JPH02108B2 - - Google Patents
Info
- Publication number
- JPH02108B2 JPH02108B2 JP12682981A JP12682981A JPH02108B2 JP H02108 B2 JPH02108 B2 JP H02108B2 JP 12682981 A JP12682981 A JP 12682981A JP 12682981 A JP12682981 A JP 12682981A JP H02108 B2 JPH02108 B2 JP H02108B2
- Authority
- JP
- Japan
- Prior art keywords
- electric field
- voltage
- field curtain
- curtain device
- dielectric layer
- 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
- 230000005684 electric field Effects 0.000 claims description 53
- 238000001514 detection method Methods 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 11
- 239000002245 particle Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000007423 decrease Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005685 electric field effect Effects 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- -1 hydrogen ions Chemical class 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/88—Cleaning-out collected particles
- B03C3/885—Cleaning-out collected particles by travelling or oscillating electric fields, e.g. electric field curtains
Landscapes
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
- Electrostatic Separation (AREA)
- Electrostatic Spraying Apparatus (AREA)
Description
【発明の詳細な説明】
本発明は電界カーテン装置に関し、特に、環境
条件の変化と無関係に、帯電粒子の搬送などの電
界カーテン効果を設定値に保つために、電界カー
テン電極への印加電圧を自己制御する様に構成し
た接触型電界カーテン制御装置に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric field curtain device, and in particular to an electric field curtain device in which the voltage applied to the electric field curtain electrodes is adjusted to maintain the electric field curtain effect, such as the transport of charged particles, at a set value regardless of changes in environmental conditions. The present invention relates to a contact type electric field curtain control device configured to self-control.
第１図に接触型電界カーテン装置の概略平面図
を、第２図にその−線に沿う一部拡大断面図
を示す。これらの図において、１は第１極性線状
電極群、１ａは第１極性電極端子、２は第２極性
線状電極群、２ａは第２極性電極端子である。 FIG. 1 shows a schematic plan view of the contact type electric field curtain device, and FIG. 2 shows a partially enlarged sectional view taken along the - line. In these figures, 1 is a first polar linear electrode group, 1a is a first polar electrode terminal, 2 is a second polar linear electrode group, and 2a is a second polar electrode terminal.
また、３は前記各線状電極群１，２がその上
（第２図では下面）に形成される誘電体層（例え
ば厚さ0.05〜0.2mm程度のポリエステルまたはポ
リイミドフイルム）、４は前記各線状電極群１，
２を蔽う絶縁体層（例えば、厚さ0.5〜３mm程度
のシリコンゴムまたはエポキシ樹脂モールド層）
である。 Further, 3 is a dielectric layer (for example, a polyester or polyimide film with a thickness of about 0.05 to 0.2 mm) on which each of the linear electrode groups 1 and 2 is formed (on the bottom surface in FIG. 2), and 4 is a dielectric layer on which each of the linear electrode groups 1 and 2 is formed. electrode group 1,
2 (for example, a silicone rubber or epoxy resin mold layer with a thickness of about 0.5 to 3 mm)
It is.
５は前記各線状電極群１，２間に交流電圧（単
相または３相）を印加するための交流電源であ
る。なお、線状電極は厚さ10〜50μｍ程度の銅ま
たはアルミニウム薄層等を、例えばエツチングす
ることによつて形成することができる。 5 is an AC power supply for applying an AC voltage (single phase or three phase) between each of the linear electrode groups 1 and 2. The linear electrodes can be formed by, for example, etching a thin copper or aluminum layer having a thickness of about 10 to 50 .mu.m.
これらの図から明らかなように、第１および第
２極性の線状電極群は交互に、隣り合つてほぼ平
行に配列される。それ故に、交流電源５から単相
または３相の交流電圧を印加すると、相隣る線状
電極１，２間に、第２図に点線で示したような不
平等交番電界を生ずる。 As is clear from these figures, the linear electrode groups of the first and second polarities are arranged alternately, adjacent to each other, and substantially parallel to each other. Therefore, when a single-phase or three-phase AC voltage is applied from the AC power supply 5, an unequal alternating electric field as shown by dotted lines in FIG. 2 is generated between the adjacent linear electrodes 1 and 2.
