JPH0685890B2 - Charge type filter - Google Patents
Charge type filterInfo
- Publication number
- JPH0685890B2 JPH0685890B2 JP18171486A JP18171486A JPH0685890B2 JP H0685890 B2 JPH0685890 B2 JP H0685890B2 JP 18171486 A JP18171486 A JP 18171486A JP 18171486 A JP18171486 A JP 18171486A JP H0685890 B2 JPH0685890 B2 JP H0685890B2
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- JP
- Japan
- Prior art keywords
- dust
- charge
- type filter
- present
- ground 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
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Description
【発明の詳細な説明】 本発明は、荷電式フィルターに関し、更に詳しくは、高
圧電極と接地電極間に荷電により電界を形成せしめ、塵
埃と材とを帯電することで静電及び/又は誘電作用に
より高性能な過性能を具備した、各種空気清浄分野に
利用することのできる荷電式フィルターに関する。Description: TECHNICAL FIELD The present invention relates to a charge type filter, and more specifically, it forms an electric field by charging between a high voltage electrode and a ground electrode, and charges dust and a material to produce an electrostatic and / or dielectric effect. Therefore, the present invention relates to a charge-type filter which has high performance and can be used in various air cleaning fields.
[従来の技術および問題点] 従来荷電することにより、塵埃を捕集する方式のフィル
ターと呼ばれるものには、高圧電極と接地電極間に形成
される電界中を塵埃を通過せしめることで塵埃を帯電化
し、接地電極で塵埃を捕集又は粗粒化して、接地電極で
捕集されない塵埃又は接地電極で捕集され更に再飛散す
る塵埃を機械的に捕集する例えば特開昭56-37060号に示
される方式のものと、前記塵埃帯電部に加えて、更に高
圧電極と接地電極間に誘電材料からなる材を設置して
電界を形成し、材を誘電化せしめて塵埃を機械的およ
び静電気的に捕集する例えば特開昭58-92471号等に示さ
れる方式のものとがあり、通常前者は材付き電気集塵
装置、後者は誘電フィルター装置として知られている。[Prior Art and Problems] Conventionally, a filter that collects dust by charging it is charged by passing the dust through an electric field formed between a high voltage electrode and a ground electrode. To collect or coarsen the dust with the ground electrode and mechanically collect the dust that is not collected with the ground electrode or the dust that is collected with the ground electrode and re-scattered, for example, in Japanese Patent Laid-Open No. 56-37060. In addition to the above-mentioned system and the dust electrification part, a material made of a dielectric material is further installed between the high voltage electrode and the ground electrode to form an electric field, and the material is dielectricized to remove the dust mechanically and electrostatically. For example, the method described in JP-A-58-92471 is known. The former is generally known as an electrostatic precipitator with material, and the latter is known as a dielectric filter device.
前者の方式によるものは、塵埃の捕集効率に劣り、又、
頻繁に接地電極の掃除や材交換を行う必要がありメン
テナンス性に劣るという欠点があり、又、後者の方式に
よるものは、前者に比べて捕集効率には優れるものの、
高効率で塵埃が捕集されるために材の目詰りが激し
く、捕集容量が少なく材寿命が短いという欠点があっ
た。The former method is inferior in dust collection efficiency, and
There is a drawback that it is necessary to frequently clean the ground electrode and replace the material, which is inferior in maintainability, and the latter method is superior in collection efficiency to the former,
Since the dust is highly efficiently collected, the material is significantly clogged, and the collection capacity is small and the material life is short.
又、これらの従来のものは何れも材とは別に独立した
電極として金属製の線や網等を用いるため、材との密
着性やひだ折り等の加工性に劣り、その結果、所望の集
塵効果が得られないという欠点があり、材の交換等に
も電極をその都度取り外したりすることが必要で、作業
性やメンテナンス等に劣るものであった。Further, since all of these conventional ones use a metal wire or net as an electrode independent of the material, they are inferior in adhesion to the material and workability such as folds, and as a result, desired collection There is a drawback that the dust effect cannot be obtained, and it is necessary to remove the electrode each time to replace the material, and the workability and maintenance are inferior.
