EP1139030B1 - Heating installation with a heat generator, a heat exchanger for a heating circuit and a tap water heating circuit for a hot water accumulator - Google Patents

Heating installation with a heat generator, a heat exchanger for a heating circuit and a tap water heating circuit for a hot water accumulator Download PDF

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Publication number
EP1139030B1
EP1139030B1 EP20010107212 EP01107212A EP1139030B1 EP 1139030 B1 EP1139030 B1 EP 1139030B1 EP 20010107212 EP20010107212 EP 20010107212 EP 01107212 A EP01107212 A EP 01107212A EP 1139030 B1 EP1139030 B1 EP 1139030B1
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EP
European Patent Office
Prior art keywords
water
circuit
domestic water
charging
domestic
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Expired - Lifetime
Application number
EP20010107212
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German (de)
French (fr)
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EP1139030A3 (en
EP1139030A2 (en
Inventor
Ulrich Kroell
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Robert Bosch GmbH
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Robert Bosch GmbH
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply

Definitions

  • the invention relates to a heating system with a heat generator that supplies heat to a heat exchanger, the heat exchanger on the output side feeds a heating circuit with radiators and a Brauchwasserladenik for a water heater with hot water, taken in the lower part of the hot water tank cold water, a domestic water charge pump and the heat exchanger passed in the upper part of the hot water tank heated is fed back and wherein the hot water tank in a hot water circuit in the lower range cold water can be supplied and in the upper part via connected taps hot hot water can be removed.
  • Such heating systems are for example in the DE 36 24 261 A1 or the EP 0 936415 A2 shown.
  • the hot water outlet of the hot water circuit is connected in front of the taps via a circulation line and a backflow preventer with the input of the service water charging pump, which looped between the cold water outlet of the hot water tank for the dhw charging circuit and the heat exchanger is and that between the cold water outlet of the hot water tank for the domestic water charging circuit and the service water charging pump a charging Wassermengenbeskyr is looped, which is set to a predetermined charging water quantity.
  • the service water charging pump of the service water charging circuit is also used as a circulation pump for circulating the service water, thus avoiding a separate circulation pump without having to do without the function of circulating the service water.
  • the charging amount of water required for the stratified charge operation can be set independently of the circulation circuit when it is provided that the service water charging circuit between the service water charging pump and the Heat exchangers a Wassermengenbeskyr is looped, which is adjustable to a total amount of water, which is determined by the sum of the amount of charge water and circulation water quantity.
  • the heat exchanger is designed as a two-circuit heat exchanger, wherein the one heat exchanger associated with the heating circuit and the other heat exchanger the service water charging circuit, then during operation of the service water charging pump, a circulation water amount regardless of the charging water quantity be conveyed and fed via the circulation line back to the service water charging pump.
  • the heat generator is designed as GasMaptherme, since then the heat distribution in the heat exchanger can be optimally adapted to the requirements of the heating circuit and the service-wasserladenikes.
  • the Wassermengenbe dictionary are formed according to an advantageous embodiment as a fixed throttle and adjustable in the amount of water.
  • An unillustrated heat generator eg a gas boiler supplies a heat exchanger 3 on the input side with heat. If this heat exchanger 3 is designed as a two-circuit heat exchanger, then via the one heat exchanger heated by the flowing heating water for the heating circuit HK, while the second heat exchanger supplies the service water charging circuit SK with heat.
  • the hot water tank 10 is heated by the domestic water charging circuit SK.
  • cold water is removed via the cold water outlet wa in the lower region of the hot water tank 10 and limited by a charging water flow limiter 6 to a predefinable charging water pump.
  • a service water charge pump 1 which heats the charge amount of water through a further Wassermengenbegrenzer 2 and the heat exchanger 3 via the hot water inlet ww of the domestic water charging circuit SK, again the upper area of the hot water tank 10 supplies.
  • the actual DHW BW is separated from it.
  • the cold water KW is fed to the cold water inlet wa of the hot water storage tank 10 in the lower area.
  • the hot service water is supplied to the switched taps 5.
  • the non-return valve 4 decouples the circulation circuit ZK from the domestic water charging circuit SK.
  • the service water charge pump 1 conveys the charge and the circulation water quantity via the water flow limiter 2 to the heat exchanger 3, which is set to a maximum flow rate as the sum of the two water quantities.
  • the service water charging pump 1 is designed accordingly. In this way, service water charging circuit SK and circulation circuit ZK are coupled to one another such that the service water charging pump 1 also serves as a circulation pump for the circulation circuit ZK.

