JPH0636878B2 - Structure of paper dust collecting electrode - Google Patents
Structure of paper dust collecting electrodeInfo
- Publication number
- JPH0636878B2 JPH0636878B2 JP6195185A JP6195185A JPH0636878B2 JP H0636878 B2 JPH0636878 B2 JP H0636878B2 JP 6195185 A JP6195185 A JP 6195185A JP 6195185 A JP6195185 A JP 6195185A JP H0636878 B2 JPH0636878 B2 JP H0636878B2
- Authority
- JP
- Japan
- Prior art keywords
- dust collecting
- electrode
- electrodes
- paper
- collecting electrode
- 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
- 239000000428 dust Substances 0.000 title claims description 40
- 239000002245 particle Substances 0.000 claims description 3
- 239000000123 paper Substances 0.000 description 21
- 239000000463 material Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000011087 paperboard Substances 0.000 description 3
- 238000004381 surface treatment Methods 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000012717 electrostatic precipitator Substances 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 235000002597 Solanum melongena Nutrition 0.000 description 1
- 244000061458 Solanum melongena Species 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Electrostatic Separation (AREA)
Description
【発明の詳細な説明】 本発明は、電気集塵装置に使用される紙製集塵電極に関
するものである。Description: TECHNICAL FIELD The present invention relates to a paper dust collecting electrode used in an electrostatic dust collector.
通常、紙は絶縁体として扱われているが、厳密にいえば
半導体として考えるべき性質を具備していることが知ら
れている。たとえば、高電圧を印加すると紙全体がある
電位を示すことになり、微小電流が流れる。かかる性質
を利用して電気集塵を行うことができる。（例えば本出
願人にかかる公開特許公報昭５９−６９１６２号参
照。） ただし、空気中の湿度の変化によって紙の固有抵抗が１
ＭΩ-cm（相対湿度95%から10８ＭΩ-cm（相対湿度20%）
まで大幅に変化するため、これに対する対策が必要であ
る。Paper is usually treated as an insulator, but it is known that it has the properties to be considered as a semiconductor in a strict sense. For example, when a high voltage is applied, the whole paper shows a certain potential, and a minute current flows. By utilizing this property, electrostatic dust collection can be performed. (See, for example, Japanese Laid-Open Patent Publication No. 59-69162 of the present applicant.) However, the specific resistance of the paper is 1 due to the change of humidity in the air.
MΩ- cm (95% relative humidity to 10 8 MΩ- cm (20% relative humidity)
Since it will change drastically, it is necessary to take measures against this.
集塵にあたって電極へ荷電微粒子を付着させるに必要な
電流は、10-4μA/cm２であることが知られている。電極
間隔 3mmの集塵室における集塵電圧は約 3000 v であ
り、電極内の電圧降下を 10%すなわち 300v を許容する
ものとすれば、電極の固有抵抗 x〔M Ω〕は次式のよう
になる。It is known that the current required to attach the charged fine particles to the electrode for dust collection is 10 −4 μA / cm 2 . The dust collection voltage in a dust collection chamber with an electrode spacing of 3 mm is about 3000 v, and if the voltage drop in the electrode is allowed to be 10%, that is, 300 v, the specific resistance x (MΩ) of the electrode is become.
10-4〔μA 〕×Ｘ〔M Ω〕＝300 〔Ｖ〕 ∴ Ｘ ＝ 3×106〔M Ω〕 これは相対湿度 40 % 程度の雰囲気に相当するが、これ
以下の湿度においては導電性が不足することになる。そ
のため、紙の片面に所望の導電処理を施してこれをカバ
ーする必要がある。このような導電処理を施した紙製電
極は、従来の金属電極に比して以下のような特徴があ
る。10 -4 [μA] × X [M Ω] = 300 [V] ∴ X = 3 × 10 6 [M Ω] This corresponds to an atmosphere with a relative humidity of 40%, but at a humidity below this, conductivity Will run out. Therefore, it is necessary to perform a desired conductive treatment on one side of the paper to cover it. The paper electrode that has been subjected to such a conductive treatment has the following features as compared with the conventional metal electrode.
１）廉価であり使用後使い捨てができる。特に焼却も可
能である。1) It is inexpensive and can be thrown away after use. In particular, incineration is possible.
２）片面のみ導電処理を施すことによって、所望の電界
形成が可能であり、電極間隔を狭小としまたは集塵効果
を高めることができる。2) A desired electric field can be formed by conducting the conductive treatment on only one side, and the electrode interval can be narrowed or the dust collection effect can be enhanced.
