EP0236683B1 - Air inlet, air outlet and/or air distribution device, in particular a ventilating device for confined spaces - Google Patents

Abstract

The air inlet, outlet and/or distributor for room ventilation has a rectangular housing with air apertures in one or more longitudinal walls. A swivel flap inside the housing connects with the apertures, to shut off or direct the air flow. In the open position it is at an acute angle to the wall containing the apertures. Two longitudinal walls at right angles form a corner (6) fitting into the room corner. The flap (10) swivels w.r.t. the wall (7) containing the apertures (11) near the edge of one of the walls (6b) forming the corner away from the latter (7f,10b). In the open position, the flap is at an obtuse angle to the room surface (12,25), extending from the wall contg. the apertures.

Description

The invention relates to an air inlet, air outlet and / or air distribution device, in particular a ventilation device, for rooms with a cuboid housing having a rear wall and with air passages arranged or formed in the longitudinal wall thereof, for example in the form of grille perforations, which have a swivel flap within the housing is assigned as a closure and air guiding element, the pivoting flap in its open position being inclined at an acute angle relative to the longitudinal wall of the housing containing the air passages, the pivoting flap being mounted on or near the longitudinal edge of the longitudinal wall containing the air passages coupled to a longitudinal frame of the rear wall, wherein on which the section or part of the rear wall adjacent to the mounting for the swivel flap sits a profile body made of sound-absorbing material, against which the swivel flap can be placed in its open position, and wherein the rear wall has at least one opening has as an air inlet or air outlet opening for an air duct and muffler duct, which is kept clear for the air passage over the swivel flap.

There have long been known ventilation devices for rooms with a rectangular housing, in which air passages are arranged or formed in at least one longitudinal wall of the same, to which a swivel flap is assigned as a closure and air guiding element, the swivel flap being inclined at an acute angle in relation to that Housing longitudinal wall containing air vents (DE-GM 19 43 099).

In these known ventilation devices, however, there is an inadequacy in that the pivoting flap has to be moved outwards relative to the housing into its open position. It therefore projects in its open position relatively far beyond the level of the housing wall containing the air passages and is therefore sensitive to external forces and the resulting deformations.

The known ventilation devices can therefore generally be installed only in such places where there is no risk that the pivoting flap is subjected to deformation stresses in an undesirable manner. Therefore, the well-known ventilation devices in the area of the installation openings for windows and doors are housed. There they are either so high that they are not easily accessible from the floor or they are on the window sill, where they are overhanged sufficiently far through the windowsill towards the room.

However, ventilation devices of the type specified at the outset are also known, in which the pivoting flap provided as a closure and air guiding element is thus accommodated within the housing and is thus also protected against mechanical loads acting from outside.

The known ventilation device is so-called wall ventilator, which can be mounted practically anywhere on the inside of a room wall and only requires a channel-like opening in this wall to establish the connection with the outside air (DE-GM 84 00 940).

The ventilation devices according to DE-GM 84 00 940 have already proven their worth in practical use. Namely, they can be designed as sound-absorbing ventilation devices with relatively little technical effort and, at the same time, they can be put into operation by installing an electrically driven blower, in particular a radial blower, for forced ventilation of rooms.

While the ventilation devices known from DE-GM 19 43 099 regularly have a relatively large overall length in relation to their cross-sectional dimensions, the ventilation devices according to DE-GM 84 00 940 are used with dimensions in which the overall width of the housing is approximately twice and the height of the same corresponds to about four times its depth.

For optimal operation of the ventilation devices according to DE-GM 84 00 940, it is important that their housings are mounted on the inner surfaces of building walls so that each of the two longitudinal walls of the housing, which are parallel to one another and provided with air passages, are at a sufficiently large distance from such room areas , which can impair the flow behavior of the air along the wall of the room carrying the ventilation device. A ventilation device according to DE-GM 84 00 940 cannot be mounted directly in the area of two boundary surfaces of rooms that meet at an angle if it is to have its optimal effect with regard to draft-free room ventilation.

