EP0845196B2 - Galette for heating a running synthetic thread - Google Patents
Galette for heating a running synthetic thread Download PDFInfo
- Publication number
- EP0845196B2 EP0845196B2 EP97928210A EP97928210A EP0845196B2 EP 0845196 B2 EP0845196 B2 EP 0845196B2 EP 97928210 A EP97928210 A EP 97928210A EP 97928210 A EP97928210 A EP 97928210A EP 0845196 B2 EP0845196 B2 EP 0845196B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- godet
- carrier
- coil support
- primary windings
- galette
- 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 - Lifetime
Links
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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
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/14—Tools, e.g. nozzles, rollers, calenders
-
- 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
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/14—Tools, e.g. nozzles, rollers, calenders
- H05B6/145—Heated rollers
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
- D02J13/005—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass by contact with at least one rotating roll
Definitions
- the invention relates to a godet for heating a running synthetic thread according to the preamble of claim 1.
- Such godets are known.
- a godet for heating a running yarn which has more than two axially successively arranged stationary primary windings and a magnetically conductive godet, which is rotatably mounted concentrically to the primary windings and which is inductively connected to the primary windings via a narrow radial gap for generating secondary currents is.
- the carrier of the primary windings is composed of a plurality of layered transformer plates, which are mounted perpendicular to the axis of the bobbin.
- the primary windings are operated with an AC of adjustable frequency, the primary windings are included in a resonant circuit, which is tuned to the set frequency.
- the resonant circuit is switched on or off depending on the measured temperature on the godet casing.
- a similar galette is in the GB 989,349 described in which a primary winding is mounted on a concentrically arranged in a hollow cylindrical godet casing round carrier.
- a primary winding is mounted on a concentrically arranged in a hollow cylindrical godet casing round carrier.
- Like in the US 3,508,024 are all flat transformer sheets of the carrier of the primary winding in the axial direction on the bobbin layered.
- the laminated iron sheets are arranged to form annular concentric air gaps radial to the godet rotation axis.
- the magnetic flux in particular to the coil carrier, is shielded, it is prevented that a stray field can escape to the outside.
- an optimal magnetic flux is also possible, which does not have to overcome boundary layers and effectively shields not heated sections.
- the special design and arrangement of the transformer sheets ensure better heating of the godet jacket, because the stray field within the godet is significantly reduced.
- Another advantage is that commercial cut cores can be used to accommodate the windings. This simplifies the manufacturing process and reduces costs.
- the gap formed between adjacent cut cores only leads to a very small stray field, which has no influence on the generated current and thus the temperature in the godet casing.
- thin transformer sheets can be used up to a thickness of 0.01 mm. Since the penetration depth of the magnetic flux decreases with increasing frequency and the conduction of the magnetic flux, however, takes place exclusively on the surface, such thin sheets are useful in order to minimize the power loss.
- a godet casing 2 is clamped by means of a cone arrangement 7 on a spindle 9 mounted in two bearings 8.
- the bearings 8 are supported on a fixed receiving body 11.
- the godet casing 2 is formed in cross-section substantially U-shaped and has on its end wall 2a a central opening which is bounded by a substantially cylindrical inwardly directed projection 13 which has an inner cone 7 which fits to a cone of the spindle 9.
- a bobbin 5 From the receiving body 11 extends in the form of a hollow cylinder, a bobbin 5 through the spindle 9 almost to the end wall 2a of the godet shell 2.
- the carriers 3 each have a groove base 3a and spaced apart legs 3b, so that a U-shaped annular space is formed, which serves to receive the primary winding 1. Die U-förmige Ring Structure 3a ist in Fig. 1 classroom.
- the legs 3b extend to just before the inner surface of the godet casing 2. Two adjacent legs 3b form with this inner lateral surface in each case a defined radial gap 4 of the leg width corresponding dimension.
- a corresponding control device (not shown) arranged in the carriers 3 primary windings 1 are separately controllable, so that a substantially constant temperature along the outer surface of the godet casing 2 can be achieved.
- the rotating godet casing 2 is magnetically coupled, so that a voltage is induced in the godet casing, which has a current flow result.
- the current flow in the godet casing along the circumference has, due to the electrical resistance of the godet material, a heating result.
- the transformer plates are arranged in the groove base so that they lie radially one above the other.
- Fig. 2 is a locally enlarged sectional view of the groove bottom 3a shown, in which the transformer sheets are stacked radially in the region of the groove bottom.
