WO2012150295A1 - Dispositif filtrant et procédé pour purifier de l'eau - Google Patents

Dispositif filtrant et procédé pour purifier de l'eau Download PDF

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Publication number
WO2012150295A1
WO2012150295A1 PCT/EP2012/058115 EP2012058115W WO2012150295A1 WO 2012150295 A1 WO2012150295 A1 WO 2012150295A1 EP 2012058115 W EP2012058115 W EP 2012058115W WO 2012150295 A1 WO2012150295 A1 WO 2012150295A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
display element
water
filter device
filter element
Prior art date
Application number
PCT/EP2012/058115
Other languages
German (de)
English (en)
Inventor
Marion Heilmaier
Herbert Kusstatscher
Gebhard Mayer
Original Assignee
BSH Bosch und Siemens Hausgeräte 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 BSH Bosch und Siemens Hausgeräte GmbH filed Critical BSH Bosch und Siemens Hausgeräte GmbH
Publication of WO2012150295A1 publication Critical patent/WO2012150295A1/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
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C02F1/003—Processes for the treatment of water whereby the filtration technique is of importance using household-type filters for producing potable water, e.g. pitchers, bottles, faucet mounted devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/143—Filter condition indicators
    • 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
    • C02F2209/445—Filter life
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/04—Flow arrangements
    • C02F2301/043—Treatment of partial or bypass streams

