JP2530724Y2 - Discharge lamp for UV irradiation - Google Patents
Discharge lamp for UV irradiationInfo
- Publication number
- JP2530724Y2 JP2530724Y2 JP7875490U JP7875490U JP2530724Y2 JP 2530724 Y2 JP2530724 Y2 JP 2530724Y2 JP 7875490 U JP7875490 U JP 7875490U JP 7875490 U JP7875490 U JP 7875490U JP 2530724 Y2 JP2530724 Y2 JP 2530724Y2
- Authority
- JP
- Japan
- Prior art keywords
- inner tube
- discharge lamp
- water
- tubular filter
- tube
- 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
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
【考案の詳細な説明】 [産業上の利用分野] 本考案は、光化学反応用放電灯に関し、該放電灯に用
いられる水冷ジャケット内の管状フィルタの係止部の改
良に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a discharge lamp for a photochemical reaction, and relates to an improvement in a locking portion of a tubular filter in a water cooling jacket used for the discharge lamp.
[従来の技術] 光化学反応用の紫外線照射用放電灯として、特開昭57
−197743号公報に記載のような水冷ジャケットを用いた
放電灯が提案されている。[Prior Art] As a discharge lamp for ultraviolet irradiation for photochemical reaction,
A discharge lamp using a water-cooled jacket as described in -197743 has been proposed.
第3図は水冷ジャケットの要部拡大断面図であり、図
中21は内管であり、その外周に紫外線を透過し熱線を吸
収する低融点ガラス製の管状フィルタ22を嵌装固定して
ある。該フィルタ22の一端はあらかじめ内管21に溶着さ
れた突起23に係止されており、他端はその外端部を内管
に溶着した係止片24の内端部に係止されている。25a,25
b,25cは内管の適所に設けた突起で管状フィルタ22が横
方向に偏るのを防止している。FIG. 3 is an enlarged sectional view of a main part of the water-cooling jacket. In the figure, reference numeral 21 denotes an inner tube, and a tubular filter 22 made of a low-melting glass that transmits ultraviolet rays and absorbs heat rays is fitted around the inner tube and fixed. . One end of the filter 22 is locked to a projection 23 welded to the inner tube 21 in advance, and the other end is locked to the inner end of a locking piece 24 whose outer end is welded to the inner tube. . 25a, 25
Reference numerals b and 25c denote protrusions provided at appropriate positions on the inner tube to prevent the tubular filter 22 from being biased in the lateral direction.
しかしながら、前記した構造では、製造の際の管状フ
ィルタへの熱的な影響については考慮しているが、放電
灯の点灯中、該水冷ジャケット内に水を循環させ、発光
管を冷却する場合のウォーターハンマー現象については
何ら考慮されていない。又、係止片の内管への溶着には
熟練を要するという欠点がある。However, in the above-described structure, the thermal effect on the tubular filter during manufacturing is taken into consideration, but when the discharge lamp is lit, water is circulated in the water cooling jacket to cool the arc tube. No consideration is given to the water hammer phenomenon. Further, there is a drawback that skill is required for welding the locking piece to the inner tube.
[考案が解決しようとする課題] 前記のように、従来は水冷ジャケット内のウォーター
ハンマー現象については何ら配慮がされておらず、管状
フィルタ用係止片の加工バラツキ等により内管からの脱
落が発生し、管状フィルタの破損あるいは内管のひびわ
れ等による水漏れが生じ、使用不良となるという問題点
がある。又、製造にも熟練を要するという問題点があ
る。[Problem to be Solved by the Invention] As described above, conventionally, no consideration has been given to the water hammer phenomenon in the water-cooled jacket. This causes water leakage due to breakage of the tubular filter or cracking of the inner tube, resulting in a use failure. In addition, there is a problem that skill is required for manufacturing.
[課題を解決するための手段] 本考案は前記に鑑みなされたもので、管状フィルタの
少なくとも一端は耐熱ガラス製の管状スペーサを介して
係止することを特徴とする。Means for Solving the Problems The present invention has been made in view of the above, and is characterized in that at least one end of a tubular filter is locked via a tubular spacer made of heat-resistant glass.
このように構成することにより、ウォーターハンマー
現象による水冷ジャケットの破損あるいは管状フィルタ
の脱落等を防止することができ、長寿命の放電灯を提供
することを目的とする。With such a configuration, it is possible to prevent the water cooling jacket from being damaged or the tubular filter from falling off due to the water hammer phenomenon, and to provide a long-life discharge lamp.
[実施例] 以下、本考案に係る実施例を図面に基づき説明する。
本考案は、第1図に示すように紫外線を放射する発光管
1の外周に内管2と外管3とからなる耐熱ガラス製の水
冷ジャケット4を設けてなり、かつ内管2の外周に紫外
線を透過し熱線を吸収する低融点ガラス製の管状フィル
タ5を装着してなり、該管状フィルタ5の係止部は第2
図の示すような構造となっている。管状フィルタ5の一
端は、あらかじめ内管2に溶着された突起6に係止され
ており、他端は管状の耐熱ガラス製のスペーサ7を介し
て係止用突起8に係止されている。[Example] Hereinafter, an example according to the present invention will be described with reference to the drawings.
