DESC:Field of the Invention
The present invention relates to the field of water filtration and treatment. Particularly, the Invention provides water filtering cartridge/device and method of filtering and treating water using the same.
Background of the Invention
The following background discussion includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
Depending on the water quality required, a number of purification technologies are used to remove these impurities. It is often desirable to use a combination of water purification technologies to effectively remove contaminants to levels required for critical applications. There are different types of water purifiers, ranging from simple water filters to advanced purifiers, available in market.
Water treatment systems remove or destroy contaminants/undesirable elements through processes like absorption (example: pleated, sediment filters), adsorption (carbon, activated alumina), Ultra Filtration, Osmosis, ion exchange etc.
Carbon filtering is a method of filtering that uses a bed of activated carbon to remove contaminants and impurities, using chemical adsorption where each particle/granule of carbon provides a large surface area/pore structure, allowing contaminants the maximum possible exposure to the active sites within the filter media. Activated carbon can be made from coal, wood, or coconut shell and is useful for removing impurities, chemicals and contaminants from water through processes like adsorption.
Similarly, Sediment filters capture dirt, rust, silt and other particulate matter from water. The longest lasting most effective sediment filters use pleated sheets. Pleated designs, due to their larger surface area and low water resistance result in a low water pressure drop, providing higher flow rates and greater filtration capacity. Pleated cartridges primarily act as surface filters.
The traditional filter systems present in the market are based only on a single filter media. However, with the advancement in technology, the cartridge filters are now configured, to combine the filter media on the basis of a desired filtration performance needed as the multi-stage filtration systems have been seen to be efficient in the filtration process as compared to a single stage filtration system. Considering that the radial flow filters are understood to have a greater life than traditional filters, thus, to achieve radial flow, the general construction of filters, when combined, is done in concentric manner. Combining two or more filters inside single filter housing when done in radial manner has In to Out water flow path where the filters are placed in co-concentric manner when the filters are usually of flexible media (paper or cellulose based) or only one solid media encased by flexible media. However, the concentric configuration of filter media poses limitation of the materials that can be used in such filters as it is difficult to pack granules filter media (like GAC & pH balancing mineral) in concentrically design filters. In such a concentric arrangement of multiple media, it is also difficult to design the water flow path without mixing the input and output water of each filter media in single filter housing. The conventional system to prevent/separate the mixing of input and output water has been by using an O-ring seal with the filter media. However, in doing so, the assembly would be very difficult as providing multiple sealing with O-rings makes it difficult to push the filter media into the housing and get a perfect sealing. Also, during assembly, the O-ring sealing have a potential to get damaged and/or disengage from the groove because of the friction created during the fitment of the filter media into the housing during assembly. Therefore, in all such situations, seal integrity is always a concern.
Patent Application WO2004014803 discloses a filter cartridge for the treatment of water which comprises an inlet for the water to be treated, the inlet communicating with a downwardly extending hollow passage adapted for gravity flow of water there through, the hollow passage being connected at its lower end to at least one filter media, and an outlet for exiting treated water from the filter media. The water flows through the hollow passage and enters the lowermost end of the filter media to travel upwards through the filter media so that entrapped air in the filter media may be released upwards and out of the filter cartridge during the passage of water through the filter media in the upward direction. The cartridge may contain the plurality of filter media separated by the Separator Filter pads.
However, here the flow of water is gravity based and not the radial. Also, there is no mechanism which functions in a way to create a distinct chamber for preventing the mixing of water as of the proposed device.
Similarly, US 6290848 discloses a filter cartridge for a gravity-fed water treatment device, which comprises hydrophilic porous particulate filter with an open upper end, a lower end, and sidewalls there between, the hydrophilic porous particulate filter defining an interior volume free from porous particulate filter media; granular filter media disposed in the interior volume; and a connecting member sealing said hydrophilic porous particulate filter to a portion of the filter cartridge proximate said upper end of said filter. However, the system is a gravity-fed water treatment device.
US 20130220913 discloses a fluid filter, with a media body that comprises granular filter media and is capable of transitioning from a compacted state to an expanded state. The fluid filter may allow for multiple filtration cycles with regeneration of the granular filter media via backwashing cycles.
