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EP0575649A1 - Radiator - Google Patents

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Publication number
EP0575649A1
EP0575649A1 EP92110544A EP92110544A EP0575649A1 EP 0575649 A1 EP0575649 A1 EP 0575649A1 EP 92110544 A EP92110544 A EP 92110544A EP 92110544 A EP92110544 A EP 92110544A EP 0575649 A1 EP0575649 A1 EP 0575649A1
Authority
EP
European Patent Office
Prior art keywords
spars
radiator according
heat
elements
bulges
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.)
Granted
Application number
EP92110544A
Other languages
German (de)
French (fr)
Other versions
EP0575649B1 (en
Inventor
Franz Bohlender
Josef David
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.)
DBK David and Baader GmbH
Original Assignee
DBK David and Baader 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 DBK David and Baader GmbH filed Critical DBK David and Baader GmbH
Priority to EP92110544A priority Critical patent/EP0575649B1/en
Priority to AT92110544T priority patent/ATE145981T1/en
Priority to ES92110544T priority patent/ES2098394T3/en
Priority to DE59207626T priority patent/DE59207626D1/en
Priority to JP16381693A priority patent/JP3274234B2/en
Publication of EP0575649A1 publication Critical patent/EP0575649A1/en
Priority to US08/349,457 priority patent/US5562844A/en
Application granted granted Critical
Publication of EP0575649B1 publication Critical patent/EP0575649B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/18Arrangement or mounting of grates or heating means
    • F24H9/1854Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863Arrangement or mounting of electric heating means
    • F24H9/1872PTC resistor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00Air heaters
    • F24H3/02Air heaters with forced circulation
    • F24H3/04Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/18Arrangement or mounting of grates or heating means
    • F24H9/1854Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863Arrangement or mounting of electric heating means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/001Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core

Definitions

  • the invention relates to a radiator according to the preamble of claim 1.
  • a radiator is known from EP-A-0 350 528.
  • the first spars of the holding frame each consist of an inner band in contact with the slats, a parallel, spaced-apart, rigid outer rail and a wave spring arranged in between, which is supported on the outer rail and the inner band against presses the reversal points of the adjacent slats.
  • the invention has for its object to provide a radiator of the type mentioned, which ensures a sufficient and large area pressure of the fins on the heat-emitting elements and which is easy to set up and install.
  • the invention differs from the above-mentioned prior art mainly by the novel design of the first spars. Instead of a three-part arrangement, the invention realizes a one-part arrangement for each respective spar, which eliminates two manufacturing processes and facilitates assembly. In addition, good dimensional contact and thus good heat extraction is achieved even with dimensional tolerances in the PTC elements.
  • the stiffness of the bars can be increased by a suitable profile design, which provides that the outer legs of the bars are each bent inwards.
  • a rail of substantially M-shaped cross section can be arranged in the open cross section of each of the first spars, which rail is riveted or welded to the outer legs of the spar on its outer legs. This rail gives the spar a particularly high degree of rigidity that resists deflection.
  • the drawing shows a radiator from the side, where to see where electrical heating elements are, these are shown in section.
  • the radiator consists of a holding frame 1 made of first, longitudinal bars 2 and second, transverse bars 3.
  • the first and second bars 2 and 3 are connected to one another at their ends and thus span a plane.
  • the electrical heating elements 4, which are preferably PTC elements, and the heat-conducting elements 5 form a multilayer structure, which is clamped between the two opposing first bars 2 of the frame 1.
  • the pressure that presses the aforementioned elements together is applied by resilient bulges 6, which are formed on the first spars 2.
  • the force caused by these bulges is absorbed by the second frame bars 3.
  • the PTC elements 4 are each held in a plastic frame 7, which has a slightly smaller thickness than the PTC elements 4, and has windows or openings 8 in which the PTC elements 4 are held.
  • the plastic frame 7 On its longitudinal edges, the plastic frame 7 has raised edges 9, which prevent the heating elements 5 and the plastic frame 7 from sliding against one another.
  • the first, longitudinal spars 2 of the frame 1 consist of an essentially U-shaped rail made of a resilient material, the legs of which are flat, the outer legs 11 being bent inwards.
  • the inwardly bent sections 12 of the outer legs 11 end tightly above a flat central leg 13.
  • the inwardly bent sections 12 give the spar 2 great rigidity.
  • the center leg 13 is extended at both ends (only one end is shown in FIG. 4) by a flag 10, from which a resilient tongue 14 is released, the free end of which points towards the spar 2.
  • a cross-sectionally M-shaped rail 15 is inserted into the free interior of the cross-section U-shaped spar 2, the outer legs of which several points 16 are riveted or welded to the outer legs 11 of the spar 2. This construction also ensures a desired rigidity for the spar 2.
  • FIG. 5 also shows two metal strips 31 which are welded to the outer leg 11 in the end region of the U-shaped spar 2. They extend to the corresponding outer legs of the other spar 2, which is not shown in FIG. 5, and they are welded to it under mechanical prestressing of the overall arrangement in order to absorb the spring forces produced by the bulges 6. The second spars 3 can then be pushed largely tension-free onto the arrangement held together by the sheet metal stiffeners.
  • the flag 10 is inserted into a cavity in the adjacent second spar 3, and the free end of its tongue 14 is locked behind an extension 17 which is formed on a section of the second spar 3 that overlaps the flag 10.
  • a nose 18 extends into the free space between the side legs of the first spar 2, which presses on the middle leg 13 and thus presses the bulges 6 onto the adjacent heat-conducting element 5.
  • the nose 18 has on its underside a guide channel for the tongue 14 which merges into a ramp 20 which leads to the attachment 17.
  • FIG. 7 shows the arrangement of FIGS. 1 and 6 from above in the assembled state. You can see the nose 18 on the second spar 3, which engages between the side legs 11 of the first spar 2 and thereby pushes the inner portions 12 away from it somewhat laterally and which presses on the center leg 13.
  • Fig. 8 shows that the apexes at the reversal areas 21 of the slat band are as flat as possible.
  • the apex area is designed to be slightly arched in order to ensure that the lamellar strip abuts against an adjacent sheet metal strip 23 under pressure.
  • FIG. 9 shows a preferred embodiment of a heat-conducting element.
  • This consists of two metal strips 23 and 24, which are each angled twice at one end and are arranged symmetrically with respect to one another, so that they enclose an approximately rectangular space in a plane-parallel area of the metal strips 23 and 24, in which there is a lamellar strip 26, which is carried out, for example, in the manner of FIG. 8.
  • the two metal strips 23 and 24 are connected at their abutting sections with rivets or the like, which are symbolically represented here by 27. At one end, a terminal lug 28 is riveted at the same time.
  • FIG. 10a and 10b show details of the riveting of the sheet metal strips 23 and 24 of the heat-conducting element according to FIG. 9. It can be seen in FIG. 10a that on one sheet metal strip 23 a rivet sleeve 29 is integrally formed by deep drawing, which has a suitable bore in the penetrates another sheet metal strip 24 and is jammed by widening its free end in the bore on the sheet metal strip 24. A comparable connection of the metal strips 23 and 24 is also provided on the other side, as shown in FIG.
  • the contact terminal lug 28 being provided in a comparable manner with an integrally formed rivet sleeve 30 which is inserted through the rivet sleeve 29 and flanged at its end , in order to thus the terminal lug 28 on the Determine heat-conducting element and at the same time establish electrical contact.
  • the sheet metal strips 23 and 24 can be slightly flanged up at their edge, as is shown by way of example in the sectional illustration in FIG. 11, in order to prevent the slat strip 26 from slipping sideways.
  • the heat-conducting elements 5 are in direct contact with the electrical heating elements 4.
  • the heat therefore runs from the electrical heating elements 4 through one of the sheet metal strips 23 and 24 to the adjacent lamella strip, which thus absorbs the heat and can release it into the surrounding air.
  • two such heat-conducting elements 5 can be arranged between two adjacent levels of heating elements. Since the heat-conducting elements 5 contact the PTC elements 4 directly, they can be used for their power supply, for which purpose the connection lug 28 is provided. It can be seen in FIG. 1 that with the aid of two such heat-conducting elements 5 a group of heating elements 4 can be supplied with current.
  • the connecting lugs 28 extend through openings 29 in the second spars 30, which are made of an electrically insulating material, in particular plastic material.
  • the heating elements 5 can, as FIG. 9 clearly shows, be assembled into prefabricated units, and these units then only need to be stacked with the heating elements 4 held by the plastic frames 7 and each other and with the first bars 1, as shown in FIG. 1 shows, and then the side the second spars 3 are pushed from the side, their lugs 18 engaging in the spaces between the side legs 11 of the spars 2. It is understood that for this purpose the stack of spars, Heating elements and heat-conducting elements must be compressed so that the lugs 18 can be brought into position without difficulty. When pushed together, the tongues 14 lock behind the shoulders 17 in the bars 3 and secure the arrangement in its position. None needs to be soldered, riveted or screwed for assembly.
  • FIGS. 12 and 13 Alternative embodiments for the first spars 2 are shown in FIGS. 12 and 13.
  • Fig. 12 shows the formation of the side legs of the spars with an upper bead-shaped edge
  • Fig. 13 shows an embodiment in which the inner portions 12 of the side legs 11 run approximately parallel to the outer portions of the side legs 11.
  • Fig. 14 shows an M-shaped rail for use between the outer legs of the cross-sectionally U-shaped spars 2 according to the type of FIG. 5, wherein the connecting leg 32 between the two outer legs 33 of the rail 15 is largely flat and a longitudinal one in the middle Has bead 34.
  • This rail 15 is also, as shown in FIG. 5, to be fixed to the associated spar 2 by means of welding spots 16.
  • the lamellar strip 26 is insulated from the adjacent metal strips 23 (or 24) by an insulating film 35, for example made of Kapton.
  • the plastic frame 7 holding the electrical heating elements 4 has very strongly raised edges which at least largely cover the edges of the metal strips 23 so that they form a protection against accidental contact, so that the radiator equipped in this way is touched with the hands can without touching live parts.
  • 16 shows an embodiment of the invention in which the space between two adjacent metal strips 23 and 24 is filled on the outside by a casting compound 36, with which the electrical heating elements 4 are protected against environmental influences, in particular against splash water.
  • Another modification possibility is to dispense with the metal strips 23 and 24 for holding the lamella strips 26. These then abut directly on the outer bumps 17 and, if necessary, on one another.
  • the electrical heating elements can be contacted by means of separate sheet metal strips which are arranged between the lamella strips and the heating elements and are provided with connecting lugs which lead to the outside, comparable to the connecting lugs 28.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Resistance Heating (AREA)
  • Thermistors And Varistors (AREA)
  • Direct Air Heating By Heater Or Combustion Gas (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Surgical Instruments (AREA)