In the present invention, as shown in FIG. 1, a water-cooled jacket 4 made of heat-resistant glass comprising an inner tube 2 and an outer tube 3 is provided on the outer periphery of an arc tube 1 that emits ultraviolet rays. A low-melting glass tubular filter 5 that transmits ultraviolet rays and absorbs heat rays is attached, and the locking portion of the tubular filter 5 is a second filter.
The structure is as shown in the figure. One end of the tubular filter 5 is locked by a projection 6 welded to the inner tube 2 in advance, and the other end is locked by a locking projection 8 via a tubular heat-resistant glass spacer 7.
9a,9b,9cは内管2の外側面に溶着した別の突起で管状
フィルタ5および管状スペーサ7が径方向に偏るのを防
いでいる。Numerals 9a, 9b and 9c are other projections welded to the outer surface of the inner tube 2 to prevent the tubular filter 5 and the tubular spacer 7 from being biased in the radial direction.
このような構造によれば、内管2に係止用突起8を溶
着させる場合、管状フィルタ5の端部より離れた個所を
加熱して溶融すればよいので、管状フイルタ5の端部に
対する熱的なダメージやストレスが解消でき、かつ熟練
を要することなく十分な加熱溶融作業を行なうことがで
きるので、突起を強固に溶着することができ、ウォータ
ーハンマー現象に対しても突起が脱落することはない。According to such a structure, when the locking projections 8 are welded to the inner tube 2, a portion remote from the end of the tubular filter 5 may be heated and melted. Damage and stress can be eliminated, and sufficient heat melting work can be performed without skill, so that the projections can be firmly welded and the projections do not fall off even with the water hammer phenomenon. Absent.
なお、前記管状スペーサは両端に設けても良い。又、
管状スペーサの長さは管状フィルタと内管との長さを考
慮して適宜選択すればよい。The tubular spacer may be provided at both ends. or,
The length of the tubular spacer may be appropriately selected in consideration of the length of the tubular filter and the inner tube.
[考案の効果] 以上の説明から明らかなように、本考案に係る放電灯
は、係止用突起の溶着作業が容易であり、かつ内管と係
止用突起との融着が完全になされるので、係止用突起の
脱落や、それに伴う管状フィルタの破損あるいは内管の
破損の発生が生じることがなく、長寿命である等の利点
がある。[Effects of the Invention] As is clear from the above description, in the discharge lamp according to the present invention, the welding operation of the locking projections is easy, and the fusion between the inner tube and the locking projections is completely performed. Therefore, there is an advantage that the locking projections do not fall off, the tubular filter or the inner tube is damaged, and the life of the inner filter is long.
第1図は本考案に係る放電灯の一部縦断側面図、第2図
は同じく水冷ジャケットの要部拡大断面図、第3図は従
来の水冷ジャケットの要部拡大断面図である。 1……発光管、2……水冷ジャケット用内管、3……水
冷ジャケット用外管、4……水冷ジャケット、5……管
状フィルタ、6……係止用突起、7……管状スペーサ、
8……係止用突起、9a,9b,9c……突起。1 is a partially longitudinal side view of a discharge lamp according to the present invention, FIG. 2 is an enlarged sectional view of a main part of a water cooling jacket, and FIG. 3 is an enlarged sectional view of a main part of a conventional water cooling jacket. DESCRIPTION OF SYMBOLS 1 ... Emission tube, 2 ... Inner tube for water-cooled jacket, 3 ... Outer tube for water-cooled jacket, 4 ... Water-cooled jacket, 5 ... Tube filter, 6 ... Protrusion for locking, 7 ... Tube spacer
8 ... locking projections, 9a, 9b, 9c ... projections.
Claims (1)
2と外管3とからなる耐熱ガラス製の水冷ジャケット4
を設け、かつ前記内管2の外周に低融点ガラス製の管状
フィルタ5を装着してなる放電灯において、 前記管状フィルタ5の少なくとも一端は耐熱ガラス製の
管状スペーサを介して係止してなる紫外線照射用放電
灯。1. A water-cooled jacket 4 made of heat-resistant glass comprising an inner tube 2 and an outer tube 3 on the outer periphery of an arc tube 1 that emits ultraviolet rays.
And a low-melting-point glass tubular filter 5 attached to the outer periphery of the inner tube 2. At least one end of the tubular filter 5 is locked via a heat-resistant glass tubular spacer. Discharge lamp for UV irradiation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7875490U JP2530724Y2 (en) | 1990-07-26 | 1990-07-26 | Discharge lamp for UV irradiation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7875490U JP2530724Y2 (en) | 1990-07-26 | 1990-07-26 | Discharge lamp for UV irradiation |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0436761U JPH0436761U (en) | 1992-03-27 |
JP2530724Y2 true JP2530724Y2 (en) | 1997-03-26 |
Family
ID=31622305
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7875490U Expired - Lifetime JP2530724Y2 (en) | 1990-07-26 | 1990-07-26 | Discharge lamp for UV irradiation |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2530724Y2 (en) |
-
1990
- 1990-07-26 JP JP7875490U patent/JP2530724Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0436761U (en) | 1992-03-27 |
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