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GB2122103A - Apparatus for supplying oxygen-enriched air - Google Patents

Apparatus for supplying oxygen-enriched air Download PDF

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Publication number
GB2122103A
GB2122103A GB08315986A GB8315986A GB2122103A GB 2122103 A GB2122103 A GB 2122103A GB 08315986 A GB08315986 A GB 08315986A GB 8315986 A GB8315986 A GB 8315986A GB 2122103 A GB2122103 A GB 2122103A
Authority
GB
United Kingdom
Prior art keywords
oxygen
air
membranes
enricher
oxygen enrichment
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Withdrawn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
GB08315986A
Other versions
GB8315986D0 (en
Inventor
Minoru Yamamoto
Jiro Sakata
Masaharu Sumiyoshi
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.)
Toyota Central R&D Labs Inc
Original Assignee
Toyota Central R&D Labs Inc
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 Toyota Central R&D Labs Inc filed Critical Toyota Central R&D Labs Inc
Publication of GB8315986D0 publication Critical patent/GB8315986D0/en
Publication of GB2122103A publication Critical patent/GB2122103A/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12—Composite membranes; Ultra-thin membranes
    • B01D69/125—In situ manufacturing by polymerisation, polycondensation, cross-linking or chemical reaction
    • B01D69/127—In situ manufacturing by polymerisation, polycondensation, cross-linking or chemical reaction using electrical discharge or plasma-polymerisation
    • 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
    • B01D53/22—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 diffusion
    • 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
    • B01D53/22—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 diffusion
    • B01D53/228—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 diffusion characterised by specific membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/0007—Adding substances other than water to the air, e.g. perfume, oxygen
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/02—Preparation of oxygen
    • C01B13/0229—Purification or separation processes
    • C01B13/0248—Physical processing only
    • C01B13/0251—Physical processing only by making use of membranes
    • C01B13/0255—Physical processing only by making use of membranes characterised by the type of membrane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2210/00—Purification or separation of specific gases
    • C01B2210/0043—Impurity removed
    • C01B2210/0046—Nitrogen
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2210/00—Purification or separation of specific gases
    • C01B2210/0043—Impurity removed
    • C01B2210/0051—Carbon dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F2003/1435—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification comprising semi-permeable membrane

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Inorganic Chemistry (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

The apparatus is capable of purifying the air contained in a confined space such as the passenger cabin of an automobile. The apparatus employs an oxygen enricher 12 comprising oxygen enrichment membranes 10 fabricated by using the plasma polymerization method to form high polymer thin films on the outer surface of porous support membranes. Contaminated air drawn through an inlet 14 is blown by a blower 16 onto the oxygen enricher 12 under pressure and drawn through the oxygen enrichment membranes 10 by suction pressure produced by a suction pump 18. The oxygen enrichment membranes 10 separate out noxious gases, which are expelled through an outlet 24, and pass oxygen-enriched air having a high oxygen content to an outlet 20. <IMAGE>