Different kinds of water filter technologies as described above are present in the market. However, still there is a need for an effective water filtration cartridge or device based on the same, which can advance the technology and meet the need of market. Particularly, there is needed a filter cartridge / device, with media filters combined in a manner such that a) it is able to pack all different types of filter media (i.e. granulated, pleated and solid) in a single filter housing, with the provision of Outside to Inside water flow path for each media during the filtration of water, b) it prevents mixing of filtered and unfiltered water and c) it is space and cost saving.

Object(s) of the Invention:
A primary object of the present invention is to overcome the drawbacks associated with the prior art/s.
Yet another object of the present invention is to provide a filter device/cartridge which combines filter media (i.e. solid, pleated or granules) in a single filter housing and provides a radial water flow path for all the filter media.
Yet another object of the present invention is to provide a filter device/cartridge which combines different type of filter media arranged in a linear sequence / end to end sequence, within a single housing with radial water flow path for all the filter media.
Yet another object of the present invention is to provide a filter device/cartridge comprising multiple filter media with radial Out to In water flow path for each filter.
Yet another object of the present invention is to provide a filter device/cartridge comprising a separator means with a seal feature so that there is no mixing of filtered/unfiltered water or the input/output water.
Yet another object of the present invention is to provide a filter device/cartridge which is cost saving.
Yet another object of the present invention is to provide a filter device/cartridge which is space saving.
Summary of the Invention:
In an aspect of the Invention, there is provided a water filter device for filtration and treatment of unfiltered water, said device comprising:
a filter housing (H) adapted for containing plurality of filter media wherein the incoming unfiltered water flows into the housing (H) through an Inlet connector (1) and water that is filtered by said plurality of filter media flows out of the housing (H) through an Outlet Connector (9);
said plurality of filter media being arranged in a serial manner to create a water flow path through all the filter media where the first filter media in series is in connection to said Inlet connector (1) through a water inlet cap (2) while last filter media in the series is in connection to said outlet connector (9) through a water outlet cap (7) wherein said water flow path comprises flow of water from radial Outside to Inside towards the center core of each of said filter media;
where each of said filter media comprises a water inlet cap at its first end and connects to separator (4) and a seal (5) at its other end, wherein said separator (4) comprises open slots (4C) for conducting water from one filter media to the other filter media in series while said seal (5) is configured to seal said separator (4) against the inside surface of said housing (H) so as to prevent the mixing of filtered/treated water and unfiltered water in said device.

In another aspect of the Invention, there is provided a method of filtering and treating water by the water filter device as described above, said method comprising steps of:
directing the flow of water from a source through said filter housing (H) to the plurality of filter media where the incoming unfiltered water flows into said housing (H) through an Inlet connector (1) and water inlet cap (2) fixed over the first filter media in series wherein said inlet cap causes the water flow to spread across the outer circumferential surface of said first filter media and to pass through the core of said media for achieving the radial Out to In flow channel filtration and where said filtered/ treated water passes through the open slots (4C) of said separator (4) and seal (5) at other end to the next filter media in series where the last filter media in series facilitates egression of the filtered/treated water through water outlet cap (7) placed in communication to the Outlet connector (9) through sealing means.
Brief Description of the Drawings
To further clarify advantages and features of the present invention, a more particular description of the invention will be rendered by reference to specific embodiments thereof, which are illustrated in the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope. The invention will be described and explained with additional specificity and detail with the accompanying drawings in which:
Figure 1 (a) and (b): exploded and schematic view of the filter device/cartridge provided by the present Invention
Figure 2: illustrates a water flow path in the filter device of the present Invention
Figure 3 (a) and (b): illustrates a separator-seal assembly and its X-section respectively
Figure 4: illustrates a schematic view of an embodiment of the filter device comprising a 2-in-1 Chamber/ filter media cartridge in which the first chamber accommodates radial flow.
Figure 5: illustrates a schematic view of an embodiment of the filter device comprising another 2-in-1 Chamber/filter media cartridge in which the first chamber accommodates axial flow.