The invention is therefore based on the object to provide a usable as an air inlet-air outlet and / or air distribution device for rooms ventilation device of the generic type, which can be easily installed in all corner areas on the inside of rooms and with the desired length dimensions, whereby the use of the each under a predetermined - z. B. a right angle to the housing openings containing the air vents adjacent space boundary surface is guaranteed as an air baffle.

The set aim is achieved according to the characterizing part of claim 1 in that the rear wall is formed with two longitudinal walls of the housing which are essentially at right angles to one another from a one-piece laminate profile which has an angled longitudinal frame at the free leg ends that the other two housings -Longitudinal walls, on the one hand, can be detachably coupled with one of their longitudinal edges to the longitudinal edges of the laminated body profile, and, on the other hand, can be detachably coupled to one another on their adjacent longitudinal edges, and that a distance remains between the profile body and one of the longitudinal walls of the housing or the sound absorbing material fastened thereon the entire length of the housing determines the air duct and silencer duct.

It is also important according to claim 2, however, that the or each opening can be preceded by a shielding plate within the housing.

Within the scope of the invention it is further provided according to claim 3 that plates, strips or profiles made of sound-absorbing material, e.g. Foam rubber or foam plastic are used, thereby achieving a sound-absorbing effect.

In many cases, however, it may be advisable that according to claim 4 in the housing, at least over the length of the shielding plate, filter material, for. B. in the form of folds made of paper, fleece or the like, can be used.

According to claim 5, the invention further provides that the pivoting flap consists of a profile having two obtuse angles to one another, while according to claim 6 each pivoting flap is adjusted between its closed position and its open position by a rotary knob or toggle mounted on the second longitudinal wall of the housing via a crank pin can, which engages in a curved slot provided on the free leg of the swivel flap.

According to claim 7, it has proven particularly useful according to the invention that the longitudinal walls of the cuboid housing are each formed by extruded profiles made of light metal or plastic, while it has transverse walls which are manufactured as molded parts from light metal die-casting or plastic injection molding. The installation angle can be formed by a sheet metal bent molding. But it can also be an extruded profile made of light metal or plastic.

It is according to claim 8 further within the scope of the invention that a plurality of swivel flaps is arranged distributed over the length of the housing and each of them is in adjustment connection with its own rotary knob or knob.

It is also possible according to claim 9, that each breakthrough of the installation angle in the housing or in an adjacent duct Fan, for example an axial fan or a tangential fan, is assigned.

According to claim 10 it is provided that the transverse walls of the housing are connected at least to the two legs of the installation angle, but preferably also to the longitudinal wall of the housing containing the air passages.

According to claim 11, heating and / or cooling elements can be provided within the housing, while according to claim 12 there is also the possibility that two housings are mitred in a corner of the room and are in flow connection with one another.

Fig. 1

in räumlicher Ansicht von oben und vorne eine zur Luftverteilung über einen größeren Raumbereich ausgelegte Lüftungsvorrichtung,

Fig. 2

in größerem Maßstab einen Schnitt entlang der Linie II - II durch die Lüftungsvorrichtung nach Fig. 1 bei geöffneter Schwenkklappe,

Fig. 3

einen der Fig. 2 entsprechenden Schnitt durch die Lüftungsvorrichtung bei geschlossener Schwenkklappe,

Fig. 4

eine Ansicht in Pfeilrichtung IV der Fig. 2,

Fig. 5

eine Ansicht in Pfeilrichtung V der Fig. 3,

Fig. 6

in perspektivischer Prinzipdarstellung verschiedene Anordnungsmöglichkeiten für Lüftungsvorrichtungen in einem Raum und

Fig. 7

in schematisch vereinfachtem und verkleinertem Querschnitt das Wirkprinzip einer Lüftungsvorrichtung im Eckbereich eines Raumes.

