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
  • B01D27/00—Cartridge filters of the throw-away type
  • B01D27/08—Construction of the casing
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D27/00—Cartridge filters of the throw-away type
  • B01D27/10—Safety devices, e.g. by-passes
  • B01D27/106—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
  • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
  • B01D35/147—Bypass or safety valves
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2201/00—Details relating to filtering apparatus
  • B01D2201/16—Valves
  • B01D2201/165—Multi-way valves
• • 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
  • B01D2201/4046—Means for avoiding false mounting of different parts

Definitions

• the replaceable filters employed in commercial and consumer appliances are manufactured in accordance with particular design ' specifications and perfo ⁇ nance parameters provided by the appliance manufacturer.
• the filter media used in such filters consists of a proprietary material or is manufactured using a proprietary process.
• appliance manufactures often recommend that replacement cartridges be purchased from the original equipment provider so as to ensure the integrity and proper operation of the filtering system.
• the filter assembly comprises a cartridge member, which includes a body portion for enclosing filter media and a neck portion depending therefrom.
• the neck portion of the cartridge includes at least one inlet port for directing unfiltered fluid into the body portion and at least one outlet port for directing filtered fluid out of the body portion.
• the neck also has at least two lugs depending radially outwardly therefrom, wherein at least one lug defines a keyed engagement surface, a leading inclined cam surface and a trailing inclined cam surface.
• the keyed engagement surface is on an axially facing surface of the at least one lug.
• the neck portion of the cartridge member includes first and second axially facing surfaces.
• the first axially facing surface has at least one inlet port formed therein and the second axially facing surface has at least one outlet port formed therein.
• the representative filter assembly may further include a support member which is disposed between the head member and the cartridge member and includes an aperture for receiving the neck portion of the cartridge member.
• the aperture has an inner surface that defines at least two cam ramps for interacting with the leading inclined cam surface formed on the lug(s) to facilitate engagement of the lug(s) of the cartridge member with the support member.
• the neck portion of the cartridge member has a pair of diametrically opposed lugs.
• the neck portion of the cartridge member has three circumferentially spaced apart lugs.
• the neck portion of the cartridge member has first and second pairs of diametrically opposed lugs, wherein the first pair of lugs is disposed at a first height on the neck portion and the second pair of lugs is disposed at a second height on the neck portion.
• the present disclosure is also directed to a representative filter cartridge, which includes a body portion and a neck portion. The body portion of the cartridge encloses filter media for filtering a fluid, which is passed therethrough.
• the neck portion communicates with the body portion and includes an inlet port for directing unfiltered fluid into the body portion and at least one outlet port for directing filtered fluid out of the body portion.
• the neck portion presently preferably, has at least two lugs, which depend radially outwardly therefrom, wherein at least one lug defines a keyed engagement surface, a leading inclined cam surface and a trailing inclined cam surface.
• the keyed engagement surface enables the cartridge to mate with a compatible reception assembly and the trailing inclined cam surface facilitating the mating therewith.
• the neck portion of the cartridge member has a pair of diametrically opposed lugs.
• the neck portion of the cartridge member has three circumferentially spaced apart lugs.
• the neck portion of the cartridge member has first and second pairs of diametrically opposed lugs, wherein the first pair of lugs is disposed at a first height on the neck portion and the second pair of lugs is disposed at a second height on the neck portion.
• the first circumferential groove is positioned between the at least one inlet port of the neck member and the body portion and the second circumferential groove is positioned between the at least one inlet port and the at least one outlet port.
• the present disclosure is also directed to a representative filter assembly, which includes a replaceable cartridge, a head member, a valve and a sxipport structure.
• the cartridge has a body portion for enclosing filter media and a neck portion that includes at least one axially extending inlet port for directing unf ⁇ ltered fluid into the body portion and at least one axially extending outlet port for directing filtered fluid out of the body portion.
