WO2011055149A2 - Ensemble de filtre - Google Patents

Ensemble de filtre Download PDF

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Publication number
WO2011055149A2
WO2011055149A2 PCT/GB2010/051855 GB2010051855W WO2011055149A2 WO 2011055149 A2 WO2011055149 A2 WO 2011055149A2 GB 2010051855 W GB2010051855 W GB 2010051855W WO 2011055149 A2 WO2011055149 A2 WO 2011055149A2
Authority
WO
WIPO (PCT)
Prior art keywords
filter
filter assembly
fluid
outlet
head portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/GB2010/051855
Other languages
English (en)
Other versions
WO2011055149A3 (fr
Inventor
John Marlowe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Magnom Corp Ltd
Original Assignee
Magnom Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Magnom Corp Ltd filed Critical Magnom Corp Ltd
Priority to EP10776803A priority Critical patent/EP2496332A2/fr
Publication of WO2011055149A2 publication Critical patent/WO2011055149A2/fr
Publication of WO2011055149A3 publication Critical patent/WO2011055149A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B01D35/306—Filter mounting adapter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/28—Magnetic plugs and dipsticks
    • B03C1/286—Magnetic plugs and dipsticks disposed at the inner circumference of a recipient, e.g. magnetic drain bolt
    • 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
    • B01D2201/307—Filtering elements contained in an insert body mounted in a filter housing (double casing), e.g. to avoid contamination when removing or replacing the filter element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/18—Magnetic separation whereby the particles are suspended in a liquid

