CH701880B1

CH701880B1 - Air duct system for ventilation of rooms of a building.

Info

Publication number: CH701880B1
Application number: CH14602010A
Authority: CH
Inventors: Axel Diepolder
Original assignee: Helios Ventilatoren Gmbh & Co
Priority date: 2009-09-17
Filing date: 2010-09-10
Publication date: 2014-03-31
Also published as: AT508889A2; DE102009041610B4; AT508889A3; AT508889B1; DE102009041610A1; CH701880A2

Abstract

(32) for connecting the duct elements (32), with fastenings (46, 48) for mounting the air duct system in the space, wherein the duct elements (32) are connected to one another, (32) have two planar abutment surfaces (38) which abut one another at right angles in an axially extending edge. (DE). WIPO Home services World Intellectual Property Organization , The connectors (42) being rigidly tubular and insertable into the inner channel (34) thereof at the ends of the channel members (32), the connectors (42) being secured by means of the attachment (46,48) can be mounted on a wall or ceiling of the room, and wherein, in the installed state of the system, two channel elements (32) placed on a connector (42) are carried by this connector (42), their ends are axially abutted and the connector (42 ) And its attachment (46, 48) from outside.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to an air guidance system for ventilation of rooms of a building.

For ventilating closed interior spaces of a building, air guidance systems are used which supply air coming from a central unit to rooms to be ventilated and distribute them, and, on the other hand, exhaust exhaust air from these rooms to the central unit. The central unit sucks outside air for the supply air ducts and transports the exhaust air as outgoing air into the open air. Preferably, the central unit has a heat exchanger in order to heat the sucked outside air by means of the warm exhaust air. In most cases, the supply air is supplied to the living room and bedrooms, while the exhaust air is extracted in the bathroom and kitchen. This results in a slight pressure drop from the living and sleeping areas to the rooms that are exposed to odors and moisture, Which counteracts the spread of odors and moisture from these spaces. Such an air guidance system is described, for example, in DE 20 2008 008 005 U1.

[0003] In the construction of new buildings, such air guidance systems can be integrated into the building walls. This is practically impossible in the renovation and retrofitting of old buildings and in particular of inhabited or used spaces, since this would at least involve considerable construction work and interventions in the building fabric. It is therefore known to install the subsequently installed air guidance systems horizontally in the corner of the ceiling and wall or vertically in a corner of the room in such cases. So that the air guidance system can not be disturbed as much as possible, suspended ceilings or shelterings can be used, but this is only possible with suitable room height. In other cases, the air guide tubes are covered by veneers, Which form a transition, for example, from the ceiling to the wall of the room and are adapted to the space in terms of design, color, surface structure and / or profile. Such an air guidance system is described, for example, in DE 20 2008 006 542 U1. This system, however, is complex in terms of manufacture and assembly, since the air guide pipes and the veneers have to be separately produced and installed separately.

SUMMARY OF THE INVENTION The invention is based on the object of providing an air guiding system for ventilation of rooms of a building, which can be produced cost-effectively, can also be installed quickly and simply subsequently in existing rooms and allows a visually appealing spatial design.

[0005] This object is achieved according to the invention by an air guidance system having the features of patent claim 1.

[0006] Advantageous embodiments and further developments of the invention are specified in the dependent claims.

[0007] The air guiding system according to the invention is constructed from a few simple, uniform structural elements, namely from channel elements and connectors. The channel elements are molded parts of foamed plastic, which can be produced in a uniform length and have an axially continuous inner channel for air guidance. On their outer side, the channel elements have two mutually abutting planar contact surfaces with which the channel elements can be inserted into the corner edge between the ceiling and the wall of the space or possibly also into the vertical corner edge between two walls. The remaining outer surface area of the channel elements, which then faces the room when the channel element is mounted, can be selected and designed according to the room ambience. This surface facing the room can be painted, trimmed, tiled, or the like according to the design of the wall or ceiling. The manufacture of the channel elements made of foamed plastic offers the advantage that a single molded part forms both the duct for the air duct and the thermal insulation for the air conducted in the duct and also enables the optical configuration without additional veneers.

