EP0823599B1 - Gas-fired water heater - Google Patents

Gas-fired water heater Download PDF

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Publication number
EP0823599B1
EP0823599B1 EP97109718A EP97109718A EP0823599B1 EP 0823599 B1 EP0823599 B1 EP 0823599B1 EP 97109718 A EP97109718 A EP 97109718A EP 97109718 A EP97109718 A EP 97109718A EP 0823599 B1 EP0823599 B1 EP 0823599B1
Authority
EP
European Patent Office
Prior art keywords
wall
water
combustion chamber
water pipes
water heater
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
EP97109718A
Other languages
German (de)
French (fr)
Other versions
EP0823599A2 (en
EP0823599A3 (en
Inventor
Hans-Jochen Schwarz
Michael Dinkelacker
Thomas-Eckart Frieling
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0823599A2 publication Critical patent/EP0823599A2/en
Publication of EP0823599A3 publication Critical patent/EP0823599A3/en
Application granted granted Critical
Publication of EP0823599B1 publication Critical patent/EP0823599B1/en
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
    • F24H1/40—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
    • F24H9/00—Details
    • F24H9/14—Arrangements for connecting different sections, e.g. in water heaters 
    • 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
    • F24H9/14—Arrangements for connecting different sections, e.g. in water heaters 
    • F24H9/146—Connecting elements of a heat exchanger

Definitions

  • the invention is based on a gas-fired water heater according to the genus of the main claim.
  • a known Water heater of this type (EP A2 0 213 792) is the as Casting trained heat exchanger on the combustion chamber set up as an independent assembly in Sheet metal construction is executed.
  • the arrangement according to the invention with the features of The main claim has the advantage that the casting of the Heat exchanger and the combustion chamber in one operation a die casting tool largely automated in short Cycle time can be manufactured. Connection operations of the heat exchanger with the combustion chamber are also eliminated may be necessary for a sheet metal construction Support elements are not needed because of the casting solution is self-supporting.
  • a production-oriented execution results if that Casting of the heat exchanger at the inputs and outputs of the Water pipes each have a wall plate connecting the water pipes has to form water chambers with wall bridges and with means for fixing the water chambers tight final cover are provided.
  • a combustion chamber cooling effect is achieved if each side wall of the combustion chamber with wall bridges for formation a channel is provided which one of the chambers with a Connection for an external supply or discharge line connects.
  • the pipe passages and those forming the water chambers Recesses between the wall webs of the wall panels are by retractable, side slides of the die casting tool realized.
  • the covers closing the water chambers can be designed as simple cover plates and under Liner of seals on the wall panels or the Wall bars can be screwed on.
  • FIG. 1 shows a longitudinal section through a the fin block of a heat exchanger and one Casting chamber forming casting
  • Figure 2 shows a section through the casting along the line II-II Figure 1
  • Figure 3 a Side view of the casting in the direction of arrow A in Figure 1 seen
  • Figure 4 shows the other side view of the Cast part according to Figure 1.
  • a casting 10 has three in a heat transfer area 12 water pipes 14, 16, 18 arranged in parallel next to one another which are provided with integrally molded ribs 20.
  • the Water pipes 14, 16, 18 are at their entrances and exits connected in one piece by wall plates 22, 24, at those described in more detail below, for Water webs serving wall guides are provided.
  • the Wall panels 22, 24 are over the heat transfer area 12 extended down to where they have side walls 26, 28 form a combustion chamber 30.
  • the side walls 26, 28 are with a rear wall 32 and a front wall 34 of the combustion chamber 30 connected, which in turn until the Heat transfer area 12 pulled up and there to the Ribs 20 are formed.
  • Two wall webs 36, 38 are formed on the wall plate 22, which together with a cover plate, not shown the two water pipes 14, 16 connecting chamber 40, and delimit a further chamber 42 into which the water pipe 18 flows.
  • On the side wall 26 of the combustion chamber 30 are two Wall webs 44, 46 are formed, which are parallel at a distance are arranged to each other and delimit a channel 48. This connects the chamber 42 or the water pipe 18 with a connection 50 for a supply or discharge of the Pipes of heating water flowing through.
  • Threaded holes 52 for screws for fastening the Cover plate are at different locations on the wall plate 22 Threaded holes 52 for screws for fastening the Cover plate provided.
  • Two wall webs 54, 56 are formed on the wall plate 24, which together with a cover plate, not shown the chamber 58, connecting the two water pipes 16, 18 and delimit a further chamber 60 into which the water pipe 14 flows.
  • On the side wall 28 of the combustion chamber 30 are two Wall webs 62, 64 formed parallel to one another at a distance, which delimit a channel 66 which connects the chamber 60 with a Connects connection 68 for a supply or discharge.
  • the Wall plate 24 is also with threaded holes 70 for Screws for attaching the associated cover plate Mistake.
  • the pipe passages and those between the wall bars on the Wall plates 22, 24 and the side walls 26, 28 of the Combustion chamber 30 recesses are formed by retractable slider, which from the sides in the The working area of the die casting tool protrudes.
  • the sliders are easily according to the manufacturing requirements conical, so that the water pipes 14, 16, 18 from the end faces towards the middle slightly have increasing wall thickness.
  • the fins 20 of the water pipes are characterized by a corresponding structure of an upper and realized a lower die casting tool part.
  • the back wall 32 of the combustion chamber 30 and its front wall 34 protrude above a little beyond the ribs 20, where they hold a recording for form a flow protection.