３）導電処理面と非導電処理面とを対向させることによ
り、十分な集塵効率を維持しながらコロナ放電または火
花放電を阻止することができる。3) By facing the conductive treated surface and the non-conductive treated surface, corona discharge or spark discharge can be prevented while maintaining sufficient dust collection efficiency.
４）上記２）および３）から印加電圧を高め、強い電界
を形成することができる。したがって、集塵電極の小型
化が達せられる。4) From the above 2) and 3), the applied voltage can be increased and a strong electric field can be formed. Therefore, miniaturization of the dust collecting electrode can be achieved.
かかる性質を利用した紙製電極による電気集塵装置は、
廉価かつ小型化され、さらに保守が容易であることか
ら、オフィス、商店、遊戯場、一般家庭等にも十分に普
及し得るものである。このような用途においては、大型
の工業用集塵機とは異なり清掃・保守が容易に実施可能
であることが前提条件となる。したがって集塵電極が筐
体部から極めて容易に着脱でき、さらに清掃・保守が簡
便に行い得ることが望ましい。殊に、紙製電極は、集塵
限界に達した際に使い捨てにされることが多いので、原
材料費ならびに組立・製造価格も低廉であることが要求
される。これら諸条件を全て具備する集塵装置用の紙製
集塵電極の構造は従来得られていなかった。An electrostatic precipitator using a paper electrode that utilizes such properties,
Since it is inexpensive, downsized, and easy to maintain, it can be widely used in offices, shops, amusement parks, ordinary households and the like. In such an application, it is a prerequisite that cleaning and maintenance can be easily performed unlike a large-sized industrial dust collector. Therefore, it is desirable that the dust collecting electrode can be attached / detached to / from the housing portion very easily, and that cleaning / maintenance can be easily performed. In particular, since the paper electrode is often thrown away when the dust collection limit is reached, it is required that the raw material cost as well as the assembling / manufacturing cost be low. A structure of a paper dust collecting electrode for a dust collecting device satisfying all of these conditions has not been obtained hitherto.
本発明の目的は、上記要請を満足する電気集塵装置に使
用される紙製集塵電極の構造を提供することである。An object of the present invention is to provide a structure of a paper-made dust collecting electrode used in an electrostatic precipitator that satisfies the above-mentioned requirements.
この目的は、特許請求の範囲に記載の構成を有する紙製
集塵電極、すなわち、通過微粒子に荷電させるための電
圧と異なる極性の電圧が付与される複数の集塵電極と、
該集塵電極と狭小間隙をもって交互に配設される反対極
性の電圧が付与される反発電極と、がそれぞれ紙製であ
り、該両電極のそれぞれに茄子型の組立孔が反対向きに
形成され、前記両電極は、同一極性同士の電極の前記組
立孔の縮小部と係合する固定片であって、かつ他極性電
極の前記組立孔の拡大部を非接触状態で貫通する複数の
固定片によって固定される、紙製集塵電極の構造によっ
て達成される。This object is a paper-made dust collecting electrode having the structure described in the claims, that is, a plurality of dust collecting electrodes to which a voltage having a polarity different from the voltage for charging the passing particles is applied,
The dust collecting electrodes and the repulsive electrodes to which a voltage of opposite polarity is applied, which are alternately arranged with a narrow gap, are made of paper, and eggplant-shaped assembly holes are formed in opposite directions in the respective electrodes. , The both electrodes are fixing pieces that engage with reduced portions of the assembly holes of electrodes of the same polarity, and a plurality of fixing pieces that penetrate the enlarged portions of the assembly holes of the other polarity electrodes in a non-contact state. This is achieved by the structure of the paper dust collecting electrode fixed by.
本発明にかかる紙製集塵電極によれば、集塵および反発
両電極板はいずれも同一形状に形成された紙製であっ
て、単に反対向きとして狭小間隙をもって配列し、一方
の極の電極の固定孔の拡大部を非接触で貫通し、他極電
極の固定孔と係合する固定片によってきわめて容易に組
立てることができる。したがって、電極板の型抜き工程
は１種類でよく、組立工程をも簡素化することができ
る。かかる紙製電極の構造によれば、低廉な電極組立体
であって、使い捨て可能な集塵電極組立体が得られる。According to the paper-made dust collecting electrode of the present invention, both the dust collecting and repulsion electrode plates are made of paper having the same shape, and the electrodes of one pole are simply arranged in opposite directions with a narrow gap. It is possible to assemble very easily by the fixing piece that penetrates the enlarged portion of the fixing hole of (1) without contact and engages with the fixing hole of the other electrode. Therefore, only one type of die cutting process is required for the electrode plate, and the assembling process can be simplified. According to the structure of such a paper electrode, it is possible to obtain a disposable dust collecting electrode assembly which is an inexpensive electrode assembly.
