JPS624452A - Air cleaner - Google Patents
Air cleanerInfo
- Publication number
- JPS624452A JPS624452A JP60142955A JP14295585A JPS624452A JP S624452 A JPS624452 A JP S624452A JP 60142955 A JP60142955 A JP 60142955A JP 14295585 A JP14295585 A JP 14295585A JP S624452 A JPS624452 A JP S624452A
- Authority
- JP
- Japan
- Prior art keywords
- filter
- electret filter
- upstream
- electret
- electric field
- 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.)
- Pending
Links
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 17
- 239000000428 dust Substances 0.000 abstract description 26
- 239000002245 particle Substances 0.000 abstract description 17
- 230000005684 electric field Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 229920000136 polysorbate Polymers 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 3
- 241000269821 Scombridae Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000020640 mackerel Nutrition 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
Landscapes
- Electrostatic Separation (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は空気中の粉塵粒子を捕集するための空気清浄装
置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an air cleaning device for collecting dust particles in the air.
従来の技術
一般に空気清浄装置としては静電式のものが開発されて
きている。2. Description of the Related Art In general, electrostatic type air purifiers have been developed.
従来、この種の静電式の空気清浄装置は第４図に示すよ
うな構成であった。すなわち、フィルタ外枠１の内部に
流入する空気流７に対して上流側に荷電部２を設け、下
流側にエレクトレットフィルタ３を設けておシ、荷電部
２は放電線４と平行平板電極６とから成シ、放電線４と
平行平板電極６との間に直流高圧電源６から放電線４に
プラス。Conventionally, this type of electrostatic air purifying device has had a configuration as shown in FIG. That is, the charging section 2 is provided on the upstream side with respect to the air flow 7 flowing into the inside of the filter outer frame 1, and the electret filter 3 is provided on the downstream side. Between the discharge wire 4 and the parallel plate electrode 6, there is a positive voltage from the DC high voltage power supply 6 to the discharge wire 4.
平行平板電極６にマイナスが接続された構成となってい
る。（たとえば特開昭６７−１５８５６号公報）
上記構成において、粉塵粒子を含む空気流７が送風機等
により荷電部２に流入すると、放電線４にθ（グラス）
、平行平板電極６にＯ（マイナス）の直流高電圧が印加
されているため、放電線４と平行平板電極５との間にお
いて、■のコロナ放電が生じ、流入した粉塵粒子はコロ
ナ放電により、■に荷電される。この■に荷電された粉
塵粒子は、第３図に示すようなエレクトレットフィルり
３０戸材８の双極分極子のＯ側に静電気力により引きつ
けられ捕集されるものであった。It has a configuration in which the negative terminal is connected to the parallel plate electrode 6. (For example, Japanese Unexamined Patent Publication No. 67-15856) In the above configuration, when the air flow 7 containing dust particles flows into the charging section 2 by a blower or the like, the discharge wire 4 is
, Since a high DC voltage of O (minus) is applied to the parallel plate electrode 6, a corona discharge (■) occurs between the discharge wire 4 and the parallel plate electrode 5, and the inflowing dust particles are caused by the corona discharge. ■It is charged. The dust particles charged to ``■'' were attracted and collected by the electrostatic force to the O side of the dipole polarizer of the electret fill 30 door material 8 as shown in FIG.
発明が解決しようとする問題点
このような従来の構成では、エレクトレットフィルタ３
の戸材８がプラスとマイナスに分極しているため強力な
電界を持っており、荷電部２に影響を与え放電線４と平
行平板電極６の間の電流が流れにくくなシ、エレクトレ
ットフィルタ３がない場合より粉塵粒子を荷電させる割
合が小さくなシ集塵効率が悪くなる。そのため放電線４
と平行平板電極５間の電圧をかなり高くする必要がある
という問題があった。Problems to be Solved by the Invention In such a conventional configuration, the electret filter 3
Since the door material 8 is polarized positively and negatively, it has a strong electric field, which affects the charged part 2 and makes it difficult for current to flow between the discharge wire 4 and the parallel plate electrode 6.The electret filter 3 The rate at which dust particles are charged is smaller than when there is no charge, and the dust collection efficiency becomes worse. Therefore, the discharge line 4
There was a problem in that the voltage between the parallel plate electrode 5 and the parallel plate electrode 5 had to be made considerably high.
