JP2521162B2 - Heat treatment high temperature tank with air curtain - Google Patents
Heat treatment high temperature tank with air curtainInfo
- Publication number
- JP2521162B2 JP2521162B2 JP1321775A JP32177589A JP2521162B2 JP 2521162 B2 JP2521162 B2 JP 2521162B2 JP 1321775 A JP1321775 A JP 1321775A JP 32177589 A JP32177589 A JP 32177589A JP 2521162 B2 JP2521162 B2 JP 2521162B2
- Authority
- JP
- Japan
- Prior art keywords
- air
- temperature
- air curtain
- tank
- heat treatment
- 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.)
- Expired - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 title claims description 37
- 239000007788 liquid Substances 0.000 claims description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 238000001816 cooling Methods 0.000 claims description 15
- 238000001704 evaporation Methods 0.000 claims description 11
- 230000008020 evaporation Effects 0.000 claims description 10
- 230000000630 rising effect Effects 0.000 claims description 10
- 239000000498 cooling water Substances 0.000 claims 1
- 239000003570 air Substances 0.000 description 99
- 238000011084 recovery Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Landscapes
- Chemical Treatment Of Metals (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は熱処理液の成分を含む水蒸気が発生し易い熱
処理高温槽に係り、特に熱損失をできる限り抑制しなが
ら作業者に対する環境の整備をはからせ得るエアカーテ
ン付熱処理高温槽に関する。TECHNICAL FIELD The present invention relates to a heat treatment high temperature tank in which steam containing components of a heat treatment liquid is likely to be generated, and particularly to improve the environment for workers while suppressing heat loss as much as possible. The present invention relates to a heat treatment high temperature tank with an air curtain that can be covered.
（従来の技術） メッキ加工，各種部品に皮膜を精製する皮膜処理塔
は、加熱された処理液を収容した槽内において行われる
が、この場合、作業性を考慮して上記槽は熱処理液の蒸
発面に臨んで上部が全面開放しているのが普通である。(Prior art) A coating treatment tower for plating and refining a coating on various parts is carried out in a tank containing a heated treatment liquid. It is common that the upper surface is open to the evaporation surface.
（発明が解決しようとする課題） 上述する熱処理液槽において、槽の液温が50℃以上に
なるものでは液の成分を含む水蒸気が蒸発して有害な成
分が周囲に揮散するのが問題であることから、有害成分
飛散を防止するために従来は特開昭63−251741号公報に
示す如く、エアカーテン装置を用いて有害ガス発生部と
作業環境とをエアカーテンで遮断させるようにしてい
る。(Problems to be Solved by the Invention) In the heat treatment liquid tank described above, if the liquid temperature of the tank is 50 ° C. or higher, there is a problem that water vapor containing liquid components evaporates and harmful components volatilize to the surroundings. Therefore, in order to prevent scattering of harmful components, conventionally, as shown in JP-A-63-251741, an air curtain device is used to shut off the harmful gas generating part from the working environment by an air curtain. .
上述する従来のエアカーテン装置を利用したとする
と、例えばエアカーテン層における流速を槽に近い方の
下槽側が最も遅くて上層側に向け漸次高上させるように
すれば、槽内の熱処理液からの蒸発量を少なく抑えなが
ら作業者に悪影響をもたらす有害ガスの飛散を一応を防
止できるが、槽内からの上昇気流に対して直角方向の水
平に流動するエアカーテンで効果的にしゃ断しようとす
ればどうしても可成りの流速のエアカーテン層を必要と
し、しかも上昇気流に対し乱流作用が働くので槽内処理
液の液面に波立ちを起こすなどの問題がある。If the conventional air curtain device described above is used, for example, if the flow velocity in the air curtain layer is the slowest on the lower tank side closer to the tank and is gradually raised toward the upper layer side, Although it is possible to prevent the harmful gas from scattering, which adversely affects the worker while suppressing the evaporation amount of the air, it is possible to cut off effectively with an air curtain that flows horizontally at a right angle to the rising air flow from the inside of the tank. Inevitably, an air curtain layer with a fairly high flow rate is required, and since a turbulent action acts on the ascending air current, there is a problem that the liquid level of the processing liquid in the tank is wavy.
