JPH09262419A - Filter for air conditioner - Google Patents
Filter for air conditionerInfo
- Publication number
- JPH09262419A JPH09262419A JP8099315A JP9931596A JPH09262419A JP H09262419 A JPH09262419 A JP H09262419A JP 8099315 A JP8099315 A JP 8099315A JP 9931596 A JP9931596 A JP 9931596A JP H09262419 A JPH09262419 A JP H09262419A
- Authority
- JP
- Japan
- Prior art keywords
- stainless steel
- filter
- air conditioner
- tio
- weight
- 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.)
- Withdrawn
Links
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 32
- 239000010935 stainless steel Substances 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000000137 annealing Methods 0.000 claims abstract description 15
- 239000002344 surface layer Substances 0.000 claims abstract description 9
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000002253 acid Substances 0.000 claims abstract description 6
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 4
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 28
- 230000001699 photocatalysis Effects 0.000 abstract description 3
- 229910052802 copper Inorganic materials 0.000 abstract description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 6
- 230000000843 anti-fungal effect Effects 0.000 abstract 3
- 241000233866 Fungi Species 0.000 abstract 1
- 229940121375 antifungal agent Drugs 0.000 abstract 1
- 230000001877 deodorizing effect Effects 0.000 abstract 1
- 230000000844 anti-bacterial effect Effects 0.000 description 19
- 239000002436 steel type Substances 0.000 description 10
- 239000007789 gas Substances 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 7
- 238000000354 decomposition reaction Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 4
- 239000003242 anti bacterial agent Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 244000052616 bacterial pathogen Species 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000004833 X-ray photoelectron spectroscopy Methods 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000003205 fragrance Substances 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 235000002639 sodium chloride Nutrition 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- XWROUVVQGRRRMF-UHFFFAOYSA-N F.O[N+]([O-])=O Chemical compound F.O[N+]([O-])=O XWROUVVQGRRRMF-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000000845 anti-microbial effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 238000012423 maintenance Methods 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
- 239000011259 mixed solution Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 150000002830 nitrogen compounds Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 239000008363 phosphate buffer Substances 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/30—Capture or disposal of greenhouse gases of perfluorocarbons [PFC], hydrofluorocarbons [HFC] or sulfur hexafluoride [SF6]
Landscapes
- Catalysts (AREA)
- Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
- Filtering Materials (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ＴｉＯ2 の光触媒作用
を活用し、殺菌分解能及び悪臭分解能を付与した空調器
用フィルタに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter for an air conditioner which utilizes the photocatalytic action of TiO 2 to impart sterilization resolution and malodor resolution.
【０００２】[0002]
【従来の技術】空調器を長期間使用すると、機器やダク
ト内に付着したゴミ等にカビや雑菌が繁殖し、異臭が発
生することがある。そのため、空気取入れ口等に設置さ
れているフィルタを定期的に掃除したり、場合によって
は分解して掃除することが必要となる。しかし、分解清
掃には面倒な作業が要求され、費用が嵩む。異臭は、芳
香剤の使用によって抑えることもできるが、芳香剤の定
期的な頻繁な交換が必要とされる。また、多くの人々が
出入りするデパート，量販店，公共施設，会議場，病院
等では、場内の空気が雑菌や病原菌で汚染された場合、
不特定多数の人々に感染することも懸念される。2. Description of the Related Art When an air conditioner is used for a long period of time, molds and germs may propagate on dust and the like adhering to the inside of equipment and ducts, and may give off an offensive odor. Therefore, it is necessary to regularly clean the filter installed at the air intake port or the like, or disassemble and clean it in some cases. However, disassembling and cleaning requires laborious work and is expensive. Off-flavours can also be suppressed by the use of fragrances, but regular and frequent replacement of fragrances is required. Also, in department stores, mass retailers, public facilities, conference halls, hospitals, etc. where many people come and go, if the air in the hall is contaminated with various bacteria and pathogens,
There is also concern that it will infect an unspecified number of people.