以下、実施例を示す添付図を参照して本発明を開示す
る。Hereinafter, the present invention will be disclosed with reference to the accompanying drawings illustrating examples.
第１図は、本発明にかかる紙製集塵電極の電極板１０の
実施例の平面図である。素材は、狭小間隙で対向させた
際に接触しない程度の硬さを有する板紙が使用される。
この板紙は難燃紙または難燃処理が施されていると都合
がよい。FIG. 1 is a plan view of an embodiment of an electrode plate 10 of a paper dust collecting electrode according to the present invention. As the material, a paperboard having a hardness that does not come into contact with each other when they are opposed to each other in a narrow gap is used.
The paperboard is conveniently flame retardant paper or treated with flame retardant treatment.
この電極板１０には、所要数の固定孔１２が形成され
る。この固定孔は、拡大部１２ａと縮小部１２ｂとから
構成される茄子型に形成される。この固定孔に対して、
右側にも同様の固定孔１２′が配設される。この位置関
係は、電極板１０を反対にして重合わせた際に、固定孔
１２の拡大部１２ａと固定孔１２′の縮小部１２′ｂ、
そして固定孔１２の縮小部１２ｂと固定孔１２′の拡大
部１２′ａとが、それぞれ重なり合うように形成され
る。その他の固定孔も同様の関係となるように形成され
る。A fixed number of fixing holes 12 are formed in the electrode plate 10. The fixing hole is formed in an eggplant shape including an enlarged portion 12a and a reduced portion 12b. For this fixing hole,
A similar fixing hole 12 'is also provided on the right side. This positional relationship is such that when the electrode plates 10 are reversed and overlapped with each other, the enlarged portion 12a of the fixed hole 12 and the reduced portion 12'b of the fixed hole 12 ',
The reduced portion 12b of the fixed hole 12 and the enlarged portion 12'a of the fixed hole 12 'are formed so as to overlap each other. The other fixing holes are also formed to have the same relationship.
また、電極板１０の一方側には、集塵用高電圧を印加す
るための給電片１４が形成される。この給電片１４から
右方にかけての適宜部分には、前述のような紙自体の固
有抵抗の変動、殊に低湿度時の固有抵抗増加を緩和する
ための、斜線部１６のような導電化表面処理が施され
る。このような導電化表面処理は、固定孔１２、１２′
をはじめ構造上・組立上の便宜等を考慮して任意位置に
任意形状で形成することができる。Further, on one side of the electrode plate 10, a power feeding piece 14 for applying a high voltage for dust collection is formed. A conductive surface such as a shaded portion 16 is provided at an appropriate portion from the power feeding piece 14 to the right side in order to mitigate the above-mentioned fluctuation of the specific resistance of the paper itself, especially the increase of the specific resistance at low humidity. Processing is performed. Such conductive surface treatment is applied to the fixing holes 12, 12 '.
In addition, it can be formed in an arbitrary shape at an arbitrary position in consideration of convenience in structure and assembly.
第２図は、第１図のように形成された単一の電極板１０
を集塵電極と反発電極とを交互に配列して組立てる際
の、固定片２０の例を示す。素材はポリエステルその他
適宜材質の絶縁性プラスチックフィルムであると都合が
よい。FIG. 2 shows a single electrode plate 10 formed as shown in FIG.
An example of the fixing piece 20 when the dust collecting electrode and the repulsion electrode are alternately arranged and assembled is shown. The material is conveniently an insulating plastic film of polyester or other suitable material.
この固定片２０は、第１図の固定孔１２の拡大部１２ａ
との縮小部１２ｂとの間をつなぐスリットを使用して挿
入されるから、部分２０ａの全幅Ｄは、固定孔１２の長
手方向寸法以下とされる。また、固定片２０の細くなっ
ている接続部２０ｂの幅ｄは、固定孔の縮小部１２ｂの
部分に適合する寸法に形成される。さらに、接続部２０
ｂ両側には、寸法Ｌのひれ状部２０ｃが、集塵電極と反
発電極との間の間隙を維持するために、配設される。な
お、接続部２０ｂは、電極を構成する板紙の厚さよりも
やや大きい寸法に形成される。This fixed piece 20 is an enlarged portion 12a of the fixed hole 12 of FIG.