[0008] The individual channel elements are axially juxtaposed by means of the connectors so that channel lengths corresponding to the respective dimensions of the space can be produced. The connectors can be suitably inserted into the inner channel of the channel elements, in each case two channel elements being pushed onto the connector from the opposite sides. By fitting the connectors in the inner channels of the channel elements, the abutting channel elements are connected to one another in a sealed manner by the connectors. The connectors are designed with fastenings, by means of which the connectors can be mounted on the wall or ceiling of the room. The connectors thus fulfill the dual function, To connect and seal the axially abutting channel elements and, in addition, to fasten these channel elements to the wall or ceiling of the space. The channel elements slipped onto the connector from both sides press against each other with their axial end surfaces so that the connector is completely covered from the room side and the connector and the fastening of the channel elements are invisible.

[0009] Preferably, the inner channel of the channel elements has a circular cross-section and the connectors are accordingly designed as pipes with a circular cross-section. This has the advantage that the orientation of the fastening of the connector at an angle to the cross-sectional profile of the channel elements can be freely selected. Thus, with the same connector, attachment to the wall or ceiling is optionally possible. The circular cross-section of the inner channel is particularly fluid-efficient and offers the lowest flow resistance.

[0010] The connectors are preferably rigid plastic injection molded parts, in particular their inner wall surface being smooth and graded free in order to ensure good air guidance. At the outer circumference, the connectors can be designed with grooves or wavy in order to ensure a good fit in the channel of the channel elements.

Preferably, a seal is arranged on the outer circumference which effects the fit and the sealing of the inner channel outwards.

[0011] The fastening preferably consists of a wall mount which can be mounted on the wall and a fixing element arranged on the connector. The wall holder is mounted on the wall or ceiling of the room and the connector can then be assembled with the already mounted wall holder for the mounting of the channel elements fixing element. A simple assembly is made possible by the fact that the fixing element can be snapped onto the wall holder. When installing the air guidance system, the wall brackets are first fastened to the wall or ceiling, and the channel elements, which are already connected by means of the connectors, are snapped onto these wall brackets by means of the fixing elements of the connectors. In this way, the assembly can be carried out quickly and easily, with practically no construction work and no rework being required.

[0012] Preferably, the inner channel of the channel elements is designed with a constant cross-section over its entire axial length. As a result, the channel elements produced in uniform length can be arbitrarily cut to match the installation dimensions and can be joined in any desired length by means of the connectors. The sections of the cut-off channel elements can be used at a different location in the air guidance system, so that a cost-effective material-saving installation is possible.

In order to guide the air guiding system around corners of the space, corner connectors can be used, which have the shape of a tube bent at right angles. On the two ends of this corner connector, channel elements are then slipped, which are cut to mitred, so that they abut against each other at a right angle with a joint at 45 °. Alternatively, corner channel elements can be used which have a right-angled, angled inner channel. The straight channel elements can be connected to these corner channel elements by means of the simple connectors.

[0014] Further, T-connectors can be used when branching from a channel is required, for example, to guide the air-conducting channel from a space through the wall into an adjacent space, or to form an opening for the supply air outlet or the exhaust air extraction.

[0015] The invention is explained in more detail below with reference to exemplary embodiments shown in the drawing.

[0016] FIG.

1 is a floor plan of a building as an example for the installation of the air guidance system, FIG.

2 shows a channel element in a first embodiment, FIG.

FIG. 3 shows a channel element in a second embodiment, FIG.

FIG. 4 shows a connector with attachment in the unassembled state, FIG.

FIG. 5 shows this connector with the fastening in the assembled state,

FIG. 6 shows a short connector without fastening,

7 shows a corner connector in the non-assembled state, FIG.

FIG. 8 shows this corner connector in the assembled state,

FIG. 9 shows a corner channel element,

10 shows a T-connector in the non-mounted state, FIG.

FIG. 11 shows this T-connector in the mounted state,

12 shows a T-channel element, FIG.

FIG. 13 shows a wall sleeve,

FIG. 14 shows an end cover,

FIG. 15 shows a diaphragm for volume flow adjustment and FIG

FIG. 16 shows a double distribution box.

