CA2999315C - Water filtration apparatus with improved filter cartridge housing and distributor - Google Patents
Water filtration apparatus with improved filter cartridge housing and distributor Download PDFInfo
- Publication number
- CA2999315C CA2999315C CA2999315A CA2999315A CA2999315C CA 2999315 C CA2999315 C CA 2999315C CA 2999315 A CA2999315 A CA 2999315A CA 2999315 A CA2999315 A CA 2999315A CA 2999315 C CA2999315 C CA 2999315C
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- distributor
- housing
- valve
- shut
- assembly
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 238000001914 filtration Methods 0.000 title claims abstract description 31
- 238000007789 sealing Methods 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000009428 plumbing Methods 0.000 abstract description 8
- 230000007246 mechanism Effects 0.000 abstract description 3
- 239000000706 filtrate Substances 0.000 description 6
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 229920001577 copolymer Polymers 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 229920003020 cross-linked polyethylene Polymers 0.000 description 2
- 239000004703 cross-linked polyethylene Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229920001634 Copolyester Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000010805 inorganic waste Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/114—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for inward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
- B01D35/147—Bypass or safety valves
- B01D35/1475—Pressure relief valves or pressure control valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
- B01D35/153—Anti-leakage or anti-return valves
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/074—Arrangement of water treatment devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/29—Filter cartridge constructions
- B01D2201/291—End caps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/30—Filter housing constructions
- B01D2201/301—Details of removable closures, lids, caps, filter heads
- B01D2201/302—Details of removable closures, lids, caps, filter heads having inlet or outlet ports
- B01D2201/303—Details of removable closures, lids, caps, filter heads having inlet or outlet ports not arranged concentrically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/40—Special measures for connecting different parts of the filter
- B01D2201/4015—Bayonet connecting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/40—Special measures for connecting different parts of the filter
- B01D2201/4084—Snap or Seeger ring connecting means
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/004—Seals, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/006—Cartridges
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Water Treatment By Sorption (AREA)
Abstract
An improved cartridge housing assembly and distributor is provided for a water filtration system installed at a point-of-use or a point-of entry of plumbing networks in buildings. The improvements include a mechanism for actuating a shut-off valve and a pressure-relief valve upon removing the housing assembly from the distributor, a bayonet-type mount between the housing assembly and the distributor, a housing lid to prevent spilling of water when the housing assembly is removed from the distributor, and fastener clips that allow for modular attachment of the distributor to plumbing fittings and a mounting bracket.
Description
WATER FILTRATION APPARATUS WITH IMPROVED
FILTER CARTRIDGE HOUSING AND DISTRIBUTOR
Field of the Invention [0001] The present invention generally relates to water filtration systems installed at a point-of-use or a point-of entry of plumbing networks in buildings. More particularly, the present invention relates to improvements to a filter cartridge housing assembly and distributor that include a mechanism for actuating a shut-off valve and a pressure-relief valve upon removing the housing assembly from the distributor, a locking mount between the housing assembly and the distributor, a housing lid to prevent spilling of water when the housing assembly is removed from the distributor, and fasteners clips that allow for modular attachment of the distributor to plumbing fittings and a mounting bracket.
Background of the Invention
FILTER CARTRIDGE HOUSING AND DISTRIBUTOR
Field of the Invention [0001] The present invention generally relates to water filtration systems installed at a point-of-use or a point-of entry of plumbing networks in buildings. More particularly, the present invention relates to improvements to a filter cartridge housing assembly and distributor that include a mechanism for actuating a shut-off valve and a pressure-relief valve upon removing the housing assembly from the distributor, a locking mount between the housing assembly and the distributor, a housing lid to prevent spilling of water when the housing assembly is removed from the distributor, and fasteners clips that allow for modular attachment of the distributor to plumbing fittings and a mounting bracket.
Background of the Invention
[0002] Figure 1 shows a side view of a conventional multi-stage water filtration system, as may be installed as a point-of-use system beneath a sink to filter water for a single faucet.
The system has a mounting bracket that attaches multiple filter assemblies linked in series to a structure such as the inside wall of an under-sink cabinet. Each filter assembly has a distributor that is connected to inflow and outflow lines, and a filter housing that holds a filter cartridge. The distributor directs unfiltered water from the inflow line to the filter housing where the filter cartridge traps contaminants, and directs filtered water from the filter housing to the outflow line. The filter housing has a canister form with an open top end and a closed bottom end. The bottom of the distributor and the top end of the filter housing have complementary threads so that the filter housing can be screwed onto the distributor, which acts as a cap for the open top end of the filter housing.
The system has a mounting bracket that attaches multiple filter assemblies linked in series to a structure such as the inside wall of an under-sink cabinet. Each filter assembly has a distributor that is connected to inflow and outflow lines, and a filter housing that holds a filter cartridge. The distributor directs unfiltered water from the inflow line to the filter housing where the filter cartridge traps contaminants, and directs filtered water from the filter housing to the outflow line. The filter housing has a canister form with an open top end and a closed bottom end. The bottom of the distributor and the top end of the filter housing have complementary threads so that the filter housing can be screwed onto the distributor, which acts as a cap for the open top end of the filter housing.
[0003] When the filter cartridge in a conventional water filtration system requires replacement, the lines connected to the distributor are isolated with valves.
Next, any excess pressure in the filter housing is relieved by opening the faucet to which the system is connected. Alternatively, it is known to provide filter cartridges having integrated pressure release mechanisms. However, such filter cartridges are made of plastic, which creates additional non-biodegradable waste, and may not be readily recyclable.
The filter housing is then unscrewed from the distributor. However, since a water-tight seal between the filter housing and the distributor is imperative, the filter housing should be screwed on tightly to the distributor. Therefore, unscrewing the filter housing from the distributor may require a substantial torque, which may be greater than that which can be applied by a typical user's unassisted hands. As such, a splined key wrench may be provided to engage grooves on the outer surface of the housing to screw on and screw off the housing from the distributor, but this makes the system more complicated. Moreover, upon unscrewing the housing from the distributor, the filter housing may be full of water, which may spill out of the open top end of the filter housing before the water can be poured into a bucket or down a drain.
Next, any excess pressure in the filter housing is relieved by opening the faucet to which the system is connected. Alternatively, it is known to provide filter cartridges having integrated pressure release mechanisms. However, such filter cartridges are made of plastic, which creates additional non-biodegradable waste, and may not be readily recyclable.
The filter housing is then unscrewed from the distributor. However, since a water-tight seal between the filter housing and the distributor is imperative, the filter housing should be screwed on tightly to the distributor. Therefore, unscrewing the filter housing from the distributor may require a substantial torque, which may be greater than that which can be applied by a typical user's unassisted hands. As such, a splined key wrench may be provided to engage grooves on the outer surface of the housing to screw on and screw off the housing from the distributor, but this makes the system more complicated. Moreover, upon unscrewing the housing from the distributor, the filter housing may be full of water, which may spill out of the open top end of the filter housing before the water can be poured into a bucket or down a drain.
[0004] Proper installation and assembly of a conventional multi-stage water filtration system, requires plumbing skills that may be beyond those possessed by the typical home owner. This is because the system requires installation of standard tubing with threaded and taped fittings, or push-fit fittings to create a water-tight flow path between the filter assemblies. Further, if a particular stage of the system needs to be isolated for trouble-shooting, then the associated fittings must be dismantled and re-installed, which creates a major disincentive to doing so.
