CZ130899A3 - Water treating insert for water treatment device in household and the household water treatment device being equipped with such insert - Google Patents

Abstract

Removable water treatment insert for filtering jug domestic water consists of a cup-shaped cup (21A), containing a water treatment medium (26A) while being water A removable apron is attached to the cup-shaped container (21A) impermeable cover membranes (35A, 36A) which reside the open lid of the heated container (21A) as well as the outlet opening (24A) in the bottom of this cup-shaped container (21A). Outer surface the cup-shaped containers (21A ') are provided with a helical groove (37), formed by a curved portion (38) of this cup-shaped container (21A) in the proximity of the rim, and the circumferential flange (19A) down end of the neck portion (38). Removable cover membranes (35A, 36A) are mounted for storage purposes maintaining the moisture of the medium (26A) to treat the water stored in the water the cup cup space (21A). Should be a liner to be treated water used and installed in water treatment facilities are removable cover membranes (35A, 36A) removed and inserted screwed into the appropriate hole in the funnel base, with the circumferential flange / NA 'together with the funnel structure waterproof sealing.

Description

Water treatment insert for household water treatment equipment and household water treatment equipment equipped with this insert

Technical field

The invention relates to a water treatment cartridge intended for use in a domestic water treatment device, such as a water filter kettle, furthermore to a device for carrying such a water treatment cartridge in a container and a domestic water treatment device, in particular a water filter kettle equipped with such a water treatment insert.

BACKGROUND OF THE INVENTION

Water filtering kettles usually consist of a removable funnel that is carried on the edge of a deep container that is made by the kettle. The funnel is adapted to accommodate a water filter insert, which generally consists of a shaped container having inlet and outlet slots to allow water to enter the inner cavity of the insert containing the water treatment medium and re-exit the water. from this inner cavity.

In use, the insert is positioned in the funnel such that the inlet slits are opened into the chamber formed by the interior of the funnel while the outer slits are opened into the container under the funnel. If the unfiltered water is poured into the funnel, it flows through the liner where it is cleaned and then flows out. from the insert to the container. Both the liner and the water treatment medium are designed and arranged to ensure that the treated water will remain in the liner for a sufficient period of time sufficient to effect proper cleaning thereof.

The water treatment medium used in such liners typically comprises a particulate filter and may also contain granules or grains of adsorbent material such as activated carbon. Moisture is introduced into the water treatment medium during manufacture. This moisture helps to effectively filter and purify the water. It is therefore very important that during storage of the liner, it is avoided that the respective water treatment medium does not dry completely.

However, the problem with known inserts is that the inlet and outlet slots allow moisture to escape freely from the inserts during storage, thereby reducing the efficiency and effectiveness of the water treatment medium.

A known solution to the above problem is the packaging of water treatment inserts in preparation for sale in tight plastic containers. This procedure, however, increases the overall cost of manufacturing these inserts.

SUMMARY OF THE INVENTION

In accordance with a first aspect of the present invention, there is provided a water treatment cartridge for use in a domestic water treatment device, such as a water filter kettle, characterized in that the cartridge is characterized by the features set forth in the first claim.

• · • ·

Advantageous features of the water filter cartridge are claimed in the dependent claims 2 to 7.

In accordance with another aspect of the present invention, a domestic water treatment device, in particular a water filter kettle, is provided having a water treatment cartridge in accordance with said first aspect of the invention, wherein the removable cover means have been removed from the cartridge.

The use of a reticulated grid, usually a mesh, to cover the holes of a water filter cartridge is the subject of International Patent Application PCT / GB 97/02120, filed August 6, 1997 by Brita Water Filter Systems Limited. The netting may be made of metal fibers or a suitable plastics material and may have an intermediate diameter in the range of 50 μπι to 300 μm, preferably 80 μm to 200 μm.

An advantage of the water filter cartridge of the present invention is that the water treatment medium is maintained in a wet state until its use is required, without the need for expensive and laborious packaging of the inserts.

