EP3896360A1 - A system for detecting clogging in a heat exchanger - Google Patents
A system for detecting clogging in a heat exchanger Download PDFInfo
- Publication number
- EP3896360A1 EP3896360A1 EP21165766.3A EP21165766A EP3896360A1 EP 3896360 A1 EP3896360 A1 EP 3896360A1 EP 21165766 A EP21165766 A EP 21165766A EP 3896360 A1 EP3896360 A1 EP 3896360A1
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- measurements
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 238000010438 heat treatment Methods 0.000 claims abstract description 46
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 238000005259 measurement Methods 0.000 claims description 21
- 230000004913 activation Effects 0.000 claims description 15
- 230000009849 deactivation Effects 0.000 claims description 13
- 238000009529 body temperature measurement Methods 0.000 claims description 12
- 238000001994 activation Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 210000002023 somite Anatomy 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply
-
- 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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/48—Water heaters for central heating incorporating heaters for domestic water
- F24H1/52—Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
-
- 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
-
- 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
- F24H15/212—Temperature of the water
- F24H15/219—Temperature of the water after heating
-
- 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
- F24H15/238—Flow rate
-
- 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
- F24H15/414—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based
- F24H15/45—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based remotely accessible
-
- 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
- F24D2220/044—Flow sensors
-
- 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
- F24H15/355—Control of heat-generating means in heaters
-
- 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
- F24H15/414—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based
- F24H15/421—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based using pre-stored data
Definitions
- the invention relates to a system for detecting a blockage in the second volume of the heat exchanger in a water heater, which has a first line that is hydraulically connected to a central heating circuit, and a second line that is hydraulically connected to a domestic water line, a heating cell that is connected to the mentioned first line for heating the liquid in said first line is connected, a first volume which is hydraulically connected to the first line, and a second volume which is hydraulically connected to said second line, at least one heat transfer medium which is between the mentioned first volume and said second volume is provided, a heat exchanger for heat transfer between the first line and the second line comprises.
- Water heaters in particular combination water heaters, are connected to a central heating circuit and to a domestic water pipe. They ensure that the liquid in the central heating circuit and the water in the house water pipe are heated.
- the water in the central heating circuit is fed into the water heater, heated by a heating cell and fed back into the central heating circuit. Heating components such as radiators in the central heating circuit ensure that the rooms are heated.
- the water in the house water pipe is heated in that heat is transferred between the water from the central heating circuit after it has been heated and the water from the house water pipe using a heat exchanger.
- the heat exchanger contains a first volume through which the water from the central heating circuit flows, and a second volume through which the water from the domestic water pipe flows.
- the first volume and the second volume exchange heat via a heat transfer medium. In this case, heat is transferred from the water heated by a heating cell in the first volume of the central heating circuit to the water in the second volume of the domestic water pipe.
- the present invention relates to a system for eliminating the above-mentioned drawbacks and for detecting clogging in a heat exchanger in order to obtain new advantages in the relevant technical field.
- An object of the invention is to provide a system to detect the blockage in the domestic water pipe of the heat exchanger.
- Another object of the invention is to provide a system that enables a blockage in the domestic water line of the heat exchanger to be detected earlier than in systems in the prior art, so that the replacement of the spare part and the visit by the service technician can be planned.
- the consumption measuring device is a counter which counts the cycles in which the heating cell is activated and deactivated.
- a user interface is provided for displaying the generated signal, which is controlled by the control unit.
- the feature of another possible embodiment of the invention is that the mentioned user interface is provided on the water heater.
- the feature of another possible embodiment of the invention is that the mentioned user interface is arranged remotely from the water heater and is connected to the control unit by wire or wirelessly.
- the mentioned user interface is provided on an electronic terminal and is configured in such a way that it communicates wirelessly with the control unit. If the terminal is a server, additional information about water heaters is obtained, which enables the replacement of the spare part and the visit of the service technician to be planned and negative effects on the user to be reduced.
- control unit is configured to recognize the increasing trend when it determines that the beginning and the end of a predetermined number of monitored measurements are in a first value range which is above the beginning and end of a normal value range, and to recognize the decrease trend when it determines that the beginning and the end of a predetermined number of monitored measurements are in a second value range which is below the beginning and end of a normal value range.
- Fig. 1 a view of the water heater is shown.
- Fig. 2 a schematic view of the system is shown.
- the invention relates to a system (200) for detecting blockages in the heat exchanger (150) in water heaters (100).
- the water heater (100) contains a first line (110) which is hydraulically connected to a central heating circuit (310), and a second line (120) which is hydraulically connected to the domestic water line.
- the liquid circulating in the central heating circuit (310) enters the first line (110), exits again after heating and is reintroduced into the central heating circuit (310).
- the tap water which comes from a pipe such as the municipal water supply, enters the second pipe (120) and, after heating, is introduced into the domestic water pipe so that consumers can use it via components such as faucets and the like.
- the liquid in the mentioned first line (110) can be water or another liquid that is used for heating purposes.