Abstract

In an electric radiator, in which there are arranged in a frame (1) heat-emitting elements (4) containing PTC thermistors and, adjoining these elements, lamellae which are supported by two opposite frame members (2, 3) in such a manner that they exert pressure on the PTC elements, the said frame members (2, 3) consist of rails of U-shaped cross-section with flat legs, the central legs of which in each case have longitudinally running convexities (6), the longitudinal edges of which are cut free in relation to the central leg in order to impart spring properties to the convexities (6). <IMAGE>

Description

Die Erfindung bezieht sich auf einen Radiator nach dem Oberbegriff des Anspruchs 1. Ein solcher Radiator ist aus der EP-A-0 350 528 bekannt.The invention relates to a radiator according to the preamble of claim 1. Such a radiator is known from EP-A-0 350 528.

Bei dem bekannten Radiator bestehen die ersten Holme des Halterahmens jeweils aus einem mit den Lamellen in Berührung stehenden inneren Band, einer parallel im Abstand dazu verlaufenden, steifen äußeren Schiene und einer dazwischen angeordneten Wellenfeder, die sich an der äußeren Schiene abstützt und das innere Band gegen die Umkehrstellen der benachbarten Lamellen drückt.In the known radiator, the first spars of the holding frame each consist of an inner band in contact with the slats, a parallel, spaced-apart, rigid outer rail and a wave spring arranged in between, which is supported on the outer rail and the inner band against presses the reversal points of the adjacent slats.

Diese Konstruktion ist relativ aufwendig, wegen der Mehrteiligkeit der einzelnen Holme ist ihre Montage schwierig, und darüberhinaus ist der Wärmekontakt nicht optimal, da sich insbesondere bei Dickentoleranzen in den PTC'S an manchen Stellen kein guter Flächenkontakt einstellt.This construction is relatively complex, due to the multipart nature of the individual spars, it is difficult to assemble, and moreover the thermal contact is not optimal, since in certain places there is no good surface contact, particularly with thickness tolerances in the PTC'S.

Der Erfindung liegt die Aufgabe zugrunde, einen Radiator der eingangs genannten Art anzugeben, der einen ausreichenden und großflächigen Druck der Lamellen an den wärmeabgebenden Elementen sicherstellt und der einfach aufgebaut und montierbar ist.The invention has for its object to provide a radiator of the type mentioned, which ensures a sufficient and large area pressure of the fins on the heat-emitting elements and which is easy to set up and install.

Diese Aufgabe wird durch die im Anspruch 1 angegebene Erfindung gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.This object is achieved by the invention specified in claim 1. Advantageous embodiments of the invention are the subject of the dependent claims.