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  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)

Description

Stand der TechnikState of the art

Die Erfindung betrifft eine Heizungsanlage mit einem Wärmeerzeuger, der einen Wärmeübertrager mit Wärme versorgt, wobei der Wärmeübertrager ausgangsseitig einen Heizkreis mit Heizkörpern und einem Brauchwasserladekreis für einen Brauchwasserspeicher mit Warmwasser speist, wobei im unteren Bereich des Brauchwasserspeichers kaltes Wasser entnommen, über eine Brauchwasser-Ladepumpe und den Wärmeübertrager geleitet im oberen Bereich des Brauchwasserspeichers erwärmt wieder zugeführt wird und wobei dem Brauchwasserspeicher in einem Brauchwasserkreis im unteren Bereich Kaltwasser zuführbar und im oberen Bereich über angeschlossene Zapfstellen warmes Brauchwasser entnehmbar ist.The invention relates to a heating system with a heat generator that supplies heat to a heat exchanger, the heat exchanger on the output side feeds a heating circuit with radiators and a Brauchwasserladekreis for a water heater with hot water, taken in the lower part of the hot water tank cold water, a domestic water charge pump and the heat exchanger passed in the upper part of the hot water tank heated is fed back and wherein the hot water tank in a hot water circuit in the lower range cold water can be supplied and in the upper part via connected taps hot hot water can be removed.

Derartige Heizungsanlagen sind beispielsweise in der DE 36 24 261 A1 oder der EP 0 936415 A2 gezeigt.Such heating systems are for example in the DE 36 24 261 A1 or the EP 0 936415 A2 shown.

Bei derartigen Heizungsanlagen, die mit dem sogenannten Schichtladespeichersystem versehen sind, muss zur Erhöhung des Benutzungskomforts eine eigene Zirkulationspumpe vorgesehen werden, die das warme Wasser des Brauchwasserspeichers in einem Zirkulationskreis umwälzt. Dies bedingt einen Mehraufwand an zusätzlichen Bauteilen und einem erhöhten Energiebedarf.In such heating systems, which are provided with the so-called stratified charge storage system, a separate circulation pump must be provided to increase the ease of use, which circulates the warm water of the hot water tank in a circulation circuit. This requires an additional expenditure of additional components and an increased energy requirement.

Es ist Aufgabe der Erfindung, bei einer Heizungsanlage der eingangs erwähnten Art einen Zirkulationskreis zu schaffen, für den auf den Einsatz einer Zirkulationspumpe verzichtet werden kann.It is an object of the invention to provide in a heating system of the type mentioned a circulation circuit, can be dispensed with the use of a circulation pump.

Diese Aufgabe wird nach der Erfindung dadurch gelöst, dass der Warmwasser-Ausgang des Brauchwasserkreises vor den Zapfstellen über eine Zirkulationsleitung und einen Rückflussverhinderer mit dem Eingang der Brauchwasser-Ladepumpe verbunden ist, die zwischen dem Kaltwasser-Ausgang des Brauchwasserspeichers für den Brauchwasserladekreis und dem Wärmeübertrager eingeschleift ist und dass zwischen den Kaltwasser-Ausgang des Brauchwasserspeichers für den Brauchwasserladekreis und die Brauchwasser-Ladepumpe ein Lade-Wassermengenbegrenzer eingeschleift ist, der auf eine vorgebbare Lade-Wassermenge festgelegt ist.This object is achieved according to the invention in that the hot water outlet of the hot water circuit is connected in front of the taps via a circulation line and a backflow preventer with the input of the service water charging pump, which looped between the cold water outlet of the hot water tank for the dhw charging circuit and the heat exchanger is and that between the cold water outlet of the hot water tank for the domestic water charging circuit and the service water charging pump a charging Wassermengenbegrenzer is looped, which is set to a predetermined charging water quantity.