Definitions

  • the present invention relates to filter assemblies, in particular, but not exclusively, to filter assemblies for use in central heating systems and the like.
  • a filter assembly comprising a head portion comprising a housing having inlet means and outlet means for inlet and outlet of fluid respectively; and a filter portion releasably connectable to the head portion and being adapted to receive a flow of fluid from the inlet means and return it to the outlet means.
  • the filter assembly further comprises valve means within the housing displaceabie between a first, closed position, and a second, open position, the filter portion being engageable with the valve means, in which condition the filter portion is displaceabie with respect to the housing of the head portion between a first position in which the filter portion is disconnected from the head portion and disengageable from the valve means and a second position in which the filter portion is connected to the head portion, the displacement of the filter portion between the first and second portions causing the valve means to be displaced between its closed and open positions.
  • the filter portion can be removed and replaced when necessary without having to isolate the flow of fluid and/or disconnect it from the adjoining circuit and reconnect the new filter to the circuit.
  • each of the inlet means and outlet means comprises means for connecting to a pipe e.g. means for effecting a push-fit connection or a threaded connection with a pipe.
  • the valve means is preferably sealed with respect to the housing of the head portion.
  • the valve means may further comprise a bypass inlet port, a bypass outlet port and passage means interconnecting the bypass inlet and outlet ports, the bypass inlet and outlet ports being aligned with, and communicating with, the inlet means and outlet means respectively when the valve means is in the first, closed position.
  • the passageway may be formed, for example, in an upper face of the valve means.
  • the valve means may comprise a valve closure member displaceable through a predetermined angle between its closed and open positions, e.g. through approximately 90°.
  • the head portion further comprises support means on which the valve closure member is mounted.
  • the support means is preferably secured to the housing of the head portion.
  • the support means also preferably extends out of the housing of the head portion. In one embodiment, when the head portion and filter portion are connected, the support means extends into the filter portion.
  • the support means is hollow.
  • the support means preferably communicates with the outlet means when the valve means is in the open position.
  • the support means communicates with the interior of the filter portion.
  • the valve means may, alternatively, be displaceable linearly with respect to the housing between the first and second positions.
  • the filter assembly preferably further comprises interengaging means on the head portion and the filter portion for releasably connecting the head portion and filter portion.
  • the interengaging means may comprise one or more projections on one of the head portion and the filter portion receivable in one or more corresponding recesses on the other of the head portion and the filter portion.
  • the one or more projecting portions may be provided on the head portion.
  • the interengaging means engage with a bayonet-type action.
  • the head portion and the filter portion are releasably connective in a sealing manner.
  • the filter portion comprises one or more projections engageable with the valve means.
  • the filter means preferably comprises a filter housing.
  • the filter assembly preferably comprises a mandrel on which the plurality of filter components are mounted.
  • the mandrel is hollow.
  • the mandrel communicates with the support means of the head portion.
  • the filter portion may comprise magnetic filtration means and/or cyclone means for inducing a helical motion in fluid and or filter screen means.
  • a filter assembly comprising an inlet and an outlet for inlet and outlet of fluid respectively and filter means adapted to receive a flow of fluid from the inlet means and return it to the outlet means, the filter means comprising means for inducing a helical motion of fluid flowing from the inlet to the outlet.
  • the helical motion of fluid causes a "cyclonic" action and results in solid particles being displaced outwardly and removed from the fluid flow.
  • the means for inducing a helical motion of fluid interacts with the flowing fluid to induce the helical motion.
  • the means for inducing a helical motion of fluid is static.
  • the means for inducing a helical motion of fluid comprises a plurality of blades.
  • each of the blades is part-helical in shape.
  • the filter assembly may further comprise a support from which the blades project radially.
  • the blades project radially outwardly.
  • the blades decrease in width along the flow direction of the blades, causing an increase in fluid velocity.
  • the filter assembly may further comprising a housing in which the means for inducing helical motion of fluid is secured.
  • the housing preferably comprises sump means downstream of the means for inducing a helical motion of fluid.
  • the filter assembly may further comprise filter means located downstream of the means for inducing a helical motion of fluid.
  • the filter means located downstream of the means for inducing a helical flow of fluid may comprise barrier filter means.
  • the filter assembly may further comprise filter means secured in the housing upstream of the means for inducing a helical motion of fluid.
  • the filter assembly may further comprise magnetic filter means secured in the housing upstream of the means for inducing a helical motion of fluid.
  • the filter assembly may further comprise a head portion having inlet means and outlet means for inlet and outlet of fluid respectively.
  • the housing is removably securable to the head portion.
