EP0657702A2 - Dispositif pour la génération de deux rideaux d'air à sens de circulation opposée - Google Patents

Dispositif pour la génération de deux rideaux d'air à sens de circulation opposée Download PDF

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Publication number
EP0657702A2
EP0657702A2 EP94119293A EP94119293A EP0657702A2 EP 0657702 A2 EP0657702 A2 EP 0657702A2 EP 94119293 A EP94119293 A EP 94119293A EP 94119293 A EP94119293 A EP 94119293A EP 0657702 A2 EP0657702 A2 EP 0657702A2
Authority
EP
European Patent Office
Prior art keywords
air
blower
arrangement according
door
air inlet
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
EP94119293A
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German (de)
English (en)
Other versions
EP0657702A3 (fr
EP0657702B1 (fr
Inventor
Alois Laternser
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.)
Ttl Tuer and Torluftschleier Lufttechnische Gerate GmbH
Original Assignee
Ttl Tuer and Torluftschleier Lufttechnische Gerate 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6504448&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0657702(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ttl Tuer and Torluftschleier Lufttechnische Gerate GmbH filed Critical Ttl Tuer and Torluftschleier Lufttechnische Gerate GmbH
Publication of EP0657702A2 publication Critical patent/EP0657702A2/fr
Publication of EP0657702A3 publication Critical patent/EP0657702A3/fr
Application granted granted Critical
Publication of EP0657702B1 publication Critical patent/EP0657702B1/fr
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
    • 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
    • F24F9/00—Use of air currents for screening, e.g. air curtains
    • F24F2009/007—Use of air currents for screening, e.g. air curtains using more than one jet or band in the air curtain