[0017] The air guidance system according to the invention serves in particular for retrofitting existing rooms of a building. 1 shows, by way of example, the installation of such an air guidance system for ventilating the spaces of a storey housing unit.

E in the central unit 10 sucks outside air into the building via an external air line 12 and conveys the exhaust air out of the building via a supply air line 14. The sucked outside air is directed into the rooms by the central unit 10 via a double distributor 24 and a supply air line 16 or star-shaped via several supply air lines and exits into the rooms via air outlets 18. The exhaust air is sucked off by the central unit via the double distributor 24 and air openings 22 and is conveyed outwards as outgoing air. The double distributor 24 is preferably sound-absorbing.

The supply air line 16 runs, for example, in the hallway 26 of the residential unit, with supply lines 16 leading into the air outlets 18 in the inhabited rooms 28, eg, residential and sleeping rooms, from this supply duct 16 laid in the hallway 26. The exhaust air is sucked off via the air openings 22 in the rooms 30 which are odor- and / or moisture-contaminated, such as the bathroom and the kitchen. The supply of the supply air into the spaces 28 and the extraction of the exhaust air from the chambers 30 produces a slight pressure gradient from the spaces 28 to the chambers 30, which counteracts the spreading of odor- and moisture-laden air from the chambers 30. The central unit 10 preferably includes a heat exchanger in which the exhaust heat can be transmitted to the sucked outside air in order to preheat the supply air.

According to the invention, the air lines, in particular the supply air line 16, and, if appropriate, the outside air line 12 and the exhaust air line 14 of the air guidance system are designed in the manner shown in FIGS. 2 to 15 and explained in the following.

The air-conducting lines are formed by channel elements 32, as shown in FIGS. 2 and 3. The channel elements 32 are axially elongated, straight-shaped molded parts made from a foamed plastic, in particular from a closed-cell foam material and preferably from polystyrene. The channel elements 32 have an axially continuous inner channel 34, which serves for air guidance. The channel 34 can have an arbitrary cross-sectional shape per se, but the channel 34 is preferably designed with a circular cross-section. The inner channel 34 preferably has a constant, uniform cross-section over its entire axial length. This results in the advantage that, That the channel elements 32, which are preferably produced in uniform length, can be arbitrarily cut to fit the installation conditions, the same cross-section of the channel 34 being always maintained at the two ends of the channel element 32. The cutting of the channel elements 32 is, in particular, favored by the production of polystyrene, so that the exact length adjustment can be carried out during installation of the ventilation system. The manufacture of the inner channel 34 with a constant cross section over its entire axial length can be realized in various ways. For example, the channel 34 can be produced by foaming the channel elements 32 by means of a folding core. It is likewise possible to manufacture the channel elements 32 from two half-shells, which are arranged along an axially extending,

The production of the channel elements 32 from a foamed plastic produces a good thermal insulation of the inner channel 34 against the environment. This heat insulation ensures that the optionally preheated supply air can be led to the air outlets 18 of all the rakers 28 without cooling. Likewise, the good thermal insulation prevents condensation of moist room air on the outside of the channel elements 32. The closed-cell foam of the plastic ensures a smooth inner wall of the inner channel 34, so that the channel 34 has a very low airflow resistance in particular in connection with its round cross- A dirt deposit is counteracted. If necessary, the inner wall of the duct 34 can additionally be provided with an anti-

The outer jacket surface of the channel elements 32 has two axially continuous planar contact surfaces 38, which abut one another at right angles in an axially extending edge. With these right-angled contact surfaces 38, the channel elements 32 are inserted into the upper corner of the respective space between wall and ceiling or, if appropriate, also into a vertical corner between two walls. The right-angled arrangement of the flat bearing surfaces 38 ensures a good fit of the channel elements 32 into the existing space. The remaining outer peripheral surface 40 faces the space and is thus visible when the channel element 32 is inserted with the contact surfaces 38 into the space corner. This outer jacket surface 40 can be designed freely, In order to optimally adapt the channel elements 32 and thus the entire air guidance system to the space ambience and the room design. The adaptation and thus the design of the outer surface 40 can affect both its shape and its surface. FIG. 2 shows an exemplary embodiment in which the outer surface of the outer jacket is convexly curved and is designed in the form of a stucco profile. In the exemplary embodiment of FIG. 3, the outer casing surface 40 is also formed by two planar rectangular surfaces, so that the channel element 32 overall has a rectangular or square outer cross-section. The surface of the outer mantle surface 40 may be smooth or textured to accommodate the surface of the structure of the wall or ceiling. The outer mantle surface 40 may be plastered, overlaid, or wallpapered. It is also possible to cover the outer surface 40 with tiles. This allows an extremely versatile design and an optimal adaptation to the room ambience.

