EP2957837B1 - Installation de chauffage et procédé de fonctionnement d'une installation de chauffage - Google Patents

Installation de chauffage et procédé de fonctionnement d'une installation de chauffage Download PDF

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Publication number
EP2957837B1
EP2957837B1 EP15167325.8A EP15167325A EP2957837B1 EP 2957837 B1 EP2957837 B1 EP 2957837B1 EP 15167325 A EP15167325 A EP 15167325A EP 2957837 B1 EP2957837 B1 EP 2957837B1
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EP
European Patent Office
Prior art keywords
valve
pressure
water
pressure sensor
heat 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.)
Active
Application number
EP15167325.8A
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German (de)
English (en)
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EP2957837A1 (fr
Inventor
Mark Paske Te
Jan Elsen Ten
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Robert Bosch GmbH
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Robert Bosch GmbH
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Filing date
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Publication of EP2957837A1 publication Critical patent/EP2957837A1/fr
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Publication of EP2957837B1 publication Critical patent/EP2957837B1/fr
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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
    • F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply
    • 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
    • F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
    • F24D19/1024—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves a multiple way valve
    • 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
    • F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
    • F24D19/1036—Having differential pressure measurement facilities
    • 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
    • F24D19/1066—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
    • 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
    • F24D2220/0242—Multiple way valves
    • 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
    • F24D2220/04—Sensors
    • F24D2220/046—Pressure sensors
    • 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
    • F24D2220/08—Storage tanks

