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Publication number
US20060199507A1
US20060199507A1 US10/540,327 US54032705A US2006199507A1 US 20060199507 A1 US20060199507 A1 US 20060199507A1 US 54032705 A US54032705 A US 54032705A US 2006199507 A1 US2006199507 A1 US 2006199507A1
Authority
US
United States
Prior art keywords
filter
electrical equipment
air
equipment according
electrical
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.)
Abandoned
Application number
US10/540,327
Other languages
English (en)
Inventor
Urbain Du Plessis
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.)
Hella Asia Pacific Pty Ltd
Original Assignee
Hella Asia Pacific Pty Ltd
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 Hella Asia Pacific Pty Ltd filed Critical Hella Asia Pacific Pty Ltd
Assigned to HELLA ASIA PACIFIC PTY. LTD. reassignment HELLA ASIA PACIFIC PTY. LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DU PLESSIS, URBAIN
Publication of US20060199507A1 publication Critical patent/US20060199507A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B01D53/261—Drying gases or vapours by adsorption
    • 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
    • B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • B01D46/0036—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by adsorption or absorption
    • 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
    • B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
    • 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
    • B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
    • B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/30—Ventilation or drainage of lighting devices
    • F21S45/33—Ventilation or drainage of lighting devices specially adapted for headlamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/106—Silica or silicates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/414—Further details for adsorption processes and devices using different types of adsorbents
    • B01D2259/4141—Further details for adsorption processes and devices using different types of adsorbents within a single bed
    • B01D2259/4145—Further details for adsorption processes and devices using different types of adsorbents within a single bed arranged in series
    • B01D2259/4148—Multiple layers positioned apart from each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
    • B01D2279/45—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for electronic devices, e.g. computers, hard-discs, mobile phones
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407—Constructional details of adsorbing systems

