EP1398580A2 - Helical heat exchanger - Google Patents

Helical heat exchanger Download PDF

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Publication number
EP1398580A2
EP1398580A2 EP03020369A EP03020369A EP1398580A2 EP 1398580 A2 EP1398580 A2 EP 1398580A2 EP 03020369 A EP03020369 A EP 03020369A EP 03020369 A EP03020369 A EP 03020369A EP 1398580 A2 EP1398580 A2 EP 1398580A2
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EP
European Patent Office
Prior art keywords
heat exchanger
inlet
outlet
helical
area
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.)
Withdrawn
Application number
EP03020369A
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German (de)
French (fr)
Other versions
EP1398580A3 (en
Inventor
Frank Altendorf
Walter Bornscheuer
Jan Plawer
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.)
Vaillant GmbH
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Vaillant GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AT1022003A external-priority patent/AT412913B/en
Application filed by Vaillant GmbH filed Critical Vaillant GmbH
Publication of EP1398580A2 publication Critical patent/EP1398580A2/en
Publication of EP1398580A3 publication Critical patent/EP1398580A3/en
Withdrawn legal-status Critical Current

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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

Definitions

  • the invention relates to a helical heat exchanger.
  • Such heat exchangers are used, for example, in heaters.
  • the helical heat exchanger has several spiral circulations, between which there is always a gap. Inside is the helical heat exchanger a burner that burns a hydrocarbon-air mixture. Exhaust gases from the burner flow through the column of the helical heat exchanger, that of the one to be heated Water flows through, and are cooled down. Then the exhaust gases are in collected in an exhaust manifold and derived in an exhaust duct.
  • the problem is solved in that the outer Helical revolutions are compressed in the area of the entry or exit. This ensures that the helical heat exchanger approximates the shape of a cylinder.
  • Helical heat exchanger according to the prior art have opposite inlets and outlets. This is where the compressed areas of the inlet and outlet on a line parallel to the central axis the helix. While in the remaining area of the heat exchanger a certain number (n) Helical revolutions are next to each other, are in the entry / exit area n + 1 Helical revolutions side by side. For this reason, the constrictions are special large or the cross-sections particularly small, which causes large pressure losses on these Jobs.
  • the invention has for its object the pressure losses in a helical To minimize heat exchangers with inlet and outlet.
  • the proposed measures avoid being parallel on a line the entry and exit of the central axis of the helix are opposite and thus excessive Constrictions can be dispensed with.
  • the features of claim 2 have the advantage that the medium to be cooled can flow between helical revolutions.
  • the features of claim 8 have the advantage that the local reduction the width of a pipe in one direction by increasing the width of the same pipe is compensated in the perpendicular direction, so that the cross section is approximately the same remains. This reduces the pressure loss.
  • a helical heat exchanger 1 according to FIGS. 1 to 3 according to the prior art has an inlet 2 and an outlet 3. There are several in between Helical revolutions around a central axis 6. The area 4 in which the entry 2 into the helix enters, and the area 5, in which the exit 3 exits the coil, are on a line parallel to the central axis 6 of the helix. The pipes are in areas 4 and 5 narrowed so that the heat exchanger has an approximately cylindrical shape. Between individual spiral revolutions are located in column 7.
  • An inventive helical heat exchanger 1 according to FIGS. 4 and 5 differs in that inlet 2 and outlet 3 are offset by 80 °, whereby the Area 4 in which entry 2 enters the helix and area 5 in which exit 3 emerges from the coil, do not lie one behind the other.
  • the constrictions 8 are thereby less than in the prior art.
  • Fig. 6 shows in area 4, in which the inlet 2 enters the helix an expansion, which is suitable to compensate for the narrowing in such a way that the pipe cross-section is not narrowed.
  • FIG. 7 shows an alternative design of a heat exchanger according to the invention see, where the inlet 2 and the outlet 3 are offset by 180 ° and thus in the same Show direction.