Figure 6: illustrates schematic view of an embodiment of the filter device comprising 3-in-1 Chamber/ filter media cartridge
Detailed Description of the Invention
For the purpose of promoting an understanding of the principles of the invention, reference will now be made to the embodiment illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended, such alterations and further modifications in the illustrated system, and such further applications of the principles of the invention as illustrated therein being contemplated as would normally occur to one skilled in the art to which the invention relates.
For the instant description, the terms “filtration cartridge”, “filtration device”, “filtration system”, are used interchangeably.
It will be understood by those skilled in the art that the foregoing general description and the following detailed description are exemplary and explanatory of embodiments of the invention and are not intended to be restrictive of the invention.
Embodiments of the filtration cartridge/device have been described herein in the context of water filtration. However, the cartridge/device should not be construed as limited to filtration of water however because it could be utilized to filter other fluids containing contaminants.
Definitions:
Following terms as described hereinafter refers following:
“Water filter” or “filter” or “filter cartridge” refers to structures and mechanisms, respectively for removal or neutralization of contaminants by, for example, one or a combination of size exclusion, electrolysis, absorption, adsorption, oxidation, reduction, chemical disinfection, ion exchange, etc.
‘Water filter material’ or ‘Filter material’ or ‘Filter media’ refers to an aggregate of filter particles. The aggregate of the filter particles forming a filter material can be either homogeneous or heterogeneous. The filter particles can be uniformly or non-uniformly distributed (e.g., layers of different filter particles) within the filter material.
‘Plurality of filter media’ refers to at least 2 filter media. In a preferred embodiment, there are more than 2 filter media.
‘Filter housing’ refers a well-defined compartment that holds multiple chamber containing filter media or filter material.
The ‘filter housing’ (H) may be cylindrical; however, it may be various shapes and sizes. The filter housing may be made from one or more of a variety of materials, including, but not limited to, one or a combination of plastics, metal and alloys thereof, fiberglass, etc.
The term “unfiltered” or “untreated” means water that has not been filtered and treated using the water filter device described herein.
“Inlet connector” means the connection that connects the inlet end of the filter to the outside.
“Outlet Connector” means the connection that connects the outlet end of the filter to the outside.
“Serial manner” means the filter media are arranged one after another in sequential manner.
“Water inlet cap” means the inlet cap which holds the first media at the inlet side of the filter housing.
“Water outlet cap” means the outlet cap which holds the last media at the outlet side of the filter housing.
“Radial Outside to Inside”: In a radial flow design, water flows through the outer wall of the filter into the inner core. This arrangement provides filtering surface that consists of the entire length and circumference of the filter cartridge.
The present Invention provides a filtration device / cartridge for water purification and treatment. In particular, the present Invention provides a filtration device / cartridge comprising multiple chambers positioned in a single housing. Each chamber is fitted with filter media. The chambers comprising filter media are arranged, in the linear sequence, one above the other. The chambers are configured / arranged inside a single and common filter housing which has an inlet and outlet port for entry of impure water and exit of the purified and filtered water. The final purified and filtered water is then collected in the center core of the last filter media in the filter housing through which it comes out of the outlet of the housing. The flow in the first chamber is designed to be axial or radial. The output water from the first chamber enters the second chamber in which the flow path is radial from outside surface to inside core.

In an embodiment, the filter media in said filter cartridge may or may not be present in chamber/s.
The filter media or chamber comprising the filter media are separated from each other through a specific “separator-seal” to avoid mixing of the filtered and unfiltered/untreated water.
In an embodiment, the water enters the first chamber either in axial or radial Outside to Inside direction while for the other subsequent chambers (i.e. second, third, fourth and so) the water flow is particularly Radial Outside to Inside direction.
In an embodiment, the filter cartridge of the present Invention acts as a standalone ‘point of use’ water purification and filtration device.
In another embodiment, the filter cartridge of the present Invention is the essential part of a water filtration device.
In an embodiment, the filter cartridge is adapted to be in communication with a means/connector that enables the cartridge to fit into the mouth of a water container like water bottle.