Die Erfindung unterscheidet sich vom obengenannten Stand der Technik hauptsächlich durch die neuartige Gestaltung der ersten Holme. Anstelle einer dreiteiligen Anordnung realisiert die Erfindung eine einteilige Anordnung für jeden betreffenden Holm, was zwei Fertigungsvorgänge entfallen läßt und die Montage erleichtert. Darüberhinaus wird auch bei Maßtoleranzen in den PTC-Elementen ein guter Flächenkontakt und damit eine gute Wärmeauskopplung erreicht.The invention differs from the above-mentioned prior art mainly by the novel design of the first spars. Instead of a three-part arrangement, the invention realizes a one-part arrangement for each respective spar, which eliminates two manufacturing processes and facilitates assembly. In addition, good dimensional contact and thus good heat extraction is achieved even with dimensional tolerances in the PTC elements.

Die Steifigkeit der Holme kann durch eine passende Profilgestaltung vergrößert werden, die vorsieht, daß die äußeren Schenkel der Holme jeweils nach innen umgebogen sind. Bei einer anderen Ausführungsform kann in den offenen Querschnitt jedes der ersten Holme eine Schiene von im wesentlichen M-förmigem Querschnitt angeordnet sein, die an ihren Außenschenkeln mit den Außenschenkeln des Holms vernietet oder verschweißt ist. Diese Schiene verleiht dem Holm ein besonders hohes Maß an Steifigkeit, die einer Durchbiegung widersteht.The stiffness of the bars can be increased by a suitable profile design, which provides that the outer legs of the bars are each bent inwards. In another embodiment, a rail of substantially M-shaped cross section can be arranged in the open cross section of each of the first spars, which rail is riveted or welded to the outer legs of the spar on its outer legs. This rail gives the spar a particularly high degree of rigidity that resists deflection.

Die Erfindung wird nachfolgend unter Bezugnahme auf in den Zeichnungen dargestellte Ausführungsformen näher erläutert.The invention is explained in more detail below with reference to embodiments shown in the drawings.

Es zeigt:

Fig. 1
einen Radiator nach der Erfindung von der Seite, teilweise geschnitten,
Fig. 2
den Radiator nach Fig. 1 von der Stirnseite,
Fig. 3
eine Draufsicht auf einen Kunststoffrahmen mit darin angeordneten PTC-Elementen,
Fig. 4
eine Teildarstellung eines ersten Holmes in einer ersten Ausführungsform,
  • Fig. 5 eine Teildarstellung eines ersten Holmes gemäß einer zweiten Ausführungsform;
  • Fig. 6 eine vergrößerte Schnittdarstellung des oberen Eckbereichs von Fig. 1;
  • Fig. 7 eine Teildarstellung des Radiators nach Fig. 1 von oben;
  • Fig. 8 eine Einzelheit bezüglich eines anderen Ausführungsbeispiels eines Lamellenbandes;
  • Fig. 9 eine Ausführungsform eines Wärmeleitelements;
  • Fig. 10a und 10b Details eines Wärmeleiters nach Fig. 9;
  • Fig. 11 eine Querschnittsdarstellung eines Wärmeleitelements ähnlich Fig. 9;
  • Fig. 12 eine Teildarstellung im Schnitt einer Ausführungsform einer Holmschiene, und
  • Fig. 13 eine Teildarstellung im Schnitt einer weiteren Ausführungsform einer Holmschiene.
  • Fig. 14 eine M-förmige Schiene nach Art von Fig.5;
  • Fig. 15 ein Wärmeleitelement, und
  • Fig. 16 eine Ausführungsform mit Vergußmasse.
It shows:
Fig. 1
a radiator according to the invention, partially cut from the side,
Fig. 2
1 from the front,
Fig. 3
2 shows a plan view of a plastic frame with PTC elements arranged therein,
Fig. 4
2 shows a partial illustration of a first spar in a first embodiment,
  • 5 shows a partial illustration of a first spar according to a second embodiment;
  • Fig. 6 is an enlarged sectional view of the upper corner area of Fig. 1;
  • Fig. 7 is a partial view of the radiator of Fig. 1 from above;
  • 8 shows a detail with respect to another exemplary embodiment of a lamellar belt;
  • 9 shows an embodiment of a heat-conducting element;
  • 10a and 10b details of a heat conductor according to FIG. 9;
  • FIG. 11 shows a cross-sectional illustration of a heat-conducting element similar to FIG. 9;
  • Fig. 12 is a partial view in section of an embodiment of a spar rail, and
  • Fig. 13 is a partial representation in section of a further embodiment of a spar rail.
  • 14 shows an M-shaped rail in the manner of FIG. 5;
  • 15 shows a heat-conducting element, and
  • Fig. 16 shows an embodiment with potting compound.

Die Zeichnung zeigt einen Radiator von der Seite, wobei zur Verdeutlichung, wo sich elektrische Heizelemente befinden, diese geschnitten dargestellt sind. Der Radiator besteht aus einem Halterahmen 1 aus ersten, längslaufenden Holmen 2 und zweiten, querlaufenden Holmen 3. Die ersten und zweiten Holme 2 und 3 sind an ihren Enden miteinander verbunden und spannen so eine Ebene auf. Parallel zu den ersten Rahmenholmen 2 und senkrecht zu der von dem Rahmen 1 aufgespannten Ebene verlaufen parallel zueinander mehrere Ebenen, in denen sich elektrische Heizelemente 4 befinden, die Wärme an benachbarte Wärmeleitelemente 5 abgeben, die später noch zu beschreiben sind. Die elektrischen Heizelemente 4, die vorzugsweise PTC-Elemente sind, und die Wärmeleitelemente 5 bilden einen mehrschichtigen Aufbau, der zwischen den beiden sich gegenüberstehenden ersten Holmen 2 des Rahmens 1 eingespannt ist. Der Druck, der die vorgenannten Elemente aufeinanderdrückt, wird von federnden Ausbauchungen 6 aufgebrachtt, die an den ersten Holmen 2 ausgebildet sind. Die von diesen Ausbauchungen hervorgerufene Kraft wird von den zweiten Rahmenholmen 3 aufgenommen.The drawing shows a radiator from the side, where to see where electrical heating elements are, these are shown in section. The radiator consists of a holding frame 1 made of first, longitudinal bars 2 and second, transverse bars 3. The first and second bars 2 and 3 are connected to one another at their ends and thus span a plane. Parallel to the first frame spars 2 and perpendicular to the plane spanned by the frame 1, several planes run parallel to one another, in which electrical heating elements 4 are located, give off the heat to adjacent heat-conducting elements 5, which will be described later. The electrical heating elements 4, which are preferably PTC elements, and the heat-conducting elements 5 form a multilayer structure, which is clamped between the two opposing first bars 2 of the frame 1. The pressure that presses the aforementioned elements together is applied by resilient bulges 6, which are formed on the first spars 2. The force caused by these bulges is absorbed by the second frame bars 3.

