JPH04190887A - Ultraviolet sterilizer and its purification method - Google Patents
Ultraviolet sterilizer and its purification methodInfo
- Publication number
- JPH04190887A JPH04190887A JP2317990A JP31799090A JPH04190887A JP H04190887 A JPH04190887 A JP H04190887A JP 2317990 A JP2317990 A JP 2317990A JP 31799090 A JP31799090 A JP 31799090A JP H04190887 A JPH04190887 A JP H04190887A
- Authority
- JP
- Japan
- Prior art keywords
- ultraviolet
- circulating water
- protective pipe
- disinfecting device
- ultraviolet sterilizer
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
- F28F2025/005—Liquid collection; Liquid treatment; Liquid recirculation; Addition of make-up liquid
Landscapes
- Physical Water Treatments (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、空調装置等の循環冷却水の殺菌を行うための
紫外線殺菌装置及びその浄化方法の改良に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in an ultraviolet sterilizer for sterilizing circulating cooling water of an air conditioner, etc., and a purification method thereof.
（従来の技術）
ビル等の空調装置では、循環する冷却水がり一リングタ
ワーにおいて大気に曝されるので、大気中の塵埃や雑菌
が冷却水に混入し、冷却水の品瓜系路を腐蝕したり、ク
ーリングタワー内に１實０や雑菌が繁殖したりする。ま
た繁殖する雑菌の中で、とりわけレジオネラ細菌は、大
気中に飛散しビルの空費５取入口より混入した場合、ビ
ル内の人に急性肺炎をおこす危険性が大であり、病院、
ホテル、オフィスビル等でその防止対策に関する関心が
高まっている。(Prior art) In air conditioners for buildings, the circulating cooling water is exposed to the atmosphere in the ring tower, so dust and bacteria in the atmosphere mix into the cooling water and corrode the cooling water supply path. Or bacteria may grow inside the cooling tower. In addition, among the various bacteria that breed, Legionella bacteria in particular poses a high risk of causing acute pneumonia to people in the building if it is dispersed into the air and enters the air intake of the building.
There is increasing interest in prevention measures for hotels, office buildings, etc.
このため、循環冷却水の清浄化方法として、冷却水を濾
過して該雑菌を物理的に除去する方法、冷却水中に薬剤
を添加して藻類や雑１ηの繁殖を防止する方法、冷却水
を紫外線殺菌ランプによって殺菌する方法等の諸種の清
浄化方法が試みられている。For this reason, methods for purifying circulating cooling water include filtering the cooling water to physically remove the bacteria, adding chemicals to the cooling water to prevent the growth of algae and other contaminants, and Various cleaning methods have been tried, including disinfection using ultraviolet germicidal lamps.
これらの循環冷汗水の清浄化方法の中で、紫外線照射に
よる殺菌は、紫外線によって、循環水の性状を変えるこ
となく微細な藻類やレジオネラ細菌等の雑菌の発生を防
止することができる方法として注目を集め、その装置に
関して種々の提案、例えば、特開昭５５−２００号、特
開昭５６−９５３８７号、特開平１−２９３１１０号、
特開平１−１３５５８２号等が行なわれている。Among these methods of purifying circulating cold sweat water, sterilization by ultraviolet irradiation is attracting attention as a method that can prevent the growth of bacteria such as microscopic algae and Legionella bacteria without changing the properties of circulating water. and various proposals regarding the device, such as JP-A-55-200, JP-A-56-95387, JP-A-1-293110,
Japanese Unexamined Patent Publication No. 1-135582 has been published.
（発明が解決しようとする課題）
しかしながら、紫外線による殺菌装置は、その原理から
して比較的清浄な水の殺菌用に適するものであり、循環
冷却水のように塵埃、有機物、鉄分等を含んだ水に適用
すると、経時的に紫外線ランプの保護管表面が汚損され
、照射光量が低下する結果、所期の性能を維持し得ない
という事態が生じていた。このため、定期的に、該保護
管表面を洗浄するか、保護管自体を交換する必要が生じ
、その作業に多大の労力を要しており、より簡便な浄化
方法の提供が求められていた。(Problem to be Solved by the Invention) However, ultraviolet sterilizers are suitable for sterilizing water that is relatively clean due to its principle, and does not contain dust, organic matter, iron, etc., like circulating cooling water. When applied to raw water, the surface of the protection tube of the ultraviolet lamp becomes contaminated over time, resulting in a decrease in the amount of light irradiated, resulting in a situation where the desired performance cannot be maintained. For this reason, it is necessary to periodically clean the surface of the protective tube or replace the protective tube itself, which requires a great deal of effort, and there has been a need for a simpler purification method. .
