EP0211150B1 - Outlet with vortex flow - Google Patents

Outlet with vortex flow Download PDF

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Publication number
EP0211150B1
EP0211150B1 EP86105431A EP86105431A EP0211150B1 EP 0211150 B1 EP0211150 B1 EP 0211150B1 EP 86105431 A EP86105431 A EP 86105431A EP 86105431 A EP86105431 A EP 86105431A EP 0211150 B1 EP0211150 B1 EP 0211150B1
Authority
EP
European Patent Office
Prior art keywords
swirl
lamellae
air inlet
disc
outlet
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
Application number
EP86105431A
Other languages
German (de)
French (fr)
Other versions
EP0211150A2 (en
EP0211150A3 (en
Inventor
Gottfried Müller
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.)
Schako KG
Original Assignee
Schako Metallwarenfabrik Ferdinand Schad KG
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 Schako Metallwarenfabrik Ferdinand Schad KG filed Critical Schako Metallwarenfabrik Ferdinand Schad KG
Priority to AT86105431T priority Critical patent/ATE44411T1/en
Publication of EP0211150A2 publication Critical patent/EP0211150A2/en
Publication of EP0211150A3 publication Critical patent/EP0211150A3/en
Application granted granted Critical
Publication of EP0211150B1 publication Critical patent/EP0211150B1/en
Expired 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