Since it is inserted using a slit connecting between the reduced portion 12b and the reduced portion 12b, the total width D of the portion 20a is set to be equal to or smaller than the dimension of the fixing hole 12 in the longitudinal direction. In addition, the width d of the thin connecting portion 20b of the fixing piece 20 is formed to have a size suitable for the reduced portion 12b of the fixing hole. Furthermore, the connecting portion 20
Fins 20c having a dimension L are provided on both sides of b in order to maintain a gap between the dust collecting electrode and the repulsion electrode. The connecting portion 20b is formed to have a size slightly larger than the thickness of the paper board forming the electrode.
第３図は、第１図の電極板１０を第２図の固定片２０に
よって組み立てた電極構造の斜視図である。これら電極
の寸法や枚数は、用途や容量等によって適宜選定される
べきである。またこのように構成される電極は、両端が
集塵電極となるように構成される。正コロナによって微
粒子に荷電を行う場合は、負電圧が印加される。この場
合に端部に適する電極形状を採用することもあるが、本
図では省略している。なお、破断部分から明らかなよう
に、給電片１４から電極表面の一部にかけて施された導
電化処理部分１６は、同一方向となるように配列され
る。したがって、１枚目が紙面上にあれば、２枚目以降
の導電化処理部分１６′も同一面に配向される。組立て
にあたっては、前述のように１本目の固定片２０を固定
孔１２内を挿通させた後、一方の電極の縮小部１２ｂ部
分において９０度回転させることによって行われる。つ
いで全体が上下反対に並べられている他方の電極の縮小
部１２′ｂ部分において２本目の固定片を９０度回転し
て再び固定を行う。前後の両端部には、例えば第４図に
示すような両端用電極板１８が配設され、この拡大部分
を持たない固定孔１３に固定片２０の一部を係合させる
ことによって電極組立体３０が構成される。FIG. 3 is a perspective view of an electrode structure in which the electrode plate 10 of FIG. 1 is assembled with the fixing piece 20 of FIG. The size and the number of these electrodes should be appropriately selected depending on the application, capacity and the like. In addition, the electrode configured in this manner is configured so that both ends serve as dust collecting electrodes. When the particles are charged by the positive corona, a negative voltage is applied. In this case, an electrode shape suitable for the end may be adopted, but it is omitted in this figure. As is clear from the broken portion, the conductive treatment portions 16 applied from the power feeding piece 14 to a part of the electrode surface are arranged in the same direction. Therefore, if the first sheet is on the surface of the paper, the second and subsequent conductive treatment portions 16 'are also oriented on the same surface. The assembling is performed by inserting the first fixing piece 20 through the fixing hole 12 as described above and then rotating the reduced portion 12b of one of the electrodes by 90 degrees. Then, the second fixing piece is rotated by 90 degrees in the reduced portion 12'b of the other electrode, which is entirely arranged upside down, and is fixed again. Electrode plates 18 for both ends as shown in, for example, FIG. 4 are provided at both front and rear ends, and a part of a fixing piece 20 is engaged with a fixing hole 13 having no enlarged portion, thereby forming an electrode assembly. 30 are configured.
本実施例において示された紙製集塵電極組立体は、同一
構造の電極板１０をもって正負両電極を構成することが
できるため、打抜き工程や、導電化表面処理工程が簡単
になる利点がある。さらにごく簡単に形成可能な固定片
２０を用いて極めて容易に組み立てられる。したがっ
て、従来の金属または金属化された材料に比して元来低
廉な原材料費に加えて、製造・組み立て工数を減ずるこ
とができ、製造原価を低減することができる。The paper-made dust collecting electrode assembly shown in this embodiment has the advantage that the punching step and the conductive surface treatment step are simplified because both positive and negative electrodes can be formed by the electrode plate 10 having the same structure. . Furthermore, it is extremely easy to assemble using the fixing piece 20 which can be formed very easily. Therefore, in addition to the originally low raw material cost as compared with the conventional metal or metallized material, the number of manufacturing / assembling steps can be reduced and the manufacturing cost can be reduced.
かかる構成であれば、集塵量限界に達した電極は、使い
捨てが可能であり、殊に、使用済の電極を焼却すること
も可能である。かかる構成の集塵電極組立体によって、
紙製電極の特徴を十分に発揮することができる。With such a configuration, the electrode that has reached the dust collection amount limit can be disposable, and in particular, the used electrode can be incinerated. With the dust collecting electrode assembly having such a configuration,
The characteristics of the paper electrode can be fully exerted.
本発明を適当な実施例に即して説明したが本発明の範囲
内において多くの変形または変更が可能であることは明
らかであろう。While this invention has been described in terms of a suitable embodiment, it will be apparent that many variations and modifications are possible within the scope of this invention.