Landscapes

  • 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)
  • Details Of Fluid Heaters (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Gas Burners (AREA)

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einem gasbeheizten Wassererhitzer nach der Gattung des Hauptanspruchs. Bei einem bekannten Wassererhitzer dieser Gattung (EP A2 0 213 792) ist der als Gußteil ausgebildete Wärmeübertrager auf die Brennkammer aufgesetzt, die als eigenständige Baugruppe in Blechkonstruktion ausgeführt ist.The invention is based on a gas-fired water heater according to the genus of the main claim. With a known Water heater of this type (EP A2 0 213 792) is the as Casting trained heat exchanger on the combustion chamber set up as an independent assembly in Sheet metal construction is executed.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäße Anordnung mit den Merkmalen des Hauptanspruchs hat den Vorteil, daß das Gußteil des Wärmeübertragers und die Brennkammer in einem Arbeitsgang in einem Druckgußwerkzeug weitgehend automatisiert in kurzer Taktzeit gefertigt werden können. Arbeitsgänge zum Verbinden des Wärmeübertragers mit der Brennkammer entfallen und auch bei einer Blechkonstruktion ggf. erforderlichen Stützelemente werden nicht benötigt, weil die Gußlösung selbsttragend ist. The arrangement according to the invention with the features of The main claim has the advantage that the casting of the Heat exchanger and the combustion chamber in one operation a die casting tool largely automated in short Cycle time can be manufactured. Connection operations of the heat exchanger with the combustion chamber are also eliminated may be necessary for a sheet metal construction Support elements are not needed because of the casting solution is self-supporting.

Durch die in den Unteransprüchen aufgeführten Merkmale sind vorteilhafte Ausgestaltungen der Anordnung nach dem Hauptanspruch möglich.By the features listed in the subclaims advantageous embodiments of the arrangement according to Main claim possible.

Eine fertigungsgerechte Ausführung ergibt sich, wenn das Gußteil des Wärmeübertragers an den Ein- und Ausgängen der Wasserrohre je eine die Wasserrohre verbindende Wandplatte hat, die zur Bildung von Wasserkammern mit Wandstegen und mit Mitteln zum Befestigen eines die Wasserkammern dicht abschließenden Deckels versehen sind.A production-oriented execution results if that Casting of the heat exchanger at the inputs and outputs of the Water pipes each have a wall plate connecting the water pipes has to form water chambers with wall bridges and with means for fixing the water chambers tight final cover are provided.

Ein die Brennkammer kühlender Effekt wird erreicht, wenn jede Seitenwand der Brennkammer mit Wandstegen zur Bildung eines Kanals versehen ist welcher eine der Kammern mit einem Anschluß für eine externe Zu- bzw. Ableitung verbindet.A combustion chamber cooling effect is achieved if each side wall of the combustion chamber with wall bridges for formation a channel is provided which one of the chambers with a Connection for an external supply or discharge line connects.

Die Rohrdurchgänge und die die Wasserkammern bildenden Ausnehmungen zwischen den Wandstegen der Wandplatten werden durch rückziehbare, seitliche Schieber des Druckgußwerkzeugs realisiert. Die die Wasserkammern abschließenden Deckel können als einfache Abdeckbleche ausgebildet und unter Zwischenlage von Dichtungen an die Wandplatten bzw. die Wandstege anschraubbar sein.The pipe passages and those forming the water chambers Recesses between the wall webs of the wall panels are by retractable, side slides of the die casting tool realized. The covers closing the water chambers can be designed as simple cover plates and under Liner of seals on the wall panels or the Wall bars can be screwed on.

Durch eine entsprechende Kanalstruktur an bzw. in der vorderen und hinteren Brennkammerwand kann auch eine gekühlte Ausführung der Brennkammer hergestellt bzw. der an den Seitenwänden der Brennkammer bewirkte Kühleffekt noch unterstützt werden.Through a corresponding channel structure on or in the front and rear combustion chamber wall can also be a Cooled version of the combustion chamber manufactured or the cooling effect still caused the side walls of the combustion chamber get supported.

