EP0155924A2 - Unité à rideau d'air - Google Patents

Unité à rideau d'air Download PDF

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Publication number
EP0155924A2
EP0155924A2 EP85850099A EP85850099A EP0155924A2 EP 0155924 A2 EP0155924 A2 EP 0155924A2 EP 85850099 A EP85850099 A EP 85850099A EP 85850099 A EP85850099 A EP 85850099A EP 0155924 A2 EP0155924 A2 EP 0155924A2
Authority
EP
European Patent Office
Prior art keywords
curtaining
nozzle
unit
air
air stream
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Withdrawn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
EP85850099A
Other languages
German (de)
English (en)
Other versions
EP0155924A3 (fr
Inventor
George Bernhard Dhenstrand
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.)
Bahco Ventilation AB
Original Assignee
Bahco Ventilation 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 Bahco Ventilation AB filed Critical Bahco Ventilation AB
Publication of EP0155924A2 publication Critical patent/EP0155924A2/fr
Publication of EP0155924A3 publication Critical patent/EP0155924A3/fr
Withdrawn legal-status Critical Current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
    • F24F9/00—Use of air currents for screening, e.g. air curtains
    • 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
    • F24F13/24—Means for preventing or suppressing noise

Definitions

  • the invention relates to an air stream-generating curtaining unit which is arranged to be included as one of several similar curtaining units in an air curtaining installation, which has the curtaining units situated in a row for the common generation of an air curtain in connection with a wall opening.
  • the curtaining unit has a fan unit arranged in a casing.
  • the casing has inlets and outlets for an air stream generated by the fan unit and forming part of the common air curtain.
  • the object of the invention is to achieve a curtaining unit which satisfies severe requirements on both flow distribution and quiet operation.
  • the curtaining unit 1 is disposed for being included as one of several similar units in an air curtaining installation, which has the curtaining units situated in a row for commonly generating an air curtain.
  • Fig. 2 schematically illustrates an example of such an arrangement of two curtaining units, one on top of the other, for the formation of a curtain with a transverse draught.
  • the deflected air stream is directed towards a catcher screen 3 joined to the curtaining unit.
  • Both screens 2, 3 are made up from articulately connected wall elements with windows 4.
  • Each curtaining element 1 comprises a casing 5 (Figs. 1 and 3 - 5) which inter alia enclose, a fan unit 6 supplying its part of the air stream forming the air curtain.
  • the casing 5 has an inlet 7, open in several directions, and an outlet 8 for this partial air stream.
  • the outlet 8 of the curtaining unit 1 has the shape of a slit or slot, and is provided with a combined air silencer and air distribution means with an air supply nozzle 9.
  • This air supply nozzle, opening out in the outlet 8 has a substantially rectangular through-flow cross section with long sides 10 extending along the curtaining unit's substantially entire curtain-forming length 11 and with short sides 12 which have varying length, from a greatest length at the incoming end of the nozzle to a least length at the outlet 8 thereof.
  • One defining wall 13 of the nozzle, forming one of the long sides 10 in the through-flow cross section, has its profile extending in the flow direction of the partial air stream provided with a convex shape seen from the inside of the supply air nozzle.
  • This wall 13 and the opposing defining wall 14 of the nozzle each define a side of a box 15 filled with sound insulating porous material, one on either side of the nozzle.
  • Each box 15 is intended to serve as a combined resistive and reactive silencer and its only open communication with the nozzle 9 is via a perforated portion 16, which is centrally situated on the respective defining wall 13, 14, these walls being otherwise unpierced. There is thus obtained an unpierced entry portion 17 for the partial air stream to the nozzle. There are also unpierced end portions 18 on the walls 13, 14 adjacent the inlet 8.
  • the unpierced convex entry portion is favourable both from the aspects of sound and flow technology, and from the distribution point of view this enables the use of a fan unit 6 with two centrifugal fans 19 situated at rather a large distance from each other, the casing outlets 20 of which are directly connected to the inlet end of the nozzle 9:
  • the convex profile of the defining wall 13 described above may be curved for the whole of its length, with a radius of curvature increasing continuously from the entry portion 17 towards the outlet 8, or with substantially only the entry portion in a convex curve and its remaining part linear.
  • the profile at the nozzle outlet may suitably be a tangent to a line parallel to the profile of the opposing wall 14.
  • the defining wall 14 is illustrated as being flat. This embodiment is based on the fans 19 being of centrifugal type and that they are provided with spiral casings 21 with the resulting air stream characteristic for such casings.
  • the flat defining wall is in this case arranged nearest the respective rotational axis 22 of the fans.
  • the inlet opening of the nozzle 9 is blanked off to the extent it has not been used by the fan outlets 20.
  • the walls 24 thus obtained form, together with the outer walls of the casing, a fan chamber having a back wall 25 situated in spaced relation to the remaining walls, and carried by rails 26 at its corners to form the inlet 7 of the fan chamber.
  • the entire fan chamber is clad with sound-insulating material and a pair of baffles 27 provided with insulation material are also arranged at the inlet openings.
  • the nozzle may suitably be formed with two mutually opposing walls formed as the illustrated wall 13, i.e. the flat wall 14 replaced by a convex wall.
  • the curtaining unit may have one or more further outlet slits (not shown) parallel to the outlet slit 8 and each formed with a nozzle of the kind described.
  • a member with a cross section in the form of a tear-drop may be arranged to connect up with the wall 14, as indicated in Fig. 3 by dashed lines extending the shape of the cylinder 23.
  • the curtain installation illustrated in Fig. 2 is also suitably provided with an (unillustrated) roof, covering the passage between both curtaining units 1 and the catcher screen 3 on one side and the return deflection screen 2 on the other side.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Ventilation (AREA)
  • Duct Arrangements (AREA)
  • Curtains And Furnishings For Windows Or Doors (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
EP85850099A 1984-03-21 1985-03-20 Unité à rideau d'air Withdrawn EP0155924A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8401574 1984-03-21
SE8401574A SE444975B (sv) 1984-03-21 1984-03-21 Luftridaenhet

