EP0665943B1 - Plate radiator - Google Patents

Plate radiator Download PDF

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Publication number
EP0665943B1
EP0665943B1 EP94900002A EP94900002A EP0665943B1 EP 0665943 B1 EP0665943 B1 EP 0665943B1 EP 94900002 A EP94900002 A EP 94900002A EP 94900002 A EP94900002 A EP 94900002A EP 0665943 B1 EP0665943 B1 EP 0665943B1
Authority
EP
European Patent Office
Prior art keywords
side wall
radiator
plate
collecting channels
channels
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
EP94900002A
Other languages
German (de)
French (fr)
Other versions
EP0665943A1 (en
Inventor
Dennis M. Webster
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.)
Stelrad Radiatorenwerke GmbH
Original Assignee
Stelrad Radiatorenwerke GmbH
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Publication of EP0665943A1 publication Critical patent/EP0665943A1/en
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Publication of EP0665943B1 publication Critical patent/EP0665943B1/en
Anticipated expiration legal-status Critical
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/03Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
    • F28D1/0308Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other
    • F28D1/0325Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another
    • 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
    • F28F9/26Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
    • F28F9/262Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators
    • F28F9/268Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators by permanent joints, e.g. by welding
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0035Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for domestic or space heating, e.g. heating radiators

Definitions

  • the invention relates to a plate radiator with at least one radiator plate formed from a front side wall and a rear wall welded to it, with water channels which are formed in the front side wall and in the rear side wall and which run alongside one another and which run across two longitudinally parallel edges of the radiator plate, transversely to the water channels mentioned and only in the rear side wall molded channels with each other and with the connecting piece of the radiator plate, as well as with connecting pieces provided for connecting several radiator plates, if necessary, wherein the collecting channels are welded to the connecting pieces of the radiator plate and with optionally provided connecting pieces.
  • the connecting pieces for the inlet and outlet of the heat transfer medium which is generally water
  • connecting pieces, which connect the individual radiator plates to one another in the case of plate radiators which comprise several radiator plates are made by hand or welded with welding robots. This is a process which considerably increases the production outlay and can hardly be incorporated into the automated production of the radiator plates, in the context of which the radiator plates are formed from sheet steel and joined together by pressure welding.
  • the plate radiator according to the invention of the type mentioned at the outset is characterized in that the connecting pieces and the connection pieces which may be provided are welded to the connection points of the radiator plate located at the collecting ducts by electrical resistance pressure welding and into the only in the rear side wall of the respective radiator plate, which have a substantially trapezoidal cross-section, support rings with parallel, circular support surfaces of different diameters are inserted at the connection points of these connecting pieces, and here the smaller support surface in diameter on which the shorter parallel side of the trapezoidal cross-section is the zone of the rear side wall forming the collecting channels, the larger supporting surface in diameter lies at the location of the front side wall opposite this zone, in the plane of connection of the front side wall and rear side wall, and the lateral surface of the support rings runs approximately following the oblique sides of the trapezoidal cross section of the collecting channels formed by the rear side wall.
  • press marks can easily form at the point of the front wall opposite the welding point, but such press marks appear less as a result of the bulge provided at this point for the formation of a collecting channel in the front wall than on a substantially flat surface, of which only project the much smaller water channels, as is the case with a plate radiator of the type mentioned at the beginning; in addition, apparently less attention has been paid to avoiding such press marks in the known radiators, while special attention was paid to plate radiators of the type mentioned at the outset, even in small details, especially in the peripheral areas where the connecting pieces and connecting pieces are to be placed, and therefore So far, a complex welding of these sockets has been provided.
  • the special technique of the design according to the invention now enables a substantial reduction in the effort required for welding the connecting piece and connecting piece, without the advantageous and error-free appearance being impaired or endangered thereby.
  • An embodiment which is favorable with regard to the stability of the support rings and with regard to the force transmission during the pressure welding process is characterized in that the support rings are of a solid, truncated cone shape, the conical outer surface running on the oblique sides of the trapezoidal cross section of the collecting channels.
  • An embodiment which is advantageous with regard to the distribution of the pressure forces applied during the welding process in the region of the front wall of the radiator plate opposite the welding point and which is particularly advantageous with regard to the aim of avoiding the occurrence of press marks, is characterized in that the outer diameter of the larger supporting surface of the Support rings about 1.5 times the outer diameter of the support surface, which is smaller in diameter.
  • the axially extending passage of the support rings widens conically at least over part of its length towards the larger support surface in diameter.
  • the axially extending passage of the support rings has a cylindrical section adjoining the support surface with a smaller diameter and, following this, a cone-like shape to the support surface with a larger diameter has expanding section.
  • FIGS. 1 to 3 The embodiment of a plate radiator shown in FIGS. 1 to 3 consists of a single radiator plate 1, which is formed from a front side wall 2 and a rear side wall 3, which are welded together.
  • the channels 5 are connected via two collecting channels 6, 7 to one another and to the connecting pieces 8, 9 provided for the inlet and outlet of the heating medium on the radiator plate.
  • the collecting channels 6, 7 are formed by bulges 10, which are only molded into the rear wall 3. These bulges 10 or the collecting channels 6, 7 formed by these bulges run along mutually parallel edges 11, 12 of the radiator plate 1 transversely to the channels 5.
  • the collecting channels are delimited by the inner surface of the front side wall 2, which, apart from the bulges 4 forming the channels 5, follows the plane 13 in which the front side wall 2 and the rear side wall 3 are joined.
  • the visible side formed by the front side wall 2 is designed as a flat surface, from which only the bulges 4, which form the channels 5, protrude or protrude from the outer surface 14 forming the visible side.
  • the connecting pieces 8, 9 are welded at points 15 of the radiator plate 1 located on the collecting channels 6, 7 by electrical resistance pressure welding.
  • the collecting channels 6, 7 have a substantially trapezoidal cross section, and it are inserted in these collecting channels at the connection points 15 formed frustoconical, massive support rings 16, which hold back an impression of the lying in the area of the connection points 15, the collecting channels 6, 7 delimiting zones of the front wall 2 and the rear wall 3 under the pressure forces applied during the welding process.
  • the support rings 16 thus also secure the wall parts located at the welding points against deformation and thus contribute to the formation of precise and reliable welded connections.
  • the support rings 16 have mutually parallel annular support surfaces 17, 18, the support surface 17 having a smaller diameter, on which lies the zone 20 of the rear side wall 3 forming the shorter parallel side 19 of the trapezoidal cross section of the collecting channels 6, 7, and the support surface 18 which is larger in diameter the point 21 of the front side wall 2 lying opposite this zone 20 and located in the connecting plane 13 of the front side wall 2 and the rear side wall 3.
  • the course of the conical lateral surface 22 of the support rings 16 follows the inclined sides 23 of the trapezoidal cross section of the collecting channels 6, 7 formed by the rear wall 3.
  • connection points 15 are distributed in a simple and effective manner at the connection points 15 opposite points 21 of the front wall 2 is achieved, with the formation of the support rings a uniform distribution over the larger diameter support surface 18 and a reduction in surface pressure can be achieved.
  • the formation of press marks visible on the outside of the front wall can be largely counteracted.
  • the outer diameter 24 of the larger-diameter support surface 18 is approximately one and a half times the outer diameter 25 of the smaller-diameter support surface 17.
  • the support rings 16 have an axially extending passage 26 through which the flow of the medium from the connecting piece 8, 9 in question into the radiator or from the radiator into a connecting piece takes place. It is advantageous for the positioning of the support rings at the connection points 15 and for the formation of the connection to the connection pieces 8, 9, if the passage 26 has a cylindrical section 27 adjoining the smaller supporting surface 17, and it is advantageous for the flow connection of the passage 26 to the collecting duct in which the relevant support ring 16 is arranged if the passage 26 widens in a conical manner , ie has a conically widening section 28 towards the larger support surface 18 in diameter.
  • the distance between the support surfaces 18 and the opposing locations 21 of the front wall 2 can be selected so that the zones of the front wall 2 and the rear wall 3 delimiting the collecting channels deform only elastically during the pressure welding process until they rest against the support surfaces 17, 18 of the support rings 16 and after the welding process has ended, spring back into the position forming a distance between the support surfaces 18 and the opposite locations 21 of the front wall 2.
  • FIGS. 1 to 3 show an embodiment of a plate radiator formed from two radiator plates.
  • the radiator plates 1 are arranged with their rear side walls 3 facing one another and connected to one another by connecting pieces 29.
  • the two radiator plates 1 are provided in the same way as the embodiment shown in FIGS. 1 to 3 with channels 5 and collecting channels 6, 7, the collecting channels 6, 7 being formed by bulges 10 in the rear side walls 3 and the front side walls 2, with the exception of the the bulges 4 forming channels 5 run in the region of the collecting channels 6, 7 at the connecting plane 13, in which the front side wall 2 is joined to the rear side wall 3 of the radiator plate 1 concerned.
  • the connecting piece 29, which is a flow connection between the Manufacture two radiator plates 1, are welded to the plate radiators 1 at connection points 15 which lie on the bulges 10 of the rear side wall 3 forming the collecting channels 6, 7.
  • This welded joint is designed as a resistance pressure weld.
  • frustoconical support rings 16 are inserted into the collecting channels 6, 7, which are formed analogously to the embodiments according to FIGS. 1 to 3.
  • the radiator plates 1 can be provided with connecting pieces 8, 9 to form inlet and outlet connections for the heating medium.
  • the connecting pieces 29 can also be formed by providing connecting pieces 30 on the connecting pieces 29 to form the inlet and outlet connections.
  • Such connecting pieces can, as shown in FIG. 4, point downwards or point in other directions, in particular point horizontally.
  • connection pieces which, like the connection pieces 8, 9 in the embodiment according to FIGS. 1 to 3, are attached directly to the radiator plate or plates.
  • the support rings 31 inserted into the collecting channels in the radiator plate 1, of which only the collecting channel 6 is shown, are formed without cutting from flat material.
  • the support surface 17 of the support rings 31 with a smaller diameter is provided on the shorter parallel side 19 of the trapezoidal cross section of the zone 20 of the rear side wall 3 forming the relevant collecting duct, and that in diameter Larger support surface 18 of the support rings 31 at the location of the front wall 2 opposite this zone 20, which location lies in the connecting plane 13 of the front wall and rear wall 3.
  • the lateral surface 32 of the support rings 31 runs approximately following the inclined sides 23 of the trapezoidal cross section of the collecting channels formed by the rear side wall 3.
  • the stability of the support rings 31, in particular on the support surface 18, is increased by a small circumferential indentation 33.
  • the connecting piece of this plate radiator, from which the connecting piece 8 is shown in Fig. 5, are welded by electrical resistance pressure welding to the points 15 located on the collecting channels of the rear wall 3 of the radiator plate 1.
  • the openings 34 provided at these points 15 establish the connection from the connecting piece 8 to the interior of the radiator.
  • the edge 35 of the openings 34 is bent inwards, and the support rings 31 are inserted with their passage 36 onto this edge; the support rings, which are inserted between the front side wall and the rear side wall prior to the production of the welded connections and are thereby inserted onto the edge 35 of the openings 34 in question, are against lateral displacement with respect to the point at which the welded connection is made with the relevant connecting piece , secured.
  • the passage 36 widens towards the support surface 18.
  • the edge 35 can also be bent outwards in the passage 36, as indicated by the dashed line 37, so that the support rings are secured against unintentional loosening in the event of transport or other manipulations on the rear walls already provided with support rings.
  • connecting pieces which are often also called connecting sleeves, can also be parts of so-called connecting sets, which comprise connecting pieces, connecting pipes and usually also valves and form connections between standardized placed line connection points and the connection points provided on the radiator plates.
  • the radiator according to the invention can also be formed from more than two radiator plates, which are analog of the embodiment according to FIG. 4 are connected to one another by means of connecting pieces which establish a flow connection between the collecting channels provided in the individual radiator plates.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Led Device Packages (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Resistance Heating (AREA)