Mit diesem Zirkulationskreis wird die Brauchwasser-Ladepumpe des Brauch-wasserladekreises auch als Zirkulationspumpe für die Umwälzung des Brauchwassers verwendet und so eine getrennte Zirkulationspumpe vermieden, ohne auf die Funktion der Umwälzung des Brauchwassers verzichten zu müssen.With this circulation circuit, the service water charging pump of the service water charging circuit is also used as a circulation pump for circulating the service water, thus avoiding a separate circulation pump without having to do without the function of circulating the service water.

Da der Wassermengenbegrenzer und der Rückflussverhinderer auch in herkömmlichen Heizungsanlagen erforderlich sind, ist anstelle einer Zirkulationspumpe nur der zusätzliche Lade-Wassermengenbegrenzer erforderlichSince the Wassermengenbegrenzer and the backflow preventer are also required in conventional heating systems, instead of a circulation pump only the additional charging Wassermengenbegrenzer is required

Die für den Schichtladebetrieb erforderliche Lade-Wassermenge kann unabhängig von dem Zirkulations-Kreis eingestellt werden, wenn vorgesehen ist, dass in den Brauchwasserladekreis zwischen die Brauchwasser-Ladepumpe und den Wärmeübertrager ein Wassermengenbegrenzer eingeschleift ist, der auf eine Gesamt-Wassermenge einstellbar ist, die durch die Summe aus Lade-Wassermenge und Zirkulations-Wassermenge festgelegt ist.The charging amount of water required for the stratified charge operation can be set independently of the circulation circuit when it is provided that the service water charging circuit between the service water charging pump and the Heat exchangers a Wassermengenbegrenzer is looped, which is adjustable to a total amount of water, which is determined by the sum of the amount of charge water and circulation water quantity.

Ist nach einer weiteren Ausgestaltung vorgesehen, dass der Wärmeübertrager als Zweikreis-Wärmetauscher ausgebildet ist, wobei der eine Wärmetauscher dem Heizkreis und der andere Wärmetauscher dem Brauchwasserladekreis zugeordnet sind, dann kann beim Betrieb der Brauchwasser-Ladepumpe eine Zirkulations-Wassermenge unabhängig von der Lade-Wassermenge mitgefördert und über die Zirkulationsleitung wieder der Brauchwasser-Ladepumpe zugeführt werden.Is provided according to a further embodiment, that the heat exchanger is designed as a two-circuit heat exchanger, wherein the one heat exchanger associated with the heating circuit and the other heat exchanger the service water charging circuit, then during operation of the service water charging pump, a circulation water amount regardless of the charging water quantity be conveyed and fed via the circulation line back to the service water charging pump.

Von Vorteil ist eine Ausgestaltung, die dadurch gekennzeichnet ist, dass der Wärmeerzeuger als Gasheiztherme ausgebildet ist, da dann die Wärmeaufteilung im Wärmeübertrager optimal an die Anforderungen des Heizkreises und des Brauch-wasserladekreises angepasst werden kann.It is advantageous embodiment, which is characterized in that the heat generator is designed as Gasheiztherme, since then the heat distribution in the heat exchanger can be optimally adapted to the requirements of the heating circuit and the service-wasserladekreises.

Die Wassermengenbegrenzer sind nach einer vorteilhaften Ausgestaltung als Festdrosseln ausgebildet und in der Wassermenge einstellbar.The Wassermengenbegrenzer are formed according to an advantageous embodiment as a fixed throttle and adjustable in the amount of water.

Die Erfindung wird anhand eines hydraulischen Schaltschemas einer nach der Erfindung ausgelegten Heizungsanlage näher erläutert.The invention will be explained in more detail with reference to a hydraulic circuit diagram of a designed according to the invention heating system.

