EP4086526A1 - Procédé de surveillance d'une installation de chauffage, programme informatique, appareil de régulation et de commande, installation de chauffage et utilisation des données de fonctionnement d'une installation de chauffage - Google Patents

Procédé de surveillance d'une installation de chauffage, programme informatique, appareil de régulation et de commande, installation de chauffage et utilisation des données de fonctionnement d'une installation de chauffage Download PDF

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Publication number
EP4086526A1
EP4086526A1 EP22171243.3A EP22171243A EP4086526A1 EP 4086526 A1 EP4086526 A1 EP 4086526A1 EP 22171243 A EP22171243 A EP 22171243A EP 4086526 A1 EP4086526 A1 EP 4086526A1
Authority
EP
European Patent Office
Prior art keywords
heating system
heat transfer
operating data
circuit
time series
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.)
Pending
Application number
EP22171243.3A
Other languages
German (de)
English (en)
Inventor
Lars Heinen
Sebastian Fleischmann
Tim Nettingsmeier
Ramona Wirsen
Slavko Pantic
David Eichholtz
Seyed Reza Hosseini
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.)
Vaillant GmbH
Original Assignee
Vaillant 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 Vaillant GmbH filed Critical Vaillant GmbH
Publication of EP4086526A1 publication Critical patent/EP4086526A1/fr
Pending legal-status Critical Current

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Classifications

    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/242—Pressure
    • 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
    • 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
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/104—Inspection; Diagnosis; Trial operation
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/269—Time, e.g. hour or date
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/395—Information to users, e.g. alarms
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/40—Control of fluid heaters characterised by the type of controllers
    • F24H15/486—Control of fluid heaters characterised by the type of controllers using timers
    • 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
    • F24D2220/042—Temperature 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
    • F24D2220/04—Sensors
    • F24D2220/046—Pressure sensors

