DE858744C - Procedure for heating goods in a high-frequency field - Google Patents

Procedure for heating goods in a high-frequency field

Info

Publication number
DE858744C
DE858744C DES20725A DES0020725A DE858744C DE 858744 C DE858744 C DE 858744C DE S20725 A DES20725 A DE S20725A DE S0020725 A DES0020725 A DE S0020725A DE 858744 C DE858744 C DE 858744C
Authority
DE
Germany
Prior art keywords
substances
frequency field
heating
added
goods
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
DES20725A
Other languages
German (de)
Inventor
Hans Dr-Ing Zenneck
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DES20725A priority Critical patent/DE858744C/en
Application granted granted Critical
Publication of DE858744C publication Critical patent/DE858744C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/12—Dielectric heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0811—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using induction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/0058—Liquid or visquous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/251—Particles, powder or granules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/253—Preform
    • B29K2105/256—Sheets, plates, blanks or films

Landscapes

  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Toxicology (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • General Induction Heating (AREA)
  • Treatment Of Fiber Materials (AREA)

Description

Verfahren beim Erhitzen von Gut im Hochfrequenzfeld Das Erhitzen von Gut mit hohen dielektrischen Verlusten im Hochfrequenzfeld bereitet im allgemeinen keine grundsätzlichen Schwierigkeiten.Method of heating material in a high-frequency field The heating of Generally well prepared with high dielectric losses in the high frequency field no fundamental difficulties.

Stoffen, die sich im Hochfrequenzfeld verEältnismäßig langsam erwärmen, Beimengungen zuzufügen, die eine schnellere Erwärmung im Hochfrequenzfeld hervorrufen, ist bereits früher vorgeschlagen worden; beispielsweise ist dies beim Vulkanisieren von Gummi bekannt. Solche Beimengungen dürfen aber entweder nur von einer solchen prozentualen Menge oder von solcher Art sein, daß sie in dem Gut nicht stören bzw. dieses nicht nachteilig verändern. Diese Bedingungen lassen sich oft nicht erfüllen, vor allem wenn verbleibende Beimengungen nicht erwünscht oder so-. gar unzulässig sind. Auch bei dem Verfahren nach der Erfindung werden beim Erhitzen von Gut im Hochfrequenzfeld dem Gut Stoffe beigefügt, die sich im Hochfrequenzfeld stärker erwärmen als das Gut. Erfindungsgemäß werden jedoch diese Stoffe nach erfolgter Erhitzung aus dem Gut wieder ausgeschieden. Um eine schnellere und gleichmäßigere Erhitzung zu erreichen, empfiehlt sich eine feine Verteilung der hinzugefügten Stoffe in dem zu erhitzenden Gut, wobei es gleichgültig ist, ob dieses flüssig oder fest ist, wesentlich ist nur, daß die beigemengten Stoffe von solcher Art sind, daß sie keine unerwünschte Verbindung während des Erhitzens eingehen.Substances that heat up relatively slowly in the high-frequency field, Add admixtures that cause faster heating in the high-frequency field, has been proposed earlier; this is for example the case of vulcanization known from rubber. Such admixtures may, however, either only from one such percentage amount or be of such a nature that they do not interfere with or interfere with the property. do not change this disadvantageously. These conditions can often not be met, especially if remaining admixtures are not desired or something. inadmissible at all are. Also in the method according to the invention when heating good in the High-frequency field added to the good substances that are stronger in the high-frequency field warm as the good. According to the invention, however, these substances are after Heating excreted from the property. To be faster and more even To achieve heating, a fine distribution of the added substances is recommended in the material to be heated, regardless of whether it is liquid or solid is, it is only essential that the added substances are of such a nature that they do not form any undesired compound during heating.

Bei Stoffen, die sich durch Sieben oder ähnliche Trennverfahren voneinander trennen lassen, können die hinzugefügten Stoffe von anderer Teilchengröße, also größer oder kleiner als die des Gutes, gewählt werden. Dieses Verfahren kann z. B. vor- teilhaft bei Getreide und Hülsenfrüchten, Faserstoffen in Form von Wolle und Geweben angewendet werden. In the case of substances that are separated from one another by sieving or similar separation processes let separate, the added substances can be of different particle size, so larger or smaller than that of the goods. This method can e.g. B. before partaking of grain and legumes, fiber in Form of wool and fabrics are applied.

