EP0268023A2 - Voiler for central heating - Google Patents

Voiler for central heating Download PDF

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Publication number
EP0268023A2
EP0268023A2 EP87111863A EP87111863A EP0268023A2 EP 0268023 A2 EP0268023 A2 EP 0268023A2 EP 87111863 A EP87111863 A EP 87111863A EP 87111863 A EP87111863 A EP 87111863A EP 0268023 A2 EP0268023 A2 EP 0268023A2
Authority
EP
European Patent Office
Prior art keywords
water
flow
heating
boiler
return
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Withdrawn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
EP87111863A
Other languages
German (de)
French (fr)
Other versions
EP0268023A3 (en
Inventor
Gero Frischmann
Ernst Wilhelm Stephan
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.)
Bosch Thermotechnik GmbH
Original Assignee
Buderus Heiztechnik 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 Buderus Heiztechnik GmbH filed Critical Buderus Heiztechnik GmbH
Publication of EP0268023A2 publication Critical patent/EP0268023A2/en
Publication of EP0268023A3 publication Critical patent/EP0268023A3/en
Withdrawn legal-status Critical Current

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    • 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
    • F24H1/30—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 being built up from sections
    • F24H1/32—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 being built up from sections with vertical sections arranged side by side
    • 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
    • F24H9/0036—Dispositions against condensation of combustion products

Definitions

  • the invention relates to a central heating boiler according to the preamble of claim 1.
  • a central heating boiler of this type can be found in DE-OS 31 02 703, etc. in the special version of a sectional boiler.
  • the heating gases flow through this, which leads to temperature compensation in the rear wall area of the boiler body and to the reduction of thermal stresses. In addition, there is a better use of energy.
  • the downstream water chamber is connected to the return line of the heating network.
  • the connection is in the upper area, so that the cool return water first flows through the entire downstream water space and then into the lower one Area of the boiler water chamber.
  • the preheating of the return water in the downstream water room prevents the dew point from falling below the actual boiler area, but not in the downstream water room itself.
  • the very complex mixing device should be dispensed with and the required, targeted increase in the return temperature should nevertheless be achieved.
  • the condensation in the downstream water space should also be largely avoided.
  • the central heating boiler has the features mentioned in the characterizing part of claim 1.
  • the lower return area of the secondary water chamber replaces the previous mixing device.
  • the heating return line protrude like an injector into a funnel-shaped extension leading to the boiler water chamber within the return area.
  • the return water draws in warm water from the surrounding mixing area and is thus preheated.
  • the heating boiler consists of the boiler body 1, only partially shown, with the combustion chamber 2 and heating gas flues, not shown.
  • a downstream water space 4 is assigned to the water space 3 at a distance, a vertical heating gas shaft 5 being formed between the two. In this heating gas shaft 5, the heating gases are cooled further before they flow to the exhaust pipe 6. At the same time, temperature compensation takes place between the front and rear walls of the water space 3.
  • the water spaces 3, 4 are connected to one another by connections 7, 8.
  • the heating flow 9 is connected at the top and the heating return 10 at the bottom to the downstream water space 4.
  • the downstream water space 4 is divided by a locking rib 11 into a flow area 12 and a return area 13.
  • a flow guide rib 14 which prevents a direct flow from the connection 7 to the heating flow 9. Hot flow water flows through the entire flow area 12.
  • a line 15 with a thermostatically controlled pump 16 leads from the flow area 12 to the return area 13. As soon as the return temperature drops below the dew point in the boiler, hot water is mixed into the return flow.
  • a separate mixing device can be dispensed with.

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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)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

Behind a central heating boiler (1) there is an ancillary water space (4), which is divided by a barrier rib (11) into an upper feed area (12), through which hot water flows, and a lower return area (13), through which cooler return water flows. When required, hot feed water is fed into the return area (13) by a controllable device (16). Drops below the condensation point are avoided. <IMAGE>

Description

Die Erfindung betrifft einen Zentralheizungskessel nach dem Oberbegriff des Patentanspruches 1.The invention relates to a central heating boiler according to the preamble of claim 1.