Definitions

  • the present invention relates to a filter device for purifying water, comprising a filter housing, a filter element and a display element for indicating exhaustion of the filter element, and a method for purifying water.
  • a known filter device for purifying water is e.g. shown in DE 198 19 098 A1. This has a arranged in a filter housing filter element and a display element for indicating a Auswechseins the filter element.
  • the display element is designed as an electronic timer, which provides a fixed exchange interval for replacing the filter element.
  • a disadvantage of this filter device is that not an actual exhaustion of the filter element is determined, but the change interval is set independently of the filtered amount of water. This makes it possible in principle that a replacement of the filter element is displayed, although this still has a sufficient filter function.
  • a filter device for purifying water which takes into account an actual exhaustion of a filter element, is shown in DE 10 2005 035 045 A1.
  • the measurement of the exhaustion of the filter element is based on the TDS value or conductivity measurement and requires a correspondingly complex electronics for this purpose.
  • Object of the present invention is to provide a filter device for purifying water, which eliminates the aforementioned disadvantages and a fast and provides easy indication of the current state of the respective filter element, as well as to provide a method of purifying water which allows replacement of a filter element in response to its depletion.
  • a filter device for purifying water has a filter housing, a filter element and a display element for indicating an exhaustion of the filter element.
  • the display element has an outer indicator surface with color indicators for indicating a color change of the indicator surface as a function of the exhaustion of the filter element.
  • the color indicators allow a quick and easy representation of the actual exhaustion of the filter element. This prevents that a still functional filter element is replaced.
  • the color indicators allow an electroless operation of the filter device.
  • the filter device can be installed in critical areas such as bathrooms without a special device-technical effort to meet certain safety requirements.
  • the indicator surface is plastic based and the color indicators are pH sensitive.
  • This exemplary embodiment is suitable for optically indicating, based on the pH value, whether the filter element is exhausted.
  • the indicator surface can have two colorations, one color symbolizing a state of rest and exhaustion, and the other color symbolizing a state of cleaning. As a result, it can be determined in the absence of color change already at the beginning of the cleaning process, whether the filter element is exhausted or whether it is still functional.
  • the indicator surface may have at least one intermediate coloration.
  • the at least one intermediate coloration depicts a degree of exhaustion and can give an indication of an imminent necessary change of the filter element, which prevents a user from being surprised by the exhaustion of the filter element. With a large number of intermediate dyeings, several degrees of fatigue can be visually displayed.
  • the display element is arranged in an at least partially transparent container, which is detachably connected to an outlet nozzle of the filter housing and is flowed through by the outlet side water.
  • the arrangement in the container the display element is protected from external influences and the respective measurement can not be distorted by the external influences. Due to the detachable connection of the display element receiving container to the filter housing also the display element can be exchanged itself quickly, so that the display element can be adapted to changing filter conditions individually.
  • the transparent container is integrated into the filter housing and forms the outlet nozzle.
  • the display element is designed as a float, which is freely movably received in the container.
  • the formation of the display element as a floating float allows a compact design of the float, because despite small external dimensions, a relatively large indicator surface can be realized when it extends, for example, fully on the outer circumference of the float.
  • the display element is attachable to a surrounding portion locally separate from the filter housing.
  • the filter device can be quasi hidden and thus protected from external influences such as splashing.
  • the attachment of the display element can be conveniently done in sight.
  • the display element has at least one adhesive surface for connection to the surrounding portion, which allows attachment of the display element to rough surfaces.
  • the display element has a squeegee, which allows a repeated attachment of the display element.
  • a filter device for purifying water with a filter device comprising a filter element arranged in a filter housing and a display element for indicating exhaustion of the filter element, wetting of an outer indicator surface of the display element with water flowing through the filter element depletes the filter element Color change of the indicator surface is displayed.
  • This method allows a currentless, quick and easy display of a current state of the filter element.
  • the indicator surface when wetted with purified water or filter water, changes from an original color to an operational color and when wet with unpurified water or raw water from the color of the operation back into the original color.
  • the indicator surface is transferred after each cleaning process back to its original coloration, which significantly facilitates the detection of fatigue of the filter element, since in an exhausted filter element, the filter water has the same pH as the raw water and thus the indicator surface already at the beginning of a cleaning process no color change indicating and remaining in their original color.
  • the present invention is particularly suitable for providing a filter device in domestic use and in particular in areas in which a de-energized operation is preferred and descaled water is needed, the filter device allows a quick and easy display of the current state of its at least one filter element robust is and requires a small amount of service.
  • Other advantageous embodiments of the present invention are the subject of further subclaims.
  • FIG. 1 shows a perspective view of a first embodiment of a filter device according to the invention
  • FIG. 2 shows a line diagram of the filter device
  • FIG. 3 shows a representation of a second embodiment of the filter device according to the invention.
  • a first exemplary embodiment of a filter device 1 for purifying water, in particular for descaling water, has a filter housing 2, a filter element 4 (see Figure 2) arranged in the filter housing 2 and a display element 6 for indicating exhaustion of the filter Filter element 4, which is arranged in a container 8 through which flows from the water exiting the filter housing 2.
  • the filter element 4 is arranged in a line section 10 which runs parallel to a main line 12 within the filter housing 2.
  • the main line 12 extends between an inlet connection 14 and an outlet connection 16 of the filter housing 2 and serves to guide a main flow through the filter device 1.
  • the thus formed as a secondary line section 10 can be actuated by a valve 18 instead of the main line 12 between the inlet nozzle 14 and the outlet pipe 16 are switched, so that the main line 12 is shut off from the main stream and this flows through the filter element 4.