Description

SPECIFICATION Apparatus for supplying oxygen enriched air This invention relates to an apparatus for supplying oxygen-enriched air, more particularly to an apparatus for supplying purified oxygenenriched air.
In order to be able to live and engage in various activities comfortably, human beings require a surrounding atmosphere of pure air containing a specific quantity of oxygen. Therefore, when the air within a human living environment has become polluted, it is necessary to purify this air and supplement it with oxygen as quickly as possible.
This necessity becomes particularly acute in the case of a relatively closed living environment.
Thus, for example, it is especially desirable to provide a supply of enriched air to the interior of an automobile during a long trip. This is because when several people ride in a car while the passenger cabin is being heated or cooled, there tends to be an increase in the amount of CO2 in the air due to the respiration of the passengers as well as an increase in the amount CO should any of the passengers smoke cigarettes or the like. At the same time there tends to be a decrease in the amount of oxygen contained in the cabin air. This is not only unpleasant and unwholesome, but also dangerous since it promotes driver fatigue and sleepiness. For safe and pleasant driving it is therefore necessary to clear the cabin air of noxious gases (CO, CO2) and to boost the oxygen content of the air as quickly as possible.
For this purpose there have been developed and marketed a number of air conditioning systems employing microporous filters, electrical dust precipitators, activated carbon filters, etc. and these are in fact capable of purifying the interior air of a car to a fairly high degree.
The problems with these conventional air conditioning systems has been, however, that they are incapable of sufficiently removing the CO and CO2 generated in a closed passenger cabin and from their structures are totally incapable of increasing oxygen content of the air. As a result it has been necessary for the car occupants to periodically open the windows to refresh the air in the passenger cabin. As, however, this increases the load on the car's heating or cooling system and raises secondary problems about driving safety when the car is moving at a high speed, the development of an improved system has been desired.
The development of an apparatus capable of quickly purifying air and enriching it with oxygen has been desired not only for use in cars but also for various other applications as well.
An object of the present invention is to provide an apparatus for supplying oxygen-enriched air which is capable of providing a supply of purified air having a high oxygen content.
According to the present invention there is provided an apparatus for supplying oxygenenriched air, comprising an oxygen enricher, an inlet for air to be enriched, an outlet for enriched air and pump means for feeding air from the inlet to the outlet through the oxygen enricher, the oxygen enricher having a plurality of oxygen enrichment membranes each consisting of a porous support membrane having a polymer film formed thereon.
The support is preferably a thin film of high polymer.
The present invention also provides an apparatus for supplying oxygen-enriched air, comprising an oxygen enricher having a plurality of oxygen enrichment membranes with seals each consisting of a porous support membrane having a high polymer thin film formed thereon, a blower for drawing air in through an inlet and applying it onto the oxygen enricher under pressure, and a suction pump for sucking the air applied onto the oxygen enricher under pressure through the oxygen enrichment membranes, whereby when the air applied onto the oxygen enricher under pressure is sucked through the oxygen enrichment membranes, the oxygen enrichment membranes selectively pass oxygen with high priority to provide oxygen-enriched air with a high oxygen content.
In the drawings: Fig. 1 is an explanatory view of an apparatus for supplying oxygen-enriched air which is an exemplifying embodiment of this invention.
Fig. 2 is a cross-sectional view of the oxygen enricher shown in Fig. 1.
The present invention was accomplished by taking advantage of the fact that an oxygen enrichment membrane consisting a a porous support membrane having a high polymer thin film formed thereon has excellent selective permeability characteristics with respect to oxygen and excellent selective separation characteristics with respect to nitrogen, carbon monoxide and carbon dioxide, and is characterised in that is uses such an oxygen enrichment membrane to provide purified oxygen-enriched air having a high oxygen content.
An embodiment of the apparatus for supplying oxygen-enriched air according to this invention is shown in Fig. 1. In this embodiment there are provided within a pressure-proof vessel 1 9 an oxygen enricher 12 having a plurality of oxygen enrichment membranes 10 each consisting of a porous support membrane having a high polymer thin film formed on the surface thereof by plasma polymerization, a blower 16 for drawing air in through an inlet 14 and applying it onto the oxygen enricher 12 under pressure and a suction pump 18 for sucking the air applied onto the oxygen enricher 12 under pressure through the oxygen enrichment membranes.With this arrangement, when the air applied onto the oxygen enricher 12 under pressure is sucked through the enrichment membranes 10, the oxygen enrichment membranes selectively pass oxygen with high priority so that oxygen-enriched air with a high oxygen content is supplied from an outlet 20.
As the porous support membranes for the oxygen enrichment membranes in the present embodiment there were used hollow fibers of porous glass formed by spinning molten borosilicate glass (70 wt.% SiO2, 25 wt.% B2Oa, 5 wt.% Na2O) into fibers, heat treating the fibers at 5000C for 50 hours under atmospheric pressure, subjecting the fibers to acid extraction in a 1 NHCI solvent at 960C for several hours and then washing them with water and drying them in an air stream.
