EP2184558A1 - Air outlet for air conditioning and ventilation assemblies - Google Patents

Air outlet for air conditioning and ventilation assemblies Download PDF

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Publication number
EP2184558A1
EP2184558A1 EP09013679A EP09013679A EP2184558A1 EP 2184558 A1 EP2184558 A1 EP 2184558A1 EP 09013679 A EP09013679 A EP 09013679A EP 09013679 A EP09013679 A EP 09013679A EP 2184558 A1 EP2184558 A1 EP 2184558A1
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EP
European Patent Office
Prior art keywords
air outlet
air
size
ausströmquerschnittes
outlet opening
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
EP09013679A
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German (de)
French (fr)
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EP2184558B1 (en
Inventor
Ralf Joneleit
Thomas Sefker
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Gebrueder Trox GmbH
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Gebrueder Trox GmbH
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Priority to PL09013679T priority Critical patent/PL2184558T3/en
Publication of EP2184558A1 publication Critical patent/EP2184558A1/en
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Publication of EP2184558B1 publication Critical patent/EP2184558B1/en
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/745—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity the air flow rate increasing with an increase of air-current or wind pressure
    • 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
    • F24F13/062—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser having one or more bowls or cones diverging in the flow direction
    • 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
    • F24F2013/0612—Induction nozzles without swirl means
    • 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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F2013/1493—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre using an elastic membrane

Definitions

  • the invention relates to an air outlet for air conditioning and ventilation systems with at least one of a passage area surrounded air outlet opening, wherein the Ausströmquer bain at least one air outlet opening is variable in size.
  • Induction units are mainly operated with constant primary air volume flow. Due to the increasing demand for ventilation and the increased use in other areas of application, such as meeting rooms or laboratories, induction devices are increasingly being operated with variable primary air volume flows.
  • induction devices with air outlets, in particular with trained as induction nozzles air outlets, known in which the induction nozzles made of steel or plastic or are punched out.
  • Such induction nozzles have an unchangeable Ausströmquerites and a fixed geometry.
  • the primary air volume flow range is limited because a certain induction ratio is required for jet stability. In the lower area, the restriction results from a minimum pulse current, which requires sufficient induction and a suitable flow structure becomes.
  • the primary air volume flow is limited due to the high blow-off speed and the resulting sound power level.
  • a manual or motorized adjustment of the induction nozzle is possible in order to change the induction device to other volumetric flow ranges.
  • the object of the invention is to avoid the aforementioned disadvantages and to provide an air outlet in which the size of the Ausströmqueriteses is easier to change.
  • the size of the Ausströmqueriteses varies depending on the pressure difference between the room and - at Use of the air outlet according to the invention in an induction device - the primary air chamber.
  • the size of the Ausströmqueriteses at high differential pressures, ie high flow rates increased.
  • the differential pressure decreases, ie with decreasing volume flows an automatic reduction takes place.
  • the practically usable primary air volume range of an induction device can be significantly expanded, since the size of the Ausströmqueriteses adapts to the desired volume flow.
  • an element can be provided that reduces the theoretical free outflow cross section and can be displaced by the air flow against a restoring force such that the free outflow cross section of the air outlet opening is increased.
  • the element may have an increasing in the direction of air flow cross-sectional area and with increasing pressure difference, i. with increasing air flow, a smaller and falling pressure difference, i. decreasing air volume flow, each closing a larger proportion of the maximum possible Ausströmqueriteses.
  • the element can completely close the outflow cross section in the two extreme positions and release it almost completely at high air flow rates.
  • the element may be pointed or blunt.
  • the cross section of the element may be formed pointwise or mirror symmetrically.
  • the element may be wedge-shaped, conical or frustoconical.
  • the cross section of the element is at least approximately adapted to the design of the air outlet opening. It is advisable, for example, if, in the case of a round air outlet opening, the cross section of the element is likewise round, so that an annular gap is formed between the element and the edge of the air outlet opening.
