Patent Publication Number: US-2018050289-A1

Title: Oil water separator filter housing having multiple outlets

Description:
TECHNICAL FIELD 
     The present invention generally relates to air compressor system filters, and more particularly, but not exclusively, to filter and housing arrangements for the removal of oil from condensate produced by an air compressor system. 
     BACKGROUND 
     Providing filtering systems useful to remove lubricant from condensed water produced by a compressor system remains an area of interest. Some existing systems have various shortcomings relative to certain applications. Accordingly, there remains a need for further contributions in this area. 
     SUMMARY 
     One embodiment of the present invention is a unique system for providing flexibility in how many filter cartridges for the removal of oil from air compressor condensate can be used within a given filter housing. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for changing the number of filter cartridges through use of a pipe extension. Further embodiments, forms, features, aspects, benefits, and advantages of the present application shall become apparent from the description and figures provided herewith. 
    
    
     
       BRIEF DESCRIPTION OF THE FIGURES 
         FIG. 1  depicts an embodiment of a compressor system having a filter. 
         FIG. 2  depicts an embodiment of a filter housing. 
         FIG. 3  depicts an embodiment of a filter cartridge. 
         FIG. 4  depicts an embodiment of a filter housing having a single filter cartridge. 
         FIG. 5  depicts an embodiment of a filter housing having two filter cartridges. 
         FIG. 6  depicts an embodiment of a filter housing having three filter cartridges. 
         FIG. 7  depicts an embodiment of a filter housing having four filter cartridges. 
         FIG. 8  depicts an embodiment of a filter housing having several housing outlets. 
     
    
    
     DETAILED DESCRIPTION OF THE ILLUSTRATIVE EMBODIMENTS 
     For the purposes of promoting an understanding of the principles of the invention, reference will now be made to the embodiments 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. Any alterations and further modifications in the described embodiments, and any further applications of the principles of the invention as described herein are contemplated as would normally occur to one skilled in the art to which the invention relates. 
     With reference to  FIG. 1 , a compressor system  50  is disclosed having a compressor  52  structured to receive and compress a gaseous composition  54  including a target gas (e.g. air) and an undesired vapor (e.g. water vapor). The compressor  52  can take on a variety of forms such as, but not limited to, an oil filled screw compressor, but other forms are also contemplated. The compressor system  50  also includes a dryer  56  configured to condense and remove the undesired vapor from the compressed gaseous composition and thereby form a dried, compressed air  58 . The dryer  56  operates by cooling the compressed gaseous composition. In one non-limiting form the dryer  56  is a refrigerated dryer. The dried compressed air can be delivered to an end user, customer, reservoir, or other suitable destination. 
     The compressor system  50  also includes a condensate filter  60  configured to receive the condensed state of the undesired vapor present in the gaseous composition  54 . This condensate filter  60  can receive the condensate water vapor from various locations in the compressor system  50  including the compressor  52 , dryer  56 , and other liquid collection points. The condensed state of the undesired vapor will typically include a mixture of water and lubricant  62 , where the lubricant originates from within the compressor used to seal, cool and lubricate. The filter  60  is structured to remove the lubricant from the condensed water so that cleaned water  64  can be discharged in a municipal sewer system without violating environmental requirements. 
     The filter  60  generally includes a filter housing, one or more removable filter elements disposed within the housing, and some type of covering to enclose the filter elements. As shown in the exemplary embodiment depicted in  FIG. 2 , the filter  60  can include a filter housing  66  and a diffuser cap  68 . Although the housing  66  (shown in cutaway) is circular in shape, along with the diffuser cap  68 , other shapes are contemplated herein. 