  • a filter assembly comprising an inlet and an outlet for inlet and outlet of fluid respectively and filter means adapted to receive a flow of fluid from the inlet means and return it to the outlet means, the filter means comprising magnetic filtration means arranged in series with a barrier filtration means.
  • the magnetic filtration means is able to remove magnetisable particles from the fluid flow without restricting the flow-through of fluid, whereas the barrier filtration means retains non-magnetizable particles from the fluid, thereby resulting in a very efficient filtering process.
  • the filter assembly preferably further comprises a housing in which the filter means is secured.
  • the filter assembly may further comprise a head portion in which the inlet and outlet are provided.
  • the housing is releasably securable to the head portion.
  • Figs. 1 (a), (b) and (c) are, respectively, an exploded perspective view, an end view and a side view of an embodiment of filter assembly in accordance with the present invention
  • Figs. 2(a), (b) and (c) are, respectively, an exploded perspective view, an end view and a side view of a head portion of the filter assembly of Fig. 1 ;
  • Figs. 3(a) and (b) are transverse cross-sections through the head portion of Fig. 2, showing an internal valve in open and closed positions, respectively and Figs. 3(c) is a perspective view from below of the valve closure member shown in Figs. 3(a) and 3(b).
  • Fig. 4 is a longitudinal cross-section through the filter head of Fig. 2, with the valve in a closed position;
  • Fig. 5 is a longitudinal cross-section through a filter bowl which forms part of the filter assembly of Fig. 1 ;
  • Fig. 6 is an an exploded perspective view of the filter bowl of Fig. 5;
  • Figs. 7(a) and (b) are, respectively, an exploded longitudinal cross- section and an exploded side view of the filter bowl of Fig. 5;
  • Figs. 8(a) and (b) are, respectively, a perspective view and a longitudinal cross-section through an annular strainer which forms part of the filter bowl of Fig. 5;
  • Figs. 9(a) and (b) are, respectively, a longitudinal cross-section and a side view of an annular cyclone component which forms part of the filter bowl of Fig. 5;
  • Figs. 1 0(a) and (b) are, respectively, a side view and a longitudinal cross-section through an alternative annular strainer which can be used in the filter bowl of Fig. 5;
  • Figs. 1 1(a) and 11 (b) are transverse cross-sections through a variant of the head portion of the filter assembly of Fig. 2.
  • Figs. 12 is a transverse cross-section through an alternative construction of mandrel which forms part of the filter assembly
  • Figs. 13(a) and 13(b) are an inverted plan view and a perspective view from below respectively of an alternative form of casing which forms part of the head 12;
  • Figs. 14(a) and 14(b) are detail cross-sections explaining the operation of the casing of Fig. 13;
  • Fig, 15 is an exploded perspective view from above of a modification to the embodiment of Fig. 1 ;
  • Fig. 16 is a perspective view from above of the upper portion of the filter bowl shown in the modification of Fig. 15;
  • Fig. 17 is a perspective view from above of the annular valve closure member shown in the modification of Fig. 15.
  • a filter assembly 10 comprises a head 12 to which a filter bowl 14 is releasably attachable.
  • the head 12 is provided with inlet and outlet ports 16, 18, which are adapted to be a push-fit connection with two lengths of fluid conveying pipe (not shown), although other types of connection (e.g. threaded connections) could be used.
  • fluid to be filtered passes into the head 12 via the inlet port 16, is filtered in the filter bowl 14 and passes out of the head 12 via the outlet port 18.
  • the head 12 comprises an outer casing 20 in the general shape of a hollow cylinder closed off at one end by an end wall 22 and having short, diametrically-opposed tubular extensions 24, 26 in which the inlet and outlet ports 16, 18 are formed.
  • An annular valve closure member 28 is rotatably received within the outer casing 20 and is sealed with respect to the inner cylindrical surface of the casing 20 by means of a cage-like seal 30.
  • the seal 30 comprises upper and lower annular sealing members 32, received in corresponding annular recesses 34 in the outer face of the valve closure member 28, and four equally spaced connecting legs 36 extending perpendicularly between and connected to the annular sealing members 32, received in corresponding recesses 38 in the outer face of the valve closure member 28.
  • Fluid inlet and outlet ports 40, 42 are positioned diametrically opposite each other on the valve closure member.
  • the inlet port 40 comprises a recess 40a which communicates with the undersurface of the valve closure member 28 via an arcuate channel 44 passing longitudinally through the valve closure member.
  • the outlet port 44 extends between the radially inner and outer faces of the annular valve closure member.
  • the valve closure member 28 is rotatable through approximately 90° from an "open" position shown in Fig. 3(a), in which the inlet and outlet ports 38, 40 of the valve closure member 28 are aligned with the inlet and outlet ports 16, 18 of the outer casing 20, to a "closed" position shown in Fig.
  • valve closure member in which the inlet and outlet ports 40, 42 are angularly displaced by 90° from the inlet and outlet ports 16, 18 of the outer casing 20.
  • the base of the valve closure member is provided with two identical, diametrically-opposed blind recesses 46, for receipt of actuating pins for rotating the valve closure member, as will be explained.
  • the valve closure member 28 is rotatably mounted on the outer surface of a support collar 48.
  • the support collar 48 has a hollow cylindrical upper portion 50, whose distal end is secured by ultrasonic welding to the undersurface of the end wall 22 of the casing 20, a shoulder portion 52 of larger outer diameter, and which the radially innermost portion of the valve closure member 28 rests and a lower neck portion 54 of smaller diameter than the upper portion 50, which projects, in use, into the filter bowl 14.