[0005] A conventional multi-stage water filtration system cannot be readily re-configured for a different number of filter assemblies. This is because the bracket is specifically designed to hold a predetermined number of filter assemblies. This creates complexity for manufacturers and vendors who wish to supply single-stage systems, double-stage systems, and triple-stage systems, because such systems must be supplied as different sets of parts.
This also prevents a user from upgrading an existing system with additional stages of filter assemblies. Rather, the user must replace the existing system in its entirety with a new system having the desired number of stages.
This also prevents a user from upgrading an existing system with additional stages of filter assemblies. Rather, the user must replace the existing system in its entirety with a new system having the desired number of stages.
[0006] Accordingly, there is a need in the art for a water filtration system that allows for cleaner and more convenient replacement of the filter cartridge, and greater ease of manufacturing, installation, upgrading, and maintenance.
Summary of the Invention
Summary of the Invention
[0007] In a first aspect, the present invention comprises an apparatus for filtering water.
The apparatus comprises a housing assembly, a distributor, and a shut-off valve. The housing assembly comprises a housing canister that defines a housing interior for holding a filtration medium. The distributor defines at least part of an inflow passage for directing water flow from a distributor inlet to the housing interior, and at least part of an outflow passage for directing water flow from the housing interior to a distributor outlet. The shut-off valve is for regulating water flow between the housing interior and the distributor inlet, and the distributor outlet. The housing assembly is removably attachable to the distributor by rotation relative to the distributor in a first direction, whereupon the housing assembly actuates movement of the shut-off valve to an open position permitting water flow through the inflow passage and through the outflow passage. The housing assembly is detachable from the distributor by rotation relative to the distributor in a second direction opposite to the first direction, whereupon the housing assembly actuates movement of the shut-off .. valve to a closed position preventing water flow through the inflow passage and through the outflow passage.
The apparatus comprises a housing assembly, a distributor, and a shut-off valve. The housing assembly comprises a housing canister that defines a housing interior for holding a filtration medium. The distributor defines at least part of an inflow passage for directing water flow from a distributor inlet to the housing interior, and at least part of an outflow passage for directing water flow from the housing interior to a distributor outlet. The shut-off valve is for regulating water flow between the housing interior and the distributor inlet, and the distributor outlet. The housing assembly is removably attachable to the distributor by rotation relative to the distributor in a first direction, whereupon the housing assembly actuates movement of the shut-off valve to an open position permitting water flow through the inflow passage and through the outflow passage. The housing assembly is detachable from the distributor by rotation relative to the distributor in a second direction opposite to the first direction, whereupon the housing assembly actuates movement of the shut-off .. valve to a closed position preventing water flow through the inflow passage and through the outflow passage.
[0008] In an embodiment of the apparatus, the housing assembly comprises a housing lid removably attachable, in sealing relationship, to the housing canister, wherein the housing lid defines a housing lid aperture permitting water flow between the housing interior and the distributor. The housing lid may engage the shut off valve to actuate movement of the shut-off valve between the open position and the closed position. The housing lid may comprise a pressure relief valve for relieving pressure from the housing interior. Rotation of the housing assembly relative to distributor in the first direction actuates movement of the pressure-relief valve to a closed position preventing gas flow out of the housing interior.
.. Rotation of the housing assembly relative to distributor in the second direction actuates movement of the pressure-relief valve to an open position permitting gas flow out of the housing interior.
.. Rotation of the housing assembly relative to distributor in the second direction actuates movement of the pressure-relief valve to an open position permitting gas flow out of the housing interior.
[0009] In a second aspect, the present invention comprises an apparatus for filtering water.
The apparatus comprises a housing canister, a housing lid, and a distributor, and a housing lid. The housing canister defines a housing interior for holding a filtration medium. The housing lid is removably attached, in sealing relationship, to the housing canister. The housing lid defines a housing lid aperture permitting water flow into and out of the housing interior. The distributor is removably attachable to the housing assembly, and defines at least part of an inflow passage for directing water flow from a distributor inlet to the housing interior via the housing lid aperture, and at least part of an outflow passage for directing water flow from the housing interior to a distributor outlet via the housing lid aperture.
The apparatus comprises a housing canister, a housing lid, and a distributor, and a housing lid. The housing canister defines a housing interior for holding a filtration medium. The housing lid is removably attached, in sealing relationship, to the housing canister. The housing lid defines a housing lid aperture permitting water flow into and out of the housing interior. The distributor is removably attachable to the housing assembly, and defines at least part of an inflow passage for directing water flow from a distributor inlet to the housing interior via the housing lid aperture, and at least part of an outflow passage for directing water flow from the housing interior to a distributor outlet via the housing lid aperture.
[0010] In an embodiment of the apparatus, the housing assembly is removably attachable to the distributor by a bayonet-type mount comprising an L-shaped slot formed by one of the housing lid and the distributor, and a radially extending tab formed by the other one of the housing lid and the distributor. The L-shaped slot may define a stepped-shaped detent that causes the housing lid to move axially into engagement with the distributor upon movement of the radially extending tab past the stepped-shaped detent.
[0011] In a third aspect, the present invention comprises a distributor assembly for use in a water filtering apparatus comprising a housing for holding a filtration medium. The assembly comprises a distributor for directing water flow into and out of the housing, and a plurality of identical factors. The distributor defines a distributor inlet for removably receiving an inlet fitting in sealing relationship to the distributor. The distributor also defines a distributor outlet for removably receiving an outlet fitting in sealing relationship to the distributor. Each fastener comprises a pair of clip members resiliently separable from each other. A first fastener has clip members which are removably insertable through a first pair of passages defined by the distributor to engage the inlet fitting received in the distributor inlet, and thereby removably secure the inlet fitting within the distributor inlet.
A second fastener has clip members which are removably insertable through a second pair of passages defined by the distributor to engage the outlet fitting received in the distributor outlet, and thereby removably secure the outlet fitting within the distributor outlet.
A second fastener has clip members which are removably insertable through a second pair of passages defined by the distributor to engage the outlet fitting received in the distributor outlet, and thereby removably secure the outlet fitting within the distributor outlet.
[0012] In an embodiment of the assembly, the assembly may further comprise a bracket for mounting the water filtering apparatus to the structure. A third fastener has clip members which are removably insertable through a third pair of passages defined by the distributor to engage the bracket, and thereby removably secure the bracket to the distributor.
[0013] In an embodiment of the assembly, each of the fasteners may further comprise a tab removably insertable into one of a plurality of slots defined by the distributor to secure the fastener to the distributor.
Brief Description of the Drawings
Brief Description of the Drawings
[0014] In the drawings shown in the specification, like elements may be assigned like reference numerals. The drawings are not necessarily to scale, with the emphasis instead placed upon the principles of the present invention. Additionally, each of the embodiments depicted are but one of a number of possible arrangements utilizing the fundamental concepts of the present invention.
[0015] Figure 1 shows a side view of a water filtration system in the prior art.
[0016] Figure 2 shows an exploded perspective view of an embodiment of an apparatus of the present invention.
[0017] Figure 3 shows a perspective view of the apparatus of Figure 2.
[0018] Figure 4 shows a front cross-sectional midline view of an upper portion of the apparatus of Figure 2, without the inlet fitting and the outlet fitting shown in Figure 2.
[0019] Figure 5 shows a top perspective view of an upper portion of the housing canister of the apparatus of Figure 2.
[0020] Figure 6 shows a top perspective view of the housing lid of the apparatus of Figure 2.
[0021] Figure 7 shows a bottom perspective view of the distributor of the apparatus of Figure 2.
[0022] Figure 8 shows a bottom perspective view of the shut-off valve of the apparatus of Figure 2.
