FILTER MODULE

Abstract

The provided invention relates to replacement filtration elements for liquid purification devices of different type, including liquid purification devices of gravity type, and liquid purification units of beverage preparation systems, for example dispensers or coffee machines. Filtration cartridge, comprises the body with the raw water inlets made in its basement, filled with the filtration material with the purified water tube inside, connected to purified water outlet, made in the central part of the body, characterized in that is equipped with redistribution means of raw water flows.

Claims

1. Filtration cartridge, comprises the body with the raw water inlets made in its basement, filled with the filtration material with the purified water tube inside, connected to purified water outlet, made in the central part of the body, characterized in that is equipped with redistribution means of raw water flows.

2. Filtration cartridge according to the claim 1, characterized in that the redistribution means of raw water flows may be made as frame of circular section equipped with stiffening ribs, dividing the frame into sections.

3. Filtration cartridge according to the claim 1, characterized in that filtration material contains at least two sorbent types.

4. Filtration cartridge according to the claim 3, characterized in that sorbents may be placed in layers.

5. Filtration cartridge according to the claim 3, characterized in that sorbents may be mixed.

Description

DISCLOSURE OF THE INVENTION IS CLARIFIED BY THE FIGURES

[0013] FIG. 1 discloses an example of filtration cartridge construction.

[0014] FIG. 2 discloses an example of filtration cartridge lower part.

[0015] FIG. 3 discloses an example of filtration cartridge basement.

[0016] Filtration cartridge (FIG. 1) comprises the body 1, filled with filtration material 3, and the tube 4, placed inside the body 1. Tube 4 may be made as one detail with the purified liquid outlet 6 or be a separate detail, which is installed into the body (nor shown). Raw liquid inlet openings 2 and purified liquid outlet 6 are made in the bottom of the body 1. The flow redistribution means 5 is made inside the body 1 (FIG. 1).

[0017] Body 1, a lid 8, tube 4, and flow redistribution means 5 are made of polymeric materials, for example, polyolefins, for example, but not limited to polypropylene, polyethylene or polystyrene.

[0018] Filtration material 3 contains at least two sorbents of different hydrophilic properties and particle size, for example, but not limited to activated carbon, activated carbon fiber, ion exchange resins and ion exchange fibers. Sorbents can be mixed or be placed layer by layer.

[0019] Flow redistribution means 5 may be made as a frame 9, divided into sections by the stiffening ribs. Additionally, each section may be equipped with, for example, but not limited to with the mesh 12 or spun bond (not shown). Flow redistribution means 5 may be made near the bottom of the tube 4 (FIGS. 1 and 2) or may be placed on ⅓ from the height of the body from the bottom (not shown). Therefore, the flow redistribution means 5 may serve as the fixation means of one of the filtration material 3 layers.

[0020] The filtration cartridge body 1 is closed with the lid 8 from above (FIG. 1).

[0021] The tube 4 for water purification is equipped with the postfilter 7 (FIG. 1), made as, for example, but not limited to sintered polyolefins, for example polyethylene or polypropylene, carbon fiber of carbon block.

[0022] Within the scope of the distinguishing features the filtration cartridge works as follows. Filtration cartridge is inserted in the raw liquid storage vessel of the liquid purification device or beverages preparation device. Raw liquid through inlet openings 2 flows into the filtration cartridge. Due to the flow distribution means 5 raw liquid evenly distributes in the volume of the filtration material 3 in the body 1, and rises up, purifying while flowing through the sorbents. Purified liquid through the postfilter 7 (when included) or through the opening flows into the purified liquid tube 4 and flows through the outlet opening 6. Further purified liquid flows into the purified liquid storage vessel of the liquid purification device or into the beverage preparation unit of the beverage preparation device, for example of coffee machine.

[0023] The flows redistribution means 5 as well as the difference in the particle size and hydrophilic properties of the sorbents of the filtration material 3 provides effective utilization of the most part of the filtration material 3 so its effective volume increases too. Besides, opposed to the closest analogue liquid filtration is done quicker and more even, therefore due to that filtration material contains of at least two sorbents the water purification degree increases.

[0024] The description of the present invention submits a preferred embodiment of the invention. It can be changed within the claimed set of the claims, so the wide use of the invention is possible.