EP1423678A4 - Clogged filter detector - Google Patents

Clogged filter detector

Info

Publication number: EP1423678A4
Authority: EP; European Patent Office
Prior art keywords: clogged filter; filter detector; detector; clogged; filter
Prior art date: 2001-08-06
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 Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Withdrawn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

EP02761233A

Other languages

German (de)

French (fr)

Other versions

EP1423678A2 (en

Inventor

David Wilson

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.)

Individual

Original Assignee

Individual

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.)

2001-08-06

Filing date

2002-08-01

Publication date

2005-05-25

2002-08-01 Application filed by Individual filed Critical Individual

2004-06-02 Publication of EP1423678A2 publication Critical patent/EP1423678A2/en

2005-05-25 Publication of EP1423678A4 publication Critical patent/EP1423678A4/en

Status Withdrawn legal-status Critical Current

Links

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
- 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
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2273/00—Operation of filters specially adapted for separating dispersed particles from gases or vapours
- B01D2273/26—Making use of optical waves, e.g. for measurements
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/39—Monitoring filter performance

Landscapes

Chemical & Material Sciences (AREA)
Chemical Kinetics & Catalysis (AREA)
Investigating Or Analysing Materials By Optical Means (AREA)
Air Conditioning Control Device (AREA)
Filtering Of Dispersed Particles In Gases (AREA)

EP02761233A 2001-08-06 2002-08-01 Clogged filter detector Withdrawn EP1423678A4 (en)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
US31037701P	2001-08-06	2001-08-06
US310377P		2001-08-06
PCT/US2002/024760 WO2003014838A2 (en)	2001-08-06	2002-08-01	Clogged filter detector

Publications (2)

Publication Number	Publication Date
EP1423678A2 EP1423678A2 (en)	2004-06-02
EP1423678A4 true EP1423678A4 (en)	2005-05-25

Family

ID=23202222

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP02761233A Withdrawn EP1423678A4 (en)	2001-08-06	2002-08-01	Clogged filter detector

Country Status (3)

Country	Link
EP (1)	EP1423678A4 (en)
AU (1)	AU2002326513A1 (en)
WO (1)	WO2003014838A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP2008547057A (en)	2005-06-24	2008-12-25	スリーエムイノベイティブプロパティズカンパニー	Optical device and method with cantilevered fiber array
JP5991893B2 (en) *	2012-09-26	2016-09-14	シャープ株式会社	Filter device and air conditioner
US9207727B2 (en)	2014-02-24	2015-12-08	Lenovo Enterprise Solutions (Singapore) Pte. Ltd.	Determining air filter replacement conditions using air flow and energy consumption values
FR3029610B1 (en) *	2014-12-05	2019-09-20	Schneider Electric Industries Sas	ENCRAGEMENT DETECTION FILTER SYSTEM FOR HEATING, VENTILATION OR AIR CONDITIONING INSTALLATION
US12390755B2 (en) *	2021-04-19	2025-08-19	B/E Aerospace Inc.	Clogged air filter detection for galley inserts
DE102023126913A1 (en) *	2023-10-04	2025-04-10	Hengst Se	Procedure for testing a filter unit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2147697A (en) *	1983-10-05	1985-05-15	Fraunhofer Ges Forschung	Level measurement method and apparatus
DE3644045A1 (en) *	1986-12-22	1988-06-30	Wilhelm Doerenkaemper	Apparatus for monitoring the soiling of gas filters, in particular air filters
DE3716049A1 (en) *	1987-05-14	1988-11-24	Hagenuk Telecom Gmbh	Device for monitoring air filters having filter mats
US5796472A (en) *	1996-09-10	1998-08-18	Wirthlin; Alvin R.	Optical translucency indicator for measurement of air filter dirtiness, liquid level, thickness, and other parameters

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE4014442A1 (en) *	1990-05-05	1991-11-07	Duepro Ag	DEVICE FOR DISPLAYING THE DEGREE OF POLLUTION OF AIR FILTERS IN SUCTION CLEANING DEVICES, ROOM FILTERS OR THE LIKE.

2002
- 2002-08-01 WO PCT/US2002/024760 patent/WO2003014838A2/en not_active Ceased
- 2002-08-01 EP EP02761233A patent/EP1423678A4/en not_active Withdrawn
- 2002-08-01 AU AU2002326513A patent/AU2002326513A1/en not_active Abandoned

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2147697A (en) *	1983-10-05	1985-05-15	Fraunhofer Ges Forschung	Level measurement method and apparatus
DE3644045A1 (en) *	1986-12-22	1988-06-30	Wilhelm Doerenkaemper	Apparatus for monitoring the soiling of gas filters, in particular air filters
DE3716049A1 (en) *	1987-05-14	1988-11-24	Hagenuk Telecom Gmbh	Device for monitoring air filters having filter mats
US5796472A (en) *	1996-09-10	1998-08-18	Wirthlin; Alvin R.	Optical translucency indicator for measurement of air filter dirtiness, liquid level, thickness, and other parameters

Also Published As

Publication number	Publication date
WO2003014838A2 (en)	2003-02-20
AU2002326513A1 (en)	2003-02-24
EP1423678A2 (en)	2004-06-02
WO2003014838A3 (en)	2003-04-10
WO2003014838B1 (en)	2003-05-22

Legal Events

Date	Code	Title	Description
2004-04-16	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
2004-06-02	17P	Request for examination filed	Effective date: 20040305
2004-06-02	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
2004-06-02	AX	Request for extension of the european patent	Extension state: AL LT LV MK RO SI
2005-05-25	A4	Supplementary search report drawn up and despatched	Effective date: 20050408
2005-05-25	RIC1	Information provided on ipc code assigned before grant	Ipc: 7B 01D 46/44 B Ipc: 7G 01N 21/00 A
2007-06-13	17Q	First examination report despatched	Effective date: 20060613
2007-06-20	17Q	First examination report despatched	Effective date: 20060613
2008-02-15	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN
2008-03-19	18D	Application deemed to be withdrawn	Effective date: 20070926

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