EP0864820B1 - Method for adjusting an air circulation system - Google Patents

Abstract

The flow rate of the air that emerges from a ducting system is adjusted by adjusting a first outlet (6.1) to a predetermined air flow. After this, the adjustment is transferred to the following outlets (6.2-6.6). The flow rate may be adjusted by changing the width of at least one aperture and the pressure difference is determined upstream and downstream of the first outlet to measure the flow rate to make the width adjustment. The air ducting system may consist of a number of outlet apertures, the width of which is adjusted to that of the first aperture in the air flow.

Description

The present invention relates to a method for adjustment of an air duct system and that of Exhaust devices of an air duct system flow out Air volume, as well as a corresponding air duct system.

Air routing systems come in a variety of shapes and designs known and on the market. There is a very big one Number of ventilation grilles and outlets with the most varied Volume settings. The quantity setting is mostly based on the individual ventilation grille, i.e., it is determined with appropriate measuring elements the amount of air flowing out. Should this be changed the change will also be made to each individual ventilation grille performed. This has very significant disadvantages because every grid is measured after installation got to.

This in turn involves a significant number of measuring points often only a few centimeters away. If there is still a majority to an air duct system of air outlets, they must be on top of each other be coordinated. So far this has been extraordinary time-consuming and difficult matter. The change the quantity setting for a grid causes at the same time a change in the amount of air discharged from the other bars. Therefore, the air volume setting at one grid changed, all other grids must individually readjusted.

Furthermore, from DE-AS M 14 19 V / 36d, designed on 04/03/1952, a ventilation system known, where necessary. prepared air is introduced into a room through ducts becomes. The air outlet is a flow rate adjuster upstream to regulate the air outlet.

From DE-GM 18 65 251 is an air steering blind for loading or / Ventilation of rooms shown in which A swiveling cover can be moved to the rear of the air steering blind is assigned to a certain amount of air discharge regulate.

From the Swiss newspaper "Die Installation", vintage 1956, volume 28, pages 150 to 154 is a ventilation duct shown in which a plurality of outlet devices are arranged. Every air outlet device is provided with a nozzle which opens into the channel. This is with a lockable flap Provide airflow regulation.

US 4,553,696 describes a system for applying Air, a plurality of Exhaust devices are used. Any outlet device is with a sensor element for determining the Volume flow, which is discharged from the outlet, Mistake. About pressure differences in different Areas of the outlet chamber can be individually outlets regulate. The disadvantage here is that such systems extremely complex to regulate, maintain and moreover are expensive to manufacture.

The present invention is based on the object Procedure of the above Kind of develop with which from a Plurality of air flowing out of exhaust devices is evened out in a simple manner.

To solve this problem, one in the airflow first outlet device is set so that a predetermined amount of air from the exhaust device flows out, after which the setting on the subsequent outlet devices is transferred.

This means that in a first procedural step at an outlet means the amount of air flowing out onto one desired value is set, on the one hand the Width of the opening of this outlet device and the other the amount of air supplied by regulating the fan be coordinated.

It is sufficient if the width of the opening of an outlet device determined for quantity setting and this width is transferred to the other outlet devices.

To determine the amount of air flowing out, before and after the outlet device provided measuring elements that determine the differential pressure in the air flow. After that is done also change the width of the opening until the desired one Value of outflowing air volume is reached.

Above all, it has been found that such a desired Uniformity is achieved if as Reference for all exhaust devices the first in the airflow Device used and with this a certain amount of air is skimmed off by means of a scoop tongue. This Bucket causes that no longer, as before, on one Exhaust device More air flows out than at one others, but above all leads to the desired one Evening out. Through the scoop tongue only a desired, skimmed predetermined amount from the air flow if necessary and fed to the first outlet device. The remaining air flow can go to the other outlet devices to get redirected.

A suitable skimming of a certain amount of air can take place, the scoop should be inclined against the Airflow must be turned on. If necessary. can the angle of the Inclination can still be changed. This will make the Affects the amount of air to be extracted.

Experiments have shown that the arrangement itself a scoop tongue on the first outlet device enough. However, a similar element is also on one of the other outlet devices conceivable.

Usually it's not just about hiring one Opening, but of a plurality of openings, wherein The present invention relates primarily to the outlet devices with slit shutters, as it comes from the EP 0 386 717 are known. Through this slider the amount of air can be regulated easily and very precisely. On the one hand, it is possible to close the slider by hand adjust by engaging the exhaust device from the front and the slider on the fins is moved. However, any other is also conceivable possible adjustment on mechanical, electromotive, pneumatic or hydraulic way. For example. it is conceivable that a tongue protrudes from the slit slide and protrudes from the air duct system and there as a display serves for a scale. A setting of the slider of successive outlet devices then takes place using the same scale values.

