DE739974C - Vacuum furnace heated by glow discharge, especially annealing and melting furnace - Google Patents

Vacuum furnace heated by glow discharge, especially annealing and melting furnace

Info

Publication number
DE739974C
DE739974C DEB191904D DEB0191904D DE739974C DE 739974 C DE739974 C DE 739974C DE B191904 D DEB191904 D DE B191904D DE B0191904 D DEB0191904 D DE B0191904D DE 739974 C DE739974 C DE 739974C
Authority
DE
Germany
Prior art keywords
furnace
vacuum
glow discharge
heated
melting furnace
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
DEB191904D
Other languages
German (de)
Inventor
Wilhelm Burkhardt
Hellmuth Schwicker
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEB191904D priority Critical patent/DE739974C/en
Application granted granted Critical
Publication of DE739974C publication Critical patent/DE739974C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/32—Gas-filled discharge tubes
    • H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
    • H01J37/32018—Glow discharge

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Furnace Details (AREA)

Description

Mittels Glimmentladung beheizter Vakuumofen, insbesondere Glüh- und Schmelzofen Beim Offnen von mit Hochspannung gespeisten ''akuuinöfen kann es vorkommen, daß die Stromversorgung noch vorhanden ist, wenn Arbeiten am oder im Ofen vorgenommen werden sollen, wodurch das Bedienungspersonal gefährdet wird. Durch die beschriebene Vorrichtung soll dieser Nachteil beseitigt und erreicht werden, daß der Ofen nach dem Offner. unter keinen Umständen Hochspannung führt.Vacuum furnace heated by means of glow discharge, in particular annealing and Melting furnace When opening a high-voltage powered '' battery-powered furnace, it can happen that that the power supply is still available when work is carried out on or in the furnace should be, whereby the operating personnel is endangered. Through the described Device should eliminate this disadvantage and achieve that the furnace after the opener. does not carry high voltage under any circumstances.

Die Erfindung betrifft einen mittels Glimmentladung beheizten Vakuumofen, insbesondere Glüh- und Schmelzofen, welcher sich dadurch auszeichnet, daß mit dem Vakuunlolfenraum ein Kontaktvakuumbaromeeter verbunden ist, welches bei Erreichen eines einstellbaren Unterdruckes den Stromkreis für die Betätigung des Hauptofenv erso,rgungsschützes schließt. Steigt andererseits der Druck im Ofen über eine gewisse Größe, z. B. durch Abheben der Ofenhaube, so öffnet das V akuumkontaktbarometer den Hilfsstrom-(zreis und das Hauptschftz öffnet sich.The invention relates to a vacuum furnace heated by means of a glow discharge, in particular annealing and melting furnace, which is characterized in that with the A contact vacuum barometer is connected to the vacuum barometer, which when reached an adjustable negative pressure the circuit for the operation of the main furnace erso, rgungsschützes closes. On the other hand, if the pressure in the furnace rises above a certain level Size, e.g. B. by lifting the furnace hood, the vacuum contact barometer opens the auxiliary circuit and the main shaft open.

In der Zeichnung ist die Erfindung an einem Ausführungsbeispiel schematisch nr:her erläutert, und zwar zeigt die Abbildung einen Schnitt durch einen, mittels Glimmentladung beheizten Vakuumofen.In the drawing, the invention is shown schematically in an exemplary embodiment no: here explained, namely the figure shows a section through a, means Glow discharge heated vacuum furnace.

Der Vakuumofen bestellt z. B. aus einer metallischen Bodenplatte i und einer abnellinbaren metallischen Haube 2, einer isoliert eingeführten Elektrode 3 und einem Stutzen .f, an den sich die Vakuumpumpe anschließt. Die Heizung für den Ofen liefert die Stromquelle ; über das Schütz 8 und über die Leitungen 6 und i. Die Leitung 7 stellt dabei mit der Wandung des Ofens in Verbindung. Mit dem Vaktttimofenraum stellt ein Kontaktvakuumbarometer g mit den Kontakten io und i i in Verbindung, die ihrerseits mit einer Hilfsstromquelle 1z über einen S:-halter 13 und eine Relaisspule 14 in Verbindung steht, die bei Unterbrechen des Oueeksilberkontaktes des Kontaktbarometers ohne Strom ist, so daß sich das Hauptschütz 8 mittels der Feder 15 öffnet und den Heizstromkreis unterbricht.The vacuum furnace ordered z. B. from a metallic base plate i and a detachable metallic hood 2, an insulated introduced electrode 3 and a nozzle .f, to which the vacuum pump is connected. The heater for the furnace provides the power source; via the contactor 8 and via the lines 6 and i. The line 7 is connected to the wall of the furnace. With the Vaktttimofenraum puts a contact vacuum barometer g with the contacts io and ii in connection, which in turn is connected to an auxiliary power source 1z via an S: holder 13 and a relay coil 14, which is without power when the Oueeksilberkontaktes of the contact barometer is interrupted, so that the main contactor 8 opens by means of the spring 15 and interrupts the heating circuit.

Claims (1)

PATENTANSPRUCH: Mittels Glimmentladung beheizter X-akuumofen, insbesondere Glüh-undSchmelzofen, dadurch gekennzeichnet, daß mit dein Vakuumofenraum ein Kontaktvakuumbarometer verbunden ist, «-elches bei Cberschreiten des einstellbaren Unterdruckes den Ofenstromkreis durch die Betätigung eines Schützes öffnet.PATENT CLAIM: X-vacuum oven heated by glow discharge, in particular Annealing and melting furnace, characterized in that the vacuum furnace chamber is connected to a contact vacuum barometer is connected, «-which, when the adjustable negative pressure is exceeded, the furnace circuit opens by actuating a contactor.
DEB191904D 1940-09-21 1940-09-21 Vacuum furnace heated by glow discharge, especially annealing and melting furnace Expired DE739974C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB191904D DE739974C (en) 1940-09-21 1940-09-21 Vacuum furnace heated by glow discharge, especially annealing and melting furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB191904D DE739974C (en) 1940-09-21 1940-09-21 Vacuum furnace heated by glow discharge, especially annealing and melting furnace

Publications (1)

Publication Number Publication Date
DE739974C true DE739974C (en) 1943-10-08

Family

ID=7011384

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB191904D Expired DE739974C (en) 1940-09-21 1940-09-21 Vacuum furnace heated by glow discharge, especially annealing and melting furnace

Country Status (1)

Country Link
DE (1) DE739974C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1025234B (en) * 1955-04-25 1958-02-27 Dortmund Hoeder Huettenunion A Further development of a circuit arrangement known per se for extinguishing arc discharges in discharge vessels caused by the reversal of high-current glow discharges, treatment of workpieces

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1025234B (en) * 1955-04-25 1958-02-27 Dortmund Hoeder Huettenunion A Further development of a circuit arrangement known per se for extinguishing arc discharges in discharge vessels caused by the reversal of high-current glow discharges, treatment of workpieces

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