EP2523740A1 - Sealed filter - Google Patents

Sealed filter

Info

Publication number
EP2523740A1
EP2523740A1 EP11703022A EP11703022A EP2523740A1 EP 2523740 A1 EP2523740 A1 EP 2523740A1 EP 11703022 A EP11703022 A EP 11703022A EP 11703022 A EP11703022 A EP 11703022A EP 2523740 A1 EP2523740 A1 EP 2523740A1
Authority
EP
European Patent Office
Prior art keywords
nipple
filter
filter element
slot
cylindrical
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.)
Withdrawn
Application number
EP11703022A
Other languages
German (de)
French (fr)
Inventor
Timo Kela
Antti Sorri
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.)
Parker Hannifin Manufacturing Finland Oy
Original Assignee
Parker Hannifin Oy
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 Parker Hannifin Oy filed Critical Parker Hannifin Oy
Publication of EP2523740A1 publication Critical patent/EP2523740A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D27/00—Cartridge filters of the throw-away type
    • B01D27/04—Cartridge filters of the throw-away type with cartridges made of a piece of unitary material, e.g. filter paper
    • B01D27/06—Cartridge filters of the throw-away type with cartridges made of a piece of unitary material, e.g. filter paper with corrugated, folded or wound material
    • B01D27/07—Cartridge filters of the throw-away type with cartridges made of a piece of unitary material, e.g. filter paper with corrugated, folded or wound material having a coaxial stream through the filtering element
    • 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
    • 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
    • B01D29/96—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor in which the filtering elements are moved between filtering operations; Particular measures for removing or replacing the filtering elements; Transport systems for filters
    • 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
    • B01D2201/296—Other than having a circular shape
    • 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 deals with filtering technology and relates to a filter having an elongated filter chamber and therein a replaceable filter element with a cylindrical filtering surface. At one end of the chamber there is a fitting into the interior of the element and a cylindrical nipple on which the element is sealed. In addition, there is a second fitting into the chamber.
  • the filter element is sealed on the nipple with a conventional O-ring seal.
  • a conventional O-ring seal for example, the publication US 6,099,726 discloses such a filter.
  • the nipple is positioned at the bottom end of the filter chamber and the filter element has its bottom cap provided with a tube placing itself on the outer surface of the nipple.
  • the tube has on its inner surface a circular slot with an O-ring seal therein.
  • the filter element is sealed against a nipple with a ring seal, whereby either the normal to the plane of the ring seal forms an acute angle with the axis of the element or the normal to the plane defined by the end of the response element not provided with a ring seal, forms an acute angle with the axis of the element.
  • the angle is preferably 1 - 60 °, more preferably 5 - 45 °, most preferably 10 - 20°.
  • the element can be set in place by a smooth sliding action, and no powerful sudden motion is needed. Neither does the seal disengage from its slot in the element insertion process as easily as when using a conventional sealing arrangement. Respectively, the withdrawal of the element is also easier.
  • the invention enables the use of a tighter and thereby also a more secure sealing.