BRIEF DESCRIPTION OF THE DRAWINGS

The two types of water filter cartridge and the funnel for the water filter kettle in which the present invention is embodied will now be described by way of example only, with reference to the accompanying drawings, in which:

Fig. 1 shows a cross-section of a water filter kettle in which a funnel is mounted to carry a filter insert. Water, the funnel and liner being shown in a front view, and wherein the portion of the funnel carrying the liner is cut off to expose the liner lid so that a partial cut is made there;

Fig. 2 shows a view of the liner lid and the respective surrounding portion of the container as seen in the direction of arrow A of Fig. 1;

Fig. 3 is a cross-sectional view taken along line III-III in Fig. 2;

Fig. 4 is a view similar to Fig. 3 showing an opening in the funnel base adapted to accommodate another shape of the water filter cartridge; and Fig. 5 is a partial cross-sectional view of a water filter cartridge to be placed in

opening in the funnel, shown in FIG. 4, in condition fulfillment. Examples invention FIG illustrated kettle 10 filtering water, which is provided a funnel 11 that is fixed in it. This

the funnel 11 has a generally pot-like shape and is provided with a cylindrical side wall 12, a base 13 and an outwardly extending peripheral flange 14 formed around its edge. The funnel 11 is housed in the interior of the deep container formed by the water filter kettle 10, the peripheral flange 14 of which is seated at the edge of the deep container.

· Itt · · · · · · · · · · · · ··· ·

The base 13 of the funnel 11 slopes radially inwardly, that is, away from the peripheral flange 14 and towards the opening 15 at its center. This opening 15 is formed by a tubular portion 16 integral with the base 13 and extending therefrom away from the peripheral flange 14. The end of the tubular portion 16, which is spaced from the peripheral flange 14, forms a radially inwardly facing flange 17. The helical groove 18 is formed in an opening in the tubular portion 16 between the base 13 and the inwardly facing flange 17.

This radially inwardly facing flange 17 forms an annular seat for a radially outwardly extending peripheral flange 19 that is formed around the edge of the cup-shaped container 21. The cup-shaped container 21 has a side wall 22 that tapered toward the base 23. In FIG. it is shown that the base 23 is provided with an aperture 24 formed therein, the aperture 24 being covered by a mesh grid 25 which, for example, forms a mesh.

A water treatment medium 26 is contained in the cup-shaped container 21. The upper end of the cup 21 is open and serves as an entrance to the cup 21. The opening 24 serves as the exit of the cup 21. When these components are so installed, the cup 21 containing the water treatment medium 26 serves as a water filter cartridge, but its open inlet is covered by a mesh member 27 which is screwed into an opening in the tubular portion 16 and which retains the peripheral flange 19 of the cup-shaped container 21 in its annular fit formed by the flange 17.

• 4 • ♦ ··

I 4 4 4 4 4 · 4 4

94

The mesh member 27 has the shape of an inverted cup and includes a crown portion 28 and a respective housing portion 29. Both the crown portion 28 and the housing portion 29 are provided with a series of slots 30 formed therein. The radially outwardly extending annular flange 32 is integrally formed with the housing portion 29 and is positioned at a suitable distance from the edge of the cup-shaped mesh member 27 so as to abut a corresponding annular arm 33 formed at the upper end of the tubular portion 16 of the funnel 11. the rim abuts the peripheral flange 19 as shown in FIG. 3.

An external helical thread that engages the helical groove 18 is formed on the outer surface of the skirt member 29 between the annular flange 32 and the rim of the mesh-like member 27 in the shape of a cup.

The seating of the annular flange 32 in the annular arm 33, the seating of the peripheral flange 19 on the annular flange 17 and the seating of the cup-shaped member 27 on the peripheral flange 19 ensure that there is a substantially watertight seal between the inner space of the insert formed by the cup. and the interior of the cup-shaped sheath portion 29 on the one hand, and the interior of the funnel 11 and the deep container underneath the funnel 11 on the other hand.

The spikes 34, which depend on the structure of the mesh member 27, protrude into the interior of the cup-shaped container 21 through an open opening that forms its entrance.

Replacing the water treatment medium 26 when this need arises is a very simple and simple matter. The mesh member 27 is unscrewed and removed. The cup-like container 21 is then lifted upward through an opening in the tubular portion 16. The replacement insert is inserted in its place, whereupon the mesh member 27 is also screwed back into place.

