EP1979696B1 - Heating device - Google Patents

Heating device Download PDF

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Publication number
EP1979696B1
EP1979696B1 EP07721886A EP07721886A EP1979696B1 EP 1979696 B1 EP1979696 B1 EP 1979696B1 EP 07721886 A EP07721886 A EP 07721886A EP 07721886 A EP07721886 A EP 07721886A EP 1979696 B1 EP1979696 B1 EP 1979696B1
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EP
European Patent Office
Prior art keywords
housing
terminus
heating device
heating medium
implemented
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EP07721886A
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German (de)
French (fr)
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EP1979696A2 (en
Inventor
Wolfgang Schleiter
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Viessmann Werke GmbH and Co KG
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Viessmann Werke GmbH and Co KG
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
    • F28D7/024—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
    • F24H1/43—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes helically or spirally coiled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates

Definitions

  • the invention relates to a heater according to the preamble of patent claim 1.
  • a heater of the type mentioned is according to the DE 38 15 647 A1 known.
  • This consists of at least one spirally wound around a helical axis, by a heating medium (in this case, a refrigerant) through-flowable heat exchanger having flat ends and return coil ends and heating medium connections and which is formed a correspondingly coiled fürströmspalt defining, wherein at least one coil end a cap-like terminal housing connected liquid-tight and is arranged at this the heating medium connection.
  • FIG. 1 of the DE 38 15 647 A1 shows a solution with a simple and FIG. 2 a solution with a double helix twisted into one another.
  • Another heater is after the DE 102 11 489 C1
  • Such heaters equipped with double or multiple helices as heat exchangers are intended especially for larger power ranges.
  • the integration of the two coiled, formed from flat tubes heat exchanger takes place in said heater by welding with end walls on both sides (so-called boards), in which with regard to the slope of the two coiled flat tubes or the heat exchanger corresponding depressions are impressed, the open ends of there slope-fitting and obliquely cut flat tubes are connected to inlet and outlet openings in the boards (the oblique gate is production technology required because the boards are produced by deep drawing, thus no 90 ° angle is possible).
  • These boards must also be designed as a hollow board to flow and return chambers with flow and return ports to form for to be connected heat consuming circuits.
  • the invention is based on the object, and indeed with the proviso, while a total to create more favorable manufacturing conditions.
  • At least one end of the coil is cut off obliquely with respect to the helical axis and the end housing is likewise inclined in the opposite direction, preferably with the heating medium connection oriented in the helical axis direction in the cap-like closure housing.
  • the inflow and outflow openings are arranged at the helical ends in a direction inclined with respect to the flow direction plane to which the corresponding but oppositely cut termination or distribution housing are attached, ie between the helical end and the end housing is according to the invention an obliquely oriented plane (connection plane) is provided.
  • this oblique gate facilitates the connection of the terminal housing with the coil end, since all connecting edges are accessible without further spreading of the coil, for example, a welding process, which in coils in the sense of DE 102 11 489 C1 or DE 10 2004 005 048 A1 would not be possible, since the fürströmspalt (Heizgas penströmspalt) unlike DE 38 15 647 A1 is relatively tight.
  • the termination or distributor housing in side view are preferably designed substantially as right-angled triangles, the hypotenuse of which forms the connection side for the coil ends and on whose larger catheters the heating medium connection is arranged.
  • the solution according to the invention is in particular intended for heaters whose heat exchangers consist of at least two coiled tubing, in which it is therefore necessary to hydraulically connect the flat tube coils involved, to close them at their ends and to provide common heating medium connections.
  • the solution according to the invention is advantageously also suitable for heaters, which, for example, due to lower power requirements with only one coiled flat tube (ie a heat exchanger) get along.
  • the heater according to the invention in particular the function of a boiler (see again DE 102 11 489 C1 and DE 10 2004 005 048 A1 ). Accordingly, it is preferably provided that the at least one heat exchanger encloses a combustion chamber, which is seen in Wendelachscardi bounded at both ends of each end wall, wherein a housing consisting of a Manteilteil and the end walls is formed, enclosing the heat exchanger to form an exhaust gas space.
  • the cap-like closure or distributor housing can be made with their Bankmediumsan Whyn initially independent of the heat exchanger coils and on the coils themselves, apart from the liquid-tight connection of their adjacent walls, no overflow openings or other special manufacturing interventions are required to meet the invention
  • Forming the two heat exchanger coils as an essential element of the heater a dual function, namely on the one hand, the hydraulic connection of the two coils is made by the distributor housing, which also represent a convenient approach for the preferred oriented in Wendelachsplatz flow and return ports, and on the other hand, the heating medium return directly and concentrated supplied to the two coil ends and the supply side of the heating medium flow accordingly concentrated dissipated.
  • the cap-like terminal or distributor housing are formed in cross-section to the flow direction of the heating medium substantially corresponding to the opening cross-section of both spiral ends, d. h.,
  • the two cap-like distributor housing take up virtually no additional space and represent so far only a mecanickontur beginnere continuation of the coil ends.
  • the distributor housings are arranged starting from the lower flat tube or the lower flat tube helix with increasing hypotenuse with respect to the return feed and also the outflowing feed.
  • the terminal walls of the distributor housing opposite the attached helical ends can advantageously be concave or profiled in a concave manner on the inside.
  • the termination or distributor housing can be designed in the form of deep-drawn parts or in such a way that the distributor housing are each formed from one of their final form corresponding and réellefaltendem sheet metal blank. It is particularly preferably provided that the end housing in the form of a casting, in particular a precision casting, is formed.
  • the heater according to the invention continues to exist according to embodiment and with reference to the Figure 1 to 8 from two helically coiled, can be traversed by a heating medium and a correspondingly coiled fürströmspalt S for hot gases defining heat exchangers 1, 2, which are arranged as flat tubes F parallel to each other and into each other or screwed into each other as it were screwed.
  • connection heat exchanger 1, 2 which thus form a double helix, have two helical ends 3, 4, respectively, on the return and the flow side. 3 ', 4' (see FIG. 1, 2 ), wherein the two hydraulically connected with respect to heating medium connections 5 in connection heat exchanger 1, 2 enclose a cylindrical combustion chamber BR, which, seen axially (ie in the direction of the helix axis) is bounded at both ends of a respective end wall 6, 7 of which serves as a connection wall 6 for a burner B.
  • the forward and backward side coil ends 3, 4, 3 ', 4' are for the purpose of hydraulic connection of the two flat tubes F together in each case a cap-like, open to the flat tubes F open as distributor housing end housing 12 liquid-tight, each distributor housing, each with one of Heating medium connections 5 is provided.
  • the cap-like manifold housing in cross-section to the flow direction of the heating medium seen substantially the opening cross-section of both coil ends 3, 4, 3 ', 4' formed according to occupy as little space as possible.
  • FIGS. 4 to 6 are the inlet and outlet openings 14 at the coil ends 3, 4, 3 ', 4' according to the invention in a plane with respect to the flow direction inclined plane E (see FIG. 2 ), to which the corresponding opposite obliquely cut distributor housing attached, that are preferably welded.
  • the end housing 12 are in side view substantially as rectangular triangles whose hypotenuses H form the connection side for the coil ends 3, 4, 3 ', 4', at their larger catheters K each associated heating medium connection 5 is arranged.
  • the closure housing 12 with respect to the return flow and FIG. 2 from the lower flat tube F or from the heat exchanger 2, starting with rising hypotenuse H arranged.
  • the coil ends 3, 4, 3 ', 4' opposite end walls 13 of the manifold housing 12 may concave or inside be profiled profiled, as shown in the oblique sectional view according to FIG. 6 and 10 is illustrated with.
  • the vorerläuterten termination housing 12 are due to their simplicity readily produced as deep-drawn parts, but can also be formed in each case from one of their final shape corresponding and réellefaltenden sheet metal blank, one of which in FIG. 2A is shown for side view in triangular end housing 12, which form is preferred, as characterized by reference to FIG. 2 an optimized distribution of remindlaufzströmung and the flow outflow of the heating medium to the two coiled heat exchanger 1, 2 results.
  • the production or training of the distributor caps for example investment casting, wherein advantageously the respective heating medium connection 5 is formed integrally with the same (see FIG. 10 ).
  • FIG. 9 shows with reference to the heating medium connection 5 a preferred embodiment of the terminal housing 12 as a precision casting.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The invention relates to a heating device comprising at least one heat exchanger that spirals helically around a spiral axis, is traversed by a heating medium and is configured as a flat tube comprising ends of the spiral on the feed flow and return flow sides and heating medium connections, said heat exchanger defining a corresponding spiral-shaped flow opening. A cap-type sealing housing is attached in a fluid-tight manner to at least one end of the spiral and the heating medium connection is situated on the housing. At least one end of the spiral is obliquely truncated in relation to the spiral axis and the end of the sealing housing on the spiral side has a corresponding inverse oblique configuration. Preferably, the heating medium connection on the cap-type sealing housing runs in the direction of the spiral axis.

