DE8709348U1 - Window curtain device for air conditioning rooms - Google Patents

Abstract

In the device, which has a flat, elongate, upright housing, an air supply connection of the housing and blow-out slots arranged on the upper side of the housing, the blow-out slots are arranged transversely to the longitudinal extension of the housing and have a mutual separation which is a multiple of their width.

Description

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Dr. rar. nat. OTTO BUCHNER Ftöttntannettieei 30a Telephone (089) 832446 Telex 5213177 web Patent Attorneys D-&bgr;&Ogr;&Ogr;&Ogr; MÖNCHEN 60 Telecop. (069) 8340966 European Petitioner Attorney· Telegr. Weslbuefi

O.Z.t 155.277

SCHAKO metal goods factory

Ferdinand Schad KG
Kolbingen branch
7201 Kolbingen

Window curtain device for air conditioning of rooms

The invention relates to a window curtain device for air conditioning rooms according to the preamble of claim 1.

Window curtain devices of this type are installed below the windows on the window sill and blow the supply air upwards along the window surface in the manner of a curtain. The supply air curtain shields the window surface, which generally forms a cold bridge. The supply air blown upwards into the room along the window surface flows along the ceiling and sinks into the room as soon as the jet speed

Postgiro office: Karlsruhe 76979-754.«anMti^K-De/ilGft» ftwk Aq Wllingen (bank code 69470039) 146332

rays take air from the occupied zone through induction, resulting in a roller-like air flow in the room, which leads to good and rapid ventilation of the room.

Window curtain devices are known for two-channel systems, which are supplied with cold and warm supply air, whereby the mixing ratio of cold air and warm air can be adjusted to the respective requirements. Window curtain devices are also known for single-channel systems, in which room air is sucked into the housing by induction and blown out together with the supply air. The mixing ratio of sucked in room air and supply air can be changed to adapt to the air conditioning requirements. All of these window curtain devices have the advantage that the same total amount of air is blown into the room under all operating conditions and the temperature of the blown-in air is adjusted to the respective conditions. The volume of air blown out and the jet speed can be designed for optimal flushing of the room. However, window curtain devices of this type are relatively complex in terms of construction and take up a relatively large amount of space.

Window curtain devices are also known for bin duct systems that only blow out fresh air and where adaptation to the respective room conditions is achieved by changing the blown-in fresh air volume flow. These window curtain devices are particularly simple in terms of construction. However, changing the blown-in fresh air volume flow leads to a change in the jet speed and thus the room flushing.

The invention is based on the object of designing a window curtain device in which only supply air is blown out, so that even when the volume of supplied supply air changes, there is good mixing with the room air and a stable flushing of the room.

This object is achieved according to the invention in a window veiling device of the type mentioned at the outset by the features of the characterizing part of claim 1.

Advantageous embodiments of the invention are specified in the subclaims.

According to the invention, the exhaust slots of the window curtain device are arranged transversely to the longitudinal extension of the housing. This means that, with a sufficient overall cross-section of the exhaust slots, a distance between the individual exhaust slots can be maintained that is large enough for the room air to penetrate between the supply air jets emerging from the exhaust slots and be carried along by the supply air jets through induction. Induction zones are thus formed between the air jets of the individual exhaust slots, which cause a high induction and a rapid mixing of supply air and room air.

The supply air is blown through the outlet slots with high

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speed, so that even with changes in the supply air volume flow and especially with small supply air quantities, a stable air roller is formed, which leads to a good flushing of the room. As a result of the high induction, even with small supply air quantities, a sufficiently large amount of room air is taken along by the supply air jets to create this stable air roller.

In order to distribute the supply air, which is supplied at a relatively high pressure, evenly over the exhaust slots and to ensure that the supply air flows out quietly, rectifiers are provided in the housing of the window curtain device between the supply air connection and the exhaust slots. Preferably, two perforated plates arranged one behind the other in the direction of flow serve as rectifiers, at least one of which is arranged parallel to the plane of the top side provided with the exhaust slots.

The window curtain device is extremely simple in design, so that it is very cost-effective to manufacture. The device can be manufactured with small dimensions, especially with a small depth. It is therefore particularly suitable for cases where only limited space is available for installation. Due to its small dimensions, the window curtain device is also particularly suitable for subsequent installation. The advantage here is that only a single supply air line with a small cross-section is required.

