EP2821713A2 - Procédé destiné à alimenter en eau d'alimentation une installation de chauffage et installation de chauffage - Google Patents

Procédé destiné à alimenter en eau d'alimentation une installation de chauffage et installation de chauffage Download PDF

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Publication number
EP2821713A2
EP2821713A2 EP14175340.0A EP14175340A EP2821713A2 EP 2821713 A2 EP2821713 A2 EP 2821713A2 EP 14175340 A EP14175340 A EP 14175340A EP 2821713 A2 EP2821713 A2 EP 2821713A2
Authority
EP
European Patent Office
Prior art keywords
heating
water
pump
feed
pressure
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Withdrawn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
EP14175340.0A
Other languages
German (de)
English (en)
Other versions
EP2821713A3 (fr
Inventor
Rudie Steentjes
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 EP2821713A2 publication Critical patent/EP2821713A2/fr
Publication of EP2821713A3 publication Critical patent/EP2821713A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/1083—Filling valves or arrangements for filling

Definitions

  • the invention relates to a method for feeding feedwater into a heating system according to the preamble of patent claim 1 and a heating system with the features of claim 7.
  • Heating systems with a heating circuit in which heating water is performed as a heat transfer medium are used in particular for the distribution of heat in buildings.
  • One or more heat exchangers, usually radiators, are traversed by heating water and emit heat there.
  • a heat generator such as a water heater, which is formed in the simplest case as a water heater, but may also include a memory function.
  • the heat generator can be heated differently, for example, with electrical energy, with gas or oil, with solid fuels, by solar energy or a heat pump.
  • the heating circuit should have an overpressure of at least 0.3 to 0.5 bar at its highest point.
  • the desired system pressure of the heating system is adjusted by supplying feed water at a higher pressure until the system pressure in the heating system has been reached.
  • the feed pressure existing at drinking water connections of a domestic installation is already sufficient.
  • this feed pressure is lower than the desired system pressure, so that at the highest point of the heating circuit, the required minimum pressure can not be achieved.
  • the invention is based on the object to provide a method for feeding, which allows the feed of feed water with a low feed pressure with little effort.
  • the disadvantages known from the prior art should be eliminated.
  • a corresponding heating system to be provided.
  • a method for feeding feed water into a heating system with a feed pressure which is lower than a desired system pressure of the heating system, wherein the heating system for guiding the heating water has at least one heating circuit it is provided according to the invention that the heating water during feeding of the below the feed pressure is brought to the desired system pressure by means of a arranged in the heating circuit pump to the desired system pressure, wherein optionally a circulation in the heating circuit is prevented.
  • an already existing in the heating circuit pump is utilized to increase the system pressure in the heating circuit accordingly.
  • the feed water used for filling or refilling the heating system can therefore be supplied with a low feed pressure, which is in particular lower than the desired system pressure.
  • This system pressure is then built up by means of the existing pump in the heating circuit, which is integrated in particular in the heat generator.
  • the structure of the system pressure is particularly simplified if circulation in the heating circuit is prevented.
  • the circulation in the heating circuit is prevented by closing a shut-off valve, which is arranged in the heating circuit directly in front of a feed point (in the direction of a present under normal heating conditions Edelniklaufströmung upstream of a feed point) for the feed water.
  • the feed point is then arranged in particular on a suction side of the pump.
  • the shut-off valve is arranged in relation to one or more present in the heating circuit heat exchangers, that the largest part of the heating circuit by operating the pump of the water heater with the shut-off valve closed under Pressure is set. In other words, the feed point is then on a suction side of the pump. After opening the shut-off valve so that only a relatively small pressure drop occurs in the heating system.
  • feeding of feed water can be stopped and the circulation in the heating circuit may be released by opening the shut-off valve.
  • the pump then returns to its original function of conveying the heating water in the heating circuit or pumping it through the heat generator.
  • the heating system can therefore be operated as conventional.
  • an access (inlet) which is used for feeding feedwater, be separated from the heating circuit.
  • a corresponding fitting with which a further feed of feed water into the heating circuit and in particular a return from the heating circuit can be prevented in the feedwater inlet.
  • This fitting is designed in particular as a safety fitting to prevent backflow of the pressurized heating water, for example in a drinking water circuit, which is used for feeding the feedwater.
  • a system pressure on a pressure side of the pump that is measured in the flow direction behind the pump and evaluated.
  • an achieved system pressure can be detected relatively easily and, for example, an automatic switch-off of the supply of feed water can be carried out or a corresponding signal for a manual switch-off can be output.
  • a drop in system pressure can also be detected and possibly displayed, so that feed water can be re-injected. If necessary, this can also be done automatically.
  • the invention provides that it has a heating circuit, in which in particular at least one pump, a heat generator and optionally at least one heat exchanger is arranged. Furthermore, a feed point for feed water is formed in the heating circuit. On a suction side of the pump, in the direction of a heating circuit flow present under normal heating conditions upstream of a feed point, a shut-off valve for preventing circulation in the heating circuit may be arranged.