【０００３】[0003]
【発明が解決しようとする課題】抗菌剤を混入したプラ
スチックス等を機器やダクトの構成部材として使用する
ことにより、雑菌の繁殖を抑制する方法が採用されてい
る。しかし、抗菌剤を混入したプラスチックス等では、
所定時間が経過すると抗菌剤が消耗され、抗菌作用が弱
くなる。他方、病原菌等による汚染がなく、人体や環境
に安全な空調設備に対する要求は強まる一方である。本
発明は、このような問題を解消すべく案出されたもので
あり、抗菌性及び悪臭分解機能が半永久的に持続するス
テンレス鋼を素材として使用することにより、人体及び
環境に安全な空調器用フィルタを提供することを目的と
する。A method of suppressing the growth of various bacteria has been adopted by using plastics or the like mixed with an antibacterial agent as a constituent member of equipment and ducts. However, with plastics mixed with antibacterial agents,
After a lapse of a predetermined time, the antibacterial agent is consumed and the antibacterial action becomes weak. On the other hand, the demand for air-conditioning equipment that is safe for the human body and the environment without being contaminated by pathogenic bacteria is increasing. The present invention has been devised to solve such a problem, and by using stainless steel as a material, which has an antibacterial property and a foul odor decomposition function for a semi-permanent period, it can be used for an air conditioner that is safe for the human body and the environment. Intended to provide a filter.
【０００４】[0004]
【課題を解決するための手段】本発明の空調器用フィル
タは、その目的を達成するため、０．１〜０．６重量％
のＴｉを含むステンレス鋼板を素材とし、該表面にＴｉ
Ｏ2 が２０原子％以上濃化された表面層が設けられてい
ることを特徴とする。素材としては、更に０．３〜０．
７重量％のＣｕ及び／又は０．４〜３．０重量％のＭｏ
を含むステンレス鋼板を使用することもできる。ＴｉＯ
2 濃化表面層は、露点−４０〜−６５℃のＨ2 ガス雰囲
気又はＨ2 ９０体積％以上のＨ2 −Ｎ2 混合ガス雰囲気
中で８５０〜１０００℃に加熱する光輝焼鈍をステンレ
ス鋼素材に施すことにより形成される。光輝焼鈍後、更
にフッ酸０．５〜５重量％及び硝酸５〜２０重量％を含
む混酸溶液で浸漬処理することもできる。In order to achieve the object, the air conditioner filter of the present invention is 0.1 to 0.6% by weight.
Made of stainless steel containing Ti
It is characterized in that a surface layer in which O 2 is enriched by 20 atomic% or more is provided. As the material, 0.3 to 0.
7 wt% Cu and / or 0.4-3.0 wt% Mo
It is also possible to use a stainless steel plate containing. TiO
2 concentrated surface layer of stainless steel material for bright annealing heating to 850 to 1000 ° C. at a dew point of -40 to-65 ° C. in an atmosphere of H 2 gas or H 2 90 vol% or more of H 2 -N 2 mixed gas atmosphere It is formed by applying to. After bright annealing, it may be further subjected to immersion treatment with a mixed acid solution containing 0.5 to 5% by weight of hydrofluoric acid and 5 to 20% by weight of nitric acid.
【０００５】[0005]
【実施の形態】抗菌性を示す金属や酸化物のうち、Ｔｉ
Ｏ2 は、太陽光，蛍光灯，水銀灯等から光を照射すると
酸素を活性酸素に変え、病原菌に含まれている酵素を分
解し、細菌を死滅させる光触媒作用を呈することが知ら
れている。ＴｉＯ2 のこの作用に着目し、食品加工工場
等においてＴｉＯ2 の使用が検討されている。ＴｉＯ2
を利用した抗菌作用は、光の照射があったときに初めて
発現されるものではあるが、他の抗菌剤と異なり抗菌作
用が半永久的に持続されることに特徴がある。本発明者
等は、殺菌や悪臭の源となる硫黄化合物，窒素化合物等
の分解機能を呈するＴｉＯ2 に着目し、ステンレス鋼の
表面皮膜中にＴｉＯ2 を形成させる方法を詳細に調査検
討してきた。その結果、特願平７−２１２９１号で提案
したように、Ｔｉ含有ステンレス鋼を素材として、最終
焼鈍として光輝焼鈍するとき、有効なＴｉＯ2 含有皮膜
が形成されることを見い出した。また、焼鈍雰囲気の組
成や焼鈍温度の制御、更には焼鈍後にフッ酸−硝酸の混
酸溶液で浸漬処理することにより、表面皮膜中にＴｉＯ
2 を濃化させることができ、しかも耐食性を損なうこと
なくＴｉＯ2 の殺菌作用及び悪臭分解機能を利用でき
る。BEST MODE FOR CARRYING OUT THE INVENTION Among metals and oxides showing antibacterial properties, Ti
O 2 is known to exhibit a photocatalytic action that converts oxygen into active oxygen when it is irradiated with light from sunlight, fluorescent lamps, mercury lamps, etc., decomposes enzymes contained in pathogenic bacteria, and kills bacteria. Focusing on this action of TiO 2, the use of TiO 2 has been studied in food processing plants and the like. TiO 2
The antibacterial action utilizing the is first expressed when exposed to light, but unlike other antibacterial agents, the antibacterial action is semipermanently maintained. The present inventors have focused their attention on TiO 2 that exhibits a decomposition function of sulfur compounds, nitrogen compounds, etc., which are sources of sterilization and malodor, and have investigated in detail the method of forming TiO 2 in the surface coating of stainless steel. . As a result, as proposed in Japanese Patent Application No. 7-21291, it was found that an effective TiO 2 -containing film is formed when the final annealing is bright annealing using Ti-containing stainless steel as a raw material. In addition, the composition of the annealing atmosphere and the annealing temperature are controlled, and further, after the annealing, the surface is coated with TiO 2 in the hydrofluoric acid-nitric acid mixed solution.