     The diffuser cap is structured to receive the unwanted condensate  62  generated by the compressor system  50  and deliver the unwanted condensate into the interior of the filter housing  66 . The diffuser cap  68  includes an inlet  70  and an outlet  72 . The diffuser cap can also include a breather port  92  (best seen in  FIG. 8 ) that can include a foam insert and which facilitates air passage, if needed, between atmosphere and the interior of the diffuser cap  68 . Although the inlet  70  is shown located on the side of the diffuser cap  68 , other locations are also contemplated. The outlet of the diffuser cap  68  can include a projection oriented in a downward direction into the interior of the filter housing  66  as shown in the illustrated embodiment, but other orientations are also contemplated. In some forms the outlet  72  may not include a projection as will be appreciated in the discussion below. 
     The filter housing  66  is structured to receive the unwanted condensate  62  delivered from the diffuser cap  68  as well as to house a series of stacked filters discussed further below. The housing  66  includes a series of filter positions defined in part by registration surfaces  74 . Any number of registration surfaces  74  can be used at any given filter position within the housing  66 . Although the registration surfaces are depicted as projections away from an inside surface of the housing  66 , other configurations and orientations are also contemplated. In one form the registration surface can be an indentation into the inside surface of the housing  66 . 
     Turning now to  FIG. 3 , one embodiment of a filter cartridge  76  suitable for insertion into the filter housing  66  is depicted. The filter cartridge  76  can be made of a molded plastic construction, such as a blown thermoplastic construction, but other techniques are also contemplated herein. The filter can be made out of a variety of materials, whether organic polymers including plastic, or any others suitable for use in a compressor system  50 . The filter is structured to house a filter media suitable for removing lubricant from the unwanted condensate  62 . In one form the lubricant can be polyalkaline glycol, or a glycol and ester mixture, but other lubricant types are also possible. Suitable filter media for compressor system  50  application include zeolite rocks distributed into the interior of the filter cartridge  76 , but other filter media is also contemplated. In many applications any suitable type of filter media are contemplated. To set forth a broad category of possible filter media, oleophillic media can be used in the cartridge. Such media include, but are not limited to: zeolite, carbon, coalescing foam, polypropylene, and compositions such as polytetrafluorethylene (e.g. Teflon). In these embodiments a screen can optionally be used and located at the bottom of the filter cartridge to provide a barrier for egress of the filter media. 
     Though the filter cartridge  76  can take a variety of forms, the illustrated embodiment includes a registration surface  78  structured to be placed in cooperative engagement with the registration surface  74  of the filter housing  66 . Any number of registration surfaces  78  can be used and located in any variety of locations, and can take on any shape and size. In one form the registration surface can extend along a line that is orthogonal to a line connecting the center points of the filter cartridge inlet and outlet. Although the registration surfaces  78  project away from the cartridge housing to form a ridge in the illustrated embodiment, any shape and orientation are also contemplated herein that achieve the effect of locating the cartridge  76  into a position within the housing  66  and, when engaged with the registration surface  74  of the housing  66 , discourage removal of the cartridge  76  from the housing  66 . The registration surface in the illustrated embodiment can circumferentially extend any variety of amounts. To set forth just a few non-limiting examples, the registration surfaces  78  circumferentially extend less than 45 degrees, less than 30 degrees, less than 20 degrees, less than 15 degrees, less than 10 degrees, or less than 5 degrees. 
     The filter cartridge  76  can also include feet  80 , inlet  82 , and a handle for removal (the handle in the illustrated embodiment curves around the inlet  82  and are attached through pivoting arrangement to the upright handle supports  84 ). Not all embodiments need include feet  80  and/or the handles for removal  84 . The feet can be used to support the cartridge  76  into position within the housing  66 , either by contact with the housing  76  (or is component parts), or by contact with an adjacent filter cartridge  76  also located in the housing  66 . The feet  80  can be molded in to the cartridge housing, but in other forms the feet can be affixed to it. Any number of feet  80  can be used. The inlet  82  can be connected to the outlet  72  of the diffuser cap  68 , but in other forms the inlet  82  can be connected to other components as will be appreciated in the discussion below. Though the inlet  82  is depicted as a projection, some embodiments need not include a projection away from the cartridge  76 . For example, the registration surface  78  can be formed as an indentation into the cartridge  76 . 