[0023] Figure 9 shows an exploded perspective view of the housing lid and pressure relief valve of the apparatus of Figure 2.
[0024] Figure 10 shows an exploded perspective view of the assembly of the distributor, fittings, bracket, and fasteners of the apparatus of Figure 2.
[0025] Figure 11 shows a perspective view of two of the apparatuses of Figure 2 connected together in a multi-stage water filtration system, with each of the apparatuses having an attached bracket.
[0026] Figure 12 shows a top view of two of the apparatuses of Figure 2 connected together in a multi-stage water filtration system, with the apparatuses having a single attached bracket.
Detailed Description of Preferred Embodiment
Detailed Description of Preferred Embodiment
[0027] Definitions. Any term or expression not expressly defined herein shall have its commonly accepted definition understood by a person skilled in the art.
[0028] Overview. Figure 2 shows an embodiment of an apparatus (10) of the present invention for filtering water. Referring to Figures 2 and 3, the embodiment of the apparatus (10) includes a housing assembly comprising a housing canister (20) and a housing lid (22).
The embodiment of the apparatus (10) also includes a a filter cartridge (40), a lower filter cartridge cap (42), an upper filter cartridge cap (44), a distributor (60), an inlet fitting (80), an outlet fitting (100), a bracket (120), and three fasteners (140a, 140b, 140c). Referring to Figures 4 and 8, the embodiment of the apparatus (10) also includes a shut-off valve (160).
Referring to Figure 9, the embodiment of the apparatus (10) also includes a pressure-relief valve (180). These and other parts of the apparatus (10), and its use and operation are described in greater detail below.
The embodiment of the apparatus (10) also includes a a filter cartridge (40), a lower filter cartridge cap (42), an upper filter cartridge cap (44), a distributor (60), an inlet fitting (80), an outlet fitting (100), a bracket (120), and three fasteners (140a, 140b, 140c). Referring to Figures 4 and 8, the embodiment of the apparatus (10) also includes a shut-off valve (160).
Referring to Figure 9, the embodiment of the apparatus (10) also includes a pressure-relief valve (180). These and other parts of the apparatus (10), and its use and operation are described in greater detail below.
[0029] Housing canister. The housing canister (20) defines a housing interior (24) for holding a filtration medium, which may be in the form of a tubular filter cartridge (40).
The housing canister (20) extends vertically from a bottom end that is closed, to a top end that defines an opening sized to allow the filtration medium to be inserted into and removed from the housing interior (24).
The housing canister (20) extends vertically from a bottom end that is closed, to a top end that defines an opening sized to allow the filtration medium to be inserted into and removed from the housing interior (24).
[0030] Tubular filter cartridges (40) are known to persons of ordinary skill in the art of water filtration systems. The present invention is not limited by any particular type of filtration medium of the filter cartridge (40). Filter cartridges (40) are available in a variety of sizes, and may contain a variety of different types of filtration media. As a non-limiting example, the filter cartridge (40) may be a "pre-filter" made of polypropylene, for removing particulate contaminants such as sediment and rust particles from water. As another non-limiting example, the filter cartridge (40) may contain granular activated carbon for removing chlorine, heavy metals, and volatile organic compounds from water.
[0031] As shown in Figure 4, when the filter cartridge (40) is disposed in the housing interior (24), the filter cartridge (40) divides the housing interior (24) into a feed zone (26) and a filtrate zone (28). The feed zone (26) refers to that portion of the housing interior (24) through which water flows before passing through the filter cartridge (40).
Conversely, the filtrate zone (28) refers to that portion of the housing interior (24) through which water flows after passing through the filter cartridge (40). In the embodiment shown in Figure 4, the feed zone (26) and filtrate zone (28) are located on the radially outward and radially inward sides, respectively, of the filter cartridge (40), so that water flows radially inwards through the filter cartridge (40) towards the center of the housing canister (20). In other embodiments the position of the feed zone (26) and filtrate zone (28) may be reversed so that water flows radially outwards through the filter cartridge (40) away from the center of the housing canister (20).
Conversely, the filtrate zone (28) refers to that portion of the housing interior (24) through which water flows after passing through the filter cartridge (40). In the embodiment shown in Figure 4, the feed zone (26) and filtrate zone (28) are located on the radially outward and radially inward sides, respectively, of the filter cartridge (40), so that water flows radially inwards through the filter cartridge (40) towards the center of the housing canister (20). In other embodiments the position of the feed zone (26) and filtrate zone (28) may be reversed so that water flows radially outwards through the filter cartridge (40) away from the center of the housing canister (20).
[0032] In the embodiment shown in Figures 2 and 4, an upper filter cartridge cap (44) is provided. In the embodiment shown, the upper filter cartridge cap (44) is made of plastic.
In the embodiment shown, the upper filter cartridge cap (44) defines a central opening (45) that extends through a central housing lid aperture (30) (as also seen in Figure 6) from a bottom end of the cap (44) that is disposed in the opening defined by the filter cartridge (40) to a top end of the cap (44) that is disposed in an opening of the shut-off valve (160) (as also seen in Figure 8). An 0-ring gasket is provided at the upper end of the cap (44) to create a water-tight seal between the cap (44) and the shut-off valve (160).
In the embodiment shown, the upper filter cartridge cap (44) defines a central opening (45) that extends through a central housing lid aperture (30) (as also seen in Figure 6) from a bottom end of the cap (44) that is disposed in the opening defined by the filter cartridge (40) to a top end of the cap (44) that is disposed in an opening of the shut-off valve (160) (as also seen in Figure 8). An 0-ring gasket is provided at the upper end of the cap (44) to create a water-tight seal between the cap (44) and the shut-off valve (160).
[0033] In the embodiments shown in the Figures, the housing canister (20) is molded from propylene copolymer or copolyester resin. The housing canister (20) may be opaque, or may be transparent so that the filter cartridge (40) is visible when inside the housing interior (24). In other embodiments, the housing canister (20) may be made of different materials.
[0034] In the embodiments shown in the Figures, the housing canister (20) has a circular horizontal cross-sectional shape so that the housing canister (20) as a whole has a substantially cylindrical shape. In other embodiments, the housing canister (20) may have different cross-sectional shapes.
[0035] Housing lid. The housing lid (22) is removably attached in sealing relationship to the top end of the housing canister (20). In the embodiment shown in Figure 6, the housing lid (22) defines a central housing lid aperture (30) permitting water flow between the housing interior (24) and the distributor (60). Notwithstanding the housing lid aperture (30), the housing lid (22) helps to prevent accidental spillage of water out of the housing interior (24), when the housing canister (20) is detached from the distributor (60).
Preferably, the housing lid aperture (30) is substantially smaller than the housing lid (22).
Preferably, the housing lid aperture (30) is substantially smaller than the housing lid (22).
[0036] In the embodiment shown in the Figures, the housing lid (22) is molded from propylene copolymer. In other embodiments, the housing lid (22) may be made of different materials.
[0037] In the embodiment shown in Figure 4, the top end of the housing canister (20) and the bottom surface of the housing lid (22) define a threaded connection (32) that allows the housing lid (22) to be screwed onto the housing top end. Multiple 0-ring gaskets made of ethylene propylene diene monomer (EPDM) rubber are provided to better ensure a water-tight seal between the housing lid (22) and the housing canister (20) top end.
In other embodiments, the housing lid (22) may be removably attached in sealing relationship to the top end of the housing canister (20) using other types of connections and sealing elements as necessary.
In other embodiments, the housing lid (22) may be removably attached in sealing relationship to the top end of the housing canister (20) using other types of connections and sealing elements as necessary.
