EP0994321B1 - Heat exchanger for fuel fired water heater - Google Patents
Heat exchanger for fuel fired water heater Download PDFInfo
- Publication number
- EP0994321B1 EP0994321B1 EP19990120228 EP99120228A EP0994321B1 EP 0994321 B1 EP0994321 B1 EP 0994321B1 EP 19990120228 EP19990120228 EP 19990120228 EP 99120228 A EP99120228 A EP 99120228A EP 0994321 B1 EP0994321 B1 EP 0994321B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- lamellae
- tubes
- water
- passage
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 12
- 239000000446 fuel Substances 0.000 title 1
- 239000000567 combustion gas Substances 0.000 claims description 9
- 241000446313 Lamella Species 0.000 claims description 5
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 8
- 238000005476 soldering Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
- F24H1/26—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body
-
- 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
- F24H1/44—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with combinations of two or more of the types covered by groups F24H1/24 - F24H1/40 , e.g. boilers having a combination of features covered by F24H1/24 - F24H1/40
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
- F24H9/001—Guiding means
- F24H9/0026—Guiding means in combustion gas channels
-
- 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
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
- F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
- F28F1/325—Fins with openings
Definitions
- the invention relates to a heat exchanger according to the preamble of the main claim.
- a heat exchanger is known from GB-A-2 110 811.
- the fins of the heat exchanger are pushed onto the water-carrying pipes and then z. B. fixed in a vacuum soldering process or by soldering in an H 2 - continuous furnace on the water pipes.
- Such heat exchangers are produced in large numbers, the soldering processes require additional effort, special furnaces are required in which the soldering process can take place.
- the inventive design of the slats according to the Features of claim 1 has the advantage that a resilient Press fit of the pipes in the through openings of the fins is realized, resulting in soldering or the like material connection can be largely dispensed with.
- the Introduce the radially around the circumference of the lamella openings distributed slots does not require an additional one Work step, since this at the same time as the Openings in the slats, e.g. in the so-called speed nut process can be produced.
- the contact surfaces that the hot combustion gases are directly applied, additionally through a material connection, in particular can be secured by laser welding.
- the contact surface between the water pipes and the fins of the heat exchanger will be more advantageous Way enlarged in that the through openings with enclosing the pipes and from the lamellar plates pulled out collar are provided.
- the pipes in the through openings of the fins further advantageous if the collar is one to the axis of the Passage opening inclined course. A further bending in front of the collar ensures that by the pressing process no undefined fault in the area the through opening is created.
- the conical course of the collar additionally the joining process relieved and the required thermal contact guaranteed.
- FIG. 1 is a fireplace insert with one in it arranged heat exchanger shown.
- Figure 2 shows one Partial view of the spacers provided in the slats according to section A-A in Figure 1.
- Figure 3 shows a partial view along the pipe axis provided in the fins Section B-B in Figure 1 according to the state of the art and
- Figure 4 is a partial view of the in the lamellae provided pipe axis according to section B-B according to the invention.
- FIG 1 is a gas heated water heater with a Burner 10, a combustion chamber 12 and a heat exchanger 14 shown.
- the heat exchanger 14 has several parallel tubes 16 with a round Cross-section that lead to the water to be heated.
- the Heat exchanger 14 is constructed in several layers, the in a plane extending pipe sections parallel or be successively flowed through by the water to be heated can.
- a packet of fins 18 sits on the tubes 16, which are spaced apart with a width b. about the gaps 20 that form occur in it combustion gases flowing along in interaction with the water to be heated in the pipes 16 before being used as exhaust gases not cooled the heat exchanger 14 over a Exhaust gas discharge shown.
- the slats 18 have in the edge region of the Through openings evenly distributed over the circumference Radial slots 22 on the edge area in several Subdivide edge segments 24. These radial slots 22 or the forming edge segments 24 can be in one so-called "speed nut" process together with the Through openings for the water-carrying pipes 16 in be produced in one work step.
- the size of the in the slats 18 introduced through openings are with matched the diameter of the water-carrying pipes 16 so that the edge segments 24 clamp on the surface of the water pipes 16 sit on ( Figure 3).