Definitions

  • the invention relates to a heating system comprising at least one heating circuit, a fluid circulating in the heating circuit, at least one heat generator, a first valve and a second valve.
  • the invention also relates to a method for operating the heating system.
  • Heating devices are used, which are used both for heating heating water and for drinking water. These are often referred to as combi heaters. A valve allows you to switch between the provision of service water and heating water.
  • a heating system having a combination heater also includes an expansion tank that ensures a constant pressure in the heating system. In order to be able to create a pressure balance to the expansion tank at any time, a bypass circuit between the flow and return of the heater is often necessary.
  • Such a bypass circuit has the disadvantage that the heating system loses heat output.
  • the heating system according to the invention comprises at least one heating circuit and a fluid circulating in it.
  • the heating system also includes at least one heat generator, a heat consumer, a water storage tank and/or a fresh water station, a first and a second valve and a pressure sensor, the pressure sensor being located between the first valve and the second valve.
  • the first valve and/or the pressure sensor are connected to a control unit.
  • the pressure sensor, the first valve and the second valve are located in a flow of the heat consumer;
  • the second valve is a thermostatic valve of the heat consumer, and the heat consumer emits heat to the environment;
  • the first valve is a three-way valve, which is located in the flow of the heat consumer, before the water tank and/or the fresh water station and the heat consumer, so that it is possible to switch between heating water and service water requirements as required.
  • the three-way valve opens in the direction of the heat consumer and closes in the direction of the water tank and/or the fresh water station when hot heating water is required, and the three-way valve opens in the direction of the water tank and/or the fresh water station and closes in the direction of the heat consumer when hot domestic water is required .
  • the pressure sensor detects pressure variations to which the heating system can react or be adjusted.
  • a fluid is a medium that can absorb and release heat. These can be, among other things, gaseous, liquid or solid substances.
  • the first and second valves located in the heating circuit have at least one closing and opening function. If a valve closes, the fluid cannot pass through it. If a valve is open, the fluid can flow through the valve pass through.
  • the valve can also be partially open or partially closed.
  • the pressure sensor determines an initial pressure and an instantaneous pressure.
  • An initial pressure is the pressure that is measured by the pressure sensor at a predeterminable initial time.
  • An instantaneous pressure is the pressure that is measured after this initial point in time at a later, specifiable point in time.
  • a pressure difference can be determined from the measurement results, which is defined as the magnitude of the difference between the instantaneous pressure and the initial pressure.
  • the first valve and/or the second valve can be closed or open when measuring the initial or instantaneous pressure.
  • the first valve opens when the pressure difference reaches or exceeds a predefinable maximum pressure difference.
  • the amount of the pressure difference is considered.
  • a maximum pressure difference is the amount of a pressure difference up to which safe operation of the heating system is guaranteed. If the maximum pressure difference is reached or exceeded, the first or second valve blocks.
  • a minimal pressure is to be understood analogously. If the maximum pressure difference is reached or exceeded, or if the minimum pressure is reached or fallen below, appropriate steps must be taken to equalize the pressure.
  • the instantaneous pressure can be compared with the minimum pressure that can be specified. If the instantaneous pressure falls below the specifiable minimum pressure, the valve opens. This ensures safe operation of the heating system under optimized conditions.
  • the first valve or the pressure sensor is connected to a control unit. Both components, the first valve and the pressure sensor, can also be connected to the control unit. This can be a direct or indirect connection.
  • the pressure sensor can send a signal to the control unit, which then processes this signal.
  • the pressure sensor sends the instantaneous pressure to the control unit.
  • the control unit can evaluate the signal and open the first valve when the pressure difference reaches or exceeds the predefinable maximum pressure difference. Analogously, the control unit can open the first valve when the instantaneous pressure reaches or falls below the predefinable minimum pressure.
  • Parameters and/or values are specified for operating the heating system.
  • control unit can control the first valve according to such predeterminable parameters and/or values when the pressure difference does not reach the predeterminable maximum pressure difference and/or the momentary pressure does not reach the predeterminable minimum pressure.
  • the pressure sensor and the first valve can form a unit. This can represent a cost-effective variant, which can also facilitate installation within the heating circuit.
  • the invention also relates to a method for operating a heating system according to claim 4.
  • the method is characterized in that the first valve is at least partially opened when the pressure difference determined by the pressure sensor reaches or exceeds a definable maximum pressure difference and/or when the instantaneous pressure reaches or falls below a definable minimum pressure.
  • the first valve is controlled and/or regulated according to specifiable parameters and/or values if the pressure difference does not reach the specifiable maximum pressure difference and/or the measured pressure does not reach the specifiable minimum pressure.
  • a warning message can be issued, in particular flashing and/or a sound and/or text. This offers the advantage that possible errors can be reacted to quickly and adequately.
  • the only figure shows an embodiment of a heating system according to the invention.
  • the figure shows an embodiment of a heating system 10 according to the invention.
  • the heating system 10 has a heating circuit 12 in which water circulates.
  • a pump 20 is located in the heating circuit 12 to circulate the water.
  • An expansion tank 28 absorbs the pressure differences caused by temperature differences in the circulating water and thus ensures a balanced pressure within the heating system.
  • a heat generator 16 which heats the water circulating in the heating circuit 12 .
  • a heat consumer 24 with a thermostatic valve 26, heat is released to the environment.
  • a water reservoir 18 or a fresh water station stores heated water, which can be used to heat service water depending on requirements.
  • a heat exchanger (not shown) is located in the water reservoir 18 for this purpose.
  • a three-way valve 30 is located in the flow of the heat generator 24 in front of the water tank 18 and the heat consumer 24, so that you can switch between heating water and hot water requirement as needed.
  • the three-way valve 30 opens in the direction of the water storage tank 18, whereas it is closed in the direction of the heat consumer 24.
  • the three-way valve 30 opens in the direction of the heat consumer 24 and in the direction of the water storage tank 18 it closes.
  • the thermostatic valve 26 closes or opens depending on the requirement: if a predefinable setpoint temperature is reached, it closes, otherwise it is partially or fully open.
