EP2778546A1 - Système de chauffage et kit de rééquipement permettant d'améliorer la restitution de chaleur de consommateurs sous-alimentés hydrauliquement - Google Patents

Système de chauffage et kit de rééquipement permettant d'améliorer la restitution de chaleur de consommateurs sous-alimentés hydrauliquement Download PDF

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Publication number
EP2778546A1
EP2778546A1 EP14000447.4A EP14000447A EP2778546A1 EP 2778546 A1 EP2778546 A1 EP 2778546A1 EP 14000447 A EP14000447 A EP 14000447A EP 2778546 A1 EP2778546 A1 EP 2778546A1
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EP
European Patent Office
Prior art keywords
pump
heating
heating system
consumers
consumer
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Withdrawn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
EP14000447.4A
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German (de)
English (en)
Inventor
Susanne Kreft
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.)
Wilo SE
Original Assignee
Wilo SE
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 Wilo SE filed Critical Wilo SE
Publication of EP2778546A1 publication Critical patent/EP2778546A1/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Withdrawn legal-status Critical Current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
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
    • 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
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/02—Fluid distribution means
    • F24D2220/0207—Pumps

Definitions

  • the invention relates to a heating system with a central heating source and at least one central circulating pump, which conveys a heating medium from the heating source via a central flow line to a plurality of consumers, each having a local flow branch and a local return branch, wherein the heating medium from the consumers via a central return line flows back to the heating source, and wherein each consumer has a heating valve disposed in its respective flow branch.
  • Heating systems of the type mentioned are typically installed in single and multi-family homes, often in homes.
  • the consumers are realized by radiators or heating surfaces, which deliver the heat of the heating medium to a room.
  • the heat source is located at a central point in the apartment or house, usually in a basement room, so that the flow line and return line must be routed to each of the consumers in each room.
  • the consumers are connected in parallel between the flow and return line or between a outgoing from the central flow line secondary flow line and a leading to the central return line secondary return line, but also series circuits such consumers are known.
  • regulating valves can be arranged in the flow branch, return branch and / or in the secondary flow lines or secondary return lines, which are then adjusted so that the consumers close to the heating source do not receive too much heating energy. If a hydraulic compensation is carried out, it is ensured that the consumers arranged close to the heating source are not over-supplied and the consumers far away are not undersupplied.
  • a stationary, quasi-static hydraulic balancing is achieved when all parallel systems, for example, all heaters on a string or apartments in a building, each have the same hydraulic resistance. Practically, however, this is only possible for a single operating point of the heating system, ie at a certain default of all thermostatic control valves, ie at a certain flow rate and constant conditions. For example, the pump delivery rate, ie the pumping capacity of the central circulation pump must not fluctuate, or individual radiators must not be closed. Because in this case, the operating point of the heating system changes and it would be no longer hydraulically balanced. Therefore, the stationary hydraulic balancing takes place for a particularly critical state, namely the maximum heating load, at all Consumers are flowed through unhindered, ie their thermostatic control valves are all fully open.
  • a lack of hydraulic balancing is therefore recognizable by the fact that at least one consumer, possibly even two or more remote consumers, do not get warm, while other parts of the system, in particular consumers close to the heat source, are over-supplied. This is also known as "hydraulic short circuit".
  • the oversupply of consumers is not necessarily unpleasant, because the goal of heating the room air is achieved by these consumers in any case.
  • the rooms heated by the hydraulically underserved consumers remain cold. To avoid this, usually the performance of the central heating water circulating pump and / or the flow temperature of the heating system is increased. However, this in turn requires other disadvantages.
  • An excessive flow temperature setting of the heat source in conjunction with a high flow rate through the consumer also causes a poor control performance of the heating system and associated poor thermal comfort.
  • a heating system with a central heating source (heat source) and at least one central circulating pump for conveying a heating medium from the heating source via a central flow line to a plurality of consumers proposed, each having a local flow branch and a local return branch, wherein the heating medium via a central return line from the consumers can flow back to the heating source, and each consumer has a arranged in its respective flow branch heating valve, and wherein one of the consumers, which is hydraulically undersupplied, instead of the heating valve or in addition to this arranged in its flow branch or return branch decentralized pump having.
  • a retrofit kit for the retrofitting of a hydraulically undersupplied consumer in a heating system comprising a room temperature controller, an electrical assembly with a pump control electronics and a power supply, a decentralized pump, which is provided for mounting in a local flow or return branch of the consumer and a connection cable for connecting the decentralized pump to the module.