Definitions

  • the invention relates to a swirl outlet according to the preamble of patent claim 1.
  • a swirl disk covering the supply air connection is provided, into which a few lamellae are stamped and bent up from the plane of the swirl disk.
  • a further disk with corresponding openings is arranged on the swirl disk, which can be rotated in order to make the air passage cross section of the openings connected to the lamellae adjustable. If the outlet openings are opened by adjusting this second pane, the air jets emerge at an angle to the ceiling surface under the effect of the slanted slats and, due to the Coanda effect, lie against the ceiling. Due to the large angular spacing of the lamellae, the air jets emerging tangentially from the various outlet openings do not have any significant influence.
  • the outlet openings can be covered so far that the slats remain largely without a distracting effect on the emerging air jets and these are blown into the room essentially perpendicular to the ceiling plane. In this position, the outlet is suitable for supplying warm air.
  • the second adjustable disc required for adjustment between cold air and warm air operation makes the outlet complex.
  • the supply air supplied through the supply air nozzle meets the swirl disk vertically, which causes turbulence in the supply air flow during deflection by the fins, in particular on the outer circumference, which causes disturbing noises.
  • the invention has for its object to provide a swirl outlet, which is simple and therefore inexpensive and causes less flow noise.
  • the swirl outlet consists of a cylindrical inlet connection and a swirl disk which is placed on the outlet-side end of the inlet connection and closes it off. Lamellae are punched into the swirl disk, which are arranged radially in a circular ring and are bent out of the plane of the swirl disk.
  • the swirl outlet is extremely inexpensive to manufacture, since it only consists of the simply shaped air inlet and the swirl disk as a simple stamped sheet metal part. The entire swirl effect is generated by the swirl disc that closes the supply air connection.
  • the axial length of the supply air nozzle can therefore be adapted to the installation conditions, in particular a very short length of the supply air nozzle is sufficient for the function of the swirl outlet.
  • the lamellae which are arranged in large numbers and with a small mutual distance on the circular ring, produce a strong rotational movement of the emerging supply air, which is associated with a high induction of the room air.
  • This high induction causes the blown supply air to mix quickly with the room air.
  • Cold air can therefore also be blown in without it being necessary to hold it on the ceiling using the Coanda effect.
  • the swirl outlet must therefore not necessarily be installed flush with the ceiling, which significantly increases its possible uses.
  • the strong induction effect also makes it possible to supply air with a large temperature difference compared to the room air. Due to the large temperature difference, the air conditioning of the room can be achieved with lower supply air volumes. Energy can thus be saved in the air conditioning system and fans of smaller size and lower power can optionally be used.
  • the supply air nozzle uniformly applies supply air to the swirl disk over its entire surface.
  • An optimal air flow through the swirl disk can thus be achieved.
  • the diameter of the supply air nozzle is somewhat smaller than the diameter of the swirl disk and only widens in the direction of flow to the outer diameter of the circular ring of the lamellae immediately before the swirl disk. This expansion takes place with an essentially constant radius of curvature. Due to this expansion of the supply air connection, the incoming supply air is already directed radially outwards at the edge when it hits the swirl disk. As a result, good action is also exerted on the outer edge regions of the swirl disk without disturbing flow separation effects occurring in the edge regions, which deteriorate the air throughput and contribute to the generation of noise.
  • the swirl disk is preferably detachably attached to the outlet-side end of the supply air connection.
  • this is favorable for the production and on the other hand also offers advantages with the built-in swirl outlet.
  • the swirl disc can be easily removed for cleaning.
  • additional or different flow resistances can also be retrofitted to the built-in swirl outlet in the supply air connection, insofar as this is necessary without having to open the ceiling.
  • Supply air spigot and swirl plate can be made of metal or plastic.
  • the supply air spigot is a plastic part, while the swirl plate is made of metal, e.g. Steel, aluminum, brass or the like. Is punched.
  • the swirl outlet consists of a supply air connector 10 and a swirl disk 12.
  • the supply air connector 10 is designed as a cylindrical tube that widens at its outlet end with a constant radius of curvature 14 to form a radial, flat section 16 that is perpendicular to the axis of the supply air connector 10.
  • a cylindrical edge section 18 of small axial depth adjoins the flat section 16.
  • the entire supply air connector 10 is preferably made of plastic.
  • the swirl disk 12 is a circular sheet metal disk which is placed on the cylindrical edge section 18 of the supply air connector 10 inserted into the ceiling.
  • the swirl disk 12 extends radially beyond the cylindrical edge section 18 and is fastened outside the edge section 18, preferably snapped onto the outside of the edge section 18.
  • the swirl disk 12 thus completely covers the supply air connector 10, so that there is an elegant appearance from the room side.
  • the seal between the supply air connector 10 and the swirl disk 12 is effected by a sealing ring 20 made of rubber or foam, which is inserted inside the cylindrical edge section 18 between the flat section 16 of the supply air connector 10 and the swirl disk 12.
  • the fins 22 are punched out along a radial side edge and bent out of the plane of the swirl disk 12 along the other radial side edge in such a way that they protrude into the supply air connector 10 at an angle of approximately 45 ° to the air flow direction.
  • the lamellae 22 have essentially the same width over their entire radial extent, which corresponds approximately to their mean mutual angular distance.
  • the lamellae 22 extend with their radially outer ends up to the sealing ring 20, that is to say they engage radially beyond the diameter of the inlet air connector 10 in the flat section 16.
  • the diameter of the inlet air connector 10 is approximately three-quarters of the outer diameter of the circular ring of the lamellae 22.
  • the inner diameter of the The circular ring of the lamellae 22 is selected such that a space which additionally promotes induction with the ambient air remains free inside the air flow emerging from the swirl disc 12.
  • the outer diameter of the circular ring of the fins 22 is approximately 2.5 times the inner diameter of this circular ring.
  • the drawing shows an embodiment of the swirl outlet on a scale of 1: 1.

Abstract

1. A swirl imparting outlet having a cylindrical air inlet (10), comprising a swirl disc (12) closing the air inlet (10) at its outlet end, and having, arranged radially in an annular ring, lamellae (22) punched out in the swirl disc (12) which have a radial edge sloping at an angle to the plane of the swirl disc (12), characterized in that 16 to 40 lamellae (22) are porvided, whereby the angular distance between adjacent lamellae (22) in their radially middle region is of the same order of size as their width, and in that the air inlet (10) has a smaller diameter than the outer diameter of the annular ring of lamellae (22) and, in the direction of flow, widens out continuously immediately in front of the swirl disc (12) to have substantially the same diameter as the outer diameter of this annular ring.

Description

Die Erfindung betrifft einen Drallauslaß gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a swirl outlet according to the preamble of patent claim 1.