[0024] In order to produce an air guide line of greater length, the channel elements 32 are joined together without gaps. For this purpose, connectors 42, as shown in FIGS. 4 and 5, are used. The connectors 42 consist of a straight cylindrical tube which is preferably a rigid plastic injection molded part. The pipe cross-section corresponds to the cross-section of the inner channel 34 of the channel elements 32. If the channel 34 has a circular cross-section, the connector 42 also has a circular cross-section. The outer diameter of the tubular connector 42 corresponds to the inner diameter of the channel 34 so that the connector 42 can be inserted accurately into the channel 34 of the channel element 32. The connector 42 can have grooves at its two axial ends on the outer circumference, So that a tight and stable fit of the connector 42 results in the channel 34 of the channel element 32. Preferably, a circumferential seal 44 is arranged on the axial ends of the connector 42. The gasket 44 is resilient and pushed or sprayed onto the periphery of the connector 42. The seals 44 effect the stable and airtight seating of the connector 42 in the channel 34 of the channel member 32. The inner wall surface of the connector 42 is smooth so that the connector does not provide a flow resistance to the air flowing therethrough.

[0025] For the axial joining of two channel elements 32, these channel elements 32 are pushed onto the connector 42, respectively, with their axial ends from the opposite sides. The two channel elements 32 are connected axially aligned and mechanically stable by the fitted connector 42. The connector 42 also connects the inner channels 34 of the adjoining channel elements 32 and seals the axial butt joints between these channel elements 32 to the outside.

For holding the channel elements 32 on the wall or the ceiling of the room, the connectors 42 are provided with a fastening by means of which the connectors 42 can be fastened to the wall or ceiling. The connectors 42, which are fastened to the wall or ceiling, thereby hold cantilevered the channel elements 32, which are placed on the connectors 42, without these channel elements 32 requiring any particular fastening of their own.

The fastening of the connectors 42 consists of a wall holder 46, which is fastened to the wall of the space or preferably to the ceiling of the space, and a fixing element 48, which is arranged on the connector 42. In the exemplary embodiment shown in the drawing, the wall holder is preferably produced as a plastic injection-molded part. It has a base plate 50 with openings 52. The base plate 50 is applied to the wall or ceiling of the room and fastened to the wall or ceiling by means of the screws penetrating through the openings 52. The perforations 52 are designed in particular as long holes in order to enable an adjustment of the base plate 50 in the plane of the wall or ceiling. Two detent tongues 54 are formed on the base plate 50, Which project perpendicularly from the base plate 50 and are arranged parallel to one another and at a distance from each other. On the mutually facing surfaces of the detent tongues 54, detent grooves 56 are formed, which run parallel to the plane of the base plate 50. The base plate 50 is extended beyond one of the detent tongues 54, this extension forming a spacer 58. The fixing elements 48 are designed as two mutually parallel locking plates, which extend parallel to the central axis of the connector 42 and preferably are integrally molded onto the connector 42. The spacing of the fixing elements 48 is matched to the mutual spacing of the latching tongues 54 in such a way that the fixing elements 48 can engage between the latching tongues 54 of the wall holder 46, Wherein the outer surfaces of the fixing elements 48 facing away from one another rest against the mutually facing inner surfaces of the latching tongues 54. On their outer sides facing away from one another, the fixing elements 48 have resting grooves 60 which correspond to the catch grooves 56 of the detent tongues 54 and engage with them. If the connector 42 is inserted with its fixing elements 48 into the detent tabs 54 of the wall holder 46, the locking tabs 54 and the detent grooves 60 of the fixing elements 48 can be used to lock the connectors 42 with an adjustable distance from their central axis from the base plate 50 of the wall holder 46 become. The interengaging latching grooves 56 and 60 hold the connectors 42 in the respective latching position.