第１図は、本発明にかかる紙製集塵電極板の構造を示す
平面図である。 第２図は、集塵電極の組み立てに使用される固定片を示
す平面図である。 第３図は、紙製集塵電極組立体の構成を示す斜視図であ
る。 第４図は、端部固定用電極の例を示す平面図である。 図中の主な参照符号の対応は以下の通りである。 １０：紙製電極板、１２：固定孔 １３：固定孔、１４：給電片 １６：導電化表面処理、１８：端部電極板 ２０：固定片 ３０：集塵電極組立体FIG. 1 is a plan view showing the structure of a paper dust collecting electrode plate according to the present invention. FIG. 2 is a plan view showing a fixing piece used for assembling the dust collecting electrode. FIG. 3 is a perspective view showing the configuration of a paper dust collecting electrode assembly. FIG. 4 is a plan view showing an example of an end fixing electrode. Correspondence between the main reference symbols in the drawings is as follows. 10: Paper electrode plate, 12: Fixing hole 13: Fixing hole, 14: Power feeding piece 16: Conductive surface treatment, 18: End electrode plate 20: Fixing piece 30: Dust collecting electrode assembly
Claims (1)
おいて、 通過微粒子に荷電させるための電圧と異なる極性の電圧
が付与される複数の集塵電極と、該集塵電極と狭小間隙
をもって交互に配設される反対極性の電圧が付与される
反発電極と、がそれぞれ紙製であり、該両電極のそれぞ
れに茄子型の組立孔が反対向きに形成され、前記両電極
は、同一極性同士の電極の前記組立孔の縮小部と係合す
る固定片であって、かつ他極性電極の前記組立孔の拡大
部を非接触状態で貫通する複数の固定片によって固定さ
れることを特徴とする紙製集塵電極の構造。1. A paper dust collecting electrode used in an electrostatic dust collector, comprising a plurality of dust collecting electrodes to which a voltage having a polarity different from that of a voltage for charging passing particles is applied, and the dust collecting electrodes and narrow electrodes. The repulsion electrodes to which a voltage of opposite polarity is applied, which are alternately arranged with a gap, are made of paper, and eggplant-shaped assembly holes are formed in opposite directions in the respective electrodes, and the electrodes are It is a fixed piece that engages with a reduced portion of the assembly hole of electrodes of the same polarity, and is fixed by a plurality of fixed pieces that penetrate the enlarged portion of the assembly hole of another polarity electrode in a non-contact state. Characteristic paper dust collecting electrode structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6195185A JPH0636878B2 (en) | 1985-03-28 | 1985-03-28 | Structure of paper dust collecting electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6195185A JPH0636878B2 (en) | 1985-03-28 | 1985-03-28 | Structure of paper dust collecting electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61222556A JPS61222556A (en) | 1986-10-03 |
| JPH0636878B2 true JPH0636878B2 (en) | 1994-05-18 |
Family
ID=13186010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6195185A Expired - Lifetime JPH0636878B2 (en) | 1985-03-28 | 1985-03-28 | Structure of paper dust collecting electrode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0636878B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0322547U (en) * | 1989-07-14 | 1991-03-08 |
-
1985
- 1985-03-28 JP JP6195185A patent/JPH0636878B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61222556A (en) | 1986-10-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0730497B1 (en) | A precipitator for an electrostatic filter | |
| US5322550A (en) | Electrical dust collector | |
| US5466279A (en) | Electric dust collector system | |
| EP0314811A1 (en) | Dust collecting electrode | |
| JPH07108375B2 (en) | Electric dust collector | |
| JP7541364B2 (en) | Electrostatic Precipitator | |
| KR102723646B1 (en) | Eectric Dust device | |
| JPH0636878B2 (en) | Structure of paper dust collecting electrode | |
| JPH04135661A (en) | Electrostatic precipitator | |
| JPH04187252A (en) | Electrostatic precipitator | |
| JPH0231155Y2 (en) | ||
| JPS61227861A (en) | Structure of dust collecting electrode made of paper | |
| JPH0889844A (en) | Collector of air cleaner | |
| JP3618591B2 (en) | Electrostatic dust collector | |
| JPH07193Y2 (en) | Collector electrode plate | |
| JP3648679B2 (en) | Electric dust collector | |
| JP2865331B2 (en) | Air filter | |
| JPH0236611Y2 (en) | ||
| JP2018167189A (en) | Electric dust collector | |
| KR200156411Y1 (en) | Electrostatic precipitator | |
| JPH0231157Y2 (en) | ||
| JPS6344018B2 (en) | ||
| KR970020199A (en) | Electrostatic precipitating filter of air purifier | |
| JP2006281173A (en) | Electric dust filter | |
| KR20200105137A (en) | Dust collector of Air Cleaner and manufacturing method for the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |