JP6800433B2 - Xenon flash lamp for container sterilization - Google Patents
Xenon flash lamp for container sterilization Download PDFInfo
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- JP6800433B2 JP6800433B2 JP2018121323A JP2018121323A JP6800433B2 JP 6800433 B2 JP6800433 B2 JP 6800433B2 JP 2018121323 A JP2018121323 A JP 2018121323A JP 2018121323 A JP2018121323 A JP 2018121323A JP 6800433 B2 JP6800433 B2 JP 6800433B2
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- 229910052724 xenon Inorganic materials 0.000 title claims description 57
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 title claims description 57
- 230000001954 sterilising effect Effects 0.000 title claims description 24
- 238000004659 sterilization and disinfection Methods 0.000 title claims description 21
- 239000011521 glass Substances 0.000 claims description 18
- 239000003651 drinking water Substances 0.000 claims description 5
- 235000020188 drinking water Nutrition 0.000 claims description 5
- 238000004031 devitrification Methods 0.000 description 12
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 239000010453 quartz Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/08—Radiation
- A61L2/10—Ultra-violet radiation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
- H01J61/32—Special longitudinal shape, e.g. for advertising purposes
Landscapes
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
本発明は、容器殺菌用のキセノンフラッシュランプに関する。更に具体的には、本発明は、食品や飲料水等の容器として利用される深型のトレイ、カップ、ボトル等の容器の内面を殺菌処理するため使用されるキセノンフラッシュランプの構成に関する。 The present invention relates to a xenon flash lamp for container sterilization. More specifically, the present invention relates to a configuration of a xenon flash lamp used for sterilizing the inner surface of a container such as a deep tray, cup, or bottle used as a container for food, drinking water, or the like.
食品や飲料水の製造・加工メーカーでは、それらの容器を確実に殺菌処理することが重要である。消費者ニーズの多様化により、食品や飲料水の低塩化、保存料の廃止、賞味期限の延長等により、容器に対する確実な殺菌処理が求められている。 For food and drinking water manufacturers and processors, it is important to ensure that their containers are sterilized. Due to the diversification of consumer needs, reliable sterilization of containers is required by reducing the chloride content of food and drinking water, abolishing preservatives, and extending the expiration date.
現在、加熱処理、薬剤による殺菌処理に代わり又はこれと併用して、非加熱・非接触で殺菌が可能な殺菌技術の開発が進められている。このような、非加熱・非接触の殺菌技術として、閃光パルス殺菌処理が注目されている。 Currently, the development of sterilization technology capable of non-heating and non-contact sterilization is underway in place of or in combination with heat treatment and sterilization treatment with chemicals. As such a non-heating / non-contact sterilization technique, flash pulse sterilization treatment is attracting attention.
閃光パルス殺菌処理には、キセノンフラッシュランプが使用されている。キセノンフラッシュランプの発光には、殺菌に有効な波長200〜300ｎｍの紫外線を豊富に含んでいる。 A xenon flash lamp is used for the flash pulse sterilization process. The light emission of a xenon flash lamp contains abundant ultraviolet rays with a wavelength of 200 to 300 nm, which are effective for sterilization.
キセノンフラッシュランプを利用した閃光殺菌処理は、殺菌効果が強力であり、発光のパルス制御が容易であり、非接触のため残留物が発生せず、極めて短時間のパルス照射のため処理対象物（容器等）への影響が少ない等の利点を有している。 The flash sterilization treatment using a xenon flash lamp has a strong sterilization effect, the pulse control of light emission is easy, no residue is generated because it is non-contact, and the object to be treated is a pulse irradiation for an extremely short time. It has advantages such as less impact on containers, etc.).
その反面、閃光パルス殺菌処理は、光が照射できる部分しか殺菌できないという欠点がある。そのため、容器の外部からキセノンフラッシュランプを照射しても、容器内面の一部（例えば、容器底面や開口の小さいボトル形状の肩部）に光が十分に届かず、十分な殺菌が行われないおそれがある。 On the other hand, the flash pulse sterilization treatment has a drawback that only the part that can be irradiated with light can be sterilized. Therefore, even if the xenon flash lamp is irradiated from the outside of the container, the light does not sufficiently reach a part of the inner surface of the container (for example, the bottom surface of the container or the bottle-shaped shoulder with a small opening), and sufficient sterilization is not performed. There is a risk.
従来、次に挙げるようなキセノンフラッシュランプの一部を容器内に挿入し、容器の内部からパルス照射する殺菌方法が提案されている。 Conventionally, a sterilization method has been proposed in which a part of a xenon flash lamp as described below is inserted into a container and pulse irradiation is performed from the inside of the container.