- the closest to the burner 10 are the Edge areas of the through openings of the lamellae 18 additionally provided with a collar 26.
- this is Slat area with a temperature of approx. 1200 ° C applied.
- the collar 26 in this area Contact surface or the heat conduction to the water-bearing Tubes 16 enlarged, which ensures a long life of the Connection is also guaranteed in this area.
- the edge segment area of the first layer of the heat exchanger 14, which is directly exposed to the hot combustion gases, is additionally achieved by laser welding with the connected water-carrying pipe 16. So that will ensures that even in the so-called “dry-fall case", d. H. there is temporarily no water in the tube 16, one good heat-dissipating connection is retained, one local overheating of the heat exchanger 14 prevented.
- FIG. 4 Another embodiment for realizing a resilient press fit of the tubes 16 in the through openings shows Figure 4.
- the collar 26 has one to the axis the through opening inclined course 41 so that a conically narrowing through opening is created.
- An additional one Collar 26 upstream bend 43 ensure that by the pressing process no undefined distortion in the area the through opening is created.
- spacers 28 are used.
- the spacers 28 are produced in that in the Slats 18 openings 30 are introduced such that the exhibitions 32 each created at the support adjacent lamella 18.
- the Diameter of these spacers 28 in the edge areas of the heat exchanger 14 is larger than inside of the heat exchanger 14.
- the exhibitions 32 contribute a turbulence of the combustion gases, whereby the Efficiency of heat transfer is increased.
- the one in figure 2 arched exhibitions 32 shown support the Flow diversion or swirling.
- the combustion chamber 12 of the gas-heated water heater 14 is provided with water-carrying channels 34, the hydraulic with the water-carrying pipes 16 of the heat exchanger 14 are connected.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Details Of Fluid Heaters (AREA)
Description
Die Erfindung geht aus von einem Wärmeübertrager nach der dem Oberbegriff des Hauptanspruchs. So eine Wärmeübertrager ist aus der GB-A-2 110 811 bekannt. Bei den bekannten Wärmeübertragern dieser Gattung (z. B. DE 196 26 321 A1) werden die Lamellen des Wärmeübertragers auf die wasserführenden Rohre geschoben und danach z. B. im Vakuum- Lötverfahren oder durch Löten in einem H2- Durchlaufofen auf den Wasserrohren fest fixiert. Derartige Wärmeübertrager werden in hohen Stückzahlen produziert, die Lötverfahren erfordern zusätzlichen Aufwand, wobei spezielle Öfen benötigt werden, in denen der Lötvorgang erfolgen kann.The invention relates to a heat exchanger according to the preamble of the main claim. Such a heat exchanger is known from GB-A-2 110 811. In the known heat exchangers of this type (z. B. DE 196 26 321 A1), the fins of the heat exchanger are pushed onto the water-carrying pipes and then z. B. fixed in a vacuum soldering process or by soldering in an H 2 - continuous furnace on the water pipes. Such heat exchangers are produced in large numbers, the soldering processes require additional effort, special furnaces are required in which the soldering process can take place.
Die erfindungsgemäße Ausbildung der Lamellen gemäß den Merkmalen des Anspruchs 1 hat den Vorteil, daß ein federnder Preßsitz der Rohre in den Durchgangsöffnungen der Lamellen realisiert wird, wodurch auf ein Löten oder eine ähnliche stoffliche Verbindung weitgehend verzichtet werden kann. Das Einbringen der radial um den Umfang der Lamellenöffnungen verteilten Schlitze erfordert keinen zusätzlichen Arbeitsschritt, da diese gleichzeitig mit dem Einbringen der Öffnungen in die Lamellen, z.B. im sogenannten speed nut"-Verfahren hergestellt werden können.The inventive design of the slats according to the Features of claim 1 has the advantage that a resilient Press fit of the pipes in the through openings of the fins is realized, resulting in soldering or the like material connection can be largely dispensed with. The Introduce the radially around the circumference of the lamella openings distributed slots does not require an additional one Work step, since this at the same time as the Openings in the slats, e.g. in the so-called speed nut process can be produced.
