WO2003053538A1 - Filter assemblies - Google Patents

Filter assemblies Download PDF

Info

Publication number
WO2003053538A1
WO2003053538A1 PCT/GB2002/005574 GB0205574W WO03053538A1 WO 2003053538 A1 WO2003053538 A1 WO 2003053538A1 GB 0205574 W GB0205574 W GB 0205574W WO 03053538 A1 WO03053538 A1 WO 03053538A1
Authority
WO
WIPO (PCT)
Prior art keywords
adaptor
filter
groove
annular
annular body
Prior art date
Application number
PCT/GB2002/005574
Other languages
French (fr)
Inventor
Richard Guy Gutman
Kenneth Roy Weight
George Brandwood Peacock
Nicholas Lloyd Yoward
Michael Ernest Grimes
Original Assignee
Pall Corporation
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 Pall Corporation filed Critical Pall Corporation
Priority to JP2003554293A priority Critical patent/JP4171701B2/en
Priority to DE60222297T priority patent/DE60222297T2/en
Priority to EP02788084A priority patent/EP1453586B1/en
Priority to AU2002352364A priority patent/AU2002352364A1/en
Priority to US10/498,378 priority patent/US7909175B2/en
Priority to CA002459576A priority patent/CA2459576A1/en
Publication of WO2003053538A1 publication Critical patent/WO2003053538A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/15—Supported filter elements arranged for inward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/04—Supports for the filtering elements
    • B01D2201/043—Filter tubes connected to plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/29—Filter cartridge constructions
    • B01D2201/291—End caps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/30—Filter housing constructions
    • B01D2201/301—Details of removable closures, lids, caps, filter heads
    • B01D2201/304—Seals or gaskets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/34—Seals or gaskets for filtering elements

Definitions

  • the invention relates to filter assemblies and to adaptors for mounting a filter in a
  • One form of adaptor is used with a filter of the kind defining a path for fluid passing
  • the adaptor includes an annular body which provides a
  • Such adaptors are normally made from a plastics material and in
  • the adaptor needs a required thickness.
  • a filter comprising an annular body and a connector for connecting the adaptor to a
  • the annular body including radially inner and outer surfaces, one surface being
  • annular reinforcing member formed with a groove for receiving a sealing ring, an annular reinforcing member
  • annular reinforcing member at the surface allows the thickness of the annular reinforcing member
  • FIG. 1 schematic cross-sectional view of a filter assembly including a filter and an adaptor
  • the filter assembly comprises a filter 10, and an adaptor 11
  • the filter 10 may be one of a
  • the filter 10 includes a filter material 13 which may be of pleated membrane material
  • the filter material may be a depth filter material or any other suitable form of filter material.
  • filter material 13 is provided with an upstream drainage layer 14 and a downstream
  • the filter 10 has a first annular end 16 and a second annular end
  • the first end 16 of the filter 10 is closed by a first end cap 19 which also closes the
  • the second end 17 of the filter 10 is closed by a second annular end cap
  • the first and second end caps 19,20 may be
  • the adaptor 11 comprises an annular body 21 formed from a plastics material and
  • annular connector 22 which connects the annular body
  • the annular body includes an annular inner surface 23
  • the outer surface 24 is formed with first and second
  • the first groove 25 is generally U-shaped and is formed from the first groove 25
  • the first groove 25 contains a first sealing ring 30 of an elastomeric
  • the second groove 26 is formed by the annular body 21 and an annular reinforcing
  • the reinforcing ring 31 which may be
  • the second groove 26 has a first side wall 35 formed in the
  • annular body and a base 36 extending from the first side wall 35 to the end wall 34.
  • the outer end of the radially extending portion 33 of the reinforcing ring 31 extends
  • second groove 26 contains a second sealing ring 37 of an elastomeric material.
  • the annular body 21 is formed by moulding. In order to mould the first groove 25,
  • the second groove 26 can be moulded without the use of
  • the adaptor 11 is used to mount the filter 10 in a mounting plate 12 which is formed
  • fluid to be filtered passes from the radially outer surface of the filter 10
  • annular body 21 of the adaptor 11 which forms a continuation of the passage 18.
  • adaptor 11 may be used with filters other than the filters
  • reinforcing ring 31 is described above as being made of metal; it could be made of any suitably stiff
  • sealing rings 30,37 are shown on the outer surface 24 and the reinforcing
  • sealing rings 30,37 being on the inner surface 23 and the reinforcing ring 31 on the
  • the mounting plate 12 would be replaced by a tube (not shown).