特許文献1〜３に開示のランプは、発光管の一部を容器に挿入している。しかし、これら特許文献には、発光管の容器挿入部分に発生する問題点及びこれを解決するためのガラス強度の規制に関する記載は存在しない。 In the lamps disclosed in Patent Documents 1 to 3, a part of the arc tube is inserted in a container. However, in these patent documents, there is no description regarding the problem that occurs in the container insertion portion of the arc tube and the regulation of the glass strength for solving the problem.
発光管の容器内挿入部をＵ字形状にした発光管を試作したところ、下端の折り曲げ部のＵ字最下部内側の発光管内面に失透（ガラスが結晶化して脆くなる現象）が発生し、更に点灯時間が経過すると穴が開きリークする現象が発生した。即ち、従来の直管型のキセノンフラッシュランプに比較して、ランプは短寿命であった。Ｕ字形状の屈曲部の内側の機械的強度が不足し、点灯時の温度上昇によりダメージを受けているものと考えられる。 When a prototype arc tube with a U-shaped insertion part inside the container of the arc tube was prototyped, devitrification (a phenomenon in which the glass crystallizes and becomes brittle) occurs on the inner surface of the arc tube inside the lowermost U-shape of the bent portion at the lower end. Then, when the lighting time passed, a hole opened and a leak occurred. That is, the lamp has a shorter life than the conventional straight tube type xenon flash lamp. It is probable that the mechanical strength inside the U-shaped bent portion was insufficient and that it was damaged by the temperature rise during lighting.
そこで、本発明は、Ｕ字形状の容器内挿入部を持ち、従来の直管型ランプと同等のランプ寿命を有するキセノンフラッシュランプを提供することを目的とする。 Therefore, an object of the present invention is to provide a xenon flash lamp having a U-shaped insertion portion in a container and having a lamp life equivalent to that of a conventional straight tube type lamp.
上記目的に鑑みて、本発明に係るキセノンフラッシュランプは、円筒状のガラス管から成る発光管を備えたキセノンフラッシュランプであって、
前記発光管の一部は、部分的に容器開口部に挿入可能なＵ字形状に屈曲されており、
Ｕ字形状の屈曲部の内側肉厚t1[mm]が、0.8≦t1≦2.5の範囲内であり、
Ｕ字形状のストレート部Ｕｓの肉厚t2[mm]が、0.4≦t2≦2.0の範囲内である。
In view of the above object, the xenon flash lamp according to the present invention is a xenon flash lamp provided with an arc tube made of a cylindrical glass tube.
A part of the arc tube is bent into a U shape that can be partially inserted into the opening of the container.
The inner wall thickness t1 [mm] of the U-shaped bend is within the range of 0.8 ≤ t1 ≤ 2.5.
The wall thickness t2 [mm] of the U-shaped straight portion Us is within the range of 0.4 ≦ t2 ≦ 2.0.
更に、上記キセノンフラッシュランプでは、Ｕ字形状の屈曲部の内側肉厚t1[mm]及びストレート部Ｕｓの肉厚t2[mm]が、0.8≦t1,t2≦2.0の範囲内であってよい。 Further, in the xenon flash lamp, the inner wall thickness t1 [mm] of the U-shaped bent portion and the wall thickness t2 [mm] of the straight portion Us may be within the range of 0.8 ≦ t1, t2 ≦ 2.0.
更に、上記キセノンフラッシュランプでは、前記発光管は、Ｔ字形状に屈曲されていてもよい。 Further, in the xenon flash lamp, the arc tube may be bent in a T shape.
更に、上記キセノンフラッシュランプでは、前記発光管は、Ｙ字形状又はカタカナの「ト」字形状に屈曲されていてもよい。 Further, in the xenon flash lamp, the arc tube may be bent in a Y shape or a katakana "T" shape.
更に、上記キセノンフラッシュランプでは、前記容器開口部から前記容器内部へ挿入した屈曲部の長さは、前記容器の深さに応じて決定されていてもよい。 Further, in the xenon flash lamp, the length of the bent portion inserted from the container opening into the container may be determined according to the depth of the container.
本発明によれば、Ｕ字形状の容器内挿入部を持ち、従来の直管型ランプと同等のランプ寿命を有するキセノンフラッシュランプを提供することができる。 According to the present invention, it is possible to provide a xenon flash lamp having a U-shaped insertion portion in a container and having a lamp life equivalent to that of a conventional straight tube type lamp.
以下、本発明に係る容器殺菌用のキセノンフラッシュランプの実施形態に関し、添付の図面を参照しながら詳細に説明する。図中、同じ要素に対しては同じ参照符号を付して、重複する説明を省略する。 Hereinafter, embodiments of the xenon flash lamp for container sterilization according to the present invention will be described in detail with reference to the accompanying drawings. In the figure, the same reference numerals are given to the same elements, and duplicate description is omitted.