Durch die Merkmale der Unteransprüche sind vorteilhafte Ausgestaltungen und Weiterbildungen der Anordnung nach dem Hauptanspruch möglich.The features of the subclaims are advantageous Refinements and developments of the arrangement according to Main claim possible.
Es ist vorteilhaft, wenn die Kontaktflächen, die von den heißen Verbrennungsgasen unmittelbar beaufschlagt werden, zusätzlich durch eine stoffliche Verbindung, insbesondere durch Laserschweißen, gesichert werden.It is advantageous if the contact surfaces that the hot combustion gases are directly applied, additionally through a material connection, in particular can be secured by laser welding.
Die Kontaktfläche zwischen den wasserführenden Rohren und den Lamellen des Wärmeübertragers wird in vorteilhafter Weise dadurch vergrößert, daß die Durchgangsöffnungen mit die Rohre umschließenden und aus den Lamellenblechen herausgezogenen Kragen versehen sind.The contact surface between the water pipes and the fins of the heat exchanger will be more advantageous Way enlarged in that the through openings with enclosing the pipes and from the lamellar plates pulled out collar are provided.
Zur Realisierung eines besonders gut federnden Preßsitzes der Rohre in den Durchgangsöffnungen der Lamellen ist es weiter vorteilhaft, wenn der Kragen einen zur Achse der Durchgangsöffnung hin geneigten Verlauf aufweist. Eine weitere Anbiegung vor dem Kragen gewährleistet, daß durch den Aufpreßvorgang keine undefinierte Verwerfung im Bereich der Durchgangsöffnung entsteht. Außerdem wird durch den konischen Verlauf des Kragens zusätzlich der Fügevorgang erleichtert und der erforderliche Wärmekontakt garantiert.To realize a particularly well-resilient press fit it is the pipes in the through openings of the fins further advantageous if the collar is one to the axis of the Passage opening inclined course. A further bending in front of the collar ensures that by the pressing process no undefined fault in the area the through opening is created. In addition, the conical course of the collar additionally the joining process relieved and the required thermal contact guaranteed.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. In Figur 1 ist eine Brennzelle mit einem darin angeordneten Wärmeübertrager dargestellt. Figur 2 zeigt eine Teilansicht der in den Lamellen vorgesehen Abstandshalter gemäß Schnitt A-A in Figur 1. Figur 3 zeigt eine Teilansicht entlang der in den Lamellen vorgesehenen Rohrachse nach Schnitt B-B in Figur 1 gemäß dem Stand der Technik und Figur 4 eine Teilansicht der in den Lamellen vorgesehenen Rohrachse nach Schnitt B-B gemäß der Erfindung.An embodiment of the invention is in the drawing shown and in the description below explained. In Figure 1 is a fireplace insert with one in it arranged heat exchanger shown. Figure 2 shows one Partial view of the spacers provided in the slats according to section A-A in Figure 1. Figure 3 shows a partial view along the pipe axis provided in the fins Section B-B in Figure 1 according to the state of the art and Figure 4 is a partial view of the in the lamellae provided pipe axis according to section B-B according to the invention.
In Figur 1 ist ein gasbeheizter Wassererhitzer mit einem
Brenner 10, einer Brennkammer 12 und einem Wärmeübertrager
14 dargestellt. Der Wärmeübertrager 14 weist mehrere
parallel zueinander verlaufende Rohre 16 mit einem runden
Querschnitt auf, die das zu erhitzende Wasser führen. Der
Wärmeübertrager 14 ist mehrlagig ausgebildet, wobei die sich
in einer Ebene erstreckenden Rohrabschnitte parallel oder
hintereinander vom zu erhitzenden Wasser durchströmt werden
können. Auf den Rohren 16 sitzt ein Paket von Lamellen 18,
die mit einer Breite b voneinander beabstandet sind. Über
die sich ausbildenden Spalte 20 treten die darin
entlangströmenden Verbrennungsgase in Wechselwirkung mit dem
in den Rohren 16 aufzuheizenden Wasser, bevor sie als Abgase
abgekühlt den Wärmeübertrager 14 über eine nicht
dargestellte Abgasabführung verlassen.In Figure 1 is a gas heated water heater with a
Die Lamellen 18 weisen im Randbereich der
Durchgangsöffnungen gleichmäßig über den Umfang verteilte
Radialschlitze 22 auf, die den Randbereich in mehrere
Randsegmente 24 unterteilen. Diese Radialschlitze 22 bzw.
