DE2833663A1 - Electric heater cartridges for plasticising thermoplastics - have gauge and length of heating wire coils adjusted so that glowing temp. is attained - Google Patents
Electric heater cartridges for plasticising thermoplastics - have gauge and length of heating wire coils adjusted so that glowing temp. is attainedInfo
- Publication number
- DE2833663A1 DE2833663A1 DE19782833663 DE2833663A DE2833663A1 DE 2833663 A1 DE2833663 A1 DE 2833663A1 DE 19782833663 DE19782833663 DE 19782833663 DE 2833663 A DE2833663 A DE 2833663A DE 2833663 A1 DE2833663 A1 DE 2833663A1
- Authority
- DE
- Germany
- Prior art keywords
- heating wire
- heating
- glowing
- air
- temp
- 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.)
- Ceased
Links
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
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
- H05B3/44—Heating elements having the shape of rods or tubes non-flexible heating conductor arranged within rods or tubes of insulating material
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Description
Anlage zur Patentanmeldung Nr.Annex to patent application no.
Beschreibung Elektrische Heizpatrone zur Erzeugung von Heißluft in Heißluftgebläsen. Description Electric heating cartridge for generating hot air in Hot air blowers.
Die Erfindung betrifft eine elektrische Heizpatrone aus zuei oder mehr hintereinander montierten Keramikkörpern mit eigenen Heizdrahtstromkreisen. Sie dient der Erzeugung von neißluft hoher Temperatur, insbesondere in Rohren mit uorgeschalteten Gebläsen (Heißluftgebläse) und angesetzten, unterschiedlichen Düsen, wie sie vorwiegend in Geräten zur Plastifizierung thermoplastischer Kunststoffe Verwendung finden.The invention relates to an electric heating cartridge from zuei or more ceramic bodies mounted one behind the other with their own heating wire circuits. It is used to generate high temperature hot air, especially in pipes with upstream blowers (hot air blower) and attached, different nozzles, as it is mainly used in devices for plasticizing thermoplastics Find use.
Derartige Patronen müssen bei vorgegebener Strömungsgeschwindikeit der Luft, Luft von hoher Temperatur erzeugen, um eine rentable Arbeitsgeschwindekeit der Geräte zu erreichen.Such cartridges must be at a given flow rate of the air, producing air of high temperature, at a profitable working speed of the devices.
Es ist bekannt, zur Erfüllung dieser Anforderungen Heizpatronen aus einem Keramikteil zu verwenden, in welchen (Patranen) ein bis drei Heizdrahtstromkreise nebeneinander angeordnet sind. Die Keramikkörper sind überwiegend als Mehrlochrohre ausgebildet. So bildet etwa bei einem Mehrlochkeranikkörper mit achzehn Löchern jeweils eine Heizdrahtuendel in sechs der achzehn Löcher einen Heizdrahtstromkreis. Dabei durchläuft die Heizdrahtwendel die gesamte Länge des KeramikkörpersZ die restlichen zwölf Löcher ergeben zuei weitere Heizdrahtstromkreise.It is known to meet these demands made of cartridge heaters to use a ceramic part in which (patranen) one to three heating wire circuits are arranged side by side. The ceramic bodies are predominantly multi-hole tubes educated. For example, a multi-hole ceramic body with eighteen holes each a heating wire coil in six of the eighteen holes a heating wire circuit. The heating wire coil runs through the entire length of the ceramic body Z the remaining ones twelve holes result in additional heating wire circuits.
Auch andere Aufteilungen sind bekannt, wie etwa zehn und acht Löcher mit zuei Heizdrahtstromkreisen. In allen bekannten Fällen durchläuft jede Heizdrahtuendel immer die gesamte Länge des Keramikkörpers. (Heizpatronen der Firmen Leister Anlage zur Patentanmeldung Nr.Other divisions are also known, such as ten and eight holes with additional heating wire circuits. In all known cases, each coil of heating wire runs through it always the entire length of the ceramic body. (Heating cartridges from Leister system for patent application no.
Beschreibung Diese Patronen werden in ihrer Leistung dadurch begrenzt, daß die durch das Gebläse eintretende kalte Luft einen Großteil der Heizdrahtwendeln so stark abkühlt, daß nur die Wendeln im letzten Drittel der Mehrlochkeramik den erforderlichen Glühzustand erreichen, während die letzten zwei bis fünf Windungen der Heizdrahtwendeln bereits die zulässige Grenz-Glühtemperatur erreicht haben. Gerade der glühende Anteil der Heizdrahtwendeln stellt jedoch einen entscheidenden Faktor für die Temperatur der austretenden Luft einer Patrone dar, bei gleicher Strömungsgeschwindigkeit.Description These cartridges are limited in their performance by that the cold air entering through the fan a large part of the heating wire coils cools so much that only the coils in the last third of the multi-hole ceramic Reach the required glow condition during the last two to five turns the heating wire coils have already reached the permissible limit annealing temperature. However, it is precisely the glowing part of the heating wire coils that is decisive Factor for the temperature of the air exiting a cartridge, with the same Flow velocity.
Der Erfindung liegt die Aufgabe zugrunde, den mit hoher Temperatur glühenden Anteil der Heizdrahtwendeln zu erhöhen und damit eine höhere Lufttemperatur zu erreichen, ohne die Strömungsgeschwindikeit zu verringern.The invention is based on the problem of the high temperature Increase the glowing proportion of the heating wire coils and thus a higher air temperature to achieve without reducing the flow velocity.
