EP3477212A1 - Air distribution device and method for ventilating room - Google Patents

Abstract

The invention relates to an air distribution device (1) comprising a housing (2) which delimits an air distribution space (7) for at least indirect connection to an air supply system, wherein the housing (2) has an air inlet cross section (5) through which supply air (6) in the air distribution chamber (7) can be introduced, wherein the housing (2) has an air outlet (8) with a horizontally disposed air outlet surface (9), said walls (13) of the air outlet (8) at an acute angle (±) between 5 ° and 22 ° to the air outlet surface (9) are arranged, and the air outlet surface (9) by a perforated ceiling panel (10) is formed, through which a first partial volume flow of the supply air (6) leaves the air outlet (8) and along a bottom (42 ) of the ceiling panel (10) flows into a space to be ventilated (12), heat exchanger elements (28) being arranged on a top side (24) of the ceiling panel (10) remote from the space to be ventilated (12). In order to provide a device by means of which the flow behavior in a space (12) is further optimized, so that the air conditioning of the entire space (12) can be improved, it is proposed according to the invention that on the housing (2) above the upper side (24) at least two nozzles (15) are arranged such that a longitudinal axis (20) of the nozzles (15), parallel to a longitudinal axis (22) of the ceiling panel (10) and parallel to a surface (25) of the ceiling panel ( 10), and the respective nozzles (15) are located on both sides of an axis (18) of the housing (2), which runs parallel to a transverse axis (19) of the ceiling panel (10). Furthermore, the present application relates to an associated method.

Description

introduction

The invention relates to an air distribution device comprising a housing which delimits an air distribution space for at least indirect connection to an air supply system, wherein the housing has an air inlet cross section through which supply air can be introduced into the air distribution space, wherein the housing has an air outlet with a horizontally arranged air outlet surface, wherein walls of the air outlet are arranged at an acute angle between 5 ° and 20 ° to the air outlet surface, and the air outlet surface is formed by a perforated ceiling panel through which a first partial volume flow of supply air leaves the air outlet and along a bottom of the ceiling panel in a to be ventilated Room flows, wherein on a side facing away from the ventilated space top of the ceiling panel heat exchanger elements are arranged.

Furthermore, the invention relates to a room of a building with an air distribution device arranged therein.

1. a) Durch einen Lufteintrittsquerschnitt eines Gehäuses wird Zuluft in einen von dem Gehäuse begrenzten Luftverteilraum eingeleitet.
2. b) Ein erster Teilvolumenstrom der Zuluft verlässt den Luftverteilraum über eine horizontal angeordnete von einem perforierten Deckenpaneel gebildete Luftaustrittsfläche eines Luftauslasses, und strömt entlang einer Unterseite des Deckenpaneels der Luftverteilvorrichtung in den zu belüftenden Raum, wobei das Gehäuse den Luftauslass mit der Luftaustrittsfläche aufweist, und Wandungen des Luftauslasses in einem spitzen Winkel zwischen 5° und 22° zu der Luftaustrittsfläche angeordnet sind.

Furthermore, the invention relates to a method for ventilating a room in a building by means of an air distribution device comprising the following method steps:

1. a) supply air is introduced through an air inlet cross-section of a housing in an air distribution space bounded by the housing.
2. b) A first partial volume flow of the supply air exits the air distribution space via a horizontally arranged by a perforated Deckenpaneel air outlet surface of an air outlet, and flows along an underside of the ceiling panel of the air distribution device in the space to be ventilated, wherein the housing has the air outlet with the air outlet surface, and walls the air outlet are arranged at an acute angle between 5 ° and 22 ° to the air outlet surface.

State of the art

The field of air conditioning knows a variety of air distribution devices that are designed to produce a turbulent mixed flow in rooms. The air exits turbulent and almost horizontally from the air distribution device, with a cooling or heating of the air via typically traversed by water as the heat transfer medium heat exchanger elements which are arranged on the Deckenpaneel takes place. The air distribution device influences the flow of the ceiling panel.

Suspended ceiling structures offer the possibility to arrange air distribution devices of the type described above in a space between the suspended ceiling and the actual ceiling, with the air outlet surface is either in the plane of the suspended ceiling, and the ceiling is thus the subject of Luftverteilvorrichtung, or arranged directly above is.

The construction of the in the DE 20 2006 007 846 U1 described air distribution device allows, for example, an approximately horizontal outflow of supply air. For this purpose, the air distribution device on an air inlet surface, an air outlet surface and four inclined walls. The walls are arranged at an acute angle a to the air outlet surface. Accordingly, the Luftverteilvorrichtung has a truncated pyramidal housing shape. The arrangement of the walls allows advantageous turbulent mixing ventilation, wherein at an angle α to at most 15 °, the air approximately parallel to the plane formed by the air outlet surface, that is, parallel to, for example, the ceiling plane, a radial orientation from the center of the air outlet surface outwardly. Other flow directions can not be achieved with this type of device.