また、前記の説明から明らかなように粉塵粒子の捕集は
第３図に示すように、エレクトレットフィルタ３の戸材
８（０側）のみによって行われ、荷電粒子が付着すると
、戸材８の電荷と粉塵粒子の電荷がキャンセルされ、エ
レクトレットフィルタ３の静電気力が弱まシ捕集効率の
低下を生じる。Furthermore, as is clear from the above description, dust particles are collected only by the door material 8 (0 side) of the electret filter 3, as shown in FIG. The electric charge and the electric charge of the dust particles are canceled, and the electrostatic force of the electret filter 3 is weakened, resulting in a decrease in collection efficiency.
すなわち、初期は高効率の粉塵集塵効率を得ることがで
きるが、粉塵が堆積するにしたがって集塵効率が徐々に
低下し寿命（交換期間）が短いという問題があった。That is, although high dust collection efficiency can be obtained initially, as dust accumulates, the dust collection efficiency gradually decreases, resulting in a short service life (replacement period).
本発明はこのような問題点を解決するもので、荷電部の
電圧が低くても、高効率を維持し、粉塵の捕集効率の低
下をおさえ寿命を伸ばすことを目的とするものである。The present invention is intended to solve these problems, and aims to maintain high efficiency even when the voltage of the charging section is low, suppress the decrease in dust collection efficiency, and extend the service life.
問題点を解決するだめの手段
この問題点を解決するために本発明は、空気の流れに対
して上流側に放電線と平行平板電極と直流高圧電源から
なる荷電部とを設けるとともに下流側にエレクトレット
フィルタを備え、前記エレクトレットフィルタの上流側
と下流側に導電性フィルタを設け、前記導電性フィルタ
に電圧を印加する構成としたものである。Means for Solving the Problem In order to solve this problem, the present invention provides a charging section consisting of a discharge wire, a parallel plate electrode, and a DC high voltage power supply on the upstream side of the air flow, and a charging section on the downstream side. The device includes an electret filter, conductive filters are provided upstream and downstream of the electret filter, and a voltage is applied to the conductive filter.
作 用
この構成によシ、エレクトレットフィルタの上流側と下
流側に設けた導電性フィルタがエレクトレットフィルタ
の強力な電界を遮断して荷電部に与える悪影響を阻止し
、また導電性フィルタに電圧を印加することによシ捕集
された粉塵の分極作用を促進し、エレクトレットフィル
タの寿命を伸ばすこととなる。Function: With this configuration, the conductive filters provided on the upstream and downstream sides of the electret filter block the strong electric field of the electret filter to prevent any adverse effects on the charged parts, and also apply voltage to the conductive filter. This promotes the polarization effect of the collected dust and extends the life of the electret filter.
実施例 以下本発明の一実施例を図面にもとづき説明する。Example An embodiment of the present invention will be described below based on the drawings.
第１図は本発明の一実施例による空気清浄装置の断面図
であシ、フィルタ外枠１ｏの内部には空気流１１に対し
て、上流側に荷電部１２を設け、下流側にエレクトレッ
トフィルタ１３を設けている。荷電部１２は、放電線１
４と平行平板電極１６とからなり、放電線１４と平行平
板電極１５との間に直流高圧電源１６から放電ａ！１４
にプラス。FIG. 1 is a sectional view of an air purifying device according to an embodiment of the present invention. Inside a filter outer frame 1o, a charging section 12 is provided on the upstream side with respect to the air flow 11, and an electret filter is provided on the downstream side. There are 13. The charging section 12 includes a discharge wire 1
4 and a parallel plate electrode 16, and a discharge a! from a DC high voltage power supply 16 is generated between the discharge wire 14 and the parallel plate electrode 15. 14
Plus.
平行平板電極１６にマイナスが接続されている。A negative terminal is connected to the parallel plate electrode 16.
エレクトレットフィルタ１３の上流側と下流側には金網
等の導電性フィルタ１７．１８を設けてあシ、上流側の
導電性フィルタ１７に直流高圧電源１６のマイナス、下
流側の導電性フィルタ１８に直流高圧電源１６のプラス
が接続されている。そして上流側の導電性フィルタ１７
と下流側の導電性フィルタ１８の間に電気抵抗器１９が
接続され、下流側の導電性フィルタ１８と直流高圧電源
１６のプラス側の間に電気抵抗器２ｏを接続している。Conductive filters 17 and 18 such as wire mesh are provided on the upstream and downstream sides of the electret filter 13. The positive terminal of the high voltage power supply 16 is connected. And upstream conductive filter 17
An electric resistor 19 is connected between the conductive filter 18 on the downstream side and the positive side of the DC high voltage power supply 16, and an electric resistor 2o is connected between the conductive filter 18 on the downstream side and the positive side of the DC high voltage power supply 16.