特に電子産業分野における微小部品の皮膜処理に使用
する場合は熱処理液の液面近くで加工が行われるのが普
通であるから、この液面付近が波立つのと、温度が低い
エアカーテン気流の干渉によって熱処理液の液面部分の
温度が上下変動するのとによって、加工製品の品質低下
をもたらすのが難点であり、作業環境の整備と品質向上
とが両立し得ないことが関係者にとって重要な問題であ
った。Especially when it is used for film treatment of minute parts in the electronics industry, it is usual to process near the liquid surface of the heat treatment liquid. It is important that the maintenance of the work environment and the improvement of quality cannot be achieved at the same time because it is difficult to bring down the quality of processed products due to the fact that the temperature of the liquid surface of the heat treatment liquid fluctuates up and down due to interference. It was a problem.
本発明はかかる従来の問題点に着目して、槽から漏洩
することによる熱損失を最小限にとどめて、槽内熱処理
作業の安定性を維持しながら、しかも作業者に対する環
境の浄化，整備を効果的に実現することによって、安全
面と品質面との一挙両得をはからせようとする点を目的
とする。The present invention focuses on such conventional problems, minimizes heat loss due to leakage from the tank, maintains the stability of heat treatment work in the tank, and further purifies and maintains the environment for workers. The purpose is to achieve both safety and quality benefits by effective implementation.
（課題を解決するための手段） しかして本発明は上記目的を達成せしめるために実施
例の図面を参照して明らかな如く、外気に比して相当に
高い温度での加熱下において槽内に収容される熱処理液
の蒸発面に臨み槽の上部が開放してなる熱処理高温槽
（１）、リターン空気路（６），（７）を備えたエアカ
ーテン気流を前記開放上部に覆わせて緩やかな上り勾配
で流動させるとともに、前記蒸発面に近い方の下槽エア
カーテン気流（４）と遠い方の上槽エアカーテン気流
（５）との間に、上層エアカーテン（５）の方が速くな
る流速勾配ならびに下層エアカーテン気流（４）の方が
高くなる温度勾配を夫々持たせてなるプッシュプル型の
エアカーテン装置（２）、前記両空気路（６），（７）
の少なくとも下層エアカーテン気流（４）に対する第１
リターン空気路（６）の途中空気対水形の熱交換器
（８）を介設するとともに、水冷却器（９）を設けて、
この水冷却器（９）と前記熱交換器（８）とを往水路
（10）及び復水路（11）により循環的に接続せしめてな
る冷却装置（３）、前記熱交換器（８）を通過した空気
の温度が前記熱処理高温槽（１）内の液温と室温との中
間の所定温度に保持されるように、水冷却器（９）と熱
交換器（８）との間に循環流量を調節する温度制御手段
（12）によりエアカーテン付熱処理高温槽を構成してな
ることを特徴とする。(Means for Solving the Problems) However, in order to achieve the above-mentioned object, as will be apparent with reference to the drawings of the embodiments, the present invention can be provided in a tank under heating at a temperature considerably higher than the outside air. A heat treatment high temperature tank (1) having an upper part of the tank facing the evaporation surface of the heat treatment liquid stored therein, and return air passages (6), (7) covered with an air curtain airflow to gently open the upper part of the opening. The upper air curtain (5) is faster between the lower tank air curtain air flow (4) closer to the evaporating surface and the upper tank air curtain air flow (5) farther from the evaporation surface. Push-pull type air curtain device (2) having both a flow velocity gradient and a temperature gradient in which the lower layer air curtain airflow (4) becomes higher, and both the air passages (6), (7)
For at least the lower air curtain air flow (4) of
An air-to-water heat exchanger (8) is provided in the middle of the return air passage (6), and a water cooler (9) is provided.
The heat exchanger (8) and the cooling device (3) in which the water cooler (9) and the heat exchanger (8) are cyclically connected by the outflow passage (10) and the condensate passage (11). It circulates between the water cooler (9) and the heat exchanger (8) so that the temperature of the passing air is maintained at a predetermined temperature intermediate between the liquid temperature in the heat treatment high temperature tank (1) and room temperature. A heat treatment high temperature tank with an air curtain is constituted by a temperature control means (12) for adjusting a flow rate.
