WO2009150153A1 - Dispositif de désinfection - Google Patents

Dispositif de désinfection Download PDF

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Publication number
WO2009150153A1
WO2009150153A1 PCT/EP2009/057095 EP2009057095W WO2009150153A1 WO 2009150153 A1 WO2009150153 A1 WO 2009150153A1 EP 2009057095 W EP2009057095 W EP 2009057095W WO 2009150153 A1 WO2009150153 A1 WO 2009150153A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
water heater
valves
heater
hot water
Prior art date
Application number
PCT/EP2009/057095
Other languages
German (de)
English (en)
Inventor
Michael Meischl
Original Assignee
Gerhard Synek Gesellschaft M.B.H.
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 Gerhard Synek Gesellschaft M.B.H. filed Critical Gerhard Synek Gesellschaft M.B.H.
Publication of WO2009150153A1 publication Critical patent/WO2009150153A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/006—Arrangements or methods for cleaning or refurbishing water conduits
    • 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
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0073—Arrangements for preventing the occurrence or proliferation of microorganisms in the water
    • 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
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/14—Cleaning; Sterilising; Preventing contamination by bacteria or microorganisms, e.g. by replacing fluid in tanks or conduits
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/212—Temperature of the water
    • F24H15/219—Temperature of the water after heating
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/305—Control of valves
    • F24H15/31—Control of valves of valves having only one inlet port and one outlet port, e.g. flow rate regulating valves
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/355—Control of heat-generating means in heaters
    • F24H15/37—Control of heat-generating means in heaters of electric 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
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/395—Information to users, e.g. alarms
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/40—Control of fluid heaters characterised by the type of controllers
    • F24H15/486—Control of fluid heaters characterised by the type of controllers using timers
    • 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
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
    • F24H9/2028—Continuous-flow heaters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/04—Heat
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/003—Downstream control, i.e. outlet monitoring, e.g. to check the treating agents, such as halogens or ozone, leaving the process
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/02—Temperature
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/44—Time
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/184—Preventing harm to users from exposure to heated water, e.g. scalding