（課題を解決するための手段）
本発明者は、簡便で効率的な紫外線殺菌装置の浄化方法
について鋭意検討を行った。その結果、撹拌翼により循
環水に乱流を起こさしめ、紫外線ランプ保護管に循環水
を衝突させることにより該保護管表面を常にクリーンに
維持できることを見い出し、本発明に到達した。(Means for Solving the Problems) The present inventor conducted extensive research on a simple and efficient method for purifying an ultraviolet sterilizer. As a result, they discovered that the surface of an ultraviolet lamp protection tube can always be kept clean by causing turbulence in the circulating water using a stirring blade and causing the circulating water to collide with the ultraviolet lamp protection tube, thereby achieving the present invention.
すなわち本発明の装置は、
紫外線殺菌装置内の紫外線照射ランプ保護管周辺に、撹
拌翼を配設すると共に、その駆動モータを該殺菌装置の
外部に配設せしめたことを特徴とし、
本発明の方法は、
循環する水の紫外線照射による殺菌を行う紫外線殺菌装
置において、紫外線照射ランプの保護管表面に乱流を起
こさしめて、該照射ランプ保護管表面への付着性汚損物
質の付着を防止することを特徴とする。That is, the device of the present invention is characterized in that a stirring blade is disposed around the UV irradiation lamp protection tube within the ultraviolet sterilizer, and its drive motor is disposed outside the sterilizer. The method is to prevent adhesive contaminants from adhering to the surface of the UV irradiation lamp protection tube by causing turbulence on the surface of the protection tube of the UV irradiation lamp in an ultraviolet sterilization device that sterilizes circulating water by irradiating it with ultraviolet rays. It is characterized by
以下、本発明を添付図面を参照しつつ詳細に説明する。Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
第１図は、本発明の紫外線殺菌装置内の実施態様の１例
の断面図である。FIG. 1 is a cross-sectional view of one embodiment of the ultraviolet sterilizer of the present invention.
循環水は、流入管１より流入し、流路１０を通過する過
程で、保護脅６を介して紫外線照射ランプ７により照射
される紫外線により殺菌されて、流出管８より排出され
る。循環水は、高速で回転する撹拌翼により乱流が生じ
せしめられ保護管６に衝突する。この乱流により付着性
汚損物質の保護管への付着を防止することができる。The circulating water flows in through the inlet pipe 1 and is sterilized by ultraviolet rays irradiated by the ultraviolet irradiation lamp 7 via the protective cover 6 while passing through the flow path 10 and is discharged through the outflow pipe 8 . The circulating water is turbulent by the stirring blades rotating at high speed and collides with the protection tube 6 . This turbulent flow can prevent adhesive contaminants from adhering to the protective tube.
本発明においては、循環水に乱流を生じさせ紫外線照射
ランプ保護管に高速で衝突させることに一つの特徴があ
る。乱流を生じせしめる攪拌翼としては、攪拌の対象と
なる物質が水であり、従って低粘度液用の通常用いられ
るそれ自体既知の攪拌翼が用いられる。この攪拌翼の形
状の具体例としては、例えば、■デイクタービン、■フ
ァンタービン、■わん曲羽根ファンタービン、■矢羽根
タービン、■ファウドラー型、■プルマージン型、■角
度付羽根ファンタービン、■プロペラ等を挙げることが
できる。One feature of the present invention is that the circulating water is caused to flow turbulently and collide with the ultraviolet irradiation lamp protection tube at high speed. As the stirring blade for generating turbulent flow, since the substance to be stirred is water, a stirring blade commonly used for low-viscosity liquids and known per se is used. Specific examples of the shapes of the stirring blades include ■Dake turbine, ■Fan turbine, ■Curved blade fan turbine, ■Farrow blade turbine, ■Faudler type, ■Pull margin type, ■Angle blade fan turbine, and ■Propeller. etc. can be mentioned.
本発明においては、上記したどの形状の撹拌翼を用いて
も、その目的を達成することができるが、好ましくは、
その外周域に邪摩板を配したファンタービンが最も適当
である。In the present invention, the purpose can be achieved using any of the shapes of stirring blades described above, but preferably,
A fan turbine with a friction plate arranged around its outer periphery is most suitable.