いま、微細粒子が誘電体層３に接触すると摩擦
帯電、誘導、電荷注入等によつて帯電粒子とな
る。そして、この帯電粒子は、ほぼ電気力線に沿
つて電気力学的振動を行なうようになる。また、
この現象は、予め帯電されている粒子が前記不平
等交番電界に近づいた場合にも、全く同様に発生
する。 Now, when fine particles come into contact with the dielectric layer 3, they become charged particles due to frictional charging, induction, charge injection, etc. Then, the charged particles begin to electrodynamically oscillate approximately along the lines of electric force. Also,
This phenomenon occurs in exactly the same way when pre-charged particles approach the unequal alternating electric field.
図示のように、前記電気力線は、誘電体層３の
表面に対して凸形に湾曲しているので、前記帯電
粒子は遠心力によつて、線状電極群１，２から遠
ざかる方向の駆動力を受ける。 As shown in the figure, since the electric lines of force are curved in a convex manner with respect to the surface of the dielectric layer 3, the charged particles are moved away from the linear electrode groups 1 and 2 by centrifugal force. Receives driving force.
なお、前記不平等交番電界が３相である場合
は、帯電粒子は一方向へ移送されることになる。 Note that when the unequal alternating electric field has three phases, charged particles are transported in one direction.
前述のような接触型電界カーテン装置では、湿
度が高くなると、誘電体層（エキサイタ層）３の
表面に界面吸着水の層が形成される。そして、前
記界面吸着水の層は、導電性を有する。その導電
メカニズムは、例えば、公知の「水素イオンの手
渡しによる導電」として説明される。 In the contact type electric field curtain device as described above, when the humidity increases, a layer of interfacially adsorbed water is formed on the surface of the dielectric layer (exciter layer) 3. The layer of interfacially adsorbed water has electrical conductivity. The conduction mechanism is explained as, for example, the well-known "conduction due to hand-over of hydrogen ions."
又、この界面吸着水の層は、低電界の下では電
気抵抗が比較的高いが、高電界下では、界面吸着
水の各粒子が電界の方向に伸長されて膜状連結層
となる為、その電気抵抗は大幅に減少する。な
お、この膜状連結作用は、低温域ほどその作用が
顕著である。 In addition, this layer of interfacially adsorbed water has a relatively high electrical resistance under a low electric field, but under a high electric field, each particle of interfacially adsorbed water is stretched in the direction of the electric field and becomes a film-like connection layer. Its electrical resistance is significantly reduced. Note that this membranous connection effect is more pronounced in the lower temperature range.
第３図に、前述の接触型電界カーテンの電気的
等価回路を示す。図中の、第１および第２図と同
一の符号は同一部分をあらわし、また各回路素子
としての抵抗やコンデンサは、それぞれつぎの部
分の抵抗や容量をあらわしている。 FIG. 3 shows an electrical equivalent circuit of the above-mentioned contact type electric field curtain. In the figure, the same reference numerals as in FIGS. 1 and 2 represent the same parts, and the resistors and capacitors as each circuit element represent the resistance and capacitance of the next part, respectively.