• the neck portion has at least two lugs depending radially outwardly therefrom, the at least one lug defining a keyed engagement surface, a leading inclined cam surface and a trailing inclined cam surface.
• FIG. 8 is an elevational view of the representative upper portion of the filter cartridge and the valve member of FIG. 3, with the representative interlocking features thereof in axial alignment to facilitate the engagement therebetween;
• FIG. 9 is an elevational view of the representative upper portion of the representative filter cartridge and the representative head member of FIG. 3, rotated 180° from the position shown in FIG. 8, with the representative interlocking features thereof in axial alignment to facilitate the engagement therebetween;
• FIG. 11 is a perspective view of the representative upper portion of the representative filter assembly of the present disclosure, with the representative wall of the representative head member broken away to illustrate the final position of the representative keyed camming lug of the representative filter relative to the representative ramped camming surface of the representative bracket member, wherein the representative valve assembly with which the representative head member is associated is open to flow;
• FIGS. 21-27 illustrate each of the available key patterns for a representative camming lug having a maximum of five teeth positions
• FIGS. 28-40 illustrate each of the available key patterns for a representative camming lug having a maximum of six teeth positions
• FIG. 41 is a top plan view of the neck portion of a representative filter cartridge constructed in accordance with a preferred representative embodiment of the present disclosure which includes three circumferentially representative spaced camming lugs each having a different key formation thereon;
• FIG. 42 is a side elevational view of the representative neck portion of the representative filter cartridge of FIG. 41 , taken along line 42-42;
• FIG. 43 is a side elevational view of the representative neck portion of the representative filter cartridge of FIG. 41, rotated 120° from the view shown in FIG. 42;
• FIG. 44 is a side elevational view of the representative neck portion of the representative filter cartridge of FIG. 41, rotated 120° from the view shown in FIG.
• FIG. 45 is a top plan view of the representative neck portion of a representative filter cartridge constructed in accordance with a preferred representative embodiment of the present disclosure which includes two sets of diametrically opposed camming lugs positioned at two different levels on the representative neck portion of the cartridge;
• FIG. 46 is a side elevational view of the representative neck portion of the representative filter cartridge of FIG. 45, taken along line 46-46;
• FIG. 47 is a side elevational view of the representative neck portion of the representative filter cartridge of FIG. 45, rotated 90° from the view shown in FIG. 46;
• FIG. 48 is a side elevational view of the representative neck portion of the representative filter cartridge of FIG. 45, rotated 90° from the view shown in FIG. 47;
• FIG. 49 is a side elevational view of the representative neck portion of the representative filter cartridge of FIG. 45, rotated 90° from the view shown in FIG. 48;
• FIG. 50 is a side elevational view in cross-section, of another representative filter assembly constructed in accordance with a preferred representative embodiment of the present disclosure wherein a representative ball valve is positioned within the assembly to inhibit the representative egress of fluid from the system when the filter cartridge is removed from the assembly, with the ball valve shown in an open position;
• FIG. 51 is a side elevational view in cross-section, of the representative filter assembly of FIG. 50 with the ball valve shown in a closed position as the representative filter cartridge is removed from the assembly;
• FIG. 52 is an exploded perspective view of another representative filter assembly constructed in accordance with a representative preferred embodiment of the present disclosure with the parts thereof separated for ease of illustration, including an annular insert in the form of a key ring having recesses designed to mate with corresponding surface features on the keyed cam lugs of a replacement filter cartridge;
• FIG. 53 is a perspective view of the representative filter assembly of the FIG. 52 with the head portion in cross-section to illustrate the interior structure thereof;