  • the nipple is a cylindrical tube in the filter chamber. Most preferably, it extends into the interior of the chamber.
  • the filter element has an end cap, which is provided with a cylindrical response tube to be sealed on the nipple. Most preferably, the response tube is made in one piece with the end cap. Most preferably, the response tube is received on the outer surface of the nipple. Most preferably, the seal in this case lies in a slot present on a surface of the complementary tube. Alternatively, the complementary tube may be accommodated on the inner surface of the nipple. In this case, as well, the seal lies most preferably in a slot present on the surface of the response tube.
  • the filter chamber has an openable lid for replacing the filter elements thereby.
  • the filtering surface of the filter element may especially consist of a pleated filter fabric.
  • the element has a support member in the form of a perforated pipe with a top cap at its upper end and a bottom cap at its lower end.
  • the inlet and outlet sides may also be separated from each other with an inclined ring sealing similar to that at the end with the nipple.
  • the fluid to be filtered is passed through the filtering surface from outside to inside, the filtered fluid being discharged through the nipple.
  • the filter can be used for filtering both liquids and gases.
  • the liquid to be filtered may be e.g. a lubricating liquid, a liquid fuel, a hydraulic liquid, or water.
  • fig. 1 shows a filter in cross-section
  • fig. 2 shows in an enlarged view the detail B of fig. 1 at th bottom end of the e filter
  • fig. 3 shows in an enlarged view the detail C of fig. 1 at the top end of the filter.
  • the filter according to the drawings comprises a cylindrical filter element 2, dis- posed longitudinally in a filter chamber 1 having the shape of a circular cylinder.
  • a hole which is in line with the element and fitted with a tubular nipple 4 for placing the element thereon.
  • the top end of the chamber is closed with an openable lid 5.
  • an inlet fitting 6 for a fluid to be filtered.
  • a filtered flu- id receiver 7 provided with an outlet fitting 8 for the filtered fluid.
  • the receiver has its bottom provided with a receiver drain fitting 9, and the filter chamber has its lower part provided with a filter chamber drain fitting 10.
  • the filter element 2 has on its inside a perforated support pipe 1 1 , having dis- posed on its outer surface a pleated filter fabric 12. At the bottom end, the filter fabric is held stationary by a bottom cap 13 and at the top end by a top cap 14. The lower end of the bottom cap constitutes a cylindrical response tube 15 received against the outer surface of the nipple 4.
  • the response tube has its inner surface formed with a circling annular slot 16 such that the normal thereto is at an angle of 10 - 20 ° relative to the axis of the element. In the slot there is fitted a ring seal 17.
  • the filter has inside its lid 5 a cylindrical sleeve bracket 18 in register with the filter element 2. Between the sleeve bracket and the upper surface 19 of the top cap 14 there is in the normal situation a small gap. The sleeve bracket prevents the filter element from rising off the nipple.
  • the filter element 2 has its top cap 14 provided with a tubular upright 19 having an O-ring seal 21 in a slot on its inner surface.
  • the support pipe 1 1 of the element has an extension in the form of a cylindrical lip 22 having a closed upper end.
  • the lip has its outer surface functioning as a seating surface for the seal.
  • the top cap is further provided with a pivoting handle 23 for lifting and lowering the element.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)