2 can be concentrated, and the bactericidal action and odor decomposition function of TiO 2 can be utilized without impairing the corrosion resistance.
【０００６】ＴｉＯ2 の抗菌作用及び悪臭分解機能を発
揮させるためには、酸化物状態のＴｉ濃度に換算して皮
膜中のＴｉＯ2 濃度を２０原子％以上にすることが必要
である。このようなＴｉＯ2 が濃化した表面皮膜は、
０．１〜０．６重量％のＴｉを含むステンレス鋼を露点
−４０〜−６５℃のＨ2 ガス又は９０％以上のＨ2 −残
部Ｎ2 の混合ガス中で８５０〜１０００℃の熱処理を施
すことにより形成される。焼鈍雰囲気としては、他のＨ
2 −Ｎ2 混合ガス，アンモニア分解ガス，Ｈ2 ガス等を
使用することもできる。更に、０．５〜５重量％のフッ
酸及び５〜２０重量％の硝酸を含む混酸溶液中に熱処理
後のステンレス鋼を浸漬するとき、ＴｉＯ2 濃度が一層
上昇すると共に、Ｃｕ含有ステンレス鋼素材では抗菌性
をもつＣｕが析出する。析出したＣｕは、光照射がない
ときにＴｉＯ2 に代わって抗菌作用を発現する。[0006] In order to exert the antimicrobial action of TiO 2 and malodorous decomposition function, it is necessary to make the TiO 2 concentration in the film in terms of Ti concentration in the oxide state more than 20 atomic%. Such a surface film enriched with TiO 2 is
A stainless steel containing 0.1 to 0.6% by weight of Ti is heat-treated at 850 to 1000 ° C. in a H 2 gas having a dew point of −40 to −65 ° C. or a mixed gas of 90% or more of H 2 −balance N 2. It is formed by applying. As the annealing atmosphere, other H
2- N 2 mixed gas, ammonia decomposition gas, H 2 gas, etc. can also be used. Furthermore, when the heat-treated stainless steel is immersed in a mixed acid solution containing 0.5 to 5% by weight of hydrofluoric acid and 5 to 20% by weight of nitric acid, the TiO 2 concentration is further increased, and a Cu-containing stainless steel material is obtained. Then, Cu having antibacterial properties is deposited. The deposited Cu exhibits an antibacterial action in place of TiO 2 when there is no light irradiation.
【０００７】光輝焼鈍によってＴｉＯ2 を濃化させた表
面皮膜をもつステンレス鋼を空調器用フィルタとして使
用する場合、フィルタを網目状に加工することから、使
用されるステンレス鋼素材には、抗菌性，悪臭分解能の
外に良好な表面性状をもつことが要求される。この点、
表面欠陥の原因となるクラスタ状介在物の発生を可能な
限り避けることが重要であり、この意味でＴｉ含有量の
上限が０．６重量％に設定される。空調器のフィルタ
は、外壁に設けることもある。そのため、海岸地域では
飛来する海塩粒子に起因する赤錆や、屋内配置であって
も結露水滴の乾燥時に発生し易いしみ状の錆も含め、ス
テンレス鋼素材が優れた耐孔食性を示すことが必要とさ
れる。そこで、不動態皮膜の再生を促進させ耐孔食性の
改善に有効なＭｏを、必要に応じて０．４〜３．０重量
％の範囲で添加する。When using stainless steel having a surface film in which TiO 2 is concentrated by bright annealing as a filter for an air conditioner, since the filter is processed into a mesh shape, the stainless steel material used has antibacterial properties, It is required to have good surface properties in addition to the bad odor resolution. In this regard,
It is important to avoid the occurrence of cluster-like inclusions that cause surface defects as much as possible, and in this sense, the upper limit of the Ti content is set to 0.6% by weight. The filter of the air conditioner may be provided on the outer wall. Therefore, stainless steel materials may exhibit excellent pitting corrosion resistance, including red rust caused by flying sea salt particles in the coastal area, and even stain-like rust that easily occurs when the water droplets are condensed even when placed indoors. Needed. Therefore, Mo, which is effective in promoting regeneration of the passive film and improving pitting corrosion resistance, is added in a range of 0.4 to 3.0% by weight as required.