Auch bei breiförmigem Gut ist das Verfahren nach der Erfindung ebenso wie bei festem Gut größeren Ausmaßes anwendbar: Beispielsweise können feste Platten aus einem Stoff, der sich im Hochfrequenzfeld schlecht erwärmt, erfindungsgemäß derart erhitzt werden, daß eine Mehrzahl solcher Platten in einem Stapel aufeinandergelegt, in das Hochfrequenzfeld gebracht wird und daß zwischen je zwei dieser Gutplatten eine Hilfsplatte aus einem sich stärker erwärmenden Stoff gelegt wird, dieses ist z. B. bei Vulkanifiberpliatten u. dlgl. möglich. The method according to the invention is also the same for pulpy material as applicable to solid goods of larger dimensions: For example, solid plates made of a substance that heats up poorly in a high-frequency field, according to the invention are heated in such a way that a plurality of such plates are placed one on top of the other in a stack, is brought into the high frequency field and that between each two of these Gutplatten an auxiliary plate made of a more warming material is placed, this is z. B. with Vulkanifiberpliatten and the like. possible.

Die beigefügten Stoffe können aber auch die Form durchbrochener Rörper haben, z. B. in Form von Kämmen oder Bürsten. Diese haben den Vorteil, daß sie einfach und schnell eingesetzt und wieder entfernt werden können, und außerdem gewährleisten sie eine gleichmäßige Verteilung des beigefügten Hilfsstoffes auf das zu behandelnde Gut. Solche Einsetzkörper können besonders bei der Erhitzung von Gut in flüssiger oder pulvriger Form, wie Mehlen, Flüssigkeitere und ähnlichem, mit Vorteil verwendet werden. The attached fabrics can also take the form of openwork bodies have e.g. B. in the form of combs or brushes. These have the advantage that they are simple and can be quickly inserted and removed, and also ensure they ensure an even distribution of the added auxiliary material on the treated area Good. Such insert bodies can be used especially when heating material in liquid or powdery form such as flours, liquids and the like are used to advantage will.

In vielen Fällen können auch ferromagnetische Beimengungen, die sich in einem Hochfrequenzfeld durch die in ihnen entstehenden Wirbelströme erhitzen, verwendet werden, die anschließend an die Behandlung durch magnetische Einwirkung wieder herausgezogen werden können. Die Form der beigemengten ferromagnetischen Stoffe wird von Uberlegungen der Zweckmäßigkeit bestimmt, besonders Fragen der Dauer, der Geschwindigl<eit und der Höhe der Erhitzung. So können z. B. mit Vorteil Beimengungskörper in körniger Form aus einem nicht magnetischen, sich stark erwärmenden Stoff hergestellt und lediglich zu dem Zweck, sie später mittels Elektromagnets od. dgl. aussdiei den zu können, mit magnetischen, an ihnen haftenden Stoffteilchen versehen werden. In many cases there can also be ferromagnetic additions heat in a high-frequency field due to the eddy currents generated in them, can be used following the treatment by magnetic action can be pulled out again. The shape of the admixed ferromagnetic Substances are determined by considerations of expediency, especially questions of duration, the speed and the amount of heating. So z. B. with advantage Additive body in granular form from a non-magnetic, strongly warming Fabric made and only for the purpose of later using an electromagnet od. The like. Aussdiei to be able to use magnetic particles of matter adhering to them be provided.

Mit den erörterten Beispielen sind die Anwendungs- und Durchführungsmöglichkeiten des Verfahrens nach der Erfindung noch nicht erschöpft, vor allem wird auf die Vielzahl der Varianten hingewiesen, aus denen entspredhend} den vorliegenden Betrilebsverhältnissen jeweils die günstigste ausgewählt werden kann, ohne daß damit die anderen Formen nicht auch anwendbar wären. With the examples discussed are the application and implementation options of the method according to the invention has not yet been exhausted, especially on the large number of the variants from which corresponding} the present operating conditions the cheapest can be selected in each case without affecting the other forms would not also be applicable.