本実施例に係るキセノンフラッシュランプの特徴は、従来のキセノンフラッシュランプと比較して、ランプの形状にある。従って、本実施例に係るキセノンフラッシュランプの理解を容易に出来るように、最初に従来のキセノンフラッシュランプに関して簡単に説明する。 The feature of the xenon flash lamp according to this embodiment is the shape of the lamp as compared with the conventional xenon flash lamp. Therefore, in order to facilitate the understanding of the xenon flash lamp according to the present embodiment, first, the conventional xenon flash lamp will be briefly described.
［従来のキセノンフラッシュランプ］
図１は、従来のキセノンフラッシュランプを説明する図である。従来のキセノンフラッシュランプ１１０は、希ガスのキセノンを封入した発光管１０２の両端に、陽極電極１０４ａと陰極電極１０４ｂとが対向して配置された構造となっている。発光管１０２は、紫外線透過率の高い石英ガラスから成り、両端が封止された一定の太さの直線状の円筒形に成形されている。
[Conventional xenon flash lamp]
FIG. 1 is a diagram illustrating a conventional xenon flash lamp. The conventional xenon flash lamp 110 has a structure in which an anode electrode 104a and a cathode electrode 104b are arranged to face each other at both ends of an arc tube 102 filled with a rare gas xenon. The arc tube 102 is made of quartz glass having a high ultraviolet transmittance, and is formed into a linear cylindrical shape having a constant thickness with both ends sealed.
発光管１０２の外周面に沿って、トリガー線（「始動用補助電極」ともいう。）１０８が配置されている。トリガー線１０８は、各々が発光管１０２の外周面に密着しながら発光管を取り囲む複数個のリング部ワイヤ１０８−１と、発光管の軸線に沿って延在して複数個のリング部ワイヤ１０８−１を連結する連結部ワイヤ１０８−２とから成る。 A trigger wire (also referred to as a "starting auxiliary electrode") 108 is arranged along the outer peripheral surface of the arc tube 102. The trigger wire 108 includes a plurality of ring portion wires 108-1 that surround the arc tube while being in close contact with the outer peripheral surface of the arc tube 102, and a plurality of ring portion wires 108 that extend along the axis of the arc tube. It is composed of a connecting portion wire 108-2 for connecting -1.
陽極電極１０４ａは、電極リード棒１０４ａ−１の先端部（発光管側）を円柱状に成形加工した陽極大径部１０４ａ−２を備えるタングステンロッドによって形成されている。 The anode electrode 104a is formed of a tungsten rod provided with a large-diameter anode portion 104a-2 in which the tip end portion (arc tube side) of the electrode lead rod 104a-1 is formed into a columnar shape.
陰極側電極１０４ｂは、電極リード棒１０４ｂ−１の先端部（発光管側）を円柱状に成形加工して陰極大径部１０４ｂ−２とし、この陰極大径部の端部上面に電子放出性物質から成る円柱状の焼結体（「エミッタ部」ともいう。）１０４ｂ−３が固着されたタングステンロッドによって形成されている。エミッタ部１０４ｂ−３の先端周囲にリング部ワイヤ１０８−１が位置決めされている。 The cathode side electrode 104b has a large-diameter cathode 104b-2 formed by molding the tip of the electrode lead rod 104b-1 (on the arc tube side) into a columnar shape, and emits electrons on the upper surface of the end of the large-diameter cathode. It is formed by a tungsten rod to which a columnar sintered body (also referred to as “emitter portion”) 104b-3 made of a substance is fixed. The ring portion wire 108-1 is positioned around the tip of the emitter portion 104b-3.
電極リード棒１０４ａ−１，１０４ｂ−１の発光管と反対側は、リードワイヤ１０３ａ，１０３ｂに夫々接続されている。 The sides of the electrode lead rods 104a-1 and 104b-1 opposite to the arc tube are connected to the lead wires 103a and 103b, respectively.
［本実施例に係るキセノンフラッシュランプ］
（ランプ形状）
図２は、本実施例に係るキセノンフラッシュランプ１０ａを説明する図である。なお、図を簡略化して明瞭なものとするため、トリガー線は図示していないが、実際は図１と同様にトリガー線が発光管２の外周面に沿って存在している。
[Xenon flash lamp according to this embodiment]
(Lamp shape)
FIG. 2 is a diagram illustrating a xenon flash lamp 10a according to the present embodiment. Although the trigger line is not shown for the sake of simplification and clarity in the figure, the trigger line actually exists along the outer peripheral surface of the arc tube 2 as in FIG.
