JPH11188308A - Drying oven - Google Patents

Drying oven

Info

Publication number
JPH11188308A
JPH11188308A JP35900097A JP35900097A JPH11188308A JP H11188308 A JPH11188308 A JP H11188308A JP 35900097 A JP35900097 A JP 35900097A JP 35900097 A JP35900097 A JP 35900097A JP H11188308 A JPH11188308 A JP H11188308A
Authority
JP
Japan
Prior art keywords
furnace
floor
slit
oven
conveyor
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
Application number
JP35900097A
Other languages
Japanese (ja)
Other versions
JP3793631B2 (en
Inventor
Koji Shakubo
浩 二 舎久保
Yasushige Hane
根 靖 栄 羽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Trinity Industrial Corp
Original Assignee
Trinity Industrial Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Trinity Industrial Corp filed Critical Trinity Industrial Corp
Priority to JP35900097A priority Critical patent/JP3793631B2/en
Publication of JPH11188308A publication Critical patent/JPH11188308A/en
Application granted granted Critical
Publication of JP3793631B2 publication Critical patent/JP3793631B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)

Abstract

PROBLEM TO BE SOLVED: To improve quality of coating and to reduce time and labor required for cleaning work for a drying oven by removing dust whirling up in the oven. SOLUTION: A base 7 running on a conveyer rail 6 laid under the floor out of an oven and a trestle 4 on which a work W is placed are formed separately up and down through a support 8 with a required height and the support 8 is passed through a slit 9 formed in the floor wall 3F of the drying oven 1 into the oven to move the work W in the oven. In this case, when hot air is made to blow from hot-air blowing nozzles 12 arranged in the neighborhood of floor faces of left and right side walls, air flows going toward the slit 9 along the floor faces 3f from both left and right sides are formed. In addition, fine dust taken in the oven is agglomerated and enlarged by being stuck with an org. solvent ingredient and after it falls on the floor faces 3f in the oven, it is carried to the slit 9 by the air flow flowing along the floor faces 3f and is discharged outside the oven from the slit 9.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、ワークをコンベア
で搬送しながら乾燥させるトンネル型の乾燥炉に関し、
特に塗膜を乾燥させる塗装用乾燥炉に用いて好適なもの
である。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tunnel type drying furnace for drying a work while conveying it by a conveyor,
Particularly, it is suitable for use in a coating drying furnace for drying a coating film.

【0002】[0002]

【従来の技術】自動車ボディなどの塗装ラインにおいて
は、コンベアの台車に被塗物となる自動車ボディを載せ
て搬送しながら塗装を行い、塗装終了後、被塗物を台車
ごと高温の乾燥炉に搬入して塗膜の焼付乾燥を行ってい
る。このように、台車ごと乾燥炉に搬入すれば、途中で
被塗物を載せ換える手間もなく、被塗物を搬送しながら
連続的に塗装し、乾燥させることができる。
2. Description of the Related Art In a coating line for an automobile body or the like, an automobile body as an object to be coated is placed on a conveyor trolley to carry the coating while being conveyed. We carry in and bake and dry the coating film. In this way, if the entire carriage is carried into the drying furnace, it is possible to continuously apply and dry the article while transporting the article without the trouble of replacing the article on the way.

【0003】 この場合に、被塗物を搬送するコンベア
の台車は、炉外から炉内に入り、再び炉外へ出ていくよ
うに走行し、乾燥炉の運転中は、室温の台車が次々と搬
入されて炉内の熱を奪い、その熱を炉外に持ち出すの
で、その分、熱効率が低くなり、ランニングコストが嵩
む。また、炉外を走行している間に台車に付着した塵埃
が炉内に持ち込まれ易いだけでなく、台車のローラや駆
動機構などの機械的可動部分が炉内に配設されているの
で炉内で塵埃が発生し易い。
[0003] In this case, a truck of a conveyor for transporting an article to be coated enters the furnace from outside the furnace and travels out of the furnace again. During the operation of the drying furnace, the carts at room temperature are successively provided. Heat is taken in and the heat inside the furnace is taken out, and the heat is taken out of the furnace. As a result, the heat efficiency is reduced and the running cost is increased. Moreover, not only is the dust attached to the truck easy to be brought into the furnace while traveling outside the furnace, but also the mechanically movable parts such as the rollers and drive mechanism of the truck are arranged inside the furnace, Dust is likely to be generated inside.

