JPH05154409A - Electrical precipitator - Google Patents
Electrical precipitatorInfo
- Publication number
- JPH05154409A JPH05154409A JP32578591A JP32578591A JPH05154409A JP H05154409 A JPH05154409 A JP H05154409A JP 32578591 A JP32578591 A JP 32578591A JP 32578591 A JP32578591 A JP 32578591A JP H05154409 A JPH05154409 A JP H05154409A
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- Prior art keywords
- electrodes
- discharge electrode
- electrode
- discharge
- opposite
- 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.)
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Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、電気集塵機に関し、特
に帯電部における放電電極の改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrostatic precipitator, and more particularly to improvement of a discharge electrode in a charging section.
【0002】[0002]
【従来の技術】電気集塵機には、その主な機能として放
電電極と対向電極との間でコロナ放電を生じさせ、その
コロナ放電で空気中の塵を帯電させる帯電機能と、その
帯電された塵を集塵する集塵機能との二つの機能が備え
られている。このような電気集塵機の集塵特性は、帯電
部(アイオナイザ)の放電電流特性にほぼ比例する。そ
して帯電部では、できるだけ低い電圧でより多くの放電
電流を流すことが安全性等の設計的見地から重要となっ
ている。そのため、帯電部の放電電極は、対向電極に対
して十分に表面積及び体積を小さくする必要がある。こ
のために放電電極には、ばね体等で引張られた金属細線
等が用いられている。2. Description of the Related Art An electrostatic precipitator has a main function of causing a corona discharge between a discharge electrode and a counter electrode and charging the dust in the air by the corona discharge, and the charged dust. It has two functions, a dust collecting function for collecting dust. The dust collection characteristic of such an electrostatic precipitator is almost proportional to the discharge current characteristic of the charging section (ionizer). In the charging section, it is important from a design standpoint such as safety that a larger discharge current is allowed to flow at a voltage as low as possible. Therefore, the discharge electrode of the charging unit needs to have a sufficiently small surface area and volume with respect to the counter electrode. For this reason, a thin metal wire pulled by a spring body or the like is used for the discharge electrode.
【0003】図5は、このような従来の電気集塵機に於
ける帯電部を示している。同図(b)は、同図(a)に
おける放電電極及び対向電極部分の断面図である。電気
集塵機は、清浄化すべき空気の流れに対し、その上流側
に帯電部が設けられ、下流側に図示省略の集塵部が設け
られている。同図中、10はアイオナイザフレームであ
り、アイオナイザフレーム10中には、直径100μm
程度の金属細線からなる放電電極11と対向電極12と
が適宜間隔をおいて交互に配置されている。金属細線か
らなる放電電極11は、一端がコイルばね13を介して
電極端子14に接続され、他端は掛止端子15に掛止め
られて対向電極12面と平行になるように引張られてい
る。そして、この例では、放電電極11に(+)の高電
圧が印加されてコロナ放電が生じ、空気中の塵16が帯
電されるようになっている。一方、図示省略の集塵部
は、適宜間隔をおいて対向配置された集塵電極と対向電
極とで構成されている。そして、この両電極間に電圧が
加えられ帯電部で帯電された塵16が集塵されるように
なっている。FIG. 5 shows a charging section in such a conventional electrostatic precipitator. FIG. 2B is a sectional view of the discharge electrode and the counter electrode portion in FIG. The electrostatic precipitator is provided with a charging unit on the upstream side and a dust collecting unit (not shown) on the downstream side with respect to the flow of air to be cleaned. In the figure, 10 is an ionizer frame, and the ionizer frame 10 has a diameter of 100 μm.
The discharge electrodes 11 and the counter electrodes 12 each made of a thin metal wire are alternately arranged at appropriate intervals. One end of the discharge electrode 11 made of a thin metal wire is connected to the electrode terminal 14 via the coil spring 13, and the other end is hooked by the hooking terminal 15 and pulled so as to be parallel to the surface of the counter electrode 12. .. Then, in this example, a high voltage (+) is applied to the discharge electrode 11 to cause corona discharge, and the dust 16 in the air is charged. On the other hand, the dust collecting part (not shown) is composed of a dust collecting electrode and a counter electrode which are arranged to face each other with an appropriate interval. Then, a voltage is applied between the electrodes to collect the dust 16 charged by the charging portion.