     Although not depicted in the image, the filter cartridge  76  includes an exit at the bottom of the cartridge (which can be seen in the figures below). The exit is sized to engage an inlet  82  of an adjacent (albeit located below) cartridge  76  to form a fluid path from one cartridge  76  to the next. The inlet  82  and exits can thus be shaped to complement one another, and in this respect the cartridges can be interchangeable between each other (i.e. the inlet of one can fit the outlet of the other, and vice versa the outlet of the one can fit the inlet of the other). The inlets  82  and outlets can be circular in shape. The center point of each circular inlet can be arranged along a line that is parallel with an external cylindrical surface in those embodiments having a cylindrical exterior. In one form the fit between inlets and outlets of the cartridges  76  can be made by slideable insertion. Additionally and/or alternatively, the fit can be a slip fit. In one form the fit is non-threaded. 
     The filter cartridge  76  can be inserted into the housing  66  by first removing the diffuser cap  68 , orienting the filter cartridge  76  such that the registration surface  78  does not interfere with the registration surface  74  of the housing  66 , and sliding the cartridges  76  into place. Once the cartridge  76  is located in a cartridge position, the cartridge  76  can be rotated to engage the registration surfaces  74  and  78 . In one non-limiting form the cartridge  76  can be rotated approximately 60 degrees to ensure appropriate engagement, although it is contemplated that other angles can also be used. In some forms suitable rotations include angles less than 360 degrees, such as but not limited to less than 270 degrees, 180 degrees, 90 degrees, or 40 degrees, to set forth just a few examples. In some form the surfaces  74  and  76  can be parallel with one another, while in others the surfaces  74  and  76  can be angled such that a progressive interference is created by further rotation of the cartridge  76 . Although not depicted, a stop may be formed into one or both of the cartridge  76  and housing  66  to halt further rotation of the cartridge  76 . 
     Turning now  FIGS. 4-7 , various numbers of cartridges  76  can be used within the filter housing  66 , some of which further include a pipe extension  77 . The pipe extension  77  is used to connect the diffuser cap  68  to the upper most cartridge  76  in the vertically stacked set of cartridges  76 . In one form the connection between the extension  77  and either or both of the outlet  72  and inlet  82  can be a slip fit that, in some forms, is fluid tight. The fit can be non-threaded. The embodiment in  FIG. 4  depicts a single cartridge  76 , the embodiment in  FIG. 5  depicts two cartridges  76 , the embodiment in  FIG. 6  depicts three cartridges  76 , and the embodiment in  FIG. 7  depicts four cartridges  76 . 
     The number of cartridges  76  can be sized according to the needs of any given compressor system  50  application. High volume compressors may use more filter cartridges  76  than low volume compressors. It is contemplated in one form that each cartridge can be suitable for 100 cfm air flow. 
     The pipe extension  77  can include an inlet and outlet having the same size, such that it does not matter which direction it is oriented to connect the cap  68  to the upper most cartridge  76  (at least in those embodiments where in the outlet  72  is sized similarly to the inlet  82 ). The sizes of the pipe extensions  77  are different in the various embodiments which reflect the different number of cartridges used in the embodiment. In  FIG. 7  a pipe extension  77  is not used, but in other embodiments a shortened pipe extension  77  could be used where the projection from either or both the cartridge  76  and cap  68  are not present. 
     Similar to when the filter cartridges  76  are serviced by rotating the cartridge  76  to clear registration surfaces  74 , slidingly inserting and then rotating the cartridges  76  to lock in place, the filter housing  66  can continue to be used when a customer changes total compressed air flow such as adding a compressor or upgrading to a higher capacity compressor. In such an application the user need only change the number of filter cartridges  76  present in the housing  66 , exchange the pipe extension  77  for a different length pipe extension  77  (if needed), re-install the diffuser cap  68 , and begin operating with the new compressor. 
