DE102017117235A1 - Water filter - Google Patents

Abstract

The invention relates to a table water filter, which comprises a container and a filter cartridge. According to the invention, the cartridge is movable by means of a drive through the container, wherein the cartridge is flowed through by the movement of the water to be treated.

Description

Field of the invention

The invention relates to a table water filter for the treatment of drinking water. Furthermore, the invention relates to a cartridge for a table water filter.

Background of the invention

In practice, for filtering, in particular with a cartridge, which comprises an ion exchange material, usually gravity-operated table water filters are used.

Such a water filter comprises a container for storing the treated water. On the container, a funnel is placed, in turn, the provided with a sealing edge cartridge is used. Due to gravity, the water now runs through the cartridge and collects in the container. A disadvantage of such water filter devices known from practice is that a relatively large volume is required for this purpose. So the funnel must be at least as large as the volume of the container, which is used to collect the treated water. This results in a large total volume, which is particularly disadvantageous when the table water filter is to be stored in the refrigerator.

Next is often disadvantageous in known table water filters, the long cycle time of the water. Also known from the art table water filter, which are exclusively gravity-driven, usually not with an ultrafilter, especially a hollow fibers comprehensive ultrafilter are provided because the passage resistance of such an ultrafilter is so high, so that in a purely gravity-driven operation, the water even not or only very slowly through the cartridge would run.

The publication WO 2015/121349 A1 In contrast, provides a water filter, which includes an electric pump. The water in a tank can be circulated by the pump. So no hopper is required. If, however, not only softening of the water, but also sterilization is to be carried out by the water filter, the circulation is disadvantageous in that not all the volume is passed through the filter cartridge in one go.

In another embodiment, the water is pumped by an electrically operated pump from a storage container, such as a funnel, into a storage container. This again requires a device whose internal volume is at least twice as large as the volume of the treated water.

Object of the invention

The invention is based on the object to further reduce the disadvantages of the prior art.

It is a particular object of the invention to provide an easily manageable, compact designed water filter device, especially for the household sector.

Summary of the invention

The object of the invention is already achieved by a table water filter and by a cartridge for a table water filter according to one of the independent claims.

Preferred embodiments and further developments of the invention can be found in the subject matter of the dependent claims, the description and the drawings.

The invention relates to a table water filter, which comprises a container and a filter cartridge.

A table water filter is understood to mean a device which can be moved freely by the user and which is designed in particular in the form of a jug.

The container serves at least the storage of the treated water. The filter cartridge serves for the treatment of the water, whereby the treatment is to be understood far.

Thus, the filter cartridge may comprise filter elements for the removal of suspended matter, an ion exchange material, activated carbon and / or an ultrafilter, in particular an ultrafilter of hollow-fiber membranes.

According to the invention, the cartridge is movable by means of a drive through the container, wherein the cartridge is flowed through by the movement of the water to be treated.

The basic principle of the invention is thus based on the fact that not the water is set in motion and pumped either by gravity or by a pump through the cartridge, but that the cartridge itself is moved by the water.

It is provided in particular that the cartridge comprises at least one seal, which bears against a wall of the container, which is preferably designed as a cylinder, in particular a circular cylinder. When moving the cartridge through the container so the water can not escape, but must forcibly flow through the cartridge.

However, it is quite within the scope of the invention that the seal or the housing of the cartridge comprises a bypass, so that only a part of the water flows through the cartridge. The bypass can be designed in particular adjustable. This embodiment of the invention is particularly intended for table water filters which are provided with a cartridge comprising an ion exchange material. The bypass can be used to set the hardness of the water to be treated.

By the invention, the entire volume of the container, which serves to store the treated water, can be used simultaneously as a filling space for the water to be treated.

The table water filter according to the invention can therefore be designed to be particularly compact. In particular, this has a total volume of less than 150%, preferably less than 125% of the volume of the treated water.

In a preferred embodiment of the invention, the drive is designed as a spindle drive. By means of a spindle, which is preferably arranged substantially centrally in the container, a rotational movement can be converted into a translational movement in a simple manner and thus the cartridge can be moved through the container.

The cartridge is preferably moved from top to bottom. Since the water can not escape in this direction of movement, it is necessary to move the cartridge with relatively high force through the container. As a result, a minimum cycle time can be achieved.

The drive can be actuated in particular by means of a crank, which is preferably arranged on a lid of the table water filter.

In particular, it is, as provided in a preferred embodiment of the invention, a wind-up drive.