【０００８】ＴｉＯ2 が持つ光触媒としての機能を発現
させるためには、太陽光，蛍光灯，紫外線等を照射する
必要がある。通常の空調器用フィルタでは、外面をプラ
スチックスや金属の格子等で覆う場合もあるが、カバー
の材質を透明樹脂にし、或いはフィルタの露出割合を増
加させること等により太陽光，蛍光灯等からの光の入射
を促進させる。また、機器やダクト内にたとえば５Ｗ程
度の小型蛍光灯を設置する方法も採用できる。これによ
りＴｉＯ2 が再活性化され、優れた殺菌作用及び悪臭分
解能が持続する。太陽光等を利用する空調器のフィルタ
では、抗菌作用がその日の日射量に影響されることもあ
る。このような場合には、合金組成にＣｕを含むステン
レス鋼を使用し、光輝焼鈍後に混酸液に軽く浸漬するこ
とによって表層にＣｕを析出させ、析出したＣｕで抗菌
作用を補完し、日射量に起因する抗菌効果の変動を抑え
ることができる。In order to realize the function of TiO 2 as a photocatalyst, it is necessary to irradiate sunlight, fluorescent lamps, ultraviolet rays and the like. In the case of a normal air conditioner filter, the outer surface may be covered with plastics or a metal grid, but the cover material is made of transparent resin, or the exposure ratio of the filter is increased to protect the filter from sunlight, fluorescent lamps, etc. Promotes the incidence of light. Also, a method of installing a small fluorescent lamp of, for example, about 5 W in the device or the duct can be adopted. As a result, TiO 2 is reactivated, and excellent bactericidal action and bad odor resolution are maintained. In an air conditioner filter that uses sunlight or the like, the antibacterial action may be affected by the amount of solar radiation on that day. In such a case, stainless steel containing Cu in the alloy composition is used, and after light annealing, it is lightly dipped in a mixed acid solution to precipitate Cu on the surface layer, and the precipitated Cu complements the antibacterial action to reduce the amount of solar radiation. It is possible to suppress the variation of the antibacterial effect caused by it.
【０００９】[0009]
実施例１：（ＴｉＯ2 濃化表面皮膜をもつステンレス鋼
の性能試験） 表１に示すようにＴｉ含有量が異なる１７〜１８Ｃｒフ
ェライト系ステンレス鋼及びＭｏを添加した１８Ｃｒフ
ェライト系ステンレス鋼の板厚０．１５ｍｍの冷延コイ
ルを使用し、露点−５２〜−６０℃の９３％Ｈ2 −Ｎ2
ガス中で９５０〜１０００℃の熱処理を施した。得られ
た皮膜中のＴｉＯ2 濃度，表面疵の状態及び耐食性を表
２に示す。表２におけるＴｉＯ2 濃度は、Ｘ線光電子分
光分析装置（ＥＳＣＡ）で皮膜組成を分析し、Ｃを除い
た金属状態の金属，酸化物及び窒化物状態の金属の総金
属分及び酸素の合計を１００原子％として求めた。耐赤
錆性は、３０℃の３．５％ＮａＣｌ水溶液中でＪＩＳ
Ｇ０５７７に準じて孔食電位（Ｖｃ' ２００）を測定し
て評価した。Example 1: (Performance test of stainless steel having TiO 2 concentrated surface coating) As shown in Table 1, plate thicknesses of 17 to 18Cr ferritic stainless steels having different Ti contents and 18Cr ferritic stainless steel to which Mo is added Using a cold rolled coil of 0.15 mm, dew point of -52 to -60 ℃ 93% H 2 -N 2
Heat treatment was performed at 950 to 1000 ° C. in gas. Table 2 shows the TiO 2 concentration in the obtained coating, the state of surface defects and the corrosion resistance. The TiO 2 concentration in Table 2 was obtained by analyzing the film composition with an X-ray photoelectron spectroscopy analyzer (ESCA), and calculating the total metal content of the metals in the metallic state excluding C, the oxides and the metals in the nitride state, and the sum of oxygen. It was calculated as 100 atom%. Red rust resistance is JIS in 3.5% NaCl aqueous solution at 30 ℃.
