JPS6370048A - Wood dryer by energy collecting system through air - Google Patents
Wood dryer by energy collecting system through airInfo
- Publication number
- JPS6370048A JPS6370048A JP61214730A JP21473086A JPS6370048A JP S6370048 A JPS6370048 A JP S6370048A JP 61214730 A JP61214730 A JP 61214730A JP 21473086 A JP21473086 A JP 21473086A JP S6370048 A JPS6370048 A JP S6370048A
- Authority
- JP
- Japan
- Prior art keywords
- air
- drying
- wood
- circulation fan
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002023 wood Substances 0.000 title claims abstract description 63
- 238000001035 drying Methods 0.000 claims abstract description 114
- 238000000034 method Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 11
- 238000007605 air drying Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- 238000007791 dehumidification Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 210000002435 tendon Anatomy 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010981 drying operation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は木材の乾燥に太陽熱を利用する技術に係り、
詳しくは太陽熱を利用して温風を製造する空気集熱方式
による木材乾燥システムに関する。[Detailed Description of the Invention] Industrial Application Field This invention relates to a technology that utilizes solar heat for drying wood.
More specifically, the present invention relates to a wood drying system using an air heat collection method that uses solar heat to produce hot air.
従来技術とその問題点
木材乾燥設備としては従来の主流である蒸気式乾燥設備
に加え電気式および、最近注目されているヒートポンプ
を応用した除湿乾燥機が現在主に使用されている。蒸気
式は一般に大型でありほとんどの場合−基で数至もの乾
燥能力を持つのが多いのに対し、除湿式はやや規模が小
さく、電気式はさらに規模が小さい多品種少量生産向き
設備となっている。このように用途に合わせてこれらの
組合せで製材メーカーその他で使用されているが、蒸気
式は高温乾燥（７０〜９０’Ｃ）であるため調湿制御が
必須で乾燥操業に多年の経験と技術が必要とされる。こ
れに対し、除湿法は低温乾燥（４０℃前後）であるため
比較的木材の損傷が少なく操作は簡単であるという特徴
を有するが、ランニングコストが嵩むという難点がある
。Prior Art and Its Problems As wood drying equipment, in addition to the conventional mainstream steam type drying equipment, electric type and dehumidifying dryers applying heat pumps, which have recently been attracting attention, are currently mainly used. Steam type equipment is generally large in size and has a drying capacity of several units in most cases, whereas dehumidification type equipment is somewhat smaller in scale, and electric type equipment is even smaller in scale and is suitable for high-mix, low-volume production. ing. These combinations are used by lumber manufacturers and others depending on the application, but the steam type requires high temperature drying (70 to 90'C), so humidity control is essential, and drying operations require many years of experience and technology. is required. On the other hand, the dehumidification method uses low-temperature drying (around 40° C.), so it has the advantage of relatively little damage to the wood and is easy to operate, but it has the disadvantage of high running costs.
一方、木材乾燥に対する要求は建築技術の向上により年
々急速に増加しており、最近の住宅建築の高断熱化にと
もなう精度や狂によるすき間発生防止の要求、耐久性等
の面から乾燥木材の使用が増大してきている。また、木
材業界においても木材付加価値向上や、輸入木材に対す
る競争力強化等の面から木材乾燥の要求が高まっている
。しかしながら、前記の蒸気式や電気式ではその要求に
十分に対応できず、また除湿法はランニングコストが嵩
み乾燥コストが高くつくため木材価格の高謄を招くこと
になり好ましくなかった。そのためランニングコストの
安い木材乾燥設備の開発が強く望まれていた。On the other hand, the demand for dry wood is increasing rapidly year by year due to improvements in construction technology.The use of dried wood is due to the need for accuracy and prevention of gaps caused by warpage due to the high insulation of recent residential buildings, and durability. is increasing. Furthermore, in the lumber industry, there is an increasing demand for wood drying in order to increase the added value of wood and strengthen competitiveness against imported wood. However, the above-mentioned steam and electric methods cannot sufficiently meet these demands, and the dehumidification method requires high running costs and high drying costs, which leads to high lumber prices, which is not desirable. Therefore, there was a strong desire to develop wood drying equipment with low running costs.
