EP0208664A1 - Vorrichtung um reine Luft in Räume einzublasen - Google Patents

Vorrichtung um reine Luft in Räume einzublasen Download PDF

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Publication number
EP0208664A1
EP0208664A1 EP86850150A EP86850150A EP0208664A1 EP 0208664 A1 EP0208664 A1 EP 0208664A1 EP 86850150 A EP86850150 A EP 86850150A EP 86850150 A EP86850150 A EP 86850150A EP 0208664 A1 EP0208664 A1 EP 0208664A1
Authority
EP
European Patent Office
Prior art keywords
air
supply
unit
supply means
wall
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
EP86850150A
Other languages
English (en)
French (fr)
Other versions
EP0208664B1 (de
Inventor
Bengt Ljungqvist
Claes G. Allander Allander
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.)
Astra Meditec AB
Original Assignee
Astra Meditec AB
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 Astra Meditec AB filed Critical Astra Meditec AB
Priority to AT86850150T priority Critical patent/ATE49465T1/de
Publication of EP0208664A1 publication Critical patent/EP0208664A1/de
Application granted granted Critical
Publication of EP0208664B1 publication Critical patent/EP0208664B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • A61G10/00—Treatment rooms or enclosures for medical purposes
    • A61G10/02—Treatment rooms or enclosures for medical purposes with artificial climate; with means to maintain a desired pressure, e.g. for germ-free rooms
    • 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
    • F24F3/167—Clean rooms, i.e. enclosed spaces in which a uniform flow of filtered air is distributed
    • 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
    • A61G2210/00—Devices for specific treatment or diagnosis
    • A61G2210/30—Devices for specific treatment or diagnosis for intensive care

Definitions

  • the present invention relates to an arrangement for blowing or injecting clean air into a room in which high requirements are placed on the cleanliness and purity of the air in the room, or in at least a part of the room.
  • rooms for which the invention is intended include operating theatres in hospitals and like health centres, and industrial clean rooms. In health centres efforts are made to keep down effectively the amount of particulate impurities carried by the air, and therewith the amount of airborne bacteria-carrying particles.
  • clean rooms are necessary in order to protect sensitive devices, for example in such cases as the manufacture of integrated circuits where dust particles can readily destroy a circuit.
  • This restricted working area may constitute an operating table in an operating theatre, or a working area in the manufacturing industry.
  • the primary object of the invention is to enable a given, desired low content of airborne particulate impurities (or alternatively gaseous impurities) to be maintained within a restricted cubic area of a room, or of a space in the room, for example on/around a surgical operating table or some other form of work surface, with the aid, among other things, of an obliquely and downwardly directed air shield or air curtain.
  • the problem upon which the invention is based resides in positively providing air-flow conditions around the obliquely located air curtain, produced with the aid of separate air-supply means in such a manner as to avoid effectively co-ejection of insufficiently clean air (for example air having a particle content which lies above the low level desired).
  • This object is achieved according to the invention with an arrangement of the kind mentioned in the introduction, which is characterized in that it comprises a substantially horizontal, ventilated ceiling unit which incorporates air-supply means effective to produce a uniformly distributed supply of air via the downwardly facing surface of the air-supply means of said unit; a substantially vertical ventilated wall unit, the upper edge of which adjoins a side-edge of the ceiling unit, this wall unit incorporating air-supply means effective to produce a uniformly distributed supply of air via that surface of the wall- unit air-supply means which faces in towards the space located beneath the ceiling..,unit; and in that separate air-supply means are arranged in the proximity of the intersection line between the air-supply surface of the ceiling unit and the air-supply surface of the wall assembly, or between the geometric extension of these surfaces, so as to produce an at least substantially oblique and downward supply of air through an air curtain or through a plurality of substantially mutually parallel air curtains.
  • the upper edge of the wall unit may be connected directly to the aforesaid side-edge of the ceiling unit. If the two units do not extend into direct abutment with one another, the aforesaid intersection line lies on the point of mutual intersection of the geometric extension of respective air-supply surfaces. When the ceiling unit and the wall unit terminate at a distance from the intersection line, it may be beneficial to place the separate air-supply means in prepisely this extension area or in the angular region outside the intersection line.
  • Embodiments of the arrangement according to the invention preferred for mutually different and having mutually different fields of application are set forth in the dependent Claims 2-9.
  • Claims 7-9 refer to a method in which the ceiling unit, the wall unit and associated air-supply means constitute parts of a box or cage structure, which can be incorporated in or placed in a surrounding locale.
  • the cage structure is provided with vertical side-walls which extend from opposing side-edges of the ceiling unit and which have vertical edge portions which connect with the wall unit.
  • This embodiment of the invention is particularly suited for use as a so-called operating-theatre cage in health centres.
  • Figure 1 illustrates an arrangement according to the invention schematically and in perspective, the obliquely and downwardly directed air flows from respective separate air-supply means being indicated by the long flow-arrows, and the supply of air over the ventilated wall unit being indicated by a plurality of horizontal short arrows extending from holes or apertures in the air-supply surface of the wall unit;
  • FIG. 1 illustrates in perspective a clean-air blower arrangement according to the invention.
  • the arrangement includes a horizontal ventilated ceiling unit 1 and a vertical ventilated wall unit 3, the upper edge 4 of which adjoins the side-edge 5 of the ceiling unit 1.
  • Clean air is blown or injected into the space beneath the downwardly facing surface 2 of the ceiling unit 2 and inwardly of the inner surface 6 of the wall unit, through a large number of holes or apertures 8 which are distributed uniformly over respective surfaces and from which the clean air issues in the form of air jets L.
  • the inner surface 6 of the wall unit 3 and the downwardly facing surface of the ceiling unit 1 are provided with similar air apertures 8.
  • the wall unit 3 and the ceiling unit 1 of this embodiment both have the form of a flat box-like chamber to which clean air is supplied from a clean-air supply system (not shown).
  • the clean air supply to the units 3 and 1 leaves the units in the form of air jets L through the apertures 8 located in the inwardly facing surface 6 and the downwardly facing surface 2 of respective units.
  • Figure 3 is a partial sectional view of an alternative embodiment of a clean-air blowing arrangement in accordance with the invention, particularly with regard to the connection of the ceiling unit 1 with the wall unit 3.
  • the separate air-supply means 7 comprises a single air-supply slot which extends parallel with the edges 4 and 5 and which is located on the intersection line S of the geometric extensions of the surfaces 2 and 6.
  • the clean air supplied issues from the slot 7 in the form of an obliquely and downwardly facing air curtain L .
  • Figure 4 is a vertical sectional view similar to that of Figure 3 and illustrates a further embodiment in which a separate air-supply device 10 is arranged in the angular region outwardly of the intersection line S at which the geometric extensions of the air-supply surfaces 2 and 6 of the mutually adjoining units 1 and 3 intersect.
  • the air-supply device 10 of this embodiment is connected to an air- supply system (not shown) and comprises an elongated, horizontally extending, hollow element of triangular cross-section, and is provided with two mutually parallel air-supply slots 7 in the forwardly located, oblique wall 9 of said separate air-supply means.
  • the clean air issuing from the slots 7 of the air-supply device 10 has the form of two substantially parallel air curtains L .
  • the air-supply device 10 may be given a cross-sectional shape other than triangular, without consequent impairment to the function of the air-supply means.
  • Figure 5 illustrates a further embodiment in which a horizontal air-slot 7 is provided in the upper part of the inner surface 6 of the wall unit 3, and in which two air-supply slots 7 parallel therewith are placed in the region where the downwardly facing surface of the ceiling unit 1 borders on the intersection line S.
  • the clean air leaves the slots 7 in the form of three mutually parallel air curtains L .
  • FIG 2 is a perspective illustration similar to that of Figure 1 and which illustrates schematically an air-blowing arrangement according to the invention in the form of a so-called surgical operating cage.
  • the ceiling unit 1, the wall unit 3, and the parallel air-supply slots 7 are incorporated in a cage structure placed in a surrounding locale and comprising vertical, parallel side-walls 16 which extend down from the two separated, parallel'side-edges of the ceiling unit projecting out from the wall urit 3.
  • the vertical side-wall 16 of the cage structure comprise air-impervious screening elements in the form, for example, of curtains, drapes or the like.
  • the ceiling unit 1 is provided on the side-edge 12 remote from the wall unit 3 with a box-shaped air-supply device 13, which is connected to an air-supply system not shown.
  • the air-supply device 13 has a downwardly facing, bottom air-supply surface 14 having provided therein two mutually parallel air-supply slots 15, through which air is blown downwardly from the air-supply means 13 in the form of a depending air curtain D, which forms opposite the wall unit 3 an "air-curtain wall" which closes-off the illustrated cage structure, which structure may constitute a surgical operating cage for example.