Definitions

  • the invention relates to a method for monitoring a heating system, in particular for forecasting a point in time at which a critical pressure will occur in a heat transfer medium circuit of a heating system, a computer program, a storage medium, a control unit, a computer and a use.
  • a common reason for a safety shutdown of a heating system is insufficient pressure in the heat transfer medium circuit.
  • the safety shutdown leads to a loss of the heating and hot water supply of the affected building and to an emergency intervention by a service company.
  • Such emergency calls make it difficult to plan appointments for service calls and are also cost-intensive for the operator of the heating system.
  • Monitoring processes for heating systems are known as a remedy, which evaluate sensor data locally or by means of remote transmission and, if necessary, automatically report a safety shutdown of the heating system, for example to a service company.
  • a safety shutdown of the heating system for example to a service company.
  • the fact that the pressure in the heat transfer circuit has reached a threshold value can also be reported by remote transmission. It has been shown, however, that safety shutdowns of heating systems often occur and even using the threshold value of the pressure in the heat transfer circuit does not allow a sufficiently precise forecast of a failure time.
  • the object of the invention to provide a method for predicting a point in time of a critical pressure in a heat transfer medium circuit of a heating system, which at least partially overcomes the problems of the prior art described and in particular reduces the occurrence of safety shutdowns due to insufficient pressure in the heat transfer medium circuit. Furthermore, to solve the tasks, a computer program, a control device, a heating system, a computer and a use should be specified.
  • the proposed method should not increase the complexity of a heating system, for example through additional sensors, if possible, or only to a small extent.
  • Steps a) - e) are carried out at least once in the specified sequence during normal operation.
  • Step a), ie the acquisition of the time series, can preferably be carried out continuously.
  • Steps b) to e) can also preferably be carried out continuously or at regular time intervals.
  • Step e) can preferably be carried out once after each method step has been carried out and a detection of error states, implausible or non-transmitted data can lead to the output of a notification.
  • Carrying out step a) several times to increase the database for carrying out the further steps can also be advantageous under certain circumstances. In particular, when performing steps b) and c) for the first time, it may appear sensible to perform step a) several times.
  • the invention can be used in particular for the automated prognosis of a point in time when a critical pressure will be reached in the heat carrier circuit of the heating system, in other words for the automated prognosis of a failure point in a heating system due to insufficient pressure in the heat carrier circuit of the heating system.
  • other error states such as failures of components, such as sensors, of the heating system can also be detected using the proposed method.
  • the method can be carried out with any heating system having a heat transfer medium circuit.
  • Water is generally used as the heat transfer medium in the heat transfer medium circuit, it being possible to carry out the proposed method for any heat transfer medium.
  • Step a) comprises in particular sensory acquisition of operating data, with separate sensors for acquiring sensor readings being provided and/or control units of operating parameters of components of the heating system being able to provide characteristic readings which can be the basis for the operating data.
  • characteristic readings For example, concrete operating data or information derived from them can be used to identify when or whether a topping-up process takes place in the heat transfer medium circuit (cf. step b)), possibly by means of a comparison with reference events.
  • a loss rate of the pressure in the heat transfer circuit can then be determined (estimated, calculated and/or selected from a model) according to step c).
  • step d it can be further determined when (in the future) the pressure will have dropped so far that it will reach a critical threshold value (prognosis—step d)).
  • a critical threshold value prognosis—step d)
  • this result is then transmitted to a control unit and/or a heating system operator in the form of a notification—possibly embedded in or supplemented by at least one error or warning message.
  • At least one time series of operating data from the heating system can be recorded.
  • the operating data can include detectable sensor data, operating parameters, data on system states and/or error messages that are stored in an error memory, for example.
  • the operating data can be, for example, a pressure in the heat carrier circuit, a flow temperature and a return temperature of the heat carrier circuit, stored error messages for the heating system or for components of the same, for example the heat generator, System parameters and information on the heating system, operating states of the heating system and the heat generator, operating states of a conveyor of the heat transfer medium circuit (heating circuit pump) and/or times of failures of the heating system due to insufficient pressure in the heat transfer medium circuit.
  • Operating data is preferably recorded which is provided by a heating system according to the prior art, so that no additional sensors or other devices have to be introduced for carrying out the proposed method.
  • a time series can be understood as a data set of operating data of the heating system or the heat transfer medium circuit that is recorded regularly, i.e. at different times.
  • the at least one time series of operating data recorded in step a) can be checked for gaps in the time series and/or implausible values.
  • a check for implausible values can be carried out, for example, on the basis of statistical evaluations of value ranges, scatter, comparison with data from similar heating systems and/or other data. If gaps in the time series and/or implausible values are found, step e) can be carried out and a corresponding notification can be issued.
  • points in time of filling processes of the heat carrier circuit can be identified from the at least one time series of operating data recorded in step a).
  • the times at which the heat transfer medium circuit is topped up can be identified, for example, on the basis of a sudden increase in pressure in the heat transfer medium circuit. Since the pressure changes due to a filling process are outside of the usual fluctuations (caused, for example, by heating the heat transfer medium and/or statistical fluctuations), filling processes can advantageously be identified with a high degree of certainty.
