EP0362958B1 - Luftvorhanggerät - Google Patents

Luftvorhanggerät Download PDF

Info

Publication number
EP0362958B1
EP0362958B1 EP89202490A EP89202490A EP0362958B1 EP 0362958 B1 EP0362958 B1 EP 0362958B1 EP 89202490 A EP89202490 A EP 89202490A EP 89202490 A EP89202490 A EP 89202490A EP 0362958 B1 EP0362958 B1 EP 0362958B1
Authority
EP
European Patent Office
Prior art keywords
air
outflow
opening
housing
guide elements
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
EP89202490A
Other languages
English (en)
French (fr)
Other versions
EP0362958A1 (de
Inventor
Petrus Josephus Joannes Hubertus Ir. Ligtenberg
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.)
Fh Biddle Bv
Original Assignee
Fh Biddle Bv
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=19852991&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0362958(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Fh Biddle Bv filed Critical Fh Biddle Bv
Priority to AT89202490T priority Critical patent/ATE88805T1/de
Publication of EP0362958A1 publication Critical patent/EP0362958A1/de
Application granted granted Critical
Publication of EP0362958B1 publication Critical patent/EP0362958B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F24F13/075—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser having parallel rods or lamellae directing the outflow, e.g. the rods or lamellae being individually adjustable
    • 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