Die PTC-Elemente 4 sind jeweils zu mehreren in einem Kunststoffrahmen 7 gehalten, der eine etwas geringere Dicke hat, als die PTC-Elemente 4, und der Fenster oder Durchbrüche 8 aufweist, in denen die PTC-Elemente 4 gehalten sind. An seinen Längsrändern weist der Kunststoffrahmen 7 erhöhte Ränder 9 auf, die ein gegenseitige Verrutschen von Heizelementen 5 und Kunststoffrahmen 7 verhindern.The PTC elements 4 are each held in a plastic frame 7, which has a slightly smaller thickness than the PTC elements 4, and has windows or openings 8 in which the PTC elements 4 are held. On its longitudinal edges, the plastic frame 7 has raised edges 9, which prevent the heating elements 5 and the plastic frame 7 from sliding against one another.

Die ersten, längslaufenden Holme 2 des Rahmens 1 bestehen gemäß Fig. 4 aus einer im wesentlichen U-förmigen Schiene aus einem federnden Material, deren Schenkel flach sind, wobei die Außenschenkel 11 nach innen umgebogen sind. Die nach innen gebogenen Abschnitte 12 der Außenschenkel 11 enden dicht über einem flachen Mittenschenkel 13. Die nach innen gebogenen Abschnitte 12 verleihen dem Holm 2 eine große Steifigkeit. Der Mittenschenkel 13 ist an beiden Enden (in Fig. 4 ist nur ein Ende dargestellt) durch eine Fahne 10 verlängert, aus der eine federnde Zunge 14 ausgeklinkt ist, deren freies Ende gegen den Holm 2 weist.4, the first, longitudinal spars 2 of the frame 1 consist of an essentially U-shaped rail made of a resilient material, the legs of which are flat, the outer legs 11 being bent inwards. The inwardly bent sections 12 of the outer legs 11 end tightly above a flat central leg 13. The inwardly bent sections 12 give the spar 2 great rigidity. The center leg 13 is extended at both ends (only one end is shown in FIG. 4) by a flag 10, from which a resilient tongue 14 is released, the free end of which points towards the spar 2.

Bei der Alternative nach Fig. 5 ist in den freien Innenraum des im Querschnitt U-förmigen Holms 2 eine im Querschnitt M-förmige Schiene 15 eingesetzt, deren Außenschenkel an mehreren Punkten 16 mit den Außenschenkeln 11 des Holms 2 vernietet oder verschweißt sind. Auch diese Konstruktion gewährleistet eine gewünschte Steifigkeit für den Holm 2.In the alternative according to FIG. 5, a cross-sectionally M-shaped rail 15 is inserted into the free interior of the cross-section U-shaped spar 2, the outer legs of which several points 16 are riveted or welded to the outer legs 11 of the spar 2. This construction also ensures a desired rigidity for the spar 2.

In Fig. 5 erkennt man ferner zwei Blechstreifen 31, die im Endbereich des U-förmigen Holms 2 an dessen Außenschenkel 11 angeschweißt sind. Sie erstrecken sich bis zu den entsprechenden Außenschenkeln des anderen Holms 2, der in Fig. 5 nicht dargestellt ist, und sie werden an diesen unter mechanischer Vorspannung der Gesamtanordnung angeschweißt, um die von den Ausbauchungen 6 hervorgebrachten Federkräfte aufzunehmen. Die zweiten Holme 3 lassen sich dann weitgehend spannungsfrei auf die von den Blechsteifen zusammengehaltene Anordnung aufschieben.5 also shows two metal strips 31 which are welded to the outer leg 11 in the end region of the U-shaped spar 2. They extend to the corresponding outer legs of the other spar 2, which is not shown in FIG. 5, and they are welded to it under mechanical prestressing of the overall arrangement in order to absorb the spring forces produced by the bulges 6. The second spars 3 can then be pushed largely tension-free onto the arrangement held together by the sheet metal stiffeners.

Wie Fig. 1 und in vergrößerter Schnittdarstellung Fig. 6 zeigen, ist die Fahne 10 in einen Hohlraum im benachbarten zweiten Holm 3 eingeschoben, und das freie Ende ihrer Zunge 14 ist hinter einem Ansatz 17 verrastet, der an einem Abschnitt des zweiten Holms 3 ausgebildet ist, der die Fahne 10 übergreift. Von diesem Abschnitt erstreckt sich eine Nase 18 in den freien Raum zwischen den Seitenschenkeln des ersten Holms 2, die auf dessen Mittenschenkel 13 drückt und somit die Ausbauchungen 6 auf das benachbarte Wärmeleitelement 5 drückt. Zum leichteren Zusammenbau weist die Nase 18 an ihrer Unterseite einen Führungskanal für die Zunge 14 auf, der in eine Rampe 20 übergeht, die zu dem Ansatz 17 führt.As shown in FIG. 1 and in an enlarged sectional view in FIG. 6, the flag 10 is inserted into a cavity in the adjacent second spar 3, and the free end of its tongue 14 is locked behind an extension 17 which is formed on a section of the second spar 3 that overlaps the flag 10. From this section, a nose 18 extends into the free space between the side legs of the first spar 2, which presses on the middle leg 13 and thus presses the bulges 6 onto the adjacent heat-conducting element 5. For easier assembly, the nose 18 has on its underside a guide channel for the tongue 14 which merges into a ramp 20 which leads to the attachment 17.

Fig. 7 zeigt die Anordnung nach den Fig. 1 und 6 von oben in montiertem Zustand. Man erkennt die Nase 18 an dem zweiten Holm 3, die zwischen die Seitenschenkel 11 des ersten Holms 2 greift und dabei die inneren Abschnitte 12 davon etwas seitlich wegdrückt und die auf den Mittenschenkel 13 drückt.Fig. 7 shows the arrangement of FIGS. 1 and 6 from above in the assembled state. You can see the nose 18 on the second spar 3, which engages between the side legs 11 of the first spar 2 and thereby pushes the inner portions 12 away from it somewhat laterally and which presses on the center leg 13.

Die Einzelheit in Fig. 8 zeigt, daß die Scheitel an den Umkehrbereichen 21 des Lamellenbandes möglichst flach ausgeführt sind. Es kann hierzu günstig sein, wenn der Scheitelbereich geringfügig gewölbt gestaltet ist, um unter Druck eine satte Anlage des Lamellenbandes an einem benachbarten Blechband 23 zu gewahrleisten.The detail in Fig. 8 shows that the apexes at the reversal areas 21 of the slat band are as flat as possible. For this purpose, it can be advantageous if the apex area is designed to be slightly arched in order to ensure that the lamellar strip abuts against an adjacent sheet metal strip 23 under pressure.