【0004】[0004]
【発明が解決しようとする課題】従来の電気集塵機は、
放電性能を高め且つオゾン発生量を極力抑えるために、
放電電極としてばね体等で引張った金属細線を対向電極
に対し平行に配置した線方式のものが主流となってい
る。しかしながら、線方式の電気集塵機は、放電電極に
ばね体等で引張った極めて細い線径の金属細線が用いら
れていたため、以下のような問題があった。The conventional electrostatic precipitator has the following problems.
In order to improve the discharge performance and suppress the ozone generation amount as much as possible,
As a discharge electrode, a wire system in which a thin metal wire pulled by a spring body or the like is arranged in parallel with a counter electrode is predominant. However, the wire type electrostatic precipitator has the following problems because the discharge electrode is made of a thin metal wire having an extremely thin wire diameter pulled by a spring body or the like.
【0005】製造過程で、金属細線からなる放電電極
が平行に配置された2枚の対向電極間の中心にこない場
合、対向電極に近い方のみが放電をし、他方は全く放電
しない場合がある。このため集塵効率が低下する(図6
の(a),(b),(c)参照)。製造、輸送又は電
極洗浄などのメンテナンス時等に、その金属細線に切断
等の生じるおそれがあり、取扱に細心の注意が必要であ
った。放電電極である金属細線と対向電極との間隔を
一定距離に保持するため、金属細線に常に一定の張力を
掛けておかなければならない。この結果、長期使用によ
り金属細線に切断の生じるおそれがあり、切断が生じた
場合は対向電極との接触で事故を発生する危険性があっ
た(図7の(a),(b)参照)。製造時においても
金属細線の張力管理等が必要となり、製造のコスト高を
招いていた。In the manufacturing process, when the discharge electrode made of a thin metal wire does not come to the center between the two counter electrodes arranged in parallel, only the one closer to the counter electrode may discharge and the other may not discharge at all. .. This reduces the dust collection efficiency (Fig. 6).
(A), (b), (c)). At the time of maintenance such as manufacturing, transportation, and electrode cleaning, the metal thin wire may be cut, so that careful handling is required. In order to keep the distance between the metal thin wire, which is the discharge electrode, and the counter electrode at a constant distance, it is necessary to constantly apply a constant tension to the metal thin wire. As a result, the thin metal wire may be cut due to long-term use, and if the cutting occurs, there is a risk that an accident may occur due to contact with the counter electrode (see (a) and (b) of FIG. 7). .. At the time of manufacturing, it is necessary to control the tension of the thin metal wires, which causes an increase in manufacturing cost.
【0006】そこで、本発明は、製造時の若干のばらつ
きに対応可能で、集塵効率を向上させることができ、さ
らには安全性の高い電気集塵機を提供することを目的と
する。[0006] Therefore, an object of the present invention is to provide an electrostatic precipitator which can cope with slight variations during manufacturing, can improve the dust collecting efficiency, and is highly safe.
【0007】[0007]
【課題を解決するための手段】本発明は上記課題を解決
するために、平行に対向させた1対の対向電極間に放電
電極を配置し、当該放電電極と対向電極の間で生じさせ
たコロナ放電で空気中の塵を帯電させて集塵する電気集
塵機であって、前記放電電極は、前記1対の対向電極間
の間隔より短い複数の線状電極を当該1対の対向電極の
対向面に略垂直方向に適宜間隔をおいて配設してなるこ
とを要旨とする。In order to solve the above-mentioned problems, the present invention has a structure in which a discharge electrode is arranged between a pair of counter electrodes which are opposed to each other in parallel, and is generated between the discharge electrode and the counter electrode. An electrostatic precipitator that collects dust in the air by corona discharge to collect the dust, wherein the discharge electrode has a plurality of linear electrodes that are shorter than the interval between the pair of counter electrodes facing each other. The gist is that they are arranged at appropriate intervals in a direction substantially perpendicular to the surface.
