EP0889292B1 - Wärmetauscher und Zentralheizungskessel mit so einem Wärmetauscher - Google Patents

Wärmetauscher und Zentralheizungskessel mit so einem Wärmetauscher Download PDF

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Publication number
EP0889292B1
EP0889292B1 EP98202218A EP98202218A EP0889292B1 EP 0889292 B1 EP0889292 B1 EP 0889292B1 EP 98202218 A EP98202218 A EP 98202218A EP 98202218 A EP98202218 A EP 98202218A EP 0889292 B1 EP0889292 B1 EP 0889292B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
flue gas
water
channel
walls
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98202218A
Other languages
English (en)
French (fr)
Other versions
EP0889292A1 (de
Inventor
Jan Bijsterbosch
Jan Busser
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.)
REMEHA FABRIEKEN BV
Original Assignee
REMEHA FABRIEKEN BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by REMEHA FABRIEKEN BV filed Critical REMEHA FABRIEKEN BV
Publication of EP0889292A1 publication Critical patent/EP0889292A1/de
Application granted granted Critical
Publication of EP0889292B1 publication Critical patent/EP0889292B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F24H1/24—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
    • F24H1/28—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 including one or more furnace or fire tubes
    • F24H1/287—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 including one or more furnace or fire tubes with the fire tubes arranged in line with the combustion chamber

Definitions

  • the invention relates to a heat exchanger intended for a central heating boiler, which heat exchanger is manufactured as a monocasting from substantially aluminum, the heat exchanger comprising a number of walls which bound on one side a water-carrying channel and on the other a burner space.
  • a central heating boiler comprising such heat exchanger is known from practice and is for instance marketed by applicant under the type indications W21c ECO and W28c ECO.
  • the principle of the W21c ECO is shown in a brochure of applicant dated February 1996.
  • the maximal output of the known boiler is 21 kW and 28 kW respectively.
  • a particular advantage of the known boiler is that it is particularly compact.
  • the built-in depth of the known boiler is for instance 350 mm.
  • Another advantage of the heat exchanger of the known boiler is that it is designed as a monoblock casting, as a result of which the manufacture thereof is relatively simple.
  • the output of a central heating boiler is inter alia determined by the size of the burner that is used.
  • the burner which is substantially of cylindrical design, is cantilevered at one end face thereof.
  • the length of the burner could be increased.
  • this leads to problems with regard to the one-sided suspension of the burner.
  • the built-in depth of the central heating boiler becomes too great.
  • the known boiler comprises a single flue gas draft.
  • this single flue gas draft the temperature of the flue gases must be reduced as far as possible, so that as much heat as possible is transferred from the flue gases to the water to be heated.
  • pins increasing the heat-transferring surface extend in the flue gas draft. To enable the larger amount of flue gas to be discharged, the section of the flue gas draft would have to be enlarged. This means that for a proper heat transfer to be maintained, the pins increasing the heat-transferring surface would have to be of a longer design.
  • the object of the invention is to provide a heat exchanger intended for a central heating boiler having a greater output than the known central heating boiler, the intended heat exchanger being particularly compact and hence suitable for a central heating boiler which, like the known boiler, has a slight built-in depth.
  • the heat exchanger according to the invention is manufactured as a monocasting from substantially aluminum, the heat exchanger comprising the features of claim 1.
  • the heat exchanger being manufactured as a monocasting, it can be manufactured in a relatively quick and efficient manner.
  • the presence of more than one flue gas draft enables discharging a greater amount of flue gas, while the section of the flue gas drafts can remain small, so that relative to the flow-through section, a relatively large heat-transferring surface is nevertheless obtained. Due to the greater amount of flue gas that can be discharged, a larger burner having a greater output can be used. Outputs up to about 30 kW per flue gas draft are possible in the heat exchanger according to the invention. Because the heat exchanger according to the invention now involves parallel flue gas drafts, preferably located side by side, the slight built-in depth of the known central heating boiler can be maintained.
  • a central heating boiler can be provided having a greater output than the known central heating boiler while the same degree of compactness is achieved, in particular with regard to the built-in depth.
  • the walls which bound the burner space and the flue gas drafts are water-cooled, an optimal heat-transfer to the water to be heated is obtained, while, moreover, the heat exchanger is cooled in an efficient manner, so that it nowhere becomes overheated.
  • the one-piece core renders the manufacture of the core and the positioning of the core in the mold relatively simple, so that the manufacture of the heat exchanger is relatively simple as well and, accordingly, can take place in an economically favorable manner.
  • each flue gas draft of the heat exchanger may comprise two opposite walls having pins extending substantially perpendicularly thereto, which pins enlarge the heat-transferring surface and extend into the relevant flue gas draft.
  • the invention also relates to a central heating boiler comprising a heat exchanger according to the invention. It is a matter of course that such central heating boiler has the advantages mentioned hereinabove in respect of the heat exchanger.
  • DE-A-34 27 957 discloses a central heating boiler comprising a heat exchanger, which heat exchanger seems to be designed as two castings which are manufactured separately and subsequently connected to each other.
  • the known heat exchanger comprises a single flue gas draft.
  • the problems of such a single flue gas draft are described above in relation to the W21c ECO and W28 c ECO devices.
  • the walls of the known heat exchanger bound on one side a water-carrying channel and on the other a burner space and the said single flue gas draft.
  • Fig. 1 shows an exemplary embodiment of the heat exchanger 1 according to the invention.
  • the heat exchanger 1 is manufactured as a monocasting substantially from aluminum.
  • the heat exchanger comprises a number of walls 2, 3, 4, which walls bound on one side a water-carrying channel 5 and on the other a burner space 6 and two parallel flue gas drafts 7, 8.
  • the flue gas drafts 7, 8 extend from the burner space 6.
  • the burner space 6 is intended for accommodating a burner.
  • the walls 2, 3, 4 bounding the burner space 6 and the flue gas drafts 7, 8 are water-cooled in that the water-carrying channel 5 extends therealong.
  • the water-carrying channel 5 is of such design that it is formed with a single, one-piece core 9, shown in Fig. 3.
  • Each flue gas draft 7, 8 comprises two opposite walls 2, 3 having pins 10 extending substantially perpendicularly thereto, which pins enlarge the heat-exchanging surface and extend into the relevant flue gas draft 7, 8.
  • the flow system of the water-carrying channel can be considered to be a series connection of a number of parallel channel parts.
  • the channel 5a Adjacent the rear of the heat exchanger 1, the channel 5a divides into two separate channel parts 5b, 5c. Such division is clearly shown in Fig. 2.
  • Located in channel 5b is a partition 11 which forces the hot water to flow forwards again to subsequently rise again and flow back towards the rear again. From the rear, the water then flows in a common channel part 5d which separates the two flue gas drafts 7, 8 from each other.
  • a partition 12 is located, which provides that the water first flows forwards and then upwards, to subsequently flow to the rear again, enabling the water to divide again from there and flow to two following separate subchannels 5b' and 5c'.
  • the heat exchanger may comprise three or more flue gas drafts, and instead of a cylindrical burner room 6, a burner space having a different shape may be used.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Air Supply (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Claims (8)