Ein nicht dargestellter Wärmeerzeuger, z.B. eine Gastherme versorgt einen Wärmeübertrager 3 eingangsseitig mit Wärme. Ist dieser Wärmeübertrager 3 als Zweikreis-Wärmetauscher ausgebildet, dann wird über den einen Wärmetauscher das durchströmende Heizungswasser für den Heizkreis HK aufgeheizt, während der zweite Wärmetauscher den Brauchwasserladekreis SK mit Wärme versorgt.An unillustrated heat generator, eg a gas boiler supplies a heat exchanger 3 on the input side with heat. If this heat exchanger 3 is designed as a two-circuit heat exchanger, then via the one heat exchanger heated by the flowing heating water for the heating circuit HK, while the second heat exchanger supplies the service water charging circuit SK with heat.

Der Brauchwasserspeicher 10 wird über den Brauchwasserladekreis SK aufgeheizt. Dabei wird kaltes Wasser über den Kaltwasser-Ausgang wa im unteren Bereich des Brauchwasserspeichers 10 entnommen und über einen Lade-Wassermengenbegrenzer 6 auf eine vorgebbare Lade-Wasserpumpe begrenzt. Für die Strömung dieser Lade-Wassermenge sorgt eine Brauchwasser-Ladepumpe 1, die die Lade-Wassermenge über einen weiteren Wassermengenbegrenzer 2 und den Wärmeübertrager 3 über den Warmwasser-Eingang ww des Brauchwasserladekreises SK erwärmt, wieder dem oberen Bereich dem Brauchwasserspeicher 10 zuführt.The hot water tank 10 is heated by the domestic water charging circuit SK. In this case, cold water is removed via the cold water outlet wa in the lower region of the hot water tank 10 and limited by a charging water flow limiter 6 to a predefinable charging water pump. For the flow of this charge amount of water provides a service water charge pump 1, which heats the charge amount of water through a further Wassermengenbegrenzer 2 and the heat exchanger 3 via the hot water inlet ww of the domestic water charging circuit SK, again the upper area of the hot water tank 10 supplies.

Der eigentliche Brauchwasserkreis BW ist davon getrennt. Das Kaltwasser KW wird dem Kaltwasser-Eingang wa des Brauchwasserspeichers 10 im unteren Bereich zugeführt. An einem weiteren Warmwasser-Ausgang ww im oberen Bereich des Brauchwasserspeichers 10 wird das warme Brauchwasser den angeschalteten Zapfstellen 5 zugeführt. Vor den Zapfstellen 5, vorzugsweise am Warmwasser-Ausgang ww, zweigt eine Zirkulationsleitung 7 ab, die über einen Rückflussverhinderer 4 auf den Eingang der Brauchwasser-Ladepumpe 1 führt. Der Rückflussverhinderer 4 entkoppelt den Zirkulationskreis ZK vom Brauchwasserladekreis SK. Die Brauchwasser-Ladepumpe 1 fördert die Lade- und die Zirkulations-Wassermenge über den Wassermengenbegrenzer 2 zum Wärmeübertrager 3, der auf eine maximale Durchflussmenge als Summe der beiden Wassermengen festgelegt ist. Die Brauchwasser-Ladepumpe 1 ist entsprechend ausgelegt. Auf diese Weise sind Brauchwasserladekreis SK und Zirkulationskreis ZK so miteinander gekoppelt, dass die Brauchwasser-Ladepumpe 1 auch als Zirkulationspumpe für den Zirkulationskreis ZK dient.The actual DHW BW is separated from it. The cold water KW is fed to the cold water inlet wa of the hot water storage tank 10 in the lower area. At a further hot water outlet ww in the upper region of the hot water tank 10, the hot service water is supplied to the switched taps 5. Before the taps 5, preferably at the hot water outlet ww, branches off a circulation line 7, which leads via a return valve 4 to the input of the service water charging pump 1. The non-return valve 4 decouples the circulation circuit ZK from the domestic water charging circuit SK. The service water charge pump 1 conveys the charge and the circulation water quantity via the water flow limiter 2 to the heat exchanger 3, which is set to a maximum flow rate as the sum of the two water quantities. The service water charging pump 1 is designed accordingly. In this way, service water charging circuit SK and circulation circuit ZK are coupled to one another such that the service water charging pump 1 also serves as a circulation pump for the circulation circuit ZK.