Abstract

A filter assembly comprises a filter (10) defining path for fluid passing to or from the filter (10). An adaptor (11) is connected to the filter (10) and provides a continuation of the path. The adaptor (11) is for mounting the filter (10) on a mounting plate (12) and carries one or more sealing rings (30, 37) that are engageable with the mounting plate (12). The adaptor (11) is made from a plastics material and one surface of the adaptor (11) is reinforced by contact with an annular reinforcing member (31) which may be of metal, particularly steel. This allows the flow path provided by the adaptor (11) to be maximized.

Description

FILTER ASSEMBLIES
The invention relates to filter assemblies and to adaptors for mounting a filter in a
filter assembly.
One form of adaptor is used with a filter of the kind defining a path for fluid passing
to or from the filter. The adaptor includes an annular body which provides a
continuation of said path and which is used for mounting the filter on, for example,
a mounting plate. Such adaptors are normally made from a plastics material and in
order to provide them with sufficient strength, the adaptor needs a required thickness.
This limits the diameter of the path defined by the adaptor and this may reduce flow
through the filter disadvantageously.
According to a first aspect of the invention, there is provided an adaptor for mounting
a filter comprising an annular body and a connector for connecting the adaptor to a
filter, the annular body including radially inner and outer surfaces, one surface being
formed with a groove for receiving a sealing ring, an annular reinforcing member
reinforcing the other surface and an annular portion of said groove.
The use of an annular reinforcing member at the surface allows the thickness of the
adaptor to be reduced and so maximizes the flow path. According to a second aspect of the invention, there is provided a filter assembly
comprising a filter defining a path for fluid passing to or from the filter, an adaptor
according to the first aspect of the invention being connected to said filter by said
connector and providing a continuation of said path.
The following is a more detailed description of an embodiment of the invention, by
way of example, reference being made to the accompanying drawing which is a
schematic cross-sectional view of a filter assembly including a filter and an adaptor
with the filter assembly being mounted on a mounting plate.
Referring to the drawing, the filter assembly comprises a filter 10, and an adaptor 11
which together are carried by a mounting plate 12. The filter 10 may be one of a
plurality of filters carried by the mounting plate 12.
The filter 10 includes a filter material 13 which may be of pleated membrane material
or may be a depth filter material or any other suitable form of filter material. The
filter material 13 is provided with an upstream drainage layer 14 and a downstream
drainage layer 15. The filter 10 has a first annular end 16 and a second annular end
17 and defines a central cylindrical passage 18 which provides a path for fluid to or
from the filter material 13. The first end 16 of the filter 10 is closed by a first end cap 19 which also closes the
passage 18. The second end 17 of the filter 10 is closed by a second annular end cap
20 which leaves the passage 18 open. The first and second end caps 19,20 may be
formed from a plastics material. They may be connected to the remainder of the filter
10 by gluing or welding or any other suitable process.
The adaptor 11 comprises an annular body 21 formed from a plastics material and
provided at one end with an annular connector 22 which connects the annular body
21 to the second end cap 20. The annular body includes an annular inner surface 23
and an annular outer surface 24. The outer surface 24 is formed with first and second
grooves 25,26. The first groove 25 is generally U-shaped and is formed from the
material of the annular body 21 with first and second side walls 27,28 interconnected
by a base 29. The first groove 25 contains a first sealing ring 30 of an elastomeric
material.
The second groove 26 is formed by the annular body 21 and an annular reinforcing
ring 31 of generally L-shaped cross-section. The reinforcing ring 31 , which may be
of a metal such as steel, has an axially extending portion 32 that overlies and contacts
the inner surface 23 of the inner body 21 and a radially extending portion 33 that
extends across an end wall 34 of the annular body 21. The reinforcing ring 31 is thus
located on the inner surface 23 so that the reinforcing ring 31 reinforces the inner
surface 23 and the annular body 21 particularly against forces acting on the annular body in a radial direction. The second groove 26 has a first side wall 35 formed in the
annular body and a base 36 extending from the first side wall 35 to the end wall 34.
The outer end of the radially extending portion 33 of the reinforcing ring 31 extends
beyond the end wall 34 to form the second side wall of the second groove 26. The
second groove 26 contains a second sealing ring 37 of an elastomeric material.
The advantage of forming the second groove 26 in this way is as follows.
The annular body 21 is formed by moulding. In order to mould the first groove 25,
it is necessary to use split mould tools. Where these tools meet at the base 29 of the
first groove 25, there will be a raised split line. This split line can lift the associated
sealing ring 30 and provide a leakage path past the annular body 21. This can be
overcome by forming the first groove 25 by machining rather than moulding or by
forming the annular body from two or more parts, but these solutions are time
consuming and expensive. The second groove 26 can be moulded without the use of
a split tool because the first side wall 35 and the base 36 open on to the end wall 34
of the annular body 21. Accordingly, there is no possibility of a raised rib and thus
the second sealing ring 37 will bear reliably against the base 36 and the first side wall
35 so preventing the possibility of a leakage path. Thus, although there might be a
leakage path through the first group 25 caused by a rib, there will not be such a
leakage path through the second groove 26. The adaptor 11 is used to mount the filter 10 in a mounting plate 12 which is formed
with a plurality of cylindrical apertures one of which is shown at 38. The aperture 38
is sized so that the outer surface 24 of the adaptor 11 is a close fit in the aperture 38,
as seen in the Figure. In this position, the first and second sealing rings 30,37 seal
against the aperture 38 to prevent the passage of fluid therebetween.
In use, fluid to be filtered passes from the radially outer surface of the filter 10
through the filter material 13 to the passage 18 after which it passes through the
annular body 21 of the adaptor 11 which forms a continuation of the passage 18. Of
course, the flow could be in the opposite direction.
The presence of the reinforcing ring 31 strengthens the adaptor particularly against
forces acting in a radial direction and allows the thickness of the annular body 21 to
be a minimum so allowing the diameter of the inner surface 23 of the annular body 21
to be a maximum. This in turn ensures that the adaptor 11 provides a minimum
constriction on the flow of fluid from the filter 10. It also reduces the flexibility of the
adaptor so ensuring that the first and second sealing rings 30,37 are reliably engaged
with the aperture 38 in the mounting plate 12.
It will be appreciated that the adaptor 11 may be used with filters other than the filters
of the kind described above. There need not be two sealing rings; there could be one
sealing ring or three sealing rings or more sealing rings. Although the reinforcing ring 31 is described above as being made of metal; it could be made of any suitably stiff
material.
Although the sealing rings 30,37 are shown on the outer surface 24 and the reinforcing
ring 31 is shown as engaging the inner surface 23, the positions could be reversed with
the sealing rings 30,37 being on the inner surface 23 and the reinforcing ring 31 on the
outer surface 24. In this case, the mounting plate 12 would be replaced by a tube (not
shown).