図１に示す従来のキセノンフラッシュランプ１１０との相違点を中心に説明する。従来のキセノンフラッシュランプ１１０と比較すると、発光管２の両端に、陽極電極４ａと陰極電極４ｂとが対向して配置されている点は共通するが、発光管２の中央部２ｂがＵ字形状に形成されている点で相違する。このＵ字形状部分２ｂ−１が、容器の開口部から内部に挿入される部分である。 The differences from the conventional xenon flash lamp 110 shown in FIG. 1 will be mainly described. Compared with the conventional xenon flash lamp 110, the anode electrode 4a and the cathode electrode 4b are arranged to face each other at both ends of the arc tube 2, but the central portion 2b of the arc tube 2 has a U shape. It differs in that it is formed in. The U-shaped portion 2b-1 is a portion inserted into the inside through the opening of the container.
発光管２の左端部分２ａ，中央部２ｂ、及び右端部分２ｃは、同じ外径の放電空間を形成するよう接続され、両端部は封止されている。従来のキセノンフラッシュランプ１１０と同様に、発光管２の左端部分２ａには、陽極大径部４ａ−２及び電極リード棒４ａ−１が配置され、反対側の右端部分２ｃには、エミッタ部４ｂ−３，陰極大径部４ｂ−２及び電極リード棒４ｂ−１が配置されている。 The left end portion 2a, the center portion 2b, and the right end portion 2c of the arc tube 2 are connected so as to form a discharge space having the same outer diameter, and both ends are sealed. Similar to the conventional xenon flash lamp 110, the large diameter anode portion 4a-2 and the electrode lead rod 4a-1 are arranged on the left end portion 2a of the arc tube 2, and the emitter portion 4b is arranged on the right end portion 2c on the opposite side. -3, the large diameter portion 4b-2 of the cathode and the electrode lead rod 4b-1 are arranged.
本発明者等の試作したこのＵ字形状発光管の仕様は次の通りである。但し、これに限定されない。
発光管：材質はオゾンレス石英管、
ｄ＝φ10、肉厚ｔ＝1.0ｍｍ
ガス圧：Ｘｅガス500 torr
電極： φ7.5
The specifications of this U-shaped arc tube prototyped by the present inventors are as follows. However, it is not limited to this.
Arc tube: Material is ozoneless quartz tube,
d = φ10, wall thickness t = 1.0 mm
Gas pressure: Xe gas 500 torr
Electrode: φ7.5
（ランプの使用態様）
図３は、殺菌処理の対象である容器の一例を示す図である。
(Lamp usage)
FIG. 3 is a diagram showing an example of a container to be sterilized.
図４は、本実施例に係るキセノンフラッシュランプ１０ａを使用して、容器１２の内面を殺菌処理している状況を説明する図である。キセノンフラッシュランプ１０ａは、中央部２ｂのＵ字形状部分２ｂ−１が、容器開口部１２ａから内部に深く挿入されている。中央部２ｂのＵ字形状部分２ｂ−１は、テフロン（登録商標）膜で被覆された石英ジャケット６で覆われている。石英ジャケット６は、ランプ破裂時や衝撃によるガラス割れ時に破片の飛散を防ぐために用いられる。 FIG. 4 is a diagram illustrating a situation in which the inner surface of the container 12 is sterilized by using the xenon flash lamp 10a according to the present embodiment. In the xenon flash lamp 10a, the U-shaped portion 2b-1 of the central portion 2b is deeply inserted into the inside from the container opening 12a. The U-shaped portion 2b-1 of the central portion 2b is covered with a quartz jacket 6 coated with a Teflon (registered trademark) film. The quartz jacket 6 is used to prevent the fragments from scattering when the lamp bursts or the glass breaks due to an impact.
このキセノンフラッシュランプ１０ａの第１の特徴は、中央部２ｂのＵ字形状部分２ｂ−１が、容器１２の開口部１２ａから内部に挿入されている点にある。容器１２の深さに合わせて、ランプ１０ａのＵ字形状部分２ｂ−１の長さを決めることにより、容器の内面全体を直接光照射して殺菌処理可能にしている。 The first feature of the xenon flash lamp 10a is that the U-shaped portion 2b-1 of the central portion 2b is inserted into the inside through the opening 12a of the container 12. By determining the length of the U-shaped portion 2b-1 of the lamp 10a according to the depth of the container 12, the entire inner surface of the container is directly irradiated with light to enable sterilization.
一方、陽極電極４ａ（陽極大径部４ａ，電極リード棒４ａ−１）が封入された左端部分２ａ及び陰極電極４ｂ（エミッタ４ｂ−３，陰極大径部４ａ，電極リード棒４ａ−１）が封入された右端部分２ｃは、容器１２の外部に配置されている。 On the other hand, the left end portion 2a in which the anode electrode 4a (anode large diameter portion 4a, electrode lead rod 4a-1) is enclosed and the cathode electrode 4b (emitter 4b-3, cathode large diameter portion 4a, electrode lead rod 4a-1) are formed. The enclosed right end portion 2c is arranged outside the container 12.
