JP2017019211A - Treatment method and treatment apparatus of lumber - Google Patents

Treatment method and treatment apparatus of lumber Download PDF

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JP2017019211A
JP2017019211A JP2015139308A JP2015139308A JP2017019211A JP 2017019211 A JP2017019211 A JP 2017019211A JP 2015139308 A JP2015139308 A JP 2015139308A JP 2015139308 A JP2015139308 A JP 2015139308A JP 2017019211 A JP2017019211 A JP 2017019211A
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container
wood
water
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JP6650594B2 (en
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森 健次
Kenji Mori
健次 森
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Panasonic Intellectual Property Management Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a treatment method and treatment apparatus of lumber capable of effectively suppressing cracks of treated lumber.SOLUTION: In a treatment method of lumber, lumber to be treated is submerged in water in a vessel and subjected to high temperature and pressure in the vessel. The treated lumber kept submerged in water is subjected to depressurizing to atmospheric pressure or less and cooling in the vessel.SELECTED DRAWING: Figure 1

Description

本発明は、被処理木材を高圧高温下で処理する木材処理方法及び木材処理装置に関する。   The present invention relates to a wood treatment method and a wood treatment apparatus for treating wood to be treated under high pressure and high temperature.

従来より、フリッチ材等の被処理木材を、容器内において高圧高温下で処理する木材処理方法が知られている。このような木材処理方法においては、高圧高温下で処理した後に冷却する必要があるが、急激に圧力を降下させれば、処理された木材内部の水分が急激に沸騰・気化して木材が急激に乾燥し、割れが生じ易くなることが考えられる。
例えば、下記特許文献1には、木材を高圧蒸気釜内部において高圧蒸気処理した後、水を供給して木材を水没させてから降温降圧処理する方法の開示がある。
2. Description of the Related Art Conventionally, there is known a wood treatment method for treating wood to be treated such as a flitch material in a container under high pressure and high temperature. In such a wood treatment method, it is necessary to cool after treating under high pressure and high temperature. However, if the pressure is suddenly lowered, the water inside the treated wood suddenly boils and vaporizes, causing the wood to rapidly It is conceivable that the material is dried and cracking is likely to occur.
For example, Patent Document 1 below discloses a method of performing a temperature lowering and pressure reducing process after supplying wood with water and submerging the wood after the wood has been subjected to high pressure steam treatment inside the high pressure steam kettle.

特開2009−285875号公報JP 2009-285875 A

しかしながら、上記特許文献1に記載されたような方法では、高圧の蒸気釜内に、木材を水没させるための水を供給する必要があるため、加圧した水を供給する必要があり、更なる改善が望まれる。   However, in the method as described in Patent Document 1, it is necessary to supply water for submerging the wood into the high-pressure steam kettle. Improvement is desired.

本発明は、上記実情に鑑みてなされたものであり、処理後の木材の割れを効果的に抑制し得る木材処理方法及び木材処理装置を提供する。   This invention is made | formed in view of the said situation, and provides the wood processing method and wood processing apparatus which can suppress the crack of the wood after a process effectively.

上記目的を達成するために、本発明に係る木材処理方法は、被処理木材を、容器内において水に浸漬させた状態で前記容器内を昇圧昇温させて高圧高温下で処理した後、該処理後の木材を、水に浸漬させた状態で前記容器内を大気圧以下に降圧して冷却することを特徴とする。   In order to achieve the above object, the wood treatment method according to the present invention comprises treating the treated wood under high pressure and high temperature by increasing the temperature in the container while being immersed in water in the container, The treated wood is cooled by lowering the pressure inside the container below atmospheric pressure in a state where the wood is immersed in water.

また、上記目的を達成するために、本発明に係る木材処理装置は、被処理木材を浸漬させる水を溜水可能な容器と、前記容器内において前記被処理木材を水に浸漬させた状態で前記容器内を昇圧昇温させた後に、該処理後の木材を水に浸漬させた状態で前記容器内を大気圧以下に降圧させる制御を実行する制御部と、を備えていることを特徴とする。   In order to achieve the above object, a wood treatment apparatus according to the present invention includes a container capable of storing water in which treated wood is immersed, and the treated wood is immersed in water in the container. And a controller that performs control to lower the pressure in the container below atmospheric pressure in a state where the treated wood is immersed in water after increasing the pressure inside the container. To do.

本発明に係る木材処理方法及び木材処理装置は、上述のような構成としたことで、処理後の木材の割れを効果的に抑制することができる。   Since the wood processing method and the wood processing apparatus according to the present invention are configured as described above, it is possible to effectively suppress cracks in the wood after the processing.

本発明に係る木材処理方法の一例を模式的に示す概略フローチャートである。It is a schematic flowchart which shows typically an example of the wood processing method which concerns on this invention. (a)、(b)は、いずれも同木材処理方法を実行する本発明に係る木材処理装置の一例を模式的に示し、(a)は、同木材処理装置の一例を含むシステム構成の一例を模式的に示す概略側面図、(b)は、概略縦断面図である。(A), (b) shows typically an example of the wood processing apparatus which concerns on this invention which performs the same wood processing method, (a) is an example of the system structure containing an example of the same wood processing apparatus Is a schematic side view schematically showing (b), and (b) is a schematic longitudinal sectional view. (a)、(b)は、同木材処理装置の変形例をそれぞれ模式的に示す概略縦断面図である。(A), (b) is a schematic longitudinal cross-sectional view which shows typically the modification of the same wood processing apparatus, respectively. 同木材処理方法を用いた実施例と比較例とを評価試験の結果とともに示す表である。It is a table | surface which shows the Example and comparative example using the same wood processing method with the result of an evaluation test.

以下に本発明の実施の形態について、図面に基づいて説明する。
なお、以下の実施形態では、本実施形態に係る木材処理装置を設置した状態を基準として上下方向等の方向を説明する。
Embodiments of the present invention will be described below with reference to the drawings.
In the following embodiments, directions such as up and down directions will be described with reference to a state in which the wood processing apparatus according to the present embodiment is installed.

本実施形態に係る木材処理装置1は、図2に示すように、被処理木材2を浸漬させる水を溜水可能な容器10を備えている。また、木材処理装置1は、容器10内において被処理木材2を水に浸漬させた状態で容器10内を昇圧昇温させた後に、処理後の木材(処理木材)2Aを水に浸漬させた状態で容器10内を大気圧以下に降圧させる制御を実行する制御部17を備えている。   As shown in FIG. 2, the wood treatment apparatus 1 according to the present embodiment includes a container 10 capable of storing water in which water to be treated 2 is immersed. In addition, the wood treatment apparatus 1, after raising the temperature inside the container 10 with the treated wood 2 immersed in water in the container 10, dipped the treated wood (treated wood) 2 </ b> A in water. The control part 17 which performs control which pressure | voltage-falls the inside of the container 10 below to atmospheric pressure in the state is provided.