die sich ausbildenden Randsegmente 24 können in einem
sogenannten "Speed-Nut"-Verfahren zusammen mit den
Durchgangsöffnungen für die wasserführenden Rohre 16 in
einem Arbeitsschritt hergestellt werden. Die Größe der in
die Lamellen 18 eingebrachten Durchgangsöffnungen sind mit
dem Durchmesser der wasserführenden Rohre 16 so abgestimmt,
daß die Randsegmente 24 klemmend auf der Oberfläche der
wasserführenden Rohre 16 aufsitzen (Figur 3).The
Bei der ersten Lage des Wärmeübertragers 14, die am
dichtesten zum Brenner 10 angeordnet ist, sind die
Randbereiche der Durchgangsöffnungen der Lamellen 18
zusätzlich mit einem Kragen 26 versehen. Wie das in Figur 1
dargestellte Temperaturniveau zeigt, wird dieser
Lamellenbereich mit einer Temperatur von ca. 1200°C
beaufschlagt. Durch die Kragen 26 wird in diesem Bereich die
Kontaktfläche bzw. die Wärmeleitung zu den wasserführenden
Rohren 16 vergrößert, wodurch eine lange Lebensdauer der
Verbindung auch in diesem Bereich gewährleistet ist.In the first layer of the
Alternativ zu der in Figur 1 dargestellten umlaufenden
Ausbildung der Kragen 26, ist es auch möglich, die Kragen 26
nur auf der den Verbrennungsgasen direkt zugewandten Seite
auszubilden.As an alternative to the rotating one shown in FIG
Training the
Der Randsegmentbereich der ersten Lage des Wärmeübertragers
14, der den heißen Verbrennungsgasen direkt ausgesetzt ist,
wird zusätzlich durch eine Laserschweißung mit dem
wasserführenden Rohr 16 verbunden. Damit wird
sichergestellt, daß auch im sogenannten "Trockengeh-Fall",
d. h. im Rohr 16 befindet sich zeitweise kein Wasser, eine
gut wärmeableitende Verbindung erhalten bleibt, die eine
lokale Überhitzung des Wärmeübertragers 14 verhindert.The edge segment area of the first layer of the
Eine weitere Ausführungsform zur Realisierung eines
federnden Preßsitzes der Rohre 16 in den Durchgangsöffnungen
zeigt Figur 4. Hierbei weist der Kragen 26 eine zur Achse
der Durchgangsöffnung hin geneigten Verlauf 41 auf, so daß
eine sich konisch verengende Durchgangsöffnung entsteht.
Dadurch wird der federnde Preßsitz zwischen den Rohren 16
und den Lamellenblechen verbessert. Eine zusätzliche dem
Kragen 26 vorgelagerte Anbiegung 43 gewährleiste, daß durch
den Anpreßvorgang keine undefinierte Verwerfung im Bereich
der Durchgangsöffnung entsteht.Another embodiment for realizing a
resilient press fit of the
Damit die Lage der Lamellen 18 zueinander fixiert ist,
werden Abstandshalter 28 eingesetzt. Wie Figur 2 zeigt,
werden die Abstandshalter 28 dadurch erzeugt, daß in die
Lamellen 18 Öffnungen 30 eingebracht werden, derart, daß die
dabei erzeugten Ausstellungen 32 sich jeweils an der
benachbarten Lamelle 18 abstützen. Zur Steuerung bzw. zur
gezielten Umlenkung des Verbrennungsgasstromes sind die
Durchmesser dieser Abstandshalter 28 in den Randbereichen
des Wärmeübertragers 14 größer ausgebildet, als im Inneren
des Wärmeübertragers 14. Die Ausstellungen 32 tragen zu
einer Verwirbelung der Verbrennungsgase bei, wodurch der
Wirkungsgrad der Wärmeübertragung erhöht wird. Die in Figur
2 dargestellte überbogene Ausstellungen 32 unterstützen die
Strömungsumlenkung bzw. Verwirbellung.So that the position of the
Die Brennkammer 12 des gasbeheizten Wassererhitzers 14 ist
mit wasserführenden Kanälen 34 versehen, die hydraulisch mit
den wasserführenden Rohren 16 des Wärmeübertragers 14
verbunden sind.The
Claims (4)
- Heat exchanger for fuel-fired water heaters, with water-carrying tubes (16) and with a stack of lamellae (18) having circular passage orifices for receiving the tubes (16), which tubes (16) pass through the said stack, the lamellae (18) forming between them gaps for the throughflow of the combustion gases, and the passage orifices being provided, at least in the region of the inflow of the combustion gas, at least partially with collars (26) which surround the tubes (16) and are drawn out of the lamellae sheets and which are seated in a clamping manner on the tubes (16), the collars (26) being formed in the edge region of the passage orifice, characterized in that the edge region of the passage orifices of the lamellae (18) is provided with radial slots (22) which emanate from the centre of the passage orifice and are distributed on the circumference and which subdivide the edge region of the passage orifice into a plurality of edge segments (24), and in that the collar has a slope (41) which is inclined relative to the axis of the passage orifice and which implements a resilient press fit between the tubes (16) and the lamellae sheets.
