JP2022028381A - 殺菌ランプ - Google Patents
殺菌ランプ Download PDFInfo
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- JP2022028381A JP2022028381A JP2020131749A JP2020131749A JP2022028381A JP 2022028381 A JP2022028381 A JP 2022028381A JP 2020131749 A JP2020131749 A JP 2020131749A JP 2020131749 A JP2020131749 A JP 2020131749A JP 2022028381 A JP2022028381 A JP 2022028381A
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- discharge tube
- light
- discharge
- safety cover
- sterilization lamp
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- 230000001954 sterilising effect Effects 0.000 title claims abstract description 52
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 51
- 229910010272 inorganic material Inorganic materials 0.000 claims abstract description 10
- 239000011147 inorganic material Substances 0.000 claims abstract description 10
- 239000011368 organic material Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 9
- 230000003449 preventive effect Effects 0.000 claims description 5
- 230000002070 germicidal effect Effects 0.000 claims 1
- 230000004048 modification Effects 0.000 description 16
- 238000012986 modification Methods 0.000 description 16
- 238000004519 manufacturing process Methods 0.000 description 11
- 230000000249 desinfective effect Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 239000010453 quartz Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 238000007740 vapor deposition Methods 0.000 description 6
- 230000006866 deterioration Effects 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 4
- 238000011282 treatment Methods 0.000 description 4
- 239000007772 electrode material Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- OPBJIDJILCEYRP-UHFFFAOYSA-N [Kr]Br Chemical compound [Kr]Br OPBJIDJILCEYRP-UHFFFAOYSA-N 0.000 description 1
- JWNBYUSSORDWOT-UHFFFAOYSA-N [Kr]Cl Chemical compound [Kr]Cl JWNBYUSSORDWOT-UHFFFAOYSA-N 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 238000004380 ashing Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005108 dry cleaning Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
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- Apparatus For Disinfection Or Sterilisation (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
Description
図1(A)は、実施形態に係る殺菌ランプの縦断面図であり、図1(B)は、当該殺菌ランプの正面図である。これらの図に示されるように、本実施形態の殺菌ランプは、放電管1と、グランド電極部2Aと、高電圧電極部2Bと、安全カバー3と、遮光部4と、を備える。