Zeichnungdrawing

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 einen Längsschnitt durch ein den Lamellenblock eines Wärmeübertragers und eine Brennkammer bildendes Gußteil, Figur 2 einen Schnitt durch das Gußteil entlang der Linie II-II Figur 1, Figur 3 eine Seitenansicht des Gußteils in Richtung des Pfeiles A in Figur 1 gesehen und Figur 4 die andere Seitenansicht des Gußteils nach Figur 1.An embodiment of the invention is in the drawing shown and in the following description explained. 1 shows a longitudinal section through a the fin block of a heat exchanger and one Casting chamber forming casting, Figure 2 shows a section through the casting along the line II-II Figure 1, Figure 3 a Side view of the casting in the direction of arrow A in Figure 1 seen and Figure 4 shows the other side view of the Cast part according to Figure 1.

Beschreibung des AusführungsbeispielsDescription of the embodiment

Ein Gußteil 10 hat in einem Wärmeübertragungsbereich 12 drei parallel nebeneinander angeordnete Wasserrohre 14, 16, 18, die mit einstückig angeformten Rippen 20 versehen sind. Die Wasserrohre 14, 16, 18 sind an ihren Ein- bzw. Ausgängen durch Wandplatten 22, 24 miteinander einstückig verbunden, an denen nachstehend noch näher beschriebene, zur Wasserführung dienende Wandstege vorgesehen sind. Die Wandplatten 22, 24 sind über den Wärmeübertragungsbereich 12 hinaus nach unten verlängert, wo sie Seitenwände 26, 28 einer Brennkammer 30 bilden. Die Seitenwände 26, 28 sind mit einer Rückwand 32 und einer Vorderwand 34 der Brennkammer 30 verbunden, die ihrerseits bis in den Wärmeübertragungsbereich 12 hochgezogen und dort an die Rippen 20 angeformt sind.A casting 10 has three in a heat transfer area 12 water pipes 14, 16, 18 arranged in parallel next to one another which are provided with integrally molded ribs 20. The Water pipes 14, 16, 18 are at their entrances and exits connected in one piece by wall plates 22, 24, at those described in more detail below, for Water webs serving wall guides are provided. The Wall panels 22, 24 are over the heat transfer area 12 extended down to where they have side walls 26, 28 form a combustion chamber 30. The side walls 26, 28 are with a rear wall 32 and a front wall 34 of the combustion chamber 30 connected, which in turn until the Heat transfer area 12 pulled up and there to the Ribs 20 are formed.

An die Wandplatte 22 sind zwei Wandstege 36, 38 angeformt, die zusammen mit einer nicht dargestellten Deckelplatte eine die beiden Wasserrohre 14, 16 verbindende Kammer 40, sowie eine weitere Kammer 42 begrenzen, in die das Wasserrohr 18 mündet. An die Seitenwand 26 der Brennkammer 30 sind zwei Wandstege 44, 46 angeformt, die im Abstand parallel zueinander angeordnet sind und einen Kanal 48 begrenzen. Dieser verbindet die Kammer 42 bzw. das Wasserrohr 18 mit einem Anschluß 50 für eine Zu- oder Ableitung des die Wasserrohre durchströhmenden Heizungswassers. Two wall webs 36, 38 are formed on the wall plate 22, which together with a cover plate, not shown the two water pipes 14, 16 connecting chamber 40, and delimit a further chamber 42 into which the water pipe 18 flows. On the side wall 26 of the combustion chamber 30 are two Wall webs 44, 46 are formed, which are parallel at a distance are arranged to each other and delimit a channel 48. This connects the chamber 42 or the water pipe 18 with a connection 50 for a supply or discharge of the Pipes of heating water flowing through.

An verschiedenen Stellen der Wandplatte 22 sind Gewindelöcher 52 für Schrauben zum Befestigen der Deckelplatte vorgesehen.Are at different locations on the wall plate 22 Threaded holes 52 for screws for fastening the Cover plate provided.

An die Wandplatte 24 sind zwei Wandstege 54, 56 angeformt, die zusammen mit einer nicht dargestellten Deckelplatte eine die beiden Wasserrohr 16, 18 verbindende Kammer 58, sowie eine weitere Kammer 60 begrenzen, in die das Wasserrohr 14 mündet. An die Seitenwand 28 der Brennkammer 30 sind zwei Wandstege 62, 64 im Abstand parallel zueinander angeformt, die einen Kanal 66 begrenzen, der die Kammer 60 mit einem Anschluß 68 für eine Zu- oder Ableitung verbindet. Die Wandplatte 24 ist ebenfalls mit Gewindelöchern 70 für Schrauben zum Befestigen der zugehörigen Deckelplatte versehen.Two wall webs 54, 56 are formed on the wall plate 24, which together with a cover plate, not shown the chamber 58, connecting the two water pipes 16, 18 and delimit a further chamber 60 into which the water pipe 14 flows. On the side wall 28 of the combustion chamber 30 are two Wall webs 62, 64 formed parallel to one another at a distance, which delimit a channel 66 which connects the chamber 60 with a Connects connection 68 for a supply or discharge. The Wall plate 24 is also with threaded holes 70 for Screws for attaching the associated cover plate Mistake.