As the high polymer thin film to be plasma polymerized on the porous support membranes there is used an organosilicon compound. For example, hexamethyldisiloxane is used as a raw material gas and this is laminated onto the outer surface of the porous support membranes by plasma polymerization.
This plasma polymerization of the high polymer thin film onto the outer surface of the porous support membranes is carried out by placing the porous support membranes in a reaction vessel, evacuating the reaction vessel while at the same time introducing the raw material hexamethyldisiloxane into the vessel so as to have the pressure thereof adjusted to 0.2 Torr, applying a 13.56 MHz high frequency electric field to put the raw material in a plasma state and allowing the polymerization reaction to proceed for about 20 minutes.
In this embodiment, the oxygen enrichment membranes 10 are formed as fine tubes using porous support membranes constituted of hollow fibers of porous glass.
The oxygen enricher 12 in this embodiment is fabricated by bundling together about 1,500 hollow fiber oxygen enrichment membranes formed in the manner described above. Then, as shown in Fig. 2, the opposite ends of the bundle of oxygen enrichment membranes are embedded in seals 22A, 22B with the end openings of the membranes left open and the bundle is supported by these seals in a sealed manner within the air passage of the vessel 1 9. As a result, the inlet 1 4 side and the outlet 20 side of the air passage of the apparatus are separated from each other by the oxygen enrichment membranes 10. In operation, the air drawn in through the inlet 14 is blown into the passages of the oxygen enrichment membranes 10 under pressure by the blower 1 6.
and the air blown into these passages under pressure is sucked through the oxygen enrichment membranes 10 by suction applied to the exteriors thereof by the suction pump 18.
Since, as was mentioned earlier, the oxygen enrichment membranes 10 selectively pass oxygen with high priority, the air obtained by blowing air into and sucking air through the oxygen enrichment membranes has a high oxygen content so that purified oxygen rich air can be obtained at the outlet 20.
Moreover, as also mentioned earlier, since the oxygen enrichment membranes 10 selectively separate out nitrogen, carbon monoxide, carbon dioxide, etc., the proportion of these gases passing through the oxygen enrichment membranes 10 is relatively low. As a consequence, it is necessary to expel the gases which are selectively rejected by the oxygen enrichment membranes 10. For this purpose in the present embodiment there is provided an exhaust port 24 located at the opposite end of the oxygen enricher 12 from the inlet 14.
Thus, the air drawn in through the inlet 14 and blown into the passages of the oxygen enrichment membranes by the blower 16 is selectively separated within these passages so that the air sucked through the oxygen enrichment membranes 10 and supplied from the outlet 20 is rich in oxygen. The remaining air, for example, the nitrogen, carbon monoxide and carbon dioxide, is expelled through the exhaust port 24.
In this embodiment, the blower 1 and the suction pump 18 are driven by a common motor 26 in order to make the apparatus more compact.
Also, a prefilter 28 is provided within the inlet 14 to remove dirt, dust and oil from the air drawn in through the inlet 14 and thus to prevent dirtying of the interior of the apparatus, particularly of the oxygen enrichment membranes.
In order to obtain oxygen-enriched air with high efficiency using a structure such as that of the present invention wherein oxygen is selectively passed through the oxygen enrichment membranes 10 with high priority, it is necessary that the pressure outside the passages of the oxygen enrichment membranes 10, that is the pressure on the side of the suction pump, be kept negative with respect to that within the passages at all times. For this purpose in this embodiment vane pumps or diaphragm pumps are used for the blower 16 and the suction pump 18.
The operation of the apparatus according to this invention will now be explained.
In the apparatus for supplying oxygen-enriched air according to this invention, the blower 16 is driven to draw air in through the inlet 14 and blow this air into the oxygen enricher 12 under pressure and the suction pump 1 8 is driven to suck the air blown into the oxygen enricher 12 through the oxygen enrichment membranes 10, whereby the desired air is delivered from the outlet 20.
In this process, as was explained in the foregoing, the oxygen enrichment membranes 10 have the property of selectively passing oxygen with high priority and of separating out nitrogen, carbon monoxide, carbon dioxide, etc. so that the air supplied from the outlet 20 is pure and rich in oxygen, namely it is free of carbon monoxide, carbon dioxide and other noxious gases and has a high oxygen content.
In an experiment using an apparatus provided with thin tube-like oxygen enrichment membranes 10 having an effective length of about 10 cm, high pressure air was blown into the passages of the oxygen enrichment membranes at 1.5 kg/cm2 by the blower 1 6 and suction pressure of 200 Torr was applied to the exteriors of the oxygen enrichment membranes by the suction pump 18.
Under these conditions it was confirmed that oxygen-enriched air containing 37% oxygen could be o#btained from the outlet 20 at the rate of 1 liter per minute from a single bundle (module) of the oxygen enrichment membranes 10.
The range of possible applications of the apparatus for supplying oxygen-enriched air in accordance with this invention is made very broad by the fact that the amount of oxygen-enriched air delivered from the outlet 10 can be increased as desired by raising the pressure of the blower 16 or by increasing the number of the oxygen enrichment membranes 10.