• FIG. 54 is an exploded perspective view of another representative filter assembly constructed in accordance with a preferred embodiment of the present disclosure with the parts separated for ease of illustration, which includes a valve member that may be rotated relative to a representative head portion of the representative filter assembly between an open position wherein fluid is permitted to flow through the representative filter assembly and a bypass position wherein unrestricted fluid flows through the filter head from inlet to outlet;
• FIG. 56 is an enlarged perspective view of the upper portion of the replaceable filter cartridge shown in FIGS. 54-55, illustrating the structure of the neck portion thereof;
• FIG, 57 is an enlarged perspective view of the area designated by the reference number 4 in FIG. 54, illustrating reception structures formed within the interior cavity of the valve member and configured for receiving cam lugs;
• FIG. 58 is an enlarged perspective view of the upper portion of the representative filter assembly of FIG. 54 illustrating the insertion of the representative replaceable filter cartridge into the central aperture formed in the intermediate support flange;
• FIG. 60 is an enlarged perspective view of the upper portion of the representative filter assembly of FIG. 54 having a portion of the head portion and of the valve member cut away for ease of illustration, wherein the valve member is in the
• FIG. 65 is a perspective view of another filter assembly constructed in accordance with a representative preferred embodiment of the present disclosure, which includes a novel rotary valve assembly;
• FIG. 68 is a perspective view, in partial cross-section, of the filter assembly of
• FIG. 65 illustrating the position of the valve member and associated seal when the valve member is in a filter mode, wherein the untreated and treated fluid steams flowing through the inlet and outlet paths of the valve member are sealing isolated from one another;
• Filter assembly 10 is configured for use in conjunction with a fluid processing system that includes an inlet conduit 12 for delivering unfiltered process fluid into the filter assembly and an outlet conduit 14 for delivering filtered process fluid from the filter assembly 10.
• Filter assembly 10 is preferably mounted to a supporting structure associated with the fluid processing system by a bracket 16.
• filter assembly 10 further includes a replaceable filter cartridge 40 constructed in accordance with a preferred representative embodiment of the present disclosure.
• Filter assembly 10 is adapted and configured to ensure that replacement cartridge 40 is compatible with the fluid processing system with which it is associated.
• the filter cartridge 40 and valve portion 26 are provided with keyed mating structures that ensure compatibility therebetween, and thus prevent the accidental or intentional installation of an incompatible or inferior replacement cartridge, which could jeopardize the integrity of the fluid processing system.
• replaceable filter cartridge 40 includes a generally cylindrical body portion 42 enclosing filter media for filtering process fluid.
• support flange 70 further includes a. recessed seating area 76 defined by annular retaining wall 78 and configured to receive and retain the head portion 20 of filter assembly 10.
• Diametrically opposed arcuate retention ribs 82 and 84 project inwardly from retaining wall 78 to frictionally engage with corresponding ramped engagement struts 92 and 94 that project radially outwardly from the lower region of head portion 20 when the head portion 20 is rotatably engaged within the recessed seating area 76 during assembly.
• Stop surfaces 82a and 84a are associated with retention ribs 82 and 84, respectively, for limiting the movement of head portion 20 within seating area 76.
• the head portion 20 and support flange 70 may be adapted and configured to cooperate and engage with one another in a manner described hereinbelow with respect to filter assembly 800 and illustrated in FIGS. 52-53.
• each cam lug (62, 64) includes three spaced apart teeth (62a-62c, 64a-64c) and each reception area (102, 104) within the valve member 26 includes three corresponding recesses (102a- 102c, 104a- 104c) for accommodating the teeth when the neck portion 46 of cartridge 40 is received by valve member 26.
• valve member 26 is in the "off position to receive the neck portion 46.
• the inlet and outlet orifices 32, 34 of valve member 26 are not aligned with the inlet and outlet ports 42, 44 of head portion 20.
• cam lugs 62 and 64 extend into the corresponding recesses (102a- 102c, 104a- 104c) of recessed areas 102 and 104 and mate therewith.