Ein Zentralheizungskessel dieser Art ist der DE-OS 31 02 703 zu entnehmen, u.zw. in der speziellen Version eines Glieder­heizkessels. Zwischen dem eigentlichen Kesselkörper, der mit seinem Wasserraum den Brennraum und die Heizgaszüge umgibt, und dem Nachschalt-Wasserraum ist ein vertikaler Heizgasschacht vorhanden. Dieser wird von den Heizgasen durchströmt, was zu einem Temperaturausgleich im Rück­wandbereich des Kesselkörpers und zum Abbau von Wärme­spannungen führt. Außerdem erfolgt eine bessere Energieaus­nutzung.A central heating boiler of this type can be found in DE-OS 31 02 703, etc. in the special version of a sectional boiler. There is a vertical heating gas shaft between the actual boiler body, which surrounds the combustion chamber and the heating gas flues with its water chamber, and the downstream water chamber. The heating gases flow through this, which leads to temperature compensation in the rear wall area of the boiler body and to the reduction of thermal stresses. In addition, there is a better use of energy.

Bei dem beschriebenen Heizungskessel ist der Nachschalt-­Wasserraum an die Rücklaufleitung des Heizungsnetzes angeschlossen. Der Anschluß liegt im oberen Bereich, so daß das kühle Rücklaufwasser zunächst den gesamten Nachschalt-Wasserraum durchströmt, um dann in den unteren Bereich des Kesselwasserraumes zu gelangen. Die Vorwärmung des Rücklaufwassers im Nachschalt-Wasserraum verhindert Taupunktsunterschreitungen im eigentlichen Kesselbereich jedoch nicht im Nachschaltwasserraum selbst.In the heating boiler described, the downstream water chamber is connected to the return line of the heating network. The connection is in the upper area, so that the cool return water first flows through the entire downstream water space and then into the lower one Area of the boiler water chamber. The preheating of the return water in the downstream water room prevents the dew point from falling below the actual boiler area, but not in the downstream water room itself.

Bei größeren Heizungskesseln gelten relativ strenge Betriebs­bedingungen. Taupunktsunterschreitungen müssen in allen Bereichen mit Sicherheit ausgeschlossen werden. Es ist deshalb der Einbau einer Kesselkreispumpe, eines Dreiwege­mischers mit Stellmotor und eines Reglers üblich. Sobald vorgeschriebene Rücklauftemperaturen unterschritten werden, wird dem Rücklauf heißes Vorlaufwasser beigemischt. Es handelt sich dabei nicht nur um ein unkontrolliertes Vorwärmen des Rücklaufwassers in einem Nachschalt-Wasserraum, sondern um ein gezieltes Anheben der Rücklauftemperatur mit heißem Vorlaufwasser.Larger heating boilers have relatively strict operating conditions. Falling below dew points must be excluded in all areas with certainty. It is therefore customary to install a boiler circuit pump, a three-way mixer with a servomotor and a controller. As soon as the return temperature falls below the prescribed level, hot flow water is added to the return. It is not just an uncontrolled preheating of the return water in a downstream water space, but a targeted raising of the return temperature with hot flow water.

Die sehr aufwendige Mischeinrichtung soll entfallen und trotzdem soll die geforderte, gezielte Anhebung der Rücklauftemperatur erreicht werden. Dabei soll auch die Kondensation im Nachschalt-Wasserraum weitgehend vermieden werden.The very complex mixing device should be dispensed with and the required, targeted increase in the return temperature should nevertheless be achieved. The condensation in the downstream water space should also be largely avoided.

Gemäß der Erfindung besitzt der Zentralheizungskessel die im Kennzeichen des Patentanspruches 1 genannten Merkmale.According to the invention, the central heating boiler has the features mentioned in the characterizing part of claim 1.