In accordance with the present invention, for storage purposes, the respective inlet formed by the upper end of the cup 21 and the aperture 24 in its base 23 is covered by a removable lid 35 and 36 which form a removable membrane made, for example, of foil or plastic. This removable membrane 35 and 36 is sealed to the cup-shaped container 21 such that the moisture in the water treatment medium 26 contained therein is maintained during insertion of the insert.

Preferably, each removable lid 35 and 36 is provided with a portion by which it can be easily gripped by the fingers, which facilitates its removal when the insert has to be used. However, the arrangement of the spikes 34 in the mesh-like member 27 eliminates the need to remove the cap 35 from the inlet of the cup-like container 21 prior to installation. This is because, as shown in FIG. 3, the spikes 34 pierce the membrane 35 when the mesh-like member 27 is screwed into position to engage the peripheral flange 19 in its annular fit. For the sake of clarity, the diaphragm 36 is shown in phantom in FIG. 3 in its position overlapping the outlet opening 24.

Any shape of lid can be used, provided that when the lid is attached over the inlet and / or outlet of the cup-shaped filter cartridge 21, it is able to prevent leakage of moisture from the medium. 26 for treating the water contained in the liner, which can be removed and opened if necessary.

For example, the lid may be a member clipped by a clip or a clip. Such a member, clipped or clipped, may be adapted to be reattached to the insert after use. This is particularly advantageous when the water treatment medium 26 has to be recycled as such since reattaching the clamp or clip clip member facilitates storage of the used water treatment medium 26 in the liner until it has to be recycled. A further advantage is that there is no risk of spillage of the water treatment medium 26 when the insert with the clip or clip clip is removed.

The insert installation means embodying the present invention is not limited to mounting in the removable funnel 11 of the water filter kettle 10, as described above with reference to Figures 1 to 3.

A water filter kettle has been proposed in which the interior of the deep container formed by the kettle is divided into two parts by means of a wall extending over the interior space, the form of installation described above with reference to FIGS. FIG. 3 will be very suitable for use in this arrangement since the liner is replaced from above.

Another type of insert in which the present invention is embodied is designed to be screwed from below into a tubular

··· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · creates a hole in the funnel base. Fig. 4 shows such an installation, and Fig. 5 shows the replacement of the liner and its attachment. The components of the apparatus shown in Fig. 4 and the liner components shown in Fig. 5 which are similar to the corresponding components of the apparatus described above with reference to the Figures 1 to 3 are denoted by the same reference numerals. but with the letter A.

The peripheral flange 19A of the container 21A is formed at a location in the side wall 22A which is spaced from the rim of the cup-shaped container 21A. A spiral groove 37 is formed on the outer surface of that portion of the side wall 22A that forms the neck portion 38 and which lies between the rim of the container 21A and the peripheral flange 19A. The opening in the tubular portion 16A, which forms the opening 15A in the base 13A of the funnel 11A, forms a helical thread that engages with the helical groove 37.

FIG. 5 shows a container 21A mounted with removable cover membranes 35A and 36A. In order to install the replacement container 21A, the removable cover membranes 35 and 36 are peeled off by finger portions of those portions that are adapted for this purpose, then the neck portion 38 is screwed into the hole in the tubular portion 16A until the peripheral flange 19A contacts its lower end; a waterproof seal occurs.

The mesh-like member 27A, having the shape of an inverted cup, overlaps the insert inlet, which is formed by an open opening in the upper end of the container 21A. This mesh-like member 27A is similar to the mesh-like member 27 described above with the aforementioned mesh-like member 27A. 1 to 3, but does not include those portions of the housing portion 29 that project downwardly below the annular flange 32. The annular flange 32A of the mesh member 27A abuts the respective annular arm 33A to provide a watertight seal.

The mesh size of the mesh 25 and 31 is sufficient to allow water to pass through the mesh 25 and 31, but is at the same time smaller than the particles of the water treatment medium 26, so that during operation there is leakage of the particles 26 from the container 21 and 21A avoided. Usually, an intermediate diameter of about 50 gm to 300 gm is chosen, preferably in the range of 80 μπι to 200 μπι.

As an alternative to the use of openings that are covered by a reticulated mesh, such as netting, narrow slits may be used and the slits must be less than the particle size of the water treatment medium 26 such that the slits prevent the particles from passing through these slits.

Although in the embodiments described above with reference to the accompanying drawings, the containers are screwed into an opening formed in the tubular part of the funnel, it will be understood that any other suitable means for connecting the liner and the funnel may be used. For example, the liner may be adapted to be pushed or snapped into a rigid connection in an opening in the funnel base.

In use, unfiltered water is poured into the funnel space 11, 11A. This water flows through the mesh-covered slots 30, 30A in the mesh-like member 27, 27A and then " 99 "

9 9 9 9 9 9 9 9 9 9

9 * 9 999 999 999

Via water treatment medium 26, 26A in the cup-shaped container 21, 21A. In the case of turbulent backflow of water in the cup-shaped container 21, 21Ά caused by pouring water into the space of the funnel 11, 11A, the seal between the mesh member 27, 27A and the base 13, 13A of the funnel 11, 11A ensures that water can only move upwards into the funnel space 11, 11A through the mesh 31, 31A, thereby preventing the water treatment medium particles 26, 26A from escaping into the funnel space 11, 11A.

Once the water has been filtered by passing through the water treatment medium 26, 26A, it then exits the liner through the mesh 25, 26A at its bottom. The presence of this mesh 25, 25A prevents the particles of medium 26, 26A from entering the portion of the interior of the vessel under the funnel 11, 11A, which already contains filtered water.

The cup-like container 21, 21A and / or the funnel 11, 11 'described above can be made by molding. The mesh 25, 25A, 31, 31A may be incorporated directly into the cup-like container 21, 21A or the mesh-like member 27, 27A already during the pressing process, for example in accordance with the solution disclosed in PCT / GB International Patent Application. 97/02120.

The advantage of using a removable cap water filter cartridge in accordance with the present invention in a funnel mounted via an outlet member or other similar method in a water filter kettle is that the cost of replacing the water filter cartridge is much lower as each such an insert must only be

V φ φ V V V V V V φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ navíc navíc navíc navíc navíc φ φ

-39

Claims (9)

• · PATENTOVÉ Claims • β β ► · »β β β β β« A water treatment cartridge for use in a domestic water treatment device, such as a water filter kettle, the cartridge comprising a container having an inlet and an outlet, between which a water treatment medium contained in the container is placed, removable cover means are secured to the receptacle to cover the inlet, said removable cover means being impermeable to moisture, and wherein other removable cover means which are also impermeable to moisture are arranged to cover the outlet wherein the arrangement is such that the water treatment medium is maintained in a moist condition within the container space by means of removable cover means and other removable cover means until the liner has to be used for a domestic water treatment device when the cover means are removable and others removable cover means removed. claim 1 each of 2. A water treatment cartridge according to claim 1, wherein the removable cover means and the other removable cover means comprise a removable membrane. Water treatment cartridge according to claim 2, characterized in that the removable membrane is made of a foil material. 4. The liner for the marking membrane is made of a plastic film. water treatment according to claim 2, wherein said removable A water treatment cartridge according to claim 1, wherein the removable cover means and the other removable cover means are provided with a clamp member. Water treatment cartridge according to any one of claims 1 to 5, characterized in that the inlet and / or outlet is provided with a plurality of openings formed in the container, each opening being sized to prevent passage of the water treatment medium which is in the form of particles. Water treatment insert according to any one of claims 1 to 6, characterized in that the container is cup-shaped and is provided with means by which it can be disposed of in a domestic water treatment device starting from its edge and in use. of the insert, the opening into the cup-shaped container is opened and forms an inlet which is covered by removable cover means until the insert has to be used. A domestic water treatment device, in particular a water filter kettle, having a water treatment insert according to any one of claims 1 to 7, characterized in that the removable cover means and other removable cover means have been removed from the insert. 2> 1 / • 7/4 GIANT. 1 OP2 / 4 99 9 9 * 9 · 9 999 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9