DE102004004064A1 - The assembly to monitor sacrifice anode wear, in a hot water tank, has a circuit with electrical connections to the anode and the tank wall for the current to be compared against a threshold - Google Patents
The assembly to monitor sacrifice anode wear, in a hot water tank, has a circuit with electrical connections to the anode and the tank wall for the current to be compared against a threshold Download PDFInfo
- Publication number
- DE102004004064A1 DE102004004064A1 DE200410004064 DE102004004064A DE102004004064A1 DE 102004004064 A1 DE102004004064 A1 DE 102004004064A1 DE 200410004064 DE200410004064 DE 200410004064 DE 102004004064 A DE102004004064 A DE 102004004064A DE 102004004064 A1 DE102004004064 A1 DE 102004004064A1
- Authority
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- Germany
- Prior art keywords
- anode
- current
- sacrificial anode
- hot water
- circuit
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 238000012544 monitoring process Methods 0.000 claims description 8
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract 1
- 238000009413 insulation Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 13
- 229910052742 iron Inorganic materials 0.000 description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 6
- 239000011777 magnesium Substances 0.000 description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 5
- 230000007547 defect Effects 0.000 description 5
- 229910052749 magnesium Inorganic materials 0.000 description 5
- -1 hydroxyl ions Chemical class 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 235000010216 calcium carbonate Nutrition 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 210000003298 dental enamel Anatomy 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- NKWPZUCBCARRDP-UHFFFAOYSA-L calcium bicarbonate Chemical compound [Ca+2].OC([O-])=O.OC([O-])=O NKWPZUCBCARRDP-UHFFFAOYSA-L 0.000 description 1
- 229910000020 calcium bicarbonate Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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
- F24H9/00—Details
- F24H9/40—Arrangements for preventing corrosion
- F24H9/45—Arrangements for preventing corrosion for preventing galvanic corrosion, e.g. cathodic or electrolytic means
- F24H9/455—Arrangements for preventing corrosion for preventing galvanic corrosion, e.g. cathodic or electrolytic means for water heaters
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
- C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
- C23F13/22—Monitoring arrangements therefor
-
- 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
- F24H9/00—Details
- F24H9/40—Arrangements for preventing corrosion
- F24H9/45—Arrangements for preventing corrosion for preventing galvanic corrosion, e.g. cathodic or electrolytic means
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
Description
Bei Warmwasserspeichern ist es Stand der Technik als Korrosionsschutz Opferanoden, insbesondere Magnesium-Stäbe zu verwenden. Hierdurch können Defekte in der Emaillierung geschützt werden. Darüber hinaus können Fehlstellen mit einer neuen Schutzschicht überzogen werden. Durch Polarisierungseffekte wird die Eisenauflösung dabei zurückgedrängt. Dies geschieht zu Lasten des Verbrauchs der Opferanode. Bei der Bildung von Hydroxyllonen kann es im Bereich der Kathoden zur Ausfällung von Calciumcarbonat kommen, wodurch eine Schutzschicht entsteht. Das Calciumcarbonat schließt die Fehlstellen in der Emaillierung.It is the case with hot water storage tanks the technology as corrosion protection sacrificial anodes, especially magnesium rods. This can Defects in the enamelling are protected. Furthermore can Defects can be covered with a new protective layer. Through polarization effects becomes the iron dissolution pushed back. This happens at the expense of the consumption of the sacrificial anode. In education of hydroxyl ions can be used in the area of the cathodes to precipitate Calcium carbonate come, which creates a protective layer. The Calcium carbonate closes the flaws in the enamel.
Opferanoden in Trinkwasserbehältern werden zumeist aus Magnesium hergestellt. Sie werden zumeist in Stangenform und in Form von dicken Ketten eingesetzt. Magnesium hat den Vorteil, dass es sich ganz unten in der elektrochemischen Spannungsreihe befindet und somit das unedelste Metall ist.Be sacrificial anodes in drinking water containers mostly made of magnesium. They are mostly in stick form and used in the form of thick chains. Magnesium has the advantage that it is at the bottom of the electrochemical voltage series and is the most base metal.
Beispiele aus der elektrochemischen Spannungsreihe : Gold +1,42V, Quecksilber +0,79V , Wasserstoff +-OV, Eisen –0,44V und Magnesium –2,34V.Examples from the electrochemical Voltage series: gold + 1.42V, mercury + 0.79V, hydrogen + -OV, Iron -0.44V and magnesium -2.34V.