  • the core idea of the invention is to install an additional decentralized pump in the flow or return of an underserved consumer.
  • the rest of the heating system must not be changed, so that the invention is particularly suitable for retrofitting.
  • subsequently no balancing valves must be mounted in the pipelines or the existing heating valves must be replaced by presettable thermostats.
  • the decentralized pump can provide a local (decentralized) supply of hydraulic Energy can be achieved by an improvement in the flow through the flow under-powered consumer.
  • the underserved load is the one which is located furthest away from the heat source with regard to the length of the supply line.
  • the underserved load is the one which is located furthest away from the heat source with regard to the length of the supply line.
  • two or more consumers of the heating system can be underserved or become.
  • a decentralized pump can be arranged instead of the heating valve of the corresponding consumer or in addition to this in its flow branch or return branch, or be.
  • Heating valves according to the invention are any actuators that can adjust the flow through the respective consumer.
  • the heating valves are thermostatic control valves.
  • Consumers according to the invention may be any devices that are directly or indirectly connected to the flow line and from the heating medium, i. the heat transfer medium, are flowed through, and give off the heat of the heating medium to the environment. In this sense, consumers can be radiators or heating surfaces, for example.
  • Heating medium may be, for example, water or glycol.
  • the decentralized pump can be used in addition to an existing heating valve at the underserved consumer, as well as in addition to this.
  • the decentralized pump can be used in both Flow branch and be arranged in the return branch of the consumer. If the decentralized pump additionally installed, but it is expedient to arrange them in the return branch, because the heating valve is usually mounted in the flow. So no rebuilding measure must be taken in this regard.
  • a thermostatic control valve ensures that at high heat gains in the room no unnecessary overheating takes place, in which it prevents the supply of warm heating water to the consumer.
  • the pump When using a remote pump in addition to the heater valve, it should always be open to prevent the pump from working against a closed valve.
  • the pump has a pressure sensor or differential pressure sensor, so that they can independently determine a closed heating valve and reduce their power or disable.
  • the pump speed control electronics may be either an electronic module attached to the pump or a pump control electronics installed near the pump.
  • the decentralized pump is connected to an externally arranged to this control electronics, by means of which the pump is controllable.
  • the decentralized pump itself can thus be made particularly compact, so that it is easy to assemble and the consumer is not particularly noticeable.
  • the control unit may preferably have a pump control electronics for controlling the decentralized pump and a power supply for the pump. This ensures that only a single cable is required to electrically power and control the distributed pump.
  • the speed of the decentralized pump can either be pre-set during installation so that the power of the pump is adapted to the additionally required flow capacity of the consumer. The pump can then always be operated with this setting. Alternatively, the speed of the decentralized pump may be adjusted as needed by means of a PWM signal (pulse width modulation) provided by the control electronics Additional heating to be regulated. In this embodiment, the decentralized pump may be an electronically commutated pump that can be operated at variable speed.
  • the decentralized pump is assigned a room operating unit to which a setting can be made by a user, and because of this setting transmits a specific desired value signal to the control electronics.
  • the setpoint signal is merely one of the values "on / off". This means that a user can switch on and off the decentralized pump on the operating device via a corresponding operating element. In this case, the decentralized pump does not have to be controllable in its speed. This variant is particularly useful in connection with a single speed setting of the pump, which is carried out when installing the pump.
  • each predefinable setpoint can correspond to a certain speed of the pump, which is set by the control electronics.
  • the room control unit has no integrated temperature control.
  • the room control unit may preferably be a room temperature controller.
  • the decentralized pump is then assigned a room temperature controller equipped with a temperature sensor for transmitting a setpoint signal to the control electronics.
  • the room temperature controller advantageously has an operating element for specifying a desired room temperature.
  • This setpoint specification can be compared with the currently measured room temperature and from this a setpoint signal for the pump can be determined. This setpoint signal can then be sent to the Control electronics are transmitted, which then adjusts a certain speed at the decentralized pump.
  • the room control unit may preferably be designed in the manner of a wall-hung device. This makes it possible to arrange the room temperature controller on the wall far from the decentralized pump.
  • connection between the room control unit, in particular the room temperature controller and the control electronics for transmitting the setpoint signal can be done by means of connecting cable or wirelessly.