Fig. 9 zeigt eine bevorzugte Ausführungsform eines Wärmeleitelements. Dieses besteht aus zwei Blechbändern 23 und 24, die jeweils an einem Ende zweifach abgewinkelt sind und die punktsymmetrisch zueinander angeordnet sind, so daß sie in einem planparallelen Bereich der Blechbänder 23 und 24 einen etwa rechteckigen Zwischenraum umschließen, in welchem sich ein Lamellenband 26 befindet, das beispielsweise in der Art der Fig. 8 ausgeführt ist. Die beiden Blechbänder 23 und 24 sind an ihren aneinander anliegenden Abschnitten mit Nieten oder dergleichen verbunden, die hier symbolisch mit 27 dargestellt sind. Am einen Ende ist dabei zugleich eine Anschlußfahne 28 angenietet.9 shows a preferred embodiment of a heat-conducting element. This consists of two metal strips 23 and 24, which are each angled twice at one end and are arranged symmetrically with respect to one another, so that they enclose an approximately rectangular space in a plane-parallel area of the metal strips 23 and 24, in which there is a lamellar strip 26, which is carried out, for example, in the manner of FIG. 8. The two metal strips 23 and 24 are connected at their abutting sections with rivets or the like, which are symbolically represented here by 27. At one end, a terminal lug 28 is riveted at the same time.

Die Fig. 10a und 10b zeigen Einzelheiten der Vernietung der Blechbänder 23 und 24 des Wärmeleitelements nach Fig. 9. Man erkennt in Fig. 10a, daß an dem einen Blechband 23 eine Niethülse 29 durch Tiefziehen integral ausgebildet ist, die eine passende Bohrung in dem anderen Blechband 24 durchdringt und durch Aufweiten ihres freien Endes in der Bohrung an dem Blechband 24 verklemmt ist. Eine vergleichbare Verbindung der Blechbänder 23 und 24 ist auch an der anderen Seite vorgesehen, wie Fig. 10b zeigt, wobei in vergleichbarer Weise die Kontaktanschlußfahne 28 mit einer integral ausgebildeten Niethülse 30 versehen ist, die durch die Niethülse 29 gesteckt und an ihrem Ende umgebördelt ist, um somit die Anschlußfahne 28 an dem Wärmeleitelement festzulegen und zugleich elektrischen Kontakt herzustellen.10a and 10b show details of the riveting of the sheet metal strips 23 and 24 of the heat-conducting element according to FIG. 9. It can be seen in FIG. 10a that on one sheet metal strip 23 a rivet sleeve 29 is integrally formed by deep drawing, which has a suitable bore in the penetrates another sheet metal strip 24 and is jammed by widening its free end in the bore on the sheet metal strip 24. A comparable connection of the metal strips 23 and 24 is also provided on the other side, as shown in FIG. 10b, the contact terminal lug 28 being provided in a comparable manner with an integrally formed rivet sleeve 30 which is inserted through the rivet sleeve 29 and flanged at its end , in order to thus the terminal lug 28 on the Determine heat-conducting element and at the same time establish electrical contact.

Die Blechbänder 23 und 24 können an ihrem Rand leicht hochgebördelt sein, wie die Schnittdarstellung von Fig. 11 beispielhaft zeigt, um eine seitliches Verrutschen des Lamellenbandes 26 zu verhindern.The sheet metal strips 23 and 24 can be slightly flanged up at their edge, as is shown by way of example in the sectional illustration in FIG. 11, in order to prevent the slat strip 26 from slipping sideways.

Wie Fig. 1 zeigt, liegen die Wärmeleitelemente 5 unmittelbar an den elektrischen Heizelementen 4 an. Die Wärme verläuft daher von den elektrischen Heizelementen 4 durch eines der Blechbänder 23 und 24 zum benachbarten Lamellenband, das die Wärme somit aufnimmt und an die umgebende Luft abgeben kann. Zwischen zwei benachbarten Ebenen von Heizelementen können, wie Fig. 1 zeigt, zwei solcher Wärmeleitelemente 5 angeordnet sein. Da die Wärmeleitelemente 5 die PTC-Elemente 4 direkt kontaktieren, können sie für deren Stromversorgung herangezogen werden, wozu die genannte Anschlußfahne 28 vorgesehen ist. Man erkennt in Fig. 1, daß mit Hilfe zweier solcher Wärmeleitelemente 5 jeweils eine Gruppe von Heizelementen 4 mit Strom versorgt werden kann. Die Anschlußfahnen 28 erstrecken sich durch Durchbrüche 29 in den zweiten Holmen 30, die aus einem elektrisch isolierenden Material, insbesondere Kunststoffmaterial, hergestellt sind.As shown in FIG. 1, the heat-conducting elements 5 are in direct contact with the electrical heating elements 4. The heat therefore runs from the electrical heating elements 4 through one of the sheet metal strips 23 and 24 to the adjacent lamella strip, which thus absorbs the heat and can release it into the surrounding air. As shown in FIG. 1, two such heat-conducting elements 5 can be arranged between two adjacent levels of heating elements. Since the heat-conducting elements 5 contact the PTC elements 4 directly, they can be used for their power supply, for which purpose the connection lug 28 is provided. It can be seen in FIG. 1 that with the aid of two such heat-conducting elements 5 a group of heating elements 4 can be supplied with current. The connecting lugs 28 extend through openings 29 in the second spars 30, which are made of an electrically insulating material, in particular plastic material.

Die Heizelemente 5 können, wie Fig. 9 anschaulich zeigt, zu vorgefertigten Einheiten zusammengestellt werden, und diese Einheiten brauchen dann nur mehr mit den von den Kunststoffrahmen 7 gehaltenen Heizelementen 4 und gegenseitig sowie mit den ersten Holmen 1 gestapelt zu werden, wie es Fig. 1 zeigt, und anschließend werden von der Seite die seitlichen zweiten Holme 3 von der Seite aufgeschoben, wobei ihre Nasen 18 in die Zwischenräume zwischen den Seitenschenkeln 11 der Holme 2 greifen. Es versteht sich, daß zu diesem Zweck der Stapel aus Holmen, Heizelementen und Wäremleitelementen zusammengedrückt werden muß, damit die Nasen 18 unschwierig in Position gebracht werden können. Beim Zusammenschieben verrasten die Zungen 14 hinter den Ansätzen 17 in den Holmen 3 und sichern die Anordnung in ihrer Position. Es braucht somit zum Zusammenbau nichts gelötet, genietet oder geschraubt zu werden.The heating elements 5 can, as FIG. 9 clearly shows, be assembled into prefabricated units, and these units then only need to be stacked with the heating elements 4 held by the plastic frames 7 and each other and with the first bars 1, as shown in FIG. 1 shows, and then the side the second spars 3 are pushed from the side, their lugs 18 engaging in the spaces between the side legs 11 of the spars 2. It is understood that for this purpose the stack of spars, Heating elements and heat-conducting elements must be compressed so that the lugs 18 can be brought into position without difficulty. When pushed together, the tongues 14 lock behind the shoulders 17 in the bars 3 and secure the arrangement in its position. Nothing needs to be soldered, riveted or screwed for assembly.