Während des Betriebs braucht sich die Anode auf. Auf den Verbrauch der Anode haben folgende Faktoren Einfluß: Die Wasserqualität im Speicher, die Wassertemperatur, Fehl- und Zehrstellen, der Wasserdurchsatz, die Leitfähigkeit des Wassers und der Kalkgehalt des Wassers. Bei sehr aggressivem bzw. sauerstoffhaltigem Wasser löst sich die Anode besonders schnell auf. Bei Trinkwasser aus Talsperren ergibt sich der spezielle Fall, dass dieses Wasser sehr weich ist und somit wenig Calciumhydrogencarbonat enthält und eine Kalkablagerung an der Fehlstelle nur unzureichend bzw. gar nicht geschieht.While the anode is used up during operation. On the consumption of the anode have the following factors: The water quality in the storage tank, the water temperature, defects and tears, the water throughput, the conductivity of the water and the lime content of the water. With very aggressive or oxygen-containing water the anode opens up very quickly. For drinking water from dams the special case that this water is very soft and therefore contains little calcium hydrogen carbonate and limescale insufficient or not happening at the missing part.
Die Funktionsweise der Opferanoden basiert auf dem Prinzip der galvanischen Elemente. Bei diesen sind zwei Metalle (Kathode, Anode) durch eine elektrisch leitende Flüssigkeit (Elektrolyd) verbunden. Das unedlere Material (Mg-Anode) geht im Vergleich zu Eisen (Kathode) eher in Lösung. Die Elektroden wandern über eine leitende Verbindung zur Stahlseite und verhindern das Austragen von Eisenionen.How the sacrificial anodes work is based on the principle of galvanic elements. With these are two metals (cathode, anode) through an electrically conductive liquid (Elektrolyd) connected. The less noble material (Mg anode) goes in Compared to iron (cathode) rather in solution. The electrodes move over one conductive connection to the steel side and prevent the discharge of iron ions.
In einem Speicher bildet die Speicherwand die Kathode, während der Magnesium-Stab die Anode bildet. Das Elektrolyd liegt in Form des Speicherwassers vor. Existieren Fehlstellen in der Emaille, wird durch das Abtragen des Magnesiums ein entgegengesetzter Strom überlagert, der die Abgabe der Eisenionen unterbindet. Die bei diesem Vorgang freiwerdenden OH–-Ionen verbinden sich mit dem im Wasser vorhandenen Härtebildnern m CaCO3 (Kalk), das sich über der Fehlstelle ablagert. Durch den kontinuierlichen Materialabtrag an der Anode ergibt sich deren Verschleiß (sog. Opferanode).In a storage tank, the storage wall forms the cathode, while the magnesium rod forms the anode. The electrolyd is in the form of the storage water. If there are defects in the enamel, the removal of the magnesium overlays an opposite current, which prevents the iron ions from being released. The OH - ions released during this process combine with the hardness-forming agent m CaCO 3 (lime) present in the water, which is deposited over the defect. The continuous removal of material from the anode results in its wear (so-called sacrificial anode).
Alternativ zu Opferanoden gibt es Fremdstromanoden, die aus Inertanoden aus nichtangreifbarem Material (z.B. Mischoxid-beschichtetes Titan, Magnetit) bestehen. Die Anode wird mit dem für den kathodischen Korrosionsschutz notwendigen Gleichstrom beaufschlagt. Durch einen kontinuierlichen Potentialabgleich wird eine gleichbleibender Schutzstrom im Behälter aufrecht erhalten, der eine Abgabe von Eisenionen verhindert.There are alternatives to sacrificial anodes External current anodes, made of inert anodes made of non-attackable material (e.g. mixed oxide coated titanium, magnetite). The anode is with the for the necessary direct current is applied to the cathodic corrosion protection. Continuous equipotential bonding makes it more constant Protective current in the container that prevents the release of iron ions.
Für die normalerweise für Warmwasserspeicher verwendeten unlegierten Eisenwerkstoffe beträgt das erforderliche Schutzpotential 530 mV, bezogen auf die Normalwasserstoffelektrode. Unterhalb dieses Wertes findet fast kein Eisenabtrag mehr statt.For which is usually for Unalloyed iron materials used in hot water storage tanks is the required Protection potential 530 mV, based on the normal hydrogen electrode. Below this value, there is almost no iron removal.
Gemäß dem Stand der Technik kann die Funktionsweise von Opferanoden mit einem Analog-Meßinstrument überprüft werden. Braucht sich die Opferanode auf, so reduziert sich der Schutzstrom. Anhand des batteriebetriebenen Meßinstruments, das bei einem Schutzstrom von <0,3 mA ein optisches Signal in Form eines leuchtenden LEDs zeigt, kann mehr oder minder subjektiv entschieden werden, ob ein Anodenwechsel notwendig ist. Bei üblichen Anoden-Testern besteht die Gefahr, dass eine verbrauchte Anode nicht rechtzeitig erkannt wird, da die Messinstrumente nur bei der üblichen Wartung eingesetzt werden.According to the prior art the functioning of sacrificial anodes can be checked with an analog measuring instrument. If the sacrificial anode is used up, the protective current is reduced. Using the battery-powered measuring instrument, which is used in a Protective current of <0.3 mA shows an optical signal in the form of a glowing LED more or less subjectively decided whether an anode change necessary is. With usual Anode testers run the risk that a used anode will not is recognized in time, since the measuring instruments are only used in the usual Maintenance.