本発明者等の試作したこのＵ字形状発光管の仕様は次の通りである。但し、これに限定されない。
容器の開口部：φ40 長さ80ｍｍ
発光管：材質は一般石英管、
外径ｄ＝φ10、肉厚ｔ＝1.0ｍｍ
ガス圧：Ｘｅガス500 torr
電極：φ７.5
石英ジャケット：外径φ30ｍｍ
作業条件：ランプ入力エネルギー 600Ｊ
パルス点灯間隔 3ショット／秒
The specifications of this U-shaped arc tube prototyped by the present inventors are as follows. However, it is not limited to this.
Container opening: φ40 Length 80mm
Arc tube: Material is general quartz tube,
Outer diameter d = φ10, wall thickness t = 1.0 mm
Gas pressure: Xe gas 500 torr
Electrode: φ7.5
Quartz jacket: outer diameter φ30mm
Working conditions: Lamp input energy 600J
Pulse lighting interval 3 shots / sec
（発光管の機械的強度）
当初、中央部をＵ字形状にした発光管を試作し点灯したところ、Ｕ字最下部内側の発光管内面に失透が発生し、更に点灯時間が経過すると穴が開きリークする現象が発生した。図５は、発光管のＵ字形状の屈曲部に発生した失透及びリークの穴を撮影した写真である。図５（Ａ）は、Ｘ線写真、図５（Ｂ）は、点灯後のランプ外観写真、図５（Ｃ）は、失透及びリークの穴の写真である。
(Mechanical strength of arc tube)
Initially, when a U-shaped arc tube was prototyped and lit in the center, devitrification occurred on the inner surface of the arc tube inside the lowermost U-shape, and after the lighting time passed, a hole opened and a leak occurred. .. FIG. 5 is a photograph of devitrification and leak holes generated in the U-shaped bent portion of the arc tube. 5 (A) is an X-ray photograph, FIG. 5 (B) is a photograph of the appearance of the lamp after lighting, and FIG. 5 (C) is a photograph of devitrification and leak holes.
本発明者等は、失透及びリークの穴の発生箇所を調べたところ、Ｕ字形状の屈曲部に発生することが判明した。この部分のガラス強度が、比較的弱いと思われる。 When the present inventors investigated the locations where devitrification and leak holes were generated, it was found that they were generated at the U-shaped bent portion. The glass strength of this part seems to be relatively weak.
そこで、ガラス強度を確保するため、Ｕ字形状部２ｂ−１のガラス肉厚を管理することとした。幾つかのガラス肉厚の異なる試作品を作成し、屈曲部Ｕｂの内側肉厚ｔ１及びストレート部Ｕｓの肉厚ｔ２の最適範囲及びの最適範囲を求めた。表１にその実験結果を示す。実験に使用した発光管の外径は、Ｄ＝10.0ｍｍである。
Therefore, in order to secure the glass strength, it was decided to control the glass wall thickness of the U-shaped portion 2b-1. Several prototypes having different glass wall thicknesses were prepared, and the optimum range and the optimum range of the inner wall thickness t1 of the bent portion Ub and the wall thickness t2 of the straight portion Us were determined. Table 1 shows the experimental results. The outer diameter of the arc tube used in the experiment is D = 10.0 mm.
表１に示すように、屈曲部Ｕｂの内側肉厚t1[mm]が、0.8≦t1≦2.5の範囲では失透，リークは発生しなかった。しかし、この範囲よりガラスが薄いt1＜0.6では失透，リークが発生した。一方、ストレート部Ｕｓの肉厚t2[mm]が、0.4≦t2≦2.0の範囲では、十分な光量が確保できている。しかし、この範囲よりガラスが厚い2.5＜t2では暗くなり、光量不足となる。 As shown in Table 1, devitrification and leakage did not occur when the inner wall thickness t1 [mm] of the bent portion Ub was in the range of 0.8 ≦ t1 ≦ 2.5. However, when the glass was thinner than this range, t1 <0.6, devitrification and leakage occurred. On the other hand, when the wall thickness t2 [mm] of the straight portion Us is in the range of 0.4 ≦ t2 ≦ 2.0, a sufficient amount of light can be secured. However, when the glass is thicker than this range, 2.5 <t2, it becomes dark and the amount of light becomes insufficient.
従って、t1,t2を個別に管理しない場合、総合評価として、失透，リークが発生せず、十分な光量が確保出来る範囲は、0.8≦t1,t2≦2.0であった。 Therefore, when t1 and t2 are not managed individually, as a comprehensive evaluation, the range in which devitrification and leakage do not occur and a sufficient amount of light can be secured is 0.8 ≤ t1, t2 ≤ 2.0.