Another Luftverteilvorrichtung, which operates on the principle of a turbulent mixed air system, is in the DE 10 2007 008 019 A1 described. Also in this air distribution device is provided that the supply air does not exit perpendicular to the ceiling, but perforations are traversed in a perforated plate at the lowest possible angle, so that there is a ceiling-parallel air flow, which induces the room air. This gives a high power density with good thermal comfort. The perforated perforated plate is formed by a ceiling panel of a grid ceiling or wall cladding.

To change the flow direction are in the DE 10 2013 111 244 A1 Guiding elements described in the air distribution device, which also allow a vertical outflow direction perpendicular to the ceiling panel in addition to the horizontal outflow along a ceiling panel. This is particularly useful for the heating case, to prevent warm air from accumulating under the ceiling panel or, conversely, to achieve a large penetration depth of the hot air in the room. To cool a room, however, the horizontal outflow below the Ceiling panel desired because thus a more even distribution of hot and cold air takes place in the room and drafts are avoided. An embodiment of this air distribution device provides heat exchanger elements on the ceiling panel on a side facing away from a space of the ceiling panel, so that the supply air can be cooled or heated.

The aforementioned air distribution devices have the disadvantage that no sufficient cooling of the supply air, especially on very warm days is achieved in order to create a pleasant indoor climate.

The DE 10 2010 001 319 A1 describes an air distribution device with a ceiling sail, wherein the air distribution device also leaves the supply air in a direction parallel to the ceiling and flows into the room. Outflow of the supply air above the ceiling sail is possible to cool or heat the supply air by meandering on the ceiling sail arranged tubes. A radial outflow is not desired, since thus an arrangement of the air passage would be necessary centrally in a room. Furthermore, a targeted outflow to a workplace is to be made possible by means of the air passage, which is why a radial outflow would be unfavorable. By means of this air distribution device, air conditioning of an entire room is only possible to a limited extent, since neither a large-area outflow of the supply air is desired nor possible.

task

It is therefore an object of the present invention to further develop the air distribution device of the type described above as well as the method for ventilating a room in such a way that the flow behavior in the room is further optimized, so that the air conditioning of the entire room can be improved.

solution

Based on the air distribution device of the type described above, the underlying object is achieved in that at least two nozzles are arranged on the housing above the top of the ceiling panel such that a longitudinal axis of the nozzle parallel to a longitudinal axis of the ceiling panel and parallel to a surface of the ceiling panel runs, and the respective nozzles on both sides of an axis of the housing, which is parallel to a transverse axis of the ceiling panel, are located.

According to the present application, instead of a nozzle, a nozzle row may also be meant, in which case the longitudinal axes of the respective nozzles of a nozzle row are preferably arranged parallel to each other. With the help of a row of nozzles, a large-area quasi-linear outflow above the ceiling panel along the heat exchanger elements can be achieved.

Further, the ceiling panel according to the present application may be a perforated plate on which the housing of the air distribution device is arranged. The ceiling panel should preferably have a substantially larger area than the air outlet surface of the air outlet, so that the second partial volume flow can be guided past a sufficiently large number of heat exchanger elements. The longitudinal axis of the ceiling panel according to the present invention is arranged parallel to a ceiling in the room. In addition, the ceiling panel according to the present invention has an upper side and a lower side. The upper side describes a side facing away from a room and thus a side of the ceiling panel facing a ceiling of the room. Consequently, a person in the room can not see the top of the ceiling panel in a mounted state. The underside of the ceiling panel is a side facing the room and thus visible side of the ceiling panel.

Due to the arrangement of the heat exchanger elements, the entire ceiling panel can preferably be used for cooling or heating purposes of the first and / or the second partial volume flow in the sense of the present application.

The advantage of the arrangement of the nozzles according to the invention is that the supply air is divided into two partial volume flows and at least one of the two partial volume flows can be cooled or heated by the heat exchanger elements. The first partial volume flow is led out of the air outlet surface of the Zuluftauslasses through the perforated ceiling panel, so that the supply air due to the Coanda effect flows approximately horizontally along the underside of the ceiling panel and is preferably heated or cooled by this. Advantageously, a radial outflow takes place - relative to a center of the air outlet surface - of the first partial volume flow. In contrast, the second partial volume flow through the nozzles, preferably the nozzle rows, the air distribution device is led out, whereby the induction effect of the air distribution device can be further increased. Since the nozzles above the ceiling panel, so viewed from the room, are not visible, leaves the second partial flow of the air distribution above the ceiling panel and thus flows along the heat exchanger elements that either cool or warm the supply air. By the directed air flow, the heat transfer from the heat exchanger elements and / or the ceiling panel on the preferably already preheated and conditioned supply air of the second partial volume flow can be improved. The heat transfer is thus significantly increased by the convective portion of the supply air compared with passive at its top, that is not actively flowed, heat exchanger elements. Due to the flow velocity, a large part of the supply air of the second partial volume flow flows up to edge regions of the ceiling panel. In particular, in a cooling case, so when the supply air is cooled by the heat exchanger elements, the supply air "drops" at the edge regions in the room. This has the advantage that any drafts occur only in the peripheral areas of the ceiling panel and thus of the room in which people are not or only for a very short moment. Proportionally, the cooled supply air of the second partial volume flow can already flow through the perforations of the ceiling panel into the room, provided that they are open. Typically, however, the ceiling panel in a region outside the air outlet surface of the air outlet is preferably covered with a fleece for optical and / or acoustic reasons, so that the second partial volume flow can not flow through the perforations and thus flows into the space only in the edge regions of the ceiling panel. Since an immediate mixing with the warmer air then takes place, drafts in this area are avoided. By means of the air distribution device according to the invention, consequently, a highly inductive mixing ventilation can be achieved.

