EP1748679B1 - Cartouche chauffante comprimée - Google Patents

Cartouche chauffante comprimée Download PDF

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Publication number
EP1748679B1
EP1748679B1 EP06012918A EP06012918A EP1748679B1 EP 1748679 B1 EP1748679 B1 EP 1748679B1 EP 06012918 A EP06012918 A EP 06012918A EP 06012918 A EP06012918 A EP 06012918A EP 1748679 B1 EP1748679 B1 EP 1748679B1
Authority
EP
European Patent Office
Prior art keywords
insulating material
heating cartridge
cartridge according
material plate
case
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
Application number
EP06012918A
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German (de)
English (en)
Other versions
EP1748679A3 (fr
EP1748679A2 (fr
Inventor
Andreas Schlipf
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.)
Tuerk and Hillinger GmbH
Original Assignee
Tuerk and Hillinger GmbH
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 Tuerk and Hillinger GmbH filed Critical Tuerk and Hillinger GmbH
Publication of EP1748679A2 publication Critical patent/EP1748679A2/fr
Publication of EP1748679A3 publication Critical patent/EP1748679A3/fr
Application granted granted Critical
Publication of EP1748679B1 publication Critical patent/EP1748679B1/fr
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Anticipated expiration legal-status Critical

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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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/04—Waterproof or air-tight seals for heaters
    • 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
    • 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
    • H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material