C1，R1：隣接電極間に介在される絶縁体層４、
誘電体層３およびその界面の合成静電容量およ
び合成電気抵抗
C2，C3：電極１，２の直上の誘電体層３の静電
容量（C2＝C3）
R2，R3：電極１，２の直上の誘電体層３の電気
抵抗（R2＝R3）
C4：隣接電極１，２間の誘電体層３上の空気の
静電容量
R4：隣接電極１，２間の誘電体層３上の空気の
電気抵抗
R5：隣接電極間１，２上の誘電体層３と空気と
の界面の電気抵抗
第１および第２図に示した電界カーテン装置の
電極端子１ａ，２ａに、交流電源５から交番電圧
を印加すると、流入する電流は、第３図に示す等
価回路を分流する。C 1 , R 1 : insulator layer 4 interposed between adjacent electrodes,
Combined capacitance and combined electrical resistance of the dielectric layer 3 and its interface C 2 , C 3 : Capacitance of the dielectric layer 3 directly above the electrodes 1 and 2 (C 2 =C 3 ) R 2 , R 3 : Electrical resistance of dielectric layer 3 directly above electrodes 1 and 2 (R 2 = R 3 ) C 4 : Capacitance of air on dielectric layer 3 between adjacent electrodes 1 and 2 R 4 : Adjacent electrodes 1 and 2 Electrical resistance R 5 of the air on the dielectric layer 3 between adjacent electrodes 1 and 2: Electrical resistance at the interface between the dielectric layer 3 and air between the adjacent electrodes 1 and 2 Electrode terminals of the electric field curtain device shown in Figures 1 and 2 When an alternating voltage is applied to 1a and 2a from an alternating current power supply 5, the inflowing current branches through the equivalent circuit shown in FIG.
また、この等価回路中、温度および湿度の影響
を特に大きく受けるのは、容量C4および抵抗R4，
R5である。一方、抵抗R1，R2，R3およびR4の電
気抵抗値は著しく大であり、コンデンサC1およ
びC4のインピーダンスも大である。 In addition, in this equivalent circuit, the capacitance C 4 and the resistance R 4 are particularly affected by temperature and humidity.
It is R5 . On the other hand, the electrical resistance values of resistors R 1 , R 2 , R 3 and R 4 are extremely large, and the impedance of capacitors C 1 and C 4 is also large.
それ故に、これらを無視すると、第３図の単価
回路は第４図に示すように簡略化され、抵抗R5
が界面吸着水層の電気抵抗を代表すると考えるこ
とができる。 Therefore, if these are ignored, the unit cost circuit in Figure 3 is simplified as shown in Figure 4, and the resistor R 5
can be considered to represent the electrical resistance of the interfacially adsorbed water layer.
すなわち、誘電体層３の表面に界面吸着水の層
が生ずると、等価抵抗R5の値が低下する。この
ために、微小粒子が誘電体層３に接触しても、十
分な摩擦帯電を得ることができなくなる。 That is, when a layer of interfacially adsorbed water is formed on the surface of the dielectric layer 3, the value of the equivalent resistance R5 decreases. For this reason, even if the microparticles come into contact with the dielectric layer 3, sufficient triboelectric charging cannot be obtained.
一方、前記界面吸着水の層は、一種の静電シー
ルド層として作用するので、前記界面吸着水層の
電気抵抗R5が低下すると、印加電圧が一定の場
合は、誘電体層３の外側に発生される不平等電界
の強度が弱くなる。 On the other hand, the interfacially adsorbed water layer acts as a kind of electrostatic shield layer, so when the electrical resistance R 5 of the interfacially adsorbed water layer decreases, if the applied voltage is constant, the outer side of the dielectric layer 3 The intensity of the generated unequal electric field becomes weaker.
以上の２つの理由により、電界カーテン装置の
各線状電極に一定の交流電圧を印加する場合に
は、湿度の増加に伴なつて電界カーテン効果（例
えば、微小粒子または帯電粒子の搬送能力）が低
下するという欠点がある。そして、この傾向は、
絶対湿度が一定であれば温度が低いほど著しくな
る。 For the above two reasons, when applying a constant AC voltage to each linear electrode of an electric field curtain device, the electric field curtain effect (for example, the ability to transport fine particles or charged particles) decreases as the humidity increases. There is a drawback that it does. And this trend is
If the absolute humidity is constant, the lower the temperature, the more pronounced the problem will be.
