【０００１】[0001]
【産業上の利用分野】本考案は電気集塵機に残留する残
留電荷を検出する残留電荷検出装置に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a residual charge detecting device for detecting residual charge remaining in an electrostatic precipitator.
【０００２】[0002]
【従来の技術】電気集塵機は、放電極と集塵極から構成
される容量性の負荷に高電圧を印加し、コロナ放電によ
りガス中のダストを補集するものである。高電圧が印加
される電極を有するため、運転後のダストの除去又は集
塵電極のメンテナンス等で作業者が電気集塵機の付近で
作業をする場合には感電に対する安全対策が必要であ
る。2. Description of the Related Art An electrostatic precipitator is one in which a high voltage is applied to a capacitive load composed of a discharge electrode and a dust collecting electrode to collect dust in a gas by corona discharge. Since there is an electrode to which a high voltage is applied, safety measures against electric shock are required when an operator works near the electrostatic precipitator for removing dust after operation or maintaining the dust collecting electrode.
【０００３】こうした電気集塵機の感電防止の安全対策
として従来は、図３に示した様に高電圧発生器３の電源
入力側に並列に表示灯２を接続し、入力スイッチ１の投
入で表示灯を点灯させて高電圧発生器３への通電状態を
表示して作業者への感電防止を促していた。As a safety measure for preventing electric shock of such an electrostatic precipitator, conventionally, as shown in FIG. 3, an indicator lamp 2 is connected in parallel to a power source input side of a high voltage generator 3 and an indicator lamp is turned on by turning on an input switch 1. Was lit to indicate the energization state of the high voltage generator 3 to prompt the worker to prevent electric shock.
【０００４】[0004]
【考案が解決しようとする課題】しかし、電気集塵機は
容量性の負荷である為に、運転終了時に電気集塵機への
高電圧の印加を停止しても、電気集塵機に残留する残留
電荷により放電極を含めた高電圧供給路の電圧は瞬時に
は降下しない。また、集塵対象のガス流に沿って複数段
の集塵室が設けられている構成の電気集塵機では、後段
側の集塵室での高電圧の印加を停止しても、前段側の集
塵室で高電圧を印加している場合には電荷がガス流によ
り後段の集塵室に到達して電圧が誘起される。この為、
高電圧発生器３の電源投入側での電圧印加停止を表示灯
１で確認しても、高電圧発生器３の高電圧出力側に接続
された電気集塵機４自体の残留電荷の有無については何
ら検知手段が設けられておらず、電気集塵機付近での感
電事故を完全に防止して作業の安全性を図ることが難し
かった。However, since the electrostatic precipitator is a capacitive load, even if the application of high voltage to the electrostatic precipitator is stopped at the end of operation, the residual charge remaining in the electrostatic precipitator causes discharge electrodes. The voltage of the high-voltage supply path including is not instantaneously dropped. In addition, in an electrostatic precipitator with a configuration in which multiple stages of dust collection chambers are provided along the gas flow to be collected, even if the application of high voltage to the dust collection chamber on the rear stage is stopped, When a high voltage is applied in the dust chamber, the electric charge reaches the dust collecting chamber in the subsequent stage by the gas flow and the voltage is induced. Therefore,
Even if the stoppage of voltage application at the power-on side of the high-voltage generator 3 is confirmed by the indicator lamp 1, there is nothing about the presence or absence of residual charge in the electrostatic precipitator 4 itself connected to the high-voltage output side of the high-voltage generator 3. Since no detection means was provided, it was difficult to completely prevent an electric shock accident near the electrostatic precipitator and improve work safety.
【０００５】この考案は、電気集塵機に残留する残留電
荷の有無を直接検出して作業上の安全が図れる残留電荷
検出装置を提供することを目的とする。It is an object of the present invention to provide a residual charge detecting device capable of directly detecting the presence or absence of residual charge remaining in an electrostatic precipitator to ensure work safety.
【０００６】[0006]
【課題を解決するための手段】この考案の電気集塵機の
残留電荷検出装置は、電気集塵機と並列に接続された電
圧分割回路と、この電圧分割回路の所定の分圧点と接地
点との間に接続されて電気集塵機の残留電荷を検出する
残留電荷検出器と、残留電荷検出器の検出出力に基づい
て点灯する表示器とを有するものである。SUMMARY OF THE INVENTION A residual charge detecting device for an electrostatic precipitator according to the present invention comprises a voltage dividing circuit connected in parallel with the electrostatic precipitator and a predetermined voltage dividing point and a ground point of the voltage dividing circuit. A residual charge detector connected to the electric charge collector to detect the residual charge of the electrostatic precipitator, and an indicator that lights up based on the detection output of the residual charge detector.