Description

Die Erfindung betrifft ein Heizgerät gemäß Oberbegriff des Patentanspruchs 1.The invention relates to a heater according to the preamble of patent claim 1.

Ein Heizgerät der eingangs genannten Art ist nach der DE 38 15 647 A1 bekannt. Dieses besteht aus mindestens einem um eine Wendelachse schraubenlinienförmig gewendelten, von einem Heizmedium (in diesem Fall ein Kältemittel) durchströmbaren Wärmetauscher, der als Flachrohr vor- und rücklaufseitig Wendelenden und Heizmediumsanschlüsse aufweist und der einen entsprechend gewendelten Durchströmspalt definierenden ausgebildet ist, wobei an mindestens einem Wendelende ein kappenartiges Abschlussgehäuse flüssigkeitsdicht angebunden und an diesem der Heizmediumsanschluss angeordnet ist. Figur 1 der DE 38 15 647 A1 zeigt dabei eine Lösung mit einer Einfach- und Figur 2 eine Lösung mit einer ineinander gedrehten Doppelwendel.A heater of the type mentioned is according to the DE 38 15 647 A1 known. This consists of at least one spirally wound around a helical axis, by a heating medium (in this case, a refrigerant) through-flowable heat exchanger having flat ends and return coil ends and heating medium connections and which is formed a correspondingly coiled Durchströmspalt defining, wherein at least one coil end a cap-like terminal housing connected liquid-tight and is arranged at this the heating medium connection. FIG. 1 of the DE 38 15 647 A1 shows a solution with a simple and FIG. 2 a solution with a double helix twisted into one another.

Ein weiteres Heizgerät ist nach der DE 102 11 489 C1 bekannt, wobei solche mit Doppel- oder Mehrfachwendeln als Wärmetauscher ausgestatteten Heizgeräte insbesondere für größere Leistungsbereiche bestimmt sind. Die Einbindung der beiden gewendelten, aus Flachrohren gebildeten Wärmetauscher erfolgt beim genannten Heizgerät durch Verschweißen mit beidseitig vorhandenen Abschlusswänden (sogenannte Platinen), in die mit Rücksicht auf die Steigung der beiden gewendelten Flachrohre bzw. der Wärmetauscher entsprechende Vertiefungen eingeprägt sind, wobei die offenen Enden der dort steigungsentsprechend und schräg abgeschnittenen Flachrohre an Zu- und Abströmöffnungen in den Platinen angeschlossen sind (der schräge Anschnitt ist fertigungstechnisch erforderlich, da die Platinen durch Tiefziehen erzeugt werden, mithin kein 90°-Winkel möglich ist). Diese Platinen müssen ausserdem als Hohlplatinen ausgebildet sein, um Vor- und Rücklaufkammern mit Vor- und Rücklaufanschlüssen für anzuschliessende Wärmeverbrauchskreise zu bilden.Another heater is after the DE 102 11 489 C1 Such heaters equipped with double or multiple helices as heat exchangers are intended especially for larger power ranges. The integration of the two coiled, formed from flat tubes heat exchanger takes place in said heater by welding with end walls on both sides (so-called boards), in which with regard to the slope of the two coiled flat tubes or the heat exchanger corresponding depressions are impressed, the open ends of there slope-fitting and obliquely cut flat tubes are connected to inlet and outlet openings in the boards (the oblique gate is production technology required because the boards are produced by deep drawing, thus no 90 ° angle is possible). These boards must also be designed as a hollow board to flow and return chambers with flow and return ports to form for to be connected heat consuming circuits.

Der Vollständigkeit halber wird außerdem noch auf ein Heizgerät gemäß der DE 10 2004 005 048 A1 verwiesen.For the sake of completeness is also still on a heater according to the DE 10 2004 005 048 A1 directed.

Diese relativ aufwendigen Konstruktionen zu vereinfachen, insbesondere sich über den gesamten Heizgerätequerschnitt abdeckende Hohlplatinen zu vermeiden und gegebenenfalls für eine möglichst gleichmässige Beaufschlagung von parallel geführten Wärmetauscher bzw. Flachrohre zu sorgen, liegt der Erfindung als Aufgabe zugrunde, und zwar verbunden mit der Maßgabe, dabei insgesamt günstigere Fertigungsvoraussetzungen zu schaffen.To simplify these relatively complex structures, in particular to avoid over the entire heater cross-section covering hollow plates and possibly to ensure the most uniform possible application of parallel heat exchanger or flat tubes, the invention is based on the object, and indeed with the proviso, while a total to create more favorable manufacturing conditions.

Diese Aufgabe ist mit einem Heizgerät der eingangs genannten Art durch die im Kennzeichen des Patentanspruches 1 angeführten Merkmale gelöst.This object is achieved with a heater of the type mentioned by the features cited in the characterizing part of claim 1.

Nach der Erfindung ist also vorgesehen, dass mindestens ein Wendelende in Bezug auf die Wendelachse schräg abgeschnitten und das Abschlussgehäuse wendelendseitig ebenfalls entsprechend umgekehrt schräg ausgebildet ist, wobei bevorzugt der Heizmediumsanschluss am kappenartigen Abschlussgehäuse in Wendelachsrichtung orientiert ausgerichtet ist.According to the invention, it is thus provided that at least one end of the coil is cut off obliquely with respect to the helical axis and the end housing is likewise inclined in the opposite direction, preferably with the heating medium connection oriented in the helical axis direction in the cap-like closure housing.

Mit anderen Worten ausgedrückt, sind die Zu- und Abströmöffnungen an den Wendelenden in einer in Bezug auf die Strömungsrichtung schräg orientierten Ebene angeordnet, an die die entsprechend aber entgegengesetzt geschnittenen Abschluss- bzw. Verteilergehäuse angesetzt sind, d. h. zwischen dem Wendelende und dem Abschlussgehäuse ist erfindungsgemäß eine schräg orientierte Ebene (Verbindungsebene) vorgesehen. Insbesondere aus fertigungstechnischer Sicht erleichtert dieser schräge Anschnitt das Verbinden des Abschlussgehäuses mit dem Wendelende, da alle Verbindungskanten ohne weitere Aufspreizung der Wendel zum Beispiel einem Schweißprozess zugänglich sind, was bei Wendeln im Sinne der DE 102 11 489 C1 oder DE 10 2004 005 048 A1 nicht möglich wäre, da der Durchströmspalt (Heizgasdurchströmspalt) im Unterschied zur DE 38 15 647 A1 verhältnismäßig eng ist.In other words, the inflow and outflow openings are arranged at the helical ends in a direction inclined with respect to the flow direction plane to which the corresponding but oppositely cut termination or distribution housing are attached, ie between the helical end and the end housing is according to the invention an obliquely oriented plane (connection plane) is provided. In particular, from a production point of view, this oblique gate facilitates the connection of the terminal housing with the coil end, since all connecting edges are accessible without further spreading of the coil, for example, a welding process, which in coils in the sense of DE 102 11 489 C1 or DE 10 2004 005 048 A1 would not be possible, since the Durchströmspalt (Heizgasdurchströmspalt) unlike DE 38 15 647 A1 is relatively tight.

Davon ausgehend, sind bevorzugt die Abschluss- bzw. Verteilergehäuse in Seitenansicht im Wesentlichen als rechtwinklige Dreiecke ausgebildet, deren Hypothenuse die Anschlußseite für die Wendelenden bildet und an deren größerer Kathete der Heizmediumsanschluß angeordnet ist.On this basis, the termination or distributor housing in side view are preferably designed substantially as right-angled triangles, the hypotenuse of which forms the connection side for the coil ends and on whose larger catheters the heating medium connection is arranged.

Die erfindungsgemäße Lösung ist zwar insbesondere für Heizgeräte bestimmt, deren Wärmetauscher aus mindestens zwei Rohrwendeln bestehen, bei denen es also gilt, die beteiligten Flachrohrwendeln miteinander hydraulisch zu verbinden, an ihren Enden zu verschließen und für gemeinsame Heizmediumsanschlüsse zu sorgen. Es hat sich aber gezeigt, dass die erfindungsgemäße Lösung vorteilhaft auch für Heizgeräte geeignet ist, die beispielsweise aufgrund geringerer Leistungsanforderungen mit nur einem gewendelten Flachrohr (also einem Wärmetauscher) auskommen.Although the solution according to the invention is in particular intended for heaters whose heat exchangers consist of at least two coiled tubing, in which it is therefore necessary to hydraulically connect the flat tube coils involved, to close them at their ends and to provide common heating medium connections. However, it has been shown that the solution according to the invention is advantageously also suitable for heaters, which, for example, due to lower power requirements with only one coiled flat tube (ie a heat exchanger) get along.

Bei Heizgeräten allerdings, bei denen mindestens zwei schraubenlinienförmig gewendelte, parallel zueinander und ineinander geführte Wärmetauscher vorgesehen sind und bei denen das Abschlussgehäuse als Verteilergehäuse ausgebildet und flüssigkeitsdicht an die Wendelenden angesetzt ist, ist erfindungsgemäß ferner besonders bevorzugt vorgesehen, dass die Wendelenden der Wärmetauscher jeweils paarweise bündig nebeneinander angeordnet sind, wobei jeweils Ränder ihrer sich benachbart erstreckenden Wände flüssigkeitsdicht miteinander verbunde sind.In heaters, however, in which at least two helically coiled, parallel to each other and each other guided heat exchangers are provided and in which the end housing is designed as a distributor housing and liquid-tightly attached to the coil ends, according to the invention further preferably provided that the coil ends of the heat exchanger in pairs flush are arranged side by side, wherein each edge of their adjacently extending walls are liquid-tightly connected together.

Im Unterschied zur DE 38 15 647 A1 hat das erfindungsgemäße Heizgerät insbesondere die Funktion eines Heizkessels (siehe hierzu wiederum DE 102 11 489 C1 und DE 10 2004 005 048 A1 ) . Demgemäß ist bevorzugt vorgesehen, dass der mindestens eine Wärmetauscher eine Brennkammer umschließt, die in Wendelachsrichtung gesehen beidendig von je einer Abschlusswand begrenzt ist, wobei ein Gehäuse, das aus einem Manteilteil und den Abschlusswänden gebildet ist, den Wärmetauscher unter Ausbildung eines Abgasraumes umschließt.In contrast to DE 38 15 647 A1 has the heater according to the invention in particular the function of a boiler (see again DE 102 11 489 C1 and DE 10 2004 005 048 A1 ). Accordingly, it is preferably provided that the at least one heat exchanger encloses a combustion chamber, which is seen in Wendelachsrichtung bounded at both ends of each end wall, wherein a housing consisting of a Manteilteil and the end walls is formed, enclosing the heat exchanger to form an exhaust gas space.

Abgesehen davon, dass die kappenartigen Abschluss- bzw. Verteilergehäuse mit ihren Heizmediumsanschlüssen zunächst unabhängig von den Wärmetauscherwendeln hergestellt werden können und an den Wendeln selbst, abgesehen von der flüssigkeitsdichten Verbindung ihrer benachbart verlaufenden Wände, weder Überströmöffnungen noch sonstige besondere Fertigungseingriffe vorzunehmen sind, erfüllt die erfindungsgemäße Ausbildung der beiden Wärmetauscherwendeln als wesentliches Element des Heizgerätes eine Doppelfunktion, nämlich zum Einen wird die hydraulische Verbindung der beiden Wendeln durch die Verteilergehäuse hergestellt, die gleichzeitig einen bequemen Ansatz für die bevorzugt in Wendelachsrichtung orientierten Vor- und Rücklaufanschlüsse darstellen, und zum Anderen wird der Heizmediumsrücklauf unmittelbar und konzentriert den beiden Wendelenden zugeführt bzw. vorlaufseitig der Heizmediumsvorlauf entsprechend konzentriert abgeführt. Außerdem sind, da die bisherigen Hohlplatinen wie bei der DE 10 2004 005 048 A1 wegfallen können, an den Abschlußwänden für die Brennkammer keine steigungsangepaßten Anschlußverformungen für die Wendelenden zu berücksichtigen, sondern lediglich einfache Durchgriffsöffnungen für die Heizmediumsanschlüsse, die, wie erwähnt, parallel zur Achse der Brennkammer am Heizgerät abgehen.Apart from the fact that the cap-like closure or distributor housing can be made with their Heizmediumsanschlüssen initially independent of the heat exchanger coils and on the coils themselves, apart from the liquid-tight connection of their adjacent walls, no overflow openings or other special manufacturing interventions are required to meet the invention Forming the two heat exchanger coils as an essential element of the heater a dual function, namely on the one hand, the hydraulic connection of the two coils is made by the distributor housing, which also represent a convenient approach for the preferred oriented in Wendelachsrichtung flow and return ports, and on the other hand, the heating medium return directly and concentrated supplied to the two coil ends and the supply side of the heating medium flow accordingly concentrated dissipated. Moreover, since the previous hollow boards as in the DE 10 2004 005 048 A1 can be omitted to take into account the termination walls for the combustion chamber no pitch adaptations for the coil ends, but only simple through openings for the heating medium connections, which, as mentioned, parallel to the axis of the combustion chamber on the heater.

Die kappenartigen Abschluss- bzw. Verteilergehäuse sind im quer zur Strömungsrichtung des Heizmediums gesehenen Schnitt im Wesentlichen dem Öffnungsquerschnitt beider Wendelenden entsprechend ausgebildet, d. h., die beiden kappenartigen Verteilergehäuse beanspruchen praktisch keinen zusätzlich Raum und stellen insoweit nur eine außenkonturseitige Fortsetzung der Wendelenden dar.The cap-like terminal or distributor housing are formed in cross-section to the flow direction of the heating medium substantially corresponding to the opening cross-section of both spiral ends, d. h., The two cap-like distributor housing take up virtually no additional space and represent so far only a Außenkonturseitige continuation of the coil ends.

Ferner sind die Verteilergehäuse in Bezug auf die Rücklaufzuführung und auch den abströmenden Vorlauf vom unteren Flachrohr bzw. der unteren Flachrohrwendel ausgehend mit ansteigender Hypothenuse angeordnet.Furthermore, the distributor housings are arranged starting from the lower flat tube or the lower flat tube helix with increasing hypotenuse with respect to the return feed and also the outflowing feed.

Um auch im Inneren der Verteilergehäuse die Strömungsverteilung in Bezug auf die Wendeln zu optimieren, können die den angesetzten Wendelenden gegenüberstenden Abschlußwände der Verteilergehäuse vorteilhaft konkav gewölbt oder innenseitig konkav profiliert ausgebildet sein.In order to optimize the flow distribution in relation to the helixes also in the interior of the distributor housing, the terminal walls of the distributor housing opposite the attached helical ends can advantageously be concave or profiled in a concave manner on the inside.

Die Abschluss- bzw. Verteilergehäuse können dabei in Form von Tiefziehteilen ausgebildet sein oder auch in der Weise, dass die Verteilergehäuse jeweils aus einem ihrer Endform entsprechendem und aufzufaltendem Blechzuschnitt gebildet sind. Besonders bevorzugt ist vorgesehen, dass das Abschlussgehäuse in Form eines Gussteils, insbesondere eines Feingussteils, ausgebildet ist.The termination or distributor housing can be designed in the form of deep-drawn parts or in such a way that the distributor housing are each formed from one of their final form corresponding and aufzufaltendem sheet metal blank. It is particularly preferably provided that the end housing in the form of a casting, in particular a precision casting, is formed.

Andere vorteilhafte Weiterbildungen ergeben sich aus den abhängigen Patentansprüchen.Other advantageous developments emerge from the dependent claims.

Das erfindungsgemäße Heizgerät einschließlich seiner vorteilhaften Weiterbildungen gemäß der abhängigen Patentansprüche wird nachfolgend anhand der zeichnerischen Darstellung von Ausführungsbeispielen näher erläutert.The heater according to the invention including its advantageous developments according to the dependent claims will be explained in more detail with reference to the drawing of exemplary embodiments.

Es zeigt (teilweise schematisch)

Figur 1
einen vereinfachten Schnitt durch den eigentlichen Wärmetauscher des Heizgerätes;
Figur 2
einen entsprechenden Schnitt gemäß Figur 1 in erfindungsgemäßer Ausführungsform;
Figur 2A
einen Blechzuschnitt für die Ausbildung von Verteilergehäusen;
Figur 3
perspektivisch ein Ende der Doppelwendel;
Figur 4
das Ende der Doppelwendel gemäß Figur 3 mit angesetztem Verteilergehäuse (noch nicht angeschweißt);
Figur 5
eine der Darstellung gemäß Figur 4 entsprechende Darstellung eines Wendelendes in konturangepaßter Ausführungsform des Vereilergehäuses (Feinguss);
Figur 6
einen Schrägschnitt längs Linie A-A in Figur 5;
Figur 7
perspektivisch den Wärmetauscher des Heizgerätes in Gesamtdarstellung;
Figur 8
ebenfalls perspektivisch und vereinfacht das gesamte Heizgerät ohne äußeres Zubehör;
Figur 9
perspektivisch ein Ende eines nur aus einer Wendel gebildeten Wärmetauschers mit angesetztem Abschlussgehäuse; und
Figur 10
eine Ausführungsform des Abschlussgehäuses aus Feinguss.
It shows (partially schematic)
FIG. 1
a simplified section through the actual heat exchanger of the heater;
FIG. 2
a corresponding section according to FIG. 1 in inventive embodiment;
FIG. 2A
a sheet metal blank for the formation of distributor housings;
FIG. 3
in perspective, one end of the double helix;
FIG. 4
the end of the double helix according to FIG. 3 with attached distributor housing (not yet welded);
FIG. 5
one of the representation according to FIG. 4 corresponding representation of a Wendelendes in contour-matched embodiment of the Vereilergehäuses (precision casting);
FIG. 6
an oblique section along line AA in FIG. 5 ;
FIG. 7
in perspective, the heat exchanger of the heater in an overall view;
FIG. 8
also in perspective and simplifies the entire heater without external accessories;
FIG. 9
in perspective one end of a heat exchanger formed only from a coil with attached end housing; and
FIG. 10
an embodiment of the final housing made of investment casting.