Further features and advantages of the subject matter of the invention are subsequently explained using the exemplary embodiments illustrated in the drawing. It shows

Fig. 1

in a spatial view from above and in front, a ventilation device designed for air distribution over a larger area,

Fig. 2

on a larger scale, a section along the line II - II through the ventilation device according to FIG. 1 with the swivel flap open,

Fig. 3

2 shows a section corresponding to FIG. 2 through the ventilation device with the swivel flap closed,

Fig. 4

2 shows a view in the direction of arrow IV of FIG. 2,

Fig. 5

3 shows a view in the direction of the arrow V in FIG. 3,

Fig. 6

in a perspective representation of the principle different arrangement options for ventilation devices in a room and

Fig. 7

In a schematically simplified and reduced cross section, the principle of action of a ventilation device in the corner area of a room.

In the drawing, a ventilation device 1 for rooms is shown, which can be operated as an air inlet, as an air outlet and / or air distribution device. In the simplest case it can be used for so-called differential pressure ventilation of rooms and is therefore connected to the outside air on the one hand, while on the other hand it can be brought into and out of flow connection with the room to be ventilated.

However, the ventilation device can also be designed so that it provides decentralized forced ventilation and / or forced ventilation of the rooms allows. Here, a fan, for example an electrically driven one, is assigned to it.

Finally, this ventilation device 1 can also be used as an air inlet, air outlet and / or air distribution device for ventilation and air conditioning systems.

Fig. 1 of the drawing shows that the ventilation device 1 has a cuboid housing 2 that can be designed with a relatively large overall length 5 with a relatively small cross-sectional height 3 and also a relatively small cross-sectional width 4.

It is advantageous for the intended uses if the cross-sectional height 3 and the cross-sectional width 4 of the housing 2 is approximately between 80 mm and 120 mm, while the overall length 5 can easily be dimensioned up to several thousand millimeters.

According to FIGS. 2 and 3, the housing 2 has a profile serving as an installation angle 6, which can be manufactured from sheet metal as a folding profile, but is preferably an extruded profile made from light metal or plastic. This mounting bracket 6 has two legs 6a and 6b directed essentially at right angles to one another, on the free longitudinal edges of which an angled longitudinal frame 6c or 6d is in turn connected.

The housing 2 also has a longitudinal wall 7 and a longitudinal wall 8 which are essentially at right angles to one another. The longitudinal wall 7 is connected to the longitudinal frame 6d on the leg 6b of the mounting bracket 6 in the area of its one longitudinal edge 7a, while the longitudinal wall 8 in the area of its one longitudinal edge 8a can be detachably coupled to the longitudinal frame 6c on the leg 6a of the mounting bracket 6. On the mutually facing longitudinal edges 7b and 8b, the two longitudinal walls 7 and 8 are brought into releasably positive locking engagement with one another, by means of their entire length continuously claw-like pivoted sections 7c and 8c. In the area of the coupling point 7c, 8c between the two longitudinal walls 7 and 8, the housing is provided with a corner rounding 9 which extends over its entire length and which is for example molded onto the longitudinal wall 8.

Both the longitudinal wall 7 and the longitudinal wall 8 of the housing are made as an extruded profile made of light metal or plastic, the profile part 7c being designed as an arcuate profiled longitudinal groove, while the profile part 8c is designed to match this as an arcuate coupling web. On the inside of the longitudinal wall 7, in the vicinity of its longitudinal edge 7a, an arc-shaped bead 7d is formed, which, together with a profile lug 7e, delimits a groove 7f which is circular in cross-section.

A pivoting flap 10 is mounted in the circularly profiled groove 7f via a longitudinal edge section 10b which is profiled in the form of a circular arc and which is located on a leg 10a. However, the swivel flap 10 also has an arm 10c at an obtuse angle to the arm 10a.