  • the element can be displaced, for example, in its position in the direction of the flow direction.
  • the element At high pressure difference, i. high air flow rates, the element is displaced against a spring force, so that increases the free Ausströmquerites.
  • the element With decreasing air flow, d. H. at lower primary air chamber pressure in an induction device, the element is displaced by the force exerted by the spring restoring force in the direction of the outlet opening, and thus reduces the available Ausströmquerites the outlet opening.
  • At least the passage region of an air outlet opening for changing the size of the outflow cross-section at least partially made of an elastic material, such as a film, an elastic plastic or the like exist.
  • the elastic material bulges outwards.
  • the Ausströmquerites increased by the expansion of the elastic material.
  • induction devices usually several air outlet openings are provided. This is useful when, for example, a strip of elastic material is used, wherein the strip has a plurality of corresponding air outlet openings.
  • the strip is mounted circumferentially in the induction device. As the pressure in the primary air chamber increases, the strip bulges outwardly and the elastic material is stretched, whereupon the outflow area of each air outlet increases.
  • the outflow cross section increases substantially only in the transverse direction of the strip.
  • At least the passage region of an air outlet opening may have a nozzle-like collar, wherein at least the collar for changing the size of the Ausströmqueriteses partially made of an elastic material.
  • the relevant air outlet opening is designed as a nozzle, in particular as an induction nozzle.
  • the induction nozzle can be made entirely of an elastic material.
  • the nozzle has only one or two, for example, aligned parallel to the flow direction regions of an elastic material. Also by this configuration, an increasing pressure difference causes a widening of the nozzle and thus an enlargement of the Ausströmqueriteses.
  • Fig. 1 shows an air outlet with an air outlet opening 1, which is surrounded by a passage area 2.
  • This passage area 2 is made of an elastic material.
  • the passage region 2 is annular in the illustrated embodiment and is on the outside of a likewise annularly shaped fastening strip 3, which is connected to components not shown, comprises.
  • Fig. 2 is an embodiment, as used for example in induction devices used.
  • a strip 5 is shown, which includes a plurality of juxtaposed air outlet openings 1 and passage areas 2.
  • the strip 5 itself consists of an elastic material and is peripherally connected via fastening strips 3 with components not shown.
  • Fig. 2 shows only a portion of the strip 5 according to the invention, a fastening strip 3 is indicated only at the two opposite longitudinal edges. It requires no further explanation that even at the two free ends, ie at the short edges a suitable attachment, for example in the form of a fastening strip 3, is provided.
  • the elastic material is curved substantially in the transverse direction. While the air outlet 1 at low pressure differences in the illustrated embodiment a substantially circular Ausströmquerites, as shown in Fig. 2 is shown, the Ausströmquer bain the air outlet openings 1 due to the substantially only in the transverse direction curvature with increasing pressure difference more and more oval.
  • Fig. 4 an embodiment is shown, in which at the air outlet 1 a nozzle-like design collar 6 is provided, wherein the collar 6 in the illustrated embodiment consists of an elastic material.
  • the collar 6 and the air outlet 1 are shown at low pressure difference.
  • the collar 6 expands, assuming the contour shown in dashed lines.
  • the size of the Ausströmquerargueses the air outlet opening 1 increases.
  • FIG. 5 an air outlet opening 1 is shown, wherein the edge of the air outlet opening 1 in the direction of the air flow (arrow 4) is angled.
  • a cone-shaped element 7 which is connected via a connecting element 8 with a clasp-shaped spring element 9.
  • the element 7 is displaceable in and against the direction of the air volume flow (arrow 4).
  • the outflow cross section of the air outlet opening 1 is formed on the basis of the centrally arranged element 7 as a circumferential gap arranged between the element 7 and the passage region 2.
  • the element 7 If the pressure difference increases, the element 7 is displaced against the restoring force generated by the spring element 9 in the direction of the air flow (arrow 4). This decreases the size the Ausströmqueriteses the air outlet opening 1 to. With decreasing pressure difference, the element 7 is again displaced by the restoring force of the spring element 9 counter to the flow direction (arrow 4) and thus reduces the size of the Ausströmqueriteses.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Check Valves (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Duct Arrangements (AREA)

Abstract

The air outlet has transit area (2) and outlet opening (1), where the air outlet is formed in area of a resizable air outlet opening for use of air outlet even with variable air volume flows. The increasing pressure difference increases the size of the outflow cross section of the relevant air outlet against a restoring force and the decreasing pressure difference decreases again the size of the outflow cross section on the basis of the restoring force.

Description

Die Erfindung betrifft einen Luftauslass für klima- und lüftungstechnische Anlagen mit zumindest einer von einem Durchgangsbereich umgebenen Luftauslassöffnung, wobei der Ausströmquerschnitt zumindest einer Luftauslassöffnung in seiner Größe veränderbar ist.The invention relates to an air outlet for air conditioning and ventilation systems with at least one of a passage area surrounded air outlet opening, wherein the Ausströmquerschnitt at least one air outlet opening is variable in size.

Induktionsgeräte werden hauptsächlich mit konstantem Primärluftvolumenstrom betrieben. Durch den zunehmenden Anteil bedarfsgerechter Belüftung und dem verstärkten Einsatz in anderen Anwendungsbereichen, wie Meetingräumen oder Laboratorien, werden Induktionsgeräte immer häufiger mit variablen Primärluftvolumenströmen betrieben. Im Stand der Technik sind Induktionsgeräte mit Luftauslässen, insbesondere mit als Induktionsdüsen ausgebildeten Luftauslässen, bekannt, bei denen die Induktionsdüsen aus Stahl oder Kunststoff bestehen oder ausgestanzt sind. Derartige Induktionsdüsen besitzen einen unveränderbaren Ausströmquerschnitt und eine feste Geometrie. Dadurch ist der Primärluftvolumenstrombereich eingeschränkt, da ein bestimmtes Induktionsverhältnis für eine Strahlstabilität erforderlich ist. Im unteren Bereich ergibt sich die Einschränkung durch einen Mindestimpulsstrom, der für eine ausreichende Induktion und eine geeignete Strömungsstruktur benötigt wird. Im oberen Bereich ist der Primärluftvolumenstrom aufgrund der hohen Ausblasgeschwindigkeit und der daraus resultierenden Schallleistungspegel begrenzt. Bei einigen bekannten Induktionsgeräten ist eine händische oder motorische Verstellung der Induktionsdüse möglich, um das Induktionsgerät auf andere Volumenstrombereiche umzustellen.Induction units are mainly operated with constant primary air volume flow. Due to the increasing demand for ventilation and the increased use in other areas of application, such as meeting rooms or laboratories, induction devices are increasingly being operated with variable primary air volume flows. In the prior art induction devices with air outlets, in particular with trained as induction nozzles air outlets, known in which the induction nozzles made of steel or plastic or are punched out. Such induction nozzles have an unchangeable Ausströmquerschnitt and a fixed geometry. As a result, the primary air volume flow range is limited because a certain induction ratio is required for jet stability. In the lower area, the restriction results from a minimum pulse current, which requires sufficient induction and a suitable flow structure becomes. In the upper area, the primary air volume flow is limited due to the high blow-off speed and the resulting sound power level. In some known induction devices, a manual or motorized adjustment of the induction nozzle is possible in order to change the induction device to other volumetric flow ranges.

Aufgabe der Erfindung ist es, die vorgenannten Nachteile zu vermeiden und einen Luftauslass anzugeben, bei dem die Größe des Ausströmquerschnittes leichter veränderbar ist.The object of the invention is to avoid the aforementioned disadvantages and to provide an air outlet in which the size of the Ausströmquerschnittes is easier to change.

Diese Aufgabe wird dadurch gelöst, dass für den Einsatz des Luftauslasses auch bei variablen Luftvolumenströmen der Luftauslass im Bereich zumindest einer in seiner Größe veränderbaren Luftauslassöffnung so ausgebildet ist, dass bei steigender Druckdifferenz und dadurch steigendem durch die Luftauslassöffnung strömendem Luftvolumenstrom die Größe des Ausströmquerschnittes der betreffenden Luftauslassöffnung durch den Druck gegen eine Rückstellkraft zunimmt und bei sinkender Druckdifferenz und dadurch nachlassendem Luftvolumenstrom die Größe des Ausströmquerschnittes aufgrund der Rückstellkraft wieder abnimmt. Unter der Druckdifferenz wird die Differenz der Drücke in Strömungsrichtung gesehen vor und hinter der Luftauslassöffnung verstanden. Damit passt sich die Größe des Ausströmquerschnittes automatisch dem aktuellen Druck an, so dass der Luftauslass und damit beispielsweise das Induktionsgerät mit den entsprechenden Luftauslässen in größeren Volumenstrombereichen und dadurch variabler einsetzbar ist.This object is achieved in that for the use of the air outlet even with variable air flow rates of the air outlet in the range of at least one variable in size air outlet is designed so that with increasing pressure difference and thereby increasing flowing through the air outlet opening air volume flow, the size of Ausströmquerschnittes the air outlet increases by the pressure against a restoring force and the size of the Ausströmquerschnittes decreases again due to the restoring force with decreasing pressure difference and thereby decreasing air flow. The pressure difference is understood to mean the difference in the pressures in the flow direction before and behind the air outlet opening. Thus, the size of the Ausströmquerschnittes automatically adjusts to the current pressure, so that the air outlet and thus, for example, the induction device with the corresponding air outlets in larger volume flow ranges and thus variable is used.

Die Größe des Ausströmquerschnittes variiert in Abhängigkeit von der Druckdifferenz zwischen dem Raum und - bei Einsatz des erfindungsgemäßen Luftauslasses in einem Induktionsgerät - der Primärluftkammer. So wird die Größe des Ausströmquerschnittes bei hohen Differenzdrücken, d. h. hohen Volumenströmen, erhöht. Bei Abnahme des Differenzdruckes, d. h. bei fallenden Volumenströmen, findet eine selbsttätige Reduzierung statt. Mit dieser Maßnahme kann der praktisch nutzbare Primärluftvolumenbereich eines Induktionsgerätes deutlich erweitert werden, da sich die Größe des Ausströmquerschnittes an den gewünschten Volumenstrom anpasst.The size of the Ausströmquerschnittes varies depending on the pressure difference between the room and - at Use of the air outlet according to the invention in an induction device - the primary air chamber. Thus, the size of the Ausströmquerschnittes at high differential pressures, ie high flow rates, increased. When the differential pressure decreases, ie with decreasing volume flows, an automatic reduction takes place. With this measure, the practically usable primary air volume range of an induction device can be significantly expanded, since the size of the Ausströmquerschnittes adapts to the desired volume flow.