[0038] In the embodiment shown in Figure 5, the housing canister (20) defines a notch (34). In the embodiment shown in Figure 6, the bottom edge of the housing lid (22) defines a downwardly extending tab (36) that is received in the notch (34). It will be understood that the downwardly extending tab (36) is sufficiently flexible to travel into and out of the notch (34) when the housing lid (22) is screwed onto and unscrewed from the housing canister (20). The engagement of the tab (36) in the notch (34) limits tightening of the housing lid (22) on to the housing canister (20). It also ensures that an arrow marking (38) on the outer surface of the housing lid (22) may be aligned with one of a series markings (39a, 39b, 39c) on the outer surface of the distributor (60) as shown in the embodiment shown in Figure 7, so as to properly indicate the state of attachment of the housing assembly to the distributor (60), and the position of the shut-off valve (160) and pressure-relief valve (180), as discussed below.
[0039] Distributor. The distributor (60) defines at least part of an inflow passage for directing water flow from a distributor inlet (62) to the feed zone (26) of the housing interior (24), and at least part of an outflow passage for directing water flow from the filtrate zone (28) of the housing interior (24) to a distributor outlet (64).
In the embodiment shown in Figure 4, water flow through the inflow passage and the outflow passage is shown by dashed lines.
In the embodiment shown in Figure 4, water flow through the inflow passage and the outflow passage is shown by dashed lines.
[0040] In the embodiment shown in the Figures, the distributor (60) is molded from propylene copolymer. In other embodiments, the distributor (60) may be made of different materials.
[0041] In contrast to a conventional system, the embodiments of the housing assembly and the distributor (60) shown in the Figures do not rely on a water-tight threaded connection between the housing canister (20) and the distributor (60). This is possible because, as shown in Figure 4, the arrangement of the housing lid (22), in conjunction with the housing canister (20), filter cartridge upper cap (44) and shut-off valve (160), and sealing elements between them collectively provide for a water-tight connection between the housing .. interior (24) and the distributor (60). In one embodiment, this water-tight seal may be rated to remain water-tight up to pressures of 150 psi.
[0042] In the embodiment shown in the Figures, the housing assembly is removably attached to the distributor (60) by a bayonet-type mount. Referring to the embodiment shown in Figure 6, the outer surface of the housing lid (22) defines a pair of L-shaped slots (46a, 46b) spaced about 180 degrees apart from each other. Referring to the embodiment shown in Figure 7, the bottom surface of the distributor (60) defines a pair of radially inwardly extending tabs (48a, 48b) spaced about 180 degrees apart from each other. In other embodiments, the housing lid (22) may define the tabs, while the distributor (60) defines the L-shaped slots. To secure the housing assembly to the distributor (60), the user positions the housing assembly so that the tabs (48a, 48b) are aligned with the vertical leg of the L-shaped slots (46a, 46b). In this position, the arrow marking (38) on the housing lid (22) is aligned with the open padlock icon marking (39c) on the distributor (60). As the user rotates the housing assembly relative to the distributor (60), the tabs (48a, 48b) must pass through a stepped-shaped detent in the vertical leg of the L-shaped slots (46a, 46b).
Upon doing so, the housing assembly moves upward into closer engagement with the distributor (60). The stepped-shaped detent may also provide the user with positive tactile feedback, or auditory feedback (e.g., a "click" sound), to indicate that the housing assembly is secured to the distributor (60). In this position, the arrow marking (38) on the housing lid (22) is aligned with the closed padlock icon marking (39b) labelled "OFF"
on the distributor (60). Further rotation of the housing assembly relative to the distributor (60) will result in alignment of the arrow marking (38) on the housing lid (22) with the closed padlock icon marking (39a) labelled "FLOW ON" on the distributor (60).
Upon doing so, the housing assembly moves upward into closer engagement with the distributor (60). The stepped-shaped detent may also provide the user with positive tactile feedback, or auditory feedback (e.g., a "click" sound), to indicate that the housing assembly is secured to the distributor (60). In this position, the arrow marking (38) on the housing lid (22) is aligned with the closed padlock icon marking (39b) labelled "OFF"
on the distributor (60). Further rotation of the housing assembly relative to the distributor (60) will result in alignment of the arrow marking (38) on the housing lid (22) with the closed padlock icon marking (39a) labelled "FLOW ON" on the distributor (60).
[0043] Shut-off valve. The apparatus (10) may also comprise a shut-off valve (160) for regulating water flow between the housing interior (24) and the distributor inlet (62), and the distributor outlet (64). In the embodiment shown in Figures 4 and 8, the shut-off valve (160) comprises a substantially cylindrical tubular member having two shut-off valve apertures (162a, 162b) formed through its walls. Sealing elements in the form of 0-ring gaskets are provided around the shut-off valve (160) to create a water-tight seal with inner walls of the distributor (60). In this embodiment, the shut-off valve apertures (162a, 162b) are spaced about 180 degrees apart from each other, so that they can be aligned with the distributor inlet (62) and distributor outlet (64). Referring to Figure 4, when the aperture (162a) is aligned with the distributor inlet (62), the aperture (162a) forms part of the inflow passage from the distributor inlet (62), through the annular space defined between the portion of the housing lid (22) defining the central housing lid aperture (30) and the upper end of the upper filter cartridge cap (44), to the feed zone (26) of the housing interior (24).
Referring to Figure 4, when the aperture (162b) is aligned with the distributor outlet (64), the aperture (162b) forms part of the outflow passage from the filtrate zone (28) of the housing interior (24), through the opening (45) of the upper filter cartridge cap (44), to the distributor outlet (64). As seen in Figure 4, an internal structure of the shut-off valve (160) and the sealing relationship of the shut-off valve (160) to the upper end of the upper filter cartridge cap (44) isolates the inflow passage from the outflow passage.
Referring to Figure 4, when the aperture (162b) is aligned with the distributor outlet (64), the aperture (162b) forms part of the outflow passage from the filtrate zone (28) of the housing interior (24), through the opening (45) of the upper filter cartridge cap (44), to the distributor outlet (64). As seen in Figure 4, an internal structure of the shut-off valve (160) and the sealing relationship of the shut-off valve (160) to the upper end of the upper filter cartridge cap (44) isolates the inflow passage from the outflow passage.
[0044] Referring to Figure 4, the top end of the shut-off valve (160) is attached to the bottom surface of the distributor (60) by a screw and nut assembly (164), while remaining free to rotate relative to the distributor (60). Referring to Figure 8, the bottom end of the distributor (60) defines a pair of notches (166a, 166b) spaced about 180 degrees apart from each other. Referring to the embodiment shown in Figure 6, the upper surface of the housing lid (22) forms a pair of protrusions (168a, 168b) that engage the notches (166a, 166b). Accordingly, when the user rotates the housing assembly relative to the distributor (60), the shut-off valve (160) rotates in unison with the housing assembly.
When the housing assembly is positioned so that the arrow marking (38) on the housing lid (22) is aligned with the closed padlock icon marking (39b) labelled "OFF" on the distributor (60), the shut-off valve (160) is in a closed position in which the shut-off valve apertures (162a, 162b) are misaligned with the distributor inlet (62) and the distributor outlet (64), so that the shut-off valve (160) prevents water flow from the distributor inlet (62) to the housing interior (24), and from the housing interior (24) to the distributor outlet (64). When the user further rotates the housing assembly so that the arrow marking (38) on the housing lid (22) is aligned with the closed padlock icon marking (39a) labelled "FLOW ON" on the distributor (60), the shut-off valve (160) is in an open position in which the shut-off valve apertures (162a, 162b) are aligned with the distributor inlet (62) and the distributor outlet (64) to permit water flow from the distributor inlet (62) to the housing interior (24), and from the housing interior (24) to the distributor outlet (64). In this position, the housing assembly is also fully secured to the distributor (60).