To mount the connectors 42, the wall holders 46 are first fastened to the wall or to the ceiling of the room. In this case, the spacers 58 are used to provide the base plate 50 at a precisely defined distance from the wall (when the wall holder 46 is fastened to the ceiling) or from the ceiling (when the wall holder 46 is fastened to the wall). This distance is dimensioned in such a way that the connector 42 fastened to the wall holder 46 holds the inserted channel elements 32 against the wall or ceiling. The adjoining channel elements 32 are pushed onto the connector 42 from both ends. The connector 42, together with the channel elements 32 carried by it, is then locked into the mounted wall holder 46 by means of the fixing elements 48. The latching of the fixing elements 48 by means of the latching grooves 60 into the latching tongues 54 and their latching grooves 56 makes it possible to adjust and adjust the distance of the connector 42 from the wall or ceiling on which the wall holder 46 is mounted. The second contact surface 38 of the channel elements 32 can thus also be brought into exact contact with the wall or ceiling. An adjustment in the axial direction is possible by displacing the connectors 42 by means of the latching grooves 60 in the latching grooves 56 of the latches 54. FIG. 4 shows the wall holder 46 and the connector 42 separately, while FIG. 5 shows the assembled state in which the connector 42 with its fixing elements 48 is locked into the wall holder 46. On which the wall holder 46 is mounted. The second contact surface 38 of the channel elements 32 can thus also be brought into exact contact with the wall or ceiling. An adjustment in the axial direction is possible by displacing the connectors 42 by means of the latching grooves 60 in the latching grooves 56 of the latches 54. FIG. 4 shows the wall holder 46 and the connector 42 separately, while FIG. 5 shows the assembled state in which the connector 42 with its fixing elements 48 is locked into the wall holder 46. On which the wall holder 46 is mounted. The second contact surface 38 of the channel elements 32 can thus also be brought into exact contact with the wall or ceiling. An adjustment in the axial direction is possible by displacing the connectors 42 by means of the latching grooves 60 in the latching grooves 56 of the latches 54. FIG. 4 shows the wall holder 46 and the connector 42 separately, while FIG. 5 shows the assembled state in which the connector 42 with its fixing elements 48 is locked into the wall holder 46.

The canal elements 32 which can be attached to one another can each be pushed axially onto the connector 42 so far that their end faces face each other densely and without gaps. In order that this gap-free joining is not hindered by the wall holder 46 and the fixing elements 48, the channel elements 32 have a clearance 62 on their end-facing surface. This axial end face of the channel element 32 is recessed by this clearance 62 in the region of the abutment surfaces 38 opposite the axial end face in the region of the outer surface of the outer shell 40. In this way, the channel elements 32 to be joined together directly against each other in the region of their outer surface 40 can, While the wall holder 46 and the fixing elements 48 are received in the clearance 62. As a result, the adjoining channel elements 32 with the outer surface areas 40 visible from the space completely cover the connectors 42 and their attachment to the wall or the ceiling and render them invisible from the room side. Since the connectors 42 with their fixing elements 48 are only snapped into the previously fixed wall holders 46, the fastening does not have to be accessible from the outside during assembly of the channel elements 32 placed on the connectors 42. Completely cover the ceiling and make it invisible from the room side. Since the connectors 42 with their fixing elements 48 are only snapped into the previously fixed wall holders 46, the fastening does not have to be accessible from the outside during assembly of the channel elements 32 placed on the connectors 42. Completely cover the ceiling and make it invisible from the room side. Since the connectors 42 with their fixing elements 48 are only snapped into the previously fixed wall holders 46, the fastening does not have to be accessible from the outside during assembly of the channel elements 32 placed on the connectors 42.

If a load-bearing fastening of the channel elements to the ceiling or wall is not necessary, for example in the case of short channel elements, then a short connector 80 can be used as shown in FIG. The short connector 80 corresponds in the tube shape to the connector 42, but has no fixing elements and accordingly a lesser axial length. On the short-circuit connector 80, channel elements 32 can be pushed on either side. An outer stop collar 82 formed axially centrally on the short connector 80 serves for the axial positioning of the short connector 80 in the channel elements 32.