Abstract

A plate radiator has at least one radiator plate (1) constituted by a front wall (2) and a rear wall (3) soldered thereto. Mutually adjacent water channels (5) formed in the front wall (2) and in the rear wall (3) are mutually connected by collecting channels (6, 7) formed only in the rear wall (3). Connecting pipes (8, 9) and if required union pipes are soldered by electric resistance pressure welding on the collecting channels (6, 7) formed exclusively in the rear wall (3) of the radiator plate (1). In the connecting points between the pipes (8, 9) and the collecting channels (6, 7), which have a substantially trapezoidal cross section, are laid supporting rings (16) with mutually parallel ring segment-shaped bearing surfaces (17, 18) of different diameters. The bearing surface (17) having a smaller diameter lies on the rear wall (3) and the bearing surface (18) having a larger diameter lies on the front wall (2), in the connection plane between the front wall (2) and the rear wall (3) opposite the first bearing surface (17). The outer surface (22) of the bearing ring (16) approximately follows the slanting sides (23) of the trapezoidal collecting channels (6, 7). The passage (26) of the bearing rings (16) is preferably enlarged in the direction of the bearing surface (18) having the larger diameter.

Description

Die Erfindung bezieht sich auf einen Plattenradiator mit mindestens einer aus einer Vorderseitenwand und einer mit dieser verschweißten Rückseitenwand gebildeten Radiatorplatte mit in die Vorderseitenwand und in die Rückseitenwand eingeformten, nebeneinander verlaufenden Wasserkanälen, welche über zwei längs zueinander parallele Ränder der Radiatorplatte quer zu den genannten Wasserkanälen verlaufende und nur in die Rückseitenwand eingeformte Sammelkanäle miteinander und mit den Anschlußstutzen der Radiatorplatte, sowie mit gegebenenfalls zum Verbinden mehrerer Radiatorplatten miteinander vorgesehenen Verbindungsstutzen verbunden sind, wobei die Sammelkanäle mit den Anschlußstutzen der Radiatorplatte sowie mit gegebenenfalls vorgesehenen Verbindungsstutzen verschweißt sind.The invention relates to a plate radiator with at least one radiator plate formed from a front side wall and a rear wall welded to it, with water channels which are formed in the front side wall and in the rear side wall and which run alongside one another and which run across two longitudinally parallel edges of the radiator plate, transversely to the water channels mentioned and only in the rear side wall molded channels with each other and with the connecting piece of the radiator plate, as well as with connecting pieces provided for connecting several radiator plates, if necessary, wherein the collecting channels are welded to the connecting pieces of the radiator plate and with optionally provided connecting pieces.

