WO1998042425A1 - Filter life measurement - Google Patents
Filter life measurement Download PDFInfo
- Publication number
- WO1998042425A1 WO1998042425A1 PCT/GB1998/000788 GB9800788W WO9842425A1 WO 1998042425 A1 WO1998042425 A1 WO 1998042425A1 GB 9800788 W GB9800788 W GB 9800788W WO 9842425 A1 WO9842425 A1 WO 9842425A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filter
- measurements
- useful life
- parameter
- remaining
- Prior art date
Links
- 238000005259 measurement Methods 0.000 title claims abstract description 59
- 239000012530 fluid Substances 0.000 claims abstract description 48
- 238000000034 method Methods 0.000 claims description 20
- 238000012935 Averaging Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 4
- 230000000007 visual effect Effects 0.000 claims 2
- 230000002596 correlated effect Effects 0.000 abstract 1
- 230000000875 corresponding effect Effects 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 description 9
- 238000001914 filtration Methods 0.000 description 4
- POIUWJQBRNEFGX-XAMSXPGMSA-N cathelicidin Chemical compound C([C@@H](C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CO)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H]([C@@H](C)CC)C(=O)NCC(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](C(C)C)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CO)C(O)=O)NC(=O)[C@H](CC=1C=CC=CC=1)NC(=O)[C@H](CC(O)=O)NC(=O)CNC(=O)[C@H](CC(C)C)NC(=O)[C@@H](N)CC(C)C)C1=CC=CC=C1 POIUWJQBRNEFGX-XAMSXPGMSA-N 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
- B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
- B01D46/0086—Filter condition indicators
-
- 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
- B01D35/143—Filter condition indicators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D37/00—Processes of filtration
- B01D37/04—Controlling the filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D37/00—Processes of filtration
- B01D37/04—Controlling the filtration
- B01D37/043—Controlling the filtration by flow measuring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D37/00—Processes of filtration
- B01D37/04—Controlling the filtration
- B01D37/046—Controlling the filtration by pressure measuring
-
- 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
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/446—Auxiliary equipment or operation thereof controlling filtration by pressure measuring
Definitions
- the invention relates to methods and devices for measuring the
- a differential pressure can be determined at which the
- Another known device also detects the differential pressure of
- the number of diodes that are illuminated increases roughly in linear proportion to the increases in differential pressure. This apparatus does not readily allow a prediction of when it will be necessary to replace or clean the filter, because the changes in differential pressure are not linearly related to the changes in the remaining useful life of the filter.
- measuring means for measuring a parameter of flow of
- a filter comprising flowing a particulate-laden fluid through a
- Figure 1 shows a filter assembly including a filter element
- Figure 2 is a graph plotting voltage output from a differential
- the filter assembly comprises a housing
- a by-pass valve 30 is provided in a passage
- a filter element 11 is mounted within the housing 10 and
- the fluid outlet 14 extends
- the filter medium 16 may be any material
- suitable form of media such as a membrane or a depth filter
- the second end cap 18 is provided centrally with an
- the measuring device comprises a pressure transducer 20 and a
- the transducer 20 is mounted in the housing 10 and
- the transducer 20 is connected via
- the processor 21 has a display 23, and a data inlet/outlet 25
- the processor 21 also has a
- writable memory 26 and an analogue to digital converter 27.
- the filter element 11 is used to filter a flow of fluid carrying
- the fluid is pumped through the housing 10.
- the fluid passes through the inlet 13 into the chamber 12
- the particulates retained by the filter medium 16 reduce the rate
- the filter element 11 needs to be replaced or cleaned when the
- Some filters are provided with a by-pass controlled by a valve that opens to allow direct fluid
- the differential pressure across the by-pass valve exceeds a predetermined level.
- the remaining useful life of the filter material 16 is zero.
- this level can be related to a particular differential pressure and in this example, the attainment of the particular differential pressure is used to indicate when the filter element 16 has zero remaining useful life (as described below) .
- the measuring device 20, 21, 22 uses the measured differential pressure to provide an indication of the remaining useful life of the filter medium 16 as determined by the blockage of the filter elements 16 by particulates and indicates the estimated remaining useful life in a way that varies generally linearly during the time that fluid is flowing through the filter (plainly
- the pressure transducer 20 detects the differential pressure between the fluid in the inlet 13 and the fluid in the outlet 14 (which, of course, corresponds to the differential pressure of the fluid across the medium 16) and generates an analogue signal which varies over time as a function of the differential pressure.