One particularly suitable application for the apparatus is found in the air conditioning system of an automobile.
The breath exhaled by the average adult contains 16.4% oxygen (02) and 4. 1% carbon dioxide (CO2) so that when people are confined within a closed space such as the passenger cabin of-an automobile, the amount of carbon dioxide contained in the surrounding air will increase with the passage of time. The effect that CO2 has on humans is known to depend both on the carbon dioxide concentration and on the length of exposure. When the carbon dioxide concentration exceeds 2%, a person will begin to feel slight changes in perception in about 10 minutes, and when the concentration exceeds 3%, he will feel so uncomfortable after about 20 minutes as to experience confusion in his emotions and thought.
At concentrations of over 4%, he will feel this type of confusion in only six or seven minutes. From this it is obvious that from the point of view of safe driving, it is necessary to maintain the carbon dioxide concentration in the passenger cabin to less than a specified value. This can be realized by the apparatus for supplying oxygen-enriched air according to this invention by incorporating it into the car air conditioning system so as to supply highly oxygen-enriched air into the passenger cabin. Since by supplying the passenger cabin with air having a high oxygen content it is possible to substantially reduce the carbon dioxide content of the cabin air, the apparatus according to this invention helps to refresh the driver and prevent him from growing sleepy.
The supply of oxygen-enriched air to the passenger cabin can be carried out either uniformly throughout the car interior or locally only to the driver or to any other passenger who feels he requires it.
As the oxygen-enriched air supplied by the apparatus of this invention contains about 37% oxygen, a question arises about the possibility of oxygen poisoning. However, since at one atmosphere the risk of oxygen poisoning is almost completely negligible up to an oxygen content of about 40%, the apparatus presents absolutely no problem in practical use. More specifically, symptoms of oxygen poisoning occur only after about 1 50 hours of exposure to air containing 30% oxygen and only after about 60 hours of exposure to air containing 40% oxygen. As it is hard to imagine a situation where passengers would remain in the passenger cabin for such long periods of time, the danger of oxygen poisoning due to the use of the apparatus of this invention is virtually non-existent.
When the apparatus for applying oxygenenriched air according to this invention is applied for the conditioning of passenger cabin air in an automobile, it can be made very compact and light in weight and thus contributes to the efficient utilization of car space.
Nor is the present invention limited in application to automobiles; it can also be used in a wide range of other applications as a compact andlight-weight apparatus for supplying oxygenenriched air.
For example, the apparatus can be used as a portable respirator which might, for example, be used by people escaping from a fire in a high-rise building. In such an application it would be highly helpful in preventing a major disaster by protecting the building occupants from toxic gases and providing them with adequate oxygen. It can also be used as an artificial respirator at the seaside or a swimming pool. Another conceivable application is as a portable respirator for installation at, for example, high altitude mountain cabins where it could be used to provide climbers suffering from altitude sickness with supplementary oxygen.
The apparatus for supplying oxygen-enriched air according to this invention can also be used as an air conditioning device for offices and homes.
In such cases, since it is possible to obtain oxygenenriched air by selective passage through the oxygen enrichment membranes of the air within the room, that is, air that has already been heated or cooled, the apparatus makes it possible to realize an energy-saving air conditioning system that reduces the load on the heating and cooling systems. In such cases it is convenient to make it possible to switch the mode of air conditioning system operation freely among periodic operation, sensor signal operation, continuous operation and manual operation.
Although in the embodiment described above, hollow glass fibers produced under specific conditions were used as the porous support membranes for the oxygen enrichment membranes 10, it should be understood that the invention is not limited to the use of such materials and that it is also possible to use other materials, for example a porous film having pores with diameters measuring several tens of angstoms and several micrometers. In such case, since the porous support membrane will be planar, the oxygen enrichment membranes will also be planar.
Further, it should be noted that the invention is not limited to the arrangement of the embodiment described above wherein the oxygen enrichment membranes of the oxygen enricher are formed as thin tubes, a blower is used to blow air drawn in through the inlet into the passages of the tubes and a suction pump is used to draw the air blown into the tubes through the oxygen enrichment membranes by suction pressure applied to the exteriors thereof. Instead, for example, there can be used an arrangement wherein the oxygen enrichment membranes of the oxygen enricher are formed as thin tubes, a blower is used to blow air drawn in through the inlet onto the exteriors of the tubes and a suction pump is used to draw the air blown onto the tubes through the oxygen enrichment membranes by suction pressure applied to the passages thereof.
As will be clear from the above explanation, the present invention provides a compact and simple apparatus capable of delivering highly oxygen enriched air having a high oxygen content through selective passage of the oxygen contained in air and selective separation of noxious gases.