- the water heater (100) contains a heating cell (130) for heating the liquid in the first conduit (110).
- the aforementioned heating cell (130) provides through the consumption of energy elements such as electricity, gas and the like. Heat off.
- the heating cell (130) can be controlled by thermostat-like elements or a control unit (210). In other words, the cycles in which the heating cell (130) is activated and deactivated can be controlled by these components.
- the control unit (210) can switch the heating cell (130) on or off depending on the water temperature in the domestic water pipe (120).
- the first line (110) can also contain a pump (140) for moving the liquid.
- the water heater (100) contains a heat exchanger (150) to enable a heat transfer between the heated liquid in the first line (110) and the water in the second line (120) without these mixing with one another.
- the heat exchanger (150) can have a first volume (151) that receives the liquid in the first line (110), a second volume (152) that receives the liquid in the second line (120), and a heat transfer medium (153) for heat transfer between the first volume (151) and the second volume (152).
- the heat exchanger (150) can be of a type known in the art as the plate type.
- the innovation in the system (200) according to the invention consists in ensuring that the blockage in the first volume (151) of the heat exchanger (150) is detected early.
- the system (200) comprises a first flow measuring device (221) for measuring the volume flow of the liquid in the first line (110).
- the mentioned first flow measuring device (221) can be a flow sensor.
- the system (200) comprises a second flow measuring device (222) for measuring the rapidity of the volume flow of the liquid in the second line (120).
- the system (200) comprises a temperature sensor (230) for measuring the temperature of the liquid in the second line (120) leaving the heat exchanger (150).
- the system (200) comprises a counter (240) for recording the activation or deactivation states of the heating cell (130).
- the mentioned counter (240) can, for example, when the heating cell (130) is activated and deactivated, generate a signal, and in the activated state another signal can be generated depending on the load ratio in which it is working.
- the system comprises a control unit (210) contains a processor unit (211), which from the first flow measuring device (221), the second flow measuring device (222), the temperature sensor (230) and the counter (240) the flow, temperature measurements and information about the Receive activation and deactivation status.
- the mentioned control unit (210) comprises a memory unit (212) which is assigned to the processor unit (211) in such a way that the processor unit (211) can read and write the data.
- the processor unit (211) can be a microprocessor.
- the processor unit (211) stores the flow rate and temperature measurements as well as information on the activation and deactivation state associated with their reception times in a storage unit (212).
- the processor unit (211) monitors the measurements and information stored in the memory unit (212).
- the processor unit (211) generates a signal about the blockage in the second volume (152) when an increase in the temperature measurements received in a first time interval from the temperature sensor (230) is detected when it is determined that the temperature measurements in the first Time interval of the first flow measuring device (221) obtained flow measurements are within a predetermined value range if a decrease trend is determined in the flow measurements received by the second flow measuring device (222), and if an increase trend in the frequency of the activation and deactivation states of the counter (240 ) information obtained is ascertained.
- the processor unit (211) recognizes the increase trend and the decrease trend, for example, as follows, without having a restrictive effect:
- the processor unit (211) recognizes the increase trend when it determines that the initial values and final values of a predetermined number of monitored measurements are in a first value range, which is successively above the start values and end values of a normal value range, recognizes the decrease trend if it determines that the start values and end values of a predetermined number of monitored measurements are in a first value range, which is in order below the start and end of a normal value range Value range.
- the increasing trend can be recognized if it is determined that the majority of the successive measurements are increasing according to time and that it is above certain threshold values; the decrease trend can be recognized when it is determined that the majority of the successive measurements are decreasing and that it is below certain threshold values.
- the increase or decrease trend can be recognized by taking into account the maximum and / or minimum values observed at certain intervals.
- the increasing trend in the activation and deactivation state can be recognized by observing the increase in the frequency of activation and deactivation states in a certain period of time.
- the system can also comprise a user interface (250) associated with the processor unit (211) in order to ensure that said signal is sent to the user.
- the mentioned user interface (250) can be provided on the water heater (100).
- the user interface (250) can be arranged in a room remote from the water heater (100) and can provide data exchange with the processor unit (211) in a wired or wireless manner.
- the user interface (250) can be provided on an electronic terminal.
- the processor unit (211) can exchange the data wirelessly with the electronic terminal.
- the electronic terminal can be a server, a mobile device, a computer, and so on. If the terminal is a server, the blockage can be detected in advance by the technical service of the water heater (100) and spare parts can be obtained so that measures can be planned at an early stage.