Claims

1. An adaptor for mounting a filter comprising an annular body (21) and a
connector (22) for connecting the adaptor (11) to a filter (10), the annular body (21)
including radially inner and outer surfaces (23,24), one surface being formed with a
groove (26) for receiving a sealing ring (30,37), an annular reinforcing member (31)
reinforcing the other surface and an annular portion of said groove (25,26).
2. An adaptor according to claim 1 wherein said inner and outer surfaces
(23,24) are cylindrical surfaces co-axial with the axis of the annular body (21).
3. An adaptor according to claim 1 or claim 2 wherein the groove (25,26) is
formed on the radially outer surface (24).
4. An adaptor according to any one of claims 1 to 3 wherein the groove (26)
is generally U-shaped with generally parallel first and second side walls (35)
interconnected by a base (36), said second side wall being formed by said reinforcing
member (31).
5. An adaptor according to claim 4 wherein the reinforcing member (31)
comprises a first portion (32) overlying the associated surface of the annular body (21) and a radially extending flange (33), the radially extending flange (33) forming
said second side wall.
6. An adaptor according to claim 4 or claim 5 wherein the adaptor (11)
includes an end wall extending between said inner surface (23) and said outer surface
(24), the base (36) of the groove (26) extending from said end wall and the
reinforcing member (31) projecting beyond said end wall to form said second side
wall.
7. An adaptor according to any one of claims 1 to 6 and including at least one
further groove (25).
8. An adaptor according to any one of claims 1 to 7 wherein the or each
groove (25,26) contains an associated sealing ring (30,37).
9. An adaptor according to any one of claims 1 to 8 wherein the annular body
(21) is formed from a plastics material.
10. An adaptor according to any one of claims 1 to 9 wherein the reinforcing
member (31) is of metal, preferably steel.
11. A filter assembly comprising a filter (10) defining a path for fluid passing
to or from the filter, an adaptor (11) according to any one of claims 1 to 11 being
connected to said filter (10) by said connector and providing a continuation of said
path.
12. A filter assembly according to claim 11 wherein the filter (10) is annular
with first and second ends, the adaptor (11) being connected to one of said ends.
13. A filter assembly according to claim 12 wherein said one of said ends is
closed by an end cap (20), the adaptor (11) being connected to said end cap (20).
14. A filter assembly according to any one of claims 11 to 13 and further
including a mounting plate (12) having an aperture (38), the groove (26) including a
sealing ring (37) sealingly engaging said aperture (38).
15. A filter assembly according to claim 14 where the annular body (21) is in
accordance with claim 3, wherein the aperture (38) comprises an annular passage
having an annular inner surface, the sealing ring (37) sealingly engaging said inner
surface.
PCT/GB2002/005574 2001-12-13 2002-12-10 Filter assemblies WO2003053538A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2003554293A JP4171701B2 (en) 2001-12-13 2002-12-10 Filter assembly
DE60222297T DE60222297T2 (en) 2001-12-13 2002-12-10 FILTER ADAPTER
EP02788084A EP1453586B1 (en) 2001-12-13 2002-12-10 Filter adapter
AU2002352364A AU2002352364A1 (en) 2001-12-13 2002-12-10 Filter assemblies
US10/498,378 US7909175B2 (en) 2001-12-13 2002-12-10 Filter assemblies
CA002459576A CA2459576A1 (en) 2001-12-13 2002-12-10 Filter assemblies