As a result of the axially aligned joining of the straight channel elements 32 through the connector 42, as shown in FIGS. 4 and 5, straight air guide ducts of any length can be formed from channel elements 32 of a predefined uniform length. For adaptation to specific longitudinal dimensions, the channel elements 32 can be cut to length. If the air guidance system is to be guided around a space corner, different developments of the invention are possible, as are illustrated, for example, in FIGS. 7 to 9.

In an embodiment, which is illustrated in FIGS. 7 and 8, a corner connector 64 is used to connect the channel elements 32 adjoining one another in a space corner. The corner connector 64 results in its shape by fitting two connectors 42 of the form shown in FIGS. 4 and 5 together with an axial end below 90 °. The ends of the corner connector 64 extending at 90 ° correspond with their seal 44 and the fastening of the above-described embodiment of FIGS. 4 and 5, which consists of wall holder 46 and fixing elements 48, to which reference is made.

Straight channel elements 32 are plugged onto the ends of the corner connector 64 which extend at 90 ° to one another, the ends of the channel elements 32 pushed onto the corner connector 64 being cut to a miter joint at 45 ° so that they are butted against each other without joints And completely cover the corner connector 64 with its attachments visually from the room side.

An alternative embodiment is shown in FIG. 9. In this embodiment, a separate corner channel element 66 is provided, which is produced in accordance with the channel element 32 as a rigid molded part from a foamed plastic. The cube-shaped corner channel element 66 has an upper flat contact surface 38, which rests against the ceiling, and two contact surfaces 38, which are angled at 90 ° against one another and against the upper contact surface, and bear against the walls. The end faces of the corner channel element 66 are thereby at a right angle to each other. The inner channel 34 extends in the corner channel element 66 at a right angle. Straight channel elements 32 of FIGS. 2 and 3 can each be connected to the end faces of the corner channel element 66 at right angles to each other by means of a connector 42 of FIG. 4 and 5 are connected. The corner channel element 66 is thereby supported by the attachments of the two connectors 42. The attachments are thereby received by the clearance 62 of the adjoining channel elements 32. It is also possible to connect channel elements 32 to the corner channel element 66 by means of short-circuit connectors according to FIG.

The corner channel element 66 can be inserted into an interior corner of the room. Likewise, the corner channel element 66 can be used to guide the air guide channel around an outside corner of the room.

If, in the air guidance system, a branch from the air-conducting duct is required in order, for example, to lead the air from a space through the building wall into an adjoining space or to form an air outlet 18, the openings shown in FIGS 6 and 12 of the invention.

FIGS. 10 and 11 show a T-connector 68, which serves to establish a branching of the air-conducting duct. The T-connector 68 corresponds in its basic configuration to the connector 42 of FIGS. 4 and 5, so that reference is made to the description there. Unlike the connector 42, the T-connector 68 has a right-angled branch 70 in the axial center of the tubular connector, which has the same tube cross-section and is also provided with a seal 44. Channel elements 32 can be placed on the two axial ends of the T-connector 68 in the manner described above. The axially abutting ends of these channel elements 32 in this case have a clearance for the branch 70 in addition to the clearance 62 for the fastening. An air outlet 18 can be placed on the branch 70. Likewise, the air-conducting channel can be guided via the branch 70 into an adjacent space.

[0038] An alternative for a branch is shown in FIG. In this embodiment, a T-channel member 74 is used. The T-channel element 74 is a dimensionally stable molded part of foamed plastic, which substantially corresponds to the straight channel element 32. In contrast to this, the T-channel element 74 has, in its axially middle region, a branch channel 76, which opens into the inner channel 34 at right angles, has the same internal cross-section and emerges vertically from one of the contact surfaces 38. The T-channel element can be connected in the manner described above by means of

Connectors 42 or short connectors 80 to straight channel elements 32. An air outlet 18 can, for example, be used in the branch channel 76.