放電管1は、紫外光の透過性に優れた石英や合成石英で形成されたチューブ型の容器である。本実施形態では、放電管1として、断面形状がトラック形状である単管が用いられている。放電管1のサイズは、断面の横幅W(図1(A)参照)が10~100mm、断面の高さT(図1(A)参照)が2~10mm、長手方向の長さL(図1(B)参照)が20~1000mmであり、産業用のエキシマ光照射装置に用いられる放電管のサイズに比べて小さい。尚、放電管1の形成材料は、石英や合成石英に限らず、フッ化カルシウム、フッ化マグネシウム、フッ化リチウム等のフッ化物など、別の材料に適宜変更されてもよい。また、放電管1の断面形状は、トラック形状に限らず、真円形状、楕円形状、扁平形状、矩形状など、別の形状に適宜変更されてもよい。
放電管1の外周面のうちの、放電管1の中心を通る高さ方向の仮想線Lv(図1(A)参照)と交わる2つの面(本実施形態では、断面形状であるトラックの直線部分に相当する2つの平坦面)をそれぞれ放電管1の正面1a及び背面1bとして、正面1aにグランド電極部2Aが形成され、背面1bに高電圧電極部2Bが形成されている。本実施形態では、これらの電極部は、正面1a及び背面1bへの電極材料の蒸着によって層状に形成されている。また、電極材料にはアルミニウムが用いられている。
安全カバー3は、高電圧電極部2Bを覆うことで電圧印加時の感電を防止するカバーであり、電気絶縁性の有機材料で形成されている。電気絶縁性の有機材料には、特に限定されるものではないが、ポリエーテルエーテルケトン(PEEK)、ポリエチレン(PE)、ポリテトラフルオロエチレン(PTFE)、アクリルニトリル・ブタジエン・スチレン(ABS)樹脂などが用いられる。
遮光部4は、放電管1と安全カバー3との間に介在することにより、放電管1から安全カバー3へ向かうエキシマ光を遮断する部分であり、電気絶縁性の無機材料で形成されている。本実施形態では、遮光部4として、安全カバー3の内面に沿ってコの字状に形成された遮光板が用いられている。電気絶縁性の無機材料は、特に限定されるものではないが、珪素など、主に紫外光のうちの230nm以下の短波長域の光に対する反射率が高い材料であることが好ましい。
[2-1]第1変形例
上述した殺菌ランプにおいて、グランド電極部2A及び高電圧電極部2Bは、蒸着などによって放電管1と一体に構成される場合に限らず、放電管1と分離可能な別の装置として安全カバー3側に設けられていてもよい。以下、具体的に説明する。
図3は、第2変形例に係る殺菌ランプの縦断面図である。図3に示されるように、殺菌ランプは、230nmより大きい長波長域の光を除去する除去手段として、放電管1の外部(具体的には、放電管1の正面1a側)に設けられたフィルタ5を更に備えていてもよい。この場合、放電管1で生成されたエキシマ光のうちのフィルタ5を通過した光が、殺菌用の紫外光として殺菌ランプから供給される。
フィルタ5は、放電管1と分離可能な別の装置として構成される場合に限らず、放電管1と一体に構成されてもよい。具体的には、フィルタ5は、放電管1の正面1aにハフニューム等を蒸着させることで形成された蒸着膜であってもよい。
上述した殺菌ランプにおいて、放電管1の形成材料には、石英、合成石英、フッ化物などにハフニューム等を添加したものなど、波長が230nmより大きい紫外光の透過を抑制できる材料が用いられてもよい。この場合、放電管1自体が、230nmより大きい長波長域の光を除去する除去手段として機能することになる。
上記実施形態の殺菌ランプによれば、小型化が実現され、それに伴って放電管1も小型化されることになる。その一方で、放電管1の小型化により、グランド電極部2Aと高電圧電極部2Bとの間の距離が小さくなり、それが原因で放電管1には沿面放電が生じやすくなる。そこで、放電管1には、沿面放電を防止する防止手段が設けられてもよい。以下、そのような防止手段として、2つの例について説明する。
上述した殺菌ランプにおいて、放電管1は、チューブ状のものに限らず、薄箱形状を呈したフラット型のものに適宜変更されてもよい。
上述した殺菌ランプにおいて、安全カバー3自体が、電気絶縁性の無機材料で形成されてもよい。この場合、エキシマ光が安全カバー3に到達したとしても、エキシマ光による安全カバー3の劣化(分解)が生じにくくなるため、遮光部4が不要になる。
1a 正面
1b 背面
2A グランド電極部
2B 高電圧電極部
3 安全カバー
4 遮光部
5 フィルタ
11 突起
12 溝
31 正面カバー
31a 開口
32 背面カバー
33 付勢部材
Claims (4)
- エキシマ光を生成するための放電用ガスで充たされた放電管と、
前記放電管内に放電を生じることにより、前記放電用ガスを励起させるグランド電極部及び高電圧電極部と、
電気絶縁性の有機材料で形成されており、前記高電圧電極部を覆う安全カバーと、
電気絶縁性の無機材料で形成されており、前記放電管と前記安全カバーとの間に介在することにより、前記放電管から前記安全カバーへ向かう前記エキシマ光を遮断する遮光部と、
を備える、殺菌ランプ。 - 前記無機材料は、230nm以下の短波長域の光に対する反射率が高い材料である、請求項1に記載の殺菌ランプ。
- 230nmより大きい長波長域の光を除去する除去手段を更に備え、
前記放電管で生成されたエキシマ光のうちの前記除去手段を通過した光を、殺菌用の紫外光として供給する、請求項1又は2に記載の殺菌ランプ。 - 前記放電管には、沿面放電を防止する防止手段が設けられている、請求項1~3の何れかに記載の殺菌ランプ。
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