EP1545157B1 - Tube et procédé pour haubanner des éléments fonctionnels dans un tel tube - Google Patents

Tube et procédé pour haubanner des éléments fonctionnels dans un tel tube Download PDF

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Publication number
EP1545157B1
EP1545157B1 EP04029778A EP04029778A EP1545157B1 EP 1545157 B1 EP1545157 B1 EP 1545157B1 EP 04029778 A EP04029778 A EP 04029778A EP 04029778 A EP04029778 A EP 04029778A EP 1545157 B1 EP1545157 B1 EP 1545157B1
Authority
EP
European Patent Office
Prior art keywords
side walls
tube
tube according
wall areas
pressurization
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
Application number
EP04029778A
Other languages
German (de)
English (en)
Other versions
EP1545157A2 (fr
EP1545157A3 (fr
Inventor
Andreas Hamburger
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.)
Eichenauer Heizelemente GmbH and Co KG
BorgWarner Ludwigsburg GmbH
Original Assignee
Eichenauer Heizelemente GmbH and Co KG
Beru 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 Eichenauer Heizelemente GmbH and Co KG, Beru AG filed Critical Eichenauer Heizelemente GmbH and Co KG
Publication of EP1545157A2 publication Critical patent/EP1545157A2/fr
Publication of EP1545157A3 publication Critical patent/EP1545157A3/fr
Application granted granted Critical
Publication of EP1545157B1 publication Critical patent/EP1545157B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H05B3/40—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
    • H05B3/50—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating means
    • F24H9/1872—PTC resistor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/01—Mounting; Supporting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/017—Manufacturing methods or apparatus 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/02—Heaters using heating elements having a positive temperature coefficient