Definitions

  • the invention relates to a compacted heating element with at least one heating wire coil which is arranged exposed in a metal tubular body and embedded in a granulated insulating material and whose ends are each provided with protruding from the tubular body connections.
  • a compacted heating cartridge of the generic type is for example made DE 70 31 974 U known.
  • this heating cartridge several Schuleiterspiralen with different wire thicknesses and different spiral diameters are concentric with each other housed exposed in a cylindrical cartridge housing having a solid frontal bottom at one end and the other end is closed by a metal disc with wart-shaped holes.
  • a metal disc with wart-shaped holes instead of the usual connecting pins provided with Isoliermänteln strands are connected to the heating conductor ends. These strands are guided with their Isoliermänteln through the metal plate inside, so that there is an insulation between the metal disc and the conductor wires of the strands.
  • the invention has for its object to provide a compacted heating cartridge of the type mentioned, which can be produced with minimal labor and material costs.
  • This object is achieved according to the invention, that as a support for the heating wire coil in its width matched to the inner diameter of the tubular body flat insulating plate is provided, wherein the heating wire spiral along the two flat sides of the insulating material and thereby connected by a helical portion are connected to each other Deflection edge of the insulating material is performed.
  • the inventive arrangement and the provision of flat Isolierstoffplatten as a support for the heating wire coil it is much easier to place Bankdrahtchtl within the tube so that they can not come into contact with the pipe wall, so that less care is required when filling the insulating granules and this filling can be done much faster and thus cost-saving.
  • the connecting spiral section can be made of a short Wire section or comprise one or more windings.
  • the embodiment of claim 7 is advantageous in that the in itself quite unstable heating coil, if they rest only loosely on the two flat sides of the insulating, at larger lengths slightly radially outward against the Pipe wall can bend out. Due to the embodiment according to claim 7, this risk can be avoided.
  • the embodiments are provided according to claim 10, wherein the pairwise interconnected Wiendrahtheirl may be assigned to the two flat sides of the insulating plate different heating circuits.
  • the embodiment according to claim 17 is possible both in combination with the embodiment according to claim 10 and in combination with the embodiment according to claims 11 to 16.
  • the heating cartridge 1 consists of a cylindrical tubular body 2, which has a fixed bottom 3 and the upper open end 4 is closed by a closure disk 5.
  • the tubular body 2 is made of metal, preferably stainless steel. It may also consist of brass, copper or the like.
  • the closure disk 5 consists of an insulating material and is provided with through holes 6 for connecting pin 7 of two heating wire coil 8 and 9.
  • the two Schudrahtheirl 8 and 9 extend on both sides of a centrally disposed in the tubular body 2 insulating plate 10, which serves as a support for the heating wire coil 8 and 9.
  • the insulating plate 10 is provided in the region of its lower end with a recess formed as a bore 11, through which a the two heating wire coil 8 and 9 interconnecting coil section 12 is guided.
  • the recess can also be designed as an open slot 11 '. In these Embodiments is the deflection, at which the coil portion 12 is applied, in the recess 11 or 11 '.
  • these recesses 11 and 11 ' have a size matched to the diameter of the heating wire coil 8 and 9, so that one of the two heating wire coils 8, 9' can easily pass through this recess 11 or 11 '.
  • the lower end edge 27 of the insulating material 10 may be used as a deflection and to lead the connecting coil portion 12 directly to this end edge 27.
  • the lower end edge of the insulating material plate 10 may be provided with a not-shown notch.
  • the notch serves as a deflection edge for the helical section 12.
  • the cavity of the tubular body 2 between the bottom 3 and the closure disc 5 is filled with an insulating material 13, which may consist of quartz sand or a metal oxide, in particular magnesium oxide.
  • an insulating material 13 which may consist of quartz sand or a metal oxide, in particular magnesium oxide.
  • a granulate made of heat-resistant plastic can also be used for this purpose.
  • the two heating wire coil 8 and 9 are within the tubular body 2 by the insulating plate 10 and the two connecting pins 7, which are fixedly connected to the upper ends of the heating wire coil 8 and 9, sufficiently guided or against radial bending and thus protected against contact with the pipe body wall.
  • retaining clips 14 are made of U-shaped flat bodies of insulating material and they are provided with U-shaped recesses 15, in which the heating wire coil 8 and 9 are guided.
  • these retaining clips have clamping fingers 16 and 17, which latchingly and positively engage in locking notches 18 of the insulating material 10.
  • These notches 18 are each arranged in pairs opposite to the longitudinal edges 19 and 20 of the insulating material 10.
  • the retaining clips 14 With both sides of the U-shaped recess 15 arranged support surfaces 21, the retaining clips 14 are respectively on the flat sides of the insulating material 10 at.
  • the insulating plate 10 may be made of micanite or ceramic or plastic.
  • FIGS. 7 and 8 are each two Schwarzdrahtplanetaryl 8 and 8 'or 9 and 9' arranged mutually parallel on both sides of the insulating material 10. Their upper ends are each connected to connecting pins 7 and 7 '. The two Schudraht Maisl 8 and 8 'are only in Fig. 8 visible, noticeable.
  • the insulating plate 10 is provided at its lower end with two slot-shaped recesses 11 '. These recesses could also be designed as a bore.
  • retaining clips 14 ' are each provided with lateral clamping fingers 16 and 17 which engage positively in notches 18 of the insulating material 10. Between the U-shaped recesses 15 and 15 'there is a support finger 22, the end face 21 rests with the two support surfaces 21 on the clamping fingers 17 and 18 respectively on the flat side of the insulating plate 10 supporting.