撹拌翼の回転数としては、水に乱流を生じせしめる範囲
内の回転数であればいかなるものであっても良いが、低
粘度用撹拌翼を用いた場合、水は、通常レイノルズ数が
数千以上で乱流となり、数百以下になると層流部分が発
生する傾向がある。The rotational speed of the stirring blade may be any rotational speed within the range that causes turbulence in the water, but when using a stirring blade for low viscosity, the water usually has a Reynolds number of several Above 1,000, turbulent flow tends to occur, and below several 100, laminar flow tends to occur.
第２図に、空調装置に本発明の紫外線殺菌装置を用いた
場合の実施態様の１例のフローの概略を示した。本発明
の紫外線殺菌装置１７は、冷却塔１１で冷却された循環
水を送出する循環ポンプ１６に後に設置されている。ま
た、循環冷却水の濾過機を別に設置する場合は、濾過機
と濾過機への循環水供給ポンプの間に本発明の紫外線殺
菌装置を付設することにより、濾過機内における藻類の
発生も防止することができる。FIG. 2 schematically shows the flow of one example of an embodiment in which the ultraviolet sterilizer of the present invention is used in an air conditioner. The ultraviolet sterilizer 17 of the present invention is installed behind a circulation pump 16 that delivers circulating water cooled by the cooling tower 11. In addition, when a filter for circulating cooling water is installed separately, the generation of algae inside the filter can be prevented by attaching the ultraviolet sterilizer of the present invention between the filter and the circulating water supply pump to the filter. be able to.
支血肩
第２図に示した空調装置を作製して実験を行った。循環
水量は１５．０ＯＯＩ２／ｈに設定し、試験前に装置の
洗浄を行い、循環系内にレジオネラ細菌が検出されない
事を確認した。An experiment was conducted by fabricating an air conditioner shown in Figure 2. The amount of circulating water was set at 15.0 OOI2/h, the equipment was cleaned before the test, and it was confirmed that no Legionella bacteria were detected in the circulation system.
第１表に示したとおり、■撹拌翼を付設しない紫外線殺
菌装置、０回転数１．’０ＯＯｒｐ＋＊のファンタービ
ンを付設した紫外線殺菌装置、０回転数１ 、０００ｒ
ｐｍのプルマージン型撹拌機を配設した紫外線殺菌装置
をそれぞれ設置し、４月〜９月の６力月間に渡り連続運
転を行った。As shown in Table 1, ■Ultraviolet sterilizer without stirring blade, 0 rotation speed 1. Ultraviolet sterilizer equipped with '0OOrp+* fan turbine, 0 rotation speed 1, 000r
An ultraviolet sterilizer equipped with a pm pull-margin type stirrer was installed in each case and operated continuously for six months from April to September.
運転開始後１ケ月毎に循環水中のレジオネラ細菌数を測
定し、紫外線照射ランプ保護管の汚損状況の指標とした
。その結果を別表に示す。The number of Legionella bacteria in the circulating water was measured every month after the start of operation, and was used as an indicator of the degree of contamination of the UV irradiation lamp protection tube. The results are shown in the attached table.
別表に示す通り、ファンタービンを付設した紫外線殺菌
装置を設置した場合、６ケ月間の夏期を間に挟んだ連続
運転においてもレジオネラ細菌による汚染は、はとんど
認められなかった。As shown in the attached table, when an ultraviolet sterilizer equipped with a fan turbine was installed, no contamination by Legionella bacteria was observed even during continuous operation over a six-month summer period.
（発明の効果）
本発明によると、紫外線殺菌装置内の紫外線照射ランプ
保護管への汚損物質の付着を防止でき、保護管表面の付
着物の洗浄や保護管の交換をすることな（長時間の使用
が可能である。(Effects of the Invention) According to the present invention, it is possible to prevent fouling substances from adhering to the protection tube of the ultraviolet irradiation lamp in the ultraviolet sterilizer, and there is no need to clean the adhered substances on the surface of the protection tube or replace the protection tube (for a long time). It is possible to use
この紫外線殺菌装置を、例えば、空調装置の冷却水循環
系路に設置すれば、長時間にわたって。For example, if this ultraviolet sterilizer is installed in the cooling water circulation path of an air conditioner, it will last for a long time.
安定的に循環水の殺菌が可能となる。従って、循環冷却
水中に藻類や有害な雑菌が繁殖することなく、特に、空
調装置における冷却塔の場合のような、冷却水が大気に
対して直接接触しても、大気中にレジオネラ細菌等の有
害殺菌の飛散が防止でき、また大気中に飛散する薬剤も
なく安全である。Stable sterilization of circulating water is possible. Therefore, algae and harmful bacteria do not grow in the circulating cooling water, and even if the cooling water comes into direct contact with the atmosphere, as in the case of a cooling tower in an air conditioner, legionella bacteria etc. It is safe because it prevents harmful sterilization from scattering and there are no chemicals that are dispersed into the atmosphere.