- a preferred embodiment is shown, according to which the carriers 3 are formed so that the layered transformer sheets are stacked U-shaped into each other to so-called Thomasbandkernen, ie, the transformer sheets are in the radial direction and not - as is well known - layered in the axial direction.
- the carriers 3 are formed so that the layered transformer sheets are stacked U-shaped into each other to so-called Thomasbandkernen, ie, the transformer sheets are in the radial direction and not - as is well known - layered in the axial direction.
- the bobbin 5 On the circumference of the bobbin 5 several U-shaped Schittbandkerne 3 are arranged segmentally to several.
- the segment-shaped cut cores 3 arranged on the circumference of the coil carrier in the circumferential direction without spacing thus form a winding carrier for a primary winding.
- the advantage of using cutting cores 3 is that the magnetic flux towards the outside, in particular also to the coil support 5, is shielded, so that no stray field can escape to the outside.
- the layered transformer sheets are stacked in a U-shape. This also allows an optimal magnetic flux that does not have to overcome any boundary layers. Trafo sheets, which are arranged one after the other in the axial direction, are caused by high-frequency use with, for example, 2 kHz thicker boundary layers, which lead to a significant increase in resistance.
- the surface of the groove base 3a, on which the chess band core 3 is arranged on the carrier 5, is either substantially planar or adapted to the surface of the carrier 5 and contacts the surface of the carrier 5. The winding takes place in the circumferential direction.
- the free ends of the legs 3b of the cut cores are rounded so that a substantially constant radial gap 4 is formed between the godet casing 2 and the free end of the legs 3b.
- the gap 14 formed between adjacent cut-strip cores 3 leads only to a very small stray field which has no influence on the generated current and thus the temperature in the godet casing 2.
- the kerf cores of the adjacent primary windings can be arranged offset from one another in such a way that axially defined gaps 14 are formed around the width of the legs 3b.
- the carrier 3 consists of separate legs 3b and a separate groove base 3a.
- the groove base 3a of the carrier 3 is a hollow cylinder of a plurality of stacked in the radial direction transformer plates.
- the legs 3b of the carrier 3 have a plurality of axially stacked annular transformer sheets. The guided between the groove base 3a and the legs 3b radial stray field is very low, which is why no influence on the generated current and thus the temperature in the godet casing 2 is present.
- Fig. 4B shows another example in which the carrier 3 consists of separate legs 3b and a separate groove bottom 3a.
- the groove base 3a of the carrier 3 is a hollow cylinder of a plurality of stacked in the radial direction transformer plates.
- the legs 3b of the cutting belt core 3 have a plurality of stacked annular transformer sheets.
- the axial stray field guided between the groove bottom 3a and the legs 3b is very small, which has no influence on the generated current and thus on the temperature in the godet casing 2.
- Fig. 4C shows another example in which the carrier 3 consists of separate legs 3b and a separate groove bottom 3a.
- the groove bottom 3a of the cut strip core 3 is a hollow cylinder of a plurality of stacked in the radial direction transformer plates.
- the legs 3b of the carrier 3 have a plurality of stacked annular transformer sheets. The oblique stray field guided between the groove bottom 3a and the legs 3b is very small, which is why there is no influence on the generated current and thus on the temperature in the godet casing 2.
- Fig. 6 a shape of the leg 3b, both with the arrangement in Fig. 4A as well as with the arrangement in Fig. 4B can be combined.
- the leg 3b is stacked from a plurality of annular transformer plates. This arrangement is particularly low loss, since the radial gap 4 between the legs 3b and the godet casing 2 without interruptions circumferentially performed substantially constant. The magnetic leakage flux is very low.
- each annular transformer plate has a star-shaped outer edge.
- the transformer sheets are stacked axially so that the sternfömigen outer edges are aligned axially one after the other.
- Fig. 8 a possible attachment of the carrier 3 is shown on the bobbin 5, in which, for example, the carrier 3 formed as cut cores are each secured with at least one screw 6 on the bobbin 5 of the godet 2.
