EP2298963B1 - Container boiler with double cathodic protection - Google Patents
Container boiler with double cathodic protection Download PDFInfo
- Publication number
- EP2298963B1 EP2298963B1 EP10175913.2A EP10175913A EP2298963B1 EP 2298963 B1 EP2298963 B1 EP 2298963B1 EP 10175913 A EP10175913 A EP 10175913A EP 2298963 B1 EP2298963 B1 EP 2298963B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- anode
- water heater
- sacrificial anode
- sacrificial
- imposed current
- 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.)
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- 238000004210 cathodic protection Methods 0.000 title claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 46
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 16
- 229910052719 titanium Inorganic materials 0.000 claims description 16
- 239000010936 titanium Substances 0.000 claims description 16
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 15
- 229910052749 magnesium Inorganic materials 0.000 claims description 14
- 239000011777 magnesium Substances 0.000 claims description 14
- 229920001971 elastomer Polymers 0.000 claims description 9
- 239000000806 elastomer Substances 0.000 claims description 9
- 239000004020 conductor Substances 0.000 claims description 5
- 230000010287 polarization Effects 0.000 claims description 2
- 238000009825 accumulation Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 150000003608 titanium Chemical class 0.000 description 1
Images
Classifications
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- 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
-
- 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
- C23F13/10—Electrodes characterised by the structure
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- 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
- C23F13/18—Means for supporting electrodes
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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
- F24D19/0092—Devices for preventing or removing corrosion, slime or scale
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- 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
- F24H1/18—Water-storage heaters
- F24H1/185—Water-storage heaters using electric energy 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
- 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
- C23F2213/00—Aspects of inhibiting corrosion of metals by anodic or cathodic protection
- C23F2213/20—Constructional parts or assemblies of the anodic or cathodic protection apparatus
- C23F2213/21—Constructional parts or assemblies of the anodic or cathodic protection apparatus combining at least two types of anodic or cathodic protection
Definitions
- the invention relates to an electric storage water heater with double cathodic protection.
- cathodic protection Two types of cathodic protection are known for ensuring the protection of an electric storage water heater against corrosion: either cathodic protection using a sacrificial anode such as a magnesium anode, or cathodic protection using a permanent impressed current anode.
- the magnesium anode needs to be replaced periodically when it reaches the end of consumption, while the impressed current anode needs to be constantly supplied by an electrical power source to ensure cathodic protection.
- the document WO 2007/010 335 describes an electric storage water heater with adjustable cathodic protection.
- This electric storage water heater is protected against corrosion under normal operating conditions and power supply by a permanent impressed current electrode, while the water heater is protected in the absence of supply by a sacrificial anode .
- the sacrificial anode is electrically connected to the tank of the water heater by a switch intended to interrupt the electrical connection when the power supply supplies said permanent electrode with impressed current.
- This device is generally satisfactory, but in fact requires disconnecting the sacrificial anode in the event of an electrical supply, to avoid excessive consumption.
- a first object of the invention is to improve the known state of the art, by proposing a new electric storage water heater with double cathodic protection, which does not require disconnecting the sacrificial anode in the event of any electrical supply. avoiding excessive consumption.
- a second object of the invention is to provide cathodic protection of an electric storage water heater, even by using a supply system during off-peak hours involving an absence of supply for long periods of the order of 16 hours.
- the subject of the invention is a double cathodic protection storage water heater according to claim 1, comprising a sacrificial anode and an impressed current anode, characterized in that the sacrificial anode surrounds the impressed current anode and has a conformation capable of avoiding any contact of the impressed current anode with the water from the tank of the electric water heater, before consumption of the sacrificial anode, the impressed current anode being in electrical contact with the sacrificial anode .
- an electric storage water heater generally designated by (1) comprises a tank of a holding sheath (3), a voltage generator (4), a sacrificial anode (5), an impressed current anode (6) .
- the cathodic polarization electric circuit comprises the sacrificial anode (5) in electrical contact with the impressed current anode (6) made for example of titanium.
- the mounting of the sacrificial magnesium anode (5) and of the titanium impressed current anode (6) on the holding sheath (3) is carried out by one of the insulating holding means (8) which are described in detail. with reference to the figure 2 .
- An insulated supply conductor (9) and an insulated conductor (10) connecting to the tank (2) of the water heater (1) are provided for connecting the generator (4) of protective current to the electric water heater. accumulation (1).