  • the room control unit, in particular the room temperature controller a radio transmitter unit for transmitting the setpoint signal, which is receivable by a radio receiver unit in the control electronics or with respect to the retrofit kit from a radio receiver unit in the assembly and processed. This increases the flexibility of the arrangement of the room control unit, in particular the room temperature controller, since no cables must be laid.
  • the room control unit together with the control electronics and the decentralized pump form an autonomous, non-networked unit.
  • the decentralized pump is not controlled or controlled by a higher-level control unit of the heating system. Rather, said unit is completely self-sufficient in the heating system.
  • the room control unit as room temperature controller together with the control electronics and the decentralized pump form an autonomous, uncrosslinked room temperature control.
  • the pump control electronics, the power supply and preferably also the radio receiver unit form a compact assembly. This simplifies the assembly of these components in the field near the decentralized pump.
  • the pump control electronics, the power supply and / or the radio receiver unit can each be such in terms of their shape and size that they each in a surface box or in a flush box Find space, ie can be mounted in it.
  • these components can be arranged inconspicuously next to the consumer on the wall or in the wall.
  • the electrical or electronic components for operating the decentralized pump and for the purpose of temperature control in particular the pump control electronics, a power supply for powering the pump and a wireless actuator as a radio receiving unit that communicates with the room temperature controller, preassembled in a housing.
  • a use of a decentralized pump in a flow branch or return branch of a hydraulically undersupplied consumer in a heating system comprising a plurality of consumers, these consumers each having a heating valve and the decentralized pump in addition to or instead of the heating valve to the undersupplied Consumer is connected.
  • FIG. 1 shows a section of a heating system 1, which has a central heating source, not shown, and at least one central circulating pump, not shown, for conveying a heating medium.
  • the heating medium is conveyed by means of the circulation pump from the heat source via a central supply line 3 to a plurality of consumers 2, each having a local flow branch 3a and a local return branch 4a, wherein the heating medium via a central return line 4 from the consumers 2 back to the heat source can flow, and each one Consumer 2 has a arranged in its respective flow branch 3a heating valve 5, which are designed here as a thermostat control valves 5.
  • the in FIG. 1 shown consumer is a radiator, which is undersupplied in the heating system. This means that it does not get really warm during normal operation of the heating system.
  • the normal operation is to be understood here as such operation, in which no manipulative measures are taken, which try to prevent the undersupply of the radiator, in particular no increased flow temperature and / or no increased power is set in the circulation pump.
  • one of the consumers of the heating system namely the underserved radiator 2
  • the thermostatic control valve 5 is equipped with a decentralized pump 6, which is arranged in the return branch 4a of the radiator 2.
  • the thermostatic control valve 5 is installed in the flow branch 3a.
  • the decentralized pump 6 is connected via a cable 9 with an externally to the pump 6 arranged control electronics 7.
  • the control electronics 7 is connected via a power line 10 to the power supply of 230V of the house network.
  • the decentralized pump 6 is assigned a room temperature controller 8.
  • a user can specify a room temperature.
  • the room temperature controller contains a temperature sensor whose signal is compared with the desired setpoint temperature. Depending on the deviation of this setpoint temperature from the measured actual temperature, the room temperature controller generates a setpoint signal, which it transmits by means of its integrated radio transmission unit to a radio receiver unit 7c in the control electronics 7. This receives the setpoint signal and passes it on to pump control electronics. This generates a PWM signal as a function of the setpoint signal and forwards it via the cable 9 to the pump 6.
  • FIG. 2 shows an electrical assembly with a housing in which the individual electrical components of the control electronics 7 are arranged.
  • Control electronics 7 includes the aforementioned pump control electronics 7a, a power supply 7b and a radio receiver 7c.
  • the pump control electronics 7a takes over the speed control of the pump 6.
  • the power supply 7b is a switching power supply that provides a voltage of 24V to power the pump 6.
  • the radio receiver 7c is set up for communication with the radio transmission unit of the room temperature controller 8.
  • These components are designed in such a way that they can also each place in a flush box or wall box space and can be mounted in it.
  • the entire assembly can be installed near the pump 6. The installation of these components can be done either surface or flush.
  • the assembly 7 allows easy installation by the craftsman.
  • the assembly is also simplified when the electrical or electronic components 7a, 7b, 7c are pre-assembled in a compact housing, the surface can be installed.
  • the equipping or retrofitting of an undersupplied consumer 2 according to the invention by means of a small decentralized pump 6 has the advantage that the undersupply is avoided without there being an oversupply of unaffected parts of the installation. Furthermore, noises in thermostatic control valves 5 are avoided because it does not come to high differential pressures. Also, no high flow velocities in the Pipes 3, 4 necessary so that there is no flow noise in the pipes.