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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)
- Computer Hardware Design (AREA)
- Fluid Mechanics (AREA)
- Water Supply & Treatment (AREA)
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Abstract
Die Erfindung betrifft ein System (200) zur Erkennung einer Verstopfung des Wärmetauschers (150) in einem Wasserheizer (100), der eine erste Leitung (110), die hydraulisch mit einem Zentralheizkreislauf (310) verbunden ist, und eine zweite Leitung (120), die hydraulisch mit einer Hauswasserleitung (320) verbunden ist, eine Heizzelle (130), die mit der erwähnten ersten Leitung (110) zur Erwärmung der Flüssigkeit in der ersten Leitung (110) verbunden ist, ein erstes Volumen (151), das hydraulisch mit der ersten Leitung (110) verbunden ist, und ein zweites Volumen (152), das hydraulisch mit der erwähnten zweiten Leitung (120) verbunden ist, mindestens ein Wärmeübertragungsmittel (153), das zwischen dem erwähnten ersten Volumen (151) und dem erwähnten zweiten Volumen (152) vorgesehen ist, einen Wärmetauscher (150) zur Wärmeübertragung zwischen der ersten Leitung (110) und der zweiten Leitung (120), umfasst. Die Verstopfung im zweiten Volumen (152) wird erkannt.The invention relates to a system (200) for detecting a blockage of the heat exchanger (150) in a water heater (100), which has a first line (110), which is hydraulically connected to a central heating circuit (310), and a second line (120) , which is hydraulically connected to a domestic water line (320), a heating cell (130) which is connected to the mentioned first line (110) for heating the liquid in the first line (110), a first volume (151) which is hydraulically connected to the first conduit (110), and a second volume (152) hydraulically connected to said second conduit (120), at least one heat transfer means (153) interposed between said first volume (151) and said second volume (152) is provided, a heat exchanger (150) for heat transfer between the first line (110) and the second line (120) comprises. The blockage in the second volume (152) is recognized.
Description
Die Erfindung betrifft ein System zur Erkennung einer Verstopfung im zweiten Volumen des Wärmetauschers in einem Wasserheizer, der eine erste Leitung, die hydraulisch mit einem Zentralheizkreislauf verbunden ist, und eine zweite Leitung, die hydraulisch mit einer Hauswasserleitung verbunden ist, eine Heizzelle, die mit der erwähnten ersten Leitung zur Erwärmung der Flüssigkeit in der erwähnten ersten Leitung verbunden ist, ein erstes Volumen, das hydraulisch mit der ersten Leitung verbunden ist, und ein zweites Volumen, das hydraulisch mit der erwähnten zweiten Leitung verbunden ist, mindestens ein Wärmeübertragungsmittel, das zwischen dem erwähnten ersten Volumen und dem erwähnten zweiten Volumen vorgesehen ist, einen Wärmetauscher zur Wärmeübertragung zwischen der ersten Leitung und der zweiten Leitung, umfasst.The invention relates to a system for detecting a blockage in the second volume of the heat exchanger in a water heater, which has a first line that is hydraulically connected to a central heating circuit, and a second line that is hydraulically connected to a domestic water line, a heating cell that is connected to the mentioned first line for heating the liquid in said first line is connected, a first volume which is hydraulically connected to the first line, and a second volume which is hydraulically connected to said second line, at least one heat transfer medium which is between the mentioned first volume and said second volume is provided, a heat exchanger for heat transfer between the first line and the second line comprises.
Wasserheizer, insbesondere Kombi-Wasserheizer, sind an einen Zentralheizkreislauf und an eine Hauswasserleitung angeschlossen. Sie sorgen für die Erwärmung der Flüssigkeit im Zentralheizkreislauf und des Wassers in der Hauswasserleitung. Das Wasser in dem Zentralheizkreislauf wird in den Wasserheizer eingeleitet, durch eine Heizzelle erwärmt und wieder in den Zentralheizkreislauf zurückgeleitet. Durch Heizkomponenten wie Heizkörper im Zentralheizkreislauf wird dafür gesorgt, dass die Räume geheizt werden.Water heaters, in particular combination water heaters, are connected to a central heating circuit and to a domestic water pipe. They ensure that the liquid in the central heating circuit and the water in the house water pipe are heated. The water in the central heating circuit is fed into the water heater, heated by a heating cell and fed back into the central heating circuit. Heating components such as radiators in the central heating circuit ensure that the rooms are heated.
Das Wasser in der Hauswasserleitung wird dadurch erwärmt, dass zwischen dem Wasser aus dem Zentralheizkreislauf nach dessen Erhitzen und dem Wasser aus der Hauswasserleitung anhand eines Wärmetauschers eine Wärmeübertragung durchgeführt wird. Der Wärmetauscher enthält ein erstes Volumen, durch welches das Wasser aus dem Zentralheizkreislauf fließt, und ein zweites Volumen, durch welches das Wasser der Hauswasserleitung fließt. Das erste Volumen und das zweite Volumen tauschen Wärme über ein Wärmeübertragungsmittel aus. Dabei erfolgt eine Wärmeübertragung aus dem durch eine Heizzelle erwärmten Wasser in dem ersten Volumen des Zentralheizkreislaufes auf das Wasser in dem zweiten Volumen der Hauswasserleitung.The water in the house water pipe is heated in that heat is transferred between the water from the central heating circuit after it has been heated and the water from the house water pipe using a heat exchanger. The heat exchanger contains a first volume through which the water from the central heating circuit flows, and a second volume through which the water from the domestic water pipe flows. The first volume and the second volume exchange heat via a heat transfer medium. In this case, heat is transferred from the water heated by a heating cell in the first volume of the central heating circuit to the water in the second volume of the domestic water pipe.
