JPH0155905B2 - - Google Patents
Info
- Publication number
- JPH0155905B2 JPH0155905B2 JP55079854A JP7985480A JPH0155905B2 JP H0155905 B2 JPH0155905 B2 JP H0155905B2 JP 55079854 A JP55079854 A JP 55079854A JP 7985480 A JP7985480 A JP 7985480A JP H0155905 B2 JPH0155905 B2 JP H0155905B2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust
- air
- air supply
- damper
- amount
- 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
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- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
- Coating Apparatus (AREA)
- Ventilation (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、塗装ブースの運転開始時及び運転停
止時における給排気調整方法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for adjusting air supply and exhaust when starting and stopping a painting booth.
塗料塗装時、塗装ブース内には未塗着塗料等に
よるミストや蒸発溶剤が発生する。これをそのま
ま放置すると、被塗物にミストが付着して仕上り
外観を損ねる等の問題が生じるため、このミスト
を速やかに除去することが必要である。このた
め、一般に塗装ブースにおいては、塗装室上部に
空気供給用ダクト（給気ダクト）を接続した給気
室を設け、塗装室下部に排気ダクトを接続した未
塗着塗料回収室を設け、塗装室内を上方から下方
へ空気を適度の風速で流すことにより、ミストを
除去している。該塗装ブースにおいて、給気ダク
トから塗装室ブース内への送風は給気フアンによ
り行われ、塗装室内から排気ダクトへの送風は排
気フアンにより行われている。 When applying paint, mist and evaporated solvent from unapplied paint are generated in the paint booth. If this is left as is, problems such as the mist adhering to the object to be coated and impairing the finished appearance will occur, so it is necessary to promptly remove this mist. For this reason, paint booths generally have an air supply chamber connected to an air supply duct (air supply duct) in the upper part of the painting room, and an unpainted paint collection room connected to an exhaust duct in the lower part of the painting room. Mist is removed by flowing air from the top to the bottom of the room at a moderate speed. In the painting booth, air is blown from the air supply duct into the painting room booth by an air supply fan, and air is blown from the painting chamber to the exhaust duct by an exhaust fan.
（発明が解決しようとする課題）
しかしながら、上記の塗装ブースにおいては、
運転開始時及び運転停止時に空気の吸い込み及び
吐出により空気流が乱れ、埃や塗料ミストが舞い
上がり、塗膜に付着して塗装欠陥を生じるという
問題が起こつていた。(Problem to be solved by the invention) However, in the above painting booth,
At the start and stop of operation, the air flow is disturbed due to the suction and discharge of air, causing problems such as dust and paint mist flying up and adhering to the paint film, causing paint defects.
これは、該塗装ブースにおいては、運転開始
後、給排気量が定常時の給排気量になるまでに時
間がかかり、定常時の給排気量になるまでの増加
の仕方が給気側と排気側で異なるため、給気量と
排気量に差が生じて塗装室内の空気流のバランス
が崩れて空気の吸い込み及び吐出が起こるが、従
来の塗装ブースにおいては、給気量と排気量を変
動させる手段が設けられてなく、しかも給気の開
始及び停止と排気の開始及び停止は、それぞれ
別々に行われているため、この差を解消できない
ためと考えられる。運転停止時の場合も同様に、
給気量と排気量に差が生じて空気流が乱れると考
えられる。 This is because in the painting booth, it takes time for the supply and exhaust volume to reach the steady state supply and exhaust volume after the start of operation, and the way in which the supply and exhaust volume increases until it reaches the steady state level is different from that on the air supply side and the exhaust. Because of this, there is a difference between the air supply and exhaust volume, which disrupts the balance of air flow in the painting room and causes air to be sucked in and discharged.However, in conventional painting booths, the air supply volume and exhaust volume vary. It is thought that this is because no means is provided for this difference, and the start and stop of air supply and the start and stop of exhaust air are performed separately, so this difference cannot be resolved. Similarly, when the operation is stopped,
It is thought that the airflow is disturbed due to a difference between the intake air amount and the exhaust air amount.