Alternative Ausführungsformen für die ersten Holme 2 sind in den Fig. 12 und 13 dargestellt. Fig. 12 zeigt die Ausbildung der seitlichen Schenkel der Holme mit einem oberen wulstförmigen Rand, während Fig. 13 eine Ausführungsform zeigt, bei der die innenliegenden Abschnitte 12 der Seitenschenkel 11 etwa parallel zu den äußeren Abschnitten der Seitenschenkel 11 verlaufen.Alternative embodiments for the first spars 2 are shown in FIGS. 12 and 13. Fig. 12 shows the formation of the side legs of the spars with an upper bead-shaped edge, while Fig. 13 shows an embodiment in which the inner portions 12 of the side legs 11 run approximately parallel to the outer portions of the side legs 11.

Fig. 14 zeigt eine M-förmige Schiene zum Einsatz zwischen die Außenschenkel der im Querschnitt U-förmigen Holme 2 nach Art der Fig. 5, wobei der Verbindungsschenkel 32 zwischen den beiden Außenschenkeln 33 der Schiene 15 weitgehend flach ist und in der Mitte eine längslaufende Sicke 34 aufweist. Diese Schiene 15 ist ebenfalls, wie in Fig. 5 dargestellt, mittels Schweißpunkten 16 an dem zugehörigen Holm 2 festzulegen.Fig. 14 shows an M-shaped rail for use between the outer legs of the cross-sectionally U-shaped spars 2 according to the type of FIG. 5, wherein the connecting leg 32 between the two outer legs 33 of the rail 15 is largely flat and a longitudinal one in the middle Has bead 34. This rail 15 is also, as shown in FIG. 5, to be fixed to the associated spar 2 by means of welding spots 16.

Fig. 15 beschreibt eine Ausführungsform eines Wärmeleitelements, bei dem das Lamellenband 26 gegenüber den benachbarten Blechbändern 23 (bzw. 24) durch eine Isolierfolie 35, beispielsweise aus Kapton isoliert ist. Der die elektrischen Heizelemente 4 haltende Kunststoffrahmen 7 weist sehr stark erhöhte Ränder auf, die die Ränder der Blechbänder 23 zumindest weitestgehend so weit überdecken, daß sie einen Berührungsschutz bilden, so daß der in dieser Weise ausgerüstete Radiator mit den Händen berührt werden kann, ohne daß man mit spannungsführenden Teilen in Berührun gelangt.15 describes an embodiment of a heat-conducting element in which the lamellar strip 26 is insulated from the adjacent metal strips 23 (or 24) by an insulating film 35, for example made of Kapton. The plastic frame 7 holding the electrical heating elements 4 has very strongly raised edges which at least largely cover the edges of the metal strips 23 so that they form a protection against accidental contact, so that the radiator equipped in this way is touched with the hands can without touching live parts.

Fig. 16 zeigt eine Ausführungsform der Erfindung, bei der der Zwischenraum zwischen zwei benachbarten Blechbändern 23 und 24 außen von einer Vergußmasse 36 ausgefüllt ist, womit die elektrischen Heizelemente 4 gegen Umwelteinflüsse, insbesondere gegen Spritzwasser, geschützt sind.16 shows an embodiment of the invention in which the space between two adjacent metal strips 23 and 24 is filled on the outside by a casting compound 36, with which the electrical heating elements 4 are protected against environmental influences, in particular against splash water.

Eine weitere Modifikationsmöglichkeit besteht darin, auf die Blechbänder 23 und 24 zum Halten der Lamellenbänder 26 zu verzichten. Diese stoßen dann direkt an die Aubauchungen 17 und gegebenenfalls aneinander an. Die Kontaktierung der elektrischen Heizelemente kann in diesem Falle über gesonderte Blechbänder erfolgen, die zwischen den Lamellenbändern und den Heizelementen angeordnet sind und mit nach außen geführten Anschlußfahnen versehen sind, vergleichbar den Anschlußfahnen 28.Another modification possibility is to dispense with the metal strips 23 and 24 for holding the lamella strips 26. These then abut directly on the outer bumps 17 and, if necessary, on one another. In this case, the electrical heating elements can be contacted by means of separate sheet metal strips which are arranged between the lamella strips and the heating elements and are provided with connecting lugs which lead to the outside, comparable to the connecting lugs 28.

Claims (18)