Definitions

  • This invention relates to a filter for use with ventilated electrical equipment.
  • Ventilated electrical equipment especially lighting, suffers from the entry of moisture, dirt and corrosive chemicals into what appear to be sealed areas of the equipment. This entry causes deterioration and ultimate breakdown of the equipment.
  • the root cause of the entry of potentially harmful fluids/contaminants is primarily the result of the expansion and contraction of air within the electrical equipment caused by changes in temperature.
  • FIG. 1 is a standard light fitting. It is however understood the process is equally applicable to many other types of electrical equipment such as motors, transformers, junction boxes and cables.
  • FIG. 1 is a schematic illustration of a conventionally sealed lighting system in which enclosure E contains a light bulb L and a cover C closes off the enclosure via a peripheral gasket or seal S.
  • enclosure E contains a light bulb L and a cover C closes off the enclosure via a peripheral gasket or seal S.
  • the air immediately surrounding the lighting equipment is indicted as SA the ambient air is indicated as A.
  • Step 1 At installation the light is connected and closed up, trapping air inside the enclosure. The air is now at ambient temperature and pressure.
  • Step 2 The lamp is energised and starts to radiate 80% or more energy as heat into the trapped air, heating the air quite effectively. The increased temperature increases the internal pressure.
  • Step 3 The pressurised internal air now finds ways to escape into the ambient air, which is at a lower pressure and temperature than the air inside the light. This escape is notwithstanding the presence of seals. The escape of the pressurised internal air takes place until the internal pressure is equal to the ambient pressure.
  • Step 4 The lamp is then switched off, allowing the internal air to cool and the pressure decreases which reverses the process in step three and causes entry of air into the enclosure.
  • This process is exasperated by some still further less obvious activity, such as the air in the immediate vicinity of the light is warmed by radiated heat from the light.
  • This heating would initially lower the relative humidity of the air immediately surrounding the light but is quickly balanced by diffusion from the ambient air, effectively creating a pocket of warm air at the same relative humidity as the ambient air.
  • This warm air enters the enclosure when the light is switched off. When the light reaches ambient temperature the excess moisture trapped inside cannot diffuse into the external air but condenses onto some surface like the lens of the light.
  • step 1 When the lamp is energised again and step 1 starts the heated air expands and leaves the light much faster than the condensate can evaporate. Thus most of the collected moisture remains inside the light.
  • the internal pressure stabilises, the internal air warms up and the remaining condensate evaporates into it.
  • the lamp is later switched off, another load of slightly more humid air enters the light. This soon forms a heavy deposit of condensate collecting on the inside of the enclosure.
  • the entry of air also has the habit of drawing in fine dust and any other corrosive materials that might be present in the air. Electrical faults occur when the condensate or carbon deposits create alternative circuits. In acid or salt laced air the conductivity of the trapped condensate may be several orders higher than fresh water, thus further contributing to breakdown of the electrical system.
  • the cyclic system described above concentrates the contaminates in the condensate and while the lamp supplies heat that speeds up the corrosive action compared with the same material at lower concentration and temperatures.
  • the normally insignificant contribution of capillary action is increased significantly by the suction of a cooling light.
  • seals are very effective to stop particulate and liquids entering an enclosure, this effectiveness is particularly increased if they can be compressed into seats. This is not always possible particularly where the equipment has to be readily dismantled for service.
  • an electrical equipment comprises a sealed chamber in which an electrical appliance is housed, and a multi-stage breather filter attached to the sealed chamber whereby in use heat generated by the electrical appliance causes air flow through the filter and also dries moisture collected by the filter.
  • the multi-stage filter comprises a filter housing defining an airflow passageway, the passageway including successive filter stages defined by
  • the passageway defines an air inlet at one end and an outlet at the other, the outlet being coupled to the electrical equipment.
  • FIG. 2 which is a schematic illustration of a light fitting incorporating a filter in accordance with an embodiment of the present invention
  • FIG. 3 is a sectional view of a driving light incorporating a filter of the invention.
  • FIG. 2 is a schematic illustration of a light fitting that comprises a rectangular enclosure 10 that contains a light bulb 11 .
  • the enclosure 10 is sealed by an external cover 12 via a peripheral seal or gasket 13 .
  • a filter 20 in the form of a cascade filter is adapted to be coupled to the enclosure.
  • the cascade filter comprises a cylindrical housing 21 open at both ends 22 and 23 to define a fluid passageway. One end 23 is in fluid communication with the enclosure 10 .
  • the cylindrical housing 21 includes a block 25 of silica gel granules adjacent the end 23 that is attached to the housing 11 .
  • the block 25 of gel is positioned slightly spaced apart from a block 26 of activated carbon granules.
  • a membrane barrier 27 is positioned on top of the activated carbon block 26 in close proximity to the outlet 22 of the housing 21 .
  • the filter 20 is designed so that air can flow in and out of the filter as described below.
  • the filter operates in the following manner. Initially the light goes through the three steps described in the introduction of the specification. Step 4 starts when the lamp 11 is switched off and the internal air starts to cool and the pressure decreases whereby drawing air into the enclosure 10 through the cascade filter 20 .
  • the air first passes through the micro-porous membrane 27 that is fabricated from PTFE or other such material. This membrane 27 filters out particulate matter to a predetermined size, typically to sub-micron level.
  • the membrane also forms a vapour barrier that stops water entering. This can include pressurised water and detergents from high pressure cleaners.
  • the air then passes through the activated carbon block 26 that strips most corrosive chemicals and free radical oxidants through adsorption. After leaving the activated carbon block 26 the air passes through silica gel 25 that dehydrates the air further. The air then enters the enclosure 10 at ambient temperature and pressure containing no moisture or corrosive agents. When the light is switched on and starts to radiate 80% or more energy as heat into the trapped air, the air heats up effectively increasing its temperature and pressure. The pressurised internal air now exits the filter 20 until the internal pressure is equal to the ambient pressure. When the lamp is switched off the operation is repeated. In this manner the cyclic turning on and off of the lamp does not draw moisture or corrosive elements into the enclosure.
  • the filter 20 effectively cleans the air mechanically and chemically to a level that prevents deterioration of the optical surface through corrosion and contamination. This ensures that the light effectively retains the light output and distribution to which it was originally designed, whilst extending its operational life significantly. Because the exiting air is hot and at a higher pressure than the ambient air, it dries out the silica gel 25 on the way out removing the moisture to the atmosphere. Thus all the benefits of higher volumetric moisture capacity of warm air accrues to the recycling system.
  • the PTFE membrane 27 is self cleaning because dirt does not stick to it.
  • FIG. 2 is merely a schematic illustration of the introduction of the filter it will be understood that electrical equipment would be designed to incorporate the filter at the design phase of the product.
  • FIG. 3 is a cross sectional view of a driving light for a vehicle that incorporates a breather filter 20 of the kind described above.
  • the driving light 30 shown in FIG. 3 includes a lens 31 that is in sealed attachment to a parabolic reflector 32 that in turn houses an appropriate light bulb 33 contained in the optical cavity 35 .
  • the reflector 32 lens 31 and light bulb 33 are all supported by a housing 34 that surrounds the rear of the reflector and includes a mounting bracket 39 .
  • the housing 34 is also coupled to an electrical lead 36 that is wired to the rear of the light bulb through a sealed cap 37 at the rear of the optical cavity 35 .
  • the housing 34 includes an air cavity 38 to the rear of light that is in fluid communication with the optical cavity 35 .
  • the multi-stage filter 20 Interposed in series with the optical cavity 35 and the air cavity 38 is the multi-stage filter 20 .
  • the air cavity 38 is in direct communication with the external atmosphere.
  • the multi-stage filter 20 comprises microporous filter mediums 40 and 41 at the air entry side and optical cavity 35 side of the filter. Between the two microporous filters is a cavity 42 filled with deactivated carbon on the optical cavity side and a cavity 43 filled with silica gel on the air entry side of the filter.
  • the wavy line on FIG. 3 indicates the air path in and out of the optical cavity 35 via the multi-staged filter 20 .
  • Suitable filter media should have a collection efficiency over a wide range of particle sizes. There are many adequate filter media that have adequate flow and resistant properties.
  • absorbent materials include: physisorbers (e.g. silica gel, activated carbon, activated alumina, molecular sieves, etc.); chemisorbers (e.g. potassium permanganate, potassium carbonate, potassium iodide, calcium carbonate, calcium sulfate, sodium carbonate, sodium hydroxide, calcium hydroxide, powered metals or other reactants for scavenging gas phase contaminants); ion exchange materials; catalytic fillers; as well as mixtures of these materials.
  • physisorbers e.g. silica gel, activated carbon, activated alumina, molecular sieves, etc.
  • chemisorbers e.g. potassium permanganate, potassium carbonate, potassium iodide, calcium carbonate, calcium sulfate, sodium carbonate, sodium hydroxide, calcium hydroxide, powered metals or other reactants for scavenging gas phase contaminants
  • ion exchange materials e.g. potassium permangan

