DE9313215U1 - Device for filtering tap water - Google Patents

Description

A. Jeck&H.-J. Fleck

PATENT ATTORNEYS

·**·· J \ \l iMartigrö™ngeP§traße47/1 ■ PO Box 11 65 · D-7141 Schwieberdingen J i ··;;**!* * *»T9lefo« {071 50) 3 32 71 and 3 44 25 ■ Fax (071 50) 3 21

Sheet G 9077 - v/p 15 June 1993

M etra &khgr; GmbH
Rheinwaldstr. 22

7210 Rottweil

Device for filtering tap water

The invention relates to a device for filtering tap water according to the preamble of claim 1.

A device of this type is known from US 40 66 551. The device consists of a container that holds the tap water and can be closed with a lid, as well as a pump that feeds the tap water to a water outlet via a filter. The compressed air pump located outside the container creates a pressure cushion above the water surface.

It is the object of the invention to further develop a device of the type mentioned at the outset in such a way that the provision of compressed air is simplified.

This object is achieved with the features specified in the characterizing part of claim 1. This provides an increased volume of compressed air, while maintaining a relatively low construction height of the container and an optically favorable shape. The increased pressure volume allows an increased

G9077 - 2 -

Water volume can be dispensed without having to start the pump, as the pressure on the water is maintained for longer.

The structural design and handling of the device are simplified according to a further embodiment in that the outlet pipe is guided through a hole in the cover and forms a unit with the cover, and that the outlet pipe protrudes on the inside of the cover and is detachably connected to the top of the filter, whereby the closed top of the filter has an opening for inserting the outlet pipe.

This makes accessing and replacing the filter easier.

The discharge of the cleaned and filtered drinking water into a fresh water tank located next to the device is made possible by the fact that the outlet pipe is U-shaped, with one side leg being led through the lid and connected to the filter, while the other side leg serves as a downward-facing outlet.

The invention is explained in more detail using an exemplary embodiment shown in section in the drawing.

The container 10 holds tap water, whereby the water level 14 can reach a maximum level. There is therefore always an empty space 18 above the water level 14, which is limited by the lid 11 closing the container 10. In the area of this empty space 18, the cross-section of the container 10 is enlarged all around in order to obtain a large empty space 18 above the water level 14. The cross-section of the container 10 can be essentially round.

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In the area of the empty space 18, an opening 13 is made in the container wall. A pump 12 designed as a compressed air pump is installed outside the container 10, which is connected with its pressure output via the opening 13 to the empty space 18 of the container 10. When the pump 12 is in operation, a pressure cushion is created above the water level 14. A pot-like filter 15 is arranged vertically in the tap water, which is spaced from the bottom of the container 10 with its closed underside and extends beyond the highest water level 14. The top of the pot-like filter 15 is closed except for an opening for inserting a U-shaped outlet pipe 17. The outlet pipe 17 is guided through a hole 16 in the cover 11 and is preferably fixed therein, so that the cover 11 and the outlet pipe 17 form a unit. One side leg of the U-shaped outlet pipe 17 therefore protrudes on the inside of the cover 11 and can be removably connected to the filter 15 by plugging it in. This serves to facilitate filter cleaning and filter replacement.

The pressure cushion created above the water level 14 presses the tap water through the filter 15 into the outlet pipe 17. The side leg of the outlet pipe 17, which is located outside the container 10 and points downwards, serves as an outlet for the fresh water to be collected from a fresh water container 20.

Claims (5)

Claims 1. Device for filtering tap water with a container that holds the tap water and can be closed by means of a lid and with a pump that feeds the tap water to a water outlet via a filter, wherein the pump (12) is arranged as a compressed air pump outside the container (10) and its pressure outlet is connected to the interior (18) of the container (10) via an opening (13) in the container wall that is above the highest water level (14), where the filter (15) is pot-shaped and arranged vertically in the tap water of the container (10), and where the top of the filter (15) is connected to an outlet pipe (17) that runs through the lid (11) and is closed except for the outlet pipe (15), characterized, that the container (10) has a substantially round cross-section, which is enlarged all around in the region of the opening (13) of the container wall. 2. Device according to claim 1,
characterized, that the outlet pipe (17) is guided through a bore (16) in the cover (11) and forms a unit with the cover (11). •·♦♦ · G 9077 ···■·"· " "5 - 3. Device according to claim 1 or 2,
characterized, that the outlet pipe (17) protrudes on the inside of the cover (11) and is detachably connected to the top of the filter (15), wherein the closed top of the filter (15) has an opening for inserting the outlet pipe (17). 4. Device according to one of claims 1 to 3,
characterized, that the outlet pipe (15) is U-shaped, whereby a side leg is passed through the cover (11) and connected to the filter, while the other side leg serves as a downward-facing outlet. 5. Device according to one of claims 1 to 4,
characterized, that the bottom of the filter (15) is at a distance from the bottom of the container (10) and that the top of the filter (15) is located above the highest water level (14) of the container (10).