そこで近年、ツーランシステムを木材乾燥に応用する方
法が試みられている。木材乾燥に太陽熱を利用すること
は早くから検討が行なわれており、置場に桟積みして簡
単な上屋を掛けた天然乾燥といわれている方法も広い意
味では太陽熱による乾燥といえる。しかし、より積極的
に太陽熱を利用した乾燥方法となると現状でｔよその例
は少なく、温室的な簡易ソーラー乾燥台や、ソーラード
ライヤー程度であり、いずれも広く実用普及するまでに
は至っていない。これは、現状のソーラーコレクターは
すべて温水式でおり、しかも設備」ストが相当嵩むため
木材乾燥用途への実用検討に至らなかったためと考えら
れる。Therefore, in recent years, attempts have been made to apply the Two-Run system to wood drying. The use of solar heat for drying wood has been studied for a long time, and the so-called natural drying method, in which wood is piled up on racks and covered with simple sheds, can also be considered solar drying in a broad sense. However, when it comes to drying methods that more actively utilize solar heat, there are currently only a few examples of drying methods, such as simple greenhouse-like solar drying tables and solar dryers, and none of these methods have reached the point where they have become widely used in practical use. This is thought to be because current solar collectors are all water-heating types, and the equipment costs are quite high, so they have not been considered for practical use in wood drying applications.
一方、省エネルギ一対策として）２風を太陽熱により製
造する方法が試みられている。この方法は基本的には太
陽熱をある集熱部材に吸収し、空気流との熱交換により
温風を得る空気集熱方式による方法である。最近、この
空気集熱によるソーラーシステムの木材乾燥への応用が
検討され、空気集熱コレクターを用いた木材乾燥装置が
開発されている。この乾燥装置は透明カバーで外周面を
被覆した風洞内に黒色に塗装したアルミまたはステンレ
ス類の集熱材を敷設した構造のコレクターを用いた集熱
装置により、集熱材からの対流伝熱により温風を発生さ
せ、この温風を木材乾燥室に流通させるとともに空気集
熱コレクターに導入せしめ、集熱コレクターと木材乾燥
苗量を循環させる方式である。この空気集熱方式による
木材乾燥装置は既存の温水式のソーラーコレクターに比
へ設備コストおよびランニングコストが安くつく利点が
あるため、木材の乾燥には有利である。On the other hand, as an energy-saving measure, a method of producing 2-wind air using solar heat has been attempted. This method is basically an air heat collection method in which solar heat is absorbed by a certain heat collection member and warm air is obtained by heat exchange with an air flow. Recently, the application of solar systems using air heat collection to wood drying has been studied, and wood drying devices using air heat collectors have been developed. This drying equipment uses a collector with a structure in which a black-painted aluminum or stainless steel heat-collecting material is laid inside a wind tunnel whose outer surface is covered with a transparent cover. This method generates warm air, circulates this warm air to the wood drying room, and introduces it to the air heat collector, which circulates the heat collector and the amount of dried wood seedlings. This air heat collection type wood drying device has the advantage of lower equipment and running costs than existing hot water type solar collectors, so it is advantageous for drying wood.
発明が解決しようとする問題点
木材乾燥において、乾燥速度や品質に影響を与える要因
としては、■乾燥空気（温風）温度、■乾燥空気湿度、
■乾燥空気量等がおばられる。一方、太陽熱集熱器の集
熱効率を変化させる要因としては、■集熱空気温度、■
集熱空気量、■外気温度、■日射量等があげられる。太
陽熱を主熱源とする乾燥装置にあっては、これらの２つ
の要因を適合させた装置とすることが重要であるが、一
般的には乾燥空気量と集熱空気量の最適値は乾燥速度や
品質に影響を与える要因の方が３〜５倍程度大きく、ま
た乾燥空気温度は木材の含水率によって最適温度が異な
る。Problems to be Solved by the Invention In wood drying, the factors that affect the drying speed and quality include: ■Drying air (warm air) temperature; ■Drying air humidity;
■The amount of drying air, etc. will be revealed. On the other hand, the factors that change the heat collection efficiency of solar heat collectors include: ■ Collection air temperature;
Examples include heat collecting air volume, ■ outside temperature, ■ amount of solar radiation, etc. For a drying device that uses solar heat as its main heat source, it is important to create a device that is compatible with these two factors, but in general, the optimal values for the amount of drying air and the amount of collected air are determined by the drying speed. The factors that affect wood quality are about 3 to 5 times larger, and the optimum drying air temperature differs depending on the moisture content of wood.