Der Erfindung liegt die Aufgabe zugrunde, ein Vorrichtung zu schaffen, die selbsttätig dauerhaft die Notwendigkeit eines Anodenwechsels anzeigt.The invention is based on the object To create device that automatically permanently the need indicates an anode change.
Diese Aufgabe wird gemäß den Merkmalen des Anspruchs 1 dadurch gelöst, dass der Strom zwischen Opferanode und Speicherbehälter dauerhaft gemessen und mit einem Grenzwert verglichen wird, wobei bei Unterschreitung des Grenzwertes ein Signal, das auf den fortgeschrittenen Verschleiß hinweist, ausgegeben wird.This task is performed according to the characteristics of the Claim 1 solved that the current between the sacrificial anode and the storage tank is measured continuously and is compared with a limit value, whereby if the value is undershot of the limit value a signal that indicates the advanced wear, is issued.
Gemäß den Merkmalen des Anspruchs 2 wird geschützt, dass die Überwachungsmessung sowohl permanent, als auch temporär erfolgen kann.According to the features of the claim 2 is protected that surveillance measurement can be done both permanently and temporarily.
Durch die Merkmale des Anspruchs 3 werden vorteilhafte Grenzwerte für eine erfindungsgemäße Überwachungseinrichtung geschützt.By the features of the claim 3 are advantageous limit values for a monitoring device according to the invention protected.
Gemäß den Merkmalen des Anspruchs 4 ergibt sich der Vorteil, dass im Falle des Vorliegens des optimalen Betriebs der Opferanode ein entsprechendes Signal ausgegeben wird. Äquivalent ergibt sich gemäß den Merkmalen des Anspruchs 5 der Vorteil, dass beim Vorliegen von Indizien eines fortgeschrittenen Verschleißes der Opferanode ein entsprechendes Signal ausgegeben wird.According to the features of the claim 4 there is the advantage that in the event of the optimal Operation of the sacrificial anode, a corresponding signal is output. equivalent to arises according to the characteristics of claim 5 the advantage that when there is evidence, a advanced wear a corresponding signal is output to the sacrificial anode.
Durch die Merkmale des Anspruchs 6 werden vorteilhafte Formen des Ausgabesignals geschützt.By the features of the claim 6 advantageous forms of the output signal are protected.
Gemäß den Merkmalen des Anspruchs 7 ergibt sich der Vorteil, dass die Information des Vorliegen von Indizien eines fortgeschrittenen Verschleißes der Opferanode z.B. über Telefonleitung und / oder Internet weitergeleitet werden kann, um beispielsweise einen Installateur zu benachrichtigen, der dann den Austausch der Opferanode vornehmen kann.According to the features of claim 7, there is the advantage that the information about the presence of evidence of advanced wear ßes the sacrificial anode can be forwarded, for example, via telephone line and / or the Internet, for example to notify an installer who can then carry out the exchange of the sacrificial anode.
Die Erfindung wird nun anhand der folgenden Zeichnungen detailliert erläutert. Hierbei zeigen:The invention is now based on the following drawings explained in detail. Here show:
In einem Warmwasser-Speicherbehälter
So kann beispielsweise, solange sich der Meßwert im Sollbereich befindet, eine grüne Leuchtdiode angesteuert werden. Wird der Grenzwert unterschritten, so wird die grüne Leuchtdiode ausgeschaltet und eine rote Leuchtdiode eingeschaltet. Optional ertönt ein Warnton und / oder über ein Modem und das Internet wird der Fachhandwerker benachrichtigt.For example, as long as the measured value is in the target area, a green one LED can be controlled. If the limit is undershot, so the green one LED switched off and a red LED switched on. optional sounds a warning tone and / or over a modem and the Internet will be notified to the contractor.
Die Schaltungseinrichtung
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE102004004064.8A DE102004004064B4 (en) | 2003-01-29 | 2004-01-20 | Device for monitoring the consumption of a sacrificial anode |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10303550.8 | 2003-01-29 | ||
DE10303550 | 2003-01-29 | ||
AT1212/2003 | 2003-07-31 | ||
AT12122003 | 2003-07-31 | ||
DE102004004064.8A DE102004004064B4 (en) | 2003-01-29 | 2004-01-20 | Device for monitoring the consumption of a sacrificial anode |
Publications (2)
Publication Number | Publication Date |
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DE102004004064A1 true DE102004004064A1 (en) | 2004-08-12 |
DE102004004064B4 DE102004004064B4 (en) | 2017-04-13 |
Family
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DE102004004064.8A Expired - Fee Related DE102004004064B4 (en) | 2003-01-29 | 2004-01-20 | Device for monitoring the consumption of a sacrificial anode |
Country Status (1)
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004056066B4 (en) * | 2004-11-12 | 2008-11-27 | Jan Schmidt | Water treatment device for a water pipe system |
DE102008013943A1 (en) | 2008-03-12 | 2009-09-17 | Stiebel Eltron Gmbh & Co. Kg | Hot water tank, has anode isolated to enamelled container, where change of anode current is determined based on comparison of anode current with absolute upper threshold value, absolute lower threshold value and/or relative threshold value |
CN103512187A (en) * | 2012-06-20 | 2014-01-15 | 何刚 | Electronic anticorrosion system of electric water heater |
CN104833081A (en) * | 2015-05-25 | 2015-08-12 | 山东新基德电器有限公司 | Water heater having anode bar loss detection prompting function and control method thereof |
DE202014007689U1 (en) * | 2014-09-25 | 2016-01-08 | Stiebel Eltron Gmbh & Co. Kg | Domestic appliance, especially hot water tank |
DE102015016247B3 (en) * | 2015-12-16 | 2017-04-13 | Stiebel Eltron Gmbh & Co. Kg | heater |
CN110470058A (en) * | 2019-07-31 | 2019-11-19 | 青岛经济技术开发区海尔热水器有限公司 | A kind of water heater and its detection device and method |
EP3683519A1 (en) | 2019-01-19 | 2020-07-22 | Stiebel Eltron GmbH & Co. KG | Warm water device and method for operating a warm water device |
DE102019000389A1 (en) | 2019-01-19 | 2020-07-23 | Stiebel Eltron Gmbh & Co. Kg | Hot water device and method for operating a hot water device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020100808A1 (en) | 2020-01-15 | 2021-07-15 | Stiebel Eltron Gmbh & Co. Kg | Method for determining the condition of a sacrificial anode in a water storage tank |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10145575A1 (en) * | 2001-09-15 | 2003-04-03 | Electolux Haustechnik Gmbh | Hot water tank has arrangement for detecting current between container, object in container, preventing heater from switching on, switching off and/or outputting signal if no/too little current |
-
2004
- 2004-01-20 DE DE102004004064.8A patent/DE102004004064B4/en not_active Expired - Fee Related
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004056066B4 (en) * | 2004-11-12 | 2008-11-27 | Jan Schmidt | Water treatment device for a water pipe system |
DE102008013943A1 (en) | 2008-03-12 | 2009-09-17 | Stiebel Eltron Gmbh & Co. Kg | Hot water tank, has anode isolated to enamelled container, where change of anode current is determined based on comparison of anode current with absolute upper threshold value, absolute lower threshold value and/or relative threshold value |
DE102008013943B4 (en) | 2008-03-12 | 2018-09-13 | Stiebel Eltron Gmbh & Co. Kg | Hot water storage and test device for testing an anode in a hot water tank |
CN103512187A (en) * | 2012-06-20 | 2014-01-15 | 何刚 | Electronic anticorrosion system of electric water heater |
CN103512187B (en) * | 2012-06-20 | 2016-06-01 | 何刚 | Electronic anticorrosion system of electric water heater |
DE202014007689U1 (en) * | 2014-09-25 | 2016-01-08 | Stiebel Eltron Gmbh & Co. Kg | Domestic appliance, especially hot water tank |
CN104833081A (en) * | 2015-05-25 | 2015-08-12 | 山东新基德电器有限公司 | Water heater having anode bar loss detection prompting function and control method thereof |
DE102015016247B3 (en) * | 2015-12-16 | 2017-04-13 | Stiebel Eltron Gmbh & Co. Kg | heater |
EP3683519A1 (en) | 2019-01-19 | 2020-07-22 | Stiebel Eltron GmbH & Co. KG | Warm water device and method for operating a warm water device |
DE102019000378A1 (en) | 2019-01-19 | 2020-07-23 | Stiebel Eltron Gmbh & Co. Kg | Hot water device and method for operating a hot water device |
DE102019000389A1 (en) | 2019-01-19 | 2020-07-23 | Stiebel Eltron Gmbh & Co. Kg | Hot water device and method for operating a hot water device |
CN110470058A (en) * | 2019-07-31 | 2019-11-19 | 青岛经济技术开发区海尔热水器有限公司 | A kind of water heater and its detection device and method |
Also Published As
Publication number | Publication date |
---|---|
DE102004004064B4 (en) | 2017-04-13 |
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