• cam lugs of a replacement filter cartridge introduced into the system are not configured to mate with the reception areas of the valve member, i.e., if the earn lugs have no keyed surface formation, which may be indicative of an unauthorized after-market filter cartridge, the cam lugs will interfere with and be unable to engage the reception areas in the valve member. Consequently, because the inclined cam surfaces of the cam lugs 62, 64 will be located below the inclined surfaces of the cam ramps 72, 74, the cam lugs will be unable to traverse the cam ramps. As a result, the cam lugs will be unable to effect rotation of the valve member into the "on" position to permit fluid to flow through the assembly. This will ensure replacement cartridge compatibility by preventing the use of inferior or unauthorized replacement filter cartridges.
• the key formation shown in the exemplary representative embodiment of FIGS. 3-11 corresponds to the key formation illustrated in FIG. 22, which is selected from a group of key formations having five available tooth positions.
• the first, fourth and fifth teeth are present, while the second and third teeth are absent.
• the key formation illustrated in FIGS. 3-11, and 22 may be represented by the numerical expression (1, 0, 0, 1, 1).
• FIGS. 2 and 12 A cartridge having a neck portion with diametrically opposed cam lugs that include such a formation referred to herein as a skeleton key formation, is illustrated in FIGS. 2 and 12 and is designated generally by reference numerals 40 and 140 respectively.
• the cam lugs 162 and 164 of filter cartridge 140 includes a skeleton key formation defined by a tooth formation wherein only the first and fifth tooth positions are filled with teeth (i.e., teeth 162a, 162b).
• Xhis skeleton key is represented by the numerical expression (1, 0, 0, 0, 1). It should t>e understood that, in a five position key formation, the first and fifth position will always be filled, and, conversely, the recessed areas of the valve member will always fciave a recess located in the complementary positions.
• Table 2 sets forth the available tooth combinations for the five position key formation associated with the opposed cam lugs 162 and 1 64 of filter cartridge 140 and illustrated in FIGS. 3-11 and 21-27. In total, excluding the skeleton key formation of FIG. 12, there are seven available tooth configurations for a five position key formation.
• Table 1 sets forth the available tooth configurations for the four position key formation associated with the opposed cam lugs 262 and 264 of filter cartridge 240 illustrated in FIGS. 18-20. In total, excluding the skeleton key formation which is not shown and is represented by the numerical expression (1, 0, 0, 1) there are three available tooth configurations for a four position key formation.
• Table 3 sets forth the available tooth configurations for the six position key formation associated with the opposed cam lugs 362 and 364 of replaceable filter cartridge 340 as illustrated in FIGS. 28-41. In total, excluding the skeleton key formation which is not shown and is represented by the numerical expression (1, 0, 0, 0, 0, 1) there are fifteen available tooth configurations for a six position key formation.
• N 2 n'2 -1
• each manufacturer could offer a unique set of replacement filter cartridge, with each cartridge in the set having a different keyed surface formation provided on the camming lugs thereof, for mating with corresponding reception areas in a valve member supported within a particular type of appliance.
• FIGS. 13-17 there are illustrated a series of replacement filter cartridges constructed in accordance with a preferred representative embodiment of the subject disclosure each having a different keyed surface formation associated therewith.
• FIGS. 13, 14, 16 and 17 illustrate filter cartridges 403, 404,
• cam lugs 463, 464, 466 and 467 having keyed surface formations with portions that project both radially outwardly from the lugs as well as in an axial direction.
• cam lug 463 in FIG. 13 includes two teeth 463 a,
• Cam lug 464 in FIG. 14 includes two axially projecting teeth 464a and 464c and one tooth 464b that project both radially and axially.
• FIG. 16 illustrates a cam lug 466 having an enlarged radially and axially projecting tooth 466a and a smaller axially projecting tooth 466b.
• Cam lug 467 in FIG. 17 includes two axially projecting teeth 467a and 467b and the majority of the cam lug itself project radially outwardly from the neck portion of the filter cartridge
• FIG. 15 illustrates another replacement filter cartridge 405 constructed in accordance with a preferred representative embodiment of the subject disclosure wherein the keyed surface formation provided on the cam lug 465 thereof is defined by a curved surface 465a.