- U-shaped layered Trafo sheets in particular the cut cores also have the advantage that the required for high-frequency application thin sheets can be used up to 0.01 mm. Since the penetration depth of the magnetic flux decreases with increasing frequency and the power of the magnetic flux, however, takes place exclusively at the surface. Such thin sheets are required to reduce power losses.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- General Induction Heating (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Resistance Heating (AREA)
Abstract
Description
Die Erfindung betrifft eine Galette zum Erhitzen eines laufenden synthetischen Fadens gemäß Oberbegriff von Anspruch 1.The invention relates to a godet for heating a running synthetic thread according to the preamble of
Derartige Galetten sind bekannt. In der
Eine ähnliche Galette ist in der
Generell tritt bei derartigen beheizten Galetten das Problem auf, daß der Verlust des magnetischen Flusses nach außen, insbesondere zum Spulenträger hin ziemlich groß ist, da alle ebenen Trafobleche des Trägers der Primärwicklungen in axialer Richtung auf dem Spulenträger geschichtet sind. Auch ist der Magnetfluß in dem so kontruierten Träger nicht optimal, weil Grenzschichten durch axial hintereinander gefügte Trafobleche gebildet sind. Um diese Grenzschichten zu überwinden, wird eine bestimmte Energie benötigt, was einen Leistungsverlust verursacht. Insbesondere bei hochfrequenter Anwendung mit zum Beispiel 2 kHz und mehr erhöht sich der Leistungverlust wegen stärkerer Grenzschichten dramatisch.Generally occurs in such heated godets, the problem that the loss of magnetic flux to the outside, in particular to the coil support is rather large, since all planar transformer sheets of the carrier of the primary windings are laminated in the axial direction on the bobbin. Also, the magnetic flux is not optimal in the carrier thus constricted because boundary layers are formed by transformer sheets joined axially one behind the other. To overcome these boundary layers, a certain energy is needed, which causes a loss of power. Especially with high-frequency application with, for example, 2 kHz and more, the power loss increases dramatically due to stronger boundary layers.
Es ist deshalb Aufgabe der Erfindung, eine heizbare Galette der oben umrissenen Art zu schaffen, welche einen optimalen Magnetfluß in der Galette durch Verhinderung eines Streufeldes innerhalb des Galettenmantels, insbesondere in dem Bereich der Nutgründe des Trägers und durch Verringerung des durch Grenzschichten verursachten Leistungsverlustes ermöglicht.It is therefore an object of the invention to provide a heatable godet of the type outlined above, which allows optimal magnetic flux in the godet by preventing a stray field within the godet shell, in particular in the region of the groove bottom of the carrier and by reducing the power loss caused by boundary layers.
Diese Aufgabe wird durch eine Galette mit den Merkmalen gemäß Anspruch 1 gelöst. Zweckmäßige Weiterbildungen sind in den abhängigen Ansprüchen definiert.This object is achieved by a godet with the features of
Da der magnetische Fluß, insbesondere zum Spulenträger hin, abgeschirmt ist, wird verhindert, daß ein Streufeld nach außen treten kann. Damit wird zusätzlich ein optimaler Magnetfluß ermöglicht, der keine Grenzschichten überwinden muß und nicht zu beheizende Abschnitte wirksam abschirmt.Since the magnetic flux, in particular to the coil carrier, is shielded, it is prevented that a stray field can escape to the outside. Thus, an optimal magnetic flux is also possible, which does not have to overcome boundary layers and effectively shields not heated sections.
Die besondere Konstruktion und Anordnung der Trafobleche gewährleisten ein besseres Erhitzen des Galettenmantels, weil das Streufeld innerhalb der Galette erheblich verringert ist.The special design and arrangement of the transformer sheets ensure better heating of the godet jacket, because the stray field within the godet is significantly reduced.
Ein weiterer Vorteil liegt darin, daß handelsübliche Schnittbandkerne zur Aufnahme der Wicklungen verwendet werden können. Das vereinfacht den Herstellungsprozeß und reduziert die Kosten. Der sich zwischen benachbarten Schnittbandkernen bildende Spalt führt nur zu einem sehr geringen Streufeld, das keinen Einfluß auf den erzeugten Strom und damit die Temperatur im Galettenmantel hat.Another advantage is that commercial cut cores can be used to accommodate the windings. This simplifies the manufacturing process and reduces costs. The gap formed between adjacent cut cores only leads to a very small stray field, which has no influence on the generated current and thus the temperature in the godet casing.
Die Oberflächenform des Nutgrundes, über welche der Träger auf dem Spulenträger angeordnet ist, vereinfacht die Montage.The surface shape of the groove base, over which the carrier is arranged on the bobbin, simplifies assembly.