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In the following, an embodiment of the invention is explained in more detail with reference to the accompanying drawing. They show

Pigeon 1

a vertical cross-section through the window curtain device.

Figure 2

a partial side view of the window veil device and

Figure 3

a partial light on the window veil device.

The window veiling device, which is installed in a window parapet 10, has a flat, elongated, upright, box-shaped housing 12. The housing 12 is composed of a lower box-shaped housing part 14 with a rectangular cross-section, onto which an upper housing part 16 with an approximately square cross-section is placed. The lower housing part 14 and the upper housing part 16 have a U-shaped profile, with the upper housing part 16 being pushed onto the side surfaces of the lower housing part 14 with its side surfaces. Side plates 18 connect the two housing parts.

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Blow-out slots 20 are provided in the elongated horizontal top of the upper housing part 16. The blow-out slots 20 run perpendicular to the longitudinal extension of the housing and are distributed over the entire longitudinal extension at equal mutual distances. The distance between the blow-out slots 20 is a multiple of their width. The width of the blow-out slots 20 is between about 3 mm and 10 mm. The mutual distance between the slots is about 4 to 20 times their width. In the exemplary embodiment shown, the blow-out slots have a width of 5 mm and a mutual distance of 75 mm.

The housing 12 is provided with an air supply connection 22 at the bottom, which is inserted as a nozzle in the bottom surface or in the side surface.

Two rectifiers consisting of perforated plates 24 and 26 are inserted into the housing 12 in the flow path of the supply air from the supply air connection 22 to the exhaust slots 20. The perforated plates 24 and 26 are inserted between the side walls of the housing 12 and are attached to them with bent flanges. The lower perforated plate 24 is designed in the shape of a circular arc and arches over the supply air connection 22. The supply air entering through the supply air connection 22 is distributed evenly in all directions by this lower perforated plate 24.

The upper perforated plate 26 is arranged in the area of the connection between the lower housing part 14 and the upper housing part 16 and extends parallel to the

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The upper perforated plate 26 provides an even distribution of the supply air flowing from the lower housing part 14 to all the blow-out slots 20.

Claims (6)

Dipr.-lng.KLAUS \I/e3sTFH/&. · .·* . *'·. ,· WaWstrasse33 Telephone (07721)56007 ;::*:::::: Telex 177721217 wemud Or.rer.naLBERNO MUS96NUQ' * ·· · D-7730VS-VILLINGEN Teletax 7721217 wemu d Telecop. (07721) 55164 Dr. rer. natOTTO BÜCHNER Rossmannstrasse 30a Telephone (089) 832446 Telex 5213177 web Patent attorneys 0-8000 MÖNCHEN 60 Telecop. (089) 8340966 European PBtant Attorney· _Te|egr Westbuch O.Z.: 155,277 SCHOTIAH PROVERBS 1. Window sliding device for air conditioning rooms, with a flat, elongated, upright housing, with an air supply connection of the housing and with exhaust slots arranged on the top of the housing, characterized in that the exhaust slots (20) are arranged transversely to the longitudinal extension of the housing (12) and have a mutual distance which is a multiple of their width. 2. Window veiling device according to claim 1, characterized in that the distance between the blow-out slots (20) is 4 to 20 times their width. 3. Window veiling device according to claim 2, characterized Postgiro office: Karisruhe 76979·7&bgr;)··$&bgr;&igr;\&Mgr;<&Oacgr;{&idiagr;&Igr;&ogr;{ dikes ]BJmk/iQ.\}llllngen (BU 69470039) 146332 indicates that the distance between the exhaust slots (20) is up to 10 to 20 times their width. 4. Window veiling device according to claim 2 or 3, characterized in that the width of the blow-out slots (20) is 3 mm to 10 mm, preferably about 5 mm. 5. Window curtain device according to claim 1, characterized in that at least one rectifier device is provided in the housing (12) between the supply air connection (22) and the blow-out slots (20). 6. Window curtain device according to claim 5, characterized in that two perforated plates (24, 26) are provided as rectifying device, of which at least the one closer to the blow-out slots (20) is arranged substantially parallel to the upper side of the housing (12).