Wegen der Aufgliederung des Nachschalt-Wasserraumes mit einer Umkehrung der Strömungsrichtung wird jetzt heißes Vorlaufwasser durch den oberen, größeren Bereich des Nachschalt-Wasserraumes geleitet, wodurch eine unerwünschte Kondensatbildung weitgehend vermieden wird. Durch ein gezieltes Einspeisen von Wasser aus dem oberen Vorlaufbereich in den unteren Rücklaufbereich wird die geforderte Beimischung von Vorlaufwasser zum Rücklauf erreicht. Das Einspeisen selbst kann durch eine handelsübliche, thermostatisch gesteuerte Pumpe erfolgen. Auf die bisher notwendige Mischeinrichtung kann verzichtet werden.Because of the division of the downstream water space with a reversal of the flow direction, hot flow water is now conducted through the upper, larger area of the downstream water space, which largely prevents undesirable condensate formation. By specifically feeding water from the upper flow area into the lower return area the required admixture of flow water to the return is achieved. The feed itself can be done by a commercially available, thermostatically controlled pump. The previously required mixing device can be dispensed with.

Der untere Rücklaufbereich des Nachschalt-Wasserraumes ersetzt die bisherige Mischeinrichtung. Für eine gute Durchmischung empfiehlt es sich, daß der Heizungsrücklauf injektorartig in eine trichterförmige, zum Kesselwasserraum führende Erweiterung innerhalb des Rücklaufbereiches hineinragt. Das Rücklaufwasser saugt auf diese Weise warmes Wasser aus dem umgebenden Mischbereich an und wird dadurch vorgewärmt.The lower return area of the secondary water chamber replaces the previous mixing device. For thorough mixing, it is recommended that the heating return line protrude like an injector into a funnel-shaped extension leading to the boiler water chamber within the return area. The return water draws in warm water from the surrounding mixing area and is thus preheated.

Die beigefügte Zeichnung stellt ein Ausführungsbeispiel der Erfindung anhand eines Gliederheizkessels dar. Es zeigen

  • Fig. 1 Die Rückansicht des Kessels,
  • Fig. 2 Den Schnitt A-A aus Fig. 1 und
  • Fig. 3 Die vergrößerte Einzelheit x aus Fig. 2.
The accompanying drawing represents an embodiment of the invention using a sectional boiler
  • 1 the rear view of the boiler,
  • Fig. 2 shows the section AA of Fig. 1 and
  • 3 shows the enlarged detail x from FIG. 2.

Der Heizungskessel besteht aus dem nur teilweise darge­stellten Kesselkörper 1 mit dem Brennraum 2 und nicht dargestellten Heizgaszügen. Dem Wasserraum 3 ist ein Nachschalt-Wasserraum 4 im Abstand zugeordnet, wobei zwischen beiden ein vertikaler Heizgasschacht 5 gebildet ist. In diesem Heizgasschacht 5 werden die Heizgase weiter abgekühlt, bevor sie zum Abgasrohr 6 strömen. Gleichzeitig erfolgt ein Temperaturausgleich zwischen der Vorder- und Rückwand des Wasserraumes 3. Die Wasser­räume 3, 4 sind durch Anschlüsse 7, 8 miteinander verbunden. Der Heizungsvorlauf 9 ist oben und der Heizungsrücklauf 10 unten an den Nachschalt-Wasserraum 4 angeschlossen.The heating boiler consists of the boiler body 1, only partially shown, with the combustion chamber 2 and heating gas flues, not shown. A downstream water space 4 is assigned to the water space 3 at a distance, a vertical heating gas shaft 5 being formed between the two. In this heating gas shaft 5, the heating gases are cooled further before they flow to the exhaust pipe 6. At the same time, temperature compensation takes place between the front and rear walls of the water space 3. The water spaces 3, 4 are connected to one another by connections 7, 8. The heating flow 9 is connected at the top and the heating return 10 at the bottom to the downstream water space 4.