  • the shut-off valve is arranged in particular in the pumping direction (flow direction) behind a heat exchanger (eg space heater) or behind the last heat exchanger of the heating circuit, so that the largest part of the heating circuit can be brought to the system pressure with the pump. After completion of the feed and opening of the shut-off valve, then only a relatively small drop in system pressure occurs.
  • a heat exchanger eg space heater
  • a user interface may be provided, which allows manual operation.
  • an automatic control can be provided.
  • the water heater is designed as a combined device for heating of heating water and domestic hot water
  • the water heater for domestic hot water preparation has a secondary circuit which can be shut off via a valve.
  • a valve By means of this shut-off of the secondary circuit by means of the valve, it is also possible simply to use the method according to the invention and to increase the system pressure by means of the pump of the water heater, while the circulation in the heating circuit is prevented, even with a combination device.
  • heating systems can be filled with a combined device with feed water, which has a feed pressure which is less than the desired system pressure.
  • the feed point preferably has a safety fitting.
  • the safety valve then serves not only to control the access of feed water or release or close, but also prevents unwanted reflux of heating water from the heating circuit.
  • the safety fitting can be designed, for example, as a system separator or pipe separator.
  • feed water essentially means the same medium as the term heating water, wherein with heating water the Water is already filled in the heating system, while the feed water refers to the water that is introduced into the heating system.
  • the heating water or the feed water may optionally additives be added, for example, for rust protection of the heating system.
  • heating water is passed, which is in the heat generator 3, which is a water heater, heated and cooled in the heat exchanger 4, which is designed for example as a radiator for heating a living room by heat is given there, for example, to a room air.
  • the heat generator 3 For moving the heating water in the heating circuit 2, the heat generator 3, a pump 5.
  • a feed point 7 is formed in front of the pump 5 or in front of an input 6 of the heat generator 3 in the heating circuit 2.
  • a shut-off valve 8 On a side facing away from the pump side of the feed point 7 is located in the heating circuit 2, a shut-off valve 8, with which a circulation in the heating circuit 2 can be prevented.
  • the heat generator 3 has in the flow direction behind the pump 5, a pressure sensor 9 and a heat exchanger 10.
  • the heat exchanger 10 can be supplied with fossil fuels, for example, and thus heat the heating water of the heating circuit 2.
  • a certain minimum system pressure is required.
  • an overpressure of at least 0.3 to 0.5 bar should be present in order to prevent air from entering the heating system and worsening the efficiency.
  • feed water is introduced via the feed point 7 in the heating circuit 2 and thus becomes heating water. If now a feed pressure of the feedwater is less than the desired system pressure in the heating circuit 2, the shut-off valve 8 is closed.
  • the pump 5 continues to operate during the feed of the feedwater. As a result, an increased pressure is built up on a pressure side of the pump 5 between the pump 5 and the shut-off valve 8, this being continued, in particular, until the system pressure has been reached or slightly exceeded. Subsequently, the feeding is stopped and the feed point 7 is closed.
  • a corresponding fitting is arranged for this purpose, which is designed for example as a safety fitting and thus prevents backflow of the heating water.
  • an increase in pressure also takes place on a suction side of the pump, ie in the area between the shut-off valve 8 and the pump 5. This leads to a slight drop in the system pressure, which may already have been taken into account beforehand.
  • the heating system 1 can then be operated as usual with the desired system pressure.
  • FIG. 2 Now a further development is shown, in which the heat generator is designed as a combined device and thus serves for heating of heating water and domestic hot water.
  • the heat generator 3 in addition to the heat exchanger 10, a second heat exchanger 11, which is arranged in a secondary circuit of the heat generator 3. This is returned via a three-way valve 12 in the flow direction in front of the pump 5 in the main circuit.
  • the heating system 1 with feed water which is supplied with a low feed pressure of the feed point 7, which is less than the desired system pressure, the three-way valve 12 is switched such that the secondary circuit 11 is disabled and thus the second heat exchanger 11 is no longer traversed becomes.
  • the same method for feeding the feed water as in connection with FIG. 1 explained.
  • shut-off valve 8 After reaching the desired system pressure and closing the feed point 7, however, not only the shut-off valve 8 is opened, but also the three-way valve 12 is set as needed (release of the flow of heat exchanger 4 or heat exchanger 11).
  • the inventive method and the heating system according to the invention allow the refilling of the heating system, even if the feed water is supplied with a low feed water pressure.
  • Additional auxiliary elements, such as external pumps or the like are not required.
  • the pump is usually used in heating systems, for example, integrated in the water heater, already used to achieve the desired system pressure.
  • a control of the pump and the valves, in particular the shut-off valve can be done manually or via a controller, which optionally also has an operator interface.
  • the system pressure detected by means of a pressure sensor can also be taken into account.

