EP0357925B1 - Opferanode mit Verbrauchsanzeige und Eisenseele für Wasserbehälter und Warmwasserbereiter - Google Patents

Opferanode mit Verbrauchsanzeige und Eisenseele für Wasserbehälter und Warmwasserbereiter Download PDF

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Publication number
EP0357925B1
EP0357925B1 EP89113543A EP89113543A EP0357925B1 EP 0357925 B1 EP0357925 B1 EP 0357925B1 EP 89113543 A EP89113543 A EP 89113543A EP 89113543 A EP89113543 A EP 89113543A EP 0357925 B1 EP0357925 B1 EP 0357925B1
Authority
EP
European Patent Office
Prior art keywords
anode
sleeve
water
iron core
container
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.)
Expired - Lifetime
Application number
EP89113543A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0357925A1 (de
Inventor
Ludwig 1Hössle
Franz Dr.-Ing. Wallner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stiebel Eltron GmbH and Co KG
Original Assignee
Hossle Sibylle
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hossle Sibylle filed Critical Hossle Sibylle
Priority to AT89113543T priority Critical patent/ATE72841T1/de
Publication of EP0357925A1 publication Critical patent/EP0357925A1/de
Application granted granted Critical
Publication of EP0357925B1 publication Critical patent/EP0357925B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • 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
    • F24H9/0005—Details for water 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
    • 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