Der Nachschalt-Wasserraum 4 ist durch eine Sperrippe 11 in einen Vorlaufbereich 12 und einen Rücklaufbereich 13 unterteilt. Im Vorlaufbereich 12 sitzt eine Strömungsleit­rippe 14, welche eine Direktströmung vom Anschluß 7 zum Heizungsvorlauf 9 verhindert. Der gesamte Vorlaufbereich 12 wird von heißem Vorlaufwasser durchströmt.The downstream water space 4 is divided by a locking rib 11 into a flow area 12 and a return area 13. In the flow area 12 there is a flow guide rib 14 which prevents a direct flow from the connection 7 to the heating flow 9. Hot flow water flows through the entire flow area 12.

Vom Vorlaufbereich 12 führt eine Leitung 15 mit einer thermostatisch gesteuerten Pumpe 16 zum Rücklaufbereich 13. Sobald die Rücklauftemperatur ein Unterschreiten des Taupunktes im Kessel erwarten läßt, wird dem Rücklauf heißes Wasser beigemischt. Eine injektorartige Mündung 17 des Heizungsrücklaufs sorgt in Verbindung mit einer trichterförmigen Erweiterung 18 vor dem Anschluß 8 für ein Mitsaugen von heißem Wasser aus dem Rücklaufbereich 13. Auf eine separate Mischeinrichtung kann verzichtet werden.A line 15 with a thermostatically controlled pump 16 leads from the flow area 12 to the return area 13. As soon as the return temperature drops below the dew point in the boiler, hot water is mixed into the return flow. An injector-like mouth 17 of the heating return, in conjunction with a funnel-shaped extension 18 in front of the connection 8, ensures that hot water is also sucked in from the return area 13. A separate mixing device can be dispensed with.

Claims (3)

1. Zentralheizungskessel mit einem unter Ausbildung eines vertikalen Heizgasschachtes hinter dem Kesselwasser­raum angeordneten, an das Heizungsnetz angeschlossenen Nachschalt-Wasserraum,
dadurch gekennzeichnet, daß der Nachschalt-Wasserrraum (4) durch eine Sperrippe (11) in einen oberen, von heißem Vorlaufwasser durchströmten Vorlaufbereich (12) und einen unteren, von kühlerem Rücklaufwasser durchströmten Rück­laufbereich (13) unterteilt ist und daß eine regelbare Einrichtung (16) zum Einspeisen von Vorlaufwasser in den Rücklaufbereich (13) vorhanden ist.1. Central heating boiler with a secondary water chamber connected to the heating network and arranged behind the boiler water chamber, forming a vertical heating gas shaft,
characterized in that the downstream water space (4) is divided by a blocking rib (11) into an upper flow area (12) through which hot flow water flows and a lower flow area (13) through which cooler flow water flows, and in that a controllable device (16 ) for feeding flow water into the return area (13). 2. Zentralheizungskessel nach Anspruch 1,
dadurch gekennzeichnet, daß der Heizungsrücklauf (10) mit einer injektorartigen Mündung (17) in eine trichterförmige, zum Kesselwasserraum führende Erweiterung (18) hineinragt.2. Central heating boiler according to claim 1,
characterized in that the heating return (10) with an injector-like opening (17) projects into a funnel-shaped extension (18) leading to the boiler water space. 3. Zentralheizungskessel nach Anspruch 1,
dadurch gekennzeichnet, daß der Heizungsvorlauf (9) seitlich versetzt zu dem vom Kesselwasserraum (3) kommenden Anschluß (7) angeordnet und von diesem durch eine Strömungsleitrippe (14) getrennt ist.3. Central heating boiler according to claim 1,
characterized in that the heating flow (9) is laterally offset from the connection (7) coming from the boiler water space (3) and is separated from it by a flow guide rib (14).
EP87111863A 1986-11-20 1987-08-17 Voiler for central heating Withdrawn EP0268023A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863639673 DE3639673A1 (en) 1986-11-20 1986-11-20 CENTRAL HEATING BOILER
DE3639673 1986-11-20

Publications (2)

Publication Number Publication Date
EP0268023A2 true EP0268023A2 (en) 1988-05-25
EP0268023A3 EP0268023A3 (en) 1989-10-18

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ID=6314377

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87111863A Withdrawn EP0268023A3 (en) 1986-11-20 1987-08-17 Voiler for central heating

