EP0372784A3 - Apparatus for providing a clean air zone - Google Patents

Apparatus for providing a clean air zone Download PDF

Info

Publication number
EP0372784A3
EP0372784A3 EP19890312317 EP89312317A EP0372784A3 EP 0372784 A3 EP0372784 A3 EP 0372784A3 EP 19890312317 EP19890312317 EP 19890312317 EP 89312317 A EP89312317 A EP 89312317A EP 0372784 A3 EP0372784 A3 EP 0372784A3
Authority
EP
European Patent Office
Prior art keywords
air
diffuser
zone
central
areas
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.)
Granted
Application number
EP19890312317
Other languages
German (de)
French (fr)
Other versions
EP0372784A2 (en
EP0372784B1 (en
Inventor
Frederick Hugh Howorth
Nigel Hugh Howorth
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 AT89312317T priority Critical patent/ATE96218T1/en
Publication of EP0372784A2 publication Critical patent/EP0372784A2/en
Publication of EP0372784A3 publication Critical patent/EP0372784A3/en
Application granted granted Critical
Publication of EP0372784B1 publication Critical patent/EP0372784B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G13/00—Operating tables; Auxiliary appliances therefor
    • A61G13/10—Parts, details or accessories
    • A61G13/108—Means providing sterile air at a surgical operation table or area
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F13/068—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser formed as perforated walls, ceilings or floors
    • 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
    • F24F3/16—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 purification, e.g. by filtering; by sterilisation; by ozonisation
    • F24F3/163—Clean air work stations, i.e. selected areas within a space which filtered air is passed

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Ventilation (AREA)
  • Duct Arrangements (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

Apparatus for providing a clean air zone, for example in a hospital operating theatre or microbiological clean room comprises a housing (30) preferably mounted above the zone and having a plenum chamber (P) and a fan and filter means (89, 52) operative to supply air, e.g. from inlets (39), to the plenum chamber, as well as diffuser means (40) in the form of one or more perforated plates (60, 64) arranged below the chamber so that air flows out therethrough. In order to reliably ensure a downward and outward air flow pattern, without the need for temperature controls or differential air velocities, so that influx of airborne contaminants to the sterile zone is precluded, the central diffuser area (60) is planar and successive peripheral diffuser areas (72, 73) are arranged at increasing greater angles relative to the central area so that each increasingly deflects the air outwards, e.g. at 5 DEG , 15 DEG or more, from the central downflow. Advantageously the peripheral diffuser areas (perforate) and intervening imperforate areas serving as deflector vanes are formed integrally as adjacent regions of specially corrugated elongate panels (63).
EP89312317A 1988-12-02 1989-11-28 Apparatus for providing a clean air zone Expired - Lifetime EP0372784B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89312317T ATE96218T1 (en) 1988-12-02 1989-11-28 DEVICE FOR SUPPLYING A CLEAN AIR ZONE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB888828127A GB8828127D0 (en) 1988-12-02 1988-12-02 Apparatus for providing clean air zone
GB8828127 1988-12-02

Publications (3)

Publication Number Publication Date
EP0372784A2 EP0372784A2 (en) 1990-06-13
EP0372784A3 true EP0372784A3 (en) 1991-01-02
EP0372784B1 EP0372784B1 (en) 1993-10-20

Family

ID=10647832

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89312317A Expired - Lifetime EP0372784B1 (en) 1988-12-02 1989-11-28 Apparatus for providing a clean air zone

Country Status (7)

Country Link
EP (1) EP0372784B1 (en)
JP (1) JPH02187548A (en)
AT (1) ATE96218T1 (en)
AU (1) AU4558789A (en)
DE (1) DE68910091D1 (en)
GB (1) GB8828127D0 (en)
HU (1) HUT55900A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE512255C2 (en) * 1991-07-01 2000-02-21 Flaekt Ab Apparatus for eliminating vortexing in corners in laminar air flow spaces and use of the apparatus
NO934439D0 (en) * 1993-12-06 1993-12-06 Aet Arbeidsmiljoe Og Energitek Device at ceiling mounted ventilation system
GB9421303D0 (en) * 1994-10-22 1994-12-07 Howorth Airtech Ltd Clean air system
US20100120349A1 (en) * 2008-10-31 2010-05-13 Airsonett Ab Surgical theater ventilating devices and methods
JP5626588B2 (en) * 2010-03-29 2014-11-19 清水建設株式会社 Air conditioning system
US8733060B2 (en) 2010-09-09 2014-05-27 Tate Access Floors Leasing, Inc. Directional grate access floor panel
US10058012B2 (en) 2010-12-17 2018-08-21 Tate Access Flooring Leasing, Inc. Multizone variable damper for use in an air passageway
FR2979006B1 (en) * 2011-08-08 2013-09-06 Aaf Sa BLOWING DEVICE, IN PARTICULAR FOR AN OPERATIVE BLOCK.
JP5877721B2 (en) * 2012-01-17 2016-03-08 大成建設株式会社 Operating room air conditioning system
JP6481283B2 (en) * 2014-08-19 2019-03-13 株式会社大林組 Operating room
ES2800398B2 (en) * 2020-05-06 2021-06-17 Metalfaber Slu Modular partition for insulation of environments by positive pressure of laminar flow
CN115200198B (en) * 2021-04-14 2024-01-23 韦氏（苏州）医疗科技有限公司 Assembled centralized air supply equipment

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB601239A (en) * 1945-05-18 1948-04-30 Sturtevant Eng Co Ltd Improvements in or relating to air diffusers for ventilating and air conditioning plant
US3356006A (en) * 1965-10-18 1967-12-05 Robert D Scott Clean room structure
DE2013244A1 (en) * 1969-03-19 1970-10-01 Aktiebolaget Svenska Fläktfabriken, Nacka (Schweden) Air supply device for the injection of preferably cold ventilation air
US3935803A (en) * 1972-10-12 1976-02-03 Flanders Filters, Inc. Air filtration apparatus
DE2836820A1 (en) * 1978-08-23 1980-03-06 Zinon Dr Med Duvlis Ventilating duct for sterile operating zone - has sloping sides with vanes forming outer flow around main flow from central grid
GB2120778A (en) * 1982-05-20 1983-12-07 Howorth Air Eng Ltd Outlet device for an air conditioning system
WO1986002711A1 (en) * 1984-11-01 1986-05-09 Total Air, Inc. Gaseous fluid distribution devices

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB601239A (en) * 1945-05-18 1948-04-30 Sturtevant Eng Co Ltd Improvements in or relating to air diffusers for ventilating and air conditioning plant
US3356006A (en) * 1965-10-18 1967-12-05 Robert D Scott Clean room structure
DE2013244A1 (en) * 1969-03-19 1970-10-01 Aktiebolaget Svenska Fläktfabriken, Nacka (Schweden) Air supply device for the injection of preferably cold ventilation air
US3935803A (en) * 1972-10-12 1976-02-03 Flanders Filters, Inc. Air filtration apparatus
DE2836820A1 (en) * 1978-08-23 1980-03-06 Zinon Dr Med Duvlis Ventilating duct for sterile operating zone - has sloping sides with vanes forming outer flow around main flow from central grid
GB2120778A (en) * 1982-05-20 1983-12-07 Howorth Air Eng Ltd Outlet device for an air conditioning system
WO1986002711A1 (en) * 1984-11-01 1986-05-09 Total Air, Inc. Gaseous fluid distribution devices

Also Published As

Publication number Publication date
AU4558789A (en) 1990-06-07
DE68910091D1 (en) 1993-11-25
EP0372784A2 (en) 1990-06-13
HUT55900A (en) 1991-06-28
EP0372784B1 (en) 1993-10-20
GB8828127D0 (en) 1989-01-05
ATE96218T1 (en) 1993-11-15
JPH02187548A (en) 1990-07-23
HU896322D0 (en) 1990-02-28

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