Sollte in der Hauswasserleitung des Wärmetauschers eine Verstopfung vorkommen, würde das Wasser sich langsam vorwärts bewegen, was dazu führt, dass das Wasser in der Hauswasserleitung überhitzt wird und aus den Wasserhähnen nicht mit ausreichend hohem Durchfluss fließt. Dies führt dazu, dass der Komfort der Benutzer negativ beeinflusst wird. Die Verstopfung kann mit der Zeit zu einer Beschädigung des Wärmetauschers führen und einen Flüssigkeitsfluss aus dem Zentralheizkreislauf in die Hauswasserleitung verursachen.Should a blockage occur in the house water pipe of the heat exchanger, the water would move slowly forward, which means that the water in the house water pipe is overheated and does not flow out of the taps with a sufficiently high flow rate. As a result, the comfort of the user is negatively affected. The blockage can damage the heat exchanger over time and cause liquid to flow from the central heating circuit into the domestic water pipe.
In der deutschen Patentanmeldung
Letztlich führen alle oben erwähnten Probleme zur Notwendigkeit einer Neuerung auf dem relevanten technischen Gebiet.Ultimately, all of the above-mentioned problems lead to the need for innovation in the relevant technical field.
Die vorliegende Erfindung betrifft ein System zur Beseitigung der oben erwähnten Nachteile und zur Erkennung von Verstopfungen in einem Wärmetauscher, um neue Vorteile auf dem relevanten technischen Gebiet zu erzielen.The present invention relates to a system for eliminating the above-mentioned drawbacks and for detecting clogging in a heat exchanger in order to obtain new advantages in the relevant technical field.
Eine Aufgabe der Erfindung ist es ein System bereitzustellen, um die Verstopfung in der Hauswasserleitung des Wärmetauschers zu erkennen.An object of the invention is to provide a system to detect the blockage in the domestic water pipe of the heat exchanger.
Eine weitere Aufgabe der Erfindung ist es ein System bereitzustellen, das ermöglicht, dass eine Verstopfung in der Hauswasserleitung des Wärmetauschers früher als in Systemen im Stand der Technik erkannt wird und so der Austausch des Ersatzteils sowie der Besuch des Servicetechnikers geplant werden können.Another object of the invention is to provide a system that enables a blockage in the domestic water line of the heat exchanger to be detected earlier than in systems in the prior art, so that the replacement of the spare part and the visit by the service technician can be planned.
Um alle oben erwähnten und sich aus der nachstehenden detaillierten Beschreibung ergebenden Aufgaben zu erfüllen, betrifft die vorliegende Erfindung ein System zur Erkennung einer Verstopfung im erwähnten Wärmetauscher in einem Wasserheizer, der eine erste Leitung, die hydraulisch mit einem Zentralheizkreislauf verbunden ist, und eine zweite Leitung, die hydraulisch mit einer Hauswasserleitung verbunden ist, eine Heizzelle, die mit der ersten Leitung zur Erwärmung der Flüssigkeit in der erwähnten ersten Leitung verbunden ist, ein erstes Volumen, das hydraulisch mit der ersten Leitung verbunden ist, und ein zweites Volumen, das hydraulisch mit der erwähnten zweiten Leitung verbunden ist, mindestens ein Wärmeübertragungsmittel, das zwischen dem erwähnten ersten Volumen und dem erwähnten zweiten Volumen vorgesehen ist, einen Wärmetauscher zur Wärmeübertragung zwischen der ersten Leitung und der zweiten Leitung, umfasst. Dementsprechend besteht die Neuerung darin, dass es einen Temperatursensor zur Messung der Temperatur der Flüssigkeit in der ersten Leitung, einen Zähler zur Erfassung der Aktivierungs- oder Deaktivierungszustände der Heizzelle, eine erste Durchflussmesseinrichtung zur Messung des Volumenstroms der Flüssigkeit in der ersten Leitung, eine zweite Durchflussmesseinrichtung zur Messung des Volumenstroms von Wasser in der zweiten Leitung, eine Steuereinheit, welche mit dem Temperatursensor, der ersten Durchflussmesseinrichtung, der zweiten Durchflussmesseinrichtung und dem Zähler in Verbindung steht und somit die Temperatur-, Durchfluss- und Zustandszählermessungen empfängt, umfasst,
wobei die Steuereinheit derart konfiguriert ist, dass sie die Informationen über die empfangenen Temperaturmessungen, Durchflussmessungen sowie die Aktivierungs- und Deaktivierungszustände den Empfangszeiten zuordnet und in einer Speichereinheit aufzeichnet,
und
- dass die aufgezeichneten Temperaturmessungen, Durchflussmessungen und Informationen über die Aktivierungszustände überwacht werden,
- dass ein Signal bezüglich einer Verstopfung im zweiten Volumen des Wärmetauschers erzeugt wird, wenn in einem ersten Zeitintervall ein Zunahmetrend der Temperaturmessungen aus dem Temperatursensor erkannt wird, wenn festgestellt wird, dass in dem erwähnten ersten Zeitintervall die von der ersten Durchflussmesseinrichtung erhaltenen Durchflussmessungen innerhalb eines vorbestimmten Wertebereichs liegen, wenn im ersten Zeitintervall ein Abnahmetrend in den von der zweiten Durchflussmesseinrichtung erhaltenen Durchflussmessungen festgestellt wird, und wenn im ersten Zeitintervall ein Zunahmetrend in der Häufigkeit von Informationen vom Zähler über den Aktivierungs- und Deaktivierungszustand festgestellt wird. Somit wird die Verstopfung in der Hauswasserleitung des Wärmetauschers erkannt und verhindert, dass der Benutzer übermäßig heißem Wasser ausgesetzt wird.