Bei einem aus der EP-A 0 129 000 bekannten Auslaß ist eine den Zuluftstutzen abdeckende Drallscheibe vorgesehen, in die einige wenige Lamellen eingestanzt und aus der Ebene der Drallscheibe hochgebogen sind. An der Drallscheibe ist eine weitere Scheibe mit entsprechenden Öffnungen angeordnet, die verdrehbar ist, um den Luftdurchtrittsquerschnitt der mit den Lamellen verbundenen Öffnungen verstellbar zu machen. Sind durch Verstellen dieser zweiten Scheibe die Austrittsöffnungen geöffnet, so treten die Luftstrahlen unter der Wirkung der schräg stehenden Lamellen unter einem Winkel zur Deckenfläche aus und legen sich infolge des Coanda-Effektes an der Decke an. Aufgrund des großen Winkelabstandes der Lamellen beeinflussen sich dabei die tangential aus den verschiedenen Austrittsöffnungen austretenden Luftstrahlen nicht wesentlich. Durch Verstellen der zweiten Scheibe können die Austrittsöffnungen so weit abgedeckt werden, daß die Lamellen weitgehend ohne ablenkende Wirkung auf die austretenden Luftstrahlen bleiben und diese im wesentlichen senkrecht zur Deckenebene in den Raum eingeblasen werden. In dieser Stellung eignet sich der Auslaß zum Zuführen von Warmluft.In the case of an outlet known from EP-A 0 129 000, a swirl disk covering the supply air connection is provided, into which a few lamellae are stamped and bent up from the plane of the swirl disk. A further disk with corresponding openings is arranged on the swirl disk, which can be rotated in order to make the air passage cross section of the openings connected to the lamellae adjustable. If the outlet openings are opened by adjusting this second pane, the air jets emerge at an angle to the ceiling surface under the effect of the slanted slats and, due to the Coanda effect, lie against the ceiling. Due to the large angular spacing of the lamellae, the air jets emerging tangentially from the various outlet openings do not have any significant influence. By adjusting the second disc, the outlet openings can be covered so far that the slats remain largely without a distracting effect on the emerging air jets and these are blown into the room essentially perpendicular to the ceiling plane. In this position, the outlet is suitable for supplying warm air.

Die zur Verstellung zwischen Kaltluft- und Warmluftbetrieb erforderliche zweite verstellbare Scheibe macht den Auslaß aufwendig. Die durch den Zuluftstutzen zugeführte Zuluft trifft senkrecht auf die Drallscheibe, wodurch bei der Ablenkung durch die Lamellen insbesondere am Außenumfang Turbulenzen der Zuluftströmung auftreten, die störende Geräusche verursachen.The second adjustable disc required for adjustment between cold air and warm air operation makes the outlet complex. The supply air supplied through the supply air nozzle meets the swirl disk vertically, which causes turbulence in the supply air flow during deflection by the fins, in particular on the outer circumference, which causes disturbing noises.

Der Erfindung liegt die Aufgabe zugrunde, einen Drallauslaß zu schaffen, der einfacher und damit preisgünstiger aufgebaut ist und geringere Strömungsgeräusche verursacht.The invention has for its object to provide a swirl outlet, which is simple and therefore inexpensive and causes less flow noise.

Diese Aufgabe wird bei einem Drallauslaß der eingangs genannten Gattung erfindungsgemäß gelöst durch die Merkmale des kennzeichnenden Teils des Anspruchs 1.This object is achieved according to the invention in a swirl outlet of the type mentioned at the outset by the features of the characterizing part of claim 1.

Vorteilhafte Ausführungsformen der Erfindung sind in den Unteransprüchen angegeben.Advantageous embodiments of the invention are specified in the subclaims.