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Centrifugal Separators (AREA)
  • Drying Of Gases (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Dry Shavers And Clippers (AREA)
  • Casings For Electric Apparatus (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
US10/540,327 2002-12-24 2003-12-24 Filter Abandoned US20060199507A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AU2002953575A AU2002953575A0 (en) 2002-12-24 2002-12-24 A filter
AU2002953575 2002-12-24
PCT/AU2003/001726 WO2004058381A1 (fr) 2002-12-24 2003-12-24 Filtre

Publications (1)

Publication Number Publication Date
US20060199507A1 true US20060199507A1 (en) 2006-09-07

Family

ID=30004658

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/540,327 Abandoned US20060199507A1 (en) 2002-12-24 2003-12-24 Filter

Country Status (9)

Country Link
US (1) US20060199507A1 (fr)
EP (1) EP1583598B1 (fr)
CN (1) CN100391573C (fr)
AT (1) ATE463295T1 (fr)
AU (1) AU2002953575A0 (fr)
CA (1) CA2511176C (fr)
DE (1) DE60332045D1 (fr)
WO (1) WO2004058381A1 (fr)
ZA (1) ZA200505072B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150321556A1 (en) * 2014-05-12 2015-11-12 Flextronics Automotive, Inc. Passive reduction or elimination of frost and fog
US20180117202A1 (en) * 2016-11-03 2018-05-03 Weiming Gao Reactivatable air purification pad with molecular sieves and process
CN110538531A (zh) * 2019-09-20 2019-12-06 河南城建学院 一种地下工程用带有气体净化功能的照明设备
CN112619302A (zh) * 2020-12-07 2021-04-09 安徽普源分离机械制造有限公司 一种气体检测用过滤装置及离心机氧含量检测系统