  • a circular annular retaining ring 62 is positioned radially outwardly of the shoulder portion 52 of the support collar 48 and is secured to the radially outermost face 64 of the collar by means of two diametrically opposed radial extensions 66 extending between the shoulder portion 52 and the radially innermost face 68 of the ring 62.
  • the radially outermost portion of the upper face of the retaining ring 62 seats against an undercut shoulder 70 in the wall of the outer casing 20.
  • the retaining ring 62 is also provided with a downwardly-depending skirt portion 72 which is shaped complementarily with the inner face of the longitudinally outermost portion of the casing 20 and is secured thereto by ultrasonic welding.
  • the filter bowl 14 comprises a casing 80 having a generally cylindrical side wall 82 which is closed off at its lower end by a domed end wall 84. Received within the casing are, in sequence, an annular mesh barrier strainer 88, an annular cyclone component 90, an annular magnetic filter assembly 92 and an apertured end cap 94, all of which are slidably received on the exterior cylindrical face of a hollow, generally cylindrical mandrel 96. As best seen in Fig.
  • the above components are assembled within the casing 80 and are retained in the casing by crimping or swaging the upper peripheral edge of the cylindrical side wall 82 of the casing into a peripheral groove 102 in the casing formed by the crimping/swaging operation, thus forming a groove in the cylindrical side wall 82 of the casing 80 to receive the seal 100.
  • Part of the inner annular face of each of the components is provided with a flat portion which engages with a longitudinal flat face 97 of the mandrel 96, to prevent relative rotation of the components and the mandrel.
  • the annular strainer 88 comprises a circular planar disc 104 having a central annular collar 106 for receiving one end of the mandrel 96, an outer annular wall 108 of the same height as the central collar 106 located at the periphery of the disc 104 and an intermediate annular wall 1 10, taller than the central collar 106, located coaxially with the locating collar 106 between the collar and the outer wall 108, all extending perpendicularly from the upper face of the disc 104.
  • Three support feet 1 12 extend perpendicularly from the undersurface of the disc 104 and, in use, rest on the inner face of the domed end wall 84, in which position the peripheral edges of the disc 104 and outer annular wall are spaced very slightly from the inner face of the cylindrical side wall 82, as shown in Fig. 5.
  • the annular collar 106 is provided with four identical rectangular, equally spaced rectangular apertures 113 separated by vertical spacers 1 14.
  • the outer and intermediate walls 108, 1 10 are each provided with four identical, equally spaced rectangular apertures or windows 1 15, separated by vertical spacers 1 16, the windows being covered with a sheet 1 18 of woven mesh filter material.
  • the component 90 comprises a central cylindrical annular sleeve 120 which slides over the mandrel 96 and whose lower annular end abuts, when assembled, the upper annular end of the locating collar 106 of the disc 104.
  • the upper end of the annular sleeve 120 is formed into a radially outwardly extending planar annular end wall 122 and a frusto-conical skirt 124 extends downwardly and outwardly from the periphery of the end wall 122.
  • a frusto-conical skirt 124 extends downwardly and outwardly from the periphery of the end wall 122.
  • the outer face of the skirt 124 is provided with twelve identical, equally-spaced, overlapping, part- helical blades 126 (although a different number of blades could be used, if desired ). Since the skirt flares outwardly away from the annular end wall 122, the width of the blades 124 decreases towards the lower end of the skirt 124.
  • each magnetic filter device comprises an annular ferrite magnet 130 having two planar faces of opposite magnetic polarity, against each of which faces a respective one of two identical annular metal plates 132, 134 abuts.
  • the peripheral edge of each of the plates 132, 34 is provided with a plurality of identical, evenly spaced recesses 138, between which are defined a plurality of identical pole pieces 140, the apertures 138 and the pole pieces 140 of the two plates 132, 134 being aligned with each other.
  • the pole pieces 140 of each plate are also aligned slightly towards the pole pieces of the other plate and extend radially outwardly of the annular magnet 130.
  • Opposed pole pieces 140 of the plates 132, 134 define regions of magnetic attraction 142 into which magnitizable materials are attracted and retained. Thus, as fluid flows along the passageways defined between the aligned recesses 1 38 in the plates, magnetisable material is withdrawn from the fluid into the regions of magnetic attraction 142 and are retained in those regions.
  • adjacent devices 128 are preferably (but not necessarily) arranged such that the adjacent poles of their magnets are of the same polarity, and that the recesses 138 and the pole pieces 140 of the devices are all aligned with one another.
  • the apertured end cap 94 comprises an annular base wall 148 whose inner periphery is reinforced to form a collar 150 which is slidable over the mandrel 96.
  • the upper face of the peripheral edge of the base wall is formed into an upwardly extending peripheral annular wall 152 in whose outer face the exterior peripheral groove 98 is formed.
  • the base wall 148 is provided with a plurality of identical, equally angular spaced circular apertures 154.
  • two diametrically opposed elongate pegs 156 extend perpendicularly from the upper face of the wall 148.
  • the pegs are adapted to be releasably received in corresponding identical diametrically opposed recesses in the undersurface of the valve closure member 28.
  • the central portion of the end cap 94 is also provided with a central aperture 158 for receipt of the neck portion 54 of the head 12.
  • the aperture 158 has two diametrically opposed recesses 159 to allow the two pairs 56a, 56b of securing pegs to pass.
  • the upper annular end of the mandrel 96 is provided with a plurality of identical locating pegs 160 which are adapted to be received in corresponding recesses in the undersurface of the reinforced collar portion 50 of the end cap 94.