• a compatible valve member for filter cartridge 405 would have reception areas with corresponding curved recesses to ensure compatibility with cartridge 405.
• Filter assembly 700 includes a head portion 720 enclosing a rotary valve member 726 that has a mechanism for minimizing leakage during cartridge replacement.
• the mechanism includes a floating check-ball 728 and an associated valve seat 730.
• FIG. 51 during normal service, when process fluid is flowing through the system, the outlet flow pressure of the filtered fluid causes the check-ball 728 to remain in an unseated position.
• filter assembly 800 differs from the previously described representative embodiments of the subject disclosure in that the assembly does not include a rotary valve member, such as the valve member 18 of filter assembly 10. Instead, as best seen in FIG. 53, filter assembly 800 includes a head portion 820 with an interior bore 825 having a lower region 825a configured to support an annular insert in the form of a key ring 818. Key ring 818 defines diametrically opposed reception areas 802, 804 for mating with corresponding keyed surface formations on the cam lugs 62, 64 formed on the neck portion 26 of a replacement filter cartridge 40, for example. In accordance with the subject disclosure, to ensure the integrity of the system with which filter assembly 800 is associated, a compatible replacement cartridge must have cam lugs with keyed surface formations that mate with the recessed areas of the key ring 818.
• head portion 820 includes a pair of diametrically opposed ramped cam struts 882 and 884 for operatively engaging a pair of diametrically opposed retention flanges 892 and 894 projecting radially inwardly from the retaining wall 878.
• ratchet nibs 882a and 884a project outwardly from the lower region of head portion 820 for engagement within corresponding notches
• the filter cartridge 40 is rotated through an arc of approximately 90°, such that the inclined lower surfaces of cam lugs 62, 64 translate relative to cam ramps 872, 874.
• This relative movement causes the key ring 818 to rotate within interior bore region 825a and causes the neck portion 46 of filter cartridge 40 to move axially into the upper region 825b of the interior bore 825 of head portion 820, until such time as the neck portion of the filter cartridge is sealingly received therein.
• filter assembly 900 is configured for use in conjunction with a fluid processing system that includes an inlet conduit 912 for delivering unfiltered process fluid into the filter assembly and an outlet conduit 914 for delivering filtered process fluid from the filter assembly 900.
• Filter assembly 900 is preferably mounted to a supporting structure associated with the fluid processing system by a bracket 916.
• Valve member 926 includes an inlet orifice 932 for communicating with the inlet port 922 of head portion 920 and an outlet orifice 934 for communicating with the outlet port 924 of head portion 920.
• the body of valve member S26 includes a recess 931a, shown in FIG. 61, surrounding the inlet orifice 932 for accommodating an O-ring seal 931, also shown in FIG. 61, which serves to facilitate fluid-tight junction of the inlet orifice 932 and the inlet port 922.
• the valve member 926 also has a recess 933a surrounding the outlet orifice 934 for accommodating an O-ring seal 933, shown in FIG.
• the body of the valve member 926 further includes a recess 938a for accommodating an O-ring seal 938 (See FIGS. 61-64).
• the O-ring seal 938 serves to facilitate sealing engagement of the valve member 926 within the interior chamber of head portion 920 and to prevent leakage of the process fluid to atmosphere.
• a second lower O-ring seal 958 is positioned below the inlet of the radial passages 952 to sealingly engage the neck portion 946 within the interior chamber of the valve member 926 and prevent the leakage of unfiltered process fluids from filter assembly 900 while in operation.
• annular retaining wall 978 of support flange 970 may be also configured to accommodate and support a shroud (not shown), such as the shroud 90, for housing and protecting the rotary valve assembly 918 of filter assembly 900.
• a shroud such as the shroud 90
• cam lugs 962 and 964 See FIGS. 54 and 56
• cam lugs 962 and 964 may be adapted and configured for reception within a pair of corresponding diametrically opposed reception areas 1002 and 1004, best shown in FIG. 57, formed within the interior cavity 925 of valve member 926.