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DE102004036941A1 (de) * 2004-07-29 2006-03-23 Michael Salzer Reinigungsverfahren für im wesentlichen gasförmige Substanzen
CN100373422C (zh) * 2004-10-20 2008-03-05 南京Lg新港显示有限公司 显示装置的铁屑过滤结构
DE102009017728A1 (de) * 2009-04-11 2010-10-14 Automotive Lighting Reutlingen Gmbh Beleuchtungseinrichtung für ein Kraftfahrzeug
CN101813259B (zh) * 2010-04-22 2015-04-22 朱登河 一种灯具
JP5404730B2 (ja) * 2011-10-05 2014-02-05 シャープ株式会社 フィルタ及び空気清浄機
EP2648493B1 (fr) * 2012-04-02 2016-11-30 ABB Technology Oy Appareil électrique
CN103066751A (zh) * 2012-12-18 2013-04-24 山东富士制御电梯有限公司 一种开启式永磁电机磁过滤防护装置
DE102013200468B4 (de) 2013-01-15 2015-05-13 Automotive Lighting Reutlingen Gmbh Scheinwerfer für Kraftfahrzeuge
DE102013218329A1 (de) 2013-09-12 2015-03-12 Automotive Lighting Reutlingen Gmbh Beleuchtungseinrichtung
DE102015015203A1 (de) * 2015-11-24 2017-05-24 Eaton Protection Systems Ip Gmbh & Co. Kg Gehäuse
CN109843413B (zh) * 2016-10-07 2022-05-03 W.L.戈尔及同仁股份有限公司 具有差动阀面积的加热的湿气泵
CN108006449B (zh) * 2017-11-06 2019-10-29 宁波凯耀电器制造有限公司 设除硫机构的led灯
CN109011873A (zh) * 2018-08-21 2018-12-18 芜湖市朗道企业形象设计有限公司 一种项圈式二手烟净化器
CN114028877A (zh) * 2021-09-15 2022-02-11 湖北恒维通智能科技有限公司 一种用于金属增材制造烟尘高效净化装置

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US4254339A (en) * 1977-06-29 1981-03-03 Yanagimoto Seisakusho Co. Ltd. Method for the fluorimetric quantitative determination of SO2 in gases and apparatus therefor
US4644095A (en) * 1985-02-14 1987-02-17 Western Power Products, Inc. Enclosure for outdoor, ground level mounted communication equipment
US4678487A (en) * 1985-05-14 1987-07-07 Flanders Filters, Inc. Laminar flow clean room having improved filter bank
US4877433A (en) * 1986-05-23 1989-10-31 Yoshimi Oshitari High performance gas filter assembly
US5406467A (en) * 1994-08-01 1995-04-11 Ford Motor Company Ventilation system for motor vehicle light fixture
US6108202A (en) * 1996-07-03 2000-08-22 Sumitomo Wiring Systems, Ltd. Electric connection box
US6171684B1 (en) * 1995-11-17 2001-01-09 Donaldson Company, Inc. Filter material construction and method
US6238467B1 (en) * 1999-09-24 2001-05-29 Gore Enterprise Holdings, Inc. Rigid multi-functional filter assembly
US6296691B1 (en) * 1999-09-21 2001-10-02 Gore Enterprise Holdings, Inc. Multi-functional molded filter for removing contaminants from an enclosure
US6395073B1 (en) * 1999-08-23 2002-05-28 Gore Enterprise Holdings, Inc. Multi-functional filter for removing contaminants from an enclosure
US6472016B1 (en) * 1998-12-04 2002-10-29 Societe Des Ceramiques Techniques Membrane comprising a porous carrier and a layer of a molecular sieve and its preparation
US6593525B1 (en) * 2002-03-04 2003-07-15 Andrew Corporation Direct burial outdoor membrane pressurization system
US6758876B2 (en) * 2000-12-04 2004-07-06 Ebara Corporation Substrate transport apparatus, pod and method
US6824595B2 (en) * 2001-09-26 2004-11-30 Japan Gore-Tex Inc. Gas adsorption filter
US7300500B2 (en) * 2002-04-26 2007-11-27 Japan Gore-Tex, Inc. Adsorbent-formed object and an adsorbent unit