被処理木材2としては、長尺角柱状とされたフリッチ材としてもよい。この被処理木材2は、種々の樹種としてもよく、例えば、オーク等の比較的に乾燥によって割れが生じ易い樹種としてもよい。また、この被処理木材2の長さ、厚さ及び幅寸法は、加熱処理後や集成後になされる研磨等による寸法調整を考慮して適宜、設定された寸法としてもよい。なお、被処理木材2としては、長尺角柱状とされたものに限られず、平板状とされたものや、その他、種々の形状とされたものとしてもよい。   The treated wood 2 may be a flitch material having a long prismatic shape. The wood to be treated 2 may be various tree species, for example, a tree species such as oak that is relatively easily cracked by drying. Further, the length, thickness, and width of the wood 2 to be treated may be appropriately set in consideration of dimensional adjustment by polishing or the like performed after heat treatment or after assembly. In addition, as the to-be-processed timber 2, it is not restricted to the thing made into the elongate prismatic shape, It is good also as what was made into flat form and various shapes.

容器10は、耐圧性を有しており、図2(a)に示すように、一方向に開口する横長円筒形状の容器本体11と、この容器本体11の開口を密閉するように閉止する開閉蓋12と、を備えている。また、本実施形態では、木材処理装置1を、容器10内に収容され、被処理木材2を浸漬させる水を溜水可能な水槽18を備えた構成としている。この水槽18は、上方に向けて開口する箱状とされている。また、水槽18は、耐熱性を有し、比較的に熱伝導率が高い材料から形成されたものとしてもよい。
容器本体11には、被処理木材2を収容した水槽18が載置されるプレート状の載置部が設けられている。図例では、この載置部を、ローラー13を介して出し入れ自在とした例を示している。
開閉蓋12は、適宜の緊締手段によって、容器本体11を気密的に封止し、かつ容器本体11に対して着脱自在または開閉自在とされている。
The container 10 has pressure resistance, and as shown in FIG. 2A, a horizontally long cylindrical container body 11 that opens in one direction, and an opening and closing that closes the opening of the container body 11 so as to be sealed. And a lid 12. In the present embodiment, the wood processing apparatus 1 is configured to include a water tank 18 that can be stored in the container 10 and can store water in which the wood 2 to be treated is immersed. The water tank 18 has a box shape that opens upward. The water tank 18 may be formed of a material having heat resistance and relatively high thermal conductivity.
The container main body 11 is provided with a plate-like placement portion on which the water tank 18 containing the wood to be treated 2 is placed. In the example shown in the figure, the mounting portion is freely inserted and removed via a roller 13.
The opening / closing lid 12 hermetically seals the container main body 11 by appropriate fastening means, and is detachable from the container main body 11 or freely openable / closable.

この容器10(本実施形態では、水槽18)は、図2(b)に示すように、複数本の被処理木材2の収容が可能とされている。例えば、容器本体11の長手方向に長手方向を沿わせるように複数本の被処理木材2を配するようにしてもよい。図例では、水槽18内に複数本の被処理木材2を複数列状に横並びに配し、かつ複数段状に積み重ねるように配した例を示している。また、隣り合う被処理木材2同士の間に隙間が形成されるように配した例を示している。また、図例では、複数本の被処理木材2を、横方向に間隔を空けてかつ上下方向に桟部材3を介在させて配した例を示している。また、最下段の被処理木材2と水槽18の底面との間にも、桟部材3を介在させた例を示している。なお、容器10(水槽18)における被処理木材2の配置態様は、このような態様に限られず、その他、種々の変形が可能である。   As shown in FIG. 2B, the container 10 (in this embodiment, the water tank 18) can accommodate a plurality of wood to be treated 2. For example, a plurality of wood to be treated 2 may be arranged so that the longitudinal direction of the container body 11 extends along the longitudinal direction. In the illustrated example, a plurality of treated woods 2 are arranged side by side in a plurality of rows in the water tank 18 and are stacked in a plurality of stages. Moreover, the example arrange | positioned so that a clearance gap may be formed between adjacent to-be-processed timber 2 is shown. Moreover, in the example of a figure, the example to which the to-be-processed timber 2 was distribute | arranged at intervals in the horizontal direction and the crosspiece member 3 interposed in the up-down direction is shown. Further, an example is shown in which a crosspiece member 3 is interposed between the lowermost treated wood 2 and the bottom surface of the water tank 18. In addition, the arrangement | positioning aspect of the to-be-processed wood 2 in the container 10 (water tank 18) is not restricted to such an aspect, In addition, various deformation | transformation are possible.

また、本実施形態では、図2(a)に示すように、容器10内を昇圧昇温するために高圧高温水蒸気を容器10内に供給する高圧高温水蒸気供給源15を設けている。図例では、容器本体11の下部に、高圧高温水蒸気供給源15からの高圧高温水蒸気を容器10内に供給する水蒸気供給管を接続した例を示している。この水蒸気供給管は、容器10内において水槽18に溜められた水中において開口させずに、水槽18の下方側等において開口させた構成としてもよい。また、容器10内の複数箇所において開口させた態様としてもよい。また、高圧高温水蒸気供給源15としては、高圧ボイラー等としてもよい。また、容器本体11の下部には、液化した水蒸気等を容器10内から排出するドレン管や排水管等が接続されている。ドレン管には、スチームトラップやフィルタ等が設けられている。   Further, in the present embodiment, as shown in FIG. 2A, a high-pressure and high-temperature steam supply source 15 that supplies high-pressure and high-temperature steam into the container 10 is provided in order to raise the temperature inside the container 10. In the illustrated example, a steam supply pipe for supplying high-pressure and high-temperature steam from the high-pressure and high-temperature steam supply source 15 into the container 10 is connected to the lower portion of the container body 11. The water vapor supply pipe may be configured to be opened on the lower side of the water tank 18 or the like without being opened in the water stored in the water tank 18 in the container 10. Moreover, it is good also as an aspect opened at several places in the container 10. FIG. The high pressure / high temperature steam supply source 15 may be a high pressure boiler or the like. In addition, a drain pipe, a drain pipe, and the like that discharge liquefied water vapor and the like from the container 10 are connected to the lower portion of the container body 11. The drain pipe is provided with a steam trap, a filter, and the like.