Auch können für die hochfrequente Anwendung erforderliche dünne Trafobleche bis zu einer Dicke von 0,01 mm eingesetzt werden. Da die Eindringtiefe des magnetischen Flusses mit zunehmender Frequenz abnimmt und die Leitung des magnetischen Flusses jedoch ausschließlich an der Oberfläche erfolgt, sind derart dünne Bleche zweckmäßig, um die Verlustleistung möglichst gering zu halten.Also required for high-frequency application thin transformer sheets can be used up to a thickness of 0.01 mm. Since the penetration depth of the magnetic flux decreases with increasing frequency and the conduction of the magnetic flux, however, takes place exclusively on the surface, such thin sheets are useful in order to minimize the power loss.
Weitere Vorteile, Merkmale und Anwendungsmöglichkeiten der Erfindung werden nun anhand eines Ausführungsbeispiels unter Bezugnahme auf die beigefügten Zeichnungen näher erläutert. Es zeigen:
- Fig. 1
- eine Schnittansicht durch eine induktiv beheizte Galette;
- Fig. 2
- eine vergrößerte Darstellung des Nutgrunds gemäß Bereich A in
Fig. 1 ; - Fig. 3
- eine Ausführungsform des Trägers gemäß Bereich B in
Fig. 1 , der mehrere U-förmig ineinander gestapelte Trafobleche aufweist; - Fig. 4A, 4B und 4C
- weitere Beispiele des Schnittbandkerns gemäß Bereich B in
Fig. 1 zur Erläuterung des technischen Hintergrundes, der aus separaten Schenkeln und einem separaten Nutgrund besteht; - Fig. 5
- eine Schnittansicht durch die Galette gemäß
Fig. 1 , wobei die Anordnung von mehreren segmentartigen Schnittbandkernen auf dem Umfang des Trägers gezeigt ist; - Fig. 6
- eine Schnittansicht durch die Galette gemäß
Fig. 1 , undFig. 4A oder 4B oder 4C , wobei ein ringförmigerseparater Schenkel 3b dargestellt ist; - Fig. 7
- eine Schnittansicht ähnlich
Fig. 6 , wobei jedoch derdargestellte Schenkel 3b sternförmig ausgebildet ist; und - Fig. 8
- eine Teilansicht, wobei die Befestigung des Schnittbandkerns auf dem Träger gezeigt ist.
- Fig. 1
- a sectional view through an inductively heated galette;
- Fig. 2
- an enlarged view of the groove bottom according to area A in
Fig. 1 ; - Fig. 3
- an embodiment of the carrier according to area B in
Fig. 1 comprising a plurality of transformer sheets stacked in a U-shape; - Figs. 4A, 4B and 4C
- Further examples of the Schnittbandkerns according to area B in
Fig. 1 to explain the technical background, consisting of separate Thighs and a separate groove base exists; - Fig. 5
- a sectional view through the galette according to
Fig. 1 showing the arrangement of a plurality of segmented cut cores on the circumference of the carrier; - Fig. 6
- a sectional view through the galette according to
Fig. 1 , andFig. 4A or 4B or 4C showing an annularseparate leg 3b; - Fig. 7
- a sectional view similar
Fig. 6 However, wherein the illustratedleg 3b is formed star-shaped; and - Fig. 8
- a partial view, wherein the attachment of the Schnittbandkerns is shown on the carrier.
Bei einer in
Über eine entsprechende Steuereinrichtung (nicht gezeigt) sind die in den Trägern 3 angeordneten Primärwicklungen 1 separat steuerbar, so daß eine im wesentlichen konstante Temperatur längs der äußeren Oberfläche des Galettenmantels 2 erzielbar ist. Über die Ringspalte 4 zwischen den Schenkel 3b und der inneren Mantelfläche des Galettenmantels 2, welcher magnetisch leitend ist, ist der rotierende Galettenmantel 2 magnetisch gekoppelt, so daß eine Spannung in dem Galettenmantel induziert wird, der einen Stromfluß zur Folge hat. Der Stromfluß im Galettenmantel längs des Umfangs hat, bedingt durch den elektrischen Widerstand des Galettenmaterials, eine Erwärmung zur Folge. Durch gezieltes Zu- und Abschalten der Spulenspannung kann somit die Temperatur im Galettenmantel eingestellt werden. Um Leistungsverluste insbesondere bei hochfrequenter Anwendung von beispielsweise 2 kHz und darüber zu verhindern, sind die Trafobleche im Nutgrund so angeordnet, daß sie radial übereinander liegen.Via a corresponding control device (not shown) arranged in the
In
In
In
In
In
In
In
In
Die Anwendungen von U-förmig geschichteten Trafoblechen insbesondere der Schnittbandkernen besitzen des weiteren den Vorteil, daß die für die hochfrequente Anwendung erforderlichen dünnen Bleche bis zu 0,01 mm eingesetzt werden können. Da die Eindringtiefe des magnetischen Flusses mit zunehmender Frequenz abnimmt und die Leistung des magnetischen Flusses jedoch ausschließlich an der Oberfläche erfolgt. sind derart dünne Bleche erforderlich, um die Leistungsverluste geringer zu halten.The applications of U-shaped layered Trafo sheets in particular the cut cores also have the advantage that the required for high-frequency application thin sheets can be used up to 0.01 mm. Since the penetration depth of the magnetic flux decreases with increasing frequency and the power of the magnetic flux, however, takes place exclusively at the surface. Such thin sheets are required to reduce power losses.