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WO2000047932A1 (fr) * 1999-02-10 2000-08-17 Donaldson Company, Inc. Systeme de commande d'humidite destine a un ensemble lampe
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US4129743A (en) * 1976-05-06 1978-12-12 Telephone Utility Terminal Co., Inc. Terminal box for underground electrical conductors
US4254339A (en) * 1977-06-29 1981-03-03 Yanagimoto Seisakusho Co. Ltd. Method for the fluorimetric quantitative determination of SO2 in gases and apparatus therefor
US4644095A (en) * 1985-02-14 1987-02-17 Western Power Products, Inc. Enclosure for outdoor, ground level mounted communication equipment
US4678487A (en) * 1985-05-14 1987-07-07 Flanders Filters, Inc. Laminar flow clean room having improved filter bank
US4877433A (en) * 1986-05-23 1989-10-31 Yoshimi Oshitari High performance gas filter assembly
US5406467A (en) * 1994-08-01 1995-04-11 Ford Motor Company Ventilation system for motor vehicle light fixture
US6171684B1 (en) * 1995-11-17 2001-01-09 Donaldson Company, Inc. Filter material construction and method
US6108202A (en) * 1996-07-03 2000-08-22 Sumitomo Wiring Systems, Ltd. Electric connection box
US6472016B1 (en) * 1998-12-04 2002-10-29 Societe Des Ceramiques Techniques Membrane comprising a porous carrier and a layer of a molecular sieve and its preparation
US6395073B1 (en) * 1999-08-23 2002-05-28 Gore Enterprise Holdings, Inc. Multi-functional filter for removing contaminants from an enclosure
US6296691B1 (en) * 1999-09-21 2001-10-02 Gore Enterprise Holdings, Inc. Multi-functional molded filter for removing contaminants from an enclosure
US6238467B1 (en) * 1999-09-24 2001-05-29 Gore Enterprise Holdings, Inc. Rigid multi-functional filter assembly
US6758876B2 (en) * 2000-12-04 2004-07-06 Ebara Corporation Substrate transport apparatus, pod and method
US6824595B2 (en) * 2001-09-26 2004-11-30 Japan Gore-Tex Inc. Gas adsorption filter
US6593525B1 (en) * 2002-03-04 2003-07-15 Andrew Corporation Direct burial outdoor membrane pressurization system
US7300500B2 (en) * 2002-04-26 2007-11-27 Japan Gore-Tex, Inc. Adsorbent-formed object and an adsorbent unit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150321556A1 (en) * 2014-05-12 2015-11-12 Flextronics Automotive, Inc. Passive reduction or elimination of frost and fog
JP2017523389A (ja) * 2014-05-12 2017-08-17 フレクストロニクス グローバル サービシーズ カナダ インコーポレイテッドＦｌｅｘｔｒｏｎｉｃｓ Ｇｌｏｂａｌ Ｓｅｒｖｉｃｅｓ Ｃａｎａｄａ Ｉｎｃ． 霜及び曇りの受動式低減または解消
US10286782B2 (en) * 2014-05-12 2019-05-14 Flextronics Global Services Canada Inc. Services Globaux Flextronics Canada Inc. Passive reduction or elimination of frost and fog
US20180117202A1 (en) * 2016-11-03 2018-05-03 Weiming Gao Reactivatable air purification pad with molecular sieves and process
CN110538531A (zh) * 2019-09-20 2019-12-06 河南城建学院 一种地下工程用带有气体净化功能的照明设备
CN112619302A (zh) * 2020-12-07 2021-04-09 安徽普源分离机械制造有限公司 一种气体检测用过滤装置及离心机氧含量检测系统

Also Published As

Publication number Publication date
CN1741838A (zh) 2006-03-01
ZA200505072B (en) 2006-04-26
DE60332045D1 (en) 2010-05-20
WO2004058381A1 (fr) 2004-07-15
AU2002953575A0 (en) 2003-01-16
EP1583598B1 (fr) 2010-04-07
ATE463295T1 (de) 2010-04-15
EP1583598A1 (fr) 2005-10-12
CA2511176C (fr) 2012-01-10
CN100391573C (zh) 2008-06-04
EP1583598A4 (fr) 2006-02-01
CA2511176A1 (fr) 2004-07-15

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