The water filter device of present Invention can assume many different forms and it is envisaged that one other particularly useful form would be of the type as illustrated in Figure 1, which comprises two chambers i.e. Chamber A and Chamber B, separated by a separator (4). Water enters through the Inlet Connector (1) into the Filter media (3A) in the first chamber (A). The Inlet cap (2) is fixed over the end of the filter media (3A), which causes the water to spread across the outer circumferential surface of the filter media (3A) in the first chamber (A) and flow radially toward a center core 3b. The center core 3b is an axially-extending rigid pipe having radially-facing holes. Water is filtered by the filter media 3A as it enters the center core (3b) through the radially-facing holes. The radially facing holes are represented as (6C) in Figure 1. The filtered water then flows axially along the center core 3b and out an end of the center core (3b) adjacent the separator (4). The separator (4) is fixed to the end of the filter media 3A opposite the inlet cap (2). The separator (4) has open slots for passage of the filtered water. There is a sealing (5) provided in the separator 4 which seals against the inside Filter Housing (H) surface. The seal 5 prevents water from circumventing the separator 4 or bypassing the filter media (3A). Consequently, all water flowing from the first chamber A to the second chamber B must first be filtered through the filter media 3A and flow through the open slots in the separator 4.
A side of the separator (4) facing the second chamber B is fixed to the filter media 6A in the second chamber (B). The design of the opening holes of the separator 4 is such that it directs the input water path to spread across the outer circumferential surface of the filter media (6a). Water is filtered again as it enters to the center core (6b) of the filter (B) in a radial flow path. The cap (7) is sealed to the Filter Housing (H) through two o-rings (8) for a proper seal.
In figure 1, the representations are following:
Filter Media 1 A
Filter Media 2 B
Filter Housing H
Inlet Connector 1
Inlet Cap 2
Circumferential surface of Media 1 3A
Core of Filter Media 1 3B
Separator 4
Internal Surface to Media 1 4A
Internal Surface to Media 2 4B
Open Slots 4C
Sealing 1 5
Circumferential surface of Media 2 6A
Core of Filter Media 2 6B
Radially facing holes in the center core of the media 6C
Outlet cap 7
Sealing 2 8
Outlet Connector 9

In another embodiment, the water filter device for filtration and treatment of unfiltered water comprises filter housing (H) adapted for containing plurality of filter media where the incoming unfiltered water flows into the housing (H) through an Inlet connector (1) and water that is filtered through said plurality of filter media flows out of the housing (H) through an Outlet Connector (9);
said plurality of filter media being arranged in a serial manner to create a water flow path through all the filter media where the first filter media in series is in connection to said Inlet connector (1) through a water inlet cap (2) while last filter media in the series is in connection to said outlet connector (9) through a water outlet cap (7) wherein said water flow path comprises flow of water from radial Outside to Inside towards the center core of each of said filter media;
where each of said filter media comprises a water inlet cap at its first end and connects to separator (4) and a seal (5) at its other end, wherein said separator (4) comprises open slots (4C) for conducting water from one filter media to the other filter media in series while said seal (5) is configured to seal said separator (4) against the inside surface of said housing (H) so as to prevent the mixing of filtered/treated water and unfiltered water in said device.
In an embodiment, the outlet cap (7) is sealed to said Filter Housing (H) through plurality of O-rings (8).
In an embodiment, the seal is fixed in a non-movable manner to inside surface of said filter housing.
In an embodiment, the inlet cap is fixed over said filter media, causing the incoming unfiltered water flow to spread across the outer circumferential surface of said filter media and radially passing the water from outside to Inside direction through the core of said media to obtain the filtered water where said filtered water passes through said separator to the succeeding filter media for further filtration and treatment.
In an embodiment, the filter media comprises one or more of the group consisting of a porous filtering element, a solid body of a filtering medium, an ion-exchange resinous medium, a particulate activated carbon medium, and a particulate matter that includes a substance to be released into the water.
In another embodiment, the filter device comprises a single type of filter media or multiple combination of different filter media.
In another embodiment, the filter device comprises the combination of granular filter media, pleated filter media and a solid body of a filtering medium.