Bei einer Ausführungsform kann ein Element vorgesehen sein, dass den theoretischen freien Ausströmquerschnitt verringert und durch die Luftströmung derart gegen eine Rückstellkraft verlagert werden kann, dass der freie Ausströmquerschnitt der Luftauslassöffnung vergrößert wird.In one embodiment, an element can be provided that reduces the theoretical free outflow cross section and can be displaced by the air flow against a restoring force such that the free outflow cross section of the air outlet opening is increased.

Dabei kann das Element eine in Richtung der Luftströmung zunehmende Querschnittsfläche aufweisen und mit steigender Druckdifferenz, d.h. mit steigendem Luftvolumenstrom, einen jeweils kleineren und mit fallender Druckdifferenz, d.h. nachlassendem Luftvolumenstrom, einen jeweils größeren Anteil des maximal möglichen Ausströmquerschnittes verschließen. Das Element kann in den beiden Extremstellungen den Ausströmquerschnitt vollständig verschließen und bei hohen Luftvolumenströmen nahezu vollständig freigeben.In this case, the element may have an increasing in the direction of air flow cross-sectional area and with increasing pressure difference, i. with increasing air flow, a smaller and falling pressure difference, i. decreasing air volume flow, each closing a larger proportion of the maximum possible Ausströmquerschnittes. The element can completely close the outflow cross section in the two extreme positions and release it almost completely at high air flow rates.

Das Element kann spitz oder auch stumpf ausgebildet sein. Der Querschnitt des Elementes kann punkt- oder spiegelsymmetrisch ausgebildet sein. So kann das Element beispielsweise keil-, kegel- oder kegelstumpfartig ausgebildet sein.The element may be pointed or blunt. The cross section of the element may be formed pointwise or mirror symmetrically. For example, the element may be wedge-shaped, conical or frustoconical.

Vorzugsweise ist der Querschnitt des Elements zumindest in etwa der Ausgestaltung der Luftauslassöffnung angepasst. Es bietet sich beispielsweise an, wenn bei einer runden Luftauslassöffnung der Querschnitt des Elementes ebenfalls rund ist, so dass sich zwischen dem Element und dem Rand der Luftauslassöffnung ein ringförmiger Spalt bildet.Preferably, the cross section of the element is at least approximately adapted to the design of the air outlet opening. It is advisable, for example, if, in the case of a round air outlet opening, the cross section of the element is likewise round, so that an annular gap is formed between the element and the edge of the air outlet opening.

Das Element kann beispielsweise in seiner Position in Richtung der Durchströmrichtung verlagerbar sein. Bei hoher Druckdifferenz, d.h. hohen Luftvolumenströmen, wird das Element gegen eine Federkraft verlagert, so dass sich der freie Ausströmquerschnitt vergrößert. Bei nachlassendem Luftvolumenstrom, d. h. bei geringerem Primärluftkammerdruck bei einem Induktionsgerät, wird das Element durch die von der Feder ausgeübte Rückstellkraft wieder in Richtung der Auslassöffnung verlagert, und damit der zur Verfügung stehende Ausströmquerschnitt der Auslassöffnung verringert.The element can be displaced, for example, in its position in the direction of the flow direction. At high pressure difference, i. high air flow rates, the element is displaced against a spring force, so that increases the free Ausströmquerschnitt. With decreasing air flow, d. H. at lower primary air chamber pressure in an induction device, the element is displaced by the force exerted by the spring restoring force in the direction of the outlet opening, and thus reduces the available Ausströmquerschnitt the outlet opening.

Vorzugsweise kann zumindest der Durchgangsbereich einer Luftauslassöffnung zur Veränderung der Größe des Ausströmquerschnittes wenigstens bereichsweise aus einem elastischen Material, wie beispielsweise einer Folie, einem elastischen Kunststoff oder dergleichen, bestehen. Bei einer Ausführungsform ist der Durchgangsbereich, der die Luftauslassöffnung umgibt und damit bildet, zumindest bereichsweise, vorzugsweise vollständig, aus einem elastischen Material, wie beispielsweise Gummi, Folie oder elastischem Kunststoff. Bei hoher Druckdifferenz wölbt sich das elastische Material nach außen. Damit vergrößert sich der Ausströmquerschnitt durch die Ausdehnung des elastischen Materials.Preferably, at least the passage region of an air outlet opening for changing the size of the outflow cross-section at least partially made of an elastic material, such as a film, an elastic plastic or the like exist. In one embodiment, the passage area which surrounds the air outlet opening and thus forms, at least in regions, preferably completely, of an elastic material, such as rubber, foil or elastic plastic. At high pressure difference, the elastic material bulges outwards. Thus, the Ausströmquerschnitt increased by the expansion of the elastic material.