Der erfindungsgemäße Drallauslaß besteht aus einem zylindrischen Zuiuftstutzen und einer Drallscheibe, die auf das austrittsseitige Ende des Zuluftstutzens aufgesetzt wird und diesen abschließt. In der Drallscheibe sind Lamellen eingestanzt, die radial in einem Kreisring angeordnet sind und aus der Ebene der Drallscheibe ausgebogen sind. Der Drallauslaß ist in der Herstellung äußerst preisgünstig, da er nur aus dem einfach geformten Zuluftstutzen und der Drallscheibe als einfachem gestanztem Blechteil besteht. Die gesamte Drallwirkung wird durch die den Zuluftstutzen abschließende Drallscheibe erzeugt. Der Zuluftstutzen kann daher in seiner axialen Längen beliebig den Einbauverhältnissen angepaßt werden, insb. ist auch eine sehr geringe Länge des Zuluftstutzen für die Funktion des Drallauslasses ausreichend.The swirl outlet according to the invention consists of a cylindrical inlet connection and a swirl disk which is placed on the outlet-side end of the inlet connection and closes it off. Lamellae are punched into the swirl disk, which are arranged radially in a circular ring and are bent out of the plane of the swirl disk. The swirl outlet is extremely inexpensive to manufacture, since it only consists of the simply shaped air inlet and the swirl disk as a simple stamped sheet metal part. The entire swirl effect is generated by the swirl disc that closes the supply air connection. The axial length of the supply air nozzle can therefore be adapted to the installation conditions, in particular a very short length of the supply air nozzle is sufficient for the function of the swirl outlet.

Die in einer großen Anzahl und mit geringem gegenseitigem Abstand auf dem Kreisring angeordneten Lamellen erzeugen eine starke Rotationsbewegung der austretenden Zuluft, die mit einer hohen Induktion der Raumluft verbunden ist. Diese hohe Induktion bewirkt eine schnelle Vermischung der eingeblasenen Zuluft mit der Raumluft. Es kann daher auch Kaltluft eingeblasen werden, ohne daß es erforderlich ist, diese mit Hilfe des Coanda-Effektes an der Raumdecke zu halten. Der Drallauslaß muß daher nicht notwendig bündig mit der Raumdecke eingebaut werden, was seine Einsatzmöglichkeiten wesentlich vergrößert.The lamellae, which are arranged in large numbers and with a small mutual distance on the circular ring, produce a strong rotational movement of the emerging supply air, which is associated with a high induction of the room air. This high induction causes the blown supply air to mix quickly with the room air. Cold air can therefore also be blown in without it being necessary to hold it on the ceiling using the Coanda effect. The swirl outlet must therefore not necessarily be installed flush with the ceiling, which significantly increases its possible uses.

Die starke Induktionswirkung ermöglicht es au- βerdem, Zuluft mit einer großen Temperaturdifferenz gegenüber der Raumluft zuzuführen. Aufgrund der großen Temperaturdifferenz kann die Klimatisierung des Raumes mit geringeren Zuluftvolumina bewirkt werden. Es kann somit Energie in der Klimaanlage eingespart werden und es können gegebenenfalls Ventilatoren geringerer Größe und geringerer Leistung eingesetzt werden.The strong induction effect also makes it possible to supply air with a large temperature difference compared to the room air. Due to the large temperature difference, the air conditioning of the room can be achieved with lower supply air volumes. Energy can thus be saved in the air conditioning system and fans of smaller size and lower power can optionally be used.

Der Zuluftstutzen beaufschlagt die Drallscheibe über ihre gesamte Fläche gleichmäßig mit Zuluft. Es kann somit ein optimaler Luftdurchsatz durch die Drallscheibe erreicht werden. Vorteilhafterweise ist der Durchmesser des Zuluftstutzens etwas kleiner als der Durchmesser der Drallscheibe und erweitert sich in Strömungsrichtung erst unmittelbar vor der Drallscheibe auf den Außendurchmesser des Kreisringes der Lamellen. Diese Erweiterung erfolgt mit einem im wesentlichen konstanten Krümmungsradius. Durch diese Erweiterung des Zuluftstutzens wird die zuströmende Zuluft am Rand bereits radial nach außen gelenkt, wenn sie auf die Drallscheibe auftrifft. Dadurch wird eine gute Beaufschlagung auch der äußeren Randbereiche der Drallscheibe bewirkt, ohne daß in den Randbereichen störende Strömungsabreißeffekte auftreten, die den Luftdurchsatz verschlechtern und zur Geräuscherzeugung beitragen.The supply air nozzle uniformly applies supply air to the swirl disk over its entire surface. An optimal air flow through the swirl disk can thus be achieved. Advantageously, the diameter of the supply air nozzle is somewhat smaller than the diameter of the swirl disk and only widens in the direction of flow to the outer diameter of the circular ring of the lamellae immediately before the swirl disk. This expansion takes place with an essentially constant radius of curvature. Due to this expansion of the supply air connection, the incoming supply air is already directed radially outwards at the edge when it hits the swirl disk. As a result, good action is also exerted on the outer edge regions of the swirl disk without disturbing flow separation effects occurring in the edge regions, which deteriorate the air throughput and contribute to the generation of noise.