An essential use of the air distribution device according to the invention provides for the cooling of a room in a building, as is necessary today for modern offices with good thermal insulation and very high internal heat load over long periods of time within a year. With the help of the air distribution cold air supply can be introduced as gently as possible in the room, while still taking place sufficient mixing with the air in the room. If necessary, the air distribution device can also be used to heat a room by heating the supply air from the heat exchanger elements.

Advantageously, however, adjusting elements can be arranged in the air outlet for the heating case, which allow a vertical outflow of the first partial volume flow from the air outlet surface. Consequently, the warm supply air can flow as deeply as possible into the room, wherein the supply air is preferably introduced already heated in the air distribution space in this case.

Advantageously, an embodiment of the invention provides that on the housing above the top of the ceiling panel at least one further nozzle is arranged such that a longitudinal axis of the nozzle perpendicular to the longitudinal axis of the ceiling panel and runs parallel to the surface of the ceiling panel. Because of this arrangement, an approximately radial outflow of the second partial volume flow can also be achieved by means of the nozzles, so that a larger-area mixing ventilation in the room can be achieved.

An energetically economic development of the invention provides that at least one further nozzle is arranged on the housing above the upper side of the ceiling panel such that a longitudinal axis of the nozzle runs perpendicular to the longitudinal axis of the ceiling panel and perpendicular to the surface of the ceiling panel, wherein an outflow of the Supply air from the nozzle is directed away from the ceiling panel. This arrangement of the nozzle or a corresponding row of nozzles causes the second partial volume flow is directed to a ceiling of the room and then guided along the ceiling of the room. This arrangement is particularly advantageous at night, since the ceiling can be cooled by means of the night air and used as a "refrigerant storage" due to their large cooling capacity. The cooled ceiling can then be used during the day for pre-cooling or cooling of the supply air. If then with the help of the ceiling no sufficient cooling of the supply air instead, the cooling heat exchanger elements can be used. This can consequently lead to an energy saving, since only an hourly use of the heat exchanger elements is possible.

Advantageously, the invention provides that the acute angle between 7 ° and 15 °, since this causes the supply air approximately parallel to the plane formed by the ceiling panel and in a preferably radial outlet direction from a center of the air outlet to the outside emerges. Thus, a sufficient mixing ventilation can be achieved.

A constructive further development provides that the at least two nozzles are arranged on the air outlet, in particular on a transition piece of the air outlet having a cuboid shape. In this development, the housing is thus formed by the air outlet. The cuboid shape not only allows a simple attachment of the nozzles, but has arranged perpendicular to the ceiling panels walls that allow an inventive arrangement of the nozzles and thus the outflow of the supply air, because a longitudinal axis of the nozzles should be arranged at least parallel to the ceiling panel.

An alternative embodiment of the invention provides that the housing has an air distribution box, wherein the at least two nozzles are arranged on the air distribution box. The housing of the air distribution device according to the invention is formed in this embodiment of the air distribution box and the air outlet, wherein the Air distribution box is preferably integrally connected to the air outlet. The air distribution space is delimited by the air distribution box, wherein preferably a first area of the air distribution space outside the air outlet and a second area are arranged within the air outlet. The air inlet surface is now arranged on the air distribution box. The air outlet is therefore only indirectly connected to the air supply system, which is why, for example, an inflow funnel of the air outlet can be arranged at the transition piece, which allows a better inflow of the supply air from the first region of the air distribution space in the second region of the air distribution space.

According to the invention, it is provided that a flow path leading to a nozzle can be completely or partially blocked by means of at least one adjustable shut-off element. This has the advantage that the second partial volume flow of the supply air can be regulated. This means that the volume of supply air leaving the air distribution space above the ceiling panel, can be changed by means of the obturator. Each individual nozzle may have its own obturator. However, it is also conceivable that a shut-off device is associated with a whole row of nozzles, and thus takes place covering the entire row of nozzles. Depending on the desired cooling capacity, more or less supply air is emitted above the ceiling panel. The obturator can for this purpose preferably occupy different positions between an open position in which a maximum volume flow leaves the air distribution space, and a closed position in which no supply air passes through the corresponding nozzle again.