wherein the control unit is configured in such a way that it assigns the information about the received temperature measurements, flow measurements and the activation and deactivation states to the reception times and records it in a memory unit,
and
- that the recorded temperature measurements, flow measurements and information about the activation states are monitored,
- that a signal relating to a blockage in the second volume of the heat exchanger is generated if an increase in the temperature measurements from the temperature sensor is detected in a first time interval, if it is established that the flow measurements obtained from the first flow measuring device are within a predetermined value range in the mentioned first time interval if in the first time interval a decrease trend is determined in the flow measurements obtained by the second flow measuring device, and if in the first time interval an increase trend in the frequency of information from the counter about the activation and deactivation state is determined. Thus, the blockage in the domestic water pipe of the heat exchanger is detected and the user is prevented from being exposed to excessively hot water.
Das Merkmal einer möglichen Ausführungsform der Erfindung ist, dass die Verbrauchsmesseinrichtung ein Zähler ist, der die Zyklen zählt, in denen die Heizzelle aktiviert und deaktiviert ist.The feature of a possible embodiment of the invention is that the consumption measuring device is a counter which counts the cycles in which the heating cell is activated and deactivated.
Das Merkmal einer anderen möglichen Ausführungsform der Erfindung ist, dass eine Benutzerschnittstelle zur Darstellung des erzeugten Signals vorgesehen ist, die von der Steuereinheit gesteuert wird.The feature of another possible embodiment of the invention is that a user interface is provided for displaying the generated signal, which is controlled by the control unit.
Das Merkmal einer anderen möglichen Ausführungsform der Erfindung ist, dass die erwähnte Benutzerschnittstelle an dem Wasserheizer vorgesehen ist.The feature of another possible embodiment of the invention is that the mentioned user interface is provided on the water heater.
Das Merkmal einer anderen möglichen Ausführungsform der Erfindung ist, dass die erwähnte Benutzerschnittstelle vom Wasserheizer entfernt angeordnet und drahtgebunden oder drahtlos mit der Steuereinheit verbunden ist.The feature of another possible embodiment of the invention is that the mentioned user interface is arranged remotely from the water heater and is connected to the control unit by wire or wirelessly.
Das Merkmal einer anderen möglichen Ausführungsform der Erfindung ist, dass die erwähnte Benutzerschnittstelle auf einem elektronischen Terminal vorgesehen, und derart konfiguriert ist, dass sie drahtlos mit der Steuereinheit kommuniziert. Wenn es sich beim Terminal um einen Server handelt, werden zusätzliche Informationen über Wasserheizer erhalten, wodurch ermöglicht wird, dass der Austausch des Ersatzteils sowie der Besuch des Servicetechnikers geplant werden können und negative Auswirkungen auf den Benutzer reduziert werden.The feature of another possible embodiment of the invention is that the mentioned user interface is provided on an electronic terminal and is configured in such a way that it communicates wirelessly with the control unit. If the terminal is a server, additional information about water heaters is obtained, which enables the replacement of the spare part and the visit of the service technician to be planned and negative effects on the user to be reduced.
Das Merkmal einer anderen möglichen Ausführungsform der Erfindung ist, dass die Steuereinheit derart konfiguriert ist, den Zunahmetrend zu erkennen, wenn sie feststellt, dass sich der Anfang und das Ende einer vorgegebenen Anzahl überwachter Messungen in einem ersten Wertbereich befinden, der über dem Anfang und Ende eines normalen Wertbereichs liegt, und den Abnahmetrend zu erkennen, wenn sie feststellt, dass sich der Anfang und das Ende einer vorgegebenen Anzahl überwachter Messungen in einem zweiten Wertbereich befinden, der unter dem Anfang und Ende eines normalen Wertbereichs liegt.The feature of another possible embodiment of the invention is that the control unit is configured to recognize the increasing trend when it determines that the beginning and the end of a predetermined number of monitored measurements are in a first value range which is above the beginning and end of a normal value range, and to recognize the decrease trend when it determines that the beginning and the end of a predetermined number of monitored measurements are in a second value range which is below the beginning and end of a normal value range.