  • refilling processes can be determined with high accuracy and safety/reliability using the time series from operating data recorded in step a).
  • data from automatic refilling devices are often not within the access range of the heat generator, so they cannot be easily accessed or obtained by a regulation and control unit of the heating system.
  • a detection of refill processes is also known, which is stored manually by the customer or a service operation in a software provided, for example an app for a mobile terminal device.
  • data collected in this way is also associated with considerable uncertainties due to the manual input.
  • step b when carrying out step b), an identification of frequent filling processes of the heat transfer medium circuit that are close together in time could indicate problems in the heating system, for example a leak in the heat transfer medium circuit.
  • Carrying out step e) could also be pointed out in this case by issuing a notification that the heat carrier circuit has been topped up too frequently.
  • a loss rate of the pressure in the heat transfer circuit can be determined using the at least one time series of operating data recorded in step a) and/or the points in time of filling processes of the heat transfer circuit identified in step b).
  • the loss rate can be determined in particular by means of an analysis of the pressure behavior in the heat transfer circuit, including the relationships between the pressure in the heat transfer circuit, flow and return temperatures in various operating states of the heat generator and the delivery device of the heat transfer circuit and/or their development over a period of time.
  • this can be done by correcting the time series of the operating data recorded in step a) with the times of refilling processes identified in step b) (cleaning up the time series of the (identified) refilling processes by a loss rate without or to be determined independently of the filling processes) and then used in a time series algorithm to determine the pressure loss rate.
  • the time series algorithm can take various measured or calculated influencing factors into account, such as thermal expansion and/or operating states of the heat circuit pump. On the basis of the time series algorithm, a prognosis of the future pressure profile in the heat carrier circuit can advantageously be made possible.
  • both a current loss rate can be determined by analyzing more recently acquired operating data, and an average loss rate can be determined by looking at the operating data over a longer period of time. A development of the loss rate over a longer period of time can also be determined. If critical states or error states can be identified from the determination of the loss rate or its development, step e) can also be carried out at this point in time, and a notification about this can be output.
  • the loss rate determined in step c) can be used, in particular, to estimate or forecast a time when a critical pressure will be reached in the heat transfer medium circuit of the heating system.
  • data from comparable heating systems can be included, for example by averaging.
  • available data from comparable heating systems can be used to derive parameters from statistical models that describe or characterize the pressure behavior in the heat transfer medium circuit.
  • the parameters can be, for example, statistical fluctuation ranges for measurement and/or limit values for reaching an error state.
  • (hyper) parameters of machine learning algorithms can also be derived from the analysis of the data comparable heaters can be derived, which (also) can be included in the determination of the loss rate according to step c).
  • a notification can be issued about the period of time until a critical pressure is reached in the heat transfer medium circuit of the heating system and/or about critical states of the heating system or error messages from the heating system.
  • a notification can be issued in any form.
  • an optical and/or acoustic warning signal can be output.
  • an output can also take place via a display unit.
  • a notification can be output in step e) via a network.
  • the network can in particular be the Internet.
  • issuing a notification can also consist of providing an interface for retrieving a state of the heating system determined as part of the method and/or a forecast of a point in time when a critical pressure will be reached in the heat transfer medium circuit of the heating system.
  • a notification according to step c) can be output via a network to a facility responsible for maintaining the heating system.
  • the facility responsible for maintenance can be, for example, a contractual partner and/or a service company responsible for maintenance. Because the information about the period of time until a critical pressure is reached in the heat carrier circuit is output in advance, a corresponding maintenance appointment can be planned and a safety shutdown of the heating system can be avoided.
  • a notification can also be issued be transmitted to an operator of the heating system, for example to a mobile terminal device, in which case the mobile terminal device can also be connected via an interface to a device executing the method, such as a computer or a control device, and the operator can be connected via a corresponding application on a computer or mobile terminal device has permanent access to the determined period of time until a critical pressure is reached in the heat transfer medium circuit of the heating system or possible error messages.
  • a device executing the method such as a computer or a control device
  • the method can be carried out in parallel for a number of heating systems, particularly preferably for a number of comparable heating systems or heating systems of a similar or the same type.
  • the time series recorded in step a) and the loss rates determined and/or the period of time determined until a critical pressure is reached in the heat carrier circuit can be compared, so that a more precise prognosis can be made possible.
  • a computer program is also proposed which is set up to (at least partially) carry out a method presented here.
  • this relates in particular to a computer program (product), comprising instructions which, when the program is executed by a computer, cause the latter to execute a method described here.
  • the computer program is set up in such a way that it can be run on a computer that is spatially separated from the heating system.
  • the computer program can receive the at least one time series of the operating data according to step a) via a network, in particular the Internet, or retrieve data from a programming interface of a heating system (in particular a control unit of a heating system) or a network memory.
  • the computer program can be set up for this purpose, issuing a Carry out notification according to step e) via a network, or to make it available via a programming interface (application interface).