[問題を解決するための手段] 本発明は、材の表裏の非対象の位置には幅が5mm以下
の線状の導電部を形成し、気流の流入側に配した導電部
を接地電極、流出側に配した導電部を高圧電極とし、か
つ該材を線状又は帯状の導電部と襞折り線とが交差す
るように襞折り加工し、該材の上流に塵埃帯電部を設
けないことを特徴とする電極と不織布が一体構造の荷電
式フィルターに関する。[Means for Solving the Problem] The present invention is to form a linear conductive part having a width of 5 mm or less at a non-symmetrical position on the front and back sides of a material, and to arrange the conductive part arranged on the inflow side of the airflow into a ground electrode, Do not fold the conductive part placed on the outflow side as a high-voltage electrode, and fold the material so that the linear or strip-shaped conductive part and the fold line intersect, and do not provide a dust charging part upstream of the material. The present invention relates to a charge-type filter having an integrated structure of an electrode and a non-woven fabric.
[作用及び実施例] 本発明は、荷電式フィルターとして、材の表裏の非対
象の位置に幅が5mm以下の線状の導電部を形成したもの
を利用するという極めて簡単な構成であり、以下、本発
明を図面を参照して説明を行うと、第1図a),b)は、
本発明の荷電式フィルター基材の導電部の例を示す平面
図で、c),d)は各々a),b)の断面図である。[Operations and Examples] The present invention has an extremely simple configuration in which a linear conductive portion having a width of 5 mm or less is formed at asymmetrical positions on the front and back sides of a material as a charge-type filter. The present invention will be described with reference to the drawings.
It is a top view which shows the example of the electrically conductive part of the charge type filter base material of this invention, and c) and d) are sectional drawings of a) and b), respectively.
第2図は、本発明による荷電式フィルターの使用状態を
表わす説明図である。FIG. 2 is an explanatory view showing a usage state of the charge-type filter according to the present invention.
まず、本発明で利用する材1について説明すると、
材1は、周知の空調用材が全て使用可能である。これ
らの材1としては、紙製や不織布製あるいは無機繊維
製等の材料からなる材であって、粗塵用としての見掛
け密度の低いものから超高性能用としてのHEPAフィルタ
ーと呼ばれる高密度のものまで何でも利用することがで
きるが、本発明においては高電圧を使用するため絶縁性
のある材料を用いる必要がある。又、非常時に備えて
材を難燃化することも好適である。First, the material 1 used in the present invention will be described.
As the material 1, all known air conditioning materials can be used. These materials 1 are materials made of materials such as paper, non-woven fabric, or inorganic fiber, and have a low apparent density for coarse dust to a high density called HEPA filter for ultra-high performance. Anything can be used, but since a high voltage is used in the present invention, it is necessary to use an insulating material. It is also preferable to make the material flame-retardant in case of an emergency.
特に、ポリエステル、ポリプロピレン等の合成繊維を少
なくとも50%以上含む不織布は、荷電時に誘導フィルタ
ーとなるため、塵埃の捕集効率も高くなり最適のものと
考えられる。In particular, a non-woven fabric containing at least 50% or more of synthetic fibers such as polyester and polypropylene serves as an induction filter at the time of charging, and is therefore considered to be the most suitable because it has a high dust collection efficiency.
又、材に密度勾配を設けたり、襞折り形状を変化させ
たりすることも、本発明において全て従来通り有効に利
用することができる。Further, providing the material with a density gradient or changing the fold shape can also be effectively utilized in the present invention in the conventional manner.
次に導電部2について説明すると、導電部2は高圧の電
荷に耐えられるものであれば任意に選択することができ
るが、気流の通過を妨げない構造が望ましく、このた
め、導電部は5mm以下の幅の線状体であることが適当
で、幅が5mmを越えるような場合は過面積を減少せし
めて圧力損失の増加や塵埃保持容量の低下が生じ、又、
電界形成にも劣るので好ましくない。Next, the conductive part 2 will be described. The conductive part 2 can be arbitrarily selected as long as it can withstand high-voltage electric charges, but a structure that does not prevent the passage of airflow is desirable. It is appropriate to use a linear body with a width of 5 mm, and when the width exceeds 5 mm, the excess area is reduced to increase pressure loss and decrease the dust holding capacity.
It is not preferable because it is also inferior in electric field formation.