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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)
EP14000447.4A 2013-03-11 2014-02-07 Système de chauffage et kit de rééquipement permettant d'améliorer la restitution de chaleur de consommateurs sous-alimentés hydrauliquement Withdrawn EP2778546A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013004106.6A DE102013004106A1 (de) 2013-03-11 2013-03-11 Heizungssystem und Nachrüstkit zur Verbesserung der Wärmeabgabe von hydraulisch unterversorgten Verbrauchern

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016202316A1 (fr) 2015-06-15 2016-12-22 Dostal Jiri Appareil de diagnostic et de commande d'échangeur de chaleur
US12066195B2 (en) 2018-05-14 2024-08-20 Ceske Vysoke Uceni Technicke V Praze One-pipe hydronic heating control device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015117850A1 (de) 2015-03-30 2016-10-06 Viessmann Werke Gmbh & Co Kg Kühleinrichtung und Verfahren zum Betreiben einer Kühleinrichtung
EP3076111B1 (fr) 2015-03-30 2020-12-09 Viessmann Refrigeration Solutions GmbH Système fluidique et procédé de commande d'un système fluidique
PL3076110T3 (pl) 2015-03-30 2019-08-30 Viessmann Werke Gmbh & Co. Kg System płynowy i sposób sterowania systemem płynowym