Das erfindungsgemäße Heizgerät besteht gemäß Ausführungsbeispiel nach wie vor und unter Verweis auf die Figur 1 bis 8 aus zwei schraubenlinienförmig gewendelten, von einem Heizmedium durchströmbaren und einen entsprechend gewendelten Durchströmspalt S für Heizgase definierenden Wärmetauschern 1, 2, die als Flachrohre F parallel zueinander und ineinander geführt bzw. ineinander gewissermaßen verschraubt angeordnet sind.The heater according to the invention continues to exist according to embodiment and with reference to the Figure 1 to 8 from two helically coiled, can be traversed by a heating medium and a correspondingly coiled Durchströmspalt S for hot gases defining heat exchangers 1, 2, which are arranged as flat tubes F parallel to each other and into each other or screwed into each other as it were screwed.

Diese Wärmetauscher 1, 2, die somit eine Doppelwendel bilden, weisen jeweils rück- und vorlaufseitig zwei Wendelenden 3, 4; 3', 4' (siehe Figur 1, 2) auf, wobei die beiden hydraulisch miteinander in Bezug auf Heizmediumsanschlüsse 5 in Verbindung stehenden Wärmetauscher 1, 2 eine zylindrische Brennkammer BR umschließen, die, axial gesehen (also in Richtung der Wendelachse), beidendig von je einer Abschlußwand 6, 7 begrenzt ist, von denen eine als Anschlusswand 6 für einen Brenner B dient. Ein Gehäuse 8, das aus einem Mantelteil 9 und den Wänden 6, 7 (in Figur 1 nur schematisch angedeutet) gebildet ist, umschließt die beiden Wärmetauscher 1, 2 unter Ausbildung eines mit Abgasanschluß 10 (siehe Figur 8) versehenen Abgasraumes 11, der ebenfalls in Figur 1 schematisch mit angedeutet ist.These heat exchangers 1, 2, which thus form a double helix, have two helical ends 3, 4, respectively, on the return and the flow side. 3 ', 4' (see FIG. 1, 2 ), wherein the two hydraulically connected with respect to heating medium connections 5 in connection heat exchanger 1, 2 enclose a cylindrical combustion chamber BR, which, seen axially (ie in the direction of the helix axis) is bounded at both ends of a respective end wall 6, 7 of which serves as a connection wall 6 for a burner B. A housing 8, which consists of a casing part 9 and the walls 6, 7 (in FIG. 1 only schematically indicated), encloses the two heat exchangers 1, 2 to form a with exhaust port 10 (see FIG. 8 ) provided exhaust gas space 11, which is also in FIG. 1 is indicated schematically with.

Für ein solches Heizgerät mit zwei Wendeln ist nun wesentlich, dass die Wendelenden 3, 4, 3', 4' der beiden die Wärmetauscher 1, 2 bildenden Flachrohre F jeweils paarweise bündig nebeneinander angeordnet und die Ränder R (siehe Figur 3) ihrer sich benachbart erstreckenden Wände W flüssigkeitsdicht miteinander verbunden, vorzugsweise verschweißt, sind (die dicke schwarze Linie stellt eine Schweißnaht dar).For such a heater with two coils is now essential that the coil ends 3, 4, 3 ', 4' of the two heat exchangers 1, 2 forming flat tubes F arranged in pairs flush with each other and the edges R (see FIG. 3 ) of its adjacently extending walls W are liquid-tight with each other connected, preferably welded, are (the thick black line represents a weld).

Die vor- und rücklaufseitigen Wendelenden 3, 4, 3', 4' sind dabei zwecks hydraulischer Verbindung beider Flachrohre F gemeinsam an je ein kappenartiges, zu den Flachrohren F hin offenes als Verteilergehäuse ausgebildetes Abschlussgehäuse 12 flüssigkeitsdicht angesetzt, wobei jedes Verteilergehäuse mit je einem der Heizmediumsanschlüsse 5 versehen ist.The forward and backward side coil ends 3, 4, 3 ', 4' are for the purpose of hydraulic connection of the two flat tubes F together in each case a cap-like, open to the flat tubes F open as distributor housing end housing 12 liquid-tight, each distributor housing, each with one of Heating medium connections 5 is provided.

Wie insbesondere aus den Figur 2 bis 5 ersichtlich, sind die kappenartigen Verteilergehäuse im quer zur Strömungsrichtung des Heizmediums gesehenen Schnitt im Wesentlichen dem Öffnungsquerschnitt beider Wendelenden 3, 4, 3', 4' entsprechend ausgebildet, um so wenig wie möglich Raum zu beanspruchen.As in particular from the FIGS. 2 to 5 it can be seen, the cap-like manifold housing in cross-section to the flow direction of the heating medium seen substantially the opening cross-section of both coil ends 3, 4, 3 ', 4' formed according to occupy as little space as possible.