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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)
EP14175340.0A 2013-07-05 2014-07-02 Procédé destiné à alimenter en eau d'alimentation une installation de chauffage et installation de chauffage Withdrawn EP2821713A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201310213237 DE102013213237A1 (de) 2013-07-05 2013-07-05 Verfahren zum Einspeisen von Speisewasser in eine Heizungsanlage und Heizungsanlage

Publications (2)

Publication Number Publication Date
EP2821713A2 true EP2821713A2 (fr) 2015-01-07
EP2821713A3 EP2821713A3 (fr) 2015-02-25

Family

ID=51224685

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14175340.0A Withdrawn EP2821713A3 (fr) 2013-07-05 2014-07-02 Procédé destiné à alimenter en eau d'alimentation une installation de chauffage et installation de chauffage

Country Status (2)

Country Link
EP (1) EP2821713A3 (fr)
DE (1) DE102013213237A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020084555A3 (fr) * 2018-10-25 2020-06-18 Bosch Termoteknik Isitma ve Klima Sanayi Ticaret Anonim Sirketi Dispositif de chauffage

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202015004141U1 (de) 2015-06-08 2016-06-13 Monika Müller Hauswassernetzgekoppelte Heizungswasser-Nachfüllvorrichtung mit örtlich spezifisch angeordneter Destilliereinheit sowie Heizungsanlage
DE102015007400A1 (de) 2015-06-08 2016-12-08 Monika Müller Hauswassernetzexterne Heizungswasser-Nachfüllvorrichtung sowie Heizungsanlage und Verfahren zum Nachfüllen von Heizungswasser
DE202015004142U1 (de) 2015-06-08 2016-06-13 Monika Müller Hauswassernetzexterne Heizungswasser-Nachfüllvorrichtung sowie Heizungsanlage

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1240259B (de) * 1962-02-01 1967-05-11 Balcke Ag Maschbau Druckhaltevorrichtung fuer Heisswasser-Heizungsanlagen
CH506756A (de) * 1970-03-02 1971-04-30 Taco Heizungen Ag Verfahren und Vorrichtung zum Nachspeisen von Wasser bei einer Zentral-Warmwasserheizung
FR2485152A1 (fr) * 1979-08-31 1981-12-24 Lemoine & Cie Robinet a commande programmee
WO2003071193A2 (fr) * 2002-02-22 2003-08-28 Karl Heinz Gast Systeme de chauffage, procede pour faire fonctionner un systeme de chauffage et utilisation d'un tel systeme
DE202004002279U1 (de) * 2004-02-16 2004-07-01 Barnova Gmbh Druckhaltevorrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020084555A3 (fr) * 2018-10-25 2020-06-18 Bosch Termoteknik Isitma ve Klima Sanayi Ticaret Anonim Sirketi Dispositif de chauffage

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Publication number Publication date
DE102013213237A1 (de) 2015-01-08
EP2821713A3 (fr) 2015-02-25

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