【0004】 このため、本出願人は、ワークを搬送す
るコンベアの機械的可動部分を炉外に配した乾燥炉を提
案した(特開平8−155372号公報参照)。このコ
ンベアは、ワークを載置する架台と、コンベアレール上
を走行するベースを、所要高さの支柱を介して上下に分
離して形成し、炉外床下にコンベアレールを敷設すると
共に、前記支柱を乾燥炉の床壁に形成したスリットから
炉内に貫装して前記架台に載置したワークを炉内で移動
できるようにしたものである。このようにすれば、炉内
にコンベアの機械的可動部分がないため、熱効率にも優
れ、また、機械的可動部分により塵埃が持ち込まれたり
発生することもない。
[0004] For this reason, the present applicant has proposed a drying oven in which a mechanically movable portion of a conveyor for transporting a workpiece is disposed outside the oven (see Japanese Patent Application Laid-Open No. 8-155372). In this conveyor, a base on which a work is placed and a base running on the conveyor rail are formed vertically separated via a support having a required height, and the conveyor rail is laid under a furnace outer floor, and the support is provided. Is penetrated into a furnace through a slit formed in a floor wall of a drying furnace so that a workpiece placed on the gantry can be moved in the furnace. With this configuration, since there is no mechanically movable part of the conveyor in the furnace, the heat efficiency is excellent, and no dust is brought in or generated by the mechanically movable part.

【0005】[0005]

【発明が解決しようとする課題】ところで、このよう
に、コンベアの機械的可動部分を炉外に配しても、乾燥
炉はその両端にワークを出し入れする出入口が形成され
ているため、ワークが出入口を通過するときなどに外気
と共に外気に含まれる微小な塵埃が炉内に持ち込まれ
る。また、乾燥炉内に吹き出される熱風はフィルタなど
の浄化装置を通過しているので清浄であるが、それでも
浄化装置で除去できなかった極めて小さな塵埃が炉内に
持ち込まれる。
By the way, even if the mechanically movable part of the conveyor is arranged outside the furnace as described above, the drying furnace is provided with entrances for taking in and out the work at both ends thereof. When passing through an entrance or the like, fine dust contained in the outside air is brought into the furnace together with the outside air. The hot air blown into the drying furnace is clean because it passes through a purifying device such as a filter, but extremely small dust that cannot be removed by the purifying device is brought into the furnace.

【0006】 そして、これらの塵埃は、極めて微小で
あるので、直接塗膜に付着しても塗膜に悪影響を与える
ことはないが、炉内に舞い上がったり床面に降り落ちた
りを繰り返している間に、塵埃が核となって炉内空気に
含まれる有機溶剤成分がその表面に凝集し、これらが互
いにくっついて粗大化し、次第に、塗膜に悪影響を与え
る程度の大きさに成長してしまう。
[0006] Since these dusts are extremely minute, they do not adversely affect the coating film even if they adhere directly to the coating film, but they repeatedly fly up into the furnace or fall down to the floor. In the meantime, dust becomes a nucleus and organic solvent components contained in the furnace air agglomerate on the surface, and they adhere to each other, coarsen, and gradually grow to a size that adversely affects the coating film. .

【0007】 特に最近では、炉内の前段側に設置され
る輻射加熱ゾーン(暗赤ゾーン)でも、その後段に設置
される対流加熱ゾーンでも、乾燥しにくいワークの下面
に向かって熱風を勢い良く吹き付ける熱風吹出ノズルを
設けたものがあり、このタイプの乾燥炉で乾燥させた場
合、通常の乾燥炉では舞い上がることのない大きな塵埃
まで舞い上がり、これが塗膜面に付着して塗装不良を起
こすという問題があった。このため、塗装不良を生じさ
せないようにするには、頻繁に炉内の清掃作業を行わな
ければならず、非常に手間がかかり面倒であった。
[0007] In recent years, in both the radiant heating zone (dark red zone) installed in the front stage of the furnace and the convection heating zone installed in the subsequent stage, hot air is vigorously directed toward the lower surface of the work that is difficult to dry. Some types have a hot-air blowing nozzle that blows out.When dried in this type of drying furnace, large dust that does not fly up in a normal drying furnace will fly up, and this will adhere to the coating film surface and cause coating failure. was there. For this reason, in order to prevent the occurrence of coating defects, the inside of the furnace must be cleaned frequently, which is very troublesome and troublesome.