Radiator, bestehend aus einem ebenen Halterahmen (1) aus ersten und zweiten, miteinander verbundenen Holmen (2, 3) und mehreren von diesen gehaltenen, sich parallel zu den ersten Holmen (2) zwischen den zweiten Holmen (3) erstreckenden, flachen, länglichen elektrischen Heizelementen (4), die in mehreren Ebenen angeordnet sind, die parallel zu den ersten Holmen (2) und senkrecht zu der von dem Halterahmen (1) aufgespannten Ebene verlaufen, mit Wärmeleitelementen (5) zwischen benachbarten Ebenen von Heizelementen (4), jeweils enthaltend wenigstens ein im wesentlichen zickzackförmig verlaufendes Lamellen-Blechband (26) mit im wesentlichen geraden Abschnitten (21) zwischen zwei angrenzenden Umkehrbereichen (22), die in parallelen Reihen angeordnet sind, wobei wenigstens die eine Reihe der Umkehrbereiche (21) an eine Heizelementebene angrenzt und von dort Wärme aufnimmt und die Wärmeleitelemente (5) zwischen den beiden Reihen der Umkehrbereiche (21) unter einem mechanischen Druck zur Sicherstellung eines guten Wärmeübergangs zu den wenigstens einen Umkehrbereichen (22) stehen, der von in den ersten Holmen (2) angeordneten Federeinrichtungen (17) hervorgebracht wird, dadurch gekennzeichnet, daß die ersten Holme (2) jeweils aus einer im Querschnitt im wesentlichen U-förmigen Schiene aus federndem Material mit flachen Schenkeln (11, 13) bestehen, von denen der mittlere Schenkel (Mittenschenkel) (13) mehrere hintereinander angeordnete, längliche, von dem U-Querchnitt vorstehende Ausbauchungen (17) im mittleren Bereich seines Querschnitts aufweist, deren seitliche Begrenzungen von dem den Mittenschenkel (13) bildenden Material der Schiene freigeschnitten sind, und die ersten Holme (2) mit den Ausbauchungen (17) eine Reihe der Umkehrstellen eines benachbarten Wärmeleitelements (5) federnd abstützt.Radiator, consisting of a flat holding frame (1) made up of first and second, interconnected spars (2, 3) and a plurality of them held, extending parallel to the first spars (2) between the second spars (3), flat, elongated electrical heating elements (4) which are arranged in several planes, which run parallel to the first spars (2) and perpendicular to the plane spanned by the holding frame (1), with heat-conducting elements (5) between adjacent planes of heating elements (4), each containing at least one essentially zigzag-shaped lamellar sheet metal strip (26) with essentially straight sections (21) between two adjacent reversing areas (22) which are arranged in parallel rows, at least one row of the Reversal areas (21) adjoining a heating element level and absorbing heat from there and the heat conducting elements (5) between the two rows of the reversing areas (21) are under a mechanical pressure to ensure good heat transfer to the at least one reversing areas (22), which from in the first spars (2) arranged spring means (17) is produced, characterized in that the first spars (2) each consist of a cross-sectionally substantially U-shaped rail made of resilient material with flat legs (11, 13), of which the middle leg (middle leg) (13) has a plurality of successively arranged, elongated bulges (17) protruding from the U cross section in the central region of its cross section, the lateral boundaries of which are cut free from the material of the rail forming the middle leg (13), and the first spars (2) with the bulges (17) are a number of the reversal points of an adjacent heating element resiliently supports telements (5). Radiator nach Anspruch 1, dadurch gekennzeichnet, daß die Ausbauchungen (17) gegenüber der von der Außenseite des Mittenschenkels (13) definierten Ebene um eine Distanz vorstehen, die etwa der zweifachen Materialdicke des Mittenschenkels (12) entspricht.Radiator according to claim 1, characterized in that the bulges (17) protrude from the plane defined by the outside of the center leg (13) by a distance which corresponds approximately to twice the material thickness of the center leg (12). Radiator nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Ausbauchungen (17) eine Länge aufweisen, die etwa so groß ist, wie die Länge der von ihnen mit Druck beaufschlagten Heizelemente (4).Radiator according to claim 1 or 2, characterized in that the bulges (17) have a length which is approximately as long as the length of the heating elements (4) which they pressurize. Radiator nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Seitenschenkel (11) der ersten Holme (2) an ihrem oberen Ende nach innen und unten abgewinkelt sind.Radiator according to one of the preceding claims, characterized in that the side legs (11) of the first bars (2) are angled inwards and downwards at their upper end. Radiator nach Anspruch 4, dadurch gekennzeichnet, daß die nach innen gerichteten Abschnitte (12) der Seitenschenkel (11) dicht über dem Mittenschenkel (13) enden.Radiator according to claim 4, characterized in that the inwardly directed sections (12) of the side legs (11) end closely above the center leg (13). Radiator nach einem der Ansprüche 4 und 5, dadurch gekennzeichnet, daß die freien Ränder der nach innen gerichteten Abschnitte (12) der Seitenschenkel (11) über den Schnittlinien der Ausbauchungen (17) liegen.Radiator according to one of claims 4 and 5, characterized in that the free edges of the inwardly directed sections (12) of the side legs (11) lie above the cutting lines of the bulges (17). Radiator nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß in dem freien Raum, der zwischen den Schenkeln (11,13) der ersten Holme (2) jeweils ausgebildet ist, eine im Querschnitt etwa M-förmige Schiene (15) angeordnet ist, deren Außenschenkel mit den Seitenschenkeln (11) des zugehörgen Holms (2) verchweißt oder vernietet sind.Radiator according to one of claims 1 to 3, characterized in that in the free space which is formed between the legs (11, 13) of the first spars (2) in each case an approximately M-shaped rail (15) is arranged in cross section , whose outer legs are welded or riveted to the side legs (11) of the associated spar (2). Radiator nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die die ersten Holme (2) bildenden Schienen an beiden Enden jeweils eine Verlängerung des Mittenschenkels (13) in Form einer flachen Fahne (10) aufweisen, aus der eine Zunge (14) augeklinkt ist, deren freies Ende gegen die Mitte des Holms (2) weist und die in die Richtung hochsteht, in der sich die Seitenschenkel (11) über den Mittenschenkel (13) der Schiene erheben, und daß die zweiten Holme (3) in beiden Endbereichen jeweils Ansätze (17) aufweisen, die über die Fahnen (14) greifen und hinter den Zungen (14) verrastet sind, welche Ansätze (17) jeweils eine gegen die Mitte der ersten Holme (2) gerichtete Nase (18) aufweisen, die auf dem Mittenschenkel (13) aufliegt und diesen gegen die von den Ausbauchungen (17) hervorgerufene Federkraft abstützt.Radiator according to one of the preceding claims, characterized in that the rails forming the first spars (2) each have an extension of the center leg (13) at both ends in the form of a flat flag (10) from which a tongue (14) is notched , the free end of which points towards the center of the spar (2) and which stands up in the direction in which the side legs (11) rise above the center leg (13) of the rail, and that the second spars (3) in each of the two end regions Have lugs (17) which grip over the flags (14) and are locked behind the tongues (14), which lugs (17) each have a nose (18) directed towards the center of the first spars (2), which on the Middle leg (13) rests and supports it against the spring force caused by the bulges (17). Radiator nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Wärmeleitelemente (5) jeweils aus zwei planparallel im Abstand punktsymmetrisch zueinander angeordneten Blechbändern (23, 24) bestehen, deren eine Enden zur Definition des gegenseitigen Abstandes der planparallelen Abschnitte zweifach abgewinkelt sind, zwischen denen sich das Lamellenband (26) befindet.Radiator according to one of the preceding claims, characterized in that the heat-conducting elements (5) each consist of two sheet-metal strips (23, 24) which are arranged plane-parallel and spaced apart in a point-symmetrical manner, one end of which is angled twice to define the mutual distance between the plane-parallel sections, between which the lamella band (26) is located. Radiator nach Anspruch 9, dadurch gekennzeichnet, daß die Ränder der Blechbänder (23, 24) in dem planparallelen Bereich gegen das Lamellenband (26) hochgebörtelt sind, um dieses zwischen den planparallelen Abschnitten der Blechbänder (23, 24) gegen seitliches Verrutschen zu sichern.Radiator according to claim 9, characterized in that the edges of the sheet metal strips (23, 24) are flared up in the plane-parallel area against the lamella band (26) in order to secure it between the plane-parallel sections of the sheet metal strips (23, 24) against slipping sideways. Radiator nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Heizelemente (4) PTC-Elemente sind, die in einem Kunststoffrahmen (7) mit Ausschnitten (8) zur Aufnahme der PTC-Elemente (4) gehalten sind, dessen Dicke geringer als die der PTC-Elemente (4) ist.Radiator according to one of the preceding claims, characterized in that the heating elements (4) are PTC elements which are held in a plastic frame (7) with cutouts (8) for receiving the PTC elements (4), the thickness of which is less than that the PTC elements (4). Radiator nach Anspruch 11, wenn abhängig von einem der Ansprüche 9 und 10, dadurch gekennzeichnet, daß die Kunststoffrahmen (7) an ihren Längsrändern einen erhöhten Rand (9) zum Sichern der Wärmeleitelemente (5) gegen seitliches Verrutschen aufweisen.Radiator according to Claim 11, if dependent on one of Claims 9 and 10, characterized in that the plastic frames (7) have a raised edge (9) on their longitudinal edges for securing the heat-conducting elements (5) against slipping sideways. Radiator nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß die Umkehrbereiche (22) des Lamellen-Blechbandes (26) jeweils im wesentlichen flach ausgebildet sind und zwei benachbarte Umkehrbereiche (22) seitlich aneinander anstoßen.Radiator according to one of claims 1 to 12, characterized in that the reversing areas (22) of the lamellar sheet metal strip (26) are each formed essentially flat and two adjacent reversing areas (22) abut one another laterally. Radiator nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Seitenschenkel (11) der ersten Holme (2) an ihrem Rand, wo der innere Abschnitt (12) anschließt, wulstförmig gebogen sind.Radiator according to one of the preceding claims, characterized in that the side legs (11) of the first spars (2) are bead-shaped at their edge, where the inner section (12) adjoins. Radiator nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die beiden ersten Holme (2) an ihren äußeren Enden jeweils von Blechbändern (31) zusammengehalten sind, die die von den Ausbauchungen (17) hervorgerufenen Federkräfte aufnehmen.Radiator according to one of the preceding claims, characterized in that the two first spars (2) are each held together at their outer ends by sheet metal strips (31) which absorb the spring forces caused by the bulges (17). Radiator nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Heizelemente (4) durch eine Vergußmasse (36) gegen Umgebungseinflüsse geschützt sind.Radiator according to one of the preceding claims, characterized in that the heating elements (4) are protected against environmental influences by a casting compound (36). Radiator nach einem der Ansprüche 9 bis 12, dadurch gekennzeichnet, daß bei jedem Wärmeleitelement (5) das Lamellenband (26) gegenüber den Blechbändern (23, 24) durch eine elektrisch isolierende, gut wärmeleitfähige Folie (35) isoliert ist.Radiator according to one of claims 9 to 12, characterized in that in each heat-conducting element (5) the lamellar strip (26) is insulated from the sheet-metal strips (23, 24) by an electrically insulating, highly heat-conductive film (35). Radiator nach Anpruch 12, dadurch gekennzeichnet, daß die Ränder (9) der Kunststoffrahmen (7) so weit erhöht sind, daß die Blechbänder (23, 24) gegen manuelle Berührung gechützt sind.Radiator according to claim 12, characterized in that the edges (9) of the plastic frame (7) are raised to such an extent that the metal strips (23, 24) are protected against manual contact.
EP92110544A 1992-06-23 1992-06-23 Radiator Expired - Lifetime EP0575649B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP92110544A EP0575649B1 (en) 1992-06-23 1992-06-23 Radiator
AT92110544T ATE145981T1 (en) 1992-06-23 1992-06-23 RADIATOR
ES92110544T ES2098394T3 (en) 1992-06-23 1992-06-23 RADIATOR.
DE59207626T DE59207626D1 (en) 1992-06-23 1992-06-23 radiator
JP16381693A JP3274234B2 (en) 1992-06-23 1993-06-10 Radiator
US08/349,457 US5562844A (en) 1992-06-23 1994-12-05 Ptc heater radiator with frame members applying pressure to heaters