  • a pressure sensor 36 is located between the three-way valve 30 and the thermostatic valve 26 of the heat consumer 24.
  • the pressure sensor 36 is connected to a control unit 38 so that communication is possible.
  • This connection can be a wired or wireless connection, for example.
  • the control unit 38 represents a separate unit. Alternatives are of course conceivable.
  • the control unit 38 can also be located in the heat generator 16 .
  • control unit 38 There are also connections from the control unit 38 to other components of the heating system 10, such as the pump 20 to which Water tank 18, to the heat consumer 24, to the three-way valve 30 and the thermostatic valve 26.
  • the pressure sensor 36 measures the pressure at regular time intervals, including the initial pressure, ie the pressure at a predeterminable initial time. It then measures the instantaneous pressure present at the three-way valve 30 at a later point in time that can be predetermined.
  • the first valve 30 and/or the second valve 26 can be closed or open, in particular partially open.
  • the pressure sensor 36 forwards the measured pressure values to the control unit 38, which evaluates them.
  • the control unit 38 calculates, among other things, the pressure difference, which is the amount of the difference between the initial pressure and the current pressure, a pressure gradient, the minimum pressure and/or the maximum pressure difference, unless these are specified.
  • the control and/or regulating unit 38 thus monitors changes in the pressure at a specific time interval via the pressure sensor 36 .
  • the control unit 38 generates corresponding commands or signals which are sent to the pressure sensor 36 and/or to the three-way valve 30 for execution.
  • the pressure sensor 36 can also be a direct connection between the pressure sensor 36 and the three-way valve 30 .
  • the pressure sensor 36 and the three-way valve 30 communicate directly with each other.
  • the pressure sensor 36 itself evaluates the measured pressure values and sends commands, for example in the form of signals, to the three-way valve 30.
  • the three-way valve 30 and the thermostatic valve 26 are closed at the same time, there may be water in the line between the three-way valve 30 and the thermostatic valve 26, which is referred to as trapped water. If the water is warm, it will cool down over time. The pressure of the trapped water drops. For safety reasons, the pressure of the trapped cold water must not fall below a minimum allowable pressure. Alternatively or at the same time, the pressure difference at the three-way valve 30 must not exceed a maximum permissible pressure difference exceed, otherwise the force of the pressure difference could exceed the force of the three-way valve 30, so that the three-way valve 30 is blocked.
  • the minimum pressure or the maximum pressure difference are parameters that can be specified or calculated and are dependent on the existing heating system.
  • the control unit 38 checks whether the currently measured pressure reaches or falls below a minimum pressure or whether the pressure difference reaches or exceeds a maximum pressure difference. Instantaneous pressure and pressure difference can also be taken into account at the same time.
  • the pressure sensor 36 checks whether the minimum pressure and/or the maximum pressure difference has been reached, provided that the pressure sensor 36 has the necessary means.
  • the control unit 38 or the pressure sensor 36 now determines that the minimum pressure is reached or fallen below or that the maximum pressure difference is reached or exceeded, the control unit 38 sends a signal to open the three-way valve 30. If between the pressure sensor 36 and there is a direct connection to the three-way valve 30, the pressure sensor 36 can also send the signal to open directly to the three-way valve 30. By opening the three-way valve 30, the pressure conditions are normalized. After the pressure sensor 36 detects a normalized pressure, the pressure sensor 36 sends a closing signal to the control unit 38 or alternatively to the three-way valve 30, so that the three-way valve 30 closes again in the direction of the heat consumer 24 or assumes the position required for heating control.
  • connection to the three-way valve 30 and the pressure sensor 36 exists or not is faulty. This can be done, for example, by the control unit 38 , for example by sending a request signal to the pressure sensor 36 at regular intervals and waiting for a response signal to be received from the pressure sensor 36 .
  • similar or other procedures for checking the connection can also be carried out by the pressure sensor 36 itself or by the heat generator 16 or by other components of the heating system 10 .
  • the corresponding component such as the control unit 38, issues a warning, for example a flashing and/or a single or repeated tone and/or a text message, which appears on a display.
  • the control unit 38 can send a corresponding warning signal to an external unit (not shown), which outputs the warning.
  • This external unit can be located in a living room, for example, so that the warning is immediately noticed by people present.
  • control unit 38 can initiate appropriate steps to ensure the safety of the heating system 10, such as opening the three-way valve 30 or, in particular if the pressure does not normalize, stopping the operation of the heating system 10.
  • the pressure sensor 36 can check whether there is a connection to the heat generator 16 and/or to the three-way valve 30 or whether it is faulty. If the pressure sensor 36 has the necessary means, it issues a warning, for example a flashing light and/or a tone, if it detects problems with the connection. If necessary, he initiates appropriate steps to ensure the safety of the heating system 10 . For example, he can cause the three-way valve 30 to open and, if the pressure does not normalize, send a warning signal to the control unit 38, which then stops the operation of the heating system 10, for example.
  • a warning for example a flashing light and/or a tone
  • the control unit 38 records the measured pressure values and calculated pressure differences. Furthermore, it saves the cases in which the minimal pressure and/or the maximum pressure difference has been reached. The data can be read out and/or retrieved from the control unit 38 for diagnostic and prognostic purposes as required.
  • the pressure sensor 36 can alternatively or simultaneously record and/or store the measured pressure values and calculated pressure differences, which can then be called up as required.
  • a pressure measurement is carried out at the pressure sensor 36 .
  • the three-way valve 30 is partially or fully opened in a step of the method, if it was previously closed. This achieves a normalization of the pressure without influencing the heating of the drinking water.
  • the opened three-way valve 30 is closed again, unless there is another requirement, for example a heating water requirement, so that the three-way valve 30 and the thermostatic valve 26 have to be opened.
  • the three-way valve 30 and the thermostatic valve 26 are regulated and controlled according to specifiable values or parameters, for example according to a specifiable setpoint temperature or an upcoming hot water tapping.
  • a request signal is sent to the pressure sensor 36 at regular intervals and a response signal is received from the pressure sensor 36 .
  • An error analysis is either carried out automatically at regular intervals or started externally.
  • a warning is issued, such as a blink, a tone, and/or text on a display.
  • the heating system 10 may need to be shut down to prevent damage from increasing pressure imbalance.