In
In
In dieser detaillierten Beschreibung wird der Gegenstand der Erfindung anhand von Beispielen erläutert, die lediglich dem besseren Verständnis des Gegenstands dienen und nicht einschränkend sind.In this detailed description, the subject matter of the invention is explained by means of examples, which only serve to provide a better understanding of the subject matter and are not restrictive.
Bei der Erfindung handelt es sich um ein System (200) zur Erkennung der Verstopfung im Wärmetauscher (150) in Wasserheizern (100). Bezugnehmend auf
Der Wasserheizer (100) enthält eine Heizzelle (130) zum Erhitzen der Flüssigkeit in der ersten Leitung (110). Die erwähnte Heizzelle (130) gibt durch den Verbrauch von Energieelementen wie Strom, Gas u. Ä. Wärme ab. Die Heizzelle (130) kann durch thermostatartige Elemente oder eine Steuereinheit (210) gesteuert werden. Mit anderen Worten können die Zyklen, in denen die Heizzelle (130) aktiviert und deaktiviert ist, von diesen Komponenten gesteuert werden. Zum Beispiel kann die Steuereinheit (210) je nach der Wassertemperatur in der Hauswasserleitung (120) die Heizzelle (130) einschalten oder ausschalten.The water heater (100) contains a heating cell (130) for heating the liquid in the first conduit (110). The aforementioned heating cell (130) provides through the consumption of energy elements such as electricity, gas and the like. Heat off. The heating cell (130) can be controlled by thermostat-like elements or a control unit (210). In other words, the cycles in which the heating cell (130) is activated and deactivated can be controlled by these components. For example, the control unit (210) can switch the heating cell (130) on or off depending on the water temperature in the domestic water pipe (120).
Die erste Leitung (110) kann auch eine Pumpe (140) zum Bewegen der Flüssigkeit enthalten.The first line (110) can also contain a pump (140) for moving the liquid.
Der Wasserheizer (100) enthält einen Wärmetauscher (150), um eine Wärmeübertragung zwischen der erwärmten Flüssigkeit in der ersten Leitung (110) und dem Wasser in der zweiten Leitung (120) zu ermöglichen, ohne dass diese sich miteinander vermischen. Der Wärmetauscher (150) kann ein erstes Volumen (151), das die Flüssigkeit in der ersten Leitung (110) aufnimmt, ein zweites Volumen (152), das die Flüssigkeit in der zweiten Leitung (120) aufnimmt, und ein Wärmeübertragungsmittel (153) zur Wärmeübertragung zwischen dem ersten Volumen (151) und dem zweiten Volumen (152) enthalten. Der Wärmetauscher (150) kann von einem Typ sein, der im Stand der Technik als Plattentyp bekannt ist. Die Neuerung in dem erfindungsgemäßen System (200) besteht darin, dafür zu sorgen, dass die Verstopfung in dem ersten Volumen (151) des Wärmetauschers (150) früh erkannt wird.The water heater (100) contains a heat exchanger (150) to enable a heat transfer between the heated liquid in the first line (110) and the water in the second line (120) without these mixing with one another. The heat exchanger (150) can have a first volume (151) that receives the liquid in the first line (110), a second volume (152) that receives the liquid in the second line (120), and a heat transfer medium (153) for heat transfer between the first volume (151) and the second volume (152). The heat exchanger (150) can be of a type known in the art as the plate type. The innovation in the system (200) according to the invention consists in ensuring that the blockage in the first volume (151) of the heat exchanger (150) is detected early.
Bezugnehmend auf
Das System umfasst eine Steuereinheit (210) enthält eine Prozessoreinheit (211), welche von der ersten Durchflussmesseinrichtung (221), der zweiten Durchflussmesseinrichtung (222), dem Temperatursensor (230) und dem Zähler (240) die Durchfluss-, Temperaturmessungen sowie Informationen zum Aktivierungs- und Deaktivierungszustand empfängt. Die erwähnte Steuereinheit (210) umfasst eine Speichereinheit (212), die der Prozessoreinheit (211) derart zugeordnet ist, dass die Prozessoreinheit (211) die Daten lesen und schreiben kann. Die Prozessoreinheit (211) kann ein Mikroprozessor sein.The system comprises a control unit (210) contains a processor unit (211), which from the first flow measuring device (221), the second flow measuring device (222), the temperature sensor (230) and the counter (240) the flow, temperature measurements and information about the Receive activation and deactivation status. The mentioned control unit (210) comprises a memory unit (212) which is assigned to the processor unit (211) in such a way that the processor unit (211) can read and write the data. The processor unit (211) can be a microprocessor.