次に請求項２の発明は、エアカーテン装置（２）の下
層エアカーテン気流（４）が、熱処理高温槽（１）から
の上昇気流に打ち勝つ得る最低風速（Ｖ）に保持され、
一方、上昇エアカーテン気流（５）が、前記最低風速
（Ｖ）よりも少し速い風速ならびに室温又は室温に近い
温度に保持されてなる条件を請求項１記載のエアカーテ
ン付熱処理高温槽に特定したものである。Next, in the invention of claim 2, the lower layer air curtain air flow (4) of the air curtain device (2) is maintained at a minimum wind speed (V) capable of overcoming the rising air flow from the heat treatment high temperature tank (1),
On the other hand, the condition that the rising air curtain airflow (5) is maintained at a wind speed slightly higher than the minimum wind speed (V) and at room temperature or a temperature close to room temperature is specified in the heat treatment high temperature tank with an air curtain according to claim 1. It is a thing.
また、請求項３の発明は、前記水冷却器（９）として
外気と水との間で直接的な熱交換を行わせる冷却塔に特
定したものである。Further, the invention of claim 3 is specified as a cooling tower as the water cooler (9) for directly performing heat exchange between outside air and water.
（作用） エアカーテン装置（２）において起生されたエアカー
テン気流が水平流でなく、プルフード（14A）に向け緩
やかに上昇する斜めの気流であるので上昇気流に逆らわ
ずに低いエアカーテン風速で、熱処理高温槽（１）内か
ら上昇流動する蒸発成分の回収を成すことができる。(Operation) Since the air curtain airflow generated in the air curtain device (2) is not a horizontal flow but an oblique airflow that gradually rises toward the pull hood (14 A ), a low air curtain wind speed does not oppose the rising airflow. In this way, it is possible to recover the vaporized components that flow upward from the heat treatment high temperature tank (1).
さらに上昇気流を乱すことがなく、液面に直接気流が
接触しないので、液面の波立ちは失くなり、安定した液
処理加工ができる。Furthermore, since the rising airflow is not disturbed and the airflow does not come into direct contact with the liquid surface, the ripples on the liquid surface are lost, and stable liquid processing can be performed.
また、エアカーテンの流速を抑え、かつ、温度を処理
液との間で大きい差が無いようにしているので熱損失が
少なく、そして回収後の気流の温度を一定に保持してな
ることにより、熱損失を一定値に保たせて熱処理液の液
面における温度を高精度に安定させ得る。Further, since the flow velocity of the air curtain is suppressed and the temperature does not have a large difference with the processing liquid, heat loss is small, and the temperature of the air flow after recovery is kept constant, By keeping the heat loss at a constant value, the temperature at the liquid surface of the heat treatment liquid can be stabilized with high accuracy.
（実施例） 以下、本発明の実施例を添付図面にもとづいて説明す
る。(Example) Hereinafter, an example of the present invention is described based on an accompanying drawing.
第１図において、（１）は加熱ヒータ（17）を内蔵す
る熱処理高温槽で、例えば微小部品の皮膜表面処理を行
うための液槽であり、収容した熱処理液の蒸発面に臨ん
で上部が全面開放しており、この開放部分が皮膜加工品
の出し入れ個所となっている。In FIG. 1, (1) is a heat treatment high temperature tank having a built-in heater (17), for example, a liquid tank for performing film surface treatment of minute parts, and the upper part facing the evaporation surface of the heat treatment liquid contained therein. The entire surface is open, and this open part is where the processed products come in and out.
上記高温槽（１）において水を主成分とする高温液
は、液面より発生する水蒸気と液面により加熱された空
気とが混じり合って0.2〜0.5米／秒の上昇気流となり、
液面を離れるにしたがって、ある高さまで、即ち気流が
周辺空気で冷却されるまでの域は気流速は増してゆく傾
向にある。In the high temperature tank (1), the high temperature liquid containing water as a main component mixes the steam generated from the liquid surface with the air heated by the liquid surface to form an updraft of 0.2 to 0.5 US / sec,
The air flow velocity tends to increase as the distance from the liquid surface increases to a certain height, that is, until the airflow is cooled by the ambient air.
（２）は前記熱処理高温槽（１）の直上位置に配設し
たリターン空気路付エアカーテン装置であって、該高温
槽（１）の一側上縁（右側上縁）に近設して、吹出口
（15A），（15B）を持つ２個のプッシュフード（1
3A），（13B）を上下方向に隣り合わせた配置で設け
て、各吹出口（15A），（15B）を左方に向けた横に開口
させており、また、これと対向した他（左）側上縁に近
接して吸込口（16A），（16B）を持つ２個のプルフード
（14A），（14B）を上下方向に隣り合わせた配置で設け
て各吸込口（16A），（16B）を右方に向けた横に開口さ
せている。(2) is an air curtain device with a return air passage disposed directly above the heat treatment high temperature tank (1), which is provided close to one upper edge (upper right edge) of the high temperature tank (1). , Two push hoods with outlets (15 A ), (15 B ) (1
3 A ), (13 B ) are arranged vertically adjacent to each other, and the outlets (15 A ), (15 B ) are opened laterally to the left and face each other. Two pull hoods (14 A ), (14 B ) having suction ports (16 A ), (16 B ) adjacent to the upper edge of the other (left) side are provided vertically adjacent to each other. (16 A ) and (16 B ) are opened horizontally to the right.