[0039] If the branch of the channel is to be passed through a room wall, a wall sleeve 72 can be connected to the branch channel 76, as shown in FIG. The wall sleeve 72 has the same inner diameter as the branch channel 76 and is connected thereto by means of a short connector 80. The axial length of the wall sleeve 72 corresponds to the thickness of the room wall. An air outlet 18 or the like can in turn be placed on the opposite end of the wall sleeve 72, which emerges from the wall in the adjacent space. Likewise, by means of a short connector 80, a channel element 32 or a T-channel element 74 can be connected in order to carry the air-conducting channel in the adjacent space.

[0040] In order to terminate the air guidance system on the end side, an end cover 78 shown in FIG. 14 can be used. This end cap 78 is a plastic molding. The end cap 78 is inserted into the free end of the channel element 32 for closing the inner channel 34. For the optical closure of the free end of the last channel element 32, this can butt against a space wall. If the channel element 32 does not terminate at the end of the space, a corner channel element 66 according to FIG. 9 can be attached to the free end of the last channel element 32, the open end of the inner channel 34 being directed towards the wall or ceiling of the space Is invisible.

In order to adapt the air flow in the various branches of the air guidance system to a different supply air requirement in different rooms, volume perforated screens 84 can be inserted into the inner channels 34 of the channel elements 32, 66, 74 or into the wall sleeve 72, 15 are shown. The volume hole diaphragm 84 is a short tubular plastic part which is fitted with seals 44 into the inner channel 34. The inner cross-section of the volume hole orifice 84 is partially closed by concentric annular washers 86. By breaking these annular washers 86, the free throughflow cross-section of the volume hole diaphragm 84 can be adapted to the respective supply air requirement.

FIG. 16 shows an exemplary embodiment of the double distributor 24. The double distributor 24 consists of a cuboid housing 88, which is preferably lined with sound insulation. The connection 92 for supply air coming from the central unit 10, as well as the connection 94 for the exhaust air extracted by the central unit 10, open into an end wall 90. The supply air is led through the internal volume of the housing 88 to a supply air outlet 96 in the opposite end wall. The supply air line 16 is connected to this supply air outlet 96 by, for example, a channel element 32 is connected by means of a short-circuit connector 80. Exhaust air openings 98, which are connected to the connection 94 in the interior of the housing 88, open into the two side walls of the housing 88.

Reference numeral 10 Central unit 12 Outside air line 14 Outgoing air line 16 Supply air line 18 Air outlets 22 Air openings 24 Double distributor 26 Hallway 28 Rooms occupied 30 Rooms under load 32 Channel elements 34 Inner channel 36 Groove 38 contact surfaces

