US20050167352A1 - Filter cartridge and manifold for a water purification system - Google Patents
Filter cartridge and manifold for a water purification system Download PDFInfo
- Publication number
- US20050167352A1 US20050167352A1 US11/042,975 US4297505A US2005167352A1 US 20050167352 A1 US20050167352 A1 US 20050167352A1 US 4297505 A US4297505 A US 4297505A US 2005167352 A1 US2005167352 A1 US 2005167352A1
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- Prior art keywords
- manifold
- filter cartridge
- inlet
- cam
- cap
- Prior art date
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- Abandoned
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 139
- 238000000746 purification Methods 0.000 title claims abstract description 21
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 238000010276 construction Methods 0.000 claims description 4
- 210000002445 nipple Anatomy 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 7
- 238000000926 separation method Methods 0.000 abstract description 6
- 238000011144 upstream manufacturing Methods 0.000 description 21
- 239000008213 purified water Substances 0.000 description 7
- 238000001914 filtration Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 239000002991 molded plastic Substances 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000011403 purification operation Methods 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Images
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
- B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
- B01D35/153—Anti-leakage or anti-return 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
- B01D35/30—Filter housing constructions
- B01D35/301—Constructions of two or more housings
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
- C02F9/20—Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems
-
- 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
-
- 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
- B01D2201/4023—Means for connecting filter housings to supports
-
- 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
- B01D2201/4046—Means for avoiding false mounting of different parts
-
- 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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/006—Cartridges
Definitions
- This invention relates generally to water purification systems of the type having one or more filter elements for producing a supply of filtered or relatively purified water, wherein the filter elements are supported by a filter manifold for relatively quick and easy removal and replacement. More particularly, this invention relates to an improved water purification system wherein each filter cartridge is adapted for removal and replacement in a substantially fail-safe manner, with little or no risk of undesired water spillage in the course of filter cartridge changeover, or from a removed filter cartridge.
- Water purification systems are generally well known in the art for producing a relatively purified water supply used for drinking, cooking, etc.
- Such purification systems commonly employ one or more filter elements connected to an incoming water supply such as a standard tap water inflow.
- the filter elements appropriately filter or otherwise purify the water inflow to produce a relatively purified water supply which may be coupled directly to a faucet valve or the like for immediate dispensing, or otherwise coupled to a reservoir where it is stored pending dispensing demand.
- the purification system comprises a plurality of filter elements including particulate filtration, carbon filtration, and a reverse osmosis (RO) membrane supported on or in a manifold constructed for suitably connecting each filter element to mating flow couplers for normal purification operation, while additionally accommodating relatively quick and easy removal and replacement of each filter element.
- RO reverse osmosis
- the present invention is directed to further improvements in and to a combined replaceable filter cartridge and manifold, wherein the filter cartridge is adapted for quick and easy, substantially fail-safe removal from and installation onto the manifold, and further wherein such filter cartridge removal and replacement occurs substantially in the absence of water spillage from the manifold or from a removed filter cartridge.
- a combined filter cartridge and manifold are provided for use in a water purification system or the like, to facilitate substantially fail-safe and substantially drip-free filter cartridge removal and replacement.
- the manifold is coupled to a suitable water supply and includes inlet and outlet fittings for quick and easy respective connection with water inlet and outlet ports on the filter cartridge.
- a pivotal manifold cap is mounted on the manifold for pivoting movement between a normal closed or lowered position overlying and retaining the filter cartridge in proper connected relation with the manifold fittings and the water supply, and an open or raised position for disconnection of the water supply before permitting filter cartridge separation from the manifold.
- Check valves at the cartridge inlet and outlet ports prevent water leakage from the removed cartridge.
- the manifold cap Upon installation of a replacement filter cartridge, the manifold cap is returned to the initial closed position, with cooperating cam elements on the manifold cap and filter cartridge drawing the cartridge inlet/outlet ports into secure connection with the manifold inlet/outlet fittings before reconnection with the water supply.
- the manifold includes a support bracket adapted for wall mounting at an under-counter location or the like, and including a pair of bracket arms for seated support of a pair of cam pins projecting outwardly from opposed sides of the filter cartridge. Positioning of a filter cartridge with said cam pins supported on the bracket arms orients the cartridge inlet/outlet ports in alignment with the manifold inlet/outlet fittings for correct, substantially fail-safe flow coupling therewith.
- the cartridge inlet/outlet check valves are adapted to open upon connection with the manifold inlet/outlet fittings, and to close upon separation therefrom. When the manifold cap is in the raised or open position, the support bracket is sufficiently exposed for filter cartridge removal and replacement relative to the bracket arms.
- a cam track defined by the manifold cap engages the cartridge cam pins to carry the cartridge inlet/outlet ports into proper and secure flow-coupled connection with manifold inlet/outlet fittings, followed by opening connection with the water supply.
- the manifold cap In this lowered or closed position, the manifold cap overlies at least the portion of the filter cartridge including the inlet/outlet ports and the associated manifold inlet/outlet fittings to positively block and prevent filter cartridge removal from the manifold.
- the manifold cap is shifted upwardly to its raised or open position. Such displacement of the manifold cap initially shuts off the water supply connected to the manifold. Further manifold cap displacement sufficiently exposes the filter cartridge for manual removal or separation from the manifold.
- the cooperating cam elements on the pivotal manifold cap and filter cartridge accommodate swinging movement of the filter cartridge with the pivotally mounted manifold cap between an inoperative position with the cartridge extending generally downwardly and angularly outwardly from the support bracket, and an operative position with the cartridge suspended generally vertically from the support bracket.
- the water supply valve is disconnected from the filter cartridge which can be disassembled from or a replacement filter cartridge can be assembled with the manifold inlet/outlet fittings.
- the cam elements By holding the filter cartridge in the inoperative position with the inlet/outlet ports properly engaged with the manifold inlet/outlet fittings, the cam elements accommodate swinging movement of the filter cartridge held manually swung toward the operative position to reconnect the water supply and releasibly lock the filter cartridge in place.
- FIG. 1 is a schematic diagram illustrating a combined filter cartridge and manifold in a water purification system
- FIG. 2 is an enlarged and fragmented front perspective view of a portion of the filter cartridge and manifold of FIG. 1 , depicting a pivotally mounted manifold cap in a closed or lowered position supporting and retaining a filter cartridge in a normal operating position for filtering water;
- FIG. 3 is an enlarged and fragmented front perspective view corresponding generally with FIG. 2 , but showing the manifold cap is an open or raised position permitting filter cartridge removal and replacement;
- FIG. 4 is an enlarged horizontal sectional view taken generally on the line 4 - 4 of FIG. 2 ;
- FIG. 5 is an exploded perspective view showing the manifold cap and associated manifold components
- FIG. 6 is an exploded perspective view illustrating the manifold cap and a support bracket in exploded relation with a filter cartridge
- FIG. 7 is a fragmented side elevation view taken generally on the line 7 - 7 of FIG. 3 , and illustrating the manifold cap in the open or raised position;
- FIG. 8 is a fragmented side elevation view similar to FIG. 7 , but showing the manifold cap in a partially raised position approximately mid-way between the open and closed positions;
- FIG. 9 is a fragmented side elevation view similar to FIGS. 7 and 8 , taken generally on the line 9 - 9 of FIG. 2 , and showing the manifold cap in the closed or lowered position;
- FIG. 10 is a fragmented front perspective view similar to FIG. 2 , but depicting an alternative preferred form of the invention with a pivotally mounted manifold cap in a closed or lowered position supporting and retaining a filter cartridge in a normal operating position for filtering water;
- FIG. 11 is a fragmented front perspective view similar to FIG. 10 , and showing the manifold cap in an open or raised position permitting filter cartridge removal and replacement;
- FIG. 12 is an exploded perspective view showing the manifold and filter cartridge components corresponding with the embodiment depicted in FIGS. 10-11 ;
- FIG. 13 is an enlarged horizontal sectional view taken generally on the line 13 - 13 of FIG. 10 ;
- FIG. 14 is an exploded perspective view illustrating manifold and filter cartridge components in accordance with another alternative preferred form of the invention.
- FIG. 15 is a side elevation view illustrating initial engagement of the filter cartridge of FIG. 14 with the manifold;
- FIG. 16 is an enlarged fragmented vertical sectional view illustrating initial engagement of the filter cartridge of FIGS. 14-15 with the manifold;
- FIG. 17 is a side elevation view similar to FIG. 15 , but showing further engagement of the filter cartridge with the manifold;
- FIG. 18 is a side elevation view similar to FIGS. 15 and 17 , but depicting final engagement of the filter cartridge with the manifold;
- FIG. 19 is an enlarged fragmented vertical sectional view illustrating final engagement of the filter cartridge of FIG. 18 with the manifold.
- a combined filter cartridge and manifold system referred to generally in FIG. 1 by the reference numeral 10 is provided for providing relatively purified water for dispensing by means of a faucet 11 or the like including (as shown) a suitable faucet valve 12 for regulating dispense water flow through a faucet spout 13 or the like.
- the cartridge and manifold system 10 includes a manifold 14 having a pivotally movable manifold cap 15 for normally retaining and supporting a removable filter cartridge 16 to produce purified water for dispensing, as viewed in FIGS. 2 and 9 .
- the manifold cap 15 can be raised from a normally closed position ( FIGS. 2 and 9 ) to an open position ( FIGS.
- the manifold 14 and the filter cartridge 16 includes one-way check valves which close upon cartridge removal from the manifold 14 , whereby the filter cartridge 16 can be removed and replaced in a substantially drip-free manner.