Claims (6)

PATENTANSPRÜCHE: I. Verfahren beim Erhitzen von Gut im Hochfrequenzfeld, wobei dem zu erhitzenden Gut Stoffe beigefügt sind, die sich im Hochfrequenzfeld stärker erwärmen als das Gut, dadurch gekennzeichnet, daß die beigefügten Stoffe nach erfolgter Erhitzung aus dem Gut wieder ausgeschieden werden. PATENT CLAIMS: I. Method for heating material in a high-frequency field, whereby substances are added to the material to be heated, which are located in the high-frequency field heat more than the goods, characterized in that the attached substances be excreted from the goods after heating has taken place. 2. Verfahren nach Anspruch I, dadurch gekennzeichnet, daß die sich im Hochfrequenzfeld stärker erwärmenden Stoffe in feinverteilter Form beigemengt werden. 2. The method according to claim I, characterized in that the In the high-frequency field, substances that heat up more strongly are added in finely divided form will. 3. Verfahren nach Anspruch I, dadurch gekennzeichnet, daß als Beimengungen Stoffe verwendet werden, die eine andere Teilchengröße als das zu behandelnde Gut haben. 3. The method according to claim I, characterized in that as admixtures Substances are used that have a different particle size than the material to be treated to have. 4. Verfahren nach Anspruchs, dadurch gekennzeichnet, daß als Beimengungen Stoffe verwendet werden, die aus durchbrochenen Körpern, z. B. in Form von Kämmen. oder Bürsten, bestehen. 4. The method according to claim, characterized in that as admixtures Fabrics are used that consist of openwork bodies, e.g. B. in the form of combs. or brushes. 5. Verfahren nach Anspruch I und 2, dadurch gekennzeichnet, daß die beigemengten Stoffe durch Sieben ausgeschieden werden. 5. The method according to claim I and 2, characterized in that the added substances are eliminated by sieving. 6. Verfahren nach Anspruch I, gekennzeichnet durch die Beimengung ferromagnetischer Stoffe, die vorzugsweise magnetisch wieder ausgeschieden werden 6. The method according to claim I, characterized by the addition ferromagnetic substances, which are preferably removed again magnetically
DES20725A 1950-11-01 1950-11-01 Procedure for heating goods in a high-frequency field Expired DE858744C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES20725A DE858744C (en) 1950-11-01 1950-11-01 Procedure for heating goods in a high-frequency field

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES20725A DE858744C (en) 1950-11-01 1950-11-01 Procedure for heating goods in a high-frequency field

Publications (1)

Publication Number Publication Date
DE858744C true DE858744C (en) 1952-12-08

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1009745B (en) * 1953-03-09 1957-06-06 Robert Zeisberg Dipl Ing Method and device for treating catalysts or absorbents
DE1042791B (en) * 1955-05-02 1958-11-06 Mannesmann Ag Process for the production of molded bodies, e.g. B. mats, sheets, pipes and. Like. Made of mineral fibers, z. B. slag wool coated with synthetic resins or thermoplastics that can be hardened in the heat
DE1094385B (en) * 1958-08-22 1960-12-08 Emil Vogel Ges Mit Beschraenkt Process for the production of plastic foams
DE19818605C1 (en) * 1998-04-20 1999-12-23 Mannesmann Ag Microwave heating and plasticizing of plastic granules fed to pressure injection molding machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1009745B (en) * 1953-03-09 1957-06-06 Robert Zeisberg Dipl Ing Method and device for treating catalysts or absorbents
DE1042791B (en) * 1955-05-02 1958-11-06 Mannesmann Ag Process for the production of molded bodies, e.g. B. mats, sheets, pipes and. Like. Made of mineral fibers, z. B. slag wool coated with synthetic resins or thermoplastics that can be hardened in the heat
DE1094385B (en) * 1958-08-22 1960-12-08 Emil Vogel Ges Mit Beschraenkt Process for the production of plastic foams
DE19818605C1 (en) * 1998-04-20 1999-12-23 Mannesmann Ag Microwave heating and plasticizing of plastic granules fed to pressure injection molding machine

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