又、本発明では導電部2は材の表裏に非対象であるこ
とが必須とするため、一般的には、比抵抗が104Ω・cm
以下、好適には100Ω・cm以下の金属線や炭素繊維等の
導電性線状体、あるいは、銀、銅、アルミニウムやカー
ボン等の導電性粉体を接抵抗が106Ω・cm以下のペース
トを線状に塗布したものが好適であり、金網やメッシュ
等の通気性板状体等の、両面体は非対象構造が得られな
いので不適当である。Further, in the present invention, it is indispensable that the conductive part 2 is asymmetric on the front and back of the material. Therefore, in general, the specific resistance is 10 4 Ω · cm.
Hereinafter, preferably 10 0 Ω · cm or less of the metal wire and the conductive linear material such as carbon fiber, or silver, copper, contacting the electrically conductive powder such as aluminum or carbon resistor is 10 6 Ω · cm or less It is preferable to apply the paste of (1) in a linear shape, and a double-sided body such as a breathable plate-like body such as a wire mesh or a mesh is not suitable because an asymmetric structure cannot be obtained.
尚、本発明で言う非対象とは、材表面に対して垂直に
透視した場合に、表面の導電部と裏面の導電部とが重積
しない状態のことを言う。The term “non-target” used in the present invention means a state in which the conductive portion on the front surface and the conductive portion on the back surface do not overlap with each other when viewed perpendicularly to the material surface.
本発明において、表裏の導電部が非対象構造であること
を必須要件とする理由を述べると、第1には導電部2を
材を介して表裏非対象に設けることで、高圧電極2Bと
接地電極2Aとの電極間距離を大きく取ることができ、こ
のため、電界形成域を拡大して均一な塵埃捕集作用が得
られると共に、電極間の短絡を防止する作用があるため
で、第2には、対象構造の場合には、塵埃が接地電極2A
に集中して材の目詰りが早期に発生したり、あるい
は、接地電極2Aが塵埃が覆って電界形成を阻害して塵埃
捕集効率を低下せしめるが、非対象構造とすることでこ
れらの障害を防止して塵埃捕集効率を高め、しかも、
材全体を活用できるので塵埃保持容量を増大せしめるこ
とができるためである。In the present invention, the reason why the conductive parts on the front and back sides have an asymmetrical structure is essential. First, the conductive part 2 is provided on the front and back non-symmetrical parts through a material, so that the high voltage electrode 2B and the ground are connected. The distance between the electrodes and the electrode 2A can be made large, and therefore, the electric field forming region can be expanded to obtain a uniform dust collecting action and also have the action of preventing a short circuit between the electrodes. In the case of the target structure, dust is grounded to the ground electrode 2A.
If the ground electrode 2A covers the dust with the ground electrode 2A to prevent the electric field from being formed and the dust collection efficiency is reduced, the non-target structure will reduce these obstacles. To improve the dust collection efficiency and
This is because the entire material can be utilized and the dust holding capacity can be increased.
高圧電極2Bと接地電極2Aの電極間距離は、短絡を防止し
て、且つ、良好な電界形成を得るためには、2乃至50mm
が適当と考えられ、又、電極間電位差に関しては、0.2
乃至1.0kv/mm(電極間距離)、好適には0.5乃至0.9kv/m
mであることが望ましい。The distance between the high-voltage electrode 2B and the ground electrode 2A is 2 to 50 mm in order to prevent a short circuit and obtain a good electric field.
Is considered appropriate, and the potential difference between the electrodes is 0.2
To 1.0 kv / mm (distance between electrodes), preferably 0.5 to 0.9 kv / m
Desirably m.
以下、第2図に基づいて、材表裏に形成された導電部
について、気流流入側を接地電極、流出側を高圧電極と
する理由を説明する。なお、第2図の荷電式フィルター
は、材を線状の導電部と襞折り線とが交差するように
襞折り加工したものである。Hereinafter, the reason why the airflow inflow side is the ground electrode and the outflow side is the high voltage electrode in the conductive portions formed on the front and back surfaces of the material will be described with reference to FIG. The charge-type filter shown in FIG. 2 is formed by folding a material such that the linear conductive portion and the fold line intersect each other.