そして上段のプルフード（14A）と上段のプッシュフ
ード（13B）とをファン（19）が途中に介設された第２
リターン空気路（７）によって接続するとともに、下段
のプルフード（14A）と下段のプッシュフード（13A）と
をファン（18）、空気対水形の熱交換器（８）が直列関
係で途中に介設された第１リターン空気路（６）によっ
て接続している。The second pull hood (14 A ) and the upper push hood (13 B ) are installed in the middle of the fan (19).
While connecting by the return air passage (7), the lower pull hood (14 A ) and the lower push hood (13 A ) are connected in series with the fan (18) and the air-to-water heat exchanger (8) in series. Are connected by a first return air passage (6) provided in the.
なお、（24）はドレンパンで、熱交換器（８）での冷
却作用によってリターン空気中の水分が凝縮液化したの
を受容するためのものである。Incidentally, (24) is a drain pan for receiving the fact that the water in the return air is condensed and liquefied by the cooling action of the heat exchanger (8).
かく構成してなるプッシュプル型のエアカーテン装置
（２）は両ファン（18），（19）を駆動させると所定流
速の気流が上段の吹出口（15B）から上段の吸込口（1
6B）に向かって流動し、同様に下段の吹出口（15A）か
ら下段の吸込口（16A）に向かって流動する結果、下層
のエアカーテン気流（４）と上層のエアカーテン気流
（５）とが上下に並んで、前記熱処理高温槽（１）の開
放上部の全面を覆わせるようになる。In the push-pull type air curtain device (2) configured as described above, when both fans (18) and (19) are driven, an air flow of a predetermined flow velocity is generated from the upper outlet (15 B ) to the upper inlet (1 B ).
6 B ) and similarly from the lower outlet (15 A ) to the lower inlet (16 A ), the lower air curtain air flow (4) and the upper air curtain air flow (4) And 5) are arranged side by side so that the entire open upper part of the heat treatment high temperature tank (1) is covered.
なお、２個のプルフード（14A），（14B）は２個のプ
ッシュフード（13A），（13B）に対して僅かに高い位置
に配設してなり、従って吹出口（15A），（15B）から噴
出される空気の層流は水平に流れるのではなく緩やかな
勾配を有して高い方のプルフード（14A），（14B）に向
けて斜行流するようになる。The two pull hoods (14 A ) and (14 B ) are arranged at a slightly higher position than the two push hoods (13 A ) and (13 B ), so that the outlet (15 A) ), (15 B ), the laminar flow of air does not flow horizontally, but has a gentle gradient and flows obliquely toward the higher pull hoods (14 A ) and (14 B ). Become.
この場合、下段の吹出口（15A）から吹出させる空気
の吹出風速（Ｖ）は前記上昇気流に打ち勝って乱される
ことの無い値での最低値例えば１米／秒程度となすもの
であり、一方、上段吹出口（15B）の吹出風速は下段吹
出口（15A）の前記吹出風速（Ｖ）に比して僅かに速く
させるものであり、このように風速を規定することによ
って、下層のエアカーテン気流（４）の流速を可及的に
小さくさせて液面からの水分蒸発及び液面の波立ちを抑
え得るのと、吸込口（16A）付近での気流の乱れによる
未回収気流量を少なくし得るのとの利点があり、一方、
上層のエアカーテン気流（５）の流速を僅かに速くさせ
ることによって、下層エアカーテン気流（４）が上昇し
ようとするのを防ぎ漏洩気流を回収しエアカーテン効率
を高める利点がある。In this case, the blowing air velocity (V) of the air blown out from the lower outlet (15 A ) is set to a minimum value that is not disturbed by overcoming the rising air current, for example, about 1 US / sec. On the other hand, the outlet wind speed of the upper outlet (15 B ) is set to be slightly higher than the outlet wind speed (V) of the lower outlet (15 A ). By defining the wind speed in this way, The flow velocity of the lower layer air curtain air flow (4) can be made as small as possible to suppress the evaporation of water from the liquid surface and the ripple of the liquid surface, and uncollected due to the turbulence of the air flow near the suction port (16 A ). It has the advantage that the air flow rate can be reduced, while
By slightly increasing the flow velocity of the upper layer air curtain airflow (5), there is an advantage that the lower layer air curtain airflow (4) is prevented from rising and the leakage airflow is recovered and the air curtain efficiency is increased.