特開昭51−110754号公報には、作業片上の塗
料、接着剤等を乾燥または硬化させるための熱処
理炉において、定常運転時、処理室内の温度感知
器及び圧力感知器により感知された温度及び圧力
により、ダンパを開閉し、給気量及び排気量をそ
れぞれ制御して、処理室内の温度、圧力等を所望
の値とする方法が記載されているが、これは、塗
装ブースの運転開始時及び運転停止時における空
気流の乱れを防止する技術とは異なる。 JP-A No. 51-110754 discloses that in a heat treatment furnace for drying or curing paints, adhesives, etc. on workpieces, during steady operation, the temperature and It describes a method of opening and closing a damper using pressure and controlling the supply air volume and exhaust volume, respectively, to bring the temperature, pressure, etc. in the processing chamber to desired values. This is different from the technology that prevents turbulence in the airflow during shutdown.
従つて、本発明は、運転開始時及び運転停止時
に空気流が乱れるのを防止し、塗料ミストや塵が
舞い上がつて塗装品の塗膜に付着することによる
塗装欠陥を防止することを目的とする。 Therefore, the purpose of the present invention is to prevent air flow from being disturbed when starting and stopping operations, and to prevent paint defects caused by paint mist and dust flying up and adhering to the paint film of painted products. shall be.
（発明が解決しようとする課題）
上記の目的を達成するために、本発明の塗装ブ
ースの運転開始時及び運転停止時における給排気
調整方法は、塗装ブースの運転開始及び運転停止
時に於ける塗装ブース内の給排気量を、塗装ブー
ス内の空気流の乱れが生じることのないように、
給気系及び排気系にそれぞれ設けた流量可変装置
により連動制御することを特徴とする。(Problems to be Solved by the Invention) In order to achieve the above object, the method for adjusting air supply and exhaust at the time of starting and stopping the operation of a painting booth of the present invention provides a The amount of air supply and exhaust inside the booth is adjusted to prevent turbulence in the air flow inside the painting booth.
It is characterized by interlocking control using flow rate variable devices provided in the air supply system and the exhaust system, respectively.
空気流の乱れを生じさせないために、給気系及
び排気系の連動制御は、運転開始時には、給気を
排気より若干先に開始し、その後、排気を開始
し、給気量と排気量が常にほぼ等量となるように
給排気量を増加していくことにより行われ、運転
停止時には、給気量を若干先に減少させ始め、そ
の後、排気量の減少を開始し、給気量と排気量が
常にほぼ等量となるように給排気量を減少してい
くことにより行われる。 In order to prevent air flow turbulence, the interlocking control of the air supply system and exhaust system starts the air supply slightly before the exhaust air at the start of operation, and then starts the exhaust air, so that the air supply amount and the exhaust amount are equal to each other. This is done by increasing the amount of air supply and exhaust so that it is always approximately the same amount, and when the operation is stopped, the amount of air supply begins to decrease slightly first, and then the amount of displacement begins to decrease, and the amount of air supply and exhaust air increases. This is done by decreasing the amount of air supply and exhaust so that the amount of displacement is always approximately the same.
流量可変装置としては、例えば可変ダンパを用
いることができる。その場合、給気系及び排気系
に設けられた可変ダンパが開き始める時間、及び
全開になるまでの速度が各々ダンパ開度調整装置
に設定され、その設定値によつて連動制御が行わ
れることになる。同様に運転停止時においても、
各々のダンパが閉じ始める時間及びその速度が設
定される。また、ダンパ開度調整装置の代わりに
タイマーを使用することも可能である。 For example, a variable damper can be used as the flow rate variable device. In that case, the time when the variable dampers installed in the air supply system and the exhaust system begin to open, and the speed until they are fully opened, are each set in the damper opening adjustment device, and interlocking control is performed based on the set values. become. Similarly, even when the operation is stopped,
The time and speed at which each damper begins to close is set. Moreover, it is also possible to use a timer instead of the damper opening adjustment device.
流量可変装置としては、可変翼、例えばミツヤ
可変翼軸流フアンを使用することもできる。この
場合、給気フアンとして可変翼を設け、翼角度を
変化させることにより給気量を変化させていく。
この場合、可変翼の翼角度の変化速度を、給気量
と排気量が常にほぼ等量となるように、コンピユ
ーター等の制御手段に設定し、該設定値によつて
翼角度を変化させていく。 As the flow variable device, a variable vane, for example a Mitsuya variable vane axial flow fan, can also be used. In this case, a variable blade is provided as an air supply fan, and the air supply amount is changed by changing the blade angle.