前述の欠点を改善するために、印加電圧を常に
高く設定して高湿度の場合の電界カーテン効果を
保証しようとすると、流入電流が大となり、電極
間放電を生じ易くなり、電界カーテン装置を損傷
したり、寿命を短かくしてしまう欠点がある。 In order to improve the above-mentioned drawbacks, if we try to guarantee the electric field curtain effect in the case of high humidity by always setting the applied voltage high, the inflow current becomes large, which tends to cause interelectrode discharge and damage the electric field curtain device. There are disadvantages that can shorten the lifespan.
本発明の目的は、電界カーテン効果を常に一定
に保持することのできる電界カーテン制御装置を
提供することにある。 An object of the present invention is to provide an electric field curtain control device that can always maintain a constant electric field curtain effect.
前記の目的を達成するために、本発明において
は、使用環境の湿度と温度、ならびに電界カーテ
ン装置への流入電流の間に一定の関係がある点に
着目し、前記流入電流と使用環境温度とから、電
界カーテン装置の印加電圧の目標値を演算し、実
際の印加電圧を前記目標値に調整するようにして
いる。 In order to achieve the above object, the present invention focuses on the fact that there is a certain relationship between the humidity and temperature of the usage environment and the current flowing into the electric field curtain device. From this, a target value of the voltage applied to the electric field curtain device is calculated, and the actual applied voltage is adjusted to the target value.
第５図は本発明の一実施例のブロツク図であ
る。１０は第１図のような構成を有する電界カー
テン装置、１１は前記電界カーテン装置１０に交
流電圧を印加するための電圧可変型交流電源、１
２は前記電界カーテン装置１０に流入する電流を
測定する電流検出装置である。 FIG. 5 is a block diagram of one embodiment of the present invention. 10 is an electric field curtain device having a configuration as shown in FIG. 1; 11 is a variable voltage AC power source for applying an AC voltage to the electric field curtain device 10; 1;
Reference numeral 2 denotes a current detection device that measures the current flowing into the electric field curtain device 10.
１３は電界カーテン装置１０（の誘電体層）の
温度を測定する温度検出装置、１４は電流検出装
置１２および温度検出装置１３の各出力信号を入
力されて、印加電圧目標値を出力する電圧演算回
路、１５は電界カーテン装置１０に印加される交
流電圧−すなわち、電圧可変型交流電源１１の出
力電圧を測定する電圧検出装置である。 13 is a temperature detection device that measures the temperature of (the dielectric layer of) the electric field curtain device 10; 14 is a voltage calculation device that receives the output signals of the current detection device 12 and the temperature detection device 13 and outputs an applied voltage target value; A circuit 15 is a voltage detection device that measures the AC voltage applied to the electric field curtain device 10, that is, the output voltage of the variable voltage AC power supply 11.
また、１６は電圧検出装置１５の出力信号を前
記印加電圧目標値と比較し、その偏差に応じて、
電圧制御信号を電圧可変型交流電源１１に供給
し、前記偏差を０にするための比較演算回路であ
る。 Further, 16 compares the output signal of the voltage detection device 15 with the applied voltage target value, and according to the deviation,
This is a comparison calculation circuit that supplies a voltage control signal to the voltage variable AC power supply 11 and makes the deviation zero.
第６図は、第１表のような条件で作成された第
１図の電界カーテン装置の、線状電極間に50Hz、
40KVの交流電圧を印加したときの、電界カーテ
ン装置への流入電流と絶対湿度との関係を、温度
をパラメータとして実施した結果を示すものであ
る。 Figure 6 shows the electric field curtain device of Figure 1, which was created under the conditions shown in Table 1, with a 50 Hz frequency between the linear electrodes.
This figure shows the relationship between the current flowing into the electric field curtain device and the absolute humidity when an AC voltage of 40 KV is applied, using temperature as a parameter.