The pitting potential (Vc '200) was measured and evaluated according to G0577.
【００１０】 [0010]
【００１１】 [0011]
【００１２】表２にみられるように、Ｔｉ含有量が０．
０４重量％の鋼種Ａを除き、他の鋼種Ｂ〜Ｄでは光輝焼
鈍によって表面皮膜中に２０原子％以上のＴｉＯ2 が形
成された。孔食電位をみると、鋼種Ａ，Ｂがほぼ同じ
０．２Ｖ vs.ＳＣＥであったが、２重量％のＭｏを含む
鋼種Ｃでは０．６５Ｖ vs.ＳＣＥ，鋼種Ｄでは０．９７
vs.ＳＣＥと高い孔食電位を示した。通常、空気取り込
み口が外壁で、そこにフィルタを設置する場合、結露水
が乾燥する過程でステンレス鋼の自然電位は０．４〜
０．６ vs.ＳＣＥに達する。鋼種Ｃ，Ｄの孔食電位は、
この自然電位よりも高いので、海岸地域の建築物に使用
しても赤錆の発生がないことが予想される。以上の結果
から、ステンレス鋼に添加されるＴｉ量は、抗菌性から
要求される皮膜中に所定のＴｉＯ2 濃度を得るために
０．１重量％以上が必要とされることが判る。他方、Ｔ
ｉ含有量の上限は、表面疵のないことが要求される空調
器用フィルタとしての用途から０．６重量％に規定され
る。また、３．０重量％を上限としてＭｏを添加するこ
とにより、優れた耐孔食性が発揮され、赤錆防止に有効
なことが判る。As can be seen from Table 2, the Ti content is 0.
With the exception of the steel type A of 04% by weight, in the other steel types B to D, 20 atomic% or more of TiO 2 was formed in the surface film by bright annealing. Looking at the pitting potential, the steel types A and B had almost the same 0.2 V vs. SCE, but the steel type C containing 2 wt% Mo had 0.65 V vs. SCE and the steel type D had 0.97.
It showed high pitting potential vs. SCE. Normally, when the air intake port is an outer wall and a filter is installed there, the natural potential of stainless steel is 0.4 ~ in the process of drying the condensed water.
Reach 0.6 vs. SCE. The pitting potentials of steel types C and D are
Since it is higher than this self-potential, it is expected that no red rust will occur even if it is used for buildings in coastal areas. From the above results, it is understood that the amount of Ti added to stainless steel is required to be 0.1% by weight or more in order to obtain a predetermined TiO 2 concentration in the film required for antibacterial properties. On the other hand, T
The upper limit of the i content is specified to be 0.6% by weight for use as a filter for an air conditioner which is required to have no surface flaw. Further, it is understood that by adding Mo with 3.0% by weight as the upper limit, excellent pitting corrosion resistance is exhibited and it is effective in preventing red rust.
【００１３】実施例２：（空調器用フィルタとして使用
する場合の性能試験） 以下に掲げる板厚０．１５ｍｍの各種ステンレス鋼素材
を用意し、全面に刃を植え付けたロール成形機で網目状
のラス加工を施し、空調器用フィルタを作製した。 本発明例１：鋼種Ｂを１００％Ｈ2 雰囲気中で９５０℃
に熱処理したステンレス鋼素材 本発明例２：鋼種Ｄに同様な熱処理を施したステンレス
鋼素材 本発明例３，４：Ｔｉ：０．３６重量％，Ｃｕ：０．４
９重量％，Ｎ：０．００７重量％を含む鋼種Ｅに同様な
熱処理を施した後、混酸溶液に浸漬処理することにより
表層にＣｕを析出させたものステンレス鋼素材 比較例：鋼種Ａに同様な熱処理を施し、Ｔｉ含有量が１
０原子％未満の表面皮膜を形成したステンレス鋼素材Example 2: (Performance test when used as a filter for an air conditioner) Various stainless steel materials having a plate thickness of 0.15 mm listed below were prepared, and a mesh lath was formed by a roll forming machine in which blades were planted on the entire surface. It processed and produced the filter for air conditioners. Inventive Example 1: Steel type B in a 100% H 2 atmosphere at 950 ° C.