また、容器本体11の上部には、給水元14からの水を容器10内に供給する給水管が接続されている。給水元14としては、給水タンクや水道管等としてもよい。また、この給水管は、容器10内の水槽18に給水可能なように設けられている。
また、容器本体11の上部には、容器10内を減圧する真空発生源16に接続された吸引管が接続されている。この真空発生源16としては、真空ポンプとしてもよく、エジェクタ装置等としてもよい。また、容器本体11の上部には、容器10内からの水蒸気乃至はガスを排出する排気管等が接続されている。
これら各管路には、開閉弁(ON/OFF弁)がそれぞれに設けられている。
なお、容器10には、容器10内の温度を測定する温度センサーや、圧力を測定する圧力センサー等が設けられている。
Further, a water supply pipe for supplying water from the water supply source 14 into the container 10 is connected to the upper portion of the container body 11. The water supply source 14 may be a water supply tank or a water pipe. Further, this water supply pipe is provided so as to supply water to the water tank 18 in the container 10.
Further, a suction pipe connected to a vacuum generation source 16 that decompresses the inside of the container 10 is connected to the upper portion of the container body 11. The vacuum generation source 16 may be a vacuum pump or an ejector device. Further, an exhaust pipe for discharging water vapor or gas from the inside of the container 10 is connected to the upper portion of the container body 11.
Each of these pipelines is provided with an open / close valve (ON / OFF valve).
The container 10 is provided with a temperature sensor that measures the temperature in the container 10, a pressure sensor that measures pressure, and the like.

制御部17は、上記した高圧高温水蒸気供給源15や真空発生源16、各開閉弁等に信号線等を介して接続されており、これらを作動制御する構成とされている。
この制御部17には、例えば、CPU等の制御回路や、メモリ等によって構成され、後記する基本動作例を含む各種動作プログラム等を記憶する記憶部等が設けられている。
この制御部17によって後記する基本動作(本実施形態に係る木材処理方法)の実行がなされる。
The control unit 17 is connected to the above-described high-pressure and high-temperature steam supply source 15, the vacuum generation source 16, each on-off valve and the like via a signal line or the like, and is configured to control the operation thereof.
The control unit 17 includes, for example, a control circuit such as a CPU, a memory, and the like, and a storage unit that stores various operation programs including basic operation examples described later.
The control unit 17 executes a basic operation (a wood processing method according to the present embodiment) which will be described later.

本実施形態に係る木材処理方法は、図1に示すように、被処理木材2を、容器10内において水に浸漬させた状態で容器10内を昇圧昇温させて高圧高温下で処理する構成とされている。また、同木材処理方法は、被処理木材2を高圧高温下で処理した後、この処理木材2Aを、水に浸漬させた状態で容器10内を大気圧以下に降圧して冷却する構成とされている。また、本実施形態では、同木材処理方法は、容器10内に高圧高温水蒸気を供給して容器10内を昇圧昇温させて高圧高温下で被処理木材2を処理する構成とされている。   As shown in FIG. 1, the wood treatment method according to the present embodiment is configured such that the treated wood 2 is heated at high pressure and high temperature by increasing the temperature in the container 10 while being immersed in water in the container 10. It is said that. Further, the wood treatment method is configured such that after the wood 2 to be treated is treated under high pressure and high temperature, the treated wood 2A is cooled down by reducing the pressure inside the container 10 to below atmospheric pressure while being immersed in water. ing. In the present embodiment, the wood treatment method is configured to supply the high-pressure and high-temperature steam into the container 10 to raise the temperature inside the container 10 to increase the temperature and to treat the wood 2 to be treated under high pressure and high temperature.

以下、同木材処理方法の具体的工程の一例について説明する。
まず、容器10内に、上記したように被処理木材2が配置された水槽18を収容させ、水槽18に水を供給し、容器10内において被処理木材2を水に浸漬させた状態とする(ステップ100)。つまり、本実施形態では、容器10内の水槽18内において被処理木材2を水に浸漬させるようにしている。この際、給水元14に接続された給水管の開閉弁を水槽18内が所定の満水レベルになるまで開放させて給水するようにしてもよい。
また、水に浸漬された被処理木材2を、水没させた状態とする浮き上がり防止部材を設けるようにしてもよい。例えば、浮き上がり防止部材としての重しや適宜の桟等によって被処理木材2を上方側から押さえつけるような態様としてもよく、また、浮き上がり防止部材としての金属製籠やワイヤー等によって被処理木材2を拘束するような態様としてもよい。
Hereinafter, an example of a specific process of the wood treatment method will be described.
First, the water tank 18 in which the treated wood 2 is disposed as described above is accommodated in the container 10, water is supplied to the water tank 18, and the treated wood 2 is immersed in water in the container 10. (Step 100). That is, in this embodiment, the to-be-processed wood 2 is immersed in water in the water tank 18 in the container 10. At this time, water may be supplied by opening an open / close valve of a water supply pipe connected to the water supply source 14 until the water tank 18 reaches a predetermined full water level.
Moreover, you may make it provide the floating prevention member which makes the to-be-processed wood 2 immersed in water the state immersed in water. For example, the wood 2 to be treated may be pressed from above by using a weight as a lifting prevention member, an appropriate crosspiece, or the like, and the wood 2 to be treated by a metal rod or wire as a lifting prevention member. It is good also as an aspect which restrains.

また、被処理木材2を浸漬させる水としては、水道水(清水)としてもよいが、寸法安定化成分を溶解させた水溶液を用いるようにしてもよい。このような構成とすれば、被処理木材2に寸法安定化成分を含浸させることができ、寸法安定化処理がなされた処理木材2Aを得ることができる。これにより、処理木材2Aの割れをより効果的に抑制することができる。また、寸法安定化成分を溶解させた水溶液が高温になることから粘度が低下するため、より効果的に寸法安定化成分を木材に含浸させることができる。特に、後記するように高圧高温水蒸気を間欠的に供給する態様とすれば、圧力変化によって寸法安定化成分をより効果的に木材に含浸させることができる。   Moreover, as water in which the to-be-processed wood 2 is immersed, tap water (fresh water) may be used, but an aqueous solution in which a dimension stabilizing component is dissolved may be used. If it is set as such a structure, the to-be-processed wood 2 can be impregnated with the dimension stabilization component, and the treated wood 2A in which the dimension stabilization process was made can be obtained. Thereby, the crack of 2A of process timber can be suppressed more effectively. Moreover, since the viscosity is lowered because the aqueous solution in which the dimension stabilizing component is dissolved becomes high temperature, it is possible to more effectively impregnate the wood with the dimension stabilizing component. In particular, when the high-pressure and high-temperature steam is intermittently supplied as described later, the dimensional stabilizing component can be more effectively impregnated into the wood by the pressure change.

上記寸法安定化成分としては、例えば、ポリエチレングリコール(PEG)や、ポリエチレングリコールモノメタクリレート(PEGMA)等としてもよく、種々の寸法安定化成分を採用するようにしてもよい。また、水溶液中に含まれる寸法安定化成分の濃度は、処理木材2Aの寸法安定化を図る観点等から適宜、設定するようにしてもよく、例えば、0.5%〜50%程度としてもよい。また、この水溶液は、給水元14から直接的に供給される態様としてもよく、または、水槽18内において溶解させる態様としてもよい。   Examples of the dimension stabilizing component include polyethylene glycol (PEG) and polyethylene glycol monomethacrylate (PEGMA), and various dimension stabilizing components may be employed. In addition, the concentration of the dimension stabilizing component contained in the aqueous solution may be set as appropriate from the viewpoint of achieving dimension stabilization of the treated wood 2A, and may be, for example, about 0.5% to 50%. . The aqueous solution may be supplied directly from the water supply source 14 or may be dissolved in the water tank 18.