- FIG. 1 depicts the combined filter cartridge and manifold system 10 mounted in-line along the length of a water supply conduit or tube 19 having an upstream segment coupled to a suitable water supply 20 , such as a conventional tap water source or supply, and a downstream segment coupled in flow communication with the faucet 11 for water dispensing.
- a suitable water supply 20 such as a conventional tap water source or supply
- a single filter cartridge 16 is shown supported by the manifold 14 , wherein this filter cartridge 16 may include a suitable filtration medium or media (not shown) for removing particulate and/or undesired potentially toxic liquid agents from the water flow stream.
- a suitable filtration medium or media not shown
- Persons skilled in the art will recognize and appreciate that multiple filter cartridges may be used in a common manifold arrangement, with supporting manifold structure being adapted for water flow in series through such multiple filter cartridges.
- the manifold 14 further comprises a manifold support bracket 22 formed from lightweight molded plastic or the like and having a rear bracket plate 23 (shown best in FIG. 6 ) adapted for convenient mounting onto a selected wall or other substrate (not shown) as by means of a suitable adhesive layer carried on a rear face thereof.
- Alternative fastening means such as one or more screws (not shown) may also be used for rearward fastening through screw ports 24 formed in the plate 23 .
- a pair of laterally spaced-apart bracket arms 25 project outwardly or forwardly from a front side of the bracket plate 23 .
- bracket arms 25 define an upwardly presented pair of cam rails, the outboard or distal ends of which include relatively short up-turned stops 27 .
- cam rails 26 defined by the spaced-apart bracket arms 25 , are oriented generally in parallel with each other for slidably supporting a pair of cam lugs or pins 28 projecting laterally outwardly from opposite sides of a header 30 mounted on the upper end of each filter cartridge 16 , as will be described herein in more detail.
- the manifold 14 further includes a valve body 32 adapted for in-line mounting along the length of the water supply flow conduit or tube 19 .
- This valve body 32 ( FIG. 5 ) comprises a tubular structure which may also be formed from a lightweight molded plastic or the like and includes a downwardly protruding bracket card 33 having a size and shape for relatively close-fit sliding reception into an upwardly open rear pocket 34 ( FIG. 6 ) defined by a forwardly offset central segment of the wall-mounted manifold bracket plate 23 .
- a pair of forwardly projecting guide flanges 35 on the bracket card 33 conveniently slide-fit into upwardly open slots 36 in the bracket plate 23 for securely retaining these components in assembled relation, while permitting upward slide-out removal of the valve body 32 from the bracket plate 23 , when and if desired.
- the valve body 32 When mounted onto the rear bracket plate 23 , the valve body 32 is oriented to extend generally horizontally or laterally across a front side of the bracket plate 23 .
- the valve body 32 includes a pair of forwardly protruding tubular fittings comprising an inlet fitting 37 and an outlet fitting 38 ( FIG. 5 ) adapted for respective slide-fit coupling with a tubular inlet port 39 and outlet port 40 ( FIG. 6 ) on the head 30 of the removable filter cartridge 16 .
- FIGS. 4-5 illustrate the inlet and outlet fittings 37 , 38 projecting radially outwardly or forwardly and in spaced-apart, generally parallel relation on the valve body 32 . As viewed best in FIG.
- the inlet fitting 37 is adapted for connection via an inlet bore 41 in the valve body 32 to the incoming water flow from the water supply 20
- the outlet fitting 38 is adapted for connection via an outlet bore 42 in the valve body 32 to the faucet 11 or the like.
- the valve body 32 carries the water supply valve 18 generally at an upstream end of the inlet bore 41 for appropriate on-off movement for respectively permitting and preventing water flow into and through the manifold 14 and associated filter cartridge 16 mounted thereon. More particularly, as shown best in FIG. 5 , the illustrative water supply valve 18 comprises a tubular valve member 44 having an insert segment 45 with an external or male thread 46 formed thereon for part-turn thread-in engagement with a mating internal or female thread 47 formed within the inlet bore 41 at the upstream end thereof. An outboard head segment 48 ( FIG.
- valve member 44 includes one or more axially elongated external drive keys 49 protruding radially outwardly therefrom for axial slide-fit reception into a cylindrical drive hub 50 on the manifold cap 15 , wherein this drive hub 50 has matingly shaped internal slotted keyways 51 formed therein.
- the tubular valve member 44 has a check valve assembly mounted therein, including a resilient valve head 52 mounted therein for engaging and closing an annular valve seat 53 to prevent water inflow from the water supply 20 through the manifold inlet bore 41 to the manifold inlet fitting 37 , thereby preventing water flow to and through the filter cartridge 16 when connected with the manifold 14 .
- rotation of the manifold cap 15 in one direction rotatably displaces the valve member 44 to a closed position with the valve seat 53 axially advanced into seated engagement with an upstream surface of the valve head 52 .
- FIG. 4 illustrates the valve seat 53 in this axially retracted or open position, with water pressure at an upstream side of the water supply valve 18 functioning to urge and retain the valve head 52 against a stop pin 54 which protrudes axially in an upstream direction within the inlet bore 41 .
- the water supply tube or conduit 19 is conveniently coupled to the manifold 14 by means of a pair of collet-style couplers 55 , one of which is mounted at an upstream end of the tubular valve member 44 , in association with an axially-downstream adjacent pair of O-ring seals 56 .
- a second one of the collet-style couplers 55 is mounted at a downstream end of the outlet bore 42 formed in the valve body 32 , in association with an axially-upstream adjacent pair of O-ring seals 56 .
- These collet-style couplers 55 are designed for quick and easy push-in or slide-fit gripped reception and retention of the associated end of the water supply tube 19 , particularly in the case where this supply tube 19 comprises a length of plastic tubing.
- the manifold cap 15 includes the internally slotted drive hub 50 which is slidably fitted over and rotatably displaces the externally keyed head segment 48 of the tubular valve member 44 .
- this drive hub 50 protrudes outwardly from one side of a depending cap side wall 57 which is joined in turn with a top wall 58 , thereby providing the manifold cap 15 with a downwardly open or inverted, generally cup-shaped configuration.
- An aperture 59 is also formed in the cap side wall 57 (shown best in FIG. 3 ) opposite the drive hub 50 , whereby the manifold cap can be pivotally shifted between a lowered position ( FIG. 2 ) and a raised position ( FIG.
- Such pivoting movement of the manifold cap 15 is effective to rotatably shift the water supply valve 18 between an open position when the cap 15 is in the lowered position ( FIG. 2 ) extending generally over to cover and conceal the inlet and outlet fittings 37 , 38 on the manifold valve body 32 , and a closed position when the cap 15 is in the raised position ( FIG. 3 ) exposing the inlet and outlet fittings 37 , 38 to access.
- the manifold 14 and the filter cartridge 16 both include one-way check valves which close upon cartridge removal from the manifold 14 , whereby the filter cartridge 16 can be removed and replaced in a substantially drip-free manner.
- these check valves are opened to permit flow of water through the filter cartridge 16 for appropriate purification.
- the fittings 37 , 38 are properly coupled with the ports 39 , 40
- the water supply valve 18 is opened, water is permitted to flow from the water supply 20 and through the manifold inlet bore 41 and into the filter cartridge via the inlet port 39 .
- This water flow continues within the filter cartridge 16 in a known manner, in association with the purification media therein, and eventual exit flow via the outlet port 40 through the manifold outlet bore 42 to the faucet 11 or the like for dispensing.
- each of the inlet and outlet fittings 37 , 38 , and each of the inlet and outlet ports 38 , 39 is associated, in the illustrative preferred form of the invention, with a respective one of a plurality of these check valves, wherein each of these check valves generally includes a resilient valve head 60 positioned for movable displacement between open and closed positions relative to an associated annular valve seat 61 .
- the orientations of these check valves in the fittings 37 , 38 and ports 39 , 40 are selected for the desired one-way operation to permit water flow in one direction, but to prevent water back-flow in an opposite direction, in response to installation and removal of the filter cartridge 16 relative to the manifold 14 .
- a first manifold check valve 62 is positioned within the inlet fitting 37 and oriented for pressure-actuated movement to a normally closed position prevent water flow from the associated inlet bore 41 in a direction outwardly from said inlet fitting 37 .
- a second manifold check valve 64 is positioned within the outlet bore 42 in flow communication with the outlet fitting 38 , and is oriented for pressure-actuated movement relative to the associated valve seat 61 to permit water outflow from the outlet bore 42 toward the faucet 11 or the like, while preventing water back-flow therethrough.
- the associated first and second manifold check valves 62 , 64 positively prevent water outflow from either fitting 37 , 38 irrespective of the opened or closed position of the water supply valve 18 .
- a first cartridge check valve 66 is positioned within the inlet port 39 of the filter cartridge 16 and oriented for pressure-actuated movement to permit water inflow through the inlet port and into the interior of the filter cartridge. Conversely, this first cartridge check valve positively prevents water outflow from the filter cartridge through the inlet port 38 .
- a second cartridge check valve 68 is mounted within the outlet port 40 of the filter cartridge and is oriented for pressure-actuated movement for normally preventing water outflow through the outlet port 40 to the cartridge exterior. Accordingly, when the filter cartridge inlet and outlet ports 38 , 40 are not coupled with the manifold inlet and outlet fittings 37 , 38 , the associated first and second cartridge check valves 66 , 68 positively prevent water outflow from either port 39 , 40 . Thus, following removal of a used cartridge 16 from the manifold 14 as will be described further herein, the first and second cartridge check valves 66 , 68 positively prevent significant water leakage from the interior of the filter cartridge.