     Turning now to  FIG. 8 , a cutaway view is shown of a filter housing  66  that includes four filter cartridges  76 . The housing  66  is further shown having a number of fluid flow outlets  86 . The outlets  86  are arranged to coincide with each of the filter cartridges  76 , and are placed in proximity to the top of each cartridge  76  (marked as a dashed line in the figure). In one form the outlets  86  include a centerline that coincides with the top of each cartridge, but such strict correlation is not needed in all embodiments. 
     The housing outlets  86  can be selectively covered such as through a threaded cover, but other cover types are also contemplated. It is envisioned that only one housing outlet  86  need be opened at any given time, the outlet  86  of which corresponds to the top most cartridge  76  in the stack. For example, if only one cartridge  76  were used it is envisioned that the bottom most housing opening  86  would be uncovered, while the other three remain closed by the cover. If two cartridges are used, the second cartridge  76  from the bottom would have its housing outlet  86  uncovered while the other three remain closed by the cover. And so on for the other cartridges. 
     An optional drain outlet  90  can be provided in the housing  66 . Such a drain  90  can be located at the bottom and is useful for vacuuming liquid from within housing  66  during servicing. The drain  90  can, but need not, be covered in the same manner as the housing outlets  88 . 
     Also of note in  FIG. 8 , the feet  80  of each cartridge  76  are shown engaged with a cartridge below. Such engagement is suitable to provide a mechanical stop to halt further coupling between the adjacent cartridges  76 . Also of note, the bottom most cartridge  76  is shown in which its feet  80  are engaged with a standoff placed in the bottom of the housing  66 . Such an arrangement can be included in any given embodiment to provide a flow path for the filtered water to exit the bottom cartridge  76  and begin to flow to the outlet. The housing  66  can include a well located intermediate the standoffs formed in the bottom which engage the feet  80  of the bottom cartridge, but not all embodiments need include such a shape. 
     One aspect of the present application provides an apparatus comprising a filter cartridge including an inlet and an outlet as well as an impermeable outer casing structured that extends between the inlet and outlet to provide an internal space for an internal filtering media, the outlet structured to be complementarily engaged during operation of the filter cartridge with an inlet of a neighboring filter cartridge having the same configuration such that the complementary engagement provides a liquid flow path between the cartridges, the outer casing including a registration surface that extends less than 360 degrees around the casing, the registration surface structured to be engaged with a complementary registration surface in a filter housing such that the engagement discourages removal of the filter cartridge from the housing. 
     A feature of the present application provides wherein the inlet includes a tubular opening that extends away from a main body of the filter cartridge. 
     Another feature of the present application provides wherein the registration surface is a protrusion that extends away from the outer casing. 
     Still another feature of the present application provides wherein the registration surface extends along a line at a right angle to a line between the inlet and outlet. 
     Yet another feature of the present application provides wherein the outer casing of the filter cartridge includes an organic polymer material, and wherein the filter cartridge further includes zeolite rock as a filtering media disposed internal to the filter cartridge. 
     Yet still another feature of the present application provides wherein the filter cartridge includes a bottom surface from which extends a foot structured to support the filter cartridge. 
     Still yet another feature of the present application provides wherein the foot is structured to abut the neighboring filter cartridge when the inlet and outlet are engaged with one another. 
     Another aspect of the present application provides an apparatus comprising a liquid water filter cartridge having an inlet for receipt of a water and lubricant mixture as well as an outlet structured to pass a filtered water, the inlet and outlet being complementarily shaped such that when an inlet of a the liquid water filter cartridge is engaged with an outlet of an adjacent liquid filter cartridge during operation of the liquid water filter cartridge a liquid flow path is formed, the liquid filter cartridge also including a main body extending between the inlet and outlet, the main body including a non-threaded registration surface that extends less than the entire lateral periphery of the filter cartridge, the non-threaded registration surface configured to engage with an interior surface of a filter housing in which the liquid water filter cartridge can be disposed to lock the filter in place in the housing. 