従来の荷電式フィルターは、一般的に線状の高圧電極と
板状の接地電極からなる塵埃に対するイオン化部を設け
て、本発明の配置とは反対に気流の流入側に材と間隔
を設けて高圧電極を配して塵埃をまず帯電し、更に接地
電極を気流の流出側に設けた材により帯電した塵埃を
捕集する構成であったため、これらは前述したように、
捕集効率及び/又は保持容量が劣り、且つ、寿命が短い
という欠点があったが、本発明者はこれらの問題を解決
するために鋭意研究を重ねた結果、塵埃捕集効率に劣る
という理由で従来は利用されなかった接地電極を気流流
入側に配した構造において、材と電極とを一体構造に
した場合は塵埃の捕集効率が従来より更に高く、しか
も、塵埃保持容量が格段に優れた荷電式フィルターが得
られることを見出し、本発明を完成したものである。The conventional charge type filter is generally provided with an ionization part for dust which is composed of a linear high voltage electrode and a plate-shaped ground electrode, and is provided with a material and a space on the inflow side of the air flow contrary to the arrangement of the present invention. The high-voltage electrode is arranged to charge the dust first, and the ground electrode is provided on the outflow side of the airflow to collect the charged dust.
Although there are drawbacks that the collection efficiency and / or the retention capacity are poor and the life is short, the present inventor has conducted diligent research to solve these problems, and as a result, the dust collection efficiency is poor. In a structure in which the ground electrode, which was not used in the past, is placed on the air flow inflow side, the dust collection efficiency is even higher than before and the dust holding capacity is much better when the material and electrode are integrated. The present invention has been completed by finding out that a charged filter having the above characteristics can be obtained.
本発明の荷電式フィルターが塵埃の保持容量が従来の物
よりも格段に優れる理由を述べると、前記したように、
本発明の荷電式フィルターにおいて、塵埃を含む気流
は、材中を接地電極側表面から高圧電極側へ流れ、こ
れとは反対に、電界は高圧電極2Bから接地電極2Aへ向け
て形成される。接地電極を通過した塵埃は材内で帯電
され、気流の流れと反対の接地電極への電気的吸引力を
受ける。このため、材に達した塵埃は、材の有する
通気抵抗と電界の影響及び/又は材の誘電作用により
減速されるので、まず材表面に堆積する。この時、塵
埃は全て同じ極性に帯電しているため、塵埃どうしが緻
密に凝集することがなく、あたかも起毛した様な状態で
捕集されるため、塵埃が材表面を覆っても材の目詰
まりが生じることはない。又、帯電により塵埃が材か
ら遊離しようとする力は、気流の流速よりも明らかに小
さいため、塵埃が材表面から遊離することはない。し
かも、本発明では表裏の電極が非対象に設置されている
ため、高圧電極から接地電極へと向かう方向は、気流の
方向と真に対向するのではなく斜交するので電界の分布
が材の水平方向にも広がり、且つ、各電極が対向した
場合のように特定領域ではない不平等電界を形成するの
で、このことも塵埃保持容量の向上に有利と考えられ
る。The reason why the charge-type filter of the present invention has a much better dust holding capacity than the conventional ones, as described above,
In the charged filter of the present invention, the air flow containing dust flows from the surface of the ground electrode side to the high voltage electrode side in the material, and conversely, an electric field is formed from the high voltage electrode 2B to the ground electrode 2A. The dust that has passed through the ground electrode is charged in the material and receives an electric attraction force to the ground electrode, which is opposite to the flow of the air flow. Therefore, the dust that reaches the material is decelerated by the influence of the ventilation resistance and electric field of the material and / or the dielectric action of the material, so that it is first deposited on the surface of the material. At this time, all the dust is charged to the same polarity, so the dust does not aggregate densely and is collected as if it were raised, so even if the dust covers the surface of the material, No clogging will occur. Further, since the force of the dust to be released from the material due to the electrification is obviously smaller than the flow velocity of the air flow, the dust is not released from the surface of the material. In addition, in the present invention, since the front and back electrodes are asymmetrically installed, the direction from the high-voltage electrode to the ground electrode does not directly face the direction of the air flow but intersects obliquely, so that the distribution of the electric field is different. Since this also spreads in the horizontal direction and forms an unequal electric field that is not in a specific region as in the case where the electrodes face each other, this is also considered to be advantageous for improving the dust holding capacity.