- water outflow from the filter cartridge 16 via the outlet port 40 is permitted.
- Such water outflow passes through the manifold outlet fitting 38 and the manifold outlet bore 42 for pressure-actuated opening of the second manifold check valve 64 . Accordingly, the water outflow may continue from the manifold outlet bore 42 through the water supply tubing 19 to the faucet valve 12 .
- a replacement filter cartridge 16 can be oriented with its inlet and outlet ports 39 , 40 for convenient slide-on engagement with the manifold inlet and outlet fittings 37 , 38 , followed by downward closure of the manifold cap 15 as viewed in FIGS. 2 and 9 . Such downward movement of the manifold cap 15 is accompanied by re-opening of the water supply valve 18 for resumed water flow through the filter cartridge.
- cam slotted tracks 72 formed on the mounting cap 15 at opposite inboard-positioned sides thereof.
- These slotted cam tracks have a generally matching arcuate or curved shape, and are appropriately sized and positioned to receive and guidingly engage the cam pins 28 projecting outwardly from opposite sides of the head 30 on the filter cartridge 16 as the manifold cap 15 is pivotally shifted between the lowered and raised positions shown respectively in FIGS. 2 and 3 .
- a replacement filter cartridge 16 is installed onto the manifold 14 by initially positioning the cartridge with the cam pins 28 resting upon the cam rails 26 defined by the pair of bracket arms 25 .
- the pair of cam pins 28 are generally and respectively positioned in slide-fit alignment with the pair cam tracks 72 on the manifold cap 15 .
- downward pivoting motion of the manifold cap causes the cam tracks 72 to engage and carry the cam pins 28 along the cam rails 30 to correspondingly carry the cartridge inlet and outlet ports 39 , 40 into correct slide-fitted and flow coupled engagement with the manifold inlet and outlet fittings 37 , 38 .
- FIG. 8 Such initial movement of the filter cartridge 16 into correct slide-on flow-coupled engagement with the manifold fittings 37 , 38 is depicted in FIG. 8 .
- the manifold cap 15 As the manifold cap 15 is further rotated downwardly toward the lowered position as viewed in FIGS. 2 and 9 , the cap 15 shifts the water supply valve 18 to the open position and the filter cartridge is thus rendered operational.
- the manifold cap 15 protectively overlies and substantially conceals the upper end of the filter cartridge 16 from access and view, while additionally wrapping relatively closely about a forward side of the filter cartridge to physically obstruct and prevent cartridge separation from the manifold.
- the water supply valve 18 is initially turned off followed by partial retraction of the cartridge inlet and outlet ports 39 , 40 from the manifold inlet and outlet fittings 37 , 38 as the cam pins 28 ride along the upwardly shifting cam tracks 72 on the manifold cap.
- the manifold cap 15 nears or reaches the elevated position shown in FIGS. 3 and 7 , the upper end of the filter cartridge 16 is sufficiently exposed for quick and easy slide-off separation from the manifold 14 , as previously described herein.
- FIGS. 10-13 One alternative preferred form of the invention is shown in FIGS. 10-13 , wherein components corresponding with those shown and described in FIGS. 1-9 are identified by common reference numeral, and further wherein modified components are identified common reference numerals increased by 100.
- the modified filter cartridge and manifold system or unit 110 shown in FIGS. 10-13 utilizes a modified water supply valve 118 that eliminates the need for separate manifold check valves such as the manifold check valves 62 , 64 employed as shown in FIGS. 4-5 .
- the modified system 110 depicted in FIGS. 10-13 includes a modified manifold valve body 132 adapted for slide-fit seated support upon the bracket plate 23 having the forwardly protruding bracket arms 25 as previously described.
- the bracket arms 25 define upwardly presented and generally parallel cam rails 26 for supported engagement by the pair of laterally opposed, outwardly projecting cam pins or lugs 28 on the head 30 of the removable filter cartridge 16 .
- the valve body 132 defines a pair of forwardly projecting inlet and outlet fittings 37 , 38 ( FIG. 12 ) for suitable slide-fit and flow-coupled engagement with a corresponding pair of inlet and outlet ports 39 , 40 on the valve cartridge head 30 .
- a manifold cap 15 is pivotally mounted relative to the valve body 132 between a lowered position ( FIG. 10 ) overlying and protectively concealing the manifold fittings 37 , 38 as well as the upper end of the filter cartridge 16 while positioning a modified water supply valve 118 in a open position for water flow to and through the filter cartridge for purification.
- the manifold cap 15 can be elevated to the raised position ( FIG. 11 ) for initially closing the water supply valve 124 and then exposing the upper end of the filter cartridge 16 for quick and easy slide-away removal and replacement.
- the modified valve body 132 has an upstream end protruding axially from an upstream side of the manifold cap 15 , wherein this upstream end extends into the cap interior to a stepped shoulder 74 ( FIGS. 12-13 ) whereat the valve body 132 expands in diametric size for the balance of the length thereof.
- This larger diameter segment of the valve body 132 is structurally connected to or formed integrally with the bracket card 33 for secure and stable support on the bracket plate 23 .
- a tubular valve member 144 of reduced diametric size is slidably fitted into the open end of this larger diameter segment of the valve body 132 .
- the tubular valve member includes a radially open inlet valve port 162 formed in axially spaced relation with a radially open outlet valve port 164 , with said valve ports 162 , 164 being spaced for respective alignment with the inlet and outlet fittings 37 , 38 on the valve body 132 .
- a radially stepped-down upstream end of the valve member 144 defines a radial shoulder for engaging an internal shoulder at an upstream end of the larger diameter segment of the valve body 132 , for normally aligning the valve ports 162 , 164 with the inlet and outlet fittings 37 , 38 .
- An upstream segment of the valve member 144 defines the inlet bore 41 for receiving water inflow from a source or supply, and then turns radially for flow communication with the inlet valve port 162 .
- a downstream segment of the valve member 144 defines the outlet bore with a radially turned end for flow communication with the outlet valve port 164 .
- a pair of O-ring seals 75 or the like are captured about the valve member 144 at positions axially opposed to the outlet valve port 164 .
- the downstream or outlet end of the tubular valve member 144 defines a shallow counterbore 76 ( FIGS. 12-13 ) for sealed slide-fit reception of an upstream end of the valve body 132 associated with a subsequent cartridge/manifold unit or system 110 ( FIG. 10 ) in succession.
- the upstream end of the valve body 132 which will typically carry an O-ring seal 77 ( FIGS. 12-13 ) or the like, is sized for slide-fit and sealed reception into the downstream end of a prior cartridge/manifold unit or system 110 in succession ( FIG. 10 ).
- a spring-loaded bayonet clip 78 is conveniently mounted on the mounting cap 15 for releasibly engaging a circumferential groove 79 formed near an upstream end of the adjacent valve body 132 , to releasibly lock the successive stages of a resultant multi-cartridge purification system in series relation.
- Such spring-loaded bayonet clips 78 are known in the art for tubing connections, as disclosed, for example, in more detail in U.S. Pat. No. 4,436,125 which is incorporated by reference herein.
- a spring 80 is desirably provided to react axially between an upstream end of the valve member 144 and another internal shoulder formed within the valve body 132 for axially biasing the valve member 144 toward a position with the valve ports 162 , 164 misaligned with the inlet and outlet fittings 37 , 38 , when the subsequent stage of the purification system is removed or disassembled from the valve member counterbore 76 .
- the valve member 144 is axially shifted against the spring 80 for aligning the valve ports 162 , 164 in the axial direction relative to the inlet and outlet fittings 37 , 38 .
- the tubular valve member 144 is rotatably shifted upon pivotal movement of the manifold cap 15 for moving the valve ports 162 , 164 between an open position aligned radially with the manifold inlet and outlet fittings 37 , 38 (as shown in FIG. 13 ), and a closed position with said valve ports 162 , 164 opening generally upwardly in misalignment with the fittings 37 , 38 . Accordingly, in the open position, water within the inlet bore 41 is in flow communication with the inlet fitting 37 via the inlet valve port 162 , for flow to the filter cartridge 16 through the inlet port 39 thereof.
- the actuator pin 69 FIG.
- the cartridge inlet port 38 may be omitted in the absence of the first manifold check valve 60 ( FIG. 4 ).
- water from the cartridge outlet port 40 is in flow communication with the manifold outlet fitting 38 for flow to the subsequent purification stage or unit 110 , and ultimately to a faucet valve or the like.
- the second manifold check valve 62 ( FIG. 4 ) may also be omitted.
- the mounting cap 15 is engaged by a radially protruding lug 82 on the valve member 144 , for rotatably displacing the valve member as the cap 15 is raised and lowered.
- the orientation of the valve member 144 and lug 82 relative to the cap 15 provides for alignment of the valve ports 162 , 164 with the inlet fittings 37 , 38 to place the water supply valve 124 in an open position when the cap is lowered over the valve body 132 and the filter cartridge coupled therewith ( FIG. 10 ).
- FIG. 10 As the cap 15 is raised ( FIG.
- the water supply valve 124 is initially closed by misalignment of the valve ports 162 , 164 with the inlet fittings 37 , 38 , followed by exposure of the upper end of the filter cartridge for removal and replacement in the same manner as previously described.