     A feature of the present application provides wherein the registration surface is a ridge formed in the outer casing of the filter cartridge that circumferentially extends less than 20 degrees. 
     Another feature of the present application provides wherein the liquid water filter cartridge further includes a foot extending from a bottom of the cartridge. 
     Still another feature of the present application includes a filter media disposed within the main body. 
     Yet another feature of the present application provides wherein the filter media is a zeolite rock material. 
     Still yet another feature of the present application includes the filter housing, and wherein the liquid water filter cartridge can be locked into place by rotating the cartridge relative to the housing through a rotation angle about an axis that extends between the inlet and outlet, the rotation angle less than 180 degrees. 
     Yet still another feature of the present application includes a plurality of protrusions, and wherein the liquid water filter cartridge is configured to be rotated less than 180 degrees to be locked into place when installed in the filter housing. 
     Yet another aspect of the present application provides an apparatus comprising a filter cartridge having a main body disposed between complementary shaped inlet and outlet and in which is disposed a zeolite rock filter media, the liquid filter cartridge also including a main body extending between the inlet and outlet and having a registration surface extending from the main body structured to cooperate with a complementary registration surface formed on an interior surface within a filter housing where such cooperation discourages removal of the filter cartridge from the filter housing when the complementary registration surfaces are interengaged, the filter cartridge also including feet formed in the main body and used to abut an adjacent filter cartridge when stacked upon one another. 
     A feature of the present application provides wherein the inlet is shaped such that it can be slidingly received in an outlet of the adjacent cartridge. 
     Another feature of the present application provides wherein the registration surface of the filter cartridge extends less than 20 degrees over the periphery of the main body. 
     Still another feature of the present application provides wherein the registration surface of the filter cartridge is an externally extending ridge. 
     Yet another feature of the present application provides wherein the main body is a molded plastic shell. 
     Yet still another feature of the present application further includes the adjacent cartridge and the filter housing within which is disposed the cartridge and adjacent cartridge. 
     Yet still another feature of the present application provides an apparatus comprising a filter housing having an opening for the receipt of water-lubricant mixture and having an open interior into which can be placed a series of vertically stacked filter cartridges, the filter housing having plurality of vertically spaced outlets corresponding to each filter in the series of vertically stacked filter cartridges such as to create a vertically stacked pairing of outlets and cartridges, each of the vertically spaced outlets in the pairing of outlets and cartridges positioned in proximity to a top of the cartridge that corresponds to the vertically spaced outlet in the pairing, the vertically spaced outlets configured to be selectively opened from a closed state by removal of a threaded cover that closes the vertically spaced outlets. 
     A feature of the present application provides wherein the housing includes vertically spaced internal registration surfaces useful to locate each filter cartridge of the series of vertically spaced filter cartridges. 
     Another feature of the present application provides wherein a fluid flow path is provided from a bottom of the filter housing, along an interior wall of the filter housing, and exiting through an opened outlet of the vertically spaced outlets. 
     Still another feature of the present application further includes a well at the bottom of the housing. 
     Yet another feature of the present application provides wherein each of the vertically spaced outlets include a centerline that coincides with a top surface of each of the corresponding filter cartridge in the series of vertically spaced filter cartridges. 
     Yet still another feature of the present application further includes a diffuser cap situated at a top of the housing. 
     Still yet another feature of the present application further includes the series of vertically spaced filter cartridges. 