この結果、材の表面より内部へと塵埃が暫時保持され
て行くが、全ての塵埃が電界の作用により緻密に凝集す
ることがないので、目詰りが生じ難く、圧力損失の上昇
が従来の荷電式フィルターに比べ格段に少ない。As a result, dust is retained from the surface of the material to the inside for a while, but since all dust does not aggregate densely due to the action of the electric field, clogging is less likely to occur, and pressure loss is increased by the conventional charging method. It is much less than the expression filter.
これらの作用は、気流の流入側に接地電極を、気流の流
出側に高圧電極を設けることにより、はじめて達成でき
るものである。These actions can be achieved only by providing the ground electrode on the inflow side of the air flow and the high-voltage electrode on the outflow side of the air flow.
又、本発明においては、従来の電気集塵装置のようにイ
オン化部を全く必要としないため、材交換や、メンテ
ナンス等の作業性にも非常に優れ、集塵作用としての塵
埃の帯電を利用するのではなく、材の機械的捕集作用
を塵埃捕集の主たる作用とし、更に捕集された塵埃を気
流の流れと逆方向へ起毛させる、つまり、静電植毛に類
似した作用により目詰まりを防ぎ、且つ、電界形式と
材の誘電作用により塵埃の通過速度を低減することによ
り、従来に比べ少なくとも30%以上の高い塵埃保持容量
を有する荷電式フィルターが得られる。Further, in the present invention, unlike the conventional electrostatic precipitator, since no ionization part is required, workability such as material replacement and maintenance is very excellent, and the electrostatic charge of dust is used as a dust collecting function. Instead, the mechanical collection action of the material is the main action of dust collection, and the collected dust is raised in the direction opposite to the flow of the air flow, that is, clogging by the action similar to electrostatic flocking. By reducing the dust passing speed by the electric field type and the dielectric action of the material, a charged filter having a high dust holding capacity of at least 30% or more compared with the conventional one can be obtained.
上記の理由により、本発明の電極の配置を採用すること
で従来のものよりも遥かに大きな塵埃保持容量の荷電式
フィルターが得られるのである。For the above reasons, the use of the electrode arrangement of the present invention makes it possible to obtain a charged filter having a much larger dust holding capacity than the conventional one.
次に捕集効率に関して説明すると、一般的に捕集効率
は、フィルターの密度が高いほど、また、材を通過す
る気流速度が遅いほど良好となる。Next, the collection efficiency will be described. Generally, the collection efficiency becomes better as the density of the filter is higher and the air velocity passing through the material is slower.
このため、本発明の構成を採用した材は従来の荷電フ
ィルターに比べて、同一密度であれば電界形成により気
流の流速よりも塵埃の流速を低下せしめることができる
ので、実質的に風速を低下せしめた場合と同様の塵埃捕
集効率の向上が得られ、又、同一の風速であれば、本発
明のものは材の目詰まりが従来のものよりも格段に低
いため圧力損失の上昇を招かず、より高密度の材を利
用することが可能になるため、何れにしても捕集効率を
高める結果が得られる。For this reason, the material adopting the configuration of the present invention can reduce the flow velocity of dust more than the flow velocity of the air flow due to the electric field formation at the same density as compared with the conventional charge filter, so that the wind velocity is substantially reduced. The same improvement in dust collection efficiency as in the case of squeezing is obtained, and if the wind speed is the same, the clogging of the material of the present invention is significantly lower than that of the conventional one, which causes an increase in pressure loss. Instead, it is possible to use a higher density material, so that in any case, the collection efficiency can be improved.
更に、接地電極を気流流入側に配することの有利な点
は、帯電された塵埃粒子の過剰な蓄積は、塵埃間の反発
作用による塵埃の遊離や捕集効率の低下を生じる場合が
あるが、本発明のものは接地電極により常にアースされ
ているので、電荷の蓄積によるこれらの障害は発生しな
い。Further, an advantage of arranging the ground electrode on the air flow inflow side is that excessive accumulation of charged dust particles may cause dust release due to a repulsive action between dust particles and a reduction in collection efficiency. Since the present invention is always grounded by the ground electrode, these obstacles due to charge accumulation do not occur.
以下、本発明の電荷式フィルターを実施例により更に具
体的に説明するが、本発明はこれらの実施例に限定され
るものではない。Hereinafter, the charge type filter of the present invention will be described more specifically by way of examples, but the present invention is not limited to these examples.