- the manifold cap 15 can be pivoted back down to the lowered position ( FIG. 10 )
- the inlet and outlet ports 39 , 40 are drawn by the cam tracks 76 engaging the cam pins 28 to draw the cartridge ports 39 , 40 into proper slide-fit and flow-coupled engagement with the manifold fittings 37 , 38 , in the same manner as previously described, followed by re-opening of the water supply valve 118 for resumed filter operation.
- removal and replacement of the filter cartridge 16 takes place in a substantially drip-free manner.
- FIGS. 14-19 A further alternative preferred form of the invention is shown in FIGS. 14-19 , wherein components corresponding with those shown and described in FIGS. 1-9 are again identified by common reference numerals, and further wherein modified components are identified common reference numerals increased by 200.
- the modified filter cartridge and manifold system or unit 210 shown in FIGS. 14-19 includes a modified filter cartridge 216 having a head 230 equipped with a pair of laterally opposed cam lugs or cam pins 28 , in combination with a pair of inlet and outlet ports 239 and 240 having the first and second cartridge check valves 66 and 68 installed therein.
- the first cartridge check valve 66 at the inlet port 239 includes an outwardly protruding actuator pin or probe 69 .
- the orientation of the cartridge inlet and outlet ports 239 , 240 is modified from the configuration shown and described in FIGS. 1-13 , in that the cartridge inlet and outlet ports 239 , 240 extend axially upwardly in parallel spaced relation from the cartridge head 230 .
- the cartridge inlet and outlet ports 239 , 240 are oriented for slide-fit, push-on coupling with a corresponding pair of inlet and outlet fittings 237 and 238 which protrude radially outwardly in parallel spaced relation from a tubular valve body 232 .
- this tubular valve body 232 conforms with the valve body 32 shown and described in the embodiment of FIGS. 1-9 , except that the separate water supply valve 18 and its rotary drive coupling with a manifold cap is omitted.
- the tubular valve body 232 does include a pair of collet-style couplers 55 including O-ring seals 56 at the upstream and downstream ends thereof for respective slide-in coupling with the adjacent ends of the water supply conduit or tube 19 (not shown in FIGS.
- An upstream end segment of the valve body 232 defines an inlet bore 41 for water supply flow communication with the radially out-turned inlet fitting 237 that has the first manifold check valve 62 mounted therein.
- a downstream segment of the valve body 232 defines the outlet bore 42 for coupling the outlet fitting 238 with the faucet or the like, with the second manifold check valve 64 mounted within said outlet bore 42 .
- An annular actuator nipple or stem 70 is formed at a distal end tip of the outlet fitting 238 .
- the tubular valve body 232 is movably mounted on a modified support bracket 222 for rotary movement with a modified manifold cap 215 as the filter cartridge 216 is installed or removed for replacement.
- This modified support bracket 222 is shown best in FIG. 14 to include rear bracket plate 223 having an upper pair of forwardly projecting bearing arms 90 defining a downwardly open pair of axially spaced and generally part-circle bearing seats 92 for rotatably receiving and engaging the tubular valve body 232 near the axially opposed ends thereof.
- the support bracket 222 further includes a lower pair of forwardly projecting bracket arms 225 defining a forwardly open pair of generally horizontally oriented cam slots or tracks 226 .
- valve body 232 is fitted against the downwardly open bearing seats 232 defined by the bearing arms 90 , and the modified mounting cap 215 is mounted over the valve body so that the axially opposed valve body ends protrude at least a short distance through openings 93 formed in the opposed side walls of the 257 of the cap.
- a central portion of the valve body 232 is nested upwardly against an internal bearing seat 94 ( FIG. 16 ) formed on the underside of the cap top wall 258 .
- An inner cap shell 96 is then assembled with the cap 215 as by means of a pair of screws 97 or the like fastened upwardly into the cap top wall 258 (shown best in FIG. 16 ), so that a part-circle bearing cradle 98 ( FIG.
- the manifold cap 215 is rotatably mounted on the support bracket 222 , and the tubular valve body 232 is carried by the manifold cap 215 for rotation therewith.
- the manifold cap 215 is rotatable generally about a central axis of the valve body 232 , whereby the valve body 232 is rotatable about the central axis thereof.
- the inner cap shell 96 carried by the manifold cap 215 additionally defines a downwardly open, generally oval-shaped passage 100 having the radially projecting manifold inlet and outlet fittings 237 , 238 positioned therein, and adapted further for slide-fit reception of the upwardly projecting inlet and outlet ports 239 , 240 on the filter cartridge 216 .
- the filter cartridge 216 can be oriented for slide-in reception of the inlet and outlet ports 239 , 240 into this passage 100 , for appropriate respective engagement with the manifold inlet and outlet fittings 237 , 238 .
- such slide-fit engagement of these inlet/outlet fittings 237 , 238 and ports 239 , 240 functions as previously described with respect to FIGS. 1-9 to permit water inflow to the cartridge 216 via the first manifold and first cartridge check valves 62 , 66 , and also to permit water outflow from the cartridge via the second cartridge and second manifold check valves 68 , 64 .
- the first and second manifold check valves 62 , 64 prevent water outflow from the manifold fittings 237 , 238
- the first and second cartridge check valves prevent water outflow from the cartridge ports 239 , 240 .
- Movement of the manifold cap 215 to this partially raised position shown in FIG. 15 also rotatably displaces the inner cap shell 96 for orienting the guide passage 100 formed therein for slide-in reception of the upwardly projecting inlet and outlet ports 239 , 240 on the filter cartridge 216 , concurrently with slide-fit reception of the cam pins 28 into the cap cam tracks 272 .
- the inlet/outlet ports 239 , 240 on the filter cartridge 216 are properly aligned with the manifold inlet/outlet fittings 237 , 238 for slide-fit coupling therewith, as viewed in FIG. 16 . Subsequent push-in displacement of the filter cartridge 216 ( FIG.
- the filter cartridge 216 can then be pivotally displaced to swing a lower end thereof toward the bracket plate 222 (or the wall upon which the bracket plate is mounted) in the direction of arrow 102 in FIG. 18 , thereby displacing the cartridge cam pins 28 along the bracket cam tracks 226 .
- the bracket cam tracks 226 force the cartridge cam pins 28 in a direction causing the cartridge inlet/outlet ports 239 , 240 to be firmly and properly engaged in flow-coupled relation with the manifold inlet/outlet fittings 237 , 238 .
- the sets of check valves 62 , 64 and 66 , 68 open substantially simultaneously so that the filter cartridge 216 is installed substantially in a drip-free manner.
- the manifold cap 215 (which is pivotally rotated with the cartridge toward a substantially vertical position) is oriented with the cap cam tracks 272 in a substantially vertical orientation.
- the cartridge cam pins 28 are retained cooperatively by the substantially vertical cap cam tracks 272 and the substantially horizontal bracket cam tracks 226 , resulting is effective locked retention of the filter cartridge 216 in the upright, operational position as viewed in FIGS. 18-19 .
- Subsequent manual replacement of the filter cartridge 216 is performed by initially swinging the lower end of the cartridge outwardly from the bracket plate 222 (or the wall upon which the bracket plate is mounted), in a direction opposite to arrow 102 in FIG. 18 .
- Such movement concurrently pivots the manifold cap 215 in the same direction, and causes the cartridge cam pins 28 to ride outwardly along the bracket cam tracks 226 accompanied by closures of the sets of check valves 62 , 64 and 66 , 68 .
- the filter cartridge 216 can be pulled downwardly with the cam pins 28 guiding along the cap cam tracks 272 as the cartridge is separated from the cap.
- a replacement filter cartridge 216 can be quickly and easily installed in the manner previously described. Importantly, such cartridge removal also takes place in a substantially drip-free manner.
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Abstract
Description
- This application claims the benefit of U.S.
Provisional Application 60/541,844, filed Feb. 3, 2004. - This invention relates generally to water purification systems of the type having one or more filter elements for producing a supply of filtered or relatively purified water, wherein the filter elements are supported by a filter manifold for relatively quick and easy removal and replacement. More particularly, this invention relates to an improved water purification system wherein each filter cartridge is adapted for removal and replacement in a substantially fail-safe manner, with little or no risk of undesired water spillage in the course of filter cartridge changeover, or from a removed filter cartridge.
- Water purification systems are generally well known in the art for producing a relatively purified water supply used for drinking, cooking, etc. Such purification systems commonly employ one or more filter elements connected to an incoming water supply such as a standard tap water inflow. The filter elements appropriately filter or otherwise purify the water inflow to produce a relatively purified water supply which may be coupled directly to a faucet valve or the like for immediate dispensing, or otherwise coupled to a reservoir where it is stored pending dispensing demand. In one common configuration, the purification system comprises a plurality of filter elements including particulate filtration, carbon filtration, and a reverse osmosis (RO) membrane supported on or in a manifold constructed for suitably connecting each filter element to mating flow couplers for normal purification operation, while additionally accommodating relatively quick and easy removal and replacement of each filter element. See, for example, U.S. Pat. Nos. 5,045,197; 5,435,909; 5,591,332; and 5,744,030, which are incorporated by reference herein. Such purification systems have been designed for under-counter installation in association with a kitchen sink or the like, or in a stand-alone so-called point-of-use water cooler.
- In water purification systems of the type described above, removal and replacement of each filter element is required on a periodic basis to maintain the quality of the produced purified water. The manifold filter element geometry is designed to facilitate filter element changeover, while insuring that each replacement filter element is properly connected for flow-through water passage at the correct location. However, before any one of the filter elements is removed from the manifold, it is first necessary to turn off the incoming water flow. Unfortunately, shutting off the incoming water flow requires the user to locate and properly operate an inflow shut-off valve before a filter element is removed. Many prior manifold systems designed for quick and easy filter element changeover have not provided any means for safeguarding against undesired filter element removal before the incoming water supply is turned off. In this regard, filter element removal without first turning off the water supply can result in significant water leakage and potential damage to adjoining flooring materials and the like.