Claims (6)

  1. A heating system comprising a heat generator which supplies heat to a heat transfer system (3), wherein on the outlet side the heat transfer system (3) supplies hot water to a heating circuit (HK) comprising radiators and a domestic water charging circuit for a domestic water storage tank (10), wherein cold water is removed in the lower region of the domestic water storage tank (10), is fed via a domestic water charging pump (1) and the heat transfer system (3) in the upper region of the domestic water storage tank (10) after being heated again and wherein cold water (KW) is supplied to the domestic water storage tank (10) in a domestic water circuit (BW) in the lower region (wk) and hot domestic water can be removed in the upper region (ww) via connected tapping points (5), characterised in that the hot water outlet (ww) of the domestic water circuit (BW) is connected before the tapping points (5) via a circulation line (7) and a backflow preventer (4) to the inlet of the domestic water charging pump (1) which is inserted between the cold water outlet (wa) of the domestic water storage tank (10) for the domestic water charging circuit (SK) and the heat transfer system (3) and a charging water limiter (6) is inserted between the cold water outlet (wa) of the domestic water storage tank (10) for the domestic water charging circuit (SK) and the domestic water charging pump (1), which limiter is set to a predefinable amount of charging water.
  2. The heating system according to claim 1, characterised in that a water limiter (2) is inserted in the domestic water charging circuit (SK) between the domestic water charging pump (1) and the heat transfer system (3), which limiter is set to a total quantity of water which is determined by the sum of the quantity of charging water and the quantity of circulating water.
  3. The heating system according to claim 1 or 2, characterised in that the heat transfer system (3) is embodied as a two-circuit heat exchanger, wherein one heat exchanger is allocated to the heating circuit (HK) and the other heat exchanger is allocated to the domestic water charging circuit (SK).
  4. The heating system according to one of claims 1 to 3, characterised in that the heat generator is embodied as a gas-fired water heater.
  5. The heating system according to one of claims 1 to 4, characterised in that the water limiters (2, 6) are embodied as fixed restrictions.
  6. The heating system according to one of claims 1 to 5, characterised in that the water limiters (2, 6) are adjustable.
EP20010107212 2000-03-31 2001-03-23 Heating installation with a heat generator, a heat exchanger for a heating circuit and a tap water heating circuit for a hot water accumulator Expired - Lifetime EP1139030B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10016179 2000-03-31
DE2000116179 DE10016179C2 (en) 2000-03-31 2000-03-31 Heating system with a heat generator, a heat exchanger for a heating circuit and a hot water charging circuit of a hot water tank

Publications (3)

Publication Number Publication Date
EP1139030A2 EP1139030A2 (en) 2001-10-04
EP1139030A3 EP1139030A3 (en) 2003-01-08
EP1139030B1 true EP1139030B1 (en) 2007-07-25

Family

ID=7637204

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010107212 Expired - Lifetime EP1139030B1 (en) 2000-03-31 2001-03-23 Heating installation with a heat generator, a heat exchanger for a heating circuit and a tap water heating circuit for a hot water accumulator

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EP (1) EP1139030B1 (en)
DE (2) DE10016179C2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004012075B4 (en) * 2004-03-12 2006-03-09 Robert Bosch Gmbh Hot water supply system has hot water line integrated into circulation circuit by circulation line which is connected to hot water connection by connecting piece which incorporates injector

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2605994C2 (en) * 1976-02-14 1986-07-10 Helmut 7100 Heilbronn Bälz Water heating system
DE3619217A1 (en) * 1986-06-07 1987-12-10 Vortex Gmbh Dt DEVICE FOR CONTROLLING THE CIRCULATION IN A TEMPERATURE-PRESSURED MEDIUM CIRCUIT WITH TAKING POINTS
DE3624261C2 (en) * 1986-07-18 1995-02-09 Kloeckner Waermetechnik Hot water storage, in particular stratified storage
DE19806115A1 (en) * 1998-02-14 1999-08-19 Bosch Gmbh Robert Hot water supply system

Also Published As

Publication number Publication date
DE50112752D1 (en) 2007-09-06
DE10016179C2 (en) 2002-10-24
DE10016179A1 (en) 2001-10-11
EP1139030A3 (en) 2003-01-08
EP1139030A2 (en) 2001-10-04

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