Abstract

The invention relates to a sealed filter, comprising a filter chamber and therein a cylindrical nipple (4), and a cylindrical filter element (2), at the end of which is a nipple-fitting cylindrical complementary tube (15) by which the filter element is fitted on the nipple, whereby the nipple and the complementary tube constitute telescopically matching elements, one of which has a circling slot and a ring seal therein. According to the invention, either the complementary tube (15) or the nipple (4) has its surface provided with an annular slot (16), a normal to which forms an acute angle with the axis of the filter element (2) and which slot is fitted with a ring seal (17), or the plane defined by the end of a second complementary element forms an acute angle with the filter element's axis, whereby the second complementary element has its surface provided with an annular slot between the elements and a ring seal therein. The force required for inserting the element in place is lesser than that needed in the application of a conventional O-ring sealing.

Description

SEALED FILTER Technical field The invention deals with filtering technology and relates to a filter having an elongated filter chamber and therein a replaceable filter element with a cylindrical filtering surface. At one end of the chamber there is a fitting into the interior of the element and a cylindrical nipple on which the element is sealed. In addition, there is a second fitting into the chamber.
Background art
In prior known filters of the above-discussed type, the filter element is sealed on the nipple with a conventional O-ring seal. For example, the publication US 6,099,726 discloses such a filter. There, the nipple is positioned at the bottom end of the filter chamber and the filter element has its bottom cap provided with a tube placing itself on the outer surface of the nipple. The tube has on its inner surface a circular slot with an O-ring seal therein. General description of the invention
What is sought to be protected by a patent is presented in the claims.
In a filter according to the invention, the filter element is sealed against a nipple with a ring seal, whereby either the normal to the plane of the ring seal forms an acute angle with the axis of the element or the normal to the plane defined by the end of the response element not provided with a ring seal, forms an acute angle with the axis of the element. The angle is preferably 1 - 60 °, more preferably 5 - 45 °, most preferably 10 - 20°. As a result, the force required for inserting the ele- ment in place is smaller than that required when using conventional O-ring sealing. The element can be set in place by a smooth sliding action, and no powerful sudden motion is needed. Neither does the seal disengage from its slot in the element insertion process as easily as when using a conventional sealing arrangement. Respectively, the withdrawal of the element is also easier. The invention enables the use of a tighter and thereby also a more secure sealing.
Most favorably, it is the normal to the ring seal that forms the acute angle with the axis of the element.
The nipple is a cylindrical tube in the filter chamber. Most preferably, it extends into the interior of the chamber. The filter element has an end cap, which is provided with a cylindrical response tube to be sealed on the nipple. Most preferably, the response tube is made in one piece with the end cap. Most preferably, the response tube is received on the outer surface of the nipple. Most preferably, the seal in this case lies in a slot present on a surface of the complementary tube. Alternatively, the complementary tube may be accommodated on the inner surface of the nipple. In this case, as well, the seal lies most preferably in a slot present on the surface of the response tube.
Most preferably, the filter chamber has an openable lid for replacing the filter elements thereby. The filtering surface of the filter element may especially consist of a pleated filter fabric. The element has a support member in the form of a perforated pipe with a top cap at its upper end and a bottom cap at its lower end.
There may even be several filter elements and respectively nipples in the filter chamber.
At the end of the filter element opposite with respect to the nipple, the inlet and outlet sides may also be separated from each other with an inclined ring sealing similar to that at the end with the nipple.
Most preferably, the fluid to be filtered is passed through the filtering surface from outside to inside, the filtered fluid being discharged through the nipple. The filter can be used for filtering both liquids and gases. The liquid to be filtered may be e.g. a lubricating liquid, a liquid fuel, a hydraulic liquid, or water.
Drawings
The accompanying drawings constitute a part of the written description of the invention and are related to the detailed description of some embodiments of the invention. In the drawings, fig. 1 shows a filter in cross-section, fig. 2 shows in an enlarged view the detail B of fig. 1 at th bottom end of the e filter, and fig. 3 shows in an enlarged view the detail C of fig. 1 at the top end of the filter.
Detailed description of some embodiments of the invention
The filter according to the drawings comprises a cylindrical filter element 2, dis- posed longitudinally in a filter chamber 1 having the shape of a circular cylinder. At the bottom 3 of the chamber there is a hole, which is in line with the element and fitted with a tubular nipple 4 for placing the element thereon. The top end of the chamber is closed with an openable lid 5. At the side of the chamber there is an inlet fitting 6 for a fluid to be filtered. Under the chamber bottom there is a filtered flu- id receiver 7 provided with an outlet fitting 8 for the filtered fluid. The receiver has its bottom provided with a receiver drain fitting 9, and the filter chamber has its lower part provided with a filter chamber drain fitting 10.
The filter element 2 has on its inside a perforated support pipe 1 1 , having dis- posed on its outer surface a pleated filter fabric 12. At the bottom end, the filter fabric is held stationary by a bottom cap 13 and at the top end by a top cap 14. The lower end of the bottom cap constitutes a cylindrical response tube 15 received against the outer surface of the nipple 4. The response tube has its inner surface formed with a circling annular slot 16 such that the normal thereto is at an angle of 10 - 20 ° relative to the axis of the element. In the slot there is fitted a ring seal 17.
The filter has inside its lid 5 a cylindrical sleeve bracket 18 in register with the filter element 2. Between the sleeve bracket and the upper surface 19 of the top cap 14 there is in the normal situation a small gap. The sleeve bracket prevents the filter element from rising off the nipple.
The filter element 2 has its top cap 14 provided with a tubular upright 19 having an O-ring seal 21 in a slot on its inner surface. The support pipe 1 1 of the element has an extension in the form of a cylindrical lip 22 having a closed upper end. The lip has its outer surface functioning as a seating surface for the seal. The top cap is further provided with a pivoting handle 23 for lifting and lowering the element.