When the housing assembly is positioned so that the arrow marking (38) on the housing lid (22) is aligned with the closed padlock icon marking (39b) labelled "OFF" on the distributor (60), the shut-off valve (160) is in a closed position in which the shut-off valve apertures (162a, 162b) are misaligned with the distributor inlet (62) and the distributor outlet (64), so that the shut-off valve (160) prevents water flow from the distributor inlet (62) to the housing interior (24), and from the housing interior (24) to the distributor outlet (64). When the user further rotates the housing assembly so that the arrow marking (38) on the housing lid (22) is aligned with the closed padlock icon marking (39a) labelled "FLOW ON" on the distributor (60), the shut-off valve (160) is in an open position in which the shut-off valve apertures (162a, 162b) are aligned with the distributor inlet (62) and the distributor outlet (64) to permit water flow from the distributor inlet (62) to the housing interior (24), and from the housing interior (24) to the distributor outlet (64). In this position, the housing assembly is also fully secured to the distributor (60).
[0045] Pressure-relief valve. In the embodiment shown in Figure 9, the housing lid (22) comprises a pressure-relief valve (180) for relieving gas pressure from the housing interior (24) when the housing lid (22) is attached to the housing canister (20). On account of the sealing relationship between the housing lid (22) and the housing canister (20), air entrained in water flowing through the housing interior (24) may become trapped within the upper end of the housing interior (24). The trapped air may result in excessive backpressure that impedes water flow through the housing interior (24). The pressure-relief valve (180) may be opened to allow the trapped air to escape from the housing interior (24). In the embodiment shown in Figure 9, the pressure-relief valve (180) includes a button (182) on the upper surface of the housing lid (22), a screw (184) passing through a washer (186) and an opening (188) formed in the housing lid (22) and attached to the bottom end of the button, and a spring (190) disposed between the upper surface of the housing lid (22) and the bottom surface of the button (182) to bias the button (182) to a position that occludes the opening (188) in the housing lid (22).
[0046] In the embodiment shown in the Figures, the bottom surface of the distributor (60) is contoured to engage the button (182) as the housing assembly is rotated relative to the distributor (60). More specifically, when the housing assembly is rotated such that the arrow marking (38) on the housing lid (22) is aligned with the closed padlock icon marking (39a) labelled "OFF" on the distributor (60), the bottom surface of the distributor (60) pushes downward against the biasing force of the spring (190), so that the button (182) exposes the opening (188) in the housing lid (22) to allow gas flow out of the housing interior (24). Conversely, when the housing assembly is rotated such that the arrow marking (38) on the housing lid (22) is aligned with the closed padlock icon marking (39a) labelled "FLOW ON" on the distributor (60), the bottom surface of the distributor (60) allows the button (182) to return to its upwardly biased position in which it occludes the opening (188) in the housing lid (22), thus preventing gas flow out of the housing interior (24).
[0047] Inlet and outlet fittings, bracket, and fasteners. In the embodiment shown in Figure 10, the apparatus (10) includes an inlet fitting (80) and an outlet fitting (100). The inlet fitting (80) and the outlet fitting (100) are used to connect the apparatus (10) to an inflow line and an outflow line, respectively, which in use may be lines of a plumbing network, or the distributor inlet (62) or the distributor outlet (64) of another apparatus (10) when the apparatus (10) is used in a multi-stage water filtration system. In the embodiment shown in Figure 10, the inlet fitting (80) is adapted for connection to the distributor outlet (64) of the distributor (60) of another apparatus (10) of the present invention, while the outlet fitting (100) is adapted for a quick connection to a cross-linked polyethylene (PEX) outflow line. It will be understood that the present invention is not limited by any particular configuration of the inlet fitting (80) and the outlet fitting (100), which may be provided in a variety of sizes, configurations (e.g., straight and elbow configurations), and with a variety of sealing elements to suit different inflow and outflow lines.
[00481 In the embodiment shown in Figure 10, the apparatus (10) also includes three identical fasteners (140a, 140b, 140c). Each of the fasteners has a pair of opposed clip members (142). Each of the fasteners (140a, 140b, 140c) also has a tab (144) with a pair of tab members. In one embodiment, the fasteners (140a, 140b, 140c) may be made from propylene copolymer or other materials, allowing the clip members to be resiliently separated from each other, and allowing the tab members to be resiliently compressed towards each other.
[0049] In the embodiment shown in Figure 10, a first fastener (140a) is used to removably secure the inlet fitting (80) in the distributor inlet (62). After the inlet fitting (80) is inserted into the distributor inlet (62), the fastener (140a) is pushed so that the clip members (142a) are forced through passages (146a) defined by the distributor (60), and the tab (144a) is pushed into a slot (148a) defined by the distributor (60), whereupon the tab members are compressed by the slot (148a) to better secure the fastener (140a) to the distributor (60).
The passages (146a) defined by the distributor (60) allow the clip members of the fastener (140a) to contact and clamp against the inlet fitting (80), and thereby removably secure the inlet fitting (80) within the distributor inlet (62). In order to remove the inlet fitting (80) from the distributor inlet (62), the fastener (140a) is simply pulled so that the clip members (142a) are withdrawn from the passages (146a) and the tab (144a) is withdrawn from the slot (148a). A second fastener (140b) is used in an analogous manner to removably secure the outlet fitting (100) in the distributor outlet (64).
[0050] In the embodiment shown in Figure 10, the apparatus (10) also includes a bracket (120) for mounting the apparatus (10) to a structure (e.g., an inner wall of a cabinet under a sink). An upper portion defines a pair of bracket apertures (122).
[0051] In the embodiment of Figure 10, a third fastener (140c) is used to removably secure the bracket (120) to distributor (60). When the bracket (120) is inserted in a groove (150) defined by the upper surface of the distributor (60), the bracket apertures (122) are aligned with the passages (146c) defined by the distributor (60). The edges of the groove (150) define channels (152) that receive the edges (124) of the bracket (120) to retain the bracket (120) to the distributor (60). The fastener (140c) may then be pushed so that the clip members (142c) are forced through passages (146c) defined by the distributor (60) and the bracket apertures (122), and the tab (144c) is pushed into a slot (148c) defined by the distributor (60), whereupon the tab members are compressed by the slot (148c) to better secure the fastener to the distributor (60). The passages (146c) defined by the distributor (60) allow the clip members (142c) of the fastener (140c) to contact and clamp against the inner walls of the bracket (120) that define the bracket apertures (122), and thereby removably secure the bracket (120) to the distributor (60). In order to remove the bracket (120) from the distributor (60), the fastener (140c) is simply pulled so that the clip members (142c) are withdrawn from the passages (146c) and bracket apertures (122), and the tab (144c) is withdrawn from the slot (148c).
[0052] Use and operation. In an exemplary use of the embodiment of the apparatus (10) shown in Figure 11, two apparatuses (10a, 10b) may be connected together in a two-stage water filtration system. In other embodiments, a single apparatus (10) may be used in a single-stage system, or additional apparatuses (10) may be connected for a greater number of stages. As non-limiting examples, the system may be a point-of-use system beneath a sink to filter water for a single faucet, or as a larger point-of-entry or "whole home" system in a basement or a utility room to filter water for a plumbing network. In the embodiment shown in Figure 11, the inlet fitting (80) of the first apparatus (10a) and the outlet fitting (100) of the second apparatus (10b) are connected to an inflow line and an outflow line, respectively, of the plumbing network (not shown). A fitting directly connects the distributor outlet (64) of the first apparatus (10a) to the distributor inlet (62) of the second apparatus (10b).
