JPS6087848A - Ultraviolet irradiation furnace - Google Patents
Ultraviolet irradiation furnaceInfo
- Publication number
- JPS6087848A JPS6087848A JP19660883A JP19660883A JPS6087848A JP S6087848 A JPS6087848 A JP S6087848A JP 19660883 A JP19660883 A JP 19660883A JP 19660883 A JP19660883 A JP 19660883A JP S6087848 A JPS6087848 A JP S6087848A
- Authority
- JP
- Japan
- Prior art keywords
- furnace body
- ultraviolet lamp
- furnace
- quartz tube
- air
- 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.)
- Pending
Links
- 239000010453 quartz Substances 0.000 claims abstract description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 239000011347 resin Substances 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 4
- 239000013307 optical fiber Substances 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- 239000005062 Polybutadiene Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 229920002857 polybutadiene Polymers 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
- B01J19/122—Incoherent waves
- B01J19/123—Ultraviolet light
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Coating Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は紫外線硬化樹脂に紫外線を照射するための紫外
線照射炉に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an ultraviolet irradiation furnace for irradiating an ultraviolet curing resin with ultraviolet rays.
光ファイバなどの線材表面に紫外線硬化型樹脂を塗布し
、これを焼き付【Ｊる場合に紫外線照射炉が用いられて
いる。従来この種の照射炉では、炉体内部に管状の紫外
線ランプが露出して設置されており、この紫外線ランプ
が安定に作動づ−るたＣν〕には紫外線ランプの表面温
度を７００〜１０００℃に保持する必要がある。そのた
め、炉体内部に紫外線ランプが露出している場合、炉体
内にカス（空気）を流入させることによって紫外線ラン
プの表面を冷却して７００〜１０００℃に保持しなけれ
ばならない。従来のこのような紫外線照射炉においては
、炉体内部が高温にさらされるため、前記被覆用樹脂が
高温に加熱されることによって劣化する、反射板となる
炉壁内表面が高温によって傷みやすく耐久性に乏しい、
などの欠点があった。An ultraviolet irradiation furnace is used to coat the surface of a wire such as an optical fiber with ultraviolet curable resin and then bake it. Conventionally, in this type of irradiation furnace, a tubular ultraviolet lamp is installed exposed inside the furnace body, and in order for this ultraviolet lamp to operate stably, the surface temperature of the ultraviolet lamp must be set at 700 to 1000°C. need to be maintained. Therefore, when the ultraviolet lamp is exposed inside the furnace body, the surface of the ultraviolet lamp must be cooled and maintained at a temperature of 700 to 1000° C. by allowing dregs (air) to flow into the furnace body. In conventional ultraviolet irradiation furnaces, the inside of the furnace body is exposed to high temperatures, so the coating resin deteriorates when heated to high temperatures, and the inner surface of the furnace wall, which serves as a reflector, is easily damaged by high temperatures and has poor durability. lacking in sex,
There were drawbacks such as.
本発明は、これら線材被覆用樹脂の劣化、反射板となる
炉壁内表面の短寿命等の欠点を除去するため、紫外線ラ
ンプと炉体内との冷却を個別に行うもので、以下図面に
ついて詳細に説明り−る。In order to eliminate these drawbacks such as deterioration of the wire coating resin and short life of the inner surface of the furnace wall that serves as a reflector, the present invention cools the ultraviolet lamp and the inside of the furnace separately. I will explain.
第１図は本発明の一実施例を示ず縦断面図であって横断
面が楕円形よりなる筒状の炉体３の前記楕円形の一方の
焦点には管状の紫外線ランプ１が石英管２に覆われて設
置され、他方の焦点には６英管４が設置されており、こ
の石英管４の内部を線材（光ファイバ）１０が通過する
ようになされている。炉体３内部は給気口８がら空気を
ブローし、排気ロアから排気することにより、この空気
で冷却され、紫外線ランプ１は、給気口５がらブローさ
れた空気が石ｉＡ管２の内部を流通して、排気口６から
排気される空気によって冷却され、この空気が炉体内部
を流れる空気とは仕切片９ａ。FIG. 1 is a vertical cross-sectional view showing an embodiment of the present invention, in which a tubular ultraviolet lamp 1 is mounted in a quartz tube at one focal point of the elliptical shape of a cylindrical furnace body 3 having an elliptical cross section. A hexagonal quartz tube 4 is installed at the other focal point, and a wire (optical fiber) 10 passes through the inside of this quartz tube 4. The inside of the furnace body 3 is cooled by blowing air through the air supply port 8 and exhausting it from the exhaust lower. The air is cooled by the air flowing through the exhaust port 6, and this air is separated from the air flowing inside the furnace by a partition piece 9a.
