JPS59129373A - Method and device for drying wood - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drying method and apparatus suitable for use in drying wood.

Traditionally, it is used for building houses and is shipped after undergoing a drying process and a chemical treatment process. This is to prevent raw wood from containing a large amount of moisture, which will cause distortion and shatter when used for construction.
It is necessary to dry it beforehand. In addition, the chemical agent treatment process is used to kill insect eggs, especially since many imported materials have insect eggs attached to them, and to prevent damage caused by insect ingestion after construction. All of these methods are essential for shipping next month as construction products, but the conventional methods have various drawbacks.

That is, since the drying process is usually carried out by natural drying, it takes a long period of time, about 3 to 5 years. This is because not only is it time-consuming because the orientation and top and bottom of the wood must be changed, but when drying naturally, it is likely to become distorted when it absorbs moisture again. In addition, in the chemical treatment process, usually only an ovicidal chemical is applied, and although eggs attached to the surface can be killed, eggs laid inside the wood must also be treated. This is because the wood was eaten by insects after construction.

Furthermore, as mentioned above, the drying process and chemical agent treatment process are
Since the contents of the work are completely different, it is necessary to perform these steps separately on the aqueous phase, which increases the number of T and leads to a disadvantageous increase in cost.
There was a request for the development of a device a that could perform necessary treatments such as egg killing.

The present invention has been made in view of the shortcomings of the prior art described above, and the method is structured such that the wood to be dried is stored in a nearly sealed house, hot air is sent into the room, and By circulating cold air through the lower part of the wood to condense moisture from the aqueous phase, the special mission was to dry the wood irreversibly. A door that is attached to one end of the chamber and has an opening for intake of cold air at the bottom, and a heat source disposed at the other end of the chamber. It is characterized by:

Next, embodiments of the present invention will be described with reference to the drawings.

(1) is an oval node-shaped chamber with a diameter that is large enough to accommodate the aqueous phase (, W ) to be dried, and (2) is a room with sleepers (3
), and (4) is a trolley running on the rail, which carries the wood (W) to be dried.
By placing an appropriate number of them on the trolley (4) and running the trolley (4) on the rails (2), they can be freely taken in and out of the chamber (1), and the aqueous phase (W) can be taken out of the chamber ( 1) It is sliding so that the position inside can also be adjusted.

5) is the front group attached to the rail (2) side of the room (1), (6) u is the rear door attached to the opposite side of the room (1), and the lower part of the front group (5) is the Avoiding the rails (2), sleepers, and (3), and directing cold air from outside the room (1) to the room (
1) An opening (7) is provided for flow inside.

(8) A pot serving as a heat source is placed at the rear end of the chamber (1). Flexible pot door (9)
It consists of a combustion part 01 formed in front of the pot door (9), and if wood or the like is appropriately thrown into the combustion part Oq from the upper part (9a) of the pot door (9) and burned, the The hot air generated by combustion passes through the zigzag-shaped flow path formed by the three partition plates (n) set up in front of the pot (8) in the chamber (1). Since air (e, element) is consumed during combustion, the cold air outside the chamber (1) is used as cold air to pass through the opening (7) of the front group (5) and the central partition plate (12). Open the opening C4) at the bottom of the pot (8).
The above (1) to H constitute an example of the device of the present invention as +ilf.

On the other hand, the method of the present invention is implemented as follows using, for example, the apparatus configured as described above.

In other words, if you burn wood, etc. in the combustion section (IQ) of the pot (8) without cutting, the hot air from the combustion will flow through the three partition plates (7/).
(/,?) (r)) flows into the water phase (W) side of the chamber (1), and soon it is filled with hot air.
The aqueous phase (W) to be dried placed on the trolley (4) is moved along the rail (2) along with the l.rosoco (4) to the chamber (
]), and by doing this, not only will the water in the wood +J (W) be evaporated by the hot air, but the conduit will also become irreversibly dry.

As the wood) 11 (W) dries, the hot air at the top of the chamber (1) will contain a large amount of water vapor, but the
The combustion part (when wood, etc. burns in IQ, two doors (6)
(9) is closed, the air required for combustion is supplied as cold air from the opening (7) at the bottom of the front group (5) through the entire bottom of the chamber (1). When the hot air containing a large amount of water vapor comes into contact with the cold air, the water vapor condenses into water droplets that travel along the inner wall of the chamber (1) and stay in the lower part of the chamber (1), thereby efficiently drying the wood.

When wood is actually dried using the above-mentioned method of the present invention, the required processing time varies depending on the size of the wood (W), moisture content, etc. For drying, it was enough to dry it in one day or one day early, and for drying in the lower tier, it was enough to dry it in 3 to 4 days.Also, the time required for this drying depends on the position of the trolley (4) in the chamber (1). Also, the pot (
8), there was a difference of about 1 day between cases near and far.

The wood (W) obtained by drying as described above is
1 in 15 items had an average moisture content of 60% before drying.
Moreover, since the conduit is irreversibly dried and crushed, no distortion will occur even if moisture is applied again.

In addition, the dried wood grains are treated for several tens of hours in the air at 200°C in the cylinder, so that not only the insect eggs that land on the surface but also the eggs that are laid inside are killed. Since egg removal completely kills eggs, damage from insect eating can be completely prevented.

A close examination of the wood after drying in VC1 reveals that the tar contained in the hot air penetrates not only the surface but also the inside of the wood and sterilizes it. This invention has the special effect of preventing the growth of mold over time.The present invention is as described above. It is extremely excellent as a drying method and device for water conservation because it can simultaneously perform ovicidal and sterilizing processes in the first step that reaches the interior.

[Brief explanation of the drawing]

Claims (1)

[Claims] l By storing the wood to be dried in a substantially sealed room, blowing hot air into the room, and circulating cold air in the lower part of the room to condense moisture from the wood, 17. A method for drying wood, characterized in that the wood is irreversibly dried. 2. A chamber to house the wood to be dried, a door attached to one end of the chamber and provided with an opening at the bottom for the intake of cold air, and a heating section disposed at the other end of the chamber. A wood drying device characterized by comprising: