EP0208664B1 - Vorrichtung um reine Luft in Räume einzublasen - Google Patents

Vorrichtung um reine Luft in Räume einzublasen Download PDF

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Publication number
EP0208664B1
EP0208664B1 EP86850150A EP86850150A EP0208664B1 EP 0208664 B1 EP0208664 B1 EP 0208664B1 EP 86850150 A EP86850150 A EP 86850150A EP 86850150 A EP86850150 A EP 86850150A EP 0208664 B1 EP0208664 B1 EP 0208664B1
Authority
EP
European Patent Office
Prior art keywords
air
supply
unit
wall unit
supply means
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.)
Expired - Lifetime
Application number
EP86850150A
Other languages
English (en)
French (fr)
Other versions
EP0208664A1 (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).
  • the above-mentioned object is achieved according to the invention with an arrangement for blowing clean air into a room in which high requirements are placed on the cleanliness of the air therein, or at least in a region of the room, for example in an operating theatre of a so-called industrial dean room, comprising a substantially horizontal, ventilated ceiling unit incorporating air-supply means for producing a uniformly distributed air supply via a downwardly facing surface of the air-supply means of the unit; characterized in that the arrangement includes a substantially vertical, ventilated wall unit having an upper edge which substantially adjoins a side-edge of the ceiling unit, and which wall unit incorporates air-supply means for producing a uniformly distributed supply of air through the air supply means of the wall unit in towards the space beneath the downwardly facing surface of the ceiling unit; and in that separate air-supply means for producing at least one substantially obliquely and downwardly directed air-supply through one or more substantially parallel air curtains, is arranged in the proximity of the intersection line between an air-supply surface of the ceiling unit
  • 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 precisely 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 an arrangement 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;
  • Figure 2 is a perspective and schematic illustration of an air-blowing arrangement according to the invention in the form of a surgical-operation cage;
  • Figures 3-5 are partial views in vertical section of various embodiments of connecting arrangements located in the region between the ceiling unit and the wall unit, and illustrate the manner in which the separate air-supply means can be arranged in this region.
  • 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 1 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 Lg.
  • 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 s .
  • 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 unit 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)
  • Combustion & Propulsion (AREA)
  • Pulmonology (AREA)
  • Biomedical Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Surgery (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)
  • Cleaning Or Drying Semiconductors (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Duct Arrangements (AREA)

Claims (9)