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • General Engineering & Computer Science (AREA)
  • Pulmonology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Surgery (AREA)
  • Biomedical Technology (AREA)
  • Ventilation (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Cleaning Or Drying Semiconductors (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Duct Arrangements (AREA)
EP86850150A 1985-04-26 1986-04-23 Vorrichtung um reine Luft in Räume einzublasen Expired - Lifetime EP0208664B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86850150T ATE49465T1 (de) 1985-04-26 1986-04-23 Vorrichtung um reine luft in raeume einzublasen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8502043A SE8502043D0 (sv) 1985-04-26 1985-04-26 Anordning for iblasning av ren luft i exempelvis operationsrum och s k renrum
SE8502043 1985-04-26

Publications (2)

Publication Number Publication Date
EP0208664A1 true EP0208664A1 (de) 1987-01-14
EP0208664B1 EP0208664B1 (de) 1990-01-10

Family

ID=20359989

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86850150A Expired - Lifetime EP0208664B1 (de) 1985-04-26 1986-04-23 Vorrichtung um reine Luft in Räume einzublasen

Country Status (5)

Country Link
EP (1) EP0208664B1 (de)
JP (1) JPS63501476A (de)
AT (1) ATE49465T1 (de)
DE (1) DE3668234D1 (de)
SE (1) SE8502043D0 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2000922C2 (nl) * 2007-10-11 2009-04-15 Tenbelis V O F Inrichting voor het conditioneren van de lucht in een deel van een ruimte.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3511162A (en) * 1969-02-20 1970-05-12 Johnson & Johnson Apparatus and method for isolating a patient zone
US3998142A (en) * 1975-07-03 1976-12-21 Sterilaire Medical, Inc. Air circulating system for ultra clean areas
DE2260380B2 (de) * 1972-12-09 1979-02-08 Brandi Ingenieure Gmbh, 5020 Frechen Verfahren zum Klimatisieren von Räumen
DE3228401A1 (de) * 1981-07-31 1983-02-17 Marco Milano Zambolin Verfahren und vorrichtung zur klimatisierung (air-conditioning) insbesondere von industrie-gebaeuden, mit einer reduzierung der dissipation durch zufuehrung von unter ueberdruck stehender luft und erheblicher verringerung des thermischen gefaelles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3511162A (en) * 1969-02-20 1970-05-12 Johnson & Johnson Apparatus and method for isolating a patient zone
DE2260380B2 (de) * 1972-12-09 1979-02-08 Brandi Ingenieure Gmbh, 5020 Frechen Verfahren zum Klimatisieren von Räumen
US3998142A (en) * 1975-07-03 1976-12-21 Sterilaire Medical, Inc. Air circulating system for ultra clean areas
DE3228401A1 (de) * 1981-07-31 1983-02-17 Marco Milano Zambolin Verfahren und vorrichtung zur klimatisierung (air-conditioning) insbesondere von industrie-gebaeuden, mit einer reduzierung der dissipation durch zufuehrung von unter ueberdruck stehender luft und erheblicher verringerung des thermischen gefaelles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2000922C2 (nl) * 2007-10-11 2009-04-15 Tenbelis V O F Inrichting voor het conditioneren van de lucht in een deel van een ruimte.

Also Published As

Publication number Publication date
ATE49465T1 (de) 1990-01-15
SE8502043D0 (sv) 1985-04-26
EP0208664B1 (de) 1990-01-10
DE3668234D1 (de) 1990-02-15
JPS63501476A (ja) 1988-06-09

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