- the signal is passed to the analogue to digital converter 27 of the processor 21 via the cable 22.
- the analogue to digital converter 27 produces from the analogue signal a sequence of digital signals corresponding to successive instantaneous values of the analogue signal and thus to successive measurements of the differential pressure.
- the processor 21 stores in the memory 26 a set of values of differential pressure and the remaining useful life represented by those values . These are formulated and input into the memory 26 in a manner to be described below. As a digital differential pressure signal is received by the memory 26, the memory 26 produces the corresponding value of the remaining useful life. Where the received differential pressure signal falls between two stored values, an interpolator 28 generates the corresponding value of the remaining useful life. The interpolation may be linear. The measurements are output as digital signals. In this example,
- time value is indicated as 10%, 10% of useful life remains.
- the display 23 being up-dated each time the
- the processor 21 also has a
- the display 23 includes a mode indicator 24 that
- these measurements may be output to remote data
- the processor 21 may be programmed to produce an alarm message
- Alarm messages may also be produced in the absence of
- Alarm messages may be produced at other
- filtration can be down loaded to a computer 31 for analysis.
- This analysis may involve comparing the useful life of a first
- the same computer is used to programme the processor 21 before
- the stored data may be formulated by performing a trial run using
- particulate-laden fluid corresponding to, or corresponding as
- the level can be any type of material that element should be replaced or cleaned.
- the level can be any type of material that element should be replaced or cleaned.
- the filter medium is close to damage or inutility and choosing
- This data is recorded on a magnetic disc and input
- processor 21 is thus able, on receiving a measurement of
- particulate-laden fluid is flowed through the filter element 11
- the processor can, from this data, derive the
- the processor 21 has an averaging programme and
- a peak detection programme one or the other of which may be used
- the peak detection programme monitors a
- the apparatus described above has a number of other
- a number of different data sets corresponding to a number of alternative pressure detectors or alternative fluids or alternative particle sizes can be formulated for use with the same element .
- RS 232 serial data transmission line
- the signal generated by the transducer 20 may be a sequence of discrete signals, each being related by a function to corresponding instantaneous values of the differential pressure.
- the transducer 20 itself could be
- the transducer 20 may be provided
- thermal lockout device that prevents actuation due to
- the stored data could correlate differential pressure
- the stored data could relate differential pressure measurements
- the look-up table could relate signal values to the
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU65095/98A AU733171B2 (en) | 1997-03-20 | 1998-03-17 | Filter life measurement |
CA002284564A CA2284564A1 (en) | 1997-03-20 | 1998-03-17 | Filter life measurement |
EP98910869A EP0975408A1 (en) | 1997-03-20 | 1998-03-17 | Filter life measurement |
JP54444898A JP2001518187A (en) | 1997-03-20 | 1998-03-17 | Measuring filter life |
US09/381,169 US6334959B1 (en) | 1997-03-20 | 1998-03-17 | Filter life measurement |
NO994468A NO994468L (en) | 1997-03-20 | 1999-09-15 | Measurement of filter life |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9705818A GB2323310B (en) | 1997-03-20 | 1997-03-20 | Filter life measurement |
GB9705818.4 | 1997-03-20 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/381,169 A-371-Of-International US6334959B1 (en) | 1997-03-20 | 1998-03-17 | Filter life measurement |
