DE1239033B - Electric high frequency plasma jet generator - Google Patents
Electric high frequency plasma jet generatorInfo
- Publication number
- DE1239033B DE1239033B DEN27539A DEN0027539A DE1239033B DE 1239033 B DE1239033 B DE 1239033B DE N27539 A DEN27539 A DE N27539A DE N0027539 A DEN0027539 A DE N0027539A DE 1239033 B DE1239033 B DE 1239033B
- Authority
- DE
- Germany
- Prior art keywords
- jacket
- cap
- gas
- base plate
- plasma jet
- 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
- 239000000463 material Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 3
- 229910052799 carbon Inorganic materials 0.000 claims 3
- 238000004804 winding Methods 0.000 claims 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 1
- 238000001816 cooling Methods 0.000 claims 1
- 239000000110 cooling liquid Substances 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 claims 1
- 239000010949 copper Substances 0.000 claims 1
- 239000012811 non-conductive material Substances 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 238000010891 electric arc Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/30—Plasma torches using applied electromagnetic fields, e.g. high frequency or microwave energy
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B11/00—Heating by combined application of processes covered by two or more of groups H05B3/00 - H05B7/00
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Electromagnetism (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Plasma Technology (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Description
BUNDESREPUBLIK DEUTSCHLANDFEDERAL REPUBLIC OF GERMANY
DEUTSCHESGERMAN
PATENTAMTPATENT OFFICE
Int. Cl.:Int. Cl .:
H05hH05h
DeutscheKl.: 21g-61/00German class: 21g-61/00
Nummer: 1239 033Number: 1239 033
Aktenzeichen: N 27539 VIII c/21;File number: N 27539 VIII c / 21;
Anmeldetag: 27. Oktober 1965Filing date: October 27, 1965
Auslegetag: 20. April 1967Open date: April 20, 1967
Die Erfindung betrifft einen elektrischen Plasmastrahlerzeuger mit einem aus einem nicht elektrisch leitenden hochschmelzenden Werkstoff bestehenden, einseitig offenen Zylindermantel, der in die Arbeitsöffnung einer zylinderförmigen Hochfrequenzspule gleichachsig zu dieser eingesetzt ist und wenigstens einen Einlaß zum Zuführen eines zum Erzeugen einer elektrischen Entladung geeigneten Gases in den vom Mantel umschlossenen Raum aufweist. Solche Plasmastrahlerzeuger dienen zum Erzielen einer Flamme sehr hoher Temperatur beim Schmelzen, Schweißen, Schneiden oder beim Durchführen einer anderen Wärmebehandlung von Werkstoffen.The invention relates to an electric plasma jet generator with one of a non-electric Conductive refractory material consisting of a cylinder jacket open on one side, which is inserted into the working opening of a cylindrical high-frequency coil is used coaxially to this and at least one inlet for supplying one to produce one electrical discharge having suitable gas in the space enclosed by the jacket. Such plasma jet generators serve to achieve a very high temperature flame when melting, welding, Cutting or other heat treatment of materials.
Durch das Zuführen von Gas zu einer elektrischen Lichtbogenentladung zwischen zwei Elektroden entsteht eine Flamme von Gasteilchen hoher Temperatur, die sich in der Bewegungsrichtung des Gases erstreckt und auf dem zu behandelnden Werkstoff auftrifft. Es ist bekannt, eine solche Gasentladung mittels eines Hochfrequenz-Induktionsfeldes aufrecht- ao zuerhalten, ohne daß von der Leitfähigkeit des Gases für den elektrischen Strom zwischen zwei Elektroden Gebrauch gemacht wird, sondern das Gas in einen Leitfähigkeitszustand gebracht wird und in kurzgeschlossenen Führungswegen durch das Induktionsfeld starke elektrische Ströme erzeugt werden (vgl. »Journal of Applied Physics«, Vol. 32, 1961, Nr. 5, S. 821 bis 824).By supplying gas to an electric arc discharge between two electrodes, a flame of high temperature gas particles is created, which extends in the direction of movement of the gas and hits the material to be treated. It is known that such a gas discharge by means of a high-frequency induction field main- ao obtain, without making use of the conductivity of the gas for the electric current between two electrodes, but the gas is brought into a conduction state and short-circuited guide paths by the induction field strong electrical currents are generated (cf. "Journal of Applied Physics", Vol. 32, 1961, No. 5, pp. 821 to 824).