（キセノンフラッシュランプの点灯回路）
図６は、図２に示すキセノンフラッシュランプの点灯回路３０の一例を説明する図である。ここで、符号１０ａはランプであり、符号８はトリガー線である。点灯回路３０は、商用交流電源２２と、これを昇圧し整流する充電用高圧電源回路２４と、この出力を蓄電する充放電用コンデンサ２６と、波形調整用コイル２８とを備え、ランプ１０にパルス電圧を給電している。更に、始動用外部トリガー発生回路３２と、トリガーパルスを昇圧してトリガー線８に送るパルス昇圧トランス３４とを備えている。
(Xenon flash lamp lighting circuit)
FIG. 6 is a diagram illustrating an example of the lighting circuit 30 of the xenon flash lamp shown in FIG. Here, reference numeral 10a is a lamp, and reference numeral 8 is a trigger line. The lighting circuit 30 includes a commercial AC power supply 22, a high-voltage charging power supply circuit 24 for boosting and rectifying the power supply, a charging / discharging capacitor 26 for storing the output, and a waveform adjusting coil 28, and pulsed the lamp 10. It is supplying voltage. Further, an external trigger generation circuit 32 for starting and a pulse step-up transformer 34 that boosts the trigger pulse and sends it to the trigger line 8 are provided.
（本実施形態の利点・特徴）
本実施形態に係るキセノンフラッシュランプは、次のような利点・特徴を有する。
(1) キセノンフラッシュランプの発光管中央部２ｂをＵ字形状部分２ｂ−１に形成し、屈曲部の内側肉厚t1[mm]を、0.8≦t1≦2.5の範囲内であり、且つＵ字形状のストレート部Ｕｓの肉厚t2[mm]を、0.4≦t2≦2.0の範囲内にすることで、失透，リークが発生せず、十分な光量が確保出来る。
(2) キセノンフラッシュランプの発光管のＵ字形状部２ｂ−１の屈曲部Ｕｂの内側肉厚t1[mm]とストレート部Ｕｓの肉厚t2[mm]に関し、t1,t2を個別に管理しない場合には、0.8≦t1,t2≦2.0の範囲内にすることで、失透，リークが発生せず、十分な光量が確保出来る。
(3)容器開口部から内部へ挿入可能な形状に屈曲された部分の長さは、容器の深さに応じて決定することができ、容器の内面周面及び底部まで紫外線を照射することが出来る。
(Advantages / features of this embodiment)
The xenon flash lamp according to this embodiment has the following advantages and features.
(1) The central portion 2b of the arc tube of the xenon flash lamp is formed in the U-shaped portion 2b-1, and the inner wall thickness t1 [mm] of the bent portion is within the range of 0.8 ≦ t1 ≦ 2.5 and is U-shaped. By setting the wall thickness t2 [mm] of the straight portion Us of the shape within the range of 0.4 ≦ t2 ≦ 2.0, devitrification and leakage do not occur, and a sufficient amount of light can be secured.
(2) Regarding the inner wall thickness t1 [mm] of the bent portion Ub of the U-shaped portion 2b-1 of the arc tube of the xenon flash lamp and the wall thickness t2 [mm] of the straight portion Us, t1 and t2 are not managed individually. In this case, by setting it within the range of 0.8 ≤ t1 and t2 ≤ 2.0, devitrification and leakage do not occur, and a sufficient amount of light can be secured.
(3) The length of the portion bent into a shape that can be inserted into the inside from the opening of the container can be determined according to the depth of the container, and ultraviolet rays can be irradiated to the inner peripheral surface and the bottom of the container. You can.
［変形例等］
図２及び図４に示すキセノンフラッシュランプは、全体的に見ると、発光管がＴ字形状となっている。この形状は、種々の変形例が考えられる。図７（Ａ），（Ｂ）は、本実施例に係るキセノンフラッシュランプの変形例を示す模式図である。例えば、図６（Ａ）に示すＹ字形状、図７（Ｂ）に示す両端部分２ａ，２ｃの一方が発光管中央部２ｂに水平方向に延び、他方が垂直方向に延びるカタカナ「ト」の字形状、及びこれらの組み合わせ（一方が斜め方向、他方が水平又は垂直方向）等が考えられる。
[Modification example, etc.]
The xenon flash lamps shown in FIGS. 2 and 4 have a T-shaped arc tube as a whole. Various modifications can be considered for this shape. 7 (A) and 7 (B) are schematic views showing a modified example of the xenon flash lamp according to the present embodiment. For example, the Y-shape shown in FIG. 6 (A), one of both end portions 2a and 2c shown in FIG. 7 (B) extends horizontally to the central portion 2b of the arc tube, and the other extends vertically. Character shapes and combinations thereof (one in an oblique direction and the other in a horizontal or vertical direction) can be considered.