  • the opposite end of the mandrel 96 is formed into four identical , equally angularly spaced , longitudinally extending feet 162 (although a different number of feet could be used) which, when assembled, abut the upper face of the planar disc 104 of the annular strainer 88, within the central annular collar 106 of the disc 104 and from apertures 162 at the base of the mandrel.
  • the inner wall of the mandrel to also protected with two diametrically opposed, longitudinally extending straight guide recesses 164, aligned with the recesses 159 in the end cap 94, which are adapted to receive the securing pegs 56a, 56b slidably.
  • a first horizontal arcuate recess 166 at the end of each recess 159 and a second recess 168 at a spacing equal to that of the securing pegs 56a, 56b extend perpendicularly from the longitudinal guide recess 164 for a quarter of the circumference of the mandrel.
  • the components of the filter bowl 14 are assembled into a unit as shown in Fig. 5, with the annular strainer 88, annular cyclone component 90, annular magnetic filter assembly 92 and apertured end cap 94 being arranged in series on the mandrel and the whole sub-assembly being located in the casing 80 and securing in place by crimping/swaging the upper peripheral edge of the casing to form the external peripheral groove 98 of the end cap, the O-ring seal then being located in the exterior peripheral groove 98 in the casing formed by the crimping/swaging operation.
  • the filter bowl 14 is then ready for connection to the head 12.
  • the head 12 is adapted to be connected to inlet and outlet pipes (not shown). At the time of installation, care should be taken to ensure that the valve closure member 28 is in the closed position (shown in Fig. 3(b)) in order to prevent leakage when fluid flows through the pipes.
  • the upper end of the assembled filter bowl 14 is then offered to the undersurface of the head 12 and is adjusted so that the securing pegs 56a, 56b projecting from either side of the neck portion 54 of the head 12 are aligned with the recesses 159 in the central aperture 158 of the end cap 94.
  • the pegs 156 projecting from the end of the filter bowl 14 are located one in each of the arcuate recesses between the support collar 48 and the annular retaining ring 62 of the head 12 and are aligned with, but not yet received in, the corresponding apertures 46 in the undersurface of the valve closure member 28.
  • the securing pegs 56a, 56b move along the respective vertical guide recesses 164 until the lowermost pegs 56a reach the lower end of the recesses, at which point the lower and upper pegs 56a, 56b are longitudinally aligned with the arcuate, part-circumferential securing recesses 166, 168 in the mandrel 96.
  • the securing pegs 156 projecting from the end of the filter bowl 14 are received in the corresponding recesses 46 in the undersurface of the valve closure member 28.
  • valve closure member 28 is ro rated form the closed position shown in Fig. 3(b) to the open position shown in Fig. 3(a). Attachment of the filter bowl 14 to the head 12 therefore automatically results in the opening of the valve in the head 12. Conversely, removal of the filter bowl 14 from the head 12 by reversal of the above process ensures that the valve is closed before the filter bowl can be removed.
  • Fluid passing into the head 12 of the filter assembly passes through the inlet port 40 in the valve closure member 28 and passes downwardly through the valve closure member 28 via the arcuate channel 44.
  • the fluid thereby reaches the aperture end cap 94 of the filter bowl and passes through the apertures 154 therein.
  • the fluid then passes to the magnetic filter assembly 92 and flows generally longitudinally through the passageways defined between the aligned recesses in the plates 132, 134 of the filter devices 128.
  • Magnetisable material is attracted from the flowing fluid into the regions of magnetic attraction between opposed pole pieces 140 of the plates 1 32, 1 34 of each filter device, where the magnetisable material is retained and thereby removed from circulation.
  • the fluid flows from the magnetic filter assembly 92 and passes to the annular cyclone component 90.
  • the longitudinal flow of fluid passing from the magnetic filter assembly 92 is converted into a helical flow as it passes over the blades 126.
  • the flow is thereby provided with a radially outward flow component, which is enhanced by the narrowing of the blades 126 towards the lower end of the cyclone component 90.
  • Very fine particles are thereby displaced to the interior of the face of the casing 80 and then pass longitudinally between the outer upstanding wall 108 of the annular strainer 88 and collect in a sump region between the undersurface of the strainer 88 and the darned end wall 84 of the casing.
  • the fluid then flows through the apertures 113 in the central annular collar 106 and through the apertures 163 at the base of the mandrel 96.
  • the fluid flow then continues upwardly through the hollow mandrel and out of the filter bowl via the central aperture 158.
  • the neck portion 54 of the support collar 48 of the head portion 12 is received in the central aperture and thus the fluid flow continues through the cylindrical passage 60 of the support collar and thence through the cross-bore 61 , through the aligned outlet port 42 of the valve closure member 28 and finally out of the filter assembly 10 via the outlet port 18 and into the outlet pipe connected to the outlet port 18.
  • the fluid passing through the filter assembly thereby undergoes a multi-stage filtering process.
  • FIG. 10 A modification to the above embodiment is shown in Fig. 10.
  • the modification replaces the annular strainer 88 with an annular mesh filter 170.
  • the mesh filter comprises an inner annular collar 172 which is received on the lower end of the mandrel 96.
  • the collar 172 merges into a short radially- outwardly extended wall portion 174 which in turn merges with a tubular, annular inner wall 176.