Example 2 of the present invention: Stainless steel material obtained by subjecting the steel type D to the same heat treatment as Example 3 of the present invention 3, 4: Ti: 0.36% by weight, Cu: 0.4
Steel type E containing 9 wt% and N: 0.007 wt% was subjected to the same heat treatment, and then Cu was precipitated on the surface layer by immersion treatment in a mixed acid solution. Stainless steel material Comparative example: Similar to steel type A Heat treatment, Ti content is 1
Stainless steel material with a surface coating of less than 0 atomic%
【００１４】各フィルタを既存のエアコンに取り付け、
更にエアコン機内に５Ｗの蛍光灯を組み込んだ。そし
て、各空調器フィルタを次の方法で抗菌性試験した。予
めブイヨン培地で３５℃，１６〜２０時間振盪培養した
病原性大腸菌（Ｅｓｈｅｒｉｃｈｉａ ｃｏｌｉ）の培
養液を滅菌リン酸緩衝液で２０，０００倍に希釈した菌
液を調製した。この菌液を空調器フィルタの表面に１ｍ
ｌ滴下し、エアコン機内に取り付けた蛍光灯を点灯して
光照射し、８時間後の生菌数をコロニー法で測定した。
なお、これらの実験は、室温で行った。表３の調査結果
にみられるように、皮膜中のＴｉＯ2 濃度が１０原子％
未満の比較例では、８時間後の生菌数にほとんど変化が
みられなかった。他方、皮膜中のＴｉＯ2 濃度が２０原
子％以上の本発明例１〜４では、明らかに生菌数が減少
していた。また、本発明例４の光を照射しなかった場合
でも、生菌数の減少がみられ、Ｃｕ添加ステンレス鋼の
使用によってＴｉＯ2 皮膜の弱点が補完されることが確
認された。Attach each filter to the existing air conditioner,
Furthermore, a 5W fluorescent lamp was installed in the air conditioner. Then, each air conditioner filter was tested for antibacterial properties by the following method. A culture solution of pathogenic Escherichia coli, which had been shake-cultured in a broth medium at 35 ° C. for 16 to 20 hours in advance, was diluted 20,000 times with a sterile phosphate buffer to prepare a bacterial solution. 1m of this bacterial solution on the surface of the air conditioner filter
Then, a fluorescent lamp attached to the inside of the air conditioner was turned on to irradiate with light, and the viable cell count after 8 hours was measured by the colony method.
Note that these experiments were performed at room temperature. As can be seen from the survey results in Table 3, the TiO 2 concentration in the film is 10 atomic%.
In the comparative examples below, there was almost no change in the viable cell count after 8 hours. On the other hand, in Examples 1 to 4 of the present invention in which the TiO 2 concentration in the film was 20 atomic% or more, the viable cell count was clearly reduced. Further, even when light of Example 4 of the present invention was not irradiated, the viable cell count was reduced, and it was confirmed that the use of Cu-added stainless steel complements the weakness of the TiO 2 film.
【００１５】 [0015]
【００１６】[0016]
【発明の効果】以上に説明したように、本発明の空調器
用フィルタは、耐食性に優れたステンレス鋼を素材と
し、抗菌作用及び悪臭分解機能を半永久的に示すＴｉＯ
2 を濃化させた表面層を素材表面に形成している。これ
により、耐食性を始めとして雑菌の発生・繁殖がなく、
悪臭分解能をもち、人体及び環境に安全な空調器用フィ
ルタとなる。このフィルタは、コスト的には従来品に比
較して若干高いものの、ステンレス鋼自体に抗菌性を持
たせているので、加工後の抗菌処理や脱臭処理が不要
で、使用中のメンテナンス負荷が小さい上に半永久的に
使用可能なことから、ユーザの経済的負担を最小限に抑
えることができる。また、自動車用，家庭用，大型建築
物用等の空調機器のフィルタとして使用されるばかりで
なく、抗菌性が要求される水処理，大気処理，土壌処理
等の分野においても有害物，悪臭物の分解機能や殺菌機
能が要求される装置に対しても適用される。As described above, the air conditioner filter of the present invention is made of stainless steel having excellent corrosion resistance, and is semi-permanently exhibiting antibacterial action and odor decomposition function.