Claims (10)

1. An apparatus for supplying oxygen-enriched air, comprising an oxygen enricher, an inlet for air to be enriched; an outlet for enriched air and pump means for feeding air from the inlet to the outlet through the oxygen enricher, the oxygen enricher having a plurality of oxygen enrichment membranes each consisting of a porous support membrane having a polymer film formed thereon.
2. An apparatus for supplying oxygen-enriched air, comprising an oxygen enricher having a plurality of oxygen enrichment membranes with seals each consisting of a porous support membrane having a high polymer thin film formed thereon, a blower for drawing air in through an inlet and applying it onto the oxygen enricher under pressure, and a suction pump for sucking the air applied onto the oxygen enricher under pressure through the oxygen enrichment membranes, whereby when the air is applied onto the oxygen enricher under pressure is sucked through the oxygen enrichment membranes, the oxygen enrichment membranes selectively pass oxygen with high priority to provide oxygenenriched air with a high oxygen content.
3. An apparatus according to claim 2, wherein said oxygen enrichment membranes are in the form of fine tubes, said blower is so arranged as to apply the air into said fine tubes, and said suction pump is so arranged as to suck the air within said fine tubes from the exterior thereof.
4. An apparatus according to claim 2, wherein the oxygen enrichment membranes are in the form of fine tubes, said blower is so arranged as to apply the air onto the exteriors of said fine tubes, and said suction is so arranged as to suck the air from the exteriors of said fine tubes into the interiors thereof.
5. An apparatus according to any preceding claim wherein said porous support membrane has a high polymer thin film formed thereon by plasma polymerization.
6. An apparatus according to claim 5, wherein the thin film comprises a polymerised organosilicon compound.
7. An apparatus according to claim 6, wherein the organosilicon compound is hexamethyldisiloxane.
8. An apparatus according to any preceding claim, wherein the porous support membranes comprise hollow fibres of porous glass.
9. An apparatus according to claim 8, wherein the fibres are formed by spinning molten borosilicate glass.
10. An apparatus for supplying oxygenenriched air, substantially as hereinbefore described with reference to the drawing.
GB08315986A 1982-06-18 1983-06-10 Apparatus for supplying oxygen-enriched air Withdrawn GB2122103A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57105177A JPS58221338A (en) 1982-06-18 1982-06-18 Oxygen enriched air supply device

Publications (2)

Publication Number Publication Date
GB8315986D0 GB8315986D0 (en) 1983-07-13
GB2122103A true GB2122103A (en) 1984-01-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB08315986A Withdrawn GB2122103A (en) 1982-06-18 1983-06-10 Apparatus for supplying oxygen-enriched air

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GB (1) GB2122103A (en)

Cited By (26)