従来の前記空気集熱方式による木材乾燥装置の場合は、
乾燥空気と集熱空気の流通経路は同一であり、乾燥空気
量を基準にして空気量が決定されている。その結果、太
陽熱集熱器にとっては最適値の３〜５倍の空気が流入す
ることになり、集熱温度の低下をもたらし最適な乾燥空
気温度を維持することが困難になるという問題がめった
。また、この問題を解決するためには集熱器面積を必要
以上に大きくする必要があり、装置の経溜性を損なうこ
とになる。In the case of the conventional wood drying device using the air heat collection method,
The distribution paths of dry air and heat collecting air are the same, and the amount of air is determined based on the amount of dry air. As a result, 3 to 5 times as much air as the optimum value flows into the solar heat collector, causing a problem in that the heat collection temperature decreases and it becomes difficult to maintain the optimum dry air temperature. Furthermore, in order to solve this problem, it is necessary to increase the area of the heat collector more than necessary, which impairs the efficiency of the device.
また、従来の空気集熱コレクターは前記したとおり風洞
内に敷設した集熱材からの対流伝熱による熱交換方式で
あるため、風洞内の流通空気は該空気層の上下で温度差
を生じ均一に昇温されない欠点を有し、また空気流路の
上下方向高さを狭く形成しなければならないため流通空
気の速度が速く圧力損失が大きくなる欠点があり、太陽
熱の集熱効率が低く、改善が望まれていた。In addition, as mentioned above, conventional air heat collectors use a heat exchange method using convection heat transfer from the heat collecting material installed in the wind tunnel, so the circulating air in the wind tunnel has a temperature difference between the top and bottom of the air layer, making it uniform. It also has the disadvantage that the temperature does not rise to a high temperature, and since the vertical height of the air flow path must be formed narrow, the velocity of the circulating air is high and the pressure loss is large.The solar heat collection efficiency is low, and it is difficult to improve it. It was wanted.
この発明は従来の前記問題点を解決するためになされた
ものである。This invention has been made in order to solve the above-mentioned conventional problems.
問題点を解決するための手段
この発明は従来の前記問題点を解決づるため、集熱用空
気と乾燥用空気系統を区分し、集熱系と乾燥系をそれぞ
れ最適風損で運転できるようにし、また空気集熱コレク
ターとして風洞内にポーラスなシート状集熱材を傾斜設
置してなる高集熱効率のコレクターを用いた木材乾燥装
置を提案するものである。Means for Solving the Problems In order to solve the above-mentioned conventional problems, the present invention separates the heat collection air system and the drying air system, so that the heat collection system and the drying system can each be operated with optimum windage. In addition, we propose a wood drying device that uses a highly efficient heat-collecting efficiency collector in which a porous sheet-like heat-collecting material is installed obliquely in a wind tunnel as an air heat-collecting collector.