In Induktionsgeräten sind üblicherweise mehrere Luftauslassöffnungen vorgesehen. Hier bietet sich an, wenn beispielsweise ein Streifen aus dem elastischen Material eingesetzt wird, wobei der Streifen eine Vielzahl an entsprechenden Luftauslassöffnungen aufweist. Der Streifen ist umlaufend in dem Induktionsgerät befestigt. Bei steigendem Druck in der Primärluftkammer wölbt sich der Streifen nach außen und das elastische Material wird gedehnt, woraufhin sich der Ausströmquerschnitt einer jeden Luftauslassöffnung vergrößert. Bei einer solchen Ausgestaltung vergrößert sich der Ausströmquerschnitt im Wesentlichen nur in Querrichtung zum Streifen.In induction devices usually several air outlet openings are provided. This is useful when, for example, a strip of elastic material is used, wherein the strip has a plurality of corresponding air outlet openings. The strip is mounted circumferentially in the induction device. As the pressure in the primary air chamber increases, the strip bulges outwardly and the elastic material is stretched, whereupon the outflow area of each air outlet increases. In such an embodiment, the outflow cross section increases substantially only in the transverse direction of the strip.

Zumindest der Durchgangsbereich einer Luftauslassöffnung kann einen düsenartig ausgebildeten Kragen aufweisen, wobei zumindest der Kragen zur Veränderung der Größe des Ausströmquerschnittes bereichsweise aus einem elastischen Material besteht. Bei einer solchen Ausgestaltung ist die betreffende Luftauslassöffnung als Düse, insbesondere als Induktionsdüse, ausgebildet.At least the passage region of an air outlet opening may have a nozzle-like collar, wherein at least the collar for changing the size of the Ausströmquerschnittes partially made of an elastic material. In such an embodiment, the relevant air outlet opening is designed as a nozzle, in particular as an induction nozzle.

Die Induktionsdüse kann vollständig aus einem elastischen Material bestehen. Selbstverständlich ist es aber auch möglich, dass die Düse nur beispielsweise einen oder zwei parallel zur Durchströmrichtung ausgerichtete Bereiche aus einem elastischen Material aufweist. Auch durch diese Ausgestaltung bewirkt eine steigende Druckdifferenz eine Aufweitung der Düse und damit eine Vergrößerung des Ausströmquerschnittes.The induction nozzle can be made entirely of an elastic material. Of course, it is also possible that the nozzle has only one or two, for example, aligned parallel to the flow direction regions of an elastic material. Also by this configuration, an increasing pressure difference causes a widening of the nozzle and thus an enlargement of the Ausströmquerschnittes.

Im Folgenden werden in den Zeichnungen dargestellte Ausführungsbeispiele der Erfindung erläutert. Es zeigen:

Fig. 1
eine Draufsicht auf einen Luftauslass mit einer Luftauslassöffnung, wobei der Durchgangsbereich aus einem elastischen Material besteht,
Fig. 2
einen Streifen aus einem elastischen Material mit mehreren, nebeneinander angeordneten Luftauslassöffnungen,
Fig. 3a
einen Schnitt in Richtung A - A durch die Gegenstände nach den Fig. 1 und 2 bei niedriger Druckdifferenz,
Fig. 3b
einen Schnitt in Richtung A - A durch die Gegenstände nach den Fig. 1 und 2 bei hoher Druckdifferenz,
Fig. 4
eine Luftauslassöffnung mit einem düsenartig ausgebildeten Kragen, wobei der Kragen aus einem elastischen Material besteht und
Fig. 5
einen Luftauslass mit einem gegen eine Rückstellkraft verlagerbaren Element.
Embodiments of the invention illustrated in the drawings are explained below. Show it:
Fig. 1
a plan view of an air outlet with an air outlet opening, wherein the passage area consists of an elastic material,
Fig. 2
a strip of elastic material having a plurality of juxtaposed air outlet openings,
Fig. 3a
a section in the direction A - A through the objects after the Fig. 1 and 2 at low pressure difference,
Fig. 3b
a section in the direction A - A through the objects after the Fig. 1 and 2 at high pressure difference,
Fig. 4
an air outlet opening with a nozzle-like collar, wherein the collar consists of an elastic material and
Fig. 5
an air outlet with a displaceable against a restoring force element.

In den Figuren sind mehrere Ausführungsformen eines erfindungsgemäßen Luftauslasses dargestellt.In the figures, several embodiments of an air outlet according to the invention are shown.