  1. Wärmetauscher für einen Zentralheizungskessel, wobei der Wärmetauscher (1) als einteiliges Gußteil aus im wesentlichen Aluminium hergestellt ist und eine Anzahl von Wänden (2, 3, 4,) aufweist, die auf der einen Seite einen wasserführenden Kanal (5) und auf der anderen Seite einen Brennerraum (6) begrenzen, dadurch gekennzeichnet, daß der Wärmetauscher wenigstens zwei parallele Abgaszüge (7, 8) aufweist, die sich vom Brennerraum (6) aus erstrecken, wobei der Brennerraum (6) zum Aufnehmen eines Brenners vorgesehen ist, und die Wände (2, 3, 4), welche den Brennerraum (6) und die Abgaszüge (7, 8) begrenzen, dadurch wassergekühlt sind, daß sich der wasserführende Kanal (5) entlang derselben erstreckt, und der wasserführende Kanal (5) aus einem einzelnen einteiligen Kern (9) gebildet ist.
  2. Wärmetauscher nach Anspruch 1, dadurch gekennzeichnet, daß jeder Abgaszug (7, 8) zwei gegenüberliegende Wände (2, 3) aufweist, die sich im wesentlichen senkrecht zu diesen erstreckende Stifte (10) aufweisen, welche die Wärmeaustauschoberfläche vergrößern und sich in den betreffenden Abgaszug (7, 8) erstrecken.
  3. Wärmetauscher nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Strömungssystem des wasserführenden Kanals (5) eine Reihenschaltung mehrerer paralleler Kanalteile ist.
  4. Wärmetauscher nach Anspruch 3, dadurch gekennzeichnet, daß der wasserführende Kanal (5) einen einzelnen Einlaßteil (5a) aufweist, der sich in zwei erste, separate Kanalteile (5b, 5c) teilt, wobei sich die ersten, separaten Kanalteile (5b, 5c) in einem ersten, gemeinsamen Kanalteil (5d) treffen, wobei sich der erste, gemeinsame Kanalteil (5d) in zwei nachfolgende zweite separate Kanalteile (5b', 5c') teilt, wobei sich die nachfolgenden zweiten separaten Kanalteile (5b', 5c') in einem nachfolgenden gemeinsamen Kanalteil (d') treffen, wobei sich das Muster des gemeinsamen Kanalteils (5d) und der daran anschließenden zwei separaten Kanalteile (5b, 5c) sich mehrmals wiederholt, wobei ein letzter gemeinsamer Kanalteil (5e) in einer Auslaßöffnung endet.
  5. Wärmetauscher nach Anspruch 4, dadurch gekennzeichnet, daß der Wärmetauscher (1) zwei parallele Abgaszüge (7, 8) aufweist, die voneinander durch zwei Wände (3) getrennt sind, welche ferner die gemeinsamen Kanalteile (5d, 5d') mit Ausnahme des letzten gemeinsamen Kanalteils begrenzen.
  6. Wärmetauscher nach einem de vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Brennerraum (6) und die Abgaszüge (7, 8) von wenigstens einer Seite (S) her zugängig sind.
  7. Wärmetauscher nach Anspruch 5 und 6, dadurch gekennzeichnet, daß der wasserführende Kanal (5), senkrecht zu einer auf der Höhe der Abgaszüge (7, 8) angeordneten horizontalen Querschnittsebene (II-II) gesehen, einen im wesentlichen m-förmigen Querschnitt hat.
  8. Zentralheizungskessel mit einem Wärmetauscher (1) nach einem der Ansprüche 1-7.
EP98202218A 1997-07-02 1998-07-01 Wärmetauscher und Zentralheizungskessel mit so einem Wärmetauscher Expired - Lifetime EP0889292B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1006456A NL1006456C2 (nl) 1997-07-02 1997-07-02 Warmtewisselaar en CV-ketel voorzien van een dergelijke warmtewisselaar.
NL1006456 1997-07-02