  • FIGS. 7 and 8 In the embodiment of the FIGS. 7 and 8 is a closure disk 5 '( Fig. 14 ) provided with four through holes 6, through which the four connecting pins 7 and 7 'are guided to the outside.
  • Fig. 7a provides that the connecting pins 7 'of the two Schudrahtheirl 9 and 9' ( FIG. 8th ) are arranged at the lower end of the insulating plate 10 and thus protrude from the tubular body 2 on the lower end face. Accordingly, the tubular body 2 is not with a lower end wall 3 but in their place also with a shutter disc 5 "according to Fig. 14a equipped, which is used in this case also for closing the upper end of the tubular body.
  • the through holes 6 of this shutter disc 5 are eccentrically according to the connecting pins 7 and 7 ', offset from the median plane 25 to one side, arranged.
  • the 10 to 15 is the cavity of the tubular body 2 by two centrally crossing insulating panels 10 'in four space sectors 31, 32, 33 and 34 ( Fig. 11 ), in each of which a heating wire coil 8, 8 ', 9, 9' is located.
  • Both insulating material 10 ' are provided both at the upper end and at the lower end with two slot-shaped recesses 11', so that these two in the middle crossing position, as in FIGS. 11 and 12 represented, can be inserted in any position in the tubular body 2. Strictly speaking, this is only a twice existing insulating plate 10 ', one of which is upside down.
  • the two insulating plates 10 ' can be positively connected with each other in intersecting position, they are each provided with plug-in slots 35 which extend centrally and in each case symmetrically to its longitudinal axis 36.
  • These plug-in slots 35 each have a width b1 which corresponds to the thickness d of an insulating material plate 10 '.
  • the two equally long and equally wide and otherwise the same shape designed insulating 10 ' can be inserted flush with each other, it is necessary that these plug-in slots 35 extend at least over half the length s .
  • retaining clips 14 are provided of insulating material, which have a U-shaped flat shape, with two clamping fingers sixteenth and 17 are provided and also have support surfaces 21. Between the support surfaces are formed in this case without support fingers 22 recesses 15 and 15 '. Between these recesses 15 and 15 ', a notch-like recess 15/1 is provided, the connecting web 15/2 is received by a notch 18 of the respective bridged insulating plate 10'.
  • the retaining clips 14 are used in the same way as the retaining clips 14 '.
  • FIG. 16 to 20b Further embodiments of crosswise arranged Isolierstoffplatten are shown.
  • a first insulating plate 10/1 with the usual shape and arranged on the longitudinal edges 19 and 20 notches 18 for attaching retaining clips 14 "of FIGS. 12 and 15 intended.
  • This insulating plate 10/1 has in the region of its narrow-side end portions respectively symmetrically to its longitudinal axis 36 extending plug-in slots 35 'on.
  • These two plug-in slots 35 'each have a width b2 which is twice the thickness d of a second insulating plate Corresponds to 10/2.
  • these plug-in slots 35 ' have a longitudinal spacing s1 from each other.
  • This longitudinal distance s1 corresponds to the length s1 of a rectangular cutout 35/1, which the two otherwise have the same design under the second insulating 10/2.
  • the two remaining end portions 42 of these two Second Isolierstoffplatten 10/2 have the width b.
  • the width b3 of the cutouts 35/1 corresponds to b / 2 + d / 2. thereby, the end portions 42, as in FIG fig. 17 shown, congruent to be inserted into the slots 35 'of the insulating plate 10/1 so that they protrude equally far from this on both sides.
  • the upper and lower end portions 42 of the two second Isolierstoffplatten 10/2, as in Fig. 17 is shown, flat touching each other.
  • the outer edges 20 of the second insulating 10/2 are also provided with notches 18, which for receiving retaining clips 14 '(FIG. Fig. 15 ) serve.
  • the upper and lower end portions 42 of the second Isolierstoffplatten 10/2 are each arranged with symmetrical to the first insulating plate 10/1 and each other aligned recesses 11 'provided by which coil sections 12 or turns 12' of the heating wire coil 8, 9 can be passed through.
  • the first insulating plate 10/1 is provided with an extension 43 protruding into the spacer ring 40.
  • the plug-in slot 35 'in this embodiment is not guided to the lower end of this extension 43, but rather ends in the amount of a support shoulder 44 with which the first insulating plate 10/1 is seated on the upper edge 41 of the spacer ring 40.
  • This extension 43 is also in the embodiment of Fig. 18a available.
  • the extension 43 of the first insulating plate 10/1 thereby protects the around the lower edges 27 of the second insulating 10/2 guided around turns 12 'of extending on both sides of the insulating plate 10/1 Schudraht Maisl 8 and 9 against mutual contact.
  • 20a and 20b are also the two second insulating plates 10/2 each provided with an extension 43 ', which is arranged between two laterally and end open recesses 45.
  • the deflection edges are each formed by the horizontal portions 46 of the recesses 45. How out Fig. 20 can be seen in the both end and laterally open recesses 45 a plurality of turns 12 'of Schudrahtchtl 8 and 9 are guided around these deflecting edges 46 while maintaining the required distance from the bottom 3.
  • the assembly of the heating element is carried out in such a way that first the Schudraht Maisl 8, 8 ', 9, 9' with the attached connecting pins 7 and 7 'in the manner shown in the drawing on the or the Isolierstoffplatten 10th Then, this preassembled component is inserted into the tubular body 2 and the remaining cavity is filled with the granulated insulating material from the open upper side Shutter 5 and 5 'used in the upper end of the tubular body 2 and the tube body from the outside radially so vepreßt that not only the granulated insulating material undergoes a strong compression, but that the through holes 6 of the shutter disc 5 and 5' are so reduced in that they rest tight against the connecting pins 7 and 7 '.
  • connecting pin 7, 7 ' can also other connections, as shown DE 70 31 974 U known, for example sheathed strands, be provided.
  • closure disks 5, 5 'and 5 " which in themselves consist of insulating solids, can also be replaced by other closure means Depending on the nature of the insulating material filled in the tubular body, they can even be dispensed with.