  • the tubular inner wall 176 merges into an upwardly and radially outwardly inclined intermediate wall 178 which reaches a height of approximately % of the inner wall 176 (although this height could be different) which in turn merges with a downwardly and radially outwardly directed intermediate wall 180 which in turn merges with a tubular outer wall 1 82.
  • the construction is therefore of a trough between the inner and outer walls 1 76, 1 82 whose floor is not flat but forms a peak 186, whereby the cross-section of the profile is generally in the form of a "W".
  • the construction of the mesh filter 170 means that it is resiliently deformable and acts as a spring, which allows the component to deform and move when subjected to pressure.
  • the differential pressure causes the inner annular collar 172 to be pushed downwards (as seen in Fig. 10) along the hollow mandrel 96, thereby uncovering the apertures 163 at the base of the mandrel 96, allowing fluid to bypass the blocked mesh filter 170.
  • the mesh filter 170 hinges at the two bases 184 of the trough and the peak 186.
  • Fig. 11 illustrates a variant of the head portion 12 of the filter assembly of Fig. 2.
  • the construction is generally very similar to that of Fig. 2, and corresponding features are given the same reference numeral, with the addition of a dash.
  • the main difference from the arrangement of Fig. 2 is that whereas the valve closure member 28' of the Fig. 2 embodiment is displaceable angularly between its open and closed positions, in the variant of Fig. 11 , the valve closure member 28' is movable linearly, up and down as shown in Fig. 1 1 , between the open and closed positions.
  • valve closure member 28' in Fig. 1 1 is biased by means of spring S downwardly into the closed position in which the inlet and outlet ports 40', 42' are out of alignment with the inlet and outlet ports 16', 8' of the outer casing 20', as shown in Fig. 1 1 (a).
  • the valve closure member 28' is moved upwardly, into the position shown in Fig. 1 1 (b) in which the inlet and outlet ports 40', 42' are aligned with the inlet and outlet portions 16', 18' of the outer casing 20', as the filter bowl (not shown in Fig. 1 1 ) is inserted into the head 2'.
  • Fig. 12 is a transverse cross-section through an alternative construction of mandrel.
  • the mandrel is provided with cut-out portions 190 in the horizontal arcuate recesses 166, 168, so that the pegs 56a, 56b positively engage the mandrel.
  • Figs. 13 and 14 illustrate a further variant and provides timed automatic bleeding of pressure in the filter bowl 14, on removal.
  • the inner face of the end wall 22 of the head 12 is provided with a ramped track 192 which varies in depth from a shallow end 192a to a deeper end 192b.
  • a vent hole 194 is located at the deeper end of the track.
  • the upper face of the valve closure member 28 carries a ball bearing 196 which sits on an O-ring seal 198, the bearing 196 sitting in the ramped track.
  • the ramping in the track either pushes the bearing onto the seal, thus sealing off the unit, or relieves the compression on the bearing, thus unloading the seal and allowing the filter to vent its pressure to atmosphere.
  • Figs. 15 to 17 illustrate a further modification of the arrangement shown in Fig. 1.
  • Many of the features of the arrangement remain unchanged as compared with the Fig. 1 arrangement and corresponding features are given the same reference numerals, with the addition of a double dash (").
  • the outer casing 20 of the head 12 remains unchanged and therefore has not been illustrated, to allow the other components to be viewed.
  • the first significant difference is that the pins 156 projecting upwardly from the filter bowl 14 of Fig.1 and the corresponding recesses 46 in the undersurface of the valve closure member 28 have been omitted.
  • the collar 150 of the filter bowl 14" is also replaced with a toothed or splined annular collar 200, formed into eighteen identical teeth 202.
  • the toothed collar is releasably engageable with a complementarily-shaped recess 204 on the inner face of a downwardly-depending annular cylindrical skirt portion 205 of the valve closure member 28".
  • the valve closure member retains the lower neck portion 54" of the arrangement of Fig.
  • valve closure member 28 is provided with a semicircular groove 206, just inward of the periphery of the valve closure member.
  • a first end 208 of the groove 206 communicates with a filter bypass inlet port 210 in the outer side wall of the valve closure member and the opposite end 212 of the groove 206 communicates with a filter bypass outlet port 214 in the valve closure member, diametrically opposed to the bypass inlet port 210.
  • the inner and outer upper peripheries are also formed into annular ribs 216, 218 which sealingly engage the undersurface of the end wall 22" of the outer casing 20" (preferably by means of annular seal, not shown) and which thereby prevents fluid from entering or leaving the groove other then via the filter bypass inlet and outlet ports 210, 214.
  • the bypass inlet and outlet ports 210, 214 are positioned on the valve closure member 28" so that when the valve closure member 28" is rotated to its closed position as described previously, namely the position in which fluid flow to and from the filter bowl 14" is cut off, to allow the filter bowl to be replaced, the ports 210, 214 are aligned with the inlet port 16 and the outlet port 18 respectively of the head 12. In this position, fluid is allowed to continue to flow through the filter bypass inlet port 210, a passageway formed by the semicircular groove 206 in the upper face of the valve closure member 28" and the undersurface of the end wall 22" of the casing 20", and the filter bypass outlet port 214. Consequently, when the filter bowl 14" is removed for replacement, fluid is still allowed to flow through the system to which the head 12" is attached and there is no need to shut down the system in order to replace the filter.
  • the push-fit connections in the inlet and outlet port may be replaced with threaded connections, welded connections or other types of connections.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