Definitions

  • the invention relates to a method for clamping functional elements in a hollow receiving means, such as a tube with two mutually and flat sides of the functional elements opposite, at least partially concave top wall areas. Furthermore, the invention relates to a pipe, in particular for receiving functional elements, such as PTC heating elements, with two mutually and flat sides of the functional elements opposite, at least partially concave top wall areas. Furthermore, the invention relates to uses of such a tube.
  • Electric heaters in which resistance heating elements in the form of PTC elements are used for generating a heating power, are known today in a variety of fields of technology, for example in the automotive industry.
  • the said heaters are used, for example, for heating vehicle interiors, as long as alternative heating methods using the engine cooling water as the heating medium due to insufficient engine heating not yet working efficiently.
  • the electric heater can be carried out both separately be integrated as well as in a flowing through the cooling water fins / tube block, for example, by a part of the cooling water-flowed tubes is replaced by PTC tubes.
  • individual PTC elements are regularly arranged in hollow receiving means, such as profile tubes, which are plastically deformed to clamp the PTC elements by pressurizing their cover walls.
  • two opposing cover walls exert a compressive pressure on the hollow receiving means, so that correspondingly an inner spacing of the cover walls decreases until they come into contact with the PTC elements received in the receiving means and set this.
  • a generic tube for use with an electrical heating element is known from US 4,942,289.
  • This heating element comprises a contact unit formed from at least one PTC element and contact plates resting on both sides thereof and a tubular housing, wherein the housing, when not pressed, has an inner wall facing convexly facing the contact arrangement with a finite radius of curvature.
  • a spring tension is built up, which is present as a pressing force on the contact surfaces of the PTC elements.
  • said heating devices regularly have heat-emitting fins in the form of fins or the like, which are connected to the heating tubes in a manner which is highly thermally conductive.
  • the lamella assembly must take place in a subsequent, additional process step, resulting in disadvantageously long production times and corresponding cost increases.
  • the invention has for its object to provide a method and a profile tube, which can overcome the disadvantages enumerated above.
  • this object is achieved in a method of the type mentioned above in that the functional elements are braced by pressurizing the substantially perpendicular to the concave top wall areas extending side walls.
  • the object is also achieved by a tube, which is characterized by further substantially perpendicular to the concave top wall portions extending further side walls, which are acted upon to reduce a clearance between the retracted top wall portions with a compression pressure.
  • the pressurization or the action of a compressive force is thus substantially perpendicular to the flat sides of the functional elements, exactly perpendicular to its surface normal to the other side walls - if they are flat - and exactly perpendicular to the flat sides of the functional elements stand, which does not have to be, then parallel to the surface normal of the other side walls.
  • the first partially concave preformed top walls are pressed against the functional element, so that this is braced in the pipe.
  • only a small pressing force is required according to the invention for clamping the receiving means (tubes), since no plastic deformation has to be achieved in the pressing direction. Accordingly, the tools to be used are simple.
  • the side walls are pressurized substantially in the direction of their surface normal, wherein accordingly the tube is preferably formed such that the side walls are pressurizable substantially in the direction of their surface normal.
  • the pressurization takes place substantially in the direction of the surface normal of the side walls, in particular, that the forces exerting the pressurization forces have a predominant or main component parallel to the surface normal of the side walls, although the forces are not exactly parallel to the surface normal.
  • the clamping of the functional elements is preferably such that the pressurization reduces a clear distance between the opposing top walls, with regions of the concave top wall areas approaching one another for clamping the functional elements.
  • a distance between partial sections of at least one concave top wall area is reduced by the application of pressure and that between these at least one attachment part, such as a metal lamella or rib, is permanently clamped. It is possible in this way to integrate the attachment of attachment parts in the pressing process.
  • an outwardly widening free space region with essentially an isosceles trapezoidal cross-section is defined prior to pressurization.
  • the free space area is preferably designed to accommodate at least one complementary end area of at least one attachment part, such as a metal lamella or rib.
  • the attachment part is substantially positively enclosed after pressurization by the cover walls of the concave top wall area and held in this way by clamping.
  • the profile tube according to the invention has rib elements in at least one of the cover or side wall regions which preferably have an extension component in the longitudinal direction of the profile tube.
  • the rib elements may also have an extension in cross-section substantially perpendicular to a local course of the cover and / or Have sidewall areas or the top and / or side walls.
  • profile tubes are generally suitable for providing a composite device of a number of profile tubes and connecting connecting parts, wherein the attachment parts are held by the profile tubes, and are preferably used in a radiator with an arrangement of heat-dissipating fins.