Bei in den Handel gekommenen Radiatoren vorgenannter Art werden bislang die Anschlußstutzen für den Zulauf und Ablauf des Wärmeträgermediums, welches in der Regel Wasser ist, und auch Verbindungsstutzen, welche bei Plattenradiatoren, die mehrere Radiatorplatten umfassen, die einzelnen Radiatorplatten miteinander verbinden, von Hand aus oder mit Schweißrobotern angeschweißt. Dies ist ein den Herstellungsaufwand beträchtlich erhöhender Vorgang, der praktisch kaum in die automatisierte Fertigung der Radiatorplatten, im Rahmen derer die Radiatorplatten aus Stahlblech geformt und miteinander durch Preßschweißung verbunden werden, eingefügt werden kann.In the case of commercially available radiators of the aforementioned type, the connecting pieces for the inlet and outlet of the heat transfer medium, which is generally water, and also connecting pieces, which connect the individual radiator plates to one another in the case of plate radiators which comprise several radiator plates, are made by hand or welded with welding robots. This is a process which considerably increases the production outlay and can hardly be incorporated into the automated production of the radiator plates, in the context of which the radiator plates are formed from sheet steel and joined together by pressure welding.

Es ist ein Ziel der vorliegenden Erfindung, einen Plattenradiator eingangs erwähnter Art dahingehend auszubilden, daß die Anbringung der angeschweißten Anschlußstutzen, sowie der bei Radiatoren mit mehreren Platten vorgesehenen Verbindungsstutzen auf einfache Weise unter Berücksichtigung der speziellen Eigenheiten, die bei Plattenradiatoren der eingangs erwähnten Art vorliegen, in den Fertigungsablauf integriert werden kann, um einen wirtschaftlicheren Fertigungsablauf zu ermöglichen.It is an object of the present invention to design a plate radiator of the type mentioned at the outset in such a way that the attachment of the welded-on connecting pieces and of the connecting pieces provided for radiators with multiple plates is carried out in a simple manner, taking into account the special characteristics which are present in the case of plate radiators of the type mentioned at the beginning. can be integrated into the production process to enable a more economical production process.

Der erfindungsgemäße Plattenradiator eingangs erwähnter Art ist dadurch gekennzeichnet, daß die Anschlußstutzen und die gegebenenfalls vorgesehenen Verbindungsstutzen an an den Sammelkanälen gelegenen Anschlußstellen der Radiatorplatte durch elektrische Widerstands-Preßschweißung angeschweißt sind und in die lediglich in die Rückseitenwand der jeweiligen Radiatorplatte eingeformten Sammelkanäle, welche einen im wesentlichen trapezförmigen Querschnitt haben, an den Anschlußstellen dieser Stutzen Stützringe mit zueinander parallelen, kreisringförmigen Stützflächen unterschiedlichen Durchmessers eingelegt sind, und hierbei die im Durchmesser kleinere Stützfläche an der die kürzere Parallelseite des trapezförmigen Querschnittes der Sammelkanäle bildenden Zone der Rückseitenwand liegt, die im Durchmesser größere Stützfläche an der dieser Zone gegenüberliegenden, in der Verbindungsebene von Vorderseitenwand und Rückseitenwand gelegenen Stelle der Vorderseitenwand liegt und die Mantelfläche der Stützringe annähernd den durch die Rückseitenwand gebildeten Schrägseiten des Trapezquerschnittes der Sammelkanäle folgend verläuft. Durch diese Ausbildung kann der vorstehend angeführten Zielsetzung gut entsprochen werden. Es wird dabei durch die spezielle Form der an den Anschweißstellen der Anschlußstutzen und der gegebenenfalls vorgesehenen Verbindungsstutzen in die Sammelkanäle eingelegten Stützringe, welche ein Eindrücken der Radiatorwände unter dem Einfluß der hohen bei der Widerstands-Preßschweißung angewendeten Druckkräfte hintanhalten, eine sehr gute Verteilung der Druckkräfte an der Anliegestelle an der Vorderseitenwand der Radiatorplatte erzielt, so daß dort das Entstehen von Preßmarken vermieden ist, was bei einem Plattenradiator hier in Rede stehender Art besondere Bedeutung hat, da an den den Anschweißstellen der Anschlußstutzen und Verbindungsstutzen gegenüberliegenden Stellen der Vorderseitenwand keine zur Bildung eines Sammelkanals dienende Ausbuchtung geformt ist, sondern lediglich an der Verbindungsebene von Vorderseitenwand und Rückseitenwand verlaufende flache Wandbereiche der Vorderseitenwand und von diesen vorspringend verlaufende Wasserkanalausbuchtungen vorliegen. Hiezu kann erwähnt werden, daß bei einer solchen Ausbildung der Vorderseitenwand Preßmarken sehr störend in Erscheinung treten würden. Durch die erfindungsgemäße Ausbildung kann aber auf einfache Weise dem Entstehen solcher Preßmarken entgegengewirkt werden. Es ist weiter zu bemerken, daß die beim erfindungsgemäß ausgebildeten Plattenradiator vorgesehenen Stützringe eine einfache Form haben, welche leicht hergestellt werden kann.The plate radiator according to the invention of the type mentioned at the outset is characterized in that the connecting pieces and the connection pieces which may be provided are welded to the connection points of the radiator plate located at the collecting ducts by electrical resistance pressure welding and into the only in the rear side wall of the respective radiator plate, which have a substantially trapezoidal cross-section, support rings with parallel, circular support surfaces of different diameters are inserted at the connection points of these connecting pieces, and here the smaller support surface in diameter on which the shorter parallel side of the trapezoidal cross-section is the zone of the rear side wall forming the collecting channels, the larger supporting surface in diameter lies at the location of the front side wall opposite this zone, in the plane of connection of the front side wall and rear side wall, and the lateral surface of the support rings runs approximately following the oblique sides of the trapezoidal cross section of the collecting channels formed by the rear side wall. With this training, the above-mentioned objective can be met well. Due to the special shape of the support rings inserted at the welding points of the connecting pieces and the optionally provided connecting pieces into the collecting channels, which prevent the radiator walls from being pressed in under the influence of the high pressure forces used in resistance pressure welding, the pressure forces are very well distributed the abutment on the front wall of the radiator plate is achieved, so that the formation of press marks is avoided, which is of particular importance in the case of a plate radiator of the type in question here, since at the points of the front wall opposite the welded-on points of the connecting pieces and connecting pieces, none to form a collecting channel serving bulge is formed, but only flat wall areas of the front wall and the water channel bulges projecting therefrom are present on the connecting plane of the front wall and the rear wall . For this purpose it can be mentioned that with such a design of the front wall press marks would appear very annoying. However, the formation of such press marks can be counteracted in a simple manner by the design according to the invention. It should also be noted that the support rings provided in the plate radiator designed according to the invention have a simple shape which can be easily produced.