次いで、密閉された容器10内において被処理木材2を水に浸漬させた状態で、容器10内に高圧高温水蒸気を供給して容器10内を昇圧昇温させる加熱処理工程を実行する(ステップ101)。この際、水蒸気供給管、ドレン管及び排気管の開閉弁を開放させ、他の開閉弁を閉鎖した状態で、容器10内の空気を水蒸気に置換した後に、排気管の開閉弁を閉とし、昇圧昇温させるようにしてもよい。
また、この加熱処理工程においては、容器10内が所定の温度となるように高圧高温水蒸気を供給するようにしてもよい。また、容器10内の水温が所定の温度となるように高圧高温水蒸気を供給するようにしてもよい。
この加熱処理工程における目標となる処理温度(容器10内の雰囲気温度)は、105℃以上としてもよく、例えば、この処理温度を、105℃〜160℃程度、好ましくは120℃前後としてもよい。
Next, in a state where the treated wood 2 is immersed in water in the sealed container 10, a heat treatment process is performed in which high-pressure high-temperature steam is supplied into the container 10 to raise the temperature inside the container 10 (step 101). ). At this time, the steam supply pipe, drain pipe and exhaust pipe open / close valves are opened, and the other open / close valve is closed, and after the air in the container 10 is replaced with water vapor, the exhaust pipe open / close valve is closed, You may make it raise pressure | voltage rise and temperature.
In this heat treatment step, high-pressure high-temperature steam may be supplied so that the inside of the container 10 has a predetermined temperature. Moreover, you may make it supply high pressure high temperature steam so that the water temperature in the container 10 may become predetermined | prescribed temperature.
The target processing temperature (atmosphere temperature in the container 10) in this heat treatment step may be 105 ° C. or higher. For example, the processing temperature may be about 105 ° C. to 160 ° C., preferably about 120 ° C.

また、本実施形態では、容器10内に高圧高温水蒸気を間欠的に供給する構成としている。高圧高温水蒸気を間欠的に供給する態様としては、例えば、所定時間が経過する毎に、所定量の高圧高温水蒸気を供給するようにしてもよい。また、例えば、容器10内の圧力(実測圧力値)が所定値を下回れば、所定量の高圧高温水蒸気を供給するようにしてもよい。この場合、加熱処理工程の初期の昇圧工程では、予め設定された所定傾きの昇圧時目標設定圧力値から所定値を下回れば、所定量の高圧高温水蒸気を供給するようにしてもよい。また、昇圧工程によって容器10内が徐々に昇圧し、容器10内の圧力が最終目標設定圧力値となれば、または、所定の処理温度となれば、所定時間が経過するまで加熱処理工程を継続させる保持工程を実行する。なお、高圧高温水蒸気の容器10内への間欠導入は、少なくとも保持工程において実行するようにしてもよい。例えば、昇圧時には、容器10内に高圧高温水蒸気を連続的に供給するようにしてもよい。   In the present embodiment, high-pressure high-temperature steam is intermittently supplied into the container 10. As an aspect of intermittently supplying the high-pressure and high-temperature steam, for example, a predetermined amount of high-pressure and high-temperature steam may be supplied every time a predetermined time elapses. Further, for example, if the pressure in the container 10 (actual pressure value) is lower than a predetermined value, a predetermined amount of high-pressure and high-temperature steam may be supplied. In this case, in the initial pressurization step of the heat treatment step, a predetermined amount of high-pressure and high-temperature steam may be supplied as long as it falls below a predetermined value from a preset target value for pressure increase with a predetermined inclination. If the pressure in the container 10 is gradually increased by the pressure increasing process and the pressure in the container 10 reaches the final target set pressure value or reaches a predetermined processing temperature, the heat processing process is continued until a predetermined time elapses. A holding step is performed. The intermittent introduction of the high-pressure and high-temperature steam into the container 10 may be performed at least in the holding step. For example, high-pressure high-temperature steam may be continuously supplied into the container 10 at the time of pressurization.

上記のように高圧高温水蒸気を容器10内に間欠的に導入すれば、容器10内の圧力は、急激な上昇と被処理木材2等に熱エネルギーが奪われることによる低下とを繰り返しながら、被処理木材2の処理が促進される。
なお、この加熱処理工程は、被処理木材2が心部まで均一に着色されるように、所定の加熱処理時間が経過するまで実行するようにしてもよい。
また、高圧高温水蒸気を容器10内に導入する際には、排気管の開閉弁を間欠的に開放させたり、または、排気管に流量調整弁を設け、僅かに排気(リーク)させながら導入したりする態様等としてもよい。
If high-pressure and high-temperature steam is intermittently introduced into the container 10 as described above, the pressure in the container 10 is repeatedly increased and decreased while heat energy is deprived by the treated wood 2 and the like. The treatment of the treated wood 2 is promoted.
In addition, you may make it perform this heat processing process until predetermined heat processing time passes so that the to-be-processed wood 2 may be colored uniformly to a heart part.
In addition, when high-pressure high-temperature steam is introduced into the container 10, it is introduced while the exhaust pipe on-off valve is intermittently opened, or a flow-rate adjusting valve is provided on the exhaust pipe to slightly exhaust (leak) it. It is good also as an aspect etc.

また、図3(a)に示すように、被処理木材2を浸漬させた水面の上方側を、透湿性を有する保水材19によって覆った状態で、容器10内に高圧高温水蒸気を供給するようにしてもよい。このような構成とすれば、容器10(本実施形態では、水槽18)内の水を効率的に加熱することを可能としながらも、蒸発した水蒸気を保水材19において結露させて捕捉し、返水することができ、容器10(水槽18)内の水が減少するようなことを抑制することができる。また、例えば、容器10内の水槽18内の水に被処理木材2を浸漬させた状態で、後記するように真空発生源16を用いて減圧して冷却する際には、水槽18内の水が急激に沸騰し、溢れたり、飛散したりするようなことも考えられるが、このようなことを抑制することができる。   Further, as shown in FIG. 3 (a), high-pressure and high-temperature steam is supplied into the container 10 in a state where the upper side of the water surface in which the wood to be treated 2 is immersed is covered with a moisture retaining material 19 having moisture permeability. It may be. With such a configuration, while it is possible to efficiently heat the water in the container 10 (in this embodiment, the water tank 18), the evaporated water vapor is condensed and captured in the water retaining material 19, and returned. It is possible to prevent the water in the container 10 (water tank 18) from decreasing. In addition, for example, when the wood 2 to be treated is immersed in the water in the water tank 18 in the container 10 and cooled by using the vacuum generation source 16 as described later, the water in the water tank 18 is It is conceivable that the water suddenly boils and overflows or scatters, but this can be suppressed.