さらに下層のエアカーテン気流（４）の温度を熱処理
高温槽（１）内の液温と常温（室温）との中間の温度に
保持させるようにし、一方、上層のエアカーテン気流
（５）の温度を周囲の常温又は常温に近い温度に保持さ
せるようにしている。Furthermore, the temperature of the air curtain air flow (4) in the lower layer is kept at an intermediate temperature between the liquid temperature in the heat treatment high temperature tank (1) and room temperature (room temperature), while the temperature of the air curtain air flow (5) in the upper layer is maintained. Is kept at ambient temperature or a temperature close to ambient temperature.
かかる温度条件とすることによって、熱処理高温槽
（１）の液面からの水分蒸発及び放熱の量を軽減するこ
とが可能であり、このことは水蒸気回収用として冷却器
を設けた場合に該冷却器における負担を少なくし、か
つ、槽加熱容量の低減をはかることができる。By setting such temperature conditions, it is possible to reduce the amount of water vaporization and heat radiation from the liquid surface of the heat treatment high temperature tank (1), which means that when a cooler is provided for steam recovery, the cooling is performed. It is possible to reduce the burden on the vessel and to reduce the tank heating capacity.
以上説明した構成になる装置は、エアカーテン気流が
緩やかに上昇する過程において、液面からの上昇気流を
相互間で擾乱作用が行われることがない状態で円滑に取
り込むことが可能となり、回収効率が向上する。The device configured as described above can smoothly take up the rising airflow from the liquid surface in the process where the air curtain airflow gently rises without disturbing each other, and the recovery efficiency can be improved. Is improved.
そして、第1,第２リターン空気路（６），（７）にお
いて取り込んで上昇気流中の蒸発水分及び蒸発液成分を
凝縮液化させて全量回収ことができる。Then, the whole amount can be collected by taking in the first and second return air passages (6) and (7) and condensing and liquefying the evaporated moisture and evaporated liquid components in the ascending airflow.
上述の構成を要する熱処理高温槽（１）において、熱
処理液に体し温度の影響を及ぼし易い下層エアカーテン
気流（４）の温度を調節するための機構が設けられてい
るが、前記第１リターン空気路（６）の途中に空気流路
側を介在せしめて配設した空気対水形の熱交換器（８）
と、水冷却器（９）例えば室外に設置したクーリングタ
ワーと、それ等両器（８），（９）の水側流路相互を循
環路的に接続せしめた往水路（10）及び復水路（11）の
対になる例えば水用配管と、往水路（10）に設けた水循
環ポンプ（22）とによって冷却装置（３）を構成せしめ
るとともに、この冷却装置（３）に温度制御手段（12）
を併設せしめて、かくして、下層エアカーテン気流
（４）の温度調節を行わせる機構が形成される。In the heat treatment high temperature tank (1) that requires the above-mentioned configuration, a mechanism is provided for adjusting the temperature of the lower layer air curtain air flow (4) that is exposed to the heat treatment liquid and is apt to affect the temperature. Air-to-water heat exchanger (8) arranged with the air flow path side interposed in the middle of the air passage (6)
And a water cooler (9), for example, a cooling tower installed outdoors, and a water outflow passage (10) and a condensate passage (10) in which the water side flow passages of both of them (8) and (9) are connected in a circulating manner. The cooling device (3) is constituted by, for example, a water pipe forming a pair with (11) and a water circulation pump (22) provided in the outflow passage (10), and the cooling device (3) has a temperature control means (12).
Thus, a mechanism for controlling the temperature of the lower layer air curtain airflow (4) is formed.
