GB2474629A - Purging the atmosphere in an area - Google Patents

Purging the atmosphere in an area Download PDF

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Publication number
GB2474629A
GB2474629A GB0917102A GB0917102A GB2474629A GB 2474629 A GB2474629 A GB 2474629A GB 0917102 A GB0917102 A GB 0917102A GB 0917102 A GB0917102 A GB 0917102A GB 2474629 A GB2474629 A GB 2474629A
Authority
GB
United Kingdom
Prior art keywords
area
purging
atmosphere
gas
filtration arrangement
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Withdrawn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
GB0917102A
Other versions
GB0917102D0 (en
Inventor
Myles Richard Godden
Mark Stevens
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 GB0917102A priority Critical patent/GB2474629A/en
Publication of GB0917102D0 publication Critical patent/GB0917102D0/en
Publication of GB2474629A publication Critical patent/GB2474629A/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
    • 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
    • F24F8/80—Self-contained air purifiers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/30—Filter housing constructions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/022—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing comprising a compressor cycle
    • F24F1/025—
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/04—Arrangements for portability
    • 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

Abstract

Apparatus 10 for purging the atmosphere in a building or other area where a material such as CS gas is used (e.g. for riot training) has a lower air inlet 18, filter chambers 20,22,24 above the inlet 18, a fan 26 above the chambers to suck air through the filters and then out through an outlet 28. Another embodiment has transverse filters (fig 2). The fan operates at a slow speed to produce lower pressure to prevent material leaking from the building during training, and then switched to a greater speed for purging the building. Purging may be for a predetermined period, and the apparatus can control external dampers of the building. The apparatus may be moved by a forklift or loading eyes 14. The filters can be HEPA, ULPA or carbon, and sealed in a bag after use.

Description

Gas Extraction This invention concerns a method of controlling an area, and also a method of purging an area of CS gas, apparatus for purging the atmosphere in an area, and particularly but not exclusively apparatus for purging CS gas from an area.
In certain training and other simulated regimes/situations it is necessary to supply materials such as CS gas into an area. After use it is necessary to evacuate such materials from the area.
According to a first aspect of the present invention there is provided a method of controlling an area during and after release of a material into the atmosphere in the area, the method including once it is required to purge the material from the area, applying suction to draw the atmosphere through a filtration arrangement, which filtration arrangement substantially removes solids from the atmosphere.
The filtration arrangement may include any of HEPA, ULPA and/or carbon filters.
Prior to purging, reduced pressure may be produced in the area to reduce any leakage of material therefrom. Suction as applied during purging may be applied at a lower level to provide the reduced pressure in the area.
The purging suction may be provided to run for a particular time, which time may be adjustable, and then to automatically shut off. The filtration arrangement may provide a safe change of filters, wherein a used filter media is received in a receptacle which is then sealed closed.
Closable outlet means may be provided for the area, and said outlet means may be automatically opened upon purging of the area.
The invention also provides a method of controlling an area during and after release of CS gas, the method being according to any of the preceding five paragraphs.
According to a second aspect of the invention there is provided apparatus for purging the atmosphere in an area, the apparatus comprising a fan for sucking gases into the apparatus, and a filtration arrangement for taking solids out of the gases which are sucked into the apparatus.
The filtration arrangement may comprise any of HEPA, ULPA and/or carbon filtration.
The apparatus may be arranged such that during purging the sucking fan automatically runs for a predetermined period of time, which period may
be adjustable.
The apparatus may comprise safe change filtration units, wherein a used filter is received in a receptacle which is then sealed closed.
The apparatus may include closable outlet means to the area which are operatively connected to the apparatus, such that upon purging of the area the outlet means are automatically opened.
The apparatus may be configured such that the fan can suck at a reduced rate prior to purging to produce a reduced pressure in the area.
The invention still further provides apparatus for purging CS gas from an area, the apparatus be according to any of the preceding six paragraphs.
Embodiments of the present invention will now be described by way of example only and with reference to the accompanying drawings, in which:-Fig. 1 is a perspective view of a first apparatus according to the invention; Fig. 2 is a perspective view of a second apparatus according to the invention; and Fig. 3 is a diagrammatic sectional view of part of a third apparatus according to the invention.
Fig. 1 shows an apparatus 10 suitable for purging a building or other area where CS gas is to be used. The apparatus comprises a cabinet 12 with upper loading eyes 14 and lower openings 16, the latter permitting manoeuvring by a forklift truck, The apparatus 10 comprises a lower inlet 18 which can be connected to the building or other place by ducting. Located above the inlet are three filter chambers 20, 22 and 24. The chambers 20, 22 and 24 can include any of HEPA (High Efficiency Particle Arrester), ULPA (Ultra Low Particle Arrester) and/or carbon filters as required for a particular area. The chambers 20, 22, 24 may include safe change filtration arrangements as will be described in relation to Fig. 3.
Located above the chambers 20, 22 and 24 is a fan 26 which can suck air from the inlet 18 through the chambers 20, 22 and 24, and then out through an outlet 28 which may be connected to an external wall or other appropriate evacuation place.
In use a building or other location may have CS gas supplied thereinto, for instance for riot training or similar simulated roles produced as necessary by the policing authorities and/or the military. The air propulsion 26 will be operating at a slow speed to provide a reduced pressure within the building or other place to reduce any gas or particulate leakage therefrom. In the case of a building external dampers or other openings may be provided, and these will be closed at this time.
Once a training exercise or other has been completed, it may be required to purge the building or other location. At this point the apparatus 1 0 is switched such that the fan 26 operates at a greater speed to evacuate gases/particulates from the building through the filters 20, 22 and 24. The particulate material of the CS gas will be retained in these filters, leaving substantially clean air to exit through the outlet 28.
When the fan 26 moves up to increased speed, the dampers in the building or other location will automatically be opened to allow air from the atmosphere to enter the building or other location. The apparatus 10 may be programmed such that the purging of the building or other location will take place for a set period. The apparatus may be configured such that this set period can be adjusted dependent on the size and nature of the area to be purged.
Fig. 2 shows a further apparatus 30 which is similar in many respects but has a different shape cabinet 32 again provided with lifting eyes 34 and openings 36 to receive the tines of a forklift truck. The cabinet 32 is divided into lower and upper parts, and an inlet 38 is provided into the lower part leading transversely to three filter stages 40, 42, 44.
Again a mixture of HEPA, ULPA and/or carbon filters can be used as required in the stages 40, 42, 44. Beyond the third filter stage 44 an opening is provided into the upper part of the cabinet 32 where a fan 46 is provided leading to an outlet 48. A removable mesh 50 as shown can be fitted on the inlet 38 and/or outlet 48. The apparatus 30 can be used in a similar manner to the apparatus 10.
Fig. 3 shows a further apparatus 52 and particularly illustrates a safe change filtration arrangement 54. In this instance a receptacle in the form of a bag 56 is connected to a filter 58. When the filter 58 has been used, it can be slid into the bag 56 without a user having contact with the filter 58, and the bag 56 will be sealed once the filter 58 is fully therein.
There are thus described filter arrangements, and also a method of controlling and subsequently purging the atmosphere in for instance a building or other area where CS gas is being used. The apparatus provides a method and apparatus for removing the solid particles causing the CS gas, and providing clean air for exhaust. The apparatus is of relatively straightforward construction and can thus be inexpensively manufactured for long term use.
A wide range of modifications may be made without departing from the scope of the invention. For instance different filtration arrangements or configurations could be used. A different range and/or type of filters could be used. Whilst described in relation to CS gas, apparatus according to the invention could be used in a wide range of different other applications.
Whilst endeavouring in the foregoing specification to draw attention to those features of the invention believed to be of particular importance it should be understood that the Applicant claims protection in respect of any patentable feature or combination of features hereinbefore referred to and/or shown in the drawings whether or not particular emphasis has been placed thereon.

Claims (23)

  1. Claims 1. A method of controlling an area during and after release of a material into the atmosphere in the area, the method including once it is required to purge the material from the area, applying suction to draw the atmosphere through a filtration arrangement, which filtration arrangement substantially removes solids from the atmosphere.
  2. 2. A method according to claim 1, in which the filtration arrangement includes any of HEPA, ULPA and/or carbon filters.
  3. 3. A method according to claims 1 or 2, in which prior to purging, reduced pressure is produced in the area to reduce any leakage of material therefrom.
  4. 4. A method according to claim 3, in which suction as applied during purging is applied at a lower level to provide the reduced pressure in the area.
  5. 5. A method according to any of the preceding claims, in which the purging suction is provided to run for a particular time, and then to automatically shut off.
  6. 6. A method according to claim 5, in which the particular time isadjustable.
  7. 7. A method according to any of the preceding claims, in which the filtration arrangement provides a safe change of filters, wherein a used filter media is received in a receptacle which is then sealed closed.
  8. 8. A method according to any of the preceding claims, in which closable outlet means are provide for the area.
  9. 9. A method according to claim 8, in which said outlet means are automatically opened upon purging of the area.
  10. 10. A method of controlling an area during and after release of CS gas, the method being according to any of the preceding claims.
  11. 11. Apparatus for purging the atmosphere in an area, the apparatus comprising a fan sucking gases into the apparatus, and a filtration arrangement for taking solids out of the gases which are sucked into the apparatus.
  12. 12. Apparatus according to claim 11, in which the filtration arrangement includes any of H EPA, ULPA and/or carbon filters.
  13. 13. Apparatus according to claims 11 or 12, in which the apparatus is arranged such that during purging the sucking fan automatically runs for a predetermined period of time.
  14. 14. Apparatus according to claim 13, in which the particular time isadjustable.
  15. 15. Apparatus according to any of claims 11 to 14, in which the apparatus comprises safe change filtration units, wherein a used filter is received in a receptacle which is then sealed closed.
  16. 16. Apparatus according to any of claims 11 to 15, in which the apparatus includes closable outlet means to the area which are operatively connected to the apparatus, such that upon purging of the area the outlet means are automatically opened.
  17. 17. Apparatus according to any of claims 11 to 16, in which the apparatus is configured such that the fan can suck at a reduced rate prior to purging to produce a reduced pressure in the area.
  18. 18. Apparatus for purging CS gas from an area, the apparatus be according to any of claims 1 Ito 17.
  19. 19. A method of controlling an area during and after release of a material into the atmosphere in the area, the method being substantially as hereinbefore described and with reference to the accompanying drawings.
  20. 20. A method of controlling an area during and after release of CS gas, the method being substantially as hereinbefore described and with reference to the accompanying drawings.
  21. 21. Apparatus for purging the atmosphere in an area, the apparatus being substantially as hereinbefore described and with reference to the accompanying drawings.
  22. 22. Apparatus for purging CS gas from an area, the apparatus being substantially as hereinbefore described and with reference to the accompanying drawings.
  23. 23. Any novel subject matter or combination including novel subject matter disclosed herein, whether or not within the scope of or relating to the same invention as any of the preceding claims.
GB0917102A 2009-09-30 2009-09-30 Purging the atmosphere in an area Withdrawn GB2474629A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0917102A GB2474629A (en) 2009-09-30 2009-09-30 Purging the atmosphere in an area

