DE966038C - Power supply device for an electrical discharge system - Google Patents

Power supply device for an electrical discharge system

Info

Publication number
DE966038C
DE966038C DEG9108A DEG0009108A DE966038C DE 966038 C DE966038 C DE 966038C DE G9108 A DEG9108 A DE G9108A DE G0009108 A DEG0009108 A DE G0009108A DE 966038 C DE966038 C DE 966038C
Authority
DE
Germany
Prior art keywords
power supply
supply device
tubes
amplifier
electrical discharge
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
Application number
DEG9108A
Other languages
German (de)
Inventor
Grayland T Larsen
Arthur T Lausten
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motors Liquidation Co
Original Assignee
Motors Liquidation Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Motors Liquidation Co filed Critical Motors Liquidation Co
Application granted granted Critical
Publication of DE966038C publication Critical patent/DE966038C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/33—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using discharge tubes only
    • 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
    • B03C3/66—Applications of electricity supply techniques
    • B03C3/68—Control systems therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/08—Plant for applying liquids or other fluent materials to objects
    • B05B5/10—Arrangements for supplying power, e.g. charging power
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C23/00—Alloys based on magnesium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C24/00—Alloys based on an alkali or an alkaline earth metal
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C25/00—Alloys based on beryllium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C28/00—Alloys based on a metal not provided for in groups C22C5/00 - C22C27/00
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/003—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for electrostatic apparatus

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Rectifiers (AREA)

Description

AUSGEGEBEN AM 4. JULI 1957ISSUED JULY 4, 1957

G 9108 VIIId/2id2 G 9108 VIIId / 2id 2

Die Erfindung bezieht sich auf eine Verbesserung und Weiterentwicklung der Stromversorgungseinrichtung für ein elektrisches Entladungssystein nach Patent 834 263.The invention relates to an improvement and further development of the power supply device for an electrical discharge system according to patent 834,263.

Das Hauptpatent betrifft ein elektrisches Entladungssystem insbesondere für Verwendung zur Spritzlackierung und enthält einen Hochfrequenzoszillator, einen.Verstärker und einen Gleichrichter, wobei die Verstärkung des Verstärkers durch den zwischen den Entladungselektroden. . fließenden Strom· derart gesteuert wird, daß seine Verstärkung eine umgekehrte Funktion des Stromflusses an der genannten Entladungselektrode ist.The main patent relates to an electrical discharge system in particular for use in Spray painting and contains a high frequency oscillator, an amplifier and a rectifier, wherein the gain of the amplifier by the between the discharge electrodes. . flowing Current · is controlled in such a way that its gain is an inverse function of the current flow at the called discharge electrode.

Die Erfindung hat sich die Aufgabe gestellt, Mittel zu schaffen, mit denen, die Arbeitsweise und der Aufbau der Schaltung vereinfacht sowie die Zahl der notwendigen Röhren vermindert wird.The invention has set itself the task of creating means with which to work and the structure of the circuit is simplified and the number of tubes required is reduced.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Funktionen, des Hochfrequenz-O'SzillatOTS und des Verstärkers in an sich bekannter. Weise von derselben Röhre bzw. denselben Röhren ausgeübt werden.According to the invention, this object is achieved in that the functions of the high-frequency O'SzillatOTS and the amplifier in per se known. Way of the same tube or tubes be exercised.

709 5Ί1Β3 709 5-1-3

Als besonderer Vorteil ist hierbei noch anzusehen, daß im Oszillatorverstärkerteil einheitlich die gleichen Röhrentypen, verwendet werden, wodurch sich, im ganzen gesehen, eine wirtschaftlichere Herstellung der Vorrichtung ergibt.A particular advantage here is that the oscillator amplifier part is uniform the same types of tubes can be used, which, on the whole, results in a more economical production the device results.

Weitera Einzelheiten und Vorteile der Erfindung ergeben sich aus der folgenden Beschreibung an Hand der Zeichnung, welche das Schaltungsbild eines Ausführungsbeispiels, der Erfindung zeigt.Further details and advantages of the invention emerge from the following description Hand drawing showing the circuit diagram of an embodiment of the invention.