［結び］
以上、本発明に係る容器殺菌用のキセノンフラッシュランプの実施形態に関し説明したが、これらは例示であって、本発明の範囲を何等限定するものではない。本実施形態に対して当業者が容易に成し得る追加、削除、変更、改良等は、本発明の範囲内である。本発明の技術的範囲は、添付の特許請求の範囲の記載によって定められる。
[Conclusion]
The embodiments of the xenon flash lamp for container sterilization according to the present invention have been described above, but these are examples and do not limit the scope of the present invention. Additions, deletions, changes, improvements, etc. that can be easily made by those skilled in the art to the present embodiment are within the scope of the present invention. The technical scope of the present invention is defined by the description of the appended claims.
２：発光管、 ２ａ：左端部分、 ２ｂ：発光管中央部，中央部、 ２ｂ−１：Ｕ字形状部分、 ２ｃ：右端部分、 ４ａ：陽極電極、 ４ａ−１：電極リード棒、 ４ａ−２：陽極大径部、 ４ｂｂ：陰極電極、 ４ｂ−１：電極リード棒、 ４ｂ−２： 陰極大径部、 ４ｂ−３：エミッタ、 ６：石英ジャケット、１０ａ，１０ｂ，１０ｃ：キセノンフラッシュランプ、 １２：容器、 １２ａ：容器開口部，開口部、 ２２：商用交流電源、 ２４：充電用高圧電源回路、 ２６：充放電用コンデンサ、 ２８：波形調整用コイル、 ３０：点灯回路、 ３２：始動用外部トリガー発生回路、 ３４：パルス昇圧トランス、 １０２：発光管、 １０３ａ，１０３ｂ：リードワイヤ、 １０４ａ：陽極電極、 １０４ａ−１：電極リード棒、 １０４ａ：陽極大径部、 １０４ｂ：陰極電極、 １０４ｂ−１：電極リード棒、 １０４ｂ−２：陰極大径部、 １０４ｂ−３：エミッタ部、 １０８：トリガー線、 １０８−１：リング部ワイヤ、 １０８−２：連結部ワイヤ、 １１０：キセノンフラッシュランプ、
ｔ１：屈曲部の内側肉厚、 ｔ２：ストレート部の肉厚、 Ｕｂ：屈曲部、 Ｕｓ：ストレート部、
2: arc tube, 2a: left end part, 2b: arc tube center part, center part, 2b-1: U-shaped part, 2c: right end part, 4a: anode electrode, 4a-1: electrode lead rod, 4a-2 : Large diameter part of anode, 4bb: Electrode electrode, 4b-1: Electrode lead rod, 4b-2: Large diameter part of cathode, 4b-3: Emitter, 6: Quartz jacket, 10a, 10b, 10c: Xenon flash lamp, 12 : Container, 12a: Container opening, opening, 22: Commercial AC power supply, 24: High-voltage power supply circuit for charging, 26: Condenser for charging and discharging, 28: Coil for waveform adjustment, 30: Lighting circuit, 32: External for starting Trigger generation circuit, 34: pulse boost transformer, 102: arc tube, 103a, 103b: lead wire, 104a: anode electrode, 104a-1: electrode lead rod, 104a: anode large diameter part, 104b: cathode electrode, 104b-1 : Electrode lead rod, 104b-2: Large diameter part of cathode, 104b-3: Emitter part, 108: Trigger wire, 108-1: Ring part wire, 108-2: Connecting part wire, 110: Xenon flash lamp,
t1: Inner wall thickness of the bent part, t2: Wall thickness of the straight part, Ub: Bent part, Us: Straight part,
Claims (4)
前記発光管は、Ｔ字形状に屈曲され、該記発光管の一方の端部には陽極電極が配置され、他方の端部には陰極電極が配置され、
前記発光管の中央部は、２本の前記ガラス管が近接して並列配置されたストレート部Usと、夫々の該ガラス管の下端部を連結するガラス管の屈曲部Ubとから成り、前記容器の開口部から挿入可能なＵ字形状に形成され、
前記屈曲部Ubは、前記ストレート部Usの管軸線に垂直方向の長さが、該ストレート部の最大幅以下の幅に形成され、
前記ストレート部Usの肉厚t2 [mm]は、0.4≦t2≦2.0の範囲内であり、
前記屈曲部Ubの内側肉厚t1 [mm]は、0.8≦t1≦2.5の範囲内である、キセノンフラッシュランプ。 A xenon flash lamp that has an arc tube made of a cylindrical glass tube and is used by being inserted through the opening of a container for sterilizing a container such as food or drinking water.
The arc tube is bent into a T shape, and an anode electrode is arranged at one end of the arc tube, and a cathode electrode is arranged at the other end.
The central portion of the arc tube is composed of a straight portion Us in which two glass tubes are arranged in parallel in close proximity to each other and a bent portion Ub of the glass tube connecting the lower ends of the glass tubes. Formed in a U shape that can be inserted through the opening of
The bent portion Ub is formed so that the length in the direction perpendicular to the pipe axis of the straight portion Us is equal to or less than the maximum width of the straight portion.
