DE8601134U1 - Connection piece for a flat duct - Google Patents

Description

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Connection piece for a flat duct

The invention relates to a connector for a flat duct with a rectangular cross-section according to your preamble of claim 1.

Flat duct systems have gained a firm place in kitchen technology in particular, as they are located above the kitchen clock benches laid invisibly and through a wall fracture can be led into the open. There are a large number of individual parts such as ducts of a certain length, Bends, transition pieces, backflow flaps, blinds, connecting hoses, pipe connectors, deflectors and the like.

Such parts are usually on a certain cross-section standardized, these are for extractor hoods with a certain pipe outlet, usually 100 mm in diameter, and air capacities from about 350 to 400 cbm / hour. Such flat channel systems are, however, for more powerful hoods with larger connection and air capacity values, for example pipe outlets with diameters of 120, 150 or two times 100 mm, corresponding to an air output of 600 to 1000 cbm / hour, not suitable. It is possible adapt these pipe systems to the usual air duct system using reducers. However, this increases the airborne noise and the air transport efficiency is reduced due to a backlog at the reducers. In addition, suffer also the engines due to this additional load.

A second possibility is to create a second or more larger duct system, which is expedient Both the height and the width of the channel was increased, for example to 10 χ 15 cm, to be equally favorable To achieve flow conditions, as with the usual flat channel system. However, this has the disadvantage that two Completely different systems with their multitude of individual parts are produced using appropriately manufactured packaging need to be shipped and stored.

In addition, this larger system has the disadvantage that it is partially visible from below due to the greater height is. Especially in high-quality kitchens where extractor hoods are installed with greater power, this visual impairment is extremely undesirable. This problem is especially with the current fashion trend to move to lower cornices of the kitchen wall units, extremely Unfavorable.

The invention is based on the object of a connecting piece according to the preamble of claim 1 so that while avoiding the disadvantages outlined above a flat duct system with unchanged overall height, but twice the performance, is created, with no higher wind noise than before and no backwater occurs, whereby a wall duct is also possible.

The object is achieved according to the invention by the features of the characterizing part of claim 1. Further refinements of the invention are set out in the subclaims.

Preferred embodiments are shown in the drawing, which is explained with reference to the following description of the figures. It shows:

Figure 1 is a perspective view of a connector,

Figure 2 shows the connector shown in Figure 1 with a flexible hose connection,

Figure 3 a circular reducer,

FIG. 4 shows a guide piece for two adjacent flat channels with a rectangular cross-section,

Figure 5 shows the guide piece shown in Figure 4 when installed in a wall,

Figure 6 shows the embodiment shown in Figure 5 with attached common external blind,

Figure 7 shows the guide piece with the blind in a l> (! Gt> .iiübur Figure 6 slightly modified representation,

FIG. 0 shows a wall box formed by two guide pieces and two flat channels.

In the drawing, the same parts are provided with the same BH7.uas7.cAr.hnn . The connection gap 1 shown in Figure 1 shows a first connection piece 2 and perpendicular to this a second

Connection piece 3 together with a correspondingly shaped transition j piece 20. The second connection piece 3 has flat rectangular

Cross-section and is divided into two identical partial connections 4 and 5 by a central web 6. The clear internal dimensions these sections are such that normal flat channels just fit into them.

FIG. 2 shows the exemplary embodiment shown in FIG. 1, with only a flexible one on the first connecting piece 2 Connection hose 7 is attached.

Figure 3 shows a reducer 8 with a circular cross-section, which can be pushed onto the first connection piece 2, for example, if the connection to a duct system with a circular cross-section and smaller diameter is to be made. This can be followed, for example, by a further transition piece, the other free end of which has the cross-section to the Has connection to a flat channel system. Of course, all possible other transition pieces are also conceivable.

FIG. 4 shows a guide piece 9, consisting of a flat transverse plate 13 and two connected or integral with it rectangular partial guides 10 and 11, which are arranged next to one another and through a narrow joint or a transverse web 12 are separated from each other. A flat channel 17 or 18 can be passed through the two partial guides (see Figure 8).

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'·, Figure 5 shows the guide piece shown in Figure 4, wherein

J ₁ it is attached to a wall 15 and at its rear

has a continuous box 14 which protrudes into the wall \.

FIG. 6 essentially shows the arrangement of FIG. 5, but with a common external blind 16 being provided

L is attached to the wall via a further plate 21

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is connected to the fastening plate iä of the guide

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, ί FIG. 7 shows a different arrangement of that shown in FIG

V guide piece with mounting plate 13 and external blind

i, 16.

'. Figure 8 shows a very simple construction of a double

Wall box, which is formed by a guide piece 9 on both sides of the wall (not shown), wherein in these guide pieces two adjacent flat channels 17 and 18 are inserted. In Figure 8 is still on

j outside an external blind 16 is shown, the two channels

covered. Finally, a conventional backflow flap 19 is also inserted in a flat channel.

The connection piece enables the performance to be doubled in a simple manner, despite the retention of the previous advantages of a flat duct system. There is a multitude of transition options. In addition, it is also possible initially to use only a single flat duct and later if necessary, e.g. when connecting a stronger extractor hood at a later date, or if another device is also connected, the second connection can be used without an additional one Pipe installation becomes necessary. The system allows in a surprisingly simple way, with very few additional Split, i.e. two or three parts with external blinds, using the previous flat duct system a doubling of performance and adaptability to different needs as well as the connection of two different devices.

Claims (8)

• t · ·;. ·:.: J ": Patent Office EDUARD BAUMAhh Graduated Physicist German Patent Attorney European Patent Attorney Patent Office Eduard Baumann Postfach 12Ol D-8O11 Hönenkiicnen / Munchen Sattlerstrasse 1 D-8O11 Höhenkirchen / Munich. Germany Telephone 08102/4108 Tetetex 2627-81Ο28Ο baupat Naber + Co. KG Telex 1781O28ODOupat (A break over 15 seconds or. +++ - "Deenaen transmission ·) EnSChedeStr 30 (Aoause more than 15sec or" ++++ 'stop transmission1) Postscneckamt München Kto -Nr 19öo48-8O4 (BLZ 7OO 1OO 8O) D-4460 Nordhortl Raiffasenbank Höhenkifchen Kto-Nr 32OOO \ 9LZ 7Ο1694Ο2) Date, Date "17. Jan. 1986 Us. Sign, your Sign, Rm / oi-, r Ourref. Yourref, öm / aDr · Naber 022 G PROTECTION CLAIMS 1. Ansrhiußstück (1) for a flat channel (17, 18) with rectangular in cross section, characterized by a). a first connecting piece (2) with a round cross-section at a first end, b) a second connection piece (3) with a rectangular cross-section at the second free end, c) wherein the cross-sectional areas of the first (2) and the second connection piece (3) are essentially the same, and * d) where the clear height of the second connection piece (3) is slightly larger than the outer height of a conventional flat channel, and the entire clear width of the / wide connecting piece (3) is slightly larger than twice the outer width of a conventional flat duct, in such a way that two conventional flat channels can be inserted next to one another into the second connection piece (3). 2. Araschlußstück according to claim 1, characterized by a Middle bar (6) to the division of the second connection piece (3) J into two partial connections (4, 5) for one flat duct each (17, 18) with a rectangular cross-section. 3. Connection piece according to one of claims 1 or 2, characterized through a flexible connection hose (7) on the first connection piece (2) for connection to channels with a circular shape Cross-section. 4. Anschiußstück according to any one of claims 1 to 3, characterized by a transition piece (8) for sliding on a connecting piece (2), each of the open ends having a different cross-section for adaptation to different duct cross-sections.
\ 5. Connection piece according to one of claims 1 to 4, characterized characterized in that the first connection piece (2) is arranged at right angles to the second connection piece (3}. 6. Connection piece according to oinem of claims 1 to 5, characterized by a guide piece (9) with passage dimensions slightly larger than the dimensions of two side by side arranged conventional flat channels with a rectangular cross-section, which preferably via a central web (12) in Partial guides (10, 11) is divided, and preferably the two partial guides on a common transverse plate ; (13) for fastening on the inside or outside <> a wall (15) are provided. 7. Connection piece according to claim 5, characterized by a externally mounted common blind (16) for both adjacent flat channels (17, 18). 8. Anschiußstück according to any one of claims 1 to 7, characterized in that on two sides of a wall (15) each «in A guide piece (9) is provided which is connected to one another via two flat channels (17, 18) arranged next to one another are, preferably in each of the flat channels a backflow flap (19) is provided, such that a like common Wall box for two flat boxes lying next to each other ducts are formed.