- Some recent water purification systems have been designed for water supply shut-off, before permitting removal and replacement of a filter cartridge. See, for example, U.S. Patent Application Publication U.S. 2002/0125183 A1, which is also incorporated by reference herein. See also U.S. Pat. Nos. 5,591,332; and 5,744,030; and U.S. Patent Application Publication U.S. 2003/0102257 A1.
- The present invention is directed to further improvements in and to a combined replaceable filter cartridge and manifold, wherein the filter cartridge is adapted for quick and easy, substantially fail-safe removal from and installation onto the manifold, and further wherein such filter cartridge removal and replacement occurs substantially in the absence of water spillage from the manifold or from a removed filter cartridge.
- In accordance with the invention, a combined filter cartridge and manifold are provided for use in a water purification system or the like, to facilitate substantially fail-safe and substantially drip-free filter cartridge removal and replacement. The manifold is coupled to a suitable water supply and includes inlet and outlet fittings for quick and easy respective connection with water inlet and outlet ports on the filter cartridge. A pivotal manifold cap is mounted on the manifold for pivoting movement between a normal closed or lowered position overlying and retaining the filter cartridge in proper connected relation with the manifold fittings and the water supply, and an open or raised position for disconnection of the water supply before permitting filter cartridge separation from the manifold. Check valves at the cartridge inlet and outlet ports prevent water leakage from the removed cartridge. Upon installation of a replacement filter cartridge, the manifold cap is returned to the initial closed position, with cooperating cam elements on the manifold cap and filter cartridge drawing the cartridge inlet/outlet ports into secure connection with the manifold inlet/outlet fittings before reconnection with the water supply.
- In one preferred construction, the manifold includes a support bracket adapted for wall mounting at an under-counter location or the like, and including a pair of bracket arms for seated support of a pair of cam pins projecting outwardly from opposed sides of the filter cartridge. Positioning of a filter cartridge with said cam pins supported on the bracket arms orients the cartridge inlet/outlet ports in alignment with the manifold inlet/outlet fittings for correct, substantially fail-safe flow coupling therewith. The cartridge inlet/outlet check valves are adapted to open upon connection with the manifold inlet/outlet fittings, and to close upon separation therefrom. When the manifold cap is in the raised or open position, the support bracket is sufficiently exposed for filter cartridge removal and replacement relative to the bracket arms. Upon displacement of the manifold cap toward the lowered or closed position, a cam track defined by the manifold cap engages the cartridge cam pins to carry the cartridge inlet/outlet ports into proper and secure flow-coupled connection with manifold inlet/outlet fittings, followed by opening connection with the water supply. In this lowered or closed position, the manifold cap overlies at least the portion of the filter cartridge including the inlet/outlet ports and the associated manifold inlet/outlet fittings to positively block and prevent filter cartridge removal from the manifold.
- To remove the filter cartridge for replacement, the manifold cap is shifted upwardly to its raised or open position. Such displacement of the manifold cap initially shuts off the water supply connected to the manifold. Further manifold cap displacement sufficiently exposes the filter cartridge for manual removal or separation from the manifold.
- In one alternative preferred form, the cooperating cam elements on the pivotal manifold cap and filter cartridge accommodate swinging movement of the filter cartridge with the pivotally mounted manifold cap between an inoperative position with the cartridge extending generally downwardly and angularly outwardly from the support bracket, and an operative position with the cartridge suspended generally vertically from the support bracket. In the inoperative position, the water supply valve is disconnected from the filter cartridge which can be disassembled from or a replacement filter cartridge can be assembled with the manifold inlet/outlet fittings. By holding the filter cartridge in the inoperative position with the inlet/outlet ports properly engaged with the manifold inlet/outlet fittings, the cam elements accommodate swinging movement of the filter cartridge held manually swung toward the operative position to reconnect the water supply and releasibly lock the filter cartridge in place.
- Other features and advantages of the invention will become more apparent from the following detailed description, taken in conjunction with the accompanying drawings which illustrate, by way of example, the principles of the invention.
- The accompanying drawings illustrate the invention. In such drawings:
-
FIG. 1 is a schematic diagram illustrating a combined filter cartridge and manifold in a water purification system; -
FIG. 2 is an enlarged and fragmented front perspective view of a portion of the filter cartridge and manifold ofFIG. 1 , depicting a pivotally mounted manifold cap in a closed or lowered position supporting and retaining a filter cartridge in a normal operating position for filtering water; -
FIG. 3 is an enlarged and fragmented front perspective view corresponding generally withFIG. 2 , but showing the manifold cap is an open or raised position permitting filter cartridge removal and replacement; -
FIG. 4 is an enlarged horizontal sectional view taken generally on the line 4-4 ofFIG. 2 ; -
FIG. 5 is an exploded perspective view showing the manifold cap and associated manifold components; -
FIG. 6 is an exploded perspective view illustrating the manifold cap and a support bracket in exploded relation with a filter cartridge; -
FIG. 7 is a fragmented side elevation view taken generally on the line 7-7 ofFIG. 3 , and illustrating the manifold cap in the open or raised position; -
FIG. 8 is a fragmented side elevation view similar toFIG. 7 , but showing the manifold cap in a partially raised position approximately mid-way between the open and closed positions; -
FIG. 9 is a fragmented side elevation view similar toFIGS. 7 and 8 , taken generally on the line 9-9 ofFIG. 2 , and showing the manifold cap in the closed or lowered position; -
FIG. 10 is a fragmented front perspective view similar toFIG. 2 , but depicting an alternative preferred form of the invention with a pivotally mounted manifold cap in a closed or lowered position supporting and retaining a filter cartridge in a normal operating position for filtering water; -
FIG. 11 is a fragmented front perspective view similar toFIG. 10 , and showing the manifold cap in an open or raised position permitting filter cartridge removal and replacement; -
FIG. 12 is an exploded perspective view showing the manifold and filter cartridge components corresponding with the embodiment depicted inFIGS. 10-11 ; -
FIG. 13 is an enlarged horizontal sectional view taken generally on the line 13-13 ofFIG. 10 ; -
FIG. 14 is an exploded perspective view illustrating manifold and filter cartridge components in accordance with another alternative preferred form of the invention; -
FIG. 15 is a side elevation view illustrating initial engagement of the filter cartridge ofFIG. 14 with the manifold; -
FIG. 16 is an enlarged fragmented vertical sectional view illustrating initial engagement of the filter cartridge ofFIGS. 14-15 with the manifold; -
FIG. 17 is a side elevation view similar toFIG. 15 , but showing further engagement of the filter cartridge with the manifold; -
FIG. 18 is a side elevation view similar toFIGS. 15 and 17 , but depicting final engagement of the filter cartridge with the manifold; and -
FIG. 19 is an enlarged fragmented vertical sectional view illustrating final engagement of the filter cartridge ofFIG. 18 with the manifold. - As shown in the exemplary drawings, a combined filter cartridge and manifold system referred to generally in
FIG. 1 by thereference numeral 10 is provided for providing relatively purified water for dispensing by means of afaucet 11 or the like including (as shown) asuitable faucet valve 12 for regulating dispense water flow through afaucet spout 13 or the like. The cartridge andmanifold system 10 includes a manifold 14 having a pivotallymovable manifold cap 15 for normally retaining and supporting aremovable filter cartridge 16 to produce purified water for dispensing, as viewed inFIGS. 2 and 9 . Themanifold cap 15 can be raised from a normally closed position (FIGS. 2 and 9 ) to an open position (FIGS. 3 and 7 ) initially closing awater supply valve 18 and then exposing and releasing thefilter cartridge 16 for quick and easy removal and replacement. The manifold 14 and thefilter cartridge 16 includes one-way check valves which close upon cartridge removal from the manifold 14, whereby thefilter cartridge 16 can be removed and replaced in a substantially drip-free manner. -
FIG. 1 depicts the combined filter cartridge andmanifold system 10 mounted in-line along the length of a water supply conduit ortube 19 having an upstream segment coupled to asuitable water supply 20, such as a conventional tap water source or supply, and a downstream segment coupled in flow communication with thefaucet 11 for water dispensing. Asingle filter cartridge 16 is shown supported by the manifold 14, wherein thisfilter cartridge 16 may include a suitable filtration medium or media (not shown) for removing particulate and/or undesired potentially toxic liquid agents from the water flow stream. Persons skilled in the art will recognize and appreciate that multiple filter cartridges may be used in a common manifold arrangement, with supporting manifold structure being adapted for water flow in series through such multiple filter cartridges. One exemplary multi-cartridge manifold arrangement is shown and described in U.S. Patent Application Publication No. U.S. 2002/0125183 A1, which is incorporated by reference herein. Persons skilled in the art will recognize further that the relatively purified water outflow from one ormore filter cartridges 16 of the type depicted inFIG. 1 may be supplied to a storage reservoir (also not shown) where such water is available for immediate on-demand dispensing by means of thefaucet 11 or the like. - As shown in