In another embodiment, the filter housing facilitates entry of untreated water to a filter media through an Inlet connector which is adapted to be in communication to the water inlet side of said filter media through an Inlet cap fixed over the filter media.
In another embodiment, the filter housing also facilitates exit of treated water from water outlet side of a filter media, through an outlet cap fixed over said filter media where said outlet cap is in communication to outlet connector through sealing means.
In another embodiment, the device is connected directly to a water source.
In another embodiment, the device is mounted or installed at a particular location.
In another embodiment, the device is portable and can be used at point of use.
In another aspect of the Invention, there is also provided a method of filtering water using the water filter device as described above. The method comprises the steps of directing a flow of water from said source through the single filter housing comprising plurality of serially connected filter media wherein said water flow enters the water inlet side of a first filter media through said Inlet connector and the Inlet cap fixed over said filter media. The inlet cap causes the water flow to spread across the outer circumferential surface of said filter media and to pass through the core of said media for achieving the radial Out to In flow channel filtration and where said filtered water passes through the water outlet side of said first filter media to the succeeding filter media through a separator and a seal means.
In an embodiment, the method of filtering and treating water by the water filter device as described above, comprises following steps:
directing the flow of water from a source through said filter housing (H) to the plurality of filter media where the incoming unfiltered water flows into said housing (H) through an Inlet connector (1) and water inlet cap (2) fixed over the first filter media in series wherein said inlet cap causes the water flow to spread across the outer circumferential surface of said first filter media and to pass through the core of said media for achieving the radial Out to In flow channel filtration and where said filtered/ treated water passes through the open slots (4C) of said separator (4) and seal (5) at other end to the next filter media in series where the last filter media in series facilitates egression of the filtered/treated water through water outlet cap (7), placed in communication to the Outlet connector (9) through sealing means.
The separator comprises open slots for defining the radial Outside to Inside water flow channel through the water inlet side of said succeeding filter media while said seal means being the inherent feature of said separator configures to seal said filter media against the inside surface of said filter housing so as to prevent the mixing of filter and unfiltered water in the filtration device.
The filter housing is adapted to receive the filtered water through the water outlet side of the filter media and egress through an outlet cap fixed over said filter media where said outlet cap is in communication to outlet connector through a sealing means.
In an embodiment, the water outlet cap is sealed to the filter housing through multiple O-rings for a tight seal.
In another embodiment, the filter media may or may not be present in a chamber.
In another embodiment, the water flow channel in the first filter media is axial or radial.
In another embodiment, the water flow channel in the filter media subsequent to the first filter media is radial.
The water flow path in an embodiment where the water flow is radial Outside to Inside in all the filter media is shown in Figure 2.
The presence of the “separator-seal” feature in the present filter cartridge allows assembly of two different media per separator part. Separator along with the “Radial Seal” combination maintains the individuality of two media, ensures the sealing of two media and allows either out-to-in flow in both the media or combination of axial and out-to-in flow.
In another embodiment, more than one Separator & Seal parts may be used to pack multiple media inside a single housing. Separator is made of any mouldable plastics (e.g. Polypropylene, Acrylonitrile butadiene styrene (ABS), Polyethylene etc.) Each end of the Separator connects/holds media with centre water flow channels. Outlet water from one media passes through the “water flow channels” of the Separator and goes to the second media. The Seal prevents the mixing of the input and output water from the filter media. The Separator and the Seal assembly allows compartmentalization of a single housing to accommodate multiple functionality. Figure 3(a) and 3(b) illustrates the separator- seal assembly and its X-section respectively.
The separator and seal assembly provides following advantages:
• Easy Assembly of multiple media inside single housing
• Allows water to have out-to-in (radial) and/or axial water flow path
• Provides the required sealing to avoid mixing of input and output water
• The sealing is present between the filter cartridge with the outer housing of the filter. In such a design, each cartridge acts as an individual filter, without any dead volume entrapping in the space created between the outer surface of the cartridge and the inner surface of the housing. Thus, due to no dead water, the chances of microbial growth inside the filter cartridge is low, that would have water entrapped in the dead space creating microbial growth
In another embodiment, if the configuration is of two filter media in 1 housing (2-in-1), the filter B’s other end (shown in figure 1) is connected to an end cap (7), which has an opening in the center through which the filtered water from Filter (B) can be taken out of the housing.