Alternatively, it is also conceivable that the obturator regulates the outflow direction of the supply air from the air distribution space above the ceiling panel due to its adjustment. If, for example, in addition to the nozzles, which allow outflow of supply air parallel to the ceiling panel, additionally provided nozzles which allow outflow of the supply air in the direction of the ceiling of the room, it is advantageous if the respective shut-off devices are arranged such that they either the nozzles or rows of nozzles with the outflow direction of the incoming air parallel to the ceiling panel or the nozzles with the outflow direction towards the ceiling of the room. At night, the large cooling capacity of the ceiling can be used by blowing with cool nocturnal outdoor air for "cold storage", while can be dispensed with outflow of supply air along the heat exchanger elements at night. Consequently, closing the nozzles, which allow an outflow direction of the supply air parallel to the ceiling panel, would be advantageous with the respective shut-off elements. During the day, the air can be cooled or cooled by flowing along the ceiling, which is why Now let the nozzles first flow out the supply air in the direction of the ceiling, before they are closed later, so that the supply air then flows again parallel to the ceiling panel along the heat exchanger elements to be actively cooled.

Advantageously, the obturator is designed in the form of a pivotable flap. As a result, the air distribution device according to the invention can be adapted to a wide variety of applications, such as those described above, for example.

It is particularly advantageous for the desired outflow characteristic of the air distribution device if the ceiling panel has perforations or holes which preferably define a free cross section of about 13% to 22%, more preferably 16%, of the perforated or perforated total area. The choice of the free cross-section is particularly relevant in the area of the air outlet surface, since a supply air flowing quasi-parallel to the ceiling panel below the ceiling panel, ie an approximately horizontal outflow, is desired.

A constructional development of the invention provides that the ceiling panel is rectangular and / or the air outlet is truncated pyramidal. An elongated ceiling panel has the advantage that the supply air in the desired outflow direction of the supply air, ie parallel to the ceiling panel and parallel to the longitudinal axis of the ceiling panel, can flow along as many heat exchanger elements, so as to increase the transmittable power. In particular, in the truncated pyramidal air outlets, it is possible to arrange a plurality of air distribution devices in a row on the ceiling panel, preferably perpendicular to the longitudinal axis of the ceiling panel. This allows - in the manner of a modular system - a space-appropriate adaptation of the air distribution device or air distribution devices on a ceiling panel or more ceiling panels in any room.

It has been found that according to the present invention, depending on a width of the ceiling panel, a plurality of air distribution device can be arranged side by side to obtain the previously described positive flow conditions over the entire width of the ceiling panel. Consequently, multiple air distribution devices may be associated with a single ceiling sail.

Alternatively, a constructive development of the air distribution device provides that the ceiling panel is rectangular and the air outlet is elongated in plan. A longitudinal axis of the elongated Luftverteilvorrichtung is arranged perpendicular to the longitudinal axis of the ceiling panel. Due to the elongated shape of the air distribution device, it is sufficient if only one Luftverteilvorrichtung on the Ceiling panel is arranged to reach a sufficiently large with air overflowed top of the ceiling panel. Furthermore, the elongate shape has the advantage that it does not lead to a mutual obstruction of Zuluftvolumenströme, as this may be the case with adjacent air distribution devices.

In order to prevent the mutual obstruction of the first partial volume flows of the supply air of adjacent air distribution spaces, it may be advantageous if at least one cover element is arranged in the interior of the air distribution space, which can change a Ausströmcharakteristik for a portion of the air outlet surface of the air outlet. Preferably, the at least one cover element is fastened to the ceiling panel in the region of the air outlet surface, preferably glued thereto.

So that it does not come to a mutual obstruction of the second partial volume flows of the respective air distribution spaces, shut-off elements for closing the corresponding nozzles may be arranged on the aligned nozzles or it may be completely dispensed with nozzles arranged in such a way.

Advantageously, the heat exchanger elements are tubes or channels which are arranged meander-shaped on the ceiling panel. The tubes are preferably each connected to a water supply system, so that a continuous flow through the tubes by means of a fluid, preferably water, is made possible. The supply of the fluid into the tubes can be advantageously controlled as needed. Advantageously, the tubes are arranged on both sides of the longitudinal axis of the ceiling panel, more preferably on both sides of a transverse axis of the ceiling panel, meandering on this.

Furthermore, according to the invention, a space of a building with at least one air distribution device according to one of claims 1 to 12 is provided, wherein the ceiling panel is designed in the form of a ceiling sail and is freely visible in the room. A complete occupancy of the ceiling of a room with a ceiling panel or several ceiling panels is not necessary.

• c) In einer Gebrauchsstellung der Luftverteilvorrichtung strömt ein zweiter Teilvolumenstrom der Zuluft über zumindest zwei an dem Gehäuse angeordnete Düsen aus dem Luftverteilraum, wobei der zweite Teilvolumenstrom oberhalb einer mit Wärmetauscherelementen versehenen Oberseite des Deckenpaneels, parallel zu einer Längsachse des Deckenpaneels und beidseitig einer Achse des Gehäuses, die parallel zu einer Querachse des Deckenpaneels angeordnet ist, und somit entlang der Wärmetauscherelemente ausströmt.

Furthermore, the underlying object is achieved according to the invention starting from the method of the type described above by the following method step:

• c) In a position of use of the air distribution device, a second partial volume flow of the supply air flows via at least two nozzles arranged on the housing from the air distribution space, wherein the second partial volume flow above a provided with heat exchanger elements Top of the ceiling panel, parallel to a longitudinal axis of the ceiling panel and on both sides of an axis of the housing, which is arranged parallel to a transverse axis of the ceiling panel, and thus flows along the heat exchanger elements.