【0008】 そこで本発明は、塵埃が塗装不良を起こ
す大きさまで成長することを阻止することができ、した
がって、塵埃が塗膜に付着することに起因する塗装不良
を生ずることがなく、塗装品質の向上を図ると共に、乾
燥炉の清掃作業に要する手間と面倒を軽減することを技
術的課題としている。
Accordingly, the present invention can prevent dust from growing to a size that causes coating defects, and therefore does not cause coating defects due to dust adhering to the coating film, and reduces coating quality. It is a technical task to improve and to reduce the trouble and trouble required for the cleaning operation of the drying furnace.

【0009】[0009]

【課題を解決するための手段】この課題を解決するため
に、本発明は、ワークを搬送するコンベアがトンネル型
の炉本体に沿って配設され、前記コンベアは、ワークを
載置する架台が、炉本体の床下に敷設されたコンベアレ
ールを走行するベースに所要高さの支柱を介して取り付
けられると共に、当該支柱がその搬送方向に沿って炉本
体の床壁に形成されたスリットから炉本体に貫通されて
前記架台に載置したワークを炉内で移動させるようにな
された乾燥炉において、炉本体は、その床面が左右両側
から前記スリットに向かう下り勾配の傾斜面に形成さ
れ、左右側壁には、床面の近傍に、床面に沿ってその左
右両側から前記スリットに向かう空気流を形成する熱風
吹出ノズルが配設されたことを特徴とする。
In order to solve this problem, the present invention provides a conveyor for conveying a work, which is disposed along a tunnel-type furnace body, wherein the conveyor has a gantry on which the work is placed. Is attached to a base running on a conveyor rail laid under the floor of the furnace body via a column having a required height, and the column is formed through a slit formed in a floor wall of the furnace body along the transport direction. In a drying furnace, the work placed on the gantry is moved through the furnace, and the furnace body has a floor surface formed on a downwardly sloped surface facing the slit from both left and right sides. On the side wall, a hot-air blowing nozzle for forming an airflow from both the left and right sides toward the slit along the floor is provided near the floor.

【0010】 本発明によれば、ワークを載置する架台
が、炉外床下に敷設されたコンベアレール上を走行する
ベースに所要高さの支柱を介して取り付けられ、当該支
柱を炉本体の床壁に形成したスリットから炉内に貫装し
て前記架台に載置したワークを炉内で搬送する。ここ
で、左右側壁の床面近傍に配設した熱風吹出ノズルから
熱風を吹き出させると、床面に沿って左右両側からスリ
ットに向かう空気流が形成される。このとき、炉内に持
ち込まれた微小な塵埃は、炉内で舞っている間に有機溶
剤成分がその表面に凝集して、これらが互いにくっつい
て粗大化する。そして、自重により炉内の床面に落ちる
と、床面に沿って形成された空気流でスリットまで運ば
れ、スリットから炉外に排出されてしまうため、塗膜に
悪影響を与えるまで成長することがなく、したがって、
塗装不良を生ずるような塵埃が塗膜に付着することもな
い。
[0010] According to the present invention, the gantry on which the workpiece is placed is attached to the base running on the conveyor rail laid under the furnace outer floor via the support having a required height, and the support is mounted on the floor of the furnace main body. The work mounted on the gantry after being inserted into the furnace through the slit formed in the wall is conveyed in the furnace. Here, when hot air is blown out from the hot air blowing nozzles disposed near the floor surface on the left and right side walls, an airflow is formed along the floor surface from both the left and right sides to the slit. At this time, the fine dust brought into the furnace is agglomerated by the organic solvent component aggregating on its surface while flying in the furnace, and sticking to each other. And, when it falls on the floor in the furnace due to its own weight, it is carried to the slit by the airflow formed along the floor and discharged out of the furnace from the slit, so that it grows until it adversely affects the coating film There is no
Dust that would cause poor painting does not adhere to the coating film.

【0011】 また、コンベアレールを炉本体に沿って
その床下に形成したコンベアピット内に敷設すると共
に、当該コンベアピットの底部にホッパを形成しておけ
ば、前記スリットを通して炉内から排出された塵埃が、
ホッパ内に落とし込まれて回収される。この場合に、メ
ンテナンスは、ホッパ内にある程度塵埃が溜まったとこ
ろで清掃すれば足り、清掃が簡単でその手間や面倒が軽
減され、さらに、乾燥炉から排出された塵埃が塗装工場
内に撒き散らされることもない。なお、コンベアピット
は、コンベアレールや駆動チェーンなどを配設するため
に炉本体の床下に形成した溝状の空間の意味に用い、乾
燥炉の床壁を設置面より高い位置に構築する場合に床壁
と設置面の間に形成する場合に限らず、乾燥炉の床壁を
設置面と同じ高さに構築する場合に設置面を掘って形成
するものであってもよい。
In addition, if a conveyor rail is laid along a furnace body in a conveyor pit formed below the floor and a hopper is formed at the bottom of the conveyor pit, dust discharged from the furnace through the slit is formed. But,
Dropped into the hopper and collected. In this case, it is sufficient to perform maintenance when dust is accumulated in the hopper to a certain extent, and it is easy to clean, and the trouble and trouble are reduced. Not even. In addition, the conveyor pit is used to mean a groove-like space formed under the floor of the furnace body for arranging conveyor rails, drive chains, etc., and when the floor wall of the drying furnace is constructed at a position higher than the installation surface The present invention is not limited to the case where the floor is formed between the floor wall and the installation surface, and may be formed by digging the installation surface when the floor wall of the drying furnace is constructed at the same height as the installation surface.

【0012】[0012]

【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて具体的に説明する。図1は本発明に係る乾燥
炉を示す正面図である。なお、説明の便宜上、図1にお
いて右半分が輻射加熱タイプの加熱ゾーン、左半分が対
流加熱タイプの加熱ゾーンを示す。
Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a front view showing a drying furnace according to the present invention. For convenience of description, the right half in FIG. 1 shows a radiant heating type heating zone, and the left half shows a convection heating type heating zone.

【0013】 本例の乾燥炉1は、自動車ボディなどの
ワークWをコンベア2で搬送しながら乾燥させるトンネ
ル型に形成され、その前段に輻射加熱ゾーン1Aが形成
されると共に、その後段に対流加熱ゾーン1Bが形成さ
れている。前記コンベア2は、ワークWを載置する架台
4が、炉本体3に沿ってその床下に形成されたコンベア
ピット5に敷設されたコンベアレール6を走行するベー
ス7に、所要高さの支柱8を介して取り付けられ、支柱
8がその搬送方向に沿って床壁3Fに形成されたスリッ
ト9から炉内に貫通された状態で走行するように成され
ている。したがって、架台4にワークWを載せてコンベ
ア2を走行させると、ベース7は炉外のコンベアピット
5内を走行し、架台4に載置されたワークWは炉内で搬
送される。また、コンベアピット5はコンベアレール6
及びその駆動チェーンCなどを配設するために炉本体3
の床下に形成した溝状の空間であって、図1に示すよう
に、乾燥炉1の床壁3Fを設置面Gより高い位置に構築
する場合に床壁3Fと設置面Gの間に形成する場合に限
らず、乾燥炉1の床壁3Fを設置面Gと同じ高さに構築
する場合に設置面Gを掘って形成するものであってもよ
い。
The drying furnace 1 of the present embodiment is formed in a tunnel type for drying a workpiece W such as an automobile body while being conveyed by a conveyor 2, and a radiant heating zone 1A is formed in a preceding stage thereof, and convection heating is performed in a subsequent stage thereof. Zone 1B is formed. The conveyor 2 has a base 4 on which a work 4 on which a workpiece W is placed runs on a conveyor rail 6 laid on a conveyor pit 5 formed under the floor along the furnace main body 3, and a support 8 having a required height. The column 8 is configured to run in a state where the column 8 penetrates into the furnace along a transport direction thereof through a slit 9 formed in the floor wall 3F. Therefore, when the work W is placed on the gantry 4 and the conveyor 2 is run, the base 7 runs in the conveyor pit 5 outside the furnace, and the work W placed on the gantry 4 is conveyed in the furnace. Also, the conveyor pit 5 is a conveyor rail 6
And the furnace body 3 for disposing the drive chain C and the like.
1 is formed between the floor wall 3F and the installation surface G when the floor wall 3F of the drying furnace 1 is constructed at a position higher than the installation surface G as shown in FIG. When the floor wall 3F of the drying furnace 1 is constructed at the same height as the installation surface G, the installation surface G may be dug and formed.

【0014】 炉本体3は、その天井壁3U,左右側壁
3L,3R,床壁3Fが断熱構造に形成され、床面3f
は、左右両側からスリット9に向かう下り勾配の傾斜面
に形成されている。そして、炉内を加熱するために、輻
射加熱ゾーン1Aの左右両側には、220〜230℃前
後の加熱空気を循環させて輻射熱を放射する熱風循環ダ
クト(輻射パネル)10が配設され、対流加熱ゾーン1
Bの左右両側には、180℃前後の加熱空気を吹き出す
熱風吹出ダクト11が配設されている。
The furnace body 3 has a ceiling wall 3U, left and right side walls 3L and 3R, and a floor wall 3F formed in a heat insulating structure, and a floor surface 3f.
Are formed on a downwardly inclined surface facing the slit 9 from both left and right sides. In order to heat the inside of the furnace, hot air circulation ducts (radiation panels) 10 for circulating heated air at about 220 to 230 ° C. and radiating radiant heat are provided on both left and right sides of the radiant heating zone 1A. Heating zone 1
On both left and right sides of B, hot air blowing ducts 11 for blowing heated air at about 180 ° C. are provided.