【０００７】[0007]
【作用】電気集塵機に並列に接続された電圧分割回路
で、電気集塵機に残留する電荷による高電圧を適当に分
圧する。分圧点からの取扱い容易な電圧を残留電荷検出
器に印加して、残留電荷の有無を検出して、残留電荷に
応じて表示器を点灯して作業者に知らせる。The voltage dividing circuit connected in parallel to the electrostatic precipitator appropriately divides the high voltage due to the electric charge remaining in the electrostatic precipitator. A voltage that is easy to handle from the voltage dividing point is applied to the residual charge detector to detect the presence or absence of the residual charge, and the indicator is turned on according to the residual charge to notify the operator.
【０００８】[0008]
【実施例】以下、図示するこの考案の実施例に基づいて
説明する。図１はこの考案の残留電荷検出装置を備えた
電気集塵機の実施例の構成を示すブロック図である。図
１の構成において、高電圧発生器３には入力スイッチ１
を介して適切な電源が接続され、出力側に接続された電
気集塵機４にコロナ放電を発生させる所定の高電圧が供
給される。この電気集塵機４に並列に分圧抵抗器９、１
０が接続されており、電気集塵機４の電圧を取扱い容易
な低電圧に変換する。分圧抵抗器９、１０の接続点（分
圧点）と接地間に残留電荷検出器７が接続されている。
残留電荷検出器７は、図２に示した様に電気集塵機４の
運転電圧ＥＰに対して予め設定された残留電荷検出電圧
ＶＬと分圧抵抗器９、１０の接続点と接地間の電圧から
検出した集塵機電圧を比較して、集塵機電圧が残留電荷
検出電圧ＶＬを超えた場合に動作する様に構成されてい
る。残留電荷検出電圧ＶＬの値は、人体に影響の無い充
分低いレベルの電圧を予め設定する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below. FIG. 1 is a block diagram showing the configuration of an embodiment of an electrostatic precipitator equipped with the residual charge detecting device of the present invention. In the configuration of FIG. 1, the high voltage generator 3 has an input switch 1
An appropriate power source is connected via the, and a predetermined high voltage that causes corona discharge is supplied to the electrostatic precipitator 4 connected to the output side. Voltage dividing resistors 9 and 1 are arranged in parallel with the electric dust collector 4.
0 is connected and converts the voltage of the electrostatic precipitator 4 into a low voltage that is easy to handle. The residual charge detector 7 is connected between the connection point (voltage division point) of the voltage dividing resistors 9 and 10 and the ground.
As shown in FIG. 2, the residual charge detector 7 uses the residual charge detection voltage VL preset with respect to the operating voltage EP of the electrostatic precipitator 4 and the voltage between the connection point of the voltage dividing resistors 9 and 10 and the ground. The detected dust collector voltage is compared, and it is configured to operate when the dust collector voltage exceeds the residual charge detection voltage VL. As the value of the residual charge detection voltage VL, a voltage of a sufficiently low level that does not affect the human body is preset.
【０００９】一方、残留電荷検出器７の出力側は残留電
荷検出電圧以上の集塵機電圧を検出している間、ネオン
管、白熱電球等の表示灯２に電力を供給する様に結線さ
れている。On the other hand, the output side of the residual charge detector 7 is connected so as to supply power to the indicator lamp 2 such as a neon tube or an incandescent lamp while detecting the dust collector voltage higher than the residual charge detection voltage. .
【００１０】高電圧発生器３の入力側には電磁接触器
（リレー）５が並列に接続されている。電磁接触器５の
接点６は表示器２と直列に接続され、電源ラインに接続
されている。電気集塵機４の運転時に入力スイッチ１が
投入されて高電圧発生器３に電源電圧が印加されると電
磁接触器５にも電源電圧が印加されて電磁力が発生し、
電磁接触器５の接点が閉じる。すると、表示灯２が電源
に接続されるので表示灯２が点灯して、高電圧発生器３
の動作による電気集塵機４の高電圧の印加状態が表示さ
れる。An electromagnetic contactor (relay) 5 is connected in parallel to the input side of the high voltage generator 3. The contact 6 of the electromagnetic contactor 5 is connected in series with the display 2 and is connected to the power supply line. When the input switch 1 is turned on and the power supply voltage is applied to the high-voltage generator 3 during operation of the electrostatic precipitator 4, the power supply voltage is also applied to the electromagnetic contactor 5, and electromagnetic force is generated.