図3(a)に示す木材処理装置1の一変形例では、上方側に向けて開口する水槽18の開口を覆うように保水材19を設けた構成としている。
この保水材19としては、水蒸気の透過性を有し、高温高湿雰囲気への耐性を有したものであればよく、また、水槽18の気化(蒸発)した水を結露させるものとしてもよい。例えば、この保水材19として、織布や不織布、各種発泡シート等を採用するようにしてもよく、例えば、綿製のタオルを採用するようにしてもよい。
In a modification of the wood treatment apparatus 1 shown in FIG. 3A, a water retaining material 19 is provided so as to cover the opening of the water tank 18 that opens upward.
As the water retaining material 19, any material having water vapor permeability and resistance to a high-temperature and high-humidity atmosphere may be used, and water vaporized (evaporated) in the water tank 18 may be condensed. For example, a woven fabric, a non-woven fabric, various foamed sheets, or the like may be employed as the water retaining material 19, and for example, a cotton towel may be employed.

次いで、加熱処理された処理木材2Aを、水に浸漬させた状態で容器10内を大気圧以下に降圧して冷却する冷却工程を実行する(ステップ102)。この際、水蒸気供給管の開閉弁を閉とし、排気管の開閉弁を開放させ、容器10内の雰囲気圧力が大気圧となるまで降圧するようにしてもよい。この際、容器10内の圧力が急激に変動しないように徐々に降圧するようにしてもよい。また、容器10内の雰囲気圧力が大気圧となった後、水槽18内の水を排水して、若しくは排水させることなく処理木材2Aを取り出すようにしてもよいが、所定の冷却目標温度となるまで処理木材2Aを水に浸漬させた状態で放置するようにしてもよい。この場合、水槽18内の水に処理木材2Aを浸漬させたまま水槽18を容器10外に搬出し、その状態で放置するようにしてもよい。   Next, a cooling process is performed in which the heat-treated treated wood 2A is cooled by reducing the pressure inside the container 10 to below atmospheric pressure while being immersed in water (step 102). At this time, the open / close valve of the water vapor supply pipe may be closed, the open / close valve of the exhaust pipe may be opened, and the pressure may be lowered until the atmospheric pressure in the container 10 reaches atmospheric pressure. At this time, the pressure in the container 10 may be gradually reduced so that the pressure does not change rapidly. Further, after the atmospheric pressure in the container 10 becomes atmospheric pressure, the treated wood 2A may be taken out without draining the water in the water tank 18 or without draining, but the predetermined cooling target temperature is reached. Alternatively, the treated wood 2A may be left in a state of being immersed in water. In this case, the water tank 18 may be carried out of the container 10 while being left immersed in the water in the water tank 18 and left in that state.

または、この冷却工程において、容器10内の圧力を大気圧よりも減圧状態とするようにしてもよい。この場合、真空発生源16を作動させ、吸引管の開閉弁を開放させて容器10内を減圧するようにしてもよい。また、この際、容器10内の圧力が大気圧を上回った高圧状態において強制的に減圧するようにしてもよいが、好ましくは、上記のように大気圧となるまで排気した後に、減圧するようにしてもよい。
このように容器10内の圧力を減圧すれば、容器10内の水の沸点が低下し、水槽18内の水や、処理木材2A中の水分が気化する際の気化熱によって水槽18内及び処理木材2Aの冷却が促進される。
Alternatively, in this cooling step, the pressure in the container 10 may be set to a reduced pressure state from the atmospheric pressure. In this case, the inside of the container 10 may be decompressed by operating the vacuum generation source 16 and opening the opening / closing valve of the suction pipe. At this time, the pressure in the container 10 may be forcibly reduced in a high pressure state where the pressure is higher than the atmospheric pressure. However, preferably, the pressure is reduced after exhausting to the atmospheric pressure as described above. It may be.
If the pressure in the container 10 is reduced in this way, the boiling point of the water in the container 10 is lowered, and the water in the water tank 18 and the heat in vaporization when the water in the treated wood 2A is vaporized are treated in the water tank 18 and in the treatment. Cooling of the wood 2A is promoted.

また、この冷却工程は、容器10内の温度が所定の冷却目標温度となるまで実行するようにしてもよい。この冷却目標温度は、容器10内から取り出した処理木材2Aの割れを抑制する観点等から、また、樹種や処理条件、容器10外の温度等に応じて、適宜、設定するようにしてもよい。例えば、80℃〜10℃程度としてもよく、好ましくは、60℃〜30℃程度としてもよい。また、この冷却目標温度を、容器10外の温度との温度差が40℃以下となるように設定するようにしてもよく、好ましくは、容器10外の温度との温度差が20℃以下となるように設定するようにしてもよい。
このような冷却工程を実行した後、容器10(水槽18)内の水を排水し、処理木材2Aを取り出すようにしてもよい。
Further, this cooling step may be performed until the temperature in the container 10 reaches a predetermined cooling target temperature. This cooling target temperature may be appropriately set from the viewpoint of suppressing cracking of the treated wood 2A taken out from the container 10 and according to the tree species, processing conditions, the temperature outside the container 10, and the like. . For example, the temperature may be about 80 ° C to 10 ° C, and preferably about 60 ° C to 30 ° C. Further, the cooling target temperature may be set so that the temperature difference from the temperature outside the container 10 is 40 ° C. or less, and preferably the temperature difference from the temperature outside the container 10 is 20 ° C. or less. You may make it set so that it may become.
After performing such a cooling process, you may make it drain the water in the container 10 (water tank 18), and take out processed wood 2A.

なお、容器10内の温度が所定の冷却目標温度となるまで冷却工程を実行する態様に代えて、例えば、容器10内の圧力が大気圧となるまで降圧して冷却した後、処理木材2Aを容器10から取り出すようにしてもよい。この場合、処理木材2Aの割れを抑制する観点等から、処理木材2Aを、処理木材2Aの温度(例えば、心部の温度)が上記程度の冷却目標温度となるまで、上記のような保水材19または不透湿性シート(フィルム)等でラッピングしておくようにしてもよい。つまりは、冷却工程を、処理木材2Aを水に浸漬させた状態と取り出した状態とで実行するような態様としてもよい。   Instead of performing the cooling step until the temperature in the container 10 reaches a predetermined cooling target temperature, for example, after cooling down the pressure in the container 10 until the pressure in the container 10 reaches atmospheric pressure, the treated wood 2A is You may make it take out from the container 10. FIG. In this case, from the viewpoint of suppressing cracking of the treated wood 2A, the treated wood 2A is treated as described above until the temperature of the treated wood 2A (for example, the temperature of the core) reaches the above-described cooling target temperature. 19 or a moisture-impermeable sheet (film) or the like may be wrapped. In other words, the cooling process may be performed in a state where the treated wood 2A is immersed in water and in a state where the treated wood 2A is taken out.