９ｂによって気密的に区分されることにより、炉体３と
は別個に冷却されるようになされている。By being airtightly divided by 9b, it is cooled separately from the furnace body 3.
なお、第２図は第１図の■−■線に沿う横断面図を示す
。この実施例の紫外線照射炉はこのような椛造になって
いるから、紫外線ランプ１の表面は比較的高温に保たれ
るために紫外線ランプ１の放電が安定すると同時に、温
度を精密に制御することに・より紫外線ランプの寿命を
、ひいては紫外線照射炉の寿命を長くすることができる
。一方、炉体内部は紫外線ランプ１の周囲とは別個に冷
却空気を多量に流されることによって温度を低く保つこ
とができるため、線材１ｏの加熱温度を低下させて線材
１０の被覆樹脂の劣化が防がれ、また、炉壁内面即ち紫
外線反射面の劣化も少なく夛ることができる。この実施
例では発光長５００ ｍｍ、入力４ＫＷの高圧水銀灯を
紫外線ランプとして用い、光ファイバにＵ■硬化型ポリ
ブタジェンアクリレートを塗布した。紫外線ランプの定
格入力時に（１３いて、石英管内部は３８０℃以下、紫
外線ランプの周囲は８２０〜８８０℃、炉壁反射面表面
温度は１３０’ＣＪＸ下に保つことができた。この時外
径１２５μｍの光ファイバにポリブタジェンアクリレー
トを厚さ５０μｍで塗布した場合、線速４５０ｍ／Ｎｉ
１までその硬化が可能であり、線材被覆樹脂の劣化はほ
とんど認められなかった。なお、第１図及び第２図中１
１．１２は円孔、１３．１４は隔壁である。Note that FIG. 2 shows a cross-sectional view taken along the line ■-■ in FIG. 1. Since the ultraviolet irradiation furnace of this embodiment has such a structure, the surface of the ultraviolet lamp 1 is kept at a relatively high temperature, so that the discharge of the ultraviolet lamp 1 is stabilized, and at the same time, the temperature can be precisely controlled. In particular, the life of the ultraviolet lamp and, by extension, the life of the ultraviolet irradiation furnace can be extended. On the other hand, the temperature inside the furnace body can be kept low by flowing a large amount of cooling air separately from the area around the ultraviolet lamp 1, so the heating temperature of the wire rod 1o is lowered and the deterioration of the coating resin of the wire rod 10 is prevented. In addition, deterioration of the inner surface of the furnace wall, that is, the ultraviolet reflection surface, can be prevented. In this example, a high-pressure mercury lamp with a light emission length of 500 mm and an input power of 4 KW was used as an ultraviolet lamp, and an optical fiber was coated with U-curing polybutadiene acrylate. At the rated input of the ultraviolet lamp (13), the inside of the quartz tube was kept below 380°C, the area around the ultraviolet lamp was 820-880°C, and the surface temperature of the furnace wall reflective surface was kept below 130'CJX.At this time, the outer diameter When a 125 μm optical fiber is coated with polybutadiene acrylate to a thickness of 50 μm, the linear velocity is 450 m/Ni
It was possible to cure the resin up to 1, and almost no deterioration of the wire coating resin was observed. In addition, 1 in Figures 1 and 2
1.12 is a circular hole, and 13.14 is a partition wall.
なお、前記実施例では、横断面形状が１つの楕円形から
なる炉壁反射面を有する炉体を用いたが、これに限られ
ることなく、横断面形状が１つの焦点を共通とする複数
の楕円形からなる第３図に示ずにうな炉壁反射面を有す
る炉体２１を適用してもよい。In the above embodiment, a furnace body having a furnace wall reflecting surface having one elliptical cross-sectional shape was used, but the present invention is not limited to this. A furnace body 21 having an elliptical wall reflecting surface (not shown in FIG. 3) may be used.
