WO2013183005A1 - An inertial filter - Google Patents
An inertial filter Download PDFInfo
- Publication number
- WO2013183005A1 WO2013183005A1 PCT/IB2013/054620 IB2013054620W WO2013183005A1 WO 2013183005 A1 WO2013183005 A1 WO 2013183005A1 IB 2013054620 W IB2013054620 W IB 2013054620W WO 2013183005 A1 WO2013183005 A1 WO 2013183005A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filter
- plates
- deflector plates
- baffle
- deflector
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
- B01D21/0042—Baffles or guide plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
- B01D21/0069—Making of contact surfaces, structural details, materials therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0039—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices
- B01D46/0041—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding
- B01D46/0045—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding by using vanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2035—Arrangement or mounting of filters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49947—Assembling or joining by applying separate fastener
Definitions
- This invention relates to an inertial filter primarily for use in extracting matter from fluids.
- Inertial filters which make use of the inertia of particulate matter in a fluid passing through the filter to separate the particulate matter from the fluid are well known.
- South African Patent No. 1995/00135 discloses such an inertial filter, the entire disclosure of which is incorporated herein by reference. Due to the complex cross-sectional profiles of some inertial filters, such as that of Patent No. 1995/00135, the manufacturing process of the filter is cumbersome and complex which consequentially gives rise to costs. In the case of the filter of South African Patent No. 1995/00135, the reason for increased manufacturing costs is because the filter comprises a number of separate, individual elements which need to be joined together to construct the filter.
- an inertial filter which includes:
- each baffle plate includes:
- first filter member which includes a plurality of first deflector plates arranged such that first apertures are defined between adjacent first deflector plates; and a second filter member which includes a plurality of second deflector plates arranged such that second apertures are defined between adjacent second deflector plates,
- each baffle plate being arranged such that the second deflector plates are received in the first apertures and the first deflector plates are received in the second apertures, thereby to produce a series of interleaved deflector plates.
- the adjacent baffle plates in the pair may be arranged in parallel planes, the direction of fluid flow through the fluid passageways being transverse to or oblique to the planes.
- the pair of adjacent baffle plates may comprise a first baffle plate defining a first plane and a second baffle plate defining a second plane which is parallel to the first plane, the direction of fluid flow through the fluid passageways being transverse to or oblique to the first and second planes.
- the first deflector plates of the first filter member may be operatively obliquely inwardly disposed.
- the second deflector plates of the second filter member may be operatively obliquely inwardly disposed.
- the first and second deflector plates may have substantially the same shape and configuration, but with the respective deflector plates offset or half out of phase.
- First deflector plates may be substantially parallel to one another and regularly spaced apart.
- second deflector plates may be substantially parallel to one another and regularly spaced apart.
- the deflector plates of a baffle may be parallel and regularly spaced apart.
- a deflector plate may be elongate and extend laterally and may be inclined with respect to the plane of the baffle plate. Each deflector plate may be flanged.
- the baffle plates may be operative mirror images of one another.
- the baffle plates may be fixed in place by a peripherally extending housing or framework.
- the housing may be removably secured around the baffle plates thereby to secure the first and second filter members together. Operatively lower margins of the baffle plates may cooperate with the housing to form at least one drainage passage for collection or expulsion of filtered material.
- Each fluid passageway may define at least three areas of differential fluid velocity such that particulate material entrained in a fluid flowing through said areas may be precipitated out.
- the filter may be bi-directional.
- the baffle plates may be configured to abut in at least two different configurations such that the fluid passageways defined through the filter are different in each of the configurations.
- the baffle plates may be arranged in a first configuration in which corresponding flanged edges of the deflector plates within the respective baffle plates are in register, when the baffle plates are viewed in transverse cross-section.
- the baffle plates may be arranged in a second configuration in which corresponding flanged edges of the deflector plates within the respective baffle plates are staggered relative to one another when the baffle plates are viewed in transverse cross-section.
- Each filter member may be pressed from a single sheet of metal.