Definitions

  • the invention relates to a sacrificial anode with consumption indicator and iron core for water tanks and water heaters, in which after its consumption in a sleeve-shaped fastening means attached to a container wall, water penetrates a piston-like signal pin as a consumption indicator to a part of the container contour.
  • the display means a displaceable signal pin
  • the display means is displaced after the consumption of the signal anode by penetrated water which is subject to the container operating pressure in such a way that it appears on the outer wall of the container.
  • the signal pin must have a sufficient seal to prevent water from escaping from the container, but it must also be easily displaceable so that it can also be effective in containers with a lower operating pressure.
  • the signal pen To make it easier to see when the consumption is being displayed, the signal pen must have a striking color.
  • the signal pin can be manipulated when the anodes have not yet been used and can thus be pulled out as a mark of an anode that is also used up, or vice versa, for a playful occasion when the anode is used up is pushed in.
  • the signal pin - instead of jumping out again due to the tank pressure - can be blocked by the sealing rings.
  • the principle of the consumption display by means of an outstanding signal pin visible on the container corresponds to the economy required for commercial companies when determining consumption.
  • the production of such an anode with signal pin is complicated because of the additional adjustment required after assembly.
  • Sacrificial anodes are usually equipped with an iron core from one end to the other when they are manufactured by extrusion or casting. It serves to hold the anodic material together during the removal process so that fragments of the anodic material do not fall into the container.
  • a blind hole When equipping such sacrificial anodes with a consumption display, a blind hole must be drilled on one end of the anode. For this purpose, part of the iron core must be drilled out, either simultaneously with the diameter of the blind hole or through successive bores. Drilling out the iron soul is difficult and time-consuming in any case. The hole is of limited length so that the effects of the iron soul as cohesion of the anodic material are not canceled. For special applications, it is therefore not possible to make a blind hole that almost completely penetrates the anode axially.
  • the invention has for its object, while maintaining the appearing on the outer wall of the container analog shaped display means the disadvantages listed to avoid and to arrange an iron core so that an almost completely penetrating axial blind hole can be introduced.
  • This object is achieved in that at the end of the sleeve-shaped fastening means projecting from the anode and the container there is arranged a container-like, transparent hollow body filled with chemical agents which change into another color when water is admitted, in such a way that in the sleeve-shaped fastening means Penetrated water penetrates into the container-like, transparent hollow body, and in that the sleeve-shaped fastening means and an axially adjoining blind hole of the anode are filled with a wick - from the bag-like end of the blind hole to the transparent hollow body - with a wick, and in that the iron core in it Longitudinal extension outside the anode axis and parallel to this is arranged in the anode.
  • the container-like, transparent hollow body advantageously contains commercially available silica gel as a filling, which changes from blue to pink after the entry of water, and an admixture of a commercially available inorganic pigment, as a result of which the gel turns red when water is entered.
  • a sacrificial anode consist, in particular, in that instead of a signal-red cartridge, which is pushed out to a part of its length and which is conveniently colored red, when the consumption is indicated by means of the container operating pressure from the container contour and its storage within the sleeve-shaped fastening means, a color-change cartridge is arranged so as to be non-displaceable and with the sleeve-shaped Fasteners are tight, tight and screwed together in alignment.
  • a consumption display is caused by a color change to red as a result of water that has penetrated the color change cartridge and the chemical agent filled in, and there are no moving parts in operation, and the color change cartridge is rigidly arranged on the outer wall of the container, manipulations of the respective display status are - not used Consumption or from consumption to non-consumption - the anode is not possible. As a result, and for other reasons, no blockage and leakage can occur in parts involved in the display process. Since the dimensions of the color change cartridge are not dependent on the minimum dimensions of movement and drilling, as is the case with a signal pen, the length and diameter of the color change cartridge can be larger in favor of better, striking recognizability of the red-colored front and outer surface when anodes are used exhibit.
  • the sleeve-shaped fastening means and the subsequent axial blind bore of the anode are filled with a continuous wick.
  • the wick can have a wire core for easy insertion during assembly.
  • the water that has penetrated is safely conveyed up to and into the color change cartridge, the latter made possible by an end face bore in the space of the socket-like screw thread and favored by shortening this hole by means of a conical shape of this end face on the filled one chemical agent facing surface.
  • the wick that fills the water supply and displaces the air to a high degree enables a further testing process that could not be carried out with previously known sacrificial anodes with consumption indicators.
  • sacrificial anodes with consumption indicators.
  • When in operation taken water containers in addition to the usual hairline cracks on the inside of the enamelling that have long been manageable by known sacrificial anodes, there are also flat imperfections, which may have been present before commissioning. Such imperfections cause diametrically greater material removal at the anode. If there is a fault in the area of the protective cap and the blind hole ending behind it, there is still an accelerated material removal and consumption display. The existing intention to replace such containers prematurely is hereby automatically indicated as required.
  • a diametrical removal of material on the anode penetrates the anode accelerated, for example in the sense of a cross section, in such a way that part of the anode falls into the container if the iron core does not cover the entire length of the anode.
  • Such imperfections can also be controlled by a blind hole reaching almost to the end of the anode, in that a suitably long wick fills the blind hole and the sleeve-shaped fastening means and causes the air to be displaced and the water to be penetrated to be conveyed.
  • the iron core is arranged outside the anode axis and parallel to it in the anode.
  • the parts which are arranged in the anode and protrude into it are cast in the casting process, advantageously the mold casting process, and after assembly as an integral casting in the anode.
  • a cast core is inserted into the sleeve-shaped fastening means for making short or long blind holes in the anode.
  • the iron core can be varied as required. If a central arrangement of the iron core in the anode is desired when producing anodes with a short, normal blind bore, an iron core is used, the upper end of which is returned to the anode axis via a z-shaped double bend immediately after the end of the blind bore.
  • the joining of the iron core and the sleeve-shaped fastening means takes place by means of a closing and retaining ring which can conveniently be plugged or screwed onto the sleeve-shaped fastening means and into which one end face the iron core is inserted, whereas the other end face together with the anode provides a flush, flush termination of the anode forms.
  • the sacrificial anode with consumption indicator according to FIG. 1 is screwed onto the container wall 8 by means of a sleeve-shaped fastening means 6 and a screw nut 9 and underlaying a sealing washer 10 between the anode 1 and the container wall 8.
  • the sleeve-shaped fastening means 6, a closing and retaining ring 5 and the iron core 4 are arranged as an assembled casting.
  • part of the fastening means 6 protrudes from the anode 1.
  • the iron core 4 is introduced with the help of the finishing and catering 5 outside the anode axis and parallel to it.
  • the long blind bore 3a is shown in FIG. 1 for clarity without a wick 7 and the blind bore 3 with a wick 7.
  • the anode 1 has a protective cap 2 on its fastening end face and adjacent lateral surface.
  • the sleeve-shaped fastening means 6 and the subsequent blind hole 3 are filled together with a continuous wick 7.
  • the color change cartridge 12, 13 is screwed onto the outer end of the sleeve-shaped fastening means 6.
  • the water penetrating through the blind hole 3 or 3a when the anode 1 is used up passes through the wick 7, which is alternatively contained in each blind hole, into the color change cartridge 12, 13.
  • FIG. 2 shows the anode 1 along the line A-B in FIG. 1 in cross section and primarily indicates the position of the iron core 4 on the end and retaining ring 5 and in comparison to the anode axis.
  • the protective cap 2 is only shown as part of the circle.
  • the wick 7 is omitted for the sake of illustration.
  • the color change cartridge 12, 13 in FIG. 3, shown as an enlarged detail from FIG. 1, makes the supply of water via the wick 7 within the sleeve-shaped fastening means 6 to the filled chemical agent 14 can be seen.
  • the wick 7 still extends over a seal 11 and a corresponding opening in the upper end of the filling space to approximately the filled chemical agent 14. Due to the conical design of the underside of the upper end, the compactly filled chemical agent 14 is as close to the wick as possible 7 brought up and the breakthrough as short as possible, so that parts of the end of the wick can also be guided to the granular chemical agent 14.
  • the color change cartridge is filled on the manufacturing side with the means 14 and then closed at the filling opening of its transparent, cylindrical hollow body 12 with a hollow body cover 13.
  • the color change cartridge is screwed onto the free end of the sleeve-shaped fastening means 6 by means of a sleeve-like internal thread on the end face opposite the hollow body cover 13. If a color change cartridge that is already in use is damaged, the latter can be easily replaced after unscrewing the anode 1.
  • the walls of the cylindrical hollow body 12 and the hollow body cover 13, in particular the end face of the cover, are kept relatively thin in favor of high transparency.