  • Fig. 1 shows an extruded, inventive profile tube 1 with a substantially rectangular cross-section.
  • a flat PTC heating element 2 consisting of a PTC resistor 2.1, a contact track 2.2, a ceramic insulation 2.3 and a contact frame 2.4 is arranged inside 1.1 of the profile tube 1.
  • the PTC heating element 2 in particular has flat sides 2a, 2b.
  • the structure of such PTC elements 2 is familiar to the person skilled in the art and is not the subject of this invention per se.
  • the profile tube 1 has top wall portions 1.2, 1.3 which are retracted inwardly relative to a strictly rectangular cross-section of the profile tube 1, i. show a concave training.
  • top wall portions 1.2, 1.3 of the profile tube 1 are outwardly expanding free space areas 1.4 defined, of which in Fig. 1 by way of example only one dashed line is shown.
  • the cover walls 1.5, 1.6 of the profile tube 1 have in the retracted, concave top wall portions 1.2, 1.3 an inner distance a, which is greater than a corresponding dimension a 'between the flat sides 2a, 2b of the PTC element 2.
  • the Profile tube 1 further side walls or side wall portions 1.7, 1.8, which extend substantially perpendicular to the concave top wall portions 1.2, 1.3 and whose clear distance b is greater than a corresponding dimension b 'of the PTC element 2, where: (b-b ')> (a-a').
  • the profile tube 1 also has along its outer contour rib members 3, which are perpendicular to the plane of the drawing, i. extend in the profile longitudinal direction and are aligned in cross section substantially perpendicular to a local extension direction of the cover and side walls 1.5-1.8.
  • the clamping of the PTC element 2 in the interior 1.1 of the profile tube 1 according to the invention is carried out by lateral pressure (arrows P) on the side walls 1.7, 1.8. This will be explained in more detail below with reference to FIGS. 3a, b.
  • FIG. 2a, b show a further possible embodiment of the profile tube 1 according to the invention, here initially (FIG. 2a) as a seamlessly drawn or welded tube with a circular cross section, which, as shown in FIG. 2b, for forming concave top wall regions 1.2, 1.3 (see Fig. 1) is to profile accordingly, for example using a suitable roller system (not shown here).
  • Fig. 3a, b show in detail the already mentioned pressing process by pressurization (arrows P) of the side walls 1.7, 1.8 of the profile tube according to the invention 1.
  • This is according to Fig. 3a, b substantially as already explained in Fig. 1, has but no ribs on.
  • concave top wall portions 1.2, 1.3 formed free spaces 1.4 are used in the subject of Fig. 3a, b respectively neck portions 4 in the form of flat metal fins.
  • a main body 4.1 Starting from a main body 4.1, these have an end region in the form of a projection 4.2, which first tapers conically in a first region 4.2a adjoining the main body 4.1 and subsequently widens slightly conically in a second region 4.2b, so that in FIG Area of a peak 4.2c of the projection 4.2 4.2d corners are formed.
  • a length L of the projection 4.2 is dimensioned larger than a insertion depth T of the top wall portions 1.2, 1.3, so that the attachment part 4 with its projection 4.2 in the free space area 1.4 can be introduced, the tip 4.2c each side wall 1.5, 1.6 touched without the main body 4.1 of the attachment part 4 in turn already with the side walls 1.5, 1.6 of the profile tube 1 comes into contact.
  • FIG. 3b the arrangement of Fig. 3a is shown again after the application of pressure P.
  • the pressing pressure P first causes the pressurized side walls 1.7, 1.8 to move towards each other while reducing their spacing b (FIG. 1).
  • the latter are in this case formed slightly convexly curved to form the largest possible contact surface for heat transfer with the PTC element 2 via its flat sides 2a, 2b on their inner sides 1.5a, 1.6a (cf., Fig. 1, 3a).
  • convexities 1.9 of the cover walls 1.5, 1.6 are formed in the retracted, concave top wall areas 1.2, 1.3, so that the formerly trapezoidal free space area 1.4 (cf., FIGS. 1, 3a) now has undercuts 1.10.
  • FIGS. 4a shows a side view of the profile tube 1 according to the invention according to the Fig. 3a, b with a plurality of mutually parallel aligned attachment parts 4 in the form of metal lamellae.
  • FIGS. 4b, c show sections through a profile tube-lamella arrangement according to FIG. 4a.
  • the embodiments according to FIGS. 4b and 4c differ in that the attachment parts 4 shown in FIG. 4c in the outer region 4.2b of the projection 4.2 have a substantially rectangular bend 4.2e, through which a heat-conducting contact between the attachment parts 4 and the profile tube 1 can be improved.
  • FIGS. 5a, 5b it is shown how a number of profile tubes 1 according to the invention with inserted PTC elements 2 can be connected to an assembled device via an arrangement of attachment parts 4, in the exemplary embodiment shown specifically to a heating element 5.
  • the overall structure of the heating element 5 shown in FIGS. 5a, b can be assembled beforehand and still be kept unstressed by means of a suitable holding tool (not shown). Subsequently, the bracing of the entire heater 5 by pressurizing the side walls 1.7, 1.8 of the profile tubes 1 in a single operation, as shown above with reference to FIGS. 1, 2b, 3a.
  • FIGs 6a, b show a further embodiment of the profile tube 1 according to the invention before or after the pressing (pressurization P, Figure 6a).
  • the concave configuration of the cover walls 1.5, 1.6 results from a cross-sectional two-legged construction with legs 1.5b, 1.5c and 1.6b, 1.6c, which include an obtuse angle ⁇ before pressing.
  • the side walls 1.7, 1.8 and the legs 1.5b, 1.6b are arranged in pairs at a slightly obtuse angle to each other.
  • zakken shame projections 3 ' are formed by the side walls 1.7, 1.8 and the legs 1.5c, 1.6c (Fig. 6a).