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0129837A GB2383002B (en) 2001-12-13 2001-12-13 Filter assemblies
GB0129837.1 2001-12-13

Publications (1)

Publication Number Publication Date
WO2003053538A1 true WO2003053538A1 (en) 2003-07-03

Family

ID=9927556

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2002/005574 WO2003053538A1 (en) 2001-12-13 2002-12-10 Filter assemblies

Country Status (9)

Country Link
US (1) US7909175B2 (en)
EP (1) EP1453586B1 (en)
JP (1) JP4171701B2 (en)
AT (1) ATE372157T1 (en)
AU (1) AU2002352364A1 (en)
CA (1) CA2459576A1 (en)
DE (1) DE60222297T2 (en)
GB (1) GB2383002B (en)
WO (1) WO2003053538A1 (en)

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IN159633B (en) 1983-01-06 1987-05-30 Raychem Corp
DE202007014821U1 (en) 2007-10-02 2009-02-26 Mann+Hummel Gmbh Filter element V-seal
DE202007014822U1 (en) * 2007-10-02 2009-02-19 Mann+Hummel Gmbh Filter element Zackendichtung
DE202007013822U1 (en) * 2007-10-02 2009-02-19 Mann+Hummel Gmbh Filter element and filter system
DE102008031170B4 (en) * 2008-07-03 2010-06-17 Sartorius Stedim Biotech Gmbh Adapter for fixing a filter element
US8876168B2 (en) 2010-09-17 2014-11-04 The United States Of America As Represented By The Secretary Of The Navy Adapter ring for pre-filter in chemical, biological and radiological environments
US11235274B2 (en) 2011-06-30 2022-02-01 Donaldson Company, Inc. Filter systems; components; features; and, methods of assembly and use
DE102019108960A1 (en) * 2019-04-05 2020-10-08 Hengst Se Filter with a two-part filter housing and with a filter insert with a seal carrier and filter insert for the filter

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EP0023548A1 (en) * 1979-06-15 1981-02-11 Sartorius GmbH. Multipart filter housing for the incorporation of several cartridge-shaped filter elements
WO1993002765A1 (en) * 1991-08-08 1993-02-18 Steinbeis Gessner Gmbh Connecting adapter for filter candles

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US5024761A (en) * 1990-01-25 1991-06-18 Deibel Richard J High-strength quick-disconnect tube filter
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Publication number Priority date Publication date Assignee Title
DE1198790B (en) * 1963-08-19 1965-08-19 Putsch & Co H Candle filter
EP0023548A1 (en) * 1979-06-15 1981-02-11 Sartorius GmbH. Multipart filter housing for the incorporation of several cartridge-shaped filter elements
WO1993002765A1 (en) * 1991-08-08 1993-02-18 Steinbeis Gessner Gmbh Connecting adapter for filter candles

Also Published As

Publication number Publication date
US7909175B2 (en) 2011-03-22
GB2383002A (en) 2003-06-18
GB2383002B (en) 2004-10-27
GB0129837D0 (en) 2002-01-30
CA2459576A1 (en) 2003-07-03
JP4171701B2 (en) 2008-10-29
US20050173328A1 (en) 2005-08-11
EP1453586B1 (en) 2007-09-05
DE60222297T2 (en) 2008-05-29
DE60222297D1 (en) 2007-10-18
EP1453586A1 (en) 2004-09-08
ATE372157T1 (en) 2007-09-15
JP2005512779A (en) 2005-05-12
AU2002352364A1 (en) 2003-07-09

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