- the invention extends to a method of manufacturing an inertial filter which includes a pair of baffle plates, the method including:
- each first filter member including a plurality of first deflector plates arranged such that first apertures are defined between adjacent first deflector plates;
- each second filter member including a plurality of second deflector plates arranged such that second apertures are defined between adjacent second deflector plates;
- each baffle plate being created by arranging first and second filter members together such that the second deflector plates are received in the first apertures and the first deflector plates are received in the second apertures, thereby to produce a series of interleaved deflector plates; and arranging the baffles plates face-to-face, the baffle plates together defining a plurality of convoluted or serpentine fluid passageways therethrough.
- the method may include adjusting a die to toggle it between a die for the first filter members and a die for the second filter members.
- Figure 1 shows a three-dimensional view of an assembled filter in accordance with the invention
- Figure 2 shows a three-dimensional exploded view of the filter of figure 1 ;
- Figure 3 shows a transverse cross-sectional view of part of the filter in accordance with the invention in a first configuration
- Figure 4 shows a transverse cross-sectional view of part of the filter in accordance with the invention in a second configuration
- Figure 5 shows an exploded, transverse cross-sectional view of the filter in the second configuration.
- reference numeral 10 refers generally to an inertial filter for filtering out particulate material in a fluid passing through the filter in accordance with the invention.
- the filter 10 has a square outline when seen in plan view. It is to be understood that the filter 10 may be rectangular or in any other practical shape that may be required for a particular application of the filter 10.
- the filter 10 includes a pair of opposing baffle plates 12, 14 comprising a first baffle plate 12 and a second baffle plate 14 which are operatively in face-to-face abutment with each other such that the plates 12, 14 are in substantially parallel planes.
- Each baffle plate 12, 14 is in the form of a layered grille or grating in that it comprises a first (an inner) filter member 1 6 and a second (an outer) filter member 18. More specifically, the first baffle plate 12 includes an outer filter member 18a and an inner filter member 1 6a which are press-fitted over one another. Similarly, the second baffle plate 14 comprises an outer filter member 18b and an inner filter member 1 6b.
- the outer filter members 18a, 18b used in each baffle plate 12, 14 are in fact identical components which are oppositely orientated in use. Likewise, the inner filter members 1 6a, 16b are identical and oppositely orientated in use.
- the outer filter member 18 which is in the form of a grille includes a plurality of parallel, elongate second (or outer) deflector plates or slats 22 which extend laterally between opposing flanges 25 of the outer filter member 18.
- An elongate aperture 24 (i.e. a second or outer aperture) is defined between adjacent outer deflector plates 22.
- the outer deflector plates 22 are evenly or regularly spaced apart such that the outer apertures 24 formed between adjacent outer deflector plates 22 are equal.
- the flanges 25 of the outer filter member 18 are operatively inwardly orientated at a right angle to a longitudinal axis of the deflector plates 22.
- the inner filter member 16 which is also in the form of a grille, includes a plurality of parallel, elongate first (or inner) deflector plates or slats 23 which have essentially the same shape and configuration as the outer deflector plates 22 of the outer filter member 18 and which extend laterally between opposing, operatively inwardly orientated flanges 26 of the inner filter member 16.
- Each deflector plate 22, 23 has oppositely orientated flanged edges, which include an operatively inwardly disposed, outwardly facing edge 27 and an opposite, inwardly facing edge 28, which give rise to a roughly S-shaped cross-sectional profile of the deflector plates 22, 23 (see figures 3 and 4).
- the outer filter members 18a, 18b are configured snugly to fit over an inner filter member 1 6a, 1 6b such that the flanges 26 of the inner filter member 1 6 are received between and abut or are closely spaced to the flanges 25 of the outer filter member 18a, 18b.
- the inner filter members 1 6a, 1 6b are accordingly sandwiched between the outer filter members 18a, 18b as can be best seen in the exploded view of the filter 10 shown in figure 2.
- Each flange 25, 26 of each filter member 16, 18 includes a lug 30 and socket 31 which respectively interface with a complemental socket 31 and lug 30 formed on an operatively opposing filter member 18, 1 6 thereby serving to locate the filter members 18, 1 6 relative to one another (see figure 5).
- the filter members 1 6, 18 further include drainage holes 33 formed in the flanges 25, 26 of the filter members 18, 1 6 for draining precipitated particulate material from the filter 10.
- the drainage holes 33 in the outer and inner filter members 18, 16 are disposed such that when the filter members 18, 1 6 are assembled, the holes 33 are in register allowing the filtered material to drain through the holes 33 and to be expelled from the filter 10.