[0053] Referring to the embodiment shown in Figure 11, when two of the apparatuses (10a, 10b) are placed side-by-side, with their distributors (60) abutting each other, the two distributors (60) collectively define a groove (154) that has dimensions that are the same as the groove (150) defined by a single one of the distributors (60) as shown in Figure 10.
Accordingly, as shown in Figure 12, a single bracket (120) may be inserted into the groove (154) and secured to both distributors (60) with a fastener (140) and used to mount both apparatuses (10a, 10b) to a structure, as an alternative to attaching one bracket (120) to each distributor (60) as shown in Figure 11.
[0054] When a filter cartridge in one of the apparatuses (10) requires replacement, the user rotates the housing assembly relative to the distributor (60) of that apparatus (10) so that the arrow marking (38) on the housing lid (22) moves from the closed padlock icon marking (39a) labelled "FLOW ON" on the distributor (60) to the open padlock icon marking (39c) on the distributor (60). When doing so, the housing lid (22) engages the shut-off valve (160) and moves it from the open position to the closed position, thereby isolating the apparatus (10) from its connected inflow and outflow lines.
Also, the bottom surface of the distributor (60) engages pressure-relief valve (180) to move it from the closed position to the open position to relieve any gas trapped in the housing.
[0055] In comparison with a conventional water filtration system, embodiments of the apparatus (10) of the present invention may be advantageous in the follow respects. First, no tools, or specialized skill is needed to connect the apparatuses (10) together, to the inflow and outflow line, or to the bracket (120). Rather, such connections may be made entirely by hand with the use of the provided fasteners (140). Second, on account of their modular nature, one of the apparatuses (10) may be conveniently removed from the system for servicing, or additional apparatuses (10) may be readily added to the system to increase the number of filtration stages. Third, the modular nature of the apparatuses (10) simplifies manufacturing and inventory management of the apparatus (10) for manufacturers and vendors of the apparatus (10). Fourth, no isolation valves need to be installed on the inflow and outflow lines, since each of the apparatuses (10) is equipped with its own internal shut-off valve (160). Fifth, there is no need for the user to undertake separate steps of closing valves on the inflow and outflow lines prior to removing the housing assembly from the distributor (60). This is because the shut-off valve (160) and the pressure-relief valve (180) are actuated by the rotation of the housing assembly relative to the distributor (60) that also results in detachment of the housing assembly from the distributor (60).
Sixth, the amount of torque required by the user to rotate the housing assembly relative to the distributor (60) using the bayonet-style mount may be considerably less than the torque required to unscrew a housing that is screwed onto a distributor with brute force to create a water-tight seal.
The amount of torque required to screw the housing assembly onto the distributor (60) may be within the range that can be applied by hand of a typical user without the assistance of any tool. Seventh, upon removing the housing assembly from the distributor (60), the housing lid (22) remains attached to the housing canister (20) to reduce the risk of spillage of any water contained in the housing canister (20).
[0056] Interpretation. References in the specification to "one embodiment", "an embodiment", etc., indicate that the embodiment described may include a particular aspect, feature, structure, or characteristic, but not every embodiment necessarily includes that aspect, feature, structure, or characteristic. Moreover, such phrases may, but do not necessarily, refer to the same embodiment referred to in other portions of the specification.
Further, when a particular aspect, feature, structure, or characteristic is described in connection with an embodiment, it is within the knowledge of one skilled in the art to affect or connect such module, aspect, feature, structure, or characteristic with other embodiments, whether or not explicitly described. In other words, any module, element or feature may be combined with any other element or feature in different embodiments, unless there is an obvious or inherent incompatibility, or it is specifically excluded.
[0057] It is further noted that the claims may be drafted to exclude any optional element.
As such, this statement is intended to serve as antecedent basis for the use of exclusive terminology, such as "solely," "only," and the like, in connection with the recitation of claim elements or use of a "negative" limitation. The terms "preferably,"
"preferred,"
"prefer," "optionally," "may," and similar terms are used to indicate that an item, condition or step being referred to is an optional (not required) feature of the invention.
[0058] The singular forms "a," "an," and "the" include the plural reference unless the context clearly dictates otherwise. The term "and/or" means any one of the items, any combination of the items, or all of the items with which this term is associated. The phrase "one or more" is readily understood by one of skill in the art, particularly when read in context of its usage.
[0059] The term "about" can refer to a variation of 5%, + 10%, 20%, or +
25% of the value specified. For example, "about 50" percent can in some embodiments carry a .. variation from 45 to 55 percent. For integer ranges, the term "about" can include one or two integers greater than and/or less than a recited integer at each end of the range. Unless indicated otherwise herein, the term "about" is intended to include values and ranges proximate to the recited range that are equivalent in terms of the functionality of the composition, or the embodiment.
.. [0060] As will be understood by one skilled in the art, for any and all purposes, particularly in terms of providing a written description, all ranges recited herein also encompass any and all possible sub-ranges and combinations of sub-ranges thereof, as well as the individual values making up the range, particularly integer values. A recited range includes each specific value, integer, decimal, or identity within the range. Any listed range can be easily recognized as sufficiently describing and enabling the same range being broken down into at least equal halves, thirds, quarters, fifths, or tenths. As a non-limiting example, each range discussed herein can be readily broken down into a lower third, middle third and upper third, etc.
[0061] As will also be understood by one skilled in the art, all language such as "up to", "at least", "greater than", "less than", "more than", "or more", and the like, include the number recited and such terms refer to ranges that can be subsequently broken down into sub-ranges as discussed above. In the same manner, all ratios recited herein also include all sub-ratios falling within the broader ratio.
[00481 In the embodiment shown in Figure 10, the apparatus (10) also includes three identical fasteners (140a, 140b, 140c). Each of the fasteners has a pair of opposed clip members (142). Each of the fasteners (140a, 140b, 140c) also has a tab (144) with a pair of tab members. In one embodiment, the fasteners (140a, 140b, 140c) may be made from propylene copolymer or other materials, allowing the clip members to be resiliently separated from each other, and allowing the tab members to be resiliently compressed towards each other.
[0049] In the embodiment shown in Figure 10, a first fastener (140a) is used to removably secure the inlet fitting (80) in the distributor inlet (62). After the inlet fitting (80) is inserted into the distributor inlet (62), the fastener (140a) is pushed so that the clip members (142a) are forced through passages (146a) defined by the distributor (60), and the tab (144a) is pushed into a slot (148a) defined by the distributor (60), whereupon the tab members are compressed by the slot (148a) to better secure the fastener (140a) to the distributor (60).
The passages (146a) defined by the distributor (60) allow the clip members of the fastener (140a) to contact and clamp against the inlet fitting (80), and thereby removably secure the inlet fitting (80) within the distributor inlet (62). In order to remove the inlet fitting (80) from the distributor inlet (62), the fastener (140a) is simply pulled so that the clip members (142a) are withdrawn from the passages (146a) and the tab (144a) is withdrawn from the slot (148a). A second fastener (140b) is used in an analogous manner to removably secure the outlet fitting (100) in the distributor outlet (64).
[0050] In the embodiment shown in Figure 10, the apparatus (10) also includes a bracket (120) for mounting the apparatus (10) to a structure (e.g., an inner wall of a cabinet under a sink). An upper portion defines a pair of bracket apertures (122).