すなわち、この発明に係る空気集熱方式による木材乾燥
装置は、透明カバーで外周面を被覆した風洞内に、太陽
光を受光するポーラスなシート状集熱材を傾斜設置して
なる空気集熱コレクターにより１ｑた温風を木材乾燥用
空気として循環使用する木材乾燥装置であって、木材乾
燥室を２重天井とし、外側天井に前記集熱式コレクター
用空気循環ファンを設けるとともに、該循環ファンにて
２重天井内に送風された乾燥用空気を乾燥室と２重天井
内を循環させる乾燥用空気循環ファンを内側天井に設け
、集熱式コレクター用空気循環系統と乾燥用空気循環系
統をそれぞれ別系統としたことを特徴とするものでる。That is, the wood drying device using the air heat collection method according to the present invention is an air heat collection collector in which a porous sheet-like heat collection material that receives sunlight is installed at an angle in a wind tunnel whose outer peripheral surface is covered with a transparent cover. This is a wood drying device that circulates and uses 1 q of warm air as wood drying air, and the wood drying room has a double ceiling, and the air circulation fan for the heat collecting type collector is installed on the outer ceiling, and the circulation fan is equipped with a double ceiling. A drying air circulation fan is installed on the inner ceiling to circulate the drying air blown into the double ceiling between the drying room and the double ceiling. It is characterized by being a separate system.
すなわち、この発明は太陽熱を主熱源とする乾燥装置に
おいては前記した通り、乾燥用空気量と集熱用空気量が
異なることおよび、乾燥用空気温度は木材の含水率によ
って最適温度が異なる点を考、唆し、集熱系と乾燥系を
別系統とすることによってそれぞれ最適ｆｆ１ｉで運転
できるようにし集熱効率、乾燥効率の最大化がはかれる
ようにするとともに、集熱送風量をコントロールし低日
射量時でも乾燥要求温度が得られるようにし太陽熱利用
率を向上させたものである。さらに、乾燥系の送風制御
によって乾燥室内の木材前後の空気静圧のばらつきを少
なくし、通風むらを可及的に減少させられるようにした
ものである。In other words, this invention takes into account that in a drying device that uses solar heat as its main heat source, the amount of drying air and the amount of heat collecting air are different, and the optimum drying air temperature differs depending on the moisture content of wood, as described above. By considering and suggesting that the heat collection system and the drying system are separate systems, it is possible to operate each at the optimum ff1i, maximizing heat collection efficiency and drying efficiency, and controlling the amount of heat collection airflow to reduce the amount of solar radiation. This improves the solar heat utilization rate by making it possible to obtain the required drying temperature even when the drying temperature is high. Furthermore, by controlling the airflow of the drying system, variations in air static pressure in front and behind the wood in the drying chamber are reduced, and uneven ventilation can be reduced as much as possible.
また、風洞内にポーラスなシート状集熱材を傾斜設置し
た空気集熱コレクターは、有効伝熱面積の増大と圧力損
失の軽減がはかられることにより、空気流路の上下方向
高さを広く形成することが可能となり、大風量としても
圧力損失が軽減され、かつ流速を遅くしても伝熱面積が
充分あるため集熱効率の低下につながらない効果を有し
、さらに空気流路の上下方向高さを広く形成しても流通
空気層の上下で温度差を生じることなく均一に昇温する
ことが可能となるという利点を有する。従って、この集
熱コレクターによれば、太陽熱を高効率で集熱すること
が可能となり乾燥コストの低減にも大なる効果を奏する
。In addition, the air heat collector, which has a porous sheet heat collecting material installed at an angle inside the wind tunnel, increases the effective heat transfer area and reduces pressure loss, thereby increasing the vertical height of the air flow path. This makes it possible to reduce pressure loss even when the airflow is large, and there is a sufficient heat transfer area even when the flow velocity is slowed down, so it has the effect of not reducing heat collection efficiency. This has the advantage that even if the air layer is formed widely, it is possible to uniformly raise the temperature without causing a temperature difference between the upper and lower parts of the circulating air layer. Therefore, according to this heat collecting collector, it is possible to collect solar heat with high efficiency, and it is also very effective in reducing drying costs.
発明の図面による開示
第１図はこの発明の好適な木材乾燥装置を示す概略縦断
側面図、第２図は同上木材乾燥装置のエアーフロー、第
３図は同上装置における空気集熱コレクターを示す概略
図である。DISCLOSURE OF THE INVENTION BY DRAWINGS FIG. 1 is a schematic vertical sectional side view showing a preferred wood drying device of the present invention, FIG. 2 is a schematic diagram showing the air flow of the same wood drying device, and FIG. 3 is a schematic diagram showing an air heat collector in the same device. It is a diagram.