【0008】[0008]
【作用】上記構成により、製造過程等において複数の放
電電極と対向電極間距離にある程度のばらつきがある場
合でも対向電極に近い放電電極ほど放電電流量が多くな
り、スパッタリング現象により電極先端が浸蝕されて時
間経過とともに他の放電電極の放電電流量と同じになる
ように長さが調整される。これにより長期的に安定して
稼動させることが可能となる。放電電極は複数の線状電
極からなるため、電荷の集中が大きく帯電部内部におい
てイオン化される領域が大きくなる。その結果、集塵効
率の向上が実現される。また、洗浄中や放電中に放電電
極の一部に切断等が生じても、放電電極は対向電極間距
離より寸法が短いため、電極間を短絡するおそれがな
く、高い安全性が得られる。With the above construction, even if there are some variations in the distance between the plurality of discharge electrodes and the counter electrode during the manufacturing process, the discharge electrode closer to the counter electrode has a larger discharge current amount, and the electrode tip is eroded by the sputtering phenomenon. The length is adjusted so that it becomes the same as the discharge current amount of the other discharge electrodes with the passage of time. This enables stable operation for a long period of time. Since the discharge electrode is composed of a plurality of linear electrodes, the concentration of electric charges is large, and the ionized region inside the charging unit is large. As a result, the dust collection efficiency is improved. Further, even if a part of the discharge electrode is cut during cleaning or discharging, the size of the discharge electrode is shorter than the distance between the opposing electrodes, so that there is no possibility of short-circuiting between the electrodes, and high safety is obtained.
【0009】[0009]
【実施例】以下、本発明の実施例を図1ないし図4に基
づいて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
【0010】まず、図1を用いて、電気集塵機の構成を
説明すると、清浄化すべき空気の流れに対し、その上流
側に放電電極と対向電極を備えた帯電部が設けられ、下
流側に図示省略の集塵部が設けられている。そして、こ
の実施例では、帯電部が次のように構成されている。First, the structure of the electrostatic precipitator will be described with reference to FIG. 1. A charging unit having a discharge electrode and a counter electrode is provided on the upstream side of the flow of air to be cleaned, and is shown on the downstream side. An omitted dust collecting part is provided. Further, in this embodiment, the charging section is configured as follows.
【0011】即ち、平行に対向させた1対の対向電極
1,1間に、その電極1,1間の間隔より短い複数の線
状電極からなる放電電極2が、骨材3に支持されて当該
1対の対向電極1,1の対向面にほぼ垂直方向に適宜間
隔をおいて配設されている。線状の放電電極2は、放電
特性等を考慮したとき、線径が200μm以下が望まし
く、材質はタングステン(W)、チタン(Ti)、ニッ
ケル(Ni)等が用いられ、骨材3に溶接等により固定
されている。That is, a discharge electrode 2 composed of a plurality of linear electrodes shorter than the distance between the electrodes 1 and 1 is supported by an aggregate 3 between a pair of opposed electrodes 1 and 1 facing each other in parallel. The pair of opposing electrodes 1 and 1 are arranged at appropriate intervals in a substantially vertical direction on the opposing surfaces. In consideration of discharge characteristics and the like, the linear discharge electrode 2 preferably has a wire diameter of 200 μm or less, and is made of tungsten (W), titanium (Ti), nickel (Ni), or the like, and is welded to the aggregate 3. It is fixed by etc.
【0012】この実施例の電気集塵機は上述のように構
成されており、スイッチ5がONになると電源4から放
電電極2に(+)の高電圧が印加されて対向電極1との
間でコロナ放電が発生し、空気中の塵が帯電される。こ
のとき、図2(a)に示すように金属細線からなる放電
電極2が洗浄等によって変形したとしても、放電電極2
の電荷と対向電極1の逆特性電荷との間に互いに引付け
合う力が作用し、放電電極2の先端が対向電極1に近づ
こうとするため、同図(b)に示すように放電電極2を
真っすぐに保つことが可能となる。そして、放電電極2
は線状電極からなるため、電荷の集中が大きく帯電部内
部においてイオン化される領域も大きくなる。その結
果、集塵効率の向上が実現される。また、図3の
(a),(b)に示すように、製造過程で各放電電極2
先端と対向電極1間の距離にばらつきがある場合でも、
対向電極1に近いものほど放電電流量は多くなり、それ
に伴い放電電極2先端のコロナイオン粒子や電子の衝突
の増加、さらにはスパッタリング現象により放電電極2
の先端は浸蝕されて行き、他の放電電極2の放電量と同
じになるように長さが調整される(図3(c))。した
がって、従来例のように非常に苦労して製造精度を上げ
る必要は無く、或る程度ラフな精度でも放電が起こるた
め製造性が向上する。さらに、洗浄などを行うことで、
図4(b)に示すように放電電極2が骨材3より外れた
り、途中で断線しても、対向電極1間距離より放電電極
2の寸法が短いため、線状屑が飛散するだけで電極間を
短絡しショートする危険性がない。The electrostatic precipitator of this embodiment is constructed as described above, and when the switch 5 is turned on, a high voltage (+) is applied to the discharge electrode 2 from the power source 4 and the corona between the counter electrode 1 and the counter electrode 1. Electric discharge occurs and dust in the air is charged. At this time, even if the discharge electrode 2 made of a thin metal wire is deformed by washing or the like as shown in FIG.
