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WO1994014013A1 - Filter system to purify air of smoking rooms - Google Patents

Filter system to purify air of smoking rooms Download PDF

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Publication number
WO1994014013A1
WO1994014013A1 PCT/FI1993/000530 FI9300530W WO9414013A1 WO 1994014013 A1 WO1994014013 A1 WO 1994014013A1 FI 9300530 W FI9300530 W FI 9300530W WO 9414013 A1 WO9414013 A1 WO 9414013A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
air
room
eurovent
classified
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.)
Ceased
Application number
PCT/FI1993/000530
Other languages
French (fr)
Inventor
Jaakko Raippalinna
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP6513833A priority Critical patent/JPH08507850A/en
Priority to EP94901966A priority patent/EP0672232A1/en
Priority to AU56515/94A priority patent/AU5651594A/en
Publication of WO1994014013A1 publication Critical patent/WO1994014013A1/en
Priority to NO952296A priority patent/NO952296D0/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
    • F24F8/167—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using catalytic reactions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/95—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying specially adapted for specific purposes
    • F24F8/97—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying specially adapted for specific purposes for removing tobacco smoke
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
    • F24F8/158—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using active carbon
    • 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
    • F24F3/044—Systems in which all treatment is given in the central station, i.e. all-air systems
    • F24F2003/0446—Systems in which all treatment is given in the central station, i.e. all-air systems with a single air duct for transporting treated air from the central station to the rooms

Definitions

  • the present invention relates to a smoking room the air of which can be maintained clean by means of a purification system in such a way that the particles present in the air and tobacco smoke discharging from the room will adhere to a filter unit which belongs to the purification system and has a eurovent- classified filter EU4-EU5, followed by an activated-carbon filter and, for example, aluminum oxide saturated with potas ⁇ sium permanganate, i.e. PURAFIL R filter material, which is a broad-action oxidizing agent and removes impurities from air by adsorption, absorption, and chemical oxidation.
  • PURAFIL R filter material which is a broad-action oxidizing agent and removes impurities from air by adsorption, absorption, and chemical oxidation.
  • Dust floating in the air, allergenic fungi, low humidity, and bacteria are significant factors which lower the quality of room air, but the only visible pollutant of indoor air is to ⁇ bacco smoke: nicotine, polyaromatic hydrocarbons (PAH com ⁇ pounds), and particles present in smoke.
  • the simplest method of air-conditioning smoking rooms is to produce negative pressure in the room space by means of a blow ⁇ er and to direct the air from the room into the open air out ⁇ side building. In winter this is uneconomical, since thereby expensive thermal energy is simultaneously directed outside. Therefore, the smoking-room air has been filtered and recycled on the smoking room or in the same building.
  • the object of the invention is to provide a smoking room in which aid replacement is so good that the degree of purity of air inside the room is sufficient for those in the room, and the exhaust air of the smoking room is purified so effectively that it can be led directly to the surrounding room space with ⁇ out excessive loading of the surrounding room spaces.
  • the light-structured smoking room according to the invention dif ⁇ fers from the smoking rooms on the market in that its exhaust air is purified also chemically. It differs substantially from the systems already on the market in that, in these, particles are removed from the exhaust air only physically by means of conventional electro-filters.
  • the electro-filtering method has the disadvantage that the chemical compounds present in tobacco smoke concentrate in the exhaust pipes and the filters, causing in the surrounding room spaces, even after only a short period of use, chemical emissions which are observable in the form of odor problems.
  • odor problems are eliminated by means of physical and chemical filtering systems fitted together.
  • a comprehensive servicing program is drawn up for the smoking room, ensuring the maintenance of quality of the exhaust air while minimizing the servicing costs.
  • the smoking room according to the invention is characterized in that, between the EU4-EU5 filter and the activated-carbon fil ⁇ ter, there is another eurovent-classified filter EU9-EU10, and that the purification system includes an odor filter, consist ⁇ ing of, for example, a chemically modified copolymer of poly ⁇ propylene and styrene.
  • the odor filter which is known under the trademark FIBAN", is based on a copolymer of polypropylene and styrene, having the chemical formula
  • the FIBAN" filter composition has, for example, the following chemical variants:
  • the filter unit is made up of the combination described above, all the detrimental and toxic particles present in tobacco smoke can be removed.
  • a FIBA ⁇ R filter will remove even carbon monoxide CO and carbon dioxide CO...
  • the tobacco room filters must be replaced at predetermined time intervals in order that the operation of the smoking room cor ⁇ respond to the objectives.
  • a smoking room with a volume of 8- 24 3 requires an air flow rate of 400-1000 ⁇ /h.
  • One embodiment of the invention is characterized in that in the filter unit there is, between the PURAFIL" filter and the odor filter, a third eurovent-classified filter EU9.
  • Another embodiment of the invention is characterized that, at a point after the odor filter or in connection with it, there is an activated-carbon fabric.
  • air which has been polluted by smoking can be purified of particles and toxic gas compounds present in the tobacco smoke.
  • Eurovent-classified filters EU1-EU4 are so-called rough fil ⁇ ters, which separate textile fibers, larger pollen particles, smoke, and tarnishing particles.
  • EU5-EU9 filters remove from air fine dust and pollen, carbon smoke and oil smoke, and bac ⁇ teria.
  • Negative pressure is created in the smoking room 1 by means of a blower 2, whereupon replacement air flows in through the door in the manner indicated by the arrow 3.
  • the smoking room thus also serves as an air purifier for the entire space into which the smoking room has been inserted.
  • the filter unit 4 includes a rough filter 5, eurovent-classified into category EU5, which separates dust particles from the air.
  • This so-called rough filter 5 is followed by a fine filter 6, eurovent-classified into category EU9.
  • Filter 6 is followed by an activated-carbon filter 7.
  • the next filter is a so-called PURAFIL * filter 8, which is a broad-action oxidizing agent and removes impurities from air by adsorption, absorption, and chemical oxidation.
  • the PURAFIL” filter 8 is followed by a third eurovent-classified filter 9, EU9.
  • the purification system 4 further includes an odor filter 10, which consists of a chemically modified copoly ⁇ mer of polypropylene and styrene. This odor filter removes from the mixture of tobacco smoke and air the carbon monoxide CO, which has been impossible to remove by all prior-art smoking- room filter devices.
  • the capacity of the blower 2 is controlled by a transformer regulator 11 in order to adjust the air flow to the load.
  • the odor filter may some other filter of a type similar to those mentioned above, or it may be some catalytic noble metal which serves as a catalyst.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Filtering Materials (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Central Air Conditioning (AREA)
  • Treating Waste Gases (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Electrostatic Separation (AREA)

Abstract

A smoking room (1) in which the room air can be maintained clean by means of a purification system in such a way that the particles present in the air and tobacco smoke discharging from the smoking room will adhere to a filter unit (4) belonging to the purification system, the unit having a eurovent-classified filter EU4-EU5 (5), followed by an activated-carbon filter (7) and, for example, aluminum oxide saturated with potassium permanganate, i.e. PURAFILR filter material (8), which is a broadaction oxidizing agent and removes impurities from the air by adsorption, absorption, and chemical oxidation. Between the EU4-EU5 filter (5) and the activated-carbon filter (7) there is a second eurovent-classified filter EU9-EU10 (6), and the purification system includes an odor filter (10), which is, for example, a chemically modified copolymer of polypropylene and styrene.