In this case, the rate of change of the blade angle of the variable blade is set in a control means such as a computer so that the intake air amount and the exhaust amount are always approximately equal, and the blade angle is changed according to the set value. go.
連動制御において、可変ダンパを開くタイミン
グ及び全開に至るまでの速度、または閉じ始める
タイミング及び全閉に至るまでの速度、並びに可
変翼の翼角度の変化速度は、塗装室の大きさ等に
より異なるため、各塗装室に対して実験を行うこ
とにより設定される。 In interlock control, the timing to open the variable damper and the speed to fully open it, the timing to start closing it and the speed to fully close it, and the rate of change of the blade angle of the variable damper vary depending on the size of the painting room, etc. , is set by conducting experiments for each painting room.
（作 用）
本発明の塗装ブースの運転開始時及び運転停止
時における給排気調整方法は、運転開始時及び運
転停止時において、給気系と排気系が連動制御さ
れるため、給気量と排気量とを常にほぼ等量とす
ることができ、従つて、空気の吸い込み、吐出が
起こることがなく、空気流の乱れが生じることが
ない。(Function) The method for adjusting the air supply and exhaust at the time of starting and stopping the operation of a paint booth of the present invention is such that the air supply system and the exhaust system are controlled in conjunction with each other at the time of starting and stopping the operation. The amount of exhaust gas can always be made almost equal to the amount of air being pumped out, so that air is not sucked in or discharged, and air flow is not disturbed.
（実施例）
本発明方法の一実施例を図面を用いて説明す
る。図に示すように、塗装ブース１は給気室２、
塗装室３及び未塗着塗料回収室４から成り、給気
室２には給気ダクト５が接続し、該ダクト５内に
設けたフアン７により外部から空気が供給され、
未塗着塗料回収室４には排気ダクト６が接続し、
この回収室４に入つた塗装ミスト含有空気はここ
で空気とミストに分離され、その後空気は排気ダ
クト６に設けたフアン８により系外へ排出され
る。そして給気ダクト５には可変ダンパ（給気ダ
ンパ）９が配設され、排気ダクト６には可変ダン
パ（排気ダンパ）１０が配設され、各ダンパ９，
１０は別に設けたダンパ開度調整装置１１に接続
している。図中、１２，１３は各室を仕切る多孔
性仕切り板であり、１４は被塗物を表わす。(Example) An example of the method of the present invention will be described with reference to the drawings. As shown in the figure, the painting booth 1 includes an air supply chamber 2,
It consists of a painting room 3 and an unpainted paint recovery room 4, and an air supply duct 5 is connected to the air supply room 2, and air is supplied from the outside by a fan 7 installed in the duct 5.
An exhaust duct 6 is connected to the unpainted paint recovery chamber 4,
The paint mist-containing air that has entered the recovery chamber 4 is separated into air and mist here, and then the air is discharged out of the system by a fan 8 provided in the exhaust duct 6. A variable damper (air supply damper) 9 is disposed in the air supply duct 5, a variable damper (exhaust damper) 10 is disposed in the exhaust duct 6, and each damper 9,
10 is connected to a damper opening adjustment device 11 provided separately. In the figure, 12 and 13 are porous partition plates that partition each chamber, and 14 represents an object to be coated.
上記構成の装置において、塗装ブース作動開始
時、可変ダンパ９，１０を全閉にして、フアン
７，８を同時に作動させると、この時点では塗装
室３に給気されず、空気の流れは生じない。次
に、ダンパ開度調整装置１１の指示により可変ダ
ンパ９を、空気が該可変ダンパ９より塗装室上面
に導かれるのに要する時間分だけ速く、可変ダン
パ１０よりも先に開き始め、可変ダンパ９及び可
変ダンパ１０はそれぞれ設定された速度で全開状
態まで開いていく。一方、塗装ブースの作動停止
時は始動時と全く同様に、一定の時間差分のみ可
変ダンパ９の方を、可変ダンパ１０より速く閉じ
始め、可変ダンパ９及び可変ダンパ１０はそれぞ
れ設定された速度で全閉状態にまで閉じていく。
これらの可変ダンパ９，１０を全閉した後、フア
ン７，８を停止する。 In the apparatus configured as described above, when the variable dampers 9 and 10 are fully closed and the fans 7 and 8 are operated at the same time when the coating booth starts operating, air is not supplied to the coating chamber 3 at this point and no air flow occurs. do not have. Next, according to the instruction from the damper opening degree adjusting device 11, the variable damper 9 starts to open earlier than the variable damper 10 by the time required for the air to be guided from the variable damper 9 to the upper surface of the painting chamber. 9 and the variable damper 10 are opened to the fully open state at respective set speeds. On the other hand, when the painting booth stops operating, the variable damper 9 starts to close faster than the variable damper 10 for a certain time difference, just like when it starts, and the variable damper 9 and the variable damper 10 close at their respective set speeds. It closes to the fully closed state.