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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)

Abstract

Helical heat exchanger (1) comprises an inlet and an outlet. The region (4) in which the inlet enters the helix and the region (5) in which the outlet exits the helix do not overlap when viewed in the direction of the central axis (6) of the helix. Preferred Features: The heat exchanger has at least two turns. The region between the inlet and outlet in the direction of the periphery of the circle is small, preferably less than 90degrees.

Description

Die Erfindung bezieht sich auf einen wendelförmigen Wärmeaustauscher.The invention relates to a helical heat exchanger.

Derartige Wärmeaustauscher werden zum Beispiel in Heizgeräten eingesetzt. Der wendelförmige Wärmeaustauscher verfügt über mehrere Wendelumläufe, zwischen denen jeweils ein Spalt besteht. Im Inneren des wendelförmigen Wärmeaustauschers befindet sich ein Brenner, der ein Kohlenwasserstoff-Luft-Gemisch verbrennt. Die Abgase des Brenners strömen durch die Spalte des wendelförmigen Wärmeaustauschers, der von zu erhitzendem Wasser durchströmt wird, und werden dabei abgekühlt. Anschließend werden die Abgase in einem Abgassammler gesammelt und in einer Abgasführung abgeleitet.Such heat exchangers are used, for example, in heaters. The helical heat exchanger has several spiral circulations, between which there is always a gap. Inside is the helical heat exchanger a burner that burns a hydrocarbon-air mixture. Exhaust gases from the burner flow through the column of the helical heat exchanger, that of the one to be heated Water flows through, and are cooled down. Then the exhaust gases are in collected in an exhaust manifold and derived in an exhaust duct.

Da derartige wendelförmige Wärmeaustauscher meist in zylindrischen Brennkammern eingesetzt werden, besteht das Problem, dass der Spalt zwischen dem jeweils äußeren Wendelumlauf und der Brennkammerwand nicht zu groß sein darf, damit keine nennenswerten Abgasströme heiß in den Abgassammler gelangen.Since such helical heat exchangers mostly in cylindrical combustion chambers are used, the problem is that the gap between the outer Spiral circulation and the combustion chamber wall must not be too large, so none significant exhaust gas flows get hot into the exhaust manifold.

Gemäß dem Stand der Technik wird das Problem dadurch gelöst, dass die äußeren Wendelumläufe im Bereich des Eintritts beziehungsweise Austritts gestaucht werden. Hierdurch wird erreicht, dass der wendelförmige Wärmeaustauscher annähernd die Form eines Zylinders aufweist. Wendelförmige Wärmeaustauscher gemäß dem Stand der Technik verfügen über gegenüberliegende Ein- und Auslässe. Hierdurch befinden sich die gestauchten Bereiche des Einlasses und Auslasses auf einer Linie parallel zur Mittelachse der Wendel. Während im restlichen Bereich des Wärmeaustauschers eine bestimmte Anzahl (n) Wendelumläufe nebeneinander liegen, befinden sich im Bereich Eintritt / Austritt n+1 Wendelumläufe nebeneinander. Aus diesem Grund sind die Einschnürungen besonders groß beziehungsweise die Querschnitte besonders klein, was große Druckverluste an diesen Stellen zur Folge hat.According to the prior art, the problem is solved in that the outer Helical revolutions are compressed in the area of the entry or exit. This ensures that the helical heat exchanger approximates the shape of a cylinder. Helical heat exchanger according to the prior art have opposite inlets and outlets. This is where the compressed areas of the inlet and outlet on a line parallel to the central axis the helix. While in the remaining area of the heat exchanger a certain number (n) Helical revolutions are next to each other, are in the entry / exit area n + 1 Helical revolutions side by side. For this reason, the constrictions are special large or the cross-sections particularly small, which causes large pressure losses on these Jobs.

Der Erfindung liegt die Aufgabe zugrunde, die Druckverluste bei einem wendelförmigen Wärmeaustauscher mit Eintritt und Austritt zu minimieren.The invention has for its object the pressure losses in a helical To minimize heat exchangers with inlet and outlet.

Erfindungsgemäß wird dies bei einem wendelförmigen Wärmeaustauscher der eingangs erwähnten Art durch die kennzeichnenden Merkmale des unabhängigen Anspruches erreicht.According to the invention, this is the case in the case of a helical heat exchanger mentioned type by the characterizing features of the independent claim reached.

Durch die vorgeschlagenen Maßnahmen wird vermieden, dass sich auf einer Linie parallel der Mittelachse der Wendel Eintritt und Austritt gegenüberlägen und somit auf übermäßige Einschnürungen verzichtet werden kann.The proposed measures avoid being parallel on a line the entry and exit of the central axis of the helix are opposite and thus excessive Constrictions can be dispensed with.

Durch die Merkmale des Anspruches 2 ergibt sich der Vorteil, dass zu kühlendes Medium zwischen Wendelumläufen strömen kann.The features of claim 2 have the advantage that the medium to be cooled can flow between helical revolutions.

Durch die Merkmale des Anspruches 3 ergibt sich der Vorteil, dass dadurch, dass zwischen Eintritt und Austritt eine Wendelumläufe weniger vorhanden ist, auf übermäßige Einschnürungen verzichtet werden kann.The features of claim 3 result in the advantage that between Entry and exit of one helix less exists on excessive Constrictions can be dispensed with.

Gemäß den Merkmalen des Anspruchs 4 ergibt sich der Vorteil, dass nahezu über den gesamten Umfang die gleiche Anzahl Wendelumläufe vorhanden sind. According to the features of claim 4, there is the advantage that almost over the the same number of spiral revolutions are present throughout the circumference.

Durch die Merkmale des Anspruches 5 ergibt sich der Vorteil, dass Eintritt und Austritt derart angeordnet sind, dass die Anschlüsse sich einerseits nicht gegenseitig behindern und andererseits nahe beieinander sind.The features of claim 5 result in the advantage that entry and exit in such a way are arranged that the connections on the one hand do not hinder each other and on the other hand, are close to each other.

Gemäß den Merkmalen des Anspruchs 6 ergibt sich der Vorteil, dass - alternativ zu den Ansprüchen 4 und 5 - die Anschlüsse in eine Richtung weisen, so dass ohne Umlenkung die Leitungen, die zum Eintritt und Austritt führen nebeneinander geführt werden können.According to the features of claim 6, there is the advantage that - as an alternative to the Claims 4 and 5 - the connections point in one direction, so that the without deflection Lines that lead to the entry and exit can be routed side by side.

Gemäß den Merkmalen des Anspruchs 7 ergibt sich der Vorteil, dass trotz Wendelform der Wärmeaustauscher nahezu die Form eines Zylinders hat. Hierbei ist es jedoch nicht notwendig, derart starke Verengungen wie beim Stand der Technik vorzusehen.According to the features of claim 7, there is the advantage that despite the helical shape Heat exchanger has almost the shape of a cylinder. However, it is not here necessary to provide such narrow constrictions as in the prior art.

Durch die Merkmale des Anspruches 8 ergibt sich der Vorteil, dass die lokale Verminderung der Breite eines Rohres in einer Richtung durch Vergrößerung der Breite desselben Rohres in senkrechter Richtung dazu kompensiert wird, so dass der Querschnitt annähernd gleich bleibt. Hierdurch wird der Druckverlust gemindert.The features of claim 8 have the advantage that the local reduction the width of a pipe in one direction by increasing the width of the same pipe is compensated in the perpendicular direction, so that the cross section is approximately the same remains. This reduces the pressure loss.

Gemäß den Merkmalen der Ansprüche 9 und 10 werden vorteilhaften Ausgestaltungen der Stauchungen beschrieben.According to the features of claims 9 and 10, advantageous embodiments of the Compressions described.