The method according to the invention is particularly suitable for introducing cooled supply air into a room, because the second partial volume flow of the supply air flowing through the nozzles is conducted along the cooling heat exchanger elements and thus cooled. Part of the cooled supply air can penetrate through the perforated ceiling panel into the room, and another part of the cooled supply air "falls" in an edge region of the ceiling panel in the room and mixes there with the room air. Typically, however, the entire partial volume flow flows to an edge region of the ceiling panel and does not penetrate through the perforations in the space of the ceiling panel, because preferably in the area outside the air outlet surface of the air outlet a fleece on the ceiling panel is arranged for acoustic and / or optical reasons.

If necessary, the supply air can also be heated by means of the heat exchanger elements before it flows into the room.

A further development of the method provides that, in a second position of use of the air distribution device, the second partial volume flow is led out by means of further nozzles located on the housing from the air distribution space in a direction approximately perpendicular to the Deckenpaneel and parallel to a central axis of the housing, so that the second Partial volume flow flows along a ceiling of the room.

This development according to the invention offers the significant advantage that the cooling effect of a ceiling of the room for cooling the supply air can be used after the ceiling was previously cooled during the night with cool night air.

Shut-off devices within the housing have proven to be particularly advantageous, which close the nozzles such that either an outflow of the supply air takes place along the heat exchanger elements or along the ceiling. In particular, at night, the nozzles that allow outflow of the supply air along the heat exchanger elements can be closed, so that the cool night air flows along the ceiling and cools them. During the day, the cooled ceiling can be used to cool the room air. Should not have sufficient cooling Supply air by means of the ceiling be more possible, the supply air can either flow from the ceiling along a part of the heat exchanger elements now in use along or the at least one obturator closes the nozzles that direct the supply air to the ceiling, thus opening the nozzles that direct the supply air directly to the cooling heat exchanger elements along.

Finally, it should be noted that the various features of the subclaims can be implemented individually for themselves or for a plurality of combinations in variants of the invention.

embodiments

Fig. 1:

eine Seitenansicht einer erfindungsgemäßen Luftverteilvorrichtung in einer ersten Ausführungsform,

Fig. 2:

eine Draufsicht der erfindungsgemäßen Luftverteilvorrichtung gemäß Figur 1,

Fig. 3:

eine Draufsicht einer erfindungsgemäßen Luftverteilvorrichtung gemäß einer zweiten Ausführungsform,

Fig. 4:

eine Draufsicht eines Raumes in einem Gebäude, in dem drei der erfindungsgemäßen Luftverteilvorrichtungen gemäß Figur 3 angeordnet sind,

Fig. 5:

eine Seitenansicht einer erfindungsgemäßen Luftverteilvorrichtung in einer dritten Ausführungsform,

Fig. 6:

eine Draufsicht eines Deckenpaneel mit darauf angeordneten Luftverteilvorrichtungen in einer vierten Ausführungsform,

Fig. 7:

eine Draufsicht des Deckenpaneels gemäß Figur 6, wobei die Luftverteilvorrichtungen entfernt wurden, und

Fig. 8:

eine Seitenansicht einer erfindungsgemäßen Luftverteilvorrichtung in einer fünften Ausführungsform.

The invention described above will be explained in more detail with reference to several embodiments, which are illustrated in the figures. It shows:

Fig. 1:

a side view of an air distribution device according to the invention in a first embodiment,

Fig. 2:

a plan view of the air distribution device according to the invention according to FIG. 1 .

3:

a top view of an air distribution device according to the invention according to a second embodiment,

4:

a plan view of a room in a building in which three of the air distribution devices according to the invention according to FIG. 3 are arranged

Fig. 5:

a side view of an air distribution device according to the invention in a third embodiment,

Fig. 6:

a top view of a ceiling panel with air distribution devices arranged thereon in a fourth embodiment,

Fig. 7:

a plan view of the ceiling panel according to FIG. 6 , wherein the air distribution devices have been removed, and

Fig. 8:

a side view of an air distribution device according to the invention in a fifth embodiment.

In the embodiments shown below structurally identical components and components having the same function are provided with the same reference numerals. For the sake of clarity, it is not mandatory for each component repeating itself in the figures to be marked again in each figure.

