DE1507796C

DE1507796C - Holding device for air filter plates

Info

Publication number: DE1507796C
Authority: DE
Inventors: Charles William Albuquerque N Mex Soltis (V St A)
Original assignee: Becton Dickinson and Co
Current assignee: Becton Dickinson and Co
Publication date: 1972-08-17

Description

Eine Leitung 19 führt die Luft in einen Deckenluftraum 20, der durch die tragende Zimmerdecke 12 und die von Haltevorrichtung und Luftfilterplatten 21 gebildete Decke begrenzt ist.A line 19 leads the air into a ceiling air space 20 through the supporting ceiling 12 and that formed by the holding device and air filter plates 21 Ceiling is limited.

In F i g. 3 sind die Haltevorrichtung und die Luftfilterplatte 21 dargestellt, die aus einem Metallrahmen 23 und einem Filtermedium 24 besteht. Die Haltevorrichtung ist aus einem Traggerippe 22 von Hohlprofilträgern 28 mit rechteckigem Querschnitt gebildet, die jeweils einen Kopfflansch 26 aufweisen.In Fig. 3 the holding device and the air filter plate 21 are shown, which consist of a metal frame 23 and a filter medium 24 consists. The holding device is made up of a support frame 22 of hollow profile girders 28 formed with a rectangular cross section, each having a head flange 26.

Innerhalb jedes Hohlprofilträgers 28 ist ein Schraubenbolzen 30 vorgesehen, der oben durch eine versplintete Mutter 31 befestigt ist. Eine Kappe 32 dichtet gegen den Kopfflansch 26 ab und verhindert jeden Luftaustritt; sie ist jedoch zum Auseinanderbau abnehmbar. An einer durch den Schraubenbolzen 30 bewegbaren Mutter 33 sind drehbar angeordnete Druckstücke 34, 35 befestigt, wobei die Druckstücke 34,35 durch eine Spreizfeder (36 (F i g. 4) vorgespannt werden, so daß die Druckstücke 34, 35 je nach Drehung des Schraubenbolzens über in den Hohlprofilträgern 28 vorgesehene Öffnungen 27 in den jeweiligen Hohlprofilträger hineingeklappt bzw. aus diesem herausgeklappt werden. Wie in F i g. 3 gezeigt ist, wird die versplintete Mutter 31 durch entsprechendes Drehen des Schraubenbolzens 30 so eingestellt, daß sie den Kopfflansch 26 gegen die Luftfilterplatte 21 anliegend hält und durch die Flanschdichtung 37 abdichtet.Within each hollow profile support 28, a screw bolt 30 is provided, the top by a cotter pin nut 31 is attached. A cap 32 seals against the head flange 26 and prevents any air leak; however, it is removable for disassembly. On one through the screw bolt 30 movable nut 33 rotatably arranged pressure pieces 34, 35 are attached, the pressure pieces 34, 35 pretensioned by a spreading spring (36 (FIG. 4) so that the pressure pieces 34, 35 depending on the rotation of the screw bolt over into the Hollow profile girders 28 provided openings 27 folded into the respective hollow profile girder or be folded out of this. As in Fig. 3 is shown, the split nut 31 is replaced by a corresponding Turn the screw bolt 30 so that it puts the head flange 26 against the air filter plate 21 adjoins and seals off by the flange seal 37.

Eine Luftfilterplatte 21 wird dadurch entfernt, daß der Schraubenbolzen 30 in entsprechender Richtung gedreht wird und die Druckstücke 34, 35 abgesenkt werden. Die Luftfilterplatten 21 werden mit den Druckstücken 34, 35 abgesenkt und fallen ab, wenn die Druckstücke 34, 35 ausreichend in den betreffenden Hohlprofilträger 28 hineingeklappt sind. Um hierbei eine Beschädigung der Luftfilterplatten 21 und eine dadurch möglicherweise verursachte Verletzung eines Arbeiters zu vermeiden, ist ein Halter 40 am Boden des Traggerippes 22 vorgesehen. Dieser Halter 40 ist ein Blechstreifen, der nicht breiter als der Hohlprofilträger 28 in der einen Abmessung ist,An air filter plate 21 is removed by the screw bolt 30 in the corresponding direction is rotated and the pressure pieces 34, 35 are lowered. The air filter plates 21 are with the Pressure pieces 34, 35 lowered and fall off when the pressure pieces 34, 35 are sufficiently in the relevant Hollow profile support 28 are folded in. In order to avoid damage to the air filter plates 21 and to avoid injury to a worker that this may cause is a keeper 40 is provided on the bottom of the support frame 22. This holder 40 is a sheet metal strip that is not wider than the hollow profile support 28 is in one dimension,

ίο so daß ein Drehen unter rechtem Winkel zu der gezeigten Lage eine Freigabe der Luftfilterplatte 21 erlaubt. ίο so that a turning at right angles to the one shown Location allows the air filter plate 21 to be released.

Innerhalb des Hohlprofilträgers 28 ist eine Führung 41 angebracht, die bis zur Öffnung 27 reicht und deren Breite für eine freie Betätigung der Druckstücke 34, 35 ausreicht. Der Zweck der Führung 41 besteht darin, die Druckstücke 34, 35 an einer Drehung gegenüber dem Hohlprofilträger 28 zu hindern, wenn sie sich darin in ihrer zusammengeklappten Lage befinden.A guide 41, which extends as far as the opening 27, is attached inside the hollow profile support 28 and the width of which is sufficient for a free actuation of the pressure pieces 34, 35. The Purpose of Leadership 41 consists in preventing the pressure pieces 34, 35 from rotating with respect to the hollow profile support 28, when they are inside in their collapsed position.