上記構成において、粉塵粒子を含む空気流１１が送風機
等により、荷電部１２に流入する。荷電部１２において
、放電線１４と平行平板電極１５は２０鳩の°距離にあ
り、約８Ｗの電圧で約１４０μＡの電流が流れ、プラス
のコロナ放電が行なわれている。このコロナ放電によっ
て、荷電部２へ流入した粉塵粒子は、■に荷電される。In the above configuration, air flow 11 containing dust particles flows into charging section 12 by a blower or the like. In the charging section 12, the discharge wire 14 and the parallel plate electrode 15 are located at a distance of 20°, a current of about 140 μA flows at a voltage of about 8 W, and a positive corona discharge is performed. Due to this corona discharge, the dust particles that have flowed into the charging section 2 are charged to ■.
この荷電された粉塵粒子は、第３図に示すようなエレク
トレットフィルタ１３０ｐ材８の双極分極子のＯ側に静
電気力により引きつけられ、粉塵粒子が捕集される。These charged dust particles are attracted by electrostatic force to the O side of the dipole polarizer of the electret filter 130p material 8 as shown in FIG. 3, and the dust particles are collected.
しかし、上流側の導電性フィルタ１７を設けていない状
態でエレクトレットフィルタ１３を荷電部２へ近づける
と、エレクトレットフィルタ１３自身の強力な電界によ
シ、放電線１４と平行平板電極１６との間に８ＫＶの電
圧で１４０μＡ流れていた電流が、同じ電圧で約４０μ
Ａに下がるため粉塵粒子の荷電効率が低下する。１４０
μ八程度の電流を流そうとすると１０ＫＶ以上の電圧が
必要となシ、火花放電が起こり大変危険な状態となる。However, when the electret filter 13 is brought close to the charging section 2 without the conductive filter 17 on the upstream side, the strong electric field of the electret filter 13 itself creates a gap between the discharge wire 14 and the parallel plate electrode 16. The current that used to flow 140μA at a voltage of 8KV becomes approximately 40μA at the same voltage.
A, the charging efficiency of dust particles decreases. 140
If a current of about 8 μm were to flow, a voltage of 10 kV or more would be required, and spark discharge would occur, resulting in a very dangerous situation.
また、エレクトレットフィルタ１３に荷電粉塵粒子が付
着すると、戸材８と荷電粉塵粒子の電荷がキャンセルさ
れるが、エレクトレットフィルタ１３の上流側と下流側
に設けた導電性フィルタ１７゜１８に電圧を印加し、エ
レクトレットフィルタ１３に電界を与えることにより、
粉塵粒子が付着した状態で分極され、エレクトレットフ
ィルタ１３の性能を維持し、寿命を伸ばすことができる
。上流側と下流側の導電性フィルタ１７．１８に印加す
る電圧は、８ＫＶと高い電圧にする必要がないので、電
気抵抗器１９．２０によって、性能および安全上問題の
ない電圧に設定する。Furthermore, when charged dust particles adhere to the electret filter 13, the electric charge between the door material 8 and the charged dust particles is canceled, but voltage is applied to the conductive filters 17 and 18 provided on the upstream and downstream sides of the electret filter 13. By applying an electric field to the electret filter 13,
The electret filter 13 is polarized with the dust particles attached thereto, so that the performance of the electret filter 13 can be maintained and its life can be extended. The voltage applied to the upstream and downstream conductive filters 17.18 does not need to be as high as 8 KV, so it is set by the electrical resistor 19.20 to a voltage that does not pose a problem in terms of performance and safety.
第２図は、本実施例の空気清浄装置の寿命についての粉
塵捕集効率の測定値であり、ａは、本実施例の空気清浄
装置の継時変化、ｂは従来例の第４図に示す空気清浄装
置の継時変化である。Figure 2 shows the measured values of dust collection efficiency over the life of the air purifier of this example, where a is the change over time in the air purifier of this example, and b is the conventional example in Figure 4. The figure shows changes over time in the air purifying device.
図で明らかなように、本エアフィルタは、従来例に比べ
て、高効率でしかも、捕集効率の低下を防止することが
でき、長寿命を得ることができるものである。As is clear from the figure, the present air filter has higher efficiency than the conventional example, can prevent a decrease in collection efficiency, and has a long life.