Wie dargestellt, ist ein üblicher Netzanschluß mit einem Leistungstransformator 220 vorgesehen, dessen Primärwicklung 221 über die Leitungen 222, 223 an den Netzstecker 224 angeschlossen ist. Die Hochspannungs-Sekundärwicklung 225 des Transformators 220 ist mit den Anoden, einer Vollweggleichrichterröhre 226 verbunden, deren Glühkathoden aus· einer Sekundärwicklung 227 von niedriger Spannung geheizt werden. Eine weitere Wicklung 228 mit niedriger Spannung ist für die Heizung der Glühkathode der übrigen Röhren der Schaltung vorgesehen.As shown, a conventional mains connection with a power transformer 220 is provided, the primary winding 221 of which is connected to the mains plug 224 via the lines 222, 223. the High voltage secondary winding 225 of transformer 220 is connected to the anodes, a full-wave rectifier tube 226 connected, the hot cathodes of which consist of a secondary winding 227 of low voltage. Another low voltage winding 228 is for the Heating of the hot cathode of the remaining tubes of the circuit is provided.

Die Ausgangshochspannung der Gleichrichterröhre 226 wird durch einen Kreis gesiebt, der eine Drossel 229 und Kondensatoren 230, 231 enthält, worauf sie den Anoden und Schirmgittern der vereinigten Oszillatorverstärkerröhren 233 und 234 durch die eine Drossel 2320 enthaltende Leitung232 zugeführt wird.The high voltage output of the rectifier tube 226 is sifted through a circuit containing a choke 229 and capacitors 230, 231, whereupon it is fed to the anodes and screens of the combined oscillator amplifier tubes 233 and 234 through line 232 containing a choke 232 0.

Die Oszillator- und Verstärkerröhren, 233 und 234 sind an ihren Kathoden parallel verbunden und geerdet. Das Schirmgitter der Röhre 233 ist am die Leitung 232 über parallel geschaltete Widerstände 235> 23D angeschlossen, wobei durch den Kondensator 237 für Wechselstrom ein Nebenweg zur Erde gebildet wird. Das Schirmgitter der Röhre 234 ist an die Leitung 232 über parallel geschaltete Widerstände 238, 239 angeschlossen und mit einem Überbrückungskondensator 240 verbunden. Die Anoden der Röhren 233 und 234 sind parallel mit einem abgestimmten Ausgangskreis verbunden, welcher eine Induktivität 241 und Kondensatoren 242, 243 enthält. Die Rückkopplung zum Eingangskreis wird durch eine Spule 244 gebildet, welche mit der Spule 241 induktiv gekoppelt und mit den Steuergittern der Röhren über einen Kondensator 245 verbunden ist.The oscillator and amplifier tubes 16, 233 and 234 are connected in parallel at their cathodes and are grounded. The screen grid of the tube 233 is connected to the line 232 via resistors 2 35> 2 3 D connected in parallel, the capacitor 237 forming a bypass path to earth for alternating current. The screen grid of the tube 234 is connected to the line 232 via resistors 238, 239 connected in parallel and connected to a bypass capacitor 240. The anodes of tubes 233 and 234 are connected in parallel to a matched output circuit which includes an inductor 241 and capacitors 242,243. The feedback to the input circuit is formed by a coil 244 which is inductively coupled to the coil 241 and connected to the control grids of the tubes via a capacitor 245.

Die Induktivität 241 bildet die Primärwicklung eines Aufwärtstransformators, dessen Sekundärwicklung die Induktivität 250- darstellt. Diese ist über eine Meßklinke 251 mit Erde bzw. mit der Eingangsdiode 252 einer üblichen Gleichrichterund Sp annungsverdreifacherstuf β verbunden, welche auch die Dioden 253 und 254 enthält. Die Anode der Diode 254 ist durch eine Leitung 255 an eine Entladungselektrode 4 angeschlossen.The inductance 241 forms the primary winding of a step-up transformer, its secondary winding represents the inductance 250-. This is a measuring pawl 251 with earth or with the Input diode 252 of a conventional rectifier and voltage tripler stage β connected, which also includes diodes 253 and 254. The anode of the diode 254 is connected by a line 255 to a Discharge electrode 4 connected.

