EP0541659B1 - Verfahren und vorrichtung zur überwachung und erneuerung des flüssigkeitsflusses in wärme- und kühlsystemen - Google Patents

Verfahren und vorrichtung zur überwachung und erneuerung des flüssigkeitsflusses in wärme- und kühlsystemen Download PDF

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Publication number
EP0541659B1
EP0541659B1 EP91914174A EP91914174A EP0541659B1 EP 0541659 B1 EP0541659 B1 EP 0541659B1 EP 91914174 A EP91914174 A EP 91914174A EP 91914174 A EP91914174 A EP 91914174A EP 0541659 B1 EP0541659 B1 EP 0541659B1
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EP
European Patent Office
Prior art keywords
liquid
reconditioning
flow
viewing
monitoring
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
EP91914174A
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English (en)
French (fr)
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EP0541659A1 (de
Inventor
Joe Johannesson
Sven-Gunnar Svensson
Björn CARLSSON
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GLOBAL ENERGI SERVICE AB
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GLOBAL ENERGI SERVICE AB
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Publication of EP0541659A1 publication Critical patent/EP0541659A1/de
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Classifications

    • 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

Definitions

  • the present invention relates to a method and apparatus for monitoring and reconditioning system liquid, i.e. the flow of liquid in heating and cooling systems, the method being characterized by monitoring and reconditioning the system liquid continuously in a part flow removed from the system and returning said part flow to the system subsequent to reconditioning.
  • Radiators can be mentioned as an example of heating systems, while air-conditioning systems are examples of cooling systems.
  • system liquid embraces, primarily, system water, which may possibly contain standard chemicals, such as glycol or alcohol.
  • reconditioning the system liquid of heating and cooling systems is meant here treating the liquid mechanically, chemically or physically-chemically in a manner to halt corrosion that is present in the system, to remove slime, precipitations and coatings from said system, and to prevent any future corrosion, slime formation and deposits from occurring.
  • the liquid may, for instance, have an unsuitable pH-value, i.e. a pH-value which does not lie within the recommended range of 8.5-9.5 in the case of heating-system water, or may have a conductivity (salt content) which is too high and which does not lie beneath 200 »S/cm as recommended for heating-system water, or an excessively high oxygen content, i.e. an oxygen content which does not lie beneath the recommended value of 0.05 mg/l at 95°C,
  • Another problem is that the formation of slime in the liquid can result in operational disturbances, while deposits and coatings result in energy losses.
  • Patent NO 160546 teaches apparatus for venting or purging a closed liquid system in a manner as to remove small air bubbles or vapour bubbles, by causing the bubbles to agglomerate into larger bubbles of greater buoyancy, and thereafter removing the bubbles from the system by means of said apparatus.
  • U.S. 4,413,675 describes a filter and a viewing glass incorporated in the cooling system and located in the direct total flow between a motor and a radiator.
  • a transparent conduit incorporating double, conical screens or filters is intended to prevent blockaging of the radiator, and the arrangement also enables the operation of the cooling-water pump and thermostat to be checked visually and indicates corrosive liquid and relative flow.
  • the arrangement is said to be suitable for installation in the cooling system of internal combustion engines. The total cooling-liquid flow passes through the arrangement before said flow is passed to the radiator. It is necessary to remove and clean the filters when the need arises, during which time the system is unavoidably out of operation.
  • U.S. 4,793,403 teaches a method of cleaning the cooling system of an internal combustion engine, wherein the whole of the cooling liquid is passed to a zone (a device) located externally of the cooling system, where the liquid is treated in a manner to remove particles of rust, deposits and slime.
  • This treatment requires the steps of filtering-off contaminants, adding chemicals, such as corrosion inhibitors, adding means for adjusting the pH and an anti-corrosion agent, returning the cooling liquid from the treatment zone to the engine cooling system, and filtering the returning cooling liquid.
  • broschyr ASEA-ATOM BWR 75 describes the cleansing of turbine-condensation water by filtering the water prior to returning said water to the reactor, and also the cleansing of reactor water, by removing anionic and suspended impurities such as to impart a specified degree of purity to the water in the reactor vessel, by means of two parallel ion-exchange units consisting of radial-flow bed filters.
  • the present invention relates to a method and apparatus for continuously monitoring and improving the condition of system liquid, by removing a part flow of the system liquid, e.g. the system water of a heating or cooling system, and monitoring and subsequently conditioning the liquid in a given order of treatment steps within one and the same apparatus unit incorporated in said system, said steps comprising:
  • the reconditioning system also includes alarm devices which function to produce an optical and/or electrical alarm signal in the event of an operational disturbance and/or when the system liquid is in poor condition, thus when, for instance, filtering-off particles, measuring the liquid flow, and when measuring pH, oxygen content and conductivity.
  • the inventive apparatus is installed for the purpose of alleviating maintenance and for preventing the need for maintenance and, as before mentioned, is operated without interrupting the normal operation for system liquid, since the necessary cleaning or exchange of, for instance, filters is effected in a branched part flow which, subsequent to reconditioning, is returned to the total supply system.
  • the aforesaid conditioning steps need not necessarily be carried out in the aforesaid order, and the steps may be mutually reversed when considered suitable.
  • the individual steps are carried out with the aid of known auxiliary devices, which do not form part of the invention as such.
  • the essential feature of the present invention is that the different, individual conditioning steps are carried out successively, without interrupting the function of the system as a whole.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Physical Water Treatments (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Details Of Measuring And Other Instruments (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Degasification And Air Bubble Elimination (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)