Such a method according to the invention is above all applicable to an air duct system in which the exhaust devices are arranged one after the other. It does not matter what kind of outlet device it concerns and whether the air duct system one has a round or angular cross-section. It turned out that when exposed to a wide variety of Pressing 10, 20 or 30 Pa, for example, the air volume changed that emerges from the outlet devices, however, the even amount of discharge does not change. This is an extraordinary advantage of the present one Invention.

Furthermore, it does not matter whether Zuoder in the air duct system Exhaust air is led. It doesn't matter if the air duct system has a constant diameter or, for example, has a gradually decreasing diameter. The success of air evacuation remains.

A suitable one for carrying out the method Air guidance system is described in claim 5. Advantageous embodiments are in claims 6 removable up to 10.

Figur 1 eine Draufsicht auf ein erfindungsgemässes Luftführungssystem;

Figur 2 eine Einsicht in das Luftführungssystem in Richtung Pfeil A in Figur 1;

Figur 3 eine Draufsicht auf einen Luftauslass mit Auslasseinrichtung;

Figur 4 einen Querschnitt durch den Luftauslass gemäss Figur 3 entlang Linie IV - IV;

Figur 5 einen Längsschnitt durch den Luftauslass gemäss Figur 3 entlang Linie V - V;

Figur 6 eine Teildraufsicht auf ein weiteres Ausführungsbeispiel eines Luftauslasses;

Figur 7 eine Draufsicht auf einen Schlüssel zum Verstellen der Auslasseinrichtung.

Embodiments of the invention are shown in the drawing and are described in more detail below. Show it:

Figure 1 is a plan view of an air duct system according to the invention;

Figure 2 shows an insight into the air duct system in the direction of arrow A in Figure 1;

FIG. 3 shows a plan view of an air outlet with an outlet device;

FIG. 4 shows a cross section through the air outlet according to FIG. 3 along line IV-IV;

FIG. 5 shows a longitudinal section through the air outlet according to FIG. 3 along line V-V;

Figure 6 is a partial plan view of another embodiment of an air outlet;

Figure 7 is a plan view of a key for adjusting the outlet device.

According to FIG. 1, an air duct system according to the invention consists of a plurality of air outlets R ₁ - R ₆ , each with outlet devices 6.1 - 6.6. The air outlets R ₁ - R ₆ can have different diameters and can be round or angular in cross section. Intermediate pieces (not shown) can also be arranged between the individual air outlets R ₁ - R ₆ without outlet devices.

According to FIG. 3, an air outlet R according to the invention has a tube 1, which has openings 2, 3 on the end face. In this tube 1, in particular in its outer surface 4, an outlet opening 5 is provided. This is elongated and preferably in the longitudinal direction of the tube 1 from the outer surface 4 punched out.

An outlet device is located behind this outlet opening 5 6 used. Here, the outlet device 6 through the Openings 2 or 3 are pushed into tube 1 or can be used through the outlet opening 5. in the In the present exemplary embodiment, the outlet device is located 6 over an arcuate edge strip 7 one Inner surface 8 of the tube 4. This edge strip 7 is in curved with a radius of the inner surface 8 of the tube 1, as shown in Figure 4.

The outlet device 6 can be of a conventional type, for example. provided as a grille with lamellae 9 to keep an air flow in direct appropriate directions. In the present embodiment the slats 9 are arranged in the longitudinal direction and completely engage behind the outlet opening 5. The slats 9 of the outlet device 6 is a slit slide 10 to limit and / or regulate the resigned Volume flow upstream. Such a slider is known, for example, from EP 0 386 717 A1, to which explicit reference is made.

Rings 11 are provided so that the outlet device 6 is fixed inside the tube 1 and is centered there. The outlet device 6 is pushed into the tube 1 and the rings 11.1, 11.2 are pushed through the openings 2, 3 from both sides. These press on the edge strips 7.1 1 and 7.2. To fix the rings 11.1, 11.2, clamping elements, screws or similar fastening elements (not shown here) can additionally be used to secure the rings 11.1 and 11.2 and thus the outlet device 6 against twisting and slipping in the tube 1.
Furthermore, there is also the possibility of fixing the outlet device 6 to the rings 11.1, 11.2 laterally via fastening elements, for example rivets.

Maintenance and assembly of such an outlet device 6 with Wrestling 11 is greatly facilitated. Can also be conventional Air conditioning systems retrofitted with such pipe sections or subsequently with such outlet devices 6 be provided.

According to FIG. 3, it is indicated that instead of the slats 9 or in addition to the slats 9, the outlet opening 5 can be covered by a perforated plate 12. Furthermore, FIG. 5 shows a further exemplary embodiment of an air outlet R _a , in which a multiplicity of slots 13 are punched into a jacket 4.1. These examples are intended to show that a multitude of possibilities are conceivable for the configuration of the outlet device 6.

It is essential that an amount of air through the Outlet opening 5 should emerge, is adjustable. this happens in the present case by the slit slide 10, whereby this can also have other configurations. It is important that a width a of openings 14 in Slit slide 10 is adjustable. For this purpose present embodiment in a rear wall 15 of the Outlet device 6 molded these openings 14 while on the rear wall 15 of the slider 10 with corresponding Openings. When moving the slider 10 reach the respective openings of the slider 10 and rear wall 15 more or less in Agreement, so that the width a of Openings 14 is changed. It is indifferent to which side of the slider 10 of the rear wall 15 is applied.

The slot slider 10 is by clip strips 16.1 and 16.2 held as indicated in Figure 4 and in the EP 0 386 717 A1 are described in more detail. These brackets 16 let the slider 10 move in the direction of the double arrow x, this shifting is easy can be done by hand when through the slats 9th is reached through.

In another embodiment is with the slider 10 a tongue 17 connected from the tube 1st protrudes and also a shifting of the Slit slide 10 happen in the direction of the double arrow x can. The amount of displacement can be based on a Scale 18 can be read.

Furthermore, the outlet device 6.1 of the first air outlet R _{1 is} also assigned a scoop tongue 19, which protrudes obliquely from the rear wall 15 of the outlet device 6 into the air flow therein. This scoop tongue 19 ensures that only part of the air flow is diverted to the first outlet device 6.1, so that sufficient air volume can still reach the other outlet devices 6.2-6.6.

The operation of the present invention is as follows:

After assembling the air duct system from the air outlets R1 - R6 are all slit slides 10 of each Exhaust devices 6.1 - 6.6 moved so that the openings 14 have their maximum width a, i.e. to Are 100% open. The scoop tongue 19 of the first outlet device 6.1 (= master grid) is in the "open" position, which means they're oblique to the airflow protrudes into this.

There is in front of and behind the master grid 6.1 a measuring element 20 with which a differential pressure measurement is carried out. An example of a corresponding measuring element is described in DE-PS 33 36 911.9, on the is also expressly referred to, so that in in the present case a detailed description is unnecessary.

Now the pressure of the air flow at the fan, the ensures the supply of the air flow, adjusted and on read the first measuring element 20 in front of the master grid 6.1. If you want to change this air pressure, you must the fan can be adjusted.

With the second measuring element after the master grid 6.1 the differential pressure is determined, the Air volume discharged from the master grid 6.1 can be. If this volume of air is too large, the Slit slide 10 shifted somewhat and thus the width a of the openings 14 can be reduced. This leads to a Throttling the air volume. The throttling happens so far until the desired amount of air emerges from the master grille 6.1.

The width a of the openings 14 set in this way is indicated by a Setting gauge 21 (see Figure 7) scanned, the corresponding Gradations 22 has. With this setting gauge 21 are now the openings 14 of the subsequent outlet devices 6.2 - 6.6 (slave grid) set. These thus have the same opening width a, whereby is achieved that each slave grid 6.2 - 6.6 the same amount of air flows as through the master grill 6.1. If, for example, the duct pressure changes, then only the Fan setting can be changed, the setting of the Opening widths a always remain the same, i.e. that Slotted gate valve 10 are only when installing the system adjusted, then no more.

Claims (10)

1. Method of setting an air guidance system and the quantity of air flowing out from outlet means (6.1 - 6.6) of an air guidance system, characterised in that an outlet means (6.1), which is first in the air flow, is set so that a predetermined quantity of air flows out from the outlet means (6.1), this setting thereafter being transmitted to the subsequent outlet means (6.2 - 6.6).
2. Method according to claim 1, characterised in that the quantity of air is set by varying the width (a) of at least one opening (14).
3. Method according to claim 2, characterised in that the differential pressure of an air flow is ascertained upstream and downstream of the first outlet means (6.1), the quantity of air flowing out through the first outlet means (6.1) is determined therefrom, and it is set to a desired value by varying the width (a) of the opening (14).
4. Method according to claim 2 or 3, characterised in that, in the case of the first outlet means (6.1), a quantity of air is skimmed-off from the air flow by means of a skimming tongue (19).
5. Air guidance system having a plurality of outlet means (6.1 - 6.6), each having at least one opening (14) for allowing a specific quantity of air to pass therethrough, characterised in that the widths (a) of the openings (14) of the outlet means (6.2 - 6.6), which is subsequent to a first outlet means (6.1), are set to the width (a) of the opening (14) of the outlet means (6.1) which is first in the air flow.
6. Air guidance system according to claim 5, characterised in that a skimming tongue (19) is associated with the first outlet means (6.1).
7. Air guidance system according to claim 6, characterised in that the skimming tongue (19) is orientated inclinedly away from the outlet means (6.1) in opposition to the air flow.
8. Air guidance system according to at least one of claims 5-7, characterised in that a measuring element (20) is provided upstream and downstream of the first outlet means (6.1) for ascertaining the differential pressure.
9. Air guidance system according to at least one of claims 5-8, characterised in that a scale (18) is provided to determine the width (a).
10. Air guidance system according to at least one of claims 5-9, characterised in that a setting gauge (21) is provided for determining and transmitting the width (a) of the opening (14).

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