Definitions

  • the invention relates to an air curtain device as described in the preamble of claim 1.
  • Such a device is known from US-A-3 229 609 and is generally used in the passage openings of buildings, for instance shops and department stores.
  • the air curtain generated by the device at the location of the passage opening is intended to maintain a separation between the climate in the building and the climate outside it. Due to the air curtain it is possible to have a visually completely free passage opening, without the energy loss resulting from the escape of for instance heated or cooled air from the building assuming inadmissible proportions.
  • the air flowing out of the air outflow opening of the device is itself usually heated or cooled. Since at least some air escapes from a building, for instance through gaps and ventilation openings, air from outside the building will flow inside at the location of the passage opening into the building. This air is hereby mixed with the air of the air curtain, so that this is brought to the desired temperature. In this way a considerable portion of the energy used to bring the air in the air curtain to the desired temperature is to the benefit of the interior climate of the building.
  • the invention has for its object to provide an air curtain device of the kind described above, which operates with a minimum of energy loss.
  • a further advantage of this embodiment occurs in combination with the characterizing steps of claim 3. Since in the lengthwise direction the fans have outlet openings lying at a mutual distance, the air supply at the level of the fans is not uniform. It is now been found with the strip-like guide elements that the unevenly supplied air leaves the guide elements as a very considerably more uniform, flat stream of air. It is thus hereby possible to choose fans which in view of the required supply and the occurring pressure differences have a maximum output. The fact that thereby the air does not leave the fans'uniformly as seen in the lengthwise direction of the device is of less importance in this embodiment. Because the optimal fans can be chosen an energy saving can in this manner likewise be achieved.
  • the air supply per unit of length of the air outflow opening becomes still more uniform.
  • the flat stream of air is then also virtually completely continuous in lengthwise direction.
  • the level of turbulence is hereby further reduced in a favourable manner.
  • an air curtain device having an elongate slot-like opening.
  • the device has only one air outflow channel having a portion with a constant section in the outflow direction.
  • the lengthwise dimension of this portion with constant section is substantially less than 5 times the transverse dimension thereof.
  • Fig. 1 shows a perspective view diagonally from below of an air curtain device according to the invention in a preferred embodiment.
  • Fig. 2 shows a partially sectional perspective view according to arrow II in fig. 1.
  • Fig. 3 shows a partially broken away perspective view, according to arrow III in fig. 2, of an alternative embodiment.
  • Fig. 4 shows schematically a number of possible embodiments of turbulence reducing elements for use with an air curtain device according to the invention.
  • the air curtain device 1 shown in fig. 1 is mounted in a manner to be further described above a passage opening in a building 2.
  • This passage opening can be the entrance or a connecting opening between two areas of the building.
  • the device 1 comprises a housing 3 which is provided with an elongate air outflow opening 6.
  • Air supply means which in the embodiment shown and described here are formed by fans accommodated in the housing 3 of the device 1, are connected to the air outflow opening 6.
  • the air is drawn in through inlet grids 5, which are formed in covers 4 closing off the housing 3.
  • elements 7 Arranged in the outflow opening 6 are elements 7 which reduce the turbulence of the blown out air.
  • the flat stream of air 8 leaving the opening 6 penetrates to the bottom of the passage opening and thus forms in a per se known manner a separation between the two climates on either side of the air curtain 8.
  • Fig. 2 shows in more detail the construction of the air curtain device 1.
  • the housing 3 of the device 1 is suspended from a horizontal ceiling surface by means of mounting strips 10, which are themselves screwed fixedly into the ceiling of the building 2 and are bent over at their ends into hooks 11 in the manner shown in the drawing.
  • two channels 12 are formed, on one upper edge of which an inwardly protruding edge 13 of plate material is formed.
  • the device can simply be suspended on the hooks 11 thereof by manipulating the device 1 such that the hooks 11 are placed into the channels 12 and come to fall behind the edges 13.
  • the final position can be fixed using locking screws 14.
  • This fitting with mounting strips 10 has the advantage that the mounting position of the device is to a large degree independent of the bearing construction in the ceiling.
  • the strips can be simply attached in the suitable positions in their lengthwise direction to the bearing parts.
  • Air filter elements 15 are arranged in the housing 3 of the device 1 behind the inlet grids 5. These filter elements 15 can be changed and are accessible through downward swivelling of the covers 4.
  • the air supply means are, as previously noted, formed by a number of fans 16.
  • a heat exchanger 23 Arranged in the housing 3 between the air filters 15 and the fans 16 is a heat exchanger 23. The indrawn air is heated or cooled in this heat exchanger in accordance with the desired use.
  • Each fan 16 comprises an electric motor 17, which drives a rotor 18.
  • the fan housing 19 formed as a so-called snail shell extends around the rotor.
  • the fan 16 is mounted with the housing 19 on a mounting plate 27 of the housing 3. Openings 20 corresponding with the fans are arranged in this plate.
  • the fans 16 applied here are radial fans with suction openings on either side of the fan housing 19. Fans of this type have a favourable output for the conditions intended here.
  • dividing plates 21 Connecting onto the outlet openings 20 of the fans are dividing plates 21 which extend up to the turbulence reducing elements at the location of the outflow opening 6.
  • these elements are formed by guide elements 22 which are formed by strip-like elements extending in the lengthwise direction of the air outflow opening 6 and parallel to each other.
  • the distance between the strip-like guide elements is smaller than or equal to one fifth of the height of these strip-like elements 22.
  • the guide elements provide in the first instance the effect intended by the invention of reducing the degree of turbulence in the outflowing air.
  • these moreover ensure a smoothing out of the flow irregularities in the air leaving the fans, in the lengthwise direction of the outflow opening 6. So that although the air from the discrete outlet openings 20 of the fans 19 is fed to the guide elements from varying directions, an adjustment occurs such that the flat stream of air leaving the guide elements 22 has a great extent of uniformity in lengthwise direction.
  • the embodiment in fig. 3 is distinguished in characteristic manner in that the guide elements 22 are assembled with a number of comb shaped supports 33 into a unit 30 which is mounted pivotally on an axis 31 in the housing 3.
  • the strip-like slats 22 are joined to the unit 30 by bolts extending through these and through each of the comb shaped supports 33.
  • the supports 33 are connected pivotally to the housing 3 using forks 32.
  • the unit 30 can be swivelled in the manner indicated out of the drawn position, in which the stream of air is directed slightly slanting outward, to the position indicated by the dashed line, in which the stream of air is directed vertically downward.
  • the guide elements 22 are adjusted such that optimal flow conditions are created. When for instance a relatively lower pressure can occur inside the building than outside the building, which will usually have the consequence that the air curtain bends inward, the stream of air can initially be directed slightly outward.
  • Fig. 3 shows further the way in which the cover 4 grips onto the housing 3.
  • the cover 4 is provided with a number of slot shaped openings 26 which drop over tongues 25 arranged on the housing 3.
  • Fig. 4 shows a selected number of possible different embodiments of the guide elements according to the invention. Characteristic for each of these embodiments is that outflow channels are defined which have in the general outflow direction, which is vertical in the examples shown, a lengthwise dimension which is a number of times greater than the smallest dimension transversely of this direction. As noted earlier this lengthwise dimension is at least five times as great as the transverse dimension.
  • the degree of turbulence of the outflowing air is reduced by these guide elements such that the interface with the outside air remains relatively “smooth", so that a minimum of mixing and diverting of the air of the air curtain to the outside takes place, while moreover the widening of the stream of air as the distance to the outflow opening increases is greatly limited, so that the flat stream of air extends further downward than when the degree of turbulence of the air is high.
  • the device according to the invention does not necessarily need to have integrated air supply means.
  • the invention can be applied just as well with an air curtain device wherein the air supply means are external.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Tents Or Canopies (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Air-Flow Control Members (AREA)
  • Ventilation (AREA)
  • Curtains And Furnishings For Windows Or Doors (AREA)