Es kann erwähnt werden, daß es bei anders ausgebildeten Plattenradiatoren (DE 31 14 287), bei denen zur Bildung der die Wasserkanäle miteinander verbindenden Sammelkanäle einander gegenüberliegend sowohl in der Rückseitenwand als auch in der Vorderseitenwand Ausbuchtungen vorgesehen sind, welche meist zur Verbindungsebene der Radiatorwände symmetrisch geformt sind, das Anschweißen von Anschlußstutzen und Verbindungsstutzen mittels Widerstands- Preßschweißung bekannt ist, wobei auch in die Sammelkanäle an den Schweißstellen Stützringe oder ähnliche Stützkörper eingelegt werden. Diese bekannten Stützringe bzw. Stützkörper haben eine verhältnismäßig komplizierte Form, und es ist die Stützfläche an der der Schweißstelle gegenüberliegenden Seite in der Regel gleich groß oder sogar kleiner als an der Seite der Schweißstelle ausgebildet. Es kann dadurch an der der Schweißstelle gegenüberliegenden Stelle der Vorderseitenwand leicht zur Bildung von Preßmarken kommen, wobei aber solche Preßmarken durch die an dieser Stelle zur Bildung eines Sammelkanals in der Vorderseitenwand vorgesehene Ausbuchtung weniger in Erscheinung treten als bei einer im wesentlichen ebenen Fläche, von der lediglich die wesentlich kleineren Wasserkanäle aufragen, wie dies bei einem Plattenradiator eingangs erwähnter Art der Fall ist; außerdem hat man offenbar bei den bekannten Radiatoren der Vermeidung solcher Preßmarken weniger Beachtung geschenkt, während bei Plattenradiatoren eingangs erwähnter Art einem auch in kleinen Details sauberen Erscheinungsbildung gerade in den Randbereichen, wo eben die Anschlußstutzen und Verbindungsstutzen zu plazieren sind, besondere Beachtung geschenkt wurde und deshalb bislang ein aufwendiges Anschweißen dieser Stutzen vorgesehen wurde. Die spezielle Technik der erfindungsgemäßen Ausbildung ermöglicht nun ein wesentliches Herabsetzen des für das Anschweißen von Anschlußstutzen und Verbindungsstutzen erforderlichen Aufwandes, ohne daß dadurch das vorteilhafte und fehlerfreie Aussehen beeinträchtigt bzw. gefährdet wird.It can be mentioned that it is differently trained Panel radiators (DE 31 14 287), in which bulges are provided opposite one another both in the rear wall and in the front wall to form the collecting channels connecting the water channels, which are usually symmetrically shaped to the connecting plane of the radiator walls, by means of welding the connecting pieces and connecting pieces by means of Resistance pressure welding is known, with support rings or similar support bodies also being inserted into the collecting channels at the welds. These known support rings or support bodies have a relatively complicated shape, and the support surface on the side opposite the welding point is generally of the same size or even smaller than on the side of the welding point. As a result, press marks can easily form at the point of the front wall opposite the welding point, but such press marks appear less as a result of the bulge provided at this point for the formation of a collecting channel in the front wall than on a substantially flat surface, of which only project the much smaller water channels, as is the case with a plate radiator of the type mentioned at the beginning; in addition, apparently less attention has been paid to avoiding such press marks in the known radiators, while special attention was paid to plate radiators of the type mentioned at the outset, even in small details, especially in the peripheral areas where the connecting pieces and connecting pieces are to be placed, and therefore So far, a complex welding of these sockets has been provided. The special technique of the design according to the invention now enables a substantial reduction in the effort required for welding the connecting piece and connecting piece, without the advantageous and error-free appearance being impaired or endangered thereby.

Eine hinsichtlich der Stabilität der Stützringe und hinsichtlich der Kraftübertragung beim Preßschweißvorgang günstige Ausführungsform ist dadurch gekennzeichnet, daß die Stützringe kegelstumpfartig massiv ausgebildet sind, wobei die kegelige Mantelfläche den Schrägseiten des Trapezquerschnittes der Sammelkanäle folgend verläuft.An embodiment which is favorable with regard to the stability of the support rings and with regard to the force transmission during the pressure welding process is characterized in that the support rings are of a solid, truncated cone shape, the conical outer surface running on the oblique sides of the trapezoidal cross section of the collecting channels.

Eine hinsichtlich der Verteilung der beim Schweißvorgang angewendeten Druckkräfte im Bereich der der Schweißstelle gegenüberliegenden Stelle der Vorderseitenwand der Radiatorplatte vorteilhafte Ausführungsform, welche besonders hinsichtlich der angestrebten Vermeidung des Entstehens von Preßmarken günstig ist, ist dadurch gekennzeichnet, daß der äußere Durchmesser der im Durchmesser größeren Stützfläche der Stützringe etwa 1,5 mal so groß wie der äußere Durchmesser der im Durchmesser kleineren Stützfläche ist.An embodiment which is advantageous with regard to the distribution of the pressure forces applied during the welding process in the region of the front wall of the radiator plate opposite the welding point and which is particularly advantageous with regard to the aim of avoiding the occurrence of press marks, is characterized in that the outer diameter of the larger supporting surface of the Support rings about 1.5 times the outer diameter of the support surface, which is smaller in diameter.

Es ist beim erfindungsgemäß ausgebildeten Radiator weiter günstig, wenn man vorsieht, daß der axial verlaufende Durchgang der Stützringe sich mindestens auf einem Teil seiner Länge zu der im Durchmesser größeren Stützfläche hin kegelartig erweitert. Eine solche Ausbildung ist vor allem für die Schaffung verhältnismäßig niedriger Durchflußwiderstände im Bereich der Anschlußstellen der Anschlußstutzen bzw. der Verbindungsstutzen an die betreffende Wand der Radiatorplatte von Vorteil, wobei erwähnt werden kann, daß dieser Vorteil auf baulich bzw. herstellungsmäßig sehr einfache Weise auch bei geringer Bauhöhe der Stützringe erzielbar ist. Es ist dabei weiter für das Positionieren der Stützringe beim Bilden der Schweißverbindung und für den Ablauf dieses Verbindungsvorganges günstig, wenn der axial verlaufende Durchgang der Stützringe einen an die im Durchmesser kleinere Stützfläche anschließenden zylindrischen Abschnitt und auf diesen folgend einen sich kegelartig zur im Durchmesser größeren Stützfläche hin erweiternden Abschnitt hat.It is further favorable in the radiator designed according to the invention if it is provided that the axially extending passage of the support rings widens conically at least over part of its length towards the larger support surface in diameter. Such a training is particularly advantageous for the creation of relatively low flow resistances in the area of the connection points of the connecting piece or the connecting piece to the wall of the radiator plate in question, it being possible to mention that this advantage is very simple in terms of construction or manufacture, even at low levels Height of the support rings can be achieved. It is also advantageous for the positioning of the support rings when forming the welded connection and for the course of this connection process if the axially extending passage of the support rings has a cylindrical section adjoining the support surface with a smaller diameter and, following this, a cone-like shape to the support surface with a larger diameter has expanding section.

Die Erfindung wird nun unter Bezugnahme auf Beispiele, welche in der Zeichnung schematisch dargestellt sind, weiter erläutert.The invention will now be further explained with reference to examples, which are shown schematically in the drawing.