- Heat exchanger according to Claim 1, characterized in that the slope (41) is preceded towards the lamella surface by a bend (43) inclined away from the lamella surface and towards the collar (26).
- Heat exchanger according to Claim 1, characterized in that the non-positive connection between the edge segments (24) and the water-carrying tubes (16) in the region of the inflow of the combustion gas is additionally secured by means of a material connection, in particular by laser welding.
- Heat exchanger according to Claim 1, characterized in that protuberances (32) are provided in the lamellae (18) and as spacers (28) define a gap clearance (b) between the lamellae (18).
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29818228U | 1998-10-13 | ||
DE29818228U DE29818228U1 (en) | 1998-10-13 | 1998-10-13 | Heat exchanger for fuel-heated water heaters |
DE19946604A DE19946604A1 (en) | 1998-10-13 | 1999-09-29 | Heat exchanger for fuel-heated water heaters |
DE19946604 | 1999-09-29 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0994321A2 EP0994321A2 (en) | 2000-04-19 |
EP0994321A3 EP0994321A3 (en) | 2000-12-20 |
EP0994321B1 true EP0994321B1 (en) | 2004-08-18 |
Family
ID=26055100
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19990120228 Expired - Lifetime EP0994321B1 (en) | 1998-10-13 | 1999-10-11 | Heat exchanger for fuel fired water heater |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0994321B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111108331A (en) * | 2018-09-19 | 2020-05-05 | 苏州明志科技股份有限公司 | Aluminum alloy heat exchanger and preparation method thereof |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101033927B (en) * | 2007-04-10 | 2010-12-08 | 宁波方太厨具有限公司 | Highly effective heat exchange sheet of water heater |
DE202011102456U1 (en) * | 2011-06-24 | 2011-09-28 | Reventa Kunststoffverarbeitung Gmbh & Co. Kg | finned tube |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
HU181538B (en) * | 1980-03-11 | 1983-10-28 | Energiagazdalkodasi Intezet | Turbulent heat exchanger |
GB2110811A (en) * | 1981-11-28 | 1983-06-22 | Salter & Co Ltd G | Finned tube heat exchanger members |
GB2146939A (en) * | 1983-09-26 | 1985-05-01 | Huetoetechnika Ipari Szoevetke | Device for fixing heat-exchanger plates to their carrying pipes |
DE29702918U1 (en) * | 1996-02-19 | 1997-04-03 | Joh. Vaillant Gmbh U. Co, 42859 Remscheid | Finned heat exchanger |
DE19626321A1 (en) * | 1996-07-01 | 1998-01-08 | Bosch Gmbh Robert | Gas-heated circulation water heater |
-
1999
- 1999-10-11 EP EP19990120228 patent/EP0994321B1/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111108331A (en) * | 2018-09-19 | 2020-05-05 | 苏州明志科技股份有限公司 | Aluminum alloy heat exchanger and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
EP0994321A2 (en) | 2000-04-19 |
EP0994321A3 (en) | 2000-12-20 |
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