Publications (2)

Publication Number Publication Date
EP0155924A2 true EP0155924A2 (fr) 1985-09-25
EP0155924A3 EP0155924A3 (fr) 1986-01-22

Family

ID=20355235

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85850099A Withdrawn EP0155924A3 (fr) 1984-03-21 1985-03-20 Unité à rideau d'air

Country Status (2)

Country Link
EP (1) EP0155924A3 (fr)
SE (1) SE444975B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3940277C1 (en) * 1989-12-06 1991-03-21 Teddington Controls Gmbh, 5202 Hennef, De Sound damping structure - has silencer body with acoustic lining and contg. profiled and absorber
US5788568A (en) * 1995-08-25 1998-08-04 Mitsubishi Denki Kabushiki Kaisha Fan
US20120276832A1 (en) * 2011-04-29 2012-11-01 H. Opdam Management B.V. Air Curtain, And A Vehicle Provided With Such An Air Curtain
IT202100011510A1 (it) * 2021-05-05 2022-11-05 Marco Zambolin "elemento modulare per barriere a lama d'aria, barriera a lama d'aria dinamica e processo per la realizzazione dello stesso"

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR322463A (fr) * 1902-06-26 1903-02-05 Mortier Paul Perfectionnement au ventilateur diamétral, système mortier
CH335864A (de) * 1955-10-28 1959-01-31 Sulzer Ag Einrichtung zur Verringerung des Geräuschaustrittes aus kompressible Medien führenden Leitungen
FR1283147A (fr) * 1960-03-11 1962-01-27 Colchester Woods Silencieux
DE1154252B (de) * 1957-06-08 1963-09-12 Rudolf Sterkel Abschirmung von Raumoeffnungen durch einen Luftschleier
CH382363A (de) * 1956-12-07 1964-09-30 Laing Nikolaus Heizlüfter
US3215058A (en) * 1962-10-15 1965-11-02 King Company Air curtain apparatus
GB1125673A (en) * 1967-01-27 1968-08-28 Conditionaire Australia Pty Lt Improvements in air screen creating, air conditioning apparatus
GB1214829A (en) * 1967-12-11 1970-12-02 Minikay Ltd Air curtain
DE1951115A1 (de) * 1969-10-10 1971-04-22 Zenkner Kurt Dr Ing Querstromgeblaese
GB1570074A (en) * 1977-07-13 1980-06-25 British Gas Corp Ventilators
EP0058782A1 (fr) * 1981-02-24 1982-09-01 Stichting Ontwikkeling Koeltechniek Bâtiment d'entreposage frigorifique

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR322463A (fr) * 1902-06-26 1903-02-05 Mortier Paul Perfectionnement au ventilateur diamétral, système mortier
CH335864A (de) * 1955-10-28 1959-01-31 Sulzer Ag Einrichtung zur Verringerung des Geräuschaustrittes aus kompressible Medien führenden Leitungen
CH382363A (de) * 1956-12-07 1964-09-30 Laing Nikolaus Heizlüfter
DE1154252B (de) * 1957-06-08 1963-09-12 Rudolf Sterkel Abschirmung von Raumoeffnungen durch einen Luftschleier
FR1283147A (fr) * 1960-03-11 1962-01-27 Colchester Woods Silencieux
US3215058A (en) * 1962-10-15 1965-11-02 King Company Air curtain apparatus
GB1125673A (en) * 1967-01-27 1968-08-28 Conditionaire Australia Pty Lt Improvements in air screen creating, air conditioning apparatus
GB1214829A (en) * 1967-12-11 1970-12-02 Minikay Ltd Air curtain
DE1951115A1 (de) * 1969-10-10 1971-04-22 Zenkner Kurt Dr Ing Querstromgeblaese
GB1570074A (en) * 1977-07-13 1980-06-25 British Gas Corp Ventilators
EP0058782A1 (fr) * 1981-02-24 1982-09-01 Stichting Ontwikkeling Koeltechniek Bâtiment d'entreposage frigorifique

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3940277C1 (en) * 1989-12-06 1991-03-21 Teddington Controls Gmbh, 5202 Hennef, De Sound damping structure - has silencer body with acoustic lining and contg. profiled and absorber
US5788568A (en) * 1995-08-25 1998-08-04 Mitsubishi Denki Kabushiki Kaisha Fan
US20120276832A1 (en) * 2011-04-29 2012-11-01 H. Opdam Management B.V. Air Curtain, And A Vehicle Provided With Such An Air Curtain
IT202100011510A1 (it) * 2021-05-05 2022-11-05 Marco Zambolin "elemento modulare per barriere a lama d'aria, barriera a lama d'aria dinamica e processo per la realizzazione dello stesso"
EP4086529A1 (fr) 2021-05-05 2022-11-09 Marco Zambolin Élément modulaire pour barrières à rideau d'air, barrière à rideau d'air dynamique et procédé pour sa fabrication

Also Published As

Publication number Publication date
SE8401574D0 (sv) 1984-03-21
SE444975B (sv) 1986-05-20
EP0155924A3 (fr) 1986-01-22
SE8401574L (sv) 1985-09-22

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PUAL Search report despatched

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18D Application deemed to be withdrawn

Effective date: 19860923

RIN1 Information on inventor provided before grant (corrected)

Inventor name: DHENSTRAND, GEORGE BERNHARD