Vorzugsweise ist die Drallscheibe lösbar am austrittsseitigen Ende des Zuluftstutzens angebracht. Dies ist einerseits für die Herstellung günstig und bietet andererseits auch bei dem eingebauten Drallauslaß Vorteile. Die Drallscheibe kann zur Reinigung bequem herausgenommen werden. Außerdem können auch bei dem eingebauten Drallauslaß nachträglich im Zuluftstutzen zusätzliche oder andere Strömungswiderstände eingebaut werden, soweit dies erforderlich ist, ohne daß die Raumdecke geöffnet werden muß.The swirl disk is preferably detachably attached to the outlet-side end of the supply air connection. On the one hand, this is favorable for the production and on the other hand also offers advantages with the built-in swirl outlet. The swirl disc can be easily removed for cleaning. In addition, additional or different flow resistances can also be retrofitted to the built-in swirl outlet in the supply air connection, insofar as this is necessary without having to open the ceiling.

Zuluftstutzen und Drallplatte können aus Metall oder Kunststoff bestehen. Vorzugsweise ist der Zuluftstutzen ein Kunststoffteil, während die Drallplatte aus Metall, z.B. Stahl, Aluminium, Messing oder dgl., gestanzt wird.Supply air spigot and swirl plate can be made of metal or plastic. Preferably the supply air spigot is a plastic part, while the swirl plate is made of metal, e.g. Steel, aluminum, brass or the like. Is punched.

Im folgenden wird die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispieles näher erläutert. Es zeigen :

  • Figur 1 eine Draufsicht auf den Drallauslaß und
  • Figur 2 einen Axialschnitt des Drallauslasses.
The invention is explained in more detail below on the basis of an exemplary embodiment shown in the drawing. Show it :
  • Figure 1 is a plan view of the swirl outlet and
  • Figure 2 shows an axial section of the swirl outlet.

Der erfindungsgemäße Drallauslaß besteht aus einem Zuluftstutzen 10 und einer Drallscheibe 12.The swirl outlet according to the invention consists of a supply air connector 10 and a swirl disk 12.

Wie Figur 2 zeigt, ist der Zuluftstutzen 10 als zylindrisches Rohr ausgebildet, das sich an seinem austrittsseitigen Ende mit konstantem Krümmungsradius 14 zu einem zur Achse des Zuluftstutzens 10 senkrechten, radialen ebenen Abschnitt 16 erweitert. An den ebenen Abschnitt 16 schließt sich ein zylindrischer Randabschnitt 18 geringer axialer Tiefe an. Der gesamte Zuluftstutzen 10 besteht vorzugsweise aus Kunststoff.As shown in FIG. 2, the supply air connector 10 is designed as a cylindrical tube that widens at its outlet end with a constant radius of curvature 14 to form a radial, flat section 16 that is perpendicular to the axis of the supply air connector 10. A cylindrical edge section 18 of small axial depth adjoins the flat section 16. The entire supply air connector 10 is preferably made of plastic.

Die Drallscheibe 12 ist eine kreisförmige Blechscheibe, die auf den zylindrischen Randabschnitt 18 des in die Raumdecke eingesetzten Zuluftstutzens 10 aufgesetzt wird. Die Drallscheibe 12 greift dabei radial über den zylindrischen Randabschnitt 18 hinaus und ist außerhalb des Randabschnitts 18 befestigt, vorzugsweise außen auf dem Randabschnitt 18 aufgeschnappt. Die Drallscheibe 12 deckt somit den Zuluftstutzen 10 vollständig ab, so daß sich von der Raumseite her ein formschönes Aussehen ergibt. Die Abdichtung zwischen dem Zuluftstutzen 10 und der Drallscheibe 12 wird durch ei nen Dichtungsring 20 aus Gummi oder Schaumstoff bewirkt, der innen an dem zylindrischen Randabschnitt 18 anliegend zwischen den ebenen Abschnitt 16 des Zuluftstutzens 10 und die Drallscheibe 12 eingesetzt ist.The swirl disk 12 is a circular sheet metal disk which is placed on the cylindrical edge section 18 of the supply air connector 10 inserted into the ceiling. The swirl disk 12 extends radially beyond the cylindrical edge section 18 and is fastened outside the edge section 18, preferably snapped onto the outside of the edge section 18. The swirl disk 12 thus completely covers the supply air connector 10, so that there is an elegant appearance from the room side. The seal between the supply air connector 10 and the swirl disk 12 is effected by a sealing ring 20 made of rubber or foam, which is inserted inside the cylindrical edge section 18 between the flat section 16 of the supply air connector 10 and the swirl disk 12.