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Ceramic Engineering (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Claims (16)

  1. Procédé pour contraindre des éléments de fonctionnement dans un moyen de réception creux (1) présentant deux zones de parois de recouvrement (1.5, 1.6) au moins partiellement concaves, opposées l'une à l'autre et aux côtés plats des éléments de fonctionnement (2-2.4), caractérisé en ce que les éléments de fonctionnement (2-2.4) sont contraints par soumission à une pression des parois supplémentaires latérales (1.7, 1.8) s'étendant sensiblement perpendiculaires aux zones de parois de recouvrement concaves (1.5, 1.6).
  2. Procédé selon la revendication 1, caractérisé en ce que les parois latérales (1.7, 1.8) sont soumises à une pression sensiblement dans la direction générale de leur normale.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'en raison de la pression, un écartement des parois latérales (1.7, 1.8) sur lesquelles s'exerce la pression est réduit, des zones des parois de recouvrement concaves (1.5, 1.6) se rapprochant de ce fait l'une de l'autre pour serrer les éléments de fonctionnement (2-2.4).
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la pression réduit un écartement entre des portions (1.5a, 1.6a, 1.5b, 1.6b) au moins d'une des zones de parois de recouvrement concaves (1.5, 1.6) et en ce qu'on enserre entre elles à demeure au moins une pièce ajoutée (4) telle une lamelle ou une ailette ondulée métalliques.
  5. Tube (1) pour la réception d'éléments de fonctionnement, présentant deux zones de parois de recouvrement (1.2, 1.3) au moins partiellement concaves, opposées l'une à l'autre et aux côtés plats (2a, 2b) des éléments de fonctionnement, caractérisé par des parois supplémentaires latérales (1.7, 1.8) s'étendant sensiblement perpendiculaires aux zones de parois de recouvrement concaves (1.2, 1.3), pouvant être soumises à une pression (P) pour réduire un écartement (a) entre les zones de parois de recouvrement concaves (1.2, 1.3).
  6. Tube selon la revendication 5, caractérisé en ce que les parois latérales peuvent être soumises à pression sensiblement en direction de leur normale.
  7. Tube selon la revendication 5 ou 6, caractérisé en ce qu'avant une soumission à pression (P), une zone d'espace libre (1.4) s'élargissant vers l'extérieur et présentant une section correspondant sensiblement à un trapèze isocèle est définie par des parois de recouvrement (1.5, 1.6) des zones de parois de recouvrement concaves (1.2, 1.3).
  8. Tube selon l'une quelconque des revendications 5 à 7, caractérisé en ce que la zone d'espace libre (1.4) est conformée pour recevoir au moins une zone d'extrémité (4.2) complémentaire d'une pièce ajoutée (4), telle une lamelle ou une ailette ondulée métalliques.
  9. Tube selon la revendication 8, caractérisé en ce que les parois de recouvrement (1.5, 1.6) de la zone de parois de recouvrement concave (1.2, 1.3) entourent sensiblement à ajustement de forme la zone d'extrémité (4.2) de la pièce ajoutée (4) après réalisation de la pression (P), de sorte que celle-ci est maintenue enserrée.
  10. Tube selon l'une quelconque des revendications 5 à 8, caractérisé en ce que les parois de recouvrement (1.5, 1.6) des zones de parois de recouvrement concaves (1.2, 1.3) définissent des contre-dépouilles (1.10) pour recevoir des zones de coin (4.2d) complémentaires de la pièce ajoutée (4) après réalisation de la pression.
  11. Tube selon l'une quelconque des revendications 5 à 6, caractérisé en ce que les parois de recouvrement et/ou latérales (1.5-1.8) présentent des éléments d'ailettes (3).
  12. Tube selon la revendication 11, caractérisé en ce que les éléments d'ailettes (3) présentent une composante d'extension dans le sens longitudinal du tube (1).
  13. Tube selon la revendication 11 ou 12, caractérisé en ce que les éléments d'ailettes (3) présentent en section une extension sensiblement perpendiculaire à une direction locale des parois de recouvrement et/ou latérales (1.5-1.8).
  14. Utilisation d'un tube selon l'une quelconque des revendications 5 à 13 pour réaliser un dispositif (5) composé d'une pluralité de tubes (1) et de pièces ajoutées (4) reliant ceux-ci, les pièces ajoutées (4) étant maintenues par les tubes (1).
  15. Utilisation d'un tube selon l'une quelconque des revendications 5 à 14 dans un corps de chauffe (5) avec un arrangement d'ailettes (4) de dégagement de chaleur.
  16. Corps de chauffe avec un arrangement d'ailettes de dégagement de chaleur caractérisé par une pluralité de tubes (1) selon l'une quelconque des revendications 5 à 15.
EP04029778A 2003-12-20 2004-12-16 Tube et procédé pour haubanner des éléments fonctionnels dans un tel tube Expired - Lifetime EP1545157B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10360159 2003-12-20
DE10360159A DE10360159A1 (de) 2003-12-20 2003-12-20 Profilrohr und Verfahren zum Verspannen von Funktionselementen in einem solchen