Eine Sammelelektrode 6 ist durch die Leitung 256 mit einem Widerstand 257 verbunden* dessen anderes Ende geerdet ist.A collecting electrode 6 is connected by the line 256 to a resistor 257 other end is grounded.

Der zwischen, den Elektroden. 4 und 6 und durch den Widerstand 257 fließende Strom entwickelt eine negative Vorspannung. Diese Spannung wird den parallel geschalteten Steuergittern der Oszillatorröhren, 233 und 234 zugeführt,- so daß die Ausgangsleistung des Oszillators als umgekehrte Funktion des Stromes geregelt wird, welcher in dem die Elektroden 4 und 6 enthaltenden Entladungskreis fließt.The one between, the electrodes. 4 and 6 and current flowing through resistor 257 is developed a negative bias. This voltage is fed to the parallel-connected control grids of the oscillator tubes, 233 and 234 supplied - so that the output power of the oscillator as reverse Function of the current is regulated, which in the discharge circuit containing the electrodes 4 and 6 flows.

Wenn der Strom in dem Entladungskreis zunimmt, wird die an dem Widerstand 257" auftretende negative Spannung im gleichen Verhältnis zunehmen. Diese negative Vorspannung der Steuergitter der Oszillatorröhren setzt die Ausgangsleistung des Oszillators und damit die Spannung an der Elektrode 4 herab, so daß eine Lichtbogenentladung zwischen den Elektroden 4 und 6 verhindert wird,As the current in the discharge circuit increases, that appearing across resistor 257 "" negative voltage increase in the same proportion. This negative bias of the control grid The oscillator tubes set the output power of the oscillator and thus the voltage down the electrode 4 so that an arc discharge between the electrodes 4 and 6 is prevented will,

Claims (2)

Patentansprüche:Patent claims: 1. Stromversorgungseinrichtung für ein elektrisches Entladungssystem, das einen Hochfrequenzoszillator, einen Verstärker und einen Gleichrichter aufweist und bei dem der Verstärker durch den, Entladungsstrom so geregelt wird, daß seine Verstärkung eine umgekehrte Funktion, des. Entladungsstromflusses ist, nach der deutschen Patentschrift 834 263, dadurch gekennzeichnet, daß die Funktionen des Hochfrequenzoszillators' und des Verstärkers in an. sich bekannter Weise von derselben Röhre bzw. denselben Röhren ausgeübt werden.1. Power supply device for an electrical Discharge system comprising a high frequency oscillator, amplifier and rectifier and in which the amplifier by the, discharge current is regulated so that its gain is reversed Function of the. Discharge current flow is, according to the German patent 834 263, thereby characterized in that the functions of the high frequency oscillator and the amplifier in. are known to be exercised by the same tube or tubes. 2. Stromversorgungseinrichtung nach Anspruch i, dadurch gekennzeichnet, daß ein Stromkreis (257) vorgesehen ist, durch welchen die Vorspannung an dem Steuergitter bzw. an den, Steuergittern der Oszillatorröhre bzw. -röhren (233, 234) bei Zunahme des zwischen den Elektroden fließenden Stromes herabgesetzt wird.2. Power supply device according to claim i, characterized in that a Circuit (257) is provided through which the bias on the control grid or on the, control grids of the oscillator tube or tubes (233, 234) as the between the current flowing through the electrodes is reduced. In Betracht gezogene Druckschriften:
USA.-Patentschriften Nr. 2 448 501, 2 533 032.Considered publications:
U.S. Patent Nos. 2,448,501, 2,533,032. Hierzu 1 Blatt Zeichnungen1 sheet of drawings © 609 738/147 12.55 (709571/33 6.57)© 609 738/147 12.55 (709571/33 6.57)
DEG9108A 1951-06-29 1952-06-17 Power supply device for an electrical discharge system Expired DE966038C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US234312A US2767359A (en) 1951-06-29 1951-06-29 High voltage current control