In another embodiment, the filter cartridge comprises two chambers wherein the first chamber comprises filter media based on granular activated carbon or a carbon block while the second chamber comprises pleated sediment filter. Such configuration/s is illustrated in Figures 4 and 5 respectively.
In another embodiment, the filter cartridge comprises two chambers wherein both the chamber comprises granular activated carbon or pH balancing minerals packed.
In another embodiment, the filter cartridge comprises two chambers wherein the first and second chamber comprises filter media based on Solid Block based on Carbon, Ultrafiltration module, Ceramics block etc.
In another embodiment, the filter cartridge comprises two chambers wherein the first and second chamber comprises filter media based on pleated filter based on non-woven sediment, antimicrobial non-woven media, etc.
In another embodiment, the filter cartridge comprises three chambers wherein the first chamber comprises filter media based on granular activated carbon, second chamber comprises filter media based on pleated filter while the third chamber comprises a solid block of Carbon Block, Ceramics block etc. The configuration is illustrated in Figure 6.
If the filter configuration includes three or more filter media in a single housing (3-in-1, 4-in-1, etc), the same Separator (4) along with the seal (5) can be fixed to the ends of the subsequent filter media for directing the flow to Radial pattern (out to in flow path).
In another embodiment, the filter cartridge comprises two chambers with two filter media in each.
The filter device/cartridge thus comprises at least a chamber with the filter media and extends to comprise multiple chambers, with any combination of filter media/s as per the requirement.
The filter device / cartridge provided herein may also, by some embodiments, be used as a stand-alone device, e.g. for use in a centralized water filtration system.
In yet another embodiment, the filter cartridge may be used as a unit of another filtration system/device.
Following are the advantages of the present Invention:
1) The filter device combines different type of filter media i.e. solid, pleated or granules, within single filter housing and provides a radial Out to In water flow path for all the filter media.
2) The device is designed in such a way that it contains two or more chamber wherein the filter media can be filled in.
3) The design is such that it avoids mixing of the input water of the filter media 1 (unfiltered) with the filtered water of the media 2 as well as prevents mixing of the input water (unfiltered water) with the output water of the subsequent filters media.
4) The separation and the axial flow direction is achieved with a unique design called “Separator”, which has open slots for directing water flow and a sealing to the inside surface of the filter housing.
5) Space saving – Multiple media with each separate housing with connectors would be bigger and bulky in size as compared to filter device based on single housing with multiple media inside, as provided by the present filter device.
6) Cost saving on housing
7) Ease of assembling/packing – Instead of using multiple O-rings sealing, the present filter device comprises “Separator and Seal” mechanism which makes the assembly of multiple filter media easy and fast inside the housing.
8) The separator and seal feature prevents mixing of filtered and unfiltered water in the filter cartridge
9) The sealing being present between the filter cartridge and the outer housing of the filter. In such a design, each cartridge acts as an individual filter, without any dead volume entrapping in the space created between the outer surface of the cartridge and the inner surface of the housing. Thus, due to no dead water, the chances of microbial growth inside the filter cartridge is low, that would have water entrapped in the dead space creating microbial growth
Comparison of single media versus combination media:
The Inventors tested the filter housing design with single media versus combination media (2 media with same design configuration) for 30 minutes to see if there is any drop in flow rates and pressure before and after the filter. The below table illustrates the results which shows that the flow rates and the differential pressure across respective single media and the combination filter remained consistent for the duration of the test.