Publications (2)

Publication Number Publication Date
EP0889292A1 EP0889292A1 (de) 1999-01-07
EP0889292B1 true EP0889292B1 (de) 2001-12-19

Family

ID=19765263

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98202218A Expired - Lifetime EP0889292B1 (de) 1997-07-02 1998-07-01 Wärmetauscher und Zentralheizungskessel mit so einem Wärmetauscher

Country Status (4)

Country Link
EP (1) EP0889292B1 (de)
AT (1) ATE211246T1 (de)
DE (1) DE69803010T2 (de)
NL (1) NL1006456C2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102802835A (zh) * 2009-06-23 2012-11-28 贝卡尔特燃烧技术股份有限公司 具有被一体化在销柱中的气孔的芯盒

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10114705A1 (de) * 2001-03-23 2002-09-26 August Broetje Gmbh Verfahren zum Herstellen eines Wärmetauschers für einen Brennwertkessel durch Gießen sowie bei der Durchführung des Verfahrens anzuwendender Kern für eine Gießform
NL1029004C2 (nl) 2005-05-10 2006-11-13 Remeha B V Warmtewisselaarelement alsmede een verwarmingsstelsel voorzien van een dergelijk warmtewisselaarelement.
US20100000725A1 (en) * 2006-06-08 2010-01-07 Karel Hubau Heat exchanger and heating apparatus provided therewith
US7784434B2 (en) 2006-11-09 2010-08-31 Remeha B.V. Heat exchange element and heating system provided with such heat exchange element
EP2072931A3 (de) * 2007-12-21 2012-04-04 A.M. S.R.L. Wärmetauscher, insbesondere für die Konstruktion so genannter Brennwertheizkessel mit hohem Wirkungsgrad geeignet
WO2010037719A2 (en) * 2008-10-03 2010-04-08 Bekaert Combust. Technol. B.V. High efficiency heat exchanger element
NL2002567C2 (en) * 2009-02-26 2010-08-30 Hld Dejatech B V Heat exchanger and method for manufacturing such.
CN101922811A (zh) * 2010-07-28 2010-12-22 青岛理工大学 圆柱阵列容积换热器
EP3368490B1 (de) 2015-10-28 2019-12-18 Remeha B.V. Wärmetaucher und verfahren zu seiner herstellung
US11204190B2 (en) 2017-10-03 2021-12-21 Enviro Power, Inc. Evaporator with integrated heat recovery
MX2020003558A (es) 2017-10-03 2020-08-03 Enviro Power Inc Evaporador con recuperacion termica integrada.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3427957A1 (de) * 1984-07-28 1986-02-06 Hans Dr.h.c. 3559 Battenberg Vießmann Kondensatheizkessel
DE8601896U1 (de) * 1986-01-25 1986-04-03 Vießmann, Hans, Dr.h.c., 3559 Battenberg Kondensatheizkessel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CR-Remeha "W21c ECO boiler" prospect (02.1996) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102802835A (zh) * 2009-06-23 2012-11-28 贝卡尔特燃烧技术股份有限公司 具有被一体化在销柱中的气孔的芯盒

Also Published As

Publication number Publication date
DE69803010D1 (de) 2002-01-31
ATE211246T1 (de) 2002-01-15
EP0889292A1 (de) 1999-01-07
DE69803010T2 (de) 2002-07-18
NL1006456C2 (nl) 1999-01-05

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