〔実施例1〕 材として、難燃性ポリエステル系繊維100%(1.5デニ
ール,44mm長と3デニール,51mm長)からなる目付150g/m
2、厚み3mmのウエブをポリ塩化ビニル系の接着剤で結合
した不織布を使用し、この表面に比抵抗1.8Ω・cmの炭
素繊維のマルチフィラメントを線間隔12mmの平行線にな
るように接着剤で設置し、次いで、第1図a)に示すよ
うに材裏面に表面とは非対象の位置に表面と同一間隔
に同一の炭素繊維マルチフィラメントを設置して導電部
を形成し、本発明による荷電式フィルター基材を得た。[Example 1] As a material, a basis weight of 100% of flame-retardant polyester fiber (1.5 denier, 44 mm long and 3 denier, 51 mm long) 150 g / m
2, using a combined web having a thickness of 3mm with an adhesive of a polyvinyl chloride-based nonwoven, adhesive in parallel lines of the line spacing 12mm multifilament carbon fibers having a specific resistance 1.8Ω · cm to this surface Then, as shown in FIG. 1 a), the same carbon fiber multifilament is installed on the back surface of the material at a position not symmetrical to the front surface at the same interval as the front surface to form a conductive part. A charged filter substrate was obtained.
この基材を襞折りして、電極間の平均電位差が0.8kv/mm
の条件で荷電し、JIS D-1612の試験方法に準じて試験を
行い、圧力損失が100mmAqになった時を最終として塵埃
保持容量、及び、塵埃捕集効率について測定した。This base material is folded and the average potential difference between the electrodes is 0.8 kv / mm.
Was charged under the conditions described above and tested according to the test method of JIS D-1612, and when the pressure loss reached 100 mmAq, the dust retention capacity and the dust collection efficiency were measured.
第1表からも明らかなように、本発明の荷電式フィルタ
ーは、比較例のものより遥かに塵埃保持容量及び捕集効
率に優れ、且つ、極めて良好な塵埃捕集作用を有するも
のであり、内燃機関用のエアークリーナーとして最適の
ものであった。As is clear from Table 1, the charge-type filter of the present invention is far superior in dust holding capacity and collection efficiency to those of the comparative example, and has an extremely good dust collecting action. It was the most suitable as an air cleaner for internal combustion engines.
〔比較例1〕 実施例1との比較のため、材としては実施例1と同一
の不織布を使用し、炭素繊維からなる導電部の代りに高
圧電極及び接地電極として金網を材形状に従い襞折り
したものを作成し過層と重ね合わせて、実施例1と同
一条件で試験を行なった。[Comparative Example 1] For comparison with Example 1, the same non-woven fabric as in Example 1 was used as a material, and a wire mesh was used as a high voltage electrode and a ground electrode instead of the conductive portion made of carbon fiber according to the material shape. Then, a test piece was prepared, superposed on the overlayer, and tested under the same conditions as in Example 1.
これらの結果を第1表に示したが、実施例のものと比べ
て、塵埃の保持容量、捕集効率とも劣るもので、又、目
詰まりも生じ易く極めて寿命の短いものであった。The results are shown in Table 1. The dust retention capacity and the collection efficiency are inferior to those of the examples, and the clogging is apt to occur, and the life is extremely short.
〔実施例2〕 材として、平均繊維径が2μで、目付60g/m2、厚み0.
5mmのポリオレフィン系のメルトブロー法による不織布
と、平均デニールが2デニールのポリクラール繊維及び
モダクリル繊維からなる目付120g/m2,厚み1.1mmの乾式
法による不織布とを積層したものを用いて、このものの
表裏非対象の位置に、乾燥固化後の比抵抗が102Ω・cm
の導電性塗料を幅2mm,線間隔16mmの平行線状に塗布して
導電部を形成し、本発明による荷電式フィルターを得
た。 [Example 2] As a material, the average fiber diameter was 2μ, the basis weight was 60 g / m 2 , and the thickness was 0.
Using a 5mm polyolefin meltblown non-woven fabric laminated with a dry process non-woven fabric with an average denier of 2 denier made of polyclar fiber and modacrylic fiber having a basis weight of 120g / m 2 and 1.1mm thickness The specific resistance after drying and solidification is 10 2 Ω · cm at the non-target position.