  • the valve 18 is formed in the embodiment shown as a manually operated 4/2-way valve with 4 terminals for integration into the lines 10, 12 and two switch positions A, B. In the switching position A, the main line 12 is opened and the secondary line 10 is controlled.
  • switch position B In the switch position B is the Main line 12 controlled and the secondary line 10 is turned on.
  • the filter device 1 thus allows the alternate removal of untreated raw water (main line 12) or purified filter water (secondary line 10 with filter element 4).
  • the state of the filter device 1, in which the main current is passed through the main line 12 referred to as idle state (switch position A).
  • the state in which the main flow is passed through the sub-pipe 10 and thus through the filter element is referred to as a cleaning state (switching position B).
  • the display element 6 has a spherical shape and is designed as a freely movable float in the container 8.
  • the display element 6 can be creatively adapted to individual customer requirements and for example also have a fish shape. It consists of a plastic or a polymer with an outer peripheral indicator surface 20.
  • the indicator surface 20 has a plurality of pH-sensitive color indicators, not shown, each of which allows a color change of the indicator surface 20 and the display element 6 from an original coloration into a coloring operation.
  • the initial coloration symbolizes on the one hand the resting state and on the other hand a 100% or almost total exhaustion of the filter element 4.
  • the operating coloration symbolizes a depletion of the filter element 4 ⁇ 100% and thus a given functionality.
  • color indicators are provided for representing intermediate colorations, by means of which an impending change or imminent exhaustion of the filter element 4 is indicated.
  • PH-sensitive means that the color indicators react to a pH change of the water.
  • the filter element 4 is a limescale filter, is
  • the color indicators register the decrease in the pH value and indicate this by a color change of the indicator surface 20 from the original color to the operating color. If the indicator surface 20 is subsequently wetted with unfiltered water, the pH value rises again to its original value and the indicator surface 20 undergoes a renewed color change, this time from its operating coloration back to its original coloration.
  • the container 8 has a cylindrical shape and is screwed with an end-side connection region 22 on the outlet connection 16. To connect a sampling line, the container 8 has an outlet nozzle 24 with, for example, an externally threaded portion. He has at least one transparent or transparent peripheral wall 26 and preferably consists of a plastic, but can also be made of a glass.
  • the filter device 1 is used for providing descaled water for cleaning or removing lime deposits on tiles, in shower trays, in bathtubs, in sinks and the like in the domestic area.
  • the valve 18 is in its switching position A and the filter device 1 is thus in the idle state.
  • the main flow flows through the main line 12 and the secondary line 10 is closed.
  • the filter element 4 is not flowed through by the entering into the filter housing 2 water.
  • the water enters the unfiltered untreated from the outlet nozzle 16 in the container 8, flows around the display element 6 and exits through the outlet port 24 from the container 8.
  • the indicator surface 20 is wetted with the raw water and the display element 6 has the original color.
  • the valve 18 For cleaning or descaling of the water, the valve 18 is transferred to its switching position B and the filter device 1 goes into its cleaning state.
  • the main line 12 is shut off and the main flow flows through the secondary line 10 through the filter element 4.
  • the filter element 4 converts the bound bicarbonate H 2 C0 3 in carbon dioxide, whereby the proportion of carbonic acid in the filter water increases and the pH of the filter water drops.
  • the color indicators register the reduced pH Value of the filter water and go from the original color in the operating color, so that the display element 6 undergoes a first color change.
  • the filter device 1 After receiving a sufficient amount of filter water or after completion of the cleaning, the filter device 1 is transferred by bringing the valve 18 in its switching position A back to its resting state.
  • the secondary line 10 is shut off again and the main flow is again guided by the now open main line 12.
  • the container 8 is again flowed through with raw water, which has a relation to the filter water increased pH.
  • the color indicators perceive the pH change again and the display element 6 undergoes a second color change back to its original color.
  • the filter device 1 If the filter device 1 is in the cleaning state, i. the valve 18 is in its switching position B and the secondary line 6 is turned on, and the filter element 4 is completely exhausted, the bound bicarbont is not converted to carbonic acid. There is no reduction in the pH and the filter water has the same pH as the raw water. Consequently, the color indicators are not activated and the display element 6 remains in its original coloration. The user registers the missing color change of the display element 6 and is informed of its 100% fatigue and the need to replace the filter element 4. In this respect, a 100% fatigue staining is identical to the original staining.
  • the display element 6 is not accommodated in a container 8 arranged on a filter housing 2, but can be fastened as an independent element separately from the filter housing 2 on a surrounding section 28.
  • the display element 6 is designed as a plastic-based sticker having an indicator surface 20 formed as a visible surface with a plurality of pH-sensitive color indicators to allow a color change and a rear adhesive surface for connecting the display element 6 to the surrounding portion 28.
  • an adhesive surface at the rear but also a squeegee for Attachment of the display element 6 may be provided on the surrounding portion 28 by means of negative pressure.
  • the filter housing 2 is preferably unchanged from the first embodiment of Figure 1.
  • this embodiment allows the integration of the line diagram shown in Figure 2 in eg. A suitable wall installation and thus can also be formed locally separated from the filter housing 2, since the filter water is no longer necessarily guided over the display element 6.
  • the second embodiment thus enables the sole arrangement of the filter element 4 in the filter housing 2 and thus the permanent circuit of the filter element 4 between the inlet nozzle 16 and the outlet pipe 18.
  • the valve 18 and the main line 12 may be upstream of the filter housing 2.
  • the essential difference in the method to the first exemplary embodiment according to FIG. 1 is that the water flowing through the filter housing 2 is not automatically guided over the indicator surface 20.
  • the indicator surface 20 must be intentionally wetted at the beginning of a cleaning with the filter water to check the exhaustion of the filter element 4.
  • a filter device for purifying water comprising a filter housing, a filter element, and a display element for indicating exhaustion of the filter element, the display element having an outer indicator surface with color indicators for indicating a color change of the indicator surface in response to the exhaustion of the filter element, and a method for purifying water with such a device, wherein upon wetting an outer indicator surface of a display element with water flowing through a filter element, exhaustion of the filter element is displayed as a color change of an indicator surface.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Water Treatment By Sorption (AREA)
  • Filtration Of Liquid (AREA)