Description

FILTER SYSTEM TO PURIFY AIR OF SMOKING ROOMS
The present invention relates to a smoking room the air of which can be maintained clean by means of a purification system in such a way that the particles present in the air and tobacco smoke discharging from the room will adhere to a filter unit which belongs to the purification system and has a eurovent- classified filter EU4-EU5, followed by an activated-carbon filter and, for example, aluminum oxide saturated with potas¬ sium permanganate, i.e. PURAFILR filter material, which is a broad-action oxidizing agent and removes impurities from air by adsorption, absorption, and chemical oxidation.
Dust floating in the air, allergenic fungi, low humidity, and bacteria are significant factors which lower the quality of room air, but the only visible pollutant of indoor air is to¬ bacco smoke: nicotine, polyaromatic hydrocarbons (PAH com¬ pounds), and particles present in smoke.
By assigning smoking to a specially air-conditioned space, other room spaces and air-conditioning equipment can be pro¬ tected from premature soiling, and above all, persons who suf¬ fer from smoke can be protected.
The simplest method of air-conditioning smoking rooms is to produce negative pressure in the room space by means of a blow¬ er and to direct the air from the room into the open air out¬ side building. In winter this is uneconomical, since thereby expensive thermal energy is simultaneously directed outside. Therefore, the smoking-room air has been filtered and recycled on the smoking room or in the same building.
The object of the invention is to provide a smoking room in which aid replacement is so good that the degree of purity of air inside the room is sufficient for those in the room, and the exhaust air of the smoking room is purified so effectively that it can be led directly to the surrounding room space with¬ out excessive loading of the surrounding room spaces. The light-structured smoking room according to the invention dif¬ fers from the smoking rooms on the market in that its exhaust air is purified also chemically. It differs substantially from the systems already on the market in that, in these, particles are removed from the exhaust air only physically by means of conventional electro-filters. The electro-filtering method has the disadvantage that the chemical compounds present in tobacco smoke concentrate in the exhaust pipes and the filters, causing in the surrounding room spaces, even after only a short period of use, chemical emissions which are observable in the form of odor problems. According to the invention, odor problems are eliminated by means of physical and chemical filtering systems fitted together. Furthermore, a comprehensive servicing program is drawn up for the smoking room, ensuring the maintenance of quality of the exhaust air while minimizing the servicing costs.
The smoking room according to the invention is characterized in that, between the EU4-EU5 filter and the activated-carbon fil¬ ter, there is another eurovent-classified filter EU9-EU10, and that the purification system includes an odor filter, consist¬ ing of, for example, a chemically modified copolymer of poly¬ propylene and styrene.
The odor filter, which is known under the trademark FIBAN", is based on a copolymer of polypropylene and styrene, having the chemical formula
PPST
Figure imgf000004_0001
The FIBAN" filter composition has, for example, the following chemical variants:
PPST > PPST-SO3H FI3AN KI > PPST- CH2N (CH3 ) + 3C1 - FI3AΝ Al > PPST-NK2 FIBAN AK22
- ΝH a Ν
- COOH
By the system according to the invention, in which the filter unit is made up of the combination described above, all the detrimental and toxic particles present in tobacco smoke can be removed. A FIBAΝR filter will remove even carbon monoxide CO and carbon dioxide CO...
The tobacco room filters must be replaced at predetermined time intervals in order that the operation of the smoking room cor¬ respond to the objectives. A smoking room with a volume of 8- 24 3 requires an air flow rate of 400-1000 π /h.
One embodiment of the invention is characterized in that in the filter unit there is, between the PURAFIL" filter and the odor filter, a third eurovent-classified filter EU9.
Another embodiment of the invention is characterized that, at a point after the odor filter or in connection with it, there is an activated-carbon fabric.
By means of the invention and the combination specified above, air which has been polluted by smoking can be purified of particles and toxic gas compounds present in the tobacco smoke. Eurovent-classified filters EU1-EU4 are so-called rough fil¬ ters, which separate textile fibers, larger pollen particles, smoke, and tarnishing particles. EU5-EU9 filters remove from air fine dust and pollen, carbon smoke and oil smoke, and bac¬ teria.
The invention is described below with the help of an example, with reference to the accompanying drawing, which depicts sche¬ matically a smoking room and its purification system.
Negative pressure is created in the smoking room 1 by means of a blower 2, whereupon replacement air flows in through the door in the manner indicated by the arrow 3. The smoking room thus also serves as an air purifier for the entire space into which the smoking room has been inserted. The filter unit 4 includes a rough filter 5, eurovent-classified into category EU5, which separates dust particles from the air. This so-called rough filter 5 is followed by a fine filter 6, eurovent-classified into category EU9. Filter 6 is followed by an activated-carbon filter 7. The next filter is a so-called PURAFIL* filter 8, which is a broad-action oxidizing agent and removes impurities from air by adsorption, absorption, and chemical oxidation. The PURAFIL" filter 8 is followed by a third eurovent-classified filter 9, EU9. The purification system 4 further includes an odor filter 10, which consists of a chemically modified copoly¬ mer of polypropylene and styrene. This odor filter removes from the mixture of tobacco smoke and air the carbon monoxide CO, which has been impossible to remove by all prior-art smoking- room filter devices.
The capacity of the blower 2 is controlled by a transformer regulator 11 in order to adjust the air flow to the load.
The odor filter may some other filter of a type similar to those mentioned above, or it may be some catalytic noble metal which serves as a catalyst.