FIGS. 2-9 with respect to one preferred form of the invention, the manifold 14 further comprises amanifold support bracket 22 formed from lightweight molded plastic or the like and having a rear bracket plate 23 (shown best inFIG. 6 ) adapted for convenient mounting onto a selected wall or other substrate (not shown) as by means of a suitable adhesive layer carried on a rear face thereof. Alternative fastening means such as one or more screws (not shown) may also be used for rearward fastening throughscrew ports 24 formed in theplate 23. A pair of laterally spaced-apartbracket arms 25 project outwardly or forwardly from a front side of thebracket plate 23. The upper surfaces oredges 26 of thesebracket arms 25 define an upwardly presented pair of cam rails, the outboard or distal ends of which include relatively short up-turned stops 27. These cam rails 26, defined by the spaced-apartbracket arms 25, are oriented generally in parallel with each other for slidably supporting a pair of cam lugs or pins 28 projecting laterally outwardly from opposite sides of aheader 30 mounted on the upper end of eachfilter cartridge 16, as will be described herein in more detail. - The manifold 14 further includes a
valve body 32 adapted for in-line mounting along the length of the water supply flow conduit ortube 19. This valve body 32 (FIG. 5 ) comprises a tubular structure which may also be formed from a lightweight molded plastic or the like and includes a downwardly protrudingbracket card 33 having a size and shape for relatively close-fit sliding reception into an upwardly open rear pocket 34 (FIG. 6 ) defined by a forwardly offset central segment of the wall-mountedmanifold bracket plate 23. A pair of forwardly projectingguide flanges 35 on thebracket card 33 conveniently slide-fit into upwardlyopen slots 36 in thebracket plate 23 for securely retaining these components in assembled relation, while permitting upward slide-out removal of thevalve body 32 from thebracket plate 23, when and if desired. When mounted onto therear bracket plate 23, thevalve body 32 is oriented to extend generally horizontally or laterally across a front side of thebracket plate 23. - The
valve body 32 includes a pair of forwardly protruding tubular fittings comprising an inlet fitting 37 and an outlet fitting 38 (FIG. 5 ) adapted for respective slide-fit coupling with atubular inlet port 39 and outlet port 40 (FIG. 6 ) on thehead 30 of theremovable filter cartridge 16.FIGS. 4-5 illustrate the inlet andoutlet fittings valve body 32. As viewed best inFIG. 4 , the inlet fitting 37 is adapted for connection via an inlet bore 41 in thevalve body 32 to the incoming water flow from thewater supply 20, whereas the outlet fitting 38 is adapted for connection via an outlet bore 42 in thevalve body 32 to thefaucet 11 or the like. - The
valve body 32 carries thewater supply valve 18 generally at an upstream end of the inlet bore 41 for appropriate on-off movement for respectively permitting and preventing water flow into and through the manifold 14 and associatedfilter cartridge 16 mounted thereon. More particularly, as shown best inFIG. 5 , the illustrativewater supply valve 18 comprises atubular valve member 44 having aninsert segment 45 with an external ormale thread 46 formed thereon for part-turn thread-in engagement with a mating internal orfemale thread 47 formed within the inlet bore 41 at the upstream end thereof. An outboard head segment 48 (FIG. 5 ) of thevalve member 44 includes one or more axially elongatedexternal drive keys 49 protruding radially outwardly therefrom for axial slide-fit reception into acylindrical drive hub 50 on themanifold cap 15, wherein thisdrive hub 50 has matingly shaped internal slottedkeyways 51 formed therein. With this construction, rotation of themanifold cap 15 relative to themanifold valve body 32, upon raising and lowering of the manifold cap 15 (FIGS. 2 and 3 ) as will be further described, thedrive hub 50 on thecap 15 rotatably engages and drives thehead segment 48 for correspondingly advancing and retracting the threadedinsert segment 45 through an incremental axial stroke, relative to thevalve body 32. - The
tubular valve member 44 has a check valve assembly mounted therein, including aresilient valve head 52 mounted therein for engaging and closing anannular valve seat 53 to prevent water inflow from thewater supply 20 through the manifold inlet bore 41 to the manifold inlet fitting 37, thereby preventing water flow to and through thefilter cartridge 16 when connected with the manifold 14. In this regard, rotation of themanifold cap 15 in one direction rotatably displaces thevalve member 44 to a closed position with thevalve seat 53 axially advanced into seated engagement with an upstream surface of thevalve head 52. Conversely, rotation of themanifold cap 15 in an opposite direction rotatably displaces thevalve member 44 to an open position with thevalve seat 53 axially retracted from thevalve head 52 to permit water flow to the inlet fitting 37 and thefilter cartridge 16 coupled thereto.FIG. 4 illustrates thevalve seat 53 in this axially retracted or open position, with water pressure at an upstream side of thewater supply valve 18 functioning to urge and retain thevalve head 52 against astop pin 54 which protrudes axially in an upstream direction within the inlet bore 41. - The water supply tube or
conduit 19 is conveniently coupled to the manifold 14 by means of a pair of collet-style couplers 55, one of which is mounted at an upstream end of thetubular valve member 44, in association with an axially-downstream adjacent pair of O-ring seals 56. A second one of the collet-style couplers 55 is mounted at a downstream end of the outlet bore 42 formed in thevalve body 32, in association with an axially-upstream adjacent pair of O-ring seals 56. These collet-style couplers 55 are designed for quick and easy push-in or slide-fit gripped reception and retention of the associated end of thewater supply tube 19, particularly in the case where thissupply tube 19 comprises a length of plastic tubing. Such collet-style push-fit couplers are known in the art, and are shown and described by way of example in more detail in U.S. Pat. No. 4,005,883, which is incorporated by reference herein. Alternative means for coupling thewater supply line 19 to the manifold 14 will also be apparent to persons skilled in the art. - As noted previously, the
manifold cap 15 includes the internally slotteddrive hub 50 which is slidably fitted over and rotatably displaces the externally keyedhead segment 48 of thetubular valve member 44. As best illustrated inFIGS. 2-6 , thisdrive hub 50 protrudes outwardly from one side of a dependingcap side wall 57 which is joined in turn with atop wall 58, thereby providing themanifold cap 15 with a downwardly open or inverted, generally cup-shaped configuration. Anaperture 59 is also formed in the cap side wall 57 (shown best inFIG. 3 ) opposite thedrive hub 50, whereby the manifold cap can be pivotally shifted between a lowered position (FIG. 2 ) and a raised position (FIG. 3 ) through a rotary angle of about 90°. Such pivoting movement of themanifold cap 15 is effective to rotatably shift thewater supply valve 18 between an open position when thecap 15 is in the lowered position (FIG. 2 ) extending generally over to cover and conceal the inlet andoutlet fittings manifold valve body 32, and a closed position when thecap 15 is in the raised position (FIG. 3 ) exposing the inlet andoutlet fittings - The manifold 14 and the
filter cartridge 16 both include one-way check valves which close upon cartridge removal from the manifold 14, whereby thefilter cartridge 16 can be removed and replaced in a substantially drip-free manner. Conversely, upon cartridge installation onto the manifold 14, with the manifold inlet andoutlet ports outlet ports filter cartridge 16 for appropriate purification. In particular, when thefittings ports water supply valve 18 is opened, water is permitted to flow from thewater supply 20 and through the manifold inlet bore 41 and into the filter cartridge via theinlet port 39. This water flow continues within thefilter cartridge 16 in a known manner, in association with the purification media therein, and eventual exit flow via theoutlet port 40 through the manifold outlet bore 42 to thefaucet 11 or the like for dispensing. - Each of the inlet and
outlet fittings outlet ports resilient valve head 60 positioned for movable displacement between open and closed positions relative to an associatedannular valve seat 61. However, the orientations of these check valves in thefittings ports filter cartridge 16 relative to themanifold 14. - More particularly, a first
manifold check valve 62 is positioned within the inlet fitting 37 and oriented for pressure-actuated movement to a normally closed position prevent water flow from the associated inlet bore 41 in a direction outwardly from said inlet fitting 37. A secondmanifold check valve 64 is positioned within the outlet bore 42 in flow communication with the outlet fitting 38, and is oriented for pressure-actuated movement relative to the associatedvalve seat 61 to permit water outflow from the outlet bore 42 toward thefaucet 11 or the like, while preventing water back-flow therethrough. Accordingly, when a filter cartridge is not coupled with the manifold inlet andoutlet fittings manifold check valves water supply valve 18. - A first
cartridge check valve 66 is positioned within theinlet port 39 of thefilter cartridge 16 and oriented for pressure-actuated movement to permit water inflow through the inlet port and into the interior of the filter cartridge. Conversely, this first cartridge check valve positively prevents water outflow from the filter cartridge through theinlet port 38. A secondcartridge check valve 68 is mounted within theoutlet port 40 of the filter cartridge and is oriented for pressure-actuated movement for normally preventing water outflow through theoutlet port 40 to the cartridge exterior. Accordingly, when the filter cartridge inlet andoutlet ports outlet fittings cartridge check valves port cartridge 16 from the manifold 14 as will be described further herein, the first and secondcartridge check valves - When the
filter cartridge 16 is mounted onto the manifold 14, with the inlet andoutlet ports outlet fittings inlet port 39 and protruding outwardly a short distance therefrom engages the firstmanifold check valve 62 to displace said check valve to an open position permitting water from the manifold inlet bore 41 and through thecartridge inlet port 39 into the filter cartridge interior. Accordingly, provided that thewater supply valve 18 has been opened by appropriate movement of themanifold cap 15, the firstmanifold check valve 62 is thus opened and the resultant water flow and pressure at an upstream side of the firstcartridge check valve 66 shifts that check valve to an open position too. - At the same time, an annular nipple or stem 70 at the distal end of the manifold outlet fitting 38 engages the second