第１図および第２図において、（１）は空気集熱コレク
ター、（２）は木材乾燥室、（３）は外側天井、（４）
は内側天井、（５）は集熱用空気循環ファン、（６）は
乾燥用空気循環ファン、（７）は桟積みされた木材をそ
れぞれ示ｖａ
すなわち、この発明は木材乾燥室（２）を外側天井（３
）と内側天丼（４）とからなる２重天井とし、外側天井
（３）に設けた集熱用空気循環ファン（５）にて集熱用
空気を乾燥室の２重天丼内に導入し、内側天丼（４）に
設けた乾燥用空気循環ファン（６）にて乾燥用空気を２
重天丼内と木材乾燥室（２）内を循環させる方式とした
ものである。集熱用空気循環ファン（５）は木材乾燥室
（２）内の温度により送風用がコントロールされるよう
になっており、乾燥用空気循環ファン（６）は２Ｍ天井
内と乾燥室内を循環させる関係上、押し込み送風用と吸
引用の２種に分れ、かつ２種のファンは一定時間間隔で
押し込みと吸引を逆転制御できるようになっている。In Figures 1 and 2, (1) is an air heat collector, (2) is a wood drying room, (3) is an outer ceiling, and (4) is a wood drying room.
indicates the inner ceiling, (5) indicates the heat collecting air circulation fan, (6) indicates the drying air circulation fan, and (7) indicates the stacked wood. Outside ceiling (3
) and an inner tendon (4), and a heat collecting air circulation fan (5) installed on the outer ceiling (3) introduces heat collecting air into the double tendon of the drying room. Drying air is supplied by the drying air circulation fan (6) installed on the inner tendon (4).
This system circulates the inside of the jutendon and the wood drying room (2). The heat collecting air circulation fan (5) is designed to blow air according to the temperature inside the wood drying room (2), and the drying air circulation fan (6) circulates inside the 2M ceiling and inside the drying room. For this reason, there are two types of fans, one for forced air blowing and one for suction, and the two types of fans are designed to be able to reversely control the pushing and suction at fixed time intervals.
また、空気集熱コレクター（１）は第３図にその概略を
示すごとく、太陽光透過率のすぐれた樹脂フィルム等の
透明カバー（１−２）で外周面を被覆してなる密閉構造
の風洞（１−１）内に、該風洞を透過した太陽光を受光
しかつ同風洞内を通る空気流を遮るように傾斜して設け
たポーラスなシー１〜状集熱材（１−３）を有するもの
である。ここで、シート状集熱材としては、例えば炭素
繊維スクリーンが好適である。炭素繊維スクリーンは炭
素繊維シートで製作され、太陽光を受は昇温したスクリ
ーンの微小空隙を熱媒空気が通過することで効果的な熱
交換が行なわれるｍＮとなっている。このようなポーラ
スなシート状集熱材を風洞（１−１）内に傾斜設置する
と、伝熱面積の増大と圧力損失の軽減がはかられること
により風洞の空気流路を広く形成することが可能となり
、大Ｊｌ用としても圧力損失が軽減されるとともに、流
通空気層の上下で温度差を生じることなく均一に昇温す
ることが可能となる。従って、太陽エネルギーを効率よ
く回収することができるとともに、大量の温風を容易に
得ることが可能となる。In addition, the air heat collector (1) is a wind tunnel with an airtight structure whose outer circumferential surface is covered with a transparent cover (1-2) such as a resin film with excellent sunlight transmittance, as shown schematically in Figure 3. Inside (1-1), there is a porous sheet-shaped heat collecting material (1-3) installed at an angle so as to receive sunlight that has passed through the wind tunnel and to block the air flow passing through the wind tunnel. It is something that you have. Here, as the sheet-like heat collecting material, for example, a carbon fiber screen is suitable. The carbon fiber screen is made of a carbon fiber sheet, and when it receives sunlight, the heating medium air passes through the microscopic voids of the screen, which increases the temperature, resulting in effective heat exchange (mN). When such a porous sheet-like heat collecting material is installed at an angle in the wind tunnel (1-1), the heat transfer area is increased and the pressure loss is reduced, making it possible to form a wide air flow path in the wind tunnel. This makes it possible to reduce pressure loss even for large Jl applications, and to uniformly raise the temperature without creating a temperature difference between the upper and lower parts of the circulating air layer. Therefore, solar energy can be efficiently recovered and a large amount of hot air can be easily obtained.