Beim Einbau einer neuen Luftfilterplatte 21 werden die entsprechenden Druckstücke 34, 35 an den zugehörigen Schraubenbolzen 30 so eingestellt, daß sie sich zusammengeklappt in den Hohlprofilträgern 28 befinden, so daß die Luftfilterplatte 21 eingeführt werden kann. Die Druckstücke 34, 35 werden sodann mittels der Schraubenbolzen 30 aus den Hohlprofilträgern 28 herausgeklappt und so angezogen, daß die erforderliche Abdichtung an den Kopfflanschen 26 erreicht wird. All dies geschieht von der bequemeren Seite der Luftfilterplatten 21 aus, gewöhnlich von der Raumseite, wobei für die Auswechslung nur eine minimale Zeit erforderlich ist.When installing a new air filter plate 21, the corresponding pressure pieces 34, 35 are attached to the associated screw bolts 30 adjusted so that they collapsed in the hollow profile girders 28 are located so that the air filter plate 21 can be inserted. The pressure pieces 34, 35 are then folded out by means of the screw bolts 30 from the hollow profile supports 28 and tightened so that the required sealing on the head flanges 26 is achieved. All of this is done from the more convenient Side of the air filter plates 21 from, usually from the room side, with only one for replacement minimal time is required.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims

1 2 construction distinguishes itself, a quick assembly and a patent claim: allows easy change of the filter plates and ensures a tight seal, so that no

1. Holding device for air filter plates on the room ventilation set up for unfiltered air by bypassing the filter plates, 5 can enter the room concerned,
consisting of a support structure, in whose structure a support rib fields of air filter plates are already held in locking elements by means of releasable tensioning and bracing ribs arranged on the support device of the type mentioned above, which consists of a support structure on one of its framework fields air filter plates by means of pressure pieces arranged on the screw bolt on detachable tensioning and referencing elements arranged on the support frame, with a tensioning and locking element being held, the pressure pieces arranged on a lungseiement by corresponding rotation of the screw bolt at the same time on the Frame of sen, whereby a tensioning and locking device engages two adjacent air filter plates and, by corresponding rotation of the screw, these frames against a frame bolt at the same time on the frame of two adjacent circumferential, horizontal flange of the h types of air filter plates attacks and this frame frame bounding the frame frame bounding girders presses against a respective frame surrounding, circuit of a sealant, because the horizontal flange that delimits the frame area characterized by the fact that the supporting girder with the interposition of a sealing frame (22) of hollow profile girders ( 28) formed 20 by means of presses.

is that the screw bolts (30) in the hollow According to the invention is the above-mentioned profile girders (28) are rotatably mounted and that would be solved by the fact that the support frame of Hohldie is formed on the screw bolts (30) rotatably on profile carriers that the screw bolts ordered pressure pieces (34, 35) are rotatably mounted depending on the rotation in the hollow profile supports and of the screw bolt over into the hollow profile 25 that the rotatably arranged on the screw bolt (28) provided openings (27) in the th pressure pieces depending on the rotation of the screw. respective hollow profile girders folded in or bolted over provided in the hollow profile girders be folded out of this. Openings in the respective hollow profile girder

2. Holding device according to claim 1, thereby folded or folded out of this,
characterized in that the pressure pieces (34, 35) are fastened at 3 ° a nut which can be moved against screw bolts by the pressure pieces through a guide (41) rotate in the respective hollow profile support (28) and that the pressure pieces are guided against by a guide. - 35 twisting performed in the respective hollow profile support

3. Holding device according to claim 1 or 2 are.

characterized in that the pressure pieces are advantageously below the pressure pieces

(34, 35) under the action of an expanding spring (36) the action of an expanding spring.

stand. One embodiment of the invention is at hand

40 of the drawing explained in more detail. It shows

F i g. 1 the top view of a ceiling, which consists of air filter plates and a holding device,

FIG. 2 shows a section along the line 2-2 in FIG. 1,

The invention relates to a holding device for wherein, in addition, in the form of a block diagram

Air filter plates on a typical air circulation system set up for room ventilation is shown,

cut ceilings. F i g. 3 shows a section through the holding device

In hospitals, research facilities, laboratories along line 3-3 in Fig. 1,

Rien and the like. Often individual rooms have to be free of fig. 4 shows a cross section through the holding device contaminants. To this end . along line 4-4 in FIG. 3 and
the incoming air is filtered, whereby a further section through the holding device is ensured that a flow device which is as laminar as possible along the line 5-5 in FIG. 3..
is present to avoid air turbulence. 1 and 2 show an arrangement of air filters, so-called absolute filters, filter plates 21 and a holding device for holding back 99.97% of all suspended particles, the ceiling of a room and an arrangement which is larger than 0.3 microns are. Due to the need for air circulation, in which the air is created due to the requirements mentioned, some floors are sucked off. If necessary, difficulties, because a laminar flow large NEN the air filter plates 21 also on the wall 10 of the filter surfaces and very fine filters are usually attached space, which then quickly clog the air, so that the air filter plates from through the air filter plates 21 opposite Must be replaced from time to time. Furthermore 60 wall is deducted. The return arrangement for removing the air from the air filter plates on the holding device can be made of a grille or an absolutely airtight one, in order to prevent air entry perforated from one piece with the floor 13 from the outside, which consists of a considerable existing segment; But it can also reduce the filter performance of the ceiling as a result of being arranged in the vicinity of the floor 13 and with it. 65 be connected to a return line 14. The invention is therefore based on the object of blowing the air upwards through a holding device for air filter plates to create filter 16 and through an air space 17 with a window that is simple and easy to open Pressure regulating slide 18 is equipped.