Claims

Claims
1. A smoking room (1) in which the room air can be main¬ tained clean by means of a purification system in such a way that the particles present in the air and tobacco smoke dis¬ charging from the room will adhere to a filter unit (4) of the purification system, the filter unit comprising a eurovent- classified filter EU4-EU5 (5), followed by an activated-carbon filter (7) and, for example, aluminum oxide saturated with potassium permanganate, i.e. PURAFIL" filter material (8), which is a broad-action oxidizing agent and removes impurities from air by adsorption, absorption and chemical oxidation, characterized in that, between the EU4-EU5 filter (5) and the activated-carbon filter (7), there is another eurovent- classified filter EU9-EU10 (6), and that the purification sys¬ tem includes an odor filter (10), which is, for example, a chemically modified copolymer of polypropylene and styrene.
2. A smoking room according to Claim 1, characterized in that between the PURAFIL* filter (8) and the odor filter (10) in the filter unit (4) there is a third eurovent-classified filter EU9 (9) .
3. A smoking room according to Claim 1 or 2, characterized in that after the odor filter (10), or in connection with it, there is an activated-carbon fabric.
PCT/FI1993/000530 1992-12-11 1993-12-09 Filter system to purify air of smoking rooms Ceased WO1994014013A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP6513833A JPH08507850A (en) 1992-12-11 1993-12-09 Air purifying filtration system for smoking rooms
EP94901966A EP0672232A1 (en) 1992-12-11 1993-12-09 Filter system to purify air of smoking rooms
AU56515/94A AU5651594A (en) 1992-12-11 1993-12-09 Filter system to purify air of smoking rooms
NO952296A NO952296D0 (en) 1992-12-11 1995-06-09 Filter system to clean the air from the smoking room

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI925653A FI92290C (en) 1992-12-11 1992-12-11 smoking room
FI925653 1992-12-11

Publications (1)

Publication Number Publication Date
WO1994014013A1 true WO1994014013A1 (en) 1994-06-23

Family

ID=8536383

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1993/000530 Ceased WO1994014013A1 (en) 1992-12-11 1993-12-09 Filter system to purify air of smoking rooms

Country Status (8)

Country Link
EP (1) EP0672232A1 (en)
JP (1) JPH08507850A (en)
AU (1) AU5651594A (en)
CA (1) CA2151497A1 (en)
FI (1) FI92290C (en)
NO (1) NO952296D0 (en)
WO (1) WO1994014013A1 (en)
ZA (1) ZA939241B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2347363A (en) * 1999-02-13 2000-09-06 Newton Holdings Air filtration system
EP1129762A1 (en) * 2000-03-03 2001-09-05 Stackhouse, Inc. Activated carbon filter
EP2960589A1 (en) * 2014-06-23 2015-12-30 Compagnie Industrielle D'Applications Thermiques System and method for controlling temperature and cleaning ambient air in a building
WO2016190788A1 (en) * 2015-05-27 2016-12-01 Qlean Air Scandinavia Ab Odour suppressing air filtration system
WO2016190787A1 (en) * 2015-05-27 2016-12-01 Qlean Air Scandinavia Ab Filter sequence comprising an odour suppressing filter

