can light up from the slightest spark that appeared during the closure.

Tip!
It is also desirable to become automatic system Temperature and ventilation control.
It costs it quite expensive, but its use allows you to control the parameters of the inside of the dryer, thereby ensuring the maximum quality of wood treatment.

Using a dryer

If the drying chamber has been collected in all the rules, then it will be enough to use it. To do this, we put the boards with a stack, laying between the rows of BROs with a thickness of up to 20 mm, and load the stack in the dryer.

After that, we begin to change the temperature, gradually increasing the heating.

Drying circuits There are many, but novice masters worth using low-temperature mode, as providing maximum quality with the minimum risk of marriage:

1. Heating - raise temperatures up to 45 - 50 ° C at a speed of 5 - 70 per hour.
2. Excerpt - we save 50 0s for 5 hours.
3. Drying - reduce the moisture content of the tree from 30 to 8%, gradually increasing the temperature to 60 0s. This stage takes about 48 hours. I. exhaust ventilation turns on half of the power.
4. Air conditioning - I support the temperature at 600 ° C for another 12 hours. Ventilation should actively work.
5. Cooling to temperature ambient With heated and ventilation.

As a result, we must receive boards suitable for most types of carpentry and joinery.

Conclusion

As you can see, the dryer for the board is done quite simply (but must be recognized - with certain financial costs). At the same time, the use of this device allows you to get a large number of building raw materials, which, when buying, the manufacturer would cost much more expensive.

For more information with the technology of chamber drying wood, we advise everyone who interested this topic is interested in studying the video in this article.

Drying chambers for lumber are indispensable equipment in the production of wood-based billets. Before sending a tree to processing, it must be dried. Otherwise, the risk of deformation is significantly increasing, deterioration finished products. Drying is performed in special chambers when certain conditions. At the same time, many collect drying chambers with their own hands for use at home.

Not everyone knows exactly, why dry the tree before processing. Therefore, let's tell some nuances of this process.

1. For many centuries, wood acts as the main material in the manufacture of furniture.
2. The furniture was made from the forest, which was cut several years ago.
3. In the case of the use of raw, unpredied wood, the boards are rapidly succumbed, cracks are covered.
4. When drying, the tree is compressed, because the structures erected from the initially raw material can over time, lose the strength, geometry.
5. The raw tree is a great place to develop mold.
6. At the same time, excessively overwhelmed building materials are also bad, since such material actively absorbs moisture, increases in the amount due to swelling. Because to furniture, other structures there is an effect, reverse drying.

Drying is carried out in the drying chambers. At the same time, steam or hot air is fed to the surface of the sawn timber. This process occupies for a long time And costs the manufacturer quite expensive. In many ways, due to this, the furniture made on the basis natural wood, much more expensive than MDF, chipboard, etc.

The use of drying chambers allows to obtain the following lumber properties:

• Increased strength;
• Protection against the probability of change of forms;
• Preservation of primary sizes when applying;
• Increased service life, etc.

The task of the drying cameras is to increase qualitative characteristics Lumber. Therefore, drying is a mandatory stage of wood processing.

Features of the process

Different modes can be used for sawn timber. In their own hands, the temperature increases the temperature occurs in stages, which makes it possible to gradually remove excess moisture from the material.

The mode and features of the drying process in the chambers are determined taking into account the analysis of the following parameters:

• The breed of dried wood;
• Sizes of materials;
• Initial humidity rate;
• The humidity indicator to be achieved;
• Constructive and technological features of drying chambers used for processing;
• The quality category of the treated lumber.

Types of drying

Drying with their own hands Wood inside the chamber is two types:

• Low temperature;
• High temperature.

The high-temperature processing process is performed in two stages. The transition to the second stage occurs when the moisture of the workpiece decreases to 20 percent. This technology Actual when applying wood as materials for the construction of secondary structures.

Low-temperature mode is divided into three categories.