The contact of the electromagnetic contactor 5 is closed. Then, since the indicator lamp 2 is connected to the power source, the indicator lamp 2 is turned on, and the high voltage generator 3 is turned on.
The high voltage application state of the electrostatic precipitator 4 by the operation of is displayed.
【００１１】また、電気集塵機４に並列接続された分圧
抵抗器９、１０からの分圧電位を受ける残留電荷検出器
７は、この電気集塵機４の通常の動作中も電気集塵機運
転電圧ＥＰが分圧された値が印加されるので、当然動作
して閉じた接点６と並列に表示灯２に電力を供給するよ
うに供電ラインを構成する。Further, the residual charge detector 7 receiving the divided potential from the voltage dividing resistors 9 and 10 connected in parallel to the electrostatic precipitator 4 has the electrostatic precipitator operating voltage EP during the normal operation of the electrostatic precipitator 4. Since the divided voltage is applied, the power supply line is configured to supply the electric power to the indicator lamp 2 in parallel with the contact 6 which is naturally operated and closed.
【００１２】電気集塵機４の運転停止時に入力スイッチ
１が開放されると、高電圧発生器３への電源の供給が停
止され、電磁接触器５への通電も停止されるためにこの
電磁接触器５の接点６は開放されて、この接点側からの
表示灯２への電力の通電は停止される。When the input switch 1 is opened when the operation of the electrostatic precipitator 4 is stopped, the supply of power to the high voltage generator 3 is stopped and the energization of the electromagnetic contactor 5 is also stopped. The contact 6 of 5 is opened, and the power supply from the contact side to the indicator lamp 2 is stopped.
【００１３】しかし、高電圧発生器３への電源電圧の印
加が停止されても電気集塵機４に高電圧が残留している
間は、分圧抵抗器９、１０で分圧された残留高電圧が残
留電荷検出器７で検出され、残留電圧が残留電荷検出電
圧ＶＬを超えていればこの残留電荷検出装置７が作動し
て表示灯２に電力を供給するので表示灯２が点灯し、電
気集塵機４に高電圧が残留していることを表示して注意
を喚起する。However, even when the application of the power supply voltage to the high voltage generator 3 is stopped, while the high voltage remains in the electrostatic precipitator 4, the residual high voltage divided by the voltage dividing resistors 9 and 10 is used. Is detected by the residual charge detector 7, and if the residual voltage exceeds the residual charge detection voltage VL, this residual charge detection device 7 operates and supplies power to the indicator lamp 2, so that the indicator lamp 2 lights up and the A warning is displayed by displaying that high voltage remains on the dust collector 4.
【００１４】このように、入力スイッチ１を開放して電
気集塵機４の運転を停止した場合でも、電気集塵機４の
残留電圧の値が安全範囲を考慮して設定された残留電荷
検出電圧の値よりも大きければ残留電荷検出器７が動作
して表示灯２が点灯し感電事故の防止を図ることができ
る。As described above, even when the input switch 1 is opened to stop the operation of the electrostatic precipitator 4, the value of the residual voltage of the electrostatic precipitator 4 is lower than the value of the residual charge detection voltage set in consideration of the safety range. If it is too large, the residual charge detector 7 operates and the indicator lamp 2 lights up, so that an electric shock accident can be prevented.
【００１５】以上実施例に沿って本考案を説明したが、
本考案はこれらに制限されるものではない。たとえば、
分圧抵抗器９、１０のいずれかにゼナーダイオードを並
列接続し、分割電圧の変化を制限してもよい。表示器２
の位置に制御回路を接続し、２種類の表示器を駆動する
ようにして高電圧と安全電圧を切換表示してもよい。残
留電荷検出器７から同様の２出力を供給してもよい。そ
の他、種々の変更、改良、組み合わせ等が可能なことは
当業者に自明であろう。The present invention has been described above with reference to the embodiments.
The present invention is not limited to these. For example,
A Zener diode may be connected in parallel to any one of the voltage dividing resistors 9 and 10 to limit the change in divided voltage. Display 2
A high voltage and a safety voltage may be switched and displayed by connecting a control circuit to the position and driving two kinds of indicators. The same two outputs may be supplied from the residual charge detector 7. It will be apparent to those skilled in the art that other various modifications, improvements, combinations, and the like can be made.