Between the electric charge of the discharge electrode 2 and the opposite characteristic charge of the counter electrode 1 act on each other, and the tip of the discharge electrode 2 tries to approach the counter electrode 1. Therefore, as shown in FIG. It is possible to keep straight. And the discharge electrode 2
Since is composed of a linear electrode, the concentration of electric charges is large and the region of ionization inside the charging portion is also large. As a result, the dust collection efficiency is improved. Also, as shown in FIGS. 3A and 3B, each discharge electrode 2 is manufactured during the manufacturing process.
Even if the distance between the tip and the counter electrode 1 varies,
The closer to the counter electrode 1, the larger the discharge current amount, and accordingly, the collision of corona ion particles and electrons at the tip of the discharge electrode 2 is increased, and further, the discharge phenomenon is caused by the sputtering phenomenon.
Is eroded and its length is adjusted so as to be the same as the amount of discharge of the other discharge electrodes 2 (FIG. 3C). Therefore, unlike the conventional example, it is not necessary to raise the manufacturing precision very hard, and since the discharge occurs even with a somewhat rough precision, the productivity is improved. In addition, by cleaning,
As shown in FIG. 4 (b), even if the discharge electrode 2 is disengaged from the aggregate 3 or is broken in the middle, the size of the discharge electrode 2 is shorter than the distance between the opposing electrodes 1, and therefore the linear scraps are scattered. There is no risk of short-circuiting between electrodes.
【0013】[0013]
【発明の効果】以上説明したように、本発明によれば、
放電電極を1対の対向電極間の間隔より短い複数の線状
電極により形成し、この複数の線状電極を当該1対の対
向電極の対向面に略垂直方向に適宜間隔をおいて配設し
たため、放電電極と対向電極間距離にある程度のばらつ
きがある場合でも対向電極に近い放電電極ほど放電電流
量が多くなり、スパッタリング現象により電極先端が浸
蝕されて他の放電電極の放電電流量と同じになるように
長さが調整される。したがって製造時の若干のばらつき
に対応可能となって製造性の向上が得られる。放電電極
は複数の線状電極からなるため、電荷の集中が大きく帯
電部内部におけるイオン化領域が大になり、集塵効率の
向上が実現される。また何らかの原因により放電電極の
一部に切断等が生じても、放電電極は対向電極間距離よ
り寸法が短いため、電極間短絡が起るおそれがなく、高
い安全性が得られる。As described above, according to the present invention,
The discharge electrode is formed by a plurality of linear electrodes that are shorter than the distance between the pair of opposing electrodes, and the plurality of linear electrodes are arranged on the opposing surfaces of the pair of opposing electrodes at appropriate intervals in a substantially vertical direction. Therefore, even if there is some variation in the distance between the discharge electrode and the counter electrode, the discharge electrode closer to the counter electrode has a larger discharge current amount, and the electrode tip is corroded due to the sputtering phenomenon, and the discharge current amount is the same as that of other discharge electrodes. The length is adjusted so that Therefore, it is possible to cope with a slight variation in manufacturing, and the manufacturability can be improved. Since the discharge electrode is composed of a plurality of linear electrodes, the concentration of charges is large and the ionization region inside the charging section is large, so that the dust collection efficiency is improved. Further, even if a part of the discharge electrode is cut for some reason, the size of the discharge electrode is shorter than the distance between the opposing electrodes, so that a short circuit between the electrodes does not occur and high safety can be obtained.
【図1】本発明に係る電気集塵機の実施例を示す要部構
成図である。FIG. 1 is a main part configuration diagram showing an embodiment of an electrostatic precipitator according to the present invention.