Landscapes

  • 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)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Irons (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
  • Prevention Of Electric Corrosion (AREA)
  • Cookers (AREA)
  • Coating Apparatus (AREA)
EP89113543A 1988-08-04 1989-07-24 Opferanode mit Verbrauchsanzeige und Eisenseele für Wasserbehälter und Warmwasserbereiter Expired - Lifetime EP0357925B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89113543T ATE72841T1 (de) 1988-08-04 1989-07-24 Opferanode mit verbrauchsanzeige und eisenseele fuer wasserbehaelter und warmwasserbereiter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3826760 1988-08-04
DE3826760A DE3826760C1 (enExample) 1988-08-04 1988-08-04

Publications (2)

Publication Number Publication Date
EP0357925A1 EP0357925A1 (de) 1990-03-14
EP0357925B1 true EP0357925B1 (de) 1992-02-26

Family

ID=6360360

Family Applications (2)

Application Number Title Priority Date Filing Date
EP89113543A Expired - Lifetime EP0357925B1 (de) 1988-08-04 1989-07-24 Opferanode mit Verbrauchsanzeige und Eisenseele für Wasserbehälter und Warmwasserbereiter
EP89908828A Pending EP0381738A1 (de) 1988-08-04 1989-07-24 Opferanode mit verbrauchsanzeige und eisenseele für wasserbehälter und warmwasserbereiter

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP89908828A Pending EP0381738A1 (de) 1988-08-04 1989-07-24 Opferanode mit verbrauchsanzeige und eisenseele für wasserbehälter und warmwasserbereiter

Country Status (7)

Country Link
EP (2) EP0357925B1 (enExample)
AT (1) ATE72841T1 (enExample)
AU (1) AU4037689A (enExample)
DD (1) DD287060A5 (enExample)
DE (2) DE3826760C1 (enExample)
RU (1) RU1787173C (enExample)
WO (1) WO1990001571A1 (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2141757A1 (en) * 1994-03-25 1995-09-26 Lawrence E. Cooper, Jr. Sacrificial anode and associate probe
CN107648924A (zh) * 2017-11-03 2018-02-02 中船黄埔文冲船舶有限公司 一种防腐滤器装置
ES2794223A1 (es) * 2019-05-17 2020-11-17 Guadalupe Francisco Pelluz Dispositivo para proteccion galvanica

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2726205A (en) * 1952-09-02 1955-12-06 Dearborn Stove Company Anode deterioration indicator for water heaters
FR1264516A (fr) * 1960-05-09 1961-06-23 Dispositif pour détecter et déterminer la quantité d'eau en suspension dans les liquides non miscibles
GB1116183A (en) * 1965-03-18 1968-06-06 Cav Ltd A method and apparatus for indicating the presence of water in a fuel system
US4051007A (en) * 1975-10-06 1977-09-27 Ludwig Hossle Sacrificial anodes for cathodic protection
DE3000944A1 (de) * 1980-01-10 1981-07-16 Ludwig 1000 Berlin Hössle Opferanorde mit beidendiger verbrauchsanzeige und/oder beidendigem universalbefestigungsmittel
AT390968B (de) * 1987-09-28 1990-07-25 Rapido Waermetechnik Gmbh Als signalgeber dienende anode

Also Published As

Publication number Publication date
DE3826760C1 (enExample) 1989-07-06
EP0357925A1 (de) 1990-03-14
ATE72841T1 (de) 1992-03-15
WO1990001571A1 (de) 1990-02-22
AU4037689A (en) 1990-03-05
DD287060A5 (de) 1991-02-14
DE58900861D1 (de) 1992-04-02
RU1787173C (ru) 1993-01-07
EP0381738A1 (de) 1990-08-16

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