1. Soft drying. Here lumber retain their characteristics, properties. Therefore, the color changes or the product strength parameters is not observed.
2. Normal drying. Color may vary, but slightly. Strength parameters are somewhat reduced.
3. Forced drying. Performing the splitting or rocking of raw materials dried in forced mode, it can become fragile. Also changing color, wood becomes dark.

Sources of heat

Drying chambers can use different sources The heat whose task is to achieve the desired level of lumber moisture.

The following thermal sources are distinguished:

• Heated fertile;
• Radiant emitters;
• Heated racks;
• Electricity;
• High-frequency electromagnetic field.

The constructive chamber necessarily includes three components:

• Ventilation and exhaust system;
• Heat Salving Knot;
• Moisturizing system.

Dryers

Dryers differ in each other way of air traffic inside the chamber. Based on this parameter, the following varieties are distinguished:

• Systems with natural movement of air;
• Drying systems where the forced principle of air exchange is used.

Build your own hands simply systemwhere natural air exchange is used. In this case, the indicators of its effectiveness are significantly inferior to the forced circulation of air. For this reason, the chambers of a natural type are becoming more and less.

Dryers differ on the principle of their action. This is one of the main characteristics to be paid to when selecting drying equipment Or designing a drying chamber for its construction with your own hands.

1. Convective cameras. Inside them, lumber are blown by hot air flows. Heat transmission is carried out by convection method. Such dryers are divided into chamber and tunnels. The tunnel chamber assumes the loading of wood from one end and its unloading from the other. Gradually, moving on the dryer, the material acquires the necessary characteristics and parameters of humidity. The drying cycle in tunnel chambers is 4-12 hours, applied on large sawmills. The chamber of the dryer is characterized by compactness, an uniform microclimate is maintained within them throughout the chamber volume. Similar structures allow you to achieve the desired characteristics of lumber of different types. This led to the fact that the overwhelming majority of production, which are engaged in wood work, apply exactly chamber equipment.
2. Condensation chambers. Here moisture, which is distinguished from lumber, settles on the cooler, after which it accumulates inside a special container and is output. Similar drying devices are distinguished by an increased coefficient useful action. At the same time, the process of preparing wood takes quite a long time and impressive heat losses. The best condensation technology shows itself when preparing small batches of wood, which is characterized by increased hardness. The cost of the equipment itself and the cost of operation of condensation chambers makes it preferable compared with convective aggregates.

Choosing equipment for drying wood - the question is quite serious, requiring a detailed study technical characteristics Chambers themselves and features of the process of preparation of lumber to their further processing. Therefore, in case of questions, we recommend that you consult with experts.

Sometimes the manufacture of the dryer is preferable to buy factory equipment. But if you decide to assemble the device with your own hands, clearly adhere to the manufacturing technology. Violation of recommendations may entail unpleasant consequences For wood and invested in the manufacture of equipment equipment.

And the physical and mechanical properties are improved. If used unprepared wood, defects in the product can not be avoided: the moisture evaporates unevenly, which is why cracks, deformations, faults occur.

Wood drying methods

Previously, the drying of the sawn timber was carried out evaporating and paraffin, which made wood very durable and wear-resistant. Nowadays, these methods are practically not used, since modern technologies allow you to achieve an excellent result with much less costs.

Atmospheric, natural drying does not need special equipment, That is undoubted plus The method, but the drying period itself is enough, from several months to two years. With this method, wood is placed on open air, under a canopy or indoors with good ventilation. The blanks are stacked by stacks on special stands in such a way that the gaps for penetrating air flow remain.

As a rule, extreme boards dry faster and more often exposed to deformations, cracks may appear on the ends - all this should be considered when the wood harvesting.

The most effective is the chamber drying: different types cameras and process automation allow you to pick up optimal option drying wood breedsBut this method is used only on large or small industries.

The drying chamber for wood gives lumber with a certain degree of humidity, which cannot be achieved from other methods, but the process itself requires considerable energy and generally financial costs.

How to make the dryer with your own hands?

If there is an opportunity to use industrial drying, it is worth trying to build a drying chamber with your own hands.

Wood dryer do it yourself- Ability to achieve good results with minimal cash costs.