cartridge check valve 68 to shift that check valve to an open position. As a result, water outflow from thefilter cartridge 16 via theoutlet port 40 is permitted. Such water outflow passes through the manifold outlet fitting 38 and the manifold outlet bore 42 for pressure-actuated opening of the secondmanifold check valve 64. Accordingly, the water outflow may continue from the manifold outlet bore 42 through thewater supply tubing 19 to thefaucet valve 12. - Mounting of the
filter cartridge 16 with the inlet andoutlet ports outlet fittings manifold cap 15 with appropriate opening and closing movement of thewater supply valve 18. More particularly, as previously noted herein, when themanifold cap 15 is lifted to the raised position as viewed inFIGS. 3 and 7 , thewater supply valve 18 is turned off. In this cap position, the upper end of the filter cartridge 16 (if connected with the manifold) is exposed for convenient manual grasping and simple removal from the manifold 14 by slide-off or slide-away disengagement of the cartridge inlet andoutlet ports outlet fittings filter cartridge 16 is precluded from dripping or spilling from the cartridge by the closed states of the twocartridge check valves replacement filter cartridge 16 can be oriented with its inlet andoutlet ports outlet fittings manifold cap 15 as viewed inFIGS. 2 and 9 . Such downward movement of themanifold cap 15 is accompanied by re-opening of thewater supply valve 18 for resumed water flow through the filter cartridge. - Proper filter cartridge mounting onto the manifold is facilitated and assured by a pair of cam slotted
tracks 72 formed on the mountingcap 15 at opposite inboard-positioned sides thereof. These slotted cam tracks have a generally matching arcuate or curved shape, and are appropriately sized and positioned to receive and guidingly engage the cam pins 28 projecting outwardly from opposite sides of thehead 30 on thefilter cartridge 16 as themanifold cap 15 is pivotally shifted between the lowered and raised positions shown respectively inFIGS. 2 and 3 . - In particular, with the
manifold cap 15 in the raised position (FIGS. 3 and 7 ) with thewater supply valve 18 in the closed position, areplacement filter cartridge 16 is installed onto the manifold 14 by initially positioning the cartridge with the cam pins 28 resting upon the cam rails 26 defined by the pair ofbracket arms 25. In this position, the pair of cam pins 28 are generally and respectively positioned in slide-fit alignment with the pair cam tracks 72 on themanifold cap 15. Then, downward pivoting motion of the manifold cap causes the cam tracks 72 to engage and carry the cam pins 28 along the cam rails 30 to correspondingly carry the cartridge inlet andoutlet ports outlet fittings filter cartridge 16 into correct slide-on flow-coupled engagement with themanifold fittings FIG. 8 . As themanifold cap 15 is further rotated downwardly toward the lowered position as viewed inFIGS. 2 and 9 , thecap 15 shifts thewater supply valve 18 to the open position and the filter cartridge is thus rendered operational. In this configuration, themanifold cap 15 protectively overlies and substantially conceals the upper end of thefilter cartridge 16 from access and view, while additionally wrapping relatively closely about a forward side of the filter cartridge to physically obstruct and prevent cartridge separation from the manifold. - Upon subsequent return movement of the
manifold cap 15 toward the raised position, thewater supply valve 18 is initially turned off followed by partial retraction of the cartridge inlet andoutlet ports outlet fittings manifold cap 15 nears or reaches the elevated position shown inFIGS. 3 and 7 , the upper end of thefilter cartridge 16 is sufficiently exposed for quick and easy slide-off separation from the manifold 14, as previously described herein. - Accordingly, the embodiment depicted in
FIGS. 1-9 provides a relatively simple and easily manipulated system for positively assuring that a water supply valve is turned off before a filter cartridge can removed for replacement. Moreover, upon proper removal of the filter cartridge, the check valves at the various manifold and cartridge fittings and ports positively prevent any significant leakage of water from the manifold or the removed cartridge. A replacement filter cartridge is quickly and easily mounted onto the manifold in the correct flow-coupled relation, again in a substantially drip-free manner, followed by return movement of the water supply valve to an open position for resumed water filtration. - One alternative preferred form of the invention is shown in
FIGS. 10-13 , wherein components corresponding with those shown and described inFIGS. 1-9 are identified by common reference numeral, and further wherein modified components are identified common reference numerals increased by 100. In general, the modified filter cartridge and manifold system orunit 110 shown inFIGS. 10-13 utilizes a modifiedwater supply valve 118 that eliminates the need for separate manifold check valves such as themanifold check valves FIGS. 4-5 . - The modified
system 110 depicted inFIGS. 10-13 includes a modifiedmanifold valve body 132 adapted for slide-fit seated support upon thebracket plate 23 having the forwardly protrudingbracket arms 25 as previously described. Thebracket arms 25 define upwardly presented and generally parallel cam rails 26 for supported engagement by the pair of laterally opposed, outwardly projecting cam pins or lugs 28 on thehead 30 of theremovable filter cartridge 16. As in the previous embodiment ofFIGS. 1-9 , thevalve body 132 defines a pair of forwardly projecting inlet andoutlet fittings 37, 38 (FIG. 12 ) for suitable slide-fit and flow-coupled engagement with a corresponding pair of inlet andoutlet ports valve cartridge head 30. Amanifold cap 15 is pivotally mounted relative to thevalve body 132 between a lowered position (FIG. 10 ) overlying and protectively concealing themanifold fittings filter cartridge 16 while positioning a modifiedwater supply valve 118 in a open position for water flow to and through the filter cartridge for purification. However, themanifold cap 15 can be elevated to the raised position (FIG. 11 ) for initially closing the water supply valve 124 and then exposing the upper end of thefilter cartridge 16 for quick and easy slide-away removal and replacement. - The modified
valve body 132 has an upstream end protruding axially from an upstream side of themanifold cap 15, wherein this upstream end extends into the cap interior to a stepped shoulder 74 (FIGS. 12-13 ) whereat thevalve body 132 expands in diametric size for the balance of the length thereof. This larger diameter segment of thevalve body 132 is structurally connected to or formed integrally with thebracket card 33 for secure and stable support on thebracket plate 23. Atubular valve member 144 of reduced diametric size is slidably fitted into the open end of this larger diameter segment of thevalve body 132. The tubular valve member includes a radially openinlet valve port 162 formed in axially spaced relation with a radially openoutlet valve port 164, with saidvalve ports outlet fittings valve body 132. A radially stepped-down upstream end of thevalve member 144 defines a radial shoulder for engaging an internal shoulder at an upstream end of the larger diameter segment of thevalve body 132, for normally aligning thevalve ports outlet fittings valve member 144 defines the inlet bore 41 for receiving water inflow from a source or supply, and then turns radially for flow communication with theinlet valve port 162. A downstream segment of thevalve member 144 defines the outlet bore with a radially turned end for flow communication with theoutlet valve port 164. A pair of O-ring seals 75 or the like are captured about thevalve member 144 at positions axially opposed to theoutlet valve port 164. - In accordance with one aspect of the invention, the downstream or outlet end of the
tubular valve member 144 defines a shallow counterbore 76 (FIGS. 12-13 ) for sealed slide-fit reception of an upstream end of thevalve body 132 associated with a subsequent cartridge/manifold unit or system 110 (FIG. 10 ) in succession. Similarly, the upstream end of thevalve body 132, which will typically carry an O-ring seal 77 (FIGS. 12-13 ) or the like, is sized for slide-fit and sealed reception into the downstream end of a prior cartridge/manifold unit orsystem 110 in succession (FIG. 10 ). A spring-loadedbayonet clip 78 is conveniently mounted on the mountingcap 15 for releasibly engaging acircumferential groove 79 formed near an upstream end of theadjacent valve body 132, to releasibly lock the successive stages of a resultant multi-cartridge purification system in series relation. Such spring-loaded bayonet clips 78 are known in the art for tubing connections, as disclosed, for example, in more detail in U.S. Pat. No. 4,436,125 which is incorporated by reference herein. - A
spring 80 is desirably provided to react axially between an upstream end of thevalve member 144 and another internal shoulder formed within thevalve body 132 for axially biasing thevalve member 144 toward a position with thevalve ports outlet fittings valve member counterbore 76. However, when the subsequent purification stage is assembled with the illustratedunit 110, thevalve member 144 is axially shifted against thespring 80 for aligning thevalve ports outlet fittings - The
tubular valve member 144 is rotatably shifted upon pivotal movement of themanifold cap 15 for moving thevalve ports outlet fittings 37, 38 (as shown inFIG. 13 ), and a closed position with saidvalve ports fittings inlet valve port 162, for flow to thefilter cartridge 16 through theinlet port 39 thereof. In this regard, in the embodiment ofFIGS. 10-13 , the actuator pin 69 (FIG. 4 ) on thecartridge inlet port 38 may be omitted in the absence of the first manifold check valve 60 (FIG. 4 ). In a similar manner, water from thecartridge outlet port 40 is in flow communication with the manifold outlet fitting 38 for flow to the subsequent purification stage orunit 110, and ultimately to a faucet valve or the like. The second manifold check valve 62 (FIG. 4 ) may also be omitted. - The mounting
