Chamber drying of wood for the furniture Builder

An overview of Chamber drying of wood for the furniture Builder.

As a furniture Builder, you are proud of your work and not satisfied until the customer is satisfied. Complete control from concept to completion is important.

The further, suppose, you have access to a good level of wood and are ready to start the trees fall. What do you with everything, what fresh cut wood? You must dry it before aside to set it for projects. This is where Chamber drying comes into play.


The handling of material in cells there are two different types. One way is the load of lumber in a Chamber where it remains in the same place during the operation, while the conditions of the medium are drying in the course of drying different place. This is the "home" kiln or stationary method.

The other is the lumber in at one end of the Chamber on a cart and slowly move it through, until the drying is completed when it is extracted from the kiln. It is common in these furnaces to one end of the humid Chamber and the other end to keep dry. This is known as "progressive" type of kiln and is most often used in large operations.

However, it is the least satisfactory of the two, where careful drying is required because the conditions can be regulated not as good and the temperature and humidity are apt to change every time the wind.

The apartment method can be arranged so that it space or another treatment of lumber as the progressive nature requires no longer kiln. Demand it, but more accurate operation, because the conditions have to be changed in the drying chamber in the course of drying. With the progressive way, the conditions remain once properly set up, the same.

Three methods are placed to get design or circulation of air or a fan in General outside the kiln, ventilation and internal circulation and condensation. Unfortunately, not all systems for the movement of air as intended can work.

Often moves the air in the opposite direction for which fans have been designed. Sometimes uses a capacitor in consultation with the blower, and the air is recirculated. And the soft internal gravity currents of air, it will also, and more satisfactory.

Many patents for heating systems were out. The differences between these however have more to do the mechanical design than with the process of drying. In General, the heater is either directly or indirectly. Be brought in the former steam coils in the Chamber with the wood, and in the latter the air by steam coils or an oven are heated, before it is introduced into the drying chamber.

Moisture is sometimes supplied by steam nozzles in the kiln or the entering air; but more often the moisture evaporates from wood moisture necessary keep is abandoned.

A substance is dry through the evaporation of its inherent moisture into the surrounding area. If this space is limited, it is soon saturated and stops the process. Therefore, constant change is necessary, so that the moisture is released, can be carried away continuously.

In practice, the air movement is therefore absolutely necessary to the process of drying. Heat is just a handy bi product that serves to reduce the time of drying by increasing the rate of evaporation and the absorbing power of the surrounding space.

It makes no difference whether this space a vacuum or filled with air. If the temperature in the narrow space is increased opportunity and thus provided for the evaporation of more water, but if it reduces its capacity for moisture falls and water will condense on the surface of the wood.

The temperature at which this takes place is known as the "dew point" and depends on the initial degree of saturation of the given room; the less the relative saturation the lower the dew point.

Dried carefully stacking of the wood, both in the courtyard and dry kiln, is important, good results in the drying process.

Air-dried material is not dry and the humidity is also unevenly distributed, to insure good behaviour after production.

It is quite a difficult matter, specific or absolutely correct weights all types of wood in the thoroughly or properly dried to give. A large Dealdepends are dried to the type of wood, its density, and to the thickness that it has been cut and its condition when entering the drying chamber.

Elm will weigh less naturally than beech, and where the wood is pin wooden or compact, it weighs more than rough wood of the same species, and therefore no fixed rules can be set good judgment should only be used, as the building inspections of the drying time none is pure.

Sometimes sensitive process gives excellent results of the time, while large amounts of material from the kiln rush wood can this sub standard quality, there is no satisfaction in the finished product is worked.

The mistreatment of the material in this respect leads many shortcomings. How secure that distort and twist, checking case and honeycombing. Or as sometimes mentioned is, hollow Horning.

Efficiency of drying hang strong by the way that the wood is piled up, especially if humidity is not regulated. From the theory of drying, it is obvious that the rate of evaporation in dry kilns, where the humidity is not regulated, on the rate of circulation just depends all other things.

Therefore, those parts of the wood drying, which get quickly and vice versa the largest amount of air the most. The only way, so that everything such as uniform drying can take place, where the timber is stacked so that every part of it comes in contact with the same amount of air.

In an oven forestry service, where the degree of humidity is used to control the rate of drying, the amount of traffic makes little difference, if it exceeds a certain amount. It is desirable, stacking the wood so that as little friction as possible and in the same time secure uniform circulation offer. If excessive traffic at any place it simply means waste of energy, but no other injuries, the lumber.

The best way accumulation is one, which pass through the heated air allows the pile in a slightly downwards. To descend the natural tendency of the cooled air is thus used in supporting the circulation in the kiln. This is introduced particularly important if it is cold or green wood first in the kiln. But even if the wood is heated, cooling through evaporation has increased the density of the mixture of air and steam.

If a furniture manufacturer is determined to control the production of their pieces from the very beginning, until the completion is proposed that furniture manufacturers to invest in the plant to harvest and properly dry Woods. Only in this way, you can ensure 100% control.