上記温度制御手段（12）は、復水路（11）の途中に流
入ポートと第１流出ポートとによって介設した三方流量
調節電動弁（以下三方弁と称する）（21）と、前記熱交
換器（８）の空気側出口部における空気温度を検出して
設定温度に合致させるための出力を前記三方弁（21）の
操作部に与える温度調節器（23）とからなっていて、三
方弁（21）の第２流出ポートは往水路（10）の前記ポン
プ（22）に対し下流側となる部分から岐出に接続せしめ
る。The temperature control means (12) includes a three-way flow rate control valve (hereinafter referred to as a three-way valve) (21) provided in the middle of the condensate passage (11) by an inflow port and a first outflow port, and the heat exchanger. A temperature controller (23) for detecting the air temperature at the air side outlet of (8) and giving an output for matching the set temperature to the operating portion of the three-way valve (21). The second outflow port of 21) is connected to the outlet of the outflow channel (10) from the downstream side of the pump (22).
かく構成した温度制御手段（12）は、温度調節器（2
3）により検出した空気温度が設定温度例えば60℃を基
準として高温側で温度差を有していると、この温度差に
反比例して三方弁（21）に対してバイパス量を調節する
よう弁開度制御が成され、従って熱交換器（８）を通過
する水量を加減調節することにより、前記空気温度を60
℃の一定に保持させることができる。The thus constituted temperature control means (12) is a temperature controller (2
If the air temperature detected by 3) has a temperature difference on the high temperature side with reference to the set temperature, for example, 60 ° C, the valve to adjust the bypass amount for the three-way valve (21) in inverse proportion to this temperature difference. Since the opening degree is controlled, the air temperature is adjusted to 60 by controlling the amount of water passing through the heat exchanger (8).
It can be kept constant at ℃.
なお、温度制御手段（12）は、上述する構成に限定さ
れなく、熱交換器（８）を通過した空気の温度が所定温
度に保持されるように、熱交換器（８）と水冷却器
（９）との間の循環流量を調節し得る機能を有する構成
であれば他の変型になるものも当然本発明に含まれる。The temperature control means (12) is not limited to the configuration described above, and the heat exchanger (8) and the water cooler are maintained so that the temperature of the air passing through the heat exchanger (8) is maintained at a predetermined temperature. The present invention naturally includes other modifications as long as the configuration has the function of adjusting the circulation flow rate between (9).
このように温度制御手段（12）によって、少なくとも
第１リターン空気路（６）からプッシュフード（13A）
に至る空気の温度を一定に制御させることにより、特に
下層エアカーテン気流（４）の温度は一定となって変動
が全く無いことから、熱処理高温槽（１）内の熱処理液
は液面からの放熱量が一定に保たれる結果、液面の部分
の液温を変動が生じないよう、高精度の一定に保持する
ことが可能である。Thus, by the temperature control means (12), at least the push hood (13 A ) is fed from the first return air passage (6).
By controlling the temperature of the air to reach the constant temperature, the temperature of the lower air curtain air flow (4) becomes constant and there is no fluctuation. As a result of keeping the amount of heat radiation constant, it is possible to keep the liquid temperature of the liquid surface portion constant with high precision so as not to fluctuate.
ところで、水冷却器（９）として冷却塔を用いた場合
は、例えば85℃の水温を保った前記高温槽（１）に対し
て下層エアカーテン気流（４）の温度を60℃に保持しよ
うとすると、第１リターン空気路（６）中の熱交換器
（８）において32℃の温水との間で熱移動が成され、さ
らにこの32℃温水が冷却塔において湿球温度27℃の外気
との間で熱移動を行うようになる結果、全体として必要
以上の熱放熱を助長することなく、高温側の高温槽
（１）と低温側の冷却塔（９）との間で均衡のとれた熱
収支が成され、かくして運転コストが最小限におさまる
安定した冷却運転が可能である。By the way, when a cooling tower is used as the water cooler (9), for example, the temperature of the lower layer air curtain airflow (4) is kept at 60 ° C. with respect to the high temperature tank (1) which maintains the water temperature of 85 ° C. Then, in the heat exchanger (8) in the first return air passage (6), heat is transferred between the hot water of 32 ° C and the hot water of 32 ° C and the outside air having a wet bulb temperature of 27 ° C in the cooling tower. As a result of the heat transfer between the high temperature side high temperature tank (1) and the low temperature side cooling tower (9), the overall heat transfer is not promoted. A heat balance is achieved, thus enabling stable cooling operation with a minimum operating cost.
（発明の効果） 以上説明した構成を有し、作用をなす本発明の効果は
下記の通りである。(Effects of the Invention) The effects of the present invention having the above-described configuration and functioning are as follows.