  • the computer program can also be set up to call up or receive the operating data of a number of heating systems.
  • the computer program can be set up to carry out the method as part of incremental processing of the data stream of the time series of operating data recorded in step a) and/or as regular batch processing.
  • a machine-readable storage medium is also proposed, on which the computer program is stored.
  • the machine-readable storage medium is usually a computer-readable data carrier.
  • a regulation and control unit for a heating system is also proposed, set up to carry out a method proposed here.
  • the regulating and control unit can have a processor, for example, or have it at its disposal.
  • the processor can, for example, execute the method stored in a memory (of the regulation and control unit).
  • a further aspect relates to a heating device having a correspondingly set up regulation and control unit.
  • a further aspect relates to a computer set up to carry out a method proposed here.
  • the computer is set up to Acquiring the operating data according to step a) and issuing a notification according to step e) of the method proposed here via a network or to provide or retrieve it via a programming interface.
  • the computer is also preferably set up to execute the method proposed here for a number of heating systems in parallel.
  • a further aspect of the invention relates to the use of operating data from a heating system to estimate a period of time until a critical pressure is reached in the heat transfer medium circuit of the heating system.
  • a method for predicting a failure time of a heating system due to insufficient pressure in the heat carrier circuit, a computer program, a regulation and control device and computer for carrying out the method and a use are thus specified here, which at least partially solve the problems described with reference to the prior art .
  • it helps to reduce safety shutdowns of heating systems due to insufficient pressure in the heat transfer medium circuit and to ensure that maintenance work can be planned, in particular to fill up heat transfer medium in the heat transfer medium circuit. This leads to a gain in comfort and cost savings for users of the heating systems.
  • the method can be carried out using sensors and measuring technology that are regularly present in heating systems, so that the complexity of a heating system having a heating device or regulation and control device according to the invention is not increased compared to the prior art.
  • step e) can also be carried out after each of steps a), b), c) and d).
  • the heating system 1 can be connected to a communication device 6 in such a way that data can be exchanged.
  • the communication device 6 can also be an integral part of the heating system 1, in particular of the regulating and control device 3.
  • the system may also include a computer 10, which may include a memory unit and a processor.
  • the computer 10 and the communication device 6 can be connected to a network 9 that In particular, the Internet can be, whereby an exchange of data can be made possible.
  • a communication device of a user 7 and a communication device of a service company 8 can be connected to the network 9 .
  • step a at least one time series of operating data of the heating system 1 is recorded.
  • the at least one time series of the operating data can also be checked for gaps in the time series and/or implausible values.
  • a gap in the time series could, for example, indicate a defect or failure of at least part of the sensors 4 or another device in the heating system 1 .
  • a check for implausible values can be carried out on the basis of statistical evaluations of value ranges and scattering of the recorded operating data, a comparison with data from similar heating systems. If gaps in the time series or implausible values are identified, step e) can be carried out and a corresponding notification can be sent via the network 9 to the computer 10 and/or the communication device of the user 7 or the service company 8 .
  • the time series of the operating data recorded in step a) can be used to determine the times of filling processes in the heat carrier circuit 2 of the heating system 1, for example based on a pressure in the heat carrier circuit 2 recorded in step a), with a sudden increase in a filling process could point out.
  • step b) the determined points in time of the filling processes could also be checked for abnormalities, with short time intervals between the filling processes being able to indicate a leak in the heat carrier circuit 2, for example.
  • step e) could be carried out and a corresponding notification sent via the network 9 to the computer 10 and/or the communication device of the user 7 and/or the service company 8 .
  • a loss rate of the pressure in the heat carrier circuit 2 can be calculated, in particular based on the points in time of the filling processes determined in step b). Further operating data from the at least one time series recorded in step a) can also be used for the calculation.
  • a check for a critical state of the heating system 1 can also be carried out as part of the implementation of step c) and, if necessary, a corresponding notification can be output via the network 9 to the computer 10 and/or the communication device of the user 7 or the service company 8 .
  • step d a forecast of a point in time for reaching a critical pressure in the heat carrier circuit 2 of the heating system 1 can be created. A filling process should therefore take place by the predicted time in order to avoid a safety shutdown of the heating system 1.
  • step e an output of a notification about the point in time for reaching a critical pressure in the heat carrier circuit 2 of the heating system 1 can now be issued.
  • the method can preferably be carried out using an incremental analysis of the time series of the operating data recorded in step a).
  • the time determined for the achievement of a critical pressure in the heat carrier circuit 2 via an interface of the communication device 6 or the computer 10 is permanently provided for retrieval by a communication device of the user 7 and/or service company 8 and is permanently adjusted in an incremental analysis of the time series recorded in step a).
  • the method can be carried out on the regulation and control unit 6 or preferably on the computer 10 .
  • a data stream of the time series of operating data recorded in step a) can be continuously transmitted to the computer 10 via the communication device 6 and the network 9.
  • the computer 10 can also be set up to carry out the method for several heating systems 1, preferably of the same or similar type, at the same time.
  • the computer 10 then has the operating data, loss rates of the pressure of the heat transfer medium circuits 2 etc. and can be included in the implementation of the method.