第１表
線状電極１，２の長さ ｌ＝300mm
線状電極１，２の配列幅 Ｗ＝100mm
線状電極１，２の幅 ａ＝0.3mm
線状電極１，２の隣接電極間隔 ｂ＝２mm
誘電体層３の厚さ 0.1mm
また、第７図は、絶対湿度に対する電界カーテ
ン効果を、印加電圧をパラメータとして表わした
ものである。 Length of first surface linear electrodes 1 and 2 l = 300 mm Arrangement width of linear electrodes 1 and 2 W = 100 mm Width of linear electrodes 1 and 2 a = 0.3 mm Spacing between adjacent electrodes of linear electrodes 1 and 2 b =2 mm Thickness of dielectric layer 3 0.1 mm Further, FIG. 7 shows the electric field curtain effect on absolute humidity using the applied voltage as a parameter.
第６図および第７図の関係を電圧演算回路１４
に予め記憶させておく。 The voltage calculation circuit 14 calculates the relationship shown in FIG. 6 and FIG.
be memorized in advance.
そして、まず電流検出装置１２および温度検出
装置１３からの電流信号および温度信号から、第
６図の関係を参照して、その時の絶対湿度を推定
する。さらに、その結果と所要の電界カーテン効
果から、第７図の関係を参照して、印加電圧目標
値を決定し、これを比較演算回路１６に供給す
る。 First, the absolute humidity at that time is estimated from the current signal and temperature signal from the current detection device 12 and temperature detection device 13, with reference to the relationship shown in FIG. Further, based on the result and the required electric field curtain effect, an applied voltage target value is determined with reference to the relationship shown in FIG. 7, and this is supplied to the comparison calculation circuit 16.
比較演算回路１６では、電圧検出装置１５によ
る印加電圧実測値と前記目標値との偏差を演算
し、その偏差が０になるような電圧制御信号を、
電圧可変型交流電源１１に供給して所要の電圧を
出力させる。 The comparison calculation circuit 16 calculates the deviation between the actual measurement value of the voltage applied by the voltage detection device 15 and the target value, and generates a voltage control signal such that the deviation becomes 0.
The voltage is supplied to the variable voltage AC power supply 11 to output the required voltage.
以上のように本発明によれば温度、湿度などの
環境条件が変動しても、それに応じて印加電圧を
増減し、常に設定した電界カーテン効果を安定に
得ることができる。したがつて、高湿度時に電界
カーテン効果が不足することもなく、また低湿度
時に過剰な電界効果を生じたり、あるいは過大電
圧が印加されて電界カーテン装置の寿命を損なつ
たりすることもなくなる。 As described above, according to the present invention, even if environmental conditions such as temperature and humidity change, the applied voltage can be increased or decreased accordingly, and the set electric field curtain effect can always be stably obtained. Therefore, the electric field curtain effect will not be insufficient when the humidity is high, and the life of the electric field curtain device will not be shortened due to excessive electric field effect or excessive voltage being applied when the humidity is low.
本発明の電界カーテン制御装置は、従来の電界
カーテン装置の使用分野−例えば、電子複写機の
ドラムクリーニング、静電塗装用ブース、静電植
毛、電界ホツパ、電気集塵装置などすべてに適用
可能である。 The electric field curtain control device of the present invention can be applied to all fields in which conventional electric field curtain devices are used, such as drum cleaning of electronic copying machines, electrostatic painting booths, electrostatic flocking, electric field hoppers, and electrostatic precipitators. be.
また、本発明において、電界カーテン装置に印
加する交流電圧は、単相であつても、多相であつ
てもかまわない。 Further, in the present invention, the AC voltage applied to the electric field curtain device may be single-phase or multi-phase.