In der Zeichnung zeigt:

  • Fig. 1 eine Vorderseitenansicht eines Beispiels eines erfindungsgemäßen Plattenradiators,
  • Fig. 2 eine Rückseitenansicht desselben und
  • Fig. 3 eine in vergrößertem Maßstab gehaltene Schnittdarstellung einer Anschlußstelle dieses Radiators in vergrößertem Maßstab;
  • Fig. 4 zeigt in einer der Fig. 3 ähnlichen Schnittdarstellung eine Verbindungsstelle der beiden Radiatorplatten eines aus zwei solchen Platten aufgebauten erfindungsgemäßen Plattenradiators, und
  • Fig. 5 zeigt in einer gleichfalls der Fig. 3 ähnlichen Schnittdarstellung eine Anschlußstelle einer weiteren Ausführungsform eines erfindungsgemäß ausgebildeten Plattenradiators.
The drawing shows:
  • 1 is a front view of an example of a plate radiator according to the invention,
  • Fig. 2 is a rear view of the same and
  • Figure 3 is an enlarged sectional view of a junction of this radiator on an enlarged scale.
  • Fig. 4 shows in a similar to Fig. 3 Sectional view of a connection point of the two radiator plates of a plate radiator according to the invention constructed from two such plates, and
  • FIG. 5 shows, in a sectional illustration similar to FIG. 3, a connection point of a further embodiment of a plate radiator designed according to the invention.

Die in den Fig. 1 bis 3 dargestellte Ausführungsform eines Plattenradiators besteht aus einer einzigen Radiatorplatte 1, die aus einer Vorderseitenwand 2 und einer Rückseitenwand 3, welche miteinander verschweißt sind, gebildet ist. Durch einander gegenüberliegende Ausbuchtungen 4, welche in die Vorderseitenwand 2 und in die Rückseitenwand 3 eingeformt sind, ist eine Reihe von nebeneinander verlaufenden Kanälen 5 gebildet, die im Betrieb vom Heizmedium, in der Regel Wasser, durchflossen werden. Die Kanäle 5 sind über zwei Sammelkanäle 6, 7 miteinander und mit den für den Zulauf und den Ablauf des Heizmediums an der Radiatorplatte vorgesehenen Anschlußstutzen 8, 9 verbunden. Die Sammelkanäle 6, 7 sind durch Ausbuchtungen 10 gebildet, welche lediglich in die Rückseitenwand 3 eingeformt sind. Diese Ausbuchtungen 10 bzw. die durch diese Ausbuchtungen gebildeten Sammelkanäle 6, 7 verlaufen längs zueinander paralleler Ränder 11, 12 der Radiatorplatte 1 quer zu den Kanälen 5. Zur Seite der Vorderseitenwand 2 hin sind die Sammelkanäle durch die Innenfläche der Vorderseitenwand 2 begrenzt, welche, abgesehen von den die Kanäle 5 bildenden Ausbuchtungen 4, der Ebene 13 folgend verläuft, in der die Vorderseitenwand 2 und die Rückseitenwand 3 zusammengefügt sind.The embodiment of a plate radiator shown in FIGS. 1 to 3 consists of a single radiator plate 1, which is formed from a front side wall 2 and a rear side wall 3, which are welded together. Opposing bulges 4, which are formed in the front wall 2 and in the rear wall 3, form a row of channels 5 running side by side, through which the heating medium, usually water, flows during operation. The channels 5 are connected via two collecting channels 6, 7 to one another and to the connecting pieces 8, 9 provided for the inlet and outlet of the heating medium on the radiator plate. The collecting channels 6, 7 are formed by bulges 10, which are only molded into the rear wall 3. These bulges 10 or the collecting channels 6, 7 formed by these bulges run along mutually parallel edges 11, 12 of the radiator plate 1 transversely to the channels 5. Towards the front side wall 2, the collecting channels are delimited by the inner surface of the front side wall 2, which, apart from the bulges 4 forming the channels 5, follows the plane 13 in which the front side wall 2 and the rear side wall 3 are joined.

Es ist sohin bei dieser Radiatorplatte 1 die durch die Vorderseitenwand 2 gebildete Sichtseite als ebene Fläche ausgebildet, von welcher lediglich die Ausbuchtungen 4, welche die Kanäle 5 bilden, an der die Sichtseite bildenden Außenfläche 14 aufragen bzw. vorstehen.In this radiator plate 1, the visible side formed by the front side wall 2 is designed as a flat surface, from which only the bulges 4, which form the channels 5, protrude or protrude from the outer surface 14 forming the visible side.

Die Anschlußstutzen 8, 9 sind an an den Sammelkanälen 6, 7 gelegenen Stellen 15 der Radiatorplatte 1 durch elektrische Widerstands-Preßschweißung angeschweißt. Die Sammelkanäle 6, 7 haben einen im wesentlichen trapezförmigen Querschnitt, und es sind in diese Sammelkanäle an den Anschlußstellen 15 kegelstumpfartig ausgebildete, massive Stützringe 16 eingelegt, welche ein Eindrücken der im Bereich der Anschlußstellen 15 liegenden, die Sammelkanäle 6, 7 begrenzenden Zonen der Vorderseiten wand 2 und der Rückseitenwand 3 unter den beim Schweißvorgang angewendeten Druckkräften hintanhalten. Die Stützringe 16 sichern damit auch die an den Schweißstellen gelegenen Wandteile gegen Verformen und tragen damit zur Bildung exakter und sicherer Schweißverbindungen bei. Die Stützringe 16 haben zueinander parallele kreisringförmige Stützflächen 17, 18, wobei die im Durchmesser kleinere Stützfläche 17, an der die kürzere Parallelseite 19 des trapezförmigen Querschnitts der Sammelkanäle 6, 7 bildenden Zone 20 der Rückseitenwand 3 liegt, und die im Durchmesser größere Stützfläche 18 an der dieser Zone 20 gegenüberliegenden, in der Verbindungsebene 13 von Vorderseitenwand 2 und Rückseitenwand 3 gelegenen Stelle 21 der Vorderseitenwand 2 zu liegen kommt. Die kegelige Mantelfläche 22 der Stützringe 16 folgt in ihrem Verlauf den durch die Rückseitenwand 3 gebildeten Schrägseiten 23 des Trapezquerschnittes der Sammelkanäle 6, 7. Es wird solcherart auf einfache und wirksame Weise eine Verteilung der an den Anschlußstellen 15 beim Schweißvorgang wirkenden Druckkräfte an den den Anschlußstellen 15 gegenüberliegenden Stellen 21 der Vorderseitenwand 2 erzielt, wobei durch die Ausbildung der Stützringe eine gleichmäßige Verteilung über die im Durchmesser größere Stützfläche 18 und auch eine Herabminderung des Flächendruckes erzielbar ist. Dadurch kann dem Entstehen von an der Außenseite der Vorderseitenwand sichtbaren Preßmarken weitestgehend entgegengewirkt werden. Es ist zum Herbeiführen dieser Wirkung vorteilhaft, wenn der äußere Durchmesser 24 der im Durchmesser größeren Stützfläche 18 etwa eineinhalb Mal so groß wie der äußere Durchmesser 25 der im Durchmesser kleineren Stützfläche 17 ist.The connecting pieces 8, 9 are welded at points 15 of the radiator plate 1 located on the collecting channels 6, 7 by electrical resistance pressure welding. The collecting channels 6, 7 have a substantially trapezoidal cross section, and it are inserted in these collecting channels at the connection points 15 formed frustoconical, massive support rings 16, which hold back an impression of the lying in the area of the connection points 15, the collecting channels 6, 7 delimiting zones of the front wall 2 and the rear wall 3 under the pressure forces applied during the welding process. The support rings 16 thus also secure the wall parts located at the welding points against deformation and thus contribute to the formation of precise and reliable welded connections. The support rings 16 have mutually parallel annular support surfaces 17, 18, the support surface 17 having a smaller diameter, on which lies the zone 20 of the rear side wall 3 forming the shorter parallel side 19 of the trapezoidal cross section of the collecting channels 6, 7, and the support surface 18 which is larger in diameter the point 21 of the front side wall 2 lying opposite this zone 20 and located in the connecting plane 13 of the front side wall 2 and the rear side wall 3. The course of the conical lateral surface 22 of the support rings 16 follows the inclined sides 23 of the trapezoidal cross section of the collecting channels 6, 7 formed by the rear wall 3. In this way, the pressure forces acting on the connection points 15 during the welding process are distributed in a simple and effective manner at the connection points 15 opposite points 21 of the front wall 2 is achieved, with the formation of the support rings a uniform distribution over the larger diameter support surface 18 and a reduction in surface pressure can be achieved. As a result, the formation of press marks visible on the outside of the front wall can be largely counteracted. To bring about this effect, it is advantageous if the outer diameter 24 of the larger-diameter support surface 18 is approximately one and a half times the outer diameter 25 of the smaller-diameter support surface 17.