Claims (2)

  1. Verfahren zum Überwachen und Rekonditionieren des Flüssigkeitsflusses eines Heiz- oder Kühlsystems, wobei die Systemflüssigkeit geprüft und befreit wird von fremden, gefährlichen, festen und gasförmigen Substanzen,
    gekennzeichnet durch
    Überwachen und Rekonditionieren der Systemflüssigkeit in kontinuierlicher Weise, ohne eine normale Systemfunktion zu unterbrechen, durch Bewirken vom Rekonditionieren in einer Vielzahl sequentieller Schritte innerhalb einer Vorrichtungseinheit, welche in das System eingegliedert ist, und an einem Teilfluß, der abgetrennt ist von dem Hauptflüssigkeitsfluß, und Zurückführen des Teilflusses zu dem Hauptfluß nach dem Rekonditionieren, wobei das Rekonditionieren die Schritte umfaßt:
    - Messen des augenblicklichen Flüssigkeitsflusses und Betrachten der Systemflüssigkeit mit Hilfe eines Sichtglases, welches in die Vorrichtungseinheit eingegliedert ist;
    - magnetisches Ausfiltern jeglicher Partikel von Magnetit, welche vorliegen können;
    - Ausfiltern fester Partikel (Feinfilterung);
    - Entfernen korrosiver Gase;
    - Entlüften des Systems;
    - Messen von pH, Sauerstoffgehalt und Leitfähigkeit,
    wobei die Reihenfolge der verschiedenen Teilschritte umgekehrt sein kann, falls nötig, und wobei die Vorrichtung ein optisches und/oder elektrisches Alarmsignal in dem Fall von Abweichungen von gegenseitig bezogenen Steuerwerten, die in die Vorrichtung eingesetzt sind, wobei diese Abweichungen anzeigen, daß die Systemflüssigkeit in einem schlechten Zustand ist, oder eine Unterbrechung im Betrieb erzeugt.
  2. Vorrichtung zum Ausführen des Verfahrens nach Anspruch 1 zum Überwachen und Rekonditionieren des Flüssigkeitsflusses in einem Heiz- oder Kühlsystem,
    dadurch gekennzeichnet, daß
    die Vorrichtung eine integrierte Einheit umfaßt, welche verbunden ist mit einem Teilfluß, der abgezweigt ist von dem Hauptfluß, und welche die folgenden sukzessiven Hilfsvorrichtungen umfaßt:
    - einen Flußmesser mit einem Sichtglas zum Betrachten der Systemflüssigkeit im schlechten Zustand;
    - ein magnetisches Filter (2) zum Entfernen von Partikeln aus Magnetit;
    - ein Filter (3) zum Entfernen fester Partikel (Feinfilterung);
    - eine Einrichtung (4) zum Entfernen korrosiver Gase und zum Entlüften des Systems;
    - eine Einrichtung (5) zum Messen des Sauerstoffgehalts und der Leitfähigkeit; und
    - eine Alarmeinrichtung (6) zum Erzeugen eines optischen und/oder elektrischen Alarmsignals in dem Fall von Abweichungen von gegenseitig bezogenen Steuerwerten, die in die Vorrichtung eingesetzt sind, oder einer Unterbrechung im Betrieb.
EP91914174A 1990-07-27 1991-06-24 Verfahren und vorrichtung zur überwachung und erneuerung des flüssigkeitsflusses in wärme- und kühlsystemen Expired - Lifetime EP0541659B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9002519 1990-07-27
SE9002519A SE467121B (sv) 1990-07-27 1990-07-27 Saett och anordning foer oevervakning och rekonditionering av vaetskefloedet i vaerme- och kylsystem
PCT/SE1991/000452 WO1992002766A1 (en) 1990-07-27 1991-06-24 A method and apparatus for monitoring and reconditioning the flow of liquid in heating and cooling systems