以上説明したようにこの発明によれば、紫外線ランプの
周囲を石英管で覆って炉体内を空間的に区分し、前記紫
外線ランプの周囲ど炉体内部とをそれぞれ個別に冷却す
るガス通路を設けた構成であるから、紫外線ランプの周
囲を炉体内部とは別個に冷却することができるため、紫
外線ランプの作動が安定し、紫外線ランプひいては紫外
線照射炉の寿命を長くづることができると同時に、被照
射体被覆樹脂を劣化させることなく高速で硬化させるこ
とができる。As explained above, according to the present invention, the quartz tube surrounds the ultraviolet lamp to spatially divide the inside of the furnace body, and gas passages are provided for separately cooling the area around the ultraviolet lamp and the inside of the furnace body. Because of this structure, the area around the UV lamp can be cooled separately from the inside of the furnace body, which stabilizes the operation of the UV lamp and extends the life of the UV lamp and ultimately the UV irradiation furnace. The resin coating the irradiated object can be cured at high speed without deteriorating.
第１図は本発明の一実施例を示す縦断面図、第２図は第
１図の■−■線に沿う横断面図、第３図は本発明の他の
実施例を示す第２図同様の横断面図である。
１・・・・・・紫外線ランプ、２，４・・・川石英管、
３゜２１・・・・・・炉体、５，８・・・・・・給気口
、６，７・・・・・・排気口、９・・・・・・支切板、
１０・・・・・・＃材（被照射体）。
第１図FIG. 1 is a longitudinal cross-sectional view showing one embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line ■-■ in FIG. 1, and FIG. 3 is a second view showing another embodiment of the present invention. FIG. 3 is a similar cross-sectional view. 1... Ultraviolet lamp, 2, 4... River quartz tube,
3゜21...furnace body, 5,8...air supply port, 6,7...exhaust port, 9...branch plate,
10...# material (irradiated object). Figure 1
Claims (1)
し、前記楕円形の一方の焦点に管状の紫外線ランプを位
置させ、他方の焦点に被照射体を位置させた紫外線照射
炉において、紫外線ランプの周囲を石英管で覆って炉体
内を空間的に区分し、前記紫外線ランプの周囲と炉体内
部とをそれぞれ個別に冷却する通路を設けたことを特徴
とする紫外線照射炉。An ultraviolet irradiation furnace having a cylindrical reflecting surface with an elliptical cross-sectional shape inside the furnace body, a tubular ultraviolet lamp being positioned at one focal point of the ellipse, and an irradiated object positioned at the other focal point. An ultraviolet irradiation furnace characterized in that the periphery of the ultraviolet lamp is covered with a quartz tube to spatially divide the inside of the furnace body, and passages are provided for separately cooling the periphery of the ultraviolet lamp and the inside of the furnace body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19660883A JPS6087848A (en) | 1983-10-20 | 1983-10-20 | Ultraviolet irradiation furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19660883A JPS6087848A (en) | 1983-10-20 | 1983-10-20 | Ultraviolet irradiation furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6087848A true JPS6087848A (en) | 1985-05-17 |
Family
ID=16360580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19660883A Pending JPS6087848A (en) | 1983-10-20 | 1983-10-20 | Ultraviolet irradiation furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6087848A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6161668A (en) * | 1984-08-31 | 1986-03-29 | Sumitomo Electric Ind Ltd | Ultraviolet irradiating device |
| KR970707050A (en) * | 1994-11-07 | 1997-12-01 | 조셉에이. 피쉬트 | Improved lamp cooling for a UV lamp reactor accembly |
-
1983
- 1983-10-20 JP JP19660883A patent/JPS6087848A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6161668A (en) * | 1984-08-31 | 1986-03-29 | Sumitomo Electric Ind Ltd | Ultraviolet irradiating device |
| KR970707050A (en) * | 1994-11-07 | 1997-12-01 | 조셉에이. 피쉬트 | Improved lamp cooling for a UV lamp reactor accembly |
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