[0051] In the embodiment of Figure 10, a third fastener (140c) is used to removably secure the bracket (120) to distributor (60). When the bracket (120) is inserted in a groove (150) defined by the upper surface of the distributor (60), the bracket apertures (122) are aligned with the passages (146c) defined by the distributor (60). The edges of the groove (150) define channels (152) that receive the edges (124) of the bracket (120) to retain the bracket (120) to the distributor (60). The fastener (140c) may then be pushed so that the clip members (142c) are forced through passages (146c) defined by the distributor (60) and the bracket apertures (122), and the tab (144c) is pushed into a slot (148c) defined by the distributor (60), whereupon the tab members are compressed by the slot (148c) to better secure the fastener to the distributor (60). The passages (146c) defined by the distributor (60) allow the clip members (142c) of the fastener (140c) to contact and clamp against the inner walls of the bracket (120) that define the bracket apertures (122), and thereby removably secure the bracket (120) to the distributor (60). In order to remove the bracket (120) from the distributor (60), the fastener (140c) is simply pulled so that the clip members (142c) are withdrawn from the passages (146c) and bracket apertures (122), and the tab (144c) is withdrawn from the slot (148c).
[0052] Use and operation. In an exemplary use of the embodiment of the apparatus (10) shown in Figure 11, two apparatuses (10a, 10b) may be connected together in a two-stage water filtration system. In other embodiments, a single apparatus (10) may be used in a single-stage system, or additional apparatuses (10) may be connected for a greater number of stages. As non-limiting examples, the system may be a point-of-use system beneath a sink to filter water for a single faucet, or as a larger point-of-entry or "whole home" system in a basement or a utility room to filter water for a plumbing network. In the embodiment shown in Figure 11, the inlet fitting (80) of the first apparatus (10a) and the outlet fitting (100) of the second apparatus (10b) are connected to an inflow line and an outflow line, respectively, of the plumbing network (not shown). A fitting directly connects the distributor outlet (64) of the first apparatus (10a) to the distributor inlet (62) of the second apparatus (10b).
[0053] Referring to the embodiment shown in Figure 11, when two of the apparatuses (10a, 10b) are placed side-by-side, with their distributors (60) abutting each other, the two distributors (60) collectively define a groove (154) that has dimensions that are the same as the groove (150) defined by a single one of the distributors (60) as shown in Figure 10.
Accordingly, as shown in Figure 12, a single bracket (120) may be inserted into the groove (154) and secured to both distributors (60) with a fastener (140) and used to mount both apparatuses (10a, 10b) to a structure, as an alternative to attaching one bracket (120) to each distributor (60) as shown in Figure 11.
[0054] When a filter cartridge in one of the apparatuses (10) requires replacement, the user rotates the housing assembly relative to the distributor (60) of that apparatus (10) so that the arrow marking (38) on the housing lid (22) moves from the closed padlock icon marking (39a) labelled "FLOW ON" on the distributor (60) to the open padlock icon marking (39c) on the distributor (60). When doing so, the housing lid (22) engages the shut-off valve (160) and moves it from the open position to the closed position, thereby isolating the apparatus (10) from its connected inflow and outflow lines.
Also, the bottom surface of the distributor (60) engages pressure-relief valve (180) to move it from the closed position to the open position to relieve any gas trapped in the housing.
[0055] In comparison with a conventional water filtration system, embodiments of the apparatus (10) of the present invention may be advantageous in the follow respects. First, no tools, or specialized skill is needed to connect the apparatuses (10) together, to the inflow and outflow line, or to the bracket (120). Rather, such connections may be made entirely by hand with the use of the provided fasteners (140). Second, on account of their modular nature, one of the apparatuses (10) may be conveniently removed from the system for servicing, or additional apparatuses (10) may be readily added to the system to increase the number of filtration stages. Third, the modular nature of the apparatuses (10) simplifies manufacturing and inventory management of the apparatus (10) for manufacturers and vendors of the apparatus (10). Fourth, no isolation valves need to be installed on the inflow and outflow lines, since each of the apparatuses (10) is equipped with its own internal shut-off valve (160). Fifth, there is no need for the user to undertake separate steps of closing valves on the inflow and outflow lines prior to removing the housing assembly from the distributor (60). This is because the shut-off valve (160) and the pressure-relief valve (180) are actuated by the rotation of the housing assembly relative to the distributor (60) that also results in detachment of the housing assembly from the distributor (60).
Sixth, the amount of torque required by the user to rotate the housing assembly relative to the distributor (60) using the bayonet-style mount may be considerably less than the torque required to unscrew a housing that is screwed onto a distributor with brute force to create a water-tight seal.
The amount of torque required to screw the housing assembly onto the distributor (60) may be within the range that can be applied by hand of a typical user without the assistance of any tool. Seventh, upon removing the housing assembly from the distributor (60), the housing lid (22) remains attached to the housing canister (20) to reduce the risk of spillage of any water contained in the housing canister (20).
[0056] Interpretation. References in the specification to "one embodiment", "an embodiment", etc., indicate that the embodiment described may include a particular aspect, feature, structure, or characteristic, but not every embodiment necessarily includes that aspect, feature, structure, or characteristic. Moreover, such phrases may, but do not necessarily, refer to the same embodiment referred to in other portions of the specification.
Further, when a particular aspect, feature, structure, or characteristic is described in connection with an embodiment, it is within the knowledge of one skilled in the art to affect or connect such module, aspect, feature, structure, or characteristic with other embodiments, whether or not explicitly described. In other words, any module, element or feature may be combined with any other element or feature in different embodiments, unless there is an obvious or inherent incompatibility, or it is specifically excluded.
[0057] It is further noted that the claims may be drafted to exclude any optional element.
As such, this statement is intended to serve as antecedent basis for the use of exclusive terminology, such as "solely," "only," and the like, in connection with the recitation of claim elements or use of a "negative" limitation. The terms "preferably,"
"preferred,"
"prefer," "optionally," "may," and similar terms are used to indicate that an item, condition or step being referred to is an optional (not required) feature of the invention.
[0058] The singular forms "a," "an," and "the" include the plural reference unless the context clearly dictates otherwise. The term "and/or" means any one of the items, any combination of the items, or all of the items with which this term is associated. The phrase "one or more" is readily understood by one of skill in the art, particularly when read in context of its usage.
[0059] The term "about" can refer to a variation of 5%, + 10%, 20%, or +
25% of the value specified. For example, "about 50" percent can in some embodiments carry a .. variation from 45 to 55 percent. For integer ranges, the term "about" can include one or two integers greater than and/or less than a recited integer at each end of the range. Unless indicated otherwise herein, the term "about" is intended to include values and ranges proximate to the recited range that are equivalent in terms of the functionality of the composition, or the embodiment.
.. [0060] As will be understood by one skilled in the art, for any and all purposes, particularly in terms of providing a written description, all ranges recited herein also encompass any and all possible sub-ranges and combinations of sub-ranges thereof, as well as the individual values making up the range, particularly integer values. A recited range includes each specific value, integer, decimal, or identity within the range. Any listed range can be easily recognized as sufficiently describing and enabling the same range being broken down into at least equal halves, thirds, quarters, fifths, or tenths. As a non-limiting example, each range discussed herein can be readily broken down into a lower third, middle third and upper third, etc.
[0061] As will also be understood by one skilled in the art, all language such as "up to", "at least", "greater than", "less than", "more than", "or more", and the like, include the number recited and such terms refer to ranges that can be subsequently broken down into sub-ranges as discussed above. In the same manner, all ratios recited herein also include all sub-ratios falling within the broader ratio.