• valve member 926 This mating arrangement is designed to ensure replacement cartridge's compatibility by only permitting replacement of a filter cartridge having a keyed surface formation that corresponds to the surface features of the reception areas in the valve member.
• valve member 926 should be in the bypass position to receive the neck portion 946 (See FIG. 60). In that position, the inlet and outlet orifices 932, 934 of valve member 926 are not aligned with the inlet and outlet ports 922, 924 of head portion 920. In that configuration, the process fluid entering the inlet port 922 flows into the interior chamber of the head portion 920 and around the outer surface of the valve member 926. Sealing engagement of the valve member 92.6 within the head portion 920, e.g., facilitated by the O-ring seal 938, prevents leakage of the process fluid flowing around the valve member 926 into atmosphere.
• valve member 926 is rotated into the "on" or open position, wherein the inlet and outlet orifices 932, 934 of the valve member 926 are aligned with the inlet and outlet ports 922, 924, respectively, of head portion 920 to allow fluid to flow through the filter assembly 900.
• FIG. 61 illustrates an assembled filter assembly according to an exemplary preferred representative embodiment of the subject disclosure, wherein filter cartridge 940 is engaged with support flange 970 and valve member 926 is in the open position.
• filter assembly 1100 includes a head member 1118 having an inlet passage 1120 and an outlet passage 1122.
• a connector 1124 is provided at the terminal end of inlet conduit 1112 for operative engagement with the inlet passage 1120 of head member 1118
• a connector 1126 is provided at the terminal end of outlet conduit 1114 for operative engagement with the outlet passage 1122 of head member 1118.
• Head member 1118 includes opposed arcuate camming ramps 1128a, 1128b, which cooperate with corresponding ramped camming surfaces defined within an engagement aperture 1130 formed in the mounting bracket 1116 supporting filter assembly 1110. In use, rotation of head member 1118 relative to aperture 1130 facilitates cooperative interaction between the camming ramps and camming surfaces to releasably engage or otherwise mount the head member 1118 to bracket 1116.
• Filter assembly 1100 further includes a valve member 1132, which is accommodated within a valve chamber 1134 formed within head member 1118 (see
• Valve member 1 132 is adapted and confignred for rotation within valve chamber 1134 between a filter mode/position (FIGS. 68 and 69) wherein untreated fluid is directed into the filter cartridge 1115 and a bypass mode/position
• Valve member 1132 includes an inlet path 1136 and an outlet path 1138.
• the inlet path 1136 of valve member 1132 communicates with the inlet passage 1120 of head member 1118
• the outlet path 1138 of valve member 1132 communicates with the outlet passage 1122 of head member 1118.
• fluid may flow to and from the filter cartridge 1115, as discussed in more detail '0 below.
• the bypass mode which is attained when the valve member
• the replaceable filter cartridge 11 15 includes a generally cylindrical sump 1150, which is dimensioned and configured to support a filter element 1152.
• filter element 1152 is an extruded carbon block element.
• other types of filter elements can be employed without departing from the spirit or scope of the subject disclosure.
• a pleated filter element or a spiral wound filter element can be employed.
• the cartridge 1115 need not take the form of a filter, but in the alternative it can take the form of a cartridge for providing an additive to a fluid stream or for otherwise conditioning a fluid steam.
• Filter element 1152 has a central bore 1153, into which processed fluid flows.
• a closed or blind end cap 1154 is positioned at the bottom end of filter element 1152 and an open end cap 1156 is positioned at the top end of filter element 1152.
• a freeze protection pad 1157 formed from a closed sell foam material is associated with end cap 1154.
• Neck portion 1160 includes a base portion 1162 from which extends the neck portion 1135 of filter cartridge 1115.
• Neck portion 1135 has a stepped construction defined by a lower, radially outer neck portion 1135a and an upper, radially inner neck portion 1135b.