また、上記のような処理がなされた処理木材2Aは、表面にスライサーや研磨等の平滑化処理や、その他、適宜、用途に応じた加工がなされるものとしてもよい。例えば、複数本の処理木材2Aを集成し、薄板状に研磨スライスしてスライス単板として用いられるものとしてもよい。また、このようなスライス単板を適宜の基材に積層した積層板、または、処理木材2A自体を、床材や壁材、天井材、造作材等の建材や、家具材、工芸品等として用いられるものとしてもよい。   In addition, the treated wood 2A subjected to the above-described treatment may be subjected to a smoothing treatment such as a slicer or polishing on the surface, or other appropriate processing according to the application. For example, a plurality of treated timbers 2A may be assembled and polished and sliced into a thin plate shape and used as a sliced single plate. Moreover, the laminated board which laminated | stacked such a slice single board | substrate on the appropriate base material, or processed wood 2A itself as building materials, such as a flooring material, a wall material, a ceiling material, a construction material, furniture material, a crafts, etc. It may be used.

本実施形態に係る木材処理方法及び木材処理装置1は、上述のような構成としたことで、処理後の木材(処理木材)2Aの割れを効果的に抑制することができる。
つまり、被処理木材2を、容器10内において水に浸漬させた状態で容器10内を昇圧昇温させて高圧高温下で処理した後、処理木材2Aを、水に浸漬させた状態で容器10内を大気圧以下に降圧して冷却する構成としている。従って、加熱処理工程及び冷却工程(の少なくとも初期)のいずれにおいても処理木材2Aの外周表面の略全面に水が接触した状態となり、処理木材2Aの割れを効果的に抑制することができる。また、容器10内を昇圧昇温する前に、被処理木材2を水に浸漬させる構成としているので、加圧した水を供給する必要がないため、加圧水を供給するポンプ等が不要となり、また、高圧の容器10内への水の供給による熱衝撃の発生を防止することができる。
The wood processing method and the wood processing apparatus 1 according to the present embodiment can effectively suppress cracking of the treated wood (treated wood) 2A by adopting the above-described configuration.
In other words, after the wood 2 to be treated is heated in the container 10 while being immersed in water in the container 10 and heated at a high pressure and high temperature, the treated wood 2A is immersed in water in the container 10. The inside is cooled to a pressure lower than the atmospheric pressure. Therefore, in both the heat treatment step and the cooling step (at least in the initial stage), water is in contact with substantially the entire outer peripheral surface of the treated wood 2A, and cracking of the treated wood 2A can be effectively suppressed. Further, since the wood to be treated 2 is immersed in water before raising the temperature inside the container 10 under pressure, there is no need to supply pressurized water, so a pump or the like for supplying pressurized water becomes unnecessary. The occurrence of thermal shock due to the supply of water into the high-pressure vessel 10 can be prevented.

また、本実施形態では、容器10内に高圧高温水蒸気を供給して容器10内を昇圧昇温させて高圧高温下で被処理木材2を処理する構成としている。従って、例えば、容器10全体を外部から加熱して昇温させたり、高温空気を容器10内に導入して昇温させたりするようなものと比べて、効率的に容器10内を昇圧昇温させることができ、容器10内の水を効率的に加熱することができる。   Moreover, in this embodiment, it is set as the structure which supplies the high voltage | pressure high temperature steam in the container 10, raises the temperature inside the container 10, and processes the to-be-processed wood 2 under high pressure high temperature. Therefore, for example, the temperature inside the container 10 can be increased efficiently by heating compared to the case where the entire container 10 is heated from the outside to raise the temperature or high temperature air is introduced into the container 10 to raise the temperature. The water in the container 10 can be efficiently heated.

また、本実施形態では、容器10内に高圧高温水蒸気を間欠的に供給する構成としている。従って、間欠的に供給される高圧高温水蒸気によって容器10内の圧力が上下しながら昇温され、加熱処理がなされる。これにより、被処理木材2の導管等に含まれる空気が圧力変化によって収縮と膨張とを繰り返し、これに伴い被処理木材2内外を水が移動する。この結果、容器10内の水が撹拌され、容器10内の水の温度の均一化を図ることができる。なお、このような態様に代えて、容器10内に高圧高温水蒸気を連続的に供給する構成としてもよい。   In the present embodiment, high-pressure high-temperature steam is intermittently supplied into the container 10. Therefore, the pressure in the container 10 is raised and lowered by the high-pressure and high-temperature steam supplied intermittently, and heat treatment is performed. Thereby, the air contained in the conduit | pipe etc. of the to-be-processed wood 2 repeats contraction and expansion | swelling by a pressure change, and water moves the inside and outside of the to-be-processed wood 2 with this. As a result, the water in the container 10 is agitated, and the temperature of the water in the container 10 can be made uniform. In addition, it is good also as a structure which supplies a high pressure high temperature steam continuously in the container 10 instead of such an aspect.

また、本実施形態では、容器10内に収容された水槽18内において被処理木材2を水に浸漬させるようにしている。従って、容器10内に、直接的に水を溜めて被処理木材2を浸漬させる構成と比べて、水の量を効果的に少なくすることができ、処理時間の短縮化を図ることができる。また、上記のように高圧高温水蒸気を供給して容器10内を昇圧昇温させる際にも、水槽18の水面のみならず、水槽18の外側面に接触する高圧高温水蒸気によって水槽18内を加熱することができ、加熱効率を向上させることができる。
なお、本実施形態では、容器10内に収容させた水槽18に水を供給可能な態様とした例を示しているが、このような態様に代えて、容器10外において水槽18に水を供給するようにしてもよい。この場合は、給水元14に接続された給水管やこれを開閉する開閉弁を設けないようにしてもよい。このような構成とすれば、容器10自体の簡略化を図ることができる。
Moreover, in this embodiment, the to-be-processed wood 2 is immersed in water in the water tank 18 accommodated in the container 10. Therefore, the amount of water can be effectively reduced and the processing time can be shortened as compared with a configuration in which water is directly stored in the container 10 and the treated wood 2 is immersed. Further, when the high pressure and high temperature steam is supplied and the inside of the container 10 is pressurized and heated as described above, the inside of the water tank 18 is heated not only by the water surface of the water tank 18 but also by the high pressure and high temperature steam contacting the outer surface of the water tank 18. Heating efficiency can be improved.
In this embodiment, an example in which water is supplied to the water tank 18 accommodated in the container 10 is shown. However, instead of such an aspect, water is supplied to the water tank 18 outside the container 10. You may make it do. In this case, you may make it not provide the water supply pipe connected to the water supply source 14, and the on-off valve which opens and closes this. With such a configuration, the container 10 itself can be simplified.