- the sacrificial anode (5) made of magnesium has a recess for mounting the anode (6) with impressed current in titanium, so as to almost entirely drown the anode (6) in titanium inside the anode ( 5) magnesium.
- the titanium anode (6) is mounted on the support (3) using an insulating and flexible sleeve, for example made of elastomer, on the outer periphery of the retaining sheath (3).
- the space inside the elastomer sleeve (8) is connected to the atmosphere inside the insulating support (3), without any contact with the water filling the tank of the water heater.
- the magnesium sacrificial anode (5) is mounted on the insulating support or retaining sheath (3) by means of an elastomer insulating sleeve disposed on the periphery of the insulating support (3).
- the space between the elastomeric sleeves is isolated from the water in the tank of the water heater, because the radially outer sleeve completely surrounds the upper end of the retaining sheath (3) carrying the elastomeric sleeve (8).
- the externally insulated electrical conductor (9) is connected to the titanium impressed current anode (6) so that the titanium impressed current anode (6) can be constantly supplied during periods of power supply to the titanium. electric storage water heater.
- the titanium impressed current anode (6) is not in contact with the water in the water heater, and the current flowing through this titanium impressed current anode can only be evacuated through the magnesium sacrificial anode (5). Because the general diameter and dimensions of the sacrificial anode (5) of magnesium are much larger than the diameter and dimensions of the impressed current anode (6) of titanium, the current densities passing through the anode in magnesium are much lower than those crossing the titanium anode.
- the contribution of the cathodic bias current makes it possible to slightly increase the electrochemical protective current which is established naturally between the sacrificial magnesium anode (5) and the tank (2) of the electric storage water heater, in thereby enhancing the effect.
- the electric storage water heater is constantly protected, even in the case of a power supply interrupted over time, using only the off-peak supply.
- the operation of the electric water heater according to the invention is thus practically identical to the operation of an electric water heater of the prior art protected only by a sacrificial anode of magnesium.
- the magnesium sacrificial anode has been practically consumed.
- the space between the sleeves is then filled at least partially with the water inside the tank of the water heater, and the impressed current anode (6) made of titanium is at least partially in contact with water from the water heater.
- the operation of the electric water heater according to the invention is identical to the operation of a prior art electric storage water heater equipped with an impressed current anode made of titanium.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Prevention Of Electric Corrosion (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Description
L'invention est relative à un chauffe-eau électrique à accumulation à double protection cathodique.The invention relates to an electric storage water heater with double cathodic protection.
On connaît deux sortes de protections cathodiques pour assurer la protection d'un chauffe-eau électrique à accumulation contre la corrosion : soit la protection cathodique utilisant une anode sacrificielle comme une anode en magnésium, soit la protection cathodique utilisant une anode permanente à courant imposé.Two types of cathodic protection are known for ensuring the protection of an electric storage water heater against corrosion: either cathodic protection using a sacrificial anode such as a magnesium anode, or cathodic protection using a permanent impressed current anode.
L'anode en magnésium nécessite d'être remplacée périodiquement lorsqu'elle arrive en fin de consommation, tandis que l'anode à courant imposé nécessite d'être constamment alimentée par une source d'alimentation électrique pour assurer la protection cathodique.The magnesium anode needs to be replaced periodically when it reaches the end of consumption, while the impressed current anode needs to be constantly supplied by an electrical power source to ensure cathodic protection.
Le document
Ce dispositif donne généralement satisfaction, mais nécessite en effet de déconnecter l'anode sacrificielle en cas d'alimentation électrique, pour éviter sa consommation excessive.This device is generally satisfactory, but in fact requires disconnecting the sacrificial anode in the event of an electrical supply, to avoid excessive consumption.
Un premier but de l'invention est d'améliorer l'état de la technique connu, en proposant un nouveau chauffe-eau électrique à accumulation à double protection cathodique, ne nécessitant pas de déconnecter l'anode sacrificielle en cas d'alimentation électrique tout en en évitant la consommation excessive.A first object of the invention is to improve the known state of the art, by proposing a new electric storage water heater with double cathodic protection, which does not require disconnecting the sacrificial anode in the event of any electrical supply. avoiding excessive consumption.
Un deuxième but de l'invention est d'assurer la protection cathodique d'un chauffe-eau électrique à accumulation, même en utilisant un système d'alimentation par heures creuses impliquant une absence d'alimention pendant des durées importantes de l'ordre de 16 heures.A second object of the invention is to provide cathodic protection of an electric storage water heater, even by using a supply system during off-peak hours involving an absence of supply for long periods of the order of 16 hours.