【００１６】[0016]
【考案の効果】この考案による電気集塵機の残留電荷検
出装置によれば、電気集塵機に並列接続された電圧分割
回路を設け、この電圧分割回路で分圧された電圧を残留
電荷検出器で検出して表示器で表示することで、電気集
塵機の運転停止後でも電気集塵機に高圧電荷が残留して
いるか否かを検出して表示出来るので電気集塵機の感電
事故を防止出来る。According to the residual charge detecting device of the electrostatic precipitator according to the present invention, a voltage dividing circuit connected in parallel with the electrostatic precipitator is provided, and the voltage divided by the voltage dividing circuit is detected by the residual charge detector. By displaying with the indicator, it is possible to detect and display whether or not high voltage electric charge remains in the electrostatic precipitator even after the operation of the electrostatic precipitator is stopped, so that an electric shock accident of the electrostatic precipitator can be prevented.
【図１】本考案の実施例を示すブロック図である。FIG. 1 is a block diagram showing an embodiment of the present invention.
【図２】実施例の残留電荷検出電圧の値を示す概念図で
ある。FIG. 2 is a conceptual diagram showing a value of a residual charge detection voltage according to the embodiment.
【図３】従来例の構成を示すブロック図である。FIG. 3 is a block diagram showing a configuration of a conventional example.
１ 入力スイッチ ２ 表示灯 ３ 高電圧発生器 ４ 電気集塵機 ５ 電磁接触器（リレー） ６ 接点 ７ 残留電荷検出器 ９ 分圧抵抗器 １０ 分圧抵抗器 1 Input switch 2 Indicator light 3 High voltage generator 4 Electrostatic precipitator 5 Electromagnetic contactor (relay) 6 Contact 7 Residual charge detector 9 Voltage dividing resistor 10 Voltage dividing resistor
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3592391UJP2509117Y2 (en) | 1991-05-21 | 1991-05-21 | Residual charge detection device for electric dust collector |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3592391UJP2509117Y2 (en) | 1991-05-21 | 1991-05-21 | Residual charge detection device for electric dust collector |
| Publication Number | Publication Date |
|---|---|
| JPH0570655U JPH0570655U (en) | 1993-09-24 |
| JP2509117Y2true JP2509117Y2 (en) | 1996-08-28 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3592391UExpired - LifetimeJP2509117Y2 (en) | 1991-05-21 | 1991-05-21 | Residual charge detection device for electric dust collector |
| Country | Link |
|---|---|
| JP (1) | JP2509117Y2 (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5593685B2 (en)* | 2009-11-26 | 2014-09-24 | パナソニック株式会社 | Air purifier |
| JP6364616B2 (en)* | 2014-05-29 | 2018-08-01 | パナソニックＩｐマネジメント株式会社 | Electric dust collector |
| Publication number | Publication date |
|---|---|
| JPH0570655U (en) | 1993-09-24 |
| Publication | Publication Date | Title |
|---|---|---|
| US5485059A (en) | Lighting circuit for vehicular discharge lamp | |
| JP3729228B2 (en) | Electric leakage prevention control device for air conditioner for electric vehicle | |
| US4333049A (en) | Inrush current measuring apparatus with instantaneous power interruption device | |
| US4065750A (en) | Low tire pressure warning circuit for a tractor/trailer combination | |
| EP0883816A1 (en) | Method of and circuit for testing an electrical actuator drive stage | |
| JP7465255B2 (en) | Active discharge system for electric or hybrid vehicles | |
| JP2509117Y2 (en) | Residual charge detection device for electric dust collector | |
| US6333568B1 (en) | Switching arrangement and process for switching off an electric energy source of a vehicle | |
| KR100799496B1 (en) | Vehicle sensor protection device | |
| US4065751A (en) | Warning circuit for a tractor/trailer combination | |
| EP0017431B1 (en) | Direction indicating apparatus for vehicles | |
| CN109720208B (en) | Feedback energy control method, device, vehicle and computer readable storage medium | |
| JPS6457056A (en) | Refrigeration cycle device | |
| JP3090819U (en) | Vehicle battery charger with automatic detection switching | |
| KR0139312B1 (en) | Display device for abnormal vacuum pump of car | |
| JPH0142051Y2 (en) | ||
| JPH01178070A (en) | Vacuum motor pump motor controller | |
| KR100422503B1 (en) | Lamp state display apparatus for a car | |
| KR910002456B1 (en) | Voltage relay | |
| JP3659113B2 (en) | Electric dust collector and its abnormality detection method. | |
| JPH03169359A (en) | Electric precipitator | |
| JPH05333121A (en) | Charge and discharge display circuit | |
| KR100219438B1 (en) | stop-timming control apparatus of break motor | |
| JPH07143657A (en) | Ground fault display device | |
| JPS6116761Y2 (en) |
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) | Free format text:JAPANESE INTERMEDIATE CODE: A01 Effective date:19960402 |