The wall thickness t2 [mm] of the straight portion Us is within the range of 0.4 ≤ t2 ≤ 2.0.
A xenon flash lamp in which the inner wall thickness t1 [mm] of the bent portion Ub is within the range of 0.8 ≦ t1 ≦ 2.5.
前記発光管は、Ｙ字形状又はカタカナの「ト」字形状に屈曲され、該記発光管の一方の端部には陽極電極が配置され、他方の端部には陰極電極が配置され、
前記発光管の中央部は、２本の前記ガラス管が近接して並列配置されたストレート部Usと、夫々の該ガラス管の下端部を連結するガラス管の屈曲部Ubとから成り、前記容器の開口部から挿入可能なＵ字形状に形成され、
前記屈曲部Ubは、前記ストレート部Usの管軸線に垂直方向の長さが、該ストレート部の最大幅以下の幅に形成され、
前記ストレート部Usの肉厚t2 [mm]は、0.4≦t2≦2.0の範囲内であり、
前記屈曲部Ubの内側肉厚t1 [mm]は、0.8≦t1≦2.5の範囲内である、キセノンフラッシュランプ。 A xenon flash lamp that has an arc tube made of a cylindrical glass tube and is used by being inserted through the opening of a container for sterilizing a container such as food or drinking water.
The arc tube is bent in a Y-shaped or katakana "bets" shape, at one end of the SL arc tube is disposed anode electrode, the other end portion is disposed a cathode electrode,
The central portion of the arc tube is composed of a straight portion Us in which two glass tubes are arranged in parallel in close proximity to each other, and a bent portion Ub of the glass tube connecting the lower ends of the glass tubes. Formed in a U shape that can be inserted through the opening of
The bent portion Ub is formed so that the length in the direction perpendicular to the pipe axis of the straight portion Us is equal to or less than the maximum width of the straight portion.
The wall thickness t2 [mm] of the straight portion Us is within the range of 0.4 ≤ t2 ≤ 2.0.
A xenon flash lamp in which the inner wall thickness t1 [mm] of the bent portion Ub is within the range of 0.8 ≦ t1 ≦ 2.5.
Ｕ字形状の屈曲部Ubの内側肉厚t1 [mm]及びストレート部Usの肉厚t2 [mm]が、0.8≦t1, t2≦2.0の範囲内である、キセノンフラッシュランプ。 In the xenon flash lamp according to claim 1 or 2 .
A xenon flash lamp in which the inner wall thickness t1 [mm] of the U-shaped bent portion Ub and the wall thickness t2 [mm] of the straight portion Us are within the range of 0.8 ≤ t1 and t2 ≤ 2.0.
前記容器開口部から前記容器内部へ挿入した前記発光管の長さは、前記容器の深さに応じて決定されている、キセノンフラッシュランプ。 In the xenon flash lamp for container sterilization according to any one of claims 1 to 3 .
A xenon flash lamp in which the length of the arc tube inserted into the container through the container opening is determined according to the depth of the container.
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| JP2018121323A JP6800433B2 (en) | 2018-06-26 | 2018-06-26 | Xenon flash lamp for container sterilization |
| CN201980043314.0A CN112335015B (en) | 2018-06-26 | 2019-06-21 | Xenon flash lamp for sterilizing container |
| PCT/JP2019/024693 WO2020004255A1 (en) | 2018-06-26 | 2019-06-21 | Xenon flash lamp for sterilizing container |
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| JPS6058979B2 (en) * | 1983-11-30 | 1985-12-23 | 明治乳業株式会社 | Flash sterilization method |
| JPH0398248A (en) * | 1989-09-12 | 1991-04-23 | Toshiba Lighting & Technol Corp | Ceramic discharge lamp |
| EP0415398A3 (en) * | 1989-08-31 | 1991-08-07 | Toshiba Lighting & Technology Corporation | Ceramic electric-discharge lamp incorporating arc tube having at least two curved regions |
| JP2001247108A (en) * | 2000-03-08 | 2001-09-11 | Shokuhin Sangyo Denshi Riyo Gijutsu Kenkyu Kumiai | Method and apparatus for sterilizing container |
| CN2634649Y (en) * | 2003-07-18 | 2004-08-18 | 启东计算机总厂有限公司 | Quartz ultraviolet sterilizing lamp |
| JP4280866B2 (en) * | 2004-02-02 | 2009-06-17 | 岩崎電気株式会社 | Flash lamp and its electrode unit |
| US20060170361A1 (en) * | 2005-01-31 | 2006-08-03 | Osram Sylvania Inc. | Single-ended Arc Discharge Vessel with a Divider Wall |
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| CN105079833B (en) * | 2015-09-01 | 2017-11-17 | 西安富康空气净化设备工程有限公司 | A kind of ultraviolet space disinfection device of high energy pulse |
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