【図2】本実施例の作用を説明するための図である。FIG. 2 is a diagram for explaining the operation of the present embodiment.
【図3】本実施例において、放電電極と対向電極間距離
にばらつきがある場合の放電状態を説明するための図で
ある。FIG. 3 is a diagram for explaining a discharge state in the case where the distance between the discharge electrode and the counter electrode varies in the present embodiment.
【図4】本実施例において、放電電極に断線が生じたと
きの安全性を説明するための図である。FIG. 4 is a diagram for explaining the safety when the discharge electrode is broken in the present embodiment.
【図5】従来の電気集塵機の構成図である。FIG. 5 is a configuration diagram of a conventional electric dust collector.
【図6】従来例において、放電電極が一方の対向電極側
に片寄った場合等における放電状態を説明するための図
である。FIG. 6 is a diagram for explaining a discharge state when the discharge electrode is offset to one counter electrode side in the conventional example.
【図7】従来例において、放電電極に断線が生じた場合
を説明するための図である。FIG. 7 is a diagram for explaining a case where a discharge electrode is broken in a conventional example.
1 対向電極 2 放電電極 3 骨材 1 Counter electrode 2 Discharge electrode 3 Aggregate
───────────────────────────────────────────────────── フロントページの続き (72)発明者 服部 隆雄 神奈川県横浜市磯子区新杉田町8番地 株 式会社東芝住空間システム技術研究所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takao Hattori 8 Shinshinsita-cho, Isogo-ku, Yokohama, Kanagawa Prefecture
Claims (1)
電電極を配置し、当該放電電極と対向電極の間で生じさ
せたコロナ放電で空気中の塵を帯電させて集塵する電気
集塵機であって、 前記放電電極は、前記1対の対向電極間の間隔より短い
複数の線状電極を当該1対の対向電極の対向面に略垂直
方向に適宜間隔をおいて配設してなることを特徴とする
電気集塵機。1. Electricity in which a discharge electrode is disposed between a pair of counter electrodes facing each other in parallel, and corona discharge generated between the discharge electrode and the counter electrode charges and collects dust in the air. The dust collector is a dust collector, wherein a plurality of linear electrodes each having a length shorter than an interval between the pair of counter electrodes are arranged at appropriate intervals in a substantially vertical direction on an opposing surface of the pair of counter electrodes. An electrostatic precipitator characterized by becoming.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32578591A JPH05154409A (en) | 1991-12-10 | 1991-12-10 | Electrical precipitator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32578591A JPH05154409A (en) | 1991-12-10 | 1991-12-10 | Electrical precipitator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH05154409A true JPH05154409A (en) | 1993-06-22 |
Family
ID=18180583
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP32578591A Pending JPH05154409A (en) | 1991-12-10 | 1991-12-10 | Electrical precipitator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH05154409A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7258730B2 (en) * | 2004-07-06 | 2007-08-21 | Lg Electronics Inc. | Air purifier |
US7316735B2 (en) * | 2003-08-29 | 2008-01-08 | Mitsusbishi Heavy Industries, Ltd. | Dust collector |
US7402194B2 (en) * | 2005-07-27 | 2008-07-22 | International Business Machines Corporation | Carbon nanotubes as low voltage field emission sources for particle precipitators |
US7651553B2 (en) * | 2005-09-29 | 2010-01-26 | Sarnoff Corporation | Ballast circuit for electrostatic particle collection systems |
US20100269691A1 (en) * | 2009-04-24 | 2010-10-28 | Baumgartner Environics, Inc. | Air quality enhancement system |
US20100294129A1 (en) * | 2007-05-31 | 2010-11-25 | Op De Laak Marcel | Method and device for precipitating impurities from a stream of gas |
US20110308384A1 (en) * | 2009-04-24 | 2011-12-22 | Baumgartner Environics. Inc. | Air quality enhancement system |
-
1991
- 1991-12-10 JP JP32578591A patent/JPH05154409A/en active Pending
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7316735B2 (en) * | 2003-08-29 | 2008-01-08 | Mitsusbishi Heavy Industries, Ltd. | Dust collector |
US7258730B2 (en) * | 2004-07-06 | 2007-08-21 | Lg Electronics Inc. | Air purifier |
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