Die Prozessoreinheit (211) speichert die Durchfluss-, und Temperaturmessungen sowie Informationen zum Aktivierungs- und Deaktivierungszustand zugeordnet zu ihren Empfangszeiten in einer Speichereinheit (212).The processor unit (211) stores the flow rate and temperature measurements as well as information on the activation and deactivation state associated with their reception times in a storage unit (212).
Im Falle einer Verstopfung im zweiten Volumen (152) des Wärmetauschers (150) wird die Flüssigkeit im zweiten Volumen (152) sich langsamer bewegen und der erhitzten Flüssigkeit im ersten Volumen (151) mehr ausgesetzt, weshalb die Temperatur schneller steigt. Da ein übermäßiger Temperaturanstieg dazu führt, dass die Heizzelle (130) häufiger eingeschaltet und ausgeschaltet wird, würde die Anzahl der Aktivierungen und Deaktivierungen der Heizzelle (130) zunehmen. Da im ersten Volumen (151) keine Verstopfung besteht, wird der Durchfluss der Flüssigkeit in der ersten Leitung nicht beeinflusst.In the event of a blockage in the second volume (152) of the heat exchanger (150), the liquid in the second volume (152) will move more slowly and more exposed to the heated liquid in the first volume (151), which is why the temperature rises faster. Since an excessive rise in temperature results in the heating cell (130) being switched on and off more frequently, the number of activations and deactivations of the heating cell (130) would increase. Since there is no blockage in the first volume (151), the flow of the liquid in the first line is not affected.
Demnach überwacht die Prozessoreinheit (211) die Messungen und Informationen, die in der Speichereinheit (212) gespeichert sind. Als Neuerungsaspekt der Erfindung erzeugt die Prozessoreinheit (211) ein Signal über die Verstopfung im zweiten Volumen (152), wenn ein Zunahmetrend der in einem ersten Zeitintervall aus dem Temperatursensor (230) empfangenen Temperaturmessungen erkannt wird, wenn festgestellt wird, dass die in dem ersten Zeitintervall von der ersten Durchflussmesseinrichtung (221) erhaltenen Durchflussmessungen innerhalb eines vorbestimmten Wertebereichs liegen, wenn ein Abnahmetrend in den von der zweiten Durchflussmesseinrichtung (222) erhaltenen Durchflussmessungen festgestellt wird, und wenn ein Zunahmetrend in der Häufigkeit der Aktivierungs- und Deaktivierungszustände der vom Zähler (240) erhaltenen Informationen festgestellt wird.Accordingly, the processor unit (211) monitors the measurements and information stored in the memory unit (212). As an innovation aspect of the invention, the processor unit (211) generates a signal about the blockage in the second volume (152) when an increase in the temperature measurements received in a first time interval from the temperature sensor (230) is detected when it is determined that the temperature measurements in the first Time interval of the first flow measuring device (221) obtained flow measurements are within a predetermined value range if a decrease trend is determined in the flow measurements received by the second flow measuring device (222), and if an increase trend in the frequency of the activation and deactivation states of the counter (240 ) information obtained is ascertained.
Die Prozessoreinheit (211) erkennt den Zunahmetrend und den Abnahmetrend beispielhaft wie folgt, ohne einschränkend zu wirken: Die Prozessoreinheit (211) erkennt den Zunahmetrend, wenn sie feststellt, dass sich die Anfangswerte und Endwerte einer vorgegebenen Anzahl überwachter Messungen in einem ersten Wertbereich befinden, welcher der Reihe nach über den Anfangswerten und Endwerten eines normalen Wertbereichs liegt, erkennt den Abnahmetrend, wenn sie feststellt, dass sich die Anfangswerte und Endwerte einer vorgegebenen Anzahl überwachter Messungen in einem ersten Wertbereich befinden, welcher der Reihe nach unter dem Anfang und Ende eines normalen Wertbereichs liegt. Als Alternative kann der Zunahmetrend erkannt werden, wenn festgestellt wird, dass die Mehrzahl der aufeinanderfolgenden Messungen entsprechend der Zeit zunimmt, und dass sie über bestimmten Schwellenwerten liegt; der Abnahmetrend kann erkannt werden, wenn festgestellt wird, dass die Mehrzahl der aufeinanderfolgenden Messungen abnimmt, und dass sie unter bestimmten Schwellenwerten liegt. In einer möglichen Ausführung kann der Zunahme- oder Abnahmetrend durch Berücksichtigung der in bestimmten Intervallen beobachteten Maximal- und/oder Minimalwerte erkannt werden. Der Zunahmetrend im Aktivierungs- und Deaktivierungszustand kann durch Beobachtung der Zunahme der Häufigkeit von Aktivierungs- und Deaktivierungszuständen in einem bestimmten Zeitraum erkannt werden.The processor unit (211) recognizes the increase trend and the decrease trend, for example, as follows, without having a restrictive effect: The processor unit (211) recognizes the increase trend when it determines that the initial values and final values of a predetermined number of monitored measurements are in a first value range, which is successively above the start values and end values of a normal value range, recognizes the decrease trend if it determines that the start values and end values of a predetermined number of monitored measurements are in a first value range, which is in order below the start and end of a normal value range Value range. As an alternative, the increasing trend can be recognized if it is determined that the majority of the successive measurements are increasing according to time and that it is above certain threshold values; the decrease trend can can be recognized when it is determined that the majority of the successive measurements are decreasing and that it is below certain threshold values. In one possible embodiment, the increase or decrease trend can be recognized by taking into account the maximum and / or minimum values observed at certain intervals. The increasing trend in the activation and deactivation state can be recognized by observing the increase in the frequency of activation and deactivation states in a certain period of time.