Fig. 1 zeigt einen Luftauslass mit einer Luftauslassöffnung 1, die von einem Durchgangsbereich 2 umfasst ist. Dieser Durchgangsbereich 2 besteht aus einem elastischen Material. Der Durchgangsbereich 2 ist in dem dargestellten Ausführungsbeispiel ringförmig ausgebildet und wird außenseitig von einem ebenfalls ringförmig ausgebildeten Befestigungsstreifen 3, der mit nicht weiter dargestellten Bauteilen verbunden ist, umfasst. Fig. 1 shows an air outlet with an air outlet opening 1, which is surrounded by a passage area 2. This passage area 2 is made of an elastic material. The passage region 2 is annular in the illustrated embodiment and is on the outside of a likewise annularly shaped fastening strip 3, which is connected to components not shown, comprises.

Bei niedrigen Druckdifferenzen findet, wie in der Schnittdarstellung in Fig. 3a dargestellt, keine Auswölbung des elastischen Materials statt, da die Größe des Ausströmquerschnittes der Luftauslassöffnung 1 ausreichend ist. Steigt der in Richtung des Pfeils 4 strömende Luftvolumenstrom an, wölbt sich das elastische Material durch die steigende Druckdifferenz, wie in der Schnittdarstellung in Fig. 3b dargestellt, in Strömungsrichtung des Luftvolumenstroms (Pfeil 4). Damit nimmt die Größe des Ausströmquerschnittes der Luftauslassöffnung 1 zu.At low pressure differences, as in the sectional view in Fig. 3a illustrated, no bulging of the elastic material instead, since the size of the Ausströmquerschnittes the air outlet opening 1 is sufficient. If the air volume flow flowing in the direction of the arrow 4 increases, the elastic material bulges due to the increasing pressure difference, as in the sectional view in FIG Fig. 3b shown, in the flow direction of the air flow (arrow 4). Thus, the size of the Ausströmquerschnittes the air outlet opening 1 increases.

In Fig. 2 ist ein Ausführungsbeispiel, so wie es beispielsweise in Induktionsgeräten zum Einsatz kommt, dargestellt. Hier ist ein Streifen 5 dargestellt, der eine Vielzahl an nebeneinander angeordneten Luftauslassöffnungen 1 und Durchgangsbereichen 2 beinhaltet. Der Streifen 5 selbst besteht aus einem elastischen Material und ist randseitig über Befestigungsstreifen 3 mit nicht näher dargestellten Bauteilen verbunden. Da Fig. 2 nur einen Teil des erfindungsgemäßen Streifens 5 zeigt, ist lediglich an den beiden gegenüberliegenden Längsrändern je ein Befestigungsstreifen 3 angedeutet. Es bedarf keiner näheren Erläuterungen, dass auch an den beiden freien Enden, d.h. an den kurzen Kanten eine geeignete Befestigung, beispielsweise in Form eines Befestigungsstreifens 3, vorgesehen ist.In Fig. 2 is an embodiment, as used for example in induction devices used. Here is a strip 5 is shown, which includes a plurality of juxtaposed air outlet openings 1 and passage areas 2. The strip 5 itself consists of an elastic material and is peripherally connected via fastening strips 3 with components not shown. There Fig. 2 shows only a portion of the strip 5 according to the invention, a fastening strip 3 is indicated only at the two opposite longitudinal edges. It requires no further explanation that even at the two free ends, ie at the short edges a suitable attachment, for example in the form of a fastening strip 3, is provided.

Bei zunehmender Druckdifferenz, so wie es in Fig. 3b dargestellt ist, wird das elastische Material im Wesentlichen in Querrichtung gewölbt. Während die Luftauslassöffnungen 1 bei geringen Druckdifferenzen bei dem dargestellten Ausführungsbeispiel einen im Wesentlichen kreisrunden Ausströmquerschnitt, so wie es in Fig. 2 dargestellt ist, aufweisen, wird der Ausströmquerschnitt der Luftauslassöffnungen 1 aufgrund der im Wesentlichen nur in Querrichtung erfolgenden Wölbung bei zunehmender Druckdifferenz mehr und mehr ovaler.With increasing pressure difference, as it is in Fig. 3b is shown, the elastic material is curved substantially in the transverse direction. While the air outlet 1 at low pressure differences in the illustrated embodiment a substantially circular Ausströmquerschnitt, as shown in Fig. 2 is shown, the Ausströmquerschnitt the air outlet openings 1 due to the substantially only in the transverse direction curvature with increasing pressure difference more and more oval.

In Fig. 4 ist eine Ausführungsform dargestellt, bei der an der Luftauslassöffnung 1 ein düsenartig ausgebildeter Kragen 6 vorgesehen ist, wobei der Kragen 6 im dargestellten Ausführungsbeispiel aus einem elastischen Material besteht. Mit durchgezogenen Linien sind der Kragen 6 und die Luftauslassöffnung 1 bei geringer Druckdifferenz dargestellt. Bei zunehmender Druckdifferenz dehnt sich der Kragen 6 aus und nimmt dabei die in gestrichelten Linien dargestellte Kontur an. Dadurch vergrößert sich die Größe des Ausströmquerschnittes der Luftauslassöffnung 1.In Fig. 4 an embodiment is shown, in which at the air outlet 1 a nozzle-like design collar 6 is provided, wherein the collar 6 in the illustrated embodiment consists of an elastic material. With solid lines, the collar 6 and the air outlet 1 are shown at low pressure difference. With increasing pressure difference, the collar 6 expands, assuming the contour shown in dashed lines. As a result, the size of the Ausströmquerschnittes the air outlet opening 1 increases.