Ebenfalls unter Bezug auf die Figur 4 bis 6 sind die Zu- und Abströmöffnungen 14 an den Wendelenden 3, 4, 3', 4' erfindungsgemäß in einer in Bezug auf die Strömungsrichtung schräg orientierten Ebene E (siehe Figur 2) angeordnet, an die die entsprechend entgegengesetzt schräg geschnittenen Verteilergehäuse angesetzt, d. h. vorzugsweise angeschweißt sind.Also with reference to the FIGS. 4 to 6 are the inlet and outlet openings 14 at the coil ends 3, 4, 3 ', 4' according to the invention in a plane with respect to the flow direction inclined plane E (see FIG. 2 ), to which the corresponding opposite obliquely cut distributor housing attached, that are preferably welded.

Damit stellen sich die Abschlussgehäuse 12 in Seitenansicht im Wesentlichen als rechtwinklige Dreiecke dar, deren Hypothenusen H die Anschlußseite für die Wendelenden 3, 4, 3', 4' bilden, an deren größeren Katheten K jeweils der zugehörige Heizmediumsanschluss 5 angeordnet ist.Thus, the end housing 12 are in side view substantially as rectangular triangles whose hypotenuses H form the connection side for the coil ends 3, 4, 3 ', 4', at their larger catheters K each associated heating medium connection 5 is arranged.

Dabei sind bevorzugt zwecks Optimierung der Zu- und Abströmverhältnisse für das Heizmedium die Abschlussgehäuse 12 mit Bezug auf die Rücklaufführung und Figur 2 vom unteren Flachrohr F bzw. vom Wärmetauscher 2 ausgehend mit ansteigender Hypothenuse H angeordnet.In this case, in order to optimize the inflow and outflow conditions for the heating medium, the closure housing 12 with respect to the return flow and FIG. 2 from the lower flat tube F or from the heat exchanger 2, starting with rising hypotenuse H arranged.

Aus gleichem Grunde, d. h. zwecks Optimierung können auch die den Wendelenden 3, 4, 3', 4' gegenüberstenden Abschlusswände 13 der Verteilergehäuse 12 konkav gewölbt oder innenseitig konkav profiliert ausgebildet sein, wie dies in der Schrägschnittdarstellung gemäß Figur 6 und 10 mit veranschaulicht ist.For the same reason, ie for the purpose of optimization, the coil ends 3, 4, 3 ', 4' opposite end walls 13 of the manifold housing 12 may concave or inside be profiled profiled, as shown in the oblique sectional view according to FIG. 6 and 10 is illustrated with.

Die vorerläuterten Abschlussgehäuse 12 sind aufgrund ihrer Einfachheit ohne weiteres auch als Tiefziehteile herstellbar, können aber auch jeweils aus einem ihrer Endform entsprechenden und aufzufaltenden Blechzuschnitt gebildet sein, wovon einer in Figur 2A für in Seitenansicht dreieckige Abschlussgehäuse 12 dargestellt ist, welche Form bevorzugt ist, da sich dadurch unter Bezug auf Figur 2 eine optimierte Verteilung der Rücklaufzuströmung und der Vorlaufabströmung des Heizmediums auf die beiden gewendelten Wärmetauscher 1, 2 ergibt. Möglich ist aber auch, wie vorerwähnt, die Herstellung bzw. Ausbildung der Verteilerkappen aus beispielsweise Feinguss, wobei vorteilhaft der jeweilige Heizmediumsanschluss 5 gleich einstückig mit ausgeformt ist (siehe Figur 10).The vorerläuterten termination housing 12 are due to their simplicity readily produced as deep-drawn parts, but can also be formed in each case from one of their final shape corresponding and aufzufaltenden sheet metal blank, one of which in FIG. 2A is shown for side view in triangular end housing 12, which form is preferred, as characterized by reference to FIG. 2 an optimized distribution of Rücklaufzströmung and the flow outflow of the heating medium to the two coiled heat exchanger 1, 2 results. But it is also possible, as mentioned above, the production or training of the distributor caps, for example investment casting, wherein advantageously the respective heating medium connection 5 is formed integrally with the same (see FIG. 10 ).

Gleiches gilt auch für Heizgeräte, deren Wärmetauscher nur aus einer einzigen Flachrohrwendel 1 besteht, was der Vollständigkeit in Figur 9 verdeutlicht ist, wobei es sich bei dieser Darstellung um die erfindungsgemäße Ausführungsform handelt, bei der die rück- und vorlaufseitigen Wendelenden 3, 4 des Flachrohres F schräg abgeschnitten und die daran angesetzten Abschlussgehäuse 12 entgegengesetzt entsprechend schräg, in Seitenansicht ein flaches Dreieck bildend, abgeschnitten sind. Figur 10 zeigt unter Einbezug des Heizmediumsanschlusses 5 eine bevorzgte Ausführungsform des Abschlussgehäuses 12 als Feingussteil.The same applies to heaters whose heat exchanger consists only of a single flat tube coil 1, which is the completeness in FIG. 9 is clarified, wherein this representation is the embodiment according to the invention, in which the return and feed side coil ends 3, 4 of the flat tube F obliquely cut off and attached thereto end housing 12 opposite obliquely, forming a flat triangle in side view, are cut off , FIG. 10 shows with reference to the heating medium connection 5 a preferred embodiment of the terminal housing 12 as a precision casting.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Wärmetauscherheat exchangers
22
Wärmetauscherheat exchangers
33
WendelendeWendel end
3'3 '
WendelendeWendel end
44
WendelendeWendel end
4'4 '
WendelendeWendel end
55
Heizmediumsanschlussheating medium
66
Abschlusswandend wall
77
Abschlusswandend wall
88th
Gehäusecasing
99
Mantelteiljacket part
1010
Abgasanschlussexhaust port
1111
Abgasraumexhaust gas chamber
1212
Abschlussgehäusetermination enclosure
1313
Abschlusswandend wall
1414
Zu- und AbströmöffnungInflow and outflow opening
BB
Brennerburner
BRBR
Brennkammercombustion chamber
Ee
Ebenelevel
FF
Flachrohrflat tube
HH
Hypothenusehypotenuse
KK
Kathetecathetus
RR
Randedge
RLRL
Rücklaufreturns
SS
Durchströmspaltthroughflow
VLVL
Vorlaufleader
WW
Wandwall