This can be prestressed, in particular windable, be formed. For this purpose, the drive may comprise, for example, a spiral spring, which is pulled together when mounting and thus serves as an energy store.

By actuating an actuator, the drive is released, in particular, the spindle rotates and the cartridge is moved through the container.

In another embodiment of the invention, it is also conceivable to actuate the spindle by motor.

The cartridge is preferably locked in biased, in particular wound, drive and is released only by pressing an actuator.

The spindle is mounted in particular in a lid of the table water filter and preferably axially connected to a crank.

As an actuator to release the wound drive, in particular the crank itself can be used. In particular, as provided in one embodiment of the invention, the user can depress the crank and release the wound drive so that the spindle rotates.

The invention further relates to a cartridge which is designed for the table water filter described above.

In particular, the invention relates to a cartridge having a passage, in particular a thread, for a spindle and a peripheral seal.

The housing of the cartridge has a water-permeable top and bottom, so that when moving the cartridge through the container, the water flows from bottom to top through the cartridge.

list of figures

• 1 zeigt in einer perspektivischen Ansicht ein Ausführungsbeispiel eines erfindungsgemäßen Tischwasserfilters.
• 2 bis 4 sind Schnittansichten des Tischwasserfilters in verschiedenen Betriebszuständen.
• 2a und 4a sind Schnittansichten von Komponenten des Rastmechanismus, um den Antrieb vorzuspannen.
• 3a ist eine Schnittansicht des Deckels.

The object of the invention is described below with reference to an embodiment with reference to the drawings 1 to 4 be explained in more detail.

• 1 shows a perspective view of an embodiment of a table water filter according to the invention.
• 2 to 4 are sectional views of the table water filter in different operating conditions.
• 2a and 4a are sectional views of components of the detent mechanism to bias the drive.
• 3a is a sectional view of the lid.

Detailed description of the drawings

1 is a perspective view of an embodiment of a table water filter 1 ,

The table water filter 1 includes a container 2 which is cylindrical in this embodiment, in particular circular cylindrical, is formed. The container 2 may preferably take up a quantity of water of from 100 ml to 5 l, more preferably from 200 ml to 2 l.

The container 2 is designed as a pot, which has a handle 3 and a pour spout 4 includes.

Next includes the table water filter 1 the removable lid 6 ,

On the lid 6 is a crank 5 attached, which has a handle 7 includes.

About the crank 5 For example, the drive described below may be used to move the cartridge through the container 2 operated, in particular reared, be.

Next, the lid 6 a change indicator 24 include, for example, is designed as a display, via which is signaled that the filter cartridge must be replaced.

The change indicator 24 For example, it can calculate the service life of the filter cartridge based on time and / or can work with the drive, in particular with the crank 5 be coupled. About the number of revolutions of the crank 5 can be concluded on the amount of filtered water.

2 is a sectional view of the in 1 illustrated table water filter 1 ,

In this sectional view it can be seen that in the center of the container 2 a spindle 8th runs.

The spindle 8th serves to move the filter cartridge 9 through the container.

This includes the filter cartridge 9 A mother 13 which rotatable in the housing of the filter cartridge in this embodiment 9 is inserted, so that the cartridge 9 not through the spindle 8th is set in rotation.

Next includes the filter cartridge 9 a marginal seal 14 which is formed in this embodiment as a lip seal and over which the housing of the cartridge 9 opposite the container 2 is sealed at the edge.

Will now the filter cartridge 9 over the spindle 8th from top to bottom through the container 2 moved, the treated water inevitably flows over the water-permeable bottom 11 through the interior 10 the filter cartridge 9 and leaves the filter cartridge 9 through the water-permeable top 12 ,

The interior 10 the filter cartridge 9 is filled with a filter material, for example an ion exchange material and / or activated carbon. Next, the filter cartridge 9 also include an ultrafilter (not shown).

To the spindle 8th will drive the spindle 8th with the crank 5 reared.

This is in the lid 6 a coil spring 15 arranged, which is shown here only schematically and which on the spring retainer 18 is hooked, and which with the spindle 8th connected inner housing 25 connected is.

Now the user turns on the crank 5 That's how the coil spring becomes 15 curious; excited.

Due to a locking mechanism 16 can the crank 5 when winding only be turned in one direction and does not turn back on its own.

2a is a sectional view taken along the line AA 2 , in which the locking mechanism can be seen.

A polygonal, square-shaped in this embodiment, wave 17 is about locking elements (similar to a ratchet) when turning the crank 5 recorded.

So the user can use the cartridge 9 over the crank 5 move up to where the cartridge is 9 then lingers in a latched state.