cap 15 is engaged by aradially protruding lug 82 on thevalve member 144, for rotatably displacing the valve member as thecap 15 is raised and lowered. Importantly, the orientation of thevalve member 144 and lug 82 relative to thecap 15 provides for alignment of thevalve ports inlet fittings valve body 132 and the filter cartridge coupled therewith (FIG. 10 ). As thecap 15 is raised (FIG. 11 ), the water supply valve 124 is initially closed by misalignment of thevalve ports inlet fittings replacement filter cartridge 16 is in place, themanifold cap 15 can be pivoted back down to the lowered position (FIG. 10 ), the inlet andoutlet ports cartridge ports manifold fittings water supply valve 118 for resumed filter operation. Importantly, removal and replacement of thefilter cartridge 16 takes place in a substantially drip-free manner. - A further alternative preferred form of the invention is shown in
FIGS. 14-19 , wherein components corresponding with those shown and described inFIGS. 1-9 are again identified by common reference numerals, and further wherein modified components are identified common reference numerals increased by 200. - In general, the modified filter cartridge and manifold system or
unit 210 shown inFIGS. 14-19 includes a modifiedfilter cartridge 216 having ahead 230 equipped with a pair of laterally opposed cam lugs or cam pins 28, in combination with a pair of inlet andoutlet ports cartridge check valves cartridge check valve 66 at theinlet port 239 includes an outwardly protruding actuator pin orprobe 69. The orientation of the cartridge inlet andoutlet ports FIGS. 1-13 , in that the cartridge inlet andoutlet ports cartridge head 230. - The cartridge inlet and
outlet ports outlet fittings tubular valve body 232. In general, thistubular valve body 232 conforms with thevalve body 32 shown and described in the embodiment ofFIGS. 1-9 , except that the separatewater supply valve 18 and its rotary drive coupling with a manifold cap is omitted. Thetubular valve body 232 does include a pair of collet-style couplers 55 including O-ring seals 56 at the upstream and downstream ends thereof for respective slide-in coupling with the adjacent ends of the water supply conduit or tube 19 (not shown inFIGS. 14-19 ). An upstream end segment of thevalve body 232 defines an inlet bore 41 for water supply flow communication with the radially out-turned inlet fitting 237 that has the firstmanifold check valve 62 mounted therein. A downstream segment of thevalve body 232 defines the outlet bore 42 for coupling the outlet fitting 238 with the faucet or the like, with the secondmanifold check valve 64 mounted within said outlet bore 42. An annular actuator nipple or stem 70 is formed at a distal end tip of the outlet fitting 238. - The
tubular valve body 232 is movably mounted on a modifiedsupport bracket 222 for rotary movement with a modifiedmanifold cap 215 as thefilter cartridge 216 is installed or removed for replacement. This modifiedsupport bracket 222 is shown best inFIG. 14 to includerear bracket plate 223 having an upper pair of forwardly projecting bearingarms 90 defining a downwardly open pair of axially spaced and generally part-circle bearing seats 92 for rotatably receiving and engaging thetubular valve body 232 near the axially opposed ends thereof. Thesupport bracket 222 further includes a lower pair of forwardly projectingbracket arms 225 defining a forwardly open pair of generally horizontally oriented cam slots or tracks 226. - The
valve body 232 is fitted against the downwardlyopen bearing seats 232 defined by the bearingarms 90, and the modified mountingcap 215 is mounted over the valve body so that the axially opposed valve body ends protrude at least a short distance throughopenings 93 formed in the opposed side walls of the 257 of the cap. In this position, a central portion of thevalve body 232 is nested upwardly against an internal bearing seat 94 (FIG. 16 ) formed on the underside of the cap top wall 258. Aninner cap shell 96 is then assembled with thecap 215 as by means of a pair of screws 97 or the like fastened upwardly into the cap top wall 258 (shown best inFIG. 16 ), so that a part-circle bearing cradle 98 (FIG. 14 ) defined by an upper surface of theinner shell 96 engages and retains thevalve body 232 securely against the cap bearing seat 94. With this assembly of components, themanifold cap 215 is rotatably mounted on thesupport bracket 222, and thetubular valve body 232 is carried by themanifold cap 215 for rotation therewith. Importantly, themanifold cap 215 is rotatable generally about a central axis of thevalve body 232, whereby thevalve body 232 is rotatable about the central axis thereof. - The
inner cap shell 96 carried by themanifold cap 215 additionally defines a downwardly open, generally oval-shapedpassage 100 having the radially projecting manifold inlet andoutlet fittings outlet ports filter cartridge 216. Thus, thefilter cartridge 216 can be oriented for slide-in reception of the inlet andoutlet ports passage 100, for appropriate respective engagement with the manifold inlet andoutlet fittings outlet fittings ports FIGS. 1-9 to permit water inflow to thecartridge 216 via the first manifold and firstcartridge check valves manifold check valves manifold check valves manifold fittings cartridge ports - The
manifold cap 215 further defines a downwardly open pair of vertically elongated cam tracks 272 formed in theopposed side walls 257 thereof, for slide-fit guided reception of the cam pins 28 on thefilter cartridge 216. In this regard, initial filter cartridge installation is performed by initially pivoting themanifold cap 215 about the axis of thevalve body 232 toward a partially raised, angularly outward orientation as viewed inFIG. 15 . This partially raised cap position is sufficient for the cap cam tracks 272 to clear the forward or distal ends of the bracket cam tracks 226, and thereby accommodate unobstructed upwardly slide-in reception of the cartridge cam pins 28. - Movement of the
manifold cap 215 to this partially raised position shown inFIG. 15 also rotatably displaces theinner cap shell 96 for orienting theguide passage 100 formed therein for slide-in reception of the upwardly projecting inlet andoutlet ports filter cartridge 216, concurrently with slide-fit reception of the cam pins 28 into the cap cam tracks 272. Importantly, in this partially assembled position, the inlet/outlet ports filter cartridge 216 are properly aligned with the manifold inlet/outlet fittings FIG. 16 . Subsequent push-in displacement of the filter cartridge 216 (FIG. 17 ) to displace the cam pins 28 generally upwardly along the cap cam tracks 272 thus also moves the cartridge inlet/outlet ports outlet fittings - As the
filter cartridge 216 is push-fit assembled with themanifold cap 215, so that the cartridge cam pins 28 reach the uppermost ends of the cap cam tracks 272 is accompanied by alignment of the cam pins 28 with the open distal ends of the bracket cam tracks 226. Accordingly, as viewed inFIGS. 18-19 , thefilter cartridge 216 can then be pivotally displaced to swing a lower end thereof toward the bracket plate 222 (or the wall upon which the bracket plate is mounted) in the direction ofarrow 102 inFIG. 18 , thereby displacing the cartridge cam pins 28 along the bracket cam tracks 226. Importantly, in the course of the final swinging movement of thefilter cartridge 216, the bracket cam tracks 226 force the cartridge cam pins 28 in a direction causing the cartridge inlet/outlet ports outlet fittings check valves filter cartridge 216 is installed substantially in a drip-free manner. When the cartridge cam pins 28 reach the inboard ends of the bracket cam tracks 226, the manifold cap 215 (which is pivotally rotated with the cartridge toward a substantially vertical position) is oriented with the cap cam tracks 272 in a substantially vertical orientation. Thus, the cartridge cam pins 28 are retained cooperatively by the substantially vertical cap cam tracks 272 and the substantially horizontal bracket cam tracks 226, resulting is effective locked retention of thefilter cartridge 216 in the upright, operational position as viewed inFIGS. 18-19 . - Subsequent manual replacement of the
filter cartridge 216 is performed by initially swinging the lower end of the cartridge outwardly from the bracket plate 222 (or the wall upon which the bracket plate is mounted), in a direction opposite toarrow 102 inFIG. 18 . Such movement concurrently pivots themanifold cap 215 in the same direction, and causes the cartridge cam pins 28 to ride outwardly along the bracket cam tracks 226 accompanied by closures of the sets ofcheck valves filter cartridge 216 can be pulled downwardly with the cam pins 28 guiding along the cap cam tracks 272 as the cartridge is separated from the cap. Then, areplacement filter cartridge 216 can be quickly and easily installed in the manner previously described. Importantly, such cartridge removal also takes place in a substantially drip-free manner. - A variety of further modifications and improvements in and to the improved filter cartridge and
manifold system 10 of the present invention will be apparent to those persons skilled in the art. Accordingly, no limitation on the invention is intended by way of the foregoing description and accompanying drawings, except as set forth in the appended claims.
Claims (20)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US11/042,975 US20050167352A1 (en) | 2004-02-03 | 2005-01-24 | Filter cartridge and manifold for a water purification system |
US11/281,316 US7387210B2 (en) | 2004-02-03 | 2005-11-16 | Filter cartridge and manifold for a water purification system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US54184404P | 2004-02-03 | 2004-02-03 | |
US11/042,975 US20050167352A1 (en) | 2004-02-03 | 2005-01-24 | Filter cartridge and manifold for a water purification system |
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US11/281,316 Continuation US7387210B2 (en) | 2004-02-03 | 2005-11-16 | Filter cartridge and manifold for a water purification system |
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US20050167352A1 true US20050167352A1 (en) | 2005-08-04 |
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US11/281,316 Expired - Fee Related US7387210B2 (en) | 2004-02-03 | 2005-11-16 | Filter cartridge and manifold for a water purification system |
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US11/281,316 Expired - Fee Related US7387210B2 (en) | 2004-02-03 | 2005-11-16 | Filter cartridge and manifold for a water purification system |
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Also Published As
Publication number | Publication date |
---|---|
EP1732661A1 (en) | 2006-12-20 |
RU2006131605A (en) | 2008-03-10 |
MXPA06008658A (en) | 2007-04-25 |
WO2005077490A1 (en) | 2005-08-25 |
US20060113240A1 (en) | 2006-06-01 |
US7387210B2 (en) | 2008-06-17 |
EP1732661A4 (en) | 2007-05-30 |
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