US10/013,673 Continuation US20020060191A1 (en) | 1997-03-20 | 2001-12-13 | Filter life measurement |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998042425A1 true WO1998042425A1 (en) | 1998-10-01 |
Family
ID=10809597
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1998/000788 WO1998042425A1 (en) | 1997-03-20 | 1998-03-17 | Filter life measurement |
Country Status (8)
Country | Link |
---|---|
US (2) | US6334959B1 (en) |
EP (1) | EP0975408A1 (en) |
JP (1) | JP2001518187A (en) |
AU (1) | AU733171B2 (en) |
CA (1) | CA2284564A1 (en) |
GB (1) | GB2323310B (en) |
NO (1) | NO994468L (en) |
WO (1) | WO1998042425A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11850538B2 (en) | 2018-12-11 | 2023-12-26 | Yamashin-Filter Corp. | Filter life predicting apparatus |
Families Citing this family (32)
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US6471853B1 (en) * | 2000-11-22 | 2002-10-29 | Pti Technologies, Inc. | Prognostic health monitoring of fluidic systems using MEMS technology |
DE10151271B4 (en) * | 2001-10-17 | 2010-01-07 | Sartorius Stedim Biotech Gmbh | Method for performing integrity tests of filter elements |
US20030226809A1 (en) * | 2002-06-06 | 2003-12-11 | Detroit Diesel Corporation | Method and apparatus for determining oil filter life |
EP1551527A1 (en) * | 2002-10-18 | 2005-07-13 | PTI Technologies, Inc. | Prognostic health monitoring of fluidic systems using mems (micro-electro-mechanical systems) technology |
US7182858B2 (en) * | 2003-03-04 | 2007-02-27 | Kinetico Incorporated | Multiple barrier filter apparatus |
US20040217872A1 (en) * | 2003-05-02 | 2004-11-04 | Bhardwaj Arun K. | Apparatus for and method of monitoring the condition of a filter element |
GB0317449D0 (en) * | 2003-07-25 | 2003-08-27 | Goodrich Control Sys Ltd | Valve |
US6993414B2 (en) * | 2003-12-18 | 2006-01-31 | Carrier Corporation | Detection of clogged filter in an HVAC system |
US8480373B2 (en) * | 2004-08-26 | 2013-07-09 | Pentair Water Pool And Spa, Inc. | Filter loading |
DE102004061416A1 (en) * | 2004-12-21 | 2006-07-06 | Daimlerchrysler Ag | Lubricating system for internal combustion engines |
US7581430B2 (en) * | 2007-05-23 | 2009-09-01 | K&N Engineering, Inc. | Air velocity apparatus and system |
US7493820B2 (en) * | 2007-07-16 | 2009-02-24 | Mossman Guy E | Gas pump filter optimization and alarm system with GPS and web enabled monitoring |
US7937987B2 (en) * | 2007-09-28 | 2011-05-10 | Circor Instrumentation Technologies, Inc. | Filter monitor-flow meter combination sensor |
FR2927003B1 (en) * | 2008-02-06 | 2010-09-24 | Snecma | DETECTION OF THE CLOSURE OF A FILTER OF A FLUID |
US8086424B2 (en) | 2008-07-11 | 2011-12-27 | General Electric Company | Method for determining life of filters in bag house |
DE102008036096B4 (en) * | 2008-08-04 | 2016-05-19 | Mn-Beteiligungs-Gmbh | Filtration system with fluid couplings |
JP5173688B2 (en) * | 2008-09-12 | 2013-04-03 | 三菱重工業株式会社 | Industrial vehicle filter fault diagnosis method and apparatus |
US8474305B2 (en) * | 2009-01-30 | 2013-07-02 | Luna Innovations Incorporated | Systems and methods to detect particulate debris in a fluid |
JP5260381B2 (en) * | 2009-03-30 | 2013-08-14 | メタウォーター株式会社 | Life Prediction System for Dust Collection Ceramic Filter |
FR2949352B1 (en) * | 2009-08-31 | 2013-03-01 | Snecma | MONITORING A FILTER FOR FILTERING A FLUID IN AN AIRCRAFT ENGINE |
US20110154242A1 (en) * | 2009-12-21 | 2011-06-23 | Jed Babbington Stevens | Flow differential pressure module |
US20110185895A1 (en) * | 2010-02-03 | 2011-08-04 | Paul Freen | Filter apparatus and method of monitoring filter apparatus |
CH704831A1 (en) | 2011-04-14 | 2012-10-15 | Belimo Holding Ag | A method and system for automated function control in a heating, ventilation and air conditioning. |
WO2013150170A1 (en) | 2012-04-03 | 2013-10-10 | Trendiwell Oy | Measurement arrangement and related method |
US10179894B2 (en) * | 2014-08-14 | 2019-01-15 | Mor-Dall Enterprises, Inc. | Beer filter and method of filtration |
US9726564B2 (en) | 2015-04-28 | 2017-08-08 | Cummins, Inc. | System and method for determining a pressure drop across a filter |