The swivel flap 10 with its legs 10a and 10c and the longitudinal edge section 10b is also made as an extruded part made of light metal or plastic. The leg 10a of the swivel flap 10 interacts with the longitudinal wall 7 of the housing 2, in which there are air passages 11 distributed over the entire length, for example in the form of grid perforations or longitudinal slots. If the leg 10a of the swivel flap 10 lies parallel to the inside of the longitudinal wall 7, then it closes the air passages 11, as can be seen in FIG. 3. However, if the swivel flap 10 is pivoted about its bearing point 7f, 10b in such a way that its leg 10c assumes an acute-angled position relative to the longitudinal wall 7, as shown in FIG. 2, then the air passage openings 11 are Housing 2 released. In this case, the leg 10c of the swivel flap 10 assumes a position within the housing 2 that extends approximately parallel to the plane of the longitudinal wall 8 of the housing 2. Since the surface 12, which can be the inner surface of a room wall, the floor or the ceiling, extends approximately at right angles to the longitudinal wall 7 or parallel to the longitudinal wall 8 of the housing, the leg 10a of the swivel flap 10 assumes an open position as shown in FIG. 2 obtuse-angled position relative to the area of the surface 12 which leads away from the longitudinal wall 7.

The inner surfaces of the legs 6a and 6b of the mounting bracket 6 and at least also the longitudinal wall 8 can be covered with a sound-absorbing material, for example foam rubber or foam plastic, as can be seen in FIGS. 2 and 3. A profile body 13 made of soundproofing material can be seated on the leg 6b of the mounting bracket 6, which is shaped such that the legs 10a and 10c of the swivel flap 10 rest in their open position on the surfaces of this profile body 13 facing them (FIG. 2).

On the other hand, the profile body 13 is designed such that a distance 15 remains between it and the leg 6a of the installation angle 6 or the sound absorbing material 14a fastened thereon.

For example, the leg 6a of the mounting bracket 6 is provided with at least one opening 16 which serves as an air inlet or air outlet opening for the housing and can be brought into flow connection with a wall opening 17.

In the area of this opening 16, a shielding plate 18 is inserted into the housing 2 at a distance from the leg 6a, which in the example consists of an angular profile with the two legs 18a and 18b. This shield plate 18 is designed and arranged so that it is in the open position the swivel flap 10 shields at least the area against the room side which is open above the leg 10c of the swivel flap 10. The length of the shielding plate 18, or at least its leg 18b, is dimensioned such that it or he projects beyond the opening 16 in the longitudinal direction of the housing by a considerable amount. The distance 15 between the sound-absorbing materials 13 and 14a determines an air duct and sound-damping channel 19 over the entire length of the housing 2, which is also limited in the area of the opening 16 by the shielding plate 18, while over the adjoining length sections for the air passage the swivel flap 10 is kept clear.

Of course, the shielding plate 18 in the area of the opening 16 can also extend over the entire height of the housing 2, as is indicated in FIGS. 2 and 3 by dash-dotted lines. The shielding plate 18 in the area of the opening 16 can, however, also be replaced by a profile piece 14c made of sound-absorbing material, which is possibly connected to the sound-absorbing material 18b on the longitudinal wall 8.

The pivoting flap 10 can be adjusted between its open position (FIG. 2) and its closed position (FIG. 3) by means of a rotary knob or knob 20 mounted on the longitudinal wall 8 of the housing via a crank pin 21. This crank pin 21 engages, as indicated in FIGS. 4 and 5, through an arcuate slot 22 in the longitudinal wall 8 into a curved slot slot 23, which is located in the free leg 10c of the swivel flap 10. The length of the crank pin 21 is dimensioned such that it constantly engages with the curved link slot 23 over the entire range of motion of the pivoting flap 10.

Fig. 6 of the drawing shows in which areas of a room to be ventilated and / or air-conditioned ventilation devices 1 of the can be arranged with reference to FIGS. 1 to 5 described. For example, they can be provided directly in the corner area between the ceiling and a wall. However, they can also be provided in the corner area between the floor and a room wall. Installation in the corner area between two upright room walls is also possible.

Finally, it is also made clear in FIG. 6 that two housings 2 can be mitred against one another in the area of a corner of the room so that they are in flow connection with one another, that is to say form an angular ventilation device 1.