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EP (1) EP0268023A3 (en)
DE (1) DE3639673A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3832323A1 (en) * 1988-09-23 1990-03-29 Omnical Gmbh Water-side connection of a central-heating boiler
FR2706593A1 (en) * 1993-06-09 1994-12-23 Dietrich Thermique End interface module for boiler heater.
EP0864822A3 (en) * 1997-03-11 2000-05-03 Babcock-Omnical-Industriekessel GmbH Method and device for operating a boiler with a large water volume
FR2869402A1 (en) * 2004-04-23 2005-10-28 Dietrich Thermique Sa De DUAL COMPARTMENT HEAT EXCHANGER HEAT EXCHANGER ELEMENT, HEATING BODY AND BOILER COMPRISING SAME
WO2017190716A3 (en) * 2016-05-06 2017-12-14 Blaze Harmony S.R.O. Hot-water heater with integrated automatic mixing of water for low-temperature corrosion protection
PL127770U1 (en) * 2016-05-06 2019-04-23 Blaze Harmony S R O Warm water heating device with integrated automatic mixing of water for protection against low-temperature corrosion

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT399773B (en) * 1988-10-13 1995-07-25 Vaillant Gmbh LINKED BOILER
DE9013666U1 (en) * 1990-09-29 1992-01-30 August Brötje GmbH & Co, 2902 Rastede Boiler with secondary heating surface
DE4430726A1 (en) * 1994-08-30 1996-03-07 Babcock Omnical Gmbh Boiler for the use of condensing boiler and a method for operating this boiler

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE640751C (en) * 1935-02-24 1937-01-12 Herbert G Hoeborn Hot water supply system with indirect heating of the service water
DE3030565A1 (en) * 1980-08-13 1982-03-11 Körting Hannover AG, 3000 Hannover Boiler for domestic heating systems - has burner connected to and regulated by room temp. control using three=way valve
DE3102703A1 (en) * 1981-01-28 1982-09-02 Buderus Ag, 6330 Wetzlar LINKED BOILER

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE640751C (en) * 1935-02-24 1937-01-12 Herbert G Hoeborn Hot water supply system with indirect heating of the service water
DE3030565A1 (en) * 1980-08-13 1982-03-11 Körting Hannover AG, 3000 Hannover Boiler for domestic heating systems - has burner connected to and regulated by room temp. control using three=way valve
DE3102703A1 (en) * 1981-01-28 1982-09-02 Buderus Ag, 6330 Wetzlar LINKED BOILER

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3832323A1 (en) * 1988-09-23 1990-03-29 Omnical Gmbh Water-side connection of a central-heating boiler
FR2706593A1 (en) * 1993-06-09 1994-12-23 Dietrich Thermique End interface module for boiler heater.
EP0864822A3 (en) * 1997-03-11 2000-05-03 Babcock-Omnical-Industriekessel GmbH Method and device for operating a boiler with a large water volume
FR2869402A1 (en) * 2004-04-23 2005-10-28 Dietrich Thermique Sa De DUAL COMPARTMENT HEAT EXCHANGER HEAT EXCHANGER ELEMENT, HEATING BODY AND BOILER COMPRISING SAME
WO2005111515A1 (en) * 2004-04-23 2005-11-24 De Dietrich Thermique Double-compartment heat exchanging terminal element, heating unit and boiler including same
WO2017190716A3 (en) * 2016-05-06 2017-12-14 Blaze Harmony S.R.O. Hot-water heater with integrated automatic mixing of water for low-temperature corrosion protection
PL127770U1 (en) * 2016-05-06 2019-04-23 Blaze Harmony S R O Warm water heating device with integrated automatic mixing of water for protection against low-temperature corrosion
PL71155Y1 (en) * 2016-05-06 2019-12-31 Blaze Harmony S R O Warm water heating device with integrated automatic mixing of water for protection against low-temperature corrosion

Also Published As

Publication number Publication date
DE3639673A1 (en) 1988-05-26
EP0268023A3 (en) 1989-10-18

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