Claims (8)
- Godet for heating an advancing synthetic filament yam, the godet comprising a plurality of stationary primary windings (1) and with respect thereto a magnetically conductive, rotatably supported godet jacket (2), each of the primary windings (1) being wound on at least one U-shaped carrier (3) consisting of a plurality of transformer sheets, the U-shaped carriers being arranged concentric with godet jacket (2), one following the other on a coil support (5), and the godet jacket (2) being coupled via side walls (3b) of carrier (3) with the primary windings (1) respectively via a defined radial clearance (4) for generating induced currents, wherein the carrier (3) is constructed such that its transformer sheets overlie one another radially in the region of a channel bottom (3a) and are aligned in axial direction of the coil support (5), and that its transformer sheets axially follow one another in the region of side walls (3b) and are aligned in radial direction of the coil support (5), characterized in that the carrier (3) comprises a plurality of transformer sheets stacked into one another in U-shape.
- Godet as defined in claim 1, characterized in that a plurality of carriers (3) is arranged in the form of segments over the circumference of the coil support (5), so as to receive one of the primary windings (1).
- Godet as defined in claim 2, characterized in that the channel bottom (3a) of the segment-shaped carriers (3) is substantially flat and contacts the surface of coil carrier (5).
- Godet as defined in claim 2 or 3, characterized in that the side walls (3b) of the segment-shaped carriers (3) are made arcuate at their free ends, so that a substantially constant radial clearance (4) results between the carrier (3) and the godet jacket (2).
- Godet as defined in claim 2, characterized in that the outer surface of the channel bottom (3a) above which the carrier (3) is arranged on coil support (5) is adapted to the surface of the coil support (5).
- Godet as defined in one of claims 2-5, characterized in that the segment-shaped carriers (3) of adjacent primary windings (1) are arranged over the circumference of coil support (5) offset from one another in the axial direction of coil support (5).
- Godet as defined in one of claims 1-6, characterized in that each of the carriers (3) is mounted on the coil support (5) by means of at least one screw (6).
- Godet as defined in one of claims 1-7, characterized in that the transformer sheets have a thickness as small as 0.01 mm.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19624266 | 1996-06-18 | ||
DE19624266 | 1996-06-18 | ||
PCT/EP1997/003121 WO1997049265A1 (en) | 1996-06-18 | 1997-06-16 | Galette for heating a running synthetic thread |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0845196A1 EP0845196A1 (en) | 1998-06-03 |
EP0845196B1 EP0845196B1 (en) | 2002-11-27 |
EP0845196B2 true EP0845196B2 (en) | 2011-07-06 |
Family
ID=7797255
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97928210A Expired - Lifetime EP0845196B2 (en) | 1996-06-18 | 1997-06-16 | Galette for heating a running synthetic thread |
Country Status (7)
Country | Link |
---|---|
US (1) | US5970592A (en) |
EP (1) | EP0845196B2 (en) |
KR (1) | KR100446346B1 (en) |
CN (1) | CN1135908C (en) |
DE (1) | DE59708815D1 (en) |
TW (1) | TW354339B (en) |
WO (1) | WO1997049265A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7105784B2 (en) * | 2003-03-24 | 2006-09-12 | Kabushiki Kaisha Toshiba | Fixing device |
US6861627B2 (en) * | 2003-03-26 | 2005-03-01 | Kabushiki Kaisha Toshiba | Induction heat fixing device |
