GB1423959A - Regulated power supply for non-sacrificial anode - Google Patents

Regulated power supply for non-sacrificial anode

Info

Publication number
GB1423959A
GB1423959A GB4821474A GB4821474A GB1423959A GB 1423959 A GB1423959 A GB 1423959A GB 4821474 A GB4821474 A GB 4821474A GB 4821474 A GB4821474 A GB 4821474A GB 1423959 A GB1423959 A GB 1423959A
Authority
GB
United Kingdom
Prior art keywords
anode
transistor
sacrificial anode
resistor
conductor
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
Application number
GB4821474A
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.)
Rheem International Inc
Original Assignee
Rheem International Inc
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 Rheem International Inc filed Critical Rheem International Inc
Publication of GB1423959A publication Critical patent/GB1423959A/en
Expired legal-status Critical Current

Links

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
    • F24H9/40—Arrangements for preventing corrosion
    • F24H9/45—Arrangements for preventing corrosion for preventing galvanic corrosion, e.g. cathodic or electrolytic means
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is dc
    • G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
    • G05F3/22—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the bipolar type only

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Prevention Of Electric Corrosion (AREA)

Abstract

1423959 System for cathodic protection RHEEM INTERNATIONAL Inc 7 Nov 1974 [21 March 1974] 48214/74 Heading C7E A corrosion prevention system comprises a non-sacrificial anode 12 in an electrically conductive fluid 11 in contact with corrodible metal 10 which forms the cathode (e.g. a water tank), and an electrical bridge system as shown having a semi-conductor 24 connected to 12, a resistor 26, and a constant voltage source (e.g. the conductor between resistors 28 and 30, as shown). The semiconductor may be a PNP transistor, and there may be a light-emitting diode between either the DC source and the bridge Fig. 5 (not shown) or the transistor and the anode Fig. 6, (not shown) to monitor operation of the system. Resistor 28 may be replaced by a Zener diode, to hold the voltage level of the base of the transistor constant. The system delivers constant current through the anode, regardless of variations in the resistivity of the anode-liquid-cathode system.
GB4821474A 1974-03-21 1974-11-07 Regulated power supply for non-sacrificial anode Expired GB1423959A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US45320774A 1974-03-21 1974-03-21

Publications (1)

Publication Number Publication Date
GB1423959A true GB1423959A (en) 1976-02-04

Family

ID=23799606

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4821474A Expired GB1423959A (en) 1974-03-21 1974-11-07 Regulated power supply for non-sacrificial anode

Country Status (3)

Country Link
AU (1) AU7554274A (en)
GB (1) GB1423959A (en)
ZA (1) ZA747511B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1640478A2 (en) * 2004-09-27 2006-03-29 Aos Holding Company Water storage device having a powered anode
US8068727B2 (en) 2007-08-28 2011-11-29 Aos Holding Company Storage-type water heater having tank condition monitoring features

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11525603B2 (en) * 2019-10-29 2022-12-13 Radtech, Llc Sacrificial anode and method for determining anode health for water heater early warning system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1640478A2 (en) * 2004-09-27 2006-03-29 Aos Holding Company Water storage device having a powered anode
EP1640478A3 (en) * 2004-09-27 2006-05-17 Aos Holding Company Water storage device having a powered anode
US7372005B2 (en) 2004-09-27 2008-05-13 Aos Holding Company Water storage device having a powered anode
CN1766458B (en) * 2004-09-27 2011-07-13 Aos控股公司 Water storage device and method used for protecting water-storing device having galvanical anode
US8162232B2 (en) 2004-09-27 2012-04-24 Aos Holding Company Water storage device having a powered anode
US8068727B2 (en) 2007-08-28 2011-11-29 Aos Holding Company Storage-type water heater having tank condition monitoring features

Also Published As

Publication number Publication date
AU7554274A (en) 1976-05-20
ZA747511B (en) 1975-11-26

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee