KR20000049271A - A water treatment cartridge for in domestic water treatment apparatus and domestic water treatment apparatus including such a cartridge - Google Patents

Abstract

PURPOSE: A replacement water treatment cartridge for a domestic water filter jug is provided, which is characterized by packaging water treatment cartridge in sealed plastic bag thereby to prevent efficiency-down effect caused by spilling of moisture from the cartridge. CONSTITUTION: A replacement water treatment cartridge for a domestic water filter jug comprising a cup-shaped receptacle (21A) containing water treatment medium (26A) and fitted with a removable water impervious membrane (35A, 36A) which covers both the open top of the receptacle (21A) and an outlet (24A) in the bottom of the receptacle (21A). The exterior of the receptacle (21A) has a spiral groove (37) formed in a neck portion (38) thereof near its brim, and a peripheral flange (19A) at the lower end of that neck portion (38). The membranes (35A and 36A) are fitted for storage to retain moisture within the water treatment medium contained within the receptacle (21A). When the cartridge is to be installed, the membranes (35A and 36A) are removed and the cartridge is screwed into a respective opening in the base of a hopper, the peripheral flange (19A) forming a water tight seal with structure of the hopper.

Description

A water treatment cartridge for in domestic water treatment apparatus and domestic water treatment apparatus including such a cartridge}

Generally, the water treatment jug includes a removable hopper supported at the edge of the deep container formed by the jug.

Hoppers employed to carry water filter cartridges typically include containers shaped to have slots for inlet and outlet for entry and exit of water in the inner hollow containing the water treatment medium.

In use, the cartridge is positioned in the hopper such that the inlet slot opens into the chamber defined by the interior of the hopper and the outerlet slot opens into the container beneath the hopper.

Therefore, when unfiltered water flows into the hopper it flows through the purified cartridge and then exits the cartridge from the cartridge. The cartridge and water treatment medium ensure that the dwell time of water in the cartridge is sufficient for proper tableting.

The water treatment medium used in the cartridge typically comprises one particulate filter and may also comprise granules of adsorbent material such as activated carbon. Moisture enters during treatment of the water treatment medium. This moisture helps the effective performance of water filtration and purification.

Therefore, it is important that the water treatment medium does not dry out during storage in the cartridge. However, a conventional cartridge problem is that the inlet and outlet slots prevent moisture from escaping from the cartridge while storing moisture, thereby reducing the efficiency of the water treatment medium. The open solution to this problem is to package the water treatment cartridge for sale in a sealed plastic bag.

The present invention relates to a water treatment cartridge for a household water treatment device such as a water filter jug, an apparatus for transporting the water treatment cartridge in a receptacle, and a domestic water treatment device, and more particularly, to a water filter jug-in domestic water treatment device mounted to the water treatment cartridge. .

Two forms of a water filter cartridge and a hopper for a water filter jug embodied in the present invention will be described below with reference to the accompanying drawings.

1 is a cross-sectional view of the water filter jug with mounted hopper and when supporting the water filter cartridge, the hopper and cartridge are shown in front view separately from the portion of the hopper that is cut out by exposing the lid of the cartridge and supporting the cartridge shown in cross section. .

FIG. 2 is a view of the lid of the cartridge and the peripheral portion of the hopper as shown by arrow A in FIG.

3 is a view taken along line III-III in FIG.

FIG. 4 is a view similar to FIG. 3 showing an opening in the base of a hopper applied for receiving another form of water filter cartridge,

FIG. 5 is a partial side view of the water filter cartridge for mounting the hopper opening shown in FIG. 4 in a storage environment.

An embodiment of the present invention is to provide a water treatment cartridge for a domestic water treatment apparatus, such as a water filter jug, a cartridge as claimed in claim 1.

Preferred examples of such water filter cartridges are claimed in claims 2 to 7.

Another embodiment of the present invention is to provide a household water treatment apparatus, in particular a water filter jug, mounted on the water treatment cartridge of the first embodiment of the present invention, wherein the removable cover means of the cartridge is removed.

The provision of a mesh screen, ie a typical mesh, to cover the openings in the water filter cartridge forms the subject of the international application GB 97/02120 filed August 6, 1997 by the Brita Water Filter Systems company. The mesh may be made of metal filament or a suitable plastic material and may have a gap size in the range of 50-300 micrometers, preferably 80-200 micrometers.

The advantage of the water filter cartridge of the present invention is that the packaging of the water treatment medium does not need to be expensive and bulky and the moisture is preserved until operation is required.

1 shows a water filter jug 10 having a hopper 11 mounted thereon. The hopper 11 is generally cup-shaped and has a circular sidewall 12, a base 13 and a peripheral flange 14 extending outwardly configured around the rim. The hopper 11 is supported in the deep vessel interior configured by the water jug 10 by having a peripheral flange 14 attached to the vessel rim thereof.

The base 13 of the hopper 11 is inclined in the radial direction away from the center 14 to the opening 15 from the flange 14. The opening 15 is constituted by a tubular portion 16 which is joined together and extends away from the bottom portion 13 away from the flange 14. The end of the tubular portion 16 away from the flange 14 constitutes an inwardly radial flange 17.

The spiral groove 18 is configured at the inside diameter of the tubular portion 16 between the base portion 13 and the inward flange 17. The flange 17 provides an annular sheet for the outer radially extending peripheral flange 19 constructed around the rim of the cup-shaped receptacle 21. The receptacle 21 has a side wall 22 tapering to the base 23.

3 shows that the base 23 has an opening 24 formed therein and the opening 24 is covered by the reticulated screen 25 like a mesh. The receptacle 21 includes a water treatment medium 26. The upper end of the receptacle 21 is open and serves as the inlet of the receptacle 21.

The opening 24 serves as an outlet for the receptacle 21. The receptacle 21 with the water treatment medium 26 contained therein when installed is used as a water filter cartridge, but its opening inlet or inlet is screwed into the bore of the tubular portion 16 and flanged ( It is overlaid by the screen member 27 which traps the peripheral flange 19 of the receptacle 21 on the annular sheet constituted by 17.

The screen member 27 takes the form of an inverted cup consisting of a crown portion 28 and a subordinate skirt portion 29. Each of the crown portion and skirt portion has a continuous slot 30 therethrough.

The slot 30 is covered by a mesh 31. The annular flange 32 projecting in the outer radial direction is constructed integrally with the skirt portion 29 and the tubular portion of the hopper 11 when its rim is fixed on the peripheral flange 19 as shown in FIG. There is a certain distance from the rim of the cup-shaped screen member by a suitable distance, such as a sheet in the corresponding annular root face 33 configured at the upper end of 16).

The outer thread that engages the spiral groove 18 is configured on the outer surface of the skirt portion 29 between the annular flange 32 and the rim of the cup-shaped screen member 27.

The seating of the annular flange 32 on the peripheral flange 19 on the annular flange and on the annular root face 33 of the rim of the cup-shaped screen member 27 on the peripheral flange 19 is sufficient waterproof, on the one hand the receptacle ( Between the inside of the cartridge constituted by 21 and the inside of the cup-like skirt portion 29, on the other hand between the inside of the hopper 11 and the container under the hopper 11.

The vanes 34 retract from the structure of the screen member 27 and into the interior of the receptacle 21 through an opening inlet constituting its inlet.

If necessary, the replacement of the water treatment medium 26 is simple. The screen member 27 is screwed out and removed. The receptacle 27 is then lifted through the aperture of the tube portion 16. The replacement cartridge is inserted instead and the screen member 27 is screwed in.

According to the invention, the inlet configured at the upper end of the cup-shaped receptacle 21 for storage purposes and the opening 24 at the base 23 by which the removable cover 35 is a thin film configured for the example of foil or plastic. , (36).

The thin films 35, 36 are sealed with a receptacle 21 and consequently are retained in the water treatment medium 26 contained therein during storage of the cartridge. Each removable cover 35, 36 suitably has a portion that can be easily held by hand to facilitate removal when the cartridge is in operation.

However, the provision of the vanes 34 in the screen member 27 obviates the need to remove the cover 35 from the inlet of the receptacle 21 prior to installation. This is because the wing 34 penetrates the thin film 35 as the screen member 27 is turned into a portion to wind the peripheral flange 19 onto the annular sheet as illustrated in FIG. 3.

For convenience the thin film 36 is shown in the chain marked as in FIG. 3 in a position covering the outlet opening 24.

When any type of cover is mounted over the inlet and outlet of the receptacle 21 of the cartridge, it is possible to operate if it can prevent moisture from escaping from the water treatment medium contained in the cartridge and can be selectively opened.

For example, the lid is a clipped member and the clipped member may be applied to be reattached to the cartridge after use. This is of particular advantage when the water treatment medium is recycled as it facilitates storage of the water treatment medium used in the cartridge until the reattachment of the member secured with such a clip is recycled.

Another advantage is that the water treatment spaller can be avoided when extracted with a member secured by a clip reattached to it.

The method of installing a cartridge embodying the present invention is not limited to being attached into the removable hopper of the water filter jug as described above with respect to FIGS.

In the form of a water filter jug divided into two compartments by a wall that extends across the interior of the deep container constituted by a jug has been proposed in couples and the installation form described above with respect to FIGS. Will be suitable for use in that form since the replacement cartridge has been described above.

Another form of cartridge in which the present invention is embodied will be designed for screwing from below into a tube portion forming an opening in the bottom of the hopper. 4 illustrates such an installation and FIG. 5 illustrates a replacement cartridge for mounting therein.

The parts shown in FIG. 4 and the parts of the cartridge shown in FIG. 5 which are similar to the corresponding parts of the installation described above with respect to FIG. 1 to FIG. 3 are given only by the same reference characters as the subscript A.

A peripheral flange 19A of the receptacle 21A is made on the side walls 22A at regular intervals at the edge of the cup-shaped receptacle 21A. The spiral groove 37 constitutes the neck portion 38 and is formed at the outer surface of that portion of the side wall 22A that extends between the rim of the receptacle 21A and the peripheral flange 19A.

The bore of the tube portion 13A constituting the opening 15A at the bottom surface 13A of the hopper 11A forms a screw that engages with the spiral groove 37.

5 shows a receptacle 21A mounted on a removable covering membrane. In order to install the replacement cartridge 21A, the cover films 35A and 36A are peeled off by engaging the fingers of the parts for that purpose and the neck part 38 prevents the peripheral flange 19A from entering the water. Screw into the bore of the tubular section 16A until it snaps into the lower end.

The inverted cup-shaped screen member 27A extends with respect to the inlet of the cartridge constituted by the opening inlet at the upper end of the receptacle 21A. This screen member 27A is similar to that described above with respect to FIGS. 1 to 3 but does not include parts of the skirt portion that depend under the annular flange 32.

The annular flange 32A of the screen member 27A is fixed to each annular root surface 33A to constitute a waterproof chamber.

The gap sizes of the meshes 25 and 31 are sufficient to allow water to flow therethrough while being smaller than the particles of the water treatment medium 26 at the same time and as a result the receptacles 21, 21A in operation. It prevents such particles from exiting.

Normally a gap diameter of 50-300 micrometers is chosen. It is recommended that it be selected in the 80-200 micrometer range.

As an alternative to gap applications covered by mesh screens such as meshes, narrow slots can be used and the width of the slots is smaller than the size of the particles so that the slots prevent the passage of particles through them.

In the implementation described above with respect to the drawings, it should be understood that any suitable method of connecting the cartridge and the hopper may be used, even if the receptacle is threaded into the opening formed by the tubular portion of the hopper.

For example, the cartridge must be applied to push or the snap must be mounted to snap into the opening of the base hopper.

In operation, unfiltered water is poured into the membranes of the hoppers 11 and 11A. The water is passed through the meshed slots 30, 30A in the screen members 27, 27A and then through the water treatment media 26, 26A in the receptacles 21, 21A. Flow.

As there is a rough backflow of water in the receptacles 21, 21A, the bases of the screen members 27, 27A and the hoppers 11, 11A, 13A, 13A as the water pours into the hopper membrane. The water loaded between) makes it possible to move upwards only through the meshes 31 and 31A into the hopper compartment and thereby to block particles in the water filter media 26 and 26A that are moving into it. .

If water is filtered through the water filter media 26, 26A then it leaves the cartridge through the mesh 25, 25A at the bottom. The presence of the meshes 25, 25A prevents the water treatment media 26, 26A from entering the components inside the vessel under the hoppers 11, 11A containing the filtered water.

The receptacles 21, 21A and / or hoppers 11, 11A described above may be configured by molding. The meshes 25, 25A, 31, 31A are in the receptacle 21, 21A or screen member 27, 27A during molding in accordance with the disclosure of the international application PCT / GB97 / 02120. To be integrated.

The advantage of using a water filter cartridge with a removable cover in accordance with the invention in a similar installation to a hopper or water filter jug mounted to an outletlet member is that each such cartridge is additionally removable, not a permanent closure or inlet portion. The replacement cost of the water filter cartridge is reduced when provided only.

Claims (8)

In a water treatment cartridge for household water treatment apparatus such as a water filter jug, The cartridge comprises a receptacle having an inlet and an outlet between the water treatment medium contained within the receptacle, the receptacle being equipped with removable cover means for the inlet to be covered and the removable cover means free of moisture and An additional removable cover means which does not seep moisture is provided for the outlet to be covered, the arrangement of which is treated with water until the cartridge is required for domestic water treatment devices when the removable cover means and the additional removable cover means are removed. A water treatment cartridge, wherein the medium is adapted to be kept in humid conditions in the receptacle by removable cover means and further removable cover means. A water treatment cartridge according to claim 1, wherein each of said removable cover means and said further removable cover means comprises a removable membrane. 3. The water treatment cartridge of claim 2 wherein said removable membrane is comprised of a foil material. 3. The water treatment cartridge according to claim 2, wherein said removable membrane is a plastic film. 2. The water treatment cartridge according to claim 1, wherein each of said removable cover means and said further removable cover means comprises a component secured by a clip. The method according to any one of claims 1 to 5, wherein the inlets and / or outlets comprise a plurality of apertures formed in the receptacle, each of the apertures being sized to prevent passage of the water treatment medium in the form of granules. Water treatment cartridge characterized in that. 7. The receptacle of any of claims 1 to 6, wherein the receptacle is provided in a cup-shaped and supported means in a household water treatment device so as to depend on the rim when the cartridge is being used, and the inlet of the cup-shaped receptacle is A water treatment cartridge characterized by opening and configuring an inlet covered by removable cover means until the cartridge is required for operation. 8. A household water treatment apparatus equipped with the water treatment cartridge according to any one of claims 1 to 7, characterized in that the removable cover means and further removable cover means of the cartridge are removed, in particular a water filter jug. Household water treatment device.