Claims (18)
1. An apparatus for filtering water, the apparatus comprising:
(a) a housing assembly comprising a housing canister defining a housing interior for holding a filtration medium;
(b) a distributor assembly defining at least part of an inflow passage for directing water flow from a distributor inlet to the housing interior, and at least part of an outflow passage for directing water flow from the housing interior to a distributor outlet; and (c) a shut-off valve rotatable relative to the distributor assembly and being used for regulating water flow between the housing interior and the distributor inlet, and the distributor outlet, the shut-off valve being rotatable between an open position and a closed position relative to the distributor assembly, wherein the housing assembly is removably attachable to the distributor by rotation relative to the distributor in a first direction, where rotation of the housing assembly in the first direction actuates rotational movement of the shut-off valve to the open position permitting water flow through the inflow passage, and through the outflow passage, and wherein the housing assembly is detachable from the distributor by rotation relative to the distributor in a second direction opposite to the first direction, where rotation of the housing assembly in the second direction actuates rotational movement of the shut-off valve to the closed position preventing water flow through the inflow passage, and through the outflow passage.
(a) a housing assembly comprising a housing canister defining a housing interior for holding a filtration medium;
(b) a distributor assembly defining at least part of an inflow passage for directing water flow from a distributor inlet to the housing interior, and at least part of an outflow passage for directing water flow from the housing interior to a distributor outlet; and (c) a shut-off valve rotatable relative to the distributor assembly and being used for regulating water flow between the housing interior and the distributor inlet, and the distributor outlet, the shut-off valve being rotatable between an open position and a closed position relative to the distributor assembly, wherein the housing assembly is removably attachable to the distributor by rotation relative to the distributor in a first direction, where rotation of the housing assembly in the first direction actuates rotational movement of the shut-off valve to the open position permitting water flow through the inflow passage, and through the outflow passage, and wherein the housing assembly is detachable from the distributor by rotation relative to the distributor in a second direction opposite to the first direction, where rotation of the housing assembly in the second direction actuates rotational movement of the shut-off valve to the closed position preventing water flow through the inflow passage, and through the outflow passage.
2. The apparatus of claim 1, wherein the housing assembly comprises a housing lid removably attachable, in sealing relationship, to the housing canister, wherein the housing lid defines a housing lid aperture permitting water flow between the housing interior and the distributor.
3. The apparatus of claim 2, wherein the housing lid engages the shut off valve to actuate movement of the shut-off valve between the open position and the closed position.
4. The apparatus of claim 2:
Date Recue/Date Received 2023-09-19 (a) wherein the housing lid comprises a pressure relief valve for relieving pressure from the housing interior, wherein the pressure relief valve is translatable between a closed valve position and an open valve position;
(b) wherein rotation of the housing assembly relative to distributor in the first direction further actuates movement of the pressure-relief valve to the closed valve position, thereby preventing gas flow out of the housing interior; and (c) wherein rotation of the housing assembly relative to distributor in the second direction further actuates movement of the pressure-relief valve to the open valve position, thereby permitting gas flow out of the housing interior.
Date Recue/Date Received 2023-09-19 (a) wherein the housing lid comprises a pressure relief valve for relieving pressure from the housing interior, wherein the pressure relief valve is translatable between a closed valve position and an open valve position;
(b) wherein rotation of the housing assembly relative to distributor in the first direction further actuates movement of the pressure-relief valve to the closed valve position, thereby preventing gas flow out of the housing interior; and (c) wherein rotation of the housing assembly relative to distributor in the second direction further actuates movement of the pressure-relief valve to the open valve position, thereby permitting gas flow out of the housing interior.
5. The apparatus of claim 4, wherein during rotation of the housing assembly relative to the distributor in the second direction, a bottom surface of the distributor actuates movement of the pressure-relief valve into the open valve position.
6. The apparatus of any one of claims 4 or 5, wherein the bottom surface is contoured to engage with the pressure-relief valve when the housing assembly is rotated relative to the distributor in the second direction.
7. The apparatus of any one of claims 4 to 6, wherein the pressure-relief valve is biased to the closed valve position.
8. The apparatus of any one of claims 1 to 7, wherein the shut-off valve is rotatably attached to the distributor assembly.
9. The apparatus of claim 8, wherein the shut-off valve is attached to the distributor assembly by a screw and nut assembly.
10. The apparatus of any one of claims 1 to 9, wherein the shut-off valve is nested inside the distributor assembly.
11. The apparatus of any one of claims 1 to 10, wherein the shut-off valve comprises a first aperture and a second aperture.
12. The apparatus of claim 11, wherein the first and second apertures are formed in one or more walls defining the shut-off valve.
Date Reçue/Date Received 2023-09-19
Date Reçue/Date Received 2023-09-19
13. The apparatus of any one of claims 11 or 12, wherein in the open position, the first aperture is aligned with the distributor inlet to form part of the inflow passage, and the second aperture is aligned with the distributor outlet to form part of the outflow passage.
14. The apparatus of any one of claims 11 to 13, wherein in the closed position, at least one of the first and second apertures is misaligned with respect to one of the distributor inlet and the distributor outlet to isolate the inflow passage from the outflow passage.
15. The apparatus of any one of claims 11 to 14, wherein the first and second apertures are spaced apart by 180 .
16. The apparatus of any one of claims 1 to 15, wherein the distributor inlet and the distributor outlet are spaced apart by 1800 .
17. The apparatus of any one of claims 1 to 16, wherein the shut-off valve rotates in unison with the housing assembly when the housing assembly is rotated in either the first or second direction.
18. The apparatus of any one of claims 1 to 17, wherein the housing assembly is only detachable when the shut-off valve is in the closed position.
Date Recue/Date Received 2023-09-19
Date Recue/Date Received 2023-09-19
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA3236584A CA3236584A1 (en) | 2018-03-26 | 2018-03-26 | Water filtration apparatus with improved filter cartridge housing and distributor |
| CA2999315A CA2999315C (en) | 2018-03-26 | 2018-03-26 | Water filtration apparatus with improved filter cartridge housing and distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2999315A CA2999315C (en) | 2018-03-26 | 2018-03-26 | Water filtration apparatus with improved filter cartridge housing and distributor |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3236584A Division CA3236584A1 (en) | 2018-03-26 | 2018-03-26 | Water filtration apparatus with improved filter cartridge housing and distributor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2999315A1 CA2999315A1 (en) | 2019-09-26 |
| CA2999315C true CA2999315C (en) | 2024-06-04 |
Family
ID=68057863
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3236584A Pending CA3236584A1 (en) | 2018-03-26 | 2018-03-26 | Water filtration apparatus with improved filter cartridge housing and distributor |
| CA2999315A Active CA2999315C (en) | 2018-03-26 | 2018-03-26 | Water filtration apparatus with improved filter cartridge housing and distributor |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3236584A Pending CA3236584A1 (en) | 2018-03-26 | 2018-03-26 | Water filtration apparatus with improved filter cartridge housing and distributor |
Country Status (1)
| Country | Link |
|---|---|
| CA (2) | CA3236584A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11123667B2 (en) | 2018-06-11 | 2021-09-21 | Bhrs Group | Water cooler filter with secure bayonet-type connection |
-
2018
- 2018-03-26 CA CA3236584A patent/CA3236584A1/en active Pending
- 2018-03-26 CA CA2999315A patent/CA2999315C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CA3236584A1 (en) | 2019-09-26 |
| CA2999315A1 (en) | 2019-09-26 |
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