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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)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
EP22171243.3A 2021-05-04 2022-05-03 Procédé de surveillance d'une installation de chauffage, programme informatique, appareil de régulation et de commande, installation de chauffage et utilisation des données de fonctionnement d'une installation de chauffage Pending EP4086526A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021111467.5A DE102021111467A1 (de) 2021-05-04 2021-05-04 Verfahren zur Überwachung einer Heizungsanlage, Computerprogramm, Regel- und Steuergerät, Heizungsanlage und Verwendung von Betriebsdaten einer Heizungsanlage

Publications (1)

Publication Number Publication Date
EP4086526A1 true EP4086526A1 (fr) 2022-11-09

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EP22171243.3A Pending EP4086526A1 (fr) 2021-05-04 2022-05-03 Procédé de surveillance d'une installation de chauffage, programme informatique, appareil de régulation et de commande, installation de chauffage et utilisation des données de fonctionnement d'une installation de chauffage

Country Status (2)

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EP (1) EP4086526A1 (fr)
DE (1) DE102021111467A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989001112A1 (fr) * 1987-07-29 1989-02-09 Watector Aktiebolag Dispositif destine a empecher les degats d'eau dans les immeubles
GB2405702A (en) * 2003-09-04 2005-03-09 Robert Maxwell Pickering Monitoring and maintaining pressure in pressurised system
GB2551192A (en) * 2016-06-10 2017-12-13 Cook Bernard Automatic heating-system filling apparatus
US20180245801A1 (en) * 2017-02-28 2018-08-30 Honeywell International Inc. Evaluation of heating liquid pressure drops in a hydronic heating system
EP3620723A1 (fr) * 2018-09-06 2020-03-11 Honeywell International Inc. Dispositif de recharge pour un système de chauffage hydronique et procédé de fonctionnement

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989001112A1 (fr) * 1987-07-29 1989-02-09 Watector Aktiebolag Dispositif destine a empecher les degats d'eau dans les immeubles
GB2405702A (en) * 2003-09-04 2005-03-09 Robert Maxwell Pickering Monitoring and maintaining pressure in pressurised system
GB2551192A (en) * 2016-06-10 2017-12-13 Cook Bernard Automatic heating-system filling apparatus
US20180245801A1 (en) * 2017-02-28 2018-08-30 Honeywell International Inc. Evaluation of heating liquid pressure drops in a hydronic heating system
EP3620723A1 (fr) * 2018-09-06 2020-03-11 Honeywell International Inc. Dispositif de recharge pour un système de chauffage hydronique et procédé de fonctionnement

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