第１図は本発明の電界カーテン装置の一例を示
す平面図、第２図は第１図の−線にそう断面
拡大図、第３図は第１図の電界カーテン装置の等
価回路図、第４図は第３図において電流が殆んど
流れない部分を省略して簡略化した等価回路図、
第５図は本発明の一実施例のブロツク図、第６図
は電界カーテン装置において、環境温度をパラメ
ータとした場合の絶対湿度対流電流の関係を示す
図、第７図は電界カーテン装置において、印加交
流電圧をパラメータとした場合の絶対湿度と電界
カーテン効果の関係を示す図である。
１……第１極性線状電極群、２……第２極性線
状電極群、３……誘電体層またはエキサイタ層、
４……絶縁体層、５……交流電源、１０……電界
カーテン装置、１１……電圧可変型交流電源、１
２……電流検出装置、１３……温度検出装置、１
４……電圧演算回路、１５……電圧検出装置、１
６……比較演算回路。
FIG. 1 is a plan view showing an example of the electric field curtain device of the present invention, FIG. 2 is an enlarged cross-sectional view taken along the - line in FIG. 1, and FIG. 3 is an equivalent circuit diagram of the electric field curtain device in FIG. Figure 4 is an equivalent circuit diagram simplified by omitting the parts where almost no current flows in Figure 3.
FIG. 5 is a block diagram of an embodiment of the present invention, FIG. 6 is a diagram showing the relationship between absolute humidity and convection current when environmental temperature is used as a parameter in an electric field curtain device, and FIG. 7 is a diagram showing the relationship between absolute humidity and convection current in an electric field curtain device. FIG. 3 is a diagram showing the relationship between absolute humidity and electric field curtain effect when applied AC voltage is used as a parameter. 1... First polar linear electrode group, 2... Second polar linear electrode group, 3... Dielectric layer or exciter layer,
4... Insulator layer, 5... AC power supply, 10... Electric field curtain device, 11... Voltage variable AC power supply, 1
2...Current detection device, 13...Temperature detection device, 1
4... Voltage calculation circuit, 15... Voltage detection device, 1
6... Comparison calculation circuit.
Claims (1)
を有する電界カーテン装置と、相隣る線状電極間
に交流電圧を印加する交流電源と、前記交流電源
から電界カーテン装置へ流入する電流を検知する
装置と、電界カーテン装置の温度を検知する装置
と、検知された電流および温度の信号から、電界
カーテン装置の電界カーテン効果を、設定値にす
るための印加電圧目標値を演算する電圧演算回路
と電界カーテン装置に印加されている電圧を検出
する装置と、電圧検出信号を前記印加電圧目標値
と比較し、その偏差が０となるように、前記交流
電源の出力電圧を制御する手段とを具備したこと
を特徴とする電界カーテン制御装置。1. An electric field curtain device having a large number of linear electrodes arranged substantially parallel to each other, an AC power source that applies an alternating current voltage between adjacent linear electrodes, and an electric field curtain device that A device for detecting the temperature of the electric field curtain device, and a voltage calculation that calculates the applied voltage target value to bring the electric field curtain effect of the electric field curtain device to a set value from the detected current and temperature signals. a device for detecting the voltage applied to the circuit and the electric field curtain device; and means for comparing the voltage detection signal with the applied voltage target value and controlling the output voltage of the AC power source so that the deviation becomes zero. An electric field curtain control device comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12682981A JPS5830360A (en) | 1981-08-14 | 1981-08-14 | Electric field curtain controlling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12682981A JPS5830360A (en) | 1981-08-14 | 1981-08-14 | Electric field curtain controlling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5830360A JPS5830360A (en) | 1983-02-22 |
| JPH02108B2 true JPH02108B2 (en) | 1990-01-05 |
Family
ID=14944940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12682981A Granted JPS5830360A (en) | 1981-08-14 | 1981-08-14 | Electric field curtain controlling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5830360A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60254172A (en) * | 1984-05-31 | 1985-12-14 | Fuji Xerox Co Ltd | Electric field transfer method and transfer device |
| CN113578529B (en) * | 2021-09-30 | 2022-02-18 | 苏州浪潮智能科技有限公司 | Server dust removal method and system and related components |
-
1981
- 1981-08-14 JP JP12682981A patent/JPS5830360A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5830360A (en) | 1983-02-22 |
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