Diese Aufgabe wurde erfindungsgemäß dadurch gelöst, daß zwei oder mehr Keramikkörper mit jeweils eigenem Heizdrahtstromkreis im Luftstrom hintereinander angeordnet werden. Die Stromkreise der einzelnen Heizdrahtwendeln werden so aufeinander abgestimmt, daß - jenach Länge des einzelnen Keramikkörpers - zwei Drittel bis drei Drittel der Heizdrahtwendeln die erforderliche Glühtemperatur erreichen. Die Abstimmung geschieht durch die Wahl geeigneter Heizdrahtquerschnitte und unterschiedliche Längen der einzelnen Wendeln.This object was achieved in that two or more ceramic bodies, each with their own heating wire circuit, one behind the other in the air flow to be ordered. The circuits of the individual heating wire coils are thus one on top of the other matched that - depending on the length of the individual ceramic body - two thirds to three Thirds of the heating wire coils reach the required annealing temperature. The vote is done by choosing suitable heating wire cross-sections and different lengths of the individual coils.
Die mit der Erfindung erzielten Vorteile bestehen insbesondere darin, -bei gleicher Strömungsgeschwindigkeit der Luft, höhere Lufttemperaturen zu erzielen. Bei den eingangs be- Anlage zur Patentanmeldung Nr.The advantages achieved with the invention are in particular: -to achieve higher air temperatures with the same air flow velocity. In the case of the initially Annex to patent application no.
Beschreibung schriebenen Geräten zur Plastifizierung thermoplastischer Kunststoffe, wird dadurch die Arbeitsgeschwindigkeit erhöht.Description of the devices for the plasticization of thermoplastics Plastics, this increases the working speed.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben: Die Zeichnung stellt eine Heizpatrone laut Beschreibung dar, bestehend aus drei Keramikkörpern mit jeweils eigenen Heizdrahtstromkreisen, die der Übersichtlichkeit halber nicht eingezeichnet sind. Die einzelnen Keramikkörper sind durch Zwischenscheiben aus Keramik getrennt, in deren Versenken die Umkehr der Heizdrahtwendeln erfolgt.An embodiment of the invention is shown in the drawing and is described in more detail below: The drawing shows a heating cartridge Description, consisting of three ceramic bodies, each with its own heating wire circuits, which are not shown for the sake of clarity. The individual ceramic bodies are separated by ceramic washers, in the countersinking of which the reversal the heating wire coils takes place.
Für die Stromversorgung der zweiten und dritten Keramikkörper sind kleine Lochkanäle vorgesehen, durch die die verdrillten Enden der folgenden Heizdrahtwendeln zurückgeführt werden. For the power supply of the second and third ceramic bodies are small perforated channels are provided through which the twisted ends of the following heating wire coils to be led back.
Es bedeuten im Einzelnen: 1 Keramikkörper 2 Zwischenscheibe mit Versenken 3 Lochkanäle zum Einziehen der Heizdrahtwendeln 4 Lochkanäle zur Stromversorgung der nachfolgenden Keramikkörper 5 Vierkantloch zur Aufnahme des Vierkantstahles, der die einzelnen Keramikkörper und Zwischenscheiben verbindet und gegen Verdrehen sichert. In detail, they mean: 1 ceramic body 2 intermediate washers with countersinking 3 perforated channels for pulling in the heating wire coils 4 perforated channels for power supply the following ceramic body 5 square hole for receiving the square steel, which connects the individual ceramic bodies and washers and prevents twisting secures.
6 Stahlrohrstück eines Heißluftgebläses 7 Richtung des Luftstromes 6 Steel pipe section of a hot air blower 7 Direction of the air flow
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782833663 DE2833663A1 (en) | 1978-08-01 | 1978-08-01 | Electric heater cartridges for plasticising thermoplastics - have gauge and length of heating wire coils adjusted so that glowing temp. is attained |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782833663 DE2833663A1 (en) | 1978-08-01 | 1978-08-01 | Electric heater cartridges for plasticising thermoplastics - have gauge and length of heating wire coils adjusted so that glowing temp. is attained |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2833663A1 true DE2833663A1 (en) | 1980-02-21 |
Family
ID=6045921
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19782833663 Ceased DE2833663A1 (en) | 1978-08-01 | 1978-08-01 | Electric heater cartridges for plasticising thermoplastics - have gauge and length of heating wire coils adjusted so that glowing temp. is attained |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2833663A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2528264A1 (en) * | 1982-06-08 | 1983-12-09 | Hutogepgyar | ELECTRICAL HEATING BODY FOR THERMOTECHNICAL INSTALLATIONS, ESPECIALLY FOR MIXED SUPPLY ABSORPTION REFRIGERATION CABINETS |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1111749B (en) * | 1959-08-10 | 1961-07-27 | Licentia Gmbh | Electrically heated water heater |
US3965047A (en) * | 1971-07-20 | 1976-06-22 | Ernest K. Cleland | Electrical resistant fluid-permeable heat generating member and method of producing the same |
-
1978
- 1978-08-01 DE DE19782833663 patent/DE2833663A1/en not_active Ceased
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1111749B (en) * | 1959-08-10 | 1961-07-27 | Licentia Gmbh | Electrically heated water heater |
US3965047A (en) * | 1971-07-20 | 1976-06-22 | Ernest K. Cleland | Electrical resistant fluid-permeable heat generating member and method of producing the same |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2528264A1 (en) * | 1982-06-08 | 1983-12-09 | Hutogepgyar | ELECTRICAL HEATING BODY FOR THERMOTECHNICAL INSTALLATIONS, ESPECIALLY FOR MIXED SUPPLY ABSORPTION REFRIGERATION CABINETS |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OAM | Search report available | ||
OB | Request for examination as to novelty | ||
8110 | Request for examination paragraph 44 | ||
8120 | Willingness to grant licences paragraph 23 | ||
8131 | Rejection |