Definitions

  • Air curtains are used when outside doors or gates are to be prevented from entering the room or from escaping outside.
  • An arrangement to generate such a door air curtain is known from DE-PS 30 50 685.
  • a high-pressure fan In the housing there is a high-pressure fan, the suction side of which is connected to an air inlet and the pressure side of which is connected to an ejector nozzle.
  • the ejector nozzle serves to generate an induction air jet in order to be able to transport the air blown out of the air outlet with a further fan over the entire door height. This so-called primary air is expelled from the air outlet at a lower pressure and would not reach far enough to the ground without the induction air jet.
  • an air conditioning device is located in the flow path between the air inlet and the air outlet in order to adjust both the temperature and, if appropriate, the air humidity of the blown-out air can.
  • the known device is used in such a way that its air inlet faces the interior of the room, while the air outlet with the ejector nozzles is directed parallel to the door opening from top to bottom. This creates an air roller during operation, the air flow of which is directed in the vicinity of the floor from the door opening to the interior of the room, as is also the case in the article "Energy saving through the use of air curtain systems" in the magazine “Ki Air Conditioning Refrigeration Heating", 9/1983 is described.
  • the known device works satisfactorily as long as the pressure inside the room corresponds to the pressure of the atmosphere outside the room. However, as soon as additional ventilation devices are effective in the room or thermal lift is present, a negative pressure is created and the air curtain is no longer able to prevent outside air from penetrating through the air curtain. Rather, outside air flows in near the ground due to the air flow of the air roller of the gate air curtain, which causes a cold air lake next to the door.
  • this type of air flow creates an air roller that extends far into the space to be protected.
  • the outside air which is constantly sucked in directly, increases the energy expenditure for tempering the air curtain in comparison to the previously explained variant.
  • the energy requirement is about twice as large as in the first variant if the same interior temperature and a temperature difference between inside and outside of approx. 10 to 20 K is assumed.
  • Another embodiment known from practice provides for the use of two air curtains in order to improve the shielding effect, one on the inside of the door and the other on the outside of the door in such a way that both door air curtains produce air rollers with opposite directions of rotation , where the descending air flow occurs between the rollers.
  • This supply air flow would penetrate under the air roller of the inner door air curtain on the ground and in turn create a cold air lake in the vicinity of the door.
  • the energy requirement is roughly the same as for a simple air roller that is directed outwards on the ground.
  • two air rollers are produced which have an opposite direction of rotation.
  • the fan devices are arranged so that the rising air flow occurs between the rollers.
  • the door air curtain directly adjacent to the door works like a single gate air curtain according to the prior art, i.e. the high-velocity air flows downwards directly at the door opening and is redirected on the floor towards the interior of the room and shortly thereafter upwards.
  • This arrangement is extremely effective in itself when the pressure is equalized between the interior of the room and the outside atmosphere.
  • the inner air roller flows in the opposite direction, but because of the reversed air roller directly at the door, no air can escape from the inner air roller.
  • the open door and the air curtains ensure constant pressure equalization.
  • the cold air coming from the outside is transported from the outer air roller to the blower devices and is divided into a portion that is fed into the outer air roller and a further portion that reaches the inner air roller. Since this portion runs through the air conditioning device of the inner second blower device before penetrating into the interior of the room, the penetrating outside air is heated up to such an extent that no pulling action occurs.
  • the blower devices can either be spaced apart from one another, for example in a kind of wind trap, there being a considerable distance between the two door air curtain devices, or the blower devices can be accommodated in a common housing.
  • the two air inlets can also be combined to form a common air inlet.
  • first and second blower devices may be next to one another arranged.
  • FIG. 1 shows, in a highly schematic form, a room 1 of a building which is delimited by a floor 2, a ceiling 3 and a wall 4 surrounding it on all sides. At one point in the wall 4 there is an open door or gate opening 5 which extends from the floor 2 to a lintel 6 which is spaced from the ceiling 3. With reference to FIG. 1, the interior of the room is to the right of the wall 4, while the wall 4 on the left is “outside”.
  • a first and a second blower device 7, 8 are mounted side by side at the same height.
  • the first blower device 7 has an air outlet 9, which is directed next to the lintel 6 down towards the floor 2.
  • the first blower device 7 Located further to the interior of the room, the first blower device 7 has an air inlet 11 on its underside through which it sucks in air, which is then blown out via the aforementioned air outlet 9.
  • the second blower device 8 has the same structure, but is mounted in mirror image, i.e. its air outlet 12 is located further inside than its air inlet 13.
  • blower devices 7 and 8 are expediently designed such that their air inlets 11, 13 or air outlets 9, 12 extend over the entire width of the door 5. If this is not possible for design reasons, there is also the possibility of providing several first blower devices 7 and several second blower devices 8 alongside the lintel 6, so that the width of all air outlets 9, 12 and air inlets 11, 13 together approximately the width of the door 5 corresponds.
  • the air roller 15 consists of an air stream 16 blown out of the air outlet 9 onto the floor 2, which is deflected near the floor 2 at 17 in the direction of the interior of the room and then returns to the air inlet 11 as an ascending air stream 18, that is, the air roller 15 circulates, based on the illustration in FIG. 1, in a clockwise direction, while the air roller 14 runs counterclockwise due to the mirror-image arrangement of the blower device.
  • Your airflow 19 directed towards the floor 2 lies furthest towards the interior of the room or, in other words, the furthest away from the door 5 and is deflected at 21 towards the door 5, in order then to return as an upward-directed airflow 22 to the air inlet 13 .
  • the air roller 14 on the door 5 prevents an exchange of air between the outside and the inside.
  • the second blower device 8 contains an air conditioning device which is arranged in terms of flow between the air inlet 13 and the air outlet 12, the outside air 23 only arrives after it has been set to corresponding values in terms of temperature and humidity, as Air flow 24 the interior of the room.