Abstract

L'invention concerne un dispositif filtrant pour purifier de l'eau, comprenant un boîtier (2) de filtre, un élément filtrant et un élément d'affichage (6) pour afficher un épuisement de l'élément filtrant, l'élément d'affichage (6) présentant une surface indicatrice extérieure (20) pourvue d'indicateurs de couleur pour indiquer un changement de couleur de la surface indicatrice (20) en fonction de l'épuisement de l'élément filtrant, ainsi qu'un procédé pour purifier de l'eau à l'aide d'un tel dispositif, un épuisement de l'élément filtrant étant affiché comme un changement de couleur d'une surface indicatrice lors du mouillage d'une surface indicatrice extérieure d'un élément d'affichage par de l'eau traversant un élément filtrant. La présente invention convient en particulier pour fournir un dispositif filtrant d'utilisation ménagère et en particulier dans les domaines dans lesquels un fonctionnement sans courant est préféré et de l'eau décalcarisée est nécessaire, le dispositif filtrant permettant un affichage rapide et simple de l'état effectif de son élément filtrant, étant robuste et requérant un entretien peu complexe.
PCT/EP2012/058115 2011-05-03 2012-05-03 Dispositif filtrant et procédé pour purifier de l'eau WO2012150295A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011075118.1A DE102011075118B4 (de) 2011-05-03 2011-05-03 Filtereinrichtung zum Reinigen von Wasser
DE102011075118.1 2011-05-03

Publications (1)

Publication Number Publication Date
WO2012150295A1 true WO2012150295A1 (fr) 2012-11-08

Family

ID=46208436

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/058115 WO2012150295A1 (fr) 2011-05-03 2012-05-03 Dispositif filtrant et procédé pour purifier de l'eau

Country Status (2)

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DE (1) DE102011075118B4 (fr)
WO (1) WO2012150295A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD969964S1 (en) 2020-03-06 2022-11-15 Pentair Residential Filtration, Llc Filtration system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4271015A (en) * 1979-01-22 1981-06-02 Moore Roger S Water treatment apparatus
DE19819098A1 (de) 1998-04-29 1999-11-11 Brita Gmbh Wasserreinigungsvorrichtung mit Mitteln zur Anzeige der Erschöpfung des Reinigungsmittels
WO2002000552A2 (fr) * 2000-06-23 2002-01-03 Innova/Pure Water, Inc. Indicateur de duree de vie d'un filtre a eau
EP1671931A1 (fr) * 2004-12-17 2006-06-21 Strix Limited Cuve de traitment d'eau et cartouches associées
DE102005035045A1 (de) 2005-07-27 2007-02-08 Brita Gmbh Messvorrichtung für die Bestimmung von Durchflussmengen elektrisch leitender Flüssigkeiten, Messelement und Verfahren

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB980335A (en) 1961-12-19 1965-01-13 John Frederick Zwicky Improvements relating to ion-exchange apparatus
US4635663A (en) 1985-10-03 1987-01-13 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Self-contained, single-use hose and tubing cleaning module
WO2008077622A2 (fr) 2006-12-22 2008-07-03 Aquis Wasser-Luft-Systeme Gmbh, Lindau, Zweigniederlassung Rebstein Dispositif de filtrage d'eau comportant un organe de réglage pour le réglage d'un rapport de mélange

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4271015A (en) * 1979-01-22 1981-06-02 Moore Roger S Water treatment apparatus
DE19819098A1 (de) 1998-04-29 1999-11-11 Brita Gmbh Wasserreinigungsvorrichtung mit Mitteln zur Anzeige der Erschöpfung des Reinigungsmittels
WO2002000552A2 (fr) * 2000-06-23 2002-01-03 Innova/Pure Water, Inc. Indicateur de duree de vie d'un filtre a eau
EP1671931A1 (fr) * 2004-12-17 2006-06-21 Strix Limited Cuve de traitment d'eau et cartouches associées
DE102005035045A1 (de) 2005-07-27 2007-02-08 Brita Gmbh Messvorrichtung für die Bestimmung von Durchflussmengen elektrisch leitender Flüssigkeiten, Messelement und Verfahren

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD969964S1 (en) 2020-03-06 2022-11-15 Pentair Residential Filtration, Llc Filtration system
USD1018771S1 (en) 2020-03-06 2024-03-19 Pentair Residential Filtration, Llc Filtration system

Also Published As

Publication number Publication date
DE102011075118B4 (de) 2023-12-07
DE102011075118A1 (de) 2012-11-08

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