作 用
集熱用空気循環系統と乾燥用空気循環系統をそれぞれ別
系統とした上記構成の木材乾燥装置において、空気集熱
コレクター（１）にて昇温された温風は集熱空気循環フ
ァン（５）にて乾燥室の２重天井内に導入され、内側天
井（４）に設置された乾燥用空気循環ファン（６）にて
木材乾燥室（２）内に押込まれ該室内の木材（７）を通
風した後、再び２重天井内に吸引されて循環する。In the wood drying device having the above configuration in which the heat collecting air circulation system and the drying air circulation system are separate systems, the warm air heated by the air heat collecting collector (1) is passed through the heat collecting air circulation fan ( The wood (7) is introduced into the double ceiling of the drying room at step 5) and pushed into the wood drying room (2) by the drying air circulation fan (6) installed on the inner ceiling (4). ) After being ventilated, it is sucked into the double ceiling again and circulated.
空気集熱コレクター（１）へは乾燥室（２）の空気が集
熱用空気循環ファン（５）にて導入され、風洞（１−１
）内に傾斜設置したシート状集熱材（１−３）と熱交換
されて再び昇温され、乾燥用空気として木材乾燥室（２
）へ供給される。Air from the drying room (2) is introduced into the air collector (1) by a heat collector air circulation fan (5),
) The temperature is raised again through heat exchange with the sheet-like heat collecting material (1-3) installed at an angle in the wood drying room (2) as drying air.
).
木材乾燥の場合、１回に乾燥させる木材量を例えば１０
〜１５ｍ３とした場合、乾燥に要する熱量から決定され
る空気集熱コレクター（１）の面積は８０〜１５０ｍ’
となる。このコレクターの集熱最適空気量は１６００〜
６０００ｍ３７■ｒ１乾燥用空気量は１００００〜１５
０００ｍ３／Ｈ１’が必要である。このように集熱用空
気量と乾燥用空気量が異なるため、この発明装置におけ
る集熱用空気循環ファン（５）は乾燥に要求される温度
により最適空気量になるようにコントロールされ、乾燥
用空気循環ファン（６）は空気集熱コレクター（１）に
無関係に最適乾燥風量で運転される。In the case of wood drying, the amount of wood to be dried at one time is, for example, 10
~15m3, the area of the air collector (1) determined from the amount of heat required for drying is 80~150m'
becomes. The optimal amount of heat collecting air for this collector is 1600 ~
6000m37■r1 drying air volume is 10000~15
000m3/H1' is required. Since the amount of air for heat collection and the amount of air for drying are different in this way, the air circulation fan for heat collection (5) in the device of this invention is controlled to have the optimum amount of air depending on the temperature required for drying. The air circulation fan (6) is operated at an optimum drying air volume independently of the air collector (1).
また、乾燥用空気循環ファン（６）は乾燥室（２）内に
おける木材前後の空気静圧のばらつきを少なくし通風ム
ラを減少させために、一定時間間隔で乾燥空気の押込み
と吸引を逆転させて均一化をはかる。In addition, the drying air circulation fan (6) reverses the pushing and suction of drying air at regular intervals in order to reduce variations in air static pressure before and after the wood in the drying chamber (2) and reduce uneven ventilation. to ensure uniformity.