While a ventilation device 1 of the type shown in FIG. 1 is closed at both ends by a transverse wall 24, in the angular ventilation device 1 according to FIG. 6 only each of the two housing legs has such a transverse wall 24 at its free ends the two housing legs of the angular ventilation device are expediently connected to one another with the interposition of a sealing frame.

The transverse walls 24 are connected at least to the two legs 6a and 6b of the installation bracket 6, for example by screw connections. However, a holding connection between the transverse walls 24 and the longitudinal housing wall 7 is also expediently provided. For this purpose, the transverse walls 24 may have pin-shaped lugs on their inside, which come with plug-in coupling engagement with appropriately profiled channels 7g of the longitudinal wall 7.

It should also be pointed out that in the ventilation devices 1 of the type described above, air filters, for example in the form of folding bodies made of paper, fleece or the like, can also be used, which then at least in the region of the opening 16 between the leg 6a of the installation angle 6 and the shield plate 18b are held.

To hold the filter material, it is advisable to design the shielding plate 18 over its entire length as a laterally open U-profile, which can be installed and removed together with the filter material after removal of the longitudinal side wall 8.

It is also possible to provide heating and / or cooling elements within the housing 2 of the ventilation device. The space which is below the same when the swivel flap 10 is open can advantageously be used to accommodate it.

In many cases, it may prove to be advisable to arrange a plurality of swivel flaps over the respective length 5 of the housing 2 and to bring each of them into adjustment connection with its own rotary knob or knob 20. In this way it is in fact possible to vary the position of the respectively effective air passages 11 towards the room side as required.

In Fig. 7 of the drawing it can be seen, for example, that the ventilation device 1 is placed in the corner zone of a room, for example between the floor 25 and an upright wall 26. The arrangement is such that the longitudinal wall 7 of the housing 2 extends at right angles to the plane of the bottom 25 or parallel to the plane of the wall 26.

When the swivel flap 10 is in the open position, the air guided in the housing 2 is blown out of the air passages 11 of the longitudinal wall 7, and is directed against the bottom surface 25 at an obtuse angle from top to bottom. The air flow is horizontally deflected sideways through the bottom surface 25, as indicated by the arrows 27. The air jet settles on the floor surface and flows along it - due to the so-called Koanda effect - over a certain length section before it can detach from it.

As a result of this flow effect of the air introduced into the room, a suction effect directed against the floor 25 occurs inside the room, namely in the area in front of the longitudinal side wall 7 of the housing 2, which pulls the room air up to the edges of the air passages 11 closest to the housing longitudinal wall 8 , as is indicated by the dash-dotted arrows 28. The room air 28 drawn in along the room wall 26 towards the floor 25 is then intensively mixed with the air entering through the ventilation device 1 by swirling.

Apart from the fact that in this way the air entering the room contributes to a significant improvement in the quality of the existing room air, there is also the considerable advantage that a large part of the heat energy contained in the room air is transferred to the newly supplied air passes, with which this can have a higher temperature than its inlet temperature after its detachment from the bottom.

This mode of operation of the ventilation device 1 largely prevents unpleasant drafts within the ventilated room.

It goes without saying that the ventilation devices 1 can be installed in all corner areas of rooms in such a way as is necessary for the desired air flow.

In the installation area of radiators, it may be advisable to arrange the ventilation devices 1 below the same so that the air passages 11 are directed upwards away from the floor 25 and thus the incoming air can be heated by the radiators. Through simultaneous arrangement of several ventilation devices 1 in different corner areas of rooms (see FIG. 6) and suitable choice of their installation position, air flow profiles corresponding to the different needs can be generated within the room.

The main advantage of the ventilation device shown in the drawings and described in detail above lies not only in the fact that it has a simple assembly and therefore particularly easy to maintain and repair, but also that a good air throughput can be achieved with a structurally small size. Damage to the swing flaps is not to be feared even when the ventilation devices are installed in extreme positions.