     Still yet another aspect of the present application provides an apparatus comprising a filter housing assembly that includes a filter housing and diffuser cap, the diffuser cap structured to be positioned atop the housing and including an inlet for the receipt of water and lubricant mixture and an outlet that provides the mixture to the filter housing, the filter housing having an internal surface that includes plurality of internal registration surfaces distributed along a height of the internal surface and structured to permit insertion of a plurality of filter cartridges stacked upon and in fluid communication with one another when the plurality of filter cartridges are oriented in an insertion position, the plurality of internal registration surfaces also structured to discourage removal of the plurality of filter cartridges when the plurality of filter cartridges are oriented in a locked position. 
     A feature of the present application provides wherein the plurality of internal registration surfaces are protrusions that extend into an internal space defined by the filter housing. 
     Another feature of the present application provides wherein the plurality of internal registration surfaces are equally spaced from one another along the height of the internal surface. 
     Still another feature of the present application provides wherein the internal registration surfaces distributed along the height include a plurality of registration surfaces at the same height. 
     Yet another feature of the present application provides wherein the internal surface is cylindrical in shape. 
     Yet still another feature of the present application provides wherein the filter housing includes a well at the bottom defined between standoffs to collect filtered water. 
     Still yet another feature of the present application provides wherein the filter housing includes a plurality of exit passages distributed along the height of the internal surface. 
     Still yet another aspect of the present application provides an apparatus comprising a filter housing structured to contain a plurality of individual filter canisters that when installed are stacked upon one another and are capable of filtering lubricant from water, the filter housing having a plurality of filter positions each defined by at least one registration surface that correspond with each separate filter position of the plurality of filter positions, each of the at least one registration surface vertically spaced from one another and configured to engage a filter located at a filter position when installed in the filter housing, the filter housing also including a series of vertically spaced outlets where each outlet corresponds to each of the separate filter positions, the vertically spaced outlets structured to selectively receive a removable outlet plug. 
     A feature of the present application provides wherein the registration surfaces acts to urge the filter cartridges in a downward direction when the filter cartridges are installed at their separate filter positions. 
     Another feature of the present application provides wherein each filter position includes a plurality of registration surfaces. 
     Still another feature of the present application provides wherein the registration surfaces extend from an inner surface of the filter housing. 
     Yet another feature of the present application provides wherein the removable outlet plug is a threaded plug. 
     Yet still another feature of the present application provides wherein each of the vertically spaced outlets have a centerline that intersects a top of the respective filter cartridge when installed in the respective filter position. 
     Still yet another feature of the present application provides wherein the filter housing also includes a drain discharge port located at the bottom of the housing beneath all of the vertically spaced outlets. 
     An aspect of the present application provides an apparatus comprising a filter housing having an inner surface that forms an open interior into which can be inserted a plurality of filter cartridges, the inner surface having a plurality of vertically spaced registration surfaces suitable for receiving the plurality of filter cartridges and affixing the filter cartridges a vertical filtering position, the filter housing also having a plurality of vertically spaced outlet ports in which at least one outlet port is opened and at least another outlet port is closed, at least one filter cartridge disposed within the filter housing, the at least one filter cartridge having a registration surface rotated to engage the registration surface of the filter housing, the engagement of the at least one filter cartridge registration surface and the filter housing registration surface structured to discourage removal of the filter cartridge as well as seat the filter cartridge in place to form a fluid flow path of the filter housing, and a removable outlet port plug covering the at least another outlet port. 
     A feature of the present application provides further includes a plurality of pipe extensions of a plurality of different lengths. 
     Another feature of the present application provides wherein the at least one filter cartridge includes feet. 
     Still another feature of the present application further includes a pipe extension positioned between the diffuser cap and the at least one filter cartridge. 
     Yet another feature of the present application further includes an additional filter cartridge. 
     Yet still another feature of the present application provides wherein the at least one filter cartridge includes a ridge shaped registration surface. 
     Still yet another feature of the present application provides wherein the at least one filter cartridge includes zeolite rock filtering media, and wherein the at least one filter cartridge is made of an organic polymer. 