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  • Resistance Heating (AREA)

Claims (20)

  1. Cartouche chauffante, notamment cartouche chauffante (1) compactée ayant au moins une hélice de fil chauffant (8, 9) montée libre dans un corps tubulaire (2) métallique et intégrée dans un matériau isolant à l'état de granulés et dont les extrémités sont munies de branchements respectifs (7) dépassant du corps tubulaire (2),
    caractérisée en ce que
    le support des hélices de fil chauffant (8, 9) est une plaque de matériau isolant (10), plate, dont la largeur est définie en fonction du diamètre intérieur du corps tubulaire (2),
    * les hélices de fil chauffant (8, 9) étant dirigées le long des deux faces de la plaque de matériau isolant (10) en étant reliées par un segment d'hélice (12, 12') qui passe autour d'une arête de renvoi (27) de la plaque de matériau isolant (10).
  2. Cartouche chauffante selon la revendication 1,
    caractérisée en ce que
    l'arête de renvoi est formée par le bord d'extrémité (27) du petit côté de la plaque de matériau isolant (10).
  3. Cartouche chauffante selon la revendication 2,
    caractérisée en ce que
    le bord de renvoi formé par le bord d'extrémité du petit côté de la plaque en matériau isolant (10, 10', 10/1) et le segment d'hélice (12) passant autour de cette arête de renvoi, sont séparés du fond (3) du corps tubulaire (2) par un disque isolant ou une bague d'écartement (40).
  4. Cartouche chauffante selon la revendication 1,
    caractérisée en ce que
    l'arête de renvoi est dans une découpe (11, 11') de la plaque en matériau isolant (10, 10', 10/2).
  5. Cartouche chauffante selon la revendication 3 ou 4,
    caractérisée en ce que
    la plaque de matériau isolant (10, 10') comporte deux découpes à travers lesquelles passe chaque fois un segment d'hélice (12) qui relie deux hélices de fil chauffant (8, 8', 9, 9') passant sur les deux faces de la plaque en matériau isolant (10, 10').
  6. Cartouche chauffante selon la revendication 5,
    caractérisée en ce que
    la plaque en matériau isolant (10, 10') comporte des découpes traversées chacune par une ou plusieurs hélices (12').
  7. Cartouche chauffante selon l'une des revendications 1 à 6,
    caractérisée en ce que
    des pinces de fixation (14, 14', 14") en un matériau isolant sont prévues le long des hélices de fil chauffant (8, 9, 8', 9'), ces pinces entourant les hélices de fil chauffant (8, 8', 9, 9') en étant fixées sur les bords longitudinaux de la plaque isolante (10, 10').
  8. Cartouche chauffante selon la revendication 7,
    caractérisée en ce que
    les pinces de fixation (14, 14', 14") sont munies de doigts de pincement (16, 17) pénétrant dans des encoches d'accrochage (18) de la plaque en matériau isolant (10, 10').
  9. Cartouche chauffante selon la revendication 4 ou 5,
    caractérisée en ce que
    les pinces de fixation (14) sont des pièces plates en forme de U avec des découpes (15) en forme de U dans lesquelles passent les hélices de fil chauffant (8, 9).
  10. Cartouche chauffante selon l'une des revendications 7 à 9,
    caractérisée en ce que
    les pinces de fixation (14') ont chacune deux découpes (15, 15') en forme de U traversées chacune par une hélice de fil chauffant (8, 8', 9, 9').
  11. Cartouche chauffante selon la revendication 1,
    caractérisée en ce que
    la cavité de préférence cylindrique du corps tubulaire (2) est subdivisée en secteurs de volume (31, 32, 33, 34) par des plaques de matériau isolant (10') qui se croisent au milieu, secteurs dans lesquels se trouve chaque fois une hélice de fil chauffant (8, 8', 9, 9'),
    * au moins l'une des plaques de matériau isolant (10') étant munie d'au moins un bord de renvoi éloigné du fond du corps tubulaire (2).
  12. Cartouche chauffante selon la revendication 11,
    caractérisée en ce qu'
    au moins l'une des plaques de matériau isolant (10') qui se croisent, comporte au moins une découpe (11) traversée par un segment d'hélice (12) qui relie deux hélices de fil chauffant (8, 8' ou 9, 9') respectivement sur les deux faces de la plaque de matériau isolant (10').
  13. Cartouche chauffante selon la revendication 11 ou 12,
    caractérisée en ce que
    la ou les arêtes de renvoi formées par l'arête d'extrémité du petit côté de la plaque en matériau isolant (10, 10') est tenue à distance du fond (3) du corps tubulaire (2) par une bague d'écartement, isolante.
  14. Cartouche chauffante selon la revendication 11,
    caractérisée en ce qu'
    au moins l'une des plaques en matériau isolant (10') qui se croisent, comporte au moins une découpe (11) traversée respectivement par une ou plusieurs hélices (12') des deux hélices de fil chauffant (8, 8', 9, 9') passant sur les deux faces de la plaque en matériau isolant (10').
  15. Cartouche chauffante selon l'une des revendications 11 à 14,
    caractérisée en ce que
    les plaques isolantes (10') se croisant en leur milieu sont assemblées par des fentes d'enfichage (35) qui sont chaque fois au milieu et symétriquement par rapport aux axes longitudinaux (36) et s'étendant sur au moins une demi-longueur (s).
  16. Cartouche chauffante selon la revendication 10,
    caractérisée par
    une première plaque isolante (10/1) qui, au niveau de son segment d'extrémité de chaque petit côté a des fentes d'enfichage (35') symétriques par rapport à son axe longitudinal, et ayant la même largeur sur ses faces opposées, avec perpendiculairement à ces faces des secondes plaques isolantes (10/2) munies de découpes (35/1) recevant les segments de la première plaque isolante (10/1) situés entre les fentes d'enfichage (35').
  17. Cartouche chauffante selon l'une des revendications 11 à 16,
    caractérisée en ce que
    les hélices de fil chauffant (8, 8', 9, 9') installées dans les secteurs de volume (31-34), sont fixées contre toute flexion radiale par des pinces de fixation (14") en un matériau isolant, ces pinces étant réparties sur la longueur (s) des hélices.
  18. Cartouche chauffante selon l'une des revendications 11 à 17,
    caractérisée en ce que
    des broches de raccordement (7, 7') de chaque fois deux hélices de fil chauffant (8, 8' ou 9, 9') passant sur les deux faces de la plaque isolante (10), sortent des faces frontales opposées du corps tubulaire (2).
  19. Cartouche chauffante selon l'une des revendications 1 à 18,
    caractérisée en ce que
    la ou les plaques isolantes (10, 10') sont en micanite ou en céramique ou en matière plastique.
  20. Cartouche chauffante selon la revendication 1,
    caractérisée en ce que
    le matériau isolant granulé (13) est en sable de quartz ou en un oxyde métallique ou en matière plastique.
EP06012918A 2005-07-26 2006-06-23 Cartouche chauffante comprimée Active EP1748679B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202005011686U DE202005011686U1 (de) 2005-07-26 2005-07-26 Verdichtete Heizpatrone