緩やかな勾配で上昇するエアカーテン気流によって熱
処理高温槽（１）の開放上部全面を覆わせたことによっ
て、前記高温槽（１）内からの上昇気流との間に乱調を
もたらす相互干渉が生じないで上昇気流を円滑に取り込
むことが可能となり、回収効率を高く保持し得て作業環
境の整備が確実に行える。By covering the entire open upper part of the heat treatment high temperature tank (1) with an air curtain airflow that rises at a gentle gradient, there is no mutual interference that causes disorder with the upward airflow from the inside of the high temperature tank (1). The updraft can be taken in smoothly, and the recovery efficiency can be kept high, and the working environment can be reliably maintained.
さらにエアカーテン気流の風速を可及的に低くし、か
つ温度を前記高温槽（１）の温度と常温との中間の値に
一定保持させたので、液槽の液面からの水分蒸発及び放
熱を最小限度に止めるとともに、液温の安定を果たし得
るので、被処理製品の品質を高めることは勿論、槽加熱
容量の低減をはかり得る。Furthermore, since the wind speed of the air curtain airflow is made as low as possible and the temperature is kept constant at a value between the temperature of the high temperature tank (1) and room temperature, water evaporation and heat dissipation from the liquid surface of the liquid tank Since the temperature can be minimized and the liquid temperature can be stabilized, not only the quality of the product to be treated can be improved, but also the tank heating capacity can be reduced.
また、エアカーテン気流を温度及び風速が異なって、
上下に間隔を存し隣り合う２層とすることによって、槽
内からの上昇気流と接触する下層のエアカーテン気流
（４）が乱れて四散しようとするのを確実に防止し、漏
洩気流を回収できて回収効率をより高め得る。Also, the air curtain airflow has different temperature and wind speed,
By forming two layers adjacent to each other with a space above and below, it is possible to reliably prevent the air curtain air flow (4) in the lower layer, which comes into contact with the rising air flow from the inside of the tank, to disturb and try to disperse, and collect the leaked air flow. As a result, recovery efficiency can be improved.
特に水冷却器（９）として冷却塔を用いた場合は、少
量の熱放散に見合った冷却運転を安定的に、しかも低ラ
ンニングコストで行える利点がある。In particular, when a cooling tower is used as the water cooler (9), there is an advantage that the cooling operation corresponding to a small amount of heat dissipation can be stably performed at low running cost.
第１図は本発明の実施例に係る装置系統図である。 （１）……熱処理高温層、 （３）……エアカーテン装置、 （４）……下層エアカーテン気流、 （５）……上層エアカーテン気流、 （６）……第１リターン空気路、 （７）……第２リターン空気路、 （８）……熱交換器、 （９）……水冷却器、 （10）……往水路、 （11）……復水路、 （12）……温度制御手段、 FIG. 1 is a system diagram of an apparatus according to an embodiment of the present invention. (1) …… High temperature layer for heat treatment, (3) …… Air curtain device, (4) …… Lower air curtain air flow, (5) …… Upper air curtain air flow, (6) …… First return air path, ( 7) …… Second return air passage, (8) …… Heat exchanger, (9) …… Water cooler, (10) …… Outgoing passage, (11) …… Condensate passage, (12) …… Temperature Control means,
───────────────────────────────────────────────────── フロントページの続き (72)発明者 遠藤 源正 大阪府豊中市上野東１丁目６―13 (72)発明者 中村 進 兵庫県西宮市高松町２丁目５―115 (72)発明者 板花 功 滋賀県大津市衣川２丁目17―２ ─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Genmasa Endo 1-6-13 Uenohigashi, Toyonaka-shi, Osaka (72) Inventor Susumu Nakamura 2-5-115, Takamatsu-cho, Nishinomiya-shi, Hyogo (72) Inventor board Flower Isao 2-17-2 Kinugawa, Otsu City, Shiga Prefecture
Claims (3)
おいて槽内に収容される熱処理液の蒸発面に臨み槽の上
部が開放してなる熱処理高温槽（１）、リターン空気路
（６），（７）を備えたエアカーテン気流を前記開放上
部に覆わせて緩やかな上り勾配で流動させるとともに、
前記蒸発面に近い方の下層エアカーテン気流（４）と遠
い方の上層エアカーテン気流（５）との間に、上層エア
カーテン（５）の方が速くなる流速勾配ならびに下層エ
アカーテン気流（４）の方が高くなる温度勾配を夫々持
たせてなるプッシュプル型のエアカーテン装置（２）、
前記両空気路（６），（７）の少なくとも下層エアカー
テン気流（４）に対する第１リターン空気路（６）の途
中に空気対水形の熱交換器（８）を介設するとともに、
水冷却器（９）を設けて、この水冷却器（９）と前記熱
交換器（８）とを往水路（10）及び復水路（11）により
循環的に接続せしめてなる冷却装置（３）、前記熱交換
器（８）を通過した空気の温度が前記熱処理高温槽
（１）内の液温と室温との中間の所定温度に保持される
ように、水冷却器（９）と熱交換器（８）との間の循環
流量を調節する温度制御手段（12）を備えてなることを
特徴とするエアカーテン付熱処理高温槽。1. A high-temperature heat treatment tank (1), in which the upper part of the tank is open, facing the evaporation surface of the heat-treatment liquid contained in the tank under heating at a temperature considerably higher than the outside air, and a return air passage. While covering the open upper part with the air curtain airflow provided with (6) and (7) to flow with a gentle upslope,
