EP1666809A1 - Dispositif de protection pour un accumulateur d'eau chaude - Google Patents

Dispositif de protection pour un accumulateur d'eau chaude Download PDF

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Publication number
EP1666809A1
EP1666809A1 EP05110337A EP05110337A EP1666809A1 EP 1666809 A1 EP1666809 A1 EP 1666809A1 EP 05110337 A EP05110337 A EP 05110337A EP 05110337 A EP05110337 A EP 05110337A EP 1666809 A1 EP1666809 A1 EP 1666809A1
Authority
EP
European Patent Office
Prior art keywords
temperature sensor
signal
current anode
signal transmission
heater
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
Application number
EP05110337A
Other languages
German (de)
English (en)
Other versions
EP1666809B1 (fr
Inventor
Ulrich Kroell
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1666809A1 publication Critical patent/EP1666809A1/fr
Application granted granted Critical
Publication of EP1666809B1 publication Critical patent/EP1666809B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • C23F13/04—Controlling or regulating desired parameters
    • 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 protective device for hot water storage according to the preamble of claim 1.
  • the anode current prevents the corrosion of the metallic bare wall areas of the storage tank without the foreign current anode in the storage water having to be used up and replaced.
  • the external current anode is connected to a power supply and has an independent evaluation, which provides information about the operating or maintenance state of the storage container to display elements, however, has no influence on the control of the storage heater.
  • a protective device for hot water storage in which an evaluation is provided for detecting the anode current, which is connected to a control device of the storage heater and transmitted in the absence of anode current a startup of the storage heater preventing blocking signal to the controller of the storage heater ,
  • the evaluation electronics can be accommodated both in a central electronics of the heater and in an independent evaluation of the foreign current anode.
  • the hot water tank also has at least one temperature sensor whose signal is also supplied to the central electronics of the control unit and via which the heat demand for the storage tank is determined. The signal transmission for the temperature sensor and for the external current anode is carried out in each case via separate signal lines which are guided from the storage container to the central electronics of the control unit arranged in the heater.
  • the object of the invention is to simplify the signal transmission between the storage unit and the heater, thereby reducing the system cost.
  • the object of the invention is achieved with the characterizing measures of claim 1. Due to the signal transmission of the signal of the external current anode via the signal line of the temperature sensor, only one signal line is necessary for the two signals from temperature sensor and external current probe.
  • FIG. 1 shows a schematic circuit arrangement of the protective device according to the invention.
  • a designated 10 heater has a controller 11 for controlling and / or regulating the heater 10 and a hot water storage unit 12.
  • the storage unit 12 has a storage tank 13, is stored in the hot process water, which is heated by a not shown charging circuit from the heater 10.
  • the known hydraulic connections of the heater 10 and the storage container 13 are not shown.
  • the memory unit 12 has a protective device with evaluation electronics 15, to which a third plug connection 16, an external current anode 17 and a second plug connection 18, an NTC temperature sensor 19 is connected.
  • evaluation electronics 15 also carries a signal transmission line 20 to the control unit 11 of the heater 10, wherein expediently on the control unit 11, a further connector 21 is provided for the signal transmission line 20.
  • the transmitter 15 is connected via a power supply line 22 to a power grid 23.
  • the evaluation electronics 15 furthermore have a circuit arrangement 25 with a resistor 26 and a switching part 27.
  • the circuit arrangement 25 is supplied with a signal line 28 of the temperature sensor 19, wherein the signal line 28 is led via the resistor 26 to the signal transmission line 20.
  • An anode current detecting means 30 is connected to the power supply line 22 and the foreign current anode 17 and to the switching part 27.
  • the switching part 27 is designed so that it short-circuits the signal line 28 to the signal transmission line 20 parallel to the resistor 26. If a failure or a faulty protective anode current is detected by the anode current detection device 30, the switching part 27 is actuated by means of suitable measures by the anode current detection device 30 and the short-circuited bridging of the signal line 28 to the signal transmission line 20 is opened so that the signal voltage of the temperature sensor 19 is influenced by the resistor 26. As a result, the signal voltage is changed in such a way that the control unit 11 detects a change in the signal voltage transmitted via the signal transmission line 20 as an interference function of the external current anode 17.
  • the function of the foreign current anode 17 is disturbed when there is no power supply or the protective effect of the external current anode is missing.
  • the circuit arrangement 25 drastically changes the signal of the temperature sensor 19, so that the central electronics of the control unit 11 detects the changed signal of the temperature sensor 19 as a noise signal of the foreign current anode 17.
  • the operator of the heater, a disturbed operation is signaled or by appropriate measures of the hot water charging operation, the memory unit 12 is turned off.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Details Of Fluid Heaters (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Farming Of Fish And Shellfish (AREA)
EP05110337A 2004-11-17 2005-11-04 Dispositif de protection pour un accumulateur d'eau chaude Not-in-force EP1666809B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004055261A DE102004055261B3 (de) 2004-11-17 2004-11-17 Schutzeinrichtung für einen Warmwasserspeicher