Publications (3)

Publication Number Publication Date
EP1748679A2 EP1748679A2 (fr) 2007-01-31
EP1748679A3 EP1748679A3 (fr) 2008-12-03
EP1748679B1 true EP1748679B1 (fr) 2011-11-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP06012918A Active EP1748679B1 (fr) 2005-07-26 2006-06-23 Cartouche chauffante comprimée

Country Status (4)

Country Link
US (1) US7592572B2 (fr)
EP (1) EP1748679B1 (fr)
AT (1) ATE533328T1 (fr)
DE (1) DE202005011686U1 (fr)

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DE1874589U (de) 1962-11-16 1963-06-27 Heraeus Schott Quarzschmelze Infrarotstrahler.
DE1515216A1 (de) 1963-01-21 1969-12-18 Thermal Syndicate Ltd Heizelement
GB1074532A (en) 1963-01-21 1967-07-05 Thermal Syndicate Ltd Improvemetns in the construction of heaters
US3310769A (en) * 1964-06-16 1967-03-21 Rama Corp Cartridge heater
FR1400035A (fr) * 1964-06-30 1965-05-21 Heraeus Schott Quarzschmelze Radiateur infra-rouge
DE7031974U (de) 1970-08-27 1973-01-11 Heinz Stegmeier Verdichtete heizpatrone.
DE2907870A1 (de) 1979-03-01 1980-09-04 Hotset Heizpatronen U Zubehoer Elektrischer rohrheizkoerper
US5095193A (en) * 1990-06-01 1992-03-10 Ogden Manufacturing Co. Cartridge heater having resilient retaining means
DE19716010C1 (de) 1997-04-17 1998-10-29 Tuerk & Hillinger Gmbh Elektrischer Mantelrohrheizkörper mit integriertem Temperaturfühler
EP1467599B1 (fr) * 2003-04-12 2008-11-26 Eichenauer Heizelemente GmbH & Co.KG Dispositif pour l'admission des éléments de chauffe en céramique et procédé pour la production de tels

Also Published As

Publication number Publication date
ATE533328T1 (de) 2011-11-15
DE202005011686U1 (de) 2005-10-06
EP1748679A3 (fr) 2008-12-03
EP1748679A2 (fr) 2007-01-31
US20070023418A1 (en) 2007-02-01
US7592572B2 (en) 2009-09-22

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