Die Stützringe 16 haben einen axial verlaufenden Durchgang 26, durch den der Durchfluß des Mediums vom betreffenden Anschlußstutzen 8, 9 in den Radiator bzw. aus dem Radiator in einen Anschlußstutzen erfolgt. Es ist dabei für die Positionierung der Stützringe an den Anschlußstellen 15 und für die Ausbildung der Verbindung zu den Anschlußstutzen 8, 9 günstig, wenn der Durchgang 26 einen an die im Durchmesser kleinere Stützfläche 17 anschließenden zylindrischen Abschnitt 27 aufweist, und es ist für die Fließverbindung des Durchgangs 26 mit dem Sammelkanal, in welchem der betreffende Stützring 16 angeordnet ist, von Vorteil, wenn sich der Durchgang 26 kegelartig erweitert, d.h. zur im Durchmesser größeren Stützfläche 18 hin einen sich kegelartig erweiternden Abschnitt 28 aufweist. Es ergibt sich durch diese Erweiterung schon in den Stützringen 16 ein Erweitern des Strömungsweges, und es kann so auf sehr einfache Weise der Durchflußwiderstand vom Durchgang 26 in die Sammelkanäle verhältnismäßig klein gehalten werden, so daß ein verhältnismäßig geringer Abstand zwischen der Stützfläche 18 und der dieser gegenüberliegenden Stelle 21 der Vorderseitenwand für den Durchfluß des Heizmediums ausreicht; es brauchen solcherart keine speziellen, aus dem Durchgang 26 radial nach außen führenden Öffnungen vorgesehen werden. Der Abstand zwischen den Stützflächen 18 und den diesen gegenüberliegenden Stellen 21 der Vorderseitenwand 2 kann so gewählt werden, daß beim Preßschweißvorgang die die Sammelkanäle begrenzenden Zonen der Vorderseitenwand 2 und der Rückseitenwand 3 nur elastisch bis zum Anliegen an den Stützflächen 17, 18 der Stützringe 16 verformt werden und nach Beendigung des Schweißvorganges wieder in die einen Abstand zwischen den Stützflächen 18 und den gegenüberliegenden Stellen 21 der Vorderseitenwand 2 bildende Stellung zurückfedern.The support rings 16 have an axially extending passage 26 through which the flow of the medium from the connecting piece 8, 9 in question into the radiator or from the radiator into a connecting piece takes place. It is advantageous for the positioning of the support rings at the connection points 15 and for the formation of the connection to the connection pieces 8, 9, if the passage 26 has a cylindrical section 27 adjoining the smaller supporting surface 17, and it is advantageous for the flow connection of the passage 26 to the collecting duct in which the relevant support ring 16 is arranged if the passage 26 widens in a conical manner , ie has a conically widening section 28 towards the larger support surface 18 in diameter. It results from this extension already in the support rings 16 an expansion of the flow path, and it can be kept in a very simple manner, the flow resistance of the passage 26 in the collecting channels relatively small, so that a relatively small distance between the support surface 18 and this opposite point 21 of the front wall is sufficient for the flow of the heating medium; In this way, no special openings leading radially outward from the passage 26 are required. The distance between the support surfaces 18 and the opposing locations 21 of the front wall 2 can be selected so that the zones of the front wall 2 and the rear wall 3 delimiting the collecting channels deform only elastically during the pressure welding process until they rest against the support surfaces 17, 18 of the support rings 16 and after the welding process has ended, spring back into the position forming a distance between the support surfaces 18 and the opposite locations 21 of the front wall 2.

Fig. 4 zeigt eine Ausführungsform eines aus zwei Radiatorplatten gebildeten Plattenradiators. Die Radiatorplatten 1 sind dabei mit ihren Rückseitenwänden 3 einander zugewandt angeordnet und mit Verbindungsstutzen 29 miteinander verbunden. Die beiden Radiatorplatten 1 sind analog wie die in den Fig. 1 bis 3 ausgeführte Ausführungsform mit Kanälen 5 und Sammelkanälen 6, 7 versehen, wobei die Sammelkanäle 6, 7 durch Ausbuchtungen 10 in den Rückseitenwänden 3 gebildet sind und die Vorderseitenwände 2, mit Ausnahme der die Kanäle 5 bildenden Ausbuchtungen 4, im Bereich der Sammelkanäle 6, 7 an der Verbindungsebene 13 verlaufen, in der die Vorderseitenwand 2 mit der Rückseitenwand 3derbetreffenden Radiatorplatte 1 zusammengefügt ist. Die Verbindungsstutzen 29, welche eine Fließverbindung zwischen den beiden Radiatorplatten 1 herstellen, sind an Anschlußstellen 15, die an den die Sammelkanäle 6, 7 bildenden Ausbuchtungen 10 der Rückseitenwand 3 liegen, mit den Plattenradiatoren 1 verschweißt. Diese Schweißverbindung ist als Widerstands-Preßschweißung ausgeführt. An den Anschlußstellen 15 sind in die Sammelkanäle 6, 7 kegelstumpfartig ausgebildete Stützringe 16 eingelegt, welche analog wie bei den Ausführungsformen nach den Fig. 1 bis 3 ausgebildet sind. Die Radiatorplatten 1 können zur Bildung von Zulauf- und Ablaufanschlüssen für das Heizmedium mit Anschlußstutzen 8, 9 versehen sein. Man kann aber gewünschtenfalls die Verbindungsstutzen 29 durch Vorsehen von Anschlußstutzen 30 an den Verbindungsstutzen 29 auch zur Bildung der Zulauf- und Ablaufanschlüsse ausbilden. Solche Anschlußstutzen können, wie in Fig. 4 dargestellt nach unten weisend oder auch nach anderen Richtungen weisend, insbesondere horizontal weisend, vorgesehen werden. Korrespondierendes gilt auch für Anschlußstutzen, welche, wie die Anschlußstutzen 8, 9 bei der Ausführungsform nach den Fig. 1 bis 3, direkt an der Radiatorplatte bzw. den Radiatorplatten angebracht sind.4 shows an embodiment of a plate radiator formed from two radiator plates. The radiator plates 1 are arranged with their rear side walls 3 facing one another and connected to one another by connecting pieces 29. The two radiator plates 1 are provided in the same way as the embodiment shown in FIGS. 1 to 3 with channels 5 and collecting channels 6, 7, the collecting channels 6, 7 being formed by bulges 10 in the rear side walls 3 and the front side walls 2, with the exception of the the bulges 4 forming channels 5 run in the region of the collecting channels 6, 7 at the connecting plane 13, in which the front side wall 2 is joined to the rear side wall 3 of the radiator plate 1 concerned. The connecting piece 29, which is a flow connection between the Manufacture two radiator plates 1, are welded to the plate radiators 1 at connection points 15 which lie on the bulges 10 of the rear side wall 3 forming the collecting channels 6, 7. This welded joint is designed as a resistance pressure weld. At the connection points 15, frustoconical support rings 16 are inserted into the collecting channels 6, 7, which are formed analogously to the embodiments according to FIGS. 1 to 3. The radiator plates 1 can be provided with connecting pieces 8, 9 to form inlet and outlet connections for the heating medium. If desired, however, the connecting pieces 29 can also be formed by providing connecting pieces 30 on the connecting pieces 29 to form the inlet and outlet connections. Such connecting pieces can, as shown in FIG. 4, point downwards or point in other directions, in particular point horizontally. The same applies to connection pieces, which, like the connection pieces 8, 9 in the embodiment according to FIGS. 1 to 3, are attached directly to the radiator plate or plates.