Publications (2)

Publication Number Publication Date
EP1666809A1 true EP1666809A1 (fr) 2006-06-07
EP1666809B1 EP1666809B1 (fr) 2007-10-10

Family

ID=35447958

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05110337A Not-in-force EP1666809B1 (fr) 2004-11-17 2005-11-04 Dispositif de protection pour un accumulateur d'eau chaude

Country Status (3)

Country Link
EP (1) EP1666809B1 (fr)
AT (1) ATE375485T1 (fr)
DE (2) DE102004055261B3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111051572A (zh) * 2017-09-07 2020-04-21 开利公司 用于暖通空调制冷的腐蚀保护系统
EP3997392A4 (fr) * 2019-07-12 2023-08-02 Rheem Australia PTY Limited Système de surveillance pour fluides chauffés

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109869910B (zh) * 2017-12-05 2022-03-22 青岛经济技术开发区海尔热水器有限公司 一种防腐装置及热水器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3916847A1 (de) * 1989-05-24 1990-11-29 Norsk Hydro Magnesium Elektrisch korrosionsgeschuetzte behaelteranordnung
FR2776370A1 (fr) * 1998-03-20 1999-09-24 Pierre Lacaze Dispositif de production d'eau chaude comportant une cuve equipee de moyens de protection cathodique a courant impose
EP1077352A2 (fr) * 1999-08-18 2001-02-21 Robert Bosch Gmbh Dispositif de protection pour accumulateur d'eau chaude

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9002952U1 (de) * 1990-01-30 1990-08-02 Norsk Hydro Magnesiumgesellschaft mbH, 4250 Bottrop Warmwasserbereiter o.dgl.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3916847A1 (de) * 1989-05-24 1990-11-29 Norsk Hydro Magnesium Elektrisch korrosionsgeschuetzte behaelteranordnung
FR2776370A1 (fr) * 1998-03-20 1999-09-24 Pierre Lacaze Dispositif de production d'eau chaude comportant une cuve equipee de moyens de protection cathodique a courant impose
EP1077352A2 (fr) * 1999-08-18 2001-02-21 Robert Bosch Gmbh Dispositif de protection pour accumulateur d'eau chaude

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111051572A (zh) * 2017-09-07 2020-04-21 开利公司 用于暖通空调制冷的腐蚀保护系统
EP3997392A4 (fr) * 2019-07-12 2023-08-02 Rheem Australia PTY Limited Système de surveillance pour fluides chauffés
US12117210B2 (en) 2019-07-12 2024-10-15 Rheem Australia Pty Limited Monitoring system for heated fluids

Also Published As

Publication number Publication date
EP1666809B1 (fr) 2007-10-10
ATE375485T1 (de) 2007-10-15
DE502005001665D1 (de) 2007-11-22
DE102004055261B3 (de) 2006-08-03

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