La présente invention concerne un ensemble de filtre qui comprend une partie de tête (12) comprenant un boîtier (20) ayant des moyens d'entrée (16) et des moyens de sortie (18) pour l'entrée et la sortie de fluide respectivement et un filtre (14) raccordable de manière amovible à la partie de tête et étant adapté pour recevoir un flux de fluide depuis les moyens d'entrée et retourner celui-ci vers les moyens de sortie. L'ensemble comprend des moyens de valve (28) dans le boîtier déplaçables entre une première position fermée, et une deuxième position ouverte. La partie de filtre (14) peut être engagée avec les moyens de valve (28), auquel cas la partie de filtre est déplaçable par rapport au boîtier (20) de la partie de tête entre une première position dans laquelle la partie de filtre (14) est déconnectée de la partie de tête et désengageable des moyens de valve (28) et une deuxième position dans laquelle la partie de filtre (14) est raccordée à la partie de tête (12). Le déplacement de la partie de filtre (14) entre les première et deuxième parties amène les moyens de valve (28) à être déplacés entre leurs positions fermée et ouverte.
PCT/GB2010/051855 2009-11-06 2010-11-08 Ensemble de filtre Ceased WO2011055149A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10776803A EP2496332A2 (fr) 2009-11-06 2010-11-08 Dispositif de filtration