Publications (3)

Publication Number Publication Date
EP1545157A2 EP1545157A2 (fr) 2005-06-22
EP1545157A3 EP1545157A3 (fr) 2005-10-12
EP1545157B1 true EP1545157B1 (fr) 2006-11-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP04029778A Expired - Lifetime EP1545157B1 (fr) 2003-12-20 2004-12-16 Tube et procédé pour haubanner des éléments fonctionnels dans un tel tube

Country Status (4)

Country Link
US (1) US7332693B2 (fr)
EP (1) EP1545157B1 (fr)
AT (1) ATE346475T1 (fr)
DE (2) DE10360159A1 (fr)

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FR3073036A1 (fr) * 2017-10-30 2019-05-03 Valeo Systemes Thermiques Tube pour dispositif de chauffage pour vehicule automobile a relief sur une paroi laterale
FR3083300B1 (fr) * 2018-06-28 2020-06-19 Valeo Systemes Thermiques Bloc de chauffage electrique
EP3647676B1 (fr) * 2018-10-29 2023-03-08 Mahle International GmbH Échangeur de chaleur pour un système de conditionnement d'air, en particulier d'un véhicule automobile
FR3091135A1 (fr) * 2018-12-19 2020-06-26 Valeo Systemes Thermiques Procédé de fabrication d’un bloc de chauffage et outil de déformation associé
DE102019108435B4 (de) * 2019-04-01 2025-02-06 Borgwarner Ludwigsburg Gmbh Verfahren zum Herstellen eines Heizstabs
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DE3677603D1 (de) * 1986-10-01 1991-03-28 David & Baader Dbk Spezfab Kaltleiter-ptc-heizkoerper.
EP0333906B1 (fr) * 1988-03-25 1993-10-20 David & Baader DBK Spezialfabrik elektrischer Apparate und Heizwiderstände GmbH Résistance chauffante à coefficient de température positif
DE3815306A1 (de) * 1988-05-05 1989-11-16 Eichenauer Gmbh & Co Kg F Elektrisches heizelement mit ptc-element
DE3942266C2 (de) * 1989-12-21 1997-01-30 Tuerk & Hillinger Gmbh PTC-Heizkörper
ES2099767T3 (es) * 1992-06-11 1997-06-01 David & Baader Dbk Spezfab Metodo para producir una resistencia calefactora con coeficiente de temperatura positivo.
DE29720357U1 (de) * 1997-01-17 1998-02-26 Siemens Matsushita Components GmbH & Co. KG, 81541 München Kaltleiteranordnung
US6180930B1 (en) * 1999-12-29 2001-01-30 Chia-Hsiung Wu Heater with enclosing envelope

Also Published As

Publication number Publication date
DE10360159A1 (de) 2005-07-21
EP1545157A2 (fr) 2005-06-22
US20050144896A1 (en) 2005-07-07
DE502004002082D1 (de) 2007-01-04
EP1545157A3 (fr) 2005-10-12
US7332693B2 (en) 2008-02-19
ATE346475T1 (de) 2006-12-15

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