• An outer O-ring seal 1137a surrounds the outer neck portion 1135a and an inner O-ring seal 1137b surrounds the inner neck portion 1135b.
• a fluid inlet 1164 is formed between the outer neck portion 1135a and the inner neck portion 1135b. Fluid inlet 1164 delivers untreated fluid into the interior of sump 1150.
• a fluid outlet 1166 is defined by the inner neck portion 1135b. Fluid outlet 1166 delivers treated fluid from the central bore 1153 of filter element 1152 by way of the outlet tube 1158 of end cap 1156.
• the untreated fluid then flows through the communicating inlet path 1136 of valve member 1132 and into the inlet 1164 in the neck portion 1135a of filter cartridge 1115.
• untreated fluid fills the sump 1150 of filter cartridge 1115 and flows radially inwardly through the carbon block filter element 1152 to the central bore 1154.
• Filtered fluid then flows from central bore 1154 of the filter element 1152, through the outlet tube 1158, to the outlet 1166 in the neck portion 1135b of filter cartridge 1115.
• the filtered fluid then flows through the outlet path 1138 of valve member 1132, into the communicating outlet passage 1122 of head member 1118, and exits the filter assembly 1100 by way of outlet conduit 1114.
• the first seal portion 1140a of seal member 1140 sealingly isolates the inlet path 1136 of the valve member 1132
• the second seal portion 1140b of seal member 1140 sealingly isolate the outlet path 1 138 of the valve member 1132.
• valve member 1132 (accompanied by filter cartridge 1 115) is rotated into or otherwise disposed in the bypass position within the valve chamber 1134 of head member 1118, untreated fluid is prevented or otherwise blocked from flowing from the inlet passage 1120 of head member 1118 to the inlet path 1136 of valve member 1132.
• the outlet path 1138 of valve member 1132 is moved out of communication with the outlet passage 1122 of head member 1118.
• the third and fourth seal portions 1140c, 1140d of seal member 1140 sealingly isolate the inlet and outlet passages 1120, 1122 of head member 1118 from the atmosphere.
• a flow path is provided between the inlet and outlet passage 1120, 1122 of head member 1118, which permits untreated process fluid to flow therebetween. At such as time, the replaceable filter cartridge 1115 can be removed from the valve member 1132 without loss of process fluid.

Landscapes

• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
• Separation Using Semi-Permeable Membranes (AREA)
• Water Treatment By Sorption (AREA)
• Filtering Of Dispersed Particles In Gases (AREA)
• Filtration Of Liquid (AREA)
• Sliding Valves (AREA)
• Preventing Unauthorised Actuation Of Valves (AREA)
• Details Of Valves (AREA)

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Cited By (16)

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Citations (2)

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• 2004
  • 2004-10-29 US US10/976,571 patent/US7407148B2/en not_active Expired - Lifetime
• 2005
  • 2005-10-27 EP EP05815356A patent/EP1824577B1/en not_active Expired - Lifetime
  • 2005-10-27 WO PCT/US2005/038964 patent/WO2006050114A1/en not_active Ceased
  • 2005-10-27 AU AU2005302492A patent/AU2005302492A1/en not_active Abandoned
  • 2005-10-27 MX MX2007004907A patent/MX2007004907A/es not_active Application Discontinuation
  • 2005-10-27 KR KR1020077011958A patent/KR101278401B1/ko not_active Expired - Fee Related
  • 2005-10-27 JP JP2007539175A patent/JP2008519212A/ja active Pending
  • 2005-10-27 BR BRPI0518065-1A patent/BRPI0518065A/pt not_active IP Right Cessation
  • 2005-10-27 CN CN200580037543XA patent/CN101052451B/zh not_active Expired - Lifetime
  • 2005-10-27 DE DE602005014379T patent/DE602005014379D1/de not_active Expired - Lifetime
  • 2005-10-27 AT AT05815356T patent/ATE430612T1/de not_active IP Right Cessation

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