また、このように容器10内に収容された水槽18内において被処理木材2を水に浸漬させる態様に代えて、容器10内に、直接的に水を溜めて被処理木材2を浸漬させる態様としてもよい。例えば、図3(b)に示す木材処理装置1の一変形例では、水槽18を設けずに、容器10内に直接的に水を溜水可能な構成としている。この場合は、高圧高温水蒸気供給源15に接続された水蒸気供給管が水中において開口しないように、容器10の上部等に接続するようにしてもよい。
なお、この場合において、保水材19を設ける場合には、容器10内の水面を覆うように水面の上方側に所定間隔を隔てて保水材19を配置するようにしてもよい。
また、このように容器10内に、直接的に水を溜水可能とした態様に代えて、容器10内に堰等を設けて溜水可能とした構成等としてもよい。
Moreover, it replaces with the aspect which immerses the to-be-processed wood 2 in water in the water tank 18 accommodated in the container 10 in this way, the aspect which accumulates water directly in the container 10 and immerses the to-be-processed wood 2 It is good. For example, in a modified example of the wood treatment apparatus 1 shown in FIG. 3B, water is directly stored in the container 10 without providing the water tank 18. In this case, the steam supply pipe connected to the high-pressure and high-temperature steam supply source 15 may be connected to the upper part of the container 10 or the like so that it does not open in water.
In this case, when the water retaining material 19 is provided, the water retaining material 19 may be disposed at a predetermined interval above the water surface so as to cover the water surface in the container 10.
Further, instead of an aspect in which water can be directly stored in the container 10 as described above, a configuration in which a dam or the like is provided in the container 10 to enable water storage may be employed.

次に、本発明に係る木材処理方法を用いた実施例の一例と比較例とを、図4を参照して説明する。
各実施例及び比較例1では、同種の木材(ホワイトオーク)、同様の寸法(長さ寸法:600mm、厚さ寸法:34mm、幅寸法:80mm)及び同数(100本)の被処理木材を、桟木を介して多段状に、かつ幅方向に隙間を設けて容器内に配した。また、各実施例では、奥行寸法及び幅寸法がともに1000mmで深さ寸法が600mmの水槽内に、被処理木材を配した。比較例1では、容器内の載置部に被処理木材を配した。
実施例1〜3では、水槽内の水(水道水)に被処理木材を浸漬させた状態で加熱処理工程及び冷却工程を行った。
実施例4では、水槽内のポリエチレングリコール(PEG)水溶液(濃度5%)に被処理木材を浸漬させた状態で加熱処理工程及び冷却工程を行った。
比較例1では、被処理木材を水に浸漬させることなく加熱処理工程及び冷却工程を行った。
Next, an example and a comparative example using the wood treatment method according to the present invention will be described with reference to FIG.
In each Example and Comparative Example 1, the same kind of wood (white oak), similar dimensions (length dimension: 600 mm, thickness dimension: 34 mm, width dimension: 80 mm) and the same number (100) of treated wood, It was arranged in a container in a multi-stage shape through a cross and with a gap in the width direction. Moreover, in each Example, the to-be-processed wood was distribute | arranged in the water tank whose depth dimension and width dimension are 1000 mm, and whose depth dimension is 600 mm. In the comparative example 1, the to-be-processed wood was distribute | arranged to the mounting part in a container.
In Examples 1 to 3, the heat treatment step and the cooling step were performed in a state where the wood to be treated was immersed in water (tap water) in the water tank.
In Example 4, the heat treatment step and the cooling step were performed in a state where the wood to be treated was immersed in a polyethylene glycol (PEG) aqueous solution (concentration 5%) in a water tank.
In Comparative Example 1, the heat treatment step and the cooling step were performed without immersing the wood to be treated in water.

各実施例及び比較例1では、上記のように容器内の空気を水蒸気に置換した後、同様な態様で高圧高温水蒸気を間欠的に供給して昇圧昇温し、目標加熱温度120℃で加熱処理を行った。加熱処理時間は、比較例では、35分とし、各実施例では、水槽内の水(水溶液)の昇温を考慮して50分とした。
そして、それぞれ下記のような冷却工程を行った後に容器から取り出した処理木材に対して以下のような評価試験を行った。
In each Example and Comparative Example 1, after the air in the container was replaced with water vapor as described above, high-pressure high-temperature water vapor was intermittently supplied in the same manner to raise the pressure and heated at a target heating temperature of 120 ° C. Processed. The heat treatment time was 35 minutes in the comparative example, and 50 minutes in each example in consideration of the temperature rise of water (aqueous solution) in the water tank.
And the following evaluation tests were done with respect to the processed wood taken out from the container after performing the following cooling processes, respectively.

実施例1及び比較例1では、容器内が大気圧(100℃)となるまで徐々に排気する排気冷却を行った。これらの冷却所要時間は、30分であった。
実施例2では、容器内が大気圧(100℃)となるまで徐々に排気した後、容器内の温度が所定の冷却目標温度(40℃)となるまで放置する排気・放置冷却工程を実行した。この実施例2の冷却所要時間は、120分であった。
実施例3,4では、容器内が大気圧(100℃)となるまで徐々に排気した後、真空発生源を起動させて容器内の温度が所定の冷却目標温度(40℃)となるまで吸引排気して減圧する排気・減圧冷却工程を実行した。これらの冷却所要時間は、40分であった。
In Example 1 and Comparative Example 1, exhaust cooling was performed to exhaust gradually until the inside of the container reached atmospheric pressure (100 ° C.). These cooling times were 30 minutes.
In Example 2, after exhausting gradually until the inside of a container became atmospheric pressure (100 degreeC), the exhaust_gas | exhaustion / stand-by cooling process which left until the temperature in a container became predetermined | prescribed cooling target temperature (40 degreeC) was performed. . The time required for cooling in Example 2 was 120 minutes.
In Examples 3 and 4, after evacuating gradually until the inside of the container reaches atmospheric pressure (100 ° C.), the vacuum generation source is started and suction is performed until the temperature inside the container reaches a predetermined cooling target temperature (40 ° C.). An evacuation / decompression cooling process for exhausting and depressurizing was performed. The cooling time was 40 minutes.

各実施例及び比較例1において処理された処理木材の表面を、処理直後、3時間経過後及び12時間経過後に、それぞれ目視観察を行い、目視で確認できる割れが表面に発生している木材の本数の割合を割れ発生率として算出した。
結果は、図4に示すように、実施例1では、処理直後に3%、3時間経過後に20%、12時間経過後に40%の割れ発生率であった。
実施例2では、処理直後に4%、3時間経過後に8%、12時間経過後に13%の割れ発生率であった。
実施例3では、処理直後に3%、3時間経過後に7%、12時間経過後に15%の割れ発生率であった。
実施例4では、処理直後に2%、3時間経過後に5%、12時間経過後に7%の割れ発生率であった。
比較例1では、処理直後に80%、3時間経過後に90%、12時間経過後に95%の割れ発生率であった。
The surface of the treated wood treated in each Example and Comparative Example 1 was visually observed immediately after the treatment, after 3 hours and after 12 hours, respectively, and the cracks that could be visually confirmed were generated on the surface. The ratio of the number was calculated as the crack occurrence rate.
As a result, as shown in FIG. 4, in Example 1, the crack occurrence rate was 3% immediately after the treatment, 20% after 3 hours, and 40% after 12 hours.
In Example 2, the crack occurrence rate was 4% immediately after treatment, 8% after 3 hours, and 13% after 12 hours.
In Example 3, the crack occurrence rate was 3% immediately after treatment, 7% after 3 hours, and 15% after 12 hours.
In Example 4, the crack occurrence rate was 2% immediately after the treatment, 5% after 3 hours, and 7% after 12 hours.
In Comparative Example 1, the crack occurrence rate was 80% immediately after the treatment, 90% after 3 hours, and 95% after 12 hours.