The conductive coating material was applied in parallel lines having a width of 2 mm and a line interval of 16 mm to form conductive parts, and a charge-type filter according to the present invention was obtained.
このものについても、襞折り加工を行い、ASHR-AE 52-7
6に準じて比色法で試験を行い、その結果を第2表に示
したが、極めて微細な塵埃に対しても、優秀な捕集効率
を示し、且つ圧力損失が低いものであり、高性能フィル
ターとして有用なものであった。This product is also fold-processed and the ASHR-AE 52-7
The colorimetric test was conducted according to 6 and the results are shown in Table 2. It shows excellent collection efficiency even for extremely fine dust and has a low pressure loss, It was useful as a performance filter.
〔比較例2〕 実施例2で使用したものと同一の材を予め高圧の電荷
をチャージすることでエレクトレット化し、次いで、こ
のものを襞折りして、エレクトレットフィルターとして
実施例2のものとの比較を行った。[Comparative Example 2] The same material as that used in Example 2 was made into an electret by previously charging it with a high voltage, and then this was folded to compare it with that of Example 2 as an electret filter. I went.
この結果も第2表に示すが、実施例2のものに比べて、
塵埃の捕集効率は同等であるが、保持容量は格段劣るも
のであった。The results are also shown in Table 2, and compared with those in Example 2,
The dust collection efficiency was the same, but the storage capacity was much worse.
[発明の効果] 本発明にる荷電式フィルターは、従来から利用されてい
る材をそのまま利用できるため、特別な材料や設備等
を全く必要としない。又、本発明で必須の構成である
材表裏の非対象位置に形成される導電部となる金属線等
の導電性線状体、あるいは、銀、カーボン等の導電性粉
体を接着剤等に分散せしめたペーストも安価且つ容易に
入手することが可能であり、積層作業にも困難な点は全
くない。 [Advantages of the Invention] The charge filter according to the present invention does not require any special material, equipment, or the like, since the materials that have been conventionally used can be used as they are. In addition, a conductive linear body such as a metal wire or a conductive powder such as silver or carbon, which becomes a conductive portion formed at asymmetrical positions on the front and back of the material, which is an essential component of the present invention, is used as an adhesive or the like. The dispersed paste can be obtained at low cost and easily, and there is no difficulty in the laminating work.
そして、本発明の荷電式フィルターは、前記したように
塵埃の保持容量が従来のものよりも格段に優れている。
このことは、荷電式フィルターの交換回数を減らすばか
りでなく、従来程度の脱塵作業を行うことで極めて長期
の使用を可能とする。従って、荷電式フィルターの交換
にともなうメンテナンス及び経費を軽減し、非常に経済
性に優れたものである。And, as described above, the charge-type filter of the present invention is much superior in dust holding capacity to the conventional one.
This not only reduces the number of times that the charge-type filter needs to be replaced, but also enables extremely long-term use by performing dust removal work of a conventional level. Therefore, the maintenance and cost associated with the replacement of the charge type filter are reduced, and the cost is very excellent.
しかも、塵埃が起毛状態で捕集されるため、圧力損失の
上昇が従来のものよりも遥かに低く、その結果として、
内燃機関等のエアークリーナーとして利用すれば吸気効
率あるいは燃焼効率が高まるので燃費の向上や出力の向
上等にも寄与し、一般空気清浄分野においてはより高密
度の材や、より大量の気流の処理が可能となるので、
高性能且つコンパクトな構造の空気清浄装置を提供する
ことができる。Moreover, since the dust is collected in the raised state, the increase in pressure loss is much lower than the conventional one, and as a result,
When used as an air cleaner for an internal combustion engine, etc., intake efficiency or combustion efficiency is improved, which contributes to improved fuel efficiency and output. In the general air cleaning field, it is possible to process higher density materials and a larger amount of airflow. Is possible,
It is possible to provide an air purifier having a high performance and a compact structure.
従って、本発明の荷電式フィルターは本来の機能である
塵埃の捕集効率が良好であることは勿論、高い塵埃保持
容量と長寿命を具備、経済性、生産性に優れ、しかも、
利用範囲が広い理想的な荷電式フィルターである。Therefore, the charge-type filter of the present invention not only has a good dust collection efficiency, which is its original function, but also has a high dust holding capacity and a long service life, and is excellent in economic efficiency and productivity.