  • the new arrangement ensures that no outside air reaches the inside of the room without conditioning.
  • the first blower device 7 does not necessarily need an air conditioning device, because it is intended to shield the inner air roller from the outside. Only at very low outside temperatures it may be advisable to heat the outer air roller a little in order to make passing the outer air roller more comfortable. In any case, however, the heating power for the outer air roller is lower than for the inner air roller, which reduces the heat losses to the outside. Furthermore, the amount of air per unit time of the outer air roller can be less than that of the inner air roller, which is adjacent to the room.
  • the two blower devices 7 and 8 are arranged directly next to each other. If necessary, they can also be accommodated in a common housing, the common air inlet then being located between the air outlets located at the ends of the housing.
  • the two blower devices 7 and 8 are designed so that the heating energy for the outer air roller as it comes from the first blower device 7 can be dimensioned less or is dimensioned less than the heating power for the inner air roller the second blower device.
  • the two blower devices 7 and 8 are essentially independent of one another in terms of air technology, at least with regard to the heating of the air rollers.
  • the room 1 contains, at a distance from its outer wall 4 with the door opening 5 towards the interior of the room, a further wall 25 with its own door opening 26 which is delimited at its upper edge by a lintel 27.
  • the first blower device 7 is fastened in an oriented manner above the lintel 6 towards the interior of the room.
  • the air outlet 9 is directly adjacent to the door opening 5.
  • the other blower device 8 is mounted at a distance from the first blower device 7 on the wall 25 above the door lintel 27, on the side facing the outer wall 4.
  • the second blower device 8 is fastened to the partition 25 in such a way that its air outlet 12 creates an air curtain, the door opening 26 is directed directly adjacent to the floor 2. This in turn creates two air rollers 14 and 15 with opposite directions of rotation, such that the air flows 18 and 22 of the two air rollers 14 and 15 directed upwards to the blower devices 7 and 8 lie between them.
  • FIG. 4 schematically shows the structure of the second blower device 8. It has a cuboid sheet metal housing 31 which is closed on all sides and has an upper side 32, a lower side 33 and a total of four side walls 34 which are parallel to one another in pairs.
  • the air inlet 13 in the form of a plurality of notched longitudinal slots 35, through which the air can penetrate into the interior of the housing 31.
  • an inner partition 36 which divides a chamber 37 within the housing 31.
  • the partition 36 connects to the bottom 33 next to the air inlet 13 and leads at a distance from the top 32 to the right side wall 34.
  • the air outlet 12 for example in the form of a grille, is also located in the bottom 33 and connects the partitioned Chamber 37 with the outside atmosphere. The arrangement is such that the air outlet 12 runs parallel to and adjacent to the right side wall 34.
  • the partition 36 consists of a rising part 38 beginning at the bottom 33, which ends at a distance from the top 32 and merges into a horizontal section 39 which leads to the right side wall 34, to which it is largely airtight. Otherwise, these two sections 38 and 39 extend Partition 36 perpendicular to the plane of the drawing between the side walls 34 parallel to the plane of the drawing.
  • An intake funnel 41 in which a blower 42 is arranged, is located in the partition wall section 38. At a distance from the blower 42, a schematically indicated air conditioning device 43 is provided in the chamber 37, which in the simplest case is a heat exchanger through which the air flows.
  • a further partition wall 44 is arranged in the chamber 37, which begins at the upper partition wall section 39, runs from there downwards towards the right side wall 34 and above the grille 45 in the air outlet 12 passes over a horizontal section 46 which is attached at its free end to the right side wall 34.
  • a further inner chamber 47 is divided in terms of flow in the chamber 37.
  • This further chamber 47 serves as an air duct for generating an induction air jet with the aid of a high-pressure blower 48 which is connected to an intake funnel 49 which is formed in the upper partition section 39 and opens into the inner chamber 47.
  • blower device The operation of the blower device is as follows: With the aid of the blower 42, air is sucked in via the air inlet 13 and conveyed into the chamber 37 under pressure. In the chamber 37 flows through the fan 42 conveyed air, the air conditioning device 43 and impinges on the partition 44, on which it is deflected downward, so that it can flow out through the grille 45 of the air outlet 12. Another air flow entering through the air inlet 13 flows past the blower 42 through the channel delimited between the upper side 32 and the upper partition section 39 to the intake funnel 49.
  • the high-pressure fan 48 which is connected to the intake funnel 49, also presses the intake air Relatively high pressure and thus a correspondingly high speed through the ejector 51 to the outside, which is arranged behind the grille 45 of the air outlet 12.
  • the high speed of the induction jet emerging from the ejector nozzle 51 also serves as a supporting jet for stabilizing the air curtain and thus for creating the air coming from the air conditioning device 43 at a low air speed against the effect of natural convection as far as the floor 2 of the room 1.
  • blower device only part of the intake air is thus conditioned, while the other part is blown out at high speed without conditioning.
  • a second air conditioning device in order to bring the air, which exits via the ejector nozzle 51, to corresponding values with regard to temperature and / or humidity.
  • the first blower device 7 can be constructed in exactly the same way as the second blower device 8, ie it can also contain an air conditioning device 43 or else the air conditioning device 43 can missing or set to other values to minimize heat losses to the outside.
  • FIGS. 1 to 3 The formation of the opposing air curtain shown in FIGS. 1 to 3 can not only be achieved with the gate air curtain device according to FIG. 4, in which an additional induction air jet is used. Alternatively, it is also possible to produce these air rollers 14 and 15 with air curtain devices which lack the high-pressure part and consequently the induction air jet. It is sufficient to use only the primary air which is generated with the aid of the blower 42 and exits from the air outlet 12.
EP94119293A 1993-12-08 1994-12-07 Dispositif pour la génération de deux rideaux d'air à sens de circulation opposée Expired - Lifetime EP0657702B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4341784 1993-12-08
DE4341784A DE4341784C2 (de) 1993-12-08 1993-12-08 Anordnung zur Erzeugung zweier gegenläufiger Luftschleier