- the baffle plates 12, 14 are enclosed by a peripheral housing or frame 35 (see figure 1 ) which is in the form of a length of U-shaped channel which is bent around corners of the baffle plates 12, 14 such that flanges 36 of the channel face inwardly.
- a free end of the housing 35 includes a right angled lip 37 which passes through a corresponding slot 38 formed in an opposite end of the housing 35 in order to secure the housing 35 around the baffle plates 12, 14 (see figure 2).
- the plates 12, 14 and housing 35 may be press-fitted or hand-fitted together thereby allowing the filter 10 to be dismantled for cleaning purposes or alternatively the elements may be spot welded together thereby constituting an integrated unit.
- the filter 10 In order to assist in handling of the filter 10, it includes a pair of U-shaped handles 40.
- the baffle plates 12, 14 of the filter 10 may interface in at least two different configurations, each configuration defining a different fluid passageway.
- a first possible configuration is illustrated in figure 3.
- the fluid passageway through the filter 10 is indicated by line 42.
- the fluid velocity at the outer margin of the bend is greater than the fluid velocity at the inner margin of the bend. This difference in velocity coupled with the change in direction of the fluid urges particulate matter in the fluid towards the outer margin of the bend.
- the fluid velocity is reduced and the particulate matter is precipitated out and collected in the drainage channel formed towards an operatively lower margin of the filter 10.
- corresponding flanged edges 27, 28 of the deflector plates 22, 23 within the respective baffle plates 12, 14 are in register, when the baffle plates 12, 14 are viewed in transverse cross-section as is shown in figure 3.
- FIG 4 A second configuration of the baffle plates 12, 14 is shown in figure 4, the fluid passageway being indicated by line 44.
- the second baffle plate 14 has been rotated through 180 degrees when compared with the first configuration shown in figure 3.
- corresponding flanged edges 27, 28 of the deflector plates 22, 23 within the respective baffle plates 12, 14 are staggered relative to one another.
- a major advantage of the inertial filter 10 of the present invention over existing filters is that it is considerably simpler and cheaper to manufacture and assemble.
- the specific shape and configuration of the respective filter members 18, 1 6 allow each member to be pressed or machined from a single sheet of metal. Owing to the fact that the outer filter members 18a, 18b are identical and the inner filter members 1 6a, 16b are identical, only two jigs are required to create the required filter members 18a, 18b, 1 6a, 1 6b thus resulting in a cost saving because less moulds and tools are required to manufacture the filter parts. By way of development, a single jig with a displaceable part could even be used to manufacture the inner and outer filter members 1 6, 18.
- a further advantage of having fewer filter parts is less time is required to assemble each filter. Consequentially a greater number of filters can be produced in a shorter time period.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Separating Particles In Gases By Inertia (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2013273175A AU2013273175B2 (en) | 2012-06-08 | 2013-06-05 | An inertial filter |
US14/406,032 US9403106B2 (en) | 2012-06-08 | 2013-06-05 | Inertial filter |
NZ702817A NZ702817A (en) | 2012-06-08 | 2013-06-05 | An inertial filter |
EP13739508.3A EP2858735B1 (en) | 2012-06-08 | 2013-06-05 | An inertial filter |
ZA2014/08913A ZA201408913B (en) | 2012-06-08 | 2014-12-04 | An inertial filter |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA201204230 | 2012-06-08 | ||
ZA2012/04230 | 2012-06-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013183005A1 true WO2013183005A1 (en) | 2013-12-12 |
Family
ID=48808413
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2013/054620 WO2013183005A1 (en) | 2012-06-08 | 2013-06-05 | An inertial filter |
Country Status (6)