A thick surface layer of 2 is formed on the surface of the material. As a result, there is no outbreak and propagation of various bacteria including corrosion resistance,
It has an offensive odor resolution, and is a filter for air conditioners that is safe for the human body and the environment. Although this filter is slightly higher in cost than conventional products, it does not require antibacterial treatment or deodorization after processing because the stainless steel itself has antibacterial properties, and maintenance load during use is small. Since it can be used semipermanently, the financial burden on the user can be minimized. In addition, it is not only used as a filter for air conditioners for automobiles, households, large buildings, etc., but also harmful substances and odorous substances in the fields of water treatment, air treatment, soil treatment, etc., which require antibacterial properties. It can also be applied to equipment that requires a decomposition function or sterilization function.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ０１Ｊ 35/02 Ｂ０１Ｄ 53/36 Ｊ Ｆ２４Ｆ 1/00 ＺＡＢＨ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification number Office reference number FI technical display location B01J 35/02 B01D 53/36 J F24F 1/00 ZABH
Claims (4)
ンレス鋼板を素材とし、該表面にＴｉＯ2 が２０原子％
以上濃化された表面層が設けられている空調器用フィル
タ。1. A stainless steel plate containing 0.1 to 0.6% by weight of Ti is used as a material, and 20% by atom of TiO 2 is present on the surface thereof.
An air conditioner filter provided with the surface layer enriched above.
０．７重量％のＣｕ及び／又は０．４〜３．０重量％の
Ｍｏを含むステンレス鋼板を素材とし、該表面にＴｉＯ
2 が２０原子％以上濃化された表面層が設けられている
空調器用フィルタ。2. Ti to 0.1-0.6 wt% and 0.3-
A stainless steel plate containing 0.7% by weight of Cu and / or 0.4 to 3.0% by weight of Mo was used as a material, and TiO 2 was formed on the surface.
An air conditioner filter provided with a surface layer in which 2 is concentrated by 20 atom% or more.
が露点−４０〜−６５℃のＨ2 ガス雰囲気又はＨ2 ９０
体積％以上のＨ2 −Ｎ2 混合ガス雰囲気中で８５０〜１
０００℃に加熱する光輝焼鈍を施したものである空調器
用フィルタ。3. The stainless steel material according to claim 1 or 2, wherein the dew point is −40 to −65 ° C. in a H 2 gas atmosphere or H 2 90.
850 to 1 in a H 2 —N 2 mixed gas atmosphere of volume% or more
A filter for an air conditioner that has been subjected to bright annealing that is heated to 000 ° C.
５〜５重量％及び硝酸５〜２０重量％を含む混酸溶液で
浸漬処理したフェライト系ステンレス鋼を素材とする空
調器用フィルタ。4. After the bright annealing according to claim 3, hydrofluoric acid of 0.
A filter for an air conditioner, which is made of ferritic stainless steel that has been immersed in a mixed acid solution containing 5 to 5% by weight and nitric acid 5 to 20% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8099315A JPH09262419A (en) | 1996-03-27 | 1996-03-27 | Filter for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8099315A JPH09262419A (en) | 1996-03-27 | 1996-03-27 | Filter for air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09262419A true JPH09262419A (en) | 1997-10-07 |
Family
ID=14244215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8099315A Withdrawn JPH09262419A (en) | 1996-03-27 | 1996-03-27 | Filter for air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09262419A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11216276A (en) * | 1998-02-02 | 1999-08-10 | Matsushita Electric Ind Co Ltd | Manufacture of edge tool |
| CN103170321A (en) * | 2013-04-11 | 2013-06-26 | 中国科学院生态环境研究中心 | Titanium dioxide catalyst for photocatalytic purification of ammonia gas, and preparation method and use thereof |
-
1996
- 1996-03-27 JP JP8099315A patent/JPH09262419A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11216276A (en) * | 1998-02-02 | 1999-08-10 | Matsushita Electric Ind Co Ltd | Manufacture of edge tool |
| CN103170321A (en) * | 2013-04-11 | 2013-06-26 | 中国科学院生态环境研究中心 | Titanium dioxide catalyst for photocatalytic purification of ammonia gas, and preparation method and use thereof |
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