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EP0204424A1 (en) * 1985-05-08 1986-12-10 A/G Technology Corporation Method and apparatus for gas separation
EP0312910A3 (en) * 1987-10-23 1989-09-13 Teijin Limited Oxygen enriching module and oxygen enriching apparatus using same
US4871379A (en) * 1987-12-22 1989-10-03 E. I. Du Pont De Nemours And Company Modular, shell-less, air permeator
US4881955A (en) * 1988-09-12 1989-11-21 Union Carbide Corporation Method for gas separation using helically wound hollow fibers permeable membrane cartridge
US4950315A (en) * 1989-07-14 1990-08-21 A/G Technology Corporation Multiple head pumping
USRE33502E (en) * 1985-05-08 1990-12-25 A/G Technology Corporation Gas separating
US5051113A (en) * 1990-06-13 1991-09-24 Du Pont Canada Inc. Air-intake system for mobile engines
US5053059A (en) * 1990-06-13 1991-10-01 Du Pont Canada Inc. Air-intake system for residential furnaces
US5147417A (en) * 1990-06-13 1992-09-15 Du Pont Canada Inc. Air-intake system for mobile engines
US5181995A (en) * 1990-10-01 1993-01-26 Ford Motor Company Electrochemical process and apparatus for reducing oxidants of vehicle interior air
WO1997002151A1 (en) * 1995-06-30 1997-01-23 Gerold Tebbe Vehicle ventilation system
US5678526A (en) * 1996-08-09 1997-10-21 Ford Global Technologies, Inc. System and diagnostic method for providing internal combustion engine with oxygen enriched air
WO1999004993A3 (en) * 1997-07-21 1999-05-27 Christoph Schuster Motor vehicle with a closeable driver cockpit
US6093238A (en) * 1996-11-06 2000-07-25 Huf; Hans Joachim System for supplying air to aircraft pressurized cabins
US6193785B1 (en) * 1995-10-23 2001-02-27 Hans Joachim Huf Process for providing subjects with an increased oxygen supply
US6427484B1 (en) 2001-02-28 2002-08-06 Daewoo Electronics Co., Ltd. Air conditioner having oxygen enriching device
FR2837112A1 (en) * 2002-03-12 2003-09-19 Joel Maurice Henri Gonthier Cascade filter, for treatment of toxic effluents, comprises extraction pump integrated with second filter system
US6746513B2 (en) * 2002-02-19 2004-06-08 L'air Liquide Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitations Des Procedes Georges Claude Integrated membrane filter
US6755898B2 (en) * 2002-07-26 2004-06-29 Daewoo Electronics Corporation Oxygen-enriched air supplying apparatus
WO2005028079A1 (en) * 2003-09-17 2005-03-31 Gonthier Joel Cascading filtration system having an integrated extraction pump with an absorption chamber
RU2259515C2 (en) * 2001-02-28 2005-08-27 Дэу Электроникс Корпорейшн Air-conditioning plant incorporating oxygen-enriching device
GB2426469A (en) * 2005-05-28 2006-11-29 Oluwole Shamusi Fagbemi Cabin air purifier
WO2012104272A1 (en) * 2011-01-31 2012-08-09 Eaton Aerospace Limited Gas conditioning membrane separation system
RU2645139C1 (en) * 2016-12-06 2018-02-15 Открытое акционерное общество "Аквасервис" Method for regulation of carbon dioxide and oxygen content in room
CN108869355A (en) * 2018-07-06 2018-11-23 珠海格力电器股份有限公司 Oxygen-enriched fan
RU2745853C1 (en) * 2020-07-25 2021-04-02 Общество С Ограниченной Ответственностью "Оксиом" Indoor oxygen control system

Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
JPH07109313B2 (en) * 1987-09-17 1995-11-22 株式会社日立製作所 Air conditioner
CN108488011B (en) * 2018-02-11 2024-01-19 湖南省地面无人装备工程研究中心有限责任公司 Air supply system for vehicle and special fire engine

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CN108869355A (en) * 2018-07-06 2018-11-23 珠海格力电器股份有限公司 Oxygen-enriched fan
CN108869355B (en) * 2018-07-06 2024-04-23 珠海格力电器股份有限公司 Oxygen-enriched fan
RU2745853C1 (en) * 2020-07-25 2021-04-02 Общество С Ограниченной Ответственностью "Оксиом" Indoor oxygen control system

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JPS58221338A (en) 1983-12-23
JPS6214066B2 (en) 1987-03-31
GB8315986D0 (en) 1983-07-13

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