Publications (3)

Publication Number Publication Date
EP0657702A2 true EP0657702A2 (fr) 1995-06-14
EP0657702A3 EP0657702A3 (fr) 1997-02-05
EP0657702B1 EP0657702B1 (fr) 2000-04-12

Family

ID=6504448

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94119293A Expired - Lifetime EP0657702B1 (fr) 1993-12-08 1994-12-07 Dispositif pour la génération de deux rideaux d'air à sens de circulation opposée

Country Status (4)

Country Link
EP (1) EP0657702B1 (fr)
AT (1) ATE191783T1 (fr)
DE (2) DE4341784C2 (fr)
DK (1) DK0657702T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10313108A1 (de) * 2003-03-24 2004-10-07 Lwt Luftwandtechnologie Gmbh Luftstromvorrichtung mit Umlenkung des Luftstroms

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19932708A1 (de) * 1999-07-16 2001-01-25 Lks Luft Und Klimaservice Chri Anordnung zur Erzeugung eines Luftschleiers an einer Tür zu einem Niedrigtemperaturraum
DE10029543B4 (de) * 2000-06-15 2006-02-09 Christiani Gmbh Luftschleiergerät
DE20200246U1 (de) 2002-01-09 2002-04-18 Lks Israel Gmbh Klimatechnisch Anordnung zur Erzeugung eines Luftschottes
DE10320490A1 (de) * 2003-03-25 2004-10-14 Kampmann Gmbh Vorrichtung zur Erzeugung eines Luftschleiers
DE102010007295A1 (de) 2010-02-08 2011-08-11 Novoferm tormatic GmbH, 44309 Antriebssteuerung und Verfahren zum Betrieb einer derartigen Antriebssteuerung
DE102010061007A1 (de) 2010-04-29 2011-11-03 Teddington Luftschleieranlagen Gmbh Anordnung zur Abschottung eines Vorraums oder Windfangs

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3023688A (en) * 1958-05-16 1962-03-06 Jr Fred A Kramer Air barrier
DE9010016U1 (fr) * 1990-07-02 1990-09-06 Teddington Controls Gmbh, 5202 Hennef, De
EP0511576A2 (fr) * 1991-04-30 1992-11-04 Mitsubishi Jukogyo Kabushiki Kaisha Dispositif d'aspiration de fluides et appareil pour le traitement de fluides

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3004073A1 (de) * 1980-02-05 1981-08-13 TTL Tür + Torschleier lufttechnische Geräte GmbH, 7065 Winterbach Raumlueftungseinrichtung
DE3050685C2 (de) * 1980-02-05 1985-10-17 TTL Tür + Torschleier lufttechnische Geräte GmbH, 7065 Winterbach Einrichtung zum Erzeugen eines Torluftschleiers

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3023688A (en) * 1958-05-16 1962-03-06 Jr Fred A Kramer Air barrier
DE9010016U1 (fr) * 1990-07-02 1990-09-06 Teddington Controls Gmbh, 5202 Hennef, De
EP0511576A2 (fr) * 1991-04-30 1992-11-04 Mitsubishi Jukogyo Kabushiki Kaisha Dispositif d'aspiration de fluides et appareil pour le traitement de fluides

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10313108A1 (de) * 2003-03-24 2004-10-07 Lwt Luftwandtechnologie Gmbh Luftstromvorrichtung mit Umlenkung des Luftstroms

Also Published As

Publication number Publication date
ATE191783T1 (de) 2000-04-15
DK0657702T3 (da) 2000-07-31
DE59409287D1 (de) 2000-05-18
DE4341784A1 (de) 1995-06-14
DE4341784C2 (de) 1995-09-07
EP0657702A3 (fr) 1997-02-05
EP0657702B1 (fr) 2000-04-12

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