Claims (12)

  1. A heating device, comprising at least one heat exchanger (1, 2), which is coiled in the form of a helix around a coil axis, and through which a heating medium can flow, which, as a flat pipe, has coil ends (3, 4) and heating medium connections (5) on the front and rear sides and is implemented to define a correspondingly coiled through flow gap, a cap-like terminus housing (12) being attached liquid-tight on at least one coil end (3, 4) and the heating medium connection (5) being arranged thereon,
    characterized in
    that at least one coil end (3, 4) is cut off diagonally in relation to the coil axis and the terminus housing (12) is also implemented as correspondingly diagonal in reverse thereto on the coil end side.
  2. The heating device according to Claim 1, wherein at least two heat exchangers (1, 2) are provided, which are coiled in a helix, are parallel to one another, and are guided one inside the other, the terminus housing (12) being implemented as a distributor housing and being attached liquid-tight to the coil ends (3, 4, 3', 4'),
    characterized in
    that the coil ends (3, 4, 3', 4') of the heat exchangers (1, 2) are each arranged in pairs flush adjacent to one another, respective edges (R) of their adjacent extending walls (W) being connected liquid-tight to one another.
  3. The heating device according to Claim 2,
    characterized in
    that the edges (R) are materially bonded to one another, preferably welded.
  4. The heating device according to one of Claims 1 to 3,
    characterized in
    that the heating medium connection (5) on the cap-like terminus housing (12) is aligned oriented in the coil axis direction.
  5. The heating device according to one of Claims 1 to 4,
    characterized in
    that the terminus housing (12) is implemented essentially as a right triangle in a side view and therefore perpendicularly to the coil axis, the hypotenuse of the triangle being connected liquid-tight to the coil end (3, 4).
  6. The heating device according to Claim 5,
    characterized in
    that the heating medium connection (5) is arranged on the longer leg of the triangle.
  7. The heating device according to one of Claims 1 to 6,
    characterized in
    that the terminus housing (12), incorporating the heating medium connection (5), is implemented in the form of a cast part, preferably an investment cast part.
  8. The heating device according to one of Claims 1 to 6,
    characterized in
    that the terminus housing (12) is implemented from sheet-metal parts and the heating medium connection (5) is implemented as a connecting part attached to the sheet-metal parts.
  9. The heating device according to one of Claims 1 to 6,
    characterized in
    that the terminus housing (12) is implemented in the form of a deep-drawn part.
  10. The heating device according to one of Claims 1 to 9,
    characterized in
    that the cap-like terminus housing (12), in the section viewed transversely to the flow direction of the heating medium, is implemented essentially corresponding to a single or a multiple coil end opening cross-section.
  11. The heating device according to one of Claims 1 to 10,
    characterized in
    that the terminus walls (13) diametrically opposite to the coil ends (3, 4) in the terminus housing (12) are implemented as concavely curved at least on the heating medium side.
  12. The heating device according to one of Claims 1 to 11,
    characterized in
    that the at least one heat exchanger (1, 2) encloses a combustion chamber, which is delimited on each end by a terminus wall (6, 7) viewed in the coil axis direction, a housing (8), which is formed from a shell part (9) and the terminus walls (6, 7), enclosing the heat exchanger (1) while forming an exhaust gas chamber (11) .
EP07721886A 2006-02-03 2007-02-02 Heating device Active EP1979696B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006004900A DE102006004900A1 (en) 2006-02-03 2006-02-03 heater
PCT/DE2007/000216 WO2007087801A2 (en) 2006-02-03 2007-02-02 Heating device

Publications (2)

Publication Number Publication Date
EP1979696A2 EP1979696A2 (en) 2008-10-15
EP1979696B1 true EP1979696B1 (en) 2012-04-11

Family

ID=38229686

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07721886A Active EP1979696B1 (en) 2006-02-03 2007-02-02 Heating device

Country Status (6)

Country Link
US (1) US20100044011A1 (en)
EP (1) EP1979696B1 (en)
AT (1) ATE553346T1 (en)
CA (1) CA2637845C (en)
DE (1) DE102006004900A1 (en)
WO (1) WO2007087801A2 (en)

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Also Published As

Publication number Publication date
DE102006004900A1 (en) 2007-08-16
CA2637845C (en) 2014-10-07
US20100044011A1 (en) 2010-02-25
WO2007087801A2 (en) 2007-08-09
WO2007087801A3 (en) 2007-09-20
ATE553346T1 (en) 2012-04-15
EP1979696A2 (en) 2008-10-15
CA2637845A1 (en) 2007-08-09

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