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0111838A2 (fr) * 1982-12-18 1984-06-27 Oliver Laing Installation de chauffage des locaux avec plusieurs zones
DE4236694A1 (de) * 1992-10-30 1994-05-05 Berthold Dr Ing Romacker Temperaturregeleinrichtung für einen Einzelraum in einer Wohnung, einem Gebäude o.dgl.
DE9418227U1 (de) * 1994-11-12 1995-01-12 Bossert, Gerdi, 78052 Villingen-Schwenningen Notheizaggregat für Warmwasser-Heizungsanlagen
DE29719056U1 (de) * 1997-10-27 1998-02-12 Schellknecht, Uwe, 99867 Gotha Fernbediente Zirkulationsumwälzpumpe
EP0866279A2 (fr) * 1997-03-18 1998-09-23 WILO GmbH Pompe dans un cicuit d'eau chaude d'une installation de chauffage central
EP0892223A2 (fr) * 1997-07-14 1999-01-20 Electrowatt Technology Innovation AG Dispositif de commande et de régulation pour système de chauffage
EP1033540A2 (fr) * 1999-03-03 2000-09-06 WILO GmbH Vase de découplage
DE19912395A1 (de) * 1999-03-19 2000-09-28 Gerald Weis Steuereinrichtung für eine fernsteuerbare Zirkulationspumpe
FR2820811A1 (fr) * 2001-02-13 2002-08-16 Gaz De France Dispositif de circulation de fluide caloporteur, ensemble et installation de chauffage
EP1357336A2 (fr) * 2002-04-26 2003-10-29 Sun-Systems GmbH Installation pour distribuer de l'énergie de chaleur à différents niveaux de consommateurs
WO2008025453A1 (fr) * 2006-09-01 2008-03-06 Wilo Ag Procédé pour faire fonctionner un réseau de tuyauterie
EP2151578A1 (fr) * 2008-08-04 2010-02-10 Grundfos Management A/S Agrégat de pompe de recirculation
DE202008012095U1 (de) * 2008-09-12 2010-02-11 U.S.H.-Innovationen Gmbh Heizungsanlage mit Durchflußmengen-Meßgerät
EP2392867A2 (fr) * 2010-05-20 2011-12-07 Metrona Wärmemesser Union Gmbh Système d'information basé sur un système de chauffage avec des pompes d'alimentation locale, et procédé d'utilisation du système d'information

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0111838A2 (fr) * 1982-12-18 1984-06-27 Oliver Laing Installation de chauffage des locaux avec plusieurs zones
DE4236694A1 (de) * 1992-10-30 1994-05-05 Berthold Dr Ing Romacker Temperaturregeleinrichtung für einen Einzelraum in einer Wohnung, einem Gebäude o.dgl.
DE9418227U1 (de) * 1994-11-12 1995-01-12 Bossert, Gerdi, 78052 Villingen-Schwenningen Notheizaggregat für Warmwasser-Heizungsanlagen
EP0866279A2 (fr) * 1997-03-18 1998-09-23 WILO GmbH Pompe dans un cicuit d'eau chaude d'une installation de chauffage central
EP0892223A2 (fr) * 1997-07-14 1999-01-20 Electrowatt Technology Innovation AG Dispositif de commande et de régulation pour système de chauffage
DE29719056U1 (de) * 1997-10-27 1998-02-12 Schellknecht, Uwe, 99867 Gotha Fernbediente Zirkulationsumwälzpumpe
EP1033540A2 (fr) * 1999-03-03 2000-09-06 WILO GmbH Vase de découplage
DE19912395A1 (de) * 1999-03-19 2000-09-28 Gerald Weis Steuereinrichtung für eine fernsteuerbare Zirkulationspumpe
FR2820811A1 (fr) * 2001-02-13 2002-08-16 Gaz De France Dispositif de circulation de fluide caloporteur, ensemble et installation de chauffage
EP1357336A2 (fr) * 2002-04-26 2003-10-29 Sun-Systems GmbH Installation pour distribuer de l'énergie de chaleur à différents niveaux de consommateurs
WO2008025453A1 (fr) * 2006-09-01 2008-03-06 Wilo Ag Procédé pour faire fonctionner un réseau de tuyauterie
EP2151578A1 (fr) * 2008-08-04 2010-02-10 Grundfos Management A/S Agrégat de pompe de recirculation
DE202008012095U1 (de) * 2008-09-12 2010-02-11 U.S.H.-Innovationen Gmbh Heizungsanlage mit Durchflußmengen-Meßgerät
EP2392867A2 (fr) * 2010-05-20 2011-12-07 Metrona Wärmemesser Union Gmbh Système d'information basé sur un système de chauffage avec des pompes d'alimentation locale, et procédé d'utilisation du système d'information

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016202316A1 (fr) 2015-06-15 2016-12-22 Dostal Jiri Appareil de diagnostic et de commande d'échangeur de chaleur
US12066195B2 (en) 2018-05-14 2024-08-20 Ceske Vysoke Uceni Technicke V Praze One-pipe hydronic heating control device

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