1. Eine Anordnung zum Blasen von reiner Luft (L, LS) in einen Raum, in dem hohe Anforderungen an die Reinheit der Luft darin oder mindestens in einem Bereich des Raumes, z. B. einem Operationssaal oder einem sogenannten industriellen Reinraum gestellt werden, mit einer im wesentlichen horizontalen, durchlüfteten Deckeneinheit (1), die Luftzuführmittel zur Erzeugung einer gleichförmig verteilten Luftzufuhr (L) über eine nach unten gerichtete Oberfläche (2) der Luftzufuhrmittel der Einheit enthält; dadurch gekennzeichnet, daß die Anordnung eine im wesentlichen vertikale, durchlüftete Wandeinheit (3) mit einer oberen Kante (4) aufweist, die im wesentlichen an eine Seitenkante (5) der Deckeneinheit angrenzt und wobei die Wandeinheit Luftzuführmittel zur Erzeugung einer gleichförmig verteilten Luftzufuhr (L) durch die Luftzuführmittel der Wandeinheit in den Raum unterhalb der nach unten gerichteten Oberfläche (6) der Deckeneinheit enthält; und daß getrennte Zuführmittel (7) zur Erzeugung mindestens einer im wesentlichen schräg und nach unten gerichteten Luftzufuhr (Ls) durch eine oder mehrere im wesentlichen parallele Luftschleier in der Nähe der Schnittlinie (S) zwischen einer Luftzuführoberfläche der Deckeneinheit und einer Luftzuführoberfläche der Wandeinheit oder zwischen den geometrischen Verlängerungen dieser Oberflächen angeordnet ist.
2. Eine Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß die im wesentlichen vertikale, durchlüftete Wandeinheit (3) und die im wesentlichen horizontale, durchlüftete Wandeinheit (1) jeweils mindestens eine plattenartige Kammer aufweisen, die einen Lufteinlaß zur Verbindung mit einem Luftzuführsystem und einen Luftauslaß in der Form einer großen Anzahl gleichmäßig verteilter Löcher/Öffnungen (8) enthält, die in der Kammerseitenwand vorgesehen sind, die die Luftzuführoberfläche der Einheit bilden.
3. Eine Anordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die getrennten Luftzuführmittel mindestens einen im wesentlichen horizontalen Luftzuführschlitz (7) aufweisen, der in der Luftzuführoberfläche der Deckeneinheit (1) und/oder der Wandeinheit (2) in einer relativ geringen Entfernung von der Schnittlinie (S) zwischen den Luftzuführoberflächen der entsprechenden Einheiten oder der geometrischen Verlängerungen dieser Oberflächen angeordnet ist.
4. Eine Anordnung nach Anspruch 3, dadurch gekennzeichnet, daß die Luftzuführmittel mindestens zwei parallele Luftzuführschlitze (7) aufweisen, die in einer der Luftzuführoberflächen angeordnet oder mit mindestens einem Schlitz in jeder Oberfläche oder in der Verlängerung der Oberflächen plaziert ist.
5. Eine Anordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die getrennten Luftzuführmittel einen oder mehrere parallele, im wesentlichen horizontale Luftzuführschlitze in einer Wand (9) einer getrennten Luftzuführvorrichtung (10) aufweisen, die im Winkelbereich außerhalb der Schnittlinie zwischen den Luftzuführoberflächen der entsprechenden Einheiten oder zwischen den entsprechenden geometrischen Verlängerungen der Einheiten angeordnet sind, wobei die Luftzuführvorrichtung zur Verbindung mit einem Luftzuführsystem angeordnet ist.
6. Eine Anordnung nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß die durchlüftete Wandeinheit und die durchlüftete Deckeneinheit jeweils eine Druckausgleichseinheit (11) aufweisen, durch die die zur Einheit zugeführte Luft auf ihrem Weg zu den in den Luftzuführoberflächen (6 und 2) der Einheiten angeordneten Löcher oder Öffnungen (8) strömen muß.
7. Eine Anordnung nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß die Deckeneinheit und die Wandeinheit zusammen mit ihren angeschlossenen getrennten Luftzuführmitteln Komponenten einer Käfigstruktur bilden, die in einem umgebenden Raum enthalten ist oder angeordnet werden kann und die vertikale Seitenwände (16) aufweist, die sich von der Deckeneinheit von deren von der Wandeinheit hervorstehenden Seitenkanten nach unten erstrecken und die mit der Wandeinheit an vertikalen Seitenkantenabschnitten verbunden sind.
8. Eine Anordnung nach Anspruch 7, dadurch gekennzeichnet, daß eine weitere Luftzuführvorrichtung (13) an der Seitenkante (12) der Deckeneinheit (1) entfernt von der Wandeinheit (3) angeordnet ist und dazu bestimmt ist; mit einem Luftzuführsystem verbunden zu werden, und eine nach unten gerichtete Luftzuführoberfläche (14) mit mindestens einem darin vorgesehen Luftzuführschlitz (15) darbietet, durch die Luft (D) von den weiteren Luftzuführmitteln in einer Weise geblasen wird, um einen herunterhängenden Luftschleier zu bilden, der gegenüber der Wandeinheit eine Luftschleierwand der Käfigstruktur bildet.
9. Eine Anordnung nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß die vertikalen Seitenwände (16) der Käfigstruktur luftundurchlässige Schirmelemente wie z. B. sämtliche Arten von hängenden Vorhängen, Schirmen, Tüchern, verschiebbaren Panelen und ähnlichen Vorrichtungen, z. B. Vorhänge aus Kunststoffolie aufweisen.
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
SE8502043 1985-04-26
SE8502043A SE8502043D0 (sv) 1985-04-26 1985-04-26 Anordning for iblasning av ren luft i exempelvis operationsrum och s k renrum

Publications (2)

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

Families Citing this family (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.

Family Cites Families (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
DE2260380C3 (de) * 1972-12-09 1979-10-04 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
IT8123283A0 (it) * 1981-07-31 1981-07-31 Marco Zambolin Sistema di recupero calore perdestratificazione, sovrapressione ed isolamento termico mediante distribuzione di aria a temperatura esterna nella parte superiore di edifici industriali.

Also Published As

Publication number Publication date
SE8502043D0 (sv) 1985-04-26
ATE49465T1 (de) 1990-01-15
EP0208664A1 (de) 1987-01-14
JPS63501476A (ja) 1988-06-09
DE3668234D1 (de) 1990-02-15

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