Applications Claiming Priority (1)

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EP92110544A EP0575649B1 (en) 1992-06-23 1992-06-23 Radiator

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EP0575649A1 true EP0575649A1 (en) 1993-12-29
EP0575649B1 EP0575649B1 (en) 1996-12-04

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US (1) US5562844A (en)
EP (1) EP0575649B1 (en)
JP (1) JP3274234B2 (en)
AT (1) ATE145981T1 (en)
DE (1) DE59207626D1 (en)
ES (1) ES2098394T3 (en)

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EP0616486A1 (en) * 1993-03-17 1994-09-21 Texas Instruments Incorporated Heater apparatus and process for heating a fluid stream
EP1061776A1 (en) 1999-06-15 2000-12-20 David &amp; Baader DBK Spezialfabrik elektrischer Apparate und Heizwiderstände GmbH Heating device specially made for heating air
EP1164264A1 (en) * 2000-06-14 2001-12-19 DBK David + Baader GmbH Blowby heater
EP1574803A2 (en) 2004-02-27 2005-09-14 Marin Camara, Miguel Modular electric radiator
WO2008032662A1 (en) 2006-09-13 2008-03-20 Calsonic Kansei Corporation Electric heater and its manufacturing method
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EP1164264A1 (en) * 2000-06-14 2001-12-19 DBK David + Baader GmbH Blowby heater
US7482557B2 (en) 2002-01-15 2009-01-27 Dbk David + Baader Gmbh Lamella type radiator element having foldable projections and a notch
EP1574803A2 (en) 2004-02-27 2005-09-14 Marin Camara, Miguel Modular electric radiator
WO2008032662A1 (en) 2006-09-13 2008-03-20 Calsonic Kansei Corporation Electric heater and its manufacturing method
DE102006053525B3 (en) * 2006-11-07 2008-05-08 Evo Elektroheizungen Gmbh Electric heater for e.g. tram, has brackets comprising fixing region and holding region, and lamellas inserted into retaining recesses using plug connectors, fixed to brackets and held at retaining device
EP2211589A1 (en) * 2009-01-23 2010-07-28 Behr GmbH & Co. KG Heat exchanger
EP2211590A1 (en) * 2009-01-23 2010-07-28 Behr GmbH & Co. KG Heat exchanger
CN101949584A (en) * 2009-01-23 2011-01-19 贝洱两合公司 Heat exchanger
CN101949584B (en) * 2009-01-23 2014-12-10 贝洱两合公司 Heat exchanger
EP2276321A1 (en) * 2009-07-17 2011-01-19 Behr France Rouffach SAS Heat exchanger
EP2276321B1 (en) 2009-07-17 2017-04-05 Mahle Behr France Rouffach S.A.S Heat exchanger
EP2602567A1 (en) * 2011-12-05 2013-06-12 Behr France Rouffach S.A.R.L. Electric heating device
FR3032388A1 (en) * 2015-02-10 2016-08-12 Valeo Systemes Thermiques ELECTRICAL HEATING DEVICE
FR3032389A1 (en) * 2015-02-10 2016-08-12 Valeo Systemes Thermiques ELECTRICAL HEATING DEVICE
WO2016128398A1 (en) * 2015-02-10 2016-08-18 Valeo Systemes Thermiques Electric heating device
WO2016128399A1 (en) * 2015-02-10 2016-08-18 Valeo Systemes Thermiques Electric heating device
DE112016000688B4 (en) 2015-02-10 2022-10-06 Valeo Systemes Thermiques Electric heater
WO2017085269A1 (en) * 2015-11-20 2017-05-26 Dbk David + Baader Gmbh Radiator arrangement for an electric heater, and electric heater

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DE59207626D1 (en) 1997-01-16
JP3274234B2 (en) 2002-04-15
ATE145981T1 (en) 1996-12-15
EP0575649B1 (en) 1996-12-04
JPH0719781A (en) 1995-01-20
US5562844A (en) 1996-10-08
ES2098394T3 (en) 1997-05-01

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