In Fig. 5 ist eine Luftauslassöffnung 1 dargestellt, wobei der Rand der Luftauslassöffnung 1 in Richtung des Luftstroms (Pfeil 4) abgewinkelt ist. Innerhalb der Luftauslassöffnung 1 befindet sich ein kegelförmig ausgebildetes Element 7, das über ein Verbindungselement 8 mit einem spangenförmig ausgebildeten Federelement 9 verbunden ist. Das Element 7 ist in und entgegen die Richtung des Luftvolumenstroms (Pfeil 4) verlagerbar. Der Ausströmquerschnitt der Luftauslassöffnung 1 ist aufgrund des mittig angeordneten Elementes 7 als umlaufender zwischen dem Element 7 und dem Durchgangsbereich 2 angeordneter Spalt ausgebildet.In Fig. 5 an air outlet opening 1 is shown, wherein the edge of the air outlet opening 1 in the direction of the air flow (arrow 4) is angled. Within the air outlet opening 1 is a cone-shaped element 7, which is connected via a connecting element 8 with a clasp-shaped spring element 9. The element 7 is displaceable in and against the direction of the air volume flow (arrow 4). The outflow cross section of the air outlet opening 1 is formed on the basis of the centrally arranged element 7 as a circumferential gap arranged between the element 7 and the passage region 2.

Nimmt die Druckdifferenz zu, wird das Element 7 gegen die von dem Federelement 9 erzeugte Rückstellkraft in Richtung des Luftstroms (Pfeil 4) verlagert. Damit nimmt die Größe des Ausströmquerschnittes der Luftsauslassöffnung 1 zu. Bei sinkender Druckdifferenz wird das Element 7 durch die Rückstellkraft des Federelementes 9 wieder entgegen die Strömungsrichtung (Pfeil 4) verlagert und damit die Größe des Ausströmquerschnittes verkleinert.If the pressure difference increases, the element 7 is displaced against the restoring force generated by the spring element 9 in the direction of the air flow (arrow 4). This decreases the size the Ausströmquerschnittes the air outlet opening 1 to. With decreasing pressure difference, the element 7 is again displaced by the restoring force of the spring element 9 counter to the flow direction (arrow 4) and thus reduces the size of the Ausströmquerschnittes.

Claims (5)

Luftauslass für klima- und lüftungstechnische Anlagen mit zumindest einer von einem Durchgangsbereich (2) umgebenen Luftauslassöffnung (1), wobei der Ausströmquerschnitt zumindest einer Luftauslassöffnung (1) in seiner Größe veränderbar ist, dadurch gekennzeichnet, dass für den Einsatz des Luftauslasses auch bei variablen Luftvolumenströmen der Luftauslass im Bereich zumindest einer in seiner Größe veränderbaren Luftauslassöffnung (1) so ausgebildet ist, dass bei steigender Druckdifferenz und dadurch steigendem, durch die Luftauslassöffnung (1) strömendem Luftvolumenstrom die Größe des Ausströmquerschnittes der betreffenden Luftauslassöffnung (1) durch den Luftvolumenstrom gegen eine Rückstellkraft zunimmt und bei sinkender Druckdifferenz und dadurch nachlassendem Luftvolumenstrom die Größe des Ausströmquerschnittes aufgrund der Rückstellkraft wieder abnimmt.Air outlet for air conditioning and ventilation systems with at least one of a passage area (2) surrounded air outlet (1), wherein the Ausströmquerschnitt at least one air outlet (1) is variable in size, characterized in that for the use of the air outlet even with variable air flow rates the air outlet in the region of at least one variable in size air outlet opening (1) is formed so that with increasing pressure difference and thereby increasing, through the air outlet (1) flowing air volume flow, the size of Ausströmquerschnittes the respective air outlet (1) by the air flow against a restoring force increases and decreases in decreasing pressure difference and thereby decreasing air flow, the size of the Ausströmquerschnittes due to the restoring force again. Luftauslass nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass ein Element (7) vorgesehen ist, dass den theoretischen freien Ausströmquerschnitt verringert und durch die Luftströmung derart gegen eine Rückstellkraft verlagert werden kann, dass der freie Ausströmquerschnitt der Luftauslassöffnung (1) vergrößert wird.Air outlet according to the preceding claim, characterized in that an element (7) is provided which reduces the theoretical free Ausströmquerschnitt and can be displaced by the air flow against a restoring force, that the free Ausströmquerschnitt the air outlet opening (1) is increased. Luftauslass nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass das Element (7) eine in Richtung der Luftströmung (Pfeil 4) zunehmende Querschnittsfläche aufweist und mit steigendem Luftvolumenstrom einen jeweils kleineren und mit nachlassendem Luftvolumenstrom einen jeweils größeren Anteil des maximal möglichen Ausströmquerschnittes verschließt.Air outlet according to the preceding claim, characterized, in that the element (7) in the direction Air flow (arrow 4) has increasing cross-sectional area and closes with increasing air volume flow each a smaller and with decreasing air flow a larger proportion of the maximum possible Ausströmquerschnittes. Luftauslass nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zumindest der Durchgangsbereich (2) einer Luftauslassöffnung (1) zur Veränderung der Größe des Ausströmquerschnittes wenigstens bereichsweise aus einem elastischen Material besteht.Air outlet according to one of the preceding claims, characterized in that at least the passage region (2) of an air outlet opening (1) for changing the size of the Ausströmquerschnittes at least partially consists of an elastic material. Luftauslass nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zumindest der Durchgangsbereich (2) einer Luftauslassöffnung (1) einen düsenartig ausgebildeten Kragen (6) aufweist, wobei zumindest der Kragen (6) zur Veränderung der Größe des Ausströmquerschnittes bereichsweise aus einem elastischen Material besteht.Air outlet according to one of the preceding claims, characterized in that at least the passage region (2) of an air outlet opening (1) has a nozzle-like collar (6), wherein at least the collar (6) for varying the size of Ausströmquerschnittes partially made of an elastic material ,
EP09013679.7A 2008-11-05 2009-10-30 Air outlet for air conditioning and ventilation assemblies Active EP2184558B1 (en)