Claims

40 outer jacket surface 42 connector 44 seal 46 wall holder 48 fixing element 50 base plate 52 breakthroughs 54 catches 56 catches 58 spacer 60 catch grooves 62 free cut 64 corner connector 66 corner channel element 68 T connector 70 branch 72 wall sleeve 74 T channel element 76 branch channel 78 end cap 80 short connector 82 stop collar 84 volume hole diaphragm 86 circular ring washers 88 housing 90 end wall 92 connection for supply air 94 connection for waste air 96 supply air outlet 98 exhaust air openings 100 cover Claims 1. 1. Air guiding system for ventilation of rooms of a building, with channel elements (32) for air guidance, with connectors (42) for connecting the channel elements to one another (32), mounting means (46, 48) for mounting the air guiding system in the space,(32) having an axially continuous inner channel (34), the connectors (42) being rigidly tubular and being insertable into the inner channel (34) thereof at the ends of the channel members (32), the connectors 42) can be mounted on a wall or ceiling of the space by means of the fasteners (46, 48), and wherein, in the installed state of the system, two channel elements (32) are placed on a connector (42) through this connector (42) In that the channel elements (32) are elongated, straight-shaped molded parts of foamed plastic, in that the outer jacket surface of the channel elements (32) has two planar bearing surfaces (38) which abut one another at right angles in an axially extending edge,Characterized in that the two channel elements (32) placed on a connector (42) each abut axially with their ends and cover the connector (42) and its attachment (46, 48) from the outside by means of the channel elements (32) (62) which is open towards the contact surfaces (38) and receives the fastening (46, 48) of the connector (42) in the case of axially projecting channel elements (32).48) of the connector (42).48) of the connector (42).
2. Air guiding system according to claim 1, characterized in that the inner channel (34) and the connectors (42) have a circular cross-section.
3. Air guiding system according to claim 1, characterized in that the channel (34) has a cross section which is continuous throughout the entire axial length of the channel element (32).
4. The air guidance system as claimed in claim 1, wherein the inner wall of the channel is smooth and closed-celled.
5. Air guiding system according to claim 4, characterized in that the inner wall of the channel (34) is provided with a coating, in particular with an anti-electrostatic or antimicrobial coating.
6. Air guiding system according to claim 1, characterized in that the channel elements (32) consist of foamed polystyrene.
7. Air guiding system according to claim 3, characterized in that the inner channel (34) is produced by a folding core.
8. The air guiding system as claimed in claim 3, characterized in that the channel elements (32) are produced in a two-layered manner and are joined together along a joint (36) which divides the inner channel (34).
9. The air guiding system as claimed in claim 1, characterized in that the channel elements (32) have outside the contact surfaces (38) an outer jacket surface (40) with a smooth or structured surface which is designed in the form of a stucco profile or with flat surfaces Or can be cleaned, painted or wallpapered.
10. Air guiding system according to claim 1, characterized in that the connectors (42) are rigid rigid plastic injection molded parts.
11. Air guiding system according to claim 10, characterized in that the inner wall of the connectors (42) is smooth and burr-free.
12. Air guiding system according to claim 1, characterized in that the connectors (42) have a seal (44) on their outer casing for anchoring and sealing in the inner channel (34) of the channel elements (32).
13. The air guiding system as claimed in claim 1, characterized in that the fastenings each have a wall mount (46) which can be mounted on the wall or ceiling of the room and fixing elements (48) arranged on the connector (42) ) And the fixing elements (48) for mounting the air guiding system on the wall or ceiling can be assembled.
14. Air guiding system according to claim 13, characterized in that the fixing elements (48) can be snapped onto the wall holders (46).
15. Air guiding system according to claim 13, characterized in that the connectors (42) are adjustable in three axes with respect to the wall or ceiling of the space by means of the wall holders (46) and the fixing elements (48).
16. Air guiding system according to claim 15, characterized in that the wall holders (46) can be fixed adjustably to the ceiling or wall in the plane of the ceiling or wall.
17. Air guiding system according to claim 15, characterized in that the fixing elements (48) can be engaged in an adjustable distance from the wall or ceiling in the wall holder (46).
18. The air guidance system as claimed in claim 15, characterized in that the fixing elements (48) are latch-locked in the wall holders by means of latching grooves (56, 60) which provide a displacement of the fixing elements (48) axially parallel to the connector opposite the wall holder (46) (42).
19. The air guiding system as claimed in claim 1, characterized in that the short connector (80) is provided in the form of short tube pieces, which allow the channel elements (32) to be fitted together without attachment.
20. The air guiding system as claimed in claim 1, characterized in that additionally corner connectors (64) are provided on which channel elements (32) can be attached at right angles to one another, the channel elements (32) abutting one another with a mitred cut.
21. The air guiding system as claimed in claim 1, wherein corner channel elements (66) are additionally provided which have end faces arranged at right angles to one another, the inner channel (34) of which extends at right angles and on whose end faces channel elements (32) are connected by means of connectors (42 ) Or short-circuit connectors (80).
22. The air guidance system as claimed in claim 1, wherein additionally T-connectors (68) are provided, which have a right-angled branch (70) between their axial ends.
23. The air guidance system as claimed in claim 1, characterized in that additionally T-channel elements (74) are provided which have a branch channel (46) opening at right angles into the inner channel (34) exit.
24. Air guiding system according to claim 22, characterized in that a wall sleeve (72) can be connected to the branch (70) or the branch channel (76).
25. The air guiding system as claimed in claim 1, wherein the free end of a channel element can be closed by a cube-shaped corner channel element.
26. Air guiding system according to claim 1, characterized in that volume hole plates (84) can be inserted into the inner channel (34) of the channel elements (32).
27. The air guide system as claimed in claim 1, wherein a double distributor (24) directs the supply air from a central unit (10) into a supply air line (16) constructed from channel elements (32), and the exhaust air to the central unit (10) passes.