     Still another aspect of the present application provides an apparatus comprising a kit including a filter housing, a first filter cartridge, and a pipe extension, wherein: the filter housing including a plurality of registration surfaces arranged vertically within an open interior of the filter housing, the filter housing also including a plurality of outlet ports arranged vertically along an exterior of the filter housing; the first filter cartridge including a registration surface structured to cooperate with the registration surface of the filter housing such that when the first filter cartridge is inserted and rotated into place the cooperative engagement of the filter housing registration surface and the first filter cartridge registration surface discourage removal of the first filter cartridge; and the pipe extension including a first end structured to engage the diffuser cape and a second end structured to engage the first filter cartridge, the pipe extension forming a fluid flow path from the diffuser cap to the first filter cartridge. 
     A feature of the present application further includes a second filter cartridge having a registration surface, as well as an inlet and an outlet, the inlet of the second filter cartridge configured to be received by the outlet of the filter cartridge. 
     Another feature of the present application provides wherein the first end of the pipe extension is identical to the second end of the pipe extension. 
     Still another feature of the present application provides wherein the first end of the pipe extension is structured for sliding engagement with the diffuser cap, and the second end of the pipe extension is structured for sliding engagement with an inlet of the first filter cartridge. 
     Yet another feature of the present application provides wherein the plurality of registration surfaces of the filter housing are formed as protrusions into an interior of the filter housing, and the registration surface of the first filter cartridge circumferentially extends over less than 45 degrees. 
     Yet still another feature of the present application provides the registration surface of the first filter cartridge circumferentially extends over less than 20 degrees. 
     Yet still another aspect of the present application provides a method comprising removing a diffuser cap from a filter housing that contains at least one filter cartridge among several possible filter cartridges configured to be stacked upon one another, the diffuser cap structured to be in liquid communication with a condensate drain of an air compressor system, performing one of a reducing the number of filter cartridges present in the housing or adding an additional filter cartridge to the housing, and inserting a new pipe extension into the housing to connect the diffuser cap with a top filter cartridge present in the filter housing. 
     A feature of the present application provides wherein the new pipe extension is a fresh pipe extension of different length than a previous pipe extension used in the filter housing. 
     Another feature of the present application further includes draining residual fluid from within the filter housing during a servicing of the filter cartridges. 
     Still another feature of the present application provides wherein the filter housing includes a plurality of port outlets for the discharge of filtered water, and which further includes covering an outlet plug on a first port outlet, and removing an outlet plug on a second port outlet. 
     Yet another feature of the present application provides wherein the covering includes installing the outlet plug from the second port outlet on to the first port outlet. 
     Yet still another feature of the present application provides wherein the at least one filter cartridge is made of organic polymer. 
     Still yet another feature of the present application provides wherein the at least one filter cartridge includes a zeolite rock filter media. 
     While the invention has been illustrated and described in detail in the drawings and foregoing description, the same is to be considered as illustrative and not restrictive in character, it being understood that only the preferred embodiments have been shown and described and that all changes and modifications that come within the spirit of the inventions are desired to be protected. It should be understood that while the use of words such as preferable, preferably, preferred or more preferred utilized in the description above indicate that the feature so described may be more desirable, it nonetheless may not be necessary and embodiments lacking the same may be contemplated as within the scope of the invention, the scope being defined by the claims that follow. In reading the claims, it is intended that when words such as “a,” “an,” “at least one,” or “at least one portion” are used there is no intention to limit the claim to only one item unless specifically stated to the contrary in the claim. When the language “at least a portion” and/or “a portion” is used the item can include a portion and/or the entire item unless specifically stated to the contrary. 
     Unless specified or limited otherwise, the terms “mounted,” “connected,” “supported,” and “coupled” and variations thereof are used broadly and encompass both direct and indirect mountings, connections, supports, and couplings. Further, “connected” and “coupled” are not restricted to physical or mechanical connections or couplings.