It is an ideal charge filter with a wide range of applications.
第1図a),b)は、本発明の荷電式フィルター基材の導
電部の例を示す平面図、c),d)は各々a),b)の断面
図である。 第2図は、本発明による荷電式フィルターの使用状態を
表わす説明図である。 図中の数字は、 1……材、2……導電部 2A……接地電極、2B……高圧電極1 (a) and 1 (b) are plan views showing examples of the conductive parts of the charge-type filter substrate of the present invention, and c) and d) are cross-sectional views of a) and b), respectively. FIG. 2 is an explanatory view showing a usage state of the charge-type filter according to the present invention. The numbers in the figure are 1 ... material, 2 ... conductive part 2A ... ground electrode, 2B ... high voltage electrode
Claims (3)
状の導電部を形成し、気流の流入側に配した導電部を接
地電極、流出側に配した導電部を高圧電極とし、かつ該
材を線状または帯状の導電部と襞折り線とが交差する
ように襞折り加工し、該材の上流に塵埃帯電部を設け
ないことを特徴とする電極と不織布が一体構造の荷電式
フィルター。1. A linear or strip-shaped conductive portion is formed at a non-symmetrical position on the front and back of the material, the conductive portion arranged on the inflow side of the air flow is a ground electrode, and the conductive portion arranged on the outflow side is a high-voltage electrode, In addition, the material and the non-woven fabric are integrally structured so that a linear or strip-shaped conductive portion and a fold line intersect each other and a dust charging portion is not provided upstream of the material. Expression filter.
状体を材表面に接着することで形成した構造の特許請
求の範囲第1項記載の荷電式フィルター。2. The charge-type filter according to claim 1, which has a structure in which the conductive portion is formed by adhering a conductive linear body having a specific resistance of 10 4 Ω · cm or less to the material surface.
ーストを塗布することにより形成した構造の特許請求の
範囲第1項記載の荷電式フィルター。3. The charge-type filter according to claim 1, wherein the conductive portion is formed by applying a conductive paste having a specific resistance of 10 6 Ω · cm or less.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18171486A JPH0685890B2 (en) | 1986-07-31 | 1986-07-31 | Charge type filter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18171486A JPH0685890B2 (en) | 1986-07-31 | 1986-07-31 | Charge type filter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6336852A JPS6336852A (en) | 1988-02-17 |
JPH0685890B2 true JPH0685890B2 (en) | 1994-11-02 |
Family
ID=16105575
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18171486A Expired - Lifetime JPH0685890B2 (en) | 1986-07-31 | 1986-07-31 | Charge type filter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0685890B2 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH035020A (en) * | 1989-06-01 | 1991-01-10 | Kurimoto Ltd | Method for u-bending steel sheet by bending rolls |
JPH035021A (en) * | 1989-06-01 | 1991-01-10 | Kurimoto Ltd | Method for bending steel sheet spirally by bending rolls |
JP2520899Y2 (en) * | 1991-02-26 | 1996-12-18 | 日本バイリーン 株式会社 | filter |
JPH05264056A (en) * | 1992-03-16 | 1993-10-12 | Kankiyoo:Kk | Air cleaning filter having charged part with coating |
JP3904529B2 (en) | 2003-03-31 | 2007-04-11 | 株式会社栗本鐵工所 | Pipe forming method and apparatus |
US10168059B2 (en) * | 2015-09-11 | 2019-01-01 | Panasonic Intellectual Property Management Co., Ltd. | Filtering medium and air purifier |
JP6667130B2 (en) * | 2015-09-11 | 2020-03-18 | パナソニックIpマネジメント株式会社 | Filter media and air purifier |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50113876A (en) * | 1974-02-19 | 1975-09-06 | ||
JPS53115978A (en) * | 1977-03-21 | 1978-10-09 | Shiyunji Matsumoto | Electrostatic filter |
JPS5676253A (en) * | 1979-11-29 | 1981-06-23 | Fuji Electric Co Ltd | Dielectric filter member type air cleaner |
-
1986
- 1986-07-31 JP JP18171486A patent/JPH0685890B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPS6336852A (en) | 1988-02-17 |
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