上記結果から明らかなように、水または水溶液に浸漬させた状態で、加熱処理工程及び冷却工程を行った各実施例は、比較例1よりも割れ発生率が小さく、良好な結果となった。また、容器外との温度差が所定以下(20℃以下)となるまで水に浸漬させた状態で冷却した実施例2〜4は、大気圧となるまで水に浸漬させた状態で冷却した実施例1よりも割れ発生率が小さく、特に長時間経過後における割れ発生率が小さくなり、良好な結果となった。また、容器内を減圧しながら冷却した実施例3,4は、容器内が大気圧となった後、放置した実施例2よりも冷却に要した時間が極めて短く、良好な結果となった。また、PEG水溶液を用いた実施例4は、水(水道水)を用いた実施例3よりも割れ発生率が小さくなり、最も良好な結果となった。   As is clear from the above results, each example in which the heat treatment step and the cooling step were immersed in water or an aqueous solution had a smaller crack occurrence rate than Comparative Example 1, and gave good results. In addition, Examples 2 to 4, which were cooled in a state where they were immersed in water until the temperature difference from the outside of the container was equal to or less than a predetermined value (20 ° C. or less), were cooled in a state where they were immersed in water until atmospheric pressure was reached. The crack occurrence rate was smaller than that in Example 1, and the crack occurrence rate after a long period of time was particularly small. Further, in Examples 3 and 4 in which the inside of the container was cooled while decompressing, the time required for cooling was much shorter than that in Example 2 which was left after the inside of the container became atmospheric pressure, and good results were obtained. In addition, Example 4 using the PEG aqueous solution had a smaller crack generation rate than Example 3 using water (tap water), and the best result was obtained.

なお、上記実施形態では、容器10内の水中外に高圧高温水蒸気を供給して容器10内を昇圧昇温させる態様としているが、このような態様に代えて、容器10内の水中に高圧高温水蒸気を供給して容器10内を昇圧昇温させる態様としてもよい。
また、容器10内に高圧高温水蒸気を供給して容器10内を昇圧昇温させる態様に代えて、または加えて、容器10内に高温媒体が流通される熱交換パイプやヒーター等の加熱源を設け、加圧エアーを導入する態様や、高温加圧エアーを導入する態様としてもよい。また、容器10内に加熱源を設けた態様に代えて、容器10を外部から加熱する加熱源を設けた態様等としてもよい。容器10内を昇圧昇温させる態様としては、その他、種々の変形が可能である。
In the above-described embodiment, high-pressure and high-temperature steam is supplied to the outside of the water in the container 10 to raise the temperature inside the container 10. It is good also as an aspect which pressurizes and heat-ups the inside of the container 10 by supplying water vapor | steam.
Further, instead of or in addition to a mode in which high-pressure high-temperature steam is supplied into the container 10 and the inside of the container 10 is pressurized and heated, a heat source such as a heat exchange pipe or a heater through which a high-temperature medium is circulated in the container 10 is provided. It is good also as an aspect which provides and introduces pressurized air and introduce | transduces high temperature pressurized air. Moreover, it is good also as an aspect etc. which replaced with the aspect which provided the heating source in the container 10, and provided the heating source which heats the container 10 from the outside. Various other modifications are possible for increasing the pressure inside the container 10.

1 木材処理装置
10 容器
17 制御部
19 保水材
2 被処理木材
2A 処理木材(処理後の木材)
DESCRIPTION OF SYMBOLS 1 Wood processing apparatus 10 Container 17 Control part 19 Water retention material 2 Wood to be processed 2A Processing wood (wood after processing)

Claims (6)

被処理木材を、容器内において水に浸漬させた状態で前記容器内を昇圧昇温させて高圧高温下で処理した後、該処理後の木材を、水に浸漬させた状態で前記容器内を大気圧以下に降圧して冷却することを特徴とする木材処理方法。   After the wood to be treated is soaked in water in a container, the inside of the container is heated at a high pressure and treated at high pressure and high temperature, and then the treated wood is immersed in water in the container. A wood treatment method, wherein the pressure is reduced to below atmospheric pressure and cooling is performed. 請求項1において、
前記容器内に高圧高温水蒸気を供給して前記容器内を昇圧昇温させて高圧高温下で前記被処理木材を処理することを特徴とする木材処理方法。
In claim 1,
A wood treatment method, wherein high-pressure high-temperature steam is supplied into the vessel to raise the temperature inside the vessel and to treat the wood to be treated under high-pressure and high-temperature.
請求項2において、
前記容器内に高圧高温水蒸気を間欠的に供給することを特徴とする木材処理方法。
In claim 2,
A wood treatment method characterized by intermittently supplying high-pressure high-temperature steam into the container.
請求項2または3において、
前記被処理木材を浸漬させた水面の上方側を、透湿性を有する保水材によって覆った状態で、前記容器内に高圧高温水蒸気を供給することを特徴とする木材処理方法。
In claim 2 or 3,
A wood treatment method comprising supplying high-pressure and high-temperature steam into the container in a state where an upper side of a water surface in which the wood to be treated is immersed is covered with a moisture-permeable water retaining material.
請求項1乃至4のいずれか1項において、
前記被処理木材を浸漬させる水として、寸法安定化成分を溶解させた水溶液を用いることを特徴とする木材処理方法。
In any one of Claims 1 thru | or 4,
A wood treatment method characterized by using an aqueous solution in which a dimension stabilizing component is dissolved as water for immersing the wood to be treated.
被処理木材を浸漬させる水を溜水可能な容器と、
前記容器内において前記被処理木材を水に浸漬させた状態で前記容器内を昇圧昇温させた後に、該処理後の木材を水に浸漬させた状態で前記容器内を大気圧以下に降圧させる制御を実行する制御部と、
を備えていることを特徴とする木材処理装置。
A container capable of storing water for immersing the treated wood;
After raising the temperature inside the container while the wood to be treated is immersed in water in the container, the pressure inside the container is reduced to an atmospheric pressure or lower while the wood after treatment is immersed in water. A control unit for executing control;
A wood processing apparatus comprising:
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JPS5574814A (en) * 1978-11-30 1980-06-05 Matsushita Electric Works Ltd Dyeing method of wood
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