L'invention a pour objet un chauffe-eau à accumulation à double protection cathodique selon la revendication 1, comportant une anode sacrificielle et une anode à courant imposé, caractérisé par le fait que l'anode sacrificielle entoure l'anode à courant imposé et présente une conformation apte à éviter tout contact de l'anode à courant imposé avec l'eau de la cuve du chauffe-eau électrique, avant consommation de l'anode sacrificielle, l'anode à courant imposé étant en contact électrique avec l'anode sacrificielle.The subject of the invention is a double cathodic protection storage water heater according to
Selon d'autres caractéristiques alternatives de l'invention :
- l'anode sacrificielle comporte un chambrage pour monter l'anode à courant imposé.
- l'anode sacrificielle est montée sur un support ou une gaine de maintien par l'intermédiaire d'un manchon élastomère.
- l'anode à courant imposé est montée sur un support ou une gaine de maintien par l'intermédiaire d'un manchon élastomère.
- le manchon élastomère de l'anode sacrificielle entoure le manchon élastomère de l'anode à courant imposé.
- les dimensions de l'anode sacrificielle sont notablement supérieures aux dimensions de l'anode à courant imposé.
- les anodes sacrificielle et à courant imposé présentent des conformations sensiblement cylindriques.
- le diamètre de l'anode sacrificielle est notablement supérieur au diamètre de l'anode à courant imposé.
- l'anode à courant imposé est en titane et l'anode sacrificielle est en magnésium :
L'invention sera mieux comprise grâce à la description qui va suivre donnée à titre d'exemple non limitatif en référence aux dessins annexés dans lesquels :- La
figure 1 représente schématiquement un chauffe-eau électrique à accumulation selon l'invention. - La
figure 2 représente schématiquement une vue partielle agrandie illustrant le dispositif de protection cathodique du chauffe-eau électrique à accumulation de lafigure 1 . - La
figure 3 représente schématiquement une vue partielle analogue à lafigure 2 illustrant le fonctionnement de l'invention. - La
figure 4 représente schématiquement une vue partielle analogue auxfigures 2 et 3 illustrant le fonctionnement de l'invention après consommation de l'anode sacrificielle.
- La
- the sacrificial anode has a recess for mounting the impressed current anode.
- the sacrificial anode is mounted on a support or a retaining sheath by means of an elastomeric sleeve.
- the impressed current anode is mounted on a support or a retaining sheath by means of an elastomeric sleeve.
- the elastomeric sleeve of the sacrificial anode surrounds the elastomeric sleeve of the impressed current anode.
- the dimensions of the sacrificial anode are significantly greater than the dimensions of the impressed current anode.
- the sacrificial and impressed current anodes have substantially cylindrical conformations.
- the diameter of the sacrificial anode is significantly greater than the diameter of the impressed current anode.
- the impressed current anode is made of titanium and the sacrificial anode is made of magnesium:
The invention will be better understood thanks to the description which follows given by way of nonlimiting example with reference to the appended drawings in which:- The
figure 1 shows schematically an electric storage water heater according to the invention. - The
figure 2 shows schematically an enlarged partial view illustrating the cathodic protection device of the electric storage water heaterfigure 1 . - The
figure 3 schematically represents a partial view similar to thefigure 2 illustrating the operation of the invention. - The
figure 4 schematically represents a partial view similar tofigures 2 and 3 illustrating the operation of the invention after consumption of the sacrificial anode.
- The
En référence aux
Sur la
Le circuit électrique de polarisation cathodique comporte l'anode sacrificielle (5) en contact électrique avec l'anode (6) à courant imposé réalisée par exemple en titane.The cathodic polarization electric circuit comprises the sacrificial anode (5) in electrical contact with the impressed current anode (6) made for example of titanium.
Le montage de l'anode (5) sacrificielle en magnésium et de l'anode (6) à courant imposé en titane sur la gaine (3) de maintien est effectué par un des moyens de maintien isolants (8) qui sont décrits en détail en référence à la
Un conducteur isolé (9) d'alimentation et un conducteur isolé (10) de liaison à la cuve (2) du chauffe-eau (1) sont prévus pour relier le générateur (4) de courant de protection au chauffe-eau électrique à accumulation (1).An insulated supply conductor (9) and an insulated conductor (10) connecting to the tank (2) of the water heater (1) are provided for connecting the generator (4) of protective current to the electric water heater. accumulation (1).