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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)
  • Water Supply & Treatment (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)

Claims (6)

  1. Système de chauffage, comprenant au moins un circuit de chauffage (12), un fluide circulant dans le circuit de chauffage (12), au moins un générateur de chaleur (16), un consommateur de chaleur (24), un accumulateur d'eau (18) et/ou une station d'eau douce, un capteur de pression (36), une première vanne (30) et une deuxième vanne (26) dans le circuit de chauffage (12),
    la première vanne (30) et/ou le capteur de pression (36) étant reliés à une unité de commande (38),
    le capteur de pression (36), la première vanne (30) et la deuxième vanne (26) étant situés dans une canalisation montante du consommateur de chaleur (24) ; la deuxième vanne (26) étant une vanne thermostatique du consommateur de chaleur (24), et le consommateur de chaleur (24) dégageant de la chaleur dans l'environnement ; la première vanne (30) étant une vanne à trois voies qui est située dans la canalisation montante du consommateur de chaleur (24), en amont de l'accumulateur d'eau (18) et/ou de la station d'eau douce et du consommateur de chaleur (24) de façon à pouvoir passer entre la demande en eau de chauffage et la demande en eau sanitaire selon les besoins ;
    la vanne à trois voies (30) s'ouvrant en direction du consommateur de chaleur (24) et se fermant en direction de l'accumulateur d'eau (18) et/ou de la station d'eau douce lorsque de l'eau de chauffage chaude est requise, et la vanne à trois voies (30) s'ouvrant en direction de l'accumulateur d'eau (18) et/ou de la station d'eau douce et se fermant en direction du consommateur de chaleur (24) lorsque de l'eau sanitaire chaude est requise,
    caractérisé en ce que le capteur de pression (36) est situé entre la première vanne (30) et la deuxième vanne (26) .
  2. Système de chauffage selon la revendication 1, caractérisé en ce que l'unité de commande (38) commande la première vanne (30) selon des paramètres et/ou des valeurs spécifiables si la différence de pression instantanée déterminée par le capteur de pression (36) n'atteint pas une différence de pression maximale spécifiable et/ou si la pression instantanée n'atteint pas une pression minimale spécifiable.
  3. Système de chauffage selon l'une des revendications précédentes, caractérisé en ce que le capteur de pression (36) et la première vanne (30) forment une unité.
  4. Procédé de fonctionnement d'un système de chauffage (10) selon l'une des revendications 1 à 3, le capteur de pression (36) envoyant la pression actuelle dans la canalisation montante du consommateur de chaleur (24) à l'unité de commande (38) qui ouvre au moins partiellement la première vanne (30) si une différence de pression actuelle déterminée par le capteur de pression (36) atteint une différence de pression maximale spécifiable, ou devient supérieure à celle-ci, dans la canalisation montante du consommateur de chaleur (24) et/ou lorsque la pression mesurée dans la canalisation montante du consommateur de chaleur (24) atteint une pression minimale spécifiable ou devient inférieure à celle-ci.
  5. Procédé selon la revendication 4, caractérisé en ce que la première vanne (30) est commandée et/ou régulée selon des paramètres et/ou des valeurs spécifiables si la différence de pression n'atteint pas la différence de pression maximale spécifiable et/ou si la pression instantanée n'atteint pas la pression minimale spécifiable.
  6. Procédé selon l'une des revendications 4 ou 5, caractérisé en ce que des mesures sont prises pour assurer la sécurité du système de chauffage (10) si la liaison entre l'unité de commande (38) et le capteur de pression (36) n'existe pas ou est défectueuse, et/ou en ce qu'un message d'avertissement correspondant est émis, notamment un clignotement et/ou un son et/ou un texte.
EP15167325.8A 2014-06-05 2015-05-12 Installation de chauffage et procédé de fonctionnement d'une installation de chauffage Active EP2957837B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014210745.8A DE102014210745A1 (de) 2014-06-05 2014-06-05 Heizungsanlage sowie Verfahren zum Betreiben einer Heizungsanlage

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EP2957837A1 EP2957837A1 (fr) 2015-12-23
EP2957837B1 true EP2957837B1 (fr) 2022-08-17

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TR202100030A2 (tr) 2021-01-04 2021-07-26 Bosch Termoteknik Isitma ve Klima Sanayi Ticaret Anonim Sirketi Bi̇r isitici ci̇hazin çaliştirilmasi i̇çi̇n yöntem ve bi̇r odanin ve/veya i̇çme suyu akiminin isitilmasi i̇çi̇n bi̇r isitici ci̇haz

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DE19923296A1 (de) * 1999-05-21 2000-12-07 Baelz Gmbh Helmut Anlage mit Prüfeinrichtung
AT500673B8 (de) * 2003-07-24 2007-02-15 Schwarz Alois Mehrwegventil
DE102004035298B4 (de) * 2004-07-21 2006-08-17 Robert Bosch Gmbh Warmwasserheizanlage mit einer hydraulischen Schutzschaltung und Verfahren zum Betreiben derselben
EP2613097B2 (fr) * 2012-01-09 2020-11-18 Grundfos Holding A/S Appareil de chauffage

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EP2957837A1 (fr) 2015-12-23

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