Country | Link |
---|---|
US (1) | US9403106B2 (en) |
EP (1) | EP2858735B1 (en) |
AU (1) | AU2013273175B2 (en) |
NZ (1) | NZ702817A (en) |
WO (1) | WO2013183005A1 (en) |
ZA (1) | ZA201408913B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3045823A1 (en) * | 2015-01-16 | 2016-07-20 | Berbel Ablufttechnik Gmbh | Extractor hood |
CN109224603A (en) * | 2018-10-15 | 2019-01-18 | 中国核电工程有限公司 | A kind of basket filter device of multiple layer combination for being detained impurity |
WO2021168716A1 (en) * | 2020-02-26 | 2021-09-02 | 深圳市迪尔安科技有限公司 | Oil fume separator of kitchen range hood |
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US20120192534A1 (en) | 2011-01-31 | 2012-08-02 | Streivor Air Systems, Inc. | Multi-stage hood filter system |
US9278359B2 (en) * | 2011-12-08 | 2016-03-08 | Kf E&E Co., Ltd. | Energy recycling type dust removing processing system for removing contaiminated material in high temperature contaminated gas and inertial impact type energy recovering and dust removing apparatus |
WO2015179670A2 (en) | 2014-05-21 | 2015-11-26 | Streivor Air Systems, Inc. | Multi-stage hood filter system |
JP2016014381A (en) * | 2014-07-03 | 2016-01-28 | ナブテスコ株式会社 | Vehicular air compression device |
US11596984B2 (en) * | 2016-11-04 | 2023-03-07 | Omega Liquid Waste Solutions Inc | Cleaning vehicle and high pressure cleaning systems |
KR102457139B1 (en) * | 2017-08-09 | 2022-10-21 | 삼성전자주식회사 | Oil mist filter and air cleaner having the same |
DE102017126766B4 (en) * | 2017-11-14 | 2020-10-08 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Vehicle component |
DE102018116526A1 (en) * | 2018-03-15 | 2019-09-19 | Dürr Systems Ag | Separation stage and separation unit with at least one separation stage |
PL71794Y1 (en) * | 2019-01-04 | 2021-02-08 | Stalgast Radom Spolka Z Ograniczona Odpowiedzialnoscia | Kitchen hood filter |
USD925717S1 (en) * | 2019-03-13 | 2021-07-20 | John Speight | Baffle filter box |
US20200306798A1 (en) * | 2019-03-27 | 2020-10-01 | Battelle Memorial Institute | Separator Assemblies and Methods |
US11925889B1 (en) * | 2023-08-15 | 2024-03-12 | Jianping Zhao | Spliceable and foldable filter element device |
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DE29921370U1 (en) * | 1999-12-04 | 2000-02-17 | Hoefer Andreas | Mechanical separator for separating liquid and / or solid particles from a gas stream |
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2013
- 2013-06-05 AU AU2013273175A patent/AU2013273175B2/en not_active Ceased
- 2013-06-05 WO PCT/IB2013/054620 patent/WO2013183005A1/en active Application Filing
- 2013-06-05 EP EP13739508.3A patent/EP2858735B1/en not_active Not-in-force
- 2013-06-05 US US14/406,032 patent/US9403106B2/en active Active
- 2013-06-05 NZ NZ702817A patent/NZ702817A/en not_active IP Right Cessation
-
2014
- 2014-12-04 ZA ZA2014/08913A patent/ZA201408913B/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0672444A1 (en) * | 1994-01-25 | 1995-09-20 | James John De Witt | Inertial filter |
ZA95135B (en) | 1994-01-25 | 1995-11-13 | James John De Witt | Inertial filter |
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DE29921370U1 (en) * | 1999-12-04 | 2000-02-17 | Hoefer Andreas | Mechanical separator for separating liquid and / or solid particles from a gas stream |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3045823A1 (en) * | 2015-01-16 | 2016-07-20 | Berbel Ablufttechnik Gmbh | Extractor hood |
CN109224603A (en) * | 2018-10-15 | 2019-01-18 | 中国核电工程有限公司 | A kind of basket filter device of multiple layer combination for being detained impurity |
WO2021168716A1 (en) * | 2020-02-26 | 2021-09-02 | 深圳市迪尔安科技有限公司 | Oil fume separator of kitchen range hood |
Also Published As
Publication number | Publication date |
---|---|
ZA201408913B (en) | 2015-12-23 |
US9403106B2 (en) | 2016-08-02 |
AU2013273175B2 (en) | 2017-02-23 |
EP2858735A1 (en) | 2015-04-15 |
AU2013273175A1 (en) | 2015-01-22 |
US20150328566A1 (en) | 2015-11-19 |
EP2858735B1 (en) | 2017-01-11 |
NZ702817A (en) | 2016-11-25 |
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