【0015】 また、いずれの加熱ゾーン1A,1Bに
も、左右側壁3L,3Rの床面3f近傍(例えば床面3
fから10〜50cm程度の高さ)に、ワークWの下面
を乾燥させるために床面3fに沿って左右両側から中央
のスリット9に向かう略水平の空気流を形成する熱風吹
出ノズル12が、炉本体3の長手方向に沿って各ダクト
10,11に所定間隔で開口形成されている。この熱風
吹出ノズル12の正面には、ディフューザ13が配設さ
れて、当該ノズル12とディフューザ13とでエゼクタ
14が形成され、ノズル12から吹き出された熱風がデ
ィフューザ13ののど部を通過するときに周囲の空気を
吸い込んで、ノズル12から吹き出される風量以上の風
量で空気を噴射するようになされている。
[0015] In each of the heating zones 1A, 1B, the vicinity of the floor surface 3f of the left and right side walls 3L, 3R (for example, the floor surface 3
(a height of about 10 to 50 cm above f), a hot air blowing nozzle 12 that forms a substantially horizontal air flow from both left and right sides toward the central slit 9 along the floor surface 3f to dry the lower surface of the work W, Openings are formed at predetermined intervals in each of the ducts 10 and 11 along the longitudinal direction of the furnace body 3. A diffuser 13 is provided in front of the hot air blowing nozzle 12, and an ejector 14 is formed by the nozzle 12 and the diffuser 13. When the hot air blown out from the nozzle 12 passes through the throat of the diffuser 13, Ambient air is sucked in, and air is blown at a flow rate equal to or greater than the flow rate blown out from the nozzle 12.

【0016】 なお、ディフューザ7は、その入口が熱
風吹出ノズル12の開口部から所定間隔だけ離されて、
入口と出口の中心を結ぶ流線が前記熱風吹出ノズル12
の吹出方向に一致するように配設されている。ここで、
熱風吹出ノズル12の吹出方向は水平の場合に限らず、
床面3fに沿った空気流を形成することができるもので
あれば、例えば、床面3fに向けて若干下向きに形成さ
れたものであってもよい。
The diffuser 7 has its inlet separated from the opening of the hot air blowing nozzle 12 by a predetermined distance,
The streamline connecting the center of the inlet and the outlet is the hot air blowing nozzle 12.
Are arranged so as to coincide with the blowing direction. here,
The blowing direction of the hot air blowing nozzle 12 is not limited to the horizontal direction,
As long as it can form an airflow along the floor 3f, for example, it may be formed slightly downward toward the floor 3f.

【0017】 また、コンベアピット5には、その底部
に、前記スリット9を通して炉本体3から落とし込まれ
た塵埃を傾斜面15に沿って凹部16内に回収するホッ
パ17が形成されており、ホッパ17の上方には傾斜面
15に沿って洗浄液を凹部16内に流し込む洗浄液供給
設備18が設けられ、ホッバ17には凹部16内に流入
した洗浄液を排液する排液設備19が設けられている。
洗浄液供給設備18は、例えば、長手方向に所定間隔で
流出口が形成された供給配管やオーバーフロー樋など任
意のものを採用し得る。排液設備19は、排液管が接続
されている場合であっても、また、必要に応じて排液管
を接続する排液口が形成されている場合であってもよ
い。
In the bottom of the conveyor pit 5, a hopper 17 for collecting dust dropped from the furnace main body 3 through the slit 9 along the inclined surface 15 into the concave portion 16 is formed. Above 17, there is provided a cleaning liquid supply device 18 for flowing the cleaning liquid into the concave portion 16 along the inclined surface 15, and a hobber 17 is provided with a drainage device 19 for discharging the cleaning liquid flowing into the concave portion 16. .
As the cleaning liquid supply equipment 18, for example, an arbitrary one such as a supply pipe or an overflow gutter having outflow ports formed at predetermined intervals in a longitudinal direction can be adopted. The drainage device 19 may be a case where a drainage pipe is connected, or a case where a drainage port for connecting the drainage pipe is formed as necessary.