Claims (5)

  1. Luftvorhanggerät (1) mit einem Gehäuse (3), das dicht in einer Durchgangsöffnung eines Gebäudes einbaubar ist und mit einer Luftausströmöffnung (6) versehen ist, mit einer Luftzuführungseinrichtung (16), die an die Öffnung (6) angeschlossen ist, und mit Luftleitmitteln, die eine gerichtete Ausströmung aus der Luftöffnung bewirken, die von der Luftzuführungseinrichtung (16) gespeist wird, wobei die Luftführungsmittel Führungselemente (22) aufweisen, die in der allgemeinen Ausströmrichtung eine Längsdimension besitzen, die um ein Mehrfaches größer ist als die kleinste Dimension quer zu dieser Richtung,
    dadurch gekennzeichnet, daß
    - die Luftauslaßöffnung (6) eine schlitzartige, langgestreckte Öffnung ist, die sich unmittelbar über eine Längsseite des Gehäuses (3) erstreckt,
    - die Ausströmkanäle einen konstanten Querschnitt in Ausströmrichtung aufweisen, und
    - die Längsabmessung der Ausströmkanäle wenigstens fünfmal so groß ist wie die Querabmessung.
  2. Gerät nach Anspruch 1,
    dadurch gekennzeichnet, daß die Führungselemente streifenartige Elemente (22) sind, die sich in Längsrichtung der langgestreckten, schlitzartigen Luftausströmöffnung (6) und parallel zueinander erstrecken.
  3. Gerät nach Anspruch 2,
    dadurch gekennzeichnet, daß die Luftzuführungseinrichtung mehrere benachbart zueinander angeordnete Gebläse (16) aufweist, deren Austrittsöffnungen in gegenseitigen Abständen angeordnet sind.
  4. Gerät nach Anspruch 3,
    dadurch gekennzeichnet, daß zwischen den im Abstand zueinander liegenden Öffnungen und der Luftausströmöffnung (6) quer verlaufende Unterteilungsoberflächen (21) vorgesehen sind, um die Luft gleichförmig zu verteilen.
  5. Gerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Führungselemente zu einer getrennten Einheit (30) zusammengebaut sind, die um eine Achse verschwenkt werden kann, die in Längsrichtung der Ausströmöffnung (6) verläuft.
EP89202490A 1988-10-04 1989-10-02 Luftvorhanggerät Expired - Lifetime EP0362958B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89202490T ATE88805T1 (de) 1988-10-04 1989-10-02 Luftvorhanggeraet.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8802430A NL8802430A (nl) 1988-10-04 1988-10-04 Luchtgordijn-inrichting.
NL8802430 1988-10-04

Publications (2)

Publication Number Publication Date
EP0362958A1 EP0362958A1 (de) 1990-04-11
EP0362958B1 true EP0362958B1 (de) 1993-04-28

Family

ID=19852991

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89202490A Expired - Lifetime EP0362958B1 (de) 1988-10-04 1989-10-02 Luftvorhanggerät

Country Status (5)