Die Erfindung wird nun anhand der Zeichnungen näher erläutert. Dabei zeigen

  • Fig. 1 einen wendelförmigen Wärmeaustauscher gemäß dem Stand der Technik,
  • Fig. 2 und Fig. 3 denselben wendelförmigen Wärmeaustauscher gemäß dem Stand der Technik aus jeweils einer anderen Perspektive,
  • Fig. 4 einen erfindungsgemäßen Wärmeaustauscher,
  • Fig. 5 denselben erfindungsgemäßen Wärmeaustauscher aus einer anderen Perspektive sowie
  • Fig. 6 einen erfindungsgemäßen Wärmeaustauscher in vorteilhafter Ausgestaltung.
  • Fig. 7 einen alternativen, erfindungsgemäßen Wärmeaustauscher.
The invention will now be explained in more detail with reference to the drawings. Show
  • 1 shows a helical heat exchanger according to the prior art,
  • 2 and Fig. 3 the same helical heat exchanger according to the prior art, each from a different perspective,
  • 4 shows a heat exchanger according to the invention,
  • Fig. 5 the same heat exchanger according to the invention from a different perspective as well
  • Fig. 6 shows a heat exchanger according to the invention in an advantageous embodiment.
  • Fig. 7 shows an alternative heat exchanger according to the invention.

Ein wendelförmiger Wärmeaustauscher 1 nach Fig. 1 bis 3 gemäß dem Stand der Technik verfügt über einen Eintritt 2 und einen Austritt 3. Dazwischen befinden sich mehrere Wendelumläufe um eine Mittelachse 6. Der Bereich 4, in dem der Eintritt 2 in die Wendel eintritt, und der Bereich 5, in dem der Austritt 3 aus der Wendel austritt, befinden sich auf einer Linie parallel der Mittelachse 6 der Wendel. In den Bereichen 4 und 5 sind die Rohre verengt, damit der Wärmeaustauscher annähernd zylindrische Form aufweist. Zwischen den einzelnen Wendelumläufe befinden sich Spalte 7.A helical heat exchanger 1 according to FIGS. 1 to 3 according to the prior art has an inlet 2 and an outlet 3. There are several in between Helical revolutions around a central axis 6. The area 4 in which the entry 2 into the helix enters, and the area 5, in which the exit 3 exits the coil, are on a line parallel to the central axis 6 of the helix. The pipes are in areas 4 and 5 narrowed so that the heat exchanger has an approximately cylindrical shape. Between individual spiral revolutions are located in column 7.

Ein erfindungsgemäßer, wendelförmiger Wärmeaustauscher 1 gemäß Fig. 4 und 5 unterscheidet sich dadurch, dass Eintritt 2 und Austritt 3 um 80° versetzt sind, wodurch der Bereich 4, in dem der Eintritt 2 in die Wendel eintritt, und der Bereich 5, in dem der Austritt 3 aus der Wendel austritt, nicht hintereinander liegen. Die Einschnürungen 8 sind hierdurch geringer als beim Stand der Technik.An inventive helical heat exchanger 1 according to FIGS. 4 and 5 differs in that inlet 2 and outlet 3 are offset by 80 °, whereby the Area 4 in which entry 2 enters the helix and area 5 in which exit 3 emerges from the coil, do not lie one behind the other. The constrictions 8 are thereby less than in the prior art.

Fig. 6 zeigt im Bereich 4, in dem der Eintritt 2 in die Wendel eintritt eine Aufweitung, welche dazu geeignet ist, die Verengung dahingehend auszugleichen, dass der Rohrquerschnitt nicht verengt wird. Fig. 6 shows in area 4, in which the inlet 2 enters the helix an expansion, which is suitable to compensate for the narrowing in such a way that the pipe cross-section is not narrowed.

In Fig. 7 ist eine alternative Bauform eines erfindungsgemäßen Wärmeaustauschers zu sehen, bei dem der Eintritt 2 und der Austritt 3 um 180° versetzt sind und somit in die gleiche Richtung zeigen.7 shows an alternative design of a heat exchanger according to the invention see, where the inlet 2 and the outlet 3 are offset by 180 ° and thus in the same Show direction.

Claims (10)

Wendelförmiger Wärmeaustauscher (1) mit einem Eintritt (2) und einem Austritt (3), dadurch gekennzeichnet, dass der Bereich (4), in dem der Eintritt (2) in die Wendel eintritt, und der Bereich (5), in dem der Austritt (3) aus der Wendel austritt, sich bei der Ansicht in Richtung Mittelachse (6) der Wendel nicht überschneidet.Helical heat exchanger (1) with an inlet (2) and an outlet (3), characterized in that the area (4) in which the inlet (2) enters the coil and the area (5) in which the Outlet (3) emerges from the helix, the helix does not overlap when viewed in the direction of the central axis (6). Wendelförmiger Wärmeaustauscher (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass der Wärmeaustauscher (1) über mindestens 2 Wendelumläufe verfügt.Helical heat exchanger (1) according to claim 1, characterized in that the heat exchanger (1) has at least 2 spiral circulations. Wendelförmiger Wärmeaustauscher (1) gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, dass der wendelförmige Wärmeaustauscher (1) in dem Bereich zwischen Eintritt (2) und Austritt (3) in Richtung parallel zur Mittelachse (6) der Wendel über einen Wendelumlauf weniger als im übrigen Bereich verfügt. Helical heat exchanger (1) according to claim 1 or 2, characterized in that the helical heat exchanger (1) in the area between the inlet (2) and outlet (3) in the direction parallel to the central axis (6) of the helix over one helical revolution less than in remaining area. Wendelförmiger Wärmeaustauscher (1) gemäß Anspruch 3, dadurch gekennzeichnet, dass der Bereich zwischen Eintritt (2) und Austritt (3) in Richtung des Kreisumfangs klein, vorzugsweise kleiner 90° ist.Helical heat exchanger (1) according to claim 3, characterized in that the area between the inlet (2) and outlet (3) in the direction of the circumference is small, preferably less than 90 °. Wendelförmiger Wärmeaustauscher (1) gemäß einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Eintritt (2) und der Austritt (3) einen Winkel zwischen 80 und 100° bilden.Helical heat exchanger (1) according to one of claims 1 to 4, characterized in that the inlet (2) and the outlet (3) form an angle between 80 and 100 °. Wendelförmiger Wärmeaustauscher (1) gemäß Anspruch 3, dadurch gekennzeichnet, dass der Eintritt (2) und der Austritt (3) einen Winkel zwischen 160 und 200° bilden.Helical heat exchanger (1) according to claim 3, characterized in that the inlet (2) and the outlet (3) form an angle between 160 and 200 °. Wendelförmiger Wärmeaustauscher (1) gemäß einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Rohrquerschnitt des Wärmeaustauschers (1) im der Bereich (4), in dem der Eintritt (2) in die Wendel eintritt, und / oder dem Bereich (5), in dem der Austritt (3) aus der Wendel austritt, in Richtung parallel zur Mittelachse (6) der Wendel zumindest in einem Wendelumlauf eine schmalere Breite aufweist.Helical heat exchanger (1) according to one of claims 1 to 6, characterized in that the tube cross section of the heat exchanger (1) in the area (4) in which the inlet (2) enters the coil and / or the area (5 ), in which the outlet (3) exits the coil, has a narrower width in the direction parallel to the central axis (6) of the coil, at least in one coil revolution. Wendelförmiger Wärmeaustauscher (1) gemäß Anspruch 7, dadurch gekennzeichnet, dass der Rohrquerschnitt des Wärmeaustauschers (1) im der Bereich (4), in dem der Eintritt (2) in die Wendel eintritt, und / oder dem Bereich (5), in dem der Austritt (3) aus der Wendel austritt, in Richtung senkrecht zur Mittelachse (6) der Wendel eine größere Breite aufweist.Helical heat exchanger (1) according to claim 7, characterized in that the tube cross section of the heat exchanger (1) in the area (4) in which the inlet (2) enters the coil and / or the area (5) in which the outlet (3) exits the helix, has a greater width in the direction perpendicular to the central axis (6). Wendelförmiger Wärmeaustauscher (1) gemäß einem der Ansprüche 7 oder 8, dadurch gekennzeichnet, dass das Rohr des Eintritts (2) und / oder Austritts (3) gestaucht ist. Helical heat exchanger (1) according to one of claims 7 or 8, characterized in that the tube of the inlet (2) and / or outlet (3) is compressed. Wendelförmiger Wärmeaustauscher (1) gemäß einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass das Rohr neben dem Eintritt (2) und / oder Austritt (3) gestaucht ist.Helical heat exchanger (1) according to one of claims 7 to 9, characterized in that the tube is compressed in addition to the inlet (2) and / or outlet (3).
EP03020369A 2002-09-16 2003-09-10 Helical heat exchanger Withdrawn EP1398580A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10243077 2002-09-16
DE10243077 2002-09-16
AT1022003A AT412913B (en) 2003-01-27 2003-01-27 Helical heat exchanger used in a heating device comprises a region in which an inlet enters the helix and a region in which an outlet exits the helix which do not overlap when viewed in the direction of the central axis of the helix
AT1022003 2003-01-27