Der Arbeitsraum eines solchen Gasentladungsbrenners ist von einem Isoliermantel aus einem hochschmelzenden Werkstoff umgeben, der seinerseits von mehreren Windungen einer Hochfrequenzspule umgeben ist. Genau wie es bei einer Lichtbogenentladung zwischen Elektroden der Fall ist, werden Mittel verwendet zum Erzeugen einer Entladung, die anfänglich von geringem Umfang sein kann, jedoch infolge der Umwandlung von elektrischer Energie in Wärme größer wird.The working space of such a gas discharge burner is surrounded by an insulating jacket made of a high-melting material, which in turn is surrounded by several turns of a high frequency coil. Just like an arc discharge is the case between electrodes, means are used to generate a discharge which may initially be of small size, but as a result of the conversion of electrical energy into Heat gets bigger.
Durch die Zuführung von Gas regelt man die Größe der Flamme und erzeugt gleichzeitig eine die Wärme isolierende Schicht, welche die Wand des Mantels schützt. Mit der Gasströmung durch den Entladungsbereich ist die Bedingung verbunden, daß diese Gasströmung nicht so stark sein darf, daß Gefahr von Löschen der Entladung besteht, was bedeuten kann, daß die aus diesem Grund beschränkte Gasströmung zum Schutz des Mantels nicht ausreicht. Man begegnet diesem Nachteil dadurch, daß das Gas in einer Wirbelbewegung durch den Mantel durchgeleitet wird, wozu eine tangential gerichtete Zuführung von Gas verwendet wird, so daß eine der Wand entlang fortschreitende Zirkulation entsteht,By supplying gas, the size of the flame is regulated and a die is generated at the same time Heat insulating layer that protects the wall of the jacket. With the gas flow through the Discharge area is linked to the condition that this gas flow must not be so strong that danger of deleting the discharge, which may mean that it is restricted for this reason Gas flow is insufficient to protect the jacket. This disadvantage is countered by the fact that the gas is passed through the jacket in a whirling motion, including a tangentially directed feed of gas is used, so that a progressive circulation is created along the wall,
Elektrischer Hochfrequenz-Plasmastrahlerzeuger Anmelder:Electric high-frequency plasma jet generator Applicant:
N.V. Philips' Gloeilampenfabrieken,
Eindhoven (Niederlande)NV Philips' Gloeilampenfabrieken,
Eindhoven (Netherlands)
Vertreter:Representative:
Dr. H. Scholz, Patentanwalt,
Hamburg 1, Mönckebergstr. 7Dr. H. Scholz, patent attorney,
Hamburg 1, Mönckebergstr. 7th
Als Erfinder benannt:Named as inventor:
Jacob Willem de Ruiter,Jacob Willem de Ruiter,
Anton Willenstein, Eindhoven (Niederlande)Anton Willenstein, Eindhoven (Netherlands)
Beanspruchte Priorität:Claimed priority:
Niederlande vom 31. Oktober 1964 (6 412 703)Netherlands October 31, 1964 (6 412 703)
wodurch eine Strömung aufrechterhalten wird, die der Wand entlang von größerer Dichte ist als im Mittelteil. Es ist einleuchtend, daß auch in diesem Fall der Umfang der Gaszuführung das Verhalten der Entladung und der die Wärme isolierenden Gasschicht, die das Entladungsvolumen vom Mantel getrennt hält, beeinflußt, so daß der erwähnte Nachteil, obwohl in geringerem Maß, bestehenbleibt. Wenn nämlich zur Vergrößerung des spezifischen Wärmeinhalts des Gasentladungsvolumens weniger Gas zugelassen wird, verringert gleichzeitig die Dichte des der Wand entlangzirkulierenden Gases, während im Zusammenhang mit der erhöhten Temperatur im Entladungsbereich das Gegenteil stattfinden müßte.thereby maintaining a flow which is of greater density along the wall than in the Middle part. It is evident that in this case too the extent of the gas supply influences the behavior of the Discharge and the heat-insulating gas layer that separates the discharge volume from the jacket holds, influenced, so that the aforementioned disadvantage, although to a lesser extent, persists. if namely, to increase the specific heat content of the gas discharge volume, less gas is allowed at the same time reduces the density of the gas circulating along the wall, while im In connection with the increased temperature in the discharge area, the opposite would have to take place.