After fully closing these variable dampers 9 and 10, the fans 7 and 8 are stopped.
このようにすれば、塗装開始時及び停止時の塗
装室において、給気量と排気量が時間的に連動制
御され、給気量と排気量は常に等量の状態を保つ
て増加していくため、塗装ブース内の空気流のバ
ランスが崩れることがない。 In this way, the air supply amount and exhaust amount are controlled in a temporally linked manner in the painting room when painting starts and stops, and the air supply amount and exhaust amount always increase while maintaining the same amount. Therefore, the balance of air flow inside the painting booth will not be disrupted.
次に給気室２の容量が1800m3、塗装室３の容器
が2400m3及び排気室（未塗着塗料回収室）４の容
量が1800m3である塗装ブースに於ける給排気の調
整例について説明する。 Next, let's look at an example of adjusting the air supply and exhaust in a painting booth where the capacity of the air supply chamber 2 is 1800 m3 , the container of the painting room 3 is 2400 m3 , and the capacity of the exhaust chamber (unpainted paint recovery room) 4 is 1800 m3. explain.
運転開始時
給気ダンパ９及び排気ダンパ１０の全閉の状態
にしておき、フアン７及び８を同時に作動させ
る。30秒後にダンパ開度調整装置１１の指示によ
り給気ダンパ９を開き始め、30秒かけて全開状態
にする。At the start of operation, the air supply damper 9 and the exhaust damper 10 are kept fully closed, and the fans 7 and 8 are operated simultaneously. After 30 seconds, the air supply damper 9 begins to open according to the instruction from the damper opening adjustment device 11, and is fully opened over 30 seconds.
一方、排気ダンパ１０はダンパ開度調整指示装
置１１の指示により、給気ダンパ９より５秒遅れ
て開き始め、30秒かけて全開状態にする。ダンパ
９及び１０が全開状態に於ける給排気量は10000
m3／分である。 On the other hand, the exhaust damper 10 starts opening 5 seconds later than the air supply damper 9 according to the instruction from the damper opening degree adjustment instructing device 11, and takes 30 seconds to fully open. The supply and exhaust amount when dampers 9 and 10 are fully open is 10,000.
m 3 /min.
運転停止時
ダンパ開度調整装置１１の指示により、給気ダ
ンパ９の閉塞を先に開始し、５秒遅れて排気ダン
パ１０の閉塞を開始する。両者共に全閉に要する
時間は30秒であり、その間に給排気量は10000
m3／分が０に減少する。給気ダンパ９及び排気ダ
ンパ１０が全閉状態になつた後にフアン７及び８
を停止し塗装ブースの運転を終了する。When the operation is stopped, according to an instruction from the damper opening adjustment device 11, the intake damper 9 is first started to be closed, and the exhaust damper 10 is started to be closed 5 seconds later. The time required for both to fully close is 30 seconds, during which time the air supply and exhaust volume is 10,000.
m 3 /min decreases to 0. After the supply air damper 9 and exhaust damper 10 are fully closed, the fans 7 and 8
and stop the operation of the paint booth.