【0018】 以上が本発明の一例構成であって、次に
その作用について、本発明に係る乾燥炉を自動車ボディ
を塗装する塗装ラインの塗装乾燥炉として設置した場合
について説明する。まず、輻射加熱ゾーン1Aの熱風循
環ダクト10及び対流加熱ゾーン1Bの熱風吹出ダクト
11に熱風を供給して乾燥炉1を立ち上げ、次いで、コ
ンベア2を起動させてワークWを搬送すると、ワークW
は輻射加熱ゾーン1Aを通過するときは主として熱風循
環ダクト10の輻射熱により、また、対流加熱ゾーン1
Bを通過するときは熱風吹出ダクト11から炉内に吹き
出される熱風により加熱されて乾燥される。
The above is an example of the configuration of the present invention, and its operation will be described next with respect to a case where the drying furnace according to the present invention is installed as a coating drying furnace of a coating line for coating an automobile body. First, hot air is supplied to the hot-air circulation duct 10 in the radiant heating zone 1A and the hot-air blowing duct 11 in the convection heating zone 1B to start up the drying furnace 1, and then the conveyor 2 is started to transport the work W.
Is mainly due to the radiant heat of the hot air circulation duct 10 when passing through the radiant heating zone 1A.
When passing through B, it is heated and dried by the hot air blown into the furnace from the hot air blowing duct 11.

【0019】 また、これと同時に、各ゾーン1A,1
Bの左右側壁3L,3Rに配設された熱風吹出ノズル1
2から熱風が吹き出されて、床面3fに沿って左右両側
から中央のスリット9に向かう空気流が形成され、ワー
クWの下面が乾燥される。このとき、乾燥炉1の出入口
から流入する外気や、乾燥炉1内に吹き出される熱風に
含まれる微小な塵埃が炉内で舞っている間に、その表面
に炉内空気に含まれる有機溶剤成分が凝集し、これらが
互いにくっついて粗大化する。そして、自重により炉内
の床面3fに落ちると、熱風吹出ノズル12により形成
された空気流によりスリット9に向かって吹き動かされ
る。
At the same time, each zone 1A, 1
Hot air blow-out nozzle 1 disposed on left and right side walls 3L, 3R of B
Hot air is blown out of the work 2 to form an airflow from both left and right sides to the center slit 9 along the floor 3f, and the lower surface of the work W is dried. At this time, while the outside air flowing in from the entrance and exit of the drying furnace 1 and the minute dust contained in the hot air blown into the drying furnace 1 are flying in the furnace, the organic solvent contained in the air in the furnace is formed on the surface thereof. The components agglomerate and stick together to coarsen. Then, when it falls on the floor 3f in the furnace by its own weight, it is blown toward the slit 9 by the air flow formed by the hot air blowing nozzle 12.

【0020】 そして、塵埃は下り勾配の傾斜面に形成
された床面3fをスリット9に向かってスムースに移動
し、熱風吹出ノズル12により形成された空気流に乗っ
て、スリット9からコンベアピット5内に排出され、炉
本体3から除去されるので、炉内は清浄に維持され塗装
不良を生ずることがなく、塗装品質が向上される。ま
た、床面3fに塵埃が堆積しないので、きれいな状態に
維持され、乾燥炉1の清掃頻度が低減される。
Then, the dust smoothly moves on the floor surface 3 f formed on the downwardly inclined surface toward the slit 9, rides on the air flow formed by the hot air blowing nozzle 12, and passes from the slit 9 to the conveyor pit 5. Since the gas is discharged into the furnace and is removed from the furnace body 3, the inside of the furnace is kept clean and no coating failure occurs, and the coating quality is improved. Further, since dust does not accumulate on the floor 3f, it is maintained in a clean state, and the frequency of cleaning the drying furnace 1 is reduced.

【0021】 コンベアピット5内に落とし込まれた塵
埃は、ホッパ17の傾斜面15に沿って凹部16に溜ま
っていくので塗装工場内に撒き散らされることがなく、
また、ある程度の量が溜まった時点で、洗浄液供給設備
18により洗浄液を流して排水設備19から排水するこ
とにより、簡単に清掃することができ、その手間や面倒
が軽減される。
The dust dropped into the conveyor pit 5 accumulates in the concave portion 16 along the inclined surface 15 of the hopper 17, so that the dust is not scattered in the coating factory.
Further, when a certain amount of the liquid is accumulated, the cleaning liquid is supplied from the cleaning liquid supply equipment 18 and drained from the drainage equipment 19, whereby the cleaning can be easily performed, and the trouble and trouble can be reduced.