The FIG. 1 shows a side view and the FIG. 2 a plan view of a first embodiment of an air distribution device 1 according to the invention comprising a housing 2. On the housing 2 , a nozzle 3 for indirect connection with an air supply system 4 is arranged. Supply air (arrow 6 ) from the air supply system 4 is introduced into an air distribution chamber 7, which is delimited by the housing 2 , via an air inlet cross section 5 . The air inlet cross section 5 is aligned in the example shown in an advantageous manner perpendicular to a central axis 21 of the housing 2 . This has the consequence that the supply air is introduced into the housing 2 in a direction parallel to the central axis 21 . The housing 2 has an air outlet 8 with a horizontally arranged air outlet surface 9 , the air outlet surface 9 being formed by a perforated ceiling panel 10 . The "horizontal orientation" of the air outlet surface 9 is based on a typical arrangement of the air distribution device 1 according to the invention on or in a ceiling of a room. The air outlet surface 9 is particularly preferably oriented perpendicular to the central axis 21 of the housing 2 and thus parallel to the air inlet cross section 5 . A first partial volume flow (arrow 11 ) leaves the air distribution chamber 7 via the air outlet surface 9 in an approximately horizontal, that is to the air outlet surface 9 parallel direction, so that the first partial volume flow (arrow 11 ) along a bottom 42 of the ceiling panel 10 flows into a space 12 , In the example shown, the first partial volume flow of the supply air is thus deflected by approximately 90 ° starting from the nozzle 3 . This slight deflection is advantageous insofar as a flow resistance of the air distribution device 1 and thus a caused by the air distribution device 1 energy consumption are low.

The air outlet 8 is composed of four walls 13, which are arranged at an angle α of 15 ° to the air outlet surface 9 , and a cuboid transition piece 14 together. At the transition piece 14 , a plurality of nozzles 15 in two rows 16, 17 are arranged, wherein the respective rows 16, 17 are located on both sides of an axis 18 of the housing 2 . The axis 18 of the housing 2 is arranged parallel to a transverse axis 19 of the ceiling element 10 . A longitudinal axis 20 of the respective nozzles 15 is arranged perpendicular to a central axis 21 of the housing 2 and parallel to a longitudinal axis 22 of the ceiling panel 10 . Consequently, a second partial volume flow (arrow 23 ) of the supply air 6 flows above a top side 24 of the ceiling panel 10 facing away from the space 12 along the longitudinal axis 22 and parallel to a surface 25 of the ceiling panel 10 .

Moreover, further nozzles 26 (in the FIG. 2 merely shown as arrows) are arranged on the transition piece 14 such that a longitudinal axis 30 of these nozzles 26 extends perpendicular to the longitudinal axis 22 of the ceiling panel 10 and parallel to the surface 25 of the ceiling panel 10 . Thus, the supply air of the second partial volume flow (arrow 23 ) additionally emitted perpendicular to the longitudinal axis 22 of the ceiling panel 10 and parallel and above the surface 25 of the ceiling panel 10 .

Furthermore, heat exchanger elements 28 in the form of meandering tubes 29 or channels are located on the upper side 24 of the ceiling panel 10 facing away from the space 12 . Through the tubes 29 , a heat transfer medium, such as water, passed to in particular the supply air of the second partial volume flow (arrows 23 ), which flows through the nozzles 15 and marked with arrow 26 nozzles above the ceiling panel 10 along to cool or heat accordingly , The tubes 29 are preferably connected to a not shown here water supply line system.

In the FIG. 3 a plan view of a second embodiment of the air distribution device 1 is shown. The housing 2 and the air outlet 8 is formed elongated and has a plurality of nozzles, not shown here, which are arranged in two rows 16, 17 . The longitudinal axes 20 of the respective nozzles are arranged parallel to the longitudinal axis 22 of the ceiling panel 10 and on both sides of the axis 18 of the air outlet 8 , so that an air flow of the second partial volume flow, marked with the arrows 23, only above the top 24 of the ceiling panel 10 parallel to the longitudinal axis 22nd the ceiling panel 10 and on both sides of the axis 18 of the housing 2 takes place. The first partial volume flow, not shown here, leaves the air outlet 8 in the horizontal direction through the air outlet surface, not shown here.

The FIG. 4 shows a space 12 from above with three air distribution devices 1 arranged side by side . The second partial volume flow (arrows 23 ) leaves the air distribution chamber, not shown here, in an approximately horizontal direction along the upper side 24 of the respective ceiling panel 10, both sides of the nozzle Axis 18 of the respective housing 2 and parallel to the longitudinal axis 22 of the respective ceiling panel 10. So that the air currents do not interfere with each other, there is no horizontal outflow of the first and second partial volume flow of supply air perpendicular to the longitudinal axis of the ceiling panel 10 .

A further alternative embodiment of the air distribution device 1 according to the invention shows the FIG. 5 in a side view. The structure of the air distribution device 1 largely corresponds to the air distribution device 1 according to the embodiment in the FIG. 1 , But in the transition piece 14 further nozzles 31 are arranged, the longitudinal axis 36 disposed parallel to the central axis 21 of the housing 2 and perpendicular to the longitudinal axis is not shown here of the ceiling panel 10 are. This results in an upward direction of a ceiling 32 of the space 12 directed outflow of the second partial volume flow (arrow 33 ). In particular, at night, the cool night air can be used to cool the ceiling 32 in the room 12 , so that the chilled ceiling 32 can be used during the day, the second partial volume flow (arrow 33 ) of the supply air flowing along the ceiling 32 in the course to cool the day. Additional cooling of the second partial volume flow by means of the heat exchanger elements 28 would thus only be necessary if the ceiling 32 is no longer sufficiently cool.