By actuating an actuator, in this embodiment by pressing the crank 5 , becomes the latching mechanism 16 released and the cartridge 9 is about that of the coil spring 15 driven spindle 8th moved down.

In the inner housing 25 there is a spring 19 , which is designed as a helical spring and which the crank 5 pushes upwards so that the position of the latching mechanism shown here 16 the basic position is.

The lid 6 includes at least one edge seal 20 , by means of the lid 6 in the container 2 is jammed so that it is not pushed by the drive up.

The underside of the lid 6 includes at least one passage 21 over which the water to the spout 4 can flow.

The spiral spring 15 is on the other hand inside the lid 6 and does not come in contact with the water.

The drive is preferably configured such that the user must rotate the crank between 3 and 30 times, preferably between 5 and 15 times, in order to drive the drive, the filter cartridge 9 is moved from a lower to an upper position.

3 shows in a sectional view how the filter cartridge 9 was completely moved up by pulling the drive.

The cartouche 9 lies on the lid 6 on and the drive is biased.

3a is a sectional view taken along the line BB of 3 ,

It can be seen that the lid has a receiving space 22 for the coil spring (not shown), which on the spring receptacle 18 is hung.

The coil spring is with the inner housing 25 connected.

The inner case 25 in turn has a recording room 23 for the spring with which the crank is pushed upwards ( 19 in 2 ).

To the recording room 22 for the coil spring are a plurality of passages 21 arranged over which the water towards spout 4 can flow.

4 is another sectional view of the table water filter 1 ,

In this sectional view is the table water filter 1 shown during operation, so while the cartridge 9 over the spindle 8th is moved down.

For this purpose, the user has previously as the actuator crank 5 depressed. The crank 5 is doing against the spring preload of the spring 19 in the recording room 23 sits, moves.

4a is a sectional view taken along the line CC of 4 ,

In this sectional view is again the locking mechanism 16 shown.

It can be seen that after depressing the crank 5 the seated in the locking mechanism portion of the shaft 17 is formed around, causing the shaft 17 , and thus the spindle driven by the spiral spring 8th turns and the cartouche 9 moved down.

Next is the locking mechanism 16 Preferably, such that, for example, by the angular portion of this shaft 17 axially positively secured, this in the depressed position of the crank 5 dwells, so that the user does not constantly on the crank during the entire filtering process 5 must press.

By turning the crank 5 in the opposite direction, this lock is released again and the crank 5 moves in the 2 and 3 shown upper starting position back, in which the drive can be mounted.

By the invention, a well manageable and compact designed water filter device could be provided.

LIST OF REFERENCE NUMBERS

1

Water filter

2

container

3

Handle

4

spout

5

crank

6

cover

7

Handle

8th

spindle

9

filter cartridge

10

inner space

11

bottom

12

top

13

mother

14

poetry

15

spiral spring

16

locking mechanism

17

wave

18

spring mount

19

feather

20

poetry

21

passage

22

accommodation space

23

accommodation space

24

change indicator

25

inner housing

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 2015/121349 A1 [0005]

Claims (10)

Table water filter, comprising a container and a filter cartridge, characterized in that the cartridge is movable by means of a drive through the container, wherein the cartridge is flowed through by the movement of the water to be treated. Table water filter according to the preceding claim, characterized in that the drive is designed as a spindle drive. Table water filter according to one of the preceding claims, characterized in that the drive by means of a preferably arranged on a cover crank operable, in particular windable, is. Table water filter according to one of the preceding claims, characterized in that the drive is prestressed, in particular windable, is formed, in particular by means of at least one coil spring. Table water filter according to the preceding claim, characterized in that the cartridge is locked in biased drive. Table water filter according to one of the preceding claims, characterized in that the container is cylindrical, wherein the cartridge has a peripheral seal and a flow-through of the water to be treated housing with a water-permeable underside and top. Table water filter according to one of the preceding claims, characterized in that the drive comprises a spindle mounted in a cover, wherein the spindle is movable via a crank arranged on the lid. Table water filter according to the preceding claim, characterized in that the drive comprises a lid arranged in the biasing mechanism, which is via a handling member, in particular via the crank, is free, that the cartridge is moved by the biased drive through the container. Cartridge adapted for a table water filter according to one of the preceding claims. Cartridge according to the preceding claim, characterized in that the cartridge comprises a passage for a spindle and a peripheral seal, wherein the housing of the cartridge comprises a water-permeable top and bottom, and / or that the cartridge is an ion exchange material, activated carbon and / or an ultrafilter includes.

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