【0022】 なお、炉内に熱風を吹き出す熱風吹出ノ
ズル12の正面にはディフューザ13が配されてエゼク
タ14となっているので、熱風吹出ノズル12から吹き
出された熱風がディフューザ13ののど部を通過すると
きに、周囲の空気をディフューザ13の入口から吸い込
んで、熱風吹出ノズル12から吹き出された熱風と共
に、その数倍の風量の熱風が炉内に勢い良く吹き出され
る。したがって、熱風供給ダクト10,11から吹き出
させる風量が僅かであっても、塵埃をスリット9からコ
ンベアピット5内に確実に排出することができる。
Since the diffuser 13 is disposed in front of the hot air blowing nozzle 12 that blows hot air into the furnace and serves as an ejector 14, the hot air blown from the hot air blowing nozzle 12 passes through the throat of the diffuser 13. At this time, the surrounding air is sucked in from the inlet of the diffuser 13, and the hot air blown out of the hot air blow-out nozzle 12 and the hot air having a volume several times as large as the hot air blown out into the furnace. Therefore, even if the amount of air blown from the hot air supply ducts 10 and 11 is small, dust can be reliably discharged from the slit 9 into the conveyor pit 5.

【0023】 また、輻射加熱ゾーン1Aの熱風循環ダ
クト10には220〜230℃の高温の加熱空気が供給
され、対流加熱ゾーン1Bの熱風循環ダクト11には1
80℃前後の加熱空気が供給されるが、熱風吹出ノズル
12から吹き出された熱風は、ディフューザ13の入口
から吸引された炉内空気と混合されて、炉内温度に近い
温度まで低下されるので、オーバーベイクを起こすこと
もない。
The hot air circulating duct 10 in the radiant heating zone 1A is supplied with high-temperature heating air at 220 to 230 ° C.
Although heated air at about 80 ° C. is supplied, the hot air blown out from the hot air blowing nozzle 12 is mixed with the furnace air sucked from the inlet of the diffuser 13 and lowered to a temperature close to the furnace temperature. No overbake.

【0024】[0024]

【発明の効果】以上述べたように本発明によれば、微小
な塵埃が炉内で舞っている間に粗大化しても、自重によ
り炉内の床面に落ちた時点で、床面に沿って形成された
空気流でスリットまで運ばれ、スリットから炉外に排出
されてしまうため、塗膜に悪影響を与えるまで成長する
ことがなく、塗装品質の向上を図ることができるという
大変優れた効果を奏する。また、炉内から排出した塵埃
をコンベアピットの底部に形成したホッパで回収すれ
ば、塗装工場内に塵埃を撒き散らすことがなく、また、
ホッパ内に洗浄液を供給することにより、溜まった塵埃
を洗浄液で簡単に洗い流すことができるので、そのメン
テナンスが極めて簡単に済むという効果もある。
As described above, according to the present invention, even if minute dust particles are coarsened while flying in the furnace, the particles fall along the floor surface when they fall on the floor surface in the furnace by their own weight. It is transported to the slit by the formed air flow and is discharged out of the furnace from the slit, so it does not grow until it adversely affects the coating film, and it is possible to improve the coating quality, which is an excellent effect. To play. In addition, if the dust discharged from the furnace is collected by the hopper formed at the bottom of the conveyor pit, the dust will not be scattered in the coating factory,
By supplying the cleaning liquid into the hopper, the accumulated dust can be easily washed away with the cleaning liquid, so that there is also an effect that the maintenance is extremely simple.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明に係る乾燥炉を示す正面図。FIG. 1 is a front view showing a drying furnace according to the present invention.

【符号の説明】[Explanation of symbols]

1・・・・乾燥炉 W・・・・ワーク 2・・・・コンベア 3・・・・炉本体 3F・・・床壁 3f・・・床面 4・・・・架台 5・・・・コンベアピット 6・・・・コンベアレール 7・・・・ベース 8・・・・支柱 9・・・・スリット 10・・・・熱風循環ダクト 11・・・・熱風吹出ダクト 12・・・・熱風吹出ノズル 17・・・・ホッパ 1 Drying furnace W Work 2 Conveyor 3 Furnace body 3F Floor wall 3f Floor 4 Stand 5 Conveyor Pit 6 ... Conveyor rail 7 ... Base 8 ... Support 9 ... Slit 10 ... Hot air circulation duct 11 ... Hot air blowing duct 12 ... Hot air blowing nozzle 17 ··· Hopper

