SE416229B - DC SUPPLY LIGHT BAG OVEN - Google Patents

DC SUPPLY LIGHT BAG OVEN

Info

Publication number
SE416229B
SE416229B SE7902178A SE7902178A SE416229B SE 416229 B SE416229 B SE 416229B SE 7902178 A SE7902178 A SE 7902178A SE 7902178 A SE7902178 A SE 7902178A SE 416229 B SE416229 B SE 416229B
Authority
SE
Sweden
Prior art keywords
oven
electrode
bottom contact
circumference
conductors
Prior art date
Application number
SE7902178A
Other languages
Swedish (sv)
Other versions
SE7902178L (en
Inventor
S-E Stenkvist
Original Assignee
Asea Ab
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 Asea Ab filed Critical Asea Ab
Priority to SE7902178A priority Critical patent/SE416229B/en
Priority to JP2394580A priority patent/JPS55122387A/en
Priority to DE19803007879 priority patent/DE3007879A1/en
Priority to IT67372/80A priority patent/IT1129418B/en
Priority to GB8008159A priority patent/GB2046560B/en
Priority to US06/129,261 priority patent/US4356340A/en
Publication of SE7902178L publication Critical patent/SE7902178L/en
Publication of SE416229B publication Critical patent/SE416229B/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces
    • F27B3/10Details, accessories or equipment, e.g. dust-collectors, specially adapted for hearth-type furnaces
    • F27B3/12Working chambers or casings; Supports therefor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D11/00Arrangement of elements for electric heating in or on furnaces
    • F27D11/08Heating by electric discharge, e.g. arc discharge
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D11/00Arrangement of elements for electric heating in or on furnaces
    • F27D11/08Heating by electric discharge, e.g. arc discharge
    • F27D11/10Disposition of electrodes
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B7/00Heating by electric discharge
    • H05B7/02Details
    • H05B7/11Arrangements for conducting current to the electrode terminals

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Discharge Heating (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Furnace Details (AREA)

Description

15 20 25 55 f79u21?s-a oz mantel eller vägg, uppdelad i två partier, ett omfattande en del av om- kretsen, bl a den del, åt vilken tilledarna till bottenkontakten och eventuellt elektroden är dragna, vilken består av ferromagznetiskt mate- rial, samt en del, omfattande resten av Omkretsen, bestående av icke- ferromagxzetiskt material. Härigenom erhålles ett osymmetriskt fält lcring - elektroden, vilket motverkar nvssnämnda fält från tilledarna till botten- kontakten och eventuellt elektroden, och ett resulterande fält erhålles kring elektroden, vilket icke förorsakar den tidigare föreliggande sned- ställningen av ljuebågen. man erhåller på detta eat: en symmetrisk, rem, ned riktad ljusbåge och slipper ifrån det ojämna slitaget och de andra ovan nämnda nackdelarna. 15 20 25 55 f79u21? Sa oz jacket or wall, divided into two portions, comprising a part of the circumference, including the part to which the conductors of the bottom contact and possibly the electrode are drawn, which consists of ferromagnetic material, and a part, comprising the rest of the Circumference, consisting of non-ferro-magnetic material. As a result, an asymmetrical field is obtained around the electrode, which counteracts the aforementioned field from the conductors to the bottom contact and possibly the electrode, and a resulting field is obtained around the electrode, which does not cause the previously present skew of the arc. you get on this eat: a symmetrical, strap, downward-directed arc and avoid the uneven wear and the other above-mentioned disadvantages.

- Uppfinningen är närmare illustrerad i bifogade figurer, av vilka fig 1 visar en ljusbågsugn, sedd från sidan, och fig 2 en sektion tvärs igenom samma ljusbågsugl. Ugnen i föreliggande fall, som är likströmsmatad, har en ljusbågselektrod 1, vilken är symmetriskt dragen genom ugnens valv 6.The invention is further illustrated in the accompanying figures, of which Fig. 1 shows an arc furnace, seen from the side, and Fig. 2 a section across the same arc furnace. The furnace in the present case, which is supplied with direct current, has an arc electrode 1, which is symmetrically drawn through the arches 6 of the furnace.

Elektroden är ansluten till en likströmskällas negativa pol och tilledaren till elektroden visas vid 2. Ugnen är även försedd med en aymmetriskt an- ordnad bottenkontakt 7, och även till den är dragna tilledare 3 från lik- strömskällan, anslutna till dennas pluspol. Antalet tilledare är här två stycken, men givetvis kan även andra antal förekomma.The electrode is connected to the negative pole of a direct current source and the conductor to the electrode is shown at 2. The oven is also equipped with an asymmetrically arranged bottom contact 7, and conductors 3 from the direct current source are also connected to it, connected to its positive pole. The number of conductors is two here, but of course other numbers can also occur.

Ugnslcroppen 8 är försedd med en mantel eller vägg, uppdelad i två partier 4, H5. Det ena partiet 4 placeras _symmetriskt kring det parti av ugzskroppen, som är vänt mot tilledarna 2, 3, och detta parti 4 är utfört i ferromagrle- tiskt material. Detta ferrómagzzetiska material kan omfatta olika stor del av ugnslcroppens omkrets, men företrädesvis bör det omfatta mer 180°, . såsom visas i fig 2.The oven body 8 is provided with a jacket or wall, divided into two portions 4, H5. One portion 4 is placed symmetrically around the portion of the ugz body which faces the conductors 2, 3, and this portion 4 is made of ferromagrlic material. This ferromagnetic material may comprise different sizes of the circumference of the furnace body, but preferably it should comprise more than 180 °. as shown in Fig. 2.