EP1614783B1 (en) * | 2004-07-06 | 2007-10-10 | SSM Schärer Schweiter Mettler AG | Inductor core for a heatable galette |
DE502005011168D1 (en) * | 2004-10-14 | 2011-05-05 | Oerlikon Textile Gmbh & Co Kg | GALETTE FOR LEADING, WARMING AND PROMOTING A THREAD |
PL2020160T3 (en) * | 2006-04-24 | 2018-01-31 | Inductoheat Inc | Electric induction heat treatment of an end of tubular material |
CN101431884B (en) * | 2008-12-11 | 2013-03-20 | 马嘉惠 | Electromagnetic shielding device matched with radio frequency focusing heating mechanism |
CN115198419B (en) * | 2022-08-12 | 2023-09-26 | 昆山联滔电子有限公司 | Braided wire hot press |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2037817C3 (en) † | 1969-08-20 | 1973-10-04 | General Electric Co., Schenectady, N.Y. (V.St.A.) | Electric induction heater |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB858855A (en) * | 1956-05-15 | 1961-01-18 | Wild Barfield Electr Furnaces | Induction heated rotary rollers |
NL283604A (en) * | 1961-09-26 | 1900-01-01 | ||
CH434550A (en) * | 1964-11-21 | 1967-04-30 | Tokushu Denki Kabushiki Kaisha | Electrically heated rotating heating drum |
BE716725A (en) * | 1965-12-03 | 1968-12-02 | ||
US3412229A (en) * | 1966-10-20 | 1968-11-19 | Cameron Brown Capital Corp | Electric heating means |
RO55797A (en) * | 1967-08-16 | 1974-01-03 | ||
DE1660235C3 (en) * | 1967-08-16 | 1980-06-26 | Barmag Barmer Maschinenfabrik Ag, 5600 Wuppertal | Induction heatable galette |
US3448233A (en) * | 1967-09-26 | 1969-06-03 | Pillar Corp | Induction heating assembly |
US3508024A (en) * | 1968-06-17 | 1970-04-21 | Gen Electric | Dual inductance induction heater |
BE736709A (en) * | 1968-10-24 | 1969-12-31 | ||
GB1319318A (en) * | 1970-07-01 | 1973-06-06 | Platt International Ltd | Inductively heatable roller having a temperature sensor |
JPS6139394A (en) * | 1984-07-30 | 1986-02-25 | トクデン株式会社 | 3-phase annular laminated core leg type rotary roller |
US5159166A (en) * | 1988-06-30 | 1992-10-27 | Rieter Machine Works, Ltd. | Drawroll unit |
DE58909654D1 (en) * | 1988-06-30 | 1996-05-23 | Rieter Ag Maschf | Wide speed range godet |
DE59202786D1 (en) * | 1991-04-27 | 1995-08-10 | Barmag Barmer Maschf | Galette for heating a running thread. |
DE4339903A1 (en) * | 1992-12-03 | 1994-06-09 | Barmag Barmer Maschf | Induction heated conical godet roller for yarn - has cylindrical induction coil core with varying length projections on inside of shell |
CH690599A5 (en) * | 1994-11-10 | 2000-10-31 | Barmag Barmer Maschf | Galette for heating and conveying threads. |
-
1997
- 1997-06-16 CN CNB971907315A patent/CN1135908C/en not_active Expired - Fee Related
- 1997-06-16 US US09/011,848 patent/US5970592A/en not_active Expired - Fee Related
- 1997-06-16 WO PCT/EP1997/003121 patent/WO1997049265A1/en active IP Right Grant
- 1997-06-16 EP EP97928210A patent/EP0845196B2/en not_active Expired - Lifetime
- 1997-06-16 KR KR10-1998-0700959A patent/KR100446346B1/en not_active IP Right Cessation
- 1997-06-16 DE DE59708815T patent/DE59708815D1/en not_active Expired - Lifetime
- 1997-06-18 TW TW086108517A patent/TW354339B/en not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2037817C3 (en) † | 1969-08-20 | 1973-10-04 | General Electric Co., Schenectady, N.Y. (V.St.A.) | Electric induction heater |
Also Published As
Publication number | Publication date |
---|---|
KR19990036291A (en) | 1999-05-25 |
TW354339B (en) | 1999-03-11 |
CN1135908C (en) | 2004-01-21 |
KR100446346B1 (en) | 2004-10-14 |
EP0845196B1 (en) | 2002-11-27 |
EP0845196A1 (en) | 1998-06-03 |
US5970592A (en) | 1999-10-26 |
DE59708815D1 (en) | 2003-01-09 |
WO1997049265A1 (en) | 1997-12-24 |
CN1196864A (en) | 1998-10-21 |
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