Die Rohrdurchgänge und die zwischen den Wandstegen an den Wandplatten 22, 24 und den Seitenwänden 26, 28 der Brennkammer 30 sich befindenden Ausnehmungen entstehen durch rückziehbare Schieber, die von den Seiten her in den Arbeitsraum des Druckgußwerkzeugs ragen. Die Schieber sind entsprechend den fertigungstechnischen Anforderungen leicht konisch ausgeführt, so daß die Wasserrohre 14, 16, 18 von den Stirnseiten zur Mitte hin eine sich geringfügig vergrößernde Wandstärke haben. Die Rippen 20 der Wasserrohre werden durch eine entsprechende Struktur eines oberen und eines unteren Druckgußwerkzeugteils realisiert. Die Rückwand 32 der Brennkammer 30 und deren Vorderwand 34 ragen oben über die Rippen 20 etwas hinaus, wo sie eine Aufnahme für eine Strömungssicherung bilden.The pipe passages and those between the wall bars on the Wall plates 22, 24 and the side walls 26, 28 of the Combustion chamber 30 recesses are formed by retractable slider, which from the sides in the The working area of the die casting tool protrudes. The sliders are easily according to the manufacturing requirements conical, so that the water pipes 14, 16, 18 from the end faces towards the middle slightly have increasing wall thickness. The fins 20 of the water pipes are characterized by a corresponding structure of an upper and realized a lower die casting tool part. The back wall 32 of the combustion chamber 30 and its front wall 34 protrude above a little beyond the ribs 20, where they hold a recording for form a flow protection.

Claims (3)

  1. Gas-fired water heater, having a combustion chamber (30) and a heat exchanger (12), which has water pipes (14, 16, 18) which are arranged next to one another and have fins formed integrally on the outer circumference, the water pipes being designed as a single-piece casting (10) with one another and with wall elements provided for guiding water at the inlets and outlets, characterized in that at least the rear wall (32) and the side walls (26, 28) of the combustion chamber (30) are also formed integrally, as a single piece, on the casting (10), which forms the water pipes (14, 16, 18), of the heat exchanger (12).
  2. Water heater according to Claim 1, characterized in that the wall elements, at the inlets and outlets of the water pipes (14, 16, 18), are designed as wall plates (22, 24) which connect the water pipes, and are provided, for the purpose of forming water chambers (40, 42 and 58, 60), are provided with wall webs (36, 38 and 54, 56) and with means (52 and 70) for attaching a cover which closes off the water chamber in a sealed manner.
  3. Water heater according to Claim 2, characterized in that each side wall (26, 28) of the combustion chamber (30) is provided with wall webs (44, 46 and 62, 64) for forming a channel (48 and 66), which connects one of the chambers (42 or 60) to a connection (50 or 68) for an external feed or discharge line.
EP97109718A 1996-07-29 1997-06-14 Gas-fired water heater Expired - Lifetime EP0823599B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19630509A DE19630509A1 (en) 1996-07-29 1996-07-29 Gas heated water heater
DE19630509 1996-07-29

Publications (3)

Publication Number Publication Date
EP0823599A2 EP0823599A2 (en) 1998-02-11
EP0823599A3 EP0823599A3 (en) 1999-03-10
EP0823599B1 true EP0823599B1 (en) 2001-11-14

Family

ID=7801139

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97109718A Expired - Lifetime EP0823599B1 (en) 1996-07-29 1997-06-14 Gas-fired water heater

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EP (1) EP0823599B1 (en)
DE (2) DE19630509A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1098148A3 (en) * 1999-11-08 2003-01-22 Joh. Vaillant GmbH u. Co. Heater
DE10200962A1 (en) 2002-01-12 2003-07-31 Eberspaecher J Gmbh & Co Heater and housing for a heater

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4421066A (en) * 1982-02-16 1983-12-20 Teledyne Industries, Inc. High efficiency boiler
US4501232A (en) * 1983-10-03 1985-02-26 Purex Pool Products, Inc. Pool or spa water heater
GB8519942D0 (en) 1985-08-08 1985-09-18 Baxi Partnership Ltd Heat exchangers

Also Published As

Publication number Publication date
EP0823599A2 (en) 1998-02-11
DE19630509A1 (en) 1998-02-05
DE59705352D1 (en) 2001-12-20
EP0823599A3 (en) 1999-03-10

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