Claims (12)

1. A device for air intake, air outlet and/or air distribution, more particularly a room ventilator (1) having: a parallelepipedic casing (2) having a back wall; and air passages, for example, in the form of a lattice of apertures (11), which are disposed or contrived in a long wall (7) of the casing (2) and with which a pivoted flap (10) in the casing (2) is associated as closure and air-guiding element, the pivoted flap (10) being disposed when in its open position at an acute angle to the casing long wall (7) formed with the air passages, the pivoted flap (10) being mounted (7f, 10b) on or near that longitudinal edge (7a) of the air-passage-containing longitudinal wall (7) which is coupled wtih a longitudinal member (6d) of the rear wall, a sound-absorbent moulding (13) being disposed on that part (6b) of the rear wall which is adjacent the mounting (7f, 10f) for the pivoted flap (10), the same being engageable with the moulding (13) when in its open position, the back wall being formed with at least one aperture (16) as air entry aperture or air exit aperture for an air-guiding and sound-damping channel (19) which is kept open for the passage of air beyond the pivoted flap (10), characterised in that the rear wall is formed with two casing longitudinal walls (6a, 6b), which are substantially perpendicular to one another, from a unitary laminated section (6) having at the free ends of the arms a bent longitudinal member (6c, 6d); the other two casing longitudinal walls (7, 8) can be releasably coupled at one end by way of one of their longitudinal edges (7a, 8a respectively) to the respective longitudinal edges (6d, 6c) of the laminated section (6) and can be releasably interconnected at their other end by way of their adjacent longitudinal edges (7b, 8b),
   and there remains between the moulding (13) and one (6a) of the casing long walls (6a, 6b) or the sound-absorbent material (14a) secured thereto a gap (15) which extends over the whole length of the casing (2) and determines the air-guiding and sound-damping channel (19).
2. A ventilator according to claim 1, characterised in that a screening plate (18) is so mounted in the casing (2) as to be disposed at a distance before the or each aperture (16).
3. A ventilator according to claim 1 and/or 2, characterised in that panels or strips or sections (13, 14a, 14b, 14c) of sound-absorbent material, for example, of sponge rubber or foam plastics, are introduced into the casing (2).
4. A ventilator according to claim 2, characterised in that filter material, for example, in the form of corrugated members of paper or fleece or the like, is introducible into the casing (2) at least beyond the length of the screening plate (18).
5. A ventilator according to any of claims 1 to 4, characterised in that the pivoted flap (16) is a section having two arms (10a, 10c) disposed at an obtuse angle to one another.
6. A ventilator according to any of claims 1 to 5, characterised in that the pivoted flap (10) is adjustable between its closed position and its open position through the agency of a rotatable knob or toggle (20) mounted on the casing long wall (8) and of a crank pin (21) which engages in a camming slot (23) in the free arm (10c) of the pivoted flap (10).
7. A ventilator according to any of claims 1 to 6, characterised in that the long walls (7, 8) and possibly the insert angle member (6) of the parallelepipedic casing (2) are devised from extruded sections of light metal or plastics while its transverse walls (24) are light metal die-castings or plastics extrusions.
8. A ventilator according to any of claims 1 to 7, characterised in that a number of pivoted flaps (10) are distributed over casing length (5) and are each in adjustable connection (21, 23) with an associated rotatable knob or toggle (20).
9. A ventilator according to any of claims 1 to 8, characterised in that a blower, for example, an axial flow or a tangential flow blower, is associated with each aperture (16) in the angle member (6) in the casing (2) or in a duct into which the same merges outwardly.
10. A ventilator according to any of claims 1 to 9, characterised in that the cross walls of the casing (2) are connected at least to the two arms (6a, 6b) of the insert angle member (6) and preferably also to the air-passage-receiving casing longitudinal wall (7).
11. A ventilator according to any of claims 1 to 10, characterised in that heating and/or cooling elements are provided in the casing (2).
12. A ventilator according to any of claims 1 to 11, characterised in that two casings (2a, 2b) are disposed in mitred relationship in a corner of the room and are in flow connection with one another.

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