Publications (2)

Publication Number Publication Date
EP1398580A2 true EP1398580A2 (en) 2004-03-17
EP1398580A3 EP1398580A3 (en) 2004-12-15

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EP03020369A Withdrawn EP1398580A3 (en) 2002-09-16 2003-09-10 Helical heat exchanger

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EP (1) EP1398580A3 (en)
DE (1) DE10341644B4 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1813882A1 (en) * 2006-01-30 2007-08-01 Joseph Le Mer Condensing heat exchanger
CN109387109A (en) * 2018-11-21 2019-02-26 中国科学院上海技术物理研究所 A kind of class spiral flow channel structure of loop heat pipe condenser

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2700608A1 (en) * 1993-01-15 1994-07-22 Le Mer Joseph Heat exchanger element, method and device for manufacturing it.
EP1039246A2 (en) * 1999-03-19 2000-09-27 VIESSMANN WERKE GmbH & CO. Compact boiler
JP2001241866A (en) * 2000-02-24 2001-09-07 Sanyo Electric Co Ltd Heat exchanger

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5660165A (en) 1994-06-07 1997-08-26 Bradford White Corporation Back-up heater
DE19634200A1 (en) 1996-08-23 1998-02-26 Wolf Gmbh Heat exchanger for a boiler, especially a wall-hung gas boiler

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2700608A1 (en) * 1993-01-15 1994-07-22 Le Mer Joseph Heat exchanger element, method and device for manufacturing it.
EP1039246A2 (en) * 1999-03-19 2000-09-27 VIESSMANN WERKE GmbH & CO. Compact boiler
JP2001241866A (en) * 2000-02-24 2001-09-07 Sanyo Electric Co Ltd Heat exchanger

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN Bd. 2000, Nr. 26, 1. Juli 2002 (2002-07-01) & JP 2001 241866 A (SANYO ELECTRIC CO LTD), 7. September 2001 (2001-09-07) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1813882A1 (en) * 2006-01-30 2007-08-01 Joseph Le Mer Condensing heat exchanger
FR2896856A1 (en) * 2006-01-30 2007-08-03 Mer Joseph Le HEAT EXCHANGER CONDENSATION
CN109387109A (en) * 2018-11-21 2019-02-26 中国科学院上海技术物理研究所 A kind of class spiral flow channel structure of loop heat pipe condenser

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Publication number Publication date
EP1398580A3 (en) 2004-12-15
DE10341644B4 (en) 2021-09-23
DE10341644A1 (en) 2004-04-15

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