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003185204A (en) * 2001-12-14 2003-07-03 Soda Kogyo:Kk Negative pressure type air cleaner
KR101507728B1 (en) * 2015-01-28 2015-04-07 주식회사 샛별교육연구 Smoking Room
CN106949552A (en) * 2017-04-27 2017-07-14 北京立道立德环保设备有限责任公司 The environmental improvement device and its control system and control method of a kind of underground piping

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1400519A (en) * 1971-11-16 1975-07-16 Shimizu Construction Co Ltd Air purifier
DE2625534A1 (en) * 1976-06-05 1977-12-08 Kaeser Anton Air conditioning plant with refrigerator and filter - has adsorption filters and two condensers ensuring high purity cooled air
DE3003413A1 (en) * 1980-01-31 1981-08-06 Ing.(grad.) Heinz 4390 Gladbeck Hölter Air cleaning system for living room - sucks air through gel, chemisorption and carbon mon:oxide catalyst layers
EP0162022A2 (en) * 1984-05-15 1985-11-21 ITAL IDEE s.r.l. Multiple filter unit, particularly for ventilation and air conditioning systems for motor vehicles and closed environments, and provided with efficiency checking means
DE3519145A1 (en) * 1985-05-29 1986-12-04 Tetzlaff, Eduard Hubertus, Dipl.-Ing., 5013 Elsdorf Device for air cleaning
DE3725242A1 (en) * 1987-07-30 1989-03-09 Hans Dipl Ing Bong Ventilation container for cleaning contaminated air volume flows for rooms providing protection against catastrophe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1400519A (en) * 1971-11-16 1975-07-16 Shimizu Construction Co Ltd Air purifier
DE2625534A1 (en) * 1976-06-05 1977-12-08 Kaeser Anton Air conditioning plant with refrigerator and filter - has adsorption filters and two condensers ensuring high purity cooled air
DE3003413A1 (en) * 1980-01-31 1981-08-06 Ing.(grad.) Heinz 4390 Gladbeck Hölter Air cleaning system for living room - sucks air through gel, chemisorption and carbon mon:oxide catalyst layers
EP0162022A2 (en) * 1984-05-15 1985-11-21 ITAL IDEE s.r.l. Multiple filter unit, particularly for ventilation and air conditioning systems for motor vehicles and closed environments, and provided with efficiency checking means
DE3519145A1 (en) * 1985-05-29 1986-12-04 Tetzlaff, Eduard Hubertus, Dipl.-Ing., 5013 Elsdorf Device for air cleaning
DE3725242A1 (en) * 1987-07-30 1989-03-09 Hans Dipl Ing Bong Ventilation container for cleaning contaminated air volume flows for rooms providing protection against catastrophe

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2347363A (en) * 1999-02-13 2000-09-06 Newton Holdings Air filtration system
EP1129762A1 (en) * 2000-03-03 2001-09-05 Stackhouse, Inc. Activated carbon filter
EP2960589A1 (en) * 2014-06-23 2015-12-30 Compagnie Industrielle D'Applications Thermiques System and method for controlling temperature and cleaning ambient air in a building
WO2016190788A1 (en) * 2015-05-27 2016-12-01 Qlean Air Scandinavia Ab Odour suppressing air filtration system
WO2016190787A1 (en) * 2015-05-27 2016-12-01 Qlean Air Scandinavia Ab Filter sequence comprising an odour suppressing filter

Also Published As

Publication number Publication date
JPH08507850A (en) 1996-08-20
AU5651594A (en) 1994-07-04
FI92290B (en) 1994-07-15
FI92290C (en) 1995-09-13
FI925653A0 (en) 1992-12-11
NO952296L (en) 1995-06-09
NO952296D0 (en) 1995-06-09
CA2151497A1 (en) 1994-06-23
ZA939241B (en) 1994-08-05
EP0672232A1 (en) 1995-09-20

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