発明の効果
以上の実施例の説明よシ明らかなように本発明によれば
、エレクトレット、フィルタの上流側と下流側に導電性
フィルタを設けることにより、エレクトレットフィルタ
自身の強力な電界による荷電部への影響をなりシ、エレ
クトレットフィルター電界を与えることにより、粉塵粒
子の捕集を高効率でしかも捕集効率の低下を防止するこ
とができ、長寿命の空気清浄装置を得られるものである
。Effects of the Invention As is clear from the above description of the embodiments, according to the present invention, by providing conductive filters on the upstream and downstream sides of the electret filter, the electret filter itself can conduct a charged portion due to its strong electric field. By applying an electric field to the electret filter, it is possible to collect dust particles with high efficiency and prevent a decrease in the collection efficiency, thereby providing an air purifying device with a long life.
第１図は本発明の一実施例による空気清浄装置を示す断
面図、第２図は本発明の空気清浄装置と従来例の空気清
浄装置の捕集効率の継時変化を示すグラフ、第３図はエ
レクトレットフィルタＦ材の構造を説明するための図、
第４図は従来の空気清浄装置を示す断面図である。
１２・・・・・・荷電部、１３・・・・・・エレクトレ
ットフィルタ、１４・・・・・・放電線、１５・・・・
・・平行平板電極、１６・・・・・・直流高圧電源、１
７・・・・・・上流側の導電性フィルタ、１８・・・・
・・下流側の導電性フィルタ。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名１４
− 秋宅４祭
ｆδ−ｍ−１＝テＪピＬ１５【すの ・Ｉ第２図
α−−−木実壕ゼ列バアフ４）Ｌ ｆ
［％Ｊ
ｂ−４ｋｉ イダリ・ ″ｌバ］定Ｐす１鯖１貢FIG. 1 is a sectional view showing an air purifying device according to an embodiment of the present invention, FIG. 2 is a graph showing changes over time in the collection efficiency of the air purifying device of the present invention and a conventional air cleaning device, and FIG. The figure is a diagram for explaining the structure of the electret filter F material.
FIG. 4 is a sectional view showing a conventional air cleaning device. 12...Charging section, 13...Electret filter, 14...Discharge wire, 15...
...Parallel plate electrode, 16...DC high voltage power supply, 1
7... Upstream conductive filter, 18...
...Downstream conductive filter. Name of agent: Patent attorney Toshio Nakao and 1 other person14
- Autumn house 4 festival f δ - m - 1 = Te J Pi L15 [Suno I Fig. 2 α - - Nut trench Ze row Baahu 4) L f [%J
b-4ki Idari ``lba] fixed Psu 1 mackerel 1 contribution
Claims (1)
直流電圧電源からなる荷電部とを設けるとともに、下流
側にエレクトレットフィルタを備え、前記エレクトレッ
トフィルタの上流側と下流側に導電性フィルタを設け、
前記導電性フィルタに電圧を印加するようにした空気清
浄装置。With respect to the air flow, a charging section consisting of a discharge wire, a parallel plate electrode, and a DC voltage power source is provided on the upstream side, an electret filter is provided on the downstream side, and conductive filters are provided on the upstream and downstream sides of the electret filter. established,
An air purifying device in which a voltage is applied to the conductive filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60142955A JPS624452A (en) | 1985-06-28 | 1985-06-28 | Air cleaner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60142955A JPS624452A (en) | 1985-06-28 | 1985-06-28 | Air cleaner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS624452A true JPS624452A (en) | 1987-01-10 |
Family
ID=15327540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60142955A Pending JPS624452A (en) | 1985-06-28 | 1985-06-28 | Air cleaner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS624452A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9114823B2 (en) | 2012-08-08 | 2015-08-25 | Mando Corporation | Actuating device employed in steering system for vehicle |
| DE102024115686A1 (en) * | 2024-06-05 | 2025-12-11 | Mahle International Gmbh | Air filter system and motor vehicle |
-
1985
- 1985-06-28 JP JP60142955A patent/JPS624452A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9114823B2 (en) | 2012-08-08 | 2015-08-25 | Mando Corporation | Actuating device employed in steering system for vehicle |
| DE102024115686A1 (en) * | 2024-06-05 | 2025-12-11 | Mahle International Gmbh | Air filter system and motor vehicle |
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