For construction, the dryer will be needed: aluminum profile, metal sheets, heat insulation, waterproofing, sawdust, thermal gun.

Stages of construction and use

Saving frame with aluminum sheets, installation door.

Laying thermal insulation thickness up to 15 cm.

I wicked the floor with waterproofing material and sawdust.

Check the tightness of the design and eliminate air leaks.

Staff support structure. In order to raise the bottom row of boards above the floor surface, the installation of supports from bars or other material is necessary.

Layout of boards indoors. The sawn timber is laid out by rows using strips from bars so that the air freely penetrates between the boards anywhere in the stack. You can upload boards to the ceiling.

Installation of fan heater or other heating equipment. Forced circulation The air contributes more rapid process Drying. The flow direction must be perpendicular to the location of the board.

Dryer for boards with their own hands ready!

There is another way to create a dryer with your own hands - inside the house or cottage. It is suitable for small lumber.

First, it will take room with a fireplace, a stove or electric car where the dryer will be located.

Then the partitions, doors and windows are installed. The tightness of the room should be perfect, otherwise the drafts and air flows can affect the quality of the drying. All cracks, gaps, holes are sealed with sealant, and the walls are tightened with insulation.

To maintain heat from the stove, you can set the room with bricks.

With insufficient circulation of warm air, a fan is installed.

For laying lumber are constructed metal shelves With reliable fasteners to avoid structural collapse. The boards themselves are located all by the same principle: even rows with intervals and gaskets from bars.

The drying chamber for the tree will improve the properties of wood, increase its strength and durability, that is, it will allow to get the most high-quality raw materials for construction.

Sources Photo: sawwood.ru, yugmassss.ru, zharbond.ru, makilplus.ru, dnepro.com.ua, house-lab.ru, hobbyblog.org, stroydrev.by, SUSHKADRevesiny.com, Saw-wood.com, Strport.ru

Buy materials for thermal insulation on DOM.BY.

Drying is a mandatory stage of wood preparation before processing. To make the logs are not deformed, they dry them under certain conditions that are created in the drying chambers. For a home workshop, you can make wood dryer with your own hands.

The importance of drying

Ancient times during the manufacture of wood products, a forest was used, searched several years ago. Furniture made of raw or incorrectly dried board is swinging either fuse and go cracked. Hyd, the material is compressed, the raw beams from the tree will eventually behave, and the cracks will appear with the palm of the width. Mold starts in raw wood. But the porched boards are bad - the material begins to absorb moisture, swells.

The drying is carried out by hot air or steam, the process is long and expensive, but it gives wood extra strength, warns a change in shape and sizes, lumber is longer stored.

Drying modes

There are several sawn drying modes. In the chambers made independently, the temperature rises in stages, withdrawing moisture from raw material. The drying technology is chosen taking into account:

• wood breed;
• lumber dimensions;
• finite and starting moisture;
• features of the dryer;
• quality categories of raw materials.

The drying process can be high-temperature or low-temperature. In the second case, the primary processing is carried out at a temperature that does not reach 100 degrees.

Low-temperature modes are divided into categories:

• soft - in the drying process, sawn timber retain all their properties, the strength and painting does not change;
• normal - the color changes slightly, the strength is slightly reduced;
• forced - when they are frowning and splitting, brittleness is possible, the color is darkened.

Changing the temperature of the medium at low temperature mode is occurring in three stages. The transition to the next step is possible when the wood of a given humidity is achieved.

High temperature processing is produced in two steps. The second stage comes with a decrease in the moisture content of raw materials up to 20%. Such technology is used in the preparation of wood for the construction of secondary structures, allowing to make a change in color and reduce strength.

Types of drying chambers

Drying of wood B. industrial scale Performed in special chambers. The moisture is excreted from lumber with heated air and is taken out to the street. The device occurs a full cycle of wood drying. The room may be:

• collectively metallic;
• erected from building materials.