Sur la
L'anode (6) en titane est montée sur le support (3) de maintien à l'aide d'un manchon isolant et souple, par exemple en élastomère, sur le pourtour extérieur de la gaine (3) de maintien.The titanium anode (6) is mounted on the support (3) using an insulating and flexible sleeve, for example made of elastomer, on the outer periphery of the retaining sheath (3).
L'espace intérieur au manchon élastomère (8) est relié à l'atmosphère de l'intérieur du support isolant (3), sans aucun contact avec l'eau remplissant la cuve du chauffe-eau.The space inside the elastomer sleeve (8) is connected to the atmosphere inside the insulating support (3), without any contact with the water filling the tank of the water heater.
L'anode sacrificielle (5) en magnésium est montée sur le support isolant ou gaine de maintien (3) par l'intermédiaire d'un manchon isolant en élastomère disposé sur la périphérie du support isolant (3).The magnesium sacrificial anode (5) is mounted on the insulating support or retaining sheath (3) by means of an elastomer insulating sleeve disposed on the periphery of the insulating support (3).
Dans le cas d'une anode sacrificielle (5) neuve, l'espace compris entre les manchons élastomères est isolé de l'eau de la cuve du chauffe-eau, du fait que le manchon radialement extérieur entoure complètement l'extrémité supérieure de la gaine de maintien (3) portant le manchon élastomère (8).In the case of a new sacrificial anode (5), the space between the elastomeric sleeves is isolated from the water in the tank of the water heater, because the radially outer sleeve completely surrounds the upper end of the retaining sheath (3) carrying the elastomeric sleeve (8).
Le conducteur électrique (9) extérieurement isolé est raccordé à l'anode (6) à courant imposé en titane, de sorte que l'anode (6) à courant imposé en titane peut-être alimentée constamment lors des périodes d'alimentation électrique du chauffe-eau électrique à accumulation.The externally insulated electrical conductor (9) is connected to the titanium impressed current anode (6) so that the titanium impressed current anode (6) can be constantly supplied during periods of power supply to the titanium. electric storage water heater.
Sur la
Cependant, l'apport du courant de polarisation cathodique permet d'augmenter faiblement le courant électrochimique de protection qui s'établit naturellement entre l'anode sacrificielle en magnésium (5) et la cuve (2) du chauffe-eau électrique à accumulation, en en renforçant ainsi l'effet.However, the contribution of the cathodic bias current makes it possible to slightly increase the electrochemical protective current which is established naturally between the sacrificial magnesium anode (5) and the tank (2) of the electric storage water heater, in thereby enhancing the effect.
Ainsi, grâce à l'invention, le chauffe-eau électrique à accumulation est constamment protégé, même dans le cas d'une alimentation électrique interrompue dans le temps, en utilisant uniquement l'alimentation par heures creuses.Thus, thanks to the invention, the electric storage water heater is constantly protected, even in the case of a power supply interrupted over time, using only the off-peak supply.
Le fonctionnement du chauffe-eau électrique selon l'invention est ainsi pratiquement identique au fonctionnement d'un chauffe-eau électrique de l'art antérieur protégé uniquement par une anode sacrificielle en magnésium.The operation of the electric water heater according to the invention is thus practically identical to the operation of an electric water heater of the prior art protected only by a sacrificial anode of magnesium.
Sur la
Dans ce cas, le fonctionnement du chauffe-eau électrique selon l'invention est identique au fonctionnement d'un chauffe-eau électrique à accumulation de l'art antérieur équipé d'une anode à courant imposé en titane.In this case, the operation of the electric water heater according to the invention is identical to the operation of a prior art electric storage water heater equipped with an impressed current anode made of titanium.
Claims (9)
- An electric storage water heater (1) with double cathodic protection, including a cathodic polarization circuit comprising: a sacrificial anode (5) and- an anode (6) with imposed current in electrical contact with the sacrificial anode (5),- a tank (2),- a voltage generator (4), and- an insulated supply conductor (9) and an insulated connecting conductor (10) for connecting to the tank (2) in order to couple the voltage generator to the anode (6) with imposed current and to the tank (2), characterized in that the sacrificial anode (5) surrounds the anode (6) with imposed current such that the current passing through the anode (6) with imposed current can only be discharged through the sacrificial anode (5), and in that the sacrificial anode (5) has a configuration able to prevent any contact of the anode (6) with imposed current with the water of the tank (2) of the electric water heater (1), before consumption of the sacrificial anode (5).