Typically, the cooling capacity of the ceiling 32 is insufficient to adequately cool the supply air throughout the day, for which reason the second partial volume flow (arrow 33 ) is subsequently conducted along the cooling heat exchanger elements 28 in order to be actively cooled there. In order to allow a deflection of the second partial volume flow 23 , located in the transition piece 14 of the air outlet eight shut-off valves 34 in the form of flaps 35, either the nozzles 31, which allow the supply air to flow out in the direction of the ceiling, or the nozzles 15, the one Outflow of supply air along the heat exchanger elements 28 allow in an approximately horizontal direction, can close. Depending on requirements, cooling of the second partial volume flow (arrows 23, 33 ) of the supply air thus takes place through the ceiling 32 or through the heat exchanger elements 28 .

In the FIG. 6 a ceiling panel 10 is shown from an upper side with three air distribution devices 1 arranged side by side. The structure of the air distribution devices 1 largely corresponds to the structure of the air distribution device 1 according to the FIG. 1 , However, these air distribution devices 1 have no nozzles which are arranged perpendicular to the longitudinal axis 22 of the ceiling panel 10 and parallel to the axis 18 of the housing 2 . Such aligned nozzles would namely let the supply air of the respective air distribution device 1 in an approximately horizontally and perpendicular to the longitudinal axis 22 of the ceiling panel 10 flow, so that the flow rates would interfere with each other. The resulting flow behavior would not be desirable. If the air distribution devices 1 still have such aligned nozzles, they could be blocked by means of a corresponding obturator, so that no supply air can flow out. Furthermore, located on the top 24 of the ceiling panel 10, the heat exchanger elements, which are not shown in the figure.

The FIG. 7 shows the ceiling panel 10 according to FIG. 6 , wherein the air distribution devices have been removed, so that the air outlet surfaces 9 of the respective air outlets are visible. On the air outlet surfaces 9 are triangular Plates 37, which prevent an outflow of the first partial volume flow, not shown here, perpendicular to the longitudinal axis 22 of the ceiling panel 10 in an approximately horizontal direction along the underside of the ceiling panel 10 . For an outflow of the supply air in this direction would lead to a mutual obstruction of the partial volume flows of the respective air distribution devices 1 . Consequently, the first partial volume flow of the respective air distribution device 1 due to the triangular plates 37 is guided only parallel to the longitudinal axis 22 of the ceiling panel 10 and approximately horizontally below the ceiling panel 10 along the bottom.

Another embodiment of an air distribution device 1 is in the FIG. 8 shown. The housing 2 comprises the air outlet 8 and an air distribution box 38 in which the air outlet 8 is arranged, the air outlet 8 and the air distribution box 38 being made in one piece. The air inlet cross section 5 is now arranged on the air distribution box 38 . Via the air inlet cross-section 5 , the supply air from the air supply system not shown here in a first region 39 of the air distribution chamber 7 is passed . The first partial volume flow (arrow 11 ) is introduced via an inflow funnel 40 from the first region 39 into a second region 41 of the air distribution chamber 7 and leaves the air outlet 8 via the horizontally arranged air outlet surface 9. The second partial volume flow (arrow 23 ) is from the first region 39 of the air distribution chamber 7 via nozzles 15 along the top 24 of the ceiling panel 10 out. The nozzles 15 are arranged on the air distribution box 38 of the housing 2 , wherein a longitudinal axis 20 of the nozzles 15 is arranged parallel to the longitudinal axis of the ceiling panel 10 , not shown here, and perpendicular to the central axis 21 of the housing 2 .

The housing 2 may be formed both square and elongated, as this example was also shown in the previous embodiments. Furthermore, in this embodiment, it is also conceivable that additionally nozzles, not shown here, are arranged above the upper side 24 of the ceiling panel 10 on the housing 2 , whose longitudinal axis is perpendicular to the longitudinal axis of the ceiling panel 10 and perpendicular to the central axis 21 of the housing, and / or are arranged parallel to the central axis of the housing 2 and perpendicular to the longitudinal axis of the ceiling panel 10 .

LIST OF REFERENCE NUMBERS

1

air distribution

2

casing

3

Support

4

Air supply system

5

Air inlet cross-section

6

supply air

7

air distribution

8th

air outlet

9

Air outlet area

10

ceiling

11

first partial volume flow

12

room

13

wall

14

Transition piece

15

jet

16

line

17

line

18

Axis of the housing

19

transverse axis

20

Longitudinal axis of the nozzles

21

Central axis of the housing

22

Longitudinal axis of the ceiling panel

23

second partial volume flow

24

top

25

surface

26

jet

27

longitudinal axis

28

Heat exchanger element

29

Tube

30

longitudinal axis

31

jet

32

ceiling

33

arrow

34

shutoff

35

flap

36

Longitudinal axis nozzles

37

plate

38

air distribution

39

first area air distribution box

40

inflow funnel

41

second area

42

bottom

α

corner

Claims (15)