Definitions

  • the present invention relates to a device for sterilizing, in particular for fighting Legionella, at least one water pipe with at least one hot water supply and at least one cold water supply and at least one water outlet, which is particularly suitable for filling a bathtub.
  • the present invention further relates to a method for sterilizing, in particular for fighting Legionella, at least one water pipe with at least one hot water supply and at least one cold water supply and at least one water outlet, which is particularly suitable for filling a bathtub.
  • Water pipes especially fittings at water taps, which cold water or hot water of less than 50 0 C lead, often provide a source of pathogenic germs (such as Legionella), with which a user can be infected.
  • pathogenic germs such as Legionella
  • contaminated water tapping points can lead to an increased risk of infection.
  • the danger, for example, of infecting Legionella is greatest when spraying Legionella-containing water. Because this makes it possible for legionella to reach the lungs of people via airborne particles in the air.
  • the device according to this document consists of a water tank, which comprises a heat source and which is connected via a connecting line with a water extraction point.
  • EP 1 693 344 A1 also discloses a device for the thermal disinfection of drinking water systems. Hot water is transported via a pump to a water heater, which is connected to a cold water pipe.
  • thermal disinfection Another physical method of germ reduction is thermal disinfection. Although such methods are efficient in sterilizing, especially in the fight against Legionella, but these methods also have a number of disadvantages.
  • the water temperature at the sampling points should not exceed about 60 ° C., usually about 50 ° C., due to a possible risk of scalding. Temperatures around 60 0 C are suitable to kill at least Legionella, but only if no cooling caused by long lines or poor insulation, all pipes are flushed regularly and virtually no deposits are found in it. Due to high temperatures, the installation material ages much faster, galvanizing of the pipes is attacked, plastics become brittle and burst. By using high temperatures and adjacent cold water lines can be warmed up, which can eventually also lead to contamination of these lines.
  • the capacity of the hot water storage is anyway not sufficient to provide the required amount of hot water for thermal brief treatment, so that multiple interruptions in the treatment are unavoidable.
  • the water supply lines can be sterilized, but cold water lines remain untouched by the thermal disinfection. It is therefore an object of the present invention to provide a device which is suitable for effectively sterilizing cold water lines leading to a withdrawal point, in particular thereby significantly reducing the number of Legionella present therein.
  • a device for sterilizing, in particular for fighting Legionella at least one water pipe with at least one hot water supply and at least one cold water supply and at least one water tapping point, which is particularly suitable for filling a bathtub, wherein a closable valve is arranged on the cold and hot water supply lines , After closing the valves on the supply lines, the hot water is passed through a water heater and a cold water discharge to the water tap, wherein on the input or output line of the water heater, a closable valve is arranged, which is opened when closing the valves in the supply lines.
  • the hot water is fed via a branch line via a water heater in the cold water pipe or the water tap.
  • a closable valve is also provided on the supply line to the water heater or discharge to the water heater, which remains closed at the open valves to the supply lines and can be closed at the opening. This prevents hot water from entering the cold water line and cold water from entering the hot water line during regular water extraction.
  • the device according to the invention is suitable for filling bathtubs and other water taps, such as e.g. showers or sinks. Due to the fact that preferably immunosuppressed persons infect with Legionella, the device according to the invention is particularly suitable for use in nursing homes and hospitals.
  • Ball valves, gate valves, disc valves are valves, solenoid valves, changeover valves (eg three-way changeover valves) and the like used.
  • the valves used according to the invention can be operated manually, mechanically, electromagnetically, hydraulically, pneumatically or electrically.
  • the valves are electrically operated.
  • solenoid valves are used, since they have the advantage over reversing valves, for example, that no residual water quantities are accumulated in the valve body.
  • the water heater is formed by a water heater, in particular a gas flow heater or Strom beckerer- heater, which is suitable to heat the hot water to a maximum of 75 ° C, preferably to a maximum of 70 0 C.
  • the hot water which is passed through a water heater to the cold water line can be heated in various ways to the desired temperature, which is at least 55 ° C, preferably at least 60 0 C.
  • the water heater can also be connected to common solar systems, thereby saving the electricity and gas consumption.
  • a throttle valve is provided on the hot water supply of the water heater.
  • the temperature difference ( ⁇ T) between the inlet and outlet of the water heater is preferably 20-25 K. If the residence time of the water in the water heater is too low, the water can not reach the required temperature, the duration of residence also being dependent on the amount of energy (heat) delivered by the water heater.
  • the throttle valve should be designed so that only a certain amount of water per unit time is transported through the water heater, the flow rate should preferably be less than 80 l / h and more than 50 l / h.
  • the temperature is of crucial importance in the sterilization.
  • at least one temperature measuring device is arranged on the outlet line of the water heater and in front of the water outlet in the cold water line. This makes it possible to read off the temperature at at least one point of the water pipe.
  • the temperature measurement can be carried out in various ways with a variety of measuring instruments. For example, temperature sensors, bimetallic thermometers, resistance thermometers, etc. can be used for temperature measurement.
  • the closable valves and optionally the water heater are connected to a control device.
  • the control device is preferably microprocessor-controlled.
  • Such a control device according to the invention can be programmed directly on the device or remotely controlled by radio waves.
  • control device is preferably provided with a timer.
  • a timer it is possible to automatically activate the device according to the invention, for example, in the night hours and deactivate after the sterilization process.
  • the timer used can be either electronic or mechanical.
  • control device can also be connected to the temperature measuring device.
  • Such a coupling ensures improved control of the degermination process, since the duration of the sterilization can be measured, for example, after reaching a certain temperature in the lines.
  • the control device preferably has a control lamp which is activated with the valves closed at the supply lines and optionally with active water heater and / or at a temperature of over 45 ° C.
  • the control lamp is used to signal that the device according to the invention is active and that there is a risk of scalding at the water outlet.
  • the control lamp may also be connected to the control be connected and activated by this.
  • the control lamp can be of very different design, but preferably a lamp is provided that is widely visible, preferably held in signal color (red or orange).
  • the device can also have an acoustic signal generator, which points to the risk of scalding at the water extraction point by means of an acoustic signal. Such a signal generator additionally increases security for the user.
  • Another aspect of the present invention relates to a method for sterilizing, in particular for fighting Legionella, at least one water pipe with at least one hot water supply and at least one cold water supply and at least one water tapping point, which is particularly suitable for filling a bathtub, wherein by closing valves located at the supply lines the hot water is passed through a water heater and a cold water discharge to the water tapping point, wherein on the input or output line of the water heater, a closable valve is arranged, which is opened when closing the valves in the supply lines.
  • the hot water is preferably heated in the water heater to 55 ° C to 75 ° C, in particular to 60 0 C to 70 0 C.
  • the water heater is a water heater, in particular a gas flow heater or current heater.
  • the water is preferably throttled before entering the water heater at the hot water supply of the water heater by a valve.
  • the closable valves and optionally the water heater are preferably controlled by a control device.
  • the temperature is measured at the outlet pipe of the water heater and before the water tap.
  • the temperature is maintained at the outlet line of the water heater from 55 ° C to 75 ° C, especially from 60 0 C to 70 0 C for at least 5, preferably at least 10, more preferably at least 15 minutes.
  • a connec- Trolllampe activated to signal a scalding hazard.
  • Fig. 1 shows schematically a hydraulic circuit diagram of a device for sterilizing cold water pipes and water tapping points.
  • a device 1 for sterilizing at least one water pipe 2 is shown, which is connected to a supply line for hot water 3 and a supply line for cold water 4.
  • each two closable valves 5 are arranged.
  • the hot water via a line branch (input line) 13 is guided to a water heater 6, which in turn is connected via a line branch (output line) 14 with the cold water supply line 4.
  • a closable valve 7 which is opened when the valves 5 are closed.
  • a throttle valve 8 is arranged, which throttles the pressure of the water of the hot water supply line 3 to a certain value.
  • the flow rate is throttled to 60-72 l / h and ideally should not exceed 72 l / h.
  • a temperature measuring device 9 is provided downstream of the valve 5.
  • the valves 5 and 7 and the water heater 6 are connected to a control device 10.
  • the control device 10 additionally has a timer 11.
  • a control lamp 12 is provided on the device 1, which is also connected to the control device 10. This makes it possible with activated device 1, in which the valves 5 are closed, the valve 7 is opened and the water heater 6 is in operation, to indicate a possible risk of scalding at the water tap.