- The water heater according to claim 1, characterized in that the anode (6) with imposed current is in electrical contact with the sacrificial anode (5).
- The water heater according to claim 1 or claim 2, characterized in that the sacrificial anode (5) includes a recess for mounting the anode (6) with imposed current.
- The water heater according to any one of the preceding claims, characterized in that the water heater further includes an elastomer sleeve as well as a support (3) or holding sheath, the sacrificial anode (5) being mounted on the support (3) or the holding sheath by means of the elastomer sleeve.
- The water heater according to any one of the preceding claims, characterized in that the water heater further includes an elastomer sleeve (8) as well as a support (3) or a holding sheath, the anode (6) with imposed current being mounted on the support (3) or the holding sheath by means of the elastomer sleeve (8).
- The water heater according to claims 4 and 5, characterized in that the elastomer sleeve of the sacrificial anode (5) surrounds the elastomer sleeve (8) of the anode (6) with imposed current.
- The water heater according to claim 1, characterized in that the dimensions of the sacrificial anode (5) are notably larger than the dimensions of the anode (6) with imposed current.
- The water heater according to claim 7, characterized in that the sacrificial anode (5) and the anode with imposed current (6) have substantially cylindrical configurations.
- The water heater according to any one of the preceding claims, characterized in that the anode (6) with imposed current is made from titanium and the sacrificial anode (5) is made from magnesium.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL10175913T PL2298963T3 (en) | 2009-09-16 | 2010-09-09 | Container boiler with double cathodic protection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0956357A FR2950081B1 (en) | 2009-09-16 | 2009-09-16 | WATER HEATER WITH DOUBLE CATHODIC PROTECTION ACCUMULATION |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2298963A2 EP2298963A2 (en) | 2011-03-23 |
EP2298963A3 EP2298963A3 (en) | 2017-02-15 |
EP2298963B1 true EP2298963B1 (en) | 2020-04-22 |
Family
ID=42211962
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10175913.2A Active EP2298963B1 (en) | 2009-09-16 | 2010-09-09 | Container boiler with double cathodic protection |
Country Status (10)
Country | Link |
---|---|
US (1) | US8649671B2 (en) |
EP (1) | EP2298963B1 (en) |
CN (1) | CN102022818B (en) |
EG (1) | EG26267A (en) |
ES (1) | ES2804353T3 (en) |
FR (1) | FR2950081B1 (en) |
PL (1) | PL2298963T3 (en) |
PT (1) | PT2298963T (en) |
RU (1) | RU2451882C1 (en) |
UA (1) | UA96093C2 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102162682A (en) * | 2011-04-29 | 2011-08-24 | 重庆欧凯电器有限公司 | Adjustable cathode protective water heater |
AU2015202488B2 (en) * | 2015-05-08 | 2021-08-26 | Rheem Australia Pty Limited | Improved Anode Support and or Locator Device and Method of Assembly |
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- 2009-09-16 FR FR0956357A patent/FR2950081B1/en not_active Expired - Fee Related
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2010
- 2010-09-09 ES ES10175913T patent/ES2804353T3/en active Active
- 2010-09-09 PL PL10175913T patent/PL2298963T3/en unknown
- 2010-09-09 EP EP10175913.2A patent/EP2298963B1/en active Active
- 2010-09-09 PT PT101759132T patent/PT2298963T/en unknown
- 2010-09-10 RU RU2010137646/06A patent/RU2451882C1/en not_active IP Right Cessation
- 2010-09-15 UA UAA201011100A patent/UA96093C2/en unknown
- 2010-09-16 CN CN2010102898656A patent/CN102022818B/en not_active Expired - Fee Related
- 2010-09-16 EG EG2010091562A patent/EG26267A/en active
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ES2804353T3 (en) | 2021-02-05 |
FR2950081A1 (en) | 2011-03-18 |
UA96093C2 (en) | 2011-09-26 |
PL2298963T3 (en) | 2020-11-30 |
EP2298963A3 (en) | 2017-02-15 |
CN102022818B (en) | 2013-06-05 |
FR2950081B1 (en) | 2011-12-09 |
CN102022818A (en) | 2011-04-20 |
RU2451882C1 (en) | 2012-05-27 |
EG26267A (en) | 2013-06-05 |
US20110064392A1 (en) | 2011-03-17 |
PT2298963T (en) | 2020-07-10 |
EP2298963A2 (en) | 2011-03-23 |
RU2010137646A (en) | 2012-03-20 |
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