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PL09013679T PL2184558T3 (en) 2008-11-05 2009-10-30 Air outlet for air conditioning and ventilation assemblies

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DE202008014690U DE202008014690U1 (en) 2008-11-05 2008-11-05 Air outlet for air conditioning and ventilation systems

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EP2184558A1 true EP2184558A1 (en) 2010-05-12
EP2184558B1 EP2184558B1 (en) 2014-04-23

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EP (1) EP2184558B1 (en)
DE (1) DE202008014690U1 (en)
DK (1) DK2184558T3 (en)
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US11632874B1 (en) * 2020-07-22 2023-04-18 ZT Group Int'l, Inc. Regulating airflow in a computer system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2105077A1 (en) * 1971-02-04 1972-08-10 Herbst D Device for the even distribution of air within rooms connected to the air distribution ducts of an air conditioning system
DE2804670B1 (en) * 1978-02-03 1979-06-13 Klaus Daniels Air outlet
DE2833822B1 (en) * 1978-08-02 1979-09-27 Werner Ing Reith Ceiling air outlet device for variable volume flow for room ventilation
DE8019939U1 (en) * 1979-09-13 1985-02-07 Luwa AG, Zürich AIR DISTRIBUTION DEVICE, IN PARTICULAR FOR SUPERVISED AIR
DE8433344U1 (en) * 1984-11-14 1985-05-09 Jacobs, Ludwig, 4790 Paderborn ONE-PIECE AIR NOZZLE, CONSTRUCTED FROM AN ELASTICALLY DEFORMABLE MATERIAL, FOR AIR CONDITIONING
WO1996039808A1 (en) * 1995-06-07 1996-12-19 Osborne Industries, Inc. Method and means for improved ceiling ventilation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2105077A1 (en) * 1971-02-04 1972-08-10 Herbst D Device for the even distribution of air within rooms connected to the air distribution ducts of an air conditioning system
DE2804670B1 (en) * 1978-02-03 1979-06-13 Klaus Daniels Air outlet
DE2833822B1 (en) * 1978-08-02 1979-09-27 Werner Ing Reith Ceiling air outlet device for variable volume flow for room ventilation
DE8019939U1 (en) * 1979-09-13 1985-02-07 Luwa AG, Zürich AIR DISTRIBUTION DEVICE, IN PARTICULAR FOR SUPERVISED AIR
DE8433344U1 (en) * 1984-11-14 1985-05-09 Jacobs, Ludwig, 4790 Paderborn ONE-PIECE AIR NOZZLE, CONSTRUCTED FROM AN ELASTICALLY DEFORMABLE MATERIAL, FOR AIR CONDITIONING
WO1996039808A1 (en) * 1995-06-07 1996-12-19 Osborne Industries, Inc. Method and means for improved ceiling ventilation

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DK2184558T3 (en) 2014-07-14
ES2465017T3 (en) 2014-06-04
DE202008014690U1 (en) 2010-03-25
EP2184558B1 (en) 2014-04-23
PL2184558T3 (en) 2014-09-30

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