DE205115C - - Google Patents
Info
- Publication number
- DE205115C DE205115C DENDAT205115D DE205115DA DE205115C DE 205115 C DE205115 C DE 205115C DE NDAT205115 D DENDAT205115 D DE NDAT205115D DE 205115D A DE205115D A DE 205115DA DE 205115 C DE205115 C DE 205115C
- Authority
- DE
- Germany
- Prior art keywords
- coal
- crucibles
- muffles
- pieces
- carbon
- 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.)
- Active
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 239000003245 coal Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 2
- 238000005485 electric heating Methods 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 description 4
- 229910010271 silicon carbide Inorganic materials 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N Silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003247 decreasing Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- H05B3/00—Ohmic-resistance heating
Landscapes
- Resistance Heating (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Vorliegende Erfindung betrifft eine Vorrichtung zur elektrischen Beheizung von Muffeln, Tiegeln o. dgl. und besteht darin, daß zur Erzeugung der gewünschten hohen Heiztemperatur der Übergangswiderstand zwischen elektrisch leitenden Körpern aus Kohle, Carborund oder ähnlichem Widerstandsmaterial, die nach Bedarf durch Aussparungen zu Tiegeln, Muffeln oder zur Aufnahme von solchen ausgebildet sind, benutzt wird.The present invention relates to a device for the electrical heating of muffles, Crucibles or the like. And consists in that to produce the desired high heating temperature the contact resistance between electrically conductive bodies made of carbon, carborundum or similar resistance material, which, as required, can be made into crucibles through recesses, Muffles or are designed to accommodate such is used.
In ihrer einfachsten Form ist die neue Einrichtung in Fig. ι .der Zeichnung dargestellt. Zwei Kohlen α sind mit Kupferschienen o. dgl. b versehen, an die die Stromquelle angeschlossen werden kann und die mitsamt einem dritten Körper c aus Kohle durch Schrauben d zusammengehalten werden. Es entsteht alsdann an den Übergangsstellen e eine hohe Temperatur, die bei Kohle bis zu 2000 und 3000 ° C. gesteigert ,werden kann, und bei »silicierter«, d. h. gemäß Patent 173066 behandelter Kohle bis zu 1700 und 18000, da bei der silicierten Kohle das Silicium die Kohle erst bei dieser Temperatur wieder verläßt.In its simplest form, the new device is shown in Fig. Ι. The drawing. Two coals α are provided with copper bars or the like b to which the power source can be connected and which, together with a third body c made of carbon, are held together by screws d. A high temperature then arises at the transition points e , which can be increased up to 2000 and 3000 ° C. for coal, and up to 1700 and 1800 0 for "siliconized" coal, ie up to 1700 and 1800 0 for the siliconized coal Coal The silicon leaves the coal only at this temperature.
Um die Kohlestücke oder Elektroden a vor Verbrennung zu schützen, wird das Ganze mit einer Mischung von amorphem oder auch kristallinischem Carborund oder einem anderen Wärmeschutzstoffe umgeben. Das amorphe Carborundum ist jedoch deswegen vorzuziehen, weil sich dann gleichzeitig durch die hohe Temperatur das Kohlestück c, das als Tiegel oder Muffel dient, mit einem Silicium-Karbidüberzug überziehen läßt (vgl. Patentschrift 173066). Die Kohlestücke c können, je nachdem man es wünscht, als Tiegel ausgebildet werden (Fig. 3) oder als durchgehende Rinne oder Mulde (Fig. 1 und 2). Man kann eine beliebig große Anzahl dieser Tiegel nebeneinanderstellen, wie in Fig. 4 dargestellt ist, oder aber es kann auch noch in diese Kohlestücke je ein Schamottetiegel o. dgl. gestellt werden (Fig. 5 und 6). Die Anordnung kann auch so getroffen werden, daß das ganze System drehbar gelagert wird (Fig. 7).In order to protect the carbon pieces or electrodes a from burning, the whole thing is surrounded with a mixture of amorphous or crystalline carborundum or another heat protection substance. The amorphous carborundum, however, is to be preferred because at the same time due to the high temperature the piece of carbon c, which serves as a crucible or muffle, can be coated with a silicon carbide coating (cf. patent 173066). The coal pieces c can, depending on what you want, be designed as a crucible (Fig. 3) or as a continuous channel or trough (Fig. 1 and 2). Any number of these crucibles can be placed next to one another, as shown in FIG. 4, or a fireclay crucible or the like can also be placed in each of these pieces of coal (FIGS. 5 and 6). The arrangement can also be made so that the entire system is rotatably mounted (Fig. 7).
Die beschriebene Konstruktion hat den Vorteil, daß sie gestattet, beliebige, zu Gebote stehende Spannungen ohne weiteres zu benutzen, ohne daß ein Vorschaltwiderstand, in welchem Energie vernichtet wird, nötig wird. Es ist hierzu nur erforderlich, je nach der Höhe der Spannung durch Vermehrung oder Verminderung der Stücke genügende Übergangswiderstände zu bilden.The construction described has the advantage that it allows arbitrary bidding to use standing voltages without further ado, without a series resistor, in which energy is destroyed becomes necessary. It is only necessary for this, depending on the Level of tension by increasing or decreasing the number of pieces, sufficient contact resistance to build.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE205115C true DE205115C (en) |
Family
ID=467385
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT205115D Active DE205115C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE205115C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE974136C (en) * | 1953-01-08 | 1960-09-22 | Siemens Ag | Method of manufacturing an evaporator |
-
0
- DE DENDAT205115D patent/DE205115C/de active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE974136C (en) * | 1953-01-08 | 1960-09-22 | Siemens Ag | Method of manufacturing an evaporator |
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