Det andra partiet 5 är utfört i icke ferromagzetiskt material, och såsom» _ lämpliga material kan nämnas ferromagnetisk plåt i partiet 4 och rostfri plåt i partiet 5. Partiet 4 komer att verka kortslutande på fältet lcring elektroden 1 och kommer att medföra en osymmetrisk fördelning av detta fält, vilket i' sin tur kommer att motverka fältet från tilledarna 2, 3, vilket eljest skulle medföra nämnda snedställning av ljusbågen. Med ett rätt av- passat hölje eller parti 4 kan detta upphävande bli fullständigt och en helt verktikal ljusbåge kan erhållas. Den omagnetiska delen 5 omfattar i det visade fallet en fjärdedel av Omkretsen, men i princip kan man säga. att denna del kan omfatta mellan en tiondel och hälften av omloretsen,The second portion 5 is made of non-ferromagetic material, and as suitable materials may be mentioned ferromagnetic plate in the portion 4 and stainless steel in the portion 5. The portion 4 will act short-circuiting the field around the electrode 1 and will result in an asymmetrical distribution of this field, which in turn will counteract the field from the conductors 2, 3, which would otherwise lead to said skew of the arc. With a properly fitted housing or portion 4, this cancellation can be complete and a completely vertical arc can be obtained. The non-magnetic part 5 comprises in the case shown a quarter of the circumference, but in principle it can be said. that this part may comprise between one tenth and half of the omloretsen,

Claims (3)

1. ,79e217s-e 3 och det magnetiska partiet 4 således resten av omlcretsen, och bl a den del som är vänd mot tilledama. Man kan eventuellt även komplettera konstruktionen enligt fig 1 och 2 med styrmagzzeter, men i princip bör det gå bra att lösa. problemet även utan förekomst av dylika. Uppfinningen kan varieras på mångahanda sätt inom ramen för nedanstående patentlcrav. PATENTKRAV H1. Likströmsmatad ljusbågsugrz med minst en elektrod (1) och minst en bottemontakt (7), k ä n n e t e c k n a a därav, att ugnsfam har en mantel eller vägg, uppdelad i två. partier (4, 5), ett omfattande en del (4) av omkretsen, bl a. den del, åt vilken tilledazna (2, 5) till botten- kontakten och eventuellt elektroden är dragna, vilken består av. ferro- magletiskt material, samt en del (5), omfattande resten av Omkretsen, bestående av icke-ferromagnetiskt material.1., 79e217s-e 3 and the magnetic portion 4 thus the rest of the circuit, and among other things the part facing the conductors. It is also possible to supplement the construction according to Figs. 1 and 2 with guide magazines, but in principle it should be possible to solve. the problem even without the presence of such. The invention can be varied in many ways within the scope of the following patent claims. CLAIMS H1. DC-supplied arc suction with at least one electrode (1) and at least one bottom socket (7), characterized in that the oven base has a jacket or wall, divided into two. portions (4, 5), comprising a part (4) of the circumference, including the part to which the leads (2, 5) to the bottom contact and possibly the electrode are drawn, which consists of. ferromagnetic material, and a part (5), comprising the rest of the perimeter, consisting of non-ferromagnetic material. 2. Ugz enligt patentlcrav 1, k ä. n n e t e c k n a d därav, att den förstnämnda delen (4) innefattar minst 1800 av Omkretsen och är belägen symmetriskt len-ing bottenkontaktens tilledare.2. Ugz according to claim 1, characterized in that the first-mentioned part (4) comprises at least 1800 of the circumference and is located symmetrically inclined to the conductor of the bottom contact. 3. Ugz enligt patentlcrav 2, k ä n n e t e c k n a. d därav, att botten- kontakten (7) är belägen centralt i ugnens botten.3. An oven according to claim 2, characterized in that the bottom contact (7) is located centrally in the bottom of the oven.
SE7902178A 1979-03-12 1979-03-12 DC SUPPLY LIGHT BAG OVEN SE416229B (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE7902178A SE416229B (en) 1979-03-12 1979-03-12 DC SUPPLY LIGHT BAG OVEN
JP2394580A JPS55122387A (en) 1979-03-12 1980-02-27 Dc arc furnace
DE19803007879 DE3007879A1 (en) 1979-03-12 1980-03-01 ARC OVEN SUPPLIED WITH DC CURRENT
IT67372/80A IT1129418B (en) 1979-03-12 1980-03-10 DIRECT CURRENT ELECTRIC ARC OVEN
GB8008159A GB2046560B (en) 1979-03-12 1980-03-11 Direct current arc furnace
US06/129,261 US4356340A (en) 1979-03-12 1980-03-11 DC Arc furnace having a shielded arc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7902178A SE416229B (en) 1979-03-12 1979-03-12 DC SUPPLY LIGHT BAG OVEN

Publications (2)

Publication Number Publication Date
SE7902178L SE7902178L (en) 1980-09-13
SE416229B true SE416229B (en) 1980-12-08

Family

ID=20337507

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7902178A SE416229B (en) 1979-03-12 1979-03-12 DC SUPPLY LIGHT BAG OVEN

Country Status (2)

Country Link
JP (1) JPS55122387A (en)
SE (1) SE416229B (en)

Also Published As

Publication number Publication date
SE7902178L (en) 1980-09-13
JPS55122387A (en) 1980-09-20

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