Publications (1)

Publication Number Publication Date
DE966038C true DE966038C (en) 1957-07-04

Family

ID=22880848

Family Applications (2)

Application Number Title Priority Date Filing Date
DEG4242A Expired DE834263C (en) 1951-06-29 1950-10-03 Electrical discharge system and its application to spray painting
DEG9108A Expired DE966038C (en) 1951-06-29 1952-06-17 Power supply device for an electrical discharge system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DEG4242A Expired DE834263C (en) 1951-06-29 1950-10-03 Electrical discharge system and its application to spray painting

Country Status (3)

Country Link
US (1) US2767359A (en)
DE (2) DE834263C (en)
GB (1) GB720418A (en)

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US2960273A (en) * 1958-06-24 1960-11-15 Gen Motors Corp Electrostatic spray painting apparatus
US3156876A (en) * 1960-12-28 1964-11-10 Gen Telephone And Electrics La Blocking oscillator with additional regenerative feedback
US3234450A (en) * 1961-02-06 1966-02-08 Jennings Radio Mfg Corp Lightweight d.c. power supply
US3237068A (en) * 1962-08-09 1966-02-22 Rca Corp Corona generating circuits
US3212211A (en) * 1963-06-21 1965-10-19 Martha W Chapman Insecticidal application device
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US3725738A (en) * 1968-12-17 1973-04-03 V Sokolsky Device for preventing a corona discharge from assuming the form of a spark discharge in electrostatic painting apparatus
US3619720A (en) * 1969-08-28 1971-11-09 Hurletron Inc Electrically assisted printing system
US3763410A (en) * 1971-09-17 1973-10-02 Du Pont Method of treating material by electrical discharge
US3809955A (en) * 1973-03-26 1974-05-07 Graco Inc Safety circuit for electrostatic spray gun
US3787707A (en) * 1973-05-16 1974-01-22 Ransburg Electro Coating Corp Spark detector apparatus and method
US3894272A (en) * 1974-01-14 1975-07-08 Ransburg Corp Method and apparatus for determining incipient grounding of a high voltage electrostatic system
US4168327A (en) * 1976-03-05 1979-09-18 Research Corporation Space-charge controlled electrostatic spraying
US4745520A (en) * 1986-10-10 1988-05-17 Ransburg Corporation Power supply
CA1316980C (en) * 1988-12-27 1993-04-27 Daniel C. Hughey Power supply
DE69414756T3 (en) * 1993-04-08 2005-03-17 Nordson Corp., Westlake Power supply for an electrostatic spray gun
US6144570A (en) * 1997-10-16 2000-11-07 Illinois Tool Works Inc. Control system for a HVDC power supply
US5978244A (en) 1997-10-16 1999-11-02 Illinois Tool Works, Inc. Programmable logic control system for a HVDC power supply
US7267711B2 (en) * 2003-09-23 2007-09-11 Msp Corporation Electrostatic precipitator for diesel blow-by
US20050136733A1 (en) * 2003-12-22 2005-06-23 Gorrell Brian E. Remote high voltage splitter block
GB0612019D0 (en) * 2006-06-16 2006-07-26 Aerstream Technology Ltd Load response circuit
CN102245310A (en) 2008-11-05 2011-11-16 Fmc技术股份有限公司 Gas electrostatic coalescer
JP5762872B2 (en) * 2011-07-29 2015-08-12 住友化学株式会社 Electrostatic spraying equipment

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US2448501A (en) * 1944-06-28 1948-08-31 Ferris Lab Electrical alternating current generator
US2533032A (en) * 1944-06-01 1950-12-05 Ferris Instr Lab Electrical alternating current generation

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Also Published As

Publication number Publication date
GB720418A (en) 1954-12-22
DE834263C (en) 1952-03-17
US2767359A (en) 1956-10-16

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