Das System kann auch eine der Prozessoreinheit (211) zugeordnete Benutzerschnittstelle (250) umfassen, um zu gewährleisten, dass das genannte Signal an den Benutzer gesendet wird. Die erwähnte Benutzerschnittstelle (250) kann an dem Wasserheizer (100) vorgesehen sein. Die Benutzerschnittstelle (250) kann in einer möglichen Ausführungsform in einem vom Wasserheizer (100) entfernten Raum angeordnet sein und drahtgebunden oder drahtlos für Datenaustausch mit der Prozessoreinheit (211) sorgen. In einer möglichen Ausführungsform kann die Benutzerschnittstelle (250) auf einem elektronischen Terminal vorgesehen sein. Die Prozessoreinheit (211) kann die Daten drahtlos mit dem elektronischen Terminal austauschen. Das elektronische Terminal kann ein Server, ein mobiles Gerät, ein Computer usw. sein. Falls es sich beim Terminal um einen Server handelt, kann die Verstopfung vom Technik-Service des Wasserheizers (100) im Voraus erkannt und Ersatzteile besorgt werden, so dass eine frühe Maßnahmenplanung vorgenommen werden kann.The system can also comprise a user interface (250) associated with the processor unit (211) in order to ensure that said signal is sent to the user. The mentioned user interface (250) can be provided on the water heater (100). In one possible embodiment, the user interface (250) can be arranged in a room remote from the water heater (100) and can provide data exchange with the processor unit (211) in a wired or wireless manner. In one possible embodiment, the user interface (250) can be provided on an electronic terminal. The processor unit (211) can exchange the data wirelessly with the electronic terminal. The electronic terminal can be a server, a mobile device, a computer, and so on. If the terminal is a server, the blockage can be detected in advance by the technical service of the water heater (100) and spare parts can be obtained so that measures can be planned at an early stage.
Der Schutzumfang der Erfindung ist in den Ansprüchen in der Anlage angegeben und kann nicht auf das beschränkt werden, was in dieser detaillierten Beschreibung zum Zweck der Angabe von Beispielen erläutert wird. Es ist offensichtlich, dass der Fachmann auf dem technischen Gebiet im Lichte der obigen Erläuterungen ähnliche Ausführungsformen erstellen kann.The scope of the invention is indicated in the appended claims and cannot be limited to what is set forth in this detailed description for the purpose of giving examples. It is obvious that those skilled in the technical field can create similar embodiments in light of the above explanations.
- 100 Wasserheizer100 water heaters
- 110 Erste Leitung110 First line
- 120 Zweite Leitung120 Second line
- 130 Heizzelle130 heating cell
- 140 Pumpe140 pump
- 150 Wärmetauscher150 heat exchangers
- 151 Erstes Volumen151 First volume
- 152 Zweites Volumen152 Second volume
- 153 Wärmeübertragungsmittel153 heat transfer media
- 200 System200 system
- 210 Steuereinheit210 control unit
- 211 Prozessoreinheit211 processor unit
- 212 Speichereinheit212 storage unit
- 221 Erste Durchflussmesseinrichtung221 First flow meter
- 222 Zweite Durchflussmesseinrichtung222 Second flow measuring device
- 230 Temperatursensor230 temperature sensor
- 240 Zähler240 counters
- 250 Benutzerschnittstelle250 user interface
- 310 Zentralheizkreislauf310 central heating circuit
- 320 Hauswasserleitung320 house water pipe
Claims (7)
wobei die Steuereinheit (210) derart konfiguriert ist, dass sie die empfangenen Temperaturmessungen, Durchflussmessungen sowie die Informationen über Aktivierungs-und Deaktivierungszustände deren Empfangszeiten zuordnet und in einer Speichereinheit (212) gespeichert, und
wherein the control unit (210) is configured in such a way that it assigns the received temperature measurements, flow measurements and the information about activation and deactivation states to their reception times and stores them in a memory unit (212), and
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DE102009042994A1 (en) | 2009-09-25 | 2011-03-31 | Linde Aktiengesellschaft | Method for monitoring operation of e.g. plate-type heat exchanger in chemical plant to control safety precautions, involves providing circuit e.g. valves, to control volumetric flow of fluid streams into apparatus depending on comparison |
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