Bei der in Fig. 5 dargestellten Ausführungsform eines erfindungsgemäßen Plattenradiators sind die in die Sammelkanäle in der Radiatorplatte 1, von denen nur der Sammelkanal 6 dargestellt ist, eingelegten Stützringe 31 aus Flachmaterial spanlos geformt. Analog wie bei den vorstehend erörterten Ausführungsformen ist auch bei der in Fig. 5 dargestellten Ausführungsform die im Durchmesser kleinere Stützfläche 17 der Stützringe 31 an der die kürzere Parallelseite 19 des trapezförmigen Querschnittes der den betreffenden Sammelkanal bildenden Zone 20 der Rückseitenwand 3 vorgesehen und die im Durchmesser größere Stützfläche 18 der Stützringe 31 an der dieser Zone 20 gegenüberliegenden Stelle der Vorderseitenwand 2, welche Stelle in der Verbindungsebene 13 von Vorderseitenwandund Rückseitenwand 3 liegt. Es verläuft die Mantelfläche 32 der Stützringe 31 annähernd den durch die Rückseitenwand 3 gebildeten Schrägseiten 23 des Trapezquerschnittes der Sammelkanäle folgend. Durch eine kleine ringsumlaufende Eindellung 33 wird die Stabilität der Stützringe 31, insbesondere an der Stützfläche 18, erhöht. Die Anschlußstutzen dieses Plattenradiators, von denen der Anschlußstutzen 8 in Fig. 5 dargestellt ist, sind durch elektrische Widerstands-Preßschweißung an die an den Sammelkanälen gelegenen Stellen 15 der Rückseitenwand 3 der Radiatorplatte 1 angeschweißt. Die an diesen Stellen 15 vorgesehenen Öffnungen 34 stellen die Verbindung von den Anschlußstutzen 8 zum Inneren des Radiators her. Der Rand 35 der Öffnungen 34 ist nach innen umgebogen, und es sind die Stützringe 31 mit ihrem Durchgang 36 auf diesen Rand gesteckt; die Stützringe, welche vor der Herstellung der Schweißverbindungen zwischen die Vorderseitenwand und die Rückseitenwand eingesetzt und dabei auf den Rand 35 der betreffenden Öffnungen 34 gesteckt werden, sind so gegen seitliches Verschieben in bezug auf die Stelle, an der die Schweißverbindung mit dem betreffenden Anschlußstutzen hergestellt wird, gesichert. Der Durchgang 36 erweitert sich zur Stützfläche 18 hin. Gewünschtenfalls kann der Rand 35 auch im Durchgang 36, wie strichliert mit 37 angedeutet, nach außen umgebogen werden, so daß bei einem allfälligen Transport oder anderen Manipulationen an den schon mit aufgesteckten Stützringen versehenen Rückseitenwänden die Stützringe gegen unbeabsichtigtes Lösen gesichert sind.In the embodiment of a plate radiator according to the invention shown in FIG. 5, the support rings 31 inserted into the collecting channels in the radiator plate 1, of which only the collecting channel 6 is shown, are formed without cutting from flat material. Analogously to the embodiments discussed above, in the embodiment shown in FIG. 5, the support surface 17 of the support rings 31 with a smaller diameter is provided on the shorter parallel side 19 of the trapezoidal cross section of the zone 20 of the rear side wall 3 forming the relevant collecting duct, and that in diameter Larger support surface 18 of the support rings 31 at the location of the front wall 2 opposite this zone 20, which location lies in the connecting plane 13 of the front wall and rear wall 3. The lateral surface 32 of the support rings 31 runs approximately following the inclined sides 23 of the trapezoidal cross section of the collecting channels formed by the rear side wall 3. The stability of the support rings 31, in particular on the support surface 18, is increased by a small circumferential indentation 33. The connecting piece of this plate radiator, from which the connecting piece 8 is shown in Fig. 5, are welded by electrical resistance pressure welding to the points 15 located on the collecting channels of the rear wall 3 of the radiator plate 1. The openings 34 provided at these points 15 establish the connection from the connecting piece 8 to the interior of the radiator. The edge 35 of the openings 34 is bent inwards, and the support rings 31 are inserted with their passage 36 onto this edge; the support rings, which are inserted between the front side wall and the rear side wall prior to the production of the welded connections and are thereby inserted onto the edge 35 of the openings 34 in question, are against lateral displacement with respect to the point at which the welded connection is made with the relevant connecting piece , secured. The passage 36 widens towards the support surface 18. If desired, the edge 35 can also be bent outwards in the passage 36, as indicated by the dashed line 37, so that the support rings are secured against unintentional loosening in the event of transport or other manipulations on the rear walls already provided with support rings.

Eine solche Sicherung der Stützringe gegen seitliches Verschieben und gewünschtenfalls auch gegen unbeabsichtigtes Lösen von den Rückseitenwänden der herzustellenden Radiatoren kann natürlich auch bei den anderen, oben erörterten, Ausführungsformen des erfindungsgemäßen Plattenradiators vorgesehen werden.Such securing of the support rings against lateral displacement and, if desired, also against unintentional detachment from the rear side walls of the radiators to be produced can of course also be provided in the other embodiments of the plate radiator according to the invention, discussed above.