In der Drallscheibe 12 sind zweiunddreißig Lamellen 22 ausgestanzt, die radial verlaufen und auf einem Kreisring angeordnet sind, wie Figurel zeigt. Die Lamellen 22 sind längs einer radialen Seitenkante ausgestanzt und längs der anderen radialen Seitenkante so aus der Ebene der Drallscheibe 12 herausgebogen, daß sie unter einem Winkel von etwa 45° gegen die Luftströmungsrichtung in den Zuluftstutzen 10 hineinragen. Die Lamellen 22 weisen über ihre gesamte radiale Ausdehnung im wesentlichen eine gleiche Breite auf, die etwa ihrem mittleren gegenseitigen Winkelabstand entspricht.Thirty-two lamellae 22 are punched out in the swirl disk 12, which run radially and are arranged on a circular ring, as shown in FIG. The fins 22 are punched out along a radial side edge and bent out of the plane of the swirl disk 12 along the other radial side edge in such a way that they protrude into the supply air connector 10 at an angle of approximately 45 ° to the air flow direction. The lamellae 22 have essentially the same width over their entire radial extent, which corresponds approximately to their mean mutual angular distance.

Die Lamellen 22 reichen mit ihren radial äußeren Enden bis an den Dichtungsring 20, greifen also radial über den Durchmesser des Zuluftstutzens 10 hinaus in den ebenen Abschnitt 16. Der Durchmesser des Zuluftstutzens 10 beträgt etwa dreiviertel des Außendurchmessers des Kreisringes der Lamellen 22. Der Innendurchmesser des Kreisringes der Lamellen 22 ist so gewählt, daß im Inneren des aus der Drallscheibe 12 austretenden Luftstromes ein die Induktion mit der Raumluft zusätzlich fördernder Raum freibleibt. Im dargestellten Ausführungsbeispiel beträgt der Außendurchmesser des Kreisringes der Lamellen 22 etwa das 2,5-fache des Innendurchmessers dieses Kreisringes.The lamellae 22 extend with their radially outer ends up to the sealing ring 20, that is to say they engage radially beyond the diameter of the inlet air connector 10 in the flat section 16. The diameter of the inlet air connector 10 is approximately three-quarters of the outer diameter of the circular ring of the lamellae 22. The inner diameter of the The circular ring of the lamellae 22 is selected such that a space which additionally promotes induction with the ambient air remains free inside the air flow emerging from the swirl disc 12. In the illustrated embodiment, the outer diameter of the circular ring of the fins 22 is approximately 2.5 times the inner diameter of this circular ring.

Die Zeichnung stellt ein Ausführungsbeispiel des Drallauslasses im Maßstab 1:1 dar.The drawing shows an embodiment of the swirl outlet on a scale of 1: 1.

Claims (10)

1. A swirl imparting outlet having a cylindrical air inlet (10), comprising a swirl disc (12) closing the air inlet (10) at its outlet end, and having, arranged radially in an annular ring, lamellae (22) punched out in the swirl disc (12) which have a radial edge sloping at an angle to the plane of the swirl disc (12), characterized in that 16 to 40 lamellae (22) are provided, whereby the angular distance between adjacent lamellae (22) in their radially middle region is of the same order of size as their width, and in that the air inlet (10) has a smaller diameter than the outer diameter of the annular ring of lamellae (22) and, in the direction of flow, widens out continuously immediately in front of the swirl disc (12) to have substantially the same diameter as the outer diameter of this annular ring.
2. A swirl imparting outlet according to Claim 1, characterized in that the outer diameter of the annular ring of lamellae (22) is two to four times greater than its inner diameter.
3. A swirl imparting outlet according to Claim 2, characterized in that the swirl disc (12) has an outer diameter of about 15 cm, and in that thirty-two lamellae (22) are arranged in an annular ring with an inner diameter of about 5 cm and an outer diameter of about 13 cm.
4. A swirl imparting outlet according to one of the preceding Claims, characterized in that the lamellae (22) are bent at an angle of 30° to 60° to the plane of the swirl disc (12).
5. A swirl imparting outlet according to Claim 4, characterized in that the lamellae (22) are bent at an angle of 45° to the plane of the swirl disc (12).
6. A swirl imparting outlet according to Claim 1, characterized in that the cylindrical wall of the air inlet (10) widens out with a constant radius of curvature (14) into a flat portion (16) parallel to the swirl disc (12).
7. A swirl imparting outlet according to Claim 1, characterized in that the diameter of the air inlet (10) is greater than half the outer diameter of the annular ring of lamellae (22).
8. A swirl imparting outlet according to Claim 7, characterized in that the diameter of the air inlet (10) is about three-quarters of the outer diameter of the annular ring of lamellae (22).
9. A swirl imparting outlet according to one of the preceding Claims, characterized in that the swirl disc (12) is releasably fastened to the air inlet (10).
10. A swirl imparting outlet according to Claim 9, characterized in that the swirl disc (12) is placed in a cylindrical peripheral portion (18) of the air inlet (10) and sealed against the air inlet (10) by a sealing ring (20) inserted in this cylindrical peripheral portion (18).
EP86105431A 1985-07-27 1986-04-19 Outlet with vortex flow Expired EP0211150B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86105431T ATE44411T1 (en) 1985-07-27 1986-04-19 SWIVEL OUTLET.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8521685U 1985-07-27
DE8521685U DE8521685U1 (en) 1985-07-27 1985-07-27 Swirl outlet

Publications (3)

Publication Number Publication Date
EP0211150A2 EP0211150A2 (en) 1987-02-25
EP0211150A3 EP0211150A3 (en) 1987-05-27
EP0211150B1 true EP0211150B1 (en) 1989-07-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP86105431A Expired EP0211150B1 (en) 1985-07-27 1986-04-19 Outlet with vortex flow

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EP (1) EP0211150B1 (en)
AT (1) ATE44411T1 (en)
DE (2) DE8521685U1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8816497U1 (en) * 1988-06-20 1989-08-31 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
DE3822283A1 (en) * 1988-07-01 1990-01-04 Schako Metallwarenfabrik SPIRAL OUTLET
DE8904583U1 (en) * 1989-04-12 1989-07-20 "Schako" Metallwarenfabrik Ferdinand Schad Kg Zweigniederlassung Kolbingen, 7201 Kolbingen, De
DE4024095A1 (en) * 1990-07-30 1992-02-06 Schako Metallwarenfabrik CEILING OUTLET
DE4108418A1 (en) * 1991-03-15 1992-09-17 Schako Metallwarenfabrik SPIRAL OUTLET
NL1030021C2 (en) * 2005-09-23 2007-03-26 Nijburg Invest B V Ventilation grid.
WO2020192077A1 (en) * 2019-03-26 2020-10-01 广东美的制冷设备有限公司 Vortex ring generator, air conditioning device, indoor unit and control method

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* Cited by examiner, † Cited by third party
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US2381345A (en) * 1942-06-05 1945-08-07 Alfred L Greenlaw Grill
US2505394A (en) * 1947-05-20 1950-04-25 William H Goettl Ventilating register
GB8316716D0 (en) * 1983-06-20 1983-07-20 Waterloo Grille Co Ltd Diffuser

Also Published As

Publication number Publication date
DE8521685U1 (en) 1985-10-03
EP0211150A2 (en) 1987-02-25
DE3664234D1 (en) 1989-08-10
ATE44411T1 (en) 1989-07-15
EP0211150A3 (en) 1987-05-27

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