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 ワーク(W)を搬送するコンベア(2)
がトンネル型の炉本体(3)に沿って配設され、前記コ
ンベア(2)は、ワーク(W)を載置する架台(4)
が、炉本体(3)の床下に敷設されたコンベアレール
(6)を走行するベース(7)に所要高さの支柱(8)
を介して取り付けられると共に、当該支柱(8)がその
搬送方向に沿って炉本体(3)の床壁(3F)に形成され
たスリット(9)から炉本体(3)に貫通されて前記架
台(4)に載置したワーク(W)を炉内で移動させるよ
うになされた乾燥炉において、炉本体(3)は、その床
面(3f)が左右両側から前記スリット(9)に向かう下
り勾配の傾斜面に形成され、左右側壁(3L,3R)には、
床面(3f)の近傍に、床面(3f)に沿ってその左右両側
から前記スリット(9)に向かう空気流を形成する熱風
吹出ノズル(12)が配設されたことを特徴とする乾燥
炉。
A conveyor (2) for transporting a work (W).
Is disposed along a tunnel-type furnace body (3), and the conveyor (2) includes a gantry (4) on which a workpiece (W) is placed.
Is mounted on a base (7) running on a conveyor rail (6) laid under the floor of the furnace body (3), and a support (8) having a required height.
And the support (8) is penetrated through the furnace body (3) from the slit (9) formed in the floor wall (3F) of the furnace body (3) along the transport direction thereof, and In the drying furnace in which the work (W) placed on (4) is moved in the furnace, the furnace body (3) has a floor surface (3f) descending from both left and right sides toward the slit (9). It is formed on the slope of the slope, and on the left and right side walls (3L, 3R),
A drying device, characterized in that a hot air blowing nozzle (12) for forming an air flow from both right and left sides of the floor surface (3f) toward the slit (9) is provided near the floor surface (3f). Furnace.
【請求項2】 前記コンベアレール(6)が、炉本体
(3)に沿ってその床下に形成されたコンベアピット
(5)内に敷設され、当該コンベアピット(5)の底部
に、前記スリット(9)を通して炉本体(3)から落と
し込まれる塵埃を回収するホッパ(17)が形成されて成
る請求項1記載の乾燥炉。
2. The conveyor rail (6) is laid in a conveyor pit (5) formed under the floor along the furnace body (3), and the slit (5) is formed at the bottom of the conveyor pit (5). The drying furnace according to claim 1, further comprising a hopper (17) for collecting dust dropped from the furnace body (3) through (9).
JP35900097A 1997-12-26 1997-12-26 drying furnace Expired - Lifetime JP3793631B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP35900097A JP3793631B2 (en) 1997-12-26 1997-12-26 drying furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP35900097A JP3793631B2 (en) 1997-12-26 1997-12-26 drying furnace

Publications (2)

Publication Number Publication Date
JPH11188308A true JPH11188308A (en) 1999-07-13
JP3793631B2 JP3793631B2 (en) 2006-07-05

Family

ID=18462226

Family Applications (1)

Application Number Title Priority Date Filing Date
JP35900097A Expired - Lifetime JP3793631B2 (en) 1997-12-26 1997-12-26 drying furnace

Country Status (1)

Country Link
JP (1) JP3793631B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040048779A (en) * 2002-12-04 2004-06-10 김선오 Energy-saving Far-Infrared Coating Dryer
CN103680908A (en) * 2013-09-30 2014-03-26 广东冠能电力科技发展有限公司 Technology for internal surface small space protection in air flue of dry-type air-core reactor
KR200474901Y1 (en) * 2013-06-26 2014-10-22 청송기계(주) Drying device for shell molding
CN113275221A (en) * 2021-07-21 2021-08-20 南通维益机电有限公司 Baking finish device is used in machine part production

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040048779A (en) * 2002-12-04 2004-06-10 김선오 Energy-saving Far-Infrared Coating Dryer
KR200474901Y1 (en) * 2013-06-26 2014-10-22 청송기계(주) Drying device for shell molding
CN103680908A (en) * 2013-09-30 2014-03-26 广东冠能电力科技发展有限公司 Technology for internal surface small space protection in air flue of dry-type air-core reactor
CN103680908B (en) * 2013-09-30 2016-03-30 广东冠能电力科技发展有限公司 The process for protecting in the little space of dry-type air-core reactor air flue inner surface
CN113275221A (en) * 2021-07-21 2021-08-20 南通维益机电有限公司 Baking finish device is used in machine part production

Also Published As

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