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0919485.3A GB0919485D0 (en) 2009-11-06 2009-11-06 Filter assembly
GB0919485.3 2009-11-06

Publications (2)

Publication Number Publication Date
WO2011055149A2 true WO2011055149A2 (fr) 2011-05-12
WO2011055149A3 WO2011055149A3 (fr) 2011-07-07

Family

ID=41502009

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2010/051855 Ceased WO2011055149A2 (fr) 2009-11-06 2010-11-08 Ensemble de filtre

Country Status (3)

Country Link
EP (1) EP2496332A2 (fr)
GB (1) GB0919485D0 (fr)
WO (1) WO2011055149A2 (fr)

Cited By (7)

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Publication number Priority date Publication date Assignee Title
WO2019029899A1 (fr) * 2017-08-10 2019-02-14 Adey Holdings (2008) Limited Filtre magnétique pour système de chauffage central
RU2702030C2 (ru) * 2015-04-09 2019-10-03 Эди Холдингз (2008) Лимитед Магнитный фильтр со сливом и съемным внешним магнитным элементом
IT201800010324A1 (it) * 2018-11-14 2020-05-14 Ivar Spa Dispositivo e metodo per la filtrazione di un fluido circolante in un impianto termoidraulico
GB2590872A (en) * 2017-08-10 2021-07-07 Adey Holdings 2008 Ltd Magnetic filter for a central heating system
DE102020200588A1 (de) 2020-01-20 2021-07-22 Robert Bosch Gesellschaft mit beschränkter Haftung Flüssigkeitsfilter
CN114980992A (zh) * 2020-01-17 2022-08-30 沃尔沃卡车集团 配备有防泄漏阀的液体过滤器
WO2023275596A1 (fr) * 2021-06-30 2023-01-05 Caleffi S.P.A. Dispositif de capture et d'élimination de particules

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WO1997004873A1 (fr) 1995-07-26 1997-02-13 Marlowe, John Dispositif de filtration magnetique
WO1999058247A1 (fr) 1998-05-08 1999-11-18 John Marlowe Systeme de filtration magnetique

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2702030C2 (ru) * 2015-04-09 2019-10-03 Эди Холдингз (2008) Лимитед Магнитный фильтр со сливом и съемным внешним магнитным элементом
GB2590872B (en) * 2017-08-10 2022-03-30 Adey Holdings 2008 Ltd Magnetic filter for a central heating system
CN109381914A (zh) * 2017-08-10 2019-02-26 阿迪控股(2008)有限公司 中央供热系统的磁性过滤器
US11517916B2 (en) 2017-08-10 2022-12-06 Adey Holdings (2008) Limited Magnetic filter for a central heating system
WO2019029899A1 (fr) * 2017-08-10 2019-02-14 Adey Holdings (2008) Limited Filtre magnétique pour système de chauffage central
CN111201402A (zh) * 2017-08-10 2020-05-26 阿迪控股(2008)有限公司 中央供热系统的磁过滤器
GB2565321B (en) * 2017-08-10 2021-06-02 Adey Holdings 2008 Ltd Magnetic filter for a central heating system
GB2590872A (en) * 2017-08-10 2021-07-07 Adey Holdings 2008 Ltd Magnetic filter for a central heating system
WO2020099972A1 (fr) * 2018-11-14 2020-05-22 I.V.A.R. S.P.A. Dispositif et procédé de filtration d'un fluide circulant dans un système de plomberie et de chauffage
CN113165919A (zh) * 2018-11-14 2021-07-23 I.V.A.R.股份有限公司 用于过滤管道及加热系统中循环的流体的装置和方法
IT201800010324A1 (it) * 2018-11-14 2020-05-14 Ivar Spa Dispositivo e metodo per la filtrazione di un fluido circolante in un impianto termoidraulico
CN113165919B (zh) * 2018-11-14 2024-05-10 I.V.A.R.股份有限公司 用于过滤管道及加热系统中循环的流体的装置和方法
US12370476B2 (en) 2018-11-14 2025-07-29 I.V.A.R. S.P.A. Device and method for filtering a fluid circulating in a plumbing and heating system
CN114980992A (zh) * 2020-01-17 2022-08-30 沃尔沃卡车集团 配备有防泄漏阀的液体过滤器
US12533611B2 (en) 2020-01-17 2026-01-27 Volvo Truck Corporation Liquid filter equipped with an anti-leakage valve
DE102020200588A1 (de) 2020-01-20 2021-07-22 Robert Bosch Gesellschaft mit beschränkter Haftung Flüssigkeitsfilter
WO2023275596A1 (fr) * 2021-06-30 2023-01-05 Caleffi S.P.A. Dispositif de capture et d'élimination de particules

Also Published As

Publication number Publication date
EP2496332A2 (fr) 2012-09-12
GB0919485D0 (en) 2009-12-23
WO2011055149A3 (fr) 2011-07-07

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