Between the lower layer air curtain air flow (4) closer to the evaporation surface and the upper layer air curtain air flow (5) farther from the evaporation surface, the upper layer air curtain (5) has a faster flow velocity gradient and the lower layer air curtain air flow (4). ), A push-pull type air curtain device (2) having temperature gradients that increase
An air-to-water heat exchanger (8) is provided in the middle of the first return air passage (6) for at least the lower air curtain airflow (4) of both air passages (6), (7),
A cooling device (3) which is provided with a water cooler (9), and the water cooler (9) and the heat exchanger (8) are cyclically connected to each other through the outflow passage (10) and the condensate passage (11). ), So that the temperature of the air that has passed through the heat exchanger (8) is maintained at a predetermined temperature intermediate between the liquid temperature in the heat treatment high temperature tank (1) and room temperature. A heat treatment high temperature tank with an air curtain, comprising a temperature control means (12) for adjusting a circulation flow rate with an exchanger (8).
ン気流（４）が、熱処理高温槽（１）からの上昇気流に
打ち勝つ得る最低風速（Ｖ）に保持され、一方、上層エ
アカーテン気流（５）が、前記最低風速（Ｖ）よりも少
し速い風速ならびに室温又は室温に近い温度に保持され
てなる請求項１記載のエアカーテン付熱処理高温槽。2. The lower curtain airflow (4) of the air curtain device (2) is maintained at a minimum wind speed (V) capable of overcoming the rising airflow from the heat treatment high temperature tank (1), while the upper curtain airflow (4) is maintained. The heat treatment high temperature tank with an air curtain according to claim 1, wherein 5) is maintained at a wind speed slightly higher than the minimum wind speed (V) and at room temperature or a temperature close to room temperature.
却用の水との間での直接的な熱交換を行わせる冷却塔で
ある請求項１又は２記載のエアカーテン付熱処理高温
槽。3. The air curtain according to claim 1, wherein the water cooler (9) provided outside the room is a cooling tower for performing direct heat exchange between the outside air and the cooling water. Heat treatment high temperature tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1321775A JP2521162B2 (en) | 1989-12-11 | 1989-12-11 | Heat treatment high temperature tank with air curtain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1321775A JP2521162B2 (en) | 1989-12-11 | 1989-12-11 | Heat treatment high temperature tank with air curtain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03181733A JPH03181733A (en) | 1991-08-07 |
| JP2521162B2 true JP2521162B2 (en) | 1996-07-31 |
Family
ID=18136290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1321775A Expired - Lifetime JP2521162B2 (en) | 1989-12-11 | 1989-12-11 | Heat treatment high temperature tank with air curtain |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2521162B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072157A (en) * | 2017-12-05 | 2018-05-25 | 珠海格力电器股份有限公司 | Combined structure of space and air conditioner and control method of air conditioner |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5566923B2 (en) * | 2011-01-21 | 2014-08-06 | 興研株式会社 | Air blower connector and air blower continuum using the connector |
| CN103256710A (en) * | 2013-05-27 | 2013-08-21 | 苏州经贸职业技术学院 | Air-curtain type bathroom heating device |
| CN116947140B (en) * | 2023-08-15 | 2024-06-14 | 中国矿业大学 | A cross-flow falling film evaporation condensation desalination device |
-
1989
- 1989-12-11 JP JP1321775A patent/JP2521162B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072157A (en) * | 2017-12-05 | 2018-05-25 | 珠海格力电器股份有限公司 | Combined structure of space and air conditioner and control method of air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03181733A (en) | 1991-08-07 |
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