発明の効果
この発明は上記のごとく、太陽熱集熱用空気循環ファン
と木材乾燥用空気循環ファンを各別に設け、集熱用空気
と乾燥用空気を別系統としたことにより、空気量の異な
る集熱用空気と乾燥用空気をそれぞれ最適風量で運転す
ることができ乾燥速度、集熱効率を最良の状態で運転す
ることが可能となる。また、低日射量時でも集熱送風量
をコントロールするだけで木材乾燥要求温度を得ること
ができ太陽熱利用率を向上させることができる。Effects of the Invention As described above, this invention provides separate air circulation fans for collecting solar heat and air circulation fans for wood drying, and separate systems for heat collecting air and drying air, thereby collecting air with different amounts of air. The heating air and drying air can each be operated at their optimum air volume, making it possible to operate at the best drying speed and heat collection efficiency. Furthermore, even when the amount of solar radiation is low, the required wood drying temperature can be obtained simply by controlling the amount of heat-collecting air, and the solar heat utilization rate can be improved.
また、乾燥用空気循環ファンを回転方向を変えることに
よって循環方向を自由に変えることができるので、桟積
木材の前後の空気静圧のばらつきを少なくして通風ムラ
を減少させることができる効果を有する。さらに、空気
集熱コレクターとして、透明カバーで被覆した風洞内に
ポーラスなシート状集熱材を傾斜設置した高集熱効率の
コレクターを用いたことにより、太陽熱集熱量が不足す
ることなく常に最適な温度で木材を乾燥することができ
る上、乾燥室の大型化もはかることが可能となる。In addition, since the direction of circulation can be freely changed by changing the rotation direction of the drying air circulation fan, it is possible to reduce variations in air static pressure before and after stacked timbers, thereby reducing uneven ventilation. have Furthermore, by using a highly efficient air collector in which a porous sheet-like heat collecting material is installed at an angle inside a wind tunnel covered with a transparent cover, the amount of solar heat collected is always maintained at the optimum temperature. In addition to being able to dry wood in a dryer, it is also possible to increase the size of the drying chamber.
従って、この発明装置によれば、木材乾燥コストの低減
が可能となり、木材付加価値向上や、輸入木材に対する
競争力強化等の面から高まっている木材乾燥の要求にも
十分に対応することができる等、そのもたらす効果は大
きい。Therefore, according to the device of this invention, it is possible to reduce the cost of drying wood, and it can fully meet the growing demand for wood drying in order to increase the added value of wood and strengthen competitiveness against imported wood. etc., the effect it brings is great.
第１図はこの発明の好適な木材乾燥装置を示す概略縦断
側面図、第２図は同上木材乾燥装置のエアーフロー、第
３図は同上装置における空気集熱コレクターを示す概略
図である。
１・・・空気集熱コレクター、２・・・木材乾燥装置、
３・・・外側天井、４・・・内側天井、５・・・集熱用
空気循環ファン、６・・・乾燥用空気循環ファン、７・
・・木材。
出願人 住友金属工業株式会社
第１図
第３図FIG. 1 is a schematic vertical sectional side view showing a preferred wood drying device of the present invention, FIG. 2 is a schematic diagram showing the air flow of the same wood drying device, and FIG. 3 is a schematic diagram showing an air heat collector in the same device. 1... Air heat collector, 2... Wood drying device,
3...Outer ceiling, 4...Inner ceiling, 5...Air circulation fan for heat collection, 6...Air circulation fan for drying, 7.
··wood. Applicant: Sumitomo Metal Industries, Ltd. Figure 1 Figure 3
Claims (1)
するポーラスなシート状集熱材を傾斜設置してなる空気
集熱式コレクターにより得た温風を木材乾燥用空気とし
て循環使用する木材乾燥装置であつて、木材乾燥室を２
重天井とし、外側天井に前記集熱式コレクター用空気循
環ファンを設けるとともに、該循環ファンにて２重天井
内に送風された乾燥用空気を乾燥室と２重天井内を循環
させる乾燥用空気循環ファンを内側天井に設け、集熱式
コレクター用空気循環系統と乾燥用空気循環系統をそれ
ぞれ別系統としたことを特徴とする空気集熱方式による
木材乾燥装置。Wood that circulates and uses warm air obtained by an air collector, which is made by installing a porous sheet-like heat-collecting material that receives sunlight at an angle inside a wind tunnel whose outer surface is covered with a transparent cover, as air for drying the wood. It is a drying device with two wood drying rooms.