Auch kann man bei einer hinsichtlich der Stützringe zu Fig. 5 analogen Ausführungsform im Bedarfsfall Verbindungsstutzen 29 zum Zusammenfügen mehrerer Radiatorplatten 1 vorsehen, wie dies in Fig. 4 dargestellt ist.In an embodiment that is analogous to the support rings of FIG. 5, it is also possible, if necessary, to provide connecting pieces 29 for joining together a plurality of radiator plates 1, as is shown in FIG. 4.

Die Anschlußstutzen, welche oft auch Anschlußmuffen genannt werden, können auch Teile sogenannter Anschlußgarnituren sein, welche Anschlußstücke, Verbindungsrohre sowie meist auch Ventile umfassen und Verbindungen zwischen standardisiert placierten Leitungsanschlußstellen und den an den Radiatorplatten vorgesehenen Anschlußstellen bilden.The connecting pieces, which are often also called connecting sleeves, can also be parts of so-called connecting sets, which comprise connecting pieces, connecting pipes and usually also valves and form connections between standardized placed line connection points and the connection points provided on the radiator plates.

Der erfindungsgemäße Radiator kann gewünschtenfalls auch aus mehr als zwei Radiatorplatten gebildet werden, welche analog der Ausführungsform nach Fig. 4 untereinander mittels Verbindungsstutzen verbunden sind, welche eine Fließverbindung zwischen den in den einzelnen Radiatorplatten vorgesehenen Sammelkanälen herstellen.If desired, the radiator according to the invention can also be formed from more than two radiator plates, which are analog of the embodiment according to FIG. 4 are connected to one another by means of connecting pieces which establish a flow connection between the collecting channels provided in the individual radiator plates.

Claims (5)

  1. A plate radiator comprising at least one radiator plate formed by a front-side wall and a rear-side wall welded to the front-side wall, and water channels extending adjacently and moulded into the front-side wall and into the rear-side wall, which water channels, via two collecting channels moulded only into the rear-side wall and extending along parallel edges of the radiator plate transversely to the said water channels, are interconnected and connected to the joining sleeves of the radiator plate and to connecting sleeves optionally provided for interconnecting several radiator plates, the collecting channels being welded with the joining sleeves of the radiator plate as well as with optionally provided connecting sleeves,
    characterised in that the joining sleeves (8, 9) and the optionally provided connecting sleeves (29) are welded by electric resistance-pressure welding to the radiator plate at connecting sites located at the collecting channels (6, 7), and that at the connecting sites of these sleeves (8, 9, 29), supporting rings (16, 31) having parallel, circular-ring-shaped supporting faces (17, 18) of different diameters are inserted in the collecting channels (6, 7) moulded only into the rear-side wall (3) of the respective radiator plate (1), which collecting channels have a substantially trapezoidal cross-section, wherein the supporting face (17) of smaller diameter lies at that zone (20) of the rear-side wall (3) which forms the shorter parallel side (19) of the trapezoidal cross-section of the collecting channels (6, 7), and the supporting face (18) of larger diameter lies at that site of the front-side wall (2) which is opposite to said zone (20), in the connecting plane (13) of front-side wall (2) and rear-side wall (3), and the peripheral face (22, 32) of the supporting rings (16, 31) approximately follows the inclined sides (23) of the trapezoidal cross-section of the collecting channels (6, 7) which are formed by the rear-side wall (3).
  2. A plate radiator according to claim 1, characterised in that the supporting rings (16) are frustoconically solid, wherein the conical peripheral face (22) follows the inclined sides of the trapezoidal cross-section of the collecting channels (6, 7).
  3. A plate radiator according to claim 1 or 2, characterised in that the outer diameter of the larger-diameter supporting face (18) of the supporting rings (16, 31) is approximately 1.5 times as large as the outer diamter of the smaller-diameter supporting face (17).
  4. A plate radiator according to any one of the preceding claims, characterised in that the axially extending passage (26) of the supporting rings (16, 31) widens towards the larger-diameter supporting face (18) over at least part of its length.
  5. A plate radiator according to claim 4, characterised in that the axially extending passage (26) of the supporting rings (16) has a cylindrical portion (27) following upon the smaller-diameter supporting face (17), and a portion (28) which widens conically towards the larger-diameter supporting face (18) following upon the cylindrical portion.
EP94900002A 1992-10-30 1993-10-29 Plate radiator Expired - Lifetime EP0665943B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT2150/92 1992-10-30
AT0215092A AT401575B (en) 1992-10-30 1992-10-30 DISK RADIATOR
PCT/AT1993/000167 WO1994010521A1 (en) 1992-10-30 1993-10-29 Plate radiator

Publications (2)

Publication Number Publication Date
EP0665943A1 EP0665943A1 (en) 1995-08-09
EP0665943B1 true EP0665943B1 (en) 1996-09-25

Family

ID=3528840

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94900002A Expired - Lifetime EP0665943B1 (en) 1992-10-30 1993-10-29 Plate radiator

Country Status (9)

Country Link
EP (1) EP0665943B1 (en)
AT (2) AT401575B (en)
CZ (1) CZ107195A3 (en)
DE (1) DE59304002D1 (en)
FI (1) FI951676A (en)
HU (1) HUT70596A (en)
NO (1) NO179728C (en)
SK (1) SK53695A3 (en)
WO (1) WO1994010521A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9519680D0 (en) * 1995-09-27 1995-11-29 Itw Ltd Spacer member and method of making a spacer member
AT408276B (en) * 1997-05-12 2001-10-25 Vogel & Noot Waermetechnik Ag PANEL OR FLAT RADIATORS
WO2000047940A1 (en) * 1999-02-12 2000-08-17 Baggrave Ltd. A radiator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2317828C3 (en) * 1973-04-09 1980-11-13 Schaefer Werke Kg, 5908 Neunkirchen Flat hollow body, in particular plate heating elements, with welded fittings
DE3114287C2 (en) * 1981-04-09 1984-11-29 Harry 6472 Altenstadt König Process for the production of a prismatic cross-section having a hollow molding as a support part for the welded connection
DE3475490D1 (en) * 1984-09-01 1989-01-12 Koenig Metallwarenfab Gmbh Method of making an extruded fitting for panel radiators
DE3440272A1 (en) * 1984-11-03 1986-05-15 Hans Berg Verwaltungsgesellschaft mbH und Co KG, 5226 Reichshof Process for the production of a supporting part for flat radiators
DE9217149U1 (en) * 1992-12-16 1993-02-25 Prof. Dr. E. Sommer GmbH & Co. Patentverwaltungs-KG, 4800 Bielefeld Panel radiators

Also Published As

Publication number Publication date
NO951632D0 (en) 1995-04-28
NO179728C (en) 1996-12-04
FI951676A0 (en) 1995-04-07
NO179728B (en) 1996-08-26
SK53695A3 (en) 1995-12-06
CZ107195A3 (en) 1995-08-16
ATA215092A (en) 1996-02-15
WO1994010521A1 (en) 1994-05-11
ATE143480T1 (en) 1996-10-15
FI951676A (en) 1995-04-07
HU9500923D0 (en) 1995-05-29
NO951632L (en) 1995-04-28
AT401575B (en) 1996-10-25
HUT70596A (en) 1995-10-30
EP0665943A1 (en) 1995-08-09
DE59304002D1 (en) 1996-10-31

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