Publications (2)

Publication Number Publication Date
EP0541659A1 EP0541659A1 (de) 1993-05-19
EP0541659B1 true EP0541659B1 (de) 1994-06-01

Family

ID=20380056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91914174A Expired - Lifetime EP0541659B1 (de) 1990-07-27 1991-06-24 Verfahren und vorrichtung zur überwachung und erneuerung des flüssigkeitsflusses in wärme- und kühlsystemen

Country Status (9)

Country Link
EP (1) EP0541659B1 (de)
AT (1) ATE106528T1 (de)
CA (1) CA2088151A1 (de)
DE (1) DE69102282T2 (de)
DK (1) DK0541659T3 (de)
FI (1) FI96988C (de)
NO (1) NO179188C (de)
SE (1) SE467121B (de)
WO (1) WO1992002766A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE501484C2 (sv) * 1994-02-07 1995-02-27 Bjoern Carlsson Anordning vid ett värme- eller kylsystem med en i en sluten ledningskrets kontinuerligt strömmande systemvätska
SE510471C2 (sv) * 1994-11-17 1999-05-25 Bjoern Carlsson Förfarande och anordning för att hämma uppkkomsten av korrosion i en ledningskrets för en kontinuerligt strömmande systemvätska
FR2741446B1 (fr) * 1995-11-20 1998-01-16 Ifremer Installation automatique de surveillance de la qualite d'un milieu liquide, notamment aquatique
GB0618802D0 (en) * 2006-09-23 2006-11-01 Smith Martin J Central heating system condition indicator
DE202010012271U1 (de) 2010-09-07 2010-11-11 Aew Wassertechnologie Gmbh Vorrichtung und System zum Konditionieren von Wasser für wasserführende Kreislaufsysteme
DE102010044567B4 (de) 2010-09-07 2021-04-15 Aew Wassertechnologie Gmbh Vorrichtung und System zum Konditionieren von Wasser für wasserführende Kreislaufsysteme
NL2020690B1 (en) * 2018-03-29 2019-10-07 Flamco Bv Removal device with flow control

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4413675A (en) * 1981-08-10 1983-11-08 Gano Lloyd D Cooling system protective device
SE452184B (sv) * 1986-03-10 1987-11-16 Bengt Arne Persson Anordning for avluftning av ett slutet ledningssystem
US4793403A (en) * 1987-08-20 1988-12-27 Wynn Oil Company Engine coolant flush-filtering, using external gas pressure

Also Published As

Publication number Publication date
DK0541659T3 (da) 1994-09-26
WO1992002766A1 (en) 1992-02-20
NO179188C (no) 1996-08-21
DE69102282T2 (de) 1994-10-13
SE9002519D0 (sv) 1990-07-27
NO930259L (no) 1993-02-23
NO179188B (no) 1996-05-13
SE9002519L (sv) 1992-01-28
FI930309A (fi) 1993-01-26
FI96988C (fi) 1996-09-25
NO930259D0 (no) 1993-01-26
FI96988B (fi) 1996-06-14
CA2088151A1 (en) 1992-01-27
FI930309A0 (fi) 1993-01-26
SE467121B (sv) 1992-05-25
DE69102282D1 (de) 1994-07-07
EP0541659A1 (de) 1993-05-19
ATE106528T1 (de) 1994-06-15

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