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0917102A GB2474629A (en) 2009-09-30 2009-09-30 Purging the atmosphere in an area

Publications (2)

Publication Number Publication Date
GB0917102D0 GB0917102D0 (en) 2009-11-11
GB2474629A true GB2474629A (en) 2011-04-27

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103574779A (en) * 2013-09-18 2014-02-12 广东德隆泓达塑料制品有限公司 Air purifying equipment
CN108548219A (en) * 2018-04-16 2018-09-18 吴国秋 A kind of air purification method based on photocatalyst
CN108758842A (en) * 2018-04-16 2018-11-06 吴国秋 A kind of photo-catalytic air cleaner
CN108905466A (en) * 2018-06-28 2018-11-30 刘艳 A kind of device for absorbing tail gas that environmental protection is produced with chemical industry benzyl alcohol
US11951432B2 (en) 2018-07-22 2024-04-09 Consair Oy Filter element

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2638644A (en) * 1947-10-25 1953-05-19 John R Rauhut Air-conditioning and humidifying apparatus
GB1089730A (en) * 1965-10-08 1967-11-08 Krantz Verwaltungs G M B H H An arrangement for inserting, holding and sealing exchangeable filters into discharge ducts for polluted air
US4580447A (en) * 1984-04-13 1986-04-08 The United States Of America As Represented By The Secretary Of The Army Function test equipment for smoke and gas munitions
US6962619B1 (en) * 2004-06-24 2005-11-08 Derosa Richard Air decontamination system
US20060021375A1 (en) * 2004-07-27 2006-02-02 Ait Innovations, Inc. Environmental control unit for hospital room

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2638644A (en) * 1947-10-25 1953-05-19 John R Rauhut Air-conditioning and humidifying apparatus
GB1089730A (en) * 1965-10-08 1967-11-08 Krantz Verwaltungs G M B H H An arrangement for inserting, holding and sealing exchangeable filters into discharge ducts for polluted air
US4580447A (en) * 1984-04-13 1986-04-08 The United States Of America As Represented By The Secretary Of The Army Function test equipment for smoke and gas munitions
US6962619B1 (en) * 2004-06-24 2005-11-08 Derosa Richard Air decontamination system
US20060021375A1 (en) * 2004-07-27 2006-02-02 Ait Innovations, Inc. Environmental control unit for hospital room

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103574779A (en) * 2013-09-18 2014-02-12 广东德隆泓达塑料制品有限公司 Air purifying equipment
CN108548219A (en) * 2018-04-16 2018-09-18 吴国秋 A kind of air purification method based on photocatalyst
CN108758842A (en) * 2018-04-16 2018-11-06 吴国秋 A kind of photo-catalytic air cleaner
CN108758842B (en) * 2018-04-16 2020-07-28 安徽徽光电子科技有限公司 Photocatalyst air purifier
CN108548219B (en) * 2018-04-16 2020-12-01 临沂文衡信息技术有限公司 Air purification method based on photocatalyst
CN108905466A (en) * 2018-06-28 2018-11-30 刘艳 A kind of device for absorbing tail gas that environmental protection is produced with chemical industry benzyl alcohol
CN108905466B (en) * 2018-06-28 2021-11-02 枣庄科技职业学院 Tail gas absorbing device of chemical industry benzyl alcohol production for environmental protection
US11951432B2 (en) 2018-07-22 2024-04-09 Consair Oy Filter element

Also Published As

Publication number Publication date
GB0917102D0 (en) 2009-11-11

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