Filter under test Sampling Time (min) Feed Flow Rate (ml/min) Flow rate after filter (ml/min) Differential Flow Differential Pressure across filter (psi)
Filter 1 0 250 250 0 1
30 250 250 0 1.2
Filter 2 0 250 250 0 0.5
30 250 250 0 0.5
Filter 3 (Filter 1 + Filter 2) 0 245 245 0 1.4
30 245 245 0 1.4

The above description presents the best mode contemplated in carrying out embodiments of the invention. However, it is susceptible to modifications and alternate constructions of the embodiments shown in the drawings and accompanying description. Consequently it is not intended that the invention be limited to the particular embodiments disclosed. On the contrary, the invention is intended to cover all modifications, sizes and alternate constructions falling within the spirit and scope of embodiments of the invention. Persons of ordinary skill in the art may appreciate that various changes and modifications may be made to the embodiments described above without deviating from the inventive concept. For example, the water filtration cartridge may include a timer or end-of-life indicator. Thus, the scope of the present disclosure should not be limited to the structures described in this application, but only by the structures described by the language of the claims and the equivalents of those structures.
,CLAIMS: We Claim:
1. A water filter device for filtration and treatment of unfiltered water, said device comprising:
a filter housing (H) adapted for containing plurality of filter media where the incoming unfiltered water flows into the housing (H) through an Inlet connector (1) and water that is filtered by said plurality of filter media flows out of the housing (H) through an Outlet Connector (9);
said plurality of filter media being arranged in a serial manner to create a water flow path through all the filter media where the first filter media in series is in connection to said Inlet connector (1) through a water inlet cap (2) while last filter media in the series is in connection to said outlet connector (9) through a water outlet cap (7) wherein said water flow path comprises flow of water from radial Outside to Inside towards the center core of each of said filter media;
where each of said filter media comprises a water inlet cap at its first end and connects to separator (4) and a seal (5) at its other end, wherein said separator (4) comprises open slots (4C) for conducting water from one filter media to the other filter media in series while said seal (5) is configured to seal said separator (4) against the inside surface of said housing (H) so as to prevent the mixing of filtered/treated water and unfiltered water in said device.
2. The filter device as claimed in claim 1, wherein said outlet cap (7) is sealed to said Filter Housing (H) through plurality of O-rings (8).
3. The filter device as claimed in claim 1, wherein said center core of said filter media comprises an axially-extending rigid pipe having radially facing holes.
4. The filter device as claimed in claim 1, wherein said seal is fixed in a non-movable manner to inside surface of said filter housing.
5. The filter device as claimed in claim 1, wherein said inlet cap is fixed over said filter media, causing the incoming unfiltered water flow to spread across the outer circumferential surface of said filter media and radially passing the water from outside to Inside direction through the core of said media to obtain the filtered water where said filtered water passes through said separator to the succeeding filter media for further filtration and treatment.
6. The filter device as claimed in claim 1, wherein said filter media may or may not be present in a chamber.
7. The filter device as claimed in claim 1, wherein said filter media is one or more of the group comprising of a porous filtering element, a granular filter medium, a solid body of a filtering medium, an ion-exchange resinous medium, a particulate activated carbon medium, a pleated filter medium.
8. The filter device as claimed in claim 1, comprises a single type of filter media or multiple combination of different filter media.
9. The filter device as claimed in claim 1, wherein said media comprises the combination of granular filter media, pleated filter media and a solid body of a filtering medium.
10. A method of filtering and treating water by the water filter device of claim 1, said method comprising steps of:
directing the flow of water from a source through said filter housing (H) to the plurality of filter media where the incoming unfiltered water flows into said housing (H) through an Inlet connector (1) and water inlet cap (2) fixed over the first filter media in series wherein said inlet cap causes the water flow to spread across the outer circumferential surface of said first filter media and to pass through the core of said media for achieving the radial Out to In flow channel filtration and where said filtered/ treated water passes through the open slots (4C) of said separator (4) and seal (5) at other end to the next filter media in series where the last filter media in series facilitates egression of the filtered/treated water through water outlet cap (7) placed in communication to the Outlet connector (9) through sealing means.
11. The method as claimed in claim 10, wherein said water outlet cap (7) is sealed to said filter housing through plurality of O-rings for a tight seal.
12. The method as claimed in claim 10, wherein said filter media may or may not be present in a chamber.
13. The method as claimed in claim 10, wherein water flow channel in the first filter media is axial or radial.
14. The method as claimed in claim 10, wherein water flow channel in the filter media subsequent to the first filter media is radial.