Abstract

La présente invention concerne un dispositif (1) pour désinfecter, en particulier pour lutter contre les légionelles, au moins une conduite d'eau (2) qui présente au moins une amenée (3) d'eau chaude et au moins une amenée (4) d'eau froide, et au moins un point de prélèvement d'eau qui convient en particulier pour remplir une baignoire, une soupape refermable (5) étant disposée sur les conduites d'amenée (3, 4) d'eau froide et d'eau chaude. Après la fermeture des soupapes (5) prévues sur les amenées (3, 4), l'eau chaude est amenée à travers un surchauffeur d'eau (6) et par l'intermédiaire d'une conduite (15) d'eau froide vers le point de prélèvement d'eau, une soupape refermable (7) qui est ouverte lorsque les soupapes (5) prévues dans les amenées (3, 4) sont fermées étant disposée sur le conduit d'entrée ou de sortie du surchauffeur d'eau (6).
PCT/EP2009/057095 2008-06-09 2009-06-09 Dispositif de désinfection WO2009150153A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0092408A AT506890A1 (de) 2008-06-09 2008-06-09 Vorrichtung und verfahren zum entkeimen
ATA924/2008 2008-06-09

Publications (1)

Publication Number Publication Date
WO2009150153A1 true WO2009150153A1 (fr) 2009-12-17

Family

ID=40972833

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/057095 WO2009150153A1 (fr) 2008-06-09 2009-06-09 Dispositif de désinfection

Country Status (2)

Country Link
AT (1) AT506890A1 (fr)
WO (1) WO2009150153A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0594020A1 (fr) * 1992-10-17 1994-04-27 Werner Dipl.-Ing. Dünnleder Installation pour chauffer de l'eau sanitaire et pour tuer de la legionella dans cette eau sanitaire
DE19932436A1 (de) * 1999-07-12 2001-02-01 Gewofag Gemeinnuetzige Wohnung Trinkwarmwasserleitungsanlage
DE102004049316A1 (de) * 2004-10-09 2006-04-13 Gerhard Dipl.-Ing. Schreiner Verfahren und Vorrichtung zur thermischen Desinfektion von Anlagenteilen der Trinkwasserinstallation
EP1693344A1 (fr) * 2005-02-18 2006-08-23 Sirius 12 GmbH Dispositif pour la désinfection thermique des installations d'alimentation d'eau potable

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0594020A1 (fr) * 1992-10-17 1994-04-27 Werner Dipl.-Ing. Dünnleder Installation pour chauffer de l'eau sanitaire et pour tuer de la legionella dans cette eau sanitaire
DE19932436A1 (de) * 1999-07-12 2001-02-01 Gewofag Gemeinnuetzige Wohnung Trinkwarmwasserleitungsanlage
DE102004049316A1 (de) * 2004-10-09 2006-04-13 Gerhard Dipl.-Ing. Schreiner Verfahren und Vorrichtung zur thermischen Desinfektion von Anlagenteilen der Trinkwasserinstallation
EP1693344A1 (fr) * 2005-02-18 2006-08-23 Sirius 12 GmbH Dispositif pour la désinfection thermique des installations d'alimentation d'eau potable

Also Published As

Publication number Publication date
AT506890A1 (de) 2009-12-15

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