Air distribution device (1) comprising a housing (2) which delimits an air distribution space (7) for at least indirect connection to an air supply system, the housing (2) having an air inlet cross section (5) through the supply air (6) into the air distribution space ( 7), wherein the housing (2) has an air outlet (8) with a horizontally arranged air outlet surface (9), wherein walls (13) of the air outlet (8) at an acute angle (a) between 5 ° and 22 ° to the air outlet surface (9) are arranged and the air outlet surface (9) of a perforated ceiling panel (10) through which a first partial volume flow of the supply air (6) the air outlet (8) and guided along a bottom (42) of the ceiling panel (10 ) in a space to be ventilated (12) can be flowed off, wherein on a the ventilated space (12) facing away from the top (24) of the ceiling panel (10) heat exchanger elements (28) are arranged, characterized in that at the housing (2) above the top (24) of the Deckenpaneels (10) at least two nozzles (15) are arranged such that longitudinal axes (20) of the nozzles (15) each parallel to a longitudinal axis (22) of the ceiling panel (10) and run parallel to a surface (25) of the ceiling panel (10) and the nozzles (15) on both sides of an axis (18) of the housing (2), wherein the axis (18) parallel to a transverse axis (19) of the ceiling panel (10 ) runs. Air distribution device (1) according to claim 1, characterized in that on the housing (2) above the top (24) of the ceiling panel (10) at least one further nozzle (26) is arranged such that a longitudinal axis (27) of the nozzle (26 ) perpendicular to the longitudinal axis (22) of the ceiling panel (10) and parallel to the surface (25) of the ceiling panel (10). Air distribution device (1) according to claim 1 or 2, characterized in that on the housing (2) above the upper side (24) of the Deckenpaneels (10) at least one further nozzle (31) is arranged such that a longitudinal axis (36) of the nozzle (31) perpendicular to the longitudinal axis (22) of the ceiling panel (10) and perpendicular to the surface (25) of the ceiling panel (10), wherein an outflow direction of the supply air from the nozzle (25) of the ceiling panel (10) is directed away , Air distribution device (1) according to one of claims 1 to 3, characterized in that the air inlet cross section (5) is oriented parallel to the air outlet surface (9), wherein Air distribution device (1) according to one of claims 1 to 4, characterized in that the at least two nozzles (15) are arranged on the air outlet (8), in particular on a cuboid shape having transition piece (14) of the air outlet (8). Air distribution device (1) according to one of claims 1 to 4, characterized indicates that the housing (2) has an air distribution box (38), wherein the at least two nozzles (15) are arranged on the air distribution box (38). Air distribution device (1) according to one of claims 1 to 6, characterized in that a to a nozzle (15) leading flow path by means of at least one adjustable obturator (34) is completely or partially blocked. Air distribution device (1) according to claim 7, characterized in that the obturator (34) in the form of a pivotable flap (35) is formed. Air distribution device (1) according to one of claims 1 to 8, characterized in that the ceiling panel (10) has perforations or holes which preferably define a free cross-section of about 13% to 22%, more preferably 16%, of the perforated or perforated total area , Air distribution device (1) according to one of claims 1 to 9, characterized in that the air outlet (8) is truncated pyramidal. Air distribution device (1) according to one of claims 1 to 9, characterized in that the Deckenpaneel (10) is rectangular and the air outlet (8) is elongated in plan view. Air distribution device (1) according to one of claims 1 to 11, characterized in that the heat exchanger elements (28) comprise tubes (29) which are arranged meander-shaped on the ceiling panel (10). Room (12) of a building with at least one air distribution device according to one of claims 1 to 12, wherein the ceiling panel (10) designed in the form of a ceiling sail and in the space (12) is freely visible. Method for ventilating a room (12) in a building by means of an air distribution device (1) comprising the following method steps: a) through an air inlet cross section (5) of a housing (2) supply air (6) is introduced into one of the housing (2) limited air distribution space (7). b) A first partial volume flow of the supply air (6) leaves the air distribution space (7) through a horizontally arranged, by a perforated ceiling panel (10) formed air outlet surface (9) of an air outlet (8), and then flows along a bottom (42) of the Ceiling panel (10) of the air distribution device (1) in the space to be ventilated (12), wherein the housing (2) the air outlet (8) with the air outlet surface (9), and walls (13) of the air outlet (8) in an acute Angle (a) between 5 ° and 22 ° to the air outlet surface (9) are arranged, characterized by the following method step: c) In a position of use of the air distribution device (1), a second partial volume flow of the supply air (6) flows via at least two nozzles (15) arranged on the housing (2) out of the air distribution space (7), wherein the second partial volume flow above one with heat exchanger elements (28 ) provided top (24) of the ceiling panel (10), parallel to a longitudinal axis (22) of the ceiling panel (10) and on both sides of an axis (18) of the housing (2) parallel to a transverse axis (19) of the ceiling panel (10). is arranged, and thus flows along the heat exchanger elements (28). A method according to claim 14, characterized in that in a second position of use of the air distribution device (1) the second partial volume flow by means of further on the housing (2) located nozzles (26) from the air distribution space (7) in an approximately perpendicular to the Deckenpaneel (10). and parallel to a central axis (21) of the housing (2) extending direction is led out, so that the second partial volume flow along a ceiling (32) of the space (12) flows.

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