Country Link
EP (1) EP0362958B1 (de)
AT (1) ATE88805T1 (de)
DE (1) DE68906230T2 (de)
ES (1) ES2040983T3 (de)
NL (1) NL8802430A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0554481A1 (de) * 1992-02-05 1993-08-11 GESELLSCHAFT FÜR LUFTSCHLEIERANLAGEN mbH Luftschleieranlage
US6431978B1 (en) 2000-04-05 2002-08-13 Christian Israel Slot outlet arrangement for air screen installations
WO2003022113A2 (de) 2001-08-30 2003-03-20 BSH Bosch und Siemens Hausgeräte GmbH Fruchtpresse
DE102014114491B3 (de) * 2014-10-07 2015-10-01 Arwus Gmbh Schlitzauslass für Luftschott-Anlagen mit Strömungsumlenkung
DE102016116832A1 (de) 2016-09-08 2018-03-08 Arwus Gmbh Schlitzauslass für Luftschott-Anlagen

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5590537A (en) * 1995-09-07 1997-01-07 The Perkin-Elmer Corporation Dry gas curtain for cryogenic surface
FR2740205B1 (fr) * 1995-10-23 1998-01-09 Unir Ultra Propre Nutrition In Dispositif de protection contre l'aerocontamination
FI112533B (fi) * 1999-05-21 2003-12-15 Jeven Oy Menetelmä ilmanvaihdon järjestämiseksi ja ilmanvaihtojärjestely
DE102004001765A1 (de) * 2004-01-12 2005-08-04 Jochen Schanze Luftschleieranlage
NL1031200C2 (nl) * 2006-02-21 2007-08-22 Biddle B V Uitblaasrooster en een luchtgordijn-inrichting.
DE102008050546B4 (de) 2008-10-06 2012-03-08 Airbus Operations Gmbh Side-Feeder-Luftführungselement für eine Flugzeugklimaanlage
PL387085A1 (pl) * 2009-01-21 2010-08-02 Flowair Głogowski I Brzeziński Spółka Jawna Kurtyna powietrzna ze strumieniem pomocniczym
US11015824B2 (en) 2016-09-02 2021-05-25 Inertechip Llc Air curtain containment system and assembly for data centers
NL2018444B1 (en) * 2017-03-01 2018-09-19 H Opdam Man B V An air curtain, and a vehicle comprising an air curtain

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2057494A (en) * 1936-05-18 1936-10-13 Hart & Cooley Mfg Company Adjustable directional grille
US3229609A (en) * 1964-01-15 1966-01-18 Nat Ind Equipment Co Multiple air screen for use with a doorway
US3291027A (en) * 1965-02-10 1966-12-13 Dual Jet Refrigeration Co Air outlet nozzles for an air curtain device
US3332334A (en) * 1965-08-09 1967-07-25 Melzer Herman Air curtain apparatus
US3327935A (en) * 1965-08-31 1967-06-27 Sigmund F Berlant Air curtain
US3362469A (en) * 1966-01-03 1968-01-09 Berner Ind Inc Air curtain
DE8716517U1 (de) * 1987-12-15 1988-02-11 Löbig, Rolf, 5653 Leichlingen Vorrichtung zum Erzeugen eines Luftschleiers od. dgl.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0554481A1 (de) * 1992-02-05 1993-08-11 GESELLSCHAFT FÜR LUFTSCHLEIERANLAGEN mbH Luftschleieranlage
US6431978B1 (en) 2000-04-05 2002-08-13 Christian Israel Slot outlet arrangement for air screen installations
WO2003022113A2 (de) 2001-08-30 2003-03-20 BSH Bosch und Siemens Hausgeräte GmbH Fruchtpresse
DE102014114491B3 (de) * 2014-10-07 2015-10-01 Arwus Gmbh Schlitzauslass für Luftschott-Anlagen mit Strömungsumlenkung
DE102016116832A1 (de) 2016-09-08 2018-03-08 Arwus Gmbh Schlitzauslass für Luftschott-Anlagen
EP3293463A1 (de) 2016-09-08 2018-03-14 arwus GmbH Schlitzauslass für luftschleiervorrichtungen

Also Published As

Publication number Publication date
DE68906230D1 (de) 1993-06-03
NL8802430A (nl) 1990-05-01
ATE88805T1 (de) 1993-05-15
ES2040983T3 (es) 1993-11-01
DE68906230T2 (de) 1993-08-12
EP0362958A1 (de) 1990-04-11

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