EP0306047A2 - Plafond encastré pour admission d'air avec jet d'air de soutien - Google Patents

Plafond encastré pour admission d'air avec jet d'air de soutien Download PDF

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Publication number
EP0306047A2
EP0306047A2 EP88114373A EP88114373A EP0306047A2 EP 0306047 A2 EP0306047 A2 EP 0306047A2 EP 88114373 A EP88114373 A EP 88114373A EP 88114373 A EP88114373 A EP 88114373A EP 0306047 A2 EP0306047 A2 EP 0306047A2
Authority
EP
European Patent Office
Prior art keywords
supply air
nozzles
built
ceiling
grid
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
EP88114373A
Other languages
German (de)
English (en)
Other versions
EP0306047B1 (fr
EP0306047A3 (en
Inventor
Gerhard Neuhaus
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.)
Weiss Klimatechnik GmbH
Original Assignee
Weiss Klimatechnik GmbH
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 Weiss Klimatechnik GmbH filed Critical Weiss Klimatechnik GmbH
Priority to AT88114373T priority Critical patent/ATE71208T1/de
Publication of EP0306047A2 publication Critical patent/EP0306047A2/fr
Publication of EP0306047A3 publication Critical patent/EP0306047A3/de
Application granted granted Critical
Publication of EP0306047B1 publication Critical patent/EP0306047B1/fr
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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/02—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation having means for ventilation or vapour discharge
    • 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

Definitions

  • the invention relates to a built-in supply air ceiling for a sterile room with an air box which is rectangular in cross section and which has an air inlet connector in a side wall and carries a grid of narrow support elements on the open underside, a flat perforated plate with holes in each grid formed by the grid is kept horizontal for the supply air outlet from the air box and at least one tubular nozzle penetrating the perforated plate is attached to at least one perforated plate.
  • a built-in supply air ceiling known for example from German patent specification 26 15 904 is particularly suitable for conditioning the air in an operating room of a hospital or in a similar sterile room.
  • large-area lights are required to adequately illuminate the operating table and the operating field, which hang freely in the room and thus fully in the supply air flow from the supply air ceiling.
  • the relatively large-volume body of these lights deflects part of the supply air flow laterally from its flow direction towards the operating area and thus affects not only the stability of the supply air flow, but also its sterility because, if only a small proportion, possibly contaminated indoor air enters the supply air flow is induced.
  • the invention is therefore intended to provide a built-in supply air ceiling in which the sterile supply air flow emerging from it is practically not influenced by operating lights or similar obstacles hanging freely in the room.
  • perforated plates each have at least one nozzle each, the nozzles being arranged overall along an ellipse or a circle.
  • individual support jets emerging from the nozzles are embedded in a ring shape distributed in the laminar flow emanating from the supply air ceiling and stabilize against the cross currents due to the slow laminar flow from the holes in the perforated plates due to the desired draft have an effect.
  • Luminaires hanging from the ceiling can be accommodated in the core area of the flow surrounded by the support beams and thus no longer influence the support beams.
  • each of the nozzles is directed essentially tangentially to a spiral extending downward from the supply air ceiling. This creates a slight swirl in the laminar flow, which also has a stabilizing effect. This also results in an essentially vortex-free flow around voluminous, large-area lights, such as are given, for example, in the form of operating lights, which reduces the risk of air circulation induction into the flow.
  • the nozzles are preferably directed along a truncated cone shell which expediently widens downward, the removal of contaminants arising in the operating area is supported to the outside.
  • the flow out of the holes can be narrowed to a particularly important area if the nozzles are directed along a truncated cone shell which tapers downwards.
  • the holes in the perforated plates each have a diameter of approximately 3 mm and a mutual spacing of approximately 15 mm, and if the free cross section of the entirety of the holes is approximately 3.4% of the perforated plate field.
  • the supply air ceiling designated as a whole by 1 is composed of four rows 2, 3, 4, 5 of 5 perforated plates 21... 25, each of which is suspended horizontally in a grid of a grid formed by support elements fastened to one another.
  • Each perforated plate is provided with a number of circular holes, from which sterile supply air can escape downwards as a source flow.
  • the perforated plates 21 ... 25 have a square underside corresponding to a grid dimension of, for example, 600 ⁇ 600 mm. Accordingly, the supply air ceiling 1 shown in FIG. 1 covers an area of 3 ⁇ 3 m.
  • the distribution of the holes over the totality of the perforated plates forming the supply air ceiling 1 is such that the perforated field defined by the totality of the holes has an elliptical outer boundary 10 in the embodiment of the supply air ceiling 1 shown in FIG.
  • some perforated plates for example perforated plate 23, are provided with holes uniformly over their underside, while other perforated plates such as perforated plates 21, 22 and 25, 24 are only partially perforated, so that the composition of perforated ceiling 1 is as in FIG. 1 shown the elliptical limitation 10 results.
  • a central plate 11 is suspended in the grid, which has no perforations, but is provided for carrying out a holding rod, not shown, for operating lights.
  • This square core plate 11 is surrounded on all sides by perforated plates 32, 33, 34 and 42, 43, 44, each of which carries a tubular nozzle.
  • Each of the nozzles has a shape, as is explained in German Patent 24 57 984, from which the type of attachment of the nozzles can also be found. For a better clarity of the illustration, only the passage cross sections of the nozzles in the plane of the supply air ceiling 1 are given.
  • each of the nozzles 62, 63, 64, 72, 73, 74 in the associated perforated plates 32, 33, 34, 42, 43, 44 is directed downward into the operating room and preferably makes an angle of with the lower surface of the supply air ceiling 1 about 50 °. So far, in the case of supply air ceilings in which there are several nozzles, all the nozzles have been aligned in parallel, the direction of the longitudinal axis of the individual tubular nozzles differs from nozzle to nozzle. The directions point tangentially to an imaginary spiral starting from the core area of the supply air ceiling and which has a slightly elliptical cross section in the example according to FIG. 1.
  • the projection of the direction of the support jet emerging from one of the nozzles onto the underside of the supply air ceiling 1 is indicated by the arrows in FIG. 1 for each nozzle.
  • the supply air jets impart a clockwise swirl to the entire supply air field emerging from the perforated field when viewed in FIG. 1, so that the supply air volume emerging from the supply air ceiling 1 is set into a spiral movement directed into the operating room around the plate 11 as the core .
  • Operating lights are therefore located entirely inside the supply air field delimited by the elliptical boundary 10, so that disturbances in the flow of the supply air volume caused by them can neither influence the introduction of sterile supply air to the operating field nor can it induce contaminated air from the vicinity of the supply air ceiling 1.
  • FIG. 2 shows an embodiment of the invention in which the boundary 12 of the perforated field is circular. Accordingly, the supply air ceiling also contains a further row 6 of perforated plates compared to the exemplary embodiment according to FIG. 1. Also in the exemplary embodiment illustrated in FIG. 2, the perforated plates surrounding the central plate 11 each have a support jet nozzle, the direction of which is tangential to a spiral in the operating room with circular cross section. The projections of the resulting directions of the support jets emerging from the nozzles onto the supply air ceiling 7 are each indicated by arrows. As in the exemplary embodiment explained above, the nozzles generate a swirl in a clockwise direction in the supply air volume which emerges from the circular perforated field.

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Architecture (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Biomedical Technology (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Surgery (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Duct Arrangements (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Supports For Pipes And Cables (AREA)
  • Other Air-Conditioning Systems (AREA)
EP88114373A 1987-09-03 1988-09-02 Plafond encastré pour admission d'air avec jet d'air de soutien Expired - Lifetime EP0306047B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88114373T ATE71208T1 (de) 1987-09-03 1988-09-02 Einbau-zuluftdecke mit stuetzstrahl.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8711938U 1987-09-03
DE8711938U DE8711938U1 (de) 1987-09-03 1987-09-03 Einbau-Zuluftdecke mit Stützstrahl

Publications (3)

Publication Number Publication Date
EP0306047A2 true EP0306047A2 (fr) 1989-03-08
EP0306047A3 EP0306047A3 (en) 1990-04-11
EP0306047B1 EP0306047B1 (fr) 1992-01-02

Family

ID=6811706

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88114373A Expired - Lifetime EP0306047B1 (fr) 1987-09-03 1988-09-02 Plafond encastré pour admission d'air avec jet d'air de soutien

Country Status (3)

Country Link
EP (1) EP0306047B1 (fr)
AT (1) ATE71208T1 (fr)
DE (2) DE8711938U1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1469824A (fr) * 1966-02-22 1967-02-17 Dispositif pour ventiler des locaux propres
DE1454546A1 (de) * 1963-10-19 1969-01-23 Bursell Claes Goeran Birger Anordnung einer elektrischen Deckenleuchte und der Fassung einer Belueftungsoeffnung
DE2260380A1 (de) * 1972-12-09 1974-06-12 Brandi Ingenieure Gmbh Verfahren und vorrichtung zum klimatisieren von operationsraeumen oder dgl
DE2457984A1 (de) * 1974-12-07 1976-06-16 Brandi Ingenieure Gmbh Vorrichtung zum klimatisieren von operationsraeumen o.dgl.
DE3331299A1 (de) * 1983-08-31 1985-03-14 Heinz Dipl.-Ing. 4390 Gladbeck Hölter Verfahren und vorrichtung zur gezielten reinluftzufuehrung in das operationsfeld
DE2615904C3 (de) * 1976-04-10 1985-06-05 Weiss Technik GmbH Umwelt-Klima-Messtechnik, 6301 Reiskirchen Zuluftdecke zum Klimatisieren von Operationssälen u.dgl.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1454546A1 (de) * 1963-10-19 1969-01-23 Bursell Claes Goeran Birger Anordnung einer elektrischen Deckenleuchte und der Fassung einer Belueftungsoeffnung
FR1469824A (fr) * 1966-02-22 1967-02-17 Dispositif pour ventiler des locaux propres
DE2260380A1 (de) * 1972-12-09 1974-06-12 Brandi Ingenieure Gmbh Verfahren und vorrichtung zum klimatisieren von operationsraeumen oder dgl
DE2457984A1 (de) * 1974-12-07 1976-06-16 Brandi Ingenieure Gmbh Vorrichtung zum klimatisieren von operationsraeumen o.dgl.
DE2615904C3 (de) * 1976-04-10 1985-06-05 Weiss Technik GmbH Umwelt-Klima-Messtechnik, 6301 Reiskirchen Zuluftdecke zum Klimatisieren von Operationssälen u.dgl.
DE3331299A1 (de) * 1983-08-31 1985-03-14 Heinz Dipl.-Ing. 4390 Gladbeck Hölter Verfahren und vorrichtung zur gezielten reinluftzufuehrung in das operationsfeld

Also Published As

Publication number Publication date
EP0306047B1 (fr) 1992-01-02
DE3867390D1 (de) 1992-02-13
EP0306047A3 (en) 1990-04-11
DE8711938U1 (de) 1987-11-12
ATE71208T1 (de) 1992-01-15

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