上記実施例では、給排気量制御手段として、ダ
クトに可変ダンパ及びフアンを設けた例について
説明したが、本発明は特にこれに限定されること
なく、可変ダンパの代わりとなり得るものであれ
ば他の装置、例えば可変翼を用いても良い。例え
ば、作業開始時、即ち給排気開始の給気ダンパ及
び排気ダンパの時間差による開度調整は単にタイ
マーによつて行つてもよく、また給排気中の流量
制御はセンサによつて空気の温度または湿度を検
知し、これらのセンサの信号を受けて可変ダンパ
または可変フアンが連動するようにしても良い。
また、各可変ダンパ開閉の時間的ずれは、例えば
空気が給気ダンパから塗装室上面に達するまでに
要する時間、塗装室下面から排気ダンパへ到達す
るまでに要する時間等、適宜選択される。 In the above embodiment, an example was explained in which a variable damper and a fan were provided in the duct as means for controlling the amount of air supply and exhaust. However, the present invention is not particularly limited to this, and any other device can be used as long as it can be used in place of the variable damper. A device such as a variable blade may also be used. For example, the opening degree adjustment based on the time difference between the supply and exhaust dampers at the start of work, that is, the start of supply/exhaust, may be performed simply by a timer, and the flow rate control during supply/exhaust may be controlled by sensors based on the air temperature or exhaust damper. Humidity may be detected and a variable damper or a variable fan may be operated in response to signals from these sensors.
Further, the time lag between opening and closing of each variable damper is appropriately selected, such as the time required for air to reach the upper surface of the painting chamber from the supply air damper, the time required for air to reach the exhaust damper from the lower surface of the painting chamber, etc.
（発明の効果）
上記記載から明らかなように、本発明の方法
は、給排気系を連動制御することにより、運転開
始時及び運転停止時の給気量及び排気量を常に等
量としているため、塗装ブース内の空気流の乱れ
による塗料ミスト、埃等の舞い上がりを防止する
ことができ、被塗物の塗装不良を低減することが
できる。(Effects of the Invention) As is clear from the above description, the method of the present invention allows the supply air amount and the exhaust amount at the time of starting and stopping the operation to always be equal by controlling the supply and exhaust systems in conjunction with each other. It is possible to prevent paint mist, dust, etc. from flying up due to turbulence in the air flow in the coating booth, and it is possible to reduce coating defects on objects to be coated.
図は本発明給排気調整方法の一例を示す塗装ブ
ースの断面模式図である。
図中、１……塗装ブース、２……給気室、３…
…塗装室、４……未塗着塗料回収室、５，６……
ダクト、７，８……フアン、９，１０……可変ダ
ンパ、１１……ダンパ開度調整装置。
The figure is a schematic cross-sectional view of a paint booth showing an example of the air supply/exhaust adjustment method of the present invention. In the diagram, 1...painting booth, 2...air supply room, 3...
...Painting room, 4...Unpainted paint collection room, 5, 6...
Duct, 7, 8...Fan, 9, 10...Variable damper, 11...Damper opening adjustment device.
Claims (1)
ける塗装ブース内の給排気量を、塗装ブース内の
空気流の乱れが生じることのないように、給気系
及び排気系にそれぞれ設けた流量可変装置により
連動制御することを特徴とする塗装ブースの運転
開始時及び運転停止時における給排気調整方法。1. Variable flow rates are installed in the air supply system and exhaust system to prevent turbulence in the air flow inside the painting booth, to control the amount of air supply and exhaust inside the painting booth when starting and stopping the operation of the painting booth. A method for adjusting air supply and exhaust at the time of starting and stopping the operation of a painting booth, characterized by interlocking control by a device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7985480A JPS577281A (en) | 1980-06-13 | 1980-06-13 | Control method for charging air into or discharging from coating booth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7985480A JPS577281A (en) | 1980-06-13 | 1980-06-13 | Control method for charging air into or discharging from coating booth |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS577281A JPS577281A (en) | 1982-01-14 |
| JPH0155905B2 true JPH0155905B2 (en) | 1989-11-28 |
Family
ID=13701776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7985480A Granted JPS577281A (en) | 1980-06-13 | 1980-06-13 | Control method for charging air into or discharging from coating booth |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS577281A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63141667A (en) * | 1986-12-02 | 1988-06-14 | Toyota Motor Corp | Load correspondence type painting booth |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1496404A (en) * | 1975-03-25 | 1977-12-30 | B & K Machinery Int Ltd | Convection oven and method of drying solvents |
-
1980
- 1980-06-13 JP JP7985480A patent/JPS577281A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS577281A (en) | 1982-01-14 |
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