第１図は、本発明の紫外線殺菌装置の断面図であり、第
２図は、本発明の紫外線殺菌装置を空調装置の循環系路
に設置した場合のフローの概略図である。
１・・・循還水流入管、２・・・駆動モータ、３・・・
グランドシール、４−・・邪摩板、５・・・撹拌翼、６
・・・保護管、７・・・紫外線照射ランプ、８・・・循
環水流出管、９・・・電源、１０・・・流路、１１−・
−冷却塔、１２・・−冷却水の噴射ノズル、１３・・・
冷却ファン、１４・−・補給水取入口、１５−・・冷却
水の受皿、１６・・・循環ポンプ、１７−・・紫外線殺
菌装置、１８−・−ＰＣ（パッケージ）。
第１図
第２図FIG. 1 is a sectional view of the ultraviolet sterilizer of the present invention, and FIG. 2 is a schematic diagram of the flow when the ultraviolet sterilizer of the present invention is installed in the circulation path of an air conditioner. 1... Circulating water inflow pipe, 2... Drive motor, 3...
Grand seal, 4--jama plate, 5--stirring blade, 6
... protection tube, 7 ... ultraviolet irradiation lamp, 8 ... circulating water outflow pipe, 9 ... power supply, 10 ... flow path, 11-.
- Cooling tower, 12... - Cooling water injection nozzle, 13...
Cooling fan, 14--Supplementary water intake, 15--Cooling water tray, 16--Circulation pump, 17--Ultraviolet sterilizer, 18--PC (package). Figure 1 Figure 2
Claims (1)
、撹拌翼を配設すると共に、その駆動モータを該殺菌装
置の外部に配設せしめたことを特徴とする紫外線殺菌装
置。 ２）循環する水の紫外線照射による殺菌を行う紫外線殺
菌装置において、紫外線照射ランプの保護管表面に乱流
を起こさしめて、該照射ランプ保護管表面への付着性汚
損物質の付着を防止することを特徴とする紫外線殺菌装
置の浄化方法。[Claims] 1) An ultraviolet sterilizer characterized in that a stirring blade is disposed around the ultraviolet irradiation lamp protection tube within the ultraviolet sterilizer, and its drive motor is disposed outside the sterilizer. Device. 2) In an ultraviolet sterilizer that sterilizes circulating water by ultraviolet irradiation, turbulence is caused on the surface of the protection tube of the ultraviolet irradiation lamp to prevent adhesive contaminants from adhering to the surface of the protection tube of the irradiation lamp. Purification method of ultraviolet sterilizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2317990A JPH04190887A (en) | 1990-11-26 | 1990-11-26 | Ultraviolet sterilizer and its purification method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2317990A JPH04190887A (en) | 1990-11-26 | 1990-11-26 | Ultraviolet sterilizer and its purification method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04190887A true JPH04190887A (en) | 1992-07-09 |
Family
ID=18094257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2317990A Pending JPH04190887A (en) | 1990-11-26 | 1990-11-26 | Ultraviolet sterilizer and its purification method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04190887A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08509905A (en) * | 1993-03-05 | 1996-10-22 | トローヤン・テクノロジーズ・アイエヌシー | Fluid treatment system and method |
| JP2010509042A (en) * | 2006-11-08 | 2010-03-25 | ヴェデコ アクチエンゲゼルシャフト | Apparatus and method for improving mixing during UV disinfection of liquids |
| CN103851951A (en) * | 2014-03-28 | 2014-06-11 | 长沙海川节能技术有限公司 | Circulating cooling water dispersing structure and cooling tower with same |
-
1990
- 1990-11-26 JP JP2317990A patent/JPH04190887A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08509905A (en) * | 1993-03-05 | 1996-10-22 | トローヤン・テクノロジーズ・アイエヌシー | Fluid treatment system and method |
| JP2010509042A (en) * | 2006-11-08 | 2010-03-25 | ヴェデコ アクチエンゲゼルシャフト | Apparatus and method for improving mixing during UV disinfection of liquids |
| CN103851951A (en) * | 2014-03-28 | 2014-06-11 | 长沙海川节能技术有限公司 | Circulating cooling water dispersing structure and cooling tower with same |
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