Claims

Claims
1 . A sealed filter, comprising a filter chamber (1 ) which has a fitting and therein a cylindrical nipple (4), and a cylindrical filter element (2) which has at its end a nipple-matching cylindrical response tube (15) by which the filter element is fitted on the nipple, whereby the nipple and the response tube constitute telescopically matching elements, one of which is provided with a circling slot and therein a ring seal, characterized in that either
- the response tube (15) or the nipple (4) has its surface provided with an annular slot (16), the normal to which forms an acute angle with the axis of the filter element (2), and in which slot is fitted a ring seal (17), or
- the plane defined by the end of one of the two response elements forms an acute angle with the axis of the filter element, said response element having its surface provided with an annular slot between the elements and therein a ring seal.
2. A filter according to claim 1 , wherein the acute angle is 1 - 60 °.
3. A filter according to claim 1 or 2, wherein the response tube (15) is on the outside of the nipple (4).
4. A filter according to any of claims 1 - 3, wherein the annular slot (16) lies on the surface of the response tube (15).
5. A filter according to any of claims 1 - 4, wherein the inlet and outlet sides of the filter element are separated from each other with an inclined O-ring sealing also at the end opposite with respect to the nipple.
6. The use of a filter according to any of claims 1 - 5 for filtering a liquid.
7. The use according to claim 6 for filtering a lubricating liquid, a liquid fuel, or a hydraulic liquid.
EP11703022A 2010-01-14 2011-01-12 Sealed filter Withdrawn EP2523740A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20105023A FI122361B (en) 2010-01-14 2010-01-14 Condensed filter
PCT/FI2011/050013 WO2011086234A1 (en) 2010-01-14 2011-01-12 Sealed filter

Publications (1)

Publication Number Publication Date
EP2523740A1 true EP2523740A1 (en) 2012-11-21

Family

ID=41620861

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11703022A Withdrawn EP2523740A1 (en) 2010-01-14 2011-01-12 Sealed filter

Country Status (3)

Country Link
EP (1) EP2523740A1 (en)
FI (1) FI122361B (en)
WO (1) WO2011086234A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010117799A2 (en) 2009-03-31 2010-10-14 Donaldson Company, Inc. Liquid filter assemblies; features; components; and, methods
EP2654921B1 (en) 2010-12-22 2021-07-07 Donaldson Company, Inc. Crankcase ventilation filter assembly and filter cartridge therefor
CN109789349B (en) * 2016-09-14 2021-09-28 唐纳森公司 Liquid filter assembly
CN118462353A (en) * 2019-05-20 2024-08-09 康明斯过滤Ip公司 Filter element with gradient seal interface

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010117799A2 (en) * 2009-03-31 2010-10-14 Donaldson Company, Inc. Liquid filter assemblies; features; components; and, methods

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0840644B1 (en) 1995-07-18 1999-04-28 Parker-Hannifin Corporation Conductive filter element
DE10052524A1 (en) * 2000-10-23 2002-04-25 Beko Technologies Gmbh Filter used for removing pollutants from a gas stream has an inlet elbow partially formed in the housing head and in the element head
DE602004020925D1 (en) * 2003-12-22 2009-06-10 Donaldson Co Inc LIQUID FILTER ARRANGEMENT AND METHOD
US7494017B2 (en) * 2004-05-17 2009-02-24 Parker-Hannifin Corporation Filter element with off-axis end cap
US8177976B2 (en) * 2006-09-06 2012-05-15 Donaldson Company, Inc. Liquid filter assembly, components; and methods

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010117799A2 (en) * 2009-03-31 2010-10-14 Donaldson Company, Inc. Liquid filter assemblies; features; components; and, methods

Also Published As

Publication number Publication date
FI20105023L (en) 2011-07-15
FI20105023A0 (en) 2010-01-14
WO2011086234A1 (en) 2011-07-21
FI122361B (en) 2011-12-30

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