The drying air has a double ceiling, and the above-mentioned heat collector air circulation fan is provided on the outer ceiling, and the drying air blown into the double ceiling by the circulation fan is circulated between the drying room and the double ceiling. A wood drying device using an air heat collection method, characterized in that a circulation fan is installed on the inner ceiling, and the air circulation system for the heat collection type collector and the air circulation system for drying are separate systems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61214730A JPH0746029B2 (en) | 1986-09-11 | 1986-09-11 | Wood drying equipment by air heat collection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61214730A JPH0746029B2 (en) | 1986-09-11 | 1986-09-11 | Wood drying equipment by air heat collection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6370048A true JPS6370048A (en) | 1988-03-30 |
| JPH0746029B2 JPH0746029B2 (en) | 1995-05-17 |
Family
ID=16660657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61214730A Expired - Fee Related JPH0746029B2 (en) | 1986-09-11 | 1986-09-11 | Wood drying equipment by air heat collection method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0746029B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5507180A (en) * | 1994-04-11 | 1996-04-16 | Unisia Jecs Corporation | Apparatus and method for detecting rough road travel of a vehicle, and apparatus and method for detecting misfire of a vehicle engine |
| US7637030B2 (en) | 2006-05-08 | 2009-12-29 | Marusho-Giken Co., Ltd. | Fully passive-type solar lumber drying house |
| US7963048B2 (en) * | 2005-05-23 | 2011-06-21 | Pollard Levi A | Dual path kiln |
| US8201501B2 (en) | 2009-09-04 | 2012-06-19 | Tinsley Douglas M | Dual path kiln improvement |
| CN105783018A (en) * | 2016-04-29 | 2016-07-20 | 黄山市白岳新能源科技有限公司 | Biomass pellet production system |
| US10619921B2 (en) | 2018-01-29 | 2020-04-14 | Norev Dpk, Llc | Dual path kiln and method of operating a dual path kiln to continuously dry lumber |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5487965A (en) * | 1977-12-26 | 1979-07-12 | Minamide Tabako Kansouki Seisa | Device for drying leaf tobacco by solar heat |
| JPS59118960U (en) * | 1983-02-01 | 1984-08-10 | 住友金属工業株式会社 | Pneumatic solar collector |
-
1986
- 1986-09-11 JP JP61214730A patent/JPH0746029B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5487965A (en) * | 1977-12-26 | 1979-07-12 | Minamide Tabako Kansouki Seisa | Device for drying leaf tobacco by solar heat |
| JPS59118960U (en) * | 1983-02-01 | 1984-08-10 | 住友金属工業株式会社 | Pneumatic solar collector |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5507180A (en) * | 1994-04-11 | 1996-04-16 | Unisia Jecs Corporation | Apparatus and method for detecting rough road travel of a vehicle, and apparatus and method for detecting misfire of a vehicle engine |
| US7963048B2 (en) * | 2005-05-23 | 2011-06-21 | Pollard Levi A | Dual path kiln |
| US7637030B2 (en) | 2006-05-08 | 2009-12-29 | Marusho-Giken Co., Ltd. | Fully passive-type solar lumber drying house |
| US8201501B2 (en) | 2009-09-04 | 2012-06-19 | Tinsley Douglas M | Dual path kiln improvement |
| US8342102B2 (en) | 2009-09-04 | 2013-01-01 | Douglas M Tinsley | Dual path kiln improvement |
| CN105783018A (en) * | 2016-04-29 | 2016-07-20 | 黄山市白岳新能源科技有限公司 | Biomass pellet production system |
| US10619921B2 (en) | 2018-01-29 | 2020-04-14 | Norev Dpk, Llc | Dual path kiln and method of operating a dual path kiln to continuously dry lumber |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0746029B2 (en) | 1995-05-17 |
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