Die Erfindung bezweckt, diesen Nachteil zu vermeiden. Nach der Erfindung wird der Zylindermantel innerhalb der Arbeitsöffnung der Spule um die Zylinderachse gedreht. Durch die auf das Gas einwirkende Zentrifugalkraft wird die Dichte des Gases an der Wand entlang des Mantels unabhängig von der axialen Geschwindigkeit des Gases erhöht und in der Mitte verringert. Durch Regelung der Drehgeschwindigkeit kann der Unterschied in Dichte unabhängig von der axialen Strömungsgeschwindigkeit gewählt werden.The invention aims to avoid this disadvantage. According to the invention, the cylinder jacket rotated around the cylinder axis within the working opening of the coil. By acting on the gas Centrifugal force is independent of the density of the gas on the wall along the mantle the axial velocity of the gas increased and decreased in the middle. By regulating the speed of rotation the difference in density can be independent of the axial flow velocity to get voted.
Die Erfindung wird an Hand der Zeichnung näher erläutert, in der ein Ausführungsbeispiel eines elektrischen Plasmastrahlerzeugers dargestellt ist.The invention is explained in more detail with reference to the drawing, in which an embodiment of an electrical Plasma jet generator is shown.
In dem vom Mantel 1 umschlossenen Raum erfolgt die elektrische Gasentladung, wobei Hoch-The electrical gas discharge takes place in the space enclosed by the jacket 1, with high-
709 550/269709 550/269
Claims (3)
»Journal of Applied Physics«, Vol. 32, 1961, Nr. 5, S. 821 bis 824.Considered publications:
"Journal of Applied Physics", Vol. 32, 1961, No. 5, pp. 821-824.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6412703A NL6412703A (en) | 1964-10-31 | 1964-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1239033B true DE1239033B (en) | 1967-04-20 |
Family
ID=19791361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEN27539A Pending DE1239033B (en) | 1964-10-31 | 1965-10-27 | Electric high frequency plasma jet generator |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3340415A (en) |
| AT (1) | AT251131B (en) |
| BE (1) | BE671668A (en) |
| CH (1) | CH438518A (en) |
| DE (1) | DE1239033B (en) |
| FR (1) | FR1454094A (en) |
| GB (1) | GB1100629A (en) |
| NL (1) | NL6412703A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1764479B1 (en) * | 1968-06-11 | 1972-03-09 | Humphreys Corp | HIGH FREQUENCY PLASMA GENERATOR |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1112935A (en) * | 1965-09-24 | 1968-05-08 | Nat Res Dev | Improvements in plasma arc devices |
| DE1514322C3 (en) * | 1965-11-12 | 1974-06-06 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Circuit arrangement for igniting and operating a high-frequency induction plasma torch |
| US3426233A (en) * | 1965-12-13 | 1969-02-04 | Vitro Corp Of America | Plasma stabilization by rotation of arc discharge tube |
| US5012158A (en) * | 1986-07-25 | 1991-04-30 | National Research Institute For Metals | Plasma CVD apparatus |
| CN1045949C (en) * | 1995-02-22 | 1999-10-27 | 中国石油化工总公司 | Method and apparatus for producing cyclopentadience by depolymerizing dicyclopentadience |
| FR2860123B1 (en) * | 2003-09-19 | 2005-11-11 | Cit Alcatel | INDUCTIVE THERMAL PLASMA TORCH |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH360733A (en) * | 1958-07-16 | 1962-03-15 | Patelhold Patentverwertung | Electron tube |
| US3157055A (en) * | 1964-03-17 | 1964-11-17 | Gustav K Medicus | Variable linear positioner |
-
1964
- 1964-10-31 NL NL6412703A patent/NL6412703A/xx unknown
-
1965
- 1965-10-19 US US498053A patent/US3340415A/en not_active Expired - Lifetime
- 1965-10-27 DE DEN27539A patent/DE1239033B/en active Pending
- 1965-10-28 AT AT976665A patent/AT251131B/en active
- 1965-10-28 CH CH1491665A patent/CH438518A/en unknown
- 1965-10-28 FR FR36457A patent/FR1454094A/en not_active Expired
- 1965-10-28 GB GB45719/65A patent/GB1100629A/en not_active Expired
- 1965-10-29 BE BE671668A patent/BE671668A/xx unknown
Non-Patent Citations (1)
| Title |
|---|
| None * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1764479B1 (en) * | 1968-06-11 | 1972-03-09 | Humphreys Corp | HIGH FREQUENCY PLASMA GENERATOR |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1454094A (en) | 1966-07-22 |
| AT251131B (en) | 1966-12-12 |
| NL6412703A (en) | 1966-05-02 |
| GB1100629A (en) | 1968-01-24 |
| BE671668A (en) | 1966-04-29 |
| US3340415A (en) | 1967-09-05 |
| CH438518A (en) | 1967-06-30 |
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