CN105487459A (en) * | 2015-11-27 | 2016-04-13 | 小米科技有限责任公司 | Service life calculation method and device |
US10753301B2 (en) * | 2016-04-08 | 2020-08-25 | Cummins Filtration Ip, Inc. | System and method for outputting filter monitoring system information via telematics |
US10179308B2 (en) * | 2016-04-13 | 2019-01-15 | Carleton Life Support Systems Inc. | On-board inert gas generating system prognostic health monitoring |
US11065568B2 (en) * | 2018-01-19 | 2021-07-20 | Mann+Hummel Gmbh | Smart filter module analysis system and associated methods |
US10363510B1 (en) | 2018-06-01 | 2019-07-30 | Ford Global Technologies, Llc | Climate control filter monitoring system and method of monitoring the useful life of a climate control system filter |
CN114307353B (en) * | 2022-01-11 | 2023-01-20 | 珠海格力电器股份有限公司 | Filter element expiration reminding method and device and water purifying equipment |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3642992A1 (en) * | 1986-12-17 | 1988-06-30 | Otto Dipl Ing Klein | Method of determining the degree of contamination of a cleaning component |
US5036698A (en) * | 1990-05-04 | 1991-08-06 | Allied-Signal Inc. | Method and apparatus for predicting life of air filter cartridges |
DE19504327A1 (en) * | 1995-02-10 | 1996-08-14 | Tepcon Eng Gmbh | Cost-oriented control for an exchangeable or regenerable conditioning device |
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DE3135732C2 (en) * | 1981-09-09 | 1984-08-30 | Bauer Kompressoren GmbH, 8000 München | Method and device for monitoring the service life of adsorption cartridges for drying and / or cleaning moist compressed air |
US4685066A (en) * | 1984-12-18 | 1987-08-04 | Caterpillar Inc. | Contamination monitor and method |
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GB9113150D0 (en) * | 1991-06-18 | 1991-08-07 | Endless Energy Ltd | Backwash apparatus |
FR2705734B1 (en) * | 1993-05-25 | 1995-06-30 | Snecma | Method and device for improving the safety of fluid filters. |
CA2180488A1 (en) * | 1995-07-11 | 1997-01-12 | Roger Edward Page | Filters |
US5702592A (en) | 1995-10-20 | 1997-12-30 | Western Filter Corporation | Filter monitoring device which monitors differential pressure and temperature |
-
1997
- 1997-03-20 GB GB9705818A patent/GB2323310B/en not_active Expired - Fee Related
-
1998
- 1998-03-17 WO PCT/GB1998/000788 patent/WO1998042425A1/en not_active Application Discontinuation
- 1998-03-17 JP JP54444898A patent/JP2001518187A/en active Pending
- 1998-03-17 EP EP98910869A patent/EP0975408A1/en not_active Withdrawn
- 1998-03-17 CA CA002284564A patent/CA2284564A1/en not_active Abandoned
- 1998-03-17 US US09/381,169 patent/US6334959B1/en not_active Expired - Fee Related
- 1998-03-17 AU AU65095/98A patent/AU733171B2/en not_active Ceased
-
1999
- 1999-09-15 NO NO994468A patent/NO994468L/en unknown
-
2001
- 2001-12-13 US US10/013,673 patent/US20020060191A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3642992A1 (en) * | 1986-12-17 | 1988-06-30 | Otto Dipl Ing Klein | Method of determining the degree of contamination of a cleaning component |
US5036698A (en) * | 1990-05-04 | 1991-08-06 | Allied-Signal Inc. | Method and apparatus for predicting life of air filter cartridges |
DE19504327A1 (en) * | 1995-02-10 | 1996-08-14 | Tepcon Eng Gmbh | Cost-oriented control for an exchangeable or regenerable conditioning device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11850538B2 (en) | 2018-12-11 | 2023-12-26 | Yamashin-Filter Corp. | Filter life predicting apparatus |
Also Published As
Publication number | Publication date |
---|---|
NO994468L (en) | 1999-11-03 |
AU733171B2 (en) | 2001-05-10 |
EP0975408A1 (en) | 2000-02-02 |
JP2001518187A (en) | 2001-10-09 |
GB2323310A (en) | 1998-09-23 |
CA2284564A1 (en) | 1998-10-01 |
GB2323310B (en) | 2001-04-18 |
AU6509598A (en) | 1998-10-20 |
US6334959B1 (en) | 2002-01-01 |
NO994468D0 (en) | 1999-09-15 |
GB9705818D0 (en) | 1997-05-07 |
US20020060191A1 (en) | 2002-05-23 |
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