The second are installed directly in the joinery shops or as the buildings standing apart. Walls make out reinforced concrete or brick. On the large enterprises shut up several cameras combined into the module with common system Control and loving communications. Air circulates in the dryer horizontally or vertically transversely. Wood in industrial dryers can be brought by rails on trolleys, laid out for forklifts.

Sources of heat in the dryer:

• hot couple;
• radiant heat from special devices;
• heated shelves of racks;
• electrotocks well passing through wet logs;
• high frequency electromagnetic field.

The camera is equipped with the main and additional equipment. The main consists of systems:

• supply-exhaust ventilation;
• heat supply;
• moisturizing.

Additional equipment is insulation of walls and doors, cartridges for laying material, psychometric equipment, electric drive.

Industrial dryers are automatically controlled, small homemade - manually. Humidity is regulated supply-exhaust ventilation and humidifiers. To measure humidity in the room there is a moisture meter that collects data simultaneously in several places.

As an energy source for air heating, it is possible to use: electricity, wood processing waste, liquid, solid fuel.

Types of dryers

According to the mode of air traffic, the camera is divided into:

• with natural;
• with forced air exchange.

Natural air exchange cameras are low, the process is not controlled in them. Therefore, they are still less.

According to the principle of operation, it is allocated:

• convective;
• condensation dryers.

In convective chambers, wood is blown by hot air flows, heat is transmitted by convection. They can be deep tunnel or chamber. In tunnel cameras, logs are loaded from one end and unloaded from the other, moving around the chamber, the material is gradually dried. The cycle duration ranges from 4 to 12 hours. Such cameras are installed on large sawmills. Chamber dryers are more compact, a single microclimate is supported throughout. Allowed to prepare any types of wood to the necessary condition. Therefore, most industrial chamber type dryers.

According to the technology of condensation drying, the moisture secreted from the material is deposited on the coolers, accumulates in the containers and merges the outside. The efficiency of such a device is very large, but the process is long, accompanied by high heat loss. The technology is good for the preparation of solid lumber with small batches. The price of equipment and the cost of condensation drying is lower than convective.

Arrangement of homemade dryer

In order to make the dryer with your own hands, you can do without drawings. It is necessary to provide:

• chamber room;
• insulation;
• heat source;
• fan.

The area of \u200b\u200bthe dryer, erected with their own hands, usually does not exceed 9 square meters. meters. In place of the square form it is easier to ensure the optimal movement of warm air. It is desirable that one wall of the camera is made of concrete slabs, Other of wood. All walls are insulated from within two layers: expanded polystyrene foam and foil board. Beautiful and free insulation - wood shavings. And the foil can be replaced with foam, perfectly reflective heat.

A separate room of the dryer can be built of aluminum, such a structure will last long. Frame is performed from the profile, it is trimmed sheet metalwhich is instead outside. The thickness of the insulation is at least 15 cm. The floor is covered with rubberoid, a thick layer of chips pour over the thermal insulation.

It is necessary to take care of thorough sealing of the entrance door!

Heat emitter can be made in the form of pipes or heating radiators. The water temperature must be 65-95 degrees. It is heated by an electrical man, wood stove, gas boiler. For a small chamber, even two-component electric stoves. If the furnace is directly indoors, you need to put it with bricks. Brick will accumulate heat and gradually radiate it into the dryer. It is easy to equip a convective camera with your own hands, installing a fan heater as a heat source.

Having drawn the dryer for a domestic woodworking workshop, it is important to comply with fire safety measures. Near the building should always be a fire extinguisher.

The constant circulation of warm water is important, which is provided by the pump. So that the heat is evenly distributed on the room, the fan is installed. The work room is equipped with a wet and dry thermometer.

For the convenience of downloading the board to the camera, you can use the trolley on the rails. And to increase useful Square Racks are built on the walls.

Step-by-step instruction looks like this:

1. Construct the foundation.
2. We build a framework.
3. We are cutting with metal sheets.
4. Installation